@article{BersalliTroendleHeckmannetal.2024, author = {Bersalli, Germ{\´a}n and Tr{\"o}ndle, Tim and Heckmann, Leon and Lilliestam, Johan}, title = {Economic crises as critical junctures for policy and structural changes towards decarbonization}, series = {Climate policy}, volume = {24}, journal = {Climate policy}, number = {3}, publisher = {Taylor \& Francis}, address = {London}, issn = {1469-3062}, doi = {10.1080/14693062.2024.2301750}, pages = {410 -- 427}, year = {2024}, abstract = {Crises may act as tipping points for decarbonization pathways by triggering structural economic change or offering windows of opportunity for policy change. We investigate both types of effects of the global financial and COVID-19 crises on decarbonization in Spain and Germany through a quantitative Kaya-decomposition analysis of CO2 emissions and through a qualitative review of climate and energy policy changes. We show that the global financial crisis resulted in a critical juncture for Spanish CO2 emissions due to the combined effects of the deep economic recession and crisis-induced structural change, resulting in reductions in carbon and energy intensities and shifts in the economic structure. However, the crisis also resulted in a rollback of renewable energy policy, halting progress in the transition to green electricity. The impacts were less pronounced in Germany, where pre-existing decarbonization and policy trends continued after the crisis. Recovery packages had modest effects, primarily due to their temporary nature and the limited share of climate-related spending. The direct short-term impacts of the COVID-19 crisis on CO2 emissions were more substantial in Spain than in Germany. The policy responses in both countries sought to align short-term economic recovery with the long-term climate change goals of decarbonization, but it is too soon to observe their lasting effects. Our findings show that crises can affect structural change and support decarbonization but suggest that such effects depend on pre-existing trends, the severity of the crisis and political manoeuvring during the crisis.}, language = {en} } @phdthesis{Benz2024, author = {Benz, Eleanor}, title = {The advisory function of the Inter-American Court of Human Rights}, series = {Beitr{\"a}ge zum ausl{\"a}ndischen {\"o}ffentlichen Recht und V{\"o}lkerrecht}, volume = {329}, journal = {Beitr{\"a}ge zum ausl{\"a}ndischen {\"o}ffentlichen Recht und V{\"o}lkerrecht}, publisher = {Nomos}, address = {Baden-Baden}, issn = {978-3-7489-1980-3}, doi = {10.5771/9783748919803}, school = {Universit{\"a}t Potsdam}, pages = {478}, year = {2024}, abstract = {How do the rights of same-sex couples have to be ensured by states, and which kind of environmental obligations are induced by the right to life and to personal integrity? Questions as diverse and far-reaching as these are regularly dealt with by the Inter-American Court of Human Rights in its advisory function. This book is the first comprehensive, non-Spanish-written treatise on the advisory function of this Court. It analyzes the scope of the Court's advisory jurisdiction and its procedural practice in comparison with that of other international courts. Moreover, the legal effects of the Court's advisory opinions and the question when the Court should better reject a request for an advisory opinion are examined.}, language = {en} } @phdthesis{Benson2024, author = {Benson, Lawrence}, title = {Efficient state management with persistent memory}, doi = {10.25932/publishup-62563}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-625637}, school = {Universit{\"a}t Potsdam}, pages = {xiii, 124}, year = {2024}, abstract = {Efficiently managing large state is a key challenge for data management systems. Traditionally, state is split into fast but volatile state in memory for processing and persistent but slow state on secondary storage for durability. Persistent memory (PMem), as a new technology in the storage hierarchy, blurs the lines between these states by offering both byte-addressability and low latency like DRAM as well persistence like secondary storage. These characteristics have the potential to cause a major performance shift in database systems. Driven by the potential impact that PMem has on data management systems, in this thesis we explore their use of PMem. We first evaluate the performance of real PMem hardware in the form of Intel Optane in a wide range of setups. To this end, we propose PerMA-Bench, a configurable benchmark framework that allows users to evaluate the performance of customizable database-related PMem access. Based on experimental results obtained with PerMA-Bench, we discuss findings and identify general and implementation-specific aspects that influence PMem performance and should be considered in future work to improve PMem-aware designs. We then propose Viper, a hybrid PMem-DRAM key-value store. Based on PMem-aware access patterns, we show how to leverage PMem and DRAM efficiently to design a key database component. Our evaluation shows that Viper outperforms existing key-value stores by 4-18x for inserts while offering full data persistence and achieving similar or better lookup performance. Next, we show which changes must be made to integrate PMem components into larger systems. By the example of stream processing engines, we highlight limitations of current designs and propose a prototype engine that overcomes these limitations. This allows our prototype to fully leverage PMem's performance for its internal state management. Finally, in light of Optane's discontinuation, we discuss how insights from PMem research can be transferred to future multi-tier memory setups by the example of Compute Express Link (CXL). Overall, we show that PMem offers high performance for state management, bridging the gap between fast but volatile DRAM and persistent but slow secondary storage. Although Optane was discontinued, new memory technologies are continuously emerging in various forms and we outline how novel designs for them can build on insights from existing PMem research.}, language = {en} } @inproceedings{BenderWinterSchmidtetal.2024, author = {Bender, Benedict and Winter, Robert and Schmidt, Pamela and Narasimhan, Sathya}, title = {Minitrack introduction: Enterprise Ecosystems}, series = {Proceedings of the 57th Annual Hawaii International Conference on System Sciences}, booktitle = {Proceedings of the 57th Annual Hawaii International Conference on System Sciences}, editor = {Bui, Tung X.