@book{65062, author = {{Tröster, Thomas and Marten, Thorsten and Luig, Simon}}, isbn = {{978-3-96780-214-6}}, publisher = {{Forschungsvereinigung Stahlanwendung e.V. (FOSTA)}}, title = {{{Methodische Auswahl hochfester Mehrphasenstähle bezüglich ihrer lokalen und globalen Duktilität}}}, volume = {{P 1447}}, year = {{2025}}, } @inproceedings{62149, abstract = {{The increasing complexity of technical systems requires early, structured verification and validation (V&V). Existing metadata models only map parts of the engineering process and do not enable a continuous chain of effects from requirements to test results. The aim of this publication is to develop a holistic V&V metadata model for the consistent, transparent and machine-processable description and linking of relevant engineering artifacts. In a five-stage research approach, essential model components are derived from literature and are integrated into a holistic model. Initial applications as part of a European research project show the potential of the model for a well-founded effect chain analysis and decision-supporting V&V processes.}}, author = {{Gräßler, Iris and Ebel, Marcel}}, booktitle = {{DS 140: Proceedings of the 36th Symposium Design for X (DFX2025)}}, keywords = {{verification, metadata model, Systems Engineering}}, location = {{Hamburg}}, publisher = {{The Design Society}}, title = {{{Ganzheitliches Metadatenmodel für die Verifikation und Validierung in der Entwicklung komplexer technischer Systeme}}}, doi = {{10.35199/dfx2025.09}}, year = {{2025}}, } @article{60050, abstract = {{Reputation systems to rate companies’ performances remain largely unexplored inresearch and are scarcely used in business-to-business (B2B) practice. Such systemsare essential for businesses seeking trustworthy partners, as they help reduce infor-mation asymmetry, lower buyers’ transaction risks, and allow high-quality serviceproviders to justify premium pricing. Unlike traditional review-based systems in thebusiness-to-consumer (B2C) context, we propose a B2B reputation mechanism inwhich buyers commit to a rating payment before a transaction. Once the buyer final-izes the rating, this payment is executed and recorded on a blockchain as an immu-table, secure ledger. Our system mimics natural trust-building mechanisms with rat-ings that are (1) monetary-based, (2) stake-based, (3) non-aggregated, (4) involvecounter-ratings, (5) selectively sellable, (6) individually comparable, (7) stored ona blockchain, (8) and monitored by a third instance. This system provides a novelapproach to fostering trust in B2B transactions by reducing information asymme-try and transaction risk. We illustrate the mechanism’s application in the consultingsector. Our analysis has identified 23 institutional trust and distrust dimensions thatpromote establishing institutional trust through the proposed mechanism. Qualita-tive interviews suggest that, while complex and challenging to apply, this mecha-nism can foster trust in B2B transactions. Given the low maturity in the applicationdomain—rating professional business services with business reputation systems—and solution domain—using monetary stakes for ratings, this system stands as apotential invention.}}, author = {{Hemmrich, Simon and Nissen, Volker and Beverungen, Daniel and Pauls, Josias Daniel Miño}}, journal = {{Information Systems and e-Business Management}}, keywords = {{Information asymmetry, Trust, Reputation system, Monetary rating, Blockchain, Consulting}}, number = {{1}}, publisher = {{Springer}}, title = {{{Blockchain‑based reputation systemsfor business‑to‑business services: designing a reputation mechanism to reduce information asymmetry in professional consulting}}}, doi = {{https://doi.org/10.1007/s10257-025-00702-9}}, volume = {{23}}, year = {{2025}}, } @inproceedings{60285, abstract = {{This paper examines the impact of a rotationally superimposed punch stroke on the binding mechanisms of clinched joints of aluminum sheets. As