@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}}, } @misc{52465, author = {{Breckner, Anne}}, title = {{{All you need is love… Gedanken für das neue Jahr}}}, year = {{2024}}, } @article{52503, author = {{Kundisch, Heike and Kremer, H.-Hugo and Otto, Franziska}}, journal = {{QfI - Qualifizierung für Inklusion Online-Zeitschrift zur Forschung über Aus-, Fort- und Weiterbildung pädagogischer Fachkräfte}}, number = {{3}}, title = {{{Selbstinszenierungspraktiken als Weg zu Stärkenorientierung, Selbstbestimmung und Teilhabe – eine Kollegiale Weiterbildung für multiprofessionelle Akteursgruppen im (inklusiven) Übergang Schule-Beruf}}}, doi = {{ https://doi.org/10.21248/qfi.136}}, volume = {{5}}, year = {{2024}}, } @inproceedings{52504, author = {{Franke, Patrick}}, title = {{{Experimentelle Untersuchung und Modellierung des flüssigseitigen Stofftransports in Anstaupackungen}}}, year = {{2024}}, } @misc{51805, abstract = {{WeGA-WebApp release 4.9.0 Main features replace external Beacon service #451 update csLink to version v2 #450 Changelog A detailed changelog can be found at https://github.com/Edirom/WeGA-WebApp/wiki/Changelog Full Changelog: v4.8.1...v4.9.0 License This work is available under dual license: BSD 2-Clause and Creative Commons Attribution 4.0 International License (CC BY 4.0)  }}, author = {{Stadler, Peter and Schmidt, Jakob and Zheng, Xianghua and Ried, Dennis and Richts, Kristina and Schreiter, Solveig and Jakob, Charlene}}, publisher = {{LibreCat University}}, title = {{{WeGA-WebApp release 4.9.0}}}, doi = {{10.5281/ZENODO.10666485}}, year = {{2024}}, } @misc{52513, author = {{Stadler, Peter and Neubert, Anna Maria and Schreiter, Soveig and Obert, Salome and Ried, Dennis}}, publisher = {{LibreCat University}}, title = {{{Edirom/WeGA-ODD: v4.9.0}}}, doi = {{10.5281/ZENODO.10604058}}, year = {{2024}}, } @misc{52512, author = {{Stadler, Peter}}, publisher = {{LibreCat University}}, title = {{{WeGA data package v4.9.0}}}, doi = {{10.5281/ZENODO.10620019}}, year = {{2024}}, } @misc{52529, author = {{Kraft, Kerstin}}, publisher = {{Kraft, Kerstin, et al. “A Short Introduction to the Film Glove and Touch Studies.” Fashion Studies, vol. 5, no. 1, 2024, pp. 1-11, https://www.fashionstudies.ca/introduction-to-glove-and-touch-studies/, https://doi.org/10.38055/FS050108.}}, title = {{{“A Short Introduction to the Film Glove and Touch Studies.”}}}, year = {{2024}}, } @inbook{52511, abstract = {{Sind „soziale Medien“ überhaupt ein Thema für die Geschichtswissenschaft? Ja, denn die längere Geschichte der Digitalisierung, in der die „sozialen Medien“ einzuordnen sind, zählt bereits über 80 Jahre. Konrad Zuse und andere Ingenieure entwickelten seit 1941 die ersten Digitalcomputer, Unternehmer*innen, Wissenschaftler*innen und Staatenlenker*innen setzten diese seit den 1950er Jahren für ihre Zwecke ein, die Zivilgesellschaft adaptierte sie in den darauffolgenden Dekaden – all das prägte die sozio-digitale Landschaft der späteren „sozialen Medien“. Als unmittelbar „nach dem Boom“ etwa um 1970 zahlreiche Industriegesellschaften einen strukturellen Wandel in Wirtschaft, Gesellschaft und Politik durchlebten, war eine Antwort darauf die vermehrte Digitalisierung und Vernetzung. Daraus entwickelte sich die 1990er Jahre als markante Dekade von World Wide Web, Google und Chatdiensten. Die Entwicklung der „sozialen Medien“ ist also unter anderem in eine ökonomische und gesellschaftliche Entwicklung der Aufmerksamkeitsökonomie und in die längeren Veränderungen von Wirtschafts- und Gesellschaftsordnungen der Ausdifferenzierung und partiellen Individualisierung seit den 1960er Jahren einzuordnen. Dadurch lässt sich besser verstehen, welche Prämissen ihnen zugrunde lagen, welche Möglichkeitsräume und Probleme sich daraus ergaben und warum sie die heutige Öffentlichkeit in einer bestimmten Art und Weise dominieren – ohne sie jedoch zu determinieren.