@article{HartmannHelbigBiernackaetal.2019, author = {Hartmann, Niklas K. and Helbig, Kerstin and Biernacka, Katarzyna and Buchholz, Petra and Dolzycka, Dominika and Hartmann, Thomas and Hiemenz, Bea and Jacob, Boris and Kuberek, Monika and Weiß, Nadin and Dreyer, Malte}, title = {L{\"o}sungen und Leitf{\"a}den f{\"u}r das institutionelle Forschungsdatenmanagement}, series = {o-bib Das offene Bibliotheksjournal}, volume = {6}, journal = {o-bib Das offene Bibliotheksjournal}, number = {3}, publisher = {VDB - Verein Deutscher Bibliothekarinnen und Bibliothekare e.V.}, address = {Erlangen}, issn = {2363-9814}, doi = {10.5282/o-bib/2019H3S21-39}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-472370}, pages = {21 -- 39}, year = {2019}, abstract = {Hochschulen und deren Zentraleinrichtungen besch{\"a}ftigen sich zunehmend mit dem Thema Forschungsdatenmanagement (FDM), um ihre Forschenden ad{\"a}quat zu unterst{\"u}tzen. Nicht zuletzt aufgrund neuer Verlags- und F{\"o}rderanforderungen w{\"u}nschen sich Forschende Beratung und Orientierung, wie sie mit ihren Forschungsdaten umgehen sollen. Damit Hochschulen schnell und nachhaltig L{\"o}sungen zum institutionellen FDM etablieren k{\"o}nnen, haben f{\"u}nf Berliner und Brandenburger Universit{\"a}ten im gemeinsamen Verbundvorhaben FDMentor mit F{\"o}rderung des Bundesministeriums f{\"u}r Bildung und Forschung (BMBF) entsprechende Leitf{\"a}den und Werkzeuge erarbeitet. Die innerhalb von zwei Jahren (2017-2019) entstandenen Ergebnisse in den Bereichen Strategieentwicklung, Forschungsdaten-Policy, rechtliche Aspekte und Kompetenzausbau finden {\"u}ber das Verbundprojekt hinaus ihre Anwendung.}, language = {de} } @misc{Pilarczyk2019, type = {Master Thesis}, author = {Pilarczyk, Paulina}, title = {Der Einsatz lateinamerikanischer Telenovelas im Spanischunterricht am Beispiel von Yo soy Betty, la fea}, doi = {10.25932/publishup-43100}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-431006}, school = {Universit{\"a}t Potsdam}, pages = {114}, year = {2019}, abstract = {Das Ziel dieser Arbeit ist es, das Potenzial lateinamerikanischer Telenovelas als audiovisuelle Medien f{\"u}r den Fremdsprachenunterricht Spanisch und deren Eignung f{\"u}r die F{\"o}rderung der funktionalen kommunikativen Kompetenz, der interkulturellen kommunikativen Kompetenz und der Medienkompetenz aufzuzeigen. Der Schwerpunkt dieser Untersuchung liegt dabei im lateinamerikanischen Spanisch und der lateinamerikanischen Kultur. Zu diesem Zweck werden ausgew{\"a}hlte Szenen aus der weltweit popul{\"a}rsten kolumbianischen Telenovela Yo soy Betty, la fea analysiert. Es werden zwei Szenen aus dem Arbeitsleben und zwei Szenen aus dem Privatleben in Hinblick auf die funktionale kommunikative Kompetenz untersucht. Des Weiteren werden die kulturellen Elemente in dieser Telenovela w{\"a}hrend der Analyse geschildert. Schließlich wird die Telenovela mit dem Fokus auf die Medienkompetenz, daher auf die Eigenschaften und Konventionen des Genres Telenovela, hin untersucht.}, language = {de} } @misc{AbbasVranicHoffmannetal.2019, author = {Abbas, Ioana M. and Vranic, Marija and Hoffmann, Holger and El-Khatib, Ahmed H. and Montes-Bay{\´o}n, Mar{\´i}a and M{\"o}ller, Heiko Michael and Weller, Michael G.}, title = {Investigations of the Copper Peptide Hepcidin-25 by LC-MS/MS and NMR⁺}, series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, number = {701}, issn = {1866-8372}, doi = {10.25932/publishup-42792}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-427926}, year = {2019}, abstract = {Hepcidin-25 was identified as themain iron regulator in the human body, and it by binds to the sole iron-exporter ferroportin. Studies showed that the N-terminus of hepcidin is responsible for this interaction, the same N-terminus that encompasses a small copper(II) binding site known as the ATCUN (amino-terminal Cu(II)- and Ni(II)-binding) motif. Interestingly, this copper-binding property is largely ignored in most papers dealing with hepcidin-25. In this context, detailed investigations of the complex formed between hepcidin-25 and copper could reveal insight into its biological role. The present work focuses on metal-bound hepcidin-25 that can be considered the biologically active form. The first part is devoted to the reversed-phase chromatographic separation of copper-bound and copper-free hepcidin-25 achieved by applying basic mobile phases containing 0.1\% ammonia. Further, mass spectrometry (tandemmass spectrometry (MS/MS), high-resolutionmass spectrometry (HRMS)) and nuclear magnetic resonance (NMR) spectroscopy were employed to characterize the copper-peptide. Lastly, a three-dimensional (3D)model of hepcidin-25with bound copper(II) is presented. The identification of metal complexes and potential isoforms and isomers, from which the latter usually are left undetected by mass spectrometry, led to the conclusion that complementary analytical methods are needed to characterize a peptide calibrant or referencematerial comprehensively. Quantitative nuclear magnetic resonance (qNMR), inductively-coupled plasma mass spectrometry (ICP-MS), ion-mobility spectrometry (IMS) and chiral amino acid analysis (AAA) should be considered among others.}, language = {en} } @techreport{SultanowKochCox2019, author = {Sultanow, Eldar and Koch, Christian and Cox, Sean}, title = {Collatz Sequences in the Light of Graph Theory}, edition = {2nd version}, doi = {10.25932/publishup-43741}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-437416}, pages = {21}, year = {2019}, abstract = {The Collatz conjecture is a number theoretical problem, which has puzzled countless researchers using myriad approaches. Presently, there are scarcely any methodologies to describe and treat the problem from the perspective of the Algebraic Theory of Automata. Such an approach is promising with respect to facilitating the comprehension of the Collatz sequence's "mechanics". The systematic technique of a state machine is both simpler and can fully be described by the use of algebraic means. The current gap in research forms the motivation behind the present contribution. The present authors are convinced that exploring the Collatz conjecture in an algebraic manner, relying on findings and fundamentals of Graph Theory and Automata Theory, will simplify the problem as a whole.}, language = {en} } @techreport{SultanowKochCox2019, author = {Sultanow, Eldar and Koch, Christian and Cox, Sean}, title = {Collatz Sequences in the Light of Graph Theory}, doi = {10.25932/publishup-43008}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-430089}, pages = {15}, year = {2019}, abstract = {The Collatz conjecture is a number theoretical problem, which has puzzled countless researchers using myriad approaches. Presently, there are scarcely any methodologies to describe and treat the problem from the perspective of the Algebraic Theory of Automata. Such an approach is promising with respect to facilitating the comprehension of the Collatz sequences "mechanics". The systematic technique of a state machine is both simpler and can fully be described by the use of algebraic means. The current gap in research forms the motivation behind the present contribution. The present authors are convinced that exploring the Collatz conjecture in an algebraic manner, relying on findings and fundamentals of Graph Theory and Automata Theory, will simplify the problem as a whole.}, language = {en} } @misc{KayhanWagnerMeyerO’Reillyetal.2019, author = {Kayhan Wagner, Ezgi and Meyer, Marlene and O'Reilly, J.X. and Hunnius, Sabine and Bekkering, Harold}, title = {Nine-month-old infants update their predictive models of a changing environment}, series = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe}, number = {577}, issn = {1866-8364}, doi = {10.25932/publishup-43784}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-437844}, pages = {8}, year = {2019}, abstract = {Humans generate internal models of their environment to predict events in the world. As the environments change, our brains adjust to these changes by updating their internal models. Here, we investigated whether and how 9-month-old infants differentially update their models to represent a dynamic environment. Infants observed a predictable sequence of stimuli, which were interrupted by two types of cues. Following the update cue, the pattern was altered, thus, infants were expected to update their predictions for the upcoming stimuli. Because the pattern remained the same after the no-update cue, no subsequent updating was required. Infants showed an amplified negative central (Nc) response when the predictable sequence was interrupted. Late components such as the PSW were also evoked in response to unexpected stimuli; however, we found no evidence for a differential response to the informational value of surprising cues at later stages of processing. Infants rather learned that surprising cues always signal a change in the environment that requires updating. Interestingly, infants responded with an amplified neural response to the absence of an expected change, suggesting a top-down modulation of early sensory processing in infants. Our findings corroborate emerging evidence showing that infants build predictive models early in life.}, language = {en} } @article{Klein2019, author = {Klein, Eckart}, title = {The Founding of the Human Rights Centre in 1994}, series = {MenschenRechtsMagazin : MRM ; Informationen, Meinungen, Analysen}, volume = {24}, journal = {MenschenRechtsMagazin : MRM ; Informationen, Meinungen, Analysen}, number = {1/2}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {1434-2820}, doi = {10.25932/publishup-43863}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-438633}, pages = {5 -- 11}, year = {2019}, language = {en} } @article{WelkeFrank2019, author = {Welke, Lisa-Marie and Frank, Ulrike}, title = {Pilotfragebogenstudie zur praktischen Umsetzung und Koordination des Trachealkan{\"u}len-Managements in Berlin und Brandenburg}, series = {Spektrum Patholinguistik}, journal = {Spektrum Patholinguistik}, number = {11}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-448-7}, issn = {1866-9085}, doi = {10.25932/publishup-43778}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-437780}, pages = {115 -- 129}, year = {2019}, language = {de} } @article{KrugStuebnerHoffmannetal.2019, author = {Krug, Ragna and St{\"u}bner, Hanna and Hoffmann, Sophie and Heide, Judith}, title = {Die Behandlung dysprosodischer Symptome bei Sprechapraxie}, series = {Spektrum Patholinguistik}, journal = {Spektrum Patholinguistik}, number = {11}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-448-7}, issn = {1866-9085}, doi = {10.25932/publishup-43780}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-437808}, pages = {135 -- 142}, year = {2019}, language = {de} } @phdthesis{Nikaj2019, author = {Nikaj, Adriatik}, title = {Restful choreographies}, doi = {10.25932/publishup-43890}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-438903}, school = {Universit{\"a}t Potsdam}, pages = {xix, 146}, year = {2019}, abstract = {Business process management has become a key instrument to organize work as many companies represent their operations in business process models. Recently, business process choreography diagrams have been introduced as part of the Business Process Model and Notation standard to represent interactions between business processes, run by different partners. When it comes to the interactions between services on the Web, Representational State Transfer (REST) is one of the primary architectural styles employed by web services today. Ideally, the RESTful interactions between participants should implement the interactions defined at the business choreography level. The problem, however, is the conceptual gap between the business process choreography diagrams and RESTful interactions. Choreography diagrams, on the one hand, are modeled from business domain experts with the purpose of capturing, communicating and, ideally, driving the business interactions. RESTful interactions, on the other hand, depend on RESTful interfaces that are designed by web engineers with the purpose of facilitating the interaction between participants on the internet. In most cases however, business domain experts are unaware of the technology behind web service interfaces and web engineers tend to overlook the overall business goals of web services. While there is considerable work on using process models during process implementation, there is little work on using choreography models to implement interactions between business processes. This thesis addresses this research gap by raising the following research question: How to close the conceptual gap between business process choreographies and RESTful interactions? This thesis offers several research contributions that jointly answer the research question. The main research contribution is the design of a language that captures RESTful interactions between participants---RESTful choreography modeling language. Formal completeness properties (with respect to REST) are introduced to validate its instances, called RESTful choreographies. A systematic semi-automatic method for deriving RESTful choreographies from business process choreographies is proposed. The method employs natural language processing techniques to translate business interactions into RESTful interactions. The effectiveness of the approach is shown by developing a prototypical tool that evaluates the derivation method over a large number of choreography models. In addition, the thesis proposes solutions towards implementing RESTful choreographies. In particular, two RESTful service specifications are introduced for aiding, respectively, the execution of choreographies' exclusive gateways and the guidance of RESTful interactions.}, language = {en} } @misc{RungeGrosse2019, author = {Runge, Alexandra and Grosse, Guido}, title = {Comparing Spectral Characteristics of Landsat-8 and Sentinel-2 Same-Day Data for Arctic-Boreal Regions}, series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, number = {767}, issn = {1866-8372}, doi = {10.25932/publishup-43866}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-438660}, pages = {29}, year = {2019}, abstract = {The Arctic-Boreal regions experience strong changes of air temperature and precipitation regimes, which affect the thermal state of the permafrost. This results in widespread permafrost-thaw disturbances, some unfolding slowly and over long periods, others occurring rapidly and abruptly. Despite optical remote sensing offering a variety of techniques to assess and monitor landscape changes, a persistent cloud cover decreases the amount of usable images considerably. However, combining data from multiple platforms promises to increase the number of images drastically. We therefore assess the comparability of Landsat-8 and Sentinel-2 imagery and the possibility to use both Landsat and Sentinel-2 images together in time series analyses, achieving a temporally-dense data coverage in Arctic-Boreal regions. We determined overlapping same-day acquisitions of Landsat-8 and Sentinel-2 images for three representative study sites in Eastern Siberia. We then compared the Landsat-8 and Sentinel-2 pixel-pairs, downscaled to 60 m, of corresponding bands and derived the ordinary least squares regression for every band combination. The acquired coefficients were used for spectral bandpass adjustment between the two sensors. The spectral band comparisons showed an overall good fit between Landsat-8 and Sentinel-2 images already. The ordinary least squares regression analyses underline the generally good spectral fit with intercept values between 0.0031 and 0.056 and slope values between 0.531 and 0.877. A spectral comparison after spectral bandpass adjustment of Sentinel-2 values to Landsat-8 shows a nearly perfect alignment between the same-day images. The spectral band adjustment succeeds in adjusting Sentinel-2 spectral values to Landsat-8 very well in Eastern Siberian Arctic-Boreal landscapes. After spectral adjustment, Landsat and Sentinel-2 data can be used to create temporally-dense time series and be applied to assess permafrost landscape changes in Eastern Siberia. Remaining differences between the sensors can be attributed to several factors including heterogeneous terrain, poor cloud and cloud shadow masking, and mixed pixels.}, language = {en} } @misc{DahmaniLudwigChiantia2019, author = {Dahmani, Ismail and Ludwig, Kai and Chiantia, Salvatore}, title = {Influenza A matrix protein M1 induces lipid membrane deformation via protein multimerization}, series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, number = {768}, issn = {1866-8372}, doi = {10.25932/publishup-43868}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-438689}, pages = {16}, year = {2019}, abstract = {The matrix protein M1 of the Influenza A virus (IAV) is supposed to mediate viral assembly and budding at the plasma membrane (PM) of infected cells. In order for a new viral particle to form, the PM lipid bilayer has to bend into a vesicle toward the extracellular side. Studies in cellular models have proposed that different viral proteins might be responsible for inducing membrane curvature in this context (including M1), but a clear consensus has not been reached. In the present study, we use a combination of fluorescence microscopy, cryogenic transmission electron microscopy (cryo-TEM), cryo-electron tomography (cryo-ET) and scanning fluorescence correlation spectroscopy (sFCS) to investigate M1-induced membrane deformation in biophysical models of the PM. Our results indicate that M1 is indeed able to cause membrane curvature in lipid bilayers containing negatively charged lipids, in the absence of other viral components. Furthermore, we prove that protein binding is not sufficient to induce membrane restructuring. Rather, it appears that stable M1-M1 interactions and multimer formation are required in order to alter the bilayer three-dimensional structure, through the formation of a protein scaffold. Finally, our results suggest that, in a physiological context,M1-induced membrane deformation might be modulated by the initial bilayer curvature and the lateral organization of membrane components (i.e. the presence of lipid domains).}, language = {en} } @phdthesis{BarqueroPipin2019, author = {Barquero Pip{\´i}n, Antonio Carlos}, title = {Lengua, cultura, interculturalidad}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-480-7}, doi = {10.25932/publishup-43902}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-439023}, school = {Universit{\"a}t Potsdam}, pages = {429}, year = {2019}, abstract = {Ohne Pragmatik w{\"a}re Kommunikation nicht m{\"o}glich, da wir sprachliche Aussagen nicht interpretieren k{\"o}nnten. F{\"u}r jeden Lernenden einer Sprache, die er nicht beherrscht, reicht es nicht aus, sprachlich kompetent zu sein, da der Zweck der Kommunikation darin besteht, mit anderen Menschen und in bestimmten Kontexten zu kommunizieren. Nur eine Lehre, die es erm{\"o}glicht, Aussagen zur Durchf{\"u}hrung von Sprachhandlungen zu erstellen und zu verstehen und die f{\"u}r einen bestimmten Kontext am besten geeigneten auszuw{\"a}hlen, kann sich als effizient erweisen. Die hier vorgestellte Arbeit zielt darauf ab, der wissenschaftlichen Gemeinschaft und insbesondere denjenigen, die direkt und indirekt am Unterrichtsprozess beteiligt sind, das Konzept der verbalen Pragmatik bekannt zu machen und es anderen wie Grammatik, Kultur oder Interkulturalit{\"a}t gegen{\"u}ber zu stellen. Ferner wendet sie sich der Frage zu, wie man auf die Bedeutung und die dringende Notwendigkeit aufmerksam macht, Pragmatik als relevante Disziplin im Kommunikationsprozess zu etablieren; dabei wird insbesondere auf ihre systematische Einbeziehung in Lehrb{\"u}chern f{\"u}r Spanisch als Fremdsprache, die f{\"u}r den schulischen Kontext konzipiert wurden, abgestellt. Dazu werden das Vorhandensein pragmatischer Elemente und die F{\"o}rderung pragmatischer Kompetenz in Lehrb{\"u}chern f{\"u}r Anf{\"a}nger sowie ihre Relevanz bei der Festlegung von Inhalten, Fortschrittsart und Methodik untersucht.}, language = {es} } @misc{PalyulinBlackburnLomholtetal.2019, author = {Palyulin, Vladimir V and Blackburn, George and Lomholt, Michael A and Watkins, Nicholas W and Metzler, Ralf and Klages, Rainer and Chechkin, Aleksei V.}, title = {First passage and first hitting times of L{\´e}vy flights and L{\´e}vy walks}, series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, number = {785}, issn = {1866-8372}, doi = {10.25932/publishup-43983}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-439832}, pages = {25}, year = {2019}, abstract = {For both L{\´e}vy flight and L{\´e}vy walk search processes we analyse the full distribution of first-passage and first-hitting (or first-arrival) times. These are, respectively, the times when the particle moves across a point at some given distance from its initial position for the first time, or when it lands at a given point for the first time. For L{\´e}vy motions with their propensity for long relocation events and thus the possibility to jump across a given point in space without actually hitting it ('leapovers'), these two definitions lead to significantly different results. We study the first-passage and first-hitting time distributions as functions of the L{\´e}vy stable index, highlighting the different behaviour for the cases when the first absolute moment of the jump length distribution is finite or infinite. In particular we examine the limits of short and long times. Our results will find their application in the mathematical modelling of random search processes as well as computer algorithms.