@article{58114, author = {{Fuchs, Christian}}, journal = {{Philosophy and Social Criticism}}, number = {{10}}, pages = {{1703--1729}}, title = {{{Antonio Negri, Spinoza, Marx, and Digital Capitalism. }}}, doi = {{10.1177/01914537241308108 }}, volume = {{51}}, year = {{2025}}, } @article{57531, author = {{Alpsancar, Suzana and Buhl, Heike M. and Matzner, Tobias and Scharlau, Ingrid}}, journal = {{AI and Ethics}}, pages = {{3015–3033}}, publisher = {{Springer}}, title = {{{Explanation needs and ethical demands: unpacking the instrumental value of XAI}}}, doi = {{https://doi.org/10.1007/s43681-024-00622-3}}, volume = {{5}}, year = {{2025}}, } @inproceedings{62344, abstract = {{kein Abstract vorhanden}}, author = {{Decuypere, Mathias and Hartong, Sigrid and Joecks, Lucas and Knox, Jeremy and Ortegón, Carlos and Schmidt, Rebecca and Williamson, Ben}}, location = {{Zürich}}, publisher = {{LibreCat University}}, title = {{{Critical Edtech Studies. Defining the field; envisioning the future. 2025 Position statement after the inaugural edition of the European Conference on Critical Edtech Studies (ECCES).}}}, doi = {{10.5281/ZENODO.17672486}}, year = {{2025}}, } @inproceedings{62688, author = {{Gräßler, Iris and Pottebaum, Jens and Rarbach, Sven}}, booktitle = {{The 11th World Sustainability Forum (WSF11)}}, location = {{Barcelona}}, publisher = {{MDPI}}, title = {{{Potentials of Product Lifecycle Management to Enhance Circular Economy}}}, doi = {{10.3390/proceedings2025131047}}, year = {{2025}}, } @inproceedings{62714, abstract = {{Die fortschreitende Digitalisierung bringt große Herausforderungen für die Aus- und Weiterbildung von Lehrkräften mit sich. Während angehende Lehrkräfte bereits von neuen Entwicklungen in der Ausbildung profitieren, sind viele aktive Lehrkräfte bislang nicht ausreichend auf die digitalen Möglichkeiten im Unterricht vorbereitet. Der Kompetenzverbund lernen:digital setzt genau hier an und unterstützt gezielt Lehrkräfte beim Erwerb digitalisierungsbezogener Kompetenzen. Im Rahmen des Verbundprojekts ComeMINT wurde unter anderem ein Online-Selbstlernkurs entwickelt, der sich mit dem Einsatz digitaler Medien im Physikunterricht befasst. Grundlage des Kurses bilden zum einen eine Bedürfnisanalyse unter praktizierenden Physiklehrkräften und zum anderen bereits bestehende Materialien aus der Lehrkräfteausbildung. Der Kurs vermittelt grundlegende Kompetenzen im Umgang mit physikspezifischen digitalen Medien, wie zum Beispiel digitaler Messwerterfassung, Augmented Reality oder Simulationen. In diesem Beitrag werden die Entwicklung und die Inhalte des Selbstlernkurses skizziert, sowie die nachhaltige Aufbereitung der Materialien zur Nachnutzung dargestellt.}}, author = {{Weiler, David Christoph and Burde, Jan-Philipp and Costan, Kasim and Gieshoff, Rike Isabel and Kulgemeyer, Christoph and Lässer, Armin and Plicht, Katja and Riese, Josef and Schubatzky, Thomas}}, booktitle = {{PhyDid B - Didaktik Der Physik - Beiträge Zur DPG-Frühjahrstagung}}, location = {{Göttingen}}, pages = {{71--78}}, title = {{{Online-Selbstlernkurs zu digitalen Medien im Physikunterricht}}}, year = {{2025}}, } @inproceedings{62738, abstract = {{Vulnerability disclosures are necessary to improve the security of our digital ecosystem. However, they can also be challenging for researchers: it may be hard to find out who the affected parties even are, or how to contact them. Researchers may be ignored or face adversity when disclosing vulnerabilities. We investigate researchers' experiences with vulnerability disclosures, extract best practices, and make recommendations for researchers, institutions that employ them, industry, and regulators to enable effective vulnerability disclosures.