}, publisher = {Hawaii International Conference on System Sciences}, address = {Honolulu, HI}, isbn = {978-0-9981331-7-1}, issn = {2572-6862}, pages = {6370 -- 6371}, year = {2024}, abstract = {While Information Systems Research exists at the individual and workgroup levels, research on IS at the enterprise level is less common. The potential synergies between the study of enterprise systems (ES) and related fields have been underexplored and often treated as separate entities. The ongoing challenge is to seamlessly integrate technological advances and align business processes across organizations. While systems integration within an organization is common, changes occur when industry and ecosystem perspectives come into play. The four selected papers address different facets of the future role of enterprise ecosystems, including implementation challenges, ecosystem boundaries, and B2B platform specifics.}, language = {en} } @phdthesis{Behrmann2024, author = {Behrmann, Helga}, title = {Digital Fashion}, doi = {10.25932/publishup-62026}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-620269}, school = {Universit{\"a}t Potsdam}, pages = {309}, year = {2024}, abstract = {Das virtuelle Kleid als mediale und soziokulturelle Alltagserscheinung der Gegenwart bildet den Gegenstand der vorliegenden interdisziplin{\"a}ren Unter-suchung. An der Schnittstelle zwischen Menschen, Medien und Mode ist das virtuelle Kleid an unrealen Orten und in synthetischen Situationen ausschließlich auf einem Screen erfahrbar. In diesem Dispositiv lassen sich K{\"o}rperkonzepte, Darstellungskonventionen, soziale Handlungsmuster und Kommunikations-strategien ausmachen, die zwar auf einer radikalen Abl{\"o}sung vom textilen Material beruhen, aber dennoch nicht ohne sehr konkrete Verweise auf das textile Material auskommen. Dies f{\"u}hrt zu neuen Ans{\"a}tzen der Auseinandersetzung mit Kleidern, die nun als Visualisierung geb{\"u}ndelter Datenpakete zu betrachten sind. Die dynamische Entwicklung neuer Erscheinungsformen und deren nahtlose Einbindung in traditionelle Gesch{\"a}ftsmodelle und bestehende Modekonzepte macht eine Positionsbestimmung notwendig, insbesondere im Hinblick auf gegenw{\"a}rtige Nachhaltigkeitsdiskurse um immaterielle Produkte. F{\"u}r diese Studie liefern die hinter den Bildern liegenden Prozesse der {\"o}konomischen Ausrichtung, der Herstellung, der Verwendung und der Rezeption den methodologischen Zugang f{\"u}r die Analyse. Mithilfe eines typologisierenden Instrumentariums wird aus der Vielzahl und Vielfalt der Darstellungen ein Set an forschungsleitenden Beispielen zusammengestellt, welche dann in einer mehrstufigen Kontextanalyse zu einer begrifflichen Fassung des virtuellen Kleides sowie zu f{\"u}nf Kontexteinheiten f{\"u}hren. Am Beispiel des virtuellen Kleides zeichnet diese Untersuchung den technischen, gesellschaftlichen und sozialen Wandel nach und arbeitet seine Bedeutung f{\"u}r zuk{\"u}nftige Modeentwicklungen heraus. Damit leistet die Untersuchung einen Beitrag zur medien- und sozialwissenschaftlichen Modeforschung der Gegenwart.}, language = {de} } @phdthesis{Baumgart2024, author = {Baumgart, Lene}, title = {Die Ambivalenz der Digitalisierung}, doi = {10.25932/publishup-63040}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-630401}, school = {Universit{\"a}t Potsdam}, pages = {137}, year = {2024}, abstract = {Ausgehend von der Beobachtung, dass die aktuelle Digitalisierungsforschung die Ambivalenz der Digitalisierung zwar erkennt, aber nicht zum Gegenstand ihrer Analysen macht, fokussiert die vorliegende kumulative Dissertation auf die ambivalente Dichotomie aus Potenzialen und Problemen, die mit digitalen Transformationen von Organisationen einhergeht. Entlang von sechs Publikationen wird mit einem systemtheoretischen Blick auf Organisationen die spannungsvolle Dichotomie hinsichtlich dreier ambivalenter Verh{\"a}ltnisse aufgezeigt: Erstens wird in Bezug auf das Verh{\"a}ltnis von Digitalisierung und Postb{\"u}rokratie deutlich, dass digitale Transformationen das Potenzial aufweisen, postb{\"u}rokratische Arbeitsweisen zu erleichtern. Parallel ergibt sich das Problem, dass auf Konsens basierende postb{\"u}rokratische Strukturen Digitalisierungsinitiativen erschweren, da diese auf eine Vielzahl von Entscheidungen angewiesen sind. Zweitens zeigt sich mit Blick auf das ambivalente Verh{\"a}ltnis von Digitalisierung und Vernetzung, dass einerseits organisationsweite Kooperation erm{\"o}glicht wird, w{\"a}hrend sich andererseits die Gefahr digitaler Widerspruchskommunikation auftut. Beim dritten Verh{\"a}ltnis zwischen Digitalisierung und Gender deutet sich das mit neuen digitalen Technologien einhergehende Potenzial f{\"u}r Gender Inklusion an, w{\"a}hrend zugleich das Problem einprogrammierter Gender Biases auftritt, die Diskriminierungen oftmals versch{\"a}rfen. Durch die Gegen{\"u}berstellung der Potenziale und Probleme wird nicht nur die Ambivalenz organisationaler Digitalisierung analysierbar und verst{\"a}ndlich, es stellt sich auch heraus, dass mit digitalen Transformationen einen doppelte Formalisierung einhergeht: Organisationen werden nicht nur mit den f{\"u}r Reformen {\"u}blichen Anpassungen der formalen Strukturen konfrontiert, sondern m{\"u}ssen zus{\"a}tzlich formale Entscheidungen zu Technikeinf{\"u}hrung und -beibehaltung treffen sowie formale L{\"o}sungen etablieren, um auf unvorhergesehene Potenziale und Probleme reagieren. Das Ziel der Dissertation ist es, eine analytisch generalisierte Heuristik an die Hand zu geben, mit deren Hilfe die Errungenschaften und Chancen digitaler Transformationen identifiziert werden k{\"o}nnen, w{\"a}hrend sich parallel ihr Verh{\"a}ltnis zu den gleichzeitig entstehenden Herausforderungen und Folgeproblemen erkl{\"a}ren l{\"a}sst.