@techreport{NastanskySiris2024, type = {Working Paper}, author = {Nastansky, Andreas and Siris, Sarah}, title = {Risikoverbund zwischen Banken und Staaten}, series = {Statistische Diskussionsbeitr{\"a}ge}, volume = {56}, journal = {Statistische Diskussionsbeitr{\"a}ge}, doi = {10.25932/publishup-61989}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-619891}, pages = {50}, year = {2024}, abstract = {Die Begrenzung systemischer Risiken ist essentieller Bestandteil der neuen internationalen Finanzmarktordnung. Dabei galt es nicht nur die Verflechtung der Banken untereinander, sondern auch die Verbindung zwischen den Staatsfinanzen und der Solvenz der nationalen Bankensysteme (dem sog. Risikoverbund zwischen Staat und Banken) zu durchbrechen. Der Beitrag beleuchtet die Entwicklung der Forderungen gegen{\"u}ber Staaten in den Bankbilanzen der Eurol{\"a}nder und des Eurosystems im Zeitverlauf sowie den daraus erwachsenden Risiken f{\"u}r die Finanzstabilit{\"a}t. Hierzu werden die Determinanten des Risikoverbunds theoretisch wie empirisch analysiert. Die fiskalische Kapazit{\"a}t der Eurostaaten wird anhand verschiedener Faktoren wie der Verschuldungsquote, dem Leistungsbilanzsaldo und der Kredit-BIP L{\"u}cke aufgezeigt; anschließend werden die Strukturen der Bankensysteme im Euroraum untersucht. Im Einzelnen werden die private und staatliche Gesamtverschuldung, die konsolidierte Bankenbilanzsumme und die darin enthaltenen Verbindlichkeiten sowie der Anteil des Bankensektors an der Bruttowertsch{\"o}pfung in Relation zur Wirtschaftsleistung betrachtet. Außerdem finden NPE-Best{\"a}nde in den Bankbilanzen sowie die Renditen der emittierten Staatsanleihen und damit in Verbindung stehenden CDS-Spreads Betrachtung. Zus{\"a}tzlich werden die Konzentration, der Verschuldungsgrad, Liquidit{\"a}tsziffern sowie l{\"a}nderspezifische Unterschiede in Art und Fristigkeit der Refinanzierung der Bankensektoren abgebildet. Auf Basis der empirischen Befunde werden im Hinblick auf die wechselseitigen Ansteckungseffekte zwischen Banken und Staaten Implikationen f{\"u}r die Finanzmarktregulierung diskutiert.}, language = {de} } @phdthesis{Schifferle2024, author = {Schifferle, Lukas}, title = {Optical properties of (Mg,Fe)O at high pressure}, doi = {10.25932/publishup-62216}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-622166}, school = {Universit{\"a}t Potsdam}, pages = {XIV, 90}, year = {2024}, abstract = {Large parts of the Earth's interior are inaccessible to direct observation, yet global geodynamic processes are governed by the physical material properties under extreme pressure and temperature conditions. It is therefore essential to investigate the deep Earth's physical properties through in-situ laboratory experiments. With this goal in mind, the optical properties of mantle minerals at high pressure offer a unique way to determine a variety of physical properties, in a straight-forward, reproducible, and time-effective manner, thus providing valuable insights into the physical processes of the deep Earth. This thesis focusses on the system Mg-Fe-O, specifically on the optical properties of periclase (MgO) and its iron-bearing variant ferropericlase ((Mg,Fe)O), forming a major planetary building block. The primary objective is to establish links between physical material properties and optical properties. In particular the spin transition in ferropericlase, the second-most abundant phase of the lower mantle, is known to change the physical material properties. Although the spin transition region likely extends down to the core-mantle boundary, the ef-fects of the mixed-spin state, where both high- and low-spin state are present, remains poorly constrained. In the studies presented herein, we show how optical properties are linked to physical properties such as electrical conductivity, radiative thermal conductivity and viscosity. We also show how the optical properties reveal changes in the chemical bonding. Furthermore, we unveil how the chemical bonding, the optical and other physical properties are affected by the iron spin transition. We find opposing trends in the pres-sure dependence of the refractive index of MgO and (Mg,Fe)O. From 1 atm to ~140 GPa, the refractive index of MgO decreases by ~2.4\% from 1.737 to 1.696 (±0.017). In contrast, the refractive index of (Mg0.87Fe0.13)O (Fp13) and (Mg0.76Fe0.24)O (Fp24) ferropericlase increases with pressure, likely because Fe Fe interactions between adjacent iron sites hinder a strong decrease of polarizability, as it is observed with increasing density in the case of pure MgO. An analysis of the index dispersion in MgO (decreasing by ~23\% from 1 atm to ~103 GPa) reflects a widening of the band gap from ~7.4 eV at 1 atm to ~8.5 (±0.6) eV at ~103 GPa. The index dispersion (between 550 and 870 nm) of Fp13 reveals a decrease by a factor of ~3 over the spin transition range (~44-100 GPa). We show that the electrical band gap of ferropericlase significantly widens up to ~4.7 eV in the mixed spin region, equivalent to an increase by a factor of ~1.7. We propose that this is due to a lower electron mobility between adjacent Fe2+ sites of opposite spin, explaining the previously observed low electrical conductivity in the mixed spin region. From the study of absorbance spectra in Fp13, we show an increasing covalency of the Fe-O bond with pressure for high-spin ferropericlase, whereas in the low-spin state a trend to a more ionic nature of the Fe-O bond is observed, indicating a bond weakening effect of the spin transition. We found that the spin transition is ultimately caused by both an increase of the ligand field-splitting energy and a decreasing spin-pairing energy of high-spin Fe2+.}, language = {en} } @phdthesis{Littmann2024, author = {Littmann, Daniela-Christin}, title = {Large eddy simulations of the Arctic boundary layer around the MOSAiC drift track}, doi = {10.25932/publishup-62437}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-624374}, school = {Universit{\"a}t Potsdam}, pages = {xii, 110}, year = {2024}, abstract = {The icosahedral non-hydrostatic large eddy model (ICON-LEM) was applied around the drift track of the Multidisciplinary Observatory Study of the Arctic (MOSAiC) in 2019 and 2020. The model was set up with horizontal grid-scales between 100m and 800m on areas with radii of 17.5km and 140 km. At its lateral boundaries, the model was driven by analysis data from the German Weather Service (DWD), downscaled by ICON in limited area mode (ICON-LAM) with horizontal grid-scale of 3 km. The aim of this thesis was the investigation of the atmospheric boundary layer near the surface in the central Arctic during polar winter with a high-resolution mesoscale model. The default settings in ICON-LEM prevent the model from representing the exchange processes in the Arctic boundary layer in accordance to the MOSAiC observations. The implemented sea-ice scheme in ICON does not include a snow layer on sea-ice, which causes a too slow response of the sea-ice surface temperature to atmospheric changes. To allow the sea-ice surface to respond faster to changes in the atmosphere, the implemented sea-ice parameterization in ICON was extended with an adapted heat capacity term. The adapted sea-ice parameterization resulted in better agreement with the MOSAiC observations. However, the sea-ice surface temperature in the model is generally lower than observed due to biases in the downwelling long-wave radiation and the lack of complex surface structures, like leads. The large eddy resolving turbulence closure yielded a better representation of the lower boundary layer under strongly stable stratification than the non-eddy-resolving turbulence closure. Furthermore, the integration of leads into the sea-ice surface reduced the overestimation of the sensible heat flux for different weather conditions. The results of this work help to better understand boundary layer processes in the central Arctic during the polar night. High-resolving mesoscale simulations are able to represent temporally and spatially small interactions and help to further develop parameterizations also for the application in regional and global models.}, language = {en} } @phdthesis{WindirschWoiwode2024, author = {Windirsch-Woiwode, Torben}, title = {Permafrost carbon stabilisation by recreating a herbivore-driven ecosystem}, doi = {10.25932/publishup-62424}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-624240}, school = {Universit{\"a}t Potsdam}, pages = {X, 104, A-57}, year = {2024}, abstract = {With Arctic ground as a huge and temperature-sensitive carbon reservoir, maintaining low ground temperatures and frozen conditions to prevent further carbon emissions that contrib-ute to global climate warming is a key element in humankind's fight to maintain habitable con-ditions on earth. Former studies showed that during the late Pleistocene, Arctic ground condi-tions were generally colder and more stable as the result of an ecosystem dominated by large herbivorous mammals and vast extents of graminoid vegetation - the mammoth steppe. Characterised by high plant productivity (grassland) and low ground insulation due to animal-caused compression and removal of snow, this ecosystem enabled deep permafrost aggrad-ation. Now, with tundra and shrub vegetation common in the terrestrial Arctic, these effects are not in place anymore. However, it appears to be possible to recreate this ecosystem local-ly by artificially increasing animal numbers, and hence keep Arctic ground cold to reduce or-ganic matter decomposition and carbon release into the atmosphere. By measuring thaw depth, total organic carbon and total nitrogen content, stable carbon iso-tope ratio, radiocarbon age, n-alkane and alcohol characteristics and assessing dominant vegetation types along grazing intensity transects in two contrasting Arctic areas, it was found that recreating conditions locally, similar to the mammoth steppe, seems to be possible. For permafrost-affected soil, it was shown that intensive grazing in direct comparison to non-grazed areas reduces active layer depth and leads to higher TOC contents in the active layer soil. For soil only frozen on top in winter, an increase of TOC with grazing intensity could not be found, most likely because of confounding factors such as vertical water and carbon movement, which is not possible with an impermeable layer in permafrost. In both areas, high animal activity led to a vegetation transformation towards species-poor graminoid-dominated landscapes with less shrubs. Lipid biomarker analysis revealed that, even though the available organic material is different between the study areas, in both permafrost-affected and sea-sonally frozen soils the organic material in sites affected by high animal activity was less de-composed than under less intensive grazing pressure. In conclusion, high animal activity af-fects decomposition processes in Arctic soils and the ground thermal regime, visible from reduced active layer depth in permafrost areas. Therefore, grazing management might be utilised to locally stabilise permafrost and reduce Arctic carbon emissions in the future, but is likely not scalable to the entire permafrost region.}, language = {en} } @phdthesis{Ketzer2024, author = {Ketzer, Laura}, title = {The impact of stellar activity evolution on atmospheric mass loss of young exoplanets}, doi = {10.25932/publishup-62681}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-626819}, school = {Universit{\"a}t Potsdam}, pages = {x, 208}, year = {2024}, abstract = {The increasing number of known exoplanets raises questions about their demographics and the mechanisms that shape planets into how we observe them today. Young planets in close-in orbits are exposed to harsh environments due to the host star being magnetically highly active, which results in high X-ray and extreme UV fluxes impinging on the planet. Prolonged exposure to this intense photoionizing radiation can cause planetary atmospheres to heat up, expand and escape into space via a hydrodynamic escape process known as photoevaporation. For super-Earth and sub-Neptune-type planets, this can even lead to the complete erosion of their primordial gaseous atmospheres. A factor of interest for this particular mass-loss process is the activity evolution of the host star. Stellar rotation, which drives the dynamo and with it the magnetic activity of a star, changes significantly over the stellar lifetime. This strongly affects the amount of high-energy radiation received by a planet as stars age. At a young age, planets still host warm and extended envelopes, making them particularly susceptible to atmospheric evaporation. Especially in the first gigayear, when X-ray and UV levels can be 100 - 10,000 times higher than for the present-day sun, the characteristics of the host star and the detailed evolution of its high-energy emission are of importance. In this thesis, I study the impact of stellar activity evolution on the high-energy-induced atmospheric mass loss of young exoplanets. The PLATYPOS code was developed as part of this thesis to calculate photoevaporative mass-loss rates over time. The code, which couples parameterized planetary mass-radius relations with an analytical hydrodynamic escape model, was used, together with Chandra and eROSITA X-ray observations, to investigate the future mass loss of the two young multiplanet systems V1298 Tau and K2-198. Further, in a numerical ensemble study, the effect of a realistic spread of activity tracks on the small-planet radius gap was investigated for the first time. The works in this thesis show that for individual systems, in particular if planetary masses are unconstrained, the difference between a young host star following a low-activity track vs. a high-activity one can have major implications: the exact shape of the activity evolution can determine whether a planet can hold on to some of its atmosphere, or completely loses its envelope, leaving only the bare rocky core behind. For an ensemble of simulated planets, an observationally-motivated distribution of activity tracks does not substantially change the final radius distribution at ages of several gigayears. My simulations indicate that the overall shape and slope of the resulting small-planet radius gap is not significantly affected by the spread in stellar activity tracks. However, it can account for a certain scattering or fuzziness observed in and around the radius gap of the observed exoplanet population.}, language = {en} } @techreport{BruttelEisenkopfNithammer2024, type = {Working Paper}, author = {Bruttel, Lisa Verena and Eisenkopf, Gerald and Nithammer, Juri}, title = {Pre-election communication in public good games with endogenous leaders}, series = {CEPA Discussion Papers}, journal = {CEPA Discussion Papers}, number = {73}, issn = {2628-653X}, doi = {10.25932/publishup-62395}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-623952}, pages = {28}, year = {2024}, abstract = {Leadership plays an important role for the efficient and fair solution of social dilemmas but the effectiveness of a leader can vary substantially. Two main factors of leadership impact are the ability to induce high contributions by all group members and the (expected) fair use of power. Participants in our experiment decide about contributions to a public good. After all contributions are made, the leader can choose how much of the joint earnings to assign to herself; the remainder is distributed equally among the followers. Using machine learning techniques, we study whether the content of initial open statements by the group members predicts their behavior as a leader and whether groups are able to identify such clues and endogenously appoint a "good" leader to solve the dilemma. We find that leaders who promise fairness are more likely to behave fairly, and that followers appoint as leaders those who write more explicitly about fairness and efficiency. However, in their contribution decision, followers focus on the leader's first-move contribution and place less importance on the content of the leader's statements.}, language = {en} } @techreport{EstrinKhavulKritikosetal.2024, type = {Working Paper}, author = {Estrin, Saul and Khavul, Susanna and Kritikos, Alexander and L{\"o}her, Jonas}, title = {Access to digital finance}, series = {CEPA Discussion Papers}, journal = {CEPA Discussion Papers}, number = {72}, issn = {2628-653X}, doi = {10.25932/publishup-62326}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-623261}, pages = {27}, year = {2024}, abstract = {Financing entrepreneurship spurs innovation and economic growth. Digital financial platforms that crowdfund equity for entrepreneurs have emerged globally, yet they remain poorly understood. We model equity crowdfunding in terms of the relationship between the number of investors and the amount of money raised per pitch. We examine heterogeneity in the average amount raised per pitch that is associated with differences across three countries and seven platforms. Using a novel dataset of successful fundraising on the most prominent platforms in the UK, Germany, and the USA, we find the underlying relationship between the number of investors and the amount of money raised for entrepreneurs is loglinear, with a coefficient less than one and concave to the origin. We identify significant variation in the average amount invested in each pitch across countries and platforms. Our findings have implications for market actors as well as regulators who set competitive frameworks.}, language = {en} } @techreport{KienbaumFischerPassmann2023, type = {Working Paper}, author = {Kienbaum, Janna and Fischer, Patryk and Passmann, Sven}, title = {Forschungsdatenmanagement bei personenbezogenen Daten}, doi = {10.5281/zenodo.7428524}, pages = {18}, year = {2023}, abstract = {Das Dokument "Forschungsdatenmanagement bei personenbezogenen Daten - eine Handreichung" versammelt zentrale Inhalte, Verweise und Vorgehensweisen f{\"u}r Forscher*innen, die in einer Studie personenbezogene Daten erheben und diese verarbeiten, archivieren oder ver{\"o}ffentlichen wollen. Die Handreichung verweist an den entsprechenden Abschnitten auf weiterf{\"u}hrende Materialien wie insbesondere die Handreichung „Datenschutz" des Rats f{\"u}r die Sozial-, Verhaltens-, Bildungs- und Wirtschaftswissenschaften (RatSWD).}, language = {de} } @article{OgunkolaGuiraudieCaprazFeronetal.2023, author = {Ogunkola, Moses Olalekan and Guiraudie-Capraz, Gaelle and F{\´e}ron, Fran{\c{c}}ois and Leimk{\"u}hler, Silke}, title = {The Human Mercaptopyruvate Sulfurtransferase TUM1 Is Involved in Moco Biosynthesis, Cytosolic tRNA Thiolation and Cellular Bioenergetics in Human Embryonic Kidney Cells}, series = {Biomolecules}, volume = {13}, journal = {Biomolecules}, edition = {1}, publisher = {MDPI}, address = {Basel, Schweiz}, issn = {2218-273X}, doi = {10.3390/biom13010144}, pages = {1 -- 23}, year = {2023}, abstract = {Sulfur is an important element that is incorporated into many biomolecules in humans. The incorporation and transfer of sulfur into biomolecules is, however, facilitated by a series of different sulfurtransferases. Among these sulfurtransferases is the human mercaptopyruvate sulfurtransferase (MPST) also designated as tRNA thiouridine modification protein (TUM1). The role of the human TUM1 protein has been suggested in a wide range of physiological processes in the cell among which are but not limited to involvement in Molybdenum cofactor (Moco) biosynthesis, cytosolic tRNA thiolation and generation of H2S as signaling molecule both in mitochondria and the cytosol. Previous interaction studies showed that TUM1 interacts with the L-cysteine desulfurase NFS1 and the Molybdenum cofactor biosynthesis protein 3 (MOCS3). Here, we show the roles of TUM1 in human cells using CRISPR/Cas9 genetically modified Human Embryonic Kidney cells. Here, we show that TUM1 is involved in the sulfur transfer for Molybdenum cofactor synthesis and tRNA thiomodification by spectrophotometric measurement of the activity of sulfite oxidase and liquid chromatography quantification of the level of sulfur-modified tRNA. Further, we show that TUM1 has a role in hydrogen sulfide production and cellular bioenergetics.}, language = {en} } @article{MarggrafLindeckeVoigtetal.2023, author = {Marggraf, Lara Christin and Lindecke, Oliver and Voigt, Christian C. and Pētersons, Gunārs and Voigt-Heucke, Silke Luise}, title = {Nathusius' bats, Pipistrellus nathusii, bypass mating opportunities of their own species, but respond to foraging heterospecifics on migratory transit flights}, series = {Frontiers in Ecology and Evolution}, journal = {Frontiers in Ecology and Evolution}, publisher = {Frontiers}, address = {Lausanne, Schweiz}, issn = {2296-701X}, doi = {10.3389/fevo.2022.908560}, pages = {1 -- 10}, year = {2023}, abstract = {In late summer, migratory bats of the temperate zone face the challenge of accomplishing two energy-demanding tasks almost at the same time: migration and mating. Both require information and involve search efforts, such as localizing prey or finding potential mates. In non-migrating bat species, playback studies showed that listening to vocalizations of other bats, both con-and heterospecifics, may help a recipient bat to find foraging patches and mating sites. However, we are still unaware of the degree to which migrating bats depend on con-or heterospecific vocalizations for identifying potential feeding or mating opportunities during nightly transit flights. Here, we investigated the vocal responses of Nathusius' pipistrelle bats, Pipistrellus nathusii, to simulated feeding and courtship aggregations at a coastal migration corridor. We presented migrating bats either feeding buzzes or courtship calls of their own or a heterospecific migratory species, the common noctule, Nyctalus noctula. We expected that during migratory transit flights, simulated feeding opportunities would be particularly attractive to bats, as well as simulated mating opportunities which may indicate suitable roosts for a stopover. However, we found that when compared to the natural silence of both pre-and post-playback phases, bats called indifferently during the playback of conspecific feeding sounds, whereas P. nathusii echolocation call activity increased during simulated feeding of N. noctula. In contrast, the call activity of P. nathusii decreased during the playback of conspecific courtship calls, while no response could be detected when heterospecific call types were broadcasted. Our results suggest that while on migratory transits, P. nathusii circumnavigate conspecific mating aggregations, possibly to save time or to reduce the risks associated with social interactions where aggression due to territoriality might be expected. This avoidance behavior could be a result of optimization strategies by P. nathusii when performing long-distance migratory flights, and it could also explain the lack of a response to simulated conspecific feeding. However, the observed increase of activity in response to simulated feeding of N. noctula, suggests that P. nathusii individuals may be eavesdropping on other aerial hawking insectivorous species during migration, especially if these occupy a slightly different foraging niche.