@article{SolgerKunzFinketal.2019,
  author    = {Solger, Franziska and Kunz, Tobias C. and Fink, Julian and Paprotka, Kerstin and Pfister, Pauline and Hagen, Franziska and Schumacher, Fabian and Kleuser, Burkhard and Seibel, J{\"u}rgen and Rudel, Thomas},
  title     = {A role of sphingosine in the intracellular survival of Neisseria gonorrhoeae},
  series = {Frontiers in Cellular and Infection Microbiology},
  volume    = {10},
  journal   = {Frontiers in Cellular and Infection Microbiology},
  publisher = {Frontiers Media},
  address   = {Lausanne},
  issn      = {2235-2988},
  doi       = {10.3389/fcimb.2020.00215},
  pages     = {12},
  year      = {2019},
  abstract  = {Obligate human pathogenic Neisseria gonorrhoeae are the second most frequent bacterial cause of sexually transmitted diseases. These bacteria invade different mucosal tissues and occasionally disseminate into the bloodstream. Invasion into epithelial cells requires the activation of host cell receptors by the formation of ceramide-rich platforms. Here, we investigated the role of sphingosine in the invasion and intracellular survival of gonococci. Sphingosine exhibited an anti-gonococcal activity in vitro. We used specific sphingosine analogs and click chemistry to visualize sphingosine in infected cells. Sphingosine localized to the membrane of intracellular gonococci. Inhibitor studies and the application of a sphingosine derivative indicated that increased sphingosine levels reduced the intracellular survival of gonococci. We demonstrate here, that sphingosine can target intracellular bacteria and may therefore exert a direct bactericidal effect inside cells.},
  language  = {en}
}
@article{HeisselPietrekRappetal.2019,
  author    = {Heissel, Andreas and Pietrek, Anou F. and Rapp, Michael A. and Heinzel, Stephan and Williams, Geoffrey},
  title     = {Perceived health care climate of older people attending an exercise program},
  series = {Journal of aging and physical activity : JAPA ; the official journal of the International Society for Aging and Physical Activity},
  volume    = {28},
  journal   = {Journal of aging and physical activity : JAPA ; the official journal of the International Society for Aging and Physical Activity},
  number    = {2},
  publisher = {Human Kinetics Publ.},
  address   = {Champaign},
  issn      = {1063-8652},
  doi       = {10.1123/japa.2018-0350},
  pages     = {276 -- 286},
  year      = {2019},
  abstract  = {The role of perceived need support from exercise professionals in improving mental health was examined in a sample of older adults, thereby validating the short Health Care Climate Questionnaire. A total of 491 older people (M = 72.68 years; SD = 5.47) attending a health exercise program participated in this study. Cronbach's alpha was found to be high (alpha = .90). Satisfaction with the exercise professional correlated moderately with the short Health Care Climate Questionnaire mean value (r = .38; p < .01). The mediator analyses yielded support for the self-determination theory process model in older adults by showing both basic need satisfaction and frustration as mediating variables between perceived autonomy support and depressive symptoms. The short Health Care Climate Questionnaire is an economical instrument for assessing basic need satisfaction provided by the exercise therapist from the participant's perspective. Furthermore, this cross-sectional study supported the link from coaching style to the satisfaction/frustration of basic psychological needs, which in turn, predicted mental health. Analyses of criterion validity suggest a revision of the construct by integrating need frustration.},
  language  = {en}
}
@article{HoehleBijeljacBabicNazzi2019,
  author    = {H{\"o}hle, Barbara and Bijeljac-Babic, Ranka and Nazzi, Thierry},
  title     = {Variability and stability in early language acquisition},
  series = {Bilingualism : language and cognition},
  volume    = {23},
  journal   = {Bilingualism : language and cognition},
  number    = {1},
  publisher = {Cambridge Univ. Press},
  address   = {New York},
  issn      = {1366-7289},
  doi       = {10.1017/S1366728919000348},
  pages     = {56 -- 71},
  year      = {2019},
  abstract  = {Many human infants grow up learning more than one language simultaneously but only recently has research started to study early language acquisition in this population more systematically. The paper gives an overview on findings on early language acquisition in bilingual infants during the first two years of life and compares these findings to current knowledge on early language acquisition in monolingual infants. Given the state of the research, the overview focuses on research on phonological and early lexical development in the first two years of life. We will show that the developmental trajectory of early language acquisition in these areas is very similar in mono- and bilingual infants suggesting that these early steps into language are guided by mechanisms that are rather robust against the differences in the conditions of language exposure that mono- and bilingual infants typically experience.},
  language  = {en}
}
@article{CervantesVillaShpritsAseevetal.2019,
  author    = {Cervantes Villa, Juan Sebastian and Shprits, Yuri Y. and Aseev, Nikita and Drozdov, Alexander and Castillo Tibocha, Angelica Maria and Stolle, Claudia},
  title     = {Identifying radiation belt electron source and loss processes by assimilating spacecraft data in a three-dimensional diffusion model},
  series = {Journal of geophysical research : Space physics},
  volume    = {125},
  journal   = {Journal of geophysical research : Space physics},
  number    = {1},
  publisher = {American Geophysical Union},
  address   = {Washington},
  issn      = {2169-9380},
  doi       = {10.1029/2019JA027514},
  pages     = {16},
  year      = {2019},
  abstract  = {Data assimilation aims to blend incomplete and inaccurate data with physics-based dynamical models. In the Earth's radiation belts, it is used to reconstruct electron phase space density, and it has become an increasingly important tool in validating our current understanding of radiation belt dynamics, identifying new physical processes, and predicting the near-Earth hazardous radiation environment. In this study, we perform reanalysis of the sparse measurements from four spacecraft using the three-dimensional Versatile Electron Radiation Belt diffusion model and a split-operator Kalman filter over a 6-month period from 1 October 2012 to 1 April 2013. In comparison to previous works, our 3-D model accounts for more physical processes, namely, mixed pitch angle-energy diffusion, scattering by Electromagnetic Ion Cyclotron waves, and magnetopause shadowing. We describe how data assimilation, by means of the innovation vector, can be used to account for missing physics in the model. We use this method to identify the radial distances from the Earth and the geomagnetic conditions where our model is inconsistent with the measured phase space density for different values of the invariants mu and K. As a result, the Kalman filter adjusts the predictions in order to match the observations, and we interpret this as evidence of where and when additional source or loss processes are active. The current work demonstrates that 3-D data assimilation provides a comprehensive picture of the radiation belt electrons and is a crucial step toward performing reanalysis using measurements from ongoing and future missions.},
  language  = {en}
}
@article{BlasiusRudolfWeithoffetal.2019,
  author    = {Blasius, Bernd and Rudolf, Lars and Weithoff, Guntram and Gaedke, Ursula and Fussmann, Gregor F.},
  title     = {Long-term cyclic persistence in an experimental predator-prey system},
  series = {Nature : the international weekly journal of science},
  volume    = {577},
  journal   = {Nature : the international weekly journal of science},
  number    = {7789},
  publisher = {Nature Publ. Group},
  address   = {London},
  issn      = {0028-0836},
  doi       = {10.1038/s41586-019-1857-0},
  pages     = {226 -- 230},
  year      = {2019},
  abstract  = {Predator-prey cycles rank among the most fundamental concepts in ecology, are predicted by the simplest ecological models and enable, theoretically, the indefinite persistence of predator and prey(1-4). However, it remains an open question for how long cyclic dynamics can be self-sustained in real communities. Field observations have been restricted to a few cycle periods(5-8) and experimental studies indicate that oscillations may be short-lived without external stabilizing factors(9-19). Here we performed microcosm experiments with a planktonic predator-prey system and repeatedly observed oscillatory time series of unprecedented length that persisted for up to around 50 cycles or approximately 300 predator generations. The dominant type of dynamics was characterized by regular, coherent oscillations with a nearly constant predator-prey phase difference. Despite constant experimental conditions, we also observed shorter episodes of irregular, non-coherent oscillations without any significant phase relationship. However, the predator-prey system showed a strong tendency to return to the dominant dynamical regime with a defined phase relationship. A mathematical model suggests that stochasticity is probably responsible for the reversible shift from coherent to non-coherent oscillations, a notion that was supported by experiments with external forcing by pulsed nutrient supply. Our findings empirically demonstrate the potential for infinite persistence of predator and prey populations in a cyclic dynamic regime that shows resilience in the presence of stochastic events.},
  language  = {en}
}
@article{HehnMendezUebernickeletal.2019,
  author    = {Hehn, Jennifer and Mendez, Daniel and Uebernickel, Falk and Brenner, Walter and Broy, Manfred},
  title     = {On integrating design thinking for human-centered requirements engineering},
  series = {IEEE software},
  volume    = {37},
  journal   = {IEEE software},
  number    = {2},
  publisher = {Inst. of Electr. and Electronics Engineers},
  address   = {Los Alamitos},
  issn      = {0740-7459},
  doi       = {10.1109/MS.2019.2957715},
  pages     = {25 -- 31},
  year      = {2019},
  abstract  = {We elaborate on the possibilities and needs to integrate design thinking into requirements engineering, drawing from our research and project experiences. We suggest three approaches for tailoring and integrating design thinking and requirements engineering with complementary synergies and point at open challenges for research and practice.},
  language  = {en}
}
@article{LiChenQiuetal.2019,
  author    = {Li, Changsheng and Chen, Gangjin and Qiu, Xunlin and Gao, Meng and Gerhard, Reimund},
  title     = {Modified polytetrafluoroethylene},
  series = {Applied physics express : APEX},
  volume    = {13},
  journal   = {Applied physics express : APEX},
  number    = {1},
  publisher = {IOP Publ. Ltd.},
  address   = {Bristol},
  issn      = {1882-0778},
  doi       = {10.7567/1882-0786/ab5b23},
  pages     = {5},
  year      = {2019},
  abstract  = {Three poly(tetrafluoroethylene-hexafluoropropylene-vinylidenefluoride) (TFE-HFP-VDF or THV) terpolymers (Dyneon (R)) with different monomer ratios are investigated to demonstrate the concept of "modified" PTFE for space-charge electrets. HFP and VDF monomers distort the highly ordered PTFE molecules, which effectively enhances processability and adversely affects space-charge storage. Particularly, VDF component renders the material polar and probably also more conductive, partially undermining the space-charge-storage capabilities of PTFE. Nevertheless, the terpolymer THV815 with a TFE/HFP/VDF wt\% ratio of 76.1/10.9/13 combines easy processability and relatively good space-charge stability. Our results shed light on novel concepts for space-charge electret materials with enhanced processing properties and reasonable charge-storage capabilities.},
  language  = {en}
}
@article{ChenLiuLiuetal.2019,
  author    = {Chen, Jun and Liu, Rui and Liu, Kai and Awasthi, Arun Kumar and Zhang, Peijin and Wang, Yuming and Kliem, Bernhard},
  title     = {Extreme-ultraviolet late phase of solar flares},
  series = {The astrophysical journal : an international review of spectroscopy and astronomical physics},
  volume    = {890},
  journal   = {The astrophysical journal : an international review of spectroscopy and astronomical physics},
  number    = {2},
  publisher = {Institute of Physics Publ.},
  address   = {London},
  issn      = {0004-637X},
  doi       = {10.3847/1538-4357/ab6def},
  pages     = {10},
  year      = {2019},
  abstract  = {A second peak in the extreme ultraviolet sometimes appears during the gradual phase of solar flares, which is known as the EUV late phase (ELP). Stereotypically ELP is associated with two separated sets of flaring loops with distinct sizes, and it has been debated whether ELP is caused by additional heating or extended plasma cooling in the longer loop system. Here we carry out a survey of 55 M-and-above GOES-class flares with ELP during 2010-2014. Based on the flare-ribbon morphology, these flares are categorized as circular-ribbon (19 events), two-ribbon (23 events), and complex-ribbon (13 events) flares. Among them, 22 events (40\%) are associated with coronal mass ejections, while the rest are confined. An extreme ELP, with the late-phase peak exceeding the main-phase peak, is found in 48\% of two-ribbon flares, 37\% of circular-ribbon flares, and 31\% of complex-ribbon flares, suggesting that additional heating is more likely present during ELP in two-ribbon than in circular-ribbon flares. Overall, cooling may be the dominant factor causing the delay of the ELP peak relative to the main-phase peak, because the loop system responsible for the ELP emission is generally larger than, and well separated from, that responsible for the main-phase emission. All but one of the circular-ribbon flares can be well explained by a composite "dome-plate" quasi-separatrix layer (QSL). Only half of these show a magnetic null point, with its fan and spine embedded in the dome and plate, respectively. The dome-plate QSL, therefore, is a general and robust structure characterizing circular-ribbon flares.},
  language  = {en}
}
@article{BaerGrossmannHeidenreichetal.2019,
  author    = {B{\"a}r, Markus and Großmann, Robert and Heidenreich, Sebastian and Peruani, Fernando},
  title     = {Self-propelled rods},
  series = {Annual review of condensed matter physics},
  volume    = {11},
  journal   = {Annual review of condensed matter physics},
  publisher = {Annual Reviews},
  address   = {Palo Alto},
  issn      = {1947-5454},
  doi       = {10.1146/annurev-conmatphys-031119-050611},
  pages     = {441 -- 466},
  year      = {2019},
  abstract  = {A wide range of experimental systems including gliding, swarming and swimming bacteria, in vitro motility assays, and shaken granular media are commonly described as self-propelled rods. Large ensembles of those entities display a large variety of self-organized, collective phenomena, including the formation of moving polar clusters, polar and nematic dynamic bands, mobility-induced phase separation, topological defects, and mesoscale turbulence, among others. Here, we give a brief survey of experimental observations and review the theoretical description of self-propelled rods. Our focus is on the emergent pattern formation of ensembles of dry self-propelled rods governed by short-ranged, contact mediated interactions and their wet counterparts that are also subject to long-ranged hydrodynamic flows. Altogether, self-propelled rods provide an overarching theme covering many aspects of active matter containing well-explored limiting cases. Their collective behavior not only bridges the well-studied regimes of polar selfpropelled particles and active nematics, and includes active phase separation, but also reveals a rich variety of new patterns.},
  language  = {en}
}
@article{CaliendoTuebbicke2019,
  author    = {Caliendo, Marco and T{\"u}bbicke, Stefan},
  title     = {New evidence on long-term effects of start-up subsidies},
  series = {Empirical economics},
  volume    = {59},
  journal   = {Empirical economics},
  number    = {4},
  publisher = {Physica-Verlag},
  address   = {Heidelberg},
  issn      = {0377-7332},
  doi       = {10.1007/s00181-019-01701-9},
  pages     = {1605 -- 1631},
  year      = {2019},
  abstract  = {The German start-up subsidy (SUS) program for the unemployed has recently undergone a major makeover, altering its institutional setup, adding an additional layer of selection and leading to ambiguous predictions of the program's effectiveness. Using propensity score matching (PSM) as our main empirical approach, we provide estimates of long-term effects of the post-reform subsidy on individual employment prospects and labor market earnings up to 40 months after entering the program. Our results suggest large and persistent long-term effects of the subsidy on employment probabilities and net earned income. These effects are larger than what was estimated for the pre-reform program. Extensive sensitivity analyses within the standard PSM framework reveal that the results are robust to different choices regarding the implementation of the weighting procedure and also with respect to deviations from the conditional independence assumption. As a further assessment of the results' sensitivity, we go beyond the standard selection-on-observables approach and employ an instrumental variable setup using regional variation in the likelihood of receiving treatment. Here, we exploit the fact that the reform increased the discretionary power of local employment agencies in allocating active labor market policy funds, allowing us to obtain a measure of local preferences for SUS as the program of choice. The results based on this approach give rise to similar estimates. Thus, our results indicating that SUS are still an effective active labor market program after the reform do not appear to be driven by "hidden bias."},
  language  = {en}
}
@article{MinkMcHardyBresseletal.2019,
  author    = {Mink, Albert and McHardy, Christopher and Bressel, Lena and Rauh, Cornelia and Krause, Mathias J.},
  title     = {Radiative transfer lattice Boltzmann methods},
  series = {Journal of quantitative spectroscopy \& radiative transfer},
  volume    = {243},
  journal   = {Journal of quantitative spectroscopy \& radiative transfer},
  publisher = {Pergamon Press},
  address   = {Oxford},
  issn      = {0022-4073},
  doi       = {10.1016/j.jqsrt.2019.106810},
  year      = {2019},
  abstract  = {The numerical prediction of radiative transport is a challenging task due to the complexity of the radiative transport equation. We apply the lattice Boltzmann method (LBM), originally developed for fluid flow problems, to solve the radiative transport in volume. One model (meso RTLBM) is derived directly from a discretization of the radiative transport equation, yielding in a precise but numerical costly scheme. The second model (macro RTLBM) solves the Helmholtz equation, which is a proper approximation for highly scattering volumes. Both numerical algorithms are validated against Monte-Carlo data for a set of 35 optical parameters, which correspond to radiative transport ranging from ballistic to diffuse regimes. Together with a set of four benchmark simulations, the comprehensive validation concludes the overall quality and detects asymptotic trends for radiative transport LBM. Furthermore, an accuracy map is presented, which summarizes the error for all parameters. This graph allows to determine the validity range for both radiative transport LBM at a glance. Finally, comprehensive guidelines are formulated to facilitate the choice of the radiative transport LBM model.},
  language  = {en}
}
@misc{KotthoffLisecSchwerdtleetal.2019,
  author    = {Kotthoff, Lisa and Lisec, Jan and Schwerdtle, Tanja and Koch, Matthias},
  title     = {Prediction of transformation products of monensin by electrochemistry compared to microsomal assay and hydrolysis},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {1340},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-47326},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-473262},
  pages     = {12},
  year      = {2019},
  abstract  = {The knowledge of transformation pathways and identification of transformation products (TPs) of veterinary drugs is important for animal health, food, and environmental matters. The active agent Monensin (MON) belongs to the ionophore antibiotics and is widely used as a veterinary drug against coccidiosis in broiler farming. However, no electrochemically (EC) generated TPs of MON have been described so far. In this study, the online coupling of EC and mass spectrometry (MS) was used for the generation of oxidative TPs. EC-conditions were optimized with respect to working electrode material, solvent, modifier, and potential polarity. Subsequent LC/HRMS (liquid+ chromatography/high resolution mass spectrometry) and MS/MS experiments were performed to identify the structures of derived TPs by a suspected target analysis. The obtained EC-results were compared to TPs observed in metabolism tests with microsomes and hydrolysis experiments of MON. Five previously undescribed TPs of MON were identified in our EC/MS based study and one TP, which was already known from literature and found by a microsomal assay, could be confirmed. Two and three further TPs were found as products in microsomal tests and following hydrolysis, respectively. We found decarboxylation, O-demethylation and acid-catalyzed ring-opening reactions to be the major mechanisms of MON transformation},