}, language = {de} } @book{Balderjahn2024, author = {Balderjahn, Ingo}, title = {Lust auf Verzicht}, publisher = {oekom verlag}, address = {M{\"u}nchen}, isbn = {978-3-98726-319-4}, doi = {10.14512/9783987263194}, pages = {216}, year = {2024}, abstract = {Der globale Klimawandel nimmt weiter bedrohlich zu. Hitzewellen, Flutkatastrophen und Waldbr{\"a}nde geh{\"o}ren fast schon zum Alltag. Trotzdem ist die Bereitschaft in der deutschen Bev{\"o}lkerung gering, selbst einen Beitrag zum Klimaschutz zu leisten. Das {\"u}berrascht, denn in Umfragen bekennt sich immer eine große Mehrheit zum Klimaschutz. Allerdings haben wohl viele einen Klimaschutz im Kopf, der pers{\"o}nlich nichts kosten und nichts ver{\"a}ndern darf. Ingo Balderjahn setzt sich mit diesem Widerspruch aus verhaltenswissenschaftlicher Sicht auseinander und legt offen, warum viele weiterhin ungebremst verschwenderisch und klimasch{\"a}dlich konsumieren. Andererseits gibt es durchaus Menschen, die deutlich weniger konsumieren, als sie sich finanziell leisten k{\"o}nnten. Diese Minderheit in Deutschland verzichtet freiwillig auf eher unn{\"o}tige und kurzlebige G{\"u}ter - ohne irgendetwas dabei zu entbehren. Im Gegenteil: Gen{\"u}gsame Konsumgewohnheiten st{\"a}rken die pers{\"o}nliche Selbstbestimmung, Unabh{\"a}ngigkeit und Zufriedenheit.}, language = {de} } @phdthesis{Aue2024, author = {Aue, Lars}, title = {Cyclone impacts on sea ice in the Atlantic Arctic Ocean}, doi = {10.25932/publishup-63445}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-634458}, school = {Universit{\"a}t Potsdam}, pages = {VIII, 131}, year = {2024}, abstract = {The Arctic is the hot spot of the ongoing, global climate change. Over the last decades, near-surface temperatures in the Arctic have been rising almost four times faster than on global average. This amplified warming of the Arctic and the associated rapid changes of its environment are largely influenced by interactions between individual components of the Arctic climate system. On daily to weekly time scales, storms can have major impacts on the Arctic sea-ice cover and are thus an important part of these interactions within the Arctic climate. The sea-ice impacts of storms are related to high wind speeds, which enhance the drift and deformation of sea ice, as well as to changes in the surface energy budget in association with air mass advection, which impact the seasonal sea-ice growth and melt. The occurrence of storms in the Arctic is typically associated with the passage of transient cyclones. Even though the above described mechanisms how storms/cyclones impact the Arctic sea ice are in principal known, there is a lack of statistical quantification of these effects. In accordance with that, the overarching objective of this thesis is to statistically quantify cyclone impacts on sea-ice concentration (SIC) in the Atlantic Arctic Ocean over the last four decades. In order to further advance the understanding of the related mechanisms, an additional objective is to separate dynamic and thermodynamic cyclone impacts on sea ice and assess their relative importance. Finally, this thesis aims to quantify recent changes in cyclone impacts on SIC. These research objectives are tackled utilizing various data sets, including atmospheric and oceanic reanalysis data as well as a coupled model simulation and a cyclone tracking algorithm. Results from this thesis demonstrate that cyclones are significantly impacting SIC in the Atlantic Arctic Ocean from autumn to spring, while there are mostly no significant impacts in summer. The strength and the sign (SIC decreasing or SIC increasing) of the cyclone impacts strongly depends on the considered daily time scale and the region of the Atlantic Arctic Ocean. Specifically, an initial decrease in SIC (day -3 to day 0 relative to the cyclone) is found in the Greenland, Barents and Kara Seas, while SIC increases following cyclones (day 0 to day 5 relative to the cyclone) are mostly limited to the Barents and Kara Seas. For the cold season, this results in a pronounced regional difference between overall (day -3 to day 5 relative to the cyclone) SIC-decreasing cyclone impacts in the Greenland Sea and overall SIC-increasing cyclone impacts in the Barents and Kara Seas. A cyclone case study based on a coupled model simulation indicates that both dynamic and thermodynamic mechanisms contribute to cyclone impacts on sea ice in winter. A typical pattern consisting of an initial dominance of dynamic sea-ice changes followed by enhanced thermodynamic ice growth after the cyclone passage was found. This enhanced ice growth after the cyclone passage most likely also explains the (statistical) overall SIC-increasing effects of cyclones in the Barents and Kara Seas in the cold season. Significant changes in cyclone impacts on SIC over the last four decades have emerged throughout the year. These recent changes are strongly varying from region to region and month to month. The strongest trends in cyclone impacts on SIC are found in autumn in the Barents and Kara Seas. Here, the magnitude of destructive cyclone impacts on SIC has approximately doubled over the last four decades. The SIC-increasing effects following the cyclone passage have particularly weakened in the Barents Sea in autumn. As a consequence, previously existing overall SIC-increasing cyclone impacts in this region in autumn have recently disappeared. Generally, results from this thesis show that changes in the state of the sea-ice cover (decrease in mean sea-ice concentration and thickness) and near-surface air temperature are most important for changed cyclone impacts on SIC, while changes in cyclone properties (i.e. intensity) do not play a significant role.}, language = {en} } @phdthesis{Apodiakou2024, author = {Apodiakou, Anastasia}, title = {Analysis of the regulation of SDI genes, unravelling the role of the SLIM1 transcription factor, and the SNRK3.15 kinase in Arabidopsis under sulfur deprivation}, school = {Universit{\"a}t Potsdam}, pages = {141}, year = {2024}, language = {en} } @incollection{Apelojg2024, author = {Apelojg, Benjamin}, title = {I need to move it, move It!}, series = {Emotion in organizations}, booktitle = {Emotion in organizations}, editor = {Ashkanasy, Neal M. and Troth, Ashlea C. and Humphrey, Ronald H.