}, language = {en} } @article{QuarmbyMoennigMugeleetal.2023, author = {Quarmby, Andrew and M{\"o}nnig, Jamal and Mugele, Hendrik and Henschke, Jakob and Kim, MyoungHwee and Cassel, Michael and Engel, Tilman}, title = {Biomechanics and lower limb function are altered in athletes and runners with achilles tendinopathy compared with healthy controls: A systematic review}, series = {Frontiers in Sports and Active Living}, journal = {Frontiers in Sports and Active Living}, publisher = {Frontiers}, address = {Lausanne, Schweiz}, issn = {2624-9367}, doi = {10.3389/fspor.2022.1012471}, pages = {20}, year = {2023}, abstract = {Achilles tendinopathy (AT) is a debilitating injury in athletes, especially for those engaged in repetitive stretch-shortening cycle activities. Clinical risk factors are numerous, but it has been suggested that altered biomechanics might be associated with AT. No systematic review has been conducted investigating these biomechanical alterations in specifically athletic populations. Therefore, the aim of this systematic review was to compare the lower-limb biomechanics of athletes with AT to athletically matched asymptomatic controls. Databases were searched for relevant studies investigating biomechanics during gait activities and other motor tasks such as hopping, isolated strength tasks, and reflex responses. Inclusion criteria for studies were an AT diagnosis in at least one group, cross-sectional or prospective data, at least one outcome comparing biomechanical data between an AT and healthy group, and athletic populations. Studies were excluded if patients had Achilles tendon rupture/surgery, participants reported injuries other than AT, and when only within-subject data was available.. Effect sizes (Cohen's d) with 95\% confidence intervals were calculated for relevant outcomes. The initial search yielded 4,442 studies. After screening, twenty studies (775 total participants) were synthesised, reporting on a wide range of biomechanical outcomes. Females were under-represented and patients in the AT group were three years older on average. Biomechanical alterations were identified in some studies during running, hopping, jumping, strength tasks and reflex activity. Equally, several biomechanical variables studied were not associated with AT in included studies, indicating a conflicting picture. Kinematics in AT patients appeared to be altered in the lower limb, potentially indicating a pattern of "medial collapse". Muscular activity of the calf and hips was different between groups, whereby AT patients exhibited greater calf electromyographic amplitudes despite lower plantar flexor strength. Overall, dynamic maximal strength of the plantar flexors, and isometric strength of the hips might be reduced in the AT group. This systematic review reports on several biomechanical alterations in athletes with AT. With further research, these factors could potentially form treatment targets for clinicians, although clinical approaches should take other contributing health factors into account. The studies included were of low quality, and currently no solid conclusions can be drawn.}, language = {en} } @article{UllrichAbramowicz2023, author = {Ullrich, Rebecca and Abramowicz, Isidoro}, title = {Ein unbekannter Piyyut f{\"u}r Schabbat aus Reckendorf}, series = {Genisa-Bl{\"a}tter IV}, journal = {Genisa-Bl{\"a}tter IV}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-539-2}, doi = {10.25932/publishup-58489}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-584897}, pages = {73 -- 82}, year = {2023}, language = {de} } @phdthesis{Ehlert2023, author = {Ehlert, Kristian}, title = {Simulations of active galactic nuclei feedback with cosmic rays and magnetic fields}, doi = {10.25932/publishup-57816}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-578168}, school = {Universit{\"a}t Potsdam}, pages = {155}, year = {2023}, abstract = {The central gas in half of all galaxy clusters shows short cooling times. Assuming unimpeded cooling, this should lead to high star formation and mass cooling rates, which are not observed. Instead, it is believed that condensing gas is accreted by the central black hole that powers an active galactic nuclei jet, which heats the cluster. The detailed heating mechanism remains uncertain. A promising mechanism invokes cosmic ray protons that scatter on self-generated magnetic fluctuations, i.e. Alfv{\´e}n waves. Continuous damping of Alfv{\´e}n waves provides heat to the intracluster medium. Previous work has found steady state solutions for a large sample of clusters where cooling is balanced by Alfv{\´e}nic wave heating. To verify modeling assumptions, we set out to study cosmic ray injection in three-dimensional magnetohydrodynamical simulations of jet feedback in an idealized cluster with the moving-mesh code arepo. We analyze the interaction of jet-inflated bubbles with the turbulent magnetized intracluster medium. Furthermore, jet dynamics and heating are closely linked to the largely unconstrained jet composition. Interactions of electrons with photons of the cosmic microwave background result in observational signatures that depend on the bubble content. Those recent observations provided evidence for underdense bubbles with a relativistic filling while adopting simplifying modeling assumptions for the bubbles. By reproducing the observations with our simulations, we confirm the validity of their modeling assumptions and as such, confirm the important finding of low-(momentum) density jets. In addition, the velocity and magnetic field structure of the intracluster medium have profound consequences for bubble evolution and heating processes. As velocity and magnetic fields are physically coupled, we demonstrate that numerical simulations can help link and thereby constrain their respective observables. Finally, we implement the currently preferred accretion model, cold accretion, into the moving-mesh code arepo and study feedback by light jets in a radiatively cooling magnetized cluster. While self-regulation is attained independently of accretion model, jet density and feedback efficiencies, we find that in order to reproduce observed cold gas morphology light jets are preferred.}, language = {en} } @phdthesis{Rolo2023, author = {Rolo, David}, title = {Assembly of photosystem I in thylakoid membranes}, school = {Universit{\"a}t Potsdam}, pages = {177}, year = {2023}, abstract = {The light reactions of photosynthesis are carried out by a series of multiprotein complexes embedded in thylakoid membranes. Among them, photosystem I (PSI), acting as plastocyanin-ferderoxin oxidoreductase, catalyzes the final reaction. Together with light-harvesting antenna I, PSI forms a high-molecular-weight supercomplex of ~600 kDa, consisting of eighteen subunits and nearly two hundred co-factors. Assembly of the various components into a functional thylakoid membrane complex requires precise coordination, which is provided by the assembly machinery. Although this includes a small number of proteins (PSI assembly factors) that have been shown to play a role in the formation of PSI, the process as a whole, as well as the intricacy of its members, remains largely unexplored. In the present work, two approaches were used to find candidate PSI assembly factors. First, EnsembleNet was used to select proteins thought to be functionally related to known PSI assembly factors in Arabidopsis thaliana (approach I), and second, co-immunoprecipitation (Co-IP) of tagged PSI assembly factors in Nicotiana tabacum was performed (approach II). Here, the novel PSI assembly factors designated CO-EXPRESSED WITH PSI ASSEMBLY 1 (CEPA1) and Ycf4-INTERACTING PROTEIN 1 (Y4IP1) were identified. A. thaliana null mutants for CEPA1 and Y4IP1 showed a growth phenotype and pale leaves compared with the wild type. Biophysical experiments using pulse amplitude modulation (PAM) revealed insufficient electron transport on the PSII acceptor side. Biochemical analyses revealed that both CEPA1 and Y4IP1 are specifically involved in PSI accumulation in A. thaliana at the post-translational level but are not essential. Consistent with their roles as factors in the assembly of a thylakoid membrane protein complex, the two proteins localize to thylakoid membranes. Remarkably, cepa1 y4ip1 double mutants exhibited lethal phenotypes in early developmental stages under photoautotrophic growth. Finally, co-IP and native gel experiments supported a possible role for CEPA1 and Y4IP1 in mediating PSI assembly in conjunction with other PSI assembly factors (e.g., PPD1- and PSA3-CEPA1 and Ycf4-Y4IP1). The fact that CEPA1 and Y4IP1 are found exclusively in green algae and higher plants suggests eukaryote-specific functions. Although the specific mechanisms need further investigation, CEPA1 and Y4IP1 are two novel assembly factors that contribute to PSI formation.}, language = {en} } @phdthesis{DeAndradeQueiroz2023, author = {De Andrade Queiroz, Anna Barbara}, title = {The Milky Way disks, bulge, and bar sub-populations}, doi = {10.25932/publishup-59061}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-590615}, school = {Universit{\"a}t Potsdam}, pages = {xii, 187}, year = {2023}, abstract = {In recent decades, astronomy has seen a boom in large-scale stellar surveys of the Galaxy. The detailed information obtained about millions of individual stars in the Milky Way is bringing us a step closer to answering one of the most outstanding questions in astrophysics: how do galaxies form and evolve? The Milky Way is the only galaxy where we can dissect many stars into their high-dimensional chemical composition and complete phase space, which analogously as fossil records can unveil the past history of the genesis of the Galaxy. The processes that lead to large structure formation, such as the Milky Way, are critical for constraining cosmological models; we call this line of study Galactic archaeology or near-field cosmology. At the core of this work, we present a collection of efforts to chemically and dynamically characterise the disks and bulge of our Galaxy. The results we present in this thesis have only been possible thanks to the advent of the Gaia astrometric satellite, which has revolutionised the field of Galactic archaeology by precisely measuring the positions, parallax distances and motions of more than a billion stars. Another, though not less important, breakthrough is the APOGEE survey, which has observed spectra in the near-infrared peering into the dusty regions of the Galaxy, allowing us to determine detailed chemical abundance patterns in hundreds of thousands of stars. To accurately depict the Milky Way structure, we use and develop the Bayesian isochrone fitting tool/code called StarHorse; this software can predict stellar distances, extinctions and ages by combining astrometry, photometry and spectroscopy based on stellar evolutionary models. The StarHorse code is pivotal to calculating distances where Gaia parallaxes alone cannot allow accurate estimates. We show that by combining Gaia, APOGEE, photometric surveys and using StarHorse, we can produce a chemical cartography of the Milky way disks from their outermost to innermost parts. Such a map is unprecedented in the inner Galaxy. It reveals a continuity of the bimodal chemical pattern previously detected in the solar neighbourhood, indicating two populations with distinct formation histories. Furthermore, the data reveals a chemical gradient within the thin disk where the content of 𝛼-process elements and metals is higher towards the centre. Focusing on a sample in the inner MW we confirm the extension of the chemical duality to the innermost regions of the Galaxy. We find stars with bar shape orbits to show both high- and low-𝛼 abundances, suggesting the bar formed by secular evolution trapping stars that already existed. By analysing the chemical orbital space of the inner Galactic regions, we disentangle the multiple populations that inhabit this complex region. We reveal the presence of the thin disk, thick disk, bar, and a counter-rotating population, which resembles the outcome of a perturbed proto-Galactic disk. Our study also finds that the inner Galaxy holds a high quantity of super metal-rich stars up to three times solar suggesting it is a possible repository of old super-metal-rich stars found in the solar neighbourhood. We also enter into the complicated task of deriving individual stellar ages. With StarHorse, we calculate the ages of main-sequence turn-off and sub-giant stars for several public spectroscopic surveys. We validate our results by investigating linear relations between chemical abundances and time since the 𝛼 and neutron capture elements are sensitive to age as a reflection of the different enrichment timescales of these elements. For further study of the disks in the solar neighbourhood, we use an unsupervised machine learning algorithm to delineate a multidimensional separation of chrono-chemical stellar groups revealing the chemical thick disk, the thin disk, and young 𝛼-rich stars. The thick disk is shown to have a small age dispersion indicating its fast formation contrary to the thin disk that spans a wide range of ages. With groundbreaking data, this thesis encloses a detailed chemo-dynamical view of the disk and bulge of our Galaxy. Our findings on the Milky Way can be linked to the evolution of high redshift disk galaxies, helping to solve the conundrum of galaxy formation.}, language = {en} } @phdthesis{Werhahn2023, author = {Werhahn, Maria}, title = {Simulating galaxy evolution with cosmic rays: the multi-frequency view}, doi = {10.25932/publishup-57285}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-572851}, school = {Universit{\"a}t Potsdam}, pages = {5, 220}, year = {2023}, abstract = {Cosmic rays (CRs) constitute an important component of the interstellar medium (ISM) of galaxies and are thought to play an essential role in governing their evolution. In particular, they are able to impact the dynamics of a galaxy by driving galactic outflows or heating the ISM and thereby affecting the efficiency of star-formation. Hence, in order to understand galaxy formation and evolution, we need to accurately model this non-thermal constituent of the ISM. But except in our local environment within the Milky Way, we do not have the ability to measure CRs directly in other galaxies. However, there are many ways to indirectly observe CRs via the radiation they emit due to their interaction with magnetic and interstellar radiation fields as well as with the ISM. In this work, I develop a numerical framework to calculate the spectral distribution of CRs in simulations of isolated galaxies where a steady-state between injection and cooling is assumed. Furthermore, I calculate the non-thermal emission processes arising from the modelled CR proton and electron spectra ranging from radio wavelengths up to the very high-energy gamma-ray regime. I apply this code to a number of high-resolution magneto-hydrodynamical (MHD) simulations of isolated galaxies, where CRs are included. This allows me to study their CR spectra and compare them to observations of the CR proton and electron spectra by the Voyager-1 satellite and the AMS-02 instrument in order to reveal the origin of the measured spectral features. Furthermore, I provide detailed emission maps, luminosities and spectra of the non-thermal emission from our simulated galaxies that range from dwarfs to Milk-Way analogues to starburst galaxies at different evolutionary stages. I successfully reproduce the observed relations between the radio and gamma-ray luminosities with the far-infrared (FIR) emission of star-forming (SF) galaxies, respectively, where the latter is a good tracer of the star-formation rate. I find that highly SF galaxies are close to the limit where their CR population would lose all of their energy due to the emission of radiation, whereas CRs tend to escape low SF galaxies more quickly. On top of that, I investigate the properties of CR transport that are needed in order to match the observed gamma-ray spectra. Furthermore, I uncover the underlying processes that enable the FIR-radio correlation (FRC) to be maintained even in starburst galaxies and find that thermal free-free-emission naturally explains the observed radio spectra in SF galaxies like M82 and NGC 253 thus solving the riddle of flat radio spectra that have been proposed to contradict the observed tight FRC. Lastly, I scrutinise the steady-state modelling of the CR proton component by investigating for the first time the influence of spectrally resolved CR transport in MHD simulations on the hadronic gamma-ray emission of SF galaxies revealing new insights into the observational signatures of CR transport both spectrally and spatially.}, language = {en} } @article{SmithZottaBoultonetal.2023, author = {Smith, Taylor and Zotta, Ruxandra-Maria and Boulton, Chris A. and Lenton, Timothy M. and Dorigo, Wouter and Boers, Niklas}, title = {Reliability of resilience estimation based on multi-instrument time series}, series = {Earth System Dynamics}, volume = {14}, journal = {Earth System Dynamics}, publisher = {Copernicus Publications}, address = {G{\"o}ttingen}, issn = {2190-4987}, doi = {10.5194/esd-14-173-2023}, pages = {173 -- 183}, year = {2023}, abstract = {Many widely used observational data sets are comprised of several overlapping instrument records. While data inter-calibration techniques often yield continuous and reliable data for trend analysis, less attention is generally paid to maintaining higher-order statistics such as variance and autocorrelation. A growing body of work uses these metrics to quantify the stability or resilience of a system under study and potentially to anticipate an approaching critical transition in the system. Exploring the degree to which changes in resilience indicators such as the variance or autocorrelation can be attributed to non-stationary characteristics of the measurement process - rather than actual changes in the dynamical properties of the system - is important in this context. In this work we use both synthetic and empirical data to explore how changes in the noise structure of a data set are propagated into the commonly used resilience metrics lag-one autocorrelation and variance. We focus on examples from remotely sensed vegetation indicators such as vegetation optical depth and the normalized difference vegetation index from different satellite sources. We find that time series resulting from mixing signals from sensors with varied uncertainties and covering overlapping time spans can lead to biases in inferred resilience changes. These biases are typically more pronounced when resilience metrics are aggregated (for example, by land-cover type or region), whereas estimates for individual time series remain reliable at reasonable sensor signal-to-noise ratios. Our work provides guidelines for the treatment and aggregation of multi-instrument data in studies of critical transitions and resilience.}, language = {en} } @phdthesis{Kruse2023, author = {Kruse, Marlen}, title = {Characterization of biomolecules and their interactions using electrically controllable DNA nanolevers}, doi = {10.25932/publishup-57738}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-577384}, school = {Universit{\"a}t Potsdam}, pages = {100, xxii}, year = {2023}, abstract = {In this work, binding interactions between biomolecules were analyzed by a technique that is based on electrically controllable DNA nanolevers. The technique was applied to virus-receptor interactions for the first time. As receptors, primarily peptides on DNA nanostructures and antibodies were utilized. The DNA nanostructures were integrated into the measurement technique and enabled the presentation of the peptides in a controllable geometrical order. The number of peptides could be varied to be compatible to the binding sites of the viral surface proteins. Influenza A virus served as a model system, on which the general measurability was demonstrated. Variations of the receptor peptide, the surface ligand density, the measurement temperature and the virus subtypes showed the sensitivity and applicability of the technology. Additionally, the immobilization of virus particles enabled the measurement of differences in oligovalent binding of DNA-peptide nanostructures to the viral proteins in their native environment. When the coronavirus pandemic broke out in 2020, work on binding interactions of a peptide from the hACE2 receptor and the spike protein of the SARS-CoV-2 virus revealed that oligovalent binding can be quantified in the switchSENSE technology. It could also be shown that small changes in the amino acid sequence of the spike protein resulted in complete loss of binding. Interactions of the peptide and inactivated virus material as well as pseudo virus particles could be measured. Additionally, the switchSENSE technology was utilized to rank six antibodies for their binding affinity towards the nucleocapsid protein of SARS-CoV-2 for the development of a rapid antigen test device. The technique was furthermore employed to show binding of a non-enveloped virus (adenovirus) and a virus-like particle (norovirus-like particle) to antibodies. Apart from binding interactions, the use of DNA origami levers with a length of around 50 nm enabled the switching of virus material. This proved that the technology is also able to size objects with a hydrodynamic diameter larger than 14 nm. A theoretical work on diffusion and reaction-limited binding interactions revealed that the technique and the chosen parameters enable the determination of binding rate constants in the reaction-limited regime. Overall, the applicability of the switchSENSE technique to virus-receptor binding interactions could be demonstrated on multiple examples. While there are challenges that remain, the setup enables the determination of affinities between viruses and receptors in their native environment. Especially the possibilities regarding the quantification of oligo- and multivalent binding interactions could be presented.}, language = {en} } @phdthesis{Drobyshev2023, author = {Drobyshev, Evgenii}, title = {Toxic or beneficial? What is the role of food-relevant selenium species selenoneine?}, doi = {10.25932/publishup-57379}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-573794}, school = {Universit{\"a}t Potsdam}, pages = {xiv, 100}, year = {2023}, abstract = {Selenium (Se) is an essential trace element that is ubiquitously present in the environment in small concentrations. Essential functions of Se in the human body are manifested through the wide range of proteins, containing selenocysteine as their active center. Such proteins are called selenoproteins which are found in multiple physiological processes like antioxidative defense and the regulation of thyroid hormone functions. Therefore, Se deficiency is known to cause a broad spectrum of physiological impairments, especially in endemic regions with low Se content. Nevertheless, being an essential trace element, Se could exhibit toxic effects, if its intake exceeds tolerable levels. Accordingly, this range between deficiency and overexposure represents optimal Se supply. However, this range was found to be narrower than for any other essential trace element. Together with significantly varying Se concentrations in soil and the presence of specific bioaccumulation factors, this represents a noticeable difficulty in the assessment of Se epidemiological status. While Se is acting in the body through multiple selenoproteins, its intake occurs mainly in form of small organic or inorganic molecular mass species. Thus, Se exposure not only depends on daily intake but also on the respective chemical form, in which it is present. The essential functions of selenium have been known for a long time and its primary forms in different food sources have been described. Nevertheless, analytical capabilities for a comprehensive investigation of Se species and their derivatives have been introduced only in the last decades. A new Se compound was identified in 2010 in the blood and tissues of bluefin tuna. It was called selenoneine (SeN) since it is an isologue of naturally occurring antioxidant ergothioneine (ET), where Se replaces sulfur. In the following years, SeN was identified in a number of edible fish species and attracted attention as a new dietary Se source and potentially strong antioxidant. Studies in populations whose diet largely relies on fish revealed that SeN represents the main non-protein bound Se pool in their blood. First studies, conducted with enriched fish extracts, already demonstrated the high antioxidative potential of SeN and its possible function in the detoxification of methylmercury in fish. Cell culture studies demonstrated, that SeN can utilize the same transporter as ergothioneine, and SeN metabolite was found in human urine. Until recently, studies on SeN properties were severely limited due to the lack of ways to obtain the pure compound. As a predisposition to this work was firstly a successful approach to SeN synthesis in the University of Graz, utilizing genetically modified yeasts. In the current study, by use of HepG2 liver carcinoma cells, it was demonstrated, that SeN does not cause toxic effectsup to 100 μM concentration in hepatocytes. Uptake experiments showed that SeN is not bioavailable to the used liver cells. In the next part a blood-brain barrier (BBB) model, based on capillary endothelial cells from the porcine brain, was used to describe the possible transfer of SeN into the central nervous system (CNS). The assessment of toxicity markers in these endothelial cells and monitoring of barrier conditions during transfer experiments demonstrated the absence of toxic effects from SeN on the BBB endothelium up to 100 μM concentration. Transfer data for SeN showed slow but substantial transfer. A statistically significant increase was observed after 48 hours following SeN incubation from the blood-facing side of the barrier. However, an increase in Se content was clearly visible already after 6 hours of incubation with 1 μM of SeN. While the transfer rate of SeN after application of 0.1 μM dose was very close to that for 1 μM, incubation with 10 μM of SeN resulted in a significantly decreased transfer rate. Double-sided application of SeN caused no side-specific transfer of SeN, thus suggesting a passive diffusion mechanism of SeN across the BBB. This data is in accordance with animal studies, where ET accumulation was observed in the rat brain, even though rat BBB does not have the primary ET transporter - OCTN1. Investigation of capillary endothelial cell monolayers after incubation with SeN and reference selenium compounds showed no significant increase of intracellular selenium concentration. Speciesspecific Se measurements in medium samples from apical and basolateral compartments, as good as in cell lysates, showed no SeN metabolization. Therefore, it can be concluded that SeN may reach the brain without significant transformation. As the third part of this work, the assessment of SeN antioxidant properties was performed in Caco-2 human colorectal adenocarcinoma cells. Previous studies demonstrated that the intestinal epithelium is able to actively transport SeN from the intestinal lumen to the blood side and accumulate SeN. Further investigation within current work showed a much higher antioxidant potential of SeN compared to ET. The radical scavenging activity after incubation with SeN was close to the one observed for selenite and selenomethionine. However, the SeN effect on the viability of intestinal cells under oxidative conditions was close to the one caused by ET. To answer the question if SeN is able to be used as a dietary Se source and induce the activity of selenoproteins, the activity of glutathione peroxidase (GPx) and the secretion of selenoprotein P (SelenoP) were measured in Caco-2 cells, additionally. As expected, reference selenium compounds selenite and selenomethionine caused efficient induction of GPx activity. In contrast to those SeN had no effect on GPx activity. To examine the possibility of SeN being embedded into the selenoproteome, SelenoP was measured in a culture medium. Even though Caco-2 cells effectively take up SeN in quantities much higher than selenite or selenomethionine, no secretion of SelenoP was observed after SeN incubation. Summarizing, we can conclude that SeN can hardly serve as a Se source for selenoprotein synthesis. However, SeN exhibit strong antioxidative properties, which appear when sulfur in ET is exchanged by Se. Therefore, SeN is of particular interest for research not as part of Se metabolism, but important endemic dietary antioxidant.