}}, author = {{Schmitt, Martin}}, booktitle = {{Soziale Medien – wie sie wurden, was sie sind }}, keywords = {{Digitalgeschichte, Soziale Medien, Technikgeschichte, World Wide Web, Digitalisierung}}, publisher = {{Bundeszentrale für politische Bildung}}, title = {{{Die Vorgeschichte der „sozialen Medien“. Über die Träume digitaler Vergemeinschaftung und freier Kommunikation}}}, year = {{2024}}, } @inbook{52538, abstract = {{Twitter ist jetzt X und befindet sich auf dem absteigenden Ast. Auf diesem Ast sitzt Facebook bereits seit längerem. Der Kurzvideodienst Vine, Vorgänger von TikTok, ist Geschichte. Und auch bei Google klingeln die Alarmglocken angesichts der „neuen“ Konkurrenz durch Microsoft und ChatGPT. Umso dringlicher wird also die Historisierung der „sozialen Medien“, das heißt, sie in ihren historischen Kontext einzuordnen und ihren Mythos zu entzaubern. Dabei wartet das Vorhaben mit einer doppelten Herausforderung auf: Erstens, dass es sich bei den Unternehmen der Branche und zweitens auch bei den dort gebildeten Gemeinschaften um recht flüchtige, wandelhaften Gestalten handelt. Scheitern und Wandel ist Teil der „sozialen Medien“ – und sei es nur in der schnellen Abfolge der Moden des „nächsten großen Dings“. Dementsprechend versucht dieser Beitrag mit einem systematischeren Ansatz als dem der gesellschaftlichen Selbstbeschreibung, die Entwicklung des sozio-digitalen Phänomens „soziale Medien“ in dessen Zeitkontext einzuordnen.}}, author = {{Schmitt, Martin}}, booktitle = {{Soziale Medien – wie sie wurden, was sie sind}}, keywords = {{Digitalgeschichte, Soziale Medien, Technikgeschichte, Wirtschaftsgeschichte, Digitalisierung, Twitter, Facebook, Meta}}, publisher = {{Bundeszentrale für politische Bildung}}, title = {{{Alles geht? Die jüngste Geschichte der „sozialen Medien“. Zwischen Wirtschaft und Gemeinschaft}}}, year = {{2024}}, } @inproceedings{52537, author = {{Gröger, Benjamin and Wiebicke, Felix and Koch, Ilja and Gude, Maik and Gilich, Julian and Meschut, Gerson}}, booktitle = {{24. Kolloquium: Gemeinsame Forschung in der Klebtechnik}}, location = {{Köln}}, title = {{{Experimentelle und numerische Analyse des Fließverhaltens von hochviskosen Wärmeleitstoffen im Fertigungsprozess}}}, year = {{2024}}, } @article{52541, abstract = {{AbstractWe conducted an investigation into the palladium‐catalyzed carbon‐sulfur cross‐coupling reaction involving a 2‐bromothiophene derivative and potassium thioacetate as a substitute for hydrogen sulfide. This investigation utilized kinetic and computational methods. We synthesized two palladium complexes supported by the bisphosphane ligands bis(diphenylphosphino)ferrocene (DPPF) and bis(diisopropylphosphino)ferrocene (DiPPF), as well as their tentative intermediates in the catalytic cycle. Reaction rates were measured and then compared to computational predictions.}}, author = {{Peschtrich, Sebastian and Schoch, Roland and Kuckling, Dirk and Paradies, Jan}}, issn = {{1434-193X}}, journal = {{European Journal of Organic Chemistry}}, keywords = {{Organic Chemistry, Physical and Theoretical Chemistry}}, number = {{8}}, publisher = {{Wiley}}, title = {{{A Comparative Kinetic and Computational Investigation of the Carbon‐Sulfur Cross Coupling of Potassium Thioacetate and 2‐Bromo Thiophene Using Palladium/Bisphosphine Complexes}}}, doi = {{10.1002/ejoc.202301207}}, volume = {{27}}, year = {{2024}}, } @article{52572, abstract = {{A series of substituted ferrocenyl boron derivatives was synthesized. The oxidation of the ferrocenyl unit resulted in a significant increase of the boron‐centered Lewis acidity. The neutral and cationic Lewis acids were characterized by NMR‐spectroscopy, crystal structure analysis and by computational methods. The new Lewis acids were then applied in the Meinwald rearrangement of epoxides, predominantly furnishing aldehydes as the kinetic products.}}, author = {{Köring, Laura and Birenheide, Bernhard and Krämer, Felix and Wenzel, Jonas O. and Schoch, Roland and Brehm, Martin and Breher, Frank and Paradies, Jan}}, issn = {{1434-1948}}, journal = {{European Journal of Inorganic Chemistry}}, keywords = {{Inorganic Chemistry}}, publisher = {{Wiley}}, title = {{{Synthesis of Ferrocenyl Boranes and their Application as Lewis Acids in Epoxide Rearrangements}}}, doi = {{10.1002/ejic.202400057}}, year = {{2024}}, } @article{52534, author = {{Bauch, Fabian and Dong, Chuan-Ding and Schumacher, Stefan}}, issn = {{1932-7447}}, journal = {{The Journal of Physical Chemistry C}}, keywords = {{Surfaces, Coatings and Films, Physical and Theoretical Chemistry, General Energy, Electronic, Optical and Magnetic Materials}}, number = {{8}}, pages = {{3525--3532}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Dynamics of Electron–Hole Coulomb Attractive Energy and Dipole Moment of Hot