}, publisher = {Emerald Publishing Limited}, address = {Bingley}, isbn = {978-1-83797-251-7}, doi = {10.1108/S1746-979120240000019002}, pages = {13 -- 35}, year = {2024}, abstract = {Purpose Student interest and learning success is an important component of teaching learning research. However, while the impact of emotions and psychological needs on students' achievements has been a focus of research, the impact of their physiological needs has been under studied. In this explorative study, I examine what impact the physiological and psychological needs of student teachers have on their feelings, motivation, and interest in different learning settings. Approach The research method used was the daily reconstruction method and included the Felix-App, a new digital research and feedback tool that allows the measurement of feelings, needs, motivation, and interest in real time. Findings The results suggest the importance of physiological needs for perceived emotions, motivation, and interest in the learning subject. The psychological needs, on the other hand, are of less importance. Originality The Felix-App is an innovative tool to learn more about learners' emotions and needs in real learning settings. The importance of physiological needs has been known since Maslow, but should be considered much more in the context of teaching and learning research in the future. There is a need for further research on the importance of physical aspects in learning.}, language = {en} } @phdthesis{Antonoglou2024, author = {Antonoglou, Nikolaos}, title = {GNSS-based remote sensing: Innovative observation of key hydrological parameters in the Central Andes}, doi = {10.25932/publishup-62825}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-628256}, school = {Universit{\"a}t Potsdam}, pages = {xxii, 116}, year = {2024}, abstract = {The Central Andean region is characterized by diverse climate zones with sharp transitions between them. In this work, the area of interest is the South-Central Andes in northwestern Argentina that borders with Bolivia and Chile. The focus is the observation of soil moisture and water vapour with Global Navigation Satellite System (GNSS) remote-sensing methodologies. Because of the rapid temporal and spatial variations of water vapour and moisture circulations, monitoring this part of the hydrological cycle is crucial for understanding the mechanisms that control the local climate. Moreover, GNSS-based techniques have previously shown high potential and are appropriate for further investigation. This study includes both logistic-organization effort and data analysis. As for the prior, three GNSS ground stations were installed in remote locations in northwestern Argentina to acquire observations, where there was no availability of third-party data. The methodological development for the observation of the climate variables of soil moisture and water vapour is independent and relies on different approaches. The soil-moisture estimation with GNSS reflectometry is an approximation that has demonstrated promising results, but it has yet to be operationally employed. Thus, a more advanced algorithm that exploits more observations from multiple satellite constellations was developed using data from two pilot stations in Germany. Additionally, this algorithm was slightly modified and used in a sea-level measurement campaign. Although the objective of this application is not related to monitoring hydrological parameters, its methodology is based on the same principles and helps to evaluate the core algorithm. On the other hand, water-vapour monitoring with GNSS observations is a well-established technique that is utilized operationally. Hence, the scope of this study is conducting a meteorological analysis by examining the along-the-zenith air-moisture levels and introducing indices related to the azimuthal gradient. The results of the experiments indicate higher-quality soil moisture observations with the new algorithm. Furthermore, the analysis using the stations in northwestern Argentina illustrates the limits of this technology because of varying soil conditions and shows future research directions. The water-vapour analysis points out the strong influence of the topography on atmospheric moisture circulation and rainfall generation. Moreover, the GNSS time series allows for the identification of seasonal signatures, and the azimuthal-gradient indices permit the detection of main circulation pathways.}, language = {en} } @techreport{AndresBruttel2024, type = {Working Paper}, author = {Andres, Maximilian and Bruttel, Lisa}, title = {Communicating Cartel Intentions}, series = {CEPA Discussion Papers}, journal = {CEPA Discussion Papers}, number = {77}, issn = {2628-653X}, doi = {10.25932/publishup-63846}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-638469}, pages = {36}, year = {2024}, abstract = {While the economic harm of cartels is caused by their price-increasing effect, sanctioning by courts rather targets at the underlying process of firms reaching a price-fixing agreement. This paper provides experimental evidence on the question whether such sanctioning meets the economic target, i.e., whether evidence of a collusive meeting of the firms and of the content of their communication reliably predicts subsequent prices. We find that already the mere mutual agreement to meet predicts a strong increase in prices. Conversely, express distancing from communication completely nullifies its otherwise price-increasing effect. Using machine learning, we show that communication only increases prices if it is very explicit about how the cartel plans to behave.}, language = {en} } @techreport{Andres2024, type = {Working Paper}, author = {Andres, Maximilian}, title = {Equilibrium selection in infinitely repeated games with communication}, series = {CEPA Discussion Papers}, journal = {CEPA Discussion Papers}, number = {75}, issn = {2628-653X}, doi = {10.25932/publishup-63180}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-631800}, pages = {38}, year = {2024}, abstract = {The present paper proposes a novel approach for equilibrium selection in the infinitely repeated prisoner's dilemma where players can communicate before choosing their strategies. This approach yields a critical discount factor that makes different predictions for cooperation than the usually considered sub-game perfect or risk dominance critical discount factors. In laboratory experiments, we find that our factor is useful for predicting cooperation. For payoff changes where the usually considered factors and our factor make different predictions, the observed cooperation is consistent with the predictions based on our factor.