part of the development of a method for ensuring the versatility of clinching, an additional rotational movement of the punch was introduced as a control variable to influence friction in the mechanical joining process. The effect of rotational superimposition on the force-displacement curve of the clinching processes was investigated using four test variants with different kinematics. The primary objective was to evaluate the binding mechanisms that maintain the integrity of the clinched joint. To evaluate the force closure of the resulting joint, two testing methods were employed throughout the course of the research, non-destructive resistance measurement using four-wire sensing method and destructive torsion testing. A crucial factor influencing the efficacy of the process is surface cleanliness, as contaminants between joining partners can impede the effectiveness of the clinched joint. Therefore, all specimens were meticulously cleaned prior to experimentation. This method exhibits promising potential in creating clinched joints that align with the demands of flexible manufacturing environments.}}, author = {{Lüder, Stephan and Wolf, Eugen and Schmale, Hans Christian and Brosius, Alexander}}, booktitle = {{MATEC Web of Conferences}}, issn = {{2261-236X}}, keywords = {{Joining, Sheet Metal, Tribology, Clinching}}, location = {{Lisbon}}, publisher = {{EDP Sciences}}, title = {{{Investigation of the impact of a rotationally superimposed punch stroke on the binding mechanisms of a clinched joint}}}, doi = {{10.1051/matecconf/202540801086}}, volume = {{408}}, year = {{2025}}, } @inproceedings{50272, abstract = {{Despite the fundamental role the Quantum Satisfiability (QSAT) problem has played in quantum complexity theory, a central question remains open: At which local dimension does the complexity of QSAT transition from "easy" to "hard"? Here, we study QSAT with each constraint acting on a $k$-dimensional and $l$-dimensional qudit pair, denoted $(k,l)$-QSAT. Our first main result shows that, surprisingly, QSAT on qubits can remain $\mathsf{QMA}_1$-hard, in that $(2,5)$-QSAT is $\mathsf{QMA}_1$-complete. In contrast, $2$-SAT on qubits is well-known to be poly-time solvable [Bravyi, 2006]. Our second main result proves that $(3,d)$-QSAT on the 1D line with $d\in O(1)$ is also $\mathsf{QMA}_1$-hard. Finally, we initiate the study of 1D $(2,d)$-QSAT by giving a frustration-free 1D Hamiltonian with a unique, entangled ground state. Our first result uses a direct embedding, combining a novel clock construction with the 2D circuit-to-Hamiltonian construction of [Gosset, Nagaj, 2013]. Of note is a new simplified and analytic proof for the latter (as opposed to a partially numeric proof in [GN13]). This exploits Unitary Labelled Graphs [Bausch, Cubitt, Ozols, 2017] together with a new "Nullspace Connection Lemma", allowing us to break low energy analyses into small patches of projectors, and to improve the soundness analysis of [GN13] from $\Omega(1/T^6)$ to $\Omega(1/T^2)$, for $T$ the number of gates. Our second result goes via black-box reduction: Given an arbitrary 1D Hamiltonian $H$ on $d'$-dimensional qudits, we show how to embed it into an effective null-space of a 1D $(3,d)$-QSAT instance, for $d\in O(1)$. Our approach may be viewed as a weaker notion of "simulation" (\`a la [Bravyi, Hastings 2017], [Cubitt, Montanaro, Piddock 2018]). As far as we are aware, this gives the first "black-box simulation"-based $\mathsf{QMA}_1$-hardness result, i.e. for frustration-free Hamiltonians.