  language  = {en}
}
@misc{RancanVolkmannGiulbudagianetal.2019,
  author    = {Rancan, Fiorenza and Volkmann, Hildburg and Giulbudagian, Michael and Schumacher, Fabian and Stanko, Jessica Isolde and Kleuser, Burkhard and Blume-Peytavi, Ulrike and Calder{\´o}n, Marcelo and Vogt, Annika},
  title     = {Dermal Delivery of the High-Molecular-Weight Drug Tacrolimus by Means of Polyglycerol-Based Nanogels},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {1339},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-47327},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-473270},
  pages     = {14},
  year      = {2019},
  abstract  = {Polyglycerol-based thermoresponsive nanogels (tNGs) have been shown to have excellent skin hydration properties and to be valuable delivery systems for sustained release of drugs into skin. In this study, we compared the skin penetration of tacrolimus formulated in tNGs with a commercial 0.1\% tacrolimus ointment. The penetration of the drug was investigated in ex vivo abdominal and breast skin, while different methods for skin barrier disruption were investigated to improve skin permeability or simulate inflammatory conditions with compromised skin barrier. The amount of penetrated tacrolimus was measured in skin extracts by liquid chromatography tandem-mass spectrometry (LC-MS/MS), whereas the inflammatory markers IL-6 and IL-8 were detected by enzyme-linked immunosorbent assay (ELISA). Higher amounts of tacrolimus penetrated in breast as compared to abdominal skin or in barrier-disrupted as compared to intact skin, confirming that the stratum corneum is the main barrier for tacrolimus skin penetration. The anti-proliferative effect of the penetrated drug was measured in skin tissue/Jurkat cells co-cultures. Interestingly, tNGs exhibited similar anti-proliferative effects as the 0.1\% tacrolimus ointment. We conclude that polyglycerol-based nanogels represent an interesting alternative to paraffin-based formulations for the treatment of inflammatory skin conditions.},
  language  = {en}
}
@misc{AyzelVarentsovaErinaetal.2019,
  author    = {Ayzel, Georgy and Varentsova, Natalia and Erina, Oxana and Sokolov, Dmitriy and Kurochkina, Liubov and Moreydo, Vsevolod},
  title     = {OpenForecast},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {1338},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-47329},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-473295},
  pages     = {17},
  year      = {2019},
  abstract  = {The development and deployment of new operational runoff forecasting systems are a strong focus of the scientific community due to the crucial importance of reliable and timely runoff predictions for early warnings of floods and flashfloods for local businesses and communities. OpenForecast, the first operational runoff forecasting system in Russia, open for public use, is presented in this study. We developed OpenForecast based only on open-source software and data-GR4J hydrological model, ERA-Interim meteorological reanalysis, and ICON deterministic short-range meteorological forecasts. Daily forecasts were generated for two basins in the European part of Russia. Simulation results showed a limited efficiency in reproducing the spring flood of 2019. Although the simulations managed to capture the timing of flood peaks, they failed in estimating flood volume. However, further implementation of the parsimonious data assimilation technique significantly alleviates simulation errors. The revealed limitations of the proposed operational runoff forecasting system provided a foundation to outline its further development and improvement.},
  language  = {en}
}
@misc{BriegerHerzschuhPestryakovaetal.2019,
  author    = {Brieger, Frederic and Herzschuh, Ulrike and Pestryakova, Luidmila Agafyevna and Bookhagen, Bodo and Zakharov, Evgenii S. and Kruse, Stefan},
  title     = {Advances in the derivation of Northeast Siberian forest metrics using high-resolution UAV-based photogrammetric point clouds},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {1337},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-47331},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-473318},
  pages     = {24},
  year      = {2019},
  abstract  = {Forest structure is a crucial component in the assessment of whether a forest is likely to act as a carbon sink under changing climate. Detailed 3D structural information about the tundra-taiga ecotone of Siberia is mostly missing and still underrepresented in current research due to the remoteness and restricted accessibility. Field based, high-resolution remote sensing can provide important knowledge for the understanding of vegetation properties and dynamics. In this study, we test the applicability of consumer-grade Unmanned Aerial Vehicles (UAVs) for rapid calculation of stand metrics in treeline forests. We reconstructed high-resolution photogrammetric point clouds and derived canopy height models for 10 study sites from NE Chukotka and SW Yakutia. Subsequently, we detected individual tree tops using a variable-window size local maximum filter and applied a marker-controlled watershed segmentation for the delineation of tree crowns. With this, we successfully detected 67.1\% of the validation individuals. Simple linear regressions of observed and detected metrics show a better correlation (R2) and lower relative root mean square percentage error (RMSE\%) for tree heights (mean R2 = 0.77, mean RMSE\% = 18.46\%) than for crown diameters (mean R2 = 0.46, mean RMSE\% = 24.9\%). The comparison between detected and observed tree height distributions revealed that our tree detection method was unable to representatively identify trees <2 m. Our results show that plot sizes for vegetation surveys in the tundra-taiga ecotone should be adapted to the forest structure and have a radius of >15-20 m to capture homogeneous and representative forest stands. Additionally, we identify sources of omission and commission errors and give recommendations for their mitigation. In summary, the efficiency of the used method depends on the complexity of the forest's stand structure.},
  language  = {en}
}
@misc{PereraBoeckmann2019,
  author    = {Perera, Upeksha and B{\"o}ckmann, Christine},
  title     = {Solutions of direct and inverse even-order Sturm-Liouville problems using Magnus expansion},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {1336},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-47341},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-473414},
  pages     = {24},
  year      = {2019},
  abstract  = {In this paper Lie group method in combination with Magnus expansion is utilized to develop a universal method applicable to solving a Sturm-Liouville problem (SLP) of any order with arbitrary boundary conditions. It is shown that the method has ability to solve direct regular (and some singular) SLPs of even orders (tested for up to eight), with a mix of (including non-separable and finite singular endpoints) boundary conditions, accurately and efficiently. The present technique is successfully applied to overcome the difficulties in finding suitable sets of eigenvalues so that the inverse SLP problem can be effectively solved. The inverse SLP algorithm proposed by Barcilon (1974) is utilized in combination with the Magnus method so that a direct SLP of any (even) order and an inverse SLP of order two can be solved effectively.},
  language  = {en}
}
@article{PereraBoeckmann2019,
  author    = {Perera, Upeksha and B{\"o}ckmann, Christine},
  title     = {Solutions of Direct and Inverse Even-Order Sturm-Liouville Problems Using Magnus Expansion},
  series = {Mathematics},
  volume    = {7},
  journal   = {Mathematics},
  number    = {6},
  publisher = {MDPI},
  address   = {Basel, Schweiz},
  issn      = {2227-7390},
  doi       = {10.3390/math7060544},
  pages     = {24},
  year      = {2019},
  abstract  = {In this paper Lie group method in combination with Magnus expansion is utilized to develop a universal method applicable to solving a Sturm-Liouville problem (SLP) of any order with arbitrary boundary conditions. It is shown that the method has ability to solve direct regular (and some singular) SLPs of even orders (tested for up to eight), with a mix of (including non-separable and finite singular endpoints) boundary conditions, accurately and efficiently. The present technique is successfully applied to overcome the difficulties in finding suitable sets of eigenvalues so that the inverse SLP problem can be effectively solved. The inverse SLP algorithm proposed by Barcilon (1974) is utilized in combination with the Magnus method so that a direct SLP of any (even) order and an inverse SLP of order two can be solved effectively.},
  language  = {en}
}
@misc{PornsawadSapsakulBoeckmann2019,
  author    = {Pornsawad, Pornsarp and Sapsakul, Nantawan and B{\"o}ckmann, Christine},
  title     = {A modified asymptotical regularization of nonlinear ill-posed problems},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {1335},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-47343},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-473433},
  pages     = {19},
  year      = {2019},
  abstract  = {In this paper, we investigate the continuous version of modified iterative Runge-Kutta-type methods for nonlinear inverse ill-posed problems proposed in a previous work. The convergence analysis is proved under the tangential cone condition, a modified discrepancy principle, i.e., the stopping time T is a solution of ∥𝐹(𝑥𝛿(𝑇))-𝑦𝛿∥=𝜏𝛿+ for some 𝛿+>𝛿, and an appropriate source condition. We yield the optimal rate of convergence.},
  language  = {en}
}
@article{PornsawadSapsakulBoeckmann2019,
  author    = {Pornsawad, Pornsarp and Sapsakul, Nantawan and B{\"o}ckmann, Christine},
  title     = {A modified asymptotical regularization of nonlinear ill-posed problems},
  series = {Mathematics},
  volume    = {7},
  journal   = {Mathematics},
  edition   = {5},
  publisher = {MDPI},
  address   = {Basel, Schweiz},
  issn      = {2227-7390},
  doi       = {10.3390/math7050419},
  pages     = {19},
  year      = {2019},
  abstract  = {In this paper, we investigate the continuous version of modified iterative Runge-Kutta-type methods for nonlinear inverse ill-posed problems proposed in a previous work. The convergence analysis is proved under the tangential cone condition, a modified discrepancy principle, i.e., the stopping time T is a solution of ∥𝐹(𝑥𝛿(𝑇))-𝑦𝛿∥=𝜏𝛿+ for some 𝛿+>𝛿, and an appropriate source condition. We yield the optimal rate of convergence.},
  language  = {en}
}
@misc{GarbusowNebeSommeretal.2019,
  author    = {Garbusow, Maria and Nebe, Stephan and Sommer, Christian and Kuitunen-Paul, S{\"o}ren and Sebold, Miriam and Schad, Daniel and Friedel, Eva and Veer, Ilya M. and Wittchen, Hans-Ulrich and Rapp, Michael A. and Ripke, Stephan and Walter, Henrik and Huys, Quentin J. M. and Schlagenhauf, Florian and Smolka, Michael N. and Heinz, Andreas},
  title     = {Pavlovian-To-Instrumental Transfer and Alcohol Consumption in Young Male Social Drinkers},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe},
  number    = {841},
  issn      = {1866-8364},
  doi       = {10.25932/publishup-47328},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-473280},
  pages     = {14},
  year      = {2019},
  abstract  = {In animals and humans, behavior can be influenced by irrelevant stimuli, a phenomenon called Pavlovian-to-instrumental transfer (PIT). In subjects with substance use disorder, PIT is even enhanced with functional activation in the nucleus accumbens (NAcc) and amygdala. While we observed enhanced behavioral and neural PIT effects in alcohol-dependent subjects, we here aimed to determine whether behavioral PIT is enhanced in young men with high-risk compared to low-risk drinking and subsequently related functional activation in an a-priori region of interest encompassing the NAcc and amygdala and related to polygenic risk for alcohol consumption. A representative sample of 18-year old men (n = 1937) was contacted: 445 were screened, 209 assessed: resulting in 191 valid behavioral, 139 imaging and 157 genetic datasets. None of the subjects fulfilled criteria for alcohol dependence according to the Diagnostic and Statistical Manual of Mental Disorders-IV-TextRevision (DSM-IV-TR). We measured how instrumental responding for rewards was influenced by background Pavlovian conditioned stimuli predicting action-independent rewards and losses. Behavioral PIT was enhanced in high-compared to low-risk drinkers (b = 0.09, SE = 0.03, z = 2.7, p < 0.009). Across all subjects, we observed PIT-related neural blood oxygen level-dependent (BOLD) signal in the right amygdala (t = 3.25, p(SVC) = 0.04, x = 26, y = -6, z = -12), but not in NAcc. The strength of the behavioral PIT effect was positively correlated with polygenic risk for alcohol consumption (r(s) = 0.17, p = 0.032). We conclude that behavioral PIT and polygenic risk for alcohol consumption might be a biomarker for a subclinical phenotype of risky alcohol consumption, even if no drug-related stimulus is present. The association between behavioral PIT effects and the amygdala might point to habitual processes related to out PIT task. In non-dependent young social drinkers, the amygdala rather than the NAcc is activated during PIT; possible different involvement in association with disease trajectory should be investigated in future studies.},
  language  = {en}
}
@article{KellerPinchoverPogorzelski2019,
  author    = {Keller, Matthias and Pinchover, Yehuda and Pogorzelski, Felix},
  title     = {Criticality theory for Schr{\"o}dinger operators on graphs},
  series = {Journal of spectral theory},
  volume    = {10},
  journal   = {Journal of spectral theory},
  number    = {1},
  publisher = {European Mathematical Society},
  address   = {Z{\"u}rich},
  issn      = {1664-039X},
  doi       = {10.4171/JST/286},
  pages     = {73 -- 114},
  year      = {2019},
  abstract  = {We study Schrodinger operators given by positive quadratic forms on infinite graphs. From there, we develop a criticality theory for Schrodinger operators on general weighted graphs.},
  language  = {en}
}
@article{SobczykSobelGeorgieva2019,
  author    = {Sobczyk, Artur and Sobel, Edward and Georgieva, Viktoria},
  title     = {Meso-Cenozoic cooling and exhumation history of the Orlica-snie(z) over dotnik Dome (Sudetes, NE Bohemian Massif, Central Europe)},
  series = {Terra nova},
  volume    = {32},
  journal   = {Terra nova},
  number    = {2},
  publisher = {Wiley},
  address   = {Hoboken},
  issn      = {0954-4879},
  doi       = {10.1111/ter.12449},
  pages     = {122 -- 133},
  year      = {2019},
  abstract  = {This study presents the first suite of apatite fission-track (AFT) ages from the SE part of the Western Sudetes. AFT cooling ages from the Orlica-snie(z) over dotnik Dome and the Upper Nysa Klodzka Graben range from Late Cretaceous (84 Ma) to Early Palaeocene-Middle Eocene (64-45 Ma). The first stage of basin evolution (similar to 100-90 Ma) was marked by the formation of a local extensional depocentre and disruption of the Mesozoic planation surface. Subsequent far-field convergence of European microplates resulted in Coniacian-Santonian (similar to 89-83 Ma) thrust faulting. AFT data from both metamorphic basement and Mesozoic sedimentary cover indicate homogenous Late Cretaceous burial of the entire Western Sudetes. Thermal history modeling suggests that the onset of cooling could be constrained between 89 and 63 Ma with a climax during the Palaeocene-Middle Eocene basin inversion phase.},
  language  = {en}
}
@article{LorenzMatthiasPieperetal.2019,
  author    = {Lorenz, Robert C. and Matthias, Katja and Pieper, Dawid and Wegewitz, Uta and Morche, Johannes and Nocon, Marc and Rissling, Olesja and Schirm, Jacqueline and Freitag, Simone and Jacobs, Anja},
  title     = {AMSTAR 2 overall confidence rating},
  series = {Journal of clinical epidemiology : including pharmacoepidemiology reports},
  volume    = {119},
  journal   = {Journal of clinical epidemiology : including pharmacoepidemiology reports},
  publisher = {Elsevier},
  address   = {New York},
  issn      = {0895-4356},
  doi       = {10.1016/j.jclinepi.2019.10.006},
  pages     = {142 -- 144},
  year      = {2019},
  language  = {en}
}
@misc{GuskeJacobHirschnitzGarbersetal.2019,
  author    = {Guske, Anna-Lena and Jacob, Klaus and Hirschnitz-Garbers, Martin and Peuckert, Jan and Schridde, Stefan and Stinner, Sven and Wolf, Franziska and Zahrnt, Dominik and Ziesemer, Florence},
  title     = {Stories that change our world?},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe},
  number    = {612},
  issn      = {1867-5808},
  doi       = {10.25932/publishup-47278},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-472783},
  pages     = {14},
  year      = {2019},
  abstract  = {Narratives are shaping our understanding of the world. They convey values and norms and point to desirable future developments. In this way, they justify and legitimize political actions and social practices. Once a narrative has emerged and this world view is supported by broad societal groups, narratives can provide powerful momentum to trigger innovation and changes in the course of action. Narratives, however, are not necessarily based on evidence and precise categories, but can instead be vague and ambiguous in order to be acceptable and attractive to different actors. However, the more open and inclusive a narrative is, the less impact can be expected. We investigate whether there is a shared narrative in research for the sustainable economy and how this can be evaluated in terms of its potential societal impact. The paper carves out the visions for the future that have been underlying the research projects conducted within the German Federal Ministry of Education and Research (BMBF) funding programme "The Sustainable Economy". It then analyzes whether these visions are compatible with narratives dominating societal discourse on the sustainable economy, and concludes how the use of visions and narratives in research can contribute to fostering societal transformations.},
  language  = {en}
}
@article{WangOswaldGraeffetal.2019,
  author    = {Wang, Wei-shi and Oswald, Sascha and Gr{\"a}ff, Thomas and Lensing, Hermann Josef and Liu, Tie and Strasser, Daniel and Munz, Matthias},
  title     = {Impact of river reconstruction on groundwater flow during bank filtration assessed by transient three-dimensional modelling of flow and heat transport},
  series = {Hydrogeology journal : official journal of the International Association of Hydrogeologists},
  volume    = {28},
  journal   = {Hydrogeology journal : official journal of the International Association of Hydrogeologists},
  number    = {2},
  publisher = {Springer},
  address   = {Berlin ; Heidelberg [u.a.]},
  issn      = {1431-2174},
  doi       = {10.1007/s10040-019-02063-3},
  pages     = {723 -- 743},
  year      = {2019},
  abstract  = {Bank filtration (BF) is an established indirect water-treatment technology. The quality of water gained via BF depends on the subsurface capture zone, the mixing ratio (river water versus ambient groundwater), spatial and temporal distribution of subsurface travel times, and subsurface temperature patterns. Surface-water infiltration into the adjacent aquifer is determined by the local hydraulic gradient and riverbed permeability, which could be altered by natural clogging, scouring and artificial decolmation processes. The seasonal behaviour of a BF system in Germany, and its development during and about 6 months after decolmation (canal reconstruction), was observed with a long-term monitoring programme. To quantify the spatial and temporal variation in the BF system, a transient flow and heat transport model was implemented and two model scenarios, 'with' and 'without' canal reconstruction, were generated. Overall, the simulated water heads and temperatures matched those observed. Increased hydraulic connection between the canal and aquifer caused by the canal reconstruction led to an increase of similar to 23\% in the already high share of BF water abstracted by the nearby waterworks. Subsurface travel-time distribution substantially shifted towards shorter travel times. Flow paths with travel times <200 days increased by similar to 10\% and those with <300 days by 15\%. Generally, the periodic temperature signal, and the summer and winter temperature extrema, increased and penetrated deeper into the aquifer. The joint hydrological and thermal effects caused by the canal reconstruction might increase the potential of biodegradable compounds to further penetrate into the aquifer, also by potentially affecting the redox zonation in the aquifer.},
