@article{52200, author = {{Ade, Larissa and Breiwe, René and Dehmel, Lukas and Wolf, Karsten D. and Rummler, Klaus and Dander, Valentin and Grünberger, Nina and Schiefner-Rohs, Mandy}}, journal = {{Zeitschrift MedienPädagogik}}, title = {{{Editorial: ENT | GRENZ | UNGEN (in) der Medienpädagogik}}}, doi = {{https://doi.org/10.21240/mpaed/53/2024.02.26.X}}, volume = {{53}}, year = {{2024}}, } @article{52206, author = {{Seutter, Janina and Müller, Michelle and Müller, Stefanie Jutta Marianne and Kundisch, Dennis}}, journal = {{Internet Research}}, title = {{{Moment or movement – the heterogeneous impact of the Black Lives Matter movement on personal and societal charitable crowdfunding campaigns}}}, year = {{2024}}, } @inproceedings{52213, author = {{Beule, Felix and Sander, Sascha and Meschut, Gerson and Damm, Jannis and Kasper, Yann and Albiez, Matthias and Kötz, Fabian and Matzenmiller, Anton}}, booktitle = {{24. Kolloquium: Gemeinsame Forschung in der Klebtechnik}}, location = {{Köln}}, title = {{{Methodenentwicklung zur rechnerischen Auslegung geklebter Stahlverbindungen unter Alterungsbeanspruchung im Stahl- und Anlagenbau}}}, year = {{2024}}, } @inproceedings{52211, author = {{Beule, Felix and Teutenberg, Dominik and Meschut, Gerson}}, booktitle = {{DECHEMA-Workshop für Klebstoffanwender: Simulation von Klebverbindungen}}, location = {{Köln}}, title = {{{Klebstoffmodell - Parameteridentifikation, Verifikation und Validierung für den Lastfall Crash}}}, year = {{2024}}, } @inproceedings{52214, author = {{Beule, Felix and Teutenberg, Dominik and Meschut, Gerson and Schmelzle, Lars and Possart, Gunnar and Mergheim, Julia and Steinmann, Paul}}, location = {{Köln}}, title = {{{Methodenentwicklung zur Simulation von hyperelastischen Klebverbindungen unter Crashbelastung}}}, year = {{2024}}, } @article{52217, abstract = {{AbstractPolycarbonate (PC) is an amorphous polymer that is an extremely robust material with a high tenacity, and thus suitable for a lightweight construction with glass‐like transparency. Due to these advantageous properties, PC is often used in industry for example in medical devices, automotive headlamps, sporting equipment, electronics, and a variety of other products. PC is often subjected to uniaxial and biaxial loading conditions. Therefore, reliable material models have to take into account the various resulting experimental effects. For those reasons, we investigate PC specimens under uniaxial and biaxial loading by using different stretch rates and loading scenarios. In addition to that, we propose methods for optical measurement of local stretches to obtain the approximated local true stress. In future work, the displacement fields and the resulting reaction forces will be used for parameter identification of constitutive equations.}}, author = {{Hamdoun, Ayoub and Mahnken, Rolf}}, issn = {{1617-7061}}, journal = {{PAMM}}, keywords = {{Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics}}, publisher = {{Wiley}}, title = {{{Experimental investigations of uniaxial and biaxial cold stretching within PC‐films and bars using optical measurements}}}, doi = {{10.1002/pamm.202300114}}, year = {{2024}}, } @article{52218, author = {{Lenz, Peter and Mahnken, Rolf}}, issn = {{0020-7683}}, journal = {{International Journal of Solids and Structures}}, keywords = {{Applied Mathematics, Mechanical Engineering, Mechanics of Materials, Condensed Matter Physics, General Materials Science, Modeling and Simulation}}, publisher = {{Elsevier BV}}, title = {{{Multiscale simulation of polymer curing of composites combined mean-field homogenisation methods at large strains}}}, doi = {{10.1016/j.ijsolstr.2023.112642}}, volume = {{290}}, year = {{2024}}, } @inproceedings{52215, author = {{Carillo Beber, Vinicius and Fernandes, Pedro and Nagel, Christof and Köster, Christian and Matzenmiller, Anton and Hecht, Mathias and Baumgartner, Jörg and Melz, Tobias and Tews, Karina and Çavdar, Serkan and Meschut, Gerson}}, booktitle = {{24. Kolloquium: Gemeinsame Forschung in der Klebtechnik}}, location = {{Köln}}, title = {{{Lebensdauerprognose für Stahlklebverbindungen bei multiaxialer Belastung mit Phasenverschiebung, veränderlicher Mittelspannung und variablen Amplituden}}}, year = {{2024}}, } @inproceedings{52212, author = {{Tews, Karina and Teutenberg, Dominik and Meschut, Gerson and Buczek, Moritz and Duffe, Tobias