}, language = {en} } @misc{KrahThulinFaiersteinetal.2019, author = {Krah, Markus and Thulin, Mirjam and Faierstein, Morris M. and Drori, Danielle and Coors, Maria and Schramm, Netta and Driver, Cory and Holzman, Gitit and Zuckermann, Ghil'ad and Fishbane, Eitan P. and Gruenbaum, Caroline and Schirrmeister, Sebastian and Ferrari, Francesco and Stemberger, G{\"u}nter and Schm{\"o}lz-H{\"a}berlein, Michaela and M{\"u}ller, Judith and Schulz, Michael Karl and Meyer, Thomas and Artwińska, Anna and Walter, Simon}, title = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, editor = {Krah, Markus and Thulin, Mirjam and Pick, Bianca}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-43262}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-432621}, pages = {198}, year = {2019}, abstract = {PaRDeS, die Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien e. V., erforscht die fruchtbare kulturelle Vielfalt des Judentums sowie ihre Ber{\"u}hrungspunkte zur nichtj{\"u}dischen Umwelt in unterschiedlichen Bereichen. Daneben dient die Zeitschrift als Forum zur Positionierung der F{\"a}cher J{\"u}dische Studien und ­Judaistik innerhalb des wissenschaftlichen Diskurses sowie zur Diskussion ihrer historischen und gesellschaftlichen Verantwortung.}, language = {en} } @misc{CeulemansGaedkeKlauschiesetal.2019, author = {Ceulemans, Ruben and Gaedke, Ursula and Klauschies, Toni and Guill, Christian}, title = {The effects of functional diversity on biomass production, variability, and resilience of ecosystem functions in a tritrophic system}, series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, number = {744}, issn = {1866-8372}, doi = {10.25932/publishup-43543}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435439}, pages = {16}, year = {2019}, abstract = {Diverse communities can adjust their trait composition to altered environmental conditions, which may strongly influence their dynamics. Previous studies of trait-based models mainly considered only one or two trophic levels, whereas most natural system are at least tritrophic. Therefore, we investigated how the addition of trait variation to each trophic level influences population and community dynamics in a tritrophic model. Examining the phase relationships between species of adjacent trophic levels informs about the strength of top-down or bottom-up control in non-steadystate situations. Phase relationships within a trophic level highlight compensatory dynamical patterns between functionally different species, which are responsible for dampening the community temporal variability. Furthermore, even without trait variation, our tritrophic model always exhibits regions with two alternative states with either weak or strong nutrient exploitation, and correspondingly low or high biomass production at the top level. However, adding trait variation increased the basin of attraction of the high-production state, and decreased the likelihood of a critical transition from the high- to the lowproduction state with no apparent early warning signals. Hence, our study shows that trait variation enhances resource use efficiency, production, stability, and resilience of entire food webs.}, language = {en} } @phdthesis{Jakobs2019, author = {Jakobs, Friedrich}, title = {Dubrovin-rings and their connection to Hughes-free skew fields of fractions}, doi = {10.25932/publishup-43556}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435561}, school = {Universit{\"a}t Potsdam}, pages = {ix, 62}, year = {2019}, abstract = {One method of embedding groups into skew fields was introduced by A. I. Mal'tsev and B. H. Neumann (cf. [18, 19]). If G is an ordered group and F is a skew field, the set F((G)) of formal power series over F in G with well-ordered support forms a skew field into which the group ring F[G] can be embedded. Unfortunately it is not suficient that G is left-ordered since F((G)) is only an F-vector space in this case as there is no natural way to define a multiplication on F((G)). One way to extend the original idea onto left-ordered groups is to examine the endomorphism ring of F((G)) as explored by N. I. Dubrovin (cf. [5, 6]). It is possible to embed any crossed product ring F[G; η, σ] into the endomorphism ring of F((G)) such that each non-zero element of F[G; η, σ] defines an automorphism of F((G)) (cf. [5, 10]). Thus, the rational closure of F[G; η, σ] in the endomorphism ring of F((G)), which we will call the Dubrovin-ring of F[G; η, σ], is a potential candidate for a skew field of fractions of F[G; η, σ]. The methods of N. I. Dubrovin allowed to show that specific classes of groups can be embedded into a skew field. For example, N. I. Dubrovin contrived some special criteria, which are applicable on the universal covering group of SL(2, R). These methods have also been explored by J. Gr{\"a}ter and R. P. Sperner (cf. [10]) as well as N.H. Halimi and T. Ito (cf. [11]). Furthermore, it is of interest to know if skew fields of fractions are unique. For example, left and right Ore domains have unique skew fields of fractions (cf. [2]). This is not the general case as for example the free group with 2 generators can be embedded into non-isomorphic skew fields of fractions (cf. [12]). It seems likely that Ore domains are the most general case for which unique skew fields of fractions exist. One approach to gain uniqueness is to restrict the search to skew fields of fractions with additional properties. I. Hughes has defined skew fields of fractions of crossed product rings F[G; η, σ] with locally indicable G which fulfill a special condition. These are called Hughes-free skew fields of fractions and I. Hughes has proven that they are unique if they exist [13, 14]. This thesis will connect the ideas of N. I. Dubrovin and I. Hughes. The first chapter contains the basic terminology and concepts used in this thesis. We present methods provided by N. I. Dubrovin such as the complexity of elements in rational closures and special properties of endomorphisms of the vector space of formal power series F((G)). To combine the ideas of N.I. Dubrovin and I. Hughes we introduce Conradian left-ordered groups of maximal rank and examine their connection to locally indicable groups. Furthermore we provide notations for crossed product rings, skew fields of fractions as well as Dubrovin-rings and prove some technical statements which are used in later parts. The second chapter focuses on Hughes-free skew fields of fractions and their connection to Dubrovin-rings. For that purpose we introduce series representations to interpret elements of Hughes-free skew fields of fractions as skew formal Laurent series. This 1 Introduction allows us to prove that for Conradian left-ordered groups G of maximal rank the statement "F[G; η, σ] has a Hughes-free skew field of fractions" implies "The Dubrovin ring of F [G; η, σ] is a skew field". We will also prove the reverse and apply the results to give a new prove of Theorem 1 in [13]. Furthermore we will show how to extend injective ring homomorphisms of some crossed product rings onto their Hughes-free skew fields of fractions. At last we will be able to answer the open question whether Hughes--free skew fields are strongly Hughes-free (cf. [17, page 53]).}, language = {en} } @misc{PoradaTammRaggioetal.2019, author = {Porada, Philipp and Tamm, Alexandra and Raggio, Jose and Yafang, Cheng and Kleidon, Axel and P{\"o}schl, Ulrich and Weber, Bettina}, title = {Global NO and HONO emissions of biological soil crusts estimated by a process-based non-vascular vegetation model}, series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, number = {746}, issn = {1866-8372}, doi = {10.25932/publishup-43568}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435682}, pages = {2003 -- 2031}, year = {2019}, abstract = {The reactive trace gases nitric oxide (NO) and nitrous acid (HONO) are crucial for chemical processes in the atmosphere, including the formation of ozone and OH radicals, oxidation of pollutants, and atmospheric self-cleaning. Recently, empirical studies have shown that biological soil crusts are able to emit large amounts of NO and HONO, and they may therefore play an important role in the global budget of these trace gases. However, the upscaling of local estimates to the global scale is subject to large uncertainties, due to unknown spatial distribution of crust types and their dynamic metabolic activity. Here, we perform an alternative estimate of global NO and HONO emissions by biological soil crusts, using a process-based modelling approach to these organisms, combined with global data sets of climate and land cover. We thereby consider that NO and HONO are emitted in strongly different proportions, depending on the type of crust and their dynamic activity, and we provide a first estimate of the global distribution of four different crust types. Based on this, we estimate global total values of 1.04 Tg yr⁻¹ NO-N and 0.69 Tg yr⁻¹ HONO-N released by biological soil crusts. This corresponds to around 20\% of global emissions of these trace gases from natural ecosystems. Due to the low number of observations on NO and HONO emissions suitable to validate the model, our estimates are still relatively uncertain. However, they are consistent with the amount estimated by the empirical approach, which confirms that biological soil crusts are likely to have a strong impact on global atmospheric chemistry via emissions of NO and HONO.}, language = {en} } @techreport{Devaney2019, type = {Working Paper}, author = {Devaney, James Gerard}, title = {Selecting Investment Arbitrators}, series = {KFG Working Paper Series}, journal = {KFG Working Paper Series}, number = {33}, doi = {10.25932/publishup-43579}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435797}, pages = {27}, year = {2019}, abstract = {This paper focuses on one particular issue which has arisen in the course of the ongoing debate on the reform of investor-State dispute settlement (ISDS), namely that of the appointment of arbitrators. Taking as its starting point that there now exists tentative consensus that the present system for the appointment of arbitrators either causes or exacerbates certain problematic aspects of the current ISDS system, the paper explores one option for reform, namely the introduction of an independent panel for the selection of investment arbitrators. In doing so, it is argued that a shift in the normative basis of the rules governing appointments is required in order to accommodate the principles of party autonomy and the international rule of law. Such reform, while not completely removing the initiative that parties presently enjoy, is the most efficient way to introduce rule of law considerations such as a measure of judicial independence into the current appointments system. This, it is argued, would in turn help to address some of the problematic features of the appointment of arbitrators in ISDS.}, language = {en} } @techreport{KriegerPueschmann2019, type = {Working Paper}, author = {Krieger, Heike and P{\"u}schmann, Jonas}, title = {Securing of Resources as a Valid Reason for Using Force?}, series = {KFG Working Paper Series}, journal = {KFG Working Paper Series}, number = {31}, doi = {10.25932/publishup-43573}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435738}, pages = {24}, year = {2019}, abstract = {A growing demand for natural resources embedded in current changes of the international order will put pressure on states to secure the future availability of these resources. Some political discourses suggest that states might respond by challenging the foundations of international law. Whereas the UN Charter was inter alia aimed at eliminating uses of force for economic reasons, one may observe an on-going trend of securitization of matters of resource supply resulting into the revival of self-preservation doctrines. The chapter will show that those claims lack a normative foundation in the current framework of the prohibition of the use of force. Moreover, international law has sufficient instruments to cope with disputes over access to resources by other means than the use of force. The international community, therefore, must oppose claims that may contribute to normative uncertainties and strengthen already existing instruments of pacific settlement of disputes.}, language = {en} } @techreport{Kulaga2019, type = {Working Paper}, author = {Kulaga, Julian}, title = {A Renaissance of the Doctrine of Rebus Sic Stantibus?}, series = {KFG Working Paper Series}, journal = {KFG Working Paper Series}, number = {32}, doi = {10.25932/publishup-43578}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435788}, pages = {21}, year = {2019}, abstract = {Once the "popular plaything of Realpolitiker" the doctrine of rebus sic stantibus post the 1969 VCLT is often described as an objective rule by which, on grounds of equity and justice, a fundamental change of circumstances may be invoked as a ground for termination. Yet recent practice from States such as Ecuador, Russia, Denmark and the United Kingdom suggests that it is returning with a new livery. They point to an understanding based on vital States' interests--a view popular among scholars such as Erich Kaufmann at the beginning of the last century.}, language = {en} } @techreport{Pellet2019, type = {Working Paper}, author = {Pellet, Alain}, title = {Values and Power Relations - The "Disillusionment" of International Law?}, series = {KFG Working Paper Series}, journal = {KFG Working Paper Series}, number = {34}, doi = {10.25932/publishup-43581}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435819}, pages = {15}, year = {2019}, abstract = {This paper - which is based on the Thomas Franck Lecture held by the author at Humboldt University Berlin on 13 May 2019 - argues that the most likely development of international to be expected will be the coexistence of two "legal worlds". On the one hand, an inter-State law brutally regulating political relations between human groups whitewashed by nationalism; on the other hand, a transnational or "a-national" law regulating economic relations between private as well as public interests. Further, the paper argues that there are two obvious victims - of very different nature - of this foreseeable evolution: the human being on the one hand, the certainty and effectiveness of the rule of law itself on the other hand.}, language = {en} } @misc{KulkovaFischer2019, author = {Kulkova, Elena S. and Fischer, Martin H.}, title = {Idioms in the World}, series = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe}, number = {561}, issn = {1866-8364}, doi = {10.25932/publishup-43570}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435704}, pages = {4}, year = {2019}, language = {en} } @book{Kayser2019, author = {Kayser, Leonie}, title = {The Golm Campus of the University of Potsdam}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-472-2}, doi = {10.25932/publishup-43140}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-431404}, publisher = {Universit{\"a}t Potsdam}, pages = {88}, year = {2019}, abstract = {West of Potsdam's city center lies the Golm Campus, the largest campus of the University of Potsdam. Its different buildings tell of the numerous institutions that were established at this site over the years: From the mid-1930s, the Walther Wever Barracks were located here. From 1943, it housed the Air Intelligence Division of the German Airforce Supreme Commander. In 1951, a training institution of the Ministry of State Security moved in, which existed until 1989 under different names. In July 1991, the newly founded University of Potsdam took over the premises, which are now part of the Potsdam-Golm Science Park. The book takes you on a historic journey of the place and invites you to take a walk across today's campus. The book includes over 110 photos and a detailed map.}, language = {en} } @misc{Kałczewiak2019, author = {Kałczewiak, Mariusz}, title = {Yiddish in the Andes}, series = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe}, number = {571}, doi = {10.25932/publishup-43506}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435064}, pages = {21}, year = {2019}, abstract = {This article elucidates the efforts of Chilean-Jewish activists to create, manage and protect Chilean Yiddish culture. It illuminates how Yiddish cultural leaders in small diasporas, such as Chile, worked to maintain dialogue with other Jewish centers. Chilean culturists maintained that a unique Latin American Jewish culture existed and needed to be strengthened through the joint efforts of all Yiddish actors on the continent. Chilean activists envisioned a modern Jewish culture informed by both Eastern European influences and local Jewish cultural production, as well as by exchanges with non-Jewish Latin American majority cultures.}, language = {en} } @misc{KruegerKellingLinkeretal.2019, author = {Krueger, Tobias and Kelling, Alexandra and Linker, Torsten and Schilde, Uwe}, title = {Crystal structures of three cyclohexane‑based γ‑spirolactams}, series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, number = {738}, doi = {10.25932/publishup-43491}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-434911}, pages = {9}, year = {2019}, abstract = {The title compounds, 2-azaspiro[4.5]deca-1-one, C₉H₁₅NO, (1a), cis-8-methyl-2-azaspiro[4.5]deca-1-one, C₁₀H₁₇NO, (1b), and trans-8-methyl-2-azaspiro[4.5]deca-1-one, C₁₀H₁₇NO, (1c), were synthesized from benzoic acids 2 in only 3 steps in high yields. Crystallization from n-hexane afforded single crystals, suitable for X-ray diffraction. Thus, the configurations, conformations, and interesting crystal packing effects have been determined unequivocally. The bicyclic skeleton consists of a lactam ring, attached by a spiro junction to a cyclohexane ring. The lactam ring adopts an envelope conformation and the cyclohexane ring has a chair conformation. The main difference between compound 1b and compound 1c is the position of the carbonyl group on the 2-pyrrolidine ring with respect to the methyl group on the 8-position of the cyclohexane ring, which is cis (1b) or trans (1c). A remarkable feature of all three compounds is the existence of a mirror plane within the molecule. Given that all compounds crystallize in centrosymmetric space groups, the packing always contains interesting enantiomer-like pairs. Finally, the structures are stabilized by intermolecular N-H···O hydrogen bonds.}, language = {en} } @misc{RiedelSiemiatkowskaWatanabeetal.2019, author = {Riedel, Simona and Siemiatkowska, Beata and Watanabe, Mutsumi and M{\"u}ller, Christina S. and Sch{\"u}nemann, Volker and Hoefgen, Rainer and Leimk{\"u}hler, Silke}, title = {The ABCB7-Like Transporter PexA in Rhodobacter capsulatus Is Involved in the Translocation of Reactive Sulfur Species}, series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, number = {740}, issn = {1866-8372}, doi = {10.25932/publishup-43497}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-434975}, pages = {10}, year = {2019}, abstract = {The mitochondrial ATP-binding cassette (ABC) transporters ABCB7 in humans, Atm1 in yeast and ATM3 in plants, are highly conserved in their overall architecture and particularly in their glutathione binding pocket located within the transmembrane spanning domains. These transporters have attracted interest in the last two decades based on their proposed role in connecting the mitochondrial iron sulfur (Fe-S) cluster assembly with its cytosolic Fe-S cluster assembly (CIA) counterpart. So far, the specific compound that is transported across the membrane remains unknown. In this report we characterized the ABCB7-like transporter Rcc02305 in Rhodobacter capsulatus, which shares 47\% amino acid sequence identity with its mitochondrial counterpart. The constructed interposon mutant strain in R. capsulatus displayed increased levels of intracellular reactive oxygen species without a simultaneous accumulation of the cellular iron levels. The inhibition of endogenous glutathione biosynthesis resulted in an increase of total glutathione levels in the mutant strain. Bioinformatic analysis of the amino acid sequence motifs revealed a potential aminotransferase class-V pyridoxal-50-phosphate (PLP) binding site that overlaps with the Walker A motif within the nucleotide binding domains of the transporter. PLP is a well characterized cofactor of L-cysteine desulfurases like IscS and NFS1 which has a role in the formation of a protein-bound persulfide group within these proteins. We therefore suggest renaming the ABCB7-like transporter Rcc02305 in R. capsulatus to PexA for PLP binding exporter. We further suggest that this ABC-transporter in R. capsulatus is involved in the formation and export of polysulfide species to the periplasm.