Excitons in Donor–Acceptor Polymers}}}, doi = {{10.1021/acs.jpcc.3c07513}}, volume = {{128}}, year = {{2024}}, } @inproceedings{52573, author = {{Dechert, Christopher and Kenig, Eugeny}}, location = {{Bochum}}, title = {{{Der Einfluss von Mikrostrukturen auf die Flüssigkeitsausbreitung in strukturierten Packungen}}}, year = {{2024}}, } @phdthesis{52576, author = {{Frank, Maximilian}}, isbn = {{978-3-8440-9444-2}}, pages = {{234}}, publisher = {{Shaker Verlag}}, title = {{{Simulationsgestützte Bestimmung und Optimierung der Mischgüte in der Einschneckenextrusion}}}, volume = {{2024,5}}, year = {{2024}}, } @inproceedings{52579, author = {{Hami Dindar, Iman and Lutters, Nicole and Kenig, Eugeny Y.}}, location = {{Ruhr-Universität Bochum}}, title = {{{Wässrige Glucosaminlösung als neues Lösungsmittel zur CO2-Abscheidung}}}, year = {{2024}}, } @article{51518, abstract = {{In applications of piezoelectric actuators and sensors, the dependability and particularly the reliability throughout their lifetime are vital to manufacturers and end-users and are enabled through condition-monitoring approaches. Existing approaches often utilize impedance measurements over a range of frequencies or velocity measurements and require additional equipment or sensors, such as a laser Doppler vibrometer. Furthermore, the non-negligible effects of varying operating conditions are often unconsidered. To minimize the need for additional sensors while maintaining the dependability of piezoelectric bending actuators irrespective of varying operating conditions, an online diagnostics approach is proposed. To this end, time- and frequency-domain features are extracted from monitored current signals to reflect hairline crack development in bending actuators. For validation of applicability, the presented analysis method was evaluated on piezoelectric bending actuators subjected to accelerated lifetime tests at varying voltage amplitudes and under external damping conditions. In the presence of a crack and due to a diminished stiffness, the resonance frequency decreases and the root-mean-square amplitude of the current signal simultaneously abruptly drops during the lifetime tests. Furthermore, the piezoelectric crack surfaces clapping is reflected in higher harmonics of the current signal. Thus, time-domain features and harmonics of the current signals are sufficient to diagnose hairline cracks in the actuators.}}, author = {{Aimiyekagbon, Osarenren Kennedy and Bender, Amelie and Hemsel, Tobias and Sextro, Walter}}, issn = {{2079-9292}}, journal = {{Electronics}}, keywords = {{piezoelectric transducer, self-sensing, fault detection, diagnostics, hairline crack, condition monitoring}}, number = {{3}}, publisher = {{MDPI AG}}, title = {{{Diagnostics of Piezoelectric Bending Actuators Subjected to Varying Operating Conditions}}}, doi = {{10.3390/electronics13030521}}, volume = {{13}}, year = {{2024}}, } @inbook{51364, author = {{Fuchs, Christian}}, booktitle = {{Digitalisierte Massenkommunikation und Verantwortung}}, editor = {{Litschka, Michael and Paganini, Claudia and Rademacher, Lars}}, isbn = {{9783748942801}}, pages = {{21--42}}, publisher = {{Nomos Verlagsgesellschaft mbH & Co. KG}}, title = {{{Grundlagen einer Ethik des Radikalen Digitalen Humanismus}}}, doi = {{10.5771/9783748942801}}, year = {{2024}}, } @article{52584, author = {{Rezat, Sebastian}}, journal = {{ZDM – Mathematics Education}}, publisher = {{Springer}}, title = {{{Research on curriculum resources in mathematics education: a survey of the field}}}, doi = {{10.1007/s11858-024-01559-x}}, year = {{2024}}, } @article{52587, author = {{Bodden, Eric and Pottebaum, Jens and Fockel, Markus and Gräßler, Iris}}, issn = {{1540-7993}}, journal = {{IEEE Security & Privacy}}, keywords = {{Law, Electrical and Electronic Engineering, Computer Networks and Communications}}, number = {{1}}, pages = {{69--72}}, publisher = {{Institute of Electrical and Electronics Engineers (IEEE)}}, title = {{{Evaluating Security Through Isolation and Defense in Depth}}}, doi = {{10.1109/msec.2023.3336028}}, volume = {{22}}, year = {{2024}}, } @misc{50208, author = {{Treder, Alexandra}}, booktitle = {{Forschungsportal für Spracherwerb und Migration (daz-portal)}}, title = {{{Alexandra Treder (Universität Paderborn) rezensiert: Döll, Marion & Michalak, Magdalena (2023): Deutsch als