TY - CHAP A1 - Mackert, Jürgen T1 - Why we need a new political economy of citizenship: neo-liberalism, the bank crisis and the 'Panama Papers' T2 - The Transformation of Citizenship : Political Economy Y1 - 2017 SN - 978-1-138-67290-1 (print) SN - 978-1-315-56228-5 (online) IS - 1 SP - 99 EP - 117 PB - Routledge Taylor CY - London ER - TY - JOUR A1 - Krasnova, Hanna A1 - Veltri, Natasha F. A1 - Eling, Nicole A1 - Buxmann, Peter T1 - Why men and women continue to use social networking sites BT - the role of gender differences JF - The journal of strategic information systems : incorporating International Information Systems N2 - Organizations increasingly use social media and especially social networking sites (SNS) to support their marketing agenda, enhance collaboration, and develop new capabilities. However, the success of SNS initiatives is largely dependent on sustainable user participation. In this study, we argue that the continuance intentions of users may be gender sensitive. To theorize and investigate gender differences in the determinants of continuance intentions, this study draws on the expectation-confirmation model, the uses and gratification theory, as well as the self-construal theory and its extensions. Our survey of 488 users shows that while both men and women are motivated by the ability to self enhance, there are some gender differences. Specifically, while women are mainly driven by relational uses, such as maintaining close ties and getting access to social information on close and distant networks, men base their continuance intentions on their ability to gain information of a general nature. Our research makes several contributions to the discourse in strategic information systems literature concerning the use of social media by individuals and organizations. Theoretically, it expands the understanding of the phenomenon of continuance intentions and specifically the role of the gender differences in its determinants. On a practical level, it delivers insights for SNS providers and marketers into how satisfaction and continuance intentions of male and female SNS users can be differentially promoted. Furthermore, as organizations increasingly rely on corporate social networks to foster collaboration and innovation, our insights deliver initial recommendations on how organizational social media initiatives can be supported with regard to gender-based differences. KW - Gender KW - Social networking sites KW - Facebook KW - Continuance intention KW - Satisfaction KW - Uses and gratifications KW - Gendered self-construal KW - Relational interdependence KW - Collective interdependence Y1 - 2017 U6 - https://doi.org/10.1016/j.jsis.2017.01.004 SN - 0963-8687 SN - 1873-1198 VL - 26 SP - 261 EP - 284 PB - Elsevier CY - Amsterdam ER - TY - GEN A1 - Hocher, Berthold A1 - Yin, Lianghong T1 - Why Current PTH Assays Mislead Clinical Decision Making in Patients with Secondary Hyperparathyroidism T2 - Nephron N2 - Preclinical studies in cell culture systems as well as in whole animal chronic kidney disease (CKD) models showed that parathyroid hormone (PTH), oxidized at the 2 methionine residues (positions 8 and 18), caused a loss of function. This was so far not considered in the development of PTH assays used in current clinical practice. Patients with advanced CKD are subject to oxidative stress, and plasma proteins (including PTH) are targets for oxidants. In patients with CKD, a considerable but variable fraction (about 70 to 90%) of measured PTH appears to be oxidized. Oxidized PTH (oxPTH) does not interact with the PTH receptor resulting in loss of biological activity. Currently used intact PTH (iPTH) assays detect both oxidized and non-oxPTH (n-oxPTH). Clinical studies demonstrated that bioactive, n-oxPTH, but not iPTH nor oxPTH, is associated with mortality in CKD patients. KW - Serum intact-parathyroid hormone level KW - Dialysis patients KW - Mortality Y1 - 2017 U6 - https://doi.org/10.1159/000455289 SN - 1660-8151 SN - 2235-3186 SN - 0028-2766 VL - 136 IS - 2 SP - 137 EP - 142 PB - Karger CY - Basel ER - TY - JOUR A1 - Carus, Jana A1 - Heuner, Maike A1 - Paul, Maike A1 - Schröder, Boris T1 - Which factors and processes drive the spatio-temporal dynamics of brackish marshes?-Insights from development and parameterisation of a mechanistic vegetation model JF - Ecological modelling : international journal on ecological modelling and engineering and systems ecolog N2 - Tidal marsh vegetation offers important ecosystem services. However, in many estuaries, extensive embankments, artificial bank protection, river dredging and agriculture threaten tidal marshes. In this study we analysed the processes underlying the spatio-temporal patterns of tidal marsh vegetation in the Elbe estuary and quantified the influence of specific habitat factors by developing and applying the process-based dynamic habitat-macrophyte model HaMac in a pattern-oriented way. In order to develop and parameterise the model, we measured a wide range of biotic and abiotic parameters in two study sites in the Elbe estuary and compared observed and simulated patterns. The final model is able to reproduce the general patterns of vegetation zonation, development and growth and thus helps to understand the underlying processes. By considering the vegetative reproduction of marsh plants as well as abiotic influence factors and intraspecific competition, HaMac allowed to systematically analyse the significance of factors and processes for the dynamic of tidal marsh vegetation. Our results show that rhizome growth is the most important process and that flow velocity, inundation height and duration as well as intraspecific competition are the most important habitat factors for explaining spatio-temporal dynamics of brackish marshes. Future applications of HaMac could support the sustainable development and stabilisation of shore zones and thus contribute to the promotion and planning of ecosystem -based shoreline protection measures. (C) 2017 Elsevier B.V. All rights reserved. KW - Bolboschoenus maritimus KW - Emergent macrophytes KW - Pattern-oriented modelling KW - Phragmites australis KW - Tidal marsh vegetation KW - Vegetative reproduction Y1 - 2017 U6 - https://doi.org/10.1016/j.ecolmodel.2017.08.023 SN - 0304-3800 SN - 1872-7026 VL - 363 SP - 122 EP - 136 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Plue, Jan A1 - De Frenne, Pieter A1 - Acharya, Kamal A1 - Brunet, Jörg A1 - Chabrerie, Olivier A1 - Decocq, Guillaume A1 - Diekmann, Martin A1 - Graae, Bente J. A1 - Heinken, Thilo A1 - Hermy, Martin A1 - Kolb, Annette A1 - Lemke, Isgard A1 - Liira, Jaan A1 - Naaf, Tobias A1 - Verheyen, Kris A1 - Wulf, Monika A1 - Cousins, Sara A. O. T1 - Where does the community start, and where does it end? BT - including the seed bank to reassess forest herb layer responses to the environment JF - Journal of vegetation science N2 - QuestionBelow-ground processes are key determinants of above-ground plant population and community dynamics. Still, our understanding of how environmental drivers shape plant communities is mostly based on above-ground diversity patterns, bypassing below-ground plant diversity stored in seed banks. As seed banks may shape above-ground plant communities, we question whether concurrently analysing the above- and below-ground species assemblages may potentially enhance our understanding of community responses to environmental variation. LocationTemperate deciduous forests along a 2000km latitudinal gradient in NW Europe. MethodsHerb layer, seed bank and local environmental data including soil pH, canopy cover, forest cover continuity and time since last canopy disturbance were collected in 129 temperate deciduous forest plots. We quantified herb layer and seed bank diversity per plot and evaluated how environmental variation structured community diversity in the herb layer, seed bank and the combined herb layer-seed bank community. ResultsSeed banks consistently held more plant species than the herb layer. How local plot diversity was partitioned across the herb layer and seed bank was mediated by environmental variation in drivers serving as proxies of light availability. The herb layer and seed bank contained an ever smaller and ever larger share of local diversity, respectively, as both canopy cover and time since last canopy disturbance decreased. Species richness and -diversity of the combined herb layer-seed bank community responded distinctly differently compared to the separate assemblages in response to environmental variation in, e.g. forest cover continuity and canopy cover. ConclusionsThe seed bank is a below-ground diversity reservoir of the herbaceous forest community, which interacts with the herb layer, although constrained by environmental variation in e.g. light availability. The herb layer and seed bank co-exist as a single community by means of the so-called storage effect, resulting in distinct responses to environmental variation not necessarily recorded in the individual herb layer or seed bank assemblages. Thus, concurrently analysing above- and below-ground diversity will improve our ecological understanding of how understorey plant communities respond to environmental variation. KW - Above-ground