}, language = {en} } @techreport{Neugebauer2019, type = {Working Paper}, author = {Neugebauer, Konrad}, title = {Holding Domestic Judges Accountable under International Criminal Law}, series = {KFG Working Paper Series}, journal = {KFG Working Paper Series}, number = {36}, doi = {10.25932/publishup-43587}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435877}, pages = {31}, year = {2019}, abstract = {This article explores, whether domestic judges might be held accountable under international criminal law (ICL). To date, international criminal justice has almost entirely focused on prosecuting political or military leaders. The Justice Case tried before the Nuremberg Military Tribunal in 1946 marks the most prominent exception. Prior to it, the judiciary - otherwise considered the epitome of justice - had mutated into a murderous machinery under Nazi rule. Judicial decisions do have far-reaching implications possibly constituting or contributing to international crimes. This holds true in a wide range of cases, for instance on practices of warfare and torture, on the use of certain weapon technologies, or on policies relating to minorities or racial segregation. I argue that domestic judges are accountable when engaging in international crimes. The article delves into technical aspects of criminal law; as well as the notions of judicial independence and immunity. While guaranteeing the rule of law, these two notions challenge the core idea of ICL: its equal application vis-{\`a}-vis all perpetrators of international crimes irrespective of official capacity. In order to differentiate due judicial conduct and its abuse in violation of ICL, I suggest a threshold a judicial act needs to exceed for entailing accountability for an international crime.}, language = {en} } @techreport{Sandholtz2019, type = {Working Paper}, author = {Sandholtz, Wayne}, title = {Resurgent Authoritarianism and the International Rule of Law}, series = {KFG Working Paper Series}, journal = {KFG Working Paper Series}, number = {38}, doi = {10.25932/publishup-43589}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435899}, pages = {31}, year = {2019}, abstract = {Modern rule of law and post-war constitutionalism are both anchored in rights-based limitations on state authority. Rule-of-law norms and principles, at both domestic and international levels, are designed to protect the freedom and dignity of the person. Given this "thick" conception of the rule of law, authoritarian practices that remove constraints on domestic political leaders and weaken mechanisms for holding them accountable necessarily erode both domestic and international rule of law. Drawing on political science research on authoritarian politics, this study identifies three core elements of authoritarian political strategies: subordination of the judiciary, suppression of independent news media and freedom of expression, and restrictions on the ability of civil society groups to organize and participate in public life. According to available data, each of these three practices has become increasingly common in recent years. This study offers a composite measure of the core authoritarian practices and uses it to identify the countries that have shown the most marked increases in authoritarianism. The spread and deepening of these authoritarian practices in diverse regimes around the world diminishes international rule of law. The conclusion argues that resurgent authoritarianism degrades international rule of law even if this is defined as the specifically post-Cold War international legal order.}, language = {en} } @techreport{Sandholtz2019, type = {Working Paper}, author = {Sandholtz, Wayne}, title = {Human Rights Courts and Global Constitutionalism}, series = {KFG Working Paper Series}, journal = {KFG Working Paper Series}, number = {35}, doi = {10.25932/publishup-43583}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435831}, pages = {30}, year = {2019}, abstract = {International courts regularly cite each other, in part as a means of building legitimacy. Such international, cross-court use of precedent (or "judicial dialogue") among the regional human rights courts and the Human Rights Committee has an additional purpose and effect: the construction of a rights-based global constitutionalism. Judicial dialogue among the human rights courts is purposeful in that the courts see themselves as embedded in, and contributing to, a global human rights legal system. Cross-citation among the human rights courts advances the construction of rights-based global constitutionalism in that it provides a basic degree of coordination among the regional courts. The jurisprudence of the U.N. Human Rights Committee (HRC), as an authoritative interpreter of core international human rights norms, plays the role of a central focal point for the decentralized coordination of jurisprudence. The network of regional courts and the HRC is building an emergent institutional structure for global rights-based constitutionalism.}, language = {en} } @techreport{Nolte2019, type = {Working Paper}, author = {Nolte, Georg}, title = {How to Identify Customary International Law? - On the Final Outcome of the Work of the International Law Commission (2018)}, series = {KFG Working Paper Series}, journal = {KFG Working Paper Series}, number = {37}, doi = {10.25932/publishup-43588}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435884}, pages = {22}, year = {2019}, abstract = {How to identify customary international law is an important question of international law. The International Law Commission has in 2018 adopted a set of sixteen conclusions, together with commentaries, on this topic. The paper consists of three parts: First, the reasons are discussed why the Commission came to work on the topic "Identification of customary international law". Then, some of its conclusions are highlighted. Finally, the outcome of the work of the Commission is placed in a general context, before concluding.}, language = {en} } @techreport{Jo2019, type = {Working Paper}, author = {Jo, Hyeran}, title = {Rise and Decline of International Rule of Law}, series = {KFG Working Paper Series}, journal = {KFG Working Paper Series}, number = {39}, doi = {10.25932/publishup-43590}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435900}, pages = {20}, year = {2019}, abstract = {This paper assesses the rise and decline of international rule of law in the case of non-state armed actors. Both signs of rise and signs of decline of international rule of law show in the case of non- state armed actors. Signs of rise include the expansion of coverage of international humanitarian law (IHL) and international criminal law, as well as international legal argumentation and rhetoric made by non-state armed groups. Some non-state armed actors express that they are governed by IHL in public statements or bilateral agreements with international actors, partly acknowledging universality of international humanitarian norms, and sometimes act as such. Signs of decline in the international rule of law also show - although some of them can be seen as business-as-usual - privileging of military advantage, instrumental use of international law (as justification and local interpretations), as well as conflicting understanding of IHL between local and global norms. The multiplicity of non-state actors also portends the decline of international rule of law, with the proliferation of many non-organized groups without legitimacy-seeking motivations.}, language = {en} } @misc{HeuerOrland2019, author = {Heuer, Leonie and Orland, Andreas}, title = {Cooperation in the Prisoner's Dilemma}, series = {Postprints der Universit{\"a}t Potsdam Wirtschafts- und Sozialwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Wirtschafts- und Sozialwissenschaftliche Reihe}, number = {107}, issn = {1867-5808}, doi = {10.25932/publishup-43592}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-435929}, pages = {9}, year = {2019}, abstract = {Cooperation is — despite not being predicted by game theory — a widely documented aspect of human behaviour in Prisoner's Dilemma (PD) situations. This article presents a comparison between subjects restricted to playing pure strategies and subjects allowed to play mixed strategies in a one-shot symmetric PD laboratory experiment. Subjects interact with 10 other subjects and take their decisions all at once. Because subjects in the mixed-strategy treatment group are allowed to condition their level of cooperation more precisely on their beliefs about their counterparts' level of cooperation, we predicted the cooperation rate in the mixed-strategy treatment group to be higher than in the pure-strategy control group. The results of our experiment reject our prediction: even after controlling for beliefs about the other subjects' level of cooperation, we find that cooperation in the mixed-strategy group is lower than in the pure-strategy group. We also find, however, that subjects in the mixedstrategy group condition their cooperative behaviour more closely on their beliefs than in the pure-strategy group. In the mixed-strategy group, most subjects choose intermediate levels of cooperation.}, language = {en} } @phdthesis{Rector2019, author = {Rector, Michael V.}, title = {The acute effect of exercise on flow-mediated dilation in young people with cystic fibrosis}, doi = {10.25932/publishup-43893}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-438938}, school = {Universit{\"a}t Potsdam}, pages = {121}, year = {2019}, abstract = {Introduction: Cystic fibrosis (CF) is a genetic disease which disrupts the function of an epithelial surface anion channel, CFTR (cystic fibrosis transmembrane conductance regulator). Impairment to this channel leads to inflammation and infection in the lung causing the majority of morbidity and mortality. However, CF is a multiorgan disease affecting many tissues, including vascular smooth muscle. Studies have revealed young people with cystic fibrosis lacking inflammation and infection still demonstrate vascular endothelial dysfunction, measured per flow-mediated dilation (FMD). In other disease cohorts, i.e. diabetic and obese, endurance exercise interventions have been shown improve or taper this impairment. However, long-term exercise interventions are risky, as well as costly in terms of time and resources. Nevertheless, emerging research has correlated the acute effects of exercise with its long-term benefits and advocates the study of acute exercise effects on FMD prior to longitudinal studies. The acute effects of exercise on FMD have previously not been examined in young people with CF, but could yield insights on the potential benefits of long-term exercise interventions. The aims of these studies were to 1) develop and test the reliability of the FMD method and its applicability to study acute exercise effects; 2) compare baseline FMD and the acute exercise effect on FMD between young people with and without CF; and 3) explore associations between the acute effects of exercise on FMD and demographic characteristics, physical activity levels, lung function, maximal exercise capacity or inflammatory hsCRP levels. Methods: Thirty young volunteers (10 people with CF, 10 non-CF and 10 non-CF active matched controls) between the ages of 10 and 30 years old completed blood draws, pulmonary function tests, maximal exercise capacity tests and baseline FMD measurements, before returning approximately 1 week later and performing a 30-min constant load training at 75\% HRmax. FMD measurements were taken prior, immediately after, 30 minutes after and 1 hour after constant load training. ANOVAs and repeated measures ANOVAs were employed to explore differences between groups and timepoints, respectively. Linear regression was implemented and evaluated to assess correlations between FMD and demographic characteristics, physical activity levels, lung function, maximal exercise capacity or inflammatory hsCRP levels. For all comparisons, statistical significance was set at a p-value of α < 0.05. Results: Young people with CF presented with decreased lung function and maximal exercise capacity compared to matched controls. Baseline FMD was also significantly decreased in the CF group (CF: 5.23\% v non-CF: 8.27\% v non-CF active: 9.12\%). Immediately post-training, FMD was significantly attenuated (approximately 40\%) in all groups with CF still demonstrating the most minimal FMD. Follow-up measurements of FMD revealed a slow recovery towards baseline values 30 min post-training and improvements in the CF and non-CF active groups 60 min post-training. Linear regression exposed significant correlations between maximal exercise capacity (VO2 peak), BMI and FMD immediately post-training. Conclusion: These new findings confirm that CF vascular endothelial dysfunction can be acutely modified by exercise and will aid in underlining the importance of exercise in CF populations. The potential benefits of long-term exercise interventions on vascular endothelial dysfunction in young people with CF warrants further investigation.}, language = {en} } @phdthesis{Gabriel2019, author = {Gabriel, Christina}, title = {Entwicklung neuer St{\"a}rkederivate f{\"u}r die Anwendung als wasserbasierte Filmbildner in Farben und Lacken}, doi = {10.25932/publishup-43294}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-432942}, school = {Universit{\"a}t Potsdam}, pages = {XVIII, 160, xxxix, x1}, year = {2019}, abstract = {In den letzten Jahrzehnten fand auch in der Beschichtungsindustrie ein Umdenken hin zu umweltfreundlicheren Farben und Lacken statt. Allerdings basieren auch neue L{\"o}sungen meist nicht auf Biopolymeren und in einem noch geringeren Anteil auf wasserbasierten Beschichtungssystemen aus nachwachsenden Rohstoffen. Dies stellt den Ankn{\"u}pfungspunkt dieser Arbeit dar, in der untersucht wurde, ob das Biopolymer St{\"a}rke das Potenzial zum wasserbasierten Filmbildner f{\"u}r Farben und Lacke besitzt. Dabei m{\"u}ssen angelehnt an etablierte synthetische Marktprodukte die folgenden Kriterien erf{\"u}llt werden: Die w{\"a}ssrige Dispersion muss mindestens einen 30\%igen Feststoffgehalt haben, bei Raumtemperatur verarbeitet werden k{\"o}nnen und Viskosit{\"a}ten zwischen 10^2-10^3 mPa·s aufweisen. Die finale Beschichtung muss einen geschlossenen Film bilden und sehr gute Haftfestigkeiten zu einer spezifischen Oberfl{\"a}che, in dieser Arbeit Glas, besitzen. Als Grundlage f{\"u}r die Modifizierung der St{\"a}rke wurde eine Kombination von molekularem Abbau und chemischer Funktionalisierung ausgew{\"a}hlt. Da nicht bekannt war, welchen Einfluss die St{\"a}rkeart, die gew{\"a}hlte Abbaureaktion als auch verschiedene Substituenten auf die Dispersionsherstellung und deren Eigenschaften sowie die Beschichtungseigenschaften aus{\"u}ben k{\"o}nnten, wurden die strukturellen Parameter getrennt voneinander untersucht. Das erste Themengebiet beinhaltete den oxidativen Abbau von Kartoffel- und Palerbsenst{\"a}rke mittels des Hypochlorit-Abbaus (OCl-) und des ManOx-Abbaus (H2O2, KMnO4). Mit beiden Abbaureaktionen konnten vergleichbare gewichtsmittlere Molmassen (Mw) von 2·10^5-10^6 g/mol (GPC-MALS) hergestellt werden. Allerdings f{\"u}hrten die gew{\"a}hlten Reaktionsbedingungen beim ManOx-Abbau zur Bildung von Gelpartikeln. Diese lagen im µm-Bereich (DLS und Kryo-REM-Messungen) und hatten zur Folge, dass die ManOx-Proben deutlich erh{\"o}hte Viskosit{\"a}ten (c: 7,5 \%; 9-260 mPa·s) im Vergleich zu den OCl--Proben (4-10 mPa·s) bei scherverd{\"u}nnendem Verhalten besaßen und die Eigenschaften von viskoelastischen Gelen (G' > G'') zeigten. Des Weiteren wiesen sie reduzierte Heißwasserl{\"o}slichkeiten (95 °C, vorrangig: 70-99 \%) auf. Der OCl--Abbau f{\"u}hrte zu hydrophileren (Carboxylgruppengehalt bis zu 6,1 \%; ManOx: bis zu 3,1 \%), nach 95 °C-Behandlung vollst{\"a}ndig wasserl{\"o}slichen abgebauten St{\"a}rken, die ein Newtonsches Fließverhalten mit Eigenschaften einer viskoelastischen Fl{\"u}ssigkeit (G'' > G') hatten. Die OCl--Proben konnten im Vergleich zu den ManOx-Produkten (10-20 \%) zu konzentrierteren Dispersionen (20-40 \%) verarbeitet werden, die gleichzeitig die Einschr{\"a}nkung von anwendungsrelevanten Mw auf < 7·10^5 g/mol zuließen (Konzentration sollte > 30 \% sein). Außerdem f{\"u}hrten nur die OCl--Proben der Kartoffelst{\"a}rke zu transparenten (alle anderen waren opak) geschlossenen Beschichtungsfilmen. Somit hebt sich die Kombination von OCl--Abbau und Kartoffelst{\"a}rke mit Hinblick auf die Endanwendung ab. Das zweite Themengebiet umfasste Untersuchungen zum Einfluss von Ester- und Hydroxyalkylether-Substituenten auf Basis einer industriell abgebauten Kartoffelst{\"a}rke (Mw: 1,2·10^5 g/mol) vor allem auf die Dispersionsherstellung, die rheologischen Eigenschaften der Dispersionen und die Beschichtungseigenschaften in Kombination mit Glassubstraten. Dazu wurden Ester und Ether mit DS/MS-Werten von 0,07-0,91 synthetisiert. Die Derivate konnten zu wasserbasierten Dispersionen mit Konzentrationen von 30-45 \% verarbeitet werden, wobei bei hydrophoberen Modifikaten ein Co-L{\"o}semittel, Diethylenglycolmonobutylether (DEGBE), eingesetzt werden musste. Die Feststoffgehalte sanken dabei f{\"u}r beide Derivatklassen vor allem mit zunehmender Alkylkettenl{\"a}nge. Die anwendungsrelevanten Viskosit{\"a}ten (323-1240 mPa·s) stiegen auf Grund von Wechselwirkungen tendenziell mit DS/MS und Alkylkettenl{\"a}nge an. Hinsichtlich der Beschichtungseigenschaften erwiesen sich die Ester vergleichend zu den Ethern als die bevorzugte Substituentenklasse, da nur die Ester geschlossene, defektfreie und mehrheitlich transparente Beschichtungsfilme bildeten, die exzellente bis sehr gute Haftfestigkeiten (ISO Klasse: 0 und 1) auf Glas besaßen. Die Ether bildeten mehrheitlich br{\"u}chige Filme. Basierend auf der Kombination der Ergebnisse aus L{\"o}semittelaustausch, den rheologischen Untersuchungen und zus{\"a}tzlichen Oberfl{\"a}chenspannungsmessungen (30-61 mN/m) konnte geschlossen werden, dass wahrscheinlich fehlende oder schlechte Haftfestigkeiten vorrangig akkumuliertem Wasser in den Beschichtungsfilmen (visuell: tr{\"u}b oder weiß) geschuldet sind, w{\"a}hrend die Br{\"u}chigkeit vermutlich auf Wechselwirkungen (H-Br{\"u}cken Wechselwirkungen, hydrophobe Wechselwirkungen) zwischen den Polymeren zur{\"u}ckgef{\"u}hrt werden kann. Insgesamt scheint die Kombination aus Kartoffelst{\"a}rke basierend auf dem OCl--Abbau mit Mw < 7·10^5 g/mol und einem Estersubstituenten eine gute Wahl f{\"u}r wasserbasierte Dispersionen mit hohen Feststoffkonzentrationen (> 30 \%), guter Filmbildung und exzellenten Haftungen auf Glas zu sein.}, language = {de} } @misc{BoschVerissimoClahsen2019, author = {Bosch, Sina and Ver{\´i}ssimo, Joao Marques and Clahsen, Harald}, title = {Inflectional morphology in bilingual language processing}, series = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe}, number = {569}, issn = {1866-8364}, doi = {10.25932/publishup-43337}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-433371}, pages = {339 -- 360}, year = {2019}, abstract = {This study addresses the question of how age of acquisition (AoA) affects grammatical processing, specifically with respect to inflectional morphology, in bilinguals. We examined experimental data of more than 100 participants from the Russian/German community in Berlin, all of whom acquired Russian from birth and German at different ages. Using the cross-modal lexical priming technique, we investigated stem allomorphs of German verbs that encode multiple morphosyntactic features. The results revealed a striking AoA modulation of observed priming patterns, indicating efficient access to morphosyntactic features for early AoAs and a gradual decline with increasing AoAs. In addition, we found a discontinuity in the function relating AoA to morphosyntactic feature access, suggesting a sensitive period for the development of morphosyntax.}, language = {en} } @article{Rauh2019, author = {Rauh, Gisa}, title = {Erinnerungen an die Gr{\"u}ndung des Instituts f{\"u}r Linguistik an der Universit{\"a}t Potsdam}, series = {Of trees and birds. A Festschrift for Gisbert Fanselow}, journal = {Of trees and birds. A Festschrift for Gisbert Fanselow}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-457-9}, doi = {10.25932/publishup-43320}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-433202}, pages = {415 -- 435}, year = {2019}, language = {de} } @misc{Heucher2019, author = {Heucher, Angela}, title = {Evolving order?