Zweitsprache und inklusive Bildung. [Deutsch als Zweitsprache – Positionen, Perspektiven, Potenziale, Bd. 3]. Münster: Waxmann, 142 Seiten. ISBN 978-3-8309-4711-0. }}}, volume = {{26}}, year = {{2024}}, } @book{52590, editor = {{Tatari, Muna and Husic, Ahmed}}, publisher = {{Brill (im Erscheinen)}}, title = {{{The Divine Attributes in Classical Islamic Thought and Con-temporary Islamic Theology}}}, year = {{2024}}, } @article{33461, abstract = {{Data-driven models for nonlinear dynamical systems based on approximating the underlying Koopman operator or generator have proven to be successful tools for forecasting, feature learning, state estimation, and control. It has become well known that the Koopman generators for control-affine systems also have affine dependence on the input, leading to convenient finite-dimensional bilinear approximations of the dynamics. Yet there are still two main obstacles that limit the scope of current approaches for approximating the Koopman generators of systems with actuation. First, the performance of existing methods depends heavily on the choice of basis functions over which the Koopman generator is to be approximated; and there is currently no universal way to choose them for systems that are not measure preserving. Secondly, if we do not observe the full state, we may not gain access to a sufficiently rich collection of such functions to describe the dynamics. This is because the commonly used method of forming time-delayed observables fails when there is actuation. To remedy these issues, we write the dynamics of observables governed by the Koopman generator as a bilinear hidden Markov model, and determine the model parameters using the expectation-maximization (EM) algorithm. The E-step involves a standard Kalman filter and smoother, while the M-step resembles control-affine dynamic mode decomposition for the generator. We demonstrate the performance of this method on three examples, including recovery of a finite-dimensional Koopman-invariant subspace for an actuated system with a slow manifold; estimation of Koopman eigenfunctions for the unforced Duffing equation; and model-predictive control of a fluidic pinball system based only on noisy observations of lift and drag.}}, author = {{Otto, Samuel E. and Peitz, Sebastian and Rowley, Clarence W.}}, journal = {{SIAM Journal on Applied Dynamical Systems}}, number = {{1}}, pages = {{885--923}}, publisher = {{SIAM}}, title = {{{Learning Bilinear Models of Actuated Koopman Generators from Partially-Observed Trajectories}}}, doi = {{10.1137/22M1523601}}, volume = {{23}}, year = {{2024}}, } @phdthesis{52611, abstract = {{Ultraschallsysteme für das Herstellen für Bond- und Schweißverbindungen in der Halbleiterfertigung zeigen auf Grund des Betriebes unter hohen Anregungsniveaus nichtlineare Materialeigenschaften. Dabei wirken unterschiedliche Einflussfaktoren auf die elektrischen Eigenschaften und die mechanischen Übertragungscharakteristiken der Ultraschallsysteme ein. Die Herausforderungen ein solches geprägtes System auszulegen oder effizient und zuverlässig zu betreiben, sind aufgrund der Nichtlinearitäten relativ groß. Da für die Beschreibung der nichtlinearen Materialbeziehungen nur wenige Modelle und kaum quantitative Angaben vorliegen, werden die komplexen Wechselwirkungen von Materialparametern, Geometrie und Vorspannung des Schwingers, Betriebsgrößen (Strom, Spannung), Temperatur und Prozesslasten durch systematische Untersuchungen von Keramiken und Langevin-Schwingern messtechnisch erfasst. Aus den Messergebnissen werden einerseits eindimensionale Modelle für Voruntersuchungen als auch vollständige Materialparametersätze für die Simulation mittels dreidimensionaler FE-Modelle hergeleitet. Eine Methodik zur Ermittlung der Materialparameter und ein auf iterativen Simulationen von FE-Modellen basierendes Werkzeug zur Simulation der komplexen Wechselwirkungen werden vorgestellt. Anhand eines exemplarischen Ultraschallsystems wird gezeigt, dass die Wirkungen temperaturbedingter Vorspannungsverluste, Änderungen des elektrischen Klemmenverhaltens und Amplituden- und Frequenzänderungen während des Betriebes bei großen Amplituden und Prozesslasten durch die Variationen des Keramikvolumens und der Keramikposition positiv beeinflusst werden können.