}}, author = {{Rudolph, Dorian and Gharibian, Sevag and Nagaj, Daniel}}, booktitle = {{16th Innovations in Theoretical Computer Science (ITCS)}}, number = {{85}}, pages = {{1--24}}, title = {{{Quantum 2-SAT on low dimensional systems is $\mathsf{QMA}_1$-complete: Direct embeddings and black-box simulation}}}, doi = {{10.4230/LIPIcs.ITCS.2025.85}}, volume = {{325}}, year = {{2025}}, } @book{66455, abstract = {{Sexualisierte Diskriminierung und Gewalt galten in Hochschulen lange als Tabu und wurden vor allem durch Geschlechterforscher*innen und Gleichstellungsbeauftragte thematisiert. Mit der weltweiten #MeToo-Bewegung erhielt die Debatte um sexualisierte Diskriminierung und Gewalt in der Wissenschaft eine neue Dynamik. Der Band, der aus einer zweiteiligen Tagung an der Ruhr-Universität Bochum und der Universität Paderborn hervorgegangen ist, legt einen Schwerpunkt auf die historischen Dimensionen des Themenfeldes. Die Institution Hochschule und die Traditionslinien sowie die (Abwehr-)Diskurse zu sexualisierter Diskriminierung und Gewalt werden beleuchtet, die auch die gegenwärtigen Verhandlungen und (Nicht-)Bearbeitungen prägen. Der Band gibt Einblicke in die juristische Debatte und den gegenwärtigen Forschungsstand. Vorgestellt werden zudem Analysen und Präventionskampagnen aus der universitären Praxis, die auf unterschiedliche soziale Räume und die Spezifika verschiedener Fachkulturen eingehen.}}, editor = {{von Miquel, Beate and Mahs, Claudia and Langer, Antje and Riegraf, Birgitt and Sabisch, Katja and Pilgrim, Irmgard}}, isbn = {{9783658455149}}, issn = {{2512-0883}}, publisher = {{Springer Fachmedien Wiesbaden}}, title = {{{#Me Too in Science}}}, doi = {{10.1007/978-3-658-45515-6}}, year = {{2025}}, } @misc{63608, author = {{Caruso, Carina}}, booktitle = {{Religionspädagogische Beiträge}}, number = {{2}}, pages = {{Rez. 12, 1--2}}, title = {{{Rezension: Yagdi, Senol (2025): Der religionspädagogische Habitus islamischer Religionslehrer*innen. Eine rekonstruktive Studie zu kollektiven Orientierungsrahmen im Kontext (inter-)religiösen Lernens. Wiesbaden: Springer, ISBN 978-3-17-044939-978-3-658-48073-8, 319 Seiten.}}}, doi = {{https://doi.org/10.20377/rpb-1982}}, volume = {{48}}, year = {{2025}}, } @inbook{48274, author = {{Foerster, Anne}}, booktitle = {{Emotionen im Krieg - Krieg der Emotionen}}, editor = {{Quaas, Franziska and Raum, Theresia}}, pages = {{139--158}}, publisher = {{Franz Steiner Verlag}}, title = {{{Freudig in die Schlacht - Emotionen als Codes für die recta intentio im gerechten Krieg (8.- 10. Jahrhundert)}}}, year = {{2025}}, } @article{66768, abstract = {{Das schulische Wohlbefinden von Schüler*innen kann durch die Gestaltung der Lernumgebung positiv beeinflusst werden. Daher gilt es, entsprechend wirkungsvolle Unterrichtsmerkmale zu identifizieren. Am Beispiel der Laborschule Bielefeld, einer Versuchsschule des Landes Nordrhein-Westfalen wurde der Einfluss der Merkmale Wertschätzung durch die Lehrkräfte, individuelle Unterstützung, stärkenorientierte Diagnostik sowie unterrichtsbezogene Partizipation auf das schulische Wohlbefinden von Schüler*innen aus inklusiven Lerngruppen der Jahrgangsstufen 6 bis 8 untersucht. Die Mehrebenenanalysen zeigen, dass die untersuchten Unterrichtsmerkmale das schulische Wohlbefinden positiv beeinflussen. Der Effekt einzelner Unterrichtsmerkmale verändert sich teilweise über die Jahrgangsstufen.}}, author = {{Marker, Rabea and Kullmann, Harry and Zentarra, Dominik and Geist, Sabine and Lütje-Klose, Birgit}}, issn = {{0044-3247}}, journal = {{Zeitschrift für Pädagogik}}, keywords = {{Selbsteinschätzung, Wertschätzung, Wohlbefinden, Pädagogische Diagnostik, Schule, Schuljahr 6, Schuljahr 7, Schuljahr 8, Sekundarstufe I, Laborschule, Lehrer, Schüler, Individualisierung, Lerngruppe, Unterrichtsgestaltung, Mitbestimmung, Empirische Untersuchung, Fragebogen, Längsschnittuntersuchung, Mehrebenenanalyse, Inklusion, Einflussfaktor, Unterstützung, Bielefeld, Deutschland}}, pages = {{530--554}}, title = {{{Schulisches Wohlbefinden von Schüler*innen der Sekundarstufe I in inklusiven Lerngruppen – Analysen zum Entwicklungsverlauf an der Laborschule Bielefeld}}}, doi = {{https://doi.org/10.3262/ZP2504530}}, volume = {{71}}, year = {{2025}}, } @misc{48363, author = {{Foerster, Anne}}, booktitle = {{Women in Early Medieval England}}, editor = {{Butler, Emily and Dumitrescu, Irina}}, publisher = {{Springer Textbook}}, title = {{{The Swineherd’s Wife who Scolded the King}}}, year = {{2024}}, } @misc{48362, author = {{Foerster, Anne}}, booktitle = {{Women in Early Medieval England}}, editor = {{Butler, Emily and Dumitrescu, Irina}}, publisher = {{Springer Textbook}}, title = {{{Eadburh of Wessex}}}, year = {{2024}}, } @misc{48364, author = {{Foerster, Anne}}, booktitle = {{Women in Early Medieval England}}, editor = {{Butler, Emily and Dumitrescu, Irina}}, publisher = {{Springer Textbook}}, title = {{{Seaxburh}}}, year = {{2024}}, } @inbook{41850, author = {{Silvestri, Marco}}, booktitle = {{Bergbau und Hausbau}}, title = {{{Struktur und Sonderbauten der Silberbergbaustädte des 16. Jahrhunderts. Zur Korrelation von Städtebau und Montanwesen (Potosí und das Erzgebirge)}}}, year = {{2024}}, } @phdthesis{50530, abstract = {{Die Extrusion stellt das mengenmäßig dominante Verarbeitungsverfahren für thermoplastische Kunststoffe dar. Daher gibt es starke Bestrebungen in diesem Bereich hin zu einer höheren Wirtschaftlichkeit, welche beispielsweise durch höheren Massedurchsatz bei gleichbleibender Maschinengröße erreicht werden kann, oder aber auch im Hinblick auf eine Kreislaufwirtschaft die Bestrebung hin zu einer materialschonenden Verarbeitung. Beide Bestrebungen erfordern spezielle Schneckenkonzepte. Hierunter fallenWave- Schnecken, welche in beiden Bereichen ein vorteilhaftes Prozessverhalten aufzeigen sollen. Die Auslegung von Wave-Schnecken erfordert jedoch ein stärkeres Verständnis über das geometrieabhängige Prozessverhalten in der Extrusion. Im Rahmen der Dissertation werden zwei Themengebiete angegangen. Das erste Thema ist die Herleitung einer Methode zur Charakterisierung des Abbauverhaltens von Thermoplasten sowie die Nutzung der Charakterisierung als Vorhersagemodell. Das zweite Thema behandelt die Auslegung von Wave-Schnecken basierend auf numerischen Simulationen samt Validierung anhand von sieben Energy-Transfer-Schnecken im Vergleich zu drei konventionellen Schnecken. Hierbei werden unter anderem der Materialabbau, die thermische und die stoffliche Homogenität betrachtet, um ein umfassendes Bild über das Prozessverhalten der Schnecken zu schaffen. Die vorgestellten Untersuchungen dienen schlussendlich zu einer Bestätigung des vorteilhaften Prozessverhaltens von Wave-Schnecken.}}, author = {{Schall, Christoph Wilhelm Theodor}}, isbn = {{978-3-8440-9334-6}}, pages = {{224}}, publisher = {{Shaker Verlag}}, title = {{{Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken}}}, volume = {{Band 2/2024}}, year = {{2024}}, } @article{50798, abstract = {{Abstract Background An infection with SARS-CoV-2 can lead to a variety of symptoms and complications, which can impair athletic activity. Objective We aimed to assess the clinical symptom patterns, diagnostic findings, and the extent of impairment in sport practice in a large cohort of athletes infected with SARS-CoV-2, both initially after infection and at follow-up. Additionally, we investigated whether baseline factors that may contribute to reduced exercise tolerance at follow-up can be identified. Methods In this prospective, observational, multicenter study, we recruited German COVID elite-athletes (cEAs, n = 444) and COVID non-elite athletes (cNEAs, n = 481) who tested positive for SARS-CoV-2 by PCR (polymerase chain reaction test). Athletes from the federal squad with no evidence of SARS-CoV-2 infection served as healthy controls (EAcon, n = 501). Questionnaires were used to assess load and duration of infectious symptoms, other complaints, exercise tolerance, and duration of training interruption at baseline and at follow-up 6 months after baseline. Diagnostic tests conducted at baseline included resting and exercise electrocardiogram (ECG), echocardiography, spirometry, and blood analyses. Results Most acute and infection-related symptoms and other complaints were more prevalent in cNEA than in cEAs. Compared to cEAs, EAcon had a low symptom load. In cNEAs, female athletes had a