}, series = {Postprints der Universit{\"a}t Potsdam Wirtschafts- und Sozialwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Wirtschafts- und Sozialwissenschaftliche Reihe}, number = {110}, issn = {1867-5808}, doi = {10.25932/publishup-43308}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-433086}, pages = {26}, year = {2019}, abstract = {Global food security governance is fraught with fragmentation, overlap and complexity. While calls for coordination and coherence abound, establishing an inter-organizational order at this level seems to remain difficult. While the emphasis in the literature has so far been on the global level, we know less about dynamics of inter-organizational relations in food security governance at the country level, and empirical studies are lacking. It is this research gap the article seeks to address by posing the following research question: In how far does inter-organizational order develop in the organizational field of food security governance at the country level? Theoretically and conceptually, the article draws on sociological institutionalism, and on work on inter-organizational relations. Empirically, the article conducts an exploratory case study of the organizational field of food security governance in C{\^o}te d'Ivoire, building on a qualitative content analysis of organizational documents covering a period from 2003 to 2016 and semi-structured interviews with staff of international organizations from 2016. The article demonstrates that not all of the developments attributed to food security governance at the global level play out in the same way at the country level. Rather, in the case of C{\^o}te d'Ivoire there are signs for a certain degree of coherence between IOs in the field of food security governance and even for an - albeit limited - division of labour. However, this only holds for specific dimensions of the inter-organizational order and appears to be subject to continuous contestation and reinterpretation under the surface.}, language = {en} } @misc{Seyfried2019, author = {Seyfried, Markus}, title = {Undisclosed desires}, series = {Postprints der Universit{\"a}t Potsdam Wirtschafts- und Sozialwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Wirtschafts- und Sozialwissenschaftliche Reihe}, number = {109}, issn = {1867-5808}, doi = {10.25932/publishup-43304}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-433040}, pages = {15}, year = {2019}, abstract = {Following decades of quality management featuring in higher education settings, questions regarding its implementation, impact and outcomes remain. Indeed, leaving aside anecdotal case studies and value-laden documentaries of best practice, current research still knows very little about the implementation of quality management in teaching and learning within higher education institutions. Referring to data collected from German higher education institutions in which a quality management department or functional equivalent was present, this article theorises and provides evidence for the supposition that the implementation of quality management follows two implicit logics. Specifically, it tends either towards the logic of appropriateness or, contrastingly, towards the logic of consequentialism. This study's results also suggest that quality managers' socialisation is related to these logics and that it influences their views on quality management in teaching and learning.}, language = {en} } @article{Staudacher2019, author = {Staudacher, Peter}, title = {Plato on nature (φύσις) and convention (συνθήκη)}, series = {Of trees and birds. A Festschrift for Gisbert Fanselow}, journal = {Of trees and birds. A Festschrift for Gisbert Fanselow}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-457-9}, doi = {10.25932/publishup-43319}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-433193}, pages = {395 -- 411}, year = {2019}, language = {en} } @article{Wunderlich2019, author = {Wunderlich, Dieter}, title = {{\"U}ber naturnotwendige und kulturaffine Schritte in der Sprachentstehung und -entwicklung}, series = {Of trees and birds. A Festschrift for Gisbert Fanselow}, journal = {Of trees and birds. A Festschrift for Gisbert Fanselow}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-457-9}, doi = {10.25932/publishup-43318}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-433182}, pages = {383 -- 394}, year = {2019}, language = {de} } @misc{HudsonDeRuigDeRuiteretal.2019, author = {Hudson, Paul and De Ruig, Lars T. and De Ruiter, Marco C. and Kuik, Onno J. and Botzen, W. J. Wouter and Le Den, X. and Persson, Magnus and Benoist, Anthony and Nielsen, C. N.}, title = {An assessment of best practices of extreme weather insurance and directions for a more resilient society}, series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, number = {757}, issn = {1866-8372}, doi = {10.25932/publishup-43351}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-433510}, pages = {22}, year = {2019}, abstract = {Extreme weather resilience has been defined as being based on three pillars: resistance (the ability to lower impacts), recovery (the ability to bounce back), and adaptive capacity (the ability to learn and improve). These resilience pillars are important both before and after the occurrence of extreme weather events. Extreme weather insurance can influence these pillars of resilience depending on how particular insurance mechanisms are structured. We explore how the lessons learnt from the current best insurance practices can improve resilience to extreme weather events. We employ an extensive inventory of private property and agricultural crop insurance mechanisms to conduct a multi-criteria analysis of insurance market outcomes. We draw conclusions regarding the patterns in the best practice from six European countries to increase resilience. We suggest that requirements to buy a bundle extreme weather event insurance with general insurance packages are strengthened and supported with structures to financing losses through public-private partnerships. Moreover, support for low income households through income vouchers could be provided. Similarly, for the agricultural sector we propose moving towards comprehensive crop yield insurance linked to general agricultural subsidies. In both cases a nationally representative body can coordinate the various stakeholders into acting in concert.}, language = {en} } @misc{Gasser2019, author = {Gasser, Lucy}, title = {Towards Eurasia}, series = {Postprints der Universit{\"a}t Potsdam Philosophische Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Philosophische Reihe}, number = {164}, issn = {1866-8380}, doi = {10.25932/publishup-43358}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-433585}, pages = {188 -- 202}, year = {2019}, abstract = {In order to heed the call in world literature studies to work against disciplinary Eurocentrism by refiguring both what constitutes world literature and how this is read, in this article I propose world literature as an archive of world-making practices and as an impulse for the articulation of alternative methodological approaches. This takes world literature from the postcolonial South as, following Pheng Cheah, instantiating a modality of world literature in which the need for imagining worlds with alternative centres to those determined by coloniality is particularly acute. A response to this is facilitated and illustrated by a reading of Bengali poet Rabindranath Tagore's Letters from Russia (1930), and South African writer/activist Alex La Guma's A Soviet Journey (1978). By drawing forward connections between the postcolonial South and the former Soviet Union, this complicates traditional colonial arrangements of the colonial 'centre' as cradle of civilisation and culture, as well as postcolonial scholarship's cumulative fetishisation of 'Europe', by allowing a reshuffling of the co-ordinates determining 'centres' and 'peripheries' and a more nuanced grasp of 'Europe' simultaneously. These imaginative journeys destabilise 'Europe' as closed category and call forth Eurasia as a more appropriate categorical-cartographical framework for thinking this space and the connections and (hi)story-telling it stages and fosters.}, language = {en} } @phdthesis{RomeroMujalli2019, author = {Romero Mujalli, Daniel}, title = {Ecological modeling of adaptive evolutionary responses to rapid climate change}, doi = {10.25932/publishup-43062}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-430627}, school = {Universit{\"a}t Potsdam}, pages = {167}, year = {2019}, abstract = {A contemporary challenge in Ecology and Evolutionary Biology is to anticipate the fate of populations of organisms in the context of a changing world. Climate change and landscape changes due to anthropic activities have been of major concern in the contemporary history. Organisms facing these threats are expected to respond by local adaptation (i.e., genetic changes or phenotypic plasticity) or by shifting their distributional range (migration). However, there are limits to their responses. For example, isolated populations will have more difficulties in developing adaptive innovations by means of genetic changes than interconnected metapopulations. Similarly, the topography of the environment can limit dispersal opportunities for crawling organisms as compared to those that rely on wind. Thus, populations of species with different life history strategy may differ in their ability to cope with changing environmental conditions. However, depending on the taxon, empirical studies investigating organisms' responses to environmental change may become too complex, long and expensive; plus, complications arising from dealing with endangered species. In consequence, eco-evolutionary modeling offers an opportunity to overcome these limitations and complement empirical studies, understand the action and limitations of underlying mechanisms, and project into possible future scenarios. In this work I take a modeling approach and investigate the effect and relative importance of evolutionary mechanisms (including phenotypic plasticity) on the ability for local adaptation of populations with different life strategy experiencing climate change scenarios. For this, I performed a review on the state of the art of eco-evolutionary Individual-Based Models (IBMs) and identify gaps for future research. Then, I used the results from the review to develop an eco-evolutionary individual-based modeling tool to study the role of genetic and plastic mechanisms in promoting local adaption of populations of organisms with different life strategies experiencing scenarios of climate change and environmental stochasticity. The environment was simulated through a climate variable (e.g., temperature) defining a phenotypic optimum moving at a given rate of change. The rate of change was changed to simulate different scenarios of climate change (no change, slow, medium, rapid climate change). Several scenarios of stochastic noise color resembling different climatic conditions were explored. Results show that populations of sexual species will rely mainly on standing genetic variation and phenotypic plasticity for local adaptation. Population of species with relatively slow growth rate (e.g., large mammals) - especially those of small size - are the most vulnerable, particularly if their plasticity is limited (i.e., specialist species). In addition, whenever organisms from these populations are capable of adaptive plasticity, they can buffer fitness losses in reddish climatic conditions. Likewise, whenever they can adjust their plastic response (e.g., bed-hedging strategy) they will cope with bluish environmental conditions as well. In contrast, life strategies of high fecundity can rely on non-adaptive plasticity for their local adaptation to novel environmental conditions, unless the rate of change is too rapid. A recommended management measure is to guarantee interconnection of isolated populations into metapopulations, such that the supply of useful genetic variation can be increased, and, at the same time, provide them with movement opportunities to follow their preferred niche, when local adaptation becomes problematic. This is particularly important for bluish and reddish climatic conditions, when the rate of change is slow, or for any climatic condition when the level of stress (rate of change) is relatively high.}, language = {en} } @misc{DeCahsanWestburyDrewsetal.2019, author = {De Cahsan, Binia and Westbury, Michael V. and Drews, Hauke and Tiedemann, Ralph}, title = {The complete mitochondrial genome of a European fire-bellied toad (Bombina bombina) from Germany}, series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, number = {532}, issn = {1866-8372}, doi = {10.25932/publishup-42322}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-423222}, pages = {3}, year = {2019}, abstract = {The European fire-bellied toad, Bombina bombina, is a small aquatic toad belonging to the family Bombinatoridae. The species is native to the lowlands of Central and Eastern Europe, where population numbers have been in decline in recent past decades. Here, we present the first complete mitochondrial genome of the endangered European fire-bellied toad from Northern Germany recovered using iterative mapping. Phylogenetic analyses including other representatives of the Bombinatoridae placed our German specimen as sister to a Polish B. bombina sequence with high support. This finding is congruent with the postulated Pleistocene history of the species. Our complete mitochondrial genome represents an important resource for further population analysis of the European fire-bellied toad, especially those found within Germany.}, language = {en} } @misc{RomeroMujalliJeltschTiedemann2019, author = {Romero-Mujalli, Daniel and Jeltsch, Florian and Tiedemann, Ralph}, title = {Elevated mutation rates are unlikely to evolve in sexual species, not even under rapid environmental change}, series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, number = {776}, issn = {1866-8372}, doi = {10.25932/publishup-43905}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-439058}, pages = {11}, year = {2019}, abstract = {Background Organisms are expected to respond to changing environmental conditions through local adaptation, range shift or local extinction. The process of local adaptation can occur by genetic changes or phenotypic plasticity, and becomes especially relevant when dispersal abilities or possibilities are somehow constrained. For genetic changes to occur, mutations are the ultimate source of variation and the mutation rate in terms of a mutator locus can be subject to evolutionary change. Recent findings suggest that the evolution of the mutation rate in a sexual species can advance invasion speed and promote adaptation to novel environmental conditions. Following this idea, this work uses an individual-based model approach to investigate if the mutation rate can also evolve in a sexual species experiencing different conditions of directional climate change, under different scenarios of colored stochastic environmental noise, probability of recombination and of beneficial mutations. The color of the noise mimicked investigating the evolutionary dynamics of the mutation rate in different habitats. Results The results suggest that the mutation rate in a sexual species experiencing directional climate change scenarios can evolve and reach relatively high values mainly under conditions of complete linkage of the mutator locus and the adaptation locus. In contrast, when they are unlinked, the mutation rate can slightly increase only under scenarios where at least 50\% of arising mutations are beneficial and the rate of environmental change is relatively fast. This result is robust under different scenarios of stochastic environmental noise, which supports the observation of no systematic variation in the mutation rate among organisms experiencing different habitats. Conclusions Given that 50\% beneficial mutations may be an unrealistic assumption, and that recombination is ubiquitous in sexual species, the evolution of an elevated mutation rate in a sexual species experiencing directional climate change might be rather unlikely. Furthermore, when the percentage of beneficial mutations and the population size are small, sexual species (especially multicellular ones) producing few offspring may be expected to react to changing environments not by adaptive genetic change, but mainly through plasticity. Without the ability for a plastic response, such species may become - at least locally - extinct.}, language = {en} } @misc{HadzicEcksteinSchugardt2019, author = {Hadzic, Miralem and Eckstein, Max Lennart and Schugardt, Monique}, title = {The Impact of Sodium Bicarbonate on Performance in Response to Exercise Duration in Athletes}, series = {Potsprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, journal = {Potsprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, number = {548}, issn = {1866-8364}, doi = {10.25932/publishup-42807}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-428078}, pages = {11}, year = {2019}, abstract = {According to recent literature sodium bicarbonate (NaHCO3) has been proposed as a performance enhancing aid by reducing acidosis during exercise. The aim of the current review is to investigate if the duration of exercise is an essential factor for the effect of NaHCO3. To collect the latest studies from electronic database of PubMed, study publication time was restricted from December 2006 to December 2016. The search was updated in July 2018. The studies were divided into exercise durations of > 4 or ≤ 4 minutes for easier comparability of their effects in different exercises. Only randomized controlled trials were included in this review. Of the 775 studies, 35 met the inclusion criteria. Study design, subjects, effects as well as outcome criteria were inconsistent throughout the studies. Seventeen of these studies reported performance enhancing effects after supplementing NaHCO3. Eleven of twenty studies with exercise duration of ≤ 4 minutes showed positive and four diverse results after supplementing NaHCO3. On the other hand six of fifteen studies with an exercise duration of >4 minutes showed performance enhancing and two studies showed diverse results. Consequently, the duration of exercise might be influential for inducing a performance enhancing effect when supplementing NaHCO3, but to which extent, remains unclear due to the inconsistencies in the study results.}, language = {en} } @misc{SalzwedelReibisHadzicetal.2019, author = {Salzwedel, Annett and Reibis, Rona Katharina and Hadzic, Miralem and Buhlert, Hermann and V{\"o}ller, Heinz}, title = {Patients' expectations of returning to work, co-morbid disorders and work capacity at discharge from cardiac rehabilitation}, series = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe}, number = {574}, issn = {1866-8364}, doi = {10.25932/publishup-43726}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-437263}, pages = {301 -- 308}, year = {2019}, abstract = {Objective: We aimed to characterize patients after an acute cardiac event regarding their negative expectations around returning to work and the impact on work capacity upon discharge from cardiac rehabilitation (CR). Methods: We analyzed routine data of 884 patients (52±7 years, 76\% men) who attended 3 weeks of inpatient CR after an acute coronary syndrome (ACS) or cardiac surgery between October 2013 and March 2015. The primary outcome was their status determining their capacity to work (fit vs unfit) at discharge from CR. Further, sociodemographic data (eg, age, sex, and education level), diagnoses, functional data (eg, exercise stress test and 6-min walking test [6MWT]), the Hospital Anxiety and Depression Scale (HADS) and self-assessment of the occupational prognosis (negative expectations and/or unemployment, W{\"u}rzburger screening) at admission to CR were considered. Results: A negative occupational prognosis was detected in 384 patients (43\%). Out of these, 368 (96\%) expected not to return to work after CR and/or were unemployed before CR at 29\% (n=113). Affected patients showed a reduced exercise capacity (bicycle stress test: 100 W vs 118 W, P<0.01; 6MWT: 380 m vs 421 m, P<0.01) and were more likely to receive a depression diagnosis (12\% vs 3\%, P<0.01), as well as higher levels on the HADS. At discharge from CR, 21\% of this group (n=81) were fit for work (vs 35\% of patients with a normal occupational prognosis (n=175, P<0.01)). Sick leave before the cardiac event (OR 0.4, 95\% CI 0.2-0.6, P<0.01), negative occupational expectations (OR 0.4, 95\% CI 0.3-0.7, P<0.01) and depression (OR 0.3, 95\% CI 0.1-0.8, P=0.01) reduced the likelihood of achieving work capacity upon discharge. In contrast, higher exercise capacity was positively associated. Conclusion: Patients with a negative occupational prognosis often revealed a reduced physical performance and suffered from a high psychosocial burden. In addition, patients' occupational expectations were a predictor of work capacity at discharge from CR. Affected patients should be identified at admission to allow for targeted psychosocial care.