}}, author = {{Dymel, Collin}}, isbn = {{9783844093964}}, keywords = {{Nichtlineares piezoelektrisches Verhalten, Dehnungsabhängigkeit, Vorspannungseinfluss, Temperatureinfluss, Lasteinfluss, Langevin-Schwinger, Ultraschallwandler, Ultraschallbonden, FEM-Modell, Ultraschallschweißen, BVD-Modell}}, pages = {{134}}, publisher = {{Shaker Verlag}}, title = {{{Modellbasierte Entwicklung von Ultraschallwandlern unter der Berücksichtigung von Nichtlinearitäten}}}, volume = {{16}}, year = {{2024}}, } @article{50726, abstract = {{Resistance spot‐welded joints containing press‐hardened steels are seen to exhibit a fracture mode called total dome failure, where the weld nugget completely separates from one steel sheet along the weld nugget edge. The effect of weld nugget shape and material property gradients is studied based on damage mechanics modeling and experimental validation to shed light on the underlying influencing factors. For a three‐steel‐sheet spot‐welded joint combining DP600 (1.5 mm)–CR1900T (1.0 mm)–CR1900T (1.0 mm), experiments under shear loading reveal that fracture occurs in the DP600 sheet along the weld nugget edge. In subsequent numerical simulation studies with damage mechanics models whose parameters are independently calibrated for every involved material configuration, three variations of the geometrical joint configuration are considered—an approximation of the real joint, one variation with a steeper weld nugget shape, and one variation with a less pronounced gradient between weld nugget material and heat‐affected zone material properties. The results of the finite‐element simulations show that a shallower weld nugget and a more pronounced material gradient lead to a faster increase of plastic strain at the edge of the weld nugget and promote the occurrence of total dome failure.}}, author = {{Schuster, Lilia and Olfert, Viktoria and Sherepenko, Oleksii and Fehrenbach, Clemens and Song, Shiyuan and Hein, David and Meschut, Gerson and Biro, Elliot and Münstermann, Sebastian}}, issn = {{1611-3683}}, journal = {{steel research international}}, keywords = {{Materials Chemistry, Metals and Alloys, Physical and Theoretical Chemistry, Condensed Matter Physics}}, publisher = {{Wiley}}, title = {{{Influences of Weld Nugget Shape and Material Gradient on the Shear Strength of Resistance Spot‐Welded Joints}}}, doi = {{10.1002/srin.202300530}}, year = {{2024}}, } @phdthesis{52501, author = {{ Hassel, Richard}}, pages = {{161}}, title = {{{Zur Abscheidung von Tröpfchen-Aerosolen in filternden Abscheidern}}}, doi = {{10.17619/UNIPB/1-1870}}, year = {{2024}}, } @article{52620, abstract = {{Der Beitrag stellt ein Qualifizierungsformat für (multi)professionelle Bildungsakteur*innen zur entwicklungsförderlichen Nutzung von Selbstinszenierungspraktiken vor. Die Konzeption und Entwicklung des Weiterbildungsformats ist im Rahmen eines Forschungs- und Entwicklungs­projekts für Jugendliche in ausbildungsvorbereitenden Bildungsgängen angesiedelt, die einen besonderen Förderbedarf im Zuge des Übergangs von der Schule in die Berufs- und Arbeitswelt aufweisen. Diese sollen durch offene und kreative Selbstdarstellungs- und Erhebungsformate dabei unterstützt werden, ihre Stärken zu erkennen, zu dokumentieren und sichtbar zu machen, sowie hierüber gleichsam für den Übergang Schule-Beruf gestärkt werden.   Wir stellen zunächst den Projektrahmen vor und schärfen in diesem Kontext den Zugang über eine Grundlegung zu Selbstinszenierung sowie deren Potenziale im Kontext der inklusiven Berufsbildung und zur Stärkung der Zielgruppe. Das im Projekt entwickelte Rahmenkonzept bietet eine Orientierung zur standort- respektive bildungsgangbezogenen Anpassung und stellt damit Herausforderungen und einen entsprechenden Qualifizierungsbedarf für Bildungsakteur­*innen heraus. Darauf basierend stellen wir die konzeptionellen Grundlagen, die methodische und inhaltliche Ausgestaltung zum Ansatz der ‚Kollegialen Weiterbildung‘ zur entwicklungsför­derlichen Nutzung von Selbstinszenierungspraktiken vor und adressieren u. a. das Zusammen­spiel von innovativer Entwicklung, Schärfung von Rollen und Kompetenzentwicklung der Bil­dungsakteur*innen. Abschließend diskutieren wir die konzeptionellen Entwicklungen und den Implementations- und Transferansatz. Abstract The article presents a qualification format for multi-professional actors in the educational context on the developmental use of 