KW - Below-ground KW - Canopy KW - Disturbance KW - Diversity KW - Light availability KW - NWEurope KW - Plant community KW - Species co-existence KW - Storage effect Y1 - 2017 U6 - https://doi.org/10.1111/jvs.12493 SN - 1100-9233 SN - 1654-1103 VL - 28 IS - 2 SP - 424 EP - 435 PB - Wiley CY - Hoboken ER - TY - JOUR A1 - Schotter, Elizabeth Roye A1 - Leinenger, Mallorie A1 - von der Malsburg, Titus Raban T1 - When your mind skips what your eyes fixate BT - how forced fixations lead to comprehension illusions in reading JF - Psychonomic bulletin & review : a journal of the Psychonomic Society N2 - The phenomenon of forced fixations suggests that readers sometimes fixate a word (due to oculomotor constraints) even though they intended to skip it (due to parafoveal cognitive-linguistic processing). We investigate whether this leads readers to look directly at a word but not pay attention to it. We used a gaze-contingent boundary paradigm to dissociate parafoveal and foveal information (e.g., the word phone changed to scarf once the reader's eyes moved to it) and asked questions about the sentence to determine which one the reader encoded. When the word was skipped or fixated only briefly (i.e., up to 100 ms) readers were more likely to report reading the parafoveal than the fixated word, suggesting that there are cases in which readers look directly at a word but their minds ignore it, leading to the illusion of reading something they did not fixate. KW - Word recognition KW - Text comprehension KW - Eye movements and reading Y1 - 2017 U6 - https://doi.org/10.3758/s13423-017-1356-y SN - 1069-9384 SN - 1531-5320 VL - 25 IS - 5 SP - 1884 EP - 1890 PB - Springer CY - New York ER - TY - JOUR A1 - Vormoor, Klaus Josef A1 - Rossler, Ole A1 - Bürger, Gerd A1 - Bronstert, Axel A1 - Weingartner, Rolf T1 - When timing matters-considering changing temporal structures in runoff response surfaces JF - Climatic change : an interdisciplinary, intern. journal devoted to the description, causes and implications of climatic change N2 - Scenario-neutral response surfaces illustrate the sensitivity of a simulated natural system, represented by a specific impact variable, to systematic perturbations of climatic parameters. This type of approach has recently been developed as an alternative to top-down approaches for the assessment of climate change impacts. A major limitation of this approach is the underrepresentation of changes in the temporal structure of the climate input data (i.e., the seasonal and day-to-day variability) since this is not altered by the perturbation. This paper presents a framework that aims to examine this limitation by perturbing both observed and projected climate data time series for a future period, which both serve as input into a hydrological model (the HBV model). The resulting multiple response surfaces are compared at a common domain, the standardized runoff response surface (SRRS). We apply this approach in a case study catchment in Norway to (i) analyze possible changes in mean and extreme runoff and (ii) quantify the influence of changes in the temporal structure represented by 17 different climate input sets using linear mixed-effect models. Results suggest that climate change induced increases in mean and peak flow runoff and only small changes in low flow. They further suggest that the effect of the different temporal structures of the climate input data considerably affects low flows and floods (at least 21% influence), while it is negligible for mean runoff. Y1 - 2017 U6 - https://doi.org/10.1007/s10584-017-1940-1 SN - 0165-0009 SN - 1573-1480 VL - 142 SP - 213 EP - 226 PB - Springer CY - Dordrecht ER - TY - JOUR A1 - Endrejat, Paul C. A1 - Baumgarten, Franz A1 - Kauffeld, Simone T1 - When theory meets practice BT - Combining Lewin’s Ideas about Change with Motivational Interviewing to Increase Energy-Saving Behaviours Within Organizations JF - Journal of Change Management N2 - Although more than seven decades have passed since Lewin laid the foundation for how employees’ behaviour could be changed within organizations, his ideas are far from being obsolescent. Accordingly, this article demonstrates how Lewin’s concepts can still be of use in tackling current issues (i.e. the need to raise energy-saving behaviours within organizations). In order to revive Lewin’s concepts, we combine his approaches on organization change with Motivational Interviewing (MI), a facilitation approach that fits well with his democratic and participatory mind-set. After a theoretical consideration of how Lewin’s ideas could be accompanied by MI principles, we outline a practical concept for raising the level of employees’ energy-saving behaviours to a higher standard. The usefulness of our concept is highlighted on the basis of qualitative (a force field analysis) and quantitative (an increase of energy-saving norms and – behaviours) data. Lewin’s legacy for current organization development, and the theoretical as well as practical implications for how his ideas could be applied through a combination with MI practices, are discussed. KW - Kurt Lewin KW - field theory KW - group dynamics KW - motivational interviewing KW - energy-saving KW - organization development Y1 - 2017 U6 - https://doi.org/10.1080/14697017.2017.1299372 SN - 1469-7017 SN - 1479-1811 VL - 17 IS - 2 SP - 101 EP - 120 PB - Routledge, Taylor & Francis Group CY - Abingdon ER - TY - JOUR A1 - Balzer, Julia A1 - Ebert, Susanne A1 - Frank, Ulrike T1 - When life gives you lemons... Der Einfluss visueller Stimuli auf Schluckfrequenz und Speichelproduktion JF - Spektrum Patholinguistik (Band 10) - Schwerpunktthema: Panorama Patholinguistik: Sprachwissenschaft trifft Sprachtherapie Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-405204 SN - 1866-9085 IS - 10 SP - 131 EP - 140 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - JOUR A1 - Sebold, Miriam A1 - Nebe, Stephan A1 - Garbusow, Maria A1 - Guggenmos, Matthias A1 - Schad, Daniel A1 - Beck, Anne A1 - Kuitunen-Paul, Sören A1 - Sommer, Christian A1 - Frank, Robin A1 - Neu, Peter A1 - Zimmermann, Ulrich S. A1 - Rapp, Michael A. A1 - Smolka, Michael N. A1 - Huys, Quentin J. M. A1 - Schlagenhauf, Florian A1 - Heinz, Andreas T1 - When Habits Are Dangerous: Alcohol Expectancies and Habitual Decision Making Predict Relapse in Alcohol Dependence JF - Biological psychiatry : a journal of psychiatric neuroscience and therapeutics ; a publication of the Society of Biological Psychiatry N2 - BACKGROUND: Addiction is supposedly characterized by a shift from goal-directed to habitual decision making, thus facilitating automatic drug intake. The two-step task allows distinguishing between these mechanisms by computationally modeling goal-directed and habitual behavior as model-based and model-free control. In addicted patients, decision making may also strongly depend upon drug-associated expectations. Therefore, we investigated model-based versus model-free decision making and its neural correlates as well as alcohol expectancies in alcohol-dependent patients and healthy controls and assessed treatment outcome in patients. METHODS: Ninety detoxified, medication-free, alcohol-dependent patients and 96 age-and gender-matched control subjects underwent functional magnetic resonance imaging during the two-step task. Alcohol expectancies were measured with the Alcohol Expectancy Questionnaire. Over a follow-up period of 48 weeks, 37 patients remained abstinent and 53 patients relapsed as indicated by the Alcohol Timeline Followback method. RESULTS: Patients who relapsed displayed reduced medial prefrontal cortex activation during model-based decision making. Furthermore, high alcohol expectancies were associated with low model-based control in relapsers, while the opposite was observed in abstainers and healthy control subjects. However, reduced model-based control per se was not associated with subsequent relapse. CONCLUSIONS: These findings suggest that poor treatment outcome in alcohol dependence does not simply result from a shift from model-based to model-free control but is instead dependent on the interaction between high drug expectancies and low model-based decision making. Reduced model-based medial prefrontal cortex signatures in those who relapse point to a neural correlate of relapse risk. These observations suggest that therapeutic interventions should target subjective alcohol expectancies. KW - Alcohol dependence KW - Alcohol expectancy KW - Goal-directed control KW - Medial prefrontal cortex KW - Reinforcement learning KW - Treatment outcome Y1 - 2017 U6 - https://doi.org/10.1016/j.biopsych.2017.04.019 SN - 0006-3223 SN - 1873-2402 VL - 82 SP - 847 EP - 856 PB - Elsevier CY - New York ER - TY - JOUR A1 - Bubeck, Philip A1 - Thieken, Annegret T1 - What helps people recover from floods? BT - insights from a survey among flood-affected residents in German JF - Regional environmental change N2 - The number of people exposed to natural hazards has grown steadily over recent decades, mainly due to increasing exposure in hazard-prone areas. In the future, climate change could further enhance this trend. Still, empirical and comprehensive insights into individual recovery from natural hazards are largely