and Kullmer, Gunter}}, booktitle = {{24. Kolloquium: Gemeinsame Forschung in der Klebtechnik}}, location = {{Köln}}, title = {{{Bruchmechanisches Schnittebenenkonzept zur lebensdauergerechten Auslegung von hyperelastischen Klebverbindungen bei multiaxialen und variablen Belastungsamplituden}}}, year = {{2024}}, } @inproceedings{52216, author = {{Tews, Karina and Teutenberg, Dominik and Meschut, Gerson}}, location = {{Köln}}, title = {{{Mechanisches Verhalten: Charakterisierung von Klebstoffen}}}, year = {{2024}}, } @inbook{52222, author = {{Meier, Jana and Vogelsang, Christoph and Rotärmel, Tanja}}, booktitle = {{Das Berufsfeldpraktikum als Professionalisierungselement. Grundlagen, Konzepte, Beispiele für das Lehramtsstudium}}, editor = {{Schöning, Anke and Heer, Michaela and Pahl, Michelle and Diehr, Frank and Parusel, Eva and Tinnefeld, Anja and Walke, Jutta}}, pages = {{310--324}}, publisher = {{Klinkhardt}}, title = {{{"Das Berufsfeldpraktikum empfinde ich als nicht notwendig im Studium" - Evaluationsergebnisse zum Berufsfeldpraktikum aus Sicht von Lehramtsstudierenden}}}, doi = {{10.35468/6068-31}}, year = {{2024}}, } @article{51356, abstract = {{Abstract Lithium niobate has emerged as a promising platform for integrated quantum optics, enabling efficient generation, manipulation, and detection of quantum states of light. However, integrating single-photon detectors requires cryogenic operating temperatures, since the best performing detectors are based on narrow superconducting wires. While previous studies have demonstrated the operation of quantum light sources and electro-optic modulators in LiNbO3 at cryogenic temperatures, the thermal transition between room temperature and cryogenic conditions introduces additional effects that can significantly influence device performance. In this paper, we investigate the generation of pyroelectric charges and their impact on the optical properties of lithium niobate waveguides when changing from room temperature to 25 K, and vice versa. We measure the generated pyroelectric charge flow and correlate this with fast changes in the birefringence acquired through the Sénarmont-method. Both electrical and optical influence of the pyroelectric effect occur predominantly at temperatures above 100 K.}}, author = {{Thiele, Frederik and Hummel, Thomas and Lange, Nina Amelie and Dreher, Felix and Protte, Maximilian and Bruch, Felix vom and Lengeling, Sebastian and Herrmann, Harald and Eigner, Christof and Silberhorn, Christine and Bartley, Tim}}, issn = {{2633-4356}}, journal = {{Materials for Quantum Technology}}, keywords = {{General Earth and Planetary Sciences, General Environmental Science}}, number = {{1}}, publisher = {{IOP Publishing}}, title = {{{Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics}}}, doi = {{10.1088/2633-4356/ad207d}}, volume = {{4}}, year = {{2024}}, } @inbook{52252, author = {{Tophinke, Doris and Dübbert, Alexander}}, booktitle = {{Konstruktionsgrammatik X. Textsorten und Textmuster als Konstruktionen?}}, editor = {{Stumpf, Sören and Stein, Stephan}}, isbn = {{978-3-95809-171-9}}, pages = {{89--112}}, publisher = {{Stauffenburg}}, title = {{{„4 THe BoYZ“ – Widmungen im Szene-Graffiti aus konstruktionsgrammatischer Perspektive. Die multimodale Relator-Konstruktion als grammatische Musterbildung im Horizont des Textes}}}, year = {{2024}}, } @inbook{51130, author = {{Eickelmann, Birgit and Barbovschi, M. and Holmarsdottir, H.B. and Parsanoglou, D. and Sisask, M. and Labusch, Amelie}}, booktitle = {{Understanding the everyday digital lives of children and young people}}, editor = {{Holmarsdottir, H.B. and Seland, I. and Hyggen, C. and Roth, M.}}, publisher = {{Palgrave Macmillan}}, title = {{{Perspectives of children and young people on their education as preparing for their future in the digital age: In-depth qualitative study in five European countries.