@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}}, } @article{52346, abstract = {{Promising cathode materials for fluoride-ion batteries (FIBs) are 3d transition metal containing oxides with Ruddlesden-Popper-type structure. So far, multi-elemental compositions were not investigated, but could alternate electrochemical performance similar to what has been found for cathode materials for lithium-ion batteries. Within this study, we investigate RP type La2Ni0.75Co0.25O4.08 as an intercalation-based active cathode material for all-solid-state FIBs. We determine the structural changes of La2Ni0.75Co0.25O4.08 during fluoride intercalation / de-intercalation by ex-situ X-ray diffraction, which showed that F- insertion leads to transformation of the parent phase to three different phases. Changes in Ni and Co oxidation states and coordination environment were examined by X-ray absorption spectroscopy and magnetic measurements in order to understand the complex reaction behaviour of the phases in detail, showing that the two transition metals behave differently in the charging and discharging process. Under optimized operating conditions, a cycle life of 120 cycles at a critical cut-off capacity of 40 mAh g-1 against Pb/PbF2 was obtained, which is one of the highest observed for intercalation electrode materials in FIBs so far. The average Coulombic efficiencies ranged from 85% to 90%. Thus, La2Ni0.75Co0.25O4.08 could be a promising candidate for cycling-stable high-energy cathode materials for all-solid-state FIBs}}, author = {{Vanita, Vanita and Waidha, Aamir Iqbal and Vasala, Sami and Puphal, Pascal and Schoch, Roland and Glatzel, Pieter and Bauer, Matthias and Clemens, Oliver}}, issn = {{2050-7488}}, journal = {{Journal of Materials Chemistry A}}, keywords = {{General Materials Science, Renewable Energy, Sustainability and the Environment, General Chemistry}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type Cathode for all-solid-state Fluoride Ion Batteries}}}, doi = {{10.1039/d4ta00704b}}, year = {{2024}}, } @article{52357, author = {{Beimdiek, Janis and Schmid, Hans-Joachim}}, issn = {{2073-4433}}, journal = {{Atmosphere}}, keywords = {{surrogate aerosols, indoor air cleaners, ultra-fine particles, COVID-19, test method, field experiments: clean air delivery rate}}, number = {{3}}, publisher = {{Multidisciplinary Digital Publishing Institute (MDPI)}}, title = {{{Evaluation of Surrogate Aerosol Experiments to Predict Spreading and Removal of Virus-Laden Aerosols}}}, doi = {{ 10.3390/atmos15030305}}, volume = {{15}}, year = {{2024}}, } @inproceedings{52359, author = {{Chudalla, Nick and Schmolke, Tobias and Meschut, Gerson and Spohr, Sebastian and Eckstein, Lutz and Brunner-Schwer, Christian and Rethmeier, Michael and Nothelfer-Richter, Rolf and Hilt, MIchael}}, booktitle = {{24. Kolloquium: Gemeinsame Forschung in der Klebtechnik}}, location = {{Köln}}, title = {{{Konzeptentwicklung für ein Stahlbatteriegehäuse unter besonderer Berücksichtigung der Fügetechnik und des Korrosionsschutzes}}}, year = {{2024}}, } @article{52097, author = {{Hami Dindar, Iman and Mirzaei, Mona and Baumhögger, Elmar and Lutters, Nicole and Kenig, Eugeny Y.}}, issn = {{0021-9568}}, journal = {{Journal of Chemical & Engineering Data}}, keywords = {{General Chemical Engineering, General Chemistry}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Experimental and Theoretical Investigation of CO2 Absorption in Aqueous Solution of Glucosamine: Material Property and Equilibrium Data}}}, doi = {{10.1021/acs.jced.3c00554}}, year = {{2024}}, } @article{52226, author = {{Weber, Mike and Lutters, Nicole and Kenig, Eugeny Y.}}, issn = {{0888-5885}}, journal = {{Industrial & Engineering Chemistry Research}}, keywords = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Dynamics of an Absorption/Desorption Plant: Experimental Study and Model Validation}}}, doi = {{10.1021/acs.iecr.3c03262}}, year = {{2024}}, } @phdthesis{52404, author = {{Flachmann, Felix}}, isbn = {{978-3-8440-9432-9}}, pages = {{140}}, publisher = {{Shaker Verlag}}, title = {{{Untersuchung des Füllverhaltens holzfaserverstärkter Kunststoffe (WPC) mit hohen Füllstoffgehalten}}}, volume = {{Band 4}}, year = {{2024}}, } @inproceedings{52403, author = {{Al Trjman, Mohamad and Meschut, Gerson and Salten, Alexander Heinrich Johannes and Kenig, Eugeny Y.}}, location = {{Köln}}, title = {{{Methodenentwicklung zur Simulation des Viscous Fingering in Klebverbindungen von stahlintensiven Mischbaustrukturen}}}, year = {{2024}}, } @article{52229, author = {{Bruns, Bastian and Gross, Michel and Grünewald, Marcus and Bertsch, Valentin and Riese, Julia}}, issn = {{0959-6526}}, journal = {{Journal of Cleaner Production}}, keywords = {{Industrial and Manufacturing Engineering, Strategy and Management, General Environmental Science, Renewable Energy, Sustainability and the Environment, Building and Construction}}, publisher = {{Elsevier BV}}, title = {{{A multi-step framework for the design of a flexible power-to-methane process}}}, doi = {{10.1016/j.jclepro.2024.141434}}, year = {{2024}}, } @article{52388, author = {{Riese, Julia and Fasel, Henrik and Pannok, Maik and Lier, Stefan}}, issn = {{2352-5509}}, journal = {{Sustainable Production and Consumption}}, keywords = {{Industrial and Manufacturing Engineering, Renewable Energy, Sustainability and the Environment, Environmental Chemistry, Environmental Engineering}}, publisher = {{Elsevier BV}}, title = {{{Decentralized production concepts for bio-based polymers - implications for supply chains, costs, and the carbon footprint}}}, doi = {{10.1016/j.spc.2024.03.001}}, year = {{2024}}, } @article{51122, author = {{Al-Lami, Abbas J.S. and Kenig, Eugeny Y.}}, issn = {{2214-157X}}, journal = {{Case Studies in Thermal Engineering}}, keywords = {{Fluid Flow and Transfer Processes, Engineering (miscellaneous)}}, publisher = {{Elsevier BV}}, title = {{{New pressure drop and heat transfer correlations for turbulent forced convection in internally channeled tube heat exchanger ducts}}}, doi = {{10.1016/j.csite.2024.103993}}, year = {{2024}}, }