lacking, hampering efforts to increase societal resilience. Drawing from a sample of 710 residents affected by flooding across Germany in June 2013, we empirically explore a wide range of variables possibly influencing self-reported recovery, including flood-event characteristics, the circumstances of the recovery process, socio-economic characteristics, and psychological factors, using multivariate statistics. We found that the amount of damage and other flood-event characteristics such as inundation depth are less important than socio-economic characteristics (e.g., sex or health status) and psychological factors (e.g., risk aversion and emotions). Our results indicate that uniform recovery efforts focusing on areas that were the most affected in terms of physical damage are insufficient to account for the heterogeneity in individual recovery results. To increase societal resilience, aid and recovery efforts should better address the long-term psychological effects of floods. KW - Floods KW - Resilience KW - Recovery KW - Natural hazards KW - Climate change KW - Adaptation Y1 - 2017 U6 - https://doi.org/10.1007/s10113-017-1200-y SN - 1436-3798 SN - 1436-378X VL - 18 IS - 1 SP - 287 EP - 296 PB - Springer CY - Heidelberg ER - TY - JOUR A1 - Nied, Manuela A1 - Schröter, Kai A1 - Lüdtke, Stefan A1 - Nguyen, Viet Dung A1 - Merz, Bruno T1 - What are the hydro-meteorological controls on flood characteristics? JF - Journal of hydrology N2 - Flood events can be expressed by a variety of characteristics such as flood magnitude and extent, event duration or incurred loss. Flood estimation and management may benefit from understanding how the different flood characteristics relate to the hydrological catchment conditions preceding the event and to the meteorological conditions throughout the event. In this study, we therefore propose a methodology to investigate the hydro-meteorological controls on different flood characteristics, based on the simulation of the complete flood risk chain from the flood triggering precipitation event, through runoff generation in the catchment, flood routing and possible inundation in the river system and floodplains to flood loss. Conditional cumulative distribution functions and regression tree analysis delineate the seasonal varying flood processes and indicate that the effect of the hydrological pre-conditions, i.e. soil moisture patterns, and of the meteorological conditions, i.e. weather patterns, depends on the considered flood characteristic. The methodology is exemplified for the Elbe catchment. In this catchment, the length of the build-up period, the event duration and the number of gauges undergoing at least a 10-year flood are governed by weather patterns. The affected length and the number of gauges undergoing at least a 2-year flood are however governed by soil moisture patterns. In case of flood severity and loss, the controlling factor is less pronounced. Severity is slightly governed by soil moisture patterns whereas loss is slightly governed by weather patterns. The study highlights that flood magnitude and extent arise from different flood generation processes and concludes that soil moisture patterns as well as weather patterns are not only beneficial to inform on possible flood occurrence but also on the involved flood processes and resulting flood characteristics. KW - Flood KW - Flood duration KW - Flood magnitude KW - Flood loss KW - Soil moisture patterns KW - Antecedent conditions KW - Weather patterns KW - Large basins Y1 - 2017 U6 - https://doi.org/10.1016/j.jhydrol.2016.12.003 SN - 0022-1694 SN - 1879-2707 VL - 545 SP - 310 EP - 326 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Bagi, Zoltán Péter T1 - Westeuropäische Reitertruppen auf ungarischen Kriegsschauplätzen BT - Truppengattungen, Organisation und Rekrutierung in der Zeit des langen Türkenkriegs JF - Militär und Gesellschaft in der frühen Neuzeit Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-396953 VL - 19 SP - 47 EP - 70 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - JOUR A1 - Denz, Rebekka A1 - Rudolf, Gabi ED - Denz, Rebekka ED - Rudolf, Gabi T1 - Werkstattbericht: Genisot in Franken JF - Genisa-Blätter II KW - Genisa KW - Jüdische Studien KW - Geniza KW - Jewish Studies Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-104464 SP - 7 EP - 14 ER - TY - JOUR A1 - Ette, Ottmar T1 - Welterleben/Weiterleben BT - On Vectopia in Georg Forster, Alexander von Humboldt, and Adelbert von Chamisso JF - Daphnis : Zeitschrift für mittlere deutsche Literatur N2 - Welterleben and Weiterleben are what determine the second globalization (of four previously explored) whose constantly accelerating dynamic, vectorization, this essay explores. On the basis of selected writings of Georg Forster, Alexander von Humboldt, and Adelbert von Chamisso, the author highlights the increasing speed with which knowledge, especially in the experiential sciences, is produced and disseminated following the routes of ever-widening trade speeded along by globalization. The notion of ‘vectopia’ stands for the connection of utopia and uchronia in space and time in such a way that the experience of the world, expanded worldwide, contains within it a Weiter-Leben, a ‘living-further’ that is to be understood first in a spatial, and not yet temporal, sense, of what Forster called Erfahrungswissen, or ‘experiential knowledge.’ Vectopia, as elaborated here, has a material dimension that relates to the physical person, the body, the experience of the world that cannot occur without the constant changing of place, without a journeying that is again and again recommenced. Vectopia develops the projection of a life not from space or from time alone, but by their combination. Vectopia is more than a concept, it is a thought-figure: it is vitally connected to life, and thus a life-figure. It opens itself to a type of knowledge that stands almost at the threshold of a further life, indeed, of a Weiterleben that, opening itself to a ‘living-onward,’ resides beyond space, time, and movement. KW - travel literature KW - transdisciplinary KW - accelerated globalization KW - experiential knowledge KW - Weiter-Leben Y1 - 2017 U6 - https://doi.org/10.1163/18796583-04503002 SN - 0300-693X SN - 1879-6583 VL - 45 IS - 3-4 SP - 343 EP - 388 PB - Editions Rodopi BV CY - Amsterdam ER - TY - CHAP A1 - Niproschke, Saskia A1 - Bilz, Ludwig A1 - Dudziak, Ines ED - Bilz, Ludwig ED - Schubarth, Wilfried ED - Dudziak, Ines ED - Fischer, Saskia M. ED - Niproschke, Saskia ED - Ulbricht, Juliane T1 - Welche Kontextfaktoren sind für das Lehrerhandeln bei Mobbing von Bedeutung? T2 - Gewalt und Mobbing an Schulen : wie sich Gewalt und Mobbing entwickelt haben, wie Lehrer intervenieren und welche Kompetenzen sie brauchen Y1 - 2017 SN - 978-3-7815-2095-0 SP - 145 EP - 165 PB - Klinkhardt CY - Bad Heilbrunn ER - TY - CHAP A1 - Fischer, Saskia M. A1 - Ulbricht, Juliane ED - Bilz, Ludwig ED - Schubarth, Wilfried ED - Dudziak, Ines ED - Fischer, Saskia M. ED - Niproschke, Saskia ED - Ulbricht, Juliane T1 - Welche Interventionskompetenzen sind für das Lehrerhandeln in Gewalt- und Mobbingsituationen besonders bedeutsam? T2 - Gewalt und Mobbing an Schulen : wie sich Gewalt und Mobbing entwickelt haben, wie Lehrer intervenieren und welche Kompetenzen sie brauchen Y1 - 2017 SN - 978-3-7815-2095-0 SP - 255 EP - 275 PB - Klinkhardt CY - Bad Heilbrunn ER - TY - CHAP A1 - Ette, Ottmar T1 - Weiterleben / Weitererleben BT - Zur Vektopie bei Georg Forster, Alexander von Humboldt und Adelbert von Chamisso T2 - Forster – Humboldt – Chamisso : Weltreisende im Spannungsfeld der Kulturen Y1 - 2017 SN - 978-3-8471-0751-4 SP - 383 EP - 427 PB - V & R unipress CY - Göttingen ER - TY - CHAP A1 - Kotowski, Elke-Vera T1 - Weit von wo? Der Kulturtransfer jüdischer Emigration aus dem deutschsprachigen Raum BT - eine Einführung in die vorliegende Publikation T2 - Das Kulturerbe deutschsprachiger Juden : eine Spurensuche in den Ursprungs-, Transit- und Emigrationsländern Y1 - 2017 SN - 978-3-11-055395-6 SP - 1 EP - 18 PB - de Gruyter CY - Berlin ER - TY - JOUR A1 - Hoffmann, Svenja A1 - Warschburger, Petra T1 - Weight, shape, and muscularity concerns in male and female adolescents BT - predictors of change and influences on eating concern JF - The international journal of eating disorders N2 - Objective: The purpose of this study was to examine the impact of age and weight status on adolescents' body dissatisfaction and its change over 20 months in a gender-comparing design. The influence of body image concern on eating concern was also investigated. Method: In a prospective study, 675 male and female adolescents aged 12–16 were assessed using self-report questionnaires on weight, shape, muscularity, and eating concerns. Height and weight measurements were taken by trained personnel. Data were analyzed using structural equation modeling. Results: Analyses of latent means revealed more pronounced weight/shape concern in females than males and more pronounced muscularity concern in males than females. Weight/shape concern increased in females over time, whereas muscularity concern remained stable in both genders. Baseline levels of weight/shape concern could be predicted by age and weight status