'Selbstinszenierungspraktiken' (which means a combination of practices for self-awareness, self-realisation and self-accep­tance in a process which we are developing in our project). The concept and development of the further education format is located within the framework of a research and development project for young people with wide-ranging needs in pre-vocational education units at the transition from school to work. They will be supported in recognizing, documenting and showing their strengths through open and creative self-expression and survey formats, as well as being strengthened for the transition from school to work. First, we present the project framework and clarify the approach by a theoretical grounding of ‚Selbstinszenierung‘ (similar to a combination of self-awareness, self-realisation and self-accep­tance) as well as its potentials in the context of inclusive vocational education by strengthening the target group. The developed framework provides a basis for the adaptation of the concept to a specific location or educational programme and highlights challenges and qualification needs for actors in the educational context. We present the conceptual basis, the methodologi­cal and content-related design of the collegial training approach on the developmental use of 'Selbstinszenierungspraktiken'. We address the interaction of innovative development, cla­rification of roles and competence development of actors in the educational context. Finally, we discuss the conceptual developments and the implementation and transfer approach.}}, author = {{Kundisch, Heike and Kremer, H.-Hugo and Otto, Franziska}}, issn = {{2699-2477}}, journal = {{QfI - Qualifizierung für Inklusion. Online-Zeitschrift zur Forschung über Aus-, Fort- und Weiterbildung pädagogischer Fachkräfte}}, keywords = {{General Medicine}}, number = {{3}}, publisher = {{University Library J. C. Senckenberg}}, title = {{{Selbstinszenierungspraktiken als Weg zu Stärkenorientierung, Selbstbestimmung und Teilhabe – eine Kollegiale Weiterbildung für multiprofessionelle Akteursgruppen im (inklusiven) Übergang Schule-Beruf}}}, doi = {{10.21248/qfi.136}}, volume = {{5}}, year = {{2024}}, } @article{52631, abstract = {{AbstractFootball is one of the most played sports in the world and kicking with adequate accuracy increases the likelihood of winning a competition. Although studies with different target-directed movements underline the role of distinctive cortical activity on superior accuracy, little is known about cortical dynamics associated with kicking. Mobile electroencephalography is a popular tool to investigate cortical modulations during movement, however, inherent and artefact-related pitfalls may obscure the reliability of functional sources and their activity. The purpose of this study was therefore to describe consistent cortical dynamics underlying target-directed pass-kicks based on test–retest reliability estimates. Eleven participants performed a target-directed kicking task at two different sessions within one week. Electroencephalography was recorded using a 65-channel mobile system and behavioural data were collected including motion range, acceleration and accuracy performance. Functional sources were identified using independent component analysis and clustered in two steps with the components of first and subsequently both sessions. Reliability estimates of event-related spectral perturbations were computed pixel-wise for participants contributing with components of both sessions. The parieto-occipital and frontal clusters were reproducible for the same majority of the sample at both sessions. Their activity showed consistent alpha desyhronization and theta sychnronisation patterns with substantial reliability estimates revealing visual and attentional demands in different phases of kicking. The findings of our study reveal prominent cortical demands during the execution of a target-directed kick which may be considered in practical implementations and provide promising academic prospects in the comprehension and investigation of cortical activity associated with target-directed movements.