}, language = {en} } @article{Felsing2023, author = {Felsing, Ulrike}, title = {Elternpartizipation: Hand in Hand - wie die Kommunikation zwischen Therapeut:innen und Eltern gelingt}, series = {Spektrum Patholinguistik 16}, journal = {Spektrum Patholinguistik 16}, number = {16}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-559-0}, issn = {1866-9433}, doi = {10.25932/publishup-61339}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-613395}, pages = {1 -- 14}, year = {2023}, abstract = {F{\"u}r eine gelingende Kommunikation und Zusammenarbeit zwischen Therapeut:innen und Eltern sind meines Erachtens zwei Aspekte wesentlich: die therapeutische Haltung/innere Einstellung zur Beziehungsgestaltung auf Seiten der Therapeut:innen sowie ihr Wissen und die F{\"a}higkeiten, Eltern ganz pragmatisch in den therapeutischen Prozess einzubinden.}, language = {de} } @phdthesis{Galushchinskiy2023, author = {Galushchinskiy, Alexey}, title = {Carbon nitride: a flexible platform for net-oxidative and net-neutral photocatalysis}, doi = {10.25932/publishup-61092}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-610923}, school = {Universit{\"a}t Potsdam}, pages = {351}, year = {2023}, abstract = {Solar photocatalysis is the one of leading concepts of research in the current paradigm of sustainable chemical industry. For actual practical implementation of sunlight-driven catalytic processes in organic synthesis, a cheap, efficient, versatile and robust heterogeneous catalyst is necessary. Carbon nitrides are a class of organic semiconductors who are known to fulfill these requirements. First, current state of solar photocatalysis in economy, industry and lab research is overviewed, outlining EU project funding, prospective synthetic and reforming bulk processes, small scale solar organic chemistry, and existing reactor designs and prototypes, concluding feasibility of the approach. Then, the photocatalytic aerobic cleavage of oximes to corresponding aldehydes and ketones by anionic poly(heptazine imide) carbon nitride is discussed. The reaction provides a feasible method of deprotection and formation of carbonyl compounds from nitrosation products and serves as a convenient model to study chromoselectivity and photophysics of energy transfer in heterogeneous photocatalysis. Afterwards, the ability of mesoporous graphitic carbon nitride to conduct proton-coupled electron transfer was utilized for the direct oxygenation of 1,3-oxazolidin-2-ones to corresponding 1,3-oxazlidine-2,4-diones. This reaction provides an easier access to a key scaffold of diverse types of drugs and agrochemicals. Finally, a series of novel carbon nitrides based on poly(triazine imide) and poly(heptazine imide) structure was synthesized from cyanamide and potassium rhodizonate. These catalysts demonstrated a good performance in a set of photocatalytic benchmark reactions, including aerobic oxidation, dual nickel photoredox catalysis, hydrogen peroxide evolution and chromoselective transformation of organosulfur precursors. Concluding, the scope of carbon nitride utilization for net-oxidative and net-neutral photocatalytic processes was expanded, and a new tunable platform for catalyst synthesis was discovered.}, language = {en} } @misc{Paetzel2023, type = {Master Thesis}, author = {P{\"a}tzel, Jonas}, title = {Seismic site characterization using broadband and DAS ambient vibration measurements on Mt Etna, Italy}, doi = {10.25932/publishup-61379}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-613793}, school = {Universit{\"a}t Potsdam}, pages = {95}, year = {2023}, abstract = {Both horizontal-to-vertical (H/V) spectral ratios and the spatial autocorrelation method (SPAC) have proven to be valuable tools to gain insight into local site effects by ambient noise measurements. Here, the two methods are employed to assess the subsurface velocity structure at the Piano delle Concazze area on Mt Etna. Volcanic tremor records from an array of 26 broadband seismometers is processed and a strong variability of H/V ratios during periods of increased volcanic activity is found. From the spatial distribution of H/V peak frequencies, a geologic structure in the north-east of Piano delle Concazze is imaged which is interpreted as the Ellittico caldera rim. The method is extended to include both velocity data from the broadband stations and distributed acoustic sensing data from a co-located 1.5 km long fibre optic cable. High maximum amplitude values of the resulting ratios along the trajectory of the cable coincide with known faults. The outcome also indicates previously unmapped parts of a fault. The geologic interpretation is in good agreement with inversion results from magnetic survey data. Using the neighborhood algorithm, spatial autocorrelation curves obtained from the modified SPAC are inverted alone and jointly with the H/V peak frequencies for 1D shear wave velocity profiles. The obtained models are largely consistent with published models and were able to validate the results from the fibre optic cable.}, language = {en} } @book{HannesenWienfortLuhetal.2023, author = {Hannesen, Hans Gerhard and Wienfort, Monika and Luh, J{\"u}rgen and D'Aprile, Iwan-Michelangelo and Radtke, Wolfgang and Bredekamp, Horst and Usenbinz, Kay and Parzinger, Hermann}, title = {Die Preußische Seehandlung zwischen Markt, Staat und Kultur}, editor = {Wienfort, Monika}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-562-0}, doi = {10.25932/publishup-59252}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-592521}, publisher = {Universit{\"a}t Potsdam}, pages = {168}, year = {2023}, abstract = {Die K{\"o}niglich Preußische Seehandlung, nach der heute die „Stiftung Preußische Seehandlung" benannt ist, besitzt eine lange und vielseitige Geschichte. Der anl{\"a}sslich des Stiftungsjubil{\"a}ums erscheinende Band wirft einen Blick auf die Gr{\"u}ndungskonstellation 1772, als K{\"o}nig Friedrich II. die Gewerbe in Preußen f{\"o}rdern wollte. Er zeichnet die Aktivit{\"a}ten von M{\"a}nnern an der Spitze der Seehandlung nach, wie Finanzminister Carl August von Struensee und dem unternehmerisch denkenden Karrierebeamten Christian Rother. Das Geb{\"a}ude der Seehandlung wurde nach 1900 neu erbaut und ist heute in der Berlin-Brandenburgischen Akademie am Gendarmenmarkt lebendige Gegenwart. Die Seehandlung erhielt von ihren Zeitgenossen im 19. Jahrhundert ambivalente Urteile. Ein Ausblick auf die Geschichte der Stiftung Preußische Seehandlung seit 1983 zeigt das Bem{\"u}hen um Kunst- und Kulturf{\"o}rderung als zentrale Aufgabe.}, language = {de} } @article{HeisselPietrekKangasetal.2023, author = {Heissel, Andreas and Pietrek, Anou F. and Kangas, Maria and Van der Kaap-Deeder, Jolene and Rapp, Michael Armin}, title = {The Mediating Role of Rumination in the Relation between Basic Psychological Need Frustration and Depressive Symptoms}, series = {Journal of Clinical Medicine}, volume = {12}, journal = {Journal of Clinical Medicine}, edition = {2}, publisher = {MDPI}, address = {Basel, Schweiz}, issn = {2077-0383}, doi = {10.3390/jcm12020395}, pages = {1 -- 10}, year = {2023}, abstract = {Research within the framework of Basic Psychological Need Theory (BPNT) finds strong associations between basic need frustration and depressive symptoms. This study examined the role of rumination as an underlying mechanism in the association between basic psychological need frustration and depressive symptoms. A cross-sectional sample of N = 221 adults (55.2\% female, mean age = 27.95, range = 18-62, SD = 10.51) completed measures assessing their level of basic psychological need frustration, rumination, and depressive symptoms. Correlational analyses and multiple mediation models were conducted. Brooding partially mediated the relation between need frustration and depressive symptoms. BPNT and Response Styles Theory are compatible and can further advance knowledge about depression vulnerabilities.}, language = {en} } @phdthesis{HerreroAlonso2023, author = {Herrero Alonso, Yohana}, title = {Properties of high-redshift galaxies in different environments}, doi = {10.25932/publishup-61328}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-613288}, school = {Universit{\"a}t Potsdam}, pages = {xiii, 114}, year = {2023}, abstract = {The Lyman-𝛼 (Ly𝛼) line commonly assists in the detection of high-redshift galaxies, the so-called Lyman-alpha emitters (LAEs). LAEs are useful tools to study the baryonic matter distribution of the high-redshift universe. Exploring their spatial distribution not only reveals the large-scale structure of the universe at early epochs, but it also provides an insight into the early formation and evolution of the galaxies we observe today. Because dark matter halos (DMHs) serve as sites of galaxy formation, the LAE distribution also traces that of the underlying dark matter. However, the details of this relation and their co-evolution over time remain unclear. Moreover, theoretical studies predict that the spatial distribution of LAEs also impacts their own circumgalactic medium (CGM) by influencing their extended Ly𝛼 gaseous halos (LAHs), whose origin is still under investigation. In this thesis, I make several contributions to improve the knowledge on these fields using samples of LAEs observed with the Multi Unit Spectroscopic Explorer (MUSE) at redshifts of 3 < 𝑧 < 6.}, language = {en} } @phdthesis{Stanke2023, author = {Stanke, Sandra}, title = {AC electrokinetic immobilization of influenza viruses and antibodies on nanoelectrode arrays for on-chip immunoassays}, doi = {10.25932/publishup-61716}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-617165}, school = {Universit{\"a}t Potsdam}, pages = {x, 115}, year = {2023}, abstract = {In the present thesis, AC electrokinetic forces, like dielectrophoresis and AC electroosmosis, were demonstrated as a simple and fast method to functionalize the surface of nanoelectrodes with submicrometer sized biological objects. These nanoelectrodes have a cylindrical shape with a diameter of 500 nm arranged in an array of 6256 electrodes. Due to its medical relevance influenza virus as well as anti-influenza antibodies were chosen as a model organism. Common methods to bring antibodies or proteins to biosensor surfaces are complex and time-consuming. In the present work, it was demonstrated that by applying AC electric fields influenza viruses and antibodies can be immobilized onto the nanoelectrodes within seconds without any prior chemical modification of neither the surface nor the immobilized biological object. The distribution of these immobilized objects is not uniform over the entire array, it exhibits a decreasing gradient from the outer row to the inner ones. Different causes for this gradient have been discussed, such as the vortex-shaped fluid motion above the nanoelectrodes generated by, among others, electrothermal fluid flow. It was demonstrated that parts of the accumulated material are permanently immobilized to the electrodes. This is a unique characteristic of the presented system since in the literature the AC electrokinetic immobilization is almost entirely presented as a method just for temporary immobilization. The spatial distribution of the immobilized viral material or the anti-influenza antibodies at the electrodes was observed by either the combination of fluorescence microscopy and deconvolution or by super-resolution microscopy (STED). On-chip immunoassays were performed to examine the suitability of the functionalized electrodes as a potential affinity-based biosensor. Two approaches were pursued: A) the influenza virus as the bio-receptor or B) the influenza virus as the analyte. Different sources of error were eliminated by ELISA and passivation experiments. Hence, the activity of the immobilized object was inspected by incubation with the analyte. This resulted in the successful detection of anti-influenza antibodies by the immobilized viral material. On the other hand, a detection of influenza virus particles by the immobilized anti-influenza antibodies was not possible. The latter might be due to lost activity or wrong orientation of the antibodies. Thus, further examinations on the activity of by AC electric fields immobilized antibodies should follow. When combined with microfluidics and an electrical read-out system, the functionalized chips possess the potential to serve as a rapid, portable, and cost-effective point-of-care (POC) device. This device can be utilized as a basis for diverse applications in diagnosing and treating influenza, as well as various other pathogens.}, language = {en} } @article{SingerBrehm2023, author = {Singer-Brehm, Elisabeth}, title = {‚Maise Jeschurun'}, series = {Genisa-Bl{\"a}tter IV}, journal = {Genisa-Bl{\"a}tter IV}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-539-2}, doi = {10.25932/publishup-58493}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-584932}, pages = {129 -- 157}, year = {2023}, language = {de} } @article{Ulična2023, author = {Uličn{\´a}, Lenka}, title = {Zur Unheil abwendenden Funktion der Genisa}, series = {Genisa-Bl{\"a}tter IV}, journal = {Genisa-Bl{\"a}tter IV}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-539-2}, doi = {10.25932/publishup-58486}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-584868}, pages = {27 -- 39}, year = {2023}, language = {de} } @article{CohenHattab2023, author = {Cohen-Hattab, Kobi}, title = {Pioneers of Independent Jewish Shipping}, series = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, journal = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, number = {28}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-552-1}, issn = {1614-6492}, doi = {10.25932/publishup-58554}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585542}, pages = {34 -- 50}, year = {2023}, abstract = {The birth of the Yishuv's national shipping company, ZIM was preceded by private enterprise; the sea had not traditionally been a focus of the Zionist movement. In the 1930s, a five-year span of private commercial shipping saw three companies in the Jewish community in Palestine - Palestine Shipping Company, Palestine Maritime Lloyd, and Atid - before shipping was cut short by the outbreak of the Second World War. Despite their brief lifespans and their negligible contribution to general shipping, these companies constituted an important milestone. Their existence helped shift the Yishuv leadership's attitudes about shipping's importance for the community and the need for it to be supported by national institutions.}, language = {en} } @article{Weinmann2023, author = {Weinmann, Franziska}, title = {Mothers of Seafaring}, series = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, journal = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, number = {28}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-552-1}, issn = {1614-6492}, doi = {10.25932/publishup-58556}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585563}, pages = {52 -- 67}, year = {2023}, abstract = {The article aims to trace the contribution of Jewish women in the Yishuv's maritime history. Taking the example of Henrietta Diamond, a founding member and chairperson of the Zebulun Seafaring Society, the article seeks to explore the representation and role of women in a growing Jewish maritime domain from the 1930s to the 1950s. It examines Zionist narratives on the 'New Jew' and the Jewish body and studies their relevance for the emerging field of maritime activities in the Yishuv. By contextualizing the work and depiction of Henrietta Diamond, the article sheds new light on the gendered notions that underlay the emergence of the Jewish maritime domain and illustrates the patterns of inclusion and exclusion in it.}, language = {en} } @masterthesis{Eggers2023, type = {Bachelor Thesis}, author = {Eggers, Nele}, title = {Properties of Arctic aerosol in the transition between Arctic haze to summer season derived by lidar}, doi = {10.25932/publishup-61943}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-619438}, school = {Universit{\"a}t Potsdam}, pages = {x, 63}, year = {2023}, abstract = {During the Arctic haze period, the Arctic troposphere consists of larger, yet fewer, aerosol particles than during the summer (Tunved et al., 2013; Quinn et al., 2007). Interannual variability (Graßl and Ritter, 2019; Rinke et al., 2004), as well as unknown origins (Stock et al., 2014) and properties of aerosol complicate modeling these annual aerosol cycles. This thesis investigates the modification of the microphysical properties of Arctic aerosols in the transition from Arctic haze to the summer season. Therefore, lidar measurements of Ny-{\AA}lesund from April 2021 to the end of July 2021 are evaluated based on the aerosols' optical properties. An overview of those properties will be provided. Furthermore, parallel radiosonde data is considered for indication of hygroscopic growth. The annual aerosol cycle in 2021 differs from expectations based on previous studies from Tunved et al. (2013) and Quinn et al. (2007). Developments of backscatter, extinction, aerosol depolarisation, lidar ratio and color ratio show a return of the Arctic haze in May. The haze had already reduced in April, but regrew afterwards. The average Arctic aerosol displays hygroscopic behaviour, meaning growth due to water uptake. To determine such a behaviour is generally laborious because various meteorological circumstances need to be considered. Two case studies provide further information on these possible events. In particular, a day with a rare ice cloud and with highly variable water cloud layers is observed.}, language = {en} } @phdthesis{Pons2023, author = {Pons, Micha{\"e}l}, title = {The Nature of the tectonic shortening in Central Andes}, doi = {10.25932/publishup-60089}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-600892}, school = {Universit{\"a}t Potsdam}, pages = {160}, year = {2023}, abstract = {The Andean Cordillera is a mountain range located at the western South American margin and is part of the Eastern- Circum-Pacific orogenic Belt. The ~7000 km long mountain range is one of the longest on Earth and hosts the second largest orogenic plateau in the world, the Altiplano-Puna plateau. The Andes are known as a non-collisional subduction-type orogen which developed as a result of the interaction between the subducted oceanic Nazca plate and the South American continental plate. The different Andean segments exhibit along-strike variations of morphotectonic provinces characterized by different elevations, volcanic activity, deformation styles, crustal thickness, shortening magnitude and oceanic plate geometry. Most of the present-day elevation can be explained by crustal shortening in the last ~50 Ma, with the shortening magnitude decreasing from ~300 km in the central (15°S-30°S) segment to less than half that in the southern part (30°S-40°S). Several factors were proposed that might control the magnitude and acceleration of shortening of the Central Andes in the last 15 Ma. One important factor is likely the slab geometry. At 27-33°S, the slab dips horizontally at ~100 km depth due to the subduction of the buoyant Juan Fernandez Ridge, forming the Pampean flat-slab. This horizontal subduction is thought to influence the thermo-mechanical state of the Sierras Pampeanas foreland, for instance, by strengthening the lithosphere and promoting the thick-skinned propagation of deformation to the east, resulting in the uplift of the Sierras Pampeanas basement blocks. The flat-slab has migrated southwards from the Altiplano latitude at ~30 Ma to its present-day position and the processes and consequences associated to its passage on the contemporaneous acceleration of the shortening rate in Central Andes remain unclear. Although the passage of the flat-slab could offer an explanation to the acceleration of the shortening, the timing does not explain the two pulses of shortening at about 15 Ma and 4 Ma that are suggested from geological observations. I hypothesize that deformation in the Central Andes is controlled by a complex interaction between the subduction dynamics of the Nazca plate and the dynamic strengthening and weakening of the South American plate due to several upper plate processes. To test this hypothesis, a detailed investigation into the role of the flat-slab, the structural inheritance of the continental plate, and the subduction dynamics in the Andes is needed. Therefore, I have built two classes of numerical thermo-mechanical models: (i) The first class of models are a series of generic E-W-oriented high-resolution 2D subduction models thatinclude flat subduction in order to investigate the role of the subduction dynamics on the temporal variability of the shortening rate in the Central Andes at Altiplano latitudes (~21°S). The shortening rate from the models was then validated with the observed tectonic shortening rate in the Central Andes. (ii) The second class of models are a series of 3D data-driven models of the present-day Pampean flat-slab configuration and the Sierras Pampeanas (26-42°S). The models aim to investigate the relative contribution of the present-day flat subduction and inherited structures in the continental lithosphere on the strain localization. Both model classes were built using the advanced finite element geodynamic code ASPECT. The first main finding of this work is to suggest that the temporal variability of shortening in the Central Andes is primarily controlled by the subduction dynamics of the Nazca plate while it penetrates into the mantle transition zone. These dynamics depends on the westward velocity of the South American plate that provides the main crustal shortening force to the Andes and forces the trench to retreat. When the subducting plate reaches the lower mantle, it buckles on it-self until the forced trench retreat causes the slab to steepen in the upper mantle in contrast with the classical slab-anchoring model. The steepening of the slab hinders the trench causing it to resist the advancing South American plate, resulting in the pulsatile shortening. This buckling and steepening subduction regime could have been initiated because of the overall decrease in the westwards velocity of the South American plate. In addition, the passage of the flat-slab is required to promote the shortening of the continental plate because flat subduction scrapes the mantle lithosphere, thus weakening the continental plate. This process contributes to the efficient shortening when the trench is hindered, followed by mantle lithosphere delamination at ~20 Ma. Finally, the underthrusting of the Brazilian cratonic shield beneath the orogen occurs at ~11 Ma due to the mechanical weakening of the thick sediments covered the shield margin, and due to the decreasing resistance of the weakened lithosphere of the orogen. The second main finding of this work is to suggest that the cold flat-slab strengthens the overriding continental lithosphere and prevents strain localization. Therefore, the deformation is transmitted to the eastern front of the flat-slab segment by the shear stress operating at the subduction interface, thus the flat-slab acts like an indenter that "bulldozes" the mantle-keel of the continental lithosphere. The offset in the propagation of deformation to the east between the flat and steeper slab segments in the south causes the formation of a transpressive dextral shear zone. Here, inherited faults of past tectonic events are reactivated and further localize the deformation in an en-echelon strike-slip shear zone, through a mechanism that I refer to as "flat-slab conveyor". Specifically, the shallowing of the flat-slab causes the lateral deformation, which explains the timing of multiple geological events preceding the arrival of the flat-slab at 33°S. These include the onset of the compression and of the transition between thin to thick-skinned deformation styles resulting from the crustal contraction of the crust in the Sierras Pampeanas some 10 and 6 Myr before the Juan Fernandez Ridge collision at that latitude, respectively.