in females and by weight status in males. The only predictor of change in weight/shape concern was weight status in males. Baseline levels of muscularity concern could be predicted by age in females and by weight status in males. Similar effects were found for changes in muscularity concern in both genders. Increases in weight/shape and muscularity concern were associated with more pronounced eating concern. Discussion: The results confirm gender differences in distinctive facets of body image concern and its prediction. The relevance of increase in body image concern in adolescents is underlined by its association with eating concern in both genders. Further explanatory variables for change in body dissatisfaction should be examined in future studies. KW - weight and shape concern KW - muscularity concern KW - eating concern KW - gender KW - adolescence KW - prospective Y1 - 2016 U6 - https://doi.org/10.1002/eat.22635 SN - 0276-3478 SN - 1098-108X VL - 50 IS - 2 SP - 139 EP - 147 PB - Wiley CY - Hoboken ER - TY - THES A1 - Kayser, Markus T1 - Wechselwirkung der atmosphärischen Grenzschicht mit synoptisch–skaligen Prozessen während der N-ICE2015 Kampagne N2 - Die Arktis erwärmt sich schneller als der Rest der Erde. Die Auswirkungen manifestieren sich unter Anderem in einer verstärkten Erwärmung der arktischen Grenzschicht. Diese Arbeit befasst sich mit Wechselwirkungen zwischen synoptischen Zyklonen und der arktischen Atmosphäre auf lokalen bis überregionalen Skalen. Ausgangspunkt dafür sind Messdaten und Modellsimulationen für den Zeitraum der N-ICE2015 Expedition, die von Anfang Januar bis Ende Juni 2015 im arktischen Nordatlantiksektor stattgefunden hat. Anhand von Radiosondenmessungen lassen sich Auswirkungen von synoptischen Zyklonen am deutlichsten im Winter erkennen, da sie durch die Advektion warmer und feuchter Luftmassen in die Arktis den Zustand der Atmosphäre von einem strahlungs-klaren in einen strahlungs-opaken ändern. Obwohl dieser scharfe Kontrast nur im Winter existiert, zeigt die Analyse, dass der integrierte Wasserdampf als Indikator für die Advektion von Luftmassen aus niedrigen Breiten in die Arktis auch im Frühjahr geeignet ist. Neben der Advektion von Luftmassen wird der Einfluss der Zyklonen auf die statische Stabilität charakterisiert. Beim Vergleich der N-ICE2015 Beobachtungen mit der SHEBA Kampagne (1997/1998), die über dickerem Eis stattfand, finden sich trotz der unterschiedlichen Meereisregime Ähnlichkeiten in der statischen Stabilität der Atmosphäre. Die beobachteten Differenzen in der Stabilität lassen sich auf Unterschiede in der synoptischen Aktivität zurückführen. Dies lässt vermuten, dass die dünnere Eisdecke auf saisonalen Zeitskalen nur einen geringen Einfluss auf die thermodynamische Struktur der arktischen Troposphäre besitzt, solange eine dicke Schneeschicht sie bedeckt. Ein weiterer Vergleich mit den parallel zur N-ICE2015 Kampagne gestarteten Radiosonden der AWIPEV Station in Ny-Åesund, Spitzbergen, macht deutlich, dass die synoptischen Zyklonen oberhalb der Orographie auf saisonalen Zeitskalen das Wettergeschehen bestimmen. Des Weiteren werden für Februar 2015 die Auswirkungen von in der Vertikalen variiertem Nudging auf die Entwicklung der Zyklonen am Beispiel des hydrostatischen regionalen Klimamodells HIRHAM5 untersucht. Es zeigt sich, dass die Unterschiede zwischen den acht Modellsimulationen mit abnehmender Anzahl der genudgten Level zunehmen. Die größten Differenzen resultieren vornehmlich aus dem zeitlichen Versatz der Entwicklung synoptischer Zyklonen. Zur Korrektur des Zeitversatzes der Zykloneninitiierung genügt es bereits, Nudging in den unterstem 250 m der Troposphäre anzuwenden. Daneben findet sich zwischen den genudgten HIRHAM5-Simulation und den in situ Messungen der gleiche positive Temperaturbias, den auch ERA-Interim besitzt. Das freie HIRHAM hingegen reproduziert das positive Ende der N-ICE2015 Temperaturverteilung gut, besitzt aber einen starken negativen Bias, der sehr wahrscheinlich aus einer Unterschätzung des Feuchtegehalts resultiert. An Beispiel einer Zyklone wird gezeigt, dass Nudging Einfluss auf die Lage der Höhentiefs besitzt, die ihrerseits die Zyklonenentwicklung am Boden beeinflussen. Im Weiteren wird mittels eines für kleine Ensemblegrößen geeigneten Varianzmaßes eine statistische Einschätzung der Wirkung des Nudgings auf die Vertikale getroffen. Es wird festgestellt, dass die Ähnlichkeit der Modellsimulationen in der unteren Troposphäre generell höher ist als darüber und in 500 hPa ein lokales Minimum besitzt. Im letzten Teil der Analyse wird die Wechselwirkung der oberen und unteren Stratosphäre anhand zuvor betrachteter Zyklonen mit Daten der ERA-Interim Reanalyse untersucht. Lage und Ausrichtung des Polarwirbels erzeugten ab Anfang Februar 2015 eine ungewöhnlich große Meridionalkomponente des Tropopausenjets, die Zugbahnen in die zentrale Arktis begünstigte. Am Beispiel einer Zyklone wird die Übereinstimmung der synoptischen Entwicklung mit den theoretischen Annahmen über den abwärts gerichteten Einfluss der Stratosphäre auf die Troposphäre hervorgehoben. Dabei spielt die nicht-lineare Wechselwirkung zwischen der Orographie Grönlands, einer Intrusion stratosphärischer Luft in die Troposphäre sowie einer in Richtung Arktis propagierender Rossby-Welle eine tragende Rolle. Als Indikator dieser Wechselwirkung werden horizontale Signaturen aus abwechselnd aufsteigender und absinkender Luft innerhalb der Troposphäre identifiziert. N2 - The Arctic warms faster than the rest of the earth. The causes and effects of this arctic amplification are manifested in the arctic atmosphere, especially in the atmospheric boundary layer, which plays a key role in the exchange processes of the atmosphere, ocean and sea ice. This work highlights the importance of synoptic cyclones in the Arctic North Atlantic region. For this purpose, the influence of synoptic cyclones on the Arctic boundary layer as well as their interactions with different regions within the Arctic atmosphere on local to supraregional scales is investigated. The starting point for this are measurement data and model simulations for the period of the NICE2015 expedition, which took place in the Arctic North Atlantic region from early January to late June 2015. On the basis of radiosonde measurements, the effects of synoptic cyclones are most noticeable in the winter because, by the advection of warm and humid air masses into the Arctic, the condition of the atmosphere changes from a radiative clear to opaquely cloudy. Although this sharp contrast only exists in winter, the analysis shows that integrated water vapor is an indicator for the advection of air masses from low latitudes into the Arctic even in the spring. In addition to the advection of air masses, the influence of cyclones on static stability is characterized. Comparing the N-ICE2015 observations with the SHEBA campaign (1997/1998), which took place over thicker ice, similarities are found in the static stability of the atmosphere despite the different sea ice regimes. The observed differences in stability can be attributed to differences in synoptic activity. A further comparison with the radiosondes of the AWIPEV station in Ny-Åesund, Spitzbergen, which were launched parallel to the N-ICE2015 campaign, shows that synoptic cyclones determine the course of the winter months. In addition, the effects of vertically-varying nudging on the development of cyclones is examined for February 2015 using the hydrostatic regional climate model HIRHAM5. It is shown that the differences between the eight model simulations are increasing with decreasing number of nudged levels. The greatest differences are mainly due to the temporal offset of the development of synoptic cyclones. To correct the time offset of the cyclone initiation, it is sufficient to use nudging in the lowest troposphere. The free HIRHAM reproduces the positive end of the N-ICE2015 temperature distribution well, but has a strong negative bias which most likely results from an under-estimation of the moisture content. An example of a cyclone shows that nudging has an influence on the position of the high altitude lows, which in turn influences cyclone development on the ground. Furthermore, a statistical estimate of the effect of nudging on the vertical is made by means of a variance measure suitable for small ensemble sizes. It is found that the similarity of model simulations in the lower troposphere is generally higher than above and has a local minimum in 500 hPa. In the last part of the analysis, the interaction of the upper troposphere and the lower stratosphere is investigated with data from the ERA interim reanalysis using previously examined cyclones. The position and orientation of the polar vortex produced an unusually large meridional component of the tropopause jets, which favored passage of low pressure systems into the central Arctic from the beginning of February 2015 onwards. Using a cyclone as an example, the synoptic development is compared with the theoretical assumptions about the downward impact of the stratosphere on the troposphere. The non-linear interaction between Greenland’s orography, an intrusion of stratospheric air into the troposphere, and