@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}}, } @inbook{48069, author = {{Göddertz, Nina}}, booktitle = {{Soziale Frauenberufe in Ost und West}}, editor = {{Bock, Karin and Braches-Chyrek, Rita and Spanu, Stephanie}}, pages = {{144--162 }}, publisher = {{Wochenschau-Verlag}}, title = {{{Kindermädchen – Von ‚strebsamen Mädchen‘, fliegenden Regenschirmen und neuen Gewändern eines (nicht) ausgestorbenen Berufes}}}, year = {{2025}}, } @inbook{48066, author = {{Göddertz, Nina}}, booktitle = {{Soziale Frauenberufe in Ost und West}}, editor = {{Bock, Karin and Braches-Chyrek , Rita and Spanu, Stephanie }}, pages = {{106--127 }}, publisher = {{Wochenschau-Verlag}}, title = {{{Dienstmädchen – von romantisierten Zuschreibungen und menschenunwürdigen Arbeits- und Lebensbedingungen, damals wie heute.}}}, year = {{2025}}, } @inbook{62829, author = {{Schneider, Lea and Tenberge, Claudia}}, booktitle = {{The 42nd Pupils' Attitudes Towards Technology Conference}}, editor = {{El Fadil, Brahim and Abdelkrim, Hasni and Yazza, Younes and Blanc, Martin and Samiana, Ibtissam}}, location = {{Montreal}}, pages = {{426--437}}, title = {{{Insights into the current situation of technological education at primary schools – illustrated by the example of Germany }}}, year = {{2025}}, } @article{62794, author = {{Hansmeier, Philipp and Althaus, Maike}}, journal = {{Journal of Service Management Research}}, number = {{2}}, title = {{{Visitor Revival Propositions for Cultural Institutions – A Service Science Perspective}}}, year = {{2025}}, } @inproceedings{60126, author = {{Hansmeier, Philipp and Schäfer, Jannika Marie}}, booktitle = {{Thirty-Third European Conference on Information Systems}}, location = {{Amman}}, title = {{{ARTIFICIAL INTELLIGENCE IN DIGITAL SERVICE ECOSYSTEMS – A TAXONOMY APPROACH}}}, year = {{2025}}, } @inproceedings{60127, author = {{Hansmeier, Philipp}}, booktitle = {{Thirty-Third European Conference on Information Systems}}, title = {{{CONCEPTUALIZING A CUSTOMER EXPERIENCE FRAMEWORK FOR HYBRID (PHYSICAL-DIGITAL) SERVICE ECOSYSTEMS}}}, year = {{2025}}, } @inproceedings{61378, author = {{Hansmeier, Philipp and zur Heiden, Philipp and Beverungen, Daniel}}, booktitle = {{Proceedings of the 20th International Conference on Wirtschaftsinformatik (WI25)}}, title = {{{Service Innovation through Data Ecosystems – Designing a Recombinant Method}}}, year = {{2025}}, } @article{59255, abstract = {{

Smart service is fundamentally transforming customer experience in both commercial and private contexts. While the information systems and service disciplines have explored the properties and implementation of smart service, there is a gap in understanding how smart service relates to customer experience at the ecosystem level. With the increasing prominence of digital platforms and data spaces, this ecosystem perspective will become crucial for the success of smart service. We report findings from a systematic scoping literature review on smart service themes and related customer experience concepts. Our analysis of 26 high-quality papers reveals three key insights: (1) smart service systems play a pivotal role in enabling customer experience, (2) customer experience in smart service scenarios is often co-created through “hybrid” customer journeys, and (3) these scenarios are subject to an ecosystem-level. Additionally, we identify smart service fundamentals, embeddedness levels, and business innovation as core themes that shape ecosystem-level customer experience.