}, language = {en} } @phdthesis{Gruner2023, author = {Gruner, David}, title = {New frontiers in gyrochronology}, doi = {10.25932/publishup-61526}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-615268}, school = {Universit{\"a}t Potsdam}, pages = {x, 131}, year = {2023}, abstract = {Late-type stars are by far the most frequent stars in the universe and of fundamental interest to various fields of astronomy - most notably to Galactic archaeology and exoplanet research. However, such stars barely change during their main sequence lifetime; their temperature, luminosity, or chemical composition evolve only very slowly over the course of billions of years. As such, it is difficult to obtain the age of such a star, especially when it is isolated and no other indications (like cluster association) can be used. Gyrochronology offers a way to overcome this problem. Stars, just like all other objects in the universe, rotate and the rate at which stars rotate impacts many aspects of their appearance and evolution. Gyrochronology leverages the observed rotation rate of a late-type main sequence star and its systematic evolution to estimate their ages. Unlike the above-mentioned parameters, the rotation rate of a main sequence star changes drastically throughout its main sequence lifetime; stars spin down. The youngest stars rotate every few hours, whereas much older stars rotate only about once a month, or - in the case of some late M-stars - once in a hundred days. Given that this spindown is systematic (with an additional mass dependence), it gave rise to the idea of using the observed rotation rate of a star (and its mass or a suitable proxy thereof) to estimate a star's age. This has been explored widely in young stellar open clusters but remains essentially unconstrained for stars older than the sun, and K and M stars older than 1 Gyr. This thesis focuses on the continued exploration of the spindown behavior to assess, whether gyrochronology remains applicable for stars of old ages, whether it is universal for late-type main sequence stars (including field stars), and to provide calibration mileposts for spindown models. To accomplish this, I have analyzed data from Kepler space telescope for the open clusters Ruprecht 147 (2.7 Gyr old) and M 67 (4 Gyr). Time series photometry data (light curves) were obtained for both clusters during Kepler's K2 mission. However, due to technical limitations and telescope malfunctions, extracting usable data from the K2 mission to identify (especially long) rotation periods requires extensive data preparation. For Ruprecht 147, I have compiled a list of about 300 cluster members from the literature and adopted preprocessed light curves from the Kepler archive where available. They have been cleaned of the gravest of data artifacts but still contained systematics. After correcting them for said artifacts, I was able to identify rotation periods in 31 of them. For M 67 more effort was taken. My work on Ruprecht 147 has shown the limitations imposed by the preselection of Kepler targets. Therefore, I adopted the time series full frame image directly and performed photometry on a much higher spatial resolution to be able to obtain data for as many stars as possible. This also means that I had to deal with the ubiquitous artifacts in Kepler data. For that, I devised a method that correlates the artificial flux variations with the ongoing drift of the telescope pointing in order to remove it. This process was a large success and I was able to create light curves whose quality match and even exceede those that were created by the Kepler mission - all while operating on higher spatial resolution and processing fainter stars. Ultimately, I was able to identify signs of periodic variability in the (created) light curves for 31 and 47 stars in Ruprecht 147 and M 67, respectively. My data connect well to bluer stars of cluster of the same age and extend for the first time to stars redder than early-K and older than 1 Gyr. The cluster data show a clear flattening in the distribution of Ruprecht 147 and even a downturn for M 67, resulting in a somewhat sinusoidal shape. With that, I have shown that the systematic spindown of stars continues at least until 4 Gyr and stars continue to live on a single surface in age-rotation periods-mass space which allows gyrochronology to be used at least up to that age. However, the shape of the spindown - as exemplified by the newly discovered sinusoidal shape of the cluster sequence - deviates strongly from the expectations. I then compiled an extensive sample of rotation data in open clusters - very much including my own work - and used the resulting cluster skeleton (with each cluster forming a rip in color-rotation period-mass space) to investigate if field stars follow the same spindown as cluster stars. For the field stars, I used wide binaries, which - with their shared origin and coevality - are in a sense the smallest possible open clusters. I devised an empirical method to evaluate the consistency between the rotation rates of the wide binary components and found that the vast majority of them are in fact consistent with what is observed in open clusters. This leads me to conclude that gyrochronology - calibrated on open clusters - can be applied to determine the ages of field stars.}, language = {en} } @misc{TanDueringWildeetal.2023, author = {Tan, Sarah and D{\"u}ring, Sarah and Wilde, Alina and Hamburger, Lara and Fritzsche, Tom and Felsing, Ulrike and Lauer, Norina and Corsten, Sabine and Ostermann, Frank and Nonn, Kerstin and Nerz, Verena and Neumann, Sandra and Zauke, Svenja and Sandrieser, Patricia and Steinberg, Romy Simone and Thurmann, Anika and D{\"o}rr, Fiona and Bilda, Kerstin and Kluth, Alicia and Lemire-Tremblay, Marilyne and Jamey, Kevin and Dalla Bella, Simone and Falk, Simone and Kleing{\"u}nther, Constanze and Gabler, Katrin and Elligsen, Chiara and Weiland, Katharina and Wiehe, Lea and Wahl, Michael and Binczyk, Sarah and Staebel, Cornelia and Jung, Stefanie and Eikerling, Maren and Czok, Clara and Sallat, Stephan and Collasius, Valerie and Grahovac, Tena}, title = {Spektrum Patholinguistik Band 16. Schwerpunktthema: Schnittstelle Alltag: Transfer und Teilhabe in der Sprachtherapie}, number = {16}, editor = {Tan, Sarah and D{\"u}ring, Sarah and Wilde, Alina and Hamburger, Lara and Fritzsche, Tom}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-559-0}, issn = {1866-9433}, doi = {10.25932/publishup-59043}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-590433}, pages = {viii, 234}, year = {2023}, abstract = {Das 16. Herbsttreffen Patholinguistik mit dem Schwerpunktthema »Schnittstelle Alltag: Transfer und Teilhabe in der Sprachtherapie« fand am 19.11.2022 als Online-Veranstaltung statt. Das Herbsttreffen wird seit 2007 j{\"a}hrlich vom Verband f{\"u}r Patholinguistik e.V. (vpl), seit 2021 vom Deutschen Bundesverband f{\"u}r akademische Sprachtherapie und Logop{\"a}die (dbs) in Kooperation mit der Universit{\"a}t Potsdam durchgef{\"u}hrt. Der vorliegende Tagungsband beinhaltet die Vortr{\"a}ge zum Schwerpunktthema sowie die Posterpr{\"a}sentationen zu weiteren Themen aus der sprachtherapeutischen Forschung und Praxis.}, language = {de} } @phdthesis{Metz2023, author = {Metz, Malte}, title = {Finite fault earthquake source inversions}, doi = {10.25932/publishup-61974}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-619745}, school = {Universit{\"a}t Potsdam}, pages = {143}, year = {2023}, abstract = {Earthquake modeling is the key to a profound understanding of a rupture. Its kinematics or dynamics are derived from advanced rupture models that allow, for example, to reconstruct the direction and velocity of the rupture front or the evolving slip distribution behind the rupture front. Such models are often parameterized by a lattice of interacting sub-faults with many degrees of freedom, where, for example, the time history of the slip and rake on each sub-fault are inverted. To avoid overfitting or other numerical instabilities during a finite-fault estimation, most models are stabilized by geometric rather than physical constraints such as smoothing. As a basis for the inversion approach of this study, we build on a new pseudo-dynamic rupture model (PDR) with only a few free parameters and a simple geometry as a physics-based solution of an earthquake rupture. The PDR derives the instantaneous slip from a given stress drop on the fault plane, with boundary conditions on the developing crack surface guaranteed at all times via a boundary element approach. As a side product, the source time function on each point on the rupture plane is not constraint and develops by itself without additional parametrization. The code was made publicly available as part of the Pyrocko and Grond Python packages. The approach was compared with conventional modeling for different earthquakes. For example, for the Mw 7.1 2016 Kumamoto, Japan, earthquake, the effects of geometric changes in the rupture surface on the slip and slip rate distributions could be reproduced by simply projecting stress vectors. For the Mw 7.5 2018 Palu, Indonesia, strike-slip earthquake, we also modelled rupture propagation using the 2D Eikonal equation and assuming a linear relationship between rupture and shear wave velocity. This allowed us to give a deeper and faster propagating rupture front and the resulting upward refraction as a new possible explanation for the apparent supershear observed at the Earth's surface. The thesis investigates three aspects of earthquake inversion using PDR: (1) to test whether implementing a simplified rupture model with few parameters into a probabilistic Bayesian scheme without constraining geometric parameters is feasible, and whether this leads to fast and robust results that can be used for subsequent fast information systems (e.g., ground motion predictions). (2) To investigate whether combining broadband and strong-motion seismic records together with near-field ground deformation data improves the reliability of estimated rupture models in a Bayesian inversion. (3) To investigate whether a complex rupture can be represented by the inversion of multiple PDR sources and for what type of earthquakes this is recommended. I developed the PDR inversion approach and applied the joint data inversions to two seismic sequences in different tectonic settings. Using multiple frequency bands and a multiple source inversion approach, I captured the multi-modal behaviour of the Mw 8.2 2021 South Sandwich subduction earthquake with a large, curved and slow rupturing shallow earthquake bounded by two faster and deeper smaller events. I could cross-validate the results with other methods, i.e., P-wave energy back-projection, a clustering analysis of aftershocks and a simple tsunami forward model. The joint analysis of ground deformation and seismic data within a multiple source inversion also shed light on an earthquake triplet, which occurred in July 2022 in SE Iran. From the inversion and aftershock relocalization, I found indications for a vertical separation between the shallower mainshocks within the sedimentary cover and deeper aftershocks at the sediment-basement interface. The vertical offset could be caused by the ductile response of the evident salt layer to stress perturbations from the mainshocks. The applications highlight the versatility of the simple PDR in probabilistic seismic source inversion capturing features of rather different, complex earthquakes. Limitations, as the evident focus on the major slip patches of the rupture are discussed as well as differences to other finite fault modeling methods.}, language = {en} } @phdthesis{Djalali2023, author = {Djalali, Saveh Arman}, title = {Multiresponsive complex emulsions: Concepts for the design of active and adaptive liquid colloidal systems}, doi = {10.25932/publishup-57520}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-575203}, school = {Universit{\"a}t Potsdam}, pages = {151}, year = {2023}, abstract = {Complex emulsions are dispersions of kinetically stabilized multiphasic emulsion droplets comprised of two or more immiscible liquids that provide a novel material platform for the generation of active and dynamic soft materials. In recent years, the intrinsic reconfigurable morphological behavior of complex emulsions, which can be attributed to the unique force equilibrium between the interfacial tensions acting at the various interfaces, has become of fundamental and applied interest. As such, particularly biphasic Janus droplets have been investigated as structural templates for the generation of anisotropic precision objects, dynamic optical elements or as transducers and signal amplifiers in chemo- and bio-sensing applications. In the present thesis, switchable internal morphological responses of complex droplets triggered by stimuli-induced alterations of the balance of interfacial tensions have been explored as a universal building block for the design of multiresponsive, active, and adaptive liquid colloidal systems. A series of underlying principles and mechanisms that influence the equilibrium of interfacial tensions have been uncovered, which allowed the targeted design of emulsion bodies that can alter their shape, bind and roll on surfaces, or change their geometrical shape in response to chemical stimuli. Consequently, combinations of the unique triggerable behavior of Janus droplets with designer surfactants, such as a stimuli-responsive photosurfactant (AzoTAB) resulted for instance in shape-changing soft colloids that exhibited a jellyfish inspired buoyant motion behavior, holding great promise for the design of biological inspired active material architectures and transformable soft robotics. In situ observations of spherical Janus emulsion droplets using a customized side-view microscopic imaging setup with accompanying pendant dropt measurements disclosed the sensitivity regime of the unique chemical-morphological coupling inside complex emulsions and enabled the recording of calibration curves for the extraction of critical parameters of surfactant effectiveness. The deduced new "responsive drop" method permitted a convenient and cost-efficient quantification and comparison of the critical micelle concentrations (CMCs) and effectiveness of various cationic, anionic, and nonionic surfactants. Moreover, the method allowed insightful characterization of stimuli-responsive surfactants and monitoring of the impact of inorganic salts on the CMC and surfactant effectiveness of ionic and nonionic surfactants. Droplet functionalization with synthetic crown ether surfactants yielded a synthetically minimal material platform capable of autonomous and reversible adaptation to its chemical environment through different supramolecular host-guest recognition events. Addition of metal or ammonium salts resulted in the uptake of the resulting hydrophobic complexes to the hydrocarbon hemisphere, whereas addition of hydrophilic ammonium compounds such as amino acids or polypeptides resulted in supramolecular assemblies at the hydrocarbon-water interface of the droplets. The multiresponsive material platform enabled interfacial complexation and thus triggered responses of the droplets to a variety of chemical triggers including metal ions, ammonium compounds, amino acids, antibodies, carbohydrates as well as amino-functionalized solid surfaces. In the final chapter, the first documented optical logic gates and combinatorial logic circuits based on complex emulsions are presented. More specifically, the unique reconfigurable and multiresponsive properties of complex emulsions were exploited to realize droplet-based logic gates of varying complexity using different stimuli-responsive surfactants in combination with diverse readout methods. In summary, different designs for multiresponsive, active, and adaptive liquid colloidal systems were presented and investigated, enabling the design of novel transformative chemo-intelligent soft material platforms.}, language = {en} } @phdthesis{Kim2023, author = {Kim, Jiyong}, title = {Synthesis of InP quantum dots and their applications}, doi = {10.25932/publishup-58535}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585351}, school = {Universit{\"a}t Potsdam}, pages = {XIX, 142}, year = {2023}, abstract = {Technologically important, environmentally friendly InP quantum dots (QDs) typically used as green and red emitters in display devices can achieve exceptional photoluminescence quantum yields (PL QYs) of near-unity (95-100\%) when the-state-of-the-art core/shell heterostructure of the ZnSe inner/ZnS outer shell is elaborately applied. Nevertheless, it has only led to a few industrial applications as QD liquid crystal display (QD-LCD) which is applied to blue backlight units, even though QDs has a lot of possibilities that able to realize industrially feasible applications, such as QD light-emitting diodes (QD‒LEDs) and luminescence solar concentrator (LSC), due to their functionalizable characteristics. Before introducing the main research, the theoretical basis and fundamentals of QDs are described in detail on the basis of the quantum mechanics and experimental synthetic results, where a concept of QD and colloidal QD, a type-I core/shell structure, a transition metal doped semiconductor QDs, the surface chemistry of QD, and their applications (LSC, QD‒LEDs, and EHD jet printing) are sequentially elucidated for better understanding. This doctoral thesis mainly focused on the connectivity between QD materials and QD devices, based on the synthesis of InP QDs that are composed of inorganic core (core/shell heterostructure) and organic shell (surface ligands on the QD surface). In particular, as for the former one (core/shell heterostructure), the ZnCuInS mid-shell as an intermediate layer is newly introduced between a Cu-doped InP core and a ZnS shell for LSC devices. As for the latter one (surface ligands), the ligand effect by 1-octanethiol and chloride ion are investigated for the device stability in QD‒LEDs and the printability of electro-hydrodynamic (EHD) jet printing system, in which this research explores the behavior of surface ligands, based on proton transfer mechanism on the QD surface. Chapter 3 demonstrates the synthesis of strain-engineered highly emissive Cu:InP/Zn-Cu-In-S (ZCIS)/ZnS core/shell/shell heterostructure QDs via a one-pot approach. When this unconventional combination of a ZCIS/ZnS double shelling scheme is introduced to a series of Cu:InP cores with different sizes, the resulting Cu:InP/ZCIS/ZnS QDs with a tunable near-IR PL range of 694-850 nm yield the highest-ever PL QYs of 71.5-82.4\%. These outcomes strongly point to the efficacy of the ZCIS interlayer, which makes the core/shell interfacial strain effectively alleviated, toward high emissivity. The presence of such an intermediate ZCIS layer is further examined by comparative size, structural, and compositional analyses. The end of this chapter briefly introduces the research related to the LSC devices, fabricated from Cu:InP/ZCIS/ZnS QDs, currently in progress. Chapter 4 mainly deals with ligand effect in 1-octanethiol passivation of InP/ZnSe/ZnS QDs in terms of incomplete surface passivation during synthesis. This chapter demonstrates the lack of anionic carboxylate ligands on the surface of InP/ZnSe/ZnS quantum dots (QDs), where zinc carboxylate ligands can be converted to carboxylic acid or carboxylate ligands via proton transfer by 1-octanethiol. The as-synthesized QDs initially have an under-coordinated vacancy surface, which is passivated by solvent ligands such as ethanol and acetone. Upon exposure of 1-octanethiol to the QD surface, 1-octanthiol effectively induces the surface binding of anionic carboxylate ligands (derived from zinc carboxylate ligands) by proton transfer, which consequently exchanges ethanol and acetone ligands that bound on the incomplete QD surface. The systematic chemical analyses, such as thermogravimetric analysis‒mass spectrometry and proton nuclear magnetic resonance spectroscopy, directly show the interplay of surface ligands, and it associates with QD light-emitting diodes (QD‒LEDs). Chapter 5 shows the relation between material stability of QDs and device stability of QD‒LEDs through the investigation of surface chemistry and shell thickness. In typical III-V colloidal InP quantum dots (QDs), an inorganic ZnS outermost shell is used to provide stability when overcoated onto the InP core. However, this work presents a faster photo-degradation of InP/ZnSe/ZnS QDs with a thicker ZnS shell than that with a thin ZnS shell when 1-octanethiol was applied as a sulfur source to form ZnS outmost shell. Herein, 1-octanethiol induces the form of weakly-bound carboxylate ligand via proton transfer on the QD surface, resulting in a faster degradation at UV light even though a thicker ZnS shell was formed onto InP/ZnSe QDs. Detailed insight into surface chemistry was obtained from proton nuclear magnetic resonance spectroscopy and thermogravimetric analysis-mass spectrometry. However, the lifetimes of the electroluminescence devices fabricated from InP/ZnSe/ZnS QDs with a thick or a thin ZnS shell show surprisingly the opposite result to the material stability of QDs, where the QD light-emitting diodes (QD‒LEDs) with a thick ZnS shelled QDs maintained its luminance more stable than that with a thin ZnS shelled QDs. This study elucidates the degradation mechanism of the QDs and the QD light-emitting diodes based on the results and discuss why the material stability of QDs is different from the lifetime of QD‒LEDs. Chapter 6 suggests a method how to improve a printability of EHD jet printing when QD materials are applied to QD ink formulation, where this work introduces the application of GaP mid-shelled InP QDs as a role of surface charge in EHD jet printing technique. In general, GaP intermediate shell has been introduced in III-V colloidal InP quantum dots (QDs) to enhance their thermal stability and quantum efficiency in the case of type-I core/shell/shell heterostructure InP/GaP/ZnSeS QDs. Herein, these highly luminescent InP/GaP/ZnSeS QDs were synthesized and applied to EHD jet printing, by which this study demonstrates that unreacted Ga and Cl ions on the QD surface induce the operating voltage of cone jet and cone jet formation to be reduced and stabilized, respectively. This result indicates GaP intermediate shell not only improves PL QY and thermal stability of InP QDs but also adjusts the critical flow rate required for cone-jet formation. In other words, surface charges of quantum dots can have a significant role in forming cone apex in the EHD capillary nozzle. For an industrially convenient validation of surface charges on the QD surface, Zeta potential analyses of QD solutions as a simple method were performed, as well as inductively coupled plasma optical emission spectrometry (ICP-OES) for a composition of elements. Beyond the generation of highly emissive InP QDs with narrow FWHM, these studies talk about the connection between QD material and QD devices not only to make it a vital jumping-off point for industrially feasible applications but also to reveal from chemical and physical standpoints the origin that obstructs the improvement of device performance experimentally and theoretically.