@article{63562, abstract = {{Entangled two-mode Gaussian states constitute an important building block for continuous variable quantum computing and communication protocols. In this work, we theoretically study two-mode bipartite states, which are extracted from multimode light generated via type-II parametric downconversion (PDC) in lossy waveguides. For these states, we demonstrate that the squeezing quantifies entanglement and we construct a measurement basis, which results in the maximal bipartite entanglement. We illustrate our findings by numerically solving the spatial master equation for PDC in a Markovian environment. The optimal measurement modes are compared with two widely used broadband bases: the Mercer–Wolf basis (the first-order coherence basis) and the Williamson–Euler basis.}}, author = {{Kopylov, Denis and Meier, Torsten and Sharapova, Polina R.}}, issn = {{2835-0103}}, journal = {{APL Quantum}}, number = {{4}}, publisher = {{AIP Publishing}}, title = {{{Bipartite entanglement extracted from multimode squeezed light generated in lossy waveguides}}}, doi = {{10.1063/5.0293116}}, volume = {{2}}, year = {{2025}}, } @inproceedings{58840, author = {{Bucchiarone, Antonio and Bonetti, Federico and Yigitbas, Enes}}, booktitle = {{Proceedings of the 20th International Conference on Software Engineering for Adaptive and Self-Managing Systems (SEAMS 2025)}}, publisher = {{IEEE}}, title = {{{Leveraging Self-Adaptive Systems and Generative AI for Personalizing Educational Serious Games: Architecture and Future Challenges}}}, year = {{2025}}, } @inproceedings{58839, author = {{Schlenker, Julian and Vater, Hendrik and Yigitbas, Enes and Dann, Alexander}}, booktitle = {{Proceedings of the 27th International Conference on Human-Computer Interaction (HCII 2025)}}, publisher = {{Springer}}, title = {{{Seamless Augmented Reality Support for a Computer-Assisted Surgery System for Minimally Invasive Orthopedic Surgeries}}}, year = {{2025}}, } @inproceedings{58835, author = {{Schmidt, Leonard and Yigitbas, Enes}}, booktitle = {{Proceedings of the 18th International Conference on PErvasive Technologies Related to Assistive Environments (PETRA 2025)}}, publisher = {{ACM}}, title = {{{Taxonomy and Analysis of Security Vulnerabilities, Privacy Violations and Potential Mitigation Strategies to XR Systems}}}, year = {{2025}}, } @inproceedings{58836, author = {{Yigitbas, Enes and Karch, Julian }}, booktitle = {{Proceedings of the 18th International Conference on PErvasive Technologies Related to Assistive Environments (PETRA 2025)}}, publisher = {{ACM}}, title = {{{Immersive Smart Home Planning and Automation with Mixed Reality and Digital Twin Technologies}}}, year = {{2025}}, } @inproceedings{58837, author = {{Yigitbas, Enes and Karch, Julian}}, booktitle = {{Proceedings of the 18th International Conference on PErvasive Technologies Related to Assistive Environments (PETRA 2025)}}, publisher = {{ACM}}, title = {{{Augmented Reality-Assisted Assessment of Workplace Ergonomy}}}, year = {{2025}}, } @inproceedings{58838, author = {{Geil, Manuel and Wübbeke, Andreas and Yigitbas, Enes}}, booktitle = {{Proceedings of the 27th International Conference on Human-Computer Interaction (HCII 2025)}}, publisher = {{Springer}}, title = {{{Blackbox Unit Testing of Virtual Reality Applications}}}, year = {{2025}}, } @inproceedings{59873, abstract = {{This paper focuses on the failure behavior of clinched specimens with various stiffnesses under shear tensile loading. The primary objective is to assess the influence of the specimen stiffness with an arrangement of clinched joints. The specimen stiffness depends on several variables. In addition to the material selection, the specific choice of geometry and the design of the clinched joints must also be taken into account. A number of experiments was conducted to investigate the failure behavior of specimens with an arrangement of three clinched joints under shear tensile loading. These configurations were subjected to shear tensile tests, with force displacement curves recorded for each specimen to provide a detailed characterization of their structural response. The stiffness is modified by altering the specimen width, which has marginal impact on the maximum force. The experimental findings indicate that reducing the specimen stiffness results in a shift in the type of stress, with the failure behavior becoming increasingly influenced by bending stress. These results offer important insights for the design of clinched joint assemblies, indicating that it is feasible to achieve the desired properties by changing the specimen stiffness.