}}}, doi = {{10.1007/978-3-031-46929-9}}, year = {{2024}}, } @misc{52318, author = {{Dorociak, Svitlana}}, title = {{{Implementierung eines Algorithmus zur motivbasierten Schnitt-Sparsifizierung}}}, year = {{2024}}, } @inproceedings{52235, abstract = {{Android applications collecting data from users must protect it according to the current legal frameworks. Such data protection has become even more important since the European Union rolled out the General Data Protection Regulation (GDPR). Since app developers are not legal experts, they find it difficult to write privacy-aware source code. Moreover, they have limited tool support to reason about data protection throughout their app development process. This paper motivates the need for a static analysis approach to diagnose and explain data protection in Android apps. The analysis will recognize personal data sources in the source code, and aims to further examine the data flow originating from these sources. App developers can then address key questions about data manipulation, derived data, and the presence of technical measures. Despite challenges, we explore to what extent one can realize this analysis through static taint analysis, a common method for identifying security vulnerabilities. This is a first step towards designing a tool-based approach that aids app developers and assessors in ensuring data protection in Android apps, based on automated static program analysis. }}, author = {{Khedkar, Mugdha and Bodden, Eric}}, booktitle = {{Proceedings of the 9th International Conference on Mobile Software Engineering and Systems}}, keywords = {{static program analysis, data protection and privacy, GDPR compliance}}, location = {{Lisbon, Portugal}}, title = {{{Toward an Android Static Analysis Approach for Data Protection}}}, year = {{2024}}, } @article{52328, abstract = {{In der Professionalisierung von Lehrkräften ist die Selbst-reflexion eine wesentliche Voraussetzung, da sie zentral für die Weiterentwicklung der eigenen Kompetenzen ist. Daraus ergibt sich die Notwendigkeit, bereits in der ersten Phase der Lehrkräftebildung die Selbstreflexion und die Weiterentwicklungsorientierung zu fördern. Hierzu sind auf Grund des sozialen Settings gezielte reflexionsorientierte Workshops chancenreich. Um die Effekte von reflexionsorientierten Workshops und dabei den Zusammenhang zwischen der Selbst-reflexion und der Weiterentwicklungsorientierung zu überprüfen, wurden anhand einer Stichprobe von N = 646 Lehramtsstudierenden die Entwicklung der Selbst-reflexion und Weiterentwicklungsorientierung beim Besuch von Workshops zu überfachlichen Kompetenzen untersucht. Die Datenerhebung erfolgte vor, direkt nach und erneut vier bis sechs Wochen nach den reflexionsorientierten Workshops mittels eines Fragebogens. Durch Varianzanalysen können in Bezug auf die Selbst-reflexion direkt nach den Workshops signifikante Effekte sowie eine konstante Ausprägung vier bis sechs Wochen später nachgewiesen werden. Weiterhin konnte ein signifikanter Anstieg bei der Weiterentwicklungsorientierung über die drei Messzeitpunkte verzeichnet werden. Ebenso zeigte sich ein positiver Effekt der Selbstreflexion auf den Anstieg der Weiterentwicklungsorientierung.}}, author = {{Kleine, Sabrina M and Sohlau, Sylvia and Seifert, Andreas and Buhl, Heike M.}}, journal = {{Herausforderung Lehrer*innenbildung - Zeitschrift zur Konzeption, Gestaltung und Diskussion}}, number = {{1}}, title = {{{Förderung der Selbstreflexion und Weiterentwicklungsorientierung durch reflexionsorientierte Workshops im Lehramtsstudium}}}, doi = {{10.11576/HLZ-6392}}, volume = {{7}}, year = {{2024}}, } @article{52332, author = {{Intveen, Julie}}, journal = {{MEIN FACH - Englisch Sek II}}, title = {{{Commonwealth Connections. Discovering global dynamics through Model UN discourse}}}, volume = {{1}}, year = {{2024}}, } @article{52333, author = {{Intveen, Julie}}, journal = {{MEIN FACH - Englisch Sek II}}, title = {{{The Commonwealth Games. Hosting the games – creating pitches}}}, volume = {{1}}, year = {{2024}}, } @unpublished{52342, abstract = {{We introduce the concept of a k-token signed graph and study some of its combinatorial and algebraic properties. We prove that two switching isomorphic signed graphs have switching isomorphic token graphs. Moreover, we show that the Laplacian spectrum of a balanced signed graph is contained in the Laplacian spectra of its k-token signed graph. Besides, we introduce and study the unbalance level of a signed graph, which is a new parameter that measures how far a signed graph is from being balanced. Moreover, we study the relation between the frustration index and the unbalance level of signed graphs and their token signed graphs. }}, author = {{Dalfó, C. and Fiol, M. A. and Steffen, Eckhard}}, booktitle = {{arXiv:2403.02924}}, title = {{{On token signed graphs}}}, year = {{2024}}, }