}}, author = {{Sri Ramulu, Harshini and Rotthaler, Anna Lena and Rossel, Jost and Gonzalez Rodriguez, Rachel and Wermke, Dominik and Fahl, Sascha and Kohno, Tadayoshi and Somorovsky, Juraj and Acar, Yasemin}}, booktitle = {{Proceedings of the 2025 ACM SIGSAC Conference on Computer and Communications Security}}, keywords = {{software vulnerabilities, vulnerability disclosure, security research}}, publisher = {{ACM}}, title = {{{Poster: Computer Security Researchers' Experiences with Vulnerability Disclosures}}}, doi = {{10.1145/3719027.3760723}}, year = {{2025}}, } @article{62749, abstract = {{Coherent Raman scattering techniques as coherent anti-Stokes Raman scattering (CARS), offer significant advantages in terms of pixel dwell times and speed as compared to spontaneous Raman scattering for investigations of crystalline materials. However, the spectral information in CARS is often hampered by the presence of a nonresonant contribution to the scattering process that shifts and distorts the Raman peaks. In this work, we apply a method to obtain nonresonant background-free spectra based on time-delayed, broadband CARS (TD-BCARS) using an intrapulse excitation scheme. In particular, this method can measure the phononic dephasing times across the full phonon spectrum at once. We test the methodology on amorphous SiO2 (glass), which is used to characterize the setup-specific and material-independent response times, and then apply TD-BCARS to the analysis of single crystals of diamond and ferroelectrics of potassium titanyl phosphate (KTP) and potassium titanyl arsenate (KTA). For diamond, we determine a dephasing time of 𝜏=7.81 ps for the single 𝑠⁢𝑝3 peak.}}, author = {{Hempel, F. and Rüsing, Michael and Vernuccio, F. and Spychala, K. J. and Buschbeck, R. and Cerullo, G. and Polli, D. and Eng, L. M.}}, issn = {{2469-9950}}, journal = {{Physical Review B}}, number = {{22}}, publisher = {{American Physical Society (APS)}}, title = {{{Phonon dephasing times determined with time-delayed broadband coherent anti-Stokes Raman scattering}}}, doi = {{10.1103/1ctr-csjy}}, volume = {{112}}, year = {{2025}}, } @article{62716, author = {{Büttner, Denise}}, journal = {{Migrationspädagogische Zweitsprachdidaktik}}, publisher = {{LibreCat University}}, title = {{{Kritische Einsprachigkeitsdidaktik als kasuistischer Ansatz für die Lehrkräftebildung}}}, doi = {{10.25365/MPZD-2025-4-6}}, year = {{2025}}, } @phdthesis{62750, abstract = {{Diese Dissertation enthält Beiträge zum Bereich der Mehrzieloptimierung mit einem Fokus auf unbeschränkten Problemen, die auf einem allgemeinen Hilbertraum definiert sind. Für Mehrzieloptimierungsprobleme mit lokal Lipschitz-stetigen Zielfunktionen definieren wir ein multikriterielles Subdifferential, das wir erstmals im Kontext allgemeiner Hilberträume analysieren. Aufbauend auf diesen theoretischen Untersuchungen präsentieren wir ein Abstiegsverfahren, bei welchem in jeder Iteration eine Abstiegsrichtung mittels einer numerischen Approximation des multikriteriellen Subdifferentials bestimmt wird. Im Kontext konvexer, stetig differenzierbarer Zielfunktionen mit Lipschitz-stetigen Gradienten, führen wir eine Familie von dynamischen Gradientensystemen mit Trägheitsterm ein, die bekannte kontinuierliche Systeme aus der skalaren Optimierung verallgemeinern. Wir stellen drei neue Systeme vor: eines mit konstanter Dämpfung, eines mit asymptotisch abnehmender Dämpfung und eines, das zusätzlich eine zeitabhängige Tikhonov-Regularisierung beinhaltet. Aufbauend auf den Untersuchungen der neuen dynamischen Gradientensysteme, entwickeln wir ein beschleunigtes Gradientenverfahren zur Mehrzieloptimierung, das auf einer Diskretisierung des multikriteriellen Gradientensystems mit asymptotisch abnehmender Dämpfung beruht. Das hergeleitete Verfahren bewahrt die günstigen Konvergenzeigenschaften des kontinuierlichen Systems und erreicht eine schnellere Konvergenz als klassische Verfahren.