a Rossby wave propagating in the direction of the Arctic play a key role in the selected time frame. As an indicator of this interaction, horizontal signatures are identified from alternately ascending and descending air within the troposphere. KW - arktische Grenzschicht KW - Arctic boundary layer KW - synoptische Zyklone KW - synoptic cyclones KW - thermodynamische Struktur KW - thermodynamic structure KW - regional climate simulations KW - regionale Klimasimulationen KW - nudging Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-411124 ER - TY - GEN A1 - Taubert, Andreas A1 - Balischewski, Christian A1 - Hentrich, Doreen A1 - Elschner, Thomas A1 - Eidner, Sascha A1 - Günter, Christina A1 - Behrens, Karsten A1 - Heinze, Thomas T1 - Water-soluble cellulose derivatives are sustainable additives for biomimetic calcium phosphate mineralization N2 - The effect of cellulose-based polyelectrolytes on biomimetic calcium phosphate mineralization is described. Three cellulose derivatives, a polyanion, a polycation, and a polyzwitterion were used as additives. Scanning electron microscopy, X-ray diffraction, IR and Raman spectroscopy show that, depending on the composition of the starting solution, hydroxyapatite or brushite precipitates form. Infrared and Raman spectroscopy also show that significant amounts of nitrate ions are incorporated in the precipitates. Energy dispersive X-ray spectroscopy shows that the Ca/P ratio varies throughout the samples and resembles that of other bioinspired calcium phosphate hybrid materials. Elemental analysis shows that the carbon (i.e., polymer) contents reach 10% in some samples, clearly illustrating the formation of a true hybrid material. Overall, the data indicate that a higher polymer concentration in the reaction mixture favors the formation of polymer-enriched materials, while lower polymer concentrations or high precursor concentrations favor the formation of products that are closely related to the control samples precipitated in the absence of polymer. The results thus highlight the potential of (water-soluble) cellulose derivatives for the synthesis and design of bioinspired and bio-based hybrid materials. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 354 KW - cellulose KW - polyamine KW - polyammonium salt KW - polycarboxylate KW - polyzwitterion KW - calcium phosphate KW - biomineralization KW - brushite KW - hydroyxapatite KW - biomaterial Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-400453 ER - TY - THES A1 - Munz, Matthias T1 - Water flow and heat transport modelling at the interface between river and aquifer T1 - Wasserfluss- und Wärmetransportmodellierung an der Schnittstelle zwischen Fluss und Grundwasserleiter N2 - The functioning of the surface water-groundwater interface as buffer, filter and reactive zone is important for water quality, ecological health and resilience of streams and riparian ecosystems. Solute and heat exchange across this interface is driven by the advection of water. Characterizing the flow conditions in the streambed is challenging as flow patterns are often complex and multidimensional, driven by surface hydraulic gradients and groundwater discharge. This thesis presents the results of an integrated approach of studies, ranging from the acquisition of field data, the development of analytical and numerical approaches to analyse vertical temperature profiles to the detailed, fully-integrated 3D numerical modelling of water and heat flux at the reach scale. All techniques were applied in order to characterize exchange flux between stream and groundwater, hyporheic flow paths and temperature patterns. The study was conducted at a reach-scale section of the lowland Selke River, characterized by distinctive pool riffle sequences and fluvial islands and gravel bars. Continuous time series of hydraulic heads and temperatures were measured at different depths in the river bank, the hyporheic zone and within the river. The analyses of the measured diurnal temperature variation in riverbed sediments provided detailed information about the exchange flux between river and groundwater. Beyond the one-dimensional vertical water flow in the riverbed sediment, hyporheic and parafluvial flow patterns were identified. Subsurface flow direction and magnitude around fluvial islands and gravel bars at the study site strongly depended on the position around the geomorphological structures and on the river stage. Horizontal water flux in the streambed substantially impacted temperature patterns in the streambed. At locations with substantial horizontal fluxes the penetration depths of daily temperature fluctuations was reduced in comparison to purely vertical exchange conditions. The calibrated and validated 3D fully-integrated model of reach-scale water and heat fluxes across the river-groundwater interface was able to accurately represent the real system. The magnitude and variations of the simulated temperatures matched the observed ones, with an average mean absolute error of 0.7 °C and an average Nash Sutcliffe Efficiency of 0.87. The simulation results showed that the water and heat exchange at the surface water-groundwater interface is highly variable in space and time with zones of daily temperature oscillations penetrating deep into the sediment and spots of daily constant temperature following the average groundwater temperature. The average hyporheic flow path temperature was found to strongly correlate with the flow path residence time (flow path length) and the temperature gradient between river and groundwater. Despite the complexity of these processes, the simulation results allowed the derivation of a general empirical relationship between the hyporheic residence times and temperature patterns. The presented results improve our understanding of the complex spatial and temporal dynamics of water flux and thermal processes within the shallow streambed. Understanding these links provides a general basis from which to assess hyporheic temperature conditions in river reaches. N2 - Die Interaktion zwischen Oberflächenwasser und Grundwasser hat einen entscheidenden Einfluss auf die Wasserqualität und die ökologische Beschaffenheit von Seen, Flüssen und aquatischen Ökosystemen. Der Austausch von Wärme und gelösten Substanzen zwischen diesen beiden Kompartimenten ist maßgeblich durch die Austauschraten und die Strömungsrichtung des Wassers beeinflusst. Somit ist die Charakterisierung dieser beiden Größen in dem Übergangsbereich zwischen Oberflächenwasser und Grundwasser von besonderer Bedeutung. Diese Arbeit präsentiert die Entwicklung und Anwendung von Methoden zur Untersuchung der zeitlichen und räumlichen Dynamik des Wasser- und Wärmeflusses an der Schnittstelle zwischen Oberflächenwasser und Grundwasser. Die Arbeit besteht im Wesentlichen aus zwei Schwerpunkten. Der erste Schwerpunkt beinhaltet die Entwicklung und Bewertung von analytischen und numerischen Methoden zur Bestimmung der horizontalen Strömungsrichtung und Austauschraten unter Verwendung von kontinuierlich gemessenen Temperaturzeitreihen entlang vertikaler Profile im gesättigten Sediment. Flussbetttemperaturen können relativ einfach und kostengünstig entlang eines Flussabschnittes in verschiedenen Tiefen und unterschiedlichsten Flussbettsedimenten (organisch, sandig bis grob kiesig) gemessen werden. Die Hauptverwendung solcher Temperaturprofile ist bisher auf die analytische Quantifizierung vertikaler Austauschraten limitiert. Im Rahmen dieser Arbeit wurde ein Ansatz entwickelt, der eine punktuelle Ermittlung der horizontalen Strömungs-komponente, basierend auf der Veränderung der täglichen Temperaturamplitude mit zunehmender Tiefe, ermöglicht. Weiterhin wurde ein inverser, numerischer Ansatz entwickelt, der die ein-dimensionale Wärmetransportgleichung numerisch löst und mittels inverser Optimierungsalgorithmen die simulierten Temperaturen bestmöglich an die gemessenen Flussbetttemperaturen anpasst. Diese Methode ermöglicht die automatische, zeitlich variable Quantifizierung vertikaler Austauschraten an der Schnittstelle zwischen Oberflächenwasser und Grundwasser sowie eine einfache Unsicherheitsbetrachtung aufgrund der zugrunde liegenden Parameterunsicherheiten. Der zweite Schwerpunkt der Arbeit liegt auf der Anwendung der entwickelten Methoden und der Erstellung eines dreidimensionalen Simulationsmodelles entlang eines Flussabschnittes der Selke. Numerische Strömungs- und Stofftransportmodelle ermöglichen die gekoppelte Simulation von Fließprozessen im offenen Gerinne und im darunter liegenden porösen Medium. Die Parametrisierung des Modells erfolgte anhand empirischer Daten die im Untersuchungsgebiet detailliert erhoben wurden. Die Simulationsergebnisse zeigten zum einen gebietsspezifische Gegebenheiten auf, ermöglichten darüber hinaus jedoch auch die Beschreibung allgemeiner Muster und Zusammenhänge welche die Wasserfluss- und Wärmetransportprozesse an der Schnittstelle zwischen Oberflächenwasser und Grundwasser beeinflussen. So zeigten die Ergebnisse dieser Arbeit, dass maßgeblich die natürlich vorhandenen Flussbettstrukturen die Austauschraten und die Strömungsrichtung zwischen Oberflächenwasser und Grundwasser beeinflussen und somit den hyporheischen Austausch