  language  = {en}
}
@incollection{vanBernum2019,
  author    = {van Bernum, Anja},
  title     = {When does life end?},
  series = {Perspectives of law and culture on the end-of-life legislations in France, Germany, India, Italy and United Kingdom},
  booktitle = {Perspectives of law and culture on the end-of-life legislations in France, Germany, India, Italy and United Kingdom},
  editor    = {Rohlfing-Dijoux, Stephanie and Hellmann, Uwe},
  publisher = {Nomos},
  address   = {Baden-Baden},
  isbn      = {978-3-8487-5492-2},
  doi       = {10.5771/9783845296777-251},
  pages     = {251 -- 260},
  year      = {2019},
  abstract  = {If you look at the question of the end-of-life legislation, one - or rather THE basic question - is particularly interesting: What is the "end of life"? What is death? Ofcourse, one can approach this question theologically or philosophically, but alsolegally and especially medically. Since the 1960 s, medical progress has made itpossible to distinguish between different individual points of time within the na-tural dying process. However, this raises the question as to which of these pointsof time is relevant for criminal law. This question, which is usually onsideredvery emotionally, will be examined in more detail in the paper.},
  language  = {en}
}
@article{OPUS4-59450,
  title     = {Migration, gender and religion},
  series = {Populism and the crisis of democracy},
  volume    = {3},
  journal   = {Populism and the crisis of democracy},
  editor    = {Fitzi, Gregor and Mackert, J{\"u}rgen and Turner, Bryan S.},
  publisher = {Routledge},
  address   = {London},
  isbn      = {978-11-3809-135-1},
  pages     = {xiv, 190},
  year      = {2019},
  language  = {en}
}
@incollection{Ette2019,
  author    = {Ette, Ottmar},
  title     = {Pride and conviviality - pride in conviviality},
  series = {Taking Stock - Twenty-Five Years of Comparative Literary Research (Internationale Forschungen zur allgemeinen und vergleichenden Literaturwissenschaft)},
  volume    = {200},
  booktitle = {Taking Stock - Twenty-Five Years of Comparative Literary Research (Internationale Forschungen zur allgemeinen und vergleichenden Literaturwissenschaft)},
  publisher = {Brill Rodopi},
  address   = {Leiden [u.a.]},
  isbn      = {978-90-04-41035-0},
  issn      = {0929-6999},
  doi       = {10.1163/9789004410350_006},
  pages     = {121 -- 155},
  year      = {2019},
  abstract  = {Pride is linked to conviviality, to the practice of life-with-an-other, and to an awareness of the limitations of the life forms and life norms which guide and regulate the life of culturally, socially, and historically defined communities. Assuming this link, pride in living-together and conviviality appear as concepts creating a framework for future perspectives. But these concepts need a space in which they can unfold critically and confidently with a view to the future. For millennia, the literatures of the world have created this space of simulation and experimentation in which knowledge of how-to-live-with-an-other has been put down on paper through the open-ended tradition of writing. It is the space of the life forms and life norms of conviviality: it offers us prospective knowledge for the future by translating the imaginable into the thinkable, and the readable into the livable.},
  language  = {en}
}
@article{KuehneMeisterMaassetal.2019,
  author    = {K{\"u}hne, Franziska and Meister, Ramona and Maass, Ulrike and Paunov, Tatjana and Weck, Florian},
  title     = {How reliable are therapeutic competence ratings?},
  series = {Cognitive therapy and research},
  volume    = {44},
  journal   = {Cognitive therapy and research},
  number    = {2},
  publisher = {Springer},
  address   = {New York},
  issn      = {0147-5916},
  doi       = {10.1007/s10608-019-10056-5},
  pages     = {241 -- 257},
  year      = {2019},
  abstract  = {Assessments of psychotherapeutic competencies play a crucial role in research and training. However, research on the reliability and validity of such assessments is sparse. This study aimed to provide an overview of the current evidence and to provide an average interrater reliability (IRR) of psychotherapeutic competence ratings. A systematic review was conducted, and 20 studies reported in 32 publications were collected. These 20 studies were included in a narrative synthesis, and 20 coefficients were entered into the meta-analysis. Most primary studies referred to cognitive-behavioral therapies and the treatment of depression, used the Cognitive Therapy Scale, based ratings on videos, and trained the raters. Our meta-analysis revealed a pooled ICC of 0.82, but at the same time severe heterogeneity. The evidence map highlighted a variety of variables related to competence assessments. Further aspects influencing the reliability of competence ratings and regarding the considerable heterogeneity are discussed in detail throughout the manuscript.},
  language  = {en}
}
@incollection{Jacobi2019,
  author    = {Jacobi, Juliane},
  title     = {Education},
  series = {The routledge history of women in early modern Europe},
  booktitle = {The routledge history of women in early modern Europe},
  publisher = {Routledge},
  address   = {Abingdon},
  isbn      = {978-0-429-35578-3},
  doi       = {10.4324/9780429355783},
  pages     = {115 -- 134},
  year      = {2019},
  abstract  = {Vives emphasizes needlework as an appropriate occupation for all women, even for 'a princess or a queen'. A wide variety of schools run by individual tradesmen or women offered instruction in certain fields, such as writing and calculus, while schools erected or licensed by the authorities concentrated on religious education. A large group of orphanages founded during the sixteenth and early seventeenth centuries provided a sound education for boys and girls. Authorities, parents and educational thinkers of the time were much less concerned with girls' education than with that of boys. Private tutoring at home concentrated on the same subjects but, when boys were instructed at home, some girls had a chance to participate in a more academically oriented education. In most educational settings, be it at day schools, boarding schools or in private homes, teachers, mothers and governesses were expected to raise good housewives, pious mothers and obedient spouses.},
  language  = {en}
}
@article{OPUS4-59133,
  title     = {Concepts and theory},
  series = {Populism and the crisis of democracy},
  volume    = {1},
  journal   = {Populism and the crisis of democracy},
  editor    = {Fitzi, Gregor and Mackert, J{\"u}rgen and Turner, Bryan S.},
  publisher = {Routledge},
  address   = {London},
  isbn      = {978-1-138-09136-8},
  doi       = {10.4324/9781315108070},
  pages     = {xiv, 177},
  year      = {2019},
  abstract  = {There is no threat to Western democracies today comparable to the rise of right-wing populism. While it has played an increasing role at least since the 1990s, only the social consequences of the global financial crises in 2008 have given it its break that led to UK's 'Brexit' and the election of Donald Trump as US President in 2016, as well as promoting what has been called left populism in countries that were hit the hardest by both the banking crisis and consequential neo-liberal austerity politics in the EU, such as Greece and Portugal. In 2017, the French Front National (FN) attracted many voters in the French Presidential elections; we have seen the radicalization of the Alternative f{\"u}r Deutschland (AfD) in Germany and the formation of centre-right government in Austria. Further, we have witnessed the consolidation of autocratic regimes, as in the EU member states Poland and Greece. All these manifestations of right-wing populism share a common feature: they attack or even compromise the core elements of democratic societies such as the separation of powers, protection of minorities, or the rule of law. Despite a broad debate on the re-emergence of 'populism' in the transition from the twentieth to the twenty-first century that has brought forth many interesting findings, a lack of sociological reasoning cannot be denied, as sociology itself withdrew from theorising populism decades ago and largely left the field to political sciences and history. In a sense, Populism and the Crisis of Democracy considers itself a contribution to begin filling this lacuna. Written in a direct and clear style, this set of volumes will be an invaluable reference for students and scholars in the field of political theory, political sociology and European Studies. This volume Concepts and Theory offers new and fresh perspectives on the debate on populism. Starting from complaints about the problems of conceptualising populism that in recent years have begun to revolve around themselves, the chapters offer a fundamental critique of the term and concept of populism, theoretically inspired typologies and descriptions of currently dominant concepts, and ways to elaborate on them. With regard to theory, the volume offers approaches that exceed the disciplinary horizon of political science that so far has dominated the debate. As sociological theory so far has been more or less absent in the debate on populism, only few efforts have been made to discuss populism more intensely within different theoretical contexts in order to explain its dynamics and processes. Thus, this volume offers critical views on the debate on populism from the perspectives of political economy and the analysis of critical historical events, the links of analyses of populism with social movement mobilisation, the significance of 'superfluous populations' in the rise of populism and an analysis of the exclusionary character of populism from the perspective of the theory of social closure.},
  language  = {en}
}
@misc{KrawietzGoebelAlbrechtetal.2019,
  author    = {Krawietz, Marian and Goebel, Jan and Albrecht, Sophia and Class, Fabian and Kohler, Ulrich},
  title     = {Leben in der ehemaligen DDR},
  publisher = {German Institute for Economic Research (DIW Berlin)},
  address   = {Berlin},
  doi       = {10.5684/soep.ddr18},
  year      = {2019},
  language  = {en}
}
@article{HippKohlerLeumann2019,
  author    = {Hipp, Lena and Kohler, Ulrich and Leumann, Sandra},
  title     = {How to implement respondent-driven sampling in practice},
  series = {Survey methods : insights from the field},
  journal   = {Survey methods : insights from the field},
  publisher = {Swiss Found. for Research in Social Sciences},
  address   = {Lausanne},
  issn      = {2296-4754},
  doi       = {10.13094/SMIF-2019-00009},
  pages     = {1 -- 13},
  year      = {2019},
  abstract  = {This article draws on the experience from an ongoing research project employing respondent-driven sampling (RDS) to survey (illicit) 24-hour home care workers. We highlight issues around the preparatory work and the fielding of the survey to provide researchers with useful insights on how to implement RDS when surveying populations for which the method has not yet been used. We conclude the article with ethical considerations that occur when employing RDS.},
  language  = {en}
}
@article{Kohler2019,
  author    = {Kohler, Ulrich},
  title     = {Possible uses of nonprobability sampling for the social sciences},
  series = {Survey methods : insights from the field},
  journal   = {Survey methods : insights from the field},
  publisher = {Swiss Found. for Research in Social Sciences},
  address   = {Lausanne},
  issn      = {2296-4754},
  doi       = {10.13094/SMIF-2019-00014},
  pages     = {13},
  year      = {2019},
  abstract  = {This paper compares the usability of data stemming from probability sampling with data stemming from nonprobability sampling. It develops six research scenarios that differ in their research goals and assumptions about the data generating process. It is shown that inferences from data stemming from nonprobability sampling implies demanding assumptions on the homogeneity of the units being studied. Researchers who are not willing to pose these assumptions are generally better off using data from probability sampling, regardless of the amount of nonresponse. However, even in cases when data from probability sampling is clearly advertised, data stemming from nonprobability sampling may contribute to the cumulative scientific endeavour of pinpointing a plausible interval for the parameter of interest.},
  language  = {en}
}
@article{SanderVinkHamann2019,
  author    = {Sander, Andreas Alexander Christoph and Vink, Jorick S. and Hamann, Wolf-Rainer},
  title     = {Driving classical Wolf-Rayet winds},
  series = {Monthly notices of the Royal Astronomical Society},
  volume    = {491},
  journal   = {Monthly notices of the Royal Astronomical Society},
  number    = {3},
  publisher = {Oxford Univ. Press},
  address   = {Oxford},
  issn      = {0035-8711},
  doi       = {10.1093/mnras/stz3064},
  pages     = {4406 -- 4425},
  year      = {2019},
  abstract  = {Classical Wolf-Rayet (cWR) stars are at a crucial evolutionary stage for constraining the fates of massive stars. The feedback of these hot, hydrogen-depleted stars dominates their surrounding by tremendous injections of ionizing radiation and kinetic energy. The strength of a Wolf-Rayet (WR) wind decides the eventual mass of its remnant, likely a massive black hole. However, despite their major influence and importance for gravitational wave detection statistics, WR winds are particularly poorly understood. In this paper, we introduce the first set of hydrodynamically consistent stellar atmosphere models for cWR stars of both the carbon (C) and the nitrogen (N) sequence, i.e. WC and WN stars, as a function of stellar luminosity-to-mass ratio (or Eddington Gamma) and metallicity. We demonstrate the inapplicability of the CAK wind theory for cWR stars and confirm earlier findings that their winds are launched at the (hot) iron (Fe) opacity peak. For log Z/Z(circle dot) > -2, Fe is also the main accelerator throughout the wind. Contrasting previous claims of a sharp lower mass-loss limit forWR stars, we obtain a smooth transition to optically thin winds. Furthermore, we find a strong dependence of the mass-loss rates on Eddington Gamma, both at solar and subsolar metallicity. Increases inWCcarbon and oxygen abundances turn out to slightly reduce the predicted mass-loss rates. Calculations at subsolar metallicities indicate that below the metallicity of the Small Magellanic Cloud, WR mass-loss rates decrease much faster than previously assumed, potentially allowing for high black hole masses even in the local Universe.},
  language  = {en}
}
@incollection{Brendel2019,
  author    = {Brendel, Nina},
  title     = {(How) do students reflect on sustainability?},
  series = {Issues in Teaching and Learning of Education for Sustainability},
  booktitle = {Issues in Teaching and Learning of Education for Sustainability},
  editor    = {Chang, Chew-Hung and Kidman, Gillian and Wi, Andy},
  publisher = {Routledge},
  address   = {Abingdon},
  isbn      = {978-0-429-45043-3},
  doi       = {10.4324/9780429450433},
  pages     = {117 -- 126},
  year      = {2019},
  abstract  = {The ability to reflect is considered an essential element of Education for Sustainable Development (ESD) and a key competence for learners and educators in ESD (UNECE Strategy for ESD, 2012). In contrast to its high importance, little is known about how reflective thinking can be identified, influenced or increased in the classroom. Therefore, the objective of this study is to address this need by developing an empirical multi-stage model designed to help educators diagnose different levels of reflective thinking and to identify factors that influence students' reflective thinking about sustainability. Based on a 4-8-week project with grade 10 and 11 students studying sustainability, reflective thinking performance using weblogs as reflective journals was analysed. In addition, qualitative semi-structured interviews were conducted with the teachers to comprehend the learning environment and the personal value they assigned to ESD in their geography class. To determine the levels of reflective thinking achieved by the students, the study built on the work of Dewey (1933) and pre-existing multi-stage models of reflective thinking (Bain, Ballantyne, \& Packer, 1999; Chen, Wei, Wu, \& Uden, 2009). Using a qualitative, iterative data analysis, the study adapted the stage models to be applicable in ESD and found great differences in the students' reflection levels. Furthermore, the study identified eight factors that influence students' reflective thinking about sustainability. The outcomes of this study may be valuable for educators in high school and higher education, who seek to diagnose their students' reflective thinking performance and facilitate reflection about sustainability.},
  language  = {en}
}
@article{GehringDorschDoerfler2019,
  author    = {Gehring, Thomas and Dorsch, Christian and D{\"o}rfler, Thomas},
  title     = {Precedent and doctrine in organisational decision-making},
  series = {Journal of international relations and development},
  volume    = {22},
  journal   = {Journal of international relations and development},
  number    = {1},
  publisher = {Palgrave Macmillan},
  address   = {Basingstoke},
  issn      = {1581-1980},
  doi       = {10.1057/s41268-017-0101-5},
  pages     = {107 -- 135},
  year      = {2019},
  abstract  = {We examine how and under what conditions informal institutional constraints, such as precedent and doctrine, are likely to affect collective choice within international organisations even in the absence of powerful bureaucratic agents. With a particular focus on the United Nations Security Council, we first develop a theoretical account of why such informal constraints might affect collective decisions even of powerful and strategically behaving actors. We show that precedents provide focal points that allow adopting collective decisions in coordination situations despite diverging preferences. Reliance on previous cases creates tacitly evolving doctrine that may develop incrementally. Council decision-making is also likely to be facilitated by an institutional logic of escalation driven by institutional constraints following from the typically staged response to crisis situations. We explore the usefulness of our theoretical argument with evidence from the Council doctrine on terrorism that has evolved since 1985. The key decisions studied include the 1992 sanctions resolution against Libya and the 2001 Council response to the 9/11 attacks. We conclude that, even within intergovernmentally structured international organisations, member states do not operate on a clean slate, but in a highly institutionalised environment that shapes their opportunities for action.},
  language  = {en}
}
@article{KalinowskiEgertGronostajetal.2019,
  author    = {Kalinowski, Eva and Egert, Franziska and Gronostaj, Anna and Vock, Miriam},
  title     = {Professional development on fostering students' academic language proficiency across the curriculum},
  series = {Teaching and teacher education},
  volume    = {88},
  journal   = {Teaching and teacher education},
  publisher = {Elsevier Science},
  address   = {Amsterdam},
  issn      = {0742-051X},
  doi       = {10.1016/j.tate.2019.102971},
  pages     = {15},
  year      = {2019},
  abstract  = {This meta-analysis aggregates effects from 10 studies evaluating professional development interventions aimed at qualifying in-service teachers to support their students in mastering academic language skills while teaching their respective subject areas. The analysis of a subset of studies revealed a small non-significant weighted training effect on teachers' cognition (g' = 0.21, SE = 0.14). An effect aggregation including all studies (with 650 teachers) revealed a medium to large weighted overall effect on teachers' classroom practices (g' = 0.71, SE = 0.16). Methodological variables moderated the effect magnitude. Nevertheless, the results suggest professional development is beneficial for improving teachers' practice.},
  language  = {en}
}
@incollection{Steiger2019,
  author    = {Steiger, Dominik},
  title     = {International law and new challenges to democracy in the digital age},
  series = {Big data, political campaigning and the law : democracy and privacy in the age of micro-targeting},
  booktitle = {Big data, political campaigning and the law : democracy and privacy in the age of micro-targeting},
  editor    = {Witzleb, Normann and Paterson, Moira and Richardson, Janice},
  publisher = {Routledge},
  address   = {London},
  isbn      = {9780429288654},
  doi       = {10.4324/9780429288654},
  pages     = {71 -- 98},
  year      = {2019},
  abstract  = {This chapter aims to analyse whether and how democracy is actually threatened by big-data-based operations and what role international law can play to respond to this possible threat. It shows how big-data-based operations challenge democracy and how international law can help in defending it. The chapter focuses on both state and non-state actors may undermine democracy through big data operations; although democracy as such is a rather underdeveloped concept in international law, which is often more concerned with effectivity than legitimacy - international law protects against these challenges via a democracy-based approach rooted in international human rights law on the one hand, and the principle of non-intervention on the other hand. Thus, although democracy does not play a major role in international law, international law nevertheless is able to protect democracy against challenges from the inside as well as outside.},