}, language = {en} } @phdthesis{AlhosseiniAlmodarresiYasin2024, author = {Alhosseini Almodarresi Yasin, Seyed Ali}, title = {Classification, prediction and evaluation of graph neural networks on online social media platforms}, doi = {10.25932/publishup-62642}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-626421}, school = {Universit{\"a}t Potsdam}, pages = {xviii, 78}, year = {2024}, abstract = {The vast amount of data generated on social media platforms have made them a valuable source of information for businesses, governments and researchers. Social media data can provide insights into user behavior, preferences, and opinions. In this work, we address two important challenges in social media analytics. Predicting user engagement with online content has become a critical task for content creators to increase user engagement and reach larger audiences. Traditional user engagement prediction approaches rely solely on features derived from the user and content. However, a new class of deep learning methods based on graphs captures not only the content features but also the graph structure of social media networks. This thesis proposes a novel Graph Neural Network (GNN) approach to predict user interaction with tweets. The proposed approach combines the features of users, tweets and their engagement graphs. The tweet text features are extracted using pre-trained embeddings from language models, and a GNN layer is used to embed the user in a vector space. The GNN model then combines the features and graph structure to predict user engagement. The proposed approach achieves an accuracy value of 94.22\% in classifying user interactions, including likes, retweets, replies, and quotes. Another major challenge in social media analysis is detecting and classifying social bot accounts. Social bots are automated accounts used to manipulate public opinion by spreading misinformation or generating fake interactions. Detecting social bots is critical to prevent their negative impact on public opinion and trust in social media. In this thesis, we classify social bots on Twitter by applying Graph Neural Networks. The proposed approach uses a combination of both the features of a node and an aggregation of the features of a node's neighborhood to classify social bot accounts. Our final results indicate a 6\% improvement in the area under the curve score in the final predictions through the utilization of GNN. Overall, our work highlights the importance of social media data and the potential of new methods such as GNNs to predict user engagement and detect social bots. These methods have important implications for improving the quality and reliability of information on social media platforms and mitigating the negative impact of social bots on public opinion and discourse.}, language = {en} } @book{AlexyFisahnHaehnchenetal.2024, author = {Alexy, Lennart and Fisahn, Andreas and H{\"a}hnchen, Susanne and Mushoff, Tobias and Trepte, Uwe}, title = {Das Rechtslexikon}, edition = {2., vollst{\"a}ndig {\"u}berarbeitete und erweiterte}, publisher = {Dietz}, address = {Bonn}, isbn = {978-3-8012-0631-4}, pages = {356}, year = {2024}, abstract = {Kompetenz im handlichen Format in {\"u}ber 1.400 Stichw{\"o}rtern, 26 Tabellen und Schaubildern zu allen wichtigen Rechtsgebieten: Zivilrecht (z. B. Familien- und Erbrecht, Versicherungsrecht), Arbeitsrecht, {\"O}ffentliches Recht (z. B. Baurecht, Staats- und Verfassungsrecht, Umweltrecht, Verwaltungsrecht), Sozialrecht (z. B. Arbeitslosen- und Rentenversicherung), Strafrecht (einschließlich Jugendstrafrecht und Ordnungswidrigkeiten) sowie ihren europa- und v{\"o}lkerrechtlichen Bez{\"u}gen. Das Rechtslexikon ist in seiner 2. Auflage erg{\"a}nzt worden um zahlreiche neue und aktuelle Begriffe wie Impfpflicht, Quarant{\"a}ne, Radwegbenutzung, Schutzpflicht, Crowdworking, Homeoffice/mobiles Arbeiten, Datenschutzgrundverordnung, Mediation, Smart Contract u.v.a.m. Das Lexikon erkl{\"a}rt außerdem Normen und Grunds{\"a}tze des deutschen und europ{\"a}ischen Rechts, knapp, zuverl{\"a}ssig und verst{\"a}ndlich. Grundlegende Fragen und Zusammenh{\"a}nge werden in besonderen {\"U}berblicksartikeln erl{\"a}utert. Querverweise machen auf verwandte Themen im Lexikon aufmerksam. Ein Lexikon f{\"u}r juristisch interessierte Laien, Studierende sowie Sch{\"u}lerinnen und Sch{\"u}ler.}, language = {de} } @phdthesis{Alawashra2024, author = {Alawashra, Mahmoud}, title = {Plasma instabilities of TeV pair beams induced by blazars}, doi = {10.25932/publishup-63013}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-630131}, school = {Universit{\"a}t Potsdam}, pages = {xxi, 130}, year = {2024}, abstract = {Relativistic pair beams produced in the cosmic voids by TeV gamma rays from blazars are expected to produce a detectable GeV-scale cascade emission missing in the observations. The suppression of this secondary cascade implies either the deflection of the pair beam by intergalactic magnetic fields (IGMFs) or an energy loss of the beam due to the electrostatic beam-plasma instability. IGMF of femto-Gauss strength is sufficient to significantly deflect the pair beams reducing the flux of secondary cascade below the observational limits. A similar flux reduction may result in the absence of the IGMF from the beam energy loss by the instability before the inverse Compton cooling. This dissertation consists of two studies about the instability role in the evolution of blazar-induced beams. Firstly, we investigated the effect of sub-fG level IGMF on the beam energy loss by the instability. Considering IGMF with correlation lengths smaller than a few kpc, we found that such fields increase the transverse momentum of the pair beam particles, dramatically reducing the linear growth rate of the electrostatic instability and hence the energy-loss rate of the pair beam. Our results show that the IGMF eliminates beam plasma instability as an effective energy-loss agent at a field strength three orders of magnitude below that needed to suppress the secondary cascade emission by magnetic deflection. For intermediate-strength IGMF, we do not know a viable process to explain the observed absence of GeV-scale cascade emission and hence can be excluded. Secondly, we probed how the beam-plasma instability feeds back on the beam, using a realistic two-dimensional beam distribution. We found that the instability broadens the beam opening angles significantly without any significant energy loss, thus confirming a recent feedback study on a simplified one-dimensional beam distribution. However, narrowing diffusion feedback of the beam particles with Lorentz factors less than 1e6 might become relevant even though initially it is negligible. Finally, when considering the continuous creation of TeV pairs, we found that the beam distribution and the wave spectrum reach a new quasi-steady state, in which the scattering of beam particles persists and the beam opening angle may increase by a factor of hundreds. This new intrinsic scattering of the cascade can result in time delays of around ten years, thus potentially mimicking the IGMF deflection. Understanding the implications on the GeV cascade emission requires accounting for inverse Compton cooling and simulating the beam-plasma system at different points in the IGM.