}, language = {en} } @misc{CasselMuellerMoseretal.2019, author = {Cassel, Michael and M{\"u}ller, Juliane and Moser, Othmar and Strempler, Mares Elaine and Reso, Judith and Mayer, Frank}, title = {Orthopedic Injury Profiles in Adolescent Elite Athletes}, series = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe}, number = {559}, issn = {1866-8364}, doi = {10.25932/publishup-43495}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-434953}, pages = {10}, year = {2019}, abstract = {Aim: The aim of the study was to identify common orthopedic sports injury profiles in adolescent elite athletes with respect to age, sex, and anthropometrics. Methods: A retrospective data analysis of 718 orthopedic presentations among 381 adolescent elite athletes from 16 different sports to a sports medical department was performed. Recorded data of history and clinical examination included area, cause and structure of acute and overuse injuries. Injury-events were analyzed in the whole cohort and stratified by age (11-14/15-17 years) and sex. Group differences were tested by chi-squared-tests. Logistic regression analysis was applied examining the influence of factors age, sex, and body mass index (BMI) on the outcome variables area and structure (a = 0.05). Results: Higher proportions of injury-events were reported for females (60\%) and athletes of the older age group (66\%) than males and younger athletes. The most frequently injured area was the lower extremity (47\%) followed by the spine (30.5\%) and the upper extremity (12.5\%). Acute injuries were mainly located at the lower extremity (74.5\%), while overuse injuries were predominantly observed at the lower extremity (41\%) as well as the spine (36.5\%). Joints (34\%), muscles (22\%), and tendons (21.5\%) were found to be the most often affected structures. The injured structures were different between the age groups (p = 0.022), with the older age group presenting three times more frequent with ligament pathology events (5.5\%/2\%) and less frequent with bony problems (11\%/20.5\%) than athletes of the younger age group. The injured area differed between the sexes (p = 0.005), with males having fewer spine injury-events (25.5\%/34\%) but more upper extremity injuries (18\%/9\%) than females. Regression analysis showed statistically significant influence for BMI (p = 0.002) and age (p = 0.015) on structure, whereas the area was significantly influenced by sex (p = 0.005). Conclusion: Events of soft-tissue overuse injuries are the most common reasons resulting in orthopedic presentations of adolescent elite athletes. Mostly, the lower extremity and the spine are affected, while sex and age characteristics on affected area and structure must be considered. Therefore, prevention strategies addressing the injury-event profiles should already be implemented in early adolescence taking age, sex as well as injury entity into account.}, language = {en} } @phdthesis{AbdelwahabHusseinAbdelwahabElsayed2019, author = {Abdelwahab Hussein Abdelwahab Elsayed, Ahmed}, title = {Probabilistic, deep, and metric learning for biometric identification from eye movements}, doi = {10.25932/publishup-46798}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-467980}, school = {Universit{\"a}t Potsdam}, pages = {vi, 65}, year = {2019}, abstract = {A central insight from psychological studies on human eye movements is that eye movement patterns are highly individually characteristic. They can, therefore, be used as a biometric feature, that is, subjects can be identified based on their eye movements. This thesis introduces new machine learning methods to identify subjects based on their eye movements while viewing arbitrary content. The thesis focuses on probabilistic modeling of the problem, which has yielded the best results in the most recent literature. The thesis studies the problem in three phases by proposing a purely probabilistic, probabilistic deep learning, and probabilistic deep metric learning approach. In the first phase, the thesis studies models that rely on psychological concepts about eye movements. Recent literature illustrates that individual-specific distributions of gaze patterns can be used to accurately identify individuals. In these studies, models were based on a simple parametric family of distributions. Such simple parametric models can be robustly estimated from sparse data, but have limited flexibility to capture the differences between individuals. Therefore, this thesis proposes a semiparametric model of gaze patterns that is flexible yet robust for individual identification. These patterns can be understood as domain knowledge derived from psychological literature. Fixations and saccades are examples of simple gaze patterns. The proposed semiparametric densities are drawn under a Gaussian process prior centered at a simple parametric distribution. Thus, the model will stay close to the parametric class of densities if little data is available, but it can also deviate from this class if enough data is available, increasing the flexibility of the model. The proposed method is evaluated on a large-scale dataset, showing significant improvements over the state-of-the-art. Later, the thesis replaces the model based on gaze patterns derived from psychological concepts with a deep neural network that can learn more informative and complex patterns from raw eye movement data. As previous work has shown that the distribution of these patterns across a sequence is informative, a novel statistical aggregation layer called the quantile layer is introduced. It explicitly fits the distribution of deep patterns learned directly from the raw eye movement data. The proposed deep learning approach is end-to-end learnable, such that the deep model learns to extract informative, short local patterns while the quantile layer learns to approximate the distributions of these patterns. Quantile layers are a generic approach that can converge to standard pooling layers or have a more detailed description of the features being pooled, depending on the problem. The proposed model is evaluated in a large-scale study using the eye movements of subjects viewing arbitrary visual input. The model improves upon the standard pooling layers and other statistical aggregation layers proposed in the literature. It also improves upon the state-of-the-art eye movement biometrics by a wide margin. Finally, for the model to identify any subject — not just the set of subjects it is trained on — a metric learning approach is developed. Metric learning learns a distance function over instances. The metric learning model maps the instances into a metric space, where sequences of the same individual are close, and sequences of different individuals are further apart. This thesis introduces a deep metric learning approach with distributional embeddings. The approach represents sequences as a set of continuous distributions in a metric space; to achieve this, a new loss function based on Wasserstein distances is introduced. The proposed method is evaluated on multiple domains besides eye movement biometrics. This approach outperforms the state of the art in deep metric learning in several domains while also outperforming the state of the art in eye movement biometrics.}, language = {en} } @phdthesis{Guislain2019, author = {Guislain, Alexis}, title = {Eco-physiological consequences of fluctuating light on phytoplankton}, doi = {10.25932/publishup-46927}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-469272}, school = {Universit{\"a}t Potsdam}, pages = {161}, year = {2019}, abstract = {Phytoplankton growth depends not only on the mean intensity but also on the dynamics of the light supply. The nonlinear light-dependency of growth is characterized by a small number of basic parameters: the compensation light intensity PARcompμ, where production and losses are balanced, the growth efficiency at sub-saturating light αµ, and the maximum growth rate at saturating light µmax. In surface mixed layers, phytoplankton may rapidly move between high light intensities and almost darkness. Because of the different frequency distribution of light and/or acclimation processes, the light-dependency of growth may differ between constant and fluctuating light. Very few studies measured growth under fluctuating light at a sufficient number of mean light intensities to estimate the parameters of the growth-irradiance relationship. Hence, the influence of light dynamics on µmax, αµ and PARcompμ are still largely unknown. By extension, accurate modelling predictions of phytoplankton development under fluctuating light exposure remain difficult to make. This PhD thesis does not intend to directly extrapolate few experimental results to aquatic systems - but rather improving the mechanistic understanding of the variation of the light-dependency of growth under light fluctuations and effects on phytoplankton development. In Lake TaiHu and at the Three Gorges Reservoir (China), we incubated phytoplankton communities in bottles placed either at fixed depths or moved vertically through the water column to mimic vertical mixing. Phytoplankton at fixed depths received only the diurnal changes in light (defined as constant light regime), while phytoplankton received rapidly fluctuating light by superimposing the vertical light gradient on the natural sinusoidal diurnal sunlight. The vertically moved samples followed a circular movement with 20 min per revolution, replicating to some extent the full overturn of typical Langmuir cells. Growth, photosynthesis, oxygen production and respiration of communities (at Lake TaiHu) were measured. To complete these investigations, a physiological experiment was performed in the laboratory on a toxic strain of Microcystis aeruginosa (FACBH 1322) incubated under 20 min period fluctuating light. Here, we measured electron transport rates and net oxygen production at a much higher time resolution (single minute timescale). The present PhD thesis provides evidence for substantial effects of fluctuating light on the eco-physiology of phytoplankton. Both experiments performed under semi-natural conditions in Lake TaiHu and at the Three Gorges Reservoir gave similar results. The significant decline in community growth efficiencies αµ under fluctuating light was caused for a great share by different frequency distribution of light intensities that shortened the effective daylength for production. The remaining gap in community αµ was attributed to species-specific photoacclimation mechanisms and to light-dependent respiratory losses. In contrast, community maximal growth rates µmax were similar between incubations at constant and fluctuating light. At daily growth saturating light supply, differences in losses for biosynthesis between the two light regimes were observed. Phytoplankton experiencing constant light suffered photo-inhibition - leading to photosynthesis foregone and additional respiratory costs for photosystems repair. On the contrary, intermittent exposure to low and high light intensities prevented photo-inhibition of mixed algae but forced them to develop alternative light strategy. They better harvested and exploited surface irradiance by enhancing their photosynthesis. In the laboratory, we showed that Microcystis aeruginosa increased its oxygen consumption by dark respiration in the light few minutes only after exposure to increasing light intensities. More, we proved that within a simulated Langmuir cell, the net production at saturating light and the compensation light intensity for production at limiting light are positively related. These results are best explained by an accumulation of photosynthetic products at increasing irradiance and mobilization of these fresh resources by rapid enhancement of dark respiration for maintenance and biosynthesis at decreasing irradiance. At the daily timescale, we showed that the enhancement of photosynthesis at high irradiance for biosynthesis of species increased their maintenance respiratory costs at limiting light. Species-specific growth at saturating light µmax and compensation light intensity for growth PARcompμ of species incubated in Lake TaiHu were positively related. Because of this species-specific physiological tradeoff, species displayed different light affinities to limiting and saturating light - thereby exhibiting a gleaner-opportunist tradeoff. In Lake TaiHu, we showed that inter-specific differences in light acquisition traits (µmax and PARcompμ) allowed coexis¬tence of species on a gradient of constant light while avoiding competitive exclusion. More interestingly we demonstrated for the first time that vertical mixing (inducing fluctuating light supply for phytoplankton) may alter or even reverse the light utilization strategies of species within couple of days. The intra-specific variation in traits under fluctuating light increased the niche space for acclimated species, precluding competitive exclusion. Overall, this PhD thesis contributes to a better understanding of phytoplankton eco-physiology under fluctuating light supply. This work could enhance the quality of predictions of phytoplankton development under certain weather conditions or climate change scenarios.}, language = {en} } @misc{ClahsenJessen2019, author = {Clahsen, Harald and Jessen, Anna}, title = {Do bilingual children lag behind?}, series = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, number = {682}, issn = {1866-8364}, doi = {10.25932/publishup-46972}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-469727}, pages = {27}, year = {2019}, abstract = {The current study investigates how bilingual children encode and produce morphologically complex words. We employed a silent-production-plus-delayed-vocalization paradigm in which event-related brain potentials (ERPs) were recorded during silent encoding of inflected words which were subsequently cued to be overtly produced. The bilingual children's spoken responses and their ERPs were compared to previous datasets from monolingual children on the same task. We found an enhanced negativity for regular relative to irregular forms during silent production in both bilingual children's languages, replicating the ERP effect previously obtained from monolingual children. Nevertheless, the bilingual children produced more morphological errors (viz. over-regularizations) than monolingual children. We conclude that mechanisms of morphological encoding (as measured by ERPs) are parallel for bilingual and monolingual children, and that the increased over-regularization rates are due to their reduced exposure to each of the two languages (relative to monolingual children).}, language = {en} } @misc{GarciaRoeserHoehle2019, author = {Garcia, Rowena and Roeser, Jens and H{\"o}hle, Barbara}, title = {Children's online use of word order and morphosyntactic markers in Tagalog thematic role assignment}, series = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, number = {673}, issn = {1866-8364}, doi = {10.25932/publishup-46967}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-469678}, pages = {533 -- 555}, year = {2019}, abstract = {We investigated whether Tagalog-speaking children incrementally interpret the first noun as the agent, even if verbal and nominal markers for assigning thematic roles are given early in Tagalog sentences. We asked five- and seven-year-old children and adult controls to select which of two pictures of reversible actions matched the sentence they heard, while their looks to the pictures were tracked. Accuracy and eye-tracking data showed that agent-initial sentences were easier to comprehend than patient-initial sentences, but the effect of word order was modulated by voice. Moreover, our eye-tracking data provided evidence that, by the first noun phrase, seven-year-old children looked more to the target in the agent-initial compared to the patient-initial conditions, but this word order advantage was no longer observed by the second noun phrase. The findings support language processing and acquisition models which emphasize the role of frequency in developing heuristic strategies (e.g., Chang, Dell, \& Bock, 2006).}, language = {en} } @misc{Fandinno2019, author = {Fandinno, Jorge}, title = {Founded (auto)epistemic equilibrium logic satisfies epistemic splitting}, series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, number = {1060}, issn = {1866-8372}, doi = {10.25932/publishup-46968}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-469685}, pages = {671 -- 687}, year = {2019}, abstract = {In a recent line of research, two familiar concepts from logic programming semantics (unfounded sets and splitting) were extrapolated to the case of epistemic logic programs. The property of epistemic splitting provides a natural and modular way to understand programs without epistemic cycles but, surprisingly, was only fulfilled by Gelfond's original semantics (G91), among the many proposals in the literature. On the other hand, G91 may suffer from a kind of self-supported, unfounded derivations when epistemic cycles come into play. Recently, the absence of these derivations was also formalised as a property of epistemic semantics called foundedness. Moreover, a first semantics proved to satisfy foundedness was also proposed, the so-called Founded Autoepistemic Equilibrium Logic (FAEEL). In this paper, we prove that FAEEL also satisfies the epistemic splitting property something that, together with foundedness, was not fulfilled by any other approach up to date. To prove this result, we provide an alternative characterisation of FAEEL as a combination of G91 with a simpler logic we called Founded Epistemic Equilibrium Logic (FEEL), which is somehow an extrapolation of the stable model semantics to the modal logic S5.}, language = {en} } @misc{AguadoCabalarFandinnoetal.2019, author = {Aguado, Felicidad and Cabalar, Pedro and Fandinno, Jorge and Pearce, David and Perez, Gilberto and Vidal, Concepcion}, title = {Revisiting explicit negation in answer set programming}, series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, number = {1104}, issn = {1866-8372}, doi = {10.25932/publishup-46969}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-469697}, pages = {908 -- 924}, year = {2019}, abstract = {A common feature in Answer Set Programming is the use of a second negation, stronger than default negation and sometimes called explicit, strong or classical negation. This explicit negation is normally used in front of atoms, rather than allowing its use as a regular operator. In this paper we consider the arbitrary combination of explicit negation with nested expressions, as those defined by Lifschitz, Tang and Turner. We extend the concept of reduct for this new syntax and then prove that it can be captured by an extension of Equilibrium Logic with this second negation. We study some properties of this variant and compare to the already known combination of Equilibrium Logic with Nelson's strong negation.}, language = {en} } @misc{Felser2019, author = {Felser, Claudia}, title = {Do processing resource limitations shape heritage language grammars?}, series = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, number = {676}, issn = {1866-8364}, doi = {10.25932/publishup-46970}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-469703}, pages = {23 -- 24}, year = {2019}, abstract = {kein abstract vorhanden}, language = {en} } @misc{CzapkaWotschackKlassertetal.2019, author = {Czapka, Sophia and Wotschack, Christiane and Klassert, Annegret and Festman, Julia}, title = {A path to the bilingual advantage}, series = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, number = {688}, issn = {1866-8364}, doi = {10.25932/publishup-46973}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-469736}, pages = {13}, year = {2019}, abstract = {Matching participants (as suggested by Hope, 2015) may be one promising option for research on a potential bilingual advantage in executive functions (EF). In this study we first compared performances in three EF-tasks of a naturally heterogeneous sample of monolingual (n = 69, age = 9.0 y) and multilingual children (n = 57, age = 9.3 y). Secondly, we meticulously matched participants pairwise to obtain two highly homogeneous groups to rerun our analysis and investigate a potential bilingual advantage. The initally disadvantaged multilinguals (regarding socioeconomic status and German lexicon size) performed worse in updating and response inhibition, but similarly in interference inhibition. This indicates that superior EF compensate for the detrimental effects of the background variables. After matching children pairwise on age, gender, intelligence, socioeconomic status and German lexicon size, performances became similar except for interference inhibition. Here, an advantage for multilinguals in the form of globally reduced reaction times emerged, indicating a bilingual executive processing advantage.