bestimmen. Wichtige Einflussfaktoren auf die untersuchten Austauschprozesse waren die Lage im Gerinne relativ zur Flussbettstruktur und der vorherrschende Wasserstand (Abfluss). Bedingt durch den Wasser- und Wärmeaustausch prägten sich im Untersuchungsgebiet Bereiche aus in denen die täglichen Temperaturschwingungen tief in das Sediment eindringen (Anstrombereich der Flussbettstrukturen), als auch Bereiche in denen relativ konstante Temperaturen, nahe der Grundwassertemperatur, vorherrschten. Die durchschnittliche Temperatur in der hyporheischen Zone wurde durch die saisonalen Temperaturschwankungen im Oberflächenwasser dominiert, wobei die Temperaturen entlang einzelner Fließpfade stark von der Verweilzeit des Oberflächen- oder Grundwassers im gesättigten Sediment und dem Temperaturgradienten zwischen Fluss und Grundwasser abhängig waren. Trotz der Komplexität dieser Zusammenhänge, ermöglichten die Simulationsergebnisse die Ableitung einer allgemeinen empirischen Beziehung zwischen den hyporheischen Verweilzeiten und Temperaturmustern. Sowohl die Verweilzeiten als auch die Temperatur im gesättigten Sediment haben einen entscheiden Einfluss auf biogeochemische Prozesse in dem Übergangsbereich zwischen Oberflächenwasser und Grundwasser und sind somit von besonderer Bedeutung für die Wasserqualität von Seen, Flüssen und aquatischen Ökosystemen. KW - surface water-groundwater interaction KW - Oberflächenwasser-Grundwasser Interaktion KW - hyporheic zone KW - hyporheische Zone KW - numerical modeling KW - numerische Modellierung KW - heat transport KW - Wärmetransport KW - temperature KW - Temperatur Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-404319 ER - TY - CHAP A1 - Knobloch, Jörn A1 - Widdau, Christoph Sebastian T1 - Was ist und was soll Kulturkritik? BT - eine Einführung T2 - Kultursoziologie Y1 - 2017 SN - 978-3-945878-50-7 SN - 0941-343X VL - 26 IS - 1 SP - 4 EP - 11 PB - WeltTrends CY - Potsdam ER - TY - CHAP A1 - Haßler, Gerda ED - Lohöfer, Astrid ED - Süselbeck, Kirsten T1 - Was ist unbestimmt am indefinido? Antworten aus der Geschichte der spanischen Grammatikographie T2 - Streifzüge durch die Romania: Festschrift für Gabriele Beck-Busse zum 60. Geburtstag Y1 - 2017 SN - 978-3-83821-000-1 SP - 31 EP - 52 PB - ibidem-Verlag CY - Stuttgart ER - TY - JOUR A1 - Hackbarth, Daniel T1 - Warum «Antihumanismus»? Materialistische Einwände gegen die Anthropologie JF - Das Leben im Menschen oder der Mensch im Leben? KW - Philosophie KW - Anthropologie KW - Anti-Humanismus KW - philosophy KW - anthropology KW - anti-humanism Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-396073 SN - 978-3-86956-382-4 SP - 239 EP - 254 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - JOUR A1 - Gerischer, Christiane T1 - Warum Soziale Arbeit inklusive Musikpädagogik braucht JF - Potsdamer Schriftenreihe zur Musikpädagogik Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-405569 SN - 978-3-86956-411-1 SP - 67 EP - 80 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - JOUR A1 - Erdmann, Melinda A1 - Ratzlaff, Olaf T1 - Wahrnehmung und Heterogenität von Fach- und Lehramtsstudierenden im Kontext von Lehrveranstaltungen JF - Potsdamer Beiträge zur Hochschulforschung Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-399723 SN - 978-3-86956-399-2 SN - 2192-1075 SN - 2192-1083 IS - 3 SP - 181 EP - 196 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - JOUR A1 - Markovic, Danijela A1 - Carrizo, Savrina F. A1 - Kaercher, Oskar A1 - Walz, Ariane A1 - David, Jonathan N. W. T1 - Vulnerability of European freshwater catchments to climate change JF - Global change biology N2 - Climate change is expected to exacerbate the current threats to freshwater ecosystems, yet multifaceted studies on the potential impacts of climate change on freshwater biodiversity at scales that inform management planning are lacking. The aim of this study was to fill this void through the development of a novel framework for assessing climate change vulnerability tailored to freshwater ecosystems. The three dimensions of climate change vulnerability are as follows: (i) exposure to climate change, (ii) sensitivity to altered environmental conditions and (iii) resilience potential. Our vulnerability framework includes 1685 freshwater species of plants, fishes, molluscs, odonates, amphibians, crayfish and turtles alongside key features within and between catchments, such as topography and connectivity. Several methodologies were used to combine these dimensions across a variety of future climate change models and scenarios. The resulting indices were overlaid to assess the vulnerability of European freshwater ecosystems at the catchment scale (18 783 catchments). The Balkan Lakes Ohrid and Prespa and Mediterranean islands emerge as most vulnerable to climate change. For the 2030s, we showed a consensus among the applied methods whereby up to 573 lake and river catchments are highly vulnerable to climate change. The anthropogenic disruption of hydrological habitat connectivity by dams is the major factor reducing climate change resilience. A gap analysis demonstrated that the current European protected area network covers <25% of the most vulnerable catchments. Practical steps need to be taken to ensure the persistence of freshwater biodiversity under climate change. Priority should be placed on enhancing stakeholder cooperation at the major basin scale towards preventing further degradation of freshwater ecosystems and maintaining connectivity among catchments. The catchments identified as most vulnerable to climate change provide preliminary targets for development of climate change conservation management and mitigation strategies. KW - catchment connectivity KW - climate change KW - exposure KW - freshwater biodiversity KW - gap analysis KW - resilience KW - sensitivity KW - vulnerability Y1 - 2017 U6 - https://doi.org/10.1111/gcb.13657 SN - 1354-1013 SN - 1365-2486 VL - 23 SP - 3567 EP - 3580 PB - Wiley CY - Hoboken ER - TY - GEN A1 - Derras, Boumédiène A1 - Bard, Pierre-Yves A1 - Cotton, Fabrice T1 - VS30, slope, H800 and f0 BT - performance of various site-condition proxies in reducing ground-motion aleatory variability and predicting nonlinear site response T2 - Postprints der Universität Potsdam : Mathematisch Naturwissenschaftliche Reihe N2 - The aim of this paper is to investigate the ability of various site-condition proxies (SCPs) to reduce ground-motion aleatory variability and evaluate how SCPs capture nonlinearity site effects. The SCPs used here are time-averaged shear-wave velocity in the top 30 m (VS30), the topographical slope (slope), the fundamental resonance frequency (f0) and the depth beyond which Vs exceeds 800 m/s (H800). We considered first the performance of each SCP taken alone and then the combined performance of the 6 SCP pairs [VS30–f0], [VS30–H800], [f0–slope], [H800–slope], [VS30–slope] and [f0–H800]. This analysis is performed using a neural network approach including a random effect applied on a KiK-net subset for derivation of ground-motion prediction equations setting the relationship between various ground-motion parameters such as peak ground acceleration, peak ground velocity and pseudo-spectral acceleration PSA (T), and Mw, RJB, focal depth and SCPs. While the choice of SCP is found to have almost no impact on the median groundmotion prediction, it does impact the level of aleatory uncertainty. VS30 is found to perform the best of single proxies at short periods (T < 0.6 s), while f0 and H800 perform better at longer periods; considering SCP pairs leads to significant improvements, with particular emphasis on [VS30–H800] and [f0–slope] pairs. The results also indicate significant nonlinearity on the site terms for soft sites and that the most relevant loading parameter for characterising nonlinear site response is the “stiff” spectral ordinate at the considered period. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 817 KW - aleatory variability KW - site-condition proxies KW - KiK-net KW - neural networks KW - GMPE KW - nonlinear site response Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-427071 SN - 1866-8372 IS - 817 ER - TY - JOUR A1 - Ferrer-Maestro, Juan José A1 - Kunst, Christiane A1 - Hernández de la Fuente, David A1 - Faber, Eike T1 - Vorwort JF - Entre los mundos: homenaje a Pedro Barceló = Zwischen den Welten : Festschrift für Pedro Barceló Y1 - 2017 SN - 978-2-84867-578-7 SP - 19 EP - 24 PB - Presses universitaires de Franche-Comté CY - Besançon ER - TY - CHAP A1 - Franzke, Jochen A1 - Koszel, Bogdan A1 - Sakson, Andrzej T1 - Vorwort T2 - Migrationspolitik in Deutschland und Polen : Herausforderungen und Lösungsansätze in der europäischen Flüchtlingskrise Y1 - 2017 SN - 978-3-945878-64-4 SP - 7 EP - 15 PB - WeltTrends CY - Potsdam ER - TY - CHAP A1 - Weiß, Norman T1 - Vorwort T2 - Die Deutsche Gesellschaft für die Vereinten Nationen (DGVN) : Geschichte, Organisation und politisches Wirken, 1952-2017 Y1 - 2017 SN - 978-3-8487-4559-3 SP - 7 EP - 7 PB - Nomos CY - Baden-Baden ER - TY - CHAP A1 - Bauer, Hartmut A1 - Peine, Franz-Joseph T1 - Vorwort T2 - Landesrecht Brandenburg : Studienbuch Y1 - 2017 SN - 978-3-8487-2828-1 SP - 5 EP - 5 PB - Nomos CY - Baden-Baden ET - 3. Aufl. ER - TY - THES A1 - Hieke, Oliver T1 - Vorvertragliche Aufklärungspflichten des Verkäufers beim Unternehmenskauf T2 - Neue Juristische Beiträge ; 122 N2 - Dem Unternehmenskauf geht eine langwierige Planungs- und Verhandlungsphase voraus. Dabei steht vor allem der gegenseitige Informationsaustausch beider Parteien im Vordergrund. Der Grundsatz der informationellen Selbstverantwortung zwingt zunächst jede Partei, die vorherrschende Informationsasymmetrie auf eigenes Risiko zu beseitigen. Das wird seitens der Rechtsprechung stets anhand von außervertraglichen Aufklärungspflichten zugunsten des Käufers korrigiert, wenn Treu und Glauben es im Einzelfall gebieten. Die Untersuchung widmet sich der Konkretisierung des Inhalts, der Reichweite und Rechtsfolgen der vorvertraglichen Aufklärungspflichten unter Auswertung bisher ergangener Rechtsprechung und Beiträgen im Schrifttum. Ein besonderes Augenmerk wird dabei neben dem Institut der culpa in contrahendo auf die Voraussetzungen der §§123, 444 BGB gelegt. Ferner wird die Bedeutung von Treu und Glauben gem. §242 BGB für die Entstehung von Aufklärungspflichten vor dem Hintergrund der spezifischen Interessenlage der Parteien und der Besonderheiten des Unternehmenskaufs beleuchtet. Y1 - 2017 SN - 978-3-8316-4704-0 PB - Utz CY - München ER - TY - JOUR A1 - Philipowski, Katharina A1 - Glauch, Sonja ED - Glauch, Sonja ED - Philipowski, Katharina T1 - Vorarbeiten zur Literaturgeschichte und Systematik vormodernen Ich-Erzählens JF - Von sich selbst erzählen. Historische Dimensionen des Ich-Erzählens Y1 - 2017 SN - 978-3-8253-6862-3 SP - 1 EP - 61 PB - Universitätsverlag Winter CY - Heidelberg ER - TY - BOOK ED - Glauch, Sonja ED - Philipowski, Katharina T1 - Von sich selbst erzählen BT - Historische Dimensionen des Ich-Erzählens T3 - Studien zur historischen Poetik ; 26 N2 - Innerhalb der Mediävistik ist das volkssprachige Erzählen in der ersten Person bisher weder erzähltheoretisch noch in seinem Verhältnis zu Gattungstypen hinreichend aufgearbeitet. Dabei spielt diese Erzählhaltung literarhistorisch eine außerordentlich bedeutsame Rolle sowohl für die Entwicklung der Gattung des Romans in der Frühen Neuzeit als auch für die Entwicklung der Idee des fiktionalen Erzählers. Dieser Band hat das Ziel, das Spektrum der Texte zwischen Autobiographie und Historiographie, mystischen Offenbarungstexten und Traumallegorien, Minnesang und Minnerede sichtbar werden zu lassen. Die Beiträge des Sammelbandes befragen exemplarische Texte des 6. bis 15. Jahrhunderts im Hinblick auf Phänomene des Narrativen in lyrischen Texten, die Rolle, die dem Minnesang, auch als Gegenstand von Zyklusbildungen, bei der Literarisierung und Etablierung des Ich-Erzählens zukommt, Lizenzen und Restriktionen des Erzählens von sich selbst, die Profilierung von Autorrollen, die Funktion der Erzählperspektive für die Verbürgung und Geltungsbehauptung von Wissen und für die Darstellung von Erkenntnisprozessen, die wechselseitigen Abhängigkeiten von Erfahrung und Ich- Erzählen sowie die Problematik des Begriffs des Autobiographischen. Y1 - 2017 SN - 978-3-8253-6862-3 PB - Universitätsverlag Winter CY - Heidelberg ER - TY - JOUR A1 - Wiesner, Linda ED - Denz, Rebekka ED - Rudolf, Gabi T1 - Von Mänteln, Beuteln und Stickereien BT - Textilfunde in Genisot JF - Genisa-Blätter II KW - Genisa KW - Jüdische Studien KW - Geniza KW - Jewish Studies Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-104599 SP - 51 EP - 66 ER - TY - JOUR A1 - Rheinberg, Falko T1 - Von Bochum über Heidelberg bis Potsdam T1 - From Bochum to Heidelberg till Potsdam BT - Ein Rückblick auf die Bochumer Schule der Motivationspsychologie und auf eigene Forschungsthemen JF - Zeitschrift für pädagogische Psychologie N2 - Dem Text liegt ein Vortrag zugrunde, der auf dem 31. Motivationspsychologischen Kolloquium (MPK) in Heidelberg 2015 gehalten wurde. Im ersten Teil bietet er einen Überblick über die Motivationsforschung am Bochumer Heckhausen-Lehrstuhl in den 70er-Jahren („Bochumer Schule“). Dabei werden neben Heinz Heckhausen einzelne Mitarbeiter und ihre Schwerpunkte vorgestellt sowie das stimulierende Arbeitsklima an diesem Lehrstuhl beschrieben. Entsprechend der Vortragseinladung wird im Anschluss die Entwicklung der eigenen Forschungsschwerpunkte skizziert. Noch unter Heckhausens Leitung waren dies zunächst die Forschung zur Bezugsnormorientierung und die Einzelfallanalysen zur Lernmotivation mit dem Erweiterten Kognitiven Motivationsmodell. Danach geht der Vortrag auf Forschungsthemen ein, die dann in Heidelberg und Potsdam dazukamen. Hier geht es um die Erforschung von Tätigkeitsanreizen und um das Flow-Erleben. Abschließend wird der Potsdamer Versuch skizziert, herauszufinden, auf welche Weise unterschiedliche Motivationsqualitäten den Lernprozess und seine Resultate beeinflussen. N2 - The talk contained in this contribution was held at the 31st MPK in Heidelberg in 2015. It deals with research on motivation done in the 1970s in Bochum by Heinz Heckhausen and his colleagues ("Bochum Research Group"). Heckhausen and each member of the group are shortly characterized through their individual work focus. The working atmosphere created in this group was highly cooperative and stimulating. In the second part, the speech deals with the topics the author worked on and how this research developed from the ideas of the Bochum group. These topics are reference norm orientation, single-case analysis of learning motivation, activity-related (vs. purpose-related) incentives, flow experience, and the investigation of the specific influences that different kinds of motivation have on self-regulated learning. KW - Activity-related incentives KW - flow experience KW - motivation to learn KW - reference norm orientation KW - Bezugsnormorientierung KW - Flow-erleben KW - Lernmotivation KW - Tätigkeitsanreize Y1 - 2017 U6 - https://doi.org/10.1024/1010-0652/a000206 SN - 1010-0652 SN - 1664-2910 VL - 31 IS - 3-4 SP - 175 EP - 189 PB - Hogrefe CY - Bern ER - TY - JOUR A1 - Bauer, Hartmut A1 - Hajasch, Lydia T1 - Vom passiven Untertan über den Wutbürger zum aktiven Citoyen in der Bürgerkommune BT - Einleitende Problemskizze JF - Partizipation in der Bürgerkommune (KWI Schriften) KW - Bürgerkommune KW - Partizipation KW - Partizipationsprozesse KW - kommunale Demokratie KW - kommunale Entscheidungsprozesse Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-104706 SN - 978-3-86956-371-8 SN - 1867-951X SN - 1867-9528 SP - 15 EP - 31 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - JOUR A1 - Müller, Monika ED - Denz, Rebekka ED - Rudolf, Gabi T1 - Vom Handeln und Schmusen BT - ein Zettel aus der Altenschönbacher Genisa JF - Genisa-Blätter II KW - Genisa KW - Jüdische Studien KW - Geniza KW - Jewish Studies Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-104659 SP - 111 EP - 117 ER - TY - JOUR A1 - Hickmann, Thomas T1 - Voluntary global business initiatives and the international climate negotiations BT - a case study of the Greenhouse Gas Protocol JF - Journal of Cleaner Production N2 - The past few years have witnessed the emergence of a plethora of transnational climate governance experiments. They have been developed by a broad range of actors, such as cities, non-profit organizations, and private corporations. Several scholars have lately devoted particular attention to voluntary global business initiatives in the policy domain of climate change. Their studies have provided considerable insights into the role and function of such new modes of climate governance. However, the precise nature of the relationship between the various climate governance experiments and the international climate negotiations has not been analyzed in enough detail. Against this backdrop, the present article explores the interplay of a business sector climate governance experiment, i.e. the Greenhouse Gas Protocol (GHG Protocol) with the international climate regime. On the one hand, the article underscores that the GHG Protocol has filled a regulatory gap in global climate policy-making by providing the means for the corporate sector to comprehensively account and report their GHGs. On the other hand, it reveals that the application of the GHG Protocol guidelines depends to a large extent on the existence of an overarching policy framework set up by nation-states at the intergovernmental level. Only if private companies receive a clear political signal that stringent mandatory GHG emission controls and a global market-based instrument are at least likely to be adopted will they put substantial efforts into the accurate measurement and management of their GHGs. Thus, this article points to the limits of climate governance experimentation and suggests that business sector climate governance experiments need to be embedded in a coherent international regulatory setting which generates a clear stimulus for corporate action. KW - Climate governance experiments KW - GHG Protocol KW - International climate negotiations KW - UNFCCC KW - Voluntary global business initiatives Y1 - 2017 U6 - https://doi.org/10.1016/j.jclepro.2017.06.183 SN - 0959-6526 SN - 1879-1786 VL - 169 SP - 94 EP - 104 PB - Elsevier CY - Oxford ER - TY - JOUR A1 - Martínez-Garzón, Patricia A1 - Kwiatek, Grzegorz A1 - Bohnhoff, Marco