}, language = {en} } @phdthesis{Adelt2024, author = {Adelt, Anne}, title = {The Relativized Minimality approach to comprehension of German relative clauses in aphasia}, doi = {10.25932/publishup-62331}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-623312}, school = {Universit{\"a}t Potsdam}, pages = {xiii, 166}, year = {2024}, abstract = {It is a well-attested finding in head-initial languages that individuals with aphasia (IWA) have greater difficulties in comprehending object-extracted relative clauses (ORCs) as compared to subject-extracted relative clauses (SRCs). Adopting the linguistically based approach of Relativized Minimality (RM; Rizzi, 1990, 2004), the subject-object asymmetry is attributed to the occurrence of a Minimality effect in ORCs due to reduced processing capacities in IWA (Garraffa \& Grillo, 2008; Grillo, 2008, 2009). For ORCs, it is claimed that the embedded subject intervenes in the syntactic dependency between the moved object and its trace, resulting in greater processing demands. In contrast, no such intervener is present in SRCs. Based on the theoretical framework of RM and findings from language acquisition (Belletti et al., 2012; Friedmann et al., 2009), it is assumed that Minimality effects are alleviated when the moved object and the intervening subject differ in terms of relevant syntactic features. For German, the language under investigation, the RM approach predicts that number (i.e., singular vs. plural) and the lexical restriction [+NP] feature (i.e., lexically restricted determiner phrases vs. lexically unrestricted pronouns) are considered relevant in the computation of Minimality. Greater degrees of featural distinctiveness are predicted to result in more facilitated processing of ORCs, because IWA can more easily distinguish between the moved object and the intervener. This cumulative dissertation aims to provide empirical evidence on the validity of the RM approach in accounting for comprehension patterns during relative clause (RC) processing in German-speaking IWA. For that purpose, I conducted two studies including visual-world eye-tracking experiments embedded within an auditory referent-identification task to study the offline and online processing of German RCs. More specifically, target sentences were created to evaluate (a) whether IWA demonstrate a subject-object asymmetry, (b) whether dissimilarity in the number and/or the [+NP] features facilitates ORC processing, and (c) whether sentence processing in IWA benefits from greater degrees of featural distinctiveness. Furthermore, by comparing RCs disambiguated through case marking (at the relative pronoun or the following noun phrase) and number marking (inflection of the sentence-final verb), it was possible to consider the role of the relative position of the disambiguation point. The RM approach predicts that dissimilarity in case should not affect the occurrence of Minimality effects. However, the case cue to sentence interpretation appears earlier within RCs than the number cue, which may result in lower processing costs in case-disambiguated RCs compared to number-disambiguated RCs. In study I, target sentences varied with respect to word order (SRC vs. ORC) and dissimilarity in the [+NP] feature (lexically restricted determiner phrase vs. pronouns as embedded element). Moreover, by comparing the impact of these manipulations in case- and number-disambiguated RCs, the effect of dissimilarity in the number feature was explored. IWA demonstrated a subject-object asymmetry, indicating the occurrence of a Minimality effect in ORCs. However, dissimilarity neither in the number feature nor in the [+NP] feature alone facilitated ORC processing. Instead, only ORCs involving distinct specifications of both the number and the [+NP] features were well comprehended by IWA. In study II, only temporarily ambiguous ORCs disambiguated through case or number marking were investigated, while controlling for varying points of disambiguation. There was a slight processing advantage of case marking as cue to sentence interpretation as compared to number marking. Taken together, these findings suggest that the RM approach can only partially capture empirical data from German IWA. In processing complex syntactic structures, IWA are susceptible to the occurrence of the intervening subject in ORCs. The new findings reported in the thesis show that structural dissimilarity can modulate sentence comprehension in aphasia. Interestingly, IWA can override Minimality effects in ORCs and derive correct sentence meaning if the featural specifications of the constituents are maximally different, because they can more easily distinguish the moved object and the intervening subject given their reduced processing capacities. This dissertation presents new scientific knowledge that highlights how the syntactic theory of RM helps to uncover selective effects of morpho-syntactic features on sentence comprehension in aphasia, emphasizing the close link between assumptions from theoretical syntax and empirical research.