The study investigates two different ways of guiding the addressee of an explanation - an explainee, through action demonstration: contrastive and non-contrastive. Their effect was tested on attention to specific action elements (goal) as well as on event memory. In an eye-tracking experiment, participants were shown different motion videos that were either contrastive or non-contrastive with respect to the segments of movement presentation. Given that everyday action demonstration is often multimodal, the stimuli were created with re- spect to their visual and verbal presentation. For visual presentation, a video combined two movements in a contrastive (e.g., Up-motion following a Down-motion) or non-contrastive way (e.g., two Up-motions following each other). For verbal presentation, each video was combined with a sequence of instruction descriptions in the form of negative (i.e., contrastive) or assertive (i.e., non-contrastive) guidance. It was found that a) attention to the event goal increased for this condition in the later time window, and b) participants’ recall of the event was facilitated when a visually contrastive motion was combined with a verbal contrast.
}}, author = {{Singh, Amit and Rohlfing, Katharina J.}}, booktitle = {{Proceedings of the Annual Meeting of the Cognitive Science Society 45 (45)}}, keywords = {{Attention, negation, contrastive guidance, eye-movements, action understanding, event representation}}, location = {{Sydney}}, publisher = {{Cognitive Science Society}}, title = {{{Contrastiveness in the context of action demonstration: an eye-tracking study on its effects on action perception and action recall}}}, year = {{2023}}, } @article{47420, author = {{Kürpick, Christian and Rasor, Anja and Scholtysik, Michel and Kühn, Arno and Koldewey, Christian and Dumitrescu, Roman}}, issn = {{2212-8271}}, journal = {{Procedia CIRP}}, keywords = {{General Medicine}}, pages = {{614--619}}, publisher = {{Elsevier BV}}, title = {{{An Integrative View of the Transformations towards Sustainability and Digitalization: The Case for a Dual Transformation}}}, doi = {{10.1016/j.procir.2023.02.155}}, volume = {{119}}, year = {{2023}}, } @inproceedings{47234, author = {{Sehlmeyer, Birte and Kampmann, Rebecca and Scheidemann, Claus and Hemsel, Tobias and Getzlaff, Mathias }}, booktitle = {{Frühjahrstagung 2023, Sektion Kondensierte Materie (SKM)}}, location = {{Dresden}}, title = {{{Burst Mode of Ultrasonic Resonant Oscillations for Stimulation and Destruction of Tumor Cells}}}, year = {{2023}}, } @inproceedings{47235, author = {{Kampmann, Rebecca and Sehlmeyer, Birte and Scheidemann, Claus and Hemsel, Tobias and Getzlaff, Mathias}}, booktitle = {{Frühjahrstagung 2023, Sektion Kondensierte Marterie (SKM)}}, location = {{Dresden}}, title = {{{Burst Mode Characteristics of an Ultrasonic Transducer for Treatment of Cancer Cells}}}, year = {{2023}}, } @unpublished{47532, abstract = {{In planar microcavities, the transverse-electric and transverse-magnetic (TE-TM) mode splitting of cavity photons arises due to their different penetration into the Bragg mirrors and can result in optical spin-orbit coupling (SOC). In this work, we find that in a liquid crystal (LC) microcavity filled with perovskite microplates, the pronounced TE-TM splitting gives rise to a strong SOC that leads to the spatial instability of microcavity polariton condensates under single-shot excitation. Spatially varying hole burning and mode competition occurs between polarization components leading to different condensate profiles from shot to shot. The single-shot polariton condensates become stable when the SOC vanishes as the TE and TM modes are spectrally well separated from each other, which can be achieved by application of an electric field to our LC microcavity with electrically tunable anisotropy. Our findings are well reproduced and traced back to their physical origin by our detailed numerical simulations. With the electrical manipulation our work reveals how the shot-to-shot spatial instability of spatial polariton profiles can be engineered in anisotropic microcavities at room temperature, which will benefit the development of stable polariton-based optoeletronic and light-emitting devices.}}, author = {{Gao, Ying and Ma, Xuekai and Zhai, Xiaokun and Xing, Chunzi and Gao, Meini and Dai, Haitao and Wu, Hao and Liu, Tong and Ren, Yuan and Wang, Xiao and Pan, Anlian and Hu, Wei and Schumacher, Stefan and Gao, Tingge}}, booktitle = {{arXiv:2305.01368}}, title = {{{Single-shot spatial instability and electric control of polariton condensates at room temperature}}}, year = {{2023}}, } @unpublished{47533, abstract = {{The control and active manipulation of spin-orbit coupling (SOC) in photonic systems is fundamental in the development of modern spin optics and topological photonic devices. Here, we demonstrate the control of an artificial Rashba-Dresselhaus (RD) SOC mediated by photochemical reactions in a microcavity filled with an organic single-crystal of photochromic phase-change character. Splitting of the circular polarization components of the optical modes induced by photonic RD SOC is observed experimentally in momentum space. By applying an ultraviolet light beam, we control the spatial molecular orientation through a photochemical reaction and with that we control the energies of the photonic modes. This way we realize a reversible conversion of spin-splitting of the optical modes with different energies, leading to an optically controlled switching between circularly and linearly polarized emission from our device. Our strategy of in situ and reversible engineering of SOC induced by a light field provides a promising approach to actively design and manipulate synthetic gauge fields towards future on-chip integration in photonics and topological photonic devices.