}, language = {en} } @phdthesis{Lepre2023, author = {Lepre, Enrico}, title = {Nitrogen-doped carbonaceous materials for energy and catalysis}, doi = {10.25932/publishup-57739}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-577390}, school = {Universit{\"a}t Potsdam}, pages = {153}, year = {2023}, abstract = {Facing the environmental crisis, new technologies are needed to sustain our society. In this context, this thesis aims to describe the properties and applications of carbon-based sustainable materials. In particular, it reports the synthesis and characterization of a wide set of porous carbonaceous materials with high nitrogen content obtained from nucleobases. These materials are used as cathodes for Li-ion capacitors, and a major focus is put on the cathode preparation, highlighting the oxidation resistance of nucleobase-derived materials. Furthermore, their catalytic properties for acid/base and redox reactions are described, pointing to the role of nitrogen speciation on their surfaces. Finally, these materials are used as supports for highly dispersed nickel loading, activating the materials for carbon dioxide electroreduction.}, language = {en} } @phdthesis{Schneider2023, author = {Schneider, Helen}, title = {Reactive eutectic media based on ammonium formate for the valorization of bio-sourced materials}, doi = {10.25932/publishup-61302}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-613024}, school = {Universit{\"a}t Potsdam}, pages = {137}, year = {2023}, abstract = {In the last several decades eutectic mixtures of different compositions were successfully used as solvents for vast amount of chemical processes, and only relatively recently they were discovered to be widely spread in nature. As such they are discussed as a third liquid media of the living cell, that is composed of common cell metabolites. Such media may also incorporate water as a eutectic component in order to regulate properties such as enzyme activity or viscosity. Taking inspiration form such sophisticated use of eutectic mixtures, this thesis will explore the use of reactive eutectic media (REM) for organic synthesis. Such unconventional media are characterized by the reactivity of their components, which means that mixture may assume the role of the solvent as well as the reactant itself. The thesis focuses on novel REM based on ammonium formate and investigates their potential for the valorization of bio-sourced materials. The use of REM allows the performance of a number of solvent-free reactions, which entails the benefits of a superior atom and energy economy, higher yields and faster rates compared to reactions in solution. This is evident for the Maillard reaction between ammonium formate and various monosaccharides for the synthesis of substituted pyrazines as well as for a Leuckart type reaction between ammonium formate and levulinic acid for the synthesis of 5-methyl-2-pyrrolidone. Furthermore, reaction of ammonium formate with citric acid for the synthesis of yet undiscovered fluorophores, shows that synthesis in REM can open up unexpected reaction pathways. Another focus of the thesis is the study of water as a third component in the REM. As a result, the concept of two different dilution regimes (tertiary REM and in REM in solvent) appears useful for understanding the influence of water. It is shown that small amounts of water can be of great benefit for the reaction, by reducing viscosity and at the same time increasing reaction yields. REM based on ammonium formate and organic acids are employed for lignocellulosic biomass treatment. The thesis thereby introduces an alternative approach towards lignocellulosic biomass fractionation that promises a considerable process intensification by the simultaneous generation of cellulose and lignin as well as the production of value-added chemicals from REM components. The thesis investigates the generated cellulose and the pathway to nanocellulose generation and also includes the structural analysis of extracted lignin. Finally, the thesis investigates the potential of microwave heating to run chemical reactions in REM and describes the synergy between these two approaches. Microwave heating for chemical reactions and the use of eutectic mixtures as alternative reaction media are two research fields that are often described in the scope of green chemistry. The thesis will therefore also contain a closer inspection of this terminology and its greater goal of sustainability.}, language = {en} } @phdthesis{Stoermann2023, author = {St{\"o}rmann, Florian Konstantin}, title = {Multifunctional Microballoons for the active and passive control of fluid-flows}, school = {Universit{\"a}t Potsdam}, pages = {XVI, 104, A24}, year = {2023}, abstract = {Functional materials, also called "Smart Materials", are described by their ability to fulfill a desired task through targeted interaction with its environment. Due to this functional integration, such materials are of increased interest, especially in areas where the increasing micronization of components is required. Modern manufacturing processes (e.g. microfluidics) and the availability of a wide variety of functional materials (e.g. shape memory materials) now enable the production of particle-based switching components. This category includes micropumps and microvalves, whose basic function is the active control of liquid flows. One approach in realizing those microcomponents as pursued by this work, enables variable size-switching of water-filled microballoons by implementing a stimulus-sensitive switching motif in the capsule's membrane shell, while being under the influence of a constant driving force. The switching motif with its gatekeeper function has a critical influence on one or more material parameters, which modulate the capsule's resistance against the driving force in microballoon expansion process. The advantage of this concept is that even non-variable analyte conditions, such as concentration levels of ions, can be capitalized to generate external force fields that, under the control of the membrane, cause an inflation of the microballoon by an osmotically driven water influx. In case of osmotic pressure gradients as the driving force for the capsule expansion, material parameters associated with the gatekeeper function are specifically the permeability and the mechanical stiffness of the shell material. While a modulation of the shell permeability could be utilized to kinetically impede the water influx on large time scales, a modulation of the shell's mechanical stiffness even might be utilized to completely prevent the capsule inflation due to a possible non-deformability beneath a certain threshold pressure. In polymer networks, which are a suitable material class for the demanded capsule shell because of their excellent elasticity, both the permeability and the mechanical properties are strongly influenced by the crystallinity of the material. Since the permeability is effectively reduced with increasing crystallinity, while the mechanical stiffness is simultaneously greatly increased, both effects point in the same direction in terms of their functional relationship. For this reason and due to a reversible and contactless modulation of the membrane crystallinity by heat input, crystallites may be suitable switching motifs for controlling the capsule expansion. As second design element of reversible expandable microballoons, the capsule geometry, defined by an aqueous core enveloped by the temperature-sensitive polymer network membrane, should allow an osmotic pressure gradient across the membrane layer. The strength of the inflation pressure and the associated inflation velocity upon membrane melting should be controlled by the salt concentration within the aqueous core, while a turn in the osmotic gradient should furthermore allow the reversible process of capsule deflation. Therefore, it should be possible to build either microvalves and micropumps, while their intended action of either pumping or valving is determined by their state of expansion and the direction of the osmotic pressure gradient.. Microballoons of approximately 300 µm in diameter were formed via droplet-based microfluidics from double-emulsion templates (w/o/w). The elastomeric capsule membrane was formed by photo-crosslinking of methacrylate (MA) functionalized oligo(ε-caprolactone) precursors (≈ 3.8 MA-arms, Mn ≈ 12000 g mol-1) within the organic medium layer (o) via UV-exposure after droplet-formation. After removal of the toluene/chloroform mixture by slow extraction via the continuous aqueous phase, the capsules solidified under the development of a characteristic "mushroom"-like shape at specific experimental conditions (e.g. λ = 308 nm, 57 mJ·s-1·cm-2, 16 min). It could be furthermore shown that in dependency to the process parameters: oligomer concentration and curing-time also spherical capsules were accessible. Long curing-times and high oligomer concentrations at a fixed light-intensity favored the formation of "mushroom"-like capsules, whereas the contrary led to spherical shaped capsules. A comparative study on thin polymer network films of same composition and equal treatment proved a correlation between the film's crosslink density and their contraction capability, while stronger crosslinked polymer networks showed a stronger contraction after solvent removal. In combination with observations during capsule solidification via light-microscopy, where a continuous shaping from almost spherical crosslinked templates to "mushroom"-shaped and solidified capsules was stated, the following mechanism was proposed. In case of low oligomer contents and short curing-times, the contraction of the capsule shell during solvent removal is strongly diminished due to a low degree of crosslinking. Therefore, the solidifying shell could freely collapse onto the aqueous core. In the other case, high oligomer concentrations and long curing-times will favor the formation of highly crosslinked capsule membranes with a strong contraction capability. Due to an observed decentered location of the aqueous core within the swollen polymer network, an uneven radial stress along the capsule's circumference is exerted to the incompressible core. This lead to an uneven contraction during solvent removal and a directed flow of the core fluid into the direction of the minimal stress vector. In consequence, the initially thicker spherical cap contracts, whereas the opposing thinner spherical cap get stretched. The "mushroom"-shape over some advantages over their spherical shaped counterparts, why they were selected for the further experiments. Besides the necessity of a high density of crosslinking for the purpose of extraordinary elasticity and toughness, the form-anisotropy promotes a faster microballoon expandability due to a partial reduction of the membrane thickness. Additionally, pre-stretched regions of thin thickness might provide a better resistance against inflation pressure than spherical but non-stretched capsules of equal membrane thickness. The resulting "mushroom"-shaped microcapsules exhibited a melting point of Tm ≈ 50 - 60 °C and a degree of crystallinity of Xc ≈ 29 - 38 \% depending on the membrane thickness and internal salt content, which is slightly lower than for the non-crosslinked oligomer and reasoned by a limited chain mobility upon crosslinking. Nonetheless, the melting transition of the polymer network was associated with a strong drop in its mechanical stiffness, which was shown to have a strong influence on the osmotic driven expansion of the microcapsules. Capsules that were subjected to osmotic pressures between 1.5 and 4.7 MPa did not expand if the temperature was well below the melting point of the capsule's membrane, i.e. at room temperature. In contrast, a continuous expansion, while approaching asymptotically to a final capsule size, was observed if the temperature exceeded the melting point, i.e. 60 °C. Microballoons, which were kept for 56 days at ∆Π = 1.5 MPa and room temperature, did not change significantly in diameter, why the impact of the mechanical stiffness on the expansion behavior is considered to be the greater than the influence of the shell permeability. The time-resolved expansion behavior of the microballoons above their Tm was subsequently modeled, using difusion equations that were corrected for shape anisotropy and elastic restoring forces. A shape-related and expansion dependent pre-factor was used to dynamically address the influence of the shell thickness differences along the circumference on the inflation velocity, whereas the microballoon's elastic contraction upon inflation was rendered by the inclusion of a hyperelastic constitutive model. An important finding resulting from this model was the pronounced increase in inflation velocity compared to hypothetical capsules with a homogeneous shell thickness, which stresses the benefit of employing shape anisotropic balloon-like capsules in this study. Furthermore, the model was able to predict the finite expandability on basis of entropy-elastic recovery forces and strain-hardening effects. A comparison of six different microballoons with different shell thicknesses and internal salt contents showed the linear relationship between the volumetric expansion, the shell thickness and the applied osmotic pressure, as represented by the model. As the proposed model facilitates the prediction of the expansion kinetics depending on the membranes mechanical and diffusional characteristics, it might be a screening tool for future material selections. In course of the microballoon expansion process, capsules of intermediate diameters could be isolated by recrystallization of the membrane, which is mainly caused by a restoration of the membrane's mechanical stiffness and is otherwise difficult to achieve with other stimuli-sensitive systems. The capsule's crystallinity of intermediate expansion states was nearly unchanged, whereas the lamellar crystal size tends to decreased with the expansion ratio. Therefore, it was assumed that the elastic modulus was only minimally altered and might increased due to the networks segment-chain extension. In addition to the volume increase achieved by inflation, a turn in the osmotic gradient also facilitated the reversible deflation, which was shown in inflation/deflation cycles. These both characteristics of the introduced microballoons are important parameter regarding the realization of micropumps and microvalves. The fixation of expanded microcapsules via recrystallization enabled the storage of entropy-elastic strain-energy, which could be utilized for pumping actions in non-aqueous media. Here, the pumping velocity depended on both, the type of surrounding medium and the applied temperature. Surrounding media that supported the fast transport of pumped liquid showed an accelerated deflation, while high temperatures further accelerate the pumping velocity. Very fast rejection of the incorporated payload was furthermore realized with pierced expanded microballoons, which were subjected to temperatures above their Tm. The possible fixation of intermediate particle sizes provide opportunities for vent constructions that allowed the precise adjustment of specific flow-rates and multiple valve openings and closings. A valve construction was realized by the insertion of a single or multiple microballoons in a microfluidic channel. A complete and a partial closing of the microballoon-valves was demonstrated as a function of the heating period. In this context, a difference between the inflation and deflation velocity was stated, summarizing slower expansion kinetics. Overall, microballoons, which presented both on-demand pumping and reversible valving by a temperature-triggered change in the capsule's volume, might be suitable components that help to design fully integrated LOC devices, due to the implementation of the control switch and controllable inflation/deflation kinetics. In comparison to other state of the art stimuli-sensitive materials, one has to highlight the microballoons capability of stabilizing almost continuously intermediate capsule sizes by simple recrystallization of the microballoon's membrane.}, language = {en} } @article{BinderMettenberger2023, author = {Binder, Julia and Mettenberger, Tobias}, title = {Schl{\"u}sselfiguren in l{\"a}ndlichen Netzwerken}, series = {KWI-Schriften}, journal = {KWI-Schriften}, number = {14}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-571-2}, issn = {1867-951X}, doi = {10.25932/publishup-63113}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-631133}, pages = {39 -- 50}, year = {2023}, language = {de} } @article{BembnistaMettenbergerZscherneck2023, author = {Bembnista, Kamil and Mettenberger, Tobias and Zscherneck, Julia}, title = {Soziale Netzwerke als Ressourcenzug{\"a}nge f{\"u}r Digitale Pioniere}, series = {KWI-Schriften}, journal = {KWI-Schriften}, number = {14}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-571-2}, issn = {1867-951X}, doi = {10.25932/publishup-63115}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-631156}, pages = {51 -- 72}, year = {2023}, language = {de} } @article{UlrichZeissigWitting2023, author = {Ulrich, Peter and Zeißig, Hanna and Witting, Antje}, title = {Handlungsempfehlungen f{\"u}r die lokale Governance und {\"U}bertragbarkeit auf Brandenburg}, series = {KWI-Schriften}, journal = {KWI-Schriften}, number = {14}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-571-2}, issn = {1867-951X}, doi = {10.25932/publishup-63118}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-631182}, pages = {101 -- 124}, year = {2023}, language = {de} } @article{StudemundHalevy2023, author = {Studemund-Hal{\´e}vy, Michael}, title = {Desperados at Sea}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien e.V.}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien e.V.}, number = {28}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-552-1}, issn = {1614-6492}, doi = {10.25932/publishup-58579}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585796}, pages = {100 -- 115}, year = {2023}, abstract = {Pirates are fortune-seeking fighters at sea. Their exploits fire the imaginations of their victims and admirers, drawing a veil over individuals who rarely bear a real name and pursue their adventurous occupations as buccaneers, filibusters, freebooters, privateers, pirates, or corsairs. Piracy, corsairing, and contraband trade were epidemic among the Egyptians and the Phoenicians, the Greeks and the Vikings, the Spaniards and the Ottomans, the Muslims, and the Christians. And the Jews.}, language = {en} } @article{Weinhold2023, author = {Weinhold, Beate}, title = {Einblicke in j{\"u}dische Religionspraxis in Franken um 1800}, series = {Genisa-Bl{\"a}tter IV}, journal = {Genisa-Bl{\"a}tter IV}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-539-2}, doi = {10.25932/publishup-58492}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-584922}, pages = {105 -- 126}, year = {2023}, language = {de} } @article{Schloer2023, author = {Schl{\"o}r, Joachim}, title = {"Israel am Meere"}, series = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, journal = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, number = {28}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-552-1}, issn = {1614-6492}, doi = {10.25932/publishup-58553}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585537}, pages = {18 -- 32}, year = {2023}, abstract = {For Jews in Germany, the period following the Nazis' rise to power in January 1933 was a period of decision-making on many levels: How should they respond to the persecution? If they decided to emigrate, many more decisions had to be made: How does one leave a country, and where should one go? A key moment in the process and in the cultural practice of emigration is the beginning of the sea voyage - when the need for departure and the hope for a new arrival jointly create a period of liminality. Looking at reports from sea voyages of exploration and emigration from the 1930s, this contribution discusses the question whether, and in what ways, such reflections can be read in the context of religious experiences and in the search for Jewish identities in times of turmoil.}, language = {en} } @article{Martini2023, author = {Martini, Annett}, title = {Die Buchstabenkr{\"o}nchen als Erinnerungsanker der Josefsgeschichte}, series = {Genisa-Bl{\"a}tter IV}, journal = {Genisa-Bl{\"a}tter IV}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-539-2}, doi = {10.25932/publishup-58487}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-584878}, pages = {43 -- 60}, year = {2023}, language = {de} } @article{Siegel2023, author = {Siegel, Bj{\"o}rn}, title = {"Creating a Maritime Future"}, series = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, journal = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, number = {28}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-552-1}, issn = {1614-6492}, doi = {10.25932/publishup-58557}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585575}, pages = {68 -- 82}, year = {2023}, abstract = {This article explores the importance of the port city of Hamburg in the evolving discourses on the creation of a maritime future, a vision which became influential in the 1930s, 1940s and 1950s. While some Jewish representatives in the city aimed at preserving and intertwining Hanseatic and Jewish traditions in order to secure a Jewish presence in the port city under the pressure of the Nazi regime and thereafter, others wanted to create new emigration opportunities, especially to Mandatory Palestine, and create a Jewish maritime future in Eretz Israel. Different Zionist organizations supported the newly evolving maritime ideas, such as the "conquest of the sea", and promoted the image of a Jewish seafaring nation. Despite the difficulties in the 1940s, these concepts gained influence post-1945 and led to the foundation of the fishery kibbutz "Zerubavel" in Blankenese/Hamburg. However, the idea of a Hanseatic Jewish future also remained influential and illustrates how differently a "Jewish maritime future" was imagined and used to link past, present and future.}, language = {en} } @article{Wassner2023, author = {Wassner, Dalia}, title = {The Port Jew and Nuestra Am{\´e}rica}, series = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, journal = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, number = {28}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-552-1}, issn = {1614-6492}, doi = {10.25932/publishup-58558}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585580}, pages = {84 -- 99}, year = {2023}, abstract = {Jacob Brandon Maduro's Memoirs and Related Observations (Havana, 1953) speak to the lasting yet malleable legacy of Jewish Caribbean/Atlantic mercantile communities that defined early modern settlement in the Americas. A close reading of the Memoirs, alongside relevant archival records and community narratives, lends new perspectives to scholarship on Port Jewries and the Atlantic Diaspora. Specifically concerned with Jacob's adoption of such leading intellectual and political tropes as the Monroe doctrine, Jos{\´e} Mart{\´i}'s Nuestra America, and a Zionism that evolved from an ideology to a reality, the Memoirs reveal a narrative at once defined by the tremendous upheavals of the first half of the 20th century, and an enduring sense of Jewish diasporic peoplehood defined through a Port Jew paradigm whereby the preservation of Jewish ethnicity is understood as synonymous with the championing of modernity.