}, language = {en} } @article{AbramovaGladkayaKrasnova2024, author = {Abramova, Olga and Gladkaya, Margarita and Krasnova, Hanna}, title = {The differential effects of self-view in virtual meetings when speaking vs. listening}, series = {European journal of information systems}, journal = {European journal of information systems}, publisher = {Taylor \& Francis}, address = {London}, issn = {0960-085X}, doi = {10.1080/0960085X.2024.2325350}, pages = {1 -- 19}, year = {2024}, abstract = {With the surging reliance on videoconferencing tools, users may find themselves staring at their reflections for hours a day. We refer to this phenomenon as self-referential information (SRI) consumption and examine its consequences and the mechanism behind them. Building on self-awareness research and the strength model of self-control, we argue that SRI consumption heightens the state of self-awareness and thereby depletes participants' mental resources, eventually undermining virtual meeting (VM) outcomes. Our findings from a European employee sample revealed contrary effects of SRI consumption across speaker vs listener roles. Engagement with self-view is positively associated with self-awareness, which, in turn, is negatively related to satisfaction with VM process, perceived productivity, and enjoyment. Looking at the self while listening to others exhibits adverse direct and indirect (via self-awareness) effects on VM outcomes. However, looking at the self when speaking exhibits positive direct effects on satisfaction with VM process and enjoyment.}, language = {en} } @inproceedings{AbendrothBenderGronau2024, author = {Abendroth, Adrian and Bender, Benedict and Gronau, Norbert}, title = {The evolution of original ERP customization}, series = {Proceedings of the 26th International Conference on Enterprise Information Systems}, volume = {1}, booktitle = {Proceedings of the 26th International Conference on Enterprise Information Systems}, publisher = {SCITEPRESS - Science and Technology Publications}, address = {Set{\´u}bal}, isbn = {978-989-758-692-7}, issn = {2184-4992}, doi = {10.5220/0012305500003690}, pages = {17 -- 27}, year = {2024}, abstract = {Enterprise Resource Planning (ERP) system customization is often necessary because companies have unique processes that provide their competitive advantage. Despite new technological advances such as cloud computing or model-driven development, technical ERP customization options are either outdated or ambiguously formulated in the scientific literature. Using a systematic literature review (SLR) that analyzes 137 definitions from 26 papers, the result is an analysis and aggregation of technical customization types by providing clearance and aligning with future organizational needs. The results show a shift from ERP code modification in on-premises systems to interface and integration customization in cloud ERP systems, as well as emerging technological opportunities as a way for customers and key users to perform system customization. The study contributes by providing a clear understanding of given customization types and assisting ERP users and vendors in making customization decisions.}, language = {en} } @book{OPUS4-61194, title = {Landesrecht Brandenburg}, series = {Nomos Gesetze}, journal = {Nomos Gesetze}, editor = {von Br{\"u}nneck, Alexander and H{\"a}rtel, Ines and Dombert, Matthias}, edition = {27. Auflage, Stand: 15. August 2023}, publisher = {Nomos}, address = {Baden-Baden}, isbn = {978-3-7560-1043-1}, pages = {949}, year = {2024}, abstract = {Die topaktuelle 27. Auflage mit den wichtigsten Vorschriften des Landes Brandenburg f{\"u}r Studium, Referendariat und juristische Praxis ber{\"u}cksichtigt u.a. {\"A}nderungen des Landeswahlgesetzes, des Polizei- und des Pressegesetzes, des Juristenausbildungsgesetzes und der Juristenausbildungsordnung sowie des Schiedsstellen-, Schlichtungs- und G{\"u}testellengesetzes. Schaubilder verdeutlichen den Aufbau der Gerichtsbarkeit und der Verwaltung. Gliederungen und ein ausf{\"u}hrliches Register f{\"u}hren schnell zur gesuchten Norm, die durchg{\"a}ngige Satznummerierung gew{\"a}hrleistet pr{\"a}zise Zitierf{\"a}higkeit. Die Sammlung ist in Brandenburg zu den Staatsexamina zugelassen.}, language = {de} } @book{OPUS4-63303, title = {Trouble Every Day : Zum Schrecken des Allt{\"a}glichen}, editor = {Hordych, Anna and Ungelenk, Johannes}, publisher = {Brill Fink}, address = {Paderborn}, isbn = {978-3-8467-6721-4}, doi = {10.30965/9783846767214}, pages = {XXXII, 240}, year = {2024}, abstract = {Der Band ist den existenziellen Turbulenzen gewidmet, die dem Menschen nicht als katastrophales Ereignis widerfahren, sondern seinen unentrinnbaren Alltag formen. Egal ob Verschiebungen im universit{\"a}ren Selbstverst{\"a}ndnis (Vinken), Umgang mit geschlechtlicher Abweichung (Ungelenk; Hordych), Br{\"u}chen im Familiengef{\"u}ge (Brook; Goldmann), Kampf gegen Abholzung (Nixon), technische Total{\"u}berwachung im Alltag (S{\o}ilen/Maurer), narratologische Erkundungen von Zeit oder Gattung (Horst; Pierstorff; Reisener), stets erweist sich scheinbar banaler Alltag als erstaunlich produktiver Ausgangspunkt f{\"u}r gesellschaftliche, k{\"u}nstlerische und denkerische Prozesse. Das Gew{\"o}hnliche des Alltags ist nicht l{\"a}nger bloß statische Folie f{\"u}r einbrechende Ereignisse - es ist selbst als generatives Werden nobilitiert, das nun aber doppelb{\"o}dige Wertung annimmt: Alltag verliert im Zuge einer Philosophie der Moderne das Verl{\"a}ssliche (H{\"u}sch; Khurana), wird bedrohlich; zugleich bietet diese neue Unruhe des Alltags, sein "trouble", aber auch Chancen f{\"u}r Ver{\"a}nderung und feministisch-kritische oder k{\"u}nstlerische Intervention.}, language = {de} } @book{OPUS4-62873, title = {Motivation and emotion in learning and teaching across educational contexts}, editor = {Hagenauer, Gerda and Lazarides, Rebecca and J{\"a}rvenoja, Hanna}, publisher = {Routledge}, address = {London}, isbn = {978-1-032-30109-9}, doi = {10.4324/9781003303473}, pages = {292}, year = {2024}, abstract = {Motivation and Emotion in Learning and Teaching across Educational Contexts brings together current theoretical and methodological perspectives as well as examples of empirical implementations from leading international researchers focusing on the context specificity and situatedness of their core theories in motivation and emotion. The book is compiled of two main sections. Section I covers theoretical reflections and perspectives on the main theories on emotion and motivation in learning and teaching and their transferability across different educational contexts illustrated with empirical examples. Section II addresses the methodological reflections and perspectives on the methodology that is needed to address the complexity and context specificity of motivation and emotion. In addition to general reflections and perspectives regarding methodology, concrete empirical examples are provided. All cutting-edge chapters include current empirical studies on emotions and motivation in learning and teaching across different contexts (age groups, domains, countries, etc.) making them applicable and relevant to a wide range of contexts and settings. This high-quality volume with contributions from leading international experts will be an essential resource for researchers, students and teacher trainers interested in the vital role that motivation and emotions can play in education.