A1 - Dresen, Georg T1 - Volumetric components in the earthquake source related to fluid injection and stress state JF - Geophysical research letters N2 - We investigate source processes of fluid-induced seismicity from The Geysers geothermal reservoir in California to determine their relation with hydraulic operations and improve the corresponding seismic hazard estimates. Analysis of 869 well-constrained full moment tensors (M-w 0.8-3.5) reveals significant non-double-couple components (>25%) for about 65% of the events. Volumetric deformation is governed by cumulative injection rates with larger non-double-couple components observed near the wells and during high injection periods. Source mechanisms are magnitude dependent and vary significantly between faulting regimes. Normal faulting events (M-w<2) reveal substantial volumetric components indicating dilatancy in contrast to strike-slip events that have a dominant double-couple source. Volumetric components indicating closure of cracks in the source region are mostly found for reverse faulting events with M-w>2.5. Our results imply that source processes and magnitudes of fluid-induced seismic events are strongly affected by the hydraulic operations, the reservoir stress state, and the faulting regime. KW - non-double-couple components KW - induced seismicity KW - geothermal KW - stress state KW - tensile opening KW - pore pressure Y1 - 2017 U6 - https://doi.org/10.1002/2016GL071963 SN - 0094-8276 SN - 1944-8007 VL - 44 IS - 2 SP - 800 EP - 809 PB - American Geophysical Union CY - Washington ER - TY - THES A1 - Mihan, Juliane Irma T1 - Vollständige Gleichberechtigung und Gleichverpflichtung BT - die jüdisch-christliche Simultanschule in Lengsfeld T2 - Potsdamer jüdische Studien ; 2 N2 - 1850 wurde in Lengsfeld, einer Kleinstadt im Großherzogtum Sachsen-Weimar Eisenach, eine jüdisch-christliche Simultanschule gegründet. Das Innovative an dieser Schule war, dass sie als Einrichtung in gemeinsamer Trägerschaft der christlichen und jüdischen Gemeinde konzipiert wurde. Die Schuldeputierten und das Lehrerkollegium setzten sich paritätisch aus Juden und Christen zusammen. Dadurch sowie durch die gleichberechtigte Integration der christlichen und jüdischen Feiertage und des jeweiligen Religionsunterrichts in den Schulplan unterscheidet sich die Lengsfelder Schule fundamental von anderen jüdisch-christlichen Schulen ihrer Zeit. In der vorliegenden Studie wird die Schulgeschichte anhand von Akten konstruiert und in den Zusammenhang der deutsch-jüdischen Geschichte des 19. und beginnenden 20. Jahrhunderts gestellt. Mithilfe theoretischer Überlegungen zu Schultypen und Akkulturationskonzepten werden die Schule und ihre Akteure als aufgeklärt-reformerisch charakterisiert. Schließlich wird gezeigt, dass und warum die Lengsfelder Schule scheiterte. Y1 - 2017 SN - 978-3-95410-091-0 PB - bebra wissenschaft verlag CY - Berlin ER - TY - THES A1 - Salzer, Jacqueline T. T1 - Volcano dome deformation processes analysed with high resolution InSAR and camera-based techniques Y1 - 2017 ER - TY - GEN A1 - Henze, Andrea A1 - Raila, Jens A1 - Kempf, Caroline A1 - Reinke, Petra A1 - Sefrin, Anett A1 - Querfeld, Uwe A1 - Schweigert, Florian J. T1 - Vitamin A metabolism is changed in donors after living-kidney transplantation BT - an observational study N2 - Background The kidneys are essential for the metabolism of vitamin A (retinol) and its transport proteins retinol-binding protein 4 (RBP4) and transthyretin. Little is known about changes in serum concentration after living donor kidney transplantation (LDKT) as a consequence of unilateral nephrectomy; although an association of these parameters with the risk of cardiovascular diseases and insulin resistance has been suggested. Therefore we analyzed the concentration of retinol, RBP4, apoRBP4 and transthyretin in serum of 20 living-kidney donors and respective recipients at baseline as well as 6 weeks and 6 months after LDKT. Results As a consequence of LDKT, the kidney function of recipients was improved while the kidney function of donors was moderately reduced within 6 weeks after LDKT. With regard to vitamin A metabolism, the recipients revealed higher levels of retinol, RBP4, transthyretin and apoRBP4 before LDKT in comparison to donors. After LDKT, the levels of all four parameters decreased in serum of the recipients, while retinol, RBP4 as well as apoRBP4 serum levels of donors increased and remained increased during the follow-up period of 6 months. Conclusion LDKT is generally regarded as beneficial for allograft recipients and not particularly detrimental for the donors. However, it could be demonstrated in this study that a moderate reduction of kidney function by unilateral nephrectomy, resulted in an imbalance of components of vitamin A metabolism with a significant increase of retinol and RBP4 and apoRBP4 concentration in serum of donors. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 373 KW - Donors KW - glomerular filtration rate KW - kidney transplantation KW - retinol KW - retinol-binding protein 4 KW - transthyretin Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-400942 ER - TY - JOUR A1 - Koc-Januchta, Marta A1 - Höffler, Tim A1 - Thoma, Gun-Brit A1 - Prechtl, Helmut A1 - Leutner, Detlev T1 - Visualizers versus verbalizers BT - Effects of cognitive style on learning with texts and pictures - An eye-tracking study JF - Computers in human behavior N2 - This study was conducted in order to examine the differences between visualizers and verbalizers in the way they gaze at pictures and texts while learning. Using a collection of questionnaires, college students were classified according to their visual or verbal cognitive style and were asked to learn about two different, in terms of subject and type of knowledge, topics by means of text-picture combinations. Eye-tracking was used to investigate their gaze behavior. The results show that visualizers spent significantly more time inspecting pictures than verbalizers, while verbalizers spent more time inspecting texts. Results also suggest that both visualizers' and verbalizers' way of learning is active but mostly within areas providing the source of information in line with their cognitive style (pictures or text). Verbalizers tended to enter non-informative, irrelevant areas of pictures sooner than visualizers. The comparison of learning outcomes showed that the group of visualizers achieved better results than the group of verbalizers on a comprehension test. KW - Cognitive style KW - Verbalizer KW - Visualizer KW - Eye-tracking KW - Multimedia learning Y1 - 2016 U6 - https://doi.org/10.1016/j.chb.2016.11.028 SN - 0747-5632 SN - 1873-7692 VL - 68 SP - 170 EP - 179 PB - Elsevier CY - Oxford ER - TY - JOUR A1 - Baedke, Jan A1 - Schöttler, Tobias T1 - Visual Metaphors in the Sciences BT - the Case of Epigenetic Landscape Images JF - Journal for General Philosophy of Science N2 - Recent philosophical analyses of the epistemic dimension of images in the sciences show a certain trend in acknowledging potential roles of these images beyond their merely decorative or pedagogical functions. We argue, however, that this new debate has yet paid little attention to a special type of pictures, we call ‘visual metaphor’, and its versatile heuristic potential in organizing data, supporting communication, and guiding research, modeling, and theory formation. Based on a case study of Conrad Hal Waddington’s epigenetic landscape images in biology, we develop a descriptive framework applicable to heuristic roles of various visual metaphors in the sciences. KW - Conrad Hal Waddington KW - Epigenetic landscape KW - Modelling KW - Scientific images KW - Theory formation KW - Visual metaphor Y1 - 2017 U6 - https://doi.org/10.1007/s10838-016-9353-9 SN - 0925-4560 SN - 1572-8587 VL - 48 SP - 173 EP - 194 PB - Springer CY - Dordrecht ER - TY - JOUR A1 - Krahé, Barbara T1 - Violence against women JF - Current opinion in psychology N2 - Violence against women causes suffering and misery to victims and their families and places a heavy burden on societies worldwide. It mostly happens within intimate relationships or between people known to each other. Violence against women is a social construction based on a societal consensus about the roles and rights of men and women. Two prevalent forms of violence against women are physical and sexual victimization by an intimate partner, and sexual victimization outside intimate relationships. Explanations of why men engage in aggressive behavior toward women address different levels, including the macro level of society, the micro level of dyadic interactions, and the individual level of perpetrator characteristics. Prevention efforts are needed that address each of these levels. Y1 - 2017 U6 - https://doi.org/10.1016/j.copsyc.2017.03.017 SN - 2352-250X SN - 2352-2518 VL - 19 SP - 6 EP - 10 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Hartmann, Eddie T1 - Violence BT - constructing an emerging field of sociology JF - International Journal of Conflict and Violence Y1 - 2017 U6 - https://doi.org/10.4119/UNIBI/ijcv.623 SN - 1864-1385 VL - 11 SP - 1 EP - 9 PB - Institute for Interdisciplinary Conflict and Violence Research CY - Bielefeld ER -