}}, author = {{Wolf, Eugen and Brosius, Alexander}}, booktitle = {{MATEC Web of Conferences}}, issn = {{2261-236X}}, keywords = {{Joining, Sheet Metal, Stiffness, Clinching}}, location = {{Lisbon}}, publisher = {{EDP Sciences}}, title = {{{Investigation failure behavior in the shear tensile test with variety of specimen stiffness}}}, doi = {{10.1051/matecconf/202540801080}}, volume = {{408}}, year = {{2025}}, } @inproceedings{59485, abstract = {{This paper focuses on the failure behavior of specimens with various configurations of clinched joints under shear tensile loading. The primary objective is to assess the influence of the joining direction and the spatial arrangement of clinched joints on their mechanical performance. A number of experiments was conducted, focusing on three clinched joints arranged in different configurations, each varying in terms of joining direction and spacing. These configurations were subjected to shear tensile tests, with force-displacement curves recorded for each sample to provide a detailed characterization of their structural response. The experimental findings indicate that the specific arrangement of the clinched joints, in terms of joining direction, has a marginal impact on the overall failure behavior. This suggests that intricate modifications to the joining direction are unnecessary to achieve improved mechanical performance in such applications. These results offer valuable insights for the design of clinched joint assemblies, indicating that simplified joining strategies may suffice without compromising structural integrity under shear loading.}}, author = {{Wolf, Eugen and Brosius, Alexander}}, booktitle = {{Materials Research Proceedings}}, issn = {{2474-395X}}, keywords = {{Joining, Sheet Metal, Clinching}}, location = {{Paderborn}}, pages = {{ 86 -- 92}}, publisher = {{Materials Research Forum LLC}}, title = {{{Investigation failure behavior in the shear tensile test with respect to the arrangements of clinched joints}}}, doi = {{10.21741/9781644903551-11}}, volume = {{52}}, year = {{2025}}, } @article{60299, abstract = {{Non-rotationally symmetrical joints can have different properties that can be controlled by the joint orientation. This hypothesis is tested using a Reuleaux triangle joint geometry. A tool design is carried out, followed by a numerical sensitivity analysis of the tool geometry. Initial tools were manufactured for experimental investigations and then adapted based on the findings of the sensitivity analysis. The joints are characterized by micrographs, 3D scans, shear tensile tests, head tensile tests and three-point bending tests and compared with a round geometry. The analysis confirms the hypothesis. Thus, joints with adaptable properties can be produced with one tool set.}}, author = {{Steinfelder, Christian and Acksteiner, Clemens and Brosius, Alexander}}, issn = {{0007-8506}}, journal = {{CIRP Annals}}, keywords = {{Joining, Forming, Property adjustment}}, publisher = {{Elsevier BV}}, title = {{{A new joint with versatile properties based on a Reuleaux triangle geometry}}}, doi = {{10.1016/j.cirp.2025.03.002}}, year = {{2025}}, } @article{60565, author = {{Bocchini, Adriana and Gerstmann, Uwe and Schmidt, Wolf Gero}}, issn = {{2469-9950}}, journal = {{Physical Review B}}, number = {{10}}, publisher = {{American Physical Society (APS)}}, title = {{{Microscopic origin of gray tracks in KTiOPO4}}}, doi = {{10.1103/physrevb.111.104103}}, volume = {{111}}, year = {{2025}}, } @article{58642, abstract = {{We present a cost-effective self-assembly method to fabricate low-density dimer NPs in an NPoM architecture, using the M13 phage as a spacer layer. This will enable the development of dynamic plasmonic devices and advanced sensing applications.}}, author = {{Devaraj, Vasanthan and Ruiz Alvarado, Isaac Azahel and Lee, Jong-Min and Oh, Jin-Woo and Gerstmann, Uwe and Schmidt, Wolf Gero and Zentgraf, Thomas}}, issn = {{2055-6756}}, journal = {{Nanoscale Horizons}}, pages = {{537--548}}, publisher = {{Royal Society of Chemistry (RSC)}}, title = {{{Self-assembly of isolated plasmonic dimers with sub-5 nm gaps on a metallic mirror}}}, doi = {{10.1039/d4nh00546e}}, volume = {{10}}, year = {{2025}}, } @inproceedings{60583, abstract = {{Assessing and communicating software security has become a crucial concern in the era of digital transformation. As software systems grow more complex and interconnected, it becomes increasingly challenging to effectively evaluate and communicate a product's security status to both technical and non-technical stakeholders. The Software Product Health Assistant (SPHA) is designed to automatically collect and aggregate data from existing expert tools and derive, among other scores, a transparent Security Score. SPHA is designed to present and explain this Security Score to decision-makers to support their responsibilities. In this paper, we demonstrate how to integrate data from SMARAGD (System Modeler for Architectural Risk Assessment and Guidance on Defenses), a safety-informed threat modeling tool, into SPHA to enhance the existing definition of its Security Score. To achieve this, we combine information about known vulnerabilities with architectural and threat data to calculate a realistic risk score for the product in question.