}}, author = {{Sonntag, Konstantin}}, publisher = {{Paderborn University}}, title = {{{First-order methods and gradient dynamical systems for multiobjective optimization}}}, doi = {{10.17619/UNIPB/1-2457}}, year = {{2025}}, } @article{60509, author = {{Vogelsang, Christoph and Scholl, Daniel and Meier, Jana and Küth, Simon}}, journal = {{Education Sciences}}, number = {{7}}, title = {{{Thoughts Are Free—Differences Between Unstructured and Structured Reflections of Teachers with Different Levels of Expertise}}}, doi = {{https://doi.org/10.3390/educsci15070820}}, volume = {{15}}, year = {{2025}}, } @article{62765, author = {{Strauß, Sara}}, issn = {{0947-0034}}, journal = {{Anglistik: International Journal of English Studies}}, number = {{1}}, pages = {{5--14}}, title = {{{Introduction: Irish Communities in a Glocal Context – Literary and Cultural Narratives}}}, doi = {{https://doi.org/10.33675/ANGL/2025/1/4}}, volume = {{36}}, year = {{2025}}, } @misc{62764, booktitle = {{Anglistik: International Journal of English Studies}}, editor = {{Strauß, Sara and Boller, Alessandra and Becker, Katrin}}, issn = {{0947-0034}}, number = {{1}}, title = {{{Focus on Irish Communities in a Glocal Context: Literary and Cultural Narratives}}}, volume = {{36}}, year = {{2025}}, } @article{62798, abstract = {{We investigated electrodeposited nanoparticulate nickel selenide (pre)catalysts that transform into nickel oxides/oxyhydroxides under oxygen evolution reaction conditions in alkaline solutions. Previous studies of this transformation were conducted at lower current densities than those of industrial relevance (≥1 A cm–2). We used ultramicroelectrodes (UMEs) to achieve such current densities, benefiting from their small size, ensuring low absolute currents and low ohmic drop but high current densities. Morphological degradation of the catalyst material was only observed at current densities exceeding 1 A cm–2 but not for smaller ones. Using X-ray absorption, X-ray photoemission spectroscopy, and X-ray diffraction, we confirmed that the degradation was accompanied by the literature-known transformation of nanoparticulate Ni3Se2 (bulk)/NiSe (surface) into nickel oxyhydroxide. The transformation of the precatalyst goes along with a significant improvement in the charge transfer kinetics observed by decreasing Tafel slopes with ongoing experimental time extracted from cyclic voltammetry (CV) experiments and electrochemical impedance spectroscopy (EIS) in the high-frequency range. However, these kinetic improvements are accompanied by limitations in mass transport concluded from decreasing current responses at high overpotentials in CVs and increasing impedance in the low-frequency range of the EIS spectra after extended CV cycling. These mass transport limitations originated from morphological degradations at the UME exceeding 1 A cm–2 which we proved by applying identical location scanning electron microscopy. This has not been reported in studies that have been limited to lower current densities before. Our findings showcase how UMEs can be used to study (pre)catalysts (herein nickel selenides) under current densities of industrial relevance in the absence of ohmic drop-related ambiguities, combined with in-depth materials characterization studies, e.g., identical location microscopy and advanced spectroscopic methods. This approach enables direct evaluation and comparison of catalyst materials and thus demonstrates how to overcome long-standing limitations of electrocatalyst design and testing.}}, author = {{Hiege, Felix and Chang, Chun-Wai and Trost, Oliver and van Halteren, Charlotte E. R. and Hosseini, Pouya and Bendt, Georg and Schulz, Stephan and Feng, Zhenxing and Linnemann, Julia and Tschulik, Kristina}}, issn = {{1944-8244}}, journal = {{ACS Applied Materials & Interfaces}}, keywords = {{Electrocatalysis, oxygen evolution reaction, nickel selenide, microelectrode}}, number = {{29}}, pages = {{41893--41903}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Morphological Degradation of Oxygen Evolution Reaction-Electrocatalyzing Nickel Selenides at Industrially Relevant Current Densities}}}, doi = {{10.1021/acsami.5c05381}}, volume = {{17}}, year = {{2025}}, } @article{62819, abstract = {{Novel oxalate-bridged heterotrinuclear complexes [A][Mn2Cr(bpy)2(H2O)2Cl2(C2O4)3] (A = (CH3)2(C2H5)NH+ (1) and (CH3)(C2H5)2NH+ (2); bpy = 2,2′-bipyridine) were synthesized using an aqueous solution of [A]3[Cr(C2O4)3] as a building block in reaction with Mn2+ ions and with the addition of the N-donor ligand bipyridine. The isostructural heterometallic complex salts were characterized by single-crystal and powder X-ray diffraction, infrared and impedance spectroscopy, thermal analysis and magnetization