}}, author = {{Liang, Qian and Ma, Xuekai and Ren, Jiahuan and Long, Teng and Gu, Chunling and An, Cunbin and Fu, Hongbing and Schumacher, Stefan and Liao, Qing}}, booktitle = {{arXiv:2309.07652}}, title = {{{Photochemical reaction enabling the engineering of photonic spin-orbit coupling in organic-crystal optical microcavities}}}, year = {{2023}}, } @unpublished{47531, abstract = {{Topological states have been widely investigated in different types of systems and lattices. In the present work, we report on topological edge states in double-wave (DW) chains, which can be described by a generalized Aubry-Andr\'e-Harper (AAH) model. For the specific system of a driven-dissipative exciton polariton system we show that in such potential chains, different types of edge states can form. For resonant optical excitation, we further find that the optical nonlinearity leads to a multistability of different edge states. This includes topologically protected edge states evolved directly from individual linear eigenstates as well as additional edge states that originate from nonlinearity-induced localization of bulk states. Extending the system into two dimensions (2D) by stacking horizontal DW chains in the vertical direction, we also create 2D multi-wave lattices. In such 2D lattices multiple Su-Schrieffer-Heeger (SSH) chains appear along the vertical direction. The combination of DW chains in the horizontal and SSH chains in the vertical direction then results in the formation of higher-order topological insulator corner states.}}, author = {{Schneider, Tobias and Gao, Wenlong and Zentgraf, Thomas and Schumacher, Stefan and Ma, Xuekai}}, booktitle = {{arXiv:2303.12593}}, title = {{{Topological edge and corner states in coupled wave lattices in nonlinear polariton condensates}}}, year = {{2023}}, } @unpublished{47529, abstract = {{Exceptional points (EPs) with their intriguing spectral topology have attracted considerable attention in a broad range of physical systems, with potential sensing applications driving much of the present research in this field. Here we theoretically demonstrate the realization of EPs in a system with significant nonlinearity, a non-equilibrium exciton-polariton condensate. With the possibility to control loss and gain and nonlinearity by optical means, this system allows for a comprehensive analysis of the interplay of nonlinearities (Kerr-type and saturable gain) and non-Hermiticity. Not only do we find that EPs can be intentionally shifted in parameter space by the saturable gain, we also observe intriguing rotations and intersections of Riemann surfaces, and find nonlinearity-enhanced sensing capabilities. Our results are quite general in nature and illustrate the potential of tailoring spectral topology and related phenomena in non-Hermitian systems by nonlinearity.}}, author = {{Wingenbach, Jan and Schumacher, Stefan and Ma, Xuekai}}, booktitle = {{arXiv:2305.04855}}, title = {{{Tweaking Spectral Topology and Exceptional Points by Nonlinearity in Non-Hermitian Polariton Systems}}}, year = {{2023}}, } @inproceedings{45577, author = {{Webersen, Yvonne}}, booktitle = {{Lernen, Lehren und Forschen in einer digital geprägten Welt. Gesellschaft für Didaktik der Chemie und Physik Jahrestagung in Aachen 2022}}, editor = {{van Vorst, Helena}}, pages = {{750--753}}, title = {{{Entwicklung und Evaluation einer NdN-Unterrichtsreihe zur Unterstützung von Lernpfaden}}}, year = {{2023}}, } @article{56172, author = {{Otto, Franziska and Kundisch, Heike}}, journal = {{Kölner Zeitschrift für Wirtschaft und Pädagogik}}, number = {{2023/1}}, pages = {{38--68}}, title = {{{Qualifizierungsbedarf des Bildungspersonals mit besonderem Fokus auf Selbstinszenierungspraktiken von Jugendlichen im Übergang Schule-Beruf}}}, volume = {{H. 74}}, year = {{2023}}, } @misc{47238, author = {{Leineweber, Jonas}}, booktitle = {{Bayrisches Jahrbuch für Volkskunde}}, title = {{{Rezension zu: Landgraf-Freudenreich, Verena: Ästhetik des Brauchtums. Eine empirische Betrachtung deutscher Schützenfestschriften, Bielefeld 2022. }}}, year = {{2023}}, } @inproceedings{42784, author = {{Homt, Martina and Wehde, Janis and Bloh, Bea}}, location = {{Essen}}, title = {{{Motivationsprofile zum Erwerb pädagogischen Wissens im Lehramtsstudium}}}, year = {{2023}}, } @inproceedings{44146, abstract = {{Many Android applications collect data from users. When they do, they must protect this collected data 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). App developers have limited tool support to reason about data protection throughout their app development process. Although many Android applications state a privacy policy, privacy policy compliance checks are currently manual, expensive, and prone to error. One of the major challenges in privacy audits is the significant gap between legal privacy statements (in English text) and technical measures that Android apps use to protect their user's privacy. In this thesis, we will explore to what extent we can use static analysis to answer important questions regarding data protection. Our main goal is to design a tool based approach that aids app developers and auditors in ensuring data protection in Android applications, based on automated static program analysis.}}, author = {{Khedkar, Mugdha}}, booktitle = {{2023 IEEE/ACM 45th International Conference on Software Engineering: Companion Proceedings (ICSE-Companion), Melbourne, Australia, 2023, pp. 197-199}}, keywords = {{static analysis, data protection and privacy, GDPR compliance}}, title = {{{Static Analysis for Android GDPR Compliance Assurance}}}, doi = {{10.1109/ICSE-Companion58688.2023.00054}}, year = {{2023}}, } @article{56200, abstract = {{