}, language = {en} } @phdthesis{Vranic2019, author = {Vranic, Marija}, title = {3D Structure of the biomarker hepcidin-25 in its native state}, doi = {10.25932/publishup-45929}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-459295}, school = {Universit{\"a}t Potsdam}, pages = {xii, 135}, year = {2019}, abstract = {Hepcidin-25 (Hep-25) plays a crucial role in the control of iron homeostasis. Since the dysfunction of the hepcidin pathway leads to multiple diseases as a result of iron imbalance, hepcidin represents a potential target for the diagnosis and treatment of disorders of iron metabolism. Despite intense research in the last decade targeted at developing a selective immunoassay for iron disorder diagnosis and treatment and better understanding the ferroportin-hepcidin interaction, questions remain. The key to resolving these underlying questions is acquiring exact knowledge of the 3D structure of native Hep-25. Since it was determined that the N-terminus, which is responsible for the bioactivity of Hep-25, contains a small Cu(II)-binding site known as the ATCUN motif, it was assumed that the Hep-25-Cu(II) complex is the native, bioactive form of the hepcidin. This structure has thus far not been elucidated in detail. Owing to the lack of structural information on metal-bound Hep-25, little is known about its possible biological role in iron metabolism. Therefore, this work is focused on structurally characterizing the metal-bound Hep-25 by NMR spectroscopy and molecular dynamics simulations. For the present work, a protocol was developed to prepare and purify properly folded Hep-25 in high quantities. In order to overcome the low solubility of Hep-25 at neutral pH, we introduced the C-terminal DEDEDE solubility tag. The metal binding was investigated through a series of NMR spectroscopic experiments to identify the most affected amino acids that mediate metal coordination. Based on the obtained NMR data, a structural calculation was performed in order to generate a model structure of the Hep-25-Ni(II) complex. The DEDEDE tag was excluded from the structural calculation due to a lack of NMR restraints. The dynamic nature and fast exchange of some of the amide protons with solvent reduced the overall number of NMR restraints needed for a high-quality structure. The NMR data revealed that the 20 Cterminal Hep-25 amino acids experienced no significant conformational changes, compared to published results, as a result of a pH change from pH 3 to pH 7 and metal binding. A 3D model of the Hep-25-Ni(II) complex was constructed from NMR data recorded for the hexapeptideNi(II) complex and Hep-25-DEDEDE-Ni(II) complex in combination with the fixed conformation of 19 C-terminal amino acids. The NMR data of the Hep-25-DEDEDE-Ni(II) complex indicates that the ATCUN motif moves independently from the rest of the structure. The 3D model structure of the metal-bound Hep-25 allows for future works to elucidate hepcidin's interaction with its receptor ferroportin and should serve as a starting point for the development of antibodies with improved selectivity.}, language = {en} } @phdthesis{Schmidt2019, author = {Schmidt, Martin}, title = {Fragmentation of landscapes: modelling ecosystem services of transition zones}, doi = {10.25932/publishup-44294}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-442942}, school = {Universit{\"a}t Potsdam}, pages = {XV, 103}, year = {2019}, abstract = {For millennia, humans have affected landscapes all over the world. Due to horizontal expansion, agriculture plays a major role in the process of fragmentation. This process is caused by a substitution of natural habitats by agricultural land leading to agricultural landscapes. These landscapes are characterized by an alternation of agriculture and other land use like forests. In addition, there are landscape elements of natural origin like small water bodies. Areas of different land use are beside each other like patches, or fragments. They are physically distinguishable which makes them look like a patchwork from an aerial perspective. These fragments are each an own ecosystem with conditions and properties that differ from their adjacent fragments. As open systems, they are in exchange of information, matter and energy across their boundaries. These boundary areas are called transition zones. Here, the habitat properties and environmental conditions are altered compared to the interior of the fragments. This changes the abundance and the composition of species in the transition zones, which in turn has a feedback effect on the environmental conditions. The literature mainly offers information and insights on species abundance and composition in forested transition zones. Abiotic effects, the gradual changes in energy and matter, received less attention. In addition, little is known about non-forested transition zones. For example, the effects on agricultural yield in transition zones of an altered microclimate, matter dynamics or different light regimes are hardly researched or understood. The processes in transition zones are closely connected with altered provisioning and regulating ecosystem services. To disentangle the mechanisms and to upscale the effects, models can be used. My thesis provides insights into these topics: literature was reviewed and a conceptual framework for the quantitative description of gradients of matter and energy in transition zones was introduced. The results of measurements of environmental gradients like microclimate, aboveground biomass and soil carbon and nitrogen content are presented that span from within the forest into arable land. Both the measurements and the literature review could not validate a transition zone of 100 m for abiotic effects. Although this value is often reported and used in the literature, it is likely to be smaller. Further, the measurements suggest that on the one hand trees in transition zones are smaller compared to those in the interior of the fragments, while on the other hand less biomass was measured in the arable lands' transition zone. These results support the hypothesis that less carbon is stored in the aboveground biomass in transition zones. The soil at the edge (zero line) between adjacent forest and arable land contains more nitrogen and carbon content compared to the interior of the fragments. One-year measurements in the transition zone also provided evidence that microclimate is different compared to the fragments' interior. To predict the possible yield decreases that transition zones might cause, a modelling approach was developed. Using a small virtual landscape, I modelled the effect of a forest fragment shading the adjacent arable land and the effects of this on yield using the MONICA crop growth model. In the transition zone yield was less compared to the interior due to shading. The results of the simulations were upscaled to the landscape level and exemplarily calculated for the arable land of a whole region in Brandenburg, Germany. The major findings of my thesis are: (1) Transition zones are likely to be much smaller than assumed in the scientific literature; (2) transition zones aren't solely a phenomenon of forested ecosystems, but significantly extend into arable land as well; (3) empirical and modelling results show that transition zones encompass biotic and abiotic changes that are likely to be important to a variety of agricultural landscape ecosystem services.}, language = {en} } @misc{KniggeKrauskopfWagner2019, author = {Knigge, Michel and Krauskopf, Karsten and Wagner, Simon}, title = {Improving Socio-Emotional Competencies Using a Staged Video-Based Learning Program?}, series = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, number = {593}, issn = {1866-8364}, doi = {10.25932/publishup-44286}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-442868}, pages = {14}, year = {2019}, abstract = {Relationship quality between teachers and their students is a critical aspect for well-being and effective learning in school. Accordingly, teacher training should promote competencies for creating and maintaining positive relationships in the classroom. The Helga Breuninger Foundation developed a video-based online training (Intus³) that intends to focus on student teachers' interpersonal competencies by reflecting on staged videos. Although this training is well-designed, there is only little empirical evidence in general and so far no experimental research investigating the effects of Intus³. Accordingly, we investigated whether this program is able to improve the capacities of student teachers' interpersonal competencies, affective well-being, and affective attitudes toward challenging students. We conducted two randomized experimental studies (n1 = 132, n2 = 242) within lectures in teacher education at the University of Potsdam, introducing the basics of inclusive education in two consecutive semesters. We compared groups first working with Intus³ to waiting control groups that wrote an expository text based on empirical research discussing the relevance of teacher-student relationships with a longitudinal design with four measurement points. Latent change models showed that prior work with Intus³ showed few effects but complex effects in comparison to the prior text work groups. In the larger and extended study 2, an increase of empathic concern was significant after the prior work with Intus³. The results will be discussed with the perspective of the potential of further development of online training courses for affective learning for teachers and teacher students.}, language = {en} } @phdthesis{He2019, author = {He, Hai}, title = {Exploring and engineering formaldehyde assimilation}, doi = {10.25932/publishup-47386}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-473867}, school = {Universit{\"a}t Potsdam}, pages = {vi, 105}, year = {2019}, abstract = {Increasing concerns regarding the environmental impact of our chemical production have shifted attention towards possibilities for sustainable biotechnology. One-carbon (C1) compounds, including methane, methanol, formate and CO, are promising feedstocks for future bioindustry. CO2 is another interesting feedstock, as it can also be transformed using renewable energy to other C1 feedstocks for use. While formaldehyde is not suitable as a feedstock due to its high toxicity, it is a central intermediate in the process of C1 assimilation. This thesis explores formaldehyde metabolism and aims to engineer formaldehyde assimilation in the model organism Escherichia coli for the future C1-based bioindustry. The first chapter of the thesis aims to establish growth of E. coli on formaldehyde via the most efficient naturally occurring route, the ribulose monophosphate pathway. Linear variants of the pathway were constructed in multiple-gene knockouts strains, coupling E. coli growth to the activities of the key enzymes of the pathway. Formaldehyde-dependent growth was achieved in rationally designed strains. In the final strain, the synthetic pathway provides the cell with almost all biomass and energy requirements. In the second chapter, taking advantage of the unique feature of its reactivity, formaldehyde assimilation via condensation with glycine and pyruvate by two promiscuous aldolases was explored. Facilitated by these two reactions, the newly designed homoserine cycle is expected to support higher yields of a wide array of products than its counterparts. By dividing the pathway into segments and coupling them to the growth of dedicated strains, all pathway reactions were demonstrated to be sufficiently active. The work paves a way for future implementation of a highly efficient route for C1 feedstocks into commodity chemicals. In the third chapter, the in vivo rate of the spontaneous formaldehyde tetrahydrofolate condensation to methylene-tetrahydrofolate was assessed in order to evaluate its applicability as a biotechnological process. Tested within an E. coli strain deleted in essential genes for native methylene-tetrahydrofolate biosynthesis, the reaction was shown to support the production of this essential intermediate. However, only low growth rates were observed and only at high formaldehyde concentrations. Computational analysis dependent on in vivo evidence from this strain deduced the slow rate of this spontaneous reaction, thus ruling out its substantial contribution to growth on C1 feedstocks. The reactivity of formaldehyde makes it highly toxic. In the last chapter, the formation of thioproline, the condensation product of cysteine and formaldehyde, was confirmed to contribute this toxicity effect. Xaa-Pro aminopeptidase (PepP), which genetically links with folate metabolism, was shown to hydrolyze thioproline-containing peptides. Deleting pepP increased strain sensitivity to formaldehyde, pointing towards the toxicity of thioproline-containing peptides and the importance of their removal. The characterization in this study could be useful in handling this toxic intermediate. Overall, this thesis identified challenges related to formaldehyde metabolism and provided novel solutions towards a future bioindustry based on sustainable C1 feedstocks in which formaldehyde serves as a key intermediate.}, language = {en} } @article{Weiss2019, author = {Weiß, Norman}, title = {Regionalisierung des Menschenrechtsschutzes - Funktionen, Strukturen und Herausforderungen}, series = {MenschenRechtsMagazin : MRM ; Informationen, Meinungen, Analysen}, volume = {24}, journal = {MenschenRechtsMagazin : MRM ; Informationen, Meinungen, Analysen}, number = {1/2}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, doi = {10.25932/publishup-47417}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-474170}, pages = {38 -- 52}, year = {2019}, language = {de} } @article{Broenner2019, author = {Br{\"o}nner, Felix}, title = {Koloniale Kontinuit{\"a}ten im Menschenrechtsdiskurs}, series = {MenschenRechtsMagazin : MRM ; Informationen, Meinungen, Analysen}, volume = {24}, journal = {MenschenRechtsMagazin : MRM ; Informationen, Meinungen, Analysen}, number = {1/2}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {1434-2820}, doi = {10.25932/publishup-47416}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-474162}, pages = {24 -- 37}, year = {2019}, language = {de} } @article{Wagner2019, author = {Wagner, Marlene}, title = {Bericht {\"u}ber die T{\"a}tigkeit des Menschenrechtsausschusses der Vereinten Nationen im Jahre 2018 - Teil II: Individualbeschwerden}, series = {MenschenRechtsMagazin : MRM ; Informationen, Meinungen, Analysen}, volume = {24}, journal = {MenschenRechtsMagazin : MRM ; Informationen, Meinungen, Analysen}, number = {1/2}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, issn = {1434-2820}, doi = {10.25932/publishup-47422}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-474223}, pages = {136 -- 148}, year = {2019}, language = {de} } @misc{AsgarimehrWickertReich2019, author = {Asgarimehr, Milad and Wickert, Jens and Reich, Sebastian}, title = {Evaluating impact of rain attenuation on space-borne GNSS Reflectometry wind speeds}, series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, number = {1132}, issn = {1866-8372}, doi = {10.25932/publishup-47344}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-473441}, pages = {20}, year = {2019}, abstract = {The novel space-borne Global Navigation Satellite System Reflectometry (GNSS-R) technique has recently shown promise in monitoring the ocean state and surface wind speed with high spatial coverage and unprecedented sampling rate. The L-band signals of GNSS are structurally able to provide a higher quality of observations from areas covered by dense clouds and under intense precipitation, compared to those signals at higher frequencies from conventional ocean scatterometers. As a result, studying the inner core of cyclones and improvement of severe weather forecasting and cyclone tracking have turned into the main objectives of GNSS-R satellite missions such as Cyclone Global Navigation Satellite System (CYGNSS). Nevertheless, the rain attenuation impact on GNSS-R wind speed products is not yet well documented. Evaluating the rain attenuation effects on this technique is significant since a small change in the GNSS-R can potentially cause a considerable bias in the resultant wind products at intense wind speeds. Based on both empirical evidence and theory, wind speed is inversely proportional to derived bistatic radar cross section with a natural logarithmic relation, which introduces high condition numbers (similar to ill-posed conditions) at the inversions to high wind speeds. This paper presents an evaluation of the rain signal attenuation impact on the bistatic radar cross section and the derived wind speed. This study is conducted simulating GNSS-R delay-Doppler maps at different rain rates and reflection geometries, considering that an empirical data analysis at extreme wind intensities and rain rates is impossible due to the insufficient number of observations from these severe conditions. Finally, the study demonstrates that at a wind speed of 30 m/s and incidence angle of 30 degrees, rain at rates of 10, 15, and 20 mm/h might cause overestimation as large as approximate to 0.65 m/s (2\%), 1.00 m/s (3\%), and 1.3 m/s (4\%), respectively, which are still smaller than the CYGNSS required uncertainty threshold. The simulations are conducted in a pessimistic condition (severe continuous rainfall below the freezing height and over the entire glistening zone) and the bias is expected to be smaller in size in real environments.}, language = {en} } @misc{ZollDiehlSiebert2019, author = {Zoll, Felix and Diehl, Katharina and Siebert, Rosemarie}, title = {Integrating sustainability goals in innovation processes}, series = {Postprints der Universit{\"a}t Potsdam : Mathematisch Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Mathematisch Naturwissenschaftliche Reihe}, number = {1036}, issn = {1866-8372}, doi = {10.25932/publishup-47342}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-473420}, pages = {17}, year = {2019}, abstract = {The innovative dual-purpose chicken approach aims at contributing to the transition towards sustainable poultry production by avoiding the culling of male chickens. To successfully integrate sustainability aspects into innovation, goal congruency among actors and clearly communicating the added value within the actor network and to consumers is needed. The challenge of identifying common sustainability goals calls for decision support tools. The objectives of our research were to investigate whether the tool could assist in improving communication and marketing with respect to sustainability and optimizing the value chain organization. Three actor groups participated in the tool application, in which quantitative and qualitative data were collected. The results showed that there were manifold sustainability goals within the innovation network, but only some goals overlapped, and the perception of their implementation also diverged. While easily marketable goals such as 'animal welfare' were perceived as being largely implemented, economic goals were prioritized less often, and the implementation was perceived as being rather low. By visualizing congruencies and differences in the goals, the tool helped identify fields of action, such as improved information flows and prompted thinking processes. We conclude that the tool is useful for managing complex decision processes with several actors involved.}, language = {en} } @misc{MenzelHeuerMilonni2019, author = {Menzel, Ralf and Heuer, Axel and Milonni, Peter W.}, title = {Entanglement, complementarity, and vacuum fields in spontaneous parametric down-conversion}, series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, number = {1077}, issn = {1866-8372}, doi = {10.25932/publishup-47354}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-473542}, pages = {16}, year = {2019}, abstract = {Using two crystals for spontaneous parametric down-conversion in a parallel setup, we observe two-photon interference with high visibility. The high visibility is consistent with complementarity and the absence of which-path information. The observations are explained as the effects of entanglement or equivalently in terms of interfering probability amplitudes and also by the calculation of a second-order field correlation function in the Heisenberg picture. The latter approach brings out explicitly the role of the vacuum fields in the down-conversion at the crystals and in the photon coincidence counting. For comparison, we show that the Hong-Ou-Mandel dip can be explained by the same approach in which the role of the vacuum signal and idler fields, as opposed to entanglement involving vacuum states, is emphasized. We discuss the fundamental limitations of a theory in which these vacuum fields are treated as classical, stochastic fields.}, language = {en} } @misc{ThomasLietz2019, author = {Thomas, Linda and Lietz, Christian}, title = {Maßnahmen zur Erh{\"o}hung der Sichtbarkeit des wissenschaftlichen Outputs}, doi = {10.25932/publishup-47347}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-473473}, pages = {13}, year = {2019}, abstract = {Die Universit{\"a}t Potsdam hat 2018 zum zweiten Mal erfolgreich am Times Higher Education-Ranking (THE-Ranking) teilgenommen. Hierf{\"u}r wurde erneut das Publikationsaufkommen inklusive der Verbreitung der IDs von Autorinnen und Autoren, wie bspw. ORCiD, Researcher-ID oder Google Scholar-ID, ermittelt. Die aus den Erkenntnissen der ersten bibliometrischen Output-Analyse abgeleiteten Maßnahmen wurden nun hinsichtlich ihrer Wirksamkeit beurteilt. Der vorliegende Artikel vergleicht die Ergebnisse beider Analysen und thematisiert die Entwicklungen und Implikationen seit dem Ergreifen der ersten Maßnahmen.