@article{66583, abstract = {{We introduce a method for determining the sensitivity of any given entangled two-photon absorption (ETPA) measurement. By modeling all signal and noise contributions to the measurement, we derive a single numerical value that describes the sensitivity of the ETPA measurement in Göppert-Mayer units. This allows us to directly compare vastly different experimental approaches and determine whether ETPA will be detectable under the given conditions. Therefore we can quantify the effect of any change to a given experimental apparatus and identify the ideal optimization pathway.}}, author = {{Pollmann, René and Roeder, Franz and Silberhorn, Christine and Brecht, Benjamin}}, issn = {{2469-9926}}, journal = {{Physical Review A}}, number = {{1}}, publisher = {{American Physical Society (APS)}}, title = {{{Limitations of entangled two-photon absorption detection}}}, doi = {{10.1103/qpb1-hk5l}}, volume = {{114}}, year = {{2026}}, } @article{66622, abstract = {{Abstract The increasing use of thin-walled profiles in automotive battery housing construction is leading to a growing demand for one-sided access mechanical fasteners. Currently, the installation of blind rivet nuts still requires pre-drilling using chip-forming operations. In Meschut and Meyer (Vorlochfreies Setzen von Funktionselementen mittels Fließformen, Europäische Forschungsgesellschaft für Blechverarbeitung e.V. (EFB), Hannover, 2021), a chipless, two-step method for installing blind rivet nuts was developed, in which flow-drilling is the initial step. To eliminate the pre-drilling operation and optimise the joining process of blind rivet nuts, a pilot-hole-free joining method using a flow-drilling process is being pursued. The use of these blind rivet nuts can significantly simplify the joining process by eliminating chip-forming pre-drilling operations. Additionally, the screw-through capability reduces screw variance in automated fastening, optimising the feeding process by minimising the risk of incorrect screw selection. This work aims to develop a single-step process for the installation of a blind rivet nut. To achieve this, it is necessary to design the geometries of both the blind rivet nut and the flow-drill former, which also serves as the mandrel for the blind rivet nut. In addition to the geometries of the tools and functional elements, the flow-drilling process itself has been developed. Special attention is given to the pull-through and the formation of the closing head. To optimise the closing head formation, an iterative optimization process was used. The quality of the pull-through is improved by varying the tip geometries and adjusting the process parameters during flow-drilling.}}, author = {{Böhm, Yannic and Meschut, Gerson}}, issn = {{2731-6564}}, journal = {{Discover Mechanical Engineering}}, number = {{1}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Single-stage setting of blind rivet nuts without pre-drilling}}}, doi = {{10.1007/s44245-026-00222-x}}, volume = {{5}}, year = {{2026}}, } @article{66764, abstract = {{ABSTRACT Methane, synthesized from renewable hydrogen and biogenic CO 2 , can be a part of the transformation towards renewable energy carriers. A major engineering challenge is the optimization of the fixed‐bed reactor design, specifically the heat dissipation in regions of high reaction heat release. A mitigation concept is the introduction of inert material into the fixed bed, called catalyst dilution. In this study, a 1D continuity model is presented, which aims to predict catalyst superheating. This model is used in an exploratory study to identify system sensitivity and optimization parameters. Subsequently, an optimization framework for improving the reactor design is tested, resulting in a 148‐K reduction in peak catalyst temperature when using a 33.3 vol% catalyst dilution. }}, author = {{Schmücker, Torben and Riese, Julia}}, issn = {{0009-286X}}, journal = {{Chemie Ingenieur Technik}}, publisher = {{Wiley}}, title = {{{Model‐Based Optimization Framework for Catalyst Dilution Applications in CO2‐Methanation Reactors}}}, doi = {{10.1002/cite.70162}}, year = {{2026}}, } @inproceedings{66095, author = {{Skvorc, Urban and van Stein, Niki and Seiler, Moritz and Grimme, Britta and Bäck, Thomas and Trautmann, Heike}}, booktitle = {{Applications of Evolutionary Computation - 29th European Conference, EvoApplications 2026, Held as Part of EvoStar 2026, Toulouse, France, April 8-10, 2026, Proceedings, Part II}}, editor = {{García-Sánchez, Pablo and lvarez, Josefa Díaz and Murphy, Aidan}}, pages = {{183–199}}, publisher = {{Springer}}, title = {{{LLM Driven Design of Continuous Optimization