}, language = {en} } @misc{OPUS4-63119, title = {Discursive Constructions of Corruption in Ancient Rome}, series = {Cultural History}, volume = {13}, journal = {Cultural History}, number = {1}, editor = {Carl{\`a}-Uhink, Filippo and Garc{\´i}a Morcillo, Marta}, publisher = {Edinburgh University Press}, address = {Edinburgh}, issn = {2045-290X}, doi = {10.3366/cult.2024.0293}, year = {2024}, language = {en} } @book{OPUS4-63603, title = {Plattformen : Grundlagen und Neuordnung des Rechts digitaler Plattformen}, editor = {Buchheim, Johannes and Kraetzig, Viktoria and Mendelsohn, Juliane and Steinr{\"o}tter, Bj{\"o}rn}, publisher = {Nomos}, address = {Baden-Baden}, isbn = {978-3-7560-1454-5}, doi = {10.5771/9783748919919}, pages = {263}, year = {2024}, abstract = {Digitale Plattformen pr{\"a}gen unsere Rechts- und Wirtschaftsordnung, die Freizeitgestaltung, das Informationsverhalten und im Aggregat die digitale {\"O}ffentlichkeit. Die damit verbundenen Rechtsfragen sind im Fluss und ber{\"u}hren alle juristischen Teildisziplinen. Der Tagungsband n{\"a}hert sich daher den Entwicklungen des Plattformrechts aus disziplin{\"u}bergreifendem Blickwinkel. Dieser Versuch einer {\"u}berspannenden Perspektive fokussiert vor allem auf die beiden „Großen" der j{\"u}ngsten Rechtsakte (DSA/DMA) unter dem besonderen Gesichtspunkt ihres Vollzugs: Wie kann man ein globales Ph{\"a}nomen wie Plattformen lokal und regional regulieren? Welche Rolle spielt der Schwarm der Vielen in der Effektivierung der neuen Regularien? Passen Regelungsmodelle wie das Urheberrecht zum Plattformph{\"a}nomen?}, language = {de} } @book{OPUS4-63885, title = {Dirty capitalism}, editor = {Rodrian-Pfennig, Margit and Oppenh{\"a}user, Holger and Gl{\"a}ser, Georg and Dannemann, Udo}, publisher = {Westf{\"a}lisches Dampfboot}, address = {M{\"u}nster}, isbn = {978-3-89691-092-9}, pages = {224}, year = {2024}, abstract = {Von Garzweiler bis zum Great Pacific Garbage Patch zeigt sich offenkundig: Die kapitalistische Vergesellschaftung ist dreckig. Umso mehr braucht kritische politisch-{\"o}konomische oder sozio-{\"o}konomische Bildung einen gesellschaftstheoretisch fundierten Kapitalismusbegriff. Der Ansatz des Dirty Capitalism leistet hierzu einen expliziten Beitrag. Er greift die vielf{\"a}ltige Kritik an Vorstellungen und analytischer Reichweite eines "reinen" Kapitalismus, wie sie z.B. auch im Ansatz des racial capitalism formuliert wird, auf und erweitert die Analyseperspektive {\"u}ber Klassenverh{\"a}ltnisse hinaus auf Rassismus, (Post-)Kolonialismus, Geschlechter- und Naturverh{\"a}ltnisse. Im Band wird das Konzept weiterentwickelt und als Zugang f{\"u}r die kritische politische Bildung und Politikdidaktik diskutiert und empirisch genutzt.}, language = {de} } @book{OPUS4-64256, title = {Zukunft - Zukunftswissen - Zukunfts{\"a}sthetik}, series = {Litterae}, volume = {259}, journal = {Litterae}, editor = {Lampart, Fabian and Moser, Natalie}, publisher = {Rombach Wissenschaft}, address = {Baden-Baden}, isbn = {978-3-96821-870-0}, doi = {10.5771/9783968218717}, pages = {292}, year = {2024}, abstract = {Das historische Erz{\"a}hlen ist im 19. Jahrhundert eine der prominentesten narrativen Formen. Aber es ist immer auch zukunftsaffin. In diesem Band wird diese Kehrseite der Vergangenheitsorientierung in historischer und systematischer Perspektive entlang folgender Leitfragen untersucht: Wie k{\"o}nnen Zukunftsreflexionen in Genres analytisch und konzeptionell gefasst werden, die nicht programmatisch dem Zukunftssujet verpflichtet sind? Wie ist das Wissen um Zukunft organisiert und {\"a}sthetisch strukturiert? Wie verh{\"a}lt sich eine solche implizite {\"a}sthetische Problematisierung von Zukunft gegen{\"u}ber expliziten Zukunftsmodellen der entstehenden Science Fiction?}, language = {de} } @book{OPUS4-62360, title = {Du sollst nicht essen}, editor = {Kollodzeiski, Ulrike and Hafner, Johann Evangelist}, publisher = {Ergon}, address = {Baden-Baden}, isbn = {978-3-98740-007-0}, doi = {10.5771/9783987400087}, pages = {172}, year = {2024}, abstract = {Zwar sind Menschen biologisch gesehen Allesesser, dennoch gibt es keine Gemeinschaft, die alle ihr zur Verf{\"u}gung stehenden Nahrungsmittel voll aussch{\"o}pft. Immer wird etwas nicht gegessen. Warum wir nicht essen, was wir nicht essen - das beleuchtet dieser Sammelband aus neuro-, ern{\"a}hrungs-, gesellschafts- und religionswissenschaftlicher Perspektive. Ein „religi{\"o}ser Nutriscore" gibt Auskunft {\"u}ber die wichtigsten Verzichtsregeln in Judentum, Christentum und Islam. Eine Fotostrecke veranschaulicht, wie bestimmte Speisen zu Festen und Feiertagen zu einem heiligen Essen werden. Nicht zuletzt werden Wege aufgezeigt, wie Menschen, die verschiedene Speiseregeln befolgen, dennoch zusammen essen k{\"o}nnen - inklusive Praxistest in der Unimensa.}, language = {de} } @book{OPUS4-63423, title = {Strafrecht in der alten Bundesrepublik 1949-1990. Besonderer Teil}, editor = {Popp, Andreas and Koch, Arnd and Steinberg, Georg}, edition = {1. Auflage}, publisher = {Nomos}, address = {Baden-Baden}, isbn = {978-3-7560-1270-1}, doi = {10.5771/9783748940210}, pages = {461}, year = {2024}, abstract = {W{\"a}hrend zur Geschichte des Strafrechts in der alten Bundesrepublik bislang lediglich {\"u}berblicksartige Gesamtdarstellungen und Monographien zu einzelnen Deliktsbereichen existierten, nimmt dieser Band einige pr{\"a}gnante Facetten des Besonderen Teils detailreich in den Blick und setzt damit das Projekt fort, das die Herausgeber 2020 mit dem bereits erschienenen Band zum Allgemeinen Teil begonnen haben. Auch hier interessieren die einzelnen Teilbereiche weniger dogmengeschichtlich als in ihrer Interaktion mit der Strafrechtswissenschaft, -praxis, -politik und gesellschaftlichen Ver{\"a}nderungen. Die individuellen Zug{\"a}nge, die die Autorinnen und Autoren hierzu gesucht haben, sollen in ihrer methodischen Vielfalt durchaus als Experiment verstanden werden.}, language = {de} }