}, language = {de} } @misc{Ganghof2019, author = {Ganghof, Steffen}, title = {Designing Democratic Constitutions}, series = {Postprints der Universit{\"a}t Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe}, number = {120}, issn = {1867-5808}, doi = {10.25932/publishup-44540}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-445408}, pages = {13}, year = {2019}, abstract = {This article analyses salient trade-offs in the design of democracy. It grounds this analysis in a distinction between two basic models of democracy: simple and complex majoritarianism. These models differ not only in their electoral and party systems, but also in the style of coalition-building. Simple majoritarianism concentrates executive power in a single majority party; complex majoritarianism envisions the formation of shifting, issue-specific coalitions among multiple parties whose programs differ across multiple conflict dimensions. The latter pattern of coalition formation is very difficult to create and sustain under pure parliamentary government. A separation of powers between executive and legislature can facilitate such a pattern, while also achieving central goals of simple majoritarianism: identifiable cabinet alternatives before the election and stable cabinets afterward. The separation of powers can thus balance simple and complex majoritarianism in ways that are unavailable under parliamentarism. The article also compares the presidential and semi-parliamentary versions of the separation of powers. It argues that the latter has important advantages, e.g., when it comes to resolving inter-branch deadlock, as it avoids the concentration of executive power in a single human being.}, language = {en} } @article{Faierstein2019, author = {Faierstein, Morris M.}, title = {The Melits Yosher and the Audience for Early Modern Yiddish Literature}, series = {PaRDeS: Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS: Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-44590}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-445900}, pages = {23 -- 42}, year = {2019}, abstract = {Rabbi Jacob ben Isaac of Yanova (d. 1623) is best known as the author of the Ze'enah U-Re'enah; the Melits Yosher ("Intercessor before God") is one of his lesser known works. It was first published in Lublin in 1622 and reprinted once in Amsterdam in 1688. Like the Ze'enah U-Re'enah, it was a Torah commentary, but composed for men who had some yeshivah education, but who could not continue their studies. The commentary on the Song of Songs by Isaac Sulkes is another Yiddish work that addresses the same audience as the Melits Yosher. The purpose of this article is to bring to scholarly attention an audience that has not been noticed or studied in the previous scholarship on early modern Yiddish literature.}, language = {en} } @article{Drori2019, author = {Drori, Danielle}, title = {A Translator against Translation}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-44591}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-445912}, pages = {43 -- 56}, year = {2019}, abstract = {This article explores an instructive case of translation critique against the background of the rise of Zionism in Europe at the turn of the previous century. It seeks to answer the question: Why did David Frishman, one of the most prolific Hebrew writers and translators of the late 1890s and early 1900s, criticize Vladimir Jabotinsky's Russian translation of Hayim Nahman Bialik's Hebrew poems? Both Bialik and Jabotinsky were major figures in the field of Hebrew culture and Zionist politics in the early 1900s, while Frishman generally shunned partisan activism and consistently presented himself as devoted solely to literature. Frishman perceived literature, nevertheless, as a political arena, viewing translation, in particular, as a locus of ideological debate. Writing from the viewpoint of a political minority at a time in which the Hebrew translation industry in Europe gained momentum, Frishman deemed translation a tool for cementing cultural hierarchies. He anticipated later analyses of the act and products of translation as reflective of intercultural tensions. The article suggests, more specifically, that it was Frishman's view of the Hebrew Bible that informed his "avant-garde" stance on translation.}, language = {en} } @misc{RingelSomogyvariJalalietal.2019, author = {Ringel, Lisa Maria and Somogyv{\´a}ri, M{\´a}rk and Jalali, Mohammadreza and Bayer, Peter}, title = {Comparison of hydraulic and tracer tomography for discrete fracture network inversion}, series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, number = {922}, issn = {1866-8372}, doi = {10.25932/publishup-44261}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-442616}, pages = {19}, year = {2019}, abstract = {Fractures serve as highly conductive preferential flow paths for fluids in rocks, which are difficult to exactly reconstruct in numerical models. Especially, in low-conductive rocks, fractures are often the only pathways for advection of solutes and heat. The presented study compares the results from hydraulic and tracer tomography applied to invert a theoretical discrete fracture network (DFN) that is based on data from synthetic cross-well testing. For hydraulic tomography, pressure pulses in various injection intervals are induced and the pressure responses in the monitoring intervals of a nearby observation well are recorded. For tracer tomography, a conservative tracer is injected in different well levels and the depth-dependent breakthrough of the tracer is monitored. A recently introduced transdimensional Bayesian inversion procedure is applied for both tomographical methods, which adjusts the fracture positions, orientations, and numbers based on given geometrical fracture statistics. The used Metropolis-Hastings-Green algorithm is refined by the simultaneous estimation of the measurement error's variance, that is, the measurement noise. Based on the presented application to invert the two-dimensional cross-section between source and the receiver well, the hydraulic tomography reveals itself to be more suitable for reconstructing the original DFN. This is based on a probabilistic representation of the inverted results by means of fracture probabilities.}, language = {en} } @misc{NueskenReichRozdeba2019, author = {N{\"u}sken, Nikolas and Reich, Sebastian and Rozdeba, Paul J.}, title = {State and parameter estimation from observed signal increments}, series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, number = {916}, issn = {1866-8372}, doi = {10.25932/publishup-44260}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-442609}, pages = {25}, year = {2019}, abstract = {The success of the ensemble Kalman filter has triggered a strong interest in expanding its scope beyond classical state estimation problems. In this paper, we focus on continuous-time data assimilation where the model and measurement errors are correlated and both states and parameters need to be identified. Such scenarios arise from noisy and partial observations of Lagrangian particles which move under a stochastic velocity field involving unknown parameters. We take an appropriate class of McKean-Vlasov equations as the starting point to derive ensemble Kalman-Bucy filter algorithms for combined state and parameter estimation. We demonstrate their performance through a series of increasingly complex multi-scale model systems.}, language = {en} } @misc{NoirayPopescuKillmeretal.2019, author = {Noiray, Aude and Popescu, Anisia and Killmer, Helene and Robertus, Elina and Kr{\"u}ger, Stella and Hintermeier, Lisa}, title = {Spoken Language Development and the Challenge of Skill Integration}, series = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, number = {598}, issn = {1866-8364}, doi = {10.25932/publishup-44472}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-444729}, pages = {19}, year = {2019}, abstract = {The development of phonological awareness, the knowledge of the structural combinatoriality of a language, has been widely investigated in relation to reading (dis)ability across languages. However, the extent to which knowledge of phonemic units may interact with spoken language organization in (transparent) alphabetical languages has hardly been investigated. The present study examined whether phonemic awareness correlates with coarticulation degree, commonly used as a metric for estimating the size of children's production units. A speech production task was designed to test for developmental differences in intra-syllabic coarticulation degree in 41 German children from 4 to 7 years of age. The technique of ultrasound imaging allowed for comparing the articulatory foundations of children's coarticulatory patterns. Four behavioral tasks assessing various levels of phonological awareness from large to small units and expressive vocabulary were also administered. Generalized additive modeling revealed strong interactions between children's vocabulary and phonological awareness with coarticulatory patterns. Greater knowledge of sub-lexical units was associated with lower intra-syllabic coarticulation degree and greater differentiation of articulatory gestures for individual segments. This interaction was mostly nonlinear: an increase in children's phonological proficiency was not systematically associated with an equivalent change in coarticulation degree. Similar findings were drawn between vocabulary and coarticulatory patterns. Overall, results suggest that the process of developing spoken language fluency involves dynamical interactions between cognitive and speech motor domains. Arguments for an integrated-interactive approach to skill development are discussed.}, language = {en} } @misc{BrandUlrich2019, author = {Brand, Ralf and Ulrich, Lukas}, title = {I Can See It in Your Face.}, series = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe}, number = {597}, issn = {1866-8364}, doi = {10.25932/publishup-44448}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-444481}, pages = {13}, year = {2019}, abstract = {The purpose of this study was to illustrate that people's affective valuation of exercise can be identified in their faces. The study was conducted with a software for automatic facial expression analysis and it involved testing the hypothesis that positive or negative affective valuation occurs spontaneously when people are reminded of exercise. We created a task similar to an emotional Stroop task, in which participants responded to exercise-related and control stimuli with a positive or negative facial expression (smile or frown) depending on whether the photo was presented upright or tilted. We further asked participants how much time they would normally spend for physical exercise, because we assumed that the affective valuation of those who exercise more would be more positive. Based on the data of 86 participants, regression analysis revealed that those who reported less exercise and a more negative reflective evaluation of exercise initiated negative facial expressions on exercise-related stimuli significantly faster than those who reported exercising more often. No significant effect was observed for smile responses. We suspect that responding with a smile to exercise-related stimuli was the congruent response for the majority of our participants, so that for them no Stroop interference occurred in the exercise-related condition. This study suggests that immediate negative affective reactions to exercise-related stimuli result from a postconscious automatic process and can be detected in the study participants' faces. It furthermore illustrates how methodological paradigms from social-cognition research (here: the emotional Stroop paradigm) can be adapted to collect and analyze biometric data for the investigation of exercisers' and non-exercisers' automatic valuations of exercise.}, language = {en} } @misc{CiaccioGunnar2019, author = {Ciaccio, Laura Anna and Gunnar, Jacob}, title = {Native speakers like affixes, L2 speakers like letters?}, series = {Postprints der Universit{\"a}t Potsdam : Philosophische Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Philosophische Reihe}, number = {169}, issn = {1866-8380}, doi = {10.25932/publishup-44461}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-444617}, pages = {22}, year = {2019}, abstract = {In an overt visual priming experiment, we investigate the role of orthography in native (L1) and non-native (L2) processing of German morphologically complex words. We compare priming effects for inflected and derived morphologically related prime-target pairs versus otherwise matched, purely orthographically related pairs. The results show morphological priming effects in both the L1 and L2 group, with no significant difference between inflection and derivation. However, L2 speakers, but not L1 speakers, also showed significant priming for orthographically related pairs. Our results support the claim that L2 speakers focus more on surface-level information such as orthography during visual word recognition. This can cause orthographic priming effects in morphologically related prime-target pairs, which may conceal L1-L2 differences in morphological processing.}, language = {en} } @phdthesis{Crisologo2019, author = {Crisologo, Irene}, title = {Using spaceborne radar platforms to enhance the homogeneity of weather radar calibration}, doi = {10.25932/publishup-44570}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-445704}, school = {Universit{\"a}t Potsdam}, pages = {xvii, 61}, year = {2019}, abstract = {Accurate weather observations are the keystone to many quantitative applications, such as precipitation monitoring and nowcasting, hydrological modelling and forecasting, climate studies, as well as understanding precipitation-driven natural hazards (i.e. floods, landslides, debris flow). Weather radars have been an increasingly popular tool since the 1940s to provide high spatial and temporal resolution precipitation data at the mesoscale, bridging the gap between synoptic and point scale observations. Yet, many institutions still struggle to tap the potential of the large archives of reflectivity, as there is still much to understand about factors that contribute to measurement errors, one of which is calibration. Calibration represents a substantial source of uncertainty in quantitative precipitation estimation (QPE). A miscalibration of a few dBZ can easily deteriorate the accuracy of precipitation estimates by an order of magnitude. Instances where rain cells carrying torrential rains are misidentified by the radar as moderate rain could mean the difference between a timely warning and a devastating flood. Since 2012, the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) has been expanding the country's ground radar network. We had a first look into the dataset from one of the longest running radars (the Subic radar) after devastating week-long torrential rains and thunderstorms in August 2012 caused by the annual southwestmonsoon and enhanced by the north-passing Typhoon Haikui. The analysis of the rainfall spatial distribution revealed the added value of radar-based QPE in comparison to interpolated rain gauge observations. However, when compared with local gauge measurements, severe miscalibration of the Subic radar was found. As a consequence, the radar-based QPE would have underestimated the rainfall amount by up to 60\% if they had not been adjusted by rain gauge observations—a technique that is not only affected by other uncertainties, but which is also not feasible in other regions of the country with very sparse rain gauge coverage. Relative calibration techniques, or the assessment of bias from the reflectivity of two radars, has been steadily gaining popularity. Previous studies have demonstrated that reflectivity observations from the Tropical Rainfall Measuring Mission (TRMM) and its successor, the Global Precipitation Measurement (GPM), are accurate enough to serve as a calibration reference for ground radars over low-to-mid-latitudes (± 35 deg for TRMM; ± 65 deg for GPM). Comparing spaceborne radars (SR) and ground radars (GR) requires cautious consideration of differences in measurement geometry and instrument specifications, as well as temporal coincidence. For this purpose, we implement a 3-D volume matching method developed by Schwaller and Morris (2011) and extended by Warren et al. (2018) to 5 years worth of observations from the Subic radar. In this method, only the volumetric intersections of the SR and GR beams are considered. Calibration bias affects reflectivity observations homogeneously across the entire radar domain. Yet, other sources of systematic measurement errors are highly heterogeneous in space, and can either enhance or balance the bias introduced by miscalibration. In order to account for such heterogeneous errors, and thus isolate the calibration bias, we assign a quality index to each matching SR-GR volume, and thus compute the GR calibration bias as a qualityweighted average of reflectivity differences in any sample of matching SR-GR volumes. We exemplify the idea of quality-weighted averaging by using beam blockage fraction (BBF) as a quality variable. Quality-weighted averaging is able to increase the consistency of SR and GR observations by decreasing the standard deviation of the SR-GR differences, and thus increasing the precision of the bias estimates. To extend this framework further, the SR-GR quality-weighted bias estimation is applied to the neighboring Tagaytay radar, but this time focusing on path-integrated attenuation (PIA) as the source of uncertainty. Tagaytay is a C-band radar operating at a lower wavelength and is therefore more affected by attenuation. Applying the same method used for the Subic radar, a time series of calibration bias is also established for the Tagaytay radar. Tagaytay radar sits at a higher altitude than the Subic radar and is surrounded by a gentler terrain, so beam blockage is negligible, especially in the overlapping region. Conversely, Subic radar is largely affected by beam blockage in the overlapping region, but being an SBand radar, attenuation is considered negligible. This coincidentally independent uncertainty contributions of each radar in the region of overlap provides an ideal environment to experiment with the different scenarios of quality filtering when comparing reflectivities from the two ground radars. The standard deviation of the GR-GR differences already decreases if we consider either BBF or PIA to compute the quality index and thus the weights. However, combining them multiplicatively resulted in the largest decrease in standard deviation, suggesting that taking both factors into account increases the consistency between the matched samples. The overlap between the two radars and the instances of the SR passing over the two radars at the same time allows for verification of the SR-GR quality-weighted bias estimation method. In this regard, the consistency between the two ground radars is analyzed before and after bias correction is applied. For cases when all three radars are coincident during a significant rainfall event, the correction of GR reflectivities with calibration bias estimates from SR overpasses dramatically improves the consistency between the two ground radars which have shown incoherent observations before correction. We also show that for cases where adequate SR coverage is unavailable, interpolating the calibration biases using a moving average can be used to correct the GR observations for any point in time to some extent. By using the interpolated biases to correct GR observations, we demonstrate that bias correction reduces the absolute value of the mean difference in most cases, and therefore improves the consistency between the two ground radars. This thesis demonstrates that in general, taking into account systematic sources of uncertainty that are heterogeneous in space (e.g. BBF) and time (e.g. PIA) allows for a more consistent estimation of calibration bias, a homogeneous quantity. The bias still exhibits an unexpected variability in time, which hints that there are still other sources of errors that remain unexplored. Nevertheless, the increase in consistency between SR and GR as well as between the two ground radars, suggests that considering BBF and PIA in a weighted-averaging approach is a step in the right direction. Despite the ample room for improvement, the approach that combines volume matching between radars (either SR-GR or GR-GR) and quality-weighted comparison is readily available for application or further scrutiny. As a step towards reproducibility and transparency in atmospheric science, the 3D matching procedure and the analysis workflows as well as sample data are made available in public repositories. Open-source software such as Python and wradlib are used for all radar data processing in this thesis. This approach towards open science provides both research institutions and weather services with a valuable tool that can be applied to radar calibration, from monitoring to a posteriori correction of archived data.