measurements. The trinuclear anion [{Mn(bpy)(H2O)Cl(μ-C2O4)}2Cr(C2O4)]− consists of two [Mn(bpy)(H2O)Cl]+ units bridged by the [Cr(C2O4)3]3− anion, which acts as a bidentate ligand towards each of the manganese atoms. The anions are hydrogen bonded to each other via coordinated chloride anions, water molecules and oxygen oxalate atoms, resulting in two-dimensional (2D) hydrogen bonding layers. Compounds exhibit water-assisted proton conductivity behaviour, which was investigated at different temperatures and relative humidities (RH). At 25 °C, an increase in RH from 60% to 93% resulted in an obvious proton conducting switch from 9.1 × 10−11 to 5.6 × 10−5 S cm−1 for 1 and from 7.4 × 10−10 to 1.8 × 10−6 S cm−1 for 2, corresponding to high on/off ratios of about 106 for 1 and 104 for 2. In situ powder X-ray diffraction (PXRD) analysis showed that unit cell parameters of compounds 1 and 2 slightly increase when exposed to humid conditions. This confirmed that incorporation of water molecules into structures with pores and voids causes the proton conductivity switching phenomenon. Magnetic susceptibility measurements indicate a ferromagnetic interaction between Cr3+ and Mn2+ ions bridged by the bis(bidentate) oxalate group. The prepared compounds 1 and 2 were explored as single-source precursors for the formation of spinel oxide by their thermal treatment. With increasing temperature, the spinel composition changed according to the formula Mn1+xCr2–xO4 (0 ≤ x ≤ 1), where x = 0.7 at 500 °C and x = 1 at 900 °C when tet[MnII]oct[MnIIICrIII]O4 is formed. The (micro)structure, morphology, and optical properties of spinel Mn2CrO4 were characterized by PXRD, scanning electron microscopy and UV-Vis diffuse reflectance spectroscopy. The photocatalytic activity of this oxide in degradation of the methylene blue dye under Vis irradiation without and with the support of hydrogen peroxide was further investigated.}}, author = {{Lozančić, Ana and Burazer, Sanja and Wagner, Tobias and Molčanov, Krešimir and Pajić, Damir and Androš Dubraja, Lidija and Tiemann, Michael and Jurić, Marijana}}, issn = {{2050-7526}}, journal = {{Journal of Materials Chemistry C}}, number = {{41}}, pages = {{21179--21195}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{Water-assisted proton conductivity and a magnetic study of heterotrinuclear oxalate-bridged compounds: molecular precursors for the Mn2CrO4 spinel}}}, doi = {{10.1039/d5tc02569a}}, volume = {{13}}, year = {{2025}}, } @inbook{61474, author = {{Habig, Sebastian and Großmann, Nadine and Schmid, Andrea M. and van Vorst, Helena and Fechner, Sabine and Wilde, Matthias}}, booktitle = {{Interesse revisited}}, isbn = {{9783658485412}}, publisher = {{Springer Fachmedien Wiesbaden}}, title = {{{Empirische Befunde der Interessenforschung der Fächer Biologie, Chemie und Physik im Primar- und Sekundarbereich seit 2012 – Ein systematisches Review}}}, doi = {{10.1007/978-3-658-48542-9_4}}, year = {{2025}}, } @inbook{61475, author = {{Zöchling, Sarah and Pletschacher, Laura and Maurer, Christian and Berger, Roland and Lindmaier, Kerstin and Fechner, Sabine and Wodzinski, Rita}}, booktitle = {{Interesse revisited}}, isbn = {{9783658485412}}, publisher = {{Springer Fachmedien Wiesbaden}}, title = {{{Interessenförderung im Physik- und Chemieunterricht – Eine Bestandsaufnahme}}}, doi = {{10.1007/978-3-658-48542-9_10}}, year = {{2025}}, } @inproceedings{62007, abstract = {{Ensemble methods are widely employed to improve generalization in machine learning. This has also prompted the adoption of ensemble learning for the knowledge graph embedding (KGE) models in performing link prediction. Typical approaches to this end train multiple models as part of the ensemble, and the diverse predictions are then averaged. However, this approach has some significant drawbacks. For instance, the computational overhead of training multiple models increases latency and memory overhead. In contrast, model merging approaches offer a promising alternative that does not require training multiple models. In this work, we introduce model merging, specifically weighted averaging, in KGE