  language  = {en}
}
@article{DraisbachChristenNaumann2019,
  author    = {Draisbach, Uwe and Christen, Peter and Naumann, Felix},
  title     = {Transforming pairwise duplicates to entity clusters for high-quality duplicate detection},
  series = {ACM Journal of Data and Information Quality},
  volume    = {12},
  journal   = {ACM Journal of Data and Information Quality},
  number    = {1},
  publisher = {Association for Computing Machinery},
  address   = {New York},
  issn      = {1936-1955},
  doi       = {10.1145/3352591},
  pages     = {1 -- 30},
  year      = {2019},
  abstract  = {Duplicate detection algorithms produce clusters of database records, each cluster representing a single real-world entity. As most of these algorithms use pairwise comparisons, the resulting (transitive) clusters can be inconsistent: Not all records within a cluster are sufficiently similar to be classified as duplicate. Thus, one of many subsequent clustering algorithms can further improve the result. <br /> We explain in detail, compare, and evaluate many of these algorithms and introduce three new clustering algorithms in the specific context of duplicate detection. Two of our three new algorithms use the structure of the input graph to create consistent clusters. Our third algorithm, and many other clustering algorithms, focus on the edge weights, instead. For evaluation, in contrast to related work, we experiment on true real-world datasets, and in addition examine in great detail various pair-selection strategies used in practice. While no overall winner emerges, we are able to identify best approaches for different situations. In scenarios with larger clusters, our proposed algorithm, Extended Maximum Clique Clustering (EMCC), and Markov Clustering show the best results. EMCC especially outperforms Markov Clustering regarding the precision of the results and additionally has the advantage that it can also be used in scenarios where edge weights are not available.},
  language  = {en}
}
@article{SchuefflerThimHaaseetal.2019,
  author    = {Sch{\"u}ffler, Arnulf and Thim, Christof and Haase, Jennifer and Gronau, Norbert and Kluge, Annette},
  title     = {Information processing in work environment 4.0 and the beneficial impact of intentional forgetting on change management},
  series = {Zeitschrift f{\"u}r Arbeits- und Organisationspsychologie : german journal of work and organizational psychology},
  volume    = {64},
  journal   = {Zeitschrift f{\"u}r Arbeits- und Organisationspsychologie : german journal of work and organizational psychology},
  number    = {1},
  publisher = {Hogrefe},
  address   = {G{\"o}ttingen},
  issn      = {0932-4089},
  doi       = {10.1026/0932-4089/a000307},
  pages     = {17 -- 29},
  year      = {2019},
  abstract  = {Industry 4.0, based on increasingly progressive digitalization, is a global phenomenon that affects every part of our work. The Internet of Things (IoT) is pushing the process of automation, culminating in the total autonomy of cyber-physical systems. This process is accompanied by a massive amount of data, information, and new dimensions of flexibility. As the amount of available data increases, their specific timeliness decreases. Mastering Industry 4.0 requires humans to master the new dimensions of information and to adapt to relevant ongoing changes. Intentional forgetting can make a difference in this context, as it discards nonprevailing information and actions in favor of prevailing ones. Intentional forgetting is the basis of any adaptation to change, as it ensures that nonprevailing memory items are not retrieved while prevailing ones are retained. This study presents a novel experimental approach that was introduced in a learning factory (the Research and Application Center Industry 4.0) to investigate intentional forgetting as it applies to production routines. In the first experiment (N = 18), in which the participants collectively performed 3046 routine related actions (t1 = 1402, t2 = 1644), the results showed that highly proceduralized actions were more difficult to forget than actions that were less well-learned. Additionally, we found that the quality of cues that trigger the execution of routine actions had no effect on the extent of intentional forgetting.},
  language  = {en}
}
@article{BiloLenzner2019,
  author    = {Bil{\`o}, Davide and Lenzner, Pascal},
  title     = {On the tree conjecture for the network creation game},
  series = {Theory of computing systems},
  volume    = {64},
  journal   = {Theory of computing systems},
  number    = {3},
  publisher = {Springer},
  address   = {New York},
  issn      = {1432-4350},
  doi       = {10.1007/s00224-019-09945-9},
  pages     = {422 -- 443},
  year      = {2019},
  abstract  = {Selfish Network Creation focuses on modeling real world networks from a game-theoretic point of view. One of the classic models by Fabrikant et al. (2003) is the network creation game, where agents correspond to nodes in a network which buy incident edges for the price of alpha per edge to minimize their total distance to all other nodes. The model is well-studied but still has intriguing open problems. The most famous conjectures state that the price of anarchy is constant for all alpha and that for alpha >= n all equilibrium networks are trees. We introduce a novel technique for analyzing stable networks for high edge-price alpha and employ it to improve on the best known bound for the latter conjecture. In particular we show that for alpha > 4n - 13 all equilibrium networks must be trees, which implies a constant price of anarchy for this range of alpha. Moreover, we also improve the constant upper bound on the price of anarchy for equilibrium trees.},
  language  = {en}
}
@article{GehringDoerfler2019,
  author    = {Gehring, Thomas and D{\"o}rfler, Thomas},
  title     = {Constitutive mechanisms of UN Security Council practices},
  series = {Review of International Studies},
  volume    = {45},
  journal   = {Review of International Studies},
  number    = {1},
  publisher = {Univ.},
  address   = {Cambridge},
  issn      = {0260-2105},
  doi       = {10.1017/S0260210518000268},
  pages     = {120 -- 140},
  year      = {2019},
  abstract  = {Based upon the current debate on international practices with its focus on taken-for-granted everyday practices, we examine how Security Council practices may affect member state action and collective decisions on intrastate conflicts. We outline a concept that integrates the structuring effect of practices and their emergence from interaction among reflective actors. It promises to overcome the unresolved tension between understanding practices as a social regularity and as a fluid entity. We analyse the constitutive mechanisms of two Council practices that affect collective decisions on intrastate conflicts and elucidate how even reflective Council members become enmeshed with the constraining implications of evolving practices and their normative implications. (1) Previous Council decisions create precedent pressure and give rise to a virtually uncontested permissive Council practice that defines the purview for intervention into such conflicts. (2) A ratcheting practice forces opponents to choose between accepting steadily reinforced Council action, as occurred regarding Sudan/Darfur, and outright blockade, as in the case of Syria. We conclude that practices constitute a source of influence that is not captured by the traditional perspectives on Council activities as the consequence of geopolitical interests or of externally evolving international norms like the 'responsibility to protect' (R2P).},
  language  = {en}
}
@book{Doerfler2019,
  author    = {D{\"o}rfler, Thomas},
  title     = {Security council sanctions governance},
  series = {Routledge research on the United Nations ; 6},
  journal   = {Routledge research on the United Nations ; 6},
  publisher = {Routledge},
  address   = {London},
  isbn      = {978-0-42944-232-2},
  doi       = {10.4324/9780429442322},
  pages     = {xiii, 239},
  year      = {2019},
  abstract  = {Little is known about how far-reaching decisions in UN Security Council sanctions committees are made. Developing a novel committee governance concept and using examples drawn from sanctions imposed on Iraq, Al-Qaida, Congo, Sudan and Iran, this book shows that Council members tend to follow the will of the powerful, whereas sanctions committee members often decide according to the rules. This is surprising since both Council and committees are staffed by the same member states. Offering a fascinating account of Security Council micro-politics and decision-making processes on sanctions, this rigorous comparative and theory-driven analysis treats the Council and its sanctions committees as distinguishable entities that may differ in decision practice despite having the same members. Drawing extensively on primary documents, diplomatic cables, well-informed press coverage, reports by close observers and extensive interviews with committee members, Council diplomats and sanctions experts, it contrasts with the conventional wisdom on decision-making within these bodies, which suggests that the powerful permanent members would not accept rule-based decisions against their interests. This book will be of interest to policy practitioners and scholars working in the broad field of international organizations and international relations theory as well as those specializing in sanctions, international law, the Security Council and counter-terrorism.},
  language  = {en}
}
@article{Leib2019,
  author    = {Leib, Julia},
  title     = {The security and justice approach in liberia's peace process},
  series = {Peace economics, peace science, and public policy},
  volume    = {25},
  journal   = {Peace economics, peace science, and public policy},
  number    = {4},
  publisher = {de Gruyter},
  address   = {Berlin},
  issn      = {1554-8597},
  doi       = {10.1515/peps-2019-0033},
  pages     = {6},
  year      = {2019},
  abstract  = {From the international perspective, the peace process in Liberia has generally been described as a successful model for international peacebuilding interventions. But how do Liberians perceive the peace process in their country? The aim of this paper is to complement an institutionalist approach looking at the security and justice mechanism in Liberia with some insights into local perceptions in order to answer the following question: how do Liberians perceive the peace process in their country and which institutions have been supportive for the establishment of sustaining peace? After briefly introducing the background of the Liberian conflict and the data collection, I present first results, analyzing the mechanism linking two peacebuilding institutions (peacekeeping and transitional justice) with the establishment of sustaining peace in Liberia.},
  language  = {en}
}
@article{Felser2019,
  author    = {Felser, Claudia},
  title     = {Do processing resource limitations shape heritage language grammars?},
  series = {Bilingualism : language and cognition},
  volume    = {23},
  journal   = {Bilingualism : language and cognition},
  number    = {1},
  publisher = {Cambridge University Press},
  address   = {New York},
  issn      = {1366-7289},
  doi       = {10.1017/S1366728919000397},
  pages     = {23 -- 24},
  year      = {2019},
  language  = {en}
}
@article{VehKorupWalz2019,
  author    = {Veh, Georg and Korup, Oliver and Walz, Ariane},
  title     = {Hazard from Himalayan glacier lake outburst floods},
  series = {Proceedings of the National Academy of Sciences of the United States of America : PNAS},
  volume    = {117},
  journal   = {Proceedings of the National Academy of Sciences of the United States of America : PNAS},
  number    = {2},
  publisher = {National Academy of Sciences},
  address   = {Washington},
  issn      = {0027-8424},
  doi       = {10.1073/pnas.1914898117},
  pages     = {907 -- 912},
  year      = {2019},
  abstract  = {Sustained glacier melt in the Himalayas has gradually spawned more than 5,000 glacier lakes that are dammed by potentially unstable moraines. When such dams break, glacier lake outburst floods (GLOFs) can cause catastrophic societal and geomorphic impacts. We present a robust probabilistic estimate of average GLOFs return periods in the Himalayan region, drawing on 5.4 billion simulations. We find that the 100-y outburst flood has an average volume of 33.5(+3.7)/(-3.7) x 10(6) m(3) (posterior mean and 95\% highest density interval [HDI]) with a peak discharge of 15,600(+2.000)/(-1,800) m(3).S-1. Our estimated GLOF hazard is tied to the rate of historic lake outbursts and the number of present lakes, which both are highest in the Eastern Himalayas. There, the estimated 100-y GLOF discharge (similar to 14,500 m(3).s(-1)) is more than 3 times that of the adjacent Nyainqentanglha Mountains, and at least an order of magnitude higher than in the Hindu Kush, Karakoram, and Western Himalayas. The GLOF hazard may increase in these regions that currently have large glaciers, but few lakes, if future projected ice loss generates more unstable moraine-dammed lakes than we recognize today. Flood peaks from GLOFs mostly attenuate within Himalayan headwaters, but can rival monsoon-fed discharges in major rivers hundreds to thousands of kilometers downstream. Projections of future hazard from meteorological floods need to account for the extreme runoffs during lake outbursts, given the increasing trends in population, infrastructure, and hydropower projects in Himalayan headwaters.},
  language  = {en}
}
@article{WestphalVockLazarides2019,
  author    = {Westphal, Andrea and Vock, Miriam and Lazarides, Rebecca},
  title     = {Are more conscientious seventh- and ninth-graders less likely to be retained?},
  series = {Journal of applied developmental psychology : an internat. multidisciplinary},
  volume    = {66},
  journal   = {Journal of applied developmental psychology : an internat. multidisciplinary},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0193-3973},
  doi       = {10.1016/j.appdev.2019.101088},
  pages     = {12},
  year      = {2019},
  abstract  = {Previous research has identified students' personality traits, especially conscientiousness, as highly relevant predictors of academic success. Less is known about the role of Big Five personality traits in students when it comes to teachers' decisions about students' educational trajectories and whether personality traits differentially affect these decisions by teachers in different grade levels. This study examines to what extent students' Big Five personality traits affect teacher decisions on grade retention, looking at two cohorts of 12,146 ninth-grade and 6002 seventh-grade students from the German National Educational Panel Study. In both grade levels, multilevel logistic mediation models show that students' conscientiousness indirectly predicts grade retention through the assignment of grades by teachers. In the ninth-grade sample, students' conscientiousness was additionally a direct predictor of retention, distinct from teacher-assigned grades. We discuss potential underlying mechanisms and explore whether teachers base their decisions on different indicators when retaining seventh-grade students or ninth-grade students.},
  language  = {en}
}
@article{KleinpeterKoch2019,
  author    = {Kleinpeter, Erich and Koch, Andreas},
  title     = {The 13 C chemical shift and the anisotropy effect of the carbene electron-deficient centre},
  series = {Magnetic resonance in chemistry},
  volume    = {58},
  journal   = {Magnetic resonance in chemistry},
  number    = {3},
  publisher = {Wiley},
  address   = {Hoboken},
  issn      = {0749-1581},
  doi       = {10.1002/mrc.4979},
  pages     = {280 -- 292},
  year      = {2019},
  abstract  = {Both the C-13 chemical shift and the calculated anisotropy effect (spatial magnetic properties) of the electron-deficient centre of stable, crystalline, and structurally characterized carbenes have been employed to unequivocally characterize potential resonance contributors to the present mesomerism (carbene, ylide, betaine, and zwitter ion) and to determine quantitatively the electron deficiency of the corresponding carbene carbon atom. Prior to that, both structures and C-13 chemical shifts were calculated and compared with the experimental delta(C-13)/ppm values and geometry parameters (as a quality criterion for obtained structures).},
  language  = {en}
}
@inproceedings{BenderThimLinke2019,
  author    = {Bender, Benedict and Thim, Christof and Linke, Felix},
  title     = {Platform coring in the browser domain},
  series = {Proceedings Information Systems - The Heart of Innovation Ecosystems (ICIS 2019)},
  booktitle = {Proceedings Information Systems - The Heart of Innovation Ecosystems (ICIS 2019)},
  isbn      = {978-0-9966831-9-7},
  year      = {2019},
  abstract  = {Modern web browsers are digital software platforms, as they allow third-parties to extend functionality by providing extensions. Given the intense competition, differentiation through provided functionality is a key factor for browser platforms. As browsers progress, they constantly release new features. Browsers might thereby enter complementary markets if they add functionality formerly provided by third-party extensions, which is referred to as 'platform coring'. Previous studies missed the perspective of the involved parties. To address this gap, we conduct interviews with third-party and core developers in the security and privacy domain from Firefox and Chrome. In essence, the study provides three contributions. First, insights into stakeholder-specific issues concerning coring. Second, measures to prevent coring. Third, strategical guidance for developers and owners. Third-parties experienced and core developers acknowledged coring to occur on browser platforms. While developers with extrinsic motivations assess coring negatively, developers with intrinsic motivations perceive coring positively.},
  language  = {en}
}
@inproceedings{Apelojg2019,
  author    = {Apelojg, Benjamin},
  title     = {What´s going on?! Needs and emotions during classes},
  series = {9th International Conference on Society and Information Technologies (ICSIT 2018)},
  booktitle = {9th International Conference on Society and Information Technologies (ICSIT 2018)},
  number    = {1},
  publisher = {Curran Associates},
  address   = {Red Hook},
  isbn      = {978-1-5108-9702-1},
  pages     = {85 -- 88},
  year      = {2019},
  abstract  = {The "output-orientation" is omnipresent in teacher education. In order to evaluate teachers' and students' performances, a wide range of different quantitative questionnaires exist worldwide. One important goal of teaching evaluation is to increase the quality of teaching and learning. The author argues, that standard evaluations which are typically made at the end of the semester are problematic due to two reasons. The first one is that some of the questions are too general and don`t offer concrete ideas as to what kind of actions can be taken to make the courses better. The second problem is that the evaluation is mostly made when the course is already over. Because of this criticism, Apelojg invented the Felix-App which offers the possibility to give feedback in real-time by asking for the emotions and needs that occur during different learning situations. The idea is very simple: positive emotions and satisfied needs are helpful for the learning process. Negative emotions and unsatisfied needs have negative effects on the learning process. First descriptive results show, that "managing emotions" during classes can have positive effects on both motivation and emotions.},
  language  = {en}
}
@article{RiedererVerwiebeSeewann2019,
  author    = {Riederer, Bernhard Edwin and Verwiebe, Roland and Seewann, Lena},
  title     = {Changing social stratification in Vienna},
  series = {Population, Space and Place},
  volume    = {25},
  journal   = {Population, Space and Place},
  number    = {2},
  publisher = {Wiley-Blackwell},
  address   = {New York},
  issn      = {1544-8444},
  doi       = {10.1002/psp.2215},
  pages     = {1 -- 11},
  year      = {2019},