}, language = {en} } @article{KrahThulin2019, author = {Krah, Markus and Thulin, Mirjam}, title = {Benjamin, Rosenzweig, and the Babel Fish}, series = {PaRDeS: Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien e. V. = Journal of the German Association for Jewish Studies}, volume = {2019}, journal = {PaRDeS: Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien e. V. = Journal of the German Association for Jewish Studies}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-44589}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-445899}, pages = {11 -- 20}, year = {2019}, language = {en} } @misc{GrafeBatsiosMeyeretal.2019, author = {Grafe, Marianne and Batsios, Petros and Meyer, Irene and Lisin, Daria and Baumann, Otto and Goldberg, Martin W. and Gr{\"a}f, Ralph}, title = {Supramolecular Structures of the Dictyostelium Lamin NE81}, series = {Potsprint der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, journal = {Potsprint der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe}, number = {682}, issn = {1866-8372}, doi = {10.25932/publishup-42597}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-425976}, pages = {17}, year = {2019}, abstract = {Nuclear lamins are nucleus-specific intermediate filaments (IF) found at the inner nuclear membrane (INM) of the nuclear envelope (NE). Together with nuclear envelope transmembrane proteins, they form the nuclear lamina and are crucial for gene regulation and mechanical robustness of the nucleus and the whole cell. Recently, we characterized Dictyostelium NE81 as an evolutionarily conserved lamin-like protein, both on the sequence and functional level. Here, we show on the structural level that the Dictyostelium NE81 is also capable of assembling into filaments, just as metazoan lamin filament assemblies. Using field-emission scanning electron microscopy, we show that NE81 expressed in Xenopous oocytes forms filamentous structures with an overall appearance highly reminiscent of Xenopus lamin B2. The in vitro assembly properties of recombinant His-tagged NE81 purified from Dictyostelium extracts are very similar to those of metazoan lamins. Super-resolution stimulated emission depletion (STED) and expansion microscopy (ExM), as well as transmission electron microscopy of negatively stained purified NE81, demonstrated its capability of forming filamentous structures under low-ionic-strength conditions. These results recommend Dictyostelium as a non-mammalian model organism with a well-characterized nuclear envelope involving all relevant protein components known in animal cells.}, language = {en} } @article{Coors2019, author = {Coors, Maria}, title = {Tewje in Deutschland}, series = {PaRDeS: Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, journal = {PaRDeS: Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-47121}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471211}, pages = {57 -- 72}, year = {2019}, abstract = {Drawing on the example of Sholem Aleichem's Tevye the Dairyman, this article covers the history of Yiddish translation and publication in Germany in the 20th century.Following the paradigm of translation as a cultural practice, I demonstrate how the translation reflects aspects of Jewish-German cultural history, focussing on a mainly inner-Jewish identity discourse before the Shoah and a remembrance context after it. Whereas decisive differences and changes characterize 20th-century history in diachronic as well as synchronic respect, the article reflects also on continuities and parallels.}, language = {de} } @misc{SchmoelzHaeberlein2019, author = {Schm{\"o}lz-H{\"a}berlein, Michaela}, title = {Stefanie Fischer, {\"O}konomisches Vertrauen und antisemitische Gewalt. J{\"u}dische Viehh{\"a}ndler in Mittelfranken 1919-1939,G{\"o}ttingen: Wallstein,2014, 368 S., / Cornelia Aust, The Jewish Economic Elite. Making Modern Europe, Bloomington: Indiana University Press, 2018, 272 S. / [rezensiert von] Michaela Schm{\"o}lz-H{\"a}berlein}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-47169}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471691}, pages = {170 -- 176}, year = {2019}, language = {de} } @misc{Stemberger2019, author = {Stemberger, G{\"u}nter}, title = {Martin Goodman, A History of Judaism,London: Allen Lane, 2017, 656 S. /[rezensiert von] G{\"u}nter Stemberger}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-47168}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471682}, pages = {167 -- 170}, year = {2019}, language = {de} } @misc{Ferrari2019, author = {Ferrari, Francesco}, title = {Vladimir Jank{\´e}l{\´e}vitch, Philosophie morale, Fran{\c{c}}oise Schwab (ed.), Paris: Flammarion, 2019, 1184 S. / [rezensiert von] Francesco Ferrari}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-649}, doi = {10.25932/publishup-47167}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471673}, pages = {164 -- 167}, year = {2019}, language = {en} } @misc{SowemimoKnoxBrownBorcherdsetal.2019, author = {Sowemimo, Oluwakemi T. and Knox-Brown, Patrick and Borcherds, Wade and Rindfleisch, Tobias and Thalhammer, Anja and Daughdrill, Gary W.}, title = {Conserved glycines control disorder and function in the cold-regulated protein, COR15A}, series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, number = {1089}, issn = {1866-8372}, doi = {10.25932/publishup-47221}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-472217}, pages = {19}, year = {2019}, abstract = {Cold-regulated (COR) 15A is an intrinsically disordered protein (IDP) from Arabidopsis thaliana important for freezing tolerance. During freezing-induced cellular dehydration, COR15A transitions from a disordered to mostly alpha-helical structure. We tested whether mutations that increase the helicity of COR15A also increase its protective function. Conserved glycine residues were identified and mutated to alanine. Nuclear magnetic resonance (NMR) spectroscopy was used to identify residue-specific changes in helicity for wildtype (WT) COR15A and the mutants. Circular dichroism (CD) spectroscopy was used to monitor the coil-helix transition in response to increasing concentrations of trifluoroethanol (TFE) and ethylene glycol. The impact of the COR15A mutants on the stability of model membranes during a freeze-thaw cycle was investigated by fluorescence spectroscopy. The results of these experiments showed the mutants had a higher content of alpha-helical structure and the increased alpha-helicity improved membrane stabilization during freezing. Comparison of the TFE- and ethylene glycol-induced coil-helix transitions support our conclusion that increasing the transient helicity of COR15A in aqueous solution increases its ability to stabilize membranes during freezing. Altogether, our results suggest the conserved glycine residues are important for maintaining the disordered structure of COR15A but are also compatible with the formation of alpha-helical structure during freezing induced dehydration.}, language = {en} } @misc{SchieferdeckerWendler2019, author = {Schieferdecker, Anne and Wendler, Petra}, title = {Structural mapping of missense mutations in the Pex1/Pex6 complex}, series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, number = {1072}, issn = {1866-8372}, doi = {10.25932/publishup-47284}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-472843}, pages = {27}, year = {2019}, abstract = {Peroxisome biogenesis disorders (PBDs) are nontreatable hereditary diseases with a broad range of severity. Approximately 65\% of patients are affected by mutations in the peroxins Pex1 and Pex6. The proteins form the heteromeric Pex1/Pex6 complex, which is important for protein import into peroxisomes. To date, no structural data are available for this AAA+ ATPase complex. However, a wealth of information can be transferred from low-resolution structures of the yeast scPex1/scPex6 complex and homologous, well-characterized AAA+ ATPases. We review the abundant records of missense mutations described in PBD patients with the aim to classify and rationalize them by mapping them onto a homology model of the human Pex1/Pex6 complex. Several mutations concern functionally conserved residues that are implied in ATP hydrolysis and substrate processing. Contrary to fold destabilizing mutations, patients suffering from function-impairing mutations may not benefit from stabilizing agents, which have been reported as potential therapeutics for PBD patients.}, language = {en} } @misc{SchwarzLossowKoppetal.2019, author = {Schwarz, Maria and Lossow, Kristina and Kopp, Johannes F. and Schwerdtle, Tanja and Kipp, Anna Patricia}, title = {Crosstalk of Nrf2 with the Trace Elements Selenium, Iron, Zinc, and Copper}, series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, number = {1081}, issn = {1866-8372}, doi = {10.25932/publishup-47287}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-472873}, pages = {20}, year = {2019}, abstract = {Trace elements, like Cu, Zn, Fe, or Se, are important for the proper functioning of antioxidant enzymes. However, in excessive amounts, they can also act as pro-oxidants. Accordingly, trace elements influence redox-modulated signaling pathways, such as the Nrf2 pathway. Vice versa, Nrf2 target genes belong to the group of transport and metal binding proteins. In order to investigate whether Nrf2 directly regulates the systemic trace element status, we used mice to study the effect of a constitutive, whole-body Nrf2 knockout on the systemic status of Cu, Zn, Fe, and Se. As the loss of selenoproteins under Se-deprived conditions has been described to further enhance Nrf2 activity, we additionally analyzed the combination of Nrf2 knockout with feeding diets that provide either suboptimal, adequate, or supplemented amounts of Se. Experiments revealed that the Nrf2 knockout partially affected the trace element concentrations of Cu, Zn, Fe, or Se in the intestine, liver, and/or plasma. However, aside from Fe, the other three trace elements were only marginally modulated in an Nrf2-dependent manner. Selenium deficiency mainly resulted in increased plasma Zn levels. One putative mediator could be the metal regulatory transcription factor 1, which was up-regulated with an increasing Se supply and downregulated in Se-supplemented Nrf2 knockout mice.}, language = {en} } @misc{AyzelIzhitskiy2019, author = {Ayzel, Georgy and Izhitskiy, Alexander}, title = {Climate change impact assessment on freshwater inflow into the Small Aral Sea}, series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, number = {1071}, issn = {1866-8372}, doi = {10.25932/publishup-47279}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-472794}, pages = {21}, year = {2019}, abstract = {During the last few decades, the rapid separation of the Small Aral Sea from the isolated basin has changed its hydrological and ecological conditions tremendously. In the present study, we developed and validated the hybrid model for the Syr Darya River basin based on a combination of state-of-the-art hydrological and machine learning models. Climate change impact on freshwater inflow into the Small Aral Sea for the projection period 2007-2099 has been quantified based on the developed hybrid model and bias corrected and downscaled meteorological projections simulated by four General Circulation Models (GCM) for each of three Representative Concentration Pathway scenarios (RCP). The developed hybrid model reliably simulates freshwater inflow for the historical period with a Nash-Sutcliffe efficiency of 0.72 and a Kling-Gupta efficiency of 0.77. Results of the climate change impact assessment showed that the freshwater inflow projections produced by different GCMs are misleading by providing contradictory results for the projection period. However, we identified that the relative runoff changes are expected to be more pronounced in the case of more aggressive RCP scenarios. The simulated projections of freshwater inflow provide a basis for further assessment of climate change impacts on hydrological and ecological conditions of the Small Aral Sea in the 21st Century.}, language = {en} } @misc{AlkerSchwerdtleSchomburgetal.2019, author = {Alker, Wiebke and Schwerdtle, Tanja and Schomburg, Lutz and Haase, Hajo}, title = {A Zinpyr-1-based fluorimetric microassay for free zinc in human serum}, series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, number = {1086}, issn = {1866-8372}, doi = {10.25932/publishup-47283}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-472833}, pages = {15}, year = {2019}, abstract = {Zinc is an essential trace element, making it crucial to have a reliable biomarker for evaluating an individual's zinc status. The total serum zinc concentration, which is presently the most commonly used biomarker, is not ideal for this purpose, but a superior alternative is still missing. The free zinc concentration, which describes the fraction of zinc that is only loosely bound and easily exchangeable, has been proposed for this purpose, as it reflects the highly bioavailable part of serum zinc. This report presents a fluorescence-based method for determining the free zinc concentration in human serum samples, using the fluorescent probe Zinpyr-1. The assay has been applied on 154 commercially obtained human serum samples. Measured free zinc concentrations ranged from 0.09 to 0.42 nM with a mean of 0.22 ± 0.05 nM. It did not correlate with age or the total serum concentrations of zinc, manganese, iron or selenium. A negative correlation between the concentration of free zinc and total copper has been seen for sera from females. In addition, the free zinc concentration in sera from females (0.21 ± 0.05 nM) was significantly lower than in males (0.23 ± 0.06 nM). The assay uses a sample volume of less than 10 µL, is rapid and cost-effective and allows us to address questions regarding factors influencing the free serum zinc concentration, its connection with the body's zinc status, and its suitability as a future biomarker for an individual's zinc status.}, language = {en} } @article{HolzmanZuckermann2019, author = {Holzman, Gitit and Zuckermann, Ghil'ad}, title = {Tanakh Ram: Translating the Hebrew Bible into Israeli}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-47139}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471395}, pages = {105 -- 122}, year = {2019}, abstract = {The Ram Bible (Tanakh Ram) is a recently-published Bible edition printed in two columns: the right-hand column features the original biblical Hebrew text and the lefthand column features the translation of the Bible into a high-register literary Israeli (Reclaimed Hebrew). The Ram Bible edition has gained impressive academic and popular attention. This paper looks at differences between academics, teachers, students, media personalities and senior officials in the education system, regarding their attitude to the Ram Bible. Our study reveals that Bible teachers and students who make frequent use of this edition understand its contribution to comprehending the biblical language, stories, and ideas. Opponents of Ram Bible are typically administrators and theoretician scholars who advocate the importance of teaching the Bible but do not actually teach it themselves. We argue that the fundamental difference between biblical Hebrew and Israeli makes the Hebrew Bible incomprehensible to native Israeli speakers. We explain the advantages of employing tools such as the Ram Bible.}, language = {en} } @article{Coors2019, author = {Coors, Maria}, title = {Tewje in Deutschland}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-47136}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471365}, pages = {57 -- 72}, year = {2019}, abstract = {Drawing on the example of Sholem Aleichem's Tevye the Dairyman, this article covers the history of Yiddish translation and publication in Germany in the 20th century.Following the paradigm of translation as a cultural practice, I demonstrate how the translation reflects aspects of Jewish-German cultural history, focussing on a mainly inner-Jewish identity discourse before the Shoah and a remembrance context after it. Whereas decisive differences and changes characterize 20th-century history in diachronic as well as synchronic respect, the article reflects also on continuities and parallels.}, language = {de} } @article{Schramm2019, author = {Schramm, Netta}, title = {Radical Translation as Transvaluation}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-47137}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471374}, pages = {73 -- 87}, year = {2019}, abstract = {Scholars of modern Jewish thought explore the hermeneutics of "translation" to describe the transference of concepts between discourses. I suggest a more radical approach - translation as transvaluation - is required. Eschewing modern tests of truth such as "the author would have accepted it" and "the author should have accepted it," this radical form of translation is intentionally unfaithful to original meanings. However, it is not a reductionist reading or a liberating text. Instead, it is a persistent squabble depending on both source and translation for sustenance. Exploring this paradigm entails a review of three expositions of the Korah biblical narrative; three readings dedicated to keeping an eye on current events: (1) Tsene-rene (Prague, 1622), biblical prose; (2) Yaldei Yisrael Kodesh, (Tel Aviv, 1973), a secular Zionist reworking of Tsene-rene; and (3) The Jews are Coming (Israel, 2014-2017) a satirical television show.}, language = {en} } @article{Driver2019, author = {Driver, Cory}, title = {Translating Jewish Cemeteries in Morocco}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-47138}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471385}, pages = {89 -- 102}, year = {2019}, abstract = {This paper addresses issues of translating both words and rituals as Muslim cemetery keepers care for Jewish graves and recite traditional prayers for the dead in Morocco. Several issues of translation must be dealt with while considering these rare and disappearing practices. The first issue to be discussed is the translation of Hebrew inscriptions into French by cemetery keepers. One cemetery keeper in Meknes has tried to compile an exhaustive index of the names and dates represented on the gravestones under her care. The Muslim guard of the Jewish cemetery in Sefrou, on the other hand, has somewhat famously told visitors differing stories about his ability and willingness to pray the Kaddish over the graves of emigrated relatives who cannot return to mark an anniversary death. These practices provide the context for considering how the act of Muslims caring for Jewish graves creates linguistic and ritual translations of traditional Jewish ancestor care.}, language = {en} } @misc{Fishbane2019, author = {Fishbane, Eitan P.}, title = {The Book of Radiance}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-47140}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471404}, pages = {123 -- 132}, year = {2019}, language = {en} } @article{Gruenbaum2019, author = {Gruenbaum, Caroline}, title = {King Arthur's Jewish Knights: The Many Faces of Medieval Hebrew Literature}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-47141}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471413}, pages = {137 -- 144}, year = {2019}, language = {en} } @article{KrahThulin2019, author = {Krah, Markus and Thulin, Mirjam}, title = {Which Works in Jewish Studies Should Urgently Be (Re-)Translated?}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-47142}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471426}, pages = {147 -- 155}, year = {2019}, language = {en} } @misc{Schirrmeister2019, author = {Schirrmeister, Sebastian}, title = {Birgit M. K{\"o}rner: Hebr{\"a}ische Avantgarde: Else Lasker-Sch{\"u}lers Poetologie im Kontext des Kulturzionismus, K{\"o}ln, Weimar, Wien: B{\"o}hlau, 2017, 356 S./[rezensiert von] Sebastian Schirrmeister}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-47144}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471441}, pages = {161 -- 164}, year = {2019}, language = {de} } @misc{Meyer2019, author = {Meyer, Thomas}, title = {Grażyna Jurewicz, Moses Mendelssohn {\"u}ber die Bestimmung des Menschen. Eine deutsch-j{\"u}dische Begriffsgeschichte, Hannover: Wehrhahn Verlag, 2018, 244 S./ [rezensiert von] Thomas Meyer}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-47172}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471728}, pages = {182 -- 185}, year = {2019}, language = {de} } @misc{Walter2019, author = {Walter, Simon}, title = {Katharina Hoba, Generation im {\"U}bergang. Beheimatungsprozesse deutscher Juden in Israel, K{\"o}ln: B{\"o}hlau, 2017, 508 S. / [rezensiert von] Simon Walter}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-47174}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471742}, pages = {188 -- 191}, year = {2019}, language = {de} } @misc{Artwińska2019, author = {Artwińska, Anna}, title = {Abraham Teitelbaum, Warschauer Innenh{\"o}fe. J{\"u}disches Leben um 1900 - Erinnerungen. Aus dem Jiddischen von Daniel Wartenberg, hg. Frank Berg, G{\"o}ttingen: Wallstein Verlag, 2017, 235 S. / [rezensiert von] Anna Artwińska}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-47173}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471737}, pages = {185 -- 188}, year = {2019}, language = {de} } @misc{Schulz2019, author = {Schulz, Michael Karl}, title = {Inka Le-Huu, Die sociale Emanzipation. J{\"u}disch-christliche Begegnungen im Hamburger B{\"u}rgertum 1830-1871, G{\"o}ttingen: Wallstein, 2017, 451 S. / [rezensiert von] Michael K. Schulz}, series = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, volume = {2019}, journal = {PaRDeS : Zeitschrift der Vereinigung f{\"u}r J{\"u}dische Studien = Transformative Translations in Jewish History and Culture}, number = {25}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-86956-468-5}, issn = {1614-6492}, doi = {10.25932/publishup-47171}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471711}, pages = {179 -- 182}, year = {2019}, language = {de} }