}, language = {en} } @article{Stellmacher2023, author = {Stellmacher, Martha}, title = {Abgelegte Musik}, series = {Genisa-Bl{\"a}tter IV}, journal = {Genisa-Bl{\"a}tter IV}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-539-2}, doi = {10.25932/publishup-58490}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-584908}, pages = {83 -- 95}, year = {2023}, language = {de} } @article{AllgaierHonal2023, author = {Allgaier-Honal, Recha}, title = {Die Laubh{\"u}tte im Spiegel eines Minhagim-Buches - ein Fragment aus der Genisa Reckendorf}, series = {Genisa-Bl{\"a}tter IV}, journal = {Genisa-Bl{\"a}tter IV}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-539-2}, doi = {10.25932/publishup-58488}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-584882}, pages = {61 -- 72}, year = {2023}, language = {de} } @article{ArielStuerzebecher2023, author = {Ariel, Neri Y. and St{\"u}rzebecher, Maria}, title = {„aber der Vater hat kein gen{\"u}gendes Einkommen in der Hand f{\"u}r ihren Jungfrauenpreis"}, series = {Genisa-Bl{\"a}tter IV}, journal = {Genisa-Bl{\"a}tter IV}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-539-2}, doi = {10.25932/publishup-58491}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-584911}, pages = {99 -- 104}, year = {2023}, language = {de} } @article{Siegel2023, author = {Siegel, Bj{\"o}rn}, title = {"They Took to the Sea" - Jewish History and Culture in Maritime Perspective(s)}, series = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, journal = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, number = {28}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-552-1}, issn = {1614-6492}, doi = {10.25932/publishup-58550}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585509}, pages = {11 -- 16}, year = {2023}, language = {en} } @book{DenzStellmacherUllrichetal.2023, author = {Denz, Rebekka and Stellmacher, Martha and Ullrich, Rebecca and Benar, Jael Andra and Uličn{\´a}, Lenka and Martini, Annett and Allgaier-Honal, Recha and Abramowicz, Isidoro and Ariel, Neri Y. and St{\"u}rzebecher, Maria and Weinhold, Beate and Singer-Brehm, Elisabeth}, title = {Genisa-Bl{\"a}tter IV}, editor = {Denz, Rebekka and Stellmacher, Martha and Ullrich, Rebecca}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-539-2}, doi = {10.25932/publishup-55535}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-555356}, publisher = {Universit{\"a}t Potsdam}, pages = {162}, year = {2023}, abstract = {Auch wenn Genisot - j{\"u}dische Ablagen nicht mehr verwendeter B{\"u}cher und Kultgegenst{\"a}nde - in der bisherigen historischen Forschung selten beachtet werden, sind sie als Quellen aus origin{\"a}r j{\"u}discher Hand von hoher Bedeutung und k{\"o}nnen unser Verst{\"a}ndnis der Umsetzung von Ritualen im Kontext der lokalen Gemeinde vertiefen. Der Schwerpunkt der ‚Genisa-Bl{\"a}tter IV' liegt auf Fragen nach j{\"u}disch-rituellen Praktiken und ihrer Bedeutung, ihren Objekten und Akteuren. Acht wissenschaftliche und ein essayistischer Beitrag n{\"a}hern sich diesen Themen {\"u}ber konkrete Funde aus Genisot mitteleurop{\"a}ischer j{\"u}discher Gemeinden, von religi{\"o}sen Texten wie dem Fragment einer Torarolle und einem Minhagim-Buch {\"u}ber Personaldokumente bis hin zu Musiknoten und Kleidungsst{\"u}cken.}, language = {de} } @article{Grafe2023, author = {Grafe, Jennifer}, title = {Zum aktuellen Stand und zu aktuellen Fragen des Menschenrechtsschutzes von LGBTQI+-Personen}, series = {MenschenRechtsMagazin}, volume = {28}, journal = {MenschenRechtsMagazin}, number = {2}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {2941-1149}, doi = {10.25932/publishup-60994}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-609944}, pages = {118 -- 128}, year = {2023}, abstract = {Menschenrechte von LGBTQI+-Personen sind in keinem Vertragswerk ausdr{\"u}cklich geregelt. Dementsprechend obliegt ihr Schutz der Rechtsprechung, die in den vergangenen Jahren ein ausdifferenziertes Schutzsystem etabliert hat, das sich vor allem auf den allgemeinen Schutz vor Diskriminierung, aber auch auf etwa das Recht auf Achtung des Privat- und Familienlebens st{\"u}tzt. Der Beitrag stellt die historische Entwicklung dieser LGBTQI+-Menschenrechte dar und tr{\"a}gt die aktuellen Rechtsquellen sowie die wichtigsten Entscheidungen zusammen, die weltweit und insbesondere in Europa diese Rechte gest{\"a}rkt haben. National und international begegnen rechtliche Probleme dort, wo immer spezifischere Fragestellungen auf weltweit politische Instabilit{\"a}t trifft. Dazu z{\"a}hlen etwa die Stigmatisierung von sog. Konversionsmaßnahmen und die Eintragung von Trans*personen ins Geburtenregister.}, language = {de} } @article{HermanussenSchefflerPulunganetal.2023, author = {Hermanussen, Michael and Scheffler, Christiane and Pulungan, Aman B. and Bandyopadhyay, Arup Ratan and Ghosh, Jyoti Ratan and {\"O}zdemir, Ay{\c{s}}eg{\"u}l and Koca {\"O}zer, Ba{\c{s}}ak and Musalek, Martin and Lebedeva, Lidia and Godina, Elena and Bogin, Barry and Tutkuviene, Janina and Budrytė, Milda and Gervickaite, Simona and Limony, Yehuda and Kirchengast, Sylvia and Buston, Peter and Groth, Detlef and R{\"o}sler, Antonia and Gasparatos, Nikolaos and Erofeev, Sergei and Novine, Masiar and Navazo, B{\´a}rbara and Dahinten, Silvia and Gomuła, Aleksandra and Nowak-Szczepańska, Natalia and Kozieł, Sławomir}, title = {Environment, social behavior, and growth}, series = {Human biology and public health}, volume = {1}, journal = {Human biology and public health}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {2748-9957}, doi = {10.52905/hbph2023.1.59}, pages = {14}, year = {2023}, abstract = {Twenty-four scientists met for the annual Auxological conference held at Krobielowice castle, Poland, to discuss the diverse influences of the environment and of social behavior on growth following last year's focus on growth and public health concerns (Hermanussen et al., 2022b). Growth and final body size exhibit marked plastic responses to ecological conditions. Among the shortest are the pygmoid people of Rampasasa, Flores, Indonesia, who still live under most secluded insular conditions. Genetics and nutrition are usually considered responsible for the poor growth in many parts of this world, but evidence is accumulating on the prominent impact of social embedding on child growth. Secular trends not only in the growth of height, but also in body proportions, accompany the secular changes in the social, economic and political conditions, with major influences on the emotional and educational circumstances under which the children grow up (Bogin, 2021). Aspects of developmental tempo and aspects of sports were discussed, and the impact of migration by the example of women from Bangladesh who grew up in the UK. Child growth was considered in particular from the point of view of strategic adjustments of individual size within the network of its social group. Theoretical considerations on network characteristics were presented and related to the evolutionary conservation of growth regulating hypothalamic neuropeptides that have been shown to link behavior and physical growth in the vertebrate species. New statistical approaches were presented for the evaluation of short term growth measurements that permit monitoring child growth at intervals of a few days and weeks.}, language = {en} } @article{GasparatosSchefflerHermanussen2023, author = {Gasparatos, Nikolaos and Scheffler, Christiane and Hermanussen, Michael}, title = {Assessing the applicability of changepoint analysis to analyse short-term growth}, series = {Human biology and public health}, volume = {1}, journal = {Human biology and public health}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {2748-9957}, doi = {10.52905/hbph2023.1.62}, pages = {15}, year = {2023}, abstract = {Background: Assessing short-term growth in humans is still fraught with difficulties. Especially when looking for small variations and increments, such as mini growth spurts, high precision instruments or frequent measurements are necessary. Daily measurements however require a lot of effort, both for anthropologists and for the subjects. Therefore, new sophisticated approaches are needed that reduce fluctuations and reveal underlying patterns. Objectives: Changepoints are abrupt variations in the properties of time series data. In the context of growth, such variations could be variation in mean height. By adjusting the variance and using different growth models, we assessed the ability of changepoint analysis to analyse short-term growth and detect mini growth spurts. Sample and Methods: We performed Bayesian changepoint analysis on simulated growth data using the bcp package in R. Simulated growth patterns included stasis, linear growth, catch-up growth, and mini growth spurts. Specificity and a normalised variant of the Matthews correlation coefficient (MCC) were used to assess the algorithm's performance. Welch's t-test was used to compare differences of the mean. Results: First results show that changepoint analysis can detect mini growth spurts. However, the ability to detect mini growth spurts is highly dependent on measurement error. Data preparation, such as ranking and rotating time series data, showed negligible improvements. Missing data was an issue and may affect the prediction quality of the classification metrics. Conclusion: Changepoint analysis is a promising tool to analyse short-term growth. However, further optimisation and analysis of real growth data is needed to make broader generalisations.}, language = {en} } @article{GrothSchefflerHermanussen2023, author = {Groth, Detlef and Scheffler, Christiane and Hermanussen, Michael}, title = {Human growth data analysis and statistics - the 5th G{\"u}lpe International Student Summer School}, series = {Human biology and public health}, volume = {1}, journal = {Human biology and public health}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {2748-9957}, doi = {10.52905/hbph2023.1.70}, pages = {5}, year = {2023}, abstract = {The Summer School in G{\"u}lpe (Ecological Station of the University of Potsdam) offers an exceptional learning opportunity for students to apply their knowledge and skills to real-world problems. With the guidance of experienced human biologists, statisticians, and programmers, students have the unique chance to analyze their own data and gain valuable insights. This interdisciplinary setting not only bridges different research areas but also leads to highly valuable outputs. The progress of students within just a few days is truly remarkable, especially when they are motivated and receive immediate feedback on their questions, problems, and results. The Summer School covers a wide range of topics, with this year's focus mainly on two areas: understanding the impact of socioeconomic and physiological factors on human development and mastering statistical techniques for analyzing data such as changepoint analysis and the St. Nicolas House Analysis (SNHA) to visualize interacting variables. The latter technique, born out of the Summer School's emphasis on gaining comprehensive data insights and understanding major relationships, has proven to be a valuable tool for researchers in the field. The articles in this special issue demonstrate that the Summer School in G{\"u}lpe stands as a testament to the power of practical learning and collaboration. Students who attend not only gain hands-on experience but also benefit from the expertise of professionals and the opportunity to engage with peers from diverse disciplines.}, language = {en} } @article{RoeslerSchefflerHermanussen2023, author = {R{\"o}sler, Antonia and Scheffler, Christiane and Hermanussen, Michael}, title = {No evidence of growth impairment after forced migration in Polish school children after World War II}, series = {Human biology and public health}, volume = {1}, journal = {Human biology and public health}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {2748-9957}, doi = {10.52905/hbph2023.1.68}, pages = {8}, year = {2023}, abstract = {Background: Migration is omnipresent. It can come hand in hand with emotional stress which is known to influence the growth of children. Objective: The aim of this study was to analyse whether type of migration (forced or voluntary) and the geographic direction had influenced the growth of Polish children after World War II. Sample and Methods: A sub dataset of 2,208 individuals between the ages of 2-20, created from data of the 2nd Polish Anthropological Survey carried out in 1966-1969, including anthropometrical data and social and demographic information based on questionnaire, was used to analyse migration effects. Results: No association could be found between the direction of migration and the height of the children. The confidence intervals of the means of all classified migration categories overlap significantly and the effect size of the influence of migration category on height is ds=.140, which is too low to see any effects, even if there were one. Conclusion: Neither forced nor voluntary migration in Poland after World War II led to a change in height in children of migrating families.}, language = {en} } @article{HermanussenScheffler2023, author = {Hermanussen, Michael and Scheffler, Christiane}, title = {Nutrition, size, and tempo}, series = {Human biology and public health}, volume = {2022}, journal = {Human biology and public health}, number = {3}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {2748-9957}, doi = {10.52905/hbph2022.3.37}, pages = {11}, year = {2023}, abstract = {Nutrition is a prerequisite, but not a regulator of growth. Growth is defined as increase in size over time. The understanding of growth includes an understanding of the binary concept of physical time and individual tempo. Excess food causes tempo acceleration. Food restriction delays tempo. Tempo reflects the pace of life. It is a dynamic physical response to a broad spectrum of social, economic, political, and emotional (SEPE) factors and can affect life expectancy. Variations in tempo create distortions of the z-score patterns of height and weight. Illness or intermediate food shortage lead to intermediate halts in development and create short dips in the z-score patterns. Children who develop throughout life at delayed pace usually run at lower z-scores for height and weight, and show a characteristic adolescent trough; children who develop throughout life at faster than average pace usually run at higher z-scores and show a characteristic adolescent peak in their z-score patterns. During adolescence, almost half of the height variance is due to tempo variation. There is not one tempo for the whole body. Different organ systems grow and mature at different pace.}, language = {en} } @article{DenzStellmacherUllrich2023, author = {Denz, Rebekka and Stellmacher, Martha and Ullrich, Rebecca}, title = {Einleitung}, series = {Genisa-Bl{\"a}tter IV}, journal = {Genisa-Bl{\"a}tter IV}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-539-2}, doi = {10.25932/publishup-58484}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-584843}, pages = {9 -- 13}, year = {2023}, language = {de} } @article{WagnerKrauskopfKnigge2023, author = {Wagner, Simon and Krauskopf, Karsten and Knigge, Michel}, title = {Kollegiale Fallbesprechung anhand erfahrungsbasierter Textvignetten p{\"a}dagogischer Situationen in der (inklusionsorientierten) Lehrkr{\"a}ftebildung}, series = {PSI-Potsdam: Ergebnisbericht zu den Aktivit{\"a}ten im Rahmen der Qualit{\"a}tsoffensive Lehrerbildung (2019-2023) (Potsdamer Beitr{\"a}ge zur Lehrerbildung und Bildungsforschung ; 3)}, journal = {PSI-Potsdam: Ergebnisbericht zu den Aktivit{\"a}ten im Rahmen der Qualit{\"a}tsoffensive Lehrerbildung (2019-2023) (Potsdamer Beitr{\"a}ge zur Lehrerbildung und Bildungsforschung ; 3)}, number = {3}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-568-2}, issn = {2626-3556}, doi = {10.25932/publishup-61619}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-616194}, pages = {37 -- 52}, year = {2023}, abstract = {Lehramtsstudierende {\"a}ußern vielfach den Wunsch nach umfangreichen praktischen Lerngelegenheiten. Insbesondere fallbasierte Lehr-Lern-Konzepte scheinen diesen Anspr{\"u}chen gerecht zu werden. Dieser Beitrag stellt ein an der Universit{\"a}t Potsdam entwickeltes Seminarkonzept vor, welches diesen Transfer zu f{\"o}rdern versucht. Die Basis des Konzepts bildet der Einsatz erfahrungsbasiert entwickelter Textvignetten p{\"a}dagogischer Situationen. Im Rahmen der Begleitseminare zum Praktikum in p{\"a}dagogisch-psychologischen Handlungsfeldern (PppH) wurde die kollegiale Fallbesprechung als eine Form zur angestrebten Transferf{\"o}rderung in dieses Seminarkonzept integriert. Dieser Beitrag skizziert zun{\"a}chst die erfahrungsbasierte Entwicklung der Vignetten sowie die theoretischen Grundlagen des Seminarkonzepts. Im Anschluss werden die praktische Implementation und erfahrungsbasierte konzeptionelle {\"A}nderung (design-based-research) in der Lehre beschrieben sowie erste Ergebnisse der systematischen empirischen Erprobung im Rahmen des PppH vorgestellt. Abschließend diskutieren die Autoren die Herausforderungen der praktischen Umsetzung auch mit Blick auf das Verstetigungsvorhaben.}, language = {de} } @article{BaberowskiLeonhardtRentschetal.2023, author = {Baberowski, David and Leonhardt, Thiemo and Rentsch, Susanne and Bergner, Nadine}, title = {Aufbau informatischer Kompetenzen im Kontext KI bei Lehramtsstudierenden des Faches Politik}, series = {Hochschuldidaktik Informatik HDI 2021 (Commentarii informaticae didacticae)}, journal = {Hochschuldidaktik Informatik HDI 2021 (Commentarii informaticae didacticae)}, number = {13}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-548-4}, issn = {1868-0844}, doi = {10.25932/publishup-61599}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-615995}, pages = {189 -- 209}, year = {2023}, abstract = {Lehrkr{\"a}fte aller F{\"a}cher ben{\"o}tigen informatische Kompetenzen, um der wachsenden Alltagsrelevanz von Informatik und aktuell g{\"u}ltigen Lehrpl{\"a}nen gerecht zu werden. Beispielsweise verweist in Sachsen der Lehrplan f{\"u}r das Fach Gemeinschaftskunde, Rechtserziehung und Wirtschaft am Gymnasium mit dem f{\"u}r die Jahrgangsstufe 11 vorgesehenem Thema „Digitalisierung und sozialer Wandel" auf K{\"u}nstliche Intelligenz (KI) und explizit auf die Bedeutung der informatischen Bildung. Um die n{\"o}tigen informatischen Grundlagen zu vermitteln, wurde f{\"u}r Lehramtsstudierende des Faches Politik ein Workshop erarbeitet, der die Grundlagen der Funktionsweise von KI anhand von {\"u}berwachtem maschinellen Lernen in neuronalen Netzen vermittelt. Inhalt des Workshops ist es, mit Bezug auf gesellschaftliche Implikationen wie Datenschutz bei Trainingsdaten und algorithmic bias einen informierten Diskurs zu politischen Themen zu erm{\"o}glichen. Ziele des Workshops f{\"u}r Lehramtsstudierende mit dem Fach Politik sind: (1) Aufbau informatischer Kompetenzen in Bezug zum Thema KI, (2) St{\"a}rkung der Diskussionsf{\"a}higkeiten der Studierenden durch passende informatische Kompetenzen und (3) Anregung der Studierenden zum Transfer auf passende Themenstellungen im Politikunterricht. Das Evaluationskonzept umfasst eine Pre-Post-Befragung zur Zuversicht zur Vermittlungskompetenz unter Bezug auf maschinelles Lernen in neuronalen Netzen im Unterricht, sowie die Analyse einer abschließenden Diskussion. F{\"u}r die Pre-Post-Befragung konnte eine Steigerung der Zuversicht zur Vermittlungskompetenz beobachtet werden. Die Analyse der Diskussion zeigte das Bewusstsein der Alltagsrelevanz des Themas KI bei den Teilnehmenden, aber noch keine Anwendung der informatischen Inhalte des Workshops zur St{\"u}tzung der Argumente in der Diskussion.}, language = {de} } @article{ThorbrueggeDeselSchaefer2023, author = {Thorbr{\"u}gge, Carsten and Desel, J{\"o}rg and Sch{\"a}fer, Len Ole}, title = {Vorqualifikationen und Anerkennungsoptionen im Informatikstudium}, series = {Hochschuldidaktik Informatik HDI 2021 (Commentarii informaticae didacticae)}, journal = {Hochschuldidaktik Informatik HDI 2021 (Commentarii informaticae didacticae)}, number = {13}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-548-4}, issn = {1868-0844}, doi = {10.25932/publishup-61394}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-613942}, pages = {73 -- 89}, year = {2023}, abstract = {Viele Informatikstudierende sammeln bereits vor ihrem Studium berufliche Erfahrungen im Informatikbereich, ohne dass diese inhaltlich und didaktisch im Studium ber{\"u}cksichtigt werden. Dieser Beitrag geht der Frage nach, welche Kompetenzen aus beruflichen Vorqualifikationen bei Informatikstudierenden existieren und wie diese in Bezug zu Anerkennungsoptionen gesetzt werden k{\"o}nnen. Betrachtet werden: die pauschale Anerkennung, die auf erworbenen Zertifikaten beruht; die individuelle Anerkennung, bei der individuell erworbene Kompetenzen nachgewiesen werden; die Adaption von individuellen Lernwegen, die Teilkompetenzen der Studierenden ber{\"u}cksichtigt. Es wird eine Interviewstudie vorgestellt, in der Kompetenzen f{\"u}r ein Sample von Informatikstudierenden mit Vorqualifikation als Fachinformatiker/in erhoben und eine Zuordnung zu den Anerkennungsoptionen vorgenommen wurde. F{\"u}r die pr{\"a}zisere Gestaltung von Anerkennungsprozessen und zur kritischen Reflexion der eingesetzten hochschuldidaktischen Konzepte wurde eine empirische Basis geschaffen. Die vorhandenen Konzepte richten sich traditionell an Abiturienten/ innen mit sehr geringem Informatikhintergrund und ber{\"u}cksichtigen die tats{\"a}chlich existierende Heterogenit{\"a}t der Studienanf{\"a}nger/innen nicht angemessen. Die Ergebnisse zeigen, dass die Befragten aus ihrer Vorqualifikation relevante fachliche Kompetenzen mitbringen, die mit den Anerkennungsoptionen korrespondieren und deren Weiterentwicklung dienen k{\"o}nnen. Dar{\"u}ber hinaus werden aus {\"u}berfachlichen Kompetenzen wie Selbststeuerungskompetenzen weitere Erkenntnisse zur Studiengestaltung gewonnen.}, language = {de} } @article{Weicker2023, author = {Weicker, Karsten}, title = {Peer-Review als Katalysator im Lernprozess}, series = {Hochschuldidaktik Informatik HDI 2021 (Commentarii informaticae didacticae)}, journal = {Hochschuldidaktik Informatik HDI 2021 (Commentarii informaticae didacticae)}, number = {13}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-548-4}, issn = {1868-0844}, doi = {10.25932/publishup-61602}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-616025}, pages = {257 -- 277}, year = {2023}, abstract = {Peer-Reviews werden seit geraumer Zeit in unterschiedlichen Lehrszenarien eingesetzt. In diesem Paper wird untersucht, inwieweit das Peer- Review die Auseinandersetzung mit den Inhalten eines Grundlagenmoduls in einem pr{\"a}senzfreien Lehrszenario bef{\"o}rdern kann. Dabei scheint in den Ergebnissen die Qualit{\"a}t der selbst erstellten Reviews einer der wichtigsten Einflussfaktoren f{\"u}r den Lernerfolg zu sein, w{\"a}hrend Experten-Feedback und weitere Faktoren deutlich untergeordnet erscheinen. Die F{\"a}higkeit ausf{\"u}hrliche Peer-Reviews zu verfassen geht einher mit dem Erwerb von fachlicher Kompetenz bzw. entsprechenden fachlichen Vorkenntnissen.}, language = {de} } @article{SchefflerHermanussen2023, author = {Scheffler, Christiane and Hermanussen, Michael}, title = {What does stunting tell us?}, series = {Human biology and public health}, volume = {2022}, journal = {Human biology and public health}, number = {3}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {2748-9957}, doi = {10.52905/hbph2022.3.36}, pages = {1 -- 15}, year = {2023}, abstract = {Stunting is commonly linked with undernutrition. Yet, already after World War I, German pediatricians questioned this link and stated that no association exists between nutrition and height. Recent analyses within different populations of Low- and middle-income countries with high rates of stunted children failed to support the assumption that stunted children have a low BMI and skinfold sickness as signs of severe caloric deficiency. So, stunting is not a synonym of malnutrition. Parental education level has a positive influence on body height in stunted populations, e.g., in India and in Indonesia. Socially disadvantaged children tend to be shorter and lighter than children from affluent families. Humans are social mammals; they regulate growth similar to other social mammals. Also in humans, body height is strongly associated with the position within the social hierarchy, reflecting the personal and group-specific social, economic, political, and emotional environment. These non-nutritional impact factors on growth are summarized by the concept of SEPE (Social-Economic-Political-Emotional) factors. SEPE reflects on prestige, dominance-subordination, social identity, and ego motivation of individuals and social groups.