}}, author = {{Strüwer, Jan-niclas and Trentinaglia, Roman and Wohlers, Benedict and Bodden, Eric and Dumitrescu, Roman}}, booktitle = {{AHFE International}}, issn = {{2771-0718}}, publisher = {{AHFE International}}, title = {{{Assessing and Communicating Software Security: Enhancing Software Product Health with Architectural Threat Analysis}}}, doi = {{10.54941/ahfe1006145}}, volume = {{168}}, year = {{2025}}, } @inproceedings{60914, author = {{Neumayr, Thomas and Yigitbas, Enes and Augstein, Mirjam and Herder, Eelco and Stojko, Laura and Strecker, Jannis and Seitz, Julia}}, booktitle = {{Proceedings of the Mensch & Computer (2025)}}, title = {{{ABIS 2025 – 29th International Workshop on Personalization and Recommendation}}}, year = {{2025}}, } @inproceedings{60915, author = {{Krings, Sarah Claudia and Yigitbas, Enes and Sauer, Stefan}}, booktitle = {{Proceedings of the 29th International Workshop on Personalization and Recommendation}}, title = {{{Perspectives on Contexts and Adaptations for Cross-Reality}}}, year = {{2025}}, } @article{60935, abstract = {{Research suggests that presenting an action via multimodal stimulation (verbal and visual) enhances its perception. To highlight this, in most studies, assertive instructions are generally presented before the occurrence of the visual subevent(s). However, verbal instructions need not always be assertive; they can also include negation to contrast the present event with a prior one, thereby facilitating processing—a phenomenon known as contextual facilitation. In our study, we investigated whether using negation to guide an action sequence facilitates action perception, particularly when two consecutive subactions contrast with each other. Stimuli from previous studies on action demonstration were used to create (non)contrastive actions, that is, a ball following noncontrastive and identical (Over–Over or Under–Under) versus contrastive and opposite paths (Over–Under or Under–Over) before terminating at a goal location. In Experiment 1, either an assertive or a negative instruction was provided as verbal guidance before onset of each path. Analyzing data from 35 participants, we found that, whereas assertive instructions facilitate overall action recall, negating the later path for contrastive actions is equally facilitative. Given that action goal is the most salient aspect in event memory due to goal-path bias in attention, a second experiment was conducted to test the effect of multimodal synchrony on goal attention and action memory. Experiment 2 revealed that when instructions overlap with actions, they become more tailored—assertive instructions effectively guide noncontrastive actions, while assertive–negative instruction particularly guides contrastive actions. Both studies suggest that increased attention to the goal leads to coarser perception of midevents, with action-instruction synchrony modulating goal bias in real-time event apprehension to serve distinct purposes for action conceptualization. Whereas presenting instructions before subactions attenuates goal attention, overlapping instructions increase goal attention and reveal the selective roles of assertive and negative instructions in guiding contrastive and noncontrastive actions.}}, author = {{Singh, Amit and Rohlfing, Katharina J.}}, journal = {{Cognitive Science}}, number = {{8}}, publisher = {{Wiley}}, title = {{{Contrastive Verbal Guidance: A Beneficial Context for Attention To Events and Their Memory?}}}, doi = {{10.1111/cogs.70096}}, volume = {{49}}, year = {{2025}}, } @inproceedings{61047, author = {{Rautenberg, Frederik and Seebauer, Fritz and Wiechmann, Jana and Kuhlmann, Michael and Wagner, Petra and Haeb-Umbach, Reinhold}}, booktitle = {{Interspeech 2025}}, location = {{Rotterdam}}, publisher = {{ISCA}}, title = {{{Synthesizing Speech with Selected Perceptual Voice Qualities – A Case Study with Creaky Voice}}}, doi = {{10.21437/Interspeech.2025-1443}}, year = {{2025}}, } @inproceedings{61154, author = {{Türk, Olcay and Lazarov, Stefan Teodorov and Buschmeier, Hendrik and Wagner, Petra and Grimminger, Angela}}, booktitle = {{LingCologne 2025 – Book of Abstracts}}, location = {{Cologne, Germany}}, pages = {{36}}, title = {{{Acoustic detection of false positive backchannels of understanding in explanations}}}, year = {{2025}}, } @inproceedings{63854, author = {{Eikerling, Hendrik and Kampkötter, Anemone}}, booktitle = {{Lecture Notes in Computer Science}}, isbn = {{9783031823619}}, issn = {{0302-9743}}, publisher = {{Springer Nature Switzerland}}, title = {{{Enabling Android Application Monitoring by Characterizing Security-Critical Code Fragments}}}, doi = {{10.1007/978-3-031-82362-6_25}}, year = {{2025}}, } @article{60566, author = {{Bocchini, Adriana and Rüsing, Michael and Bollmers, Laura and Lengeling, Sebastian and Mues, Philipp and Padberg, Laura and Gerstmann, Uwe and Silberhorn, Christine and Eigner, Christof and Schmidt, Wolf Gero}}, issn = {{2475-9953}}, journal = {{Physical Review Materials}}, number = {{7}}, publisher = {{American Physical Society (APS)}}, title = {{{Mg dopants in lithium niobate: Defect models and impact on domain inversion}}}, doi = {{10.1103/5wz1-bjyr}}, volume = {{9}}, year = {{2025}}, }