Problems with Controllable High-Level Properties}}}, doi = {{10.1007/978-3-032-23607-4_12}}, volume = {{16525}}, year = {{2026}}, } @inproceedings{66462, abstract = {{Germany is experiencing a shortage of teachers, a situation that is particularly evident in the domain of technical vocational education. In response to this, various pathways into vocational teacher education have been established. These pathways are diverse in their nature but all lead to the same teacher degree as traditional teacher education. In two interview studies (n=22 (pre service) vocational teachers), initial motives of entering teacher education (based on FIT-Choice) as well as retrospective views on the career choice after entering the profession (based on PLP model) are analyzed. The present study compares the reflective views of pre-service teachers and career-changing in-service teachers (CCIT). Although both groups generally perceive their career choice positively, the results raise questions about why CCITs did not enter the field of teacher education in the first place. Additionally, the analysis allows for further discussion about existing teacher education programs in times of teacher shortage.}}, author = {{Vernholz, Mats and Jonas-Ahrend, Gabriela and Temmen, Katrin}}, keywords = {{vocational teacher education, teacher shortage, career-changing teachers, teacher reflections}}, location = {{Boat Viking Glory}}, title = {{{Different Pathways, Shared Challenges: Reflections on Entering Vocational Teaching in Germany }}}, year = {{2026}}, } @article{66632, abstract = {{Three‐dimensional (3D) assemblies of gold nanoparticles (AuNPs) offer a rich platform for plasmonic coupling and near‐field engineering, yet their optical behavior is often complex due to structural disorder and fabrication‐induced variability. Here, we present a systematic optical investigation of large‐scale 3D AuNP assemblies fabricated via meniscus‐guided assembly, focusing on the reproducibility, spatial uniformity, and mode evolution of their plasmonic responses. Spatially‐resolved dark‐field scattering measurements reveal that high‐aspect‐ratio AuNP pillars exhibit uniform scattering spectra along their height and across different pillars, despite variations in geometry and structure. Electromagnetic simulations suggest that this robustness arises from a collective many‐particle plasmonic response that remains optically active despite structural perturbations. The corresponding near‐field and surface‐charge distributions remain spatially distributed under representative structural perturbations, consistent with volumetric averaging across the three‐dimensional assembly. Building on this robust platform, we introduce compositional modulation through a core–satellite architecture by incorporating smaller AuNPs. This yields a composition‐dependent spectral redistribution, including the emergence of an additional long‐wavelength spectral feature in the core–satellite assemblies. Wavelength‐dependent surface‐enhanced Raman scattering measurements reveal contrasting responses under 633 and 785 nm excitation, reflecting redistribution of local plasmonic coupling pathways. These results provide process‐enabled guidelines for using meniscus‐guided 3D‐nanoprinting to realize robust nanoparticle assemblies.}}, author = {{Devaraj, Vasanthan and Kwak, Sunghyun and Kim, Hyeongjip and Sung, Sang‐Keun and Lee, Jong‐Min and Zentgraf, Thomas and Kim, Won‐Geun}}, issn = {{1863-8880}}, journal = {{Laser & Photonics Reviews}}, publisher = {{Wiley}}, title = {{{Spatially Uniform and Defect‐Tolerant Plasmonic Responses in 3D Printed Gold Nanoparticle Assemblies}}}, doi = {{10.1002/lpor.71686}}, year = {{2026}}, } @inproceedings{66670, author = {{Mensendiek, Carolin and Preuß, Oliver Ludger and Rook, Jeroen and Chicano, Francisco and Whitley, Darrell and Trautmann, Heike}}, booktitle = {{Proceedings of the Genetic and Evolutionary Computation Conference, GECCO 2026, Centro Internacional de Convenciones CIC-ANDE, San Jose, Costa Rica, July 13-17, 2026}}, editor = {{Trujillo, Leonardo and Hu, Ting}}, pages = {{134–142}}, publisher = {{ACM}}, title = {{{Digging to the Ground Truth: Solving Multi-objective Gray-Box Optimization Problems through Hyperplane Elimination}}}, doi = {{10.1145/3795095.3805136}}, year = {{2026}}, } @inbook{66762, author = {{Morrien, Rita}}, booktitle = {{Literatur in Westfalen. Beiträge zur Forschung 22}}, editor = {{Höppner, Stefan and Maxwill, Arnold}}, isbn = {{978-3-8498-2149-4}}, pages = {{429--438}}, publisher = {{Aisthesis Verlag}}, title = {{{"Future Fresko" - Charlotte Kraffts Münsterland-Blog MOMUMENT als dystopische Heimatliteratur}}}, volume = {{22}}, year = {{2026}}, } @article{58438, abstract = {{This study presents a numerical approach using a 3D finite element model to quantify the remaining clamp load of a plastic nut joint after a specific time. The viscoelastic relaxation of a thermoplastic nut, which is predominantly screwed on a welding stud, is described by a material card using Prony Series. Prony Series are derived from experimental dynamical mechanical analysis with different moisture and fiber contents of the thermoplastic. Since plastic nuts usually do not have preformed threads, the increased temperatures and resulting stresses from the thread-forming process are considered in the simulation. An FE model is created and verified by substrate stress relaxation tests. Experimental clamp load measurements with miniature compression load cells verify the clamp load prediction and show a good agreement. The developed model is used to analyze the clamp load distribution within the threads and reveals an almost even distribution within the threads.}}, author = {{Wippermann, Jan and Meschut, Gerson}}, issn = {{0043-2288}}, journal = {{Welding in the World}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Numerical modeling of clamp load relaxation of plastic nuts under varying moisture and fiber contents}}}, doi = {{10.1007/s40194-025-01928-4}}, year = {{2025}}, } @article{58454, abstract = {{Powertrain concepts incorporating renewable energies are an essential element of the energy revolution and increasingly require efficient manufacturing processes for electronic systems. Particularly, the joining of structures to be thermally coupled, such as the battery modules and the thermal management system (TMS), poses new challenges in process design. Factors that limit the process include the increased density, viscosity, and abrasiveness of thermal pastes as well as the pressure sensitivity of battery modules. The research presented aims to systematically investigate the influences of joining parameters on flow behavior, the formation of air inclusions, and the occurring joining forces to understand and systematically optimize the joining process. Employing a test setup following the Closing-Hele-Shaw-Cell, the influence of specific process parameters on the joining process such as the joining speed, joining gap, application pattern, and temperature was investigated for a silicone- and a polyurethane-based thermally conductive paste. The results indicate a high dependency of both the ensuing joining forces and the flow behavior on the parameters investigated. These insights imply a potential systematic parameter optimization and the specific adaptation of the joining process to improve flow behavior and reduce compressive stresses. This can ensure lower component deformations and qualify the process for the employment of cell types with a higher power density, a reduced encapsulation, and lower stiffness while at the same time improving production rates.}}, author = {{Gilich, Julian and Teutenberg, Dominik and Meschut, Gerson and Gröger, B. and Wiebicke, F. and Koch, I. and Gude, M.}}, issn = {{0043-2288}}, journal = {{Welding in the World}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Effects of various process parameters in the joining process on the squeeze flow of highly viscous thermal interface materials}}}, doi = {{10.1007/s40194-025-01929-3}}, year = {{2025}}, } @article{59599, abstract = {{Background: Agility is crucial in game sports, requiring both motor and cognitive skills. Athletes must perceive and process information to adapt movements, yet traditional agility tests often lack cognitive and multidirectional demands. Additionally, modern test systems are mostly stationary. This study evaluated the novel and portable “Functional Agility Square Test” (FAST) for validity, reliability, and usefulness. Methods: To assess discriminant validity, 22 game sports (GS) and 22 non-game sports (NGS) athletes participated in one session. Test–retest reliability was examined with 36 GS athletes (20 female) across three sessions. Participants performed cognitive (FAST_COG), preplanned (FAST_MOT), and randomized (FAST_SAT) reactive change-of-direction tasks, each repeated three times per session. Results: Results showed significantly lower response times (RTs) in GS compared to NGS (p < 0.05). Mean RTs indicated moderate relative reliability (ICC 0.50–0.74), while medians showed moderate to good reliability (ICC 0.59–0.83). Usefulness was evident from the first session (FAST_MOT) or from the third session (FAST_SAT) based on median RTs. Conclusions: Thus, the FAST seems to be valid, reliable, and sensitive for GS-based agility assessment. Its portable setup enables ecologically valid field testing. Future research should further increase task complexity to better simulate game conditions.