}}, author = {{Piskin, Daghan Yuksel and Büchel, Daniel and Lehmann, Tim and Baumeister, Jochen}}, issn = {{1871-4080}}, journal = {{Cognitive Neurodynamics}}, keywords = {{Cognitive Neuroscience}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Reliable electrocortical dynamics of target-directed pass-kicks}}}, doi = {{10.1007/s11571-024-10094-0}}, year = {{2024}}, } @misc{52639, author = {{Zink, Timm Florian}}, pages = {{142}}, title = {{{Untersuchung des Lösungsmitellseinflusses auf die Synthese von Manganoxid-Nanopartikeln in der Flammenspraypyrolyse}}}, year = {{2024}}, } @article{52233, abstract = {{ELDIRK methods are defined to have an Explicit Last stage in the general Butcher array of Diagonal Implicit Runge-Kutta methods, with the consequence, that no additional system of equations must be solved, compared to the embedded RK method. Two general formulations for second- and third-order ELDIRK methods have been obtained recently in Mahnken [21] with specific schemes, e.g. for the embedded implicit Euler method, the embedded trapezoidal-rule and the embedded Ellsiepen method. In the first part of this paper, we investigate some general stability characteristics of ELDIRK methods, and it will be shown that the above specific RK schemes are not A-stable. Therefore, in the second part, the above-mentioned general formulations are used for further stability investigations, with the aim to construct new second- and third-order ELDIRK methods which simultaneously are A-stable. Two numerical examples are concerned with the curing for a thermosetting material and phase-field RVE modeling for crystallinity and orientation. The numerical results confirm the theoretical results on convergence order and stability.}}, author = {{Mahnken, Rolf and Westermann, Hendrik}}, issn = {{0178-7675}}, journal = {{Computational Mechanics}}, keywords = {{Applied Mathematics, Computational Mathematics, Computational Theory and Mathematics, Mechanical Engineering, Ocean Engineering, Computational Mechanics}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Construction of A-stable explicit last-stage diagonal implicit Runge–Kutta (ELDIRK) methods}}}, doi = {{10.1007/s00466-024-02442-y}}, year = {{2024}}, } @inbook{51128, author = {{Domke, Marius and Fröhlich, Nadine and Eickelmann, Birgit and Pink, Sara}}, booktitle = {{Lehrkräftebildung in der digitalen Welt – zukunftsorientierte Forschungs- und Praxisperspektiven}}, editor = {{Herzig, B. and Eickelmann, Birgit and Schwabl, F. and Schulze, J. and Niemann, Jan}}, publisher = {{Waxmann Verlag GmbH}}, title = {{{Digitalisierungsbezogene Lehrkräftebildung als Gegenstand internationaler Schulleistungsstudien}}}, year = {{2024}}, } @article{52652, author = {{Herdramm, Henrike}}, journal = {{BloKK. Der Blog des Zentrums für Komparative Theologie und Kulturwissenschaften}}, keywords = {{Ideologiekritik, Tiertheologie, Tierethik}}, title = {{{Das Potenzial von Ideologiekritik im Religionsunterricht}}}, year = {{2024}}, } @misc{52663, abstract = {{Context Static analyses are well-established to aid in understanding bugs or vulnerabilities during the development process or in large-scale studies. A low false-positive rate is essential for the adaption in practice and for precise results of empirical studies. Unfortunately, static analyses tend to report where a vulnerability manifests rather than the fix location. This can cause presumed false positives or imprecise results. Method To address this problem, we designed an adaption of an existing static analysis algorithm that can distinguish between a manifestation and fix location, and reports error chains. An error chain represents at least two interconnected errors that occur successively, thus building the connection between the fix and manifestation location. We used our tool CogniCryptSUBS for a case study on 471 GitHub repositories, a performance benchmark to compare different analysis configurations, and conducted an expert interview. Result We found that 50 % of the projects with a report had at least one error chain. Our runtime benchmark demonstrated that our improvement caused only a minimal runtime overhead of less than 4 %. The results of our expert interview indicate that with our adapted version participants require fewer executions of the analysis. Conclusion Our results indicate that error chains occur frequently in real-world projects, and ignoring them can lead to imprecise evaluation results. The runtime benchmark indicates that our tool is a feasible and efficient solution for detecting error chains in real-world projects. Further, our results gave a hint that the usability of static analyses may benefit from supporting error chains.