}}, author = {{Hansmeier, Philipp and Beverungen, Daniel}}, issn = {{2511-8676}}, journal = {{Journal of Service Management Research}}, number = {{2}}, pages = {{74--93}}, publisher = {{Nomos Verlag}}, title = {{{Ecosystem-Level Customer Experience with Smart Service: Insights from a Systematic Scoping Literature Review}}}, doi = {{10.5771/2511-8676-2024-2-74}}, volume = {{8}}, year = {{2025}}, } @article{62867, abstract = {{ABSTRACT Effective manipulation of photonic spin–orbit coupling (SOC) in microcavities is of fundamental importance within topological photonics and applications. Anisotropic organic single‐crystalline materials can induce abundant SOC phenomenon due to their flexible tunability of molecular geometries, however, the intrinsic relationship between molecular geometries/orientations in 3D space and photonic SOC is lacking. In this study, we design two kinds of 2D organic polymorphs for the construction of organic microcavities to investigate the structure‐performance relationships. In two polymorphic microcavities, two distinctive photonic SOC phenomena are observed regardless of the in‐plane anisotropy of organic polymorphs. Theoretical analysis indicates that the photonic SOC strength is strongly influenced by the synergies between the crystal anisotropy and the tilted collective molecular transition dipole moment. Our results uncover the correlation mechanism between the structure of molecules and photonic SOC and open an avenue to engineer complex photonic SOC by use of organic microstructures towards the development of diverse integrated photonic devices.}}, author = {{Ji, Ying and Ma, Xuekai and Huang, Han and Deng, Yibo and Wang, Pingyang and Long, Teng and Li, Yuan and Zhao, Ruiyang and Li, Yunfei and An, Cunbin and Schumacher, Stefan and Gu, Chunling and Liao, Bo and Fu, Hongbing and Liao, Qing}}, issn = {{1863-8880}}, journal = {{Laser & Photonics Reviews}}, publisher = {{Wiley}}, title = {{{Molecular Orientation‐Dependent Photonic Spin–Orbit Coupling in Organic Microcavities Filled with 2D Polymorphic Crystals}}}, doi = {{10.1002/lpor.202501874}}, year = {{2025}}, } @article{62862, abstract = {{Exciton polariton condensates are macroscopic coherent states in which topological excitations can be observed. In this work, we observe the excitation of the vortices and realize tuning the topological charge by manipulating the pumping configurations. Using a digital micromirror device, we constructed an annular pumping pattern where the inner and outer rings can be easily tuned. Both the number and the topological charge of the vortices can be changed by slightly tuning the inner ring position against the outer ring. The experimental results can be reproduced in theory by the Gross–Pitaevskii equation. Our work offers to generate and manipulate vortices in exciton polariton condensates using a straightforward optical method.}}, author = {{Ai, Qiang and Ma, Xuekai and Barkhausen, Franziska and Zhai, Xiaokun and Xing, Chunzi and Yang, Xinmiao and Wang, Peilin and Liu, Tianyu and Zhang, Yong and Gu, Yazhou and Li, Peigang and Li, Zhitong and Hatzopoulos, Zacharias and Savvidis, Pavlos G. and Schumacher, Stefan and Gao, Tingge}}, issn = {{0003-6951}}, journal = {{Applied Physics Letters}}, number = {{12}}, publisher = {{AIP Publishing}}, title = {{{Tuning polariton vortices in an asymmetric ring potential}}}, doi = {{10.1063/5.0287076}}, volume = {{127}}, year = {{2025}}, } @article{62865, author = {{Sun, Jinming and Chen, Manna and Schumacher, Stefan and Hu, Wei and Ma, Xuekai}}, issn = {{2469-9950}}, journal = {{Physical Review B}}, number = {{11}}, publisher = {{American Physical Society (APS)}}, title = {{{Higher-order dark solitons and control dynamics in microcavity polariton condensates}}}, doi = {{10.1103/p357-vyq8}}, volume = {{112}}, year = {{2025}}, } @article{62876, abstract = {{ABSTRACT Spin‐coated polylactide (PLA) thin films were exposed to nitrogen plasma for varying time intervals. The progressive etching of the PLA film in direct contact with the nitrogen plasma was monitored in situ using polarization modulated infrared reflection absorption spectroscopy (PM‐IRRAS). No appreciative changes in composition were seen with PM‐IRRAS, indicating that the etching did not significantly affect the bulk composition. Atomic force microscopy characterization of the plasma‐etched films showed that the PLA films are homogeneously etched. Subsequent ex situ XPS analysis of the treated surface revealed the presence of C‐N bonds in the surface‐near region that could be associated with amino and/or amide surface species. PLA films were also alternatively exposed to nitrogen ion beams produced by an electron‐cyclotron‐resonance (ECR) plasma source and were investigated in vacuo by XPS. This treatment revealed the partial substitution of surface oxygen species by nitrogen, resulting in a similar surface modification as in the plasma case. The comparison of XPS data and water contact angle studies suggest that the activated surfaces show a reorientation of macromolecular fragments in the surface‐near region depending on the polarity of the phase with which they are in contact. Under ultra‐high vacuum (UHV) conditions, the surface tends to lower its surface energy, while in contact with the aqueous phase, subsurface polar groups orientate outwards, which enables the formation of hydrogen bonds.