  abstract  = {The social stratification systems of major cities are transforming all around the globe. International research has been discussing this trend and focus on changing occupational classes. However, the precise effects on urban households, taking social welfare and different family arrangements into account, as well as the precise effects on people with a migration background, remain unclear. Using the example of Vienna, this article examines immigration as a key dimension for social stratification. Although household income structures in Austria have remained comparatively stable over the past two decades, the middle-income share in Vienna (as the sole metropolis in Austria) has dramatically decreased. This predominantly affects people from migrant backgrounds. Using a comprehensive dataset (two waves, N = 16,700 participants, including N = 4,500 migrants), we systematically examine the role of (a) migration-specific and (b) education- and employment-related factors to explain the decline of middle-income migrants. The results of multinomial logistic regression and decomposition analyses suggest that transformations in the labour market is the main driving force. Changing migrant characteristics have counteracted this process. If today's migrants displayed similar showed characteristics (e.g., origin and educational levels) to those prevalent in the past decade, the ethnic stratification disparities would have been even stronger.},
  language  = {en}
}
@article{VerwiebeKittelDellingeretal.2019,
  author    = {Verwiebe, Roland and Kittel, Bernhard and Dellinger, Fanny and Liebhart, Christina and Schiestl, David and Haindorfer, Raimund and Liedl, Bernd},
  title     = {Finding your way into employment against all odds?},
  series = {Journal of ethnic and migration studies},
  volume    = {45},
  journal   = {Journal of ethnic and migration studies},
  number    = {9},
  publisher = {Routledge},
  address   = {Abingdon},
  issn      = {1369-183X},
  doi       = {10.1080/1369183X.2018.1552826},
  pages     = {1401 -- 1418},
  year      = {2019},
  abstract  = {Labour market entry poses enormous challenges for recently arrived refugees, ranging from language barriers, devaluation of human capital, unfamiliarity with customs of the job search process to outright discrimination. How can refugees overcome these challenges and quickly enter gainful employment? In this paper, we draw on interviews with 26 male and female refugees from Syria, Afghanistan, Iraq and Iran, conducted in 2017 and 2018, who came to Austria in 2015 and 2014 and who have successfully entered employment. We depict refugees' own perspectives on and strategies for fast job entry and integration. Personal agency and a proactive approach of seeking and seizing opportunities are key for overcoming initial barriers and entering upon positive integration pathways. At the same time, refugees' personal agency is essential for establishing social ties to the host society, which also play a crucial role in early labour market integration. Finally, institutions of the Austrian labour market (the 'apprenticeship'-system) interact with refugees' agency in most intricate ways, both setting up nearly insurmountable barriers but also providing specific opportunities for refugees.},
  language  = {en}
}
@article{FritschVerwiebeLiedl2019,
  author    = {Fritsch, Nina-Sophie and Verwiebe, Roland and Liedl, Bernd},
  title     = {Declining Gender Differences in Low-Wage Employment in Germany, Austria and Switzerland},
  series = {Comparative Sociology},
  volume    = {18},
  journal   = {Comparative Sociology},
  number    = {4},
  publisher = {Brill},
  address   = {Leiden},
  issn      = {1569-1330},
  doi       = {10.1163/15691330-12341507},
  pages     = {449 -- 448},
  year      = {2019},
  abstract  = {Although the low-wage employment sector has enlarged over the past 20 years in the context of pronounced flexibility in restructured labor markets, gender differences in low-wage employment have declined in Germany, Austria and Switzerland. In this article, the authors examine reasons for declining gender inequalities, and most notably concentrate on explanations for the closing gender gap in low-wage employment risks. In addition, they identify differences and similarities among the German-speaking countries. Based on regression techniques and decomposition analyses (1996-2016), the authors find significantly decreasing labor market risks for the female workforce. Detailed analysis reveals that (1) the concrete positioning in the labor market shows greater importance in explaining declining gender differences compared to personal characteristics. (2) The changed composition of the labor markets has prevented the low-wage sector from increasing even more in general and works in favor of the female workforce and their low-wage employment risks in particular.},
  language  = {en}
}
@article{QuarmbyKhajooeiEngeletal.2019,
  author    = {Quarmby, Andrew James and Khajooei, Mina and Engel, Tilman and Kaplick, Hannes and Mayer, Frank},
  title     = {The feasibility of a split-belt instrumented treadmill running protocol with perturbations},
  series = {Journal of biomechanics},
  volume    = {98},
  journal   = {Journal of biomechanics},
  publisher = {Elsevier},
  address   = {Oxford},
  issn      = {0021-9290},
  doi       = {10.1016/j.jbiomech.2019.109493},
  pages     = {5},
  year      = {2019},
  abstract  = {Unexpected perturbations during locomotion can occur during daily life or sports performance. Adequate compensation for such perturbations is crucial in maintaining effective postural control. Studies utilising instrumented treadmills have previously validated perturbed walking protocols, however responses to perturbed running protocols remain less investigated. Therefore, the purpose of this study was to investigate the feasibility of a new instrumented treadmill-perturbed running protocol. <br /> Fifteen participants (age = 2 8 +/- 3 years; height = 172 +/- 9 cm; weight = 69 +/- 10 kg; 60\% female) completed an 8-minute running protocol at baseline velocity of 2.5 m/s (9 km/h), whilst 15 one-sided belt perturbations were applied (pre-set perturbation characteristics: 150 ms delay (post-heel contact); 2.0 m/s amplitude; 100 ms duration). Perturbation characteristics and EMG responses were recorded. Bland-Altman analysis (BLA) was employed (bias +/- limits of agreement (LOA; bias +/- 1.96*SD)) and intra-individual variability of repeated perturbations was assessed via Coefficients of Variation (CV) (mean +/- SD). <br /> On average, 9.4 +/- 2.2 of 15 intended perturbations were successful. Perturbation delay was 143 +/- 10 ms, amplitude was 1.7 +/- 0.2 m/s and duration was 69 +/- 10 ms. BLA showed -7 +/- 13 ms for delay, -0.3 +/- 0.1 m/s for amplitude and -30 +/- 10 ms for duration. CV showed variability of 19 +/- 4.5\% for delay, 58 +/- 12\% for amplitude and 30 +/- 7\% for duration. EMG RMS amplitudes of the legs and trunk ranged from 113 +/- 25\% to 332 +/- 305\% when compared to unperturbed gait. This study showed that the application of sudden perturbations during running can be achieved, though with increased variability across individuals. The perturbations with the above characteristics appear to have elicited a neuromuscular response during running.},
  language  = {en}
}
@phdthesis{Chaabene2019,
  author    = {Chaabene, Helmi},
  title     = {Effects of resistance training on measures of physical fitness in young athletes},
  school      = {Universit{\"a}t Potsdam},
  year      = {2019},
  language  = {en}
}
@article{TomaszewskaSchuster2019,
  author    = {Tomaszewska, Paulina and Schuster, Isabell},
  title     = {Comparing sexuality-related cognitions, sexual behavior, and acceptance of sexual coercion in dating app users and non-users},
  series = {Sexuality research \& social policy},
  volume    = {17},
  journal   = {Sexuality research \& social policy},
  number    = {2},
  publisher = {Springer},
  address   = {New York},
  issn      = {1868-9884},
  doi       = {10.1007/s13178-019-00397-x},
  pages     = {188 -- 198},
  year      = {2019},
  abstract  = {Using dating apps has become popular for many young adults worldwide, promising the chance to meet new sexual partners. Because there is evidence that using dating apps may be associated with risky sexual behavior, this study compared users and non-users concerning their sexuality-related cognitions, namely their risky sexual scripts and sexual self-esteem, as well as their risky and sexually assertive behavior. It also explored the link between dating app use and acceptance of sexual coercion. A total of 491 young heterosexual adults (295 female) participated in an online survey advertised in social media and college libraries in Germany. Results indicated that users had more risky sexual scripts and reported more risky sexual behavior than non-users. Furthermore, male dating app users had lower sexual self-esteem and higher acceptance of sexual coercion than male non-users. In both gender groups, dating app use predicted casual sexual activity via a more risky casual sex script. Gender differences, potential underlying mechanisms, and directions for future research are discussed.},
  language  = {en}
}
@phdthesis{Sotiropoulou2019,
  author    = {Sotiropoulou, Stavroula},
  title     = {Pleiotropy of phonetic indices in the expression of syllabic organization},
  doi       = {10.25932/publishup-54639},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-546399},
  school      = {Universit{\"a}t Potsdam},
  pages     = {xv, 184},
  year      = {2019},
  abstract  = {This dissertation is concerned with the relation between qualitative phonological organization in the form of syllabic structure and continuous phonetics, that is, the spatial and temporal dimensions of vocal tract action that express syllabic structure. The main claim of the dissertation is twofold. First, we argue that syllabic organization exerts multiple effects on the spatio-temporal properties of the segments that partake in that organization. That is, there is no unique or privileged exponent of syllabic organization. Rather, syllabic organization is expressed in a pleiotropy of phonetic indices. Second, we claim that a better understanding of the relation between qualitative phonological organization and continuous phonetics is reached when one considers how the string of segments (over which the nature of the phonological organization is assessed) responds to perturbations (scaling of phonetic variables) of localized properties (such as durations) within that string. Specifically, variation in phonetic variables and more specifically prosodic variation is a crucial key to understanding the nature of the link between (phonological) syllabic organization and the phonetic spatio-temporal manifestation of that organization. The effects of prosodic variation on segmental properties and on the overlap between the segments, we argue, offer the right pathway to discover patterns related to syllabic organization. In our approach, to uncover evidence for global organization, the sequence of segments partaking in that organization as well as properties of these segments or their relations with one another must be somehow locally varied. The consequences of such variation on the rest of the sequence can then be used to unveil the span of organization. When local perturbations to segments or relations between adjacent segments have effects that ripple through the rest of the sequence, this is evidence that organization is global. If instead local perturbations stay local with no consequences for the rest of the whole, this indicates that organization is local.},
  language  = {en}
}
@article{KundeMartinsPremieretal.2019,
  author    = {Kunde, Miriam N. and Martins, Renata Filipa and Premier, Joe and Fickel, J{\"o}rns and F{\"o}rster, Daniel W.},
  title     = {Population and landscape genetic analysis of the Malayan sun bear Helarctos malayanus},
  series = {Conservation genetics},
  volume    = {21},
  journal   = {Conservation genetics},
  number    = {1},
  publisher = {Springer},
  address   = {Dordrecht},
  issn      = {1566-0621},
  doi       = {10.1007/s10592-019-01233-w},
  pages     = {123 -- 135},
  year      = {2019},
  abstract  = {Conservation genetics can provide data needed by conservation practitioners for their decisions regarding the management of vulnerable or endangered species, such as the sun bear Helarctos malayanus. Throughout its range, the sun bear is threatened by loss and fragmentation of its habitat and the illegal trade of both live bears and bear parts. Sharply declining population numbers and population sizes, and a lack of natural dispersal between populations all threaten the genetic diversity of the remaining populations of this species. In this first population genetics study of sun bears using microsatellite markers, we analyzed 68 sun bear samples from Cambodia to investigate population structure and genetic diversity. We found evidence for two genetically distinct populations in the West and East of Cambodia. Ongoing or recent gene flow between these populations does not appear sufficient to alleviate loss of diversity in these populations, one of which (West Cambodia) is characterized by significant inbreeding. We were able to assign 85\% of sun bears of unknown origin to one of the two populations with high confidence (assignment probability >= 85\%), providing valuable information for future bear reintroduction programs. Further, our results suggest that developed land (mostly agricultural mosaics) acts as a barrier to gene flow for sun bears in Cambodia. We highlight that regional sun bear conservation action plans should consider promoting population connectivity and enforcing wildlife protection of this threatened species.},
  language  = {en}
}
@article{JessenVerissimoClahsen2019,
  author    = {Jessen, Anna and Verissimo, Jo{\~a}o Marques and Clahsen, Harald},
  title     = {Variability and consistency in late bilinguals' morphology},
  series = {The mental lexicon},
  volume    = {13},
  journal   = {The mental lexicon},
  number    = {2},
  publisher = {John Benjamins Publishing Co.},
  address   = {Amsterdam},
  issn      = {1871-1340},
  doi       = {10.1075/ml.18002.jes},
  pages     = {186 -- 214},
  year      = {2019},
  abstract  = {Speaking a late-learned second language (L2) is supposed to yield more variable and less consistent output than speaking one's first language (L1), particularly with respect to reliably adhering to grammatical morphology. The current study investigates both internal processes involved in encoding morphologically complex words - by recording event-related brain potentials (ERPs) during participants' silent productions - and the corresponding overt output. We specifically examined compounds with plural or singular modifiers in English. Thirty-one advanced L2 speakers of English (L1: German) were compared to a control group of 20 L1 English speakers from an earlier study. We found an enhanced (right-frontal) negativity during (silent) morphological encoding for compounds produced from regular plural forms relative to compounds formed from irregular plurals, replicating the ERP effect obtained for the L1 group. The L2 speakers' overt productions, however, were significantly less consistent than those of the L1 speakers on the same task. We suggest that L2 speakers employ the same mechanisms for morphological encoding as L1 speakers, but with less reliance on grammatical constraints than L1 speakers.},
  language  = {en}
}
@misc{BinTareafBergerHennigetal.2019,
  author    = {Bin Tareaf, Raad and Berger, Philipp and Hennig, Patrick and Meinel, Christoph},
  title     = {Personality exploration system for online social networks},
  series = {2018 IEEE/WIC/ACM International Conference on Web Intelligence (WI)},
  journal   = {2018 IEEE/WIC/ACM International Conference on Web Intelligence (WI)},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {978-1-5386-7325-6},
  doi       = {10.1109/WI.2018.00-76},
  pages     = {301 -- 309},
  year      = {2019},
  abstract  = {User-generated content on social media platforms is a rich source of latent information about individual variables. Crawling and analyzing this content provides a new approach for enterprises to personalize services and put forward product recommendations. In the past few years, brands made a gradual appearance on social media platforms for advertisement, customers support and public relation purposes and by now it became a necessity throughout all branches. This online identity can be represented as a brand personality that reflects how a brand is perceived by its customers. We exploited recent research in text analysis and personality detection to build an automatic brand personality prediction model on top of the (Five-Factor Model) and (Linguistic Inquiry and Word Count) features extracted from publicly available benchmarks. The proposed model reported significant accuracy in predicting specific personality traits form brands. For evaluating our prediction results on actual brands, we crawled the Facebook API for 100k posts from the most valuable brands' pages in the USA and we visualize exemplars of comparison results and present suggestions for future directions.},
  language  = {en}
}
@misc{AndjelkovicBabicLietal.2019,
  author    = {Andjelkovic, Marko and Babic, Milan and Li, Yuanqing and Schrape, Oliver and Krstić, Miloš and Kraemer, Rolf},
  title     = {Use of decoupling cells for mitigation of SET effects in CMOS combinational gates},
  series = {2018 25th IEEE International Conference on Electronics, Circuits and Systems (ICECS)},
  journal   = {2018 25th IEEE International Conference on Electronics, Circuits and Systems (ICECS)},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {978-1-5386-9562-3},
  doi       = {10.1109/ICECS.2018.8617996},
  pages     = {361 -- 364},
  year      = {2019},
  abstract  = {This paper investigates the applicability of CMOS decoupling cells for mitigating the Single Event Transient (SET) effects in standard combinational gates. The concept is based on the insertion of two decoupling cells between the gate's output and the power/ground terminals. To verify the proposed hardening approach, extensive SPICE simulations have been performed with standard combinational cells designed in IHP's 130 nm bulk CMOS technology. Obtained simulation results have shown that the insertion of decoupling cells results in the increase of the gate's critical charge, thus reducing the gate's soft error rate (SER). Moreover, the decoupling cells facilitate the suppression of SET pulses propagating through the gate. It has been shown that the decoupling cells may be a competitive alternative to gate upsizing and gate duplication for hardening the gates with lower critical charge and multiple (3 or 4) inputs, as well as for filtering the short SET pulses induced by low-LET particles.},
  language  = {en}
}
@article{NieWangXuetal.2019,
  author    = {Nie, Yan and Wang, Weiwei and Xu, Xun and Zou, Jie and Bhuvanesh, Thanga and Schulz, Burkhard and Ma, Nan and Lendlein, Andreas},
  title     = {Enhancement of human induced pluripotent stem cells adhesion through multilayer laminin coating},
  series = {Clinical hemorheology and microcirculation : blood flow and vessels},
  volume    = {70},
  journal   = {Clinical hemorheology and microcirculation : blood flow and vessels},
  number    = {4},
  publisher = {IOS Press},
  address   = {Amsterdam},
  issn      = {1386-0291},
  doi       = {10.3233/CH-189318},
  pages     = {531 -- 542},
  year      = {2019},
  abstract  = {Bioengineered cell substrates are a highly promising tool to govern the differentiation of stem cells in vitro and to modulate the cellular behavior in vivo. While this technology works fine for adult stem cells, the cultivation of human induced pluripotent stem cells (hiPSCs) is challenging as these cells typically show poor attachment on the bioengineered substrates, which among other effects causes substantial cell death. Thus, very limited types of surfaces have been demonstrated suitable for hiPSC cultures. The multilayer coating approach that renders the surface with diverse chemical compositions, architectures, and functions can be used to improve the adhesion of hiPSCs on the bioengineered substrates. We hypothesized that a multilayer formation based on the attraction of molecules with opposite charges could functionalize the polystyrene (PS) substrates to improve the adhesion of hiPSCs. Polymeric substrates were stepwise coated, first with dopamine to form a polydopamine (PDA) layer, second with polylysine and last with Laminin-521. The multilayer formation resulted in the variation of hydrophilicity and chemical functionality of the surfaces. Hydrophilicity was detected using captive bubble method and the amount of primary and secondary amines on the surface was quantified by fluorescent staining. The PDA layer effectively immobilized the upper layers and thereby improved the attachment of hiPSCs. Cell adhesion was enhanced on the surfaces coated with multilayers, as compared to those without PDA and/or polylysine. Moreover, hiPSCs spread well over this multilayer laminin substrate. These cells maintained their proliferation capacity and differentiation potential. The multilayer coating strategy is a promising attempt for engineering polymer-based substrates for the cultivation of hiPSCs and of interest for expanding the application scope of hiPSCs.},
  language  = {en}
}
@misc{SianiparWillemsMeinel2019,
  author    = {Sianipar, Johannes Harungguan and Willems, Christian and Meinel, Christoph},
  title     = {Virtual machine integrity verification in Crowd-Resourcing Virtual Laboratory},