models. Herein, a running average of model parameters from a training epoch onward is maintained and used for predictions. To address this, we additionally propose an approach that selectively updates the running average of the ensemble model parameters only when the generalization performance improves on a validation dataset. We evaluate these two different weighted averaging approaches on link prediction tasks, comparing the state-of-the-art benchmark ensemble approach. Additionally, we evaluate the weighted averaging approach considering literal-augmented KGE models and multi-hop query answering tasks as well. The results demonstrate that the proposed weighted averaging approach consistently improves performance across diverse evaluation settings.}}, author = {{Sapkota, Rupesh and Demir, Caglar and Sharma, Arnab and Ngonga Ngomo, Axel-Cyrille}}, booktitle = {{Proceedings of the Thirteenth International Conference on Knowledge Capture(K-CAP 2025)}}, keywords = {{Knowledge Graphs, Embeddings, Ensemble Learning}}, location = {{Dayton, OH, USA}}, publisher = {{ACM}}, title = {{{Parameter Averaging in Link Prediction}}}, doi = {{https://doi.org/10.1145/3731443.3771365}}, year = {{2025}}, } @article{62871, author = {{Wehde, Janis}}, issn = {{2190-6890}}, journal = {{Zeitschrift für Bildungsforschung}}, publisher = {{Springer}}, title = {{{Selbstwirksamkeitserwartungen zur methodischen Gestaltung eines gemeinschaftsorientierten und partizipativ-verfahrensorientierten Unterrichts: Entwicklung von Kurzskalen zur schulischen Demokratiebildung}}}, doi = {{10.1007/s35834-025-00522-4}}, year = {{2025}}, } @article{60568, author = {{Bocchini, Adriana and Kollmann, S. and Gerstmann, Uwe and Schmidt, Wolf Gero and Grundmeier, Guido}}, issn = {{0039-6028}}, journal = {{Surface Science}}, publisher = {{Elsevier BV}}, title = {{{Phosphonic acid adsorption on α-Bi2O3 surfaces}}}, doi = {{10.1016/j.susc.2025.122776}}, volume = {{760}}, year = {{2025}}, } @article{61156, abstract = {{Explainability has become an important topic in computer science and artificial intelligence, leading to a subfield called Explainable Artificial Intelligence (XAI). The goal of providing or seeking explanations is to achieve (better) ‘understanding’ on the part of the explainee. However, what it means to ‘understand’ is still not clearly defined, and the concept itself is rarely the subject of scientific investigation. This conceptual article aims to present a model of forms of understanding for XAI-explanations and beyond. From an interdisciplinary perspective bringing together computer science, linguistics, sociology, philosophy and psychology, a definition of understanding and its forms, assessment, and dynamics during the process of giving everyday explanations are explored. Two types of understanding are considered as possible outcomes of explanations, namely enabledness, ‘knowing how’ to do or decide something, and comprehension, ‘knowing that’ – both in different degrees (from shallow to deep). Explanations regularly start with shallow understanding in a specific domain and can lead to deep comprehension and enabledness of the explanandum, which we see as a prerequisite for human users to gain agency. In this process, the increase of comprehension and enabledness are highly interdependent. Against the background of this systematization, special challenges of understanding in XAI are discussed.}}, author = {{Buschmeier, Hendrik and Buhl, Heike M. and Kern, Friederike and Grimminger, Angela and Beierling, Helen and Fisher, Josephine Beryl and Groß, André and Horwath, Ilona and Klowait, Nils and Lazarov, Stefan Teodorov and Lenke, Michael and Lohmer, Vivien and Rohlfing, Katharina and Scharlau, Ingrid and Singh, Amit and Terfloth, Lutz and Vollmer, Anna-Lisa and Wang, Yu and Wilmes, Annedore and Wrede, Britta}}, journal = {{Cognitive Systems Research}}, keywords = {{understanding, explaining, explanations, explainable, AI, interdisciplinarity, comprehension, enabledness, agency}}, title = {{{Forms of Understanding for XAI-Explanations}}}, doi = {{10.1016/j.cogsys.2025.101419}}, volume = {{94}}, year = {{2025}}, }