}}, author = {{Gołębiowska, Sandra and Voigt, Markus and de los Arcos de Pedro, Maria Teresa and Grundmeier, Guido}}, issn = {{0142-2421}}, journal = {{Surface and Interface Analysis}}, number = {{7}}, pages = {{499--509}}, publisher = {{Wiley}}, title = {{{In Situ PM‐IRRAS and XPS Analysis of Nitrogen Plasma Surface Modification of Polylactide Thin Films}}}, doi = {{10.1002/sia.7406}}, volume = {{57}}, year = {{2025}}, } @inbook{62839, author = {{Osnabrügge, Malin and Schemel, Nele and Schneider, Lea and Schröer, Franz and Tenberge, Claudia}}, booktitle = {{Zukünfte technischer Bildung}}, editor = {{Wiemer, Tobias and Binder, Martin and Penning, Isabell}}, location = {{Halle }}, title = {{{Learning to teach and teaching to learn about Robotics Professionalization for inclusive technology education integrating theory and practice}}}, 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{62875, author = {{Theile-Rasche, Chantal and Wang, Fuzeng and Prüßner, Tim and Huck, Marten and Steinrück, Hans-Georg and de los Arcos de Pedro, Maria Teresa and Grundmeier, Guido}}, issn = {{0040-6090}}, journal = {{Thin Solid Films}}, publisher = {{Elsevier BV}}, title = {{{Evaluation of anti-adhesive and corrosion protection properties of TiAlSiN-magnetron-sputtered films for applications in polymer processing}}}, doi = {{10.1016/j.tsf.2025.140676}}, volume = {{820}}, year = {{2025}}, } @article{62874, abstract = {{DNA origami adsorption at single-crystalline TiO2 surfaces is investigated at different Mg2+ concentrations. For TiO2(001), DNA origami adsorption is stronger at 5 mM than at 10 mM Mg2+, whereas the opposite is observed for TiO2(110) and TiO2(111).}}, author = {{Xu, Xiaodan and Gołębiowska, Sandra and de los Arcos de Pedro, Maria Teresa and Grundmeier, Guido and Keller, Adrian}}, issn = {{2755-3701}}, journal = {{RSC Applied Interfaces}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{DNA origami adsorption at single-crystalline TiO2 surfaces}}}, doi = {{10.1039/d5lf00109a}}, year = {{2025}}, } @article{62860, abstract = {{ The Quantum Internet, a network of quantum-enabled infrastructure, represents the next frontier in telecommunications, promising capabilities that cannot be attained by classical counterparts. A crucial step in realizing such large-scale quantum networks is the integration of entanglement distribution within existing telecommunication infrastructure. Here, we demonstrate a real-world scalable quantum networking testbed deployed within Deutsche Telekom’s metropolitan fibers in Berlin. Using commercially available quantum devices and standard add-drop multiplexing hardware, we distributed polarization-entangled photon pairs over dynamically selectable looped fiber paths ranging from 10 m to 60 km and showed entanglement distribution over up to approximately 100 km. Quantum signals, transmitted at 1324 nm (O-band), coexist with conventional bidirectional C-band traffic without dedicated fibers or infrastructure changes. Active stabilization of the polarization enables robust long-term performance, achieving entanglement Bell-state fidelity bounds between 85% and 99% and Clauser–Horne–Shimony–Holt parameter S -values between 2.36 and 2.74 during continuous multiday operation. By achieving a high-fidelity entanglement distribution with less than 1.5% downtime, we confirm the feasibility of hybrid quantum-classical networks under real-world conditions at the metropolitan scale. These results establish deployment benchmarks and provide a practical roadmap for telecom operators to integrate quantum capabilities. }}, author = {{Sena, Matheus and Flament, Mael and Andrewski, Shane and Caltzidis, Ioannis and Bigagli, Niccolò and Rieser, Thomas and Bello Portmann, Gabriel and Sekelsky, Rourke and Braun, Ralf-Peter and Craddock, Alexander N. and Schulz, Maximilian and Jöns, Klaus and Ritter, Michaela and Geitz, Marc and Holschke, Oliver and Namazi, Mehdi}}, issn = {{1943-0620}}, journal = {{Journal of Optical Communications and Networking}}, number = {{12}}, publisher = {{Optica Publishing Group}}, title = {{{High-fidelity quantum entanglement distribution in metropolitan fiber networks with co-propagating classical traffic}}}, doi = {{10.1364/jocn.575396}}, volume = {{17}}, year = {{2025}}, } @inproceedings{62879, author = {{Osnabrügge, Malin and Tenberge, Claudia}}, booktitle = {{Posterbeitrag im Rahmen der Jahrestagung der Deutschen Gesellschaft für Technischen Bildung (DGTB) vom 18-19.09.2025 in Chemnitz }}, location = {{Chemnitz}}, title = {{{Digital-gestützt lehren lernen. Technisches Problemlöser am Übergang von G zu Sek I}}}, year = {{2025}}, }