  series = {2018 IEEE 11th Conference on Service-Oriented Computing and Applications (SOCA)},
  journal   = {2018 IEEE 11th Conference on Service-Oriented Computing and Applications (SOCA)},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {978-1-5386-9133-5},
  issn      = {2163-2871},
  doi       = {10.1109/SOCA.2018.00032},
  pages     = {169 -- 176},
  year      = {2019},
  abstract  = {In cloud computing, users are able to use their own operating system (OS) image to run a virtual machine (VM) on a remote host. The virtual machine OS is started by the user using some interfaces provided by a cloud provider in public or private cloud. In peer to peer cloud, the VM is started by the host admin. After the VM is running, the user could get a remote access to the VM to install, configure, and run services. For the security reasons, the user needs to verify the integrity of the running VM, because a malicious host admin could modify the image or even replace the image with a similar image, to be able to get sensitive data from the VM. We propose an approach to verify the integrity of a running VM on a remote host, without using any specific hardware such as Trusted Platform Module (TPM). Our approach is implemented on a Linux platform where the kernel files (vmlinuz and initrd) could be replaced with new files, while the VM is running. kexec is used to reboot the VM with the new kernel files. The new kernel has secret codes that will be used to verify whether the VM was started using the new kernel files. The new kernel is used to further measuring the integrity of the running VM.},
  language  = {en}
}
@misc{BrandGiese2019,
  author    = {Brand, Thomas and Giese, Holger Burkhard},
  title     = {Towards Generic Adaptive Monitoring},
  series = {2018 IEEE 12th International Conference on Self-Adaptive and Self-Organizing Systems (SASO)},
  journal   = {2018 IEEE 12th International Conference on Self-Adaptive and Self-Organizing Systems (SASO)},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {978-1-5386-5172-8},
  issn      = {1949-3673},
  doi       = {10.1109/SASO.2018.00027},
  pages     = {156 -- 161},
  year      = {2019},
  abstract  = {Monitoring is a key prerequisite for self-adaptive software and many other forms of operating software. Monitoring relevant lower level phenomena like the occurrences of exceptions and diagnosis data requires to carefully examine which detailed information is really necessary and feasible to monitor. Adaptive monitoring permits observing a greater variety of details with less overhead, if most of the time the MAPE-K loop can operate using only a small subset of all those details. However, engineering such an adaptive monitoring is a major engineering effort on its own that further complicates the development of self-adaptive software. The proposed approach overcomes the outlined problems by providing generic adaptive monitoring via runtime models. It reduces the effort to introduce and apply adaptive monitoring by avoiding additional development effort for controlling the monitoring adaptation. Although the generic approach is independent from the monitoring purpose, it still allows for substantial savings regarding the monitoring resource consumption as demonstrated by an example.},
  language  = {en}
}
@misc{SianiparSukmanaMeinel2019,
  author    = {Sianipar, Johannes Harungguan and Sukmana, Muhammad Ihsan Haikal and Meinel, Christoph},
  title     = {Moving sensitive data against live memory dumping, spectre and meltdown attacks},
  series = {26th International Conference on Systems Engineering (ICSEng)},
  journal   = {26th International Conference on Systems Engineering (ICSEng)},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {978-1-5386-7834-3},
  pages     = {8},
  year      = {2019},
  abstract  = {The emergence of cloud computing allows users to easily host their Virtual Machines with no up-front investment and the guarantee of always available anytime anywhere. But with the Virtual Machine (VM) is hosted outside of user's premise, the user loses the physical control of the VM as it could be running on untrusted host machines in the cloud. Malicious host administrator could launch live memory dumping, Spectre, or Meltdown attacks in order to extract sensitive information from the VM's memory, e.g. passwords or cryptographic keys of applications running in the VM. In this paper, inspired by the moving target defense (MTD) scheme, we propose a novel approach to increase the security of application's sensitive data in the VM by continuously moving the sensitive data among several memory allocations (blocks) in Random Access Memory (RAM). A movement function is added into the application source code in order for the function to be running concurrently with the application's main function. Our approach could reduce the possibility of VM's sensitive data in the memory to be leaked into memory dump file by 2 5\% and secure the sensitive data from Spectre and Meltdown attacks. Our approach's overhead depends on the number and the size of the sensitive data.},
  language  = {en}
}
@misc{Richly2019,
  author    = {Richly, Keven},
  title     = {Leveraging spatio-temporal soccer data to define a graphical query language for game recordings},
  series = {IEEE International Conference on Big Data (Big Data)},
  journal   = {IEEE International Conference on Big Data (Big Data)},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {978-1-5386-5035-6},
  issn      = {2639-1589},
  doi       = {10.1109/BigData.2018.8622159},
  pages     = {3456 -- 3463},
  year      = {2019},
  abstract  = {For professional soccer clubs, performance and video analysis are an integral part of the preparation and post-processing of games. Coaches, scouts, and video analysts extract information about strengths and weaknesses of their team as well as opponents by manually analyzing video recordings of past games. Since video recordings are an unstructured data source, it is a complex and time-intensive task to find specific game situations and identify similar patterns. In this paper, we present a novel approach to detect patterns and situations (e.g., playmaking and ball passing of midfielders) based on trajectory data. The application uses the metaphor of a tactic board to offer a graphical query language. With this interactive tactic board, the user can model a game situation or mark a specific situation in the video recording for which all matching occurrences in various games are immediately displayed, and the user can directly jump to the corresponding game scene. Through the additional visualization of key performance indicators (e.g.,the physical load of the players), the user can get a better overall assessment of situations. With the capabilities to find specific game situations and complex patterns in video recordings, the interactive tactic board serves as a useful tool to improve the video analysis process of professional sports teams.},
  language  = {en}
}
@misc{Richly2019,
  author    = {Richly, Keven},
  title     = {A survey on trajectory data management for hybrid transactional and analytical workloads},
  series = {IEEE International Conference on Big Data (Big Data)},
  journal   = {IEEE International Conference on Big Data (Big Data)},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {978-1-5386-5035-6},
  issn      = {2639-1589},
  doi       = {10.1109/BigData.2018.8622394},
  pages     = {562 -- 569},
  year      = {2019},
  abstract  = {Rapid advances in location-acquisition technologies have led to large amounts of trajectory data. This data is the foundation for a broad spectrum of services driven and improved by trajectory data mining. However, for hybrid transactional and analytical workloads, the storing and processing of rapidly accumulated trajectory data is a non-trivial task. In this paper, we present a detailed survey about state-of-the-art trajectory data management systems. To determine the relevant aspects and requirements for such systems, we developed a trajectory data mining framework, which summarizes the different steps in the trajectory data mining process. Based on the derived requirements, we analyze different concepts to store, compress, index, and process spatio-temporal data. There are various trajectory management systems, which are optimized for scalability, data footprint reduction, elasticity, or query performance. To get a comprehensive overview, we describe and compare different exciting systems. Additionally, the observed similarities in the general structure of different systems are consolidated in a general blueprint of trajectory management systems.},
  language  = {en}
}
@inproceedings{GruenerMuehleGayvoronskayaetal.2019,
  author    = {Gr{\"u}ner, Andreas and M{\"u}hle, Alexander and Gayvoronskaya, Tatiana and Meinel, Christoph},
  title     = {A quantifiable trustmModel for Blockchain-based identity management},
  series = {IEEE 2018 International Congress on Cybermatics / 2018 IEEE Conferences on Internet of Things, Green Computing and Communications, cyber, physical and Social Computing, Smart Data, Blockchain, Computer and Information Technology},
  booktitle = {IEEE 2018 International Congress on Cybermatics / 2018 IEEE Conferences on Internet of Things, Green Computing and Communications, cyber, physical and Social Computing, Smart Data, Blockchain, Computer and Information Technology},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {978-1-5386-7975-3},
  doi       = {10.1109/Cybermatics_2018.2018.00250},
  pages     = {1475 -- 1482},
  year      = {2019},
  language  = {en}
}
@article{Kay2019,
  author    = {Kay, Alex James},
  title     = {Speaking the Unspeakable},
  series = {Holocaust Studies: A Journal of Culture and History},
  volume    = {27},
  journal   = {Holocaust Studies: A Journal of Culture and History},
  number    = {2},
  publisher = {Routledge},
  address   = {Abingdon, Oxon},
  doi       = {10.1080/17504902.2019.1637492},
  pages     = {187 -- 200},
  year      = {2019},
  abstract  = {This article discusses the filmic representation of the infamous Wannsee Conference, when fifteen senior German officials met at a villa on the shore of a Berlin lake to discuss and co-ordinate the implementation of the so-called final solution to the Jewish question. The understanding reached during the course of the ninety-minute meeting cleared the way for the Europe-wide killing of six million Jews. The article sets out to answer the principal challenge facing anyone attempting to recreate the Wannsee Conference on film: what was the atmosphere of this conference and the attitude of the participants? Moreover, it discusses various ethical aspects related to the portrayal of evil, not in actions but in words, using the medium of film. In doing so, it focuses on the BBC/HBO television film Conspiracy (2001), directed by Frank Pierson, probing its historical accuracy and discussing its artistic credibility.},
  language  = {en}
}
@article{Buerger2019,
  author    = {B{\"u}rger, Gerd},
  title     = {A seamless filter for daily to seasonal forecasts, with applications to Iran and Brazil},
  series = {Quarterly Journal of the Royal Meteorological Society},
  volume    = {146},
  journal   = {Quarterly Journal of the Royal Meteorological Society},
  number    = {726},
  publisher = {WILEY-VCH},
  address   = {Weinheim},
  pages     = {14},
  year      = {2019},
  abstract  = {A digital filter is introduced which treats the problem of predictability versus time averaging in a continuous, seamless manner. This seamless filter (SF) is characterized by a unique smoothing rule that determines the strength of smoothing in dependence on lead time. The rule needs to be specified beforehand, either by expert knowledge or by user demand. As a result, skill curves are obtained that allow a predictability assessment across a whole range of time-scales, from daily to seasonal, in a uniform manner. The SF is applied to downscaled SEAS5 ensemble forecasts for two focus regions in or near the tropical belt, the river basins of the Karun in Iran and the Sao Francisco in Brazil. Both are characterized by strong seasonality and semi-aridity, so that predictability across various time-scales is in high demand. Among other things, it is found that from the start of the water year (autumn), areal precipitation is predictable with good skill for the Karun basin two and a half months ahead; for the Sao Francisco it is only one month, longer-term prediction skill is just above the critical level.},
  language  = {en}
}
@misc{Buerger2019,
  author    = {B{\"u}rger, Gerd},
  title     = {A seamless filter for daily to seasonal forecasts, with applications to Iran and Brazil},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {726},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-52383},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-523835},
  pages     = {16},
  year      = {2019},
  abstract  = {A digital filter is introduced which treats the problem of predictability versus time averaging in a continuous, seamless manner. This seamless filter (SF) is characterized by a unique smoothing rule that determines the strength of smoothing in dependence on lead time. The rule needs to be specified beforehand, either by expert knowledge or by user demand. As a result, skill curves are obtained that allow a predictability assessment across a whole range of time-scales, from daily to seasonal, in a uniform manner. The SF is applied to downscaled SEAS5 ensemble forecasts for two focus regions in or near the tropical belt, the river basins of the Karun in Iran and the Sao Francisco in Brazil. Both are characterized by strong seasonality and semi-aridity, so that predictability across various time-scales is in high demand. Among other things, it is found that from the start of the water year (autumn), areal precipitation is predictable with good skill for the Karun basin two and a half months ahead; for the Sao Francisco it is only one month, longer-term prediction skill is just above the critical level.},
  language  = {en}
}
@article{BreternitzLehmannBarnettetal.2019,
  author    = {Breternitz, Joachim and Lehmann, Frederike and Barnett, Sarah A. and Nowell, Harriott and Schorr, Susan},
  title     = {Role of the Iodide-methylammonium interaction in the ferroelectricity of CH3NH3PbI3},
  series = {Angewandte Chemie - international edition},
  volume    = {59},
  journal   = {Angewandte Chemie - international edition},
  number    = {1},
  publisher = {John Wiley \& Sons, Inc.},
  address   = {New Jersey},
  pages     = {5},
  year      = {2019},
  abstract  = {Excellent conversion efficiencies of over 20\% and facile cell production have placed hybrid perovskites at the forefront of novel solar cell materials, with CH3NH3PbI3 being an archetypal compound. The question why CH3NH3PbI3 has such extraordinary characteristics, particularly a very efficient power conversion from absorbed light to electrical power, is hotly debated, with ferroelectricity being a promising candidate. This does, however, require the crystal structure to be non-centrosymmetric and we herein present crystallographic evidence as to how the symmetry breaking occurs on a crystallographic and, therefore, long-range level. Although the molecular cation CH3NH3+ is intrinsically polar, it is heavily disordered and this cannot be the sole reason for the ferroelectricity. We show that it, nonetheless, plays an important role, as it distorts the neighboring iodide positions from their centrosymmetric positions.},
  language  = {en}
}
@misc{BreternitzLehmannBarnettetal.2019,
  author    = {Breternitz, Joachim and Lehmann, Frederike and Barnett, Sarah A. and Nowell, Harriott and Schorr, Susan},
  title     = {Role of the Iodide-methylammonium interaction in the ferroelectricity of CH3NH3PbI3},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {1},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-51822},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-518227},
  pages     = {7},
  year      = {2019},
  abstract  = {Excellent conversion efficiencies of over 20\% and facile cell production have placed hybrid perovskites at the forefront of novel solar cell materials, with CH3NH3PbI3 being an archetypal compound. The question why CH3NH3PbI3 has such extraordinary characteristics, particularly a very efficient power conversion from absorbed light to electrical power, is hotly debated, with ferroelectricity being a promising candidate. This does, however, require the crystal structure to be non-centrosymmetric and we herein present crystallographic evidence as to how the symmetry breaking occurs on a crystallographic and, therefore, long-range level. Although the molecular cation CH3NH3+ is intrinsically polar, it is heavily disordered and this cannot be the sole reason for the ferroelectricity. We show that it, nonetheless, plays an important role, as it distorts the neighboring iodide positions from their centrosymmetric positions.},
  language  = {en}
}
@article{LarteyTsiwahAmponsahetal.2019,
  author    = {Lartey, Nathaniel and Tsiwah, Frank and Amponsah, Clement and Martinez-Ferreiro, Silvia and Bastiaanse, Roelien},
  title     = {Resumption in the production of focused constructions in Akan speakers with agrammatism},
  series = {Aphasiology},
  volume    = {34},
  journal   = {Aphasiology},
  number    = {3},
  publisher = {Routledge},
  address   = {London},
  doi       = {10.1080/02687038.2019.1686746},
  pages     = {343 -- 364},
  year      = {2019},
  abstract  = {Background: The distribution of pronouns varies cross-linguistically. This distribution has led to conflicting results in studies that investigated pronoun resolution in agrammatic indviduals. In the investigation of pronominal resolution, the linguistic phenomenon of "resumption" is understudied in agrammatism. The construction of pronominal resolution in Akan presents the opportunity to thoroughly examine resumption. Aims: To start, the present study examines the production of (pronominal) resumption in Akan focus constructions (who-questions and focused declaratives). Second, we explore the effect of grammatical tone on the processing of pronominal (resumption) since Akan is a tonal language. Methods \& Procedures: First, we tested the ability to distinguish linguistic and non-linguistic tone in Akan agrammatic speakers. Then, we administered an elicitation task to five Akan agrammatic individuals, controlling for the structural variations in the realization of resumption: focused who-questions and declaratives with (i) only a resumptive pronoun, (ii) only a clause determiner, (iii) a resumptive pronoun and a clause determiner co-occurring, and (iv) neither a resumptive pronoun nor a clause determiner. Outcomes \& Results: Tone discrimination .both for pitch and for lexical tone was unimpaired. The production task demonstrated that the production of resumptive pronouns and clause determiners was intact. However, the production of declarative sentences in derived word order was impaired; wh-object questions were relatively well-preserved. Conclusions: We argue that the problems with sentence production are highly selective: linguistic tones and resumption are intact but word order is impaired in non-canonical declarative sentences.},
  language  = {en}
}
@misc{LarteyTsiwahAmponsahetal.2019,
  author    = {Lartey, Nathaniel and Tsiwah, Frank and Amponsah, Clement and Martinez-Ferreiro, Silvia and Bastiaanse, Roelien},
  title     = {Resumption in the production of focused constructions in Akan speakers with agrammatism},
  series = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe},
  number    = {3},
  issn      = {1866-8364},
  doi       = {10.25932/publishup-52529},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-525296},
  pages     = {24},
  year      = {2019},
  abstract  = {Background: The distribution of pronouns varies cross-linguistically. This distribution has led to conflicting results in studies that investigated pronoun resolution in agrammatic indviduals. In the investigation of pronominal resolution, the linguistic phenomenon of "resumption" is understudied in agrammatism. The construction of pronominal resolution in Akan presents the opportunity to thoroughly examine resumption. Aims: To start, the present study examines the production of (pronominal) resumption in Akan focus constructions (who-questions and focused declaratives). Second, we explore the effect of grammatical tone on the processing of pronominal (resumption) since Akan is a tonal language. Methods \& Procedures: First, we tested the ability to distinguish linguistic and non-linguistic tone in Akan agrammatic speakers. Then, we administered an elicitation task to five Akan agrammatic individuals, controlling for the structural variations in the realization of resumption: focused who-questions and declaratives with (i) only a resumptive pronoun, (ii) only a clause determiner, (iii) a resumptive pronoun and a clause determiner co-occurring, and (iv) neither a resumptive pronoun nor a clause determiner. Outcomes \& Results: Tone discrimination .both for pitch and for lexical tone was unimpaired. The production task demonstrated that the production of resumptive pronouns and clause determiners was intact. However, the production of declarative sentences in derived word order was impaired; wh-object questions were relatively well-preserved. Conclusions: We argue that the problems with sentence production are highly selective: linguistic tones and resumption are intact but word order is impaired in non-canonical declarative sentences.},