}}, author = {{Wickert, Anna-Katharina and Schlichtig, Michael and Vogel, Marvin and Winter, Lukas and Mezini, Mira and Bodden, Eric}}, keywords = {{Static analysis, error chains, false positive re- duction, empirical studies}}, title = {{{Supporting Error Chains in Static Analysis for Precise Evaluation Results and Enhanced Usability}}}, year = {{2024}}, } @inbook{51098, author = {{Labusch, Amelie and Eickelmann, Birgit and Casamassima, Gianna and Drossel, Kerstin and Gudmundsdottir, G.B. and Kazani, A. and Mifsud, L. and Symeonaki, M. and Teidla-Kunitsõn, G.}}, booktitle = {{Understanding the everyday digital lives of children and young people }}, editor = {{Holmarsdottir, H.B. and Seland, I. and Hyggen, C. and Roth, M.}}, pages = {{321--350}}, publisher = {{Palgrave Macmillan}}, title = {{{Children and young people’s ICT experiences in school education: Participatory research design to engage children and young people as experts in research}}}, doi = {{https://doi.org/10.1007/978-3-031-46929-9}}, year = {{2024}}, } @inbook{51096, author = {{Drossel, Kerstin and Oldak, Anna and Bette, Ricarda and Eickelmann, Birgit and Schreyer, P.}}, booktitle = {{Lehrkräftebildung in der digitalen Welt – zukunftsorientierte Forschungs- und Praxisperspektiven}}, editor = {{Herzig, B. and Eickelmann, Birgit and Schwabl, F. and Schulze, J. and Niemann, Jan}}, publisher = {{Waxmann Verlag GmbH}}, title = {{{Videoanalysen zu unterrichtlichen Lehr- und Lernprozessen unter den Bedingungen der Digitalität an organisational resilienten Schulen in Deutschland}}}, year = {{2024}}, } @misc{52684, abstract = {{This is the data set of the project Henze-Digital. It contains project specific authority files (e.g., persons, organizations, places) and editions (e.g., letters, documents).}}, author = {{Ried, Dennis and Capelle, Irmlind and Minetti, Elena and Tumat, Antje}}, publisher = {{LibreCat University}}, title = {{{HenDi-Data (data package) v3.1.0}}}, doi = {{10.5281/ZENODO.10839525}}, year = {{2024}}, } @misc{51677, abstract = {{This is the data set of the project Henze-Digital. It contains project specific authority files (e.g., persons, organizations, places) and editions (e.g., letters, documents).}}, author = {{Capelle, Irmlind and Minetti, Elena and Ried, Dennis and Tumat, Antje}}, publisher = {{Henze-Digital}}, title = {{{HenDi-Data (data package) v3.0.0}}}, doi = {{10.5281/ZENODO.10666370}}, year = {{2024}}, } @misc{52683, author = {{Ried, Dennis and Minetti, Elena and Capelle, Irmlind}}, publisher = {{LibreCat University}}, title = {{{HenDi-ODD v3.1.0}}}, doi = {{10.5281/ZENODO.10839530}}, year = {{2024}}, } @misc{52685, author = {{Ried, Dennis}}, publisher = {{LibreCat University}}, title = {{{HenDi-WebApp v3.1.0}}}, doi = {{10.5281/ZENODO.10839555}}, year = {{2024}}, } @unpublished{52691, abstract = {{We prove Feynman-Kac formulas for the semigroups generated by selfadjoint operators in a class containing Fr\"ohlich Hamiltonians known from solid state physics. The latter model multi-polarons, i.e., a fixed number of quantum mechanical electrons moving in a polarizable crystal and interacting with the quantized phonon field generated by the crystal's vibrational modes. Both the electrons and phonons can be confined to suitable open subsets of Euclidean space. We also include possibly very singular magnetic vector potentials and electrostatic potentials. Our Feynman-Kac formulas comprise Fock space operator-valued multiplicative functionals and can be applied to every vector in the underlying Hilbert space. In comparison to the renormalized Nelson model, for which analogous Feynman-Kac formulas are known, the analysis of the creation and annihilation terms in the multiplicative functionals requires novel ideas to overcome difficulties caused by the phonon dispersion relation being constant. Getting these terms under control and generalizing other construction steps so as to cover confined systems are the main achievements of this article.}}, author = {{Hinrichs, Benjamin and Matte, Oliver}}, booktitle = {{arXiv:2403.12147}}, title = {{{Feynman-Kac formulas for semigroups generated by multi-polaron Hamiltonians in magnetic fields and on general domains}}}, year = {{2024}}, }