}}, author = {{Müller, Romina Desiree and Büchel, Daniel and Baumeister, Jochen}}, issn = {{2411-5142}}, journal = {{Journal of Functional Morphology and Kinesiology}}, number = {{2}}, publisher = {{MDPI AG}}, title = {{{Validation, Reliability, and Usefulness of the Functional Agility Square Test [FAST]}}}, doi = {{10.3390/jfmk10020126}}, volume = {{10}}, year = {{2025}}, } @article{59805, abstract = {{The LLC converter achieves the highest efficiency in resonant operation. Conventionally, the input DC-link voltage is controlled to operate the LLC converter at resonance for the given operating point. However, the DC-link capacitor voltage shows a low-frequency voltage ripple (typically the second harmonic of grid frequency) in cascaded converters so that the LLC has to adapt its switching frequency within the grid period. Conventionally, the LLC converter operates 50% of the time above the resonant frequency of 40 kHz and 50% below resonance. Both operating conditions cause additional losses. However, experimental measurements indicate that the below-resonance operation causes significantly higher losses than above-resonance operation due to much higher primary and secondary transformer currents. It is better to increase the DC-link voltage by 30% of the peak-to-peak low-frequency voltage ripple to mostly avoid below-resonance operation (i.e., from 650 V to 680 V in this case). With the proposed control, the LLC converter operates about 75% of time over resonance and only 25% of time below resonance. The overall efficiency increases from 97.66% to 97.7% for the average operating point with an 80% load current. This corresponds to a 2% total loss reduction. Finally, the peak resonance capacitor voltage decreases from 910 V to 790 V (−13%).}}, author = {{Unruh, Roland and Böcker, Joachim and Schafmeister, Frank}}, issn = {{2079-9292}}, journal = {{Electronics}}, keywords = {{adaptive DC-link voltage, cascaded H-bridge, resonant operation, Full-Bridge Converter, loss minimization, LLC Resonant Converter, peak capacitor voltage reduction}}, number = {{8}}, publisher = {{MDPI AG}}, title = {{{Adaptive DC-Link Voltage Control for 22 kW, 40 kHz LLC Resonant Converter Considering Low-Frequency Voltage Ripple}}}, doi = {{10.3390/electronics14081517}}, volume = {{14}}, year = {{2025}}, } @article{58531, abstract = {{Zusammenfassung Die fortschreitende Digitalisierung stellt Schulen vor Herausforderungen, insbesondere bei der Nutzung digitaler Medien in unterrichtlichen Lehr- und Lernprozessen mit dem Ziel, den (über-) fachlichen Kompetenzerwerb aller Schüler*innen zu unterstützen. Betrachtet man die digitalen Kompetenzen, zeigt sich, dass auch diese sozialen Disparitäten unterliegen. Dennoch lassen sich in ICILS organisational resiliente Schulen identifizieren, deren Schüler*innen trotz herausfordernder Schüler*innenkomposition überdurchschnittliche digitale Kompetenzen erreichen. Studien, die fachspezifische Kompetenzen untersuchen, lassen erkennen, dass organisational resiliente Schulen gemeinsame Merkmale aufweisen. Ein Merkmal, das in diesem Zusammenhang bedeutsam erscheint, ist die Gestaltung von Unterrichtsqualitätsmerkmalen. Digitale Kompetenzen erscheinen diesbezüglich unerforscht, sodass der vorliegende Beitrag mittels Daten aus der BMBF-geförderten qualitativen ICILS-Vertiefungsstudie UneS-ICILS 2018 (Unerwartbar erfolgreiche Schulen im digitalen Wandel) Basisdimensionen von Unterrichtsqualität an resilienten Schulen in Bezug auf digitale Kompetenzen untersucht. Für die Analyse wurden 22 leitfadengestützte Interviews mit Lehrkräften und sieben Gruppeninterviews mit Schüler*innen im Hinblick auf eine ‚effiziente Klassenführung‘, ‚kognitive Aktivierung‘ und ‚konstruktive Unterstützung‘ inhaltsanalytisch ausgewertet. Im Ergebnis zeigt die Analyse der Dimension ‚effiziente Klassenführung‘, dass sich u. a. die Organisation und Struktur mittels digitaler Medien wie beispielsweise durch den Einsatz digitaler Lernplattformen als bedeutende Faktoren herausstellen. Hinsichtlich der ‚kognitiven Aktivierung‘ wird der Einsatz digitaler Tools für das Anknüpfen an individuelles Vorwissen als bedeutend hervorgehoben. Darüber hinaus zeigt sich bei der Dimension ‚konstruktive Unterstützung‘ die Förderung des selbstgesteuerten Lernens und das Ausbilden von Unterstützungsstrukturen zum (kooperativen) Lernen mit digitalen Medien als bedeutsam. Induktiv ergänzt wurde die Dimension ‚Inhaltswahl und selektive Fokussierung‘, die die hohe Relevanz des Erwerbs digitaler Kompetenzen im Unterricht an den resilienten Schulen verdeutlicht.