  language  = {en}
}
@misc{KrueckemeierRauStolterfohtetal.2019,
  author    = {Kr{\"u}ckemeier, Lisa and Rau, Uwe and Stolterfoht, Martin and Kirchartz, Thomas},
  title     = {How to report record open-circuit voltages in lead-halide perovskite solar cells},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {1},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-52528},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-525289},
  pages     = {13},
  year      = {2019},
  abstract  = {Open-circuit voltages of lead-halide perovskite solar cells are improving rapidly and are approaching the thermodynamic limit. Since many different perovskite compositions with different bandgap energies are actively being investigated, it is not straightforward to compare the open-circuit voltages between these devices as long as a consistent method of referencing is missing. For the purpose of comparing open-circuit voltages and identifying outstanding values, it is imperative to use a unique, generally accepted way of calculating the thermodynamic limit, which is currently not the case. Here a meta-analysis of methods to determine the bandgap and a radiative limit for open-circuit voltage is presented. The differences between the methods are analyzed and an easily applicable approach based on the solar cell quantum efficiency as a general reference is proposed.},
  language  = {en}
}
@misc{SchoenemannKocAldredetal.2019,
  author    = {Sch{\"o}nemann, Eric and Koc, Julian and Aldred, Nick and Clare, Anthony S. and Laschewsky, Andr{\´e} and Rosenhahn, Axel and Wischerhoff, Erik},
  title     = {Synthesis of novel sulfobetaine polymers with differing dipole orientations in their side chains, and their effects on the antifouling properties},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {1},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-52482},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-524820},
  pages     = {9},
  year      = {2019},
  abstract  = {The impact of the orientation of zwitterionic groups, with respect to the polymer backbone, on the antifouling performance of thin hydrogel films made of polyzwitterions is explored. In an extension of the recent discussion about differences in the behavior of polymeric phosphatidylcholines and choline phosphates, a quasi-isomeric set of three poly(sulfobetaine methacrylate)s is designed for this purpose. The design is based on the established monomer 3-[N-2-(methacryloyloxy)ethyl-N,N-dimethyl]ammonio-propane-1-sulfonate and two novel sulfobetaine methacrylates, in which the positions of the cationic and the ionic groups relative to the polymerizable group, and thus also to the polymer backbone, are altered. The effect of the varied segmental dipole orientation on their water solubility, wetting behavior by water, and fouling resistance is compared. As model systems, the adsorption of the model proteins bovine serum albumin (BSA), fibrinogen, and lysozyme onto films of the various polyzwitterion surfaces is studied, as well as the settlement of a diatom (Navicula perminuta) and barnacle cyprids (Balanus improvisus) as representatives of typical marine fouling communities. The results demonstrate the important role of the zwitterionic group's orientation on the polymer behavior and fouling resistance},
  language  = {en}
}
@article{CaliendoGoethnerWeissenberger2019,
  author    = {Caliendo, Marco and Goethner, Maximilian and Weißenberger, Martin},
  title     = {Entrepreneurial persistence beyond survival: Measurement and determinants},
  series = {Journal of Small Business Management},
  volume    = {58},
  journal   = {Journal of Small Business Management},
  number    = {3},
  publisher = {Taylor \& Francis},
  address   = {London},
  pages     = {32},
  year      = {2019},
  abstract  = {Entrepreneurial persistence is demonstrated by an entrepreneur's continued positive maintenance of entrepreneurial motivation and constantly renewed active engagement in a new business venture despite counterforces or enticing alternatives. It thus is a crucial factor for entrepreneurs when pursuing and exploiting their business opportunities and in realizing potential economic gains and benefits. Using rich data on a representative sample of German business founders, we investigated the determinants of entrepreneurial persistence. Next to observed survival, we also constructed a hybrid persistence measure capturing the motivational dimension of persistence. We analyzed the influence of individual-level (human capital and personality) and business-related characteristics on both measures as well as their relative importance. We found that the two indicators emphasize different aspects of persistence. For the survival indicator, the predictive power was concentrated in business characteristics and human capital, while for hybrid persistence the dominant factors were business characteristics and personality. Finally, we showed that results were heterogeneous across subgroups. In particular, formerly unemployed founders did not differ in survival chances, but they were more likely to lack a high psychological commitment to their business ventures.},
  language  = {en}
}
@misc{CaliendoGoethnerWeissenberger2019,
  author    = {Caliendo, Marco and Goethner, Maximilian and Weißenberger, Martin},
  title     = {Entrepreneurial persistence beyond survival: Measurement and determinants},
  series = {Postprints der Universit{\"a}t Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe},
  number    = {3},
  issn      = {1867-5808},
  doi       = {10.25932/publishup-52481},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-524813},
  pages     = {34},
  year      = {2019},
  abstract  = {Entrepreneurial persistence is demonstrated by an entrepreneur's continued positive maintenance of entrepreneurial motivation and constantly renewed active engagement in a new business venture despite counterforces or enticing alternatives. It thus is a crucial factor for entrepreneurs when pursuing and exploiting their business opportunities and in realizing potential economic gains and benefits. Using rich data on a representative sample of German business founders, we investigated the determinants of entrepreneurial persistence. Next to observed survival, we also constructed a hybrid persistence measure capturing the motivational dimension of persistence. We analyzed the influence of individual-level (human capital and personality) and business-related characteristics on both measures as well as their relative importance. We found that the two indicators emphasize different aspects of persistence. For the survival indicator, the predictive power was concentrated in business characteristics and human capital, while for hybrid persistence the dominant factors were business characteristics and personality. Finally, we showed that results were heterogeneous across subgroups. In particular, formerly unemployed founders did not differ in survival chances, but they were more likely to lack a high psychological commitment to their business ventures.},
  language  = {en}
}
@misc{Omel'chenko2019,
  author    = {Omel'chenko, Oleh},
  title     = {Travelling chimera states in systems of phase oscillators with asymmetric nonlocal coupling},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {2},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-51814},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-518141},
  pages     = {611 -- 642},
  year      = {2019},
  abstract  = {We study travelling chimera states in a ring of nonlocally coupled heterogeneous (with Lorentzian distribution of natural frequencies) phase oscillators. These states are coherence-incoherence patterns moving in the lateral direction because of the broken reflection symmetry of the coupling topology. To explain the results of direct numerical simulations we consider the continuum limit of the system. In this case travelling chimera states correspond to smooth travelling wave solutions of some integro-differential equation, called the Ott-Antonsen equation, which describes the long time coarse-grained dynamics of the oscillators. Using the Lyapunov-Schmidt reduction technique we suggest a numerical approach for the continuation of these travelling waves. Moreover, we perform their linear stability analysis and show that travelling chimera states can lose their stability via fold and Hopf bifurcations. Some of the Hopf bifurcations turn out to be supercritical resulting in the observation of modulated travelling chimera states.},
  language  = {en}
}
@phdthesis{Stroncik2019,
  author    = {Stroncik, Nicole A.},
  title     = {Volatiles as tracers for mantle processes and magma formation and evolution},
  pages     = {102},
  year      = {2019},
  abstract  = {The geochemical composition of oceanic basalts provides us with a window into the distribution of geochemical elements within the Earth's mantle in space and time. In conjunction with a throughout knowledge on how the different elements behave e.g. during melt formation and evolution or on their partition behaviour between e.g. minerals and melts this information has been transformed into various models on how oceanic crust is formed along plume influenced or normal mid-ocean ridge segments, how oceanic crust evolves in response to seawater, on subduction recycling of oceanic crust and so forth. The work presented in this habilitation was aimed at refining existing models, putting further constraints on some of the major open questions in this field of research while at the same time trying to increase our knowledge on the behaviour of noble gases as a tracer for melt formation and evolution processes. In the line of this work the author and her co-workers were able to answer one of the major questions concerning the formation of oceanic crust along plume-influenced ridges - in which physical state does the plume material enter the ridge? Based on submarine volcanic glass He, Ne and Ar data, the author and her co-workers have shown that the interaction of mantle plumes with mid-ocean ridges occurs in the physical form of melts. In addition, the author and her co-workers have also put further constraints on one of the major questions concerning the formation of oceanic crust along normal mid-ocean ridges - namely how is the mid-ocean ridge system effectively cooled to form the lower oceanic crust? Based on Ne and Ar data in combination with Cl/K ratios of basaltic glass from the Mid-Atlantic ridge and estimates of crystallisation pressures they have shown, that seawater penetration reaches lower crustal levels close to the Moho, indicating that hydrothermal circulation might be an effective cooling mechanism even for the deep parts of the oceanic crust. Considering subduction recycling, the heterogeneity of the Earth's mantle and mantle dynamic processes the key question is on which temporal and spatial scales is the Earth's mantle geochemically heterogeneous? In the line of this work the author along with her co-workers have shown based on Cl/K ratios in conjunction with the Sr, Nd, and Pb isotopes of the OIBs representing the type localities for the different mantle endmembers that the quantity of Cl recycled into the mantle via subduction is not uniform and that neither the HIMU nor the EM1 and EM2 mantle components can be considered as distinct mantle endmembers. In addition, we have shown, based on He, Ne and Ar isotope and trace-element data from the Foundation hotspot that the near ridge seamounts of the Foundation seamount chain formed by the Foundation hotspot erupt lavas with a trace-element signature clearly characteristic of oceanic gabbro which indicates the existence of recycled, virtually unchanged lower oceanic crust in the plume source. This is a clear sign of the inefficiency of the stirring mechanism existing at mantle depth. Similar features are seen in other near-axis hotspot magmas around the world. Based on He, Sr, Nd, Pb and O isotopes and trace elements in primitive mafic dykes from the Etendeka flood basalts, NW Namibia the author along with her co-workers have shown that deep, less degassed mantle material carried up by a mantle plume contributed significantly to the flood basalt magmatism. The Etendeka flood basalts are part of the South Atlantic LIP, which is associated with the breakup of Gondwana, the formation of the Paran{\´a}-Etendeka flood basalts and the Walvis Ridge - Tristan da Cunha hotspot track. Thus reinforcing the lately often-challenged concept of mantle plumes and the role of mantle plumes in the formation of large igneous provinces. Studying the behaviour of noble gases during melt formation and evolution the author along with her co-workers has shown that He can be considerable more susceptible to changes during melt formation and evolution resulting not only in a complete decoupling of He isotopes from e.g. Ne or Pb isotopes but also in a complete loss of the primary mantle isotope signal. They have also shown that this decoupling occurs mainly during the melt formation processes requiring He to be more compatible during mantle melting than Ne. In addition, the author along with her co workers were able to show that incorporation of atmospheric noble gases into igneous rocks is in general a two-step process: (1) magma contamination by assimilation of altered oceanic crust results in the entrainment of air-equilibrated seawater noble gases; (2) atmospheric noble gases are adsorbed onto grain surfaces during sample preparation. This implies, considering the ubiquitous presence of the contamination signal, that magma contamination by assimilation of a seawater-sourced component is an integral part of mid-ocean ridge basalt evolution.},
  language  = {en}
}
@article{BaeslerKoppPohletal.2019,
  author    = {Baesler, Jessica and Kopp, Johannes Florian and Pohl, Gabriele and Aschner, Michael and Haase, Hajo and Schwerdtle, Tanja and Bornhorst, Julia},
  title     = {Zn homeostasis in genetic models of Parkinson's disease in Caenorhabditis elegans},
  series = {Journal of Trace Elements in Medicine and Biology},
  volume    = {55},
  journal   = {Journal of Trace Elements in Medicine and Biology},
  publisher = {Elsevier},
  address   = {M{\"u}nchen},
  doi       = {10.1016/j.jtemb.2019.05.005},
  pages     = {44 -- 49},
  year      = {2019},
  abstract  = {While the underlying mechanisms of Parkinson's disease (PD) are still insufficiently studied, a complex interaction between genetic and environmental factors is emphasized. Nevertheless, the role of the essential trace element zinc (Zn) in this regard remains controversial. In this study we altered Zn balance within PD models of the versatile model organism Caenorhabditis elegans (C. elegans) in order to examine whether a genetic predisposition in selected genes with relevance for PD affects Zn homeostasis. Protein-bound and labile Zn species act in various areas, such as enzymatic catalysis, protein stabilization pathways and cell signaling. Therefore, total Zn and labile Zn were quantitatively determined in living nematodes as individual biomarkers of Zn uptake and bioavailability with inductively coupled plasma tandem mass spectrometry (ICP-MS/MS) or a multi-well method using the fluorescent probe ZinPyr-1. Young and middle-aged deletion mutants of catp-6 and pdr-1, which are orthologues of mammalian ATP13A2 (PARK9) and parkin (PARK2), showed altered Zn homeostasis following Zn exposure compared to wildtype worms. Furthermore, age-specific differences in Zn uptake were observed in wildtype worms for total as well as labile Zn species. These data emphasize the importance of differentiation between Zn species as meaningful biomarkers of Zn uptake as well as the need for further studies investigating the role of dysregulated Zn homeostasis in the etiology of PD.},
  language  = {en}
}
@article{KulkarniWorseckHennawi2019,
  author    = {Kulkarni, Girish and Worseck, Gabor and Hennawi, Joseph F.},
  title     = {Evolution of the AGN UV luminosity function from redshift 7.5},
  series = {Monthly notices of the Royal Astronomical Society},
  volume    = {488},
  journal   = {Monthly notices of the Royal Astronomical Society},
  number    = {1},
  publisher = {Oxford Univ. Press},
  address   = {Oxford},
  issn      = {0035-8711},
  doi       = {10.1093/mnras/stz1493},
  pages     = {1035 -- 1065},
  year      = {2019},
  abstract  = {Determinations of the ultraviolet (UV) luminosity function of active galactic nuclei (AGN) at high redshifts are important for constraining the AGN contribution to reionization and understanding the growth of supermassive black holes. Recent inferences of the luminosity function suffer from inconsistencies arising from inhomogeneous selection and analysis of data. We address this problem by constructing a sample of more than 80 000 colour-selected AGN from redshift z= 0 to 7.5 using multiple data sets homogenized to identical cosmologies, intrinsic AGN spectra, and magnitude systems. Using this sample, we derive the AGN UV luminosity function from redshift z= 0 to 7.5. The luminosity function has a double power-law form at all redshifts. The break magnitude M-* shows a steep brightening from M-* similar to -24 at z = 0.7 to M-* similar to -29 at z = 6. The faint-end slope beta significantly steepens from -1.9 at z < 2.2 to -2.4 at z similar or equal to 6. In spite of this steepening, the contribution of AGN to the hydrogen photoionization rate at z similar to 6 is subdominant (< 3 per cent), although it can be non-negligible (similar to 10 per cent) if these luminosity functions hold down to M-1450 = -18. Under reasonable assumptions, AGN can reionize He II by redshift z = 2.9. At low redshifts (z < 0.5), AGN can produce about half of the hydrogen photoionization rate inferred from the statistics of HI absorption lines in the intergalactic medium. Our analysis also reveals important systematic errors in the data, which need to be addressed and incorporated in the AGN selection function in future in order to improve our results. We make various fitting functions, codes, and data publicly available.},
  language  = {en}
}
@article{GongPikovskij2019,
  author    = {Gong, Chen Chris and Pikovskij, Arkadij},
  title     = {Low-dimensional dynamics for higher-order harmonic, globally coupled phase-oscillator ensembles},
  series = {Physical review : E, Statistical, nonlinear and soft matter physics},
  volume    = {100},
  journal   = {Physical review : E, Statistical, nonlinear and soft matter physics},
  number    = {6},
  publisher = {American Physical Society},
  address   = {College Park},
  issn      = {2470-0045},
  doi       = {10.1103/PhysRevE.100.062210},
  pages     = {10},
  year      = {2019},
  abstract  = {The Kuramoto model, despite its popularity as a mean-field theory for many synchronization phenomenon of oscillatory systems, is limited to a first-order harmonic coupling of phases. For higher-order coupling, there only exists a low-dimensional theory in the thermodynamic limit. In this paper, we extend the formulation used by Watanabe and Strogatz to obtain a low-dimensional description of a system of arbitrary size of identical oscillators coupled all-to-all via their higher-order modes. To demonstrate an application of the formulation, we use a second harmonic globally coupled model, with a mean-field equal to the square of the Kuramoto mean-field. This model is known to exhibit asymmetrical clustering in previous numerical studies. We try to explain the phenomenon of asymmetrical clustering using the analytical theory developed here, as well as discuss certain phenomena not observed at the level of first-order harmonic coupling.},
  language  = {en}
}
@article{ShenDierckeDenker2019,
  author    = {Shen, Z. and Diercke, Andrea and Denker, Carsten},
  title     = {Calibration of full-disk He i 10 830 angstrom filtergrams of the Chromospheric Telescope},
  series = {Astronomische Nachrichten = Astronomical notes},
  volume    = {339},
  journal   = {Astronomische Nachrichten = Astronomical notes},
  number    = {9-10},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {0004-6337},
  doi       = {10.1002/asna.201813536},
  pages     = {661 -- 671},
  year      = {2019},