}, language = {en} } @article{Schneider2023, author = {Schneider, Edina}, title = {Erfassung der Reflexivit{\"a}t von Lehramtsstudierenden}, series = {Reflexion in der Lehrkr{\"a}ftebildung: Empirisch - Phasen{\"u}bergreifend - Interdisziplin{\"a}r (Potsdamer Beitr{\"a}ge zur Lehrerbildung und Bildungsforschung ; 4)}, journal = {Reflexion in der Lehrkr{\"a}ftebildung: Empirisch - Phasen{\"u}bergreifend - Interdisziplin{\"a}r (Potsdamer Beitr{\"a}ge zur Lehrerbildung und Bildungsforschung ; 4)}, number = {4}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-566-8}, issn = {2626-3556}, doi = {10.25932/publishup-61937}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-619379}, pages = {99 -- 113}, year = {2023}, abstract = {Dieser Beitrag untersucht, welche latente Struktur sich in der Reflexivit{\"a}t von Lehramtsstudierenden identifizieren l{\"a}sst. Es wird gefragt, inwieweit sich entlang eines Kohortenvergleichs differente Strukturen in der Reflexivit{\"a}t erkennen lassen und wie Lehramtsstudierende die Notwendigkeit und die H{\"a}ufigkeit der Reflexion sowie die aus der Reflexion hervorgehenden Einsichten einsch{\"a}tzen. Hierf{\"u}r werden Daten von Studierenden des Lehramts f{\"u}r Grund-, Sekundar-, F{\"o}rderschulen und Gymnasien der Martin-Luther-Universit{\"a}t Halle-Wittenberg genutzt. Bei der Operationalisierung von Reflexivit{\"a}t wurde die IRIS-Skala in einer auf den Schulkontext modifizierten Variante adaptiert sowie einzelne Items neu entwickelt. Die Faktorenanalyse repliziert die angenommene Mehrdimensionalit{\"a}t der Reflexivit{\"a}t mit vier Faktoren. Zudem zeigen sich kohortenspezifisch differente Strukturen in der Reflexivit{\"a}t, die auf Umstrukturierungs-, Verdichtungs- und Weiterentwicklungsprozesse im Bereich implizites Wissen und Reflexivit{\"a}t verweisen, wie in der Kompetenzentwicklungsphasentheorie und in entwicklungs- und berufsbiographietheoretischen Ans{\"a}tzen postuliert wird. Mittelwertvergleiche zwischen den Studierendengruppen verweisen auf tendenzielle Zuw{\"a}chse in den Dimensionen.}, language = {de} } @misc{Ginsburg2023, author = {Ginsburg, Shai}, title = {Marina Zilbergerts, The Yeshiva and the Rise of Modern Hebrew Literature (Bloomington, In: Indiana University Press, 2022), 184 pp., \$ 35.00}, series = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, journal = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, number = {28}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-552-1}, issn = {1614-6492}, doi = {10.25932/publishup-58598}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585985}, pages = {143 -- 147}, year = {2023}, language = {en} } @misc{Jessen2023, author = {Jessen, Caroline}, title = {Kathrin Wittler, Morgenl{\"a}ndischer Glanz: Eine deutsche j{\"u}dische Literaturgeschichte (1750 - 1850) (= Schriftenreihe wissenschaftlicher Abhandlungen des Leo Baeck Instituts 79) (T{\"u}bingen: Mohr Siebeck, 2019), 620 S., 99,00 €}, series = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, journal = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, number = {28}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-552-1}, issn = {1614-6492}, doi = {10.25932/publishup-58589}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585898}, pages = {128 -- 131}, year = {2023}, language = {en} } @misc{Schachter2023, author = {Schachter, Allison}, title = {Barry Trachtenberg, The Holocaust \& the Exile of Yiddish: A History of the Algemeyne Entsiklopedye (New Brunswick, NJ: Rutgers University Press, 2022), 336 pp., \$ 37.50}, series = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, journal = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, number = {28}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-552-1}, issn = {1614-6492}, doi = {10.25932/publishup-58583}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585836}, pages = {121 -- 125}, year = {2023}, language = {en} } @misc{Fischer2023, author = {Fischer, Saskia}, title = {Klaus Holz und Thomas Haury, Antisemitismus gegen Israel (Hamburg: Hamburger Edition 2021), 424 S., 35,00 €}, series = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, journal = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, number = {28}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-552-1}, issn = {1614-6492}, doi = {10.25932/publishup-58593}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585935}, pages = {134 -- 137}, year = {2023}, language = {de} } @misc{Emig2023, author = {Emig, Caroline}, title = {Miriam Udel, Honey on the Page: A Treasury of Yiddish Children's Literature (New York, NY: New York University Press, 2020), 352 S., 29,95 €}, series = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, journal = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, number = {28}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-552-1}, issn = {1614-6492}, doi = {10.25932/publishup-58595}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585951}, pages = {140 -- 142}, year = {2023}, language = {de} } @misc{Schirrmeister2023, author = {Schirrmeister, Sebastian}, title = {Tamara Or, Heimat im Exil: Eine hebr{\"a}ische Diasporakultur in Berlin 1897 - 1933 (G{\"o}ttingen: Wallstein, 2020), 431 S., 42,00 €}, series = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, journal = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, number = {28}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-552-1}, issn = {1614-6492}, doi = {10.25932/publishup-58588}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585887}, pages = {125 -- 127}, year = {2023}, language = {de} } @misc{Jungheim2023, author = {Jungheim, Elias S.}, title = {Theresa Eisele, Szenen der Wiener Moderne: Drei Artefakte und ihre Vorstellungswelten des J{\"u}dischen (= toldot. Essays zur j{\"u}dischen Geschichte und Kultur 14) (G{\"o}ttingen: Vandenhoeck \& Ruprecht, 2021), 167 S., 25,00 €}, series = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, journal = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, number = {28}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-552-1}, issn = {1614-6492}, doi = {10.25932/publishup-58592}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585929}, pages = {131 -- 133}, year = {2023}, language = {de} } @misc{Cooperman2023, author = {Cooperman, Jessica}, title = {Mark Wortman, Admiral Hyman Rickover: Engineer of Power (New Haven, CT: Yale University Press, 2022), 328 pp., \$ 26.00}, series = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, journal = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, number = {28}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-552-1}, issn = {1614-6492}, doi = {10.25932/publishup-58594}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585943}, pages = {137 -- 140}, year = {2023}, language = {en} } @misc{Jacob2023, author = {Jacob, Frank}, title = {Shaul Magid, Meir Kahane: The Public Life and Political Thought of an American Jewish Radical (Princeton, NJ: Princeton University Press, 2021), 296 pp., \$ 35.00}, series = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, journal = {PaRDeS : Journal of the Association for Jewish Studies in Germany}, number = {28}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-552-1}, issn = {1614-6492}, doi = {10.25932/publishup-58582}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-585827}, pages = {119 -- 121}, year = {2023}, language = {en} } @article{OpelNetzerDesel2023, author = {Opel, Simone and Netzer, Cajus Marian and Desel, J{\"o}rg}, title = {Adaption von Lernwegen in adaptierten Lehrmaterialien f{\"u}r Studierende mit Berufsausbildungsabschluss}, series = {Hochschuldidaktik Informatik HDI 2021 (Commentarii informaticae didacticae)}, journal = {Hochschuldidaktik Informatik HDI 2021 (Commentarii informaticae didacticae)}, number = {13}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-548-4}, issn = {1868-0844}, doi = {10.25932/publishup-61418}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-614188}, pages = {91 -- 114}, year = {2023}, abstract = {Obwohl immer mehr Menschen nicht direkt ein Studium aufnehmen, sondern zuvor eine berufliche Ausbildung absolvieren, werden die in der Ausbildung erworbenen Kompetenzen von den Hochschulen inhaltlich und didaktisch meist ignoriert. Ein Ansatz, diese Kompetenzen zu w{\"u}rdigen, ist die formale Anrechnung von mitgebrachten Kompetenzen als (f{\"u}r den Studienabschluss erforderliche) Leistungspunkte. Eine andere Variante ist der Einsatz von speziell f{\"u}r die Zielgruppe der Studierenden mit Vorkenntnissen adaptiertem Lehr-Lernmaterial. Um dar{\"u}ber hinaus individuelle Unterschiede zu ber{\"u}cksichtigen, erlaubt eine weitere Adaption individueller Lernpfade den Lernenden, genau die jeweils fehlenden Kompetenzen zu erwerben. In diesem Beitrag stellen wir die exemplarische Entwicklung derartigen Materials anhand des Kurses „Datenbanken" f{\"u}r die Zielgruppe der Studierenden mit einer abgeschlossenen Ausbildung zum Fachinformatiker bzw. zur Fachinformatikerin vor.}, language = {de} } @article{Weber2023, author = {Weber, Gerhard}, title = {Informatik und Barrierefreiheit}, series = {Hochschuldidaktik Informatik HDI 2021 (Commentarii informaticae didacticae)}, journal = {Hochschuldidaktik Informatik HDI 2021 (Commentarii informaticae didacticae)}, number = {13}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-548-4}, issn = {1868-0844}, doi = {10.25932/publishup-61387}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-613874}, pages = {35 -- 50}, year = {2023}, abstract = {Barrierefreiheit kann durch Methoden der Informatik hergestellt und ausgebaut werden. Dieser eingeladene Beitrag stellt die Anforderungen von Menschen mit den umfangreichsten Benutzererfordernissen an Software vor, die z. B. eigene Schriftsysteme wie Braille und entsprechende taktile Ausgabeger{\"a}te verwenden. Assistive Technologien umfassen dabei auch Software verschiedenster Art. Es werden die wichtigsten Kompetenzen daf{\"u}r vorgestellt. Im Curriculum der Informatik k{\"o}nnen diese Kompetenzen im Rahmen von speziellen Vorlesungen und {\"U}bungen vermittelt werden oder sie werden in die jeweiligen Fachgebiete integriert. Um den Studienbetrieb ebenfalls barrierefrei zu gestalten, sind weitere Anstrengungen notwendig, die Lehrende, Verwaltung und die Hochschulleitung einbeziehen.}, language = {de} } @article{Wyss2023, author = {Wyss, Corinne}, title = {Reflexionsprozesse in der Lehrkr{\"a}ftebildung gestalten und f{\"o}rdern}, series = {Reflexion in der Lehrkr{\"a}ftebildung: Empirisch - Phasen{\"u}bergreifend - Interdisziplin{\"a}r (Potsdamer Beitr{\"a}ge zur Lehrerbildung und Bildungsforschung ; 4)}, journal = {Reflexion in der Lehrkr{\"a}ftebildung: Empirisch - Phasen{\"u}bergreifend - Interdisziplin{\"a}r (Potsdamer Beitr{\"a}ge zur Lehrerbildung und Bildungsforschung ; 4)}, number = {4}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-566-8}, issn = {2626-3556}, doi = {10.25932/publishup-61893}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-618938}, pages = {19 -- 24}, year = {2023}, abstract = {Seit John Dewey und Donald Sch{\"o}n besteht weitgehender Konsens, dass Reflexivit{\"a}t eine wichtige Kompetenz von Lehrkr{\"a}ften darstellt und die Reflexion in den Unterrichtsalltag einer Lehrkraft integriert sein sollte. Es wird davon ausgegangen, dass Reflexion, wenn sie absichtsvoll und zielgerichtet eingesetzt wird, die berufliche Entwicklung einer Lehrkraft positiv beeinflussen kann. {\"U}berzeugungen, Einstellungen und Verhaltensweisen k{\"o}nnen durch die Reflexion bewusster wahrgenommen und ver{\"a}ndert werden. Sie regt Lernprozesse an, st{\"a}rkt Eigenverantwortung und Autonomie und steigert die Berufszufriedenheit. Allerdings birgt die F{\"o}rderung von Reflexivit{\"a}t im Rahmen der Lehrkr{\"a}ftebildung einige Schwierigkeiten und trotz nunmehr {\"u}ber 40 Jahren theoretischer sowie empirischer Er{\"o}rterung bleiben bis heute auch verschiedene Fragen unbeantwortet. Im Beitrag werden auf Grundlage der aktuellen Diskussion das Konzept der Reflexion sowie M{\"o}glichkeiten und Grenzen der F{\"o}rderung von Reflexivit{\"a}t dargelegt und es wird aufgezeigt, welche besonderen Herausforderungen der Lehrberuf hierbei birgt. Abschließend wird er{\"o}rtert, welche aktuellen Forschungsl{\"u}cken und -desiderate bestehen.}, language = {de} } @techreport{Dehnen2023, type = {Working Paper}, author = {Dehnen, Elias}, title = {Juridifying Bolsonaro's mass deforestation policies in Brazil through the International Criminal Court}, series = {Staat, Recht und Politik - Forschungs- und Diskussionspapiere}, journal = {Staat, Recht und Politik - Forschungs- und Diskussionspapiere}, number = {14}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {2509-6974}, doi = {10.25932/publishup-58174}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-581742}, pages = {15}, year = {2023}, abstract = {Under Brazil's ex-president Bolsonaro, deforestation of the Amazon increased dramatically. An Austrian NGO filed a complaint to the Prosecutor of the International Criminal Court (ICC) against Bolsonaro in October 2021, accusing him of crimes against humanity against the backdrop of his involvement in environmental destruction. This paper deals with the question of whether this initi-ative constitutes a promising means of juridification to mitigate conflicts revolving around mass deforestation in Brazil. It thematizes attempts to juridify environmental destruction in international criminal law and examines the Climate Fund Case at the Brazilian Supreme Court. Finally, emerging problems and arguments in favour of starting preliminary examinations at the ICC against Bolsonaro are illuminated. This paper provides arguments as to why the initiative might be a promising undertaking, even though it is unlikely that Bolsonaro will be arrested.}, language = {en} } @article{EikerlingCzokSallat2023, author = {Eikerling, Maren and Czok, Clara and Sallat, Stephan}, title = {Wie ausgetauscht! Digital und interdisziplin{\"a}r vernetzt am Vi(rtuellen) Ru(nden) Ti(sch)}, series = {Spektrum Patholinguistik 16}, journal = {Spektrum Patholinguistik 16}, number = {16}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-559-0}, issn = {1866-9433}, doi = {10.25932/publishup-61357}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-613574}, pages = {185 -- 199}, year = {2023}, abstract = {In diesem Beitrag werden das Konzept der „Virtuellen Runden Tische" (ViRuTi) sowie Ergebnisse ihrer Pilotierung und Perspektiven f{\"u}r die Implementierung vorgestellt. Dabei geht es um die ressourcenfreundliche, digitale Umsetzung und niederschwellige Durchf{\"u}hrung der ViRuTi. Inklusive Bestrebungen sind fest mit der Notwendigkeit interdisziplin{\"a}rer Fallbesprechungen verkn{\"u}pft. Akteure aus Kita, Schule und Gesundheitswesen k{\"o}nnen mit Bezugspersonen des betreffenden Kindes gemeinsam am runden Tisch Perspektiven austauschen und Entscheidungen treffen, bspw. zur Einleitung und Evaluierung von Sprachf{\"o}rder- oder -therapiemaßnahmen. Eine durch ein Konzept vorgegebene Struktur erleichtert den Austausch und die Fokussierung der Beteiligten auf die Ressourcen und Bed{\"u}rfnisse des Kindes. Außerdem ist dieser interprofessionelle bzw. transdisziplin{\"a}re Austausch auch digital m{\"o}glich.}, language = {de} } @article{FaixtePoelWahbeetal.2023, author = {Faix, Ann-Christin and te Poel, Kathrin and Wahbe, Nadia and Pieper, Martin}, title = {Was reflektieren wir und wie reflektieren wir?}, series = {Reflexion in der Lehrkr{\"a}ftebildung: Empirisch - Phasen{\"u}bergreifend - Interdisziplin{\"a}r (Potsdamer Beitr{\"a}ge zur Lehrerbildung und Bildungsforschung ; 4)}, journal = {Reflexion in der Lehrkr{\"a}ftebildung: Empirisch - Phasen{\"u}bergreifend - Interdisziplin{\"a}r (Potsdamer Beitr{\"a}ge zur Lehrerbildung und Bildungsforschung ; 4)}, number = {4}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-566-8}, issn = {2626-3556}, doi = {10.25932/publishup-61899}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-618998}, pages = {47 -- 52}, year = {2023}, abstract = {In diesem Beitrag werden aus einer Metaperspektive vier verschiedene Reflexionsformate aus dem Bielefelder Projekt „BiProfessional" der Qualit{\"a}tsoffensive Lehrerbildung gegen{\"u}bergestellt. Gemeinsamkeiten und Unterschiede werden mit Blick auf das Reflexionsverst{\"a}ndnis, den Reflexionsgegenstand und den jeweiligen Zugang beschrieben. Am Ende des Beitrags werden Konsequenzen f{\"u}r eine multiparadigmatische Lehrkr{\"a}ftebildung aufgezeigt.}, language = {de} } @article{Radtke2023, author = {Radtke, Wolfgang}, title = {Ann{\"a}herungen an Christian von Rother}, series = {Die Preußische Seehandlung zwischen Markt, Staat und Kultur : 40 Jahre Stiftung Preußische Seehandlung}, journal = {Die Preußische Seehandlung zwischen Markt, Staat und Kultur : 40 Jahre Stiftung Preußische Seehandlung}, editor = {Wienfort, Monika}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-562-0}, doi = {10.25932/publishup-59987}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-599878}, pages = {53 -- 80}, year = {2023}, abstract = {Christian (von) Rother, Chef der Preußischen Seehandlung 1820-1848, ist vermutlich die pr{\"a}gendste Gestalt der Institution im 19. Jahrhundert. Seine Lebensgeschichte als Sohn eines schlesischen Bauern zeugt von sozialem Aufstieg und einer eindrucksvollen Beamtenkarriere. Rother formte die Seehandlung zu einem Konglomerat von gewerblichen Unternehmen, die durch Bankengesch{\"a}fte, Chausseebauprogramme und das Engagement des Staates in der Wirtschaftsf{\"o}rderung leistungsstark gemacht werden sollten. Der Erfolg blieb allerdings unterschiedlich. In den 1840er Jahren stießen diese Bem{\"u}hungen dar{\"u}ber hinaus auf Kritik von unternehmerischen Konkurrenten. Bleibende Bedeutung behauptete eine von Rother gegr{\"u}ndete soziale Einrichtung, die in Berlin ans{\"a}ssige Rother-Stiftung f{\"u}r arme und unverheiratete T{\"o}chter von Beamten und Offizieren.}, language = {de} } @article{Parzinger2023, author = {Parzinger, Herrmann}, title = {Seehandlung, Kunstkammer, Museum, Humboldt Forum - von der Vielschichtigkeit eines Federmantels und seines Weges}, series = {Die Preußische Seehandlung zwischen Markt, Staat und Kultur : 40 Jahre Stiftung Preußische Seehandlung}, journal = {Die Preußische Seehandlung zwischen Markt, Staat und Kultur : 40 Jahre Stiftung Preußische Seehandlung}, editor = {Wienfort, Monika}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-562-0}, doi = {10.25932/publishup-59989}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-599892}, pages = {103 -- 127}, year = {2023}, abstract = {Das in Bremen gebaute Handelsschiff Princess Louise, gewissermaßen das Flaggschiff der Preußischen Seehandlung, unternahm zwischen 1825 und 1844 insgesamt sechs Weltumsegelungen. Das Schiff fungierte u. a. als {\"U}berbringer diplomatischer Geschenke zwischen Herrschern und Herrscherfamilien. Von der ersten Weltumsegelung brachte es den ber{\"u}hmten Federmantel mit, den der hawai'ianische Monarch Kamehameha III. dem preußischen K{\"o}nig Friedrich Wilhelm III. zum Geschenk machte. Bei der zweiten Weltumsegelung wurden wiederum Gaben des preußischen K{\"o}nigs nach Hawai'i transportiert. Die Princess Louise brachte aber dar{\"u}ber hinaus auch Gebrauchsgegenst{\"a}nde wie Kleidung, Waffen, K{\"o}rbe, Tongef{\"a}ße und F{\"a}cher aus der S{\"u}dsee und S{\"u}damerika nach Europa. Solche ethnographischen Objekte der Vergangenheit k{\"o}nnen nicht zuletzt mit und durch zeitgen{\"o}ssische Kunst Fragen an die Gegenwart stellen.}, language = {de} } @article{Steinberg2023, author = {Steinberg, Romy Simone}, title = {Sag mir, wo die W{\"o}rter sind …}, series = {Spektrum Patholinguistik 16}, journal = {Spektrum Patholinguistik 16}, number = {16}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-559-0}, issn = {1866-9433}, doi = {10.25932/publishup-61346}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-613468}, pages = {103 -- 106}, year = {2023}, abstract = {Dieser Beitrag gibt einen Einblick in die ehrenamtliche Arbeit mit Menschen mit Aphasie und deren Angeh{\"o}rigen. Vor sieben Jahren gr{\"u}ndete Romy Steinberg gemeinsam mit ihrem Mann, der selbst von Aphasie betroffen ist, den Chor „AphaSingers". Jeden Monat findet sich der Chor zu einem Workshop-Tag zusammen, der viel mehr als nur die Gesangsprobe beinhaltet. Partizipation umfasst den Austausch miteinander, sch{\"o}ne gemeinsame Erlebnisse und Zusammenhalt. All dies bietet dieser Chor den Mitgliedern und erntet hierf{\"u}r viel Anerkennung und Dankbarkeit.}, language = {de} } @article{BoettcherThurnerHaefneretal.2023, author = {B{\"o}ttcher, Axel and Thurner, Veronika and H{\"a}fner, Tanja and Ottinger, Sarah}, title = {Erkenntnisse aus der Analyse von Studienverlaufsdaten als Grundlage f{\"u}r die Gestaltung von Beratungsangeboten}, series = {Hochschuldidaktik Informatik HDI 2021 (Commentarii informaticae didacticae)}, journal = {Hochschuldidaktik Informatik HDI 2021 (Commentarii informaticae didacticae)}, number = {13}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-548-4}, issn = {1868-0844}, doi = {10.25932/publishup-61569}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-615693}, pages = {137 -- 156}, year = {2023}, abstract = {Viele Studierende stoßen im Rahmen ihres Informatikstudiums auf Probleme und ben{\"o}tigen individuell bedarfsgerechte Unterst{\"u}tzung, um beispielsweise trotz gewisser Startschwierigkeiten ihr Studium erfolgreich zu Ende zu f{\"u}hren. In die damit verbundene Lern- bzw. Studienberatung fließen Empfehlungen zur weiteren Studienverlaufsplanung ein. Anhand einer Datenanalyse {\"u}ber den Pr{\"u}fungsleistungsdaten der Studierenden {\"u}berpr{\"u}fen wir die hinter diesen Empfehlungen liegenden Hypothesen und leiten aus den dabei gewonnenen Erkenntnissen Konsequenzen f{\"u}r die Beratung ab. Insgesamt zeigt sich, dass sich nach den ersten Semestern ein mittlerer Bereich von Studierenden identifizieren l{\"a}sst, bei denen Studienabbruch und Studienerfolg etwa gleich wahrscheinlich sind. F{\"u}r diese Personengruppe ist Beratungsbedarf dringend gegeben. Gleichzeitig st{\"o}ßt die Datenanalyse auch an gewisse Grenzen, denn es zeigen sich insgesamt keine echt trennscharfen Muster, die fr{\"u}hzeitig im Studium eindeutig Erfolg oder Misserfolg prognostizieren. Dieses Ergebnis ist jedoch insofern erfreulich, als es bedeutet, dass jede:r Studierende:r auch nach einem suboptimalen Start ins Studium noch eine Chance auf einen Abschluss hat.}, language = {de} } @article{ZaukeNeumann2023, author = {Zauke, Svenja and Neumann, Sandra}, title = {Die kommunikative Partizipation von Kindern mit Sprachentwicklungsst{\"o}rungen im Vorschulalter: erste Daten mit dem FOCUS©-34-G}, series = {Spektrum Patholinguistik 16}, journal = {Spektrum Patholinguistik 16}, number = {16}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-559-0}, issn = {1866-9433}, doi = {10.25932/publishup-61348}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-613489}, pages = {117 -- 133}, year = {2023}, abstract = {Bei Kindern mit Sprachentwicklungsst{\"o}rungen (SES) k{\"o}nnen sich Symptome auf sprachlich-funktionaler Ebene sehr variabel auf die kommunikative Partizipation im Alltag auswirken. Kommunikative Partizipation wird definiert als sprachlich-kommunikatives Teilnehmen an Lebenssituationen, in denen Wissen, Informationen, Ideen oder Gef{\"u}hle ausgetauscht werden. Der deutschsprachige ‚Fokus auf den Erfolg der Kommunikation f{\"u}r Kinder unter sechs Jahren' (FOCUS©-34-G) ist ein evaluierter Fragebogen zur Fremdeinsch{\"a}tzung der kommunikativen Partizipation von Kindern (1;6 bis 5;11 Jahre). Ziel unserer Studie war die Untersuchung der Auswirkungen einer SES auf die kommunikative Partizipation betroffener Kinder im Alter zwischen 2;0 und 4;11 Jahren anhand des FOCUS©-34-G. Eltern von Kindern mit SES f{\"u}llten den FOCUS©-34-G sowie einen Demografie-Bogen aus. Es konnten erste Daten von 22 Kindern (16 Jungen) im Alter zwischen 2;7 und 3;11 (M = 3;3 Jahre, SD = 0;4 Jahre) erhoben werden. Im FOCUS©-34-G erreichten Kinder mit SES einen Gesamtwert zwischen 54 und 197 (M = 120.55, SD = 40.91) von 238 maximal m{\"o}glichen Punkten. Diese Ergebnisse zeigen eine eingeschr{\"a}nkte kommunikative Partizipation von Kindern mit SES, die es in einer ICF-CY-orientierten sprachtherapeutischen Intervention zu beachten gilt. Als klinisches Assessmentinstrument kann der FOCUS©-34-G als Kurzversion des FOCUS©-G als geeignet angesehen werden.