}}, author = {{Drossel, Kerstin and Niemann, Jan and Oldak, Anna and Eickelmann, Birgit}}, issn = {{2190-6890}}, journal = {{Zeitschrift für Bildungsforschung}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Basisdimensionen der Unterrichtsqualität im Kontext des Erwerbs digitaler Kompetenzen an resilienten Schulen}}}, doi = {{10.1007/s35834-024-00468-z}}, year = {{2025}}, } @article{58613, abstract = {{Self-assembled DNA origami lattices on silicon oxide surfaces have great potential to serve as masks in molecular lithography. However, silicon oxide surfaces come in many different forms and the type and history of the silicon oxide has a large effect on its physicochemical surface properties. Therefore, we here investigate DNA origami lattice formation on differently fabricated SiOx films on silicon wafers after wet-chemical oxidation by RCA1. Despite having similar oxide compositions and hydroxylation states, of all surfaces tested, only thermally grown SiOx performs similarly well as native oxide. For the other SiOx films deposited by plasma-enhanced chemical vapor deposition and magnetron sputtering, DNA origami adsorption is strongly suppressed. This is attributed to an increased surface roughness and a lower oxide density, respectively. Our results demonstrate that the employed SiOx surface may decide over the outcome of an experiment and should be considered as an additional parameter that may require optimization and fine-tuning before high-quality lattices can be assembled. In particular, our observations suggest that efficient DNA origami lattice assembly on SiOx surfaces requires a low surface roughness and a high oxide density.}}, author = {{Pothineni, Bhanu Kiran and Theile-Rasche, Chantal and Müller, Hendrik and Grundmeier, Guido and de los Arcos de Pedro, Maria Teresa and Keller, Adrian}}, journal = {{Chemistry – A European Journal}}, pages = {{e202404108}}, title = {{{DNA Origami Adsorption and Lattice Formation on Different SiOx Surfaces}}}, doi = {{10.1002/chem.202404108}}, year = {{2025}}, } @article{60179, author = {{Weber, KS and Schlesinger, S and Goletzke, J and Straßburger, K and Zaharia, OP and Trenkamp, S and Wagner, R and Lieb, W and Buyken, Anette and Roden, M and Herder, C and group, GDS}}, issn = {{1475-2840}}, journal = {{Cardiovasc Diabetol}}, number = {{1}}, pages = {{53}}, title = {{{Associations of carbohydrate quality and cardiovascular risk factors vary among diabetes subtypes.}}}, volume = {{24}}, year = {{2025}}, } @article{60180, author = {{Kranz, RM and Kettler, C and Anand, C and Koeder, C and Husain, S and Schoch, N and Buyken, Anette and Englert, H}}, issn = {{0260-1060}}, journal = {{Nutr Health}}, number = {{1}}, pages = {{175--186}}, title = {{{Effect of a controlled lifestyle intervention on medication use and costs: The Healthy Lifestyle Community Program (cohort 2).}}}, volume = {{31}}, year = {{2025}}, } @inproceedings{63704, author = {{Wittner, Dominic and Bossek, Jakob}}, booktitle = {{Proceedings of the Genetic and Evolutionary Computation Conference, GECCO 2025, NH Malaga Hotel, Malaga, Spain, July 14-18, 2025}}, editor = {{Filipic, Bogdan}}, pages = {{340–348}}, publisher = {{ACM}}, title = {{{Cluster Prevention in Evolutionary Diversity Optimization for Parallel Machine Scheduling}}}, doi = {{10.1145/3712256.3726357}}, year = {{2025}}, } @article{63710, author = {{Cenikj, Gjorgjina and Petelin, Gasper and Seiler, Moritz and Cenikj, Nikola and Eftimov, Tome}}, journal = {{Swarm Evol. Comput.}}, pages = {{101894}}, title = {{{Landscape features in single-objective continuous optimization: Have we hit a wall in algorithm selection generalization?}}}, doi = {{10.1016/J.SWEVO.2025.101894}}, volume = {{94}}, year = {{2025}}, } @article{63882, author = {{Dinkelbach, Lars and Wudy, Stefan A. and Hartmann, Michaela F. and Libuda, Lars and Föcker, Manuel and Hebebrand, Johannes and Hinney, Anke and Nöthlings, Ute and Alexy, Ute and Grasemann, Corinna and Hirtz, Raphael}}, issn = {{0165-0327}}, journal = {{Journal of Affective Disorders}}, publisher = {{Elsevier BV}}, title = {{{Urinary steroid metabolome shows adrenal, gonadal, and neuroactive steroid dysregulation in adolescents with depressive symptoms}}}, doi = {{10.1016/j.jad.2025.120867}}, volume = {{399}}, year = {{2025}}, } @article{64098, author = {{Scheideler, Christian and Padalkin, Andreas and Kumar, Manish}}, journal = {{Reconfiguration and locomotion with joint movements in the amoebot model. Auton. Robots 49(3): 22 (2025)}}, title = {{{Reconfiguration and locomotion with joint movements in the amoebot model. Auton. Robots 49(3): 22 (2025)}}}, year = {{2025}}, }