  abstract  = {The Chromospheric Telescope (ChroTel) is a small 10-cm robotic telescope at Observatorio del Teide on Tenerife (Spain), which observes the entire sun in Hα, Ca ii K, and He i 10 830 {\AA}. We present a new calibration method that includes limb-darkening correction, removal of nonuniform filter transmission, and determination of He i Doppler velocities. Chromospheric full-disk filtergrams are often obtained with Lyot filters, which may display nonuniform transmission causing large-scale intensity variations across the solar disk. Removal of a 2D symmetric limb-darkening function from full-disk images results in a flat background. However, transmission artifacts remain and are even more distinct in these contrast-enhanced images. Zernike polynomials are uniquely appropriate to fit these large-scale intensity variations of the background. The Zernike coefficients show a distinct temporal evolution for ChroTel data, which is likely related to the telescope's alt-azimuth mount that introduces image rotation. In addition, applying this calibration to sets of seven filtergrams that cover the He i triplet facilitates the determination of chromospheric Doppler velocities. To validate the method, we use three datasets with varying levels of solar activity. The Doppler velocities are benchmarked with respect to cotemporal high-resolution spectroscopic data of the GREGOR Infrared Spectrograph (GRIS). Furthermore, this technique can be applied to ChroTel Hα and Ca ii K data. The calibration method for ChroTel filtergrams can be easily adapted to other full-disk data exhibiting unwanted large-scale variations. The spectral region of the He i triplet is a primary choice for high-resolution near-infrared spectropolarimetry. Here, the improved calibration of ChroTel data will provide valuable context data.},
  language  = {en}
}
@misc{ZarriessSchlangen2019,
  author    = {Zarriess, Sina and Schlangen, David},
  title     = {Objects of Unknown Categories},
  series = {The 57th Annual Meeting of the Association for Computational Linguistics},
  journal   = {The 57th Annual Meeting of the Association for Computational Linguistics},
  publisher = {Association for Computational Linguistics},
  address   = {Stroudsburg},
  isbn      = {978-1-950737-48-2},
  pages     = {654 -- 659},
  year      = {2019},
  abstract  = {Zero-shot learning in Language \& Vision is the task of correctly labelling (or naming) objects of novel categories. Another strand of work in L\&V aims at pragmatically informative rather than "correct" object descriptions, e.g. in reference games. We combine these lines of research and model zero-shot reference games, where a speaker needs to successfully refer to a novel object in an image. Inspired by models of "rational speech acts", we extend a neural generator to become a pragmatic speaker reasoning about uncertain object categories. As a result of this reasoning, the generator produces fewer nouns and names of distractor categories as compared to a literal speaker. We show that this conversational strategy for dealing with novel objects often improves communicative success, in terms of resolution accuracy of an automatic listener.},
  language  = {en}
}
@misc{FinchBrakerReindletal.2019,
  author    = {Finch, Nicolle L. and Braker, I. P. and Reindl, Nicole and Barstow, Martin A. and Casewell, Sarah L. and Burleigh, M. and Kupfer, Thomas and Kilkenny, D. and Geier, Stephan and Schaffenroth, Veronika and Bertolami Miller, Marcelo Miguel and Taubenberger, Stefan and Freudenthal, Joseph},
  title     = {Spectral Analysis of Binary Pre-white Dwarf Systems},
  series = {Radiative signatures from the cosmos},
  volume    = {519},
  journal   = {Radiative signatures from the cosmos},
  publisher = {Astronomical soc pacific},
  address   = {San Fransisco},
  isbn      = {978-1-58381-925-8},
  issn      = {1050-3390},
  pages     = {231 -- 238},
  year      = {2019},
  abstract  = {Short period double degenerate white dwarf (WD) binaries with periods of less than similar to 1 day are considered to be one of the likely progenitors of type Ia supernovae. These binaries have undergone a period of common envelope evolution. If the core ignites helium before the envelope is ejected, then a hot subdwarf remains prior to contracting into a WD. Here we present a comparison of two very rare systems that contain two hot subdwarfs in short period orbits. We provide a quantitative spectroscopic analysis of the systems using synthetic spectra from state-of-the-art non-LTE models to constrain the atmospheric parameters of the stars. We also use these models to determine the radial velocities, and thus calculate dynamical masses for the stars in each system.},
  language  = {en}
}
@misc{KubatovaHamannKubatetal.2019,
  author    = {Kubatova, Brankica and Hamann, Wolf-Rainer and Kubat, Jiri and Oskinova, Lida},
  title     = {3D Monte Carlo Radiative Transfer in Inhomogeneous Massive Star Winds},
  series = {Radiative signatures from the cosmos},
  volume    = {519},
  journal   = {Radiative signatures from the cosmos},
  publisher = {Astronomical soc pacific},
  address   = {San Fransisco},
  isbn      = {978-1-58381-925-8},
  issn      = {1050-3390},
  pages     = {209 -- 212},
  year      = {2019},
  abstract  = {Already for decades it has been known that the winds of massive stars are inhomogeneous (i.e. clumped). To properly model observed spectra of massive star winds it is necessary to incorporate the 3-D nature of clumping into radiative transfer calculations. In this paper we present our full 3-D Monte Carlo radiative transfer code for inhomogeneous expanding stellar winds. We use a set of parameters to describe dense as well as the rarefied wind components. At the same time, we account for non-monotonic velocity fields. We show how the 3-D density and velocity wind inhomogeneities strongly affect the resonance line formation. We also show how wind clumping can solve the discrepancy between P v and H alpha mass-loss rate diagnostics.},
  language  = {en}
}
@misc{DolezalovaKubatovaKubatetal.2019,
  author    = {Dolezalova, Barbora and Kubatova, Brankica and Kubat, Jiri and Hamann, Wolf-Rainer},
  title     = {The Quasi-WR Star HD 45166 Revisited},
  series = {Radiative signatures from the cosmos},
  volume    = {519},
  journal   = {Radiative signatures from the cosmos},
  publisher = {Astronomical soc pacific},
  address   = {San Fransisco},
  isbn      = {978-1-58381-925-8},
  issn      = {1050-3390},
  pages     = {197 -- 200},
  year      = {2019},
  abstract  = {We studied the wind of the quasi Wolf-Rayet (qWR) star HD 45166. As a first step we modeled the observed UV spectra of this star by means of the state-of-the-art Potsdam Wolf-Rayet (PoWR) atmosphere code. We inferred the wind parameters and compared them with previous findings.},
  language  = {en}
}
@misc{StaubitzMeinel2019,
  author    = {Staubitz, Thomas and Meinel, Christoph},
  title     = {Graded Team Assignments in MOOCs},
  series = {SCALE},
  journal   = {SCALE},
  publisher = {Association for Computing Machinery},
  address   = {New York},
  isbn      = {978-1-4503-6804-9},
  doi       = {10.1145/3330430.3333619},
  pages     = {10},
  year      = {2019},
  abstract  = {The ability to work in teams is an important skill in today's work environments. In MOOCs, however, team work, team tasks, and graded team-based assignments play only a marginal role. To close this gap, we have been exploring ways to integrate graded team-based assignments in MOOCs. Some goals of our work are to determine simple criteria to match teams in a volatile environment and to enable a frictionless online collaboration for the participants within our MOOC platform. The high dropout rates in MOOCs pose particular challenges for team work in this context. By now, we have conducted 15 MOOCs containing graded team-based assignments in a variety of topics. The paper at hand presents a study that aims to establish a solid understanding of the participants in the team tasks. Furthermore, we attempt to determine which team compositions are particularly successful. Finally, we examine how several modifications to our platform's collaborative toolset have affected the dropout rates and performance of the teams.},
  language  = {en}
}
@misc{BockMatysikKrentzetal.2019,
  author    = {Bock, Benedikt and Matysik, Jan-Tobias and Krentz, Konrad-Felix and Meinel, Christoph},
  title     = {Link Layer Key Revocation and Rekeying for the Adaptive Key Establishment Scheme},
  series = {2019 IEEE 5TH World Forum on internet of things (WF-IOT)},
  journal   = {2019 IEEE 5TH World Forum on internet of things (WF-IOT)},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {978-1-5386-4980-0},
  doi       = {10.1109/WF-IoT.2019.8767211},
  pages     = {374 -- 379},
  year      = {2019},
  abstract  = {While the IEEE 802.15.4 radio standard has many features that meet the requirements of Internet of things applications, IEEE 802.15.4 leaves the whole issue of key management unstandardized. To address this gap, Krentz et al. proposed the Adaptive Key Establishment Scheme (AKES), which establishes session keys for use in IEEE 802.15.4 security. Yet, AKES does not cover all aspects of key management. In particular, AKES comprises no means for key revocation and rekeying. Moreover, existing protocols for key revocation and rekeying seem limited in various ways. In this paper, we hence propose a key revocation and rekeying protocol, which is designed to overcome various limitations of current protocols for key revocation and rekeying. For example, our protocol seems unique in that it routes around IEEE 802.15.4 nodes whose keys are being revoked. We successfully implemented and evaluated our protocol using the Contiki-NG operating system and aiocoap.},
  language  = {en}
}
@article{ParfentevaGrothScheffleretal.2019,
  author    = {Parfenteva, Olga and Groth, Detlef and Scheffler, Christiane and Zaharova, Maria F.},
  title     = {Influence of the A/T polymorphism of the FTO gene and sport specializations on the body composition of young Russian athletes},
  series = {Journal of biological and clinical anthropology : Anthropologischer Anzeiger ; Mitteilungsorgan der Gesellschaft f{\"u}r Anthropologie},
  volume    = {76},
  journal   = {Journal of biological and clinical anthropology : Anthropologischer Anzeiger ; Mitteilungsorgan der Gesellschaft f{\"u}r Anthropologie},
  number    = {5},
  publisher = {Schweizerbart},
  address   = {Stuttgart},
  issn      = {0003-5548},
  doi       = {10.1127/anthranz/2019/0943},
  pages     = {401 -- 408},
  year      = {2019},
  abstract  = {Background: The polymorphism in FTO gene (rs9939609) is known to be associated with higher BMI and body fat mass content. However, environmental factors can modify this effect. The purpose of the present study was to investigate an association between sport specialization and the rs9939609 SNP in FTO gene in the cohort of professional and amateur young athletes. Methods: A total number of 250 young individuals 8-18 years old living in Moscow or Moscow district participated in the study. Individuals were divided into 3 groups in accordance with their physical activity level: control group (n = 49), amateurs (n = 67) and professionals (n = 137). Amateur and professional athletes were subdivided into groups according to their sport specialization. Quantile regression was used as a regression model, where the dependent (outcome) variable was BMI, along with percentage of body fat mass, and the independent variables (predictors) were the rs9939609 SNP in FTO gene, physical activity (active versus inactive), sport specialization (aerobic, intermittent sports and martial arts), nationality, level of sport experience (in years), gender and percentage of free fat mass content. Results: The regression analysis revealed that physical activity and sport specialization had greater impact compared to FTO allele in the group of physically active individuals. Physical activity, in particular aerobic, had negative associations with body fat mass and BMI. The rs9939609 SNP in FTO gene is associated with physical activity and aerobic activity. The magnitude of association becomes significantly larger at the upper quantiles of the body fat mass distribution. Conclusion: Physical activity and sport specialization explained more variance in body composition of physically active young individuals compared to the FTO polymorphism. Effect of interaction of physical activity, in particular aerobic, with the FTO polymorphism on body composition of young athletes was found.},
  language  = {en}
}
@article{Montemayor2019,
  author    = {Montemayor, Carlos},
  title     = {On the human uniqueness of the temporal reasoning system},
  series = {Behavioral and brain sciences : an international journal of current research and theory with open peer commentary},
  volume    = {42},
  journal   = {Behavioral and brain sciences : an international journal of current research and theory with open peer commentary},
  publisher = {Cambridge Univ. Press},
  address   = {New York},
  issn      = {0140-525X},
  doi       = {10.1017/S0140525X19000335},
  pages     = {69},
  year      = {2019},
  abstract  = {A central claim by Hoerl \& McCormack is that the temporal reasoning system is uniquely human. But why exactly? This commentary evaluates two possible options to justify the thesis that temporal reasoning is uniquely human, one based on considerations regarding agency and the other based on language. The commentary raises problems for both of these options.},
  language  = {en}
}
@article{LopezdeGuerenuBastianWessigetal.2019,
  author    = {L{\´o}pez de Guere{\~n}u, Anna and Bastian, Philipp and Wessig, Pablo and John, Leonard and Kumke, Michael Uwe},
  title     = {Energy Transfer between Tm-Doped Upconverting Nanoparticles and a Small Organic Dye with Large Stokes Shift},
  series = {Biosensors : open access journal},
  volume    = {9},
  journal   = {Biosensors : open access journal},
  number    = {1},
  publisher = {MDPI},
  address   = {Basel},
  issn      = {2079-6374},
  doi       = {10.3390/bios9010009},
  pages     = {17},
  year      = {2019},
  abstract  = {Lanthanide-doped upconverting nanoparticles (UCNP) are being extensively studied for bioapplications due to their unique photoluminescence properties and low toxicity. Interest in RET applications involving UCNP is also increasing, but due to factors such as large sizes, ion emission distributions within the particles, and complicated energy transfer processes within the UCNP, there are still many questions to be answered. In this study, four types of core and core-shell NaYF4-based UCNP co-doped with Yb3+ and Tm3+ as sensitizer and activator, respectively, were investigated as donors for the Methyl 5-(8-decanoylbenzo[1,2-d:4,5-d ']bis([1,3]dioxole)-4-yl)-5-oxopentanoate (DBD-6) dye. The possibility of resonance energy transfer (RET) between UCNP and the DBD-6 attached to their surface was demonstrated based on the comparison of luminescence intensities, band ratios, and decay kinetics. The architecture of UCNP influenced both the luminescence properties and the energy transfer to the dye: UCNP with an inert shell were the brightest, but their RET efficiency was the lowest (17\%). Nanoparticles with Tm3+ only in the shell have revealed the highest RET efficiencies (up to 51\%) despite the compromised luminescence due to surface quenching.},
  language  = {en}
}
@article{UnuabonahNoeskeWeberetal.2019,
  author    = {Unuabonah, Emmanuel Iyayi and N{\"o}ske, Robert and Weber, Jens and G{\"u}nter, Christina and Taubert, Andreas},
  title     = {New micro/mesoporous nanocomposite material from low-cost sources for the efficient removal of aromatic and pathogenic pollutants from water},
  series = {Beilstein journal of nanotechnology},
  volume    = {10},
  journal   = {Beilstein journal of nanotechnology},
  publisher = {Beilstein-Institut zur F{\"o}rderung der Chemischen Wissenschaften},
  address   = {Frankfurt, Main},
  issn      = {2190-4286},
  doi       = {10.3762/bjnano.10.11},
  pages     = {119 -- 131},
  year      = {2019},
  abstract  = {A new micro/mesoporous hybrid clay nanocomposite prepared from kaolinite clay, Carica papaya seeds, and ZnCl2 via calcination in an inert atmosphere is presented. Regardless of the synthesis temperature, the specific surface area of the nanocomposite material is between approximate to 150 and 300 m(2)/g. The material contains both micro- and mesopores in roughly equal amounts. X-ray diffraction, infrared spectroscopy, and solid-state nuclear magnetic resonance spectroscopy suggest the formation of several new bonds in the materials upon reaction of the precursors, thus confirming the formation of a new hybrid material. Thermogravimetric analysis/differential thermal analysis and elemental analysis confirm the presence of carbonaceous matter. The new composite is stable up to 900 degrees C and is an efficient adsorbent for the removal of a water micropollutant, 4-nitrophenol, and a pathogen, E. coli, from an aqueous medium, suggesting applications in water remediation are feasible.},
  language  = {en}
}
@article{WickertSchildgen2019,
  author    = {Wickert, Andrew D. and Schildgen, Taylor F.},
  title     = {Long-profile evolution of transport-limited gravel-bed rivers},
  series = {Earth surface dynamics},
  volume    = {7},
  journal   = {Earth surface dynamics},
  number    = {1},
  publisher = {Copernicus},
  address   = {G{\"o}ttingen},
  issn      = {2196-6311},
  doi       = {10.5194/esurf-7-17-2019},
  pages     = {17 -- 43},
  year      = {2019},
  abstract  = {Alluvial and transport-limited bedrock rivers constitute the majority of fluvial systems on Earth. Their long profiles hold clues to their present state and past evolution. We currently possess first-principles-based governing equations for flow, sediment transport, and channel morphodynamics in these systems, which we lack for detachment-limited bedrock rivers. Here we formally couple these equations for transport-limited gravel-bed river long-profile evolution. The result is a new predictive relationship whose functional form and parameters are grounded in theory and defined through experimental data. From this, we produce a power-law analytical solution and a finite-difference numerical solution to long-profile evolution. Steady-state channel concavity and steepness are diagnostic of external drivers: concavity decreases with increasing uplift rate, and steepness increases with an increasing sediment-to-water supply ratio. Constraining free parameters explains common observations of river form: to match observed channel concavities, gravel-sized sediments must weather and fine - typically rapidly - and valleys typically should widen gradually. To match the empirical square-root width-discharge scaling in equilibrium-width gravel-bed rivers, downstream fining must occur. The ability to assign a cause to such observations is the direct result of a deductive approach to developing equations for landscape evolution.},
  language  = {en}
}
@article{PerkinsPernaAdrianetal.2019,
  author    = {Perkins, Daniel M. and Perna, Andrea and Adrian, Rita and Cermeno, Pedro and Gaedke, Ursula and Huete-Ortega, Maria and White, Ethan P. and Yvon-Durocher, Gabriel},
  title     = {Energetic equivalence underpins the size structure of tree and phytoplankton communities},
  series = {Nature Communications},
  volume    = {10},
  journal   = {Nature Communications},
  publisher = {Nature Publ. Group},
  address   = {London},
  issn      = {2041-1723},
  doi       = {10.1038/s41467-018-08039-3},
  pages     = {8},
  year      = {2019},
  abstract  = {The size structure of autotroph communities - the relative abundance of small vs. large individuals - shapes the functioning of ecosystems. Whether common mechanisms underpin the size structure of unicellular and multicellular autotrophs is, however, unknown. Using a global data compilation, we show that individual body masses in tree and phytoplankton communities follow power-law distributions and that the average exponents of these individual size distributions (ISD) differ. Phytoplankton communities are characterized by an average ISD exponent consistent with three-quarter-power scaling of metabolism with body mass and equivalence in energy use among mass classes. Tree communities deviate from this pattern in a manner consistent with equivalence in energy use among diameter size classes. Our findings suggest that whilst universal metabolic constraints ultimately underlie the emergent size structure of autotroph communities, divergent aspects of body size (volumetric vs. linear dimensions) shape the ecological outcome of metabolic scaling in forest vs. pelagic ecosystems.},
  language  = {en}
}
@misc{FischerShaki2019,
  author    = {Fischer, Martin H. and Shaki, Samuel},
  title     = {How to make talks less boring},
  series = {Nature : the international weekly journal of science},
  volume    = {565},
  journal   = {Nature : the international weekly journal of science},
  number    = {7739},
  publisher = {Nature Publ. Group},
  address   = {London},
  issn      = {0028-0836},
  doi       = {10.1038/d41586-019-00153-6},
  pages     = {294 -- 294},
  year      = {2019},
  language  = {en}
}
@misc{NitzeGrosseJonesetal.2019,
  author    = {Nitze, Ingmar and Grosse, Guido and Jones, B. M. and Romanovsky, Vladimir E. and Boike, Julia},
  title     = {Author Correction: Nitze, I; Grosse, G; Jones, B.M.; Romanovsky, V.E.; Boike, J.: Remote sensing quantifies widespread abundance of permafrost region disturbances across the Arctic and Subarctic. - Nature Communications. - 9 (2018), 5423},
  series = {Nature Communications},
  volume    = {10},
  journal   = {Nature Communications},
  publisher = {Nature Publ. Group},
  address   = {London},
  issn      = {2041-1723},
  doi       = {10.1038/s41467-019-08375-y},
  pages     = {1},
  year      = {2019},
  language  = {en}
}