}, language = {de} } @article{Holle2023, author = {Holle, J{\"o}rg}, title = {Selbstreflexion von Lehramtsstudierenden zu Beginn des Studiums}, series = {Reflexion in der Lehrkr{\"a}ftebildung: Empirisch - Phasen{\"u}bergreifend - Interdisziplin{\"a}r (Potsdamer Beitr{\"a}ge zur Lehrerbildung und Bildungsforschung ; 4)}, journal = {Reflexion in der Lehrkr{\"a}ftebildung: Empirisch - Phasen{\"u}bergreifend - Interdisziplin{\"a}r (Potsdamer Beitr{\"a}ge zur Lehrerbildung und Bildungsforschung ; 4)}, number = {4}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-566-8}, issn = {2626-3556}, doi = {10.25932/publishup-61934}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-619343}, pages = {89 -- 97}, year = {2023}, abstract = {Selbstreflexion ist erkl{\"a}rtes Ziel der Eignungsabkl{\"a}rung und ein intendierter Effekt von Online Self Assessments (OSA). In Deutschland setzen die lehrkr{\"a}ftebildenden Hochschulen OSA nahezu fl{\"a}chendeckend ein, um Studieninteressierten der Lehr{\"a}mter eine Unterst{\"u}tzung bei der Studienwahl zu bieten. Es erscheint lohnenswert, die Selbstreflexion von Studienanf{\"a}ngern zu betrachten und Zusammenh{\"a}nge und Unterschiede hinsichtlich verschiedener Merkmale wie Geschlecht, Alter und angestrebtes Lehramt zu untersuchen. In einer Querschnittserhebung per Fragebogen bei (n = 3741) Erstsemesterstudierenden der Lehr{\"a}mter an n = 10 Hochschulstandorten kann gezeigt werden, 1) dass angehende Lehrkr{\"a}fte sich hinsichtlich ihrer Selbstreflexion hoch einsch{\"a}tzen, 2) dass es einen signifikanten altersbezogenen Unterschied bei der Selbstreflexion gibt, 3) dass sich weibliche Studierende signifikant selbstreflektierter einsch{\"a}tzen als ihre m{\"a}nnlichen Kollegen und 4) dass Studierende unterschiedlicher Lehr{\"a}mter sich in ihrer selbsteingesch{\"a}tzten Selbstreflexion signifikant unterscheiden.}, language = {de} } @article{Czubaiko2023, author = {Czubaiko, Achim}, title = {Menschenrechtsklagen vor Zivilgerichten in Deutschland}, series = {MenschenRechtsMagazin}, volume = {28}, journal = {MenschenRechtsMagazin}, number = {1}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {2941-1149}, doi = {10.25932/publishup-58779}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-587798}, pages = {16 -- 26}, year = {2023}, abstract = {Sp{\"a}testens seit dem Brand einer Textilfabrik in Karatschi, Pakistan, deren Hauptabnehmer das deutsche Textilunternehmen KiK war, ist die Frage nach der zivilrechtlichen Justiziabilit{\"a}t von Menschenrechtsverletzungen im Ausland auch in der Bundesrepublik angekommen. Parallel hierzu hatte bereits der Einsturz des Rana Plaza, einem Fabrikgeb{\"a}ude in Dhaka, Bangladesch, das zahlreiche Zulieferfirmen der europ{\"a}ischen sowie u.s.-amerikanischen Bekleidungsindustrie beherbergte, traurige Ber{\"u}hmtheit erlangt. Beide Vorf{\"a}lle hatten in den Industriestaaten des globalen Nordens eine nachhaltige Debatte dar{\"u}ber ausgel{\"o}st, welche Verantwortung inl{\"a}ndischen Abnehmerunternehmen f{\"u}r die Einhaltung internationaler Menschenrechtsstandards entlang der global angelegten Lieferkette zukommt. An deren vorl{\"a}ufigem Ende steht eine Reihe von Spezialgesetzen, die heimischen Betrieben ausdifferenzierte Sorgfalts- und {\"U}berwachungspflichten bez{\"u}glich der Arbeitsbedingungen in den - h{\"a}ufig im globalen S{\"u}den gelegenen - Produktionsst{\"a}tten auferlegen. Als Folge dieses geostrategischen Nord-S{\"u}d-Konfliktes wohnt in Deutschland erhobenen Menschenrechtsklagen im Regelfall ein grenz{\"u}berscheitendes Moment inne, weshalb sich die Rechtsverfolgung individuell Betroffener mit den Fragen des Internationalen Privatrechts nach der gerichtlichen Zust{\"a}ndigkeit sowie des anwendbaren Sachrechts konfrontiert sieht. Dass ein Verfahren bereits auf dieser Ebene scheitern kann, verdeutlicht auf paradigmatische Weise das eingangs erw{\"a}hnte Verfahren gegen KiK vor dem LG Dortmund, in welchem das ung{\"u}nstige pakistanische Verj{\"a}hrungsrecht zur Anwendung gelangte. Rechtspolitisch wird die Funktion des Rechtsgebietes indes unterschiedlich beurteilt. W{\"a}hrend ein Ansatz gleichsam auf materieller Ebene die Entwicklung spezieller Sorgfaltsnormen f{\"u}r Unternehmen in Abnehmerstaaten verfolgt („Verantwortungsl{\"o}sung"), f{\"u}hrt eine andere Auffassung den Kern der Problematik nicht auf das - oftmals durchaus funktionale - Produktionslandrecht, sondern vielmehr auf dessen strukturelle Durchsetzungsdefizite zur{\"u}ck („Kognitionsl{\"o}sung"). Der Beitrag vollzieht die Implikationen beider Ans{\"a}tze f{\"u}r Zivilprozesse in Deutschland nach. Hierf{\"u}r wird die Menschenrechtsklage zun{\"a}chst in das deutsche Verfahrensrecht eingeordnet (I.) bevor die Rolle des Internationalen Privatrechtes er{\"o}rtert werden kann (II.). Anschließend werden sowohl die Sorgfaltsregime in den Abnehmerstaaten (III.) als auch Rechtsbehelfe in den Produktionsl{\"a}ndern am Beispiel Bangladeschs (IV.) in den Blick genommen.}, language = {de} } @article{BinczykStaebelSandrieseretal.2023, author = {Binczyk, Sarah and Staebel, Cornelia and Sandrieser, Patricia and Jung, Stefanie}, title = {Du und Ich: Grenzenlose Kommunikation - Entwicklung eines Informationsflyers zur Bimodalen Bilingualit{\"a}t anhand semistrukturierter Expert*innen-Interviews}, series = {Spektrum Patholinguistik 16}, journal = {Spektrum Patholinguistik 16}, number = {16}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-559-0}, issn = {1866-9433}, doi = {10.25932/publishup-61355}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-613551}, pages = {175 -- 183}, year = {2023}, abstract = {Entgegen noch immer bestehender Annahmen schr{\"a}nkt Geb{\"a}rdensprache, wenn sie fr{\"u}hzeitig und uneingeschr{\"a}nkt zug{\"a}nglich ist, den Lautspracherwerb nicht ein; sie kann diesen sogar erleichtern. Bimodale Bilingualit{\"a}t beschreibt ein „Sowohl-als-auch" von Lautsprache und der visuell-gestischen Geb{\"a}rdensprache in der Sprachentwicklung h{\"o}rbeeintr{\"a}chtigter Kinder. F{\"u}r h{\"o}rende Eltern von h{\"o}rbeeintr{\"a}chtigten Kindern in Deutschland ist der Zugang zu Informationen {\"u}ber bimodale Bilingualit{\"a}t, d. h. deutsche Lautsprache und Deutsche Geb{\"a}rdensprache (DGS), erschwert. Daher wurde in dieser Arbeit auf Grundlage einer umfassenden Literaturrecherche, Hospitationen und der qualitativen Analyse semi-strukturierter Expert*innen-Interviews ein Informationsflyer konzipiert. Dieser stellt erste wichtige Informationen bereit und zeigt konkrete regionale Anlauf- und Kontaktstellen auf. Ziel ist es, betroffenen Familien die bimodale Bilingualit{\"a}t als alternativen Kommunikationsweg vorzustellen und somit Kindern von Geburt an die M{\"o}glichkeit der grenzenlosen Kommunikation zu erm{\"o}glichen.}, language = {de} } @book{BinderBembnistaMettenbergeretal.2023, author = {Binder, Julia and Bembnista, Kamil and Mettenberger, Tobias and Ulrich, Peter and Witting, Antje and Zeißig, Hanna and Zscherneck, Julia}, title = {Digitale Pioniere als Schl{\"u}sselakteure l{\"a}ndlicher Governance}, series = {KWI-Schriften}, journal = {KWI-Schriften}, number = {14}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-571-2}, issn = {1867-951X}, doi = {10.25932/publishup-61338}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-613384}, publisher = {Universit{\"a}t Potsdam}, pages = {124}, year = {2023}, abstract = {Zentrale Aufgaben von Kommunen in Deutschland umfassen die Gew{\"a}hrleistung der Daseinsvorsorge, des {\"o}ffentlichen Verkehrs, Wirtschaftsf{\"o}rderung, Zugang zu ausreichender Breitbandinfrastruktur, gesundheitliche und soziale Betreuung und Zugang zu kulturellem Leben. Kommunen in l{\"a}ndlichen Regionen stehen gleichzeitig vor zahlreichen gesellschaftlichen, wirtschaftlichen, sozialen und politischen Herausforderungen. Neuartige Ans{\"a}tze und innovative Akteure und Netzwerke werden daher im Kontext der Schaffung von sozialen oder digitalen Innovationen von den Kommunen als Antwort auf diese Herausforderungen begr{\"u}ßt, stoßen aber auch teilweise auf Barrieren. In dem Sammelband wird von den Herausgebenden die Frage untersucht, wie sich digitale Vorreiter:innen, die wir „Digitale Pioniere" nennen, in l{\"a}ndlichen Regionen vernetzen, um einen positiven Beitrag zur l{\"a}ndlichen Regionalentwicklung zu leisten. Dabei liegt der Fokus haupts{\"a}chlich auf der kommunalpolitischen Ebene und auf der Frage, wie Digitale Pioniere als Schl{\"u}sselakteure in der l{\"a}ndlichen Governance agieren. Die Forschungsergebnisse kommunaler Governance sind anhand l{\"a}ndlicher Untersuchungsteilregionen in Baden-W{\"u}rttemberg und Mecklenburg-Vorpommern im Rahmen des Forschungsprojekts „DigPion - Digitale Pioniere in der l{\"a}ndlichen Regionalentwicklung" (2020-2023) erarbeitet worden. Abschließend wird {\"u}berpr{\"u}ft, wie die Erkenntnisse und erarbeiteten Handlungsempfehlungen f{\"u}r das Bundesland Brandenburg zu {\"u}bertragen sind.}, language = {de} } @article{GlowinskiAutenrieth2023, author = {Glowinski, Ingrid and Autenrieth, Marijke}, title = {Eigene Forschung im Labor, um naturwissenschaftliche Erkenntnisgewinnung kompetent unterrichten zu k{\"o}nnen?}, series = {PSI-Potsdam: Ergebnisbericht zu den Aktivit{\"a}ten im Rahmen der Qualit{\"a}tsoffensive Lehrerbildung (2019-2023) (Potsdamer Beitr{\"a}ge zur Lehrerbildung und Bildungsforschung ; 3)}, journal = {PSI-Potsdam: Ergebnisbericht zu den Aktivit{\"a}ten im Rahmen der Qualit{\"a}tsoffensive Lehrerbildung (2019-2023) (Potsdamer Beitr{\"a}ge zur Lehrerbildung und Bildungsforschung ; 3)}, number = {3}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-568-2}, issn = {2626-3556}, doi = {10.25932/publishup-61792}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-617922}, pages = {273 -- 293}, year = {2023}, abstract = {Im Rahmen des PSI-Projekts wurde eine Lehrveranstaltung konzipiert, die Lehramtsstudierenden einen vertieften Einblick sowohl in den Ablauf von Forschung als auch eine Bearbeitung einer eigenen experimentellen Forschungsaufgabe erm{\"o}glichen soll. Anlass waren die Ber{\"u}cksichtigung eines „Wissens {\"u}ber Erkenntnisgewinnung in der Disziplin" im Modell des „Erweiterten Fachwissens f{\"u}r den schulischen Kontext" (PSI) sowie Erkenntnisse empirischer Studien, die die Relevanz eigener Forschungserfahrung f{\"u}r das Unterrichten naturwissenschaftlicher Erkenntnisgewinnungsprozesse zeigen. Hier stellen wir eine neue Lehrveranstaltung (4 SWS) vor, die den angehenden Lehrkr{\"a}ften Forschungserfahrung erm{\"o}glicht (Seminar und Praktikum). Die Lehrveranstaltung vermittelt Einblicke in Forschung und die „Natur der Naturwissenschaften", erm{\"o}glicht das Durchf{\"u}hren eigener wissenschaftlicher und schulrelevanter Experimente und bietet eine angemessene Reflexion {\"u}ber die verschiedenen Kurselemente. Die Evaluationsergebnisse sind {\"u}berwiegend positiv, zeigen aber auch, dass f{\"u}r die Studierenden die wahrgenommene Schulrelevanz und die fachdidaktischen Aspekte ein wichtiges Kriterium f{\"u}r die positive Bewertung sind.}, language = {de} } @article{StemmeHoppe2023, author = {Stemme, Jonas and Hoppe, Uwe}, title = {Evolution{\"a}re Entwicklung eines Inverted Classroom Formats unter Ber{\"u}cksichtigung des Student Engagement}, series = {Hochschuldidaktik Informatik HDI 2021 (Commentarii informaticae didacticae)}, journal = {Hochschuldidaktik Informatik HDI 2021 (Commentarii informaticae didacticae)}, number = {13}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-548-4}, issn = {1868-0844}, doi = {10.25932/publishup-61601}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-616016}, pages = {231 -- 253}, year = {2023}, abstract = {1,7 Milliarden Studierende waren von der ad hoc Umstellung der Lehre an Hochschulen durch den Ausbruch der COVID-19-Pandemie im Jahr 2020 betroffen. Innerhalb k{\"u}rzester Zeit mussten Lehr- und Lernformate digital transformiert werden, um ein Distanzlernen f{\"u}r Studierende {\"u}berall auf der Welt zu erm{\"o}glichen. Etwa zwei Jahre sp{\"a}ter k{\"o}nnen die Erfahrungen aus der Entwicklung von digitalen Lehr- und Lernformaten dazu genutzt werden, um Blended Learning Formate zielgerecht weiterzuentwickeln. Die nachfolgende Untersuchung zeigt einerseits einen Prozess der evolution{\"a}ren Entwicklung am Beispiel eines Inverted Classrooms auf. Andererseits wird das Modell des Student Engagement genutzt, um die Einflussfaktoren, im Speziellen die des Verhaltens, zielgerecht anzupassen und so die Outcomes in Form von besseren Noten und einer erh{\"o}hten Zufriedenheit bei den Studierenden zu erzielen. Grundlage f{\"u}r die Untersuchung bildet die Lehrveranstaltung Projektmanagement, die an einer deutschen Hochschule durchgef{\"u}hrt wird.}, language = {de} } @article{Wienfort2023, author = {Wienfort, Monika}, title = {Die Preußische Seehandlung im Lexikon im 19. Jahrhundert}, series = {Die Preußische Seehandlung zwischen Markt, Staat und Kultur : 40 Jahre Stiftung Preußische Seehandlung}, journal = {Die Preußische Seehandlung zwischen Markt, Staat und Kultur : 40 Jahre Stiftung Preußische Seehandlung}, editor = {Wienfort, Monika}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-562-0}, doi = {10.25932/publishup-59990}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-599907}, pages = {129 -- 150}, year = {2023}, abstract = {Im 19. Jahrhundert waren Konversationslexika, wie der Name schon andeutet, dazu gedacht, die Konversation in Salon und Vereinen mit Informationen zu bereichern. In den einzelnen Artikeln wurde auf Pr{\"a}zision, Genauigkeit und {\"U}berpr{\"u}fbarkeit gesetzt, um der Leserschaft auch ein eigenes Urteil zu erm{\"o}glichen. Die „Seehandlungs-Societ{\"a}t in Preußen" oder „Seehandlung, preußische", wie sie in deutschen Lexika vorkommt, wandelte sich im 19. Jahrhundert zur Staatsbank. In der ersten H{\"a}lfte des 19. Jahrhunderts fielen die Urteile der Lexika meist ablehnend aus: Die Seehandlung erschien als eine wirtschaftspolitisch katastrophale Fehlentwicklung. Eine besondere Rolle spielte der Pr{\"a}sident Christian (von) Rother, der die Seehandlung zum selbst{\"a}ndigen Unternehmen gemacht hatte. Der Wandel der allgemeinen Lexika in der zweiten H{\"a}lfte des 19. Jahrhunderts ver{\"a}nderte auch die Sicht auf die Seehandlung. Die Gesch{\"a}fte der Bank wurden positiv hervorgehoben, die Beurteilungen verwiesen auf Statistiken und Bilanzen. Der Fokus r{\"u}ckte von den leitenden Personen der Seehandlung hin zum Kampf um Handelsmonopole und den preußischen Landtag als {\"o}ffentlichem Forum. Das vernichtende Urteil der ersten H{\"a}lfte des 19. Jahrhunderts war einer differenzierten Bewertung der Bankent{\"a}tigkeit gewichen.}, language = {de} } @article{Grahovac2023, author = {Grahovac, Tena}, title = {Die Basalganglien bei der Lautst{\"a}rkeverarbeitung}, series = {Spektrum Patholinguistik 16}, journal = {Spektrum Patholinguistik 16}, number = {16}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-559-0}, issn = {1866-9433}, doi = {10.25932/publishup-61359}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-613599}, pages = {219 -- 234}, year = {2023}, abstract = {Der neurodegenerativen Erkrankung Morbus Parkinson (MP) liegt der Zerfall von Neuronen in den Basalganglien (BG) zugrunde, der mitunter zu kognitiv-sprachlichen Einschr{\"a}nkungen f{\"u}hrt. Dies betrifft beispielsweise die Lautst{\"a}rkeproduktion und -wahrnehmung. Betroffene sprechen signifikant leiser und weisen eine verringerte Wahrnehmungsspanne f{\"u}r Lautst{\"a}rke auf. Dieses Wahrnehmungsdefizit und die Tatsache, dass die BG die betroffene neurologische Struktur bei MP sind, l{\"a}sst eine Beteiligung dieser bei der Lautst{\"a}rkeverarbeitung von Gesunden vermuten. Um die Rolle der BG bei der Lautst{\"a}rkeverarbeitung zu untersuchen, wurde eine generalisierte lineare Modellanalyse durchgef{\"u}hrt. Anhand von fMRT-Daten von gesunden Proband*innen, erhoben von Erb et al. (2020), wurde nach linearen Regressionen zwischen den pr{\"a}sentierten Lautst{\"a}rkewerten und dem BOLD-Signal in acht BG-Regionen gesucht. Hierf{\"u}r wurden Daten von 63 Proband*innen im Alter zwischen 18 und 78 Jahren (Durchschnitt: 43,4 Jahre) genutzt. Im linken und rechten Putamen angrenzend zum Globus pallidus pars externa war eine positive lineare Regression beobachtbar. Eine negative lineare Regression zeigte sich im Kopf des Nucleus caudatus beider Hemisph{\"a}ren. Teile der BG scheinen somit m{\"o}glicherweise eine Rolle bei der Verarbeitung von Lautst{\"a}rke zu spielen. In Bezug auf MP besteht die M{\"o}glichkeit, dass ihre neuronale Degeneration miturs{\"a}chlich f{\"u}r die Wahrnehmungseinschr{\"a}nkungen ist. Dies sowie der Einfluss dieses rezeptiven Lautst{\"a}rkedefizits auf die produktiven sprachlichen Einschr{\"a}nkungen sollten Gegenstand zuk{\"u}nftiger Untersuchungen sein. Es ist gut m{\"o}glich, dass die Ursache der produktiven Lautst{\"a}rkedefizite nicht motorischer, sondern rezeptiver Natur ist. Dies h{\"a}tte einen großen Einfluss auf k{\"u}nftige sprachtherapeutische Konzepte bei der Behandlung produktiver Sprachst{\"o}rungen bei MP.}, language = {de} } @article{Hannesen2023, author = {Hannesen, Hans Gerhard}, title = {Neubeginn: Wie aus der K{\"o}niglichen Seehandlungs-Societ{\"a}t und Preußischen Staatsbank die Kultur und Wissenschaft f{\"o}rdernde Stiftung Preußische Seehandlung wurde}, series = {Die Preußische Seehandlung zwischen Markt, Staat und Kultur : 40 Jahre Stiftung Preußische Seehandlung}, journal = {Die Preußische Seehandlung zwischen Markt, Staat und Kultur : 40 Jahre Stiftung Preußische Seehandlung}, editor = {Wienfort, Monika}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-562-0}, doi = {10.25932/publishup-59991}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-599911}, pages = {151 -- 165}, year = {2023}, abstract = {Die Geschichte der Preußischen Seehandlung als Institut f{\"u}r Handels- und Gewerbef{\"o}rderung ist nur partiell erforscht. Vor allem f{\"u}r die Jahrzehnte nach 1870, als die Seehandlung zur preußischen Staatsbank wurde, bleibt vieles unbekannt. Mit Alliiertem Kontrollratsbeschluss vom 15. Februar 1947 wurden das Land Preußen und auch die Seehandlung aufgel{\"o}st. Die Abwicklung der Gesch{\"a}fte dauerte bis 1983. Mit dem Restverm{\"o}gen wurde die heute existierende Stiftung gegr{\"u}ndet, die sich der F{\"o}rderung von Wissenschaft und Forschung, Kunst und Kultur widmet. Die von der Stiftung gef{\"o}rderten Aktivit{\"a}ten reichen von Wissenschafts- und Literaturstipendien {\"u}ber den Ankauf von Nachl{\"a}ssen und Sammlungen bis hin zu Kulturpreisen, v.a. dem Theaterpreis Berlin.}, language = {de} } @article{Redecker2023, author = {Redecker, Anke}, title = {Forschendes Lernen als Erfahrungsreflexion}, series = {Reflexion in der Lehrkr{\"a}ftebildung: Empirisch - Phasen{\"u}bergreifend - Interdisziplin{\"a}r (Potsdamer Beitr{\"a}ge zur Lehrerbildung und Bildungsforschung ; 4)}, journal = {Reflexion in der Lehrkr{\"a}ftebildung: Empirisch - Phasen{\"u}bergreifend - Interdisziplin{\"a}r (Potsdamer Beitr{\"a}ge zur Lehrerbildung und Bildungsforschung ; 4)}, number = {4}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-566-8}, issn = {2626-3556}, doi = {10.25932/publishup-61911}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-619113}, pages = {69 -- 75}, year = {2023}, abstract = {Der Beitrag fragt nach einer Bildungsrelevanz Forschenden Lernens in der Lehrkr{\"a}ftebildung und richtet diese auf ein sinn- und verantwortungsvolles Sich-ins-Verh{\"a}ltnis-Setzen zu unterrichtsrelevanten Szenarien aus. Damit ersch{\"o}pft sich Forschendes Lernen nicht in datenfokussierten Untersuchungen, sondern leistet einen Beitrag zum Aufbau einer Lehrer:innenpers{\"o}nlichkeit, die sich in transformatorischen Bildungsprozessen dem Wagnis einer Konfrontation mit Kontingenz aussetzt und durch Irritation des Erfahrungshorizonts Unterrichtssituationen differenziert und nachhaltig reflektiert. Pl{\"a}diert wird f{\"u}r eine Situationssensibilit{\"a}t jenseits des vermeintlichen In-den-Begriff-Bekommens durch Datafizierung und schematische Verhaltensmuster.}, language = {de} } @techreport{KalkuhlFranksGruneretal.2023, type = {Working Paper}, author = {Kalkuhl, Matthias and Franks, Max and Gruner, Friedemann and Lessmann, Kai and Edenhofer, Ottmar}, title = {Pigou's Advice and Sisyphus' Warning}, series = {CEPA Discussion Papers}, journal = {CEPA Discussion Papers}, number = {62}, issn = {2628-653X}, doi = {10.25932/publishup-57588}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-575882}, pages = {66}, year = {2023}, abstract = {Carbon dioxide removal from the atmosphere is becoming an important option to achieve net zero climate targets. This paper develops a welfare and public economics perspective on optimal policies for carbon removal and storage in non-permanent sinks like forests, soil, oceans, wood products or chemical products. We derive a new metric for the valuation of non-permanent carbon storage, the social cost of carbon removal (SCC-R), which embeds also the conventional social cost of carbon emissions. We show that the contribution of CDR is to create new carbon sinks that should be used to reduce transition costs, even if the stored carbon is released to the atmosphere eventually. Importantly, CDR does not raise the ambition of optimal temperature levels unless initial atmospheric carbon stocks are excessively high. For high initial atmospheric carbon stocks, CDR allows to reduce the optimal temperature below initial levels. Finally, we characterize three different policy regimes that ensure an optimal deployment of carbon removal: downstream carbon pricing, upstream carbon pricing, and carbon storage pricing. The policy regimes differ in their informational and institutional requirements regarding monitoring, liability and financing.}, language = {en} } @techreport{BaganzdeTeresaLinggetal.2023, type = {Working Paper}, author = {Baganz, Melissa and de Teresa, Aurelia G{\´o}mez and Lingg, Rosana T. and Montijo, Yuriditzi Pascacio}, title = {A critical assessment on National Action Plans}, series = {Staat, Recht und Politik - Forschungs- und Diskussionspapiere}, journal = {Staat, Recht und Politik - Forschungs- und Diskussionspapiere}, number = {13}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {2509-6974}, doi = {10.25932/publishup-57679}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-576797}, pages = {11}, year = {2023}, abstract = {National Action Plans (NAPs) have been increas-ingly adopted world-wide after the Vienna Dec-laration in 1993, where it was urged to consider the improvement and promotion of Human Rights. In this paper, we discuss their usefulness and success by analysing the challenges present-ed during NAP processes as well as the benefits this set of actions entails: The challenges for their implementation outweigh its actual benefits. Nevertheless, NAPs have great potential. Based on new research, we elaborate a set of recom-mendations for improving the design and imple-mentation of national action planning. In order to effectively bring NAP into practice, we consider it crucial to plan and analyse every state local circumstances in detail. The latter is important, since the implementation of a concrete set of actions is intended to directly transform and improve the local living conditions of the people. In a long-term perspective, we defend the benefit of NAP's implementation for complying obliga-tions set up by HR treaties.}, language = {en} } @misc{CaspariCzubaikoStilletal.2023, author = {Caspari, Catharina and Czubaiko, Achim and Still, Melina and Valc, Jakub and Mienert, Navin and Buser, Andreas and Weiß, Norman}, title = {MenschenRechtsMagazin : MRM ; Informationen, Meinungen, Analysen}, volume = {28}, number = {1}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {2941-1149}, doi = {10.25932/publishup-58477}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-584771}, pages = {87}, year = {2023}, abstract = {Aus dem Inhalt: - Menschenrechtsklagen vor Zivilgerichten in Deutschland - Eine Bestandsaufnahme der methodisch-rechtspolitischen Ans{\"a}tze im Internationalen Privatrecht (IPR) - Das Vorsorgeprinzip - ein untersch{\"a}tzter Bestandteil menschenrechtlicher Klimaklagen? - Der Menschenrechtsausschuss der Vereinten Nationen und die Klimakrise - Die Entscheidung Billy et al. gegen Australien und ihr Beitrag zur „Begr{\"u}nung" des Menschenrechtsschutzes}, language = {de} }