higher prevalence of complaints such as palpitations, dizziness, chest pain, myalgia, sleeping disturbances, mood swings, and concentration problems compared to male athletes (p < 0.05). Until follow-up, leading symptoms were drop in performance, concentration problems, and dyspnea on exertion. Female athletes had significantly higher prevalence for symptoms until follow-up compared to male. Pathological findings in ECG, echocardiography, and spirometry, attributed to SARS-CoV-2 infection, were rare in infected athletes. Most athletes reported a training interruption between 2 and 4 weeks (cNEAs: 52.9%, cEAs: 52.4%), while more cNEAs (27.1%) compared to cEAs (5.1%) had a training interruption lasting more than 4 weeks (p < 0.001). At follow-up, 13.8% of cNEAs and 9.9% of cEAs (p = 0.24) reported their current exercise tolerance to be under 70% compared to pre-infection state. A persistent loss of exercise tolerance at follow-up was associated with persistent complaints at baseline, female sex, a longer break in training, and age > 38 years. Periodical dichotomization of the data set showed a higher prevalence of infectious symptoms such as cough, sore throat, and coryza in the second phase of the pandemic, while a number of neuropsychiatric symptoms as well as dyspnea on exertion were less frequent in this period. Conclusions Compared to recreational athletes, elite athletes seem to be at lower risk of being or remaining symptomatic after SARS-CoV-2 infection. It remains to be determined whether persistent complaints after SARS-CoV-2 infection without evidence of accompanying organ damage may have a negative impact on further health and career in athletes. Identifying risk factors for an extended recovery period such as female sex and ongoing neuropsychological symptoms could help to identify athletes, who may require a more cautious approach to rebuilding their training regimen. Trial Registration Number DRKS00023717; 06.15.2021—retrospectively registered. }}, author = {{Widmann, Manuel and Gaidai, Roman and Schubert, Isabel and Grummt, Maximilian and Bensen, Lieselotte and Kerling, Arno and Quermann, Anne and Zacher, Jonas and Vollrath, Shirin and Bizjak, Daniel Alexander and Beckendorf, Claudia and Egger, Florian and Hasler, Erik and Mellwig, Klaus-Peter and Fütterer, Cornelia and Wimbauer, Fritz and Vogel, Azin and Schoenfeld, Julia and Wüstenfeld, Jan C. and Kastner, Tom and Barsch, Friedrich and Friedmann-Bette, Birgit and Bloch, Wilhelm and Meyer, Tim and Mayer, Frank and Wolfarth, Bernd and Roecker, Kai and Reinsberger, Claus and Haller, Bernhard and Niess, Andreas M. and Birnbaum, Mike Peter and Burgstahler, Christof and Cassel, Michael and Deibert, Peter and Esefeld, Katrin and Erz, Gunnar and Greiss, Franziska and Halle, Martin and Hesse, Judith and Keller, Karsten and Kopp, Christine and Matits, Lynn and Predel, Hans Georg and Rüdrich, Peter and Schneider, Gerald and Stapmanns, Philipp and Steinacker, Jürgen Michael and Szekessy, Sarah and Venhorst, Andreas and Zapf, Stephanie and Zickwolf, Christian}}, issn = {{0112-1642}}, journal = {{Sports Medicine}}, keywords = {{Physical Therapy, Sports Therapy and Rehabilitation, Orthopedics and Sports Medicine}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{COVID-19 in Female and Male Athletes: Symptoms, Clinical Findings, Outcome, and Prolonged Exercise Intolerance—A Prospective, Observational, Multicenter Cohort Study (CoSmo-S)}}}, doi = {{10.1007/s40279-023-01976-0}}, year = {{2024}}, } @article{50829, author = {{Heinisch, Nils and Köcher, Nikolas and Bauch, David and Schumacher, Stefan}}, issn = {{2643-1564}}, journal = {{Physical Review Research}}, number = {{1}}, publisher = {{American Physical Society (APS)}}, title = {{{Swing-up dynamics in quantum emitter cavity systems: Near ideal single photons and entangled photon pairs}}}, doi = {{10.1103/PhysRevResearch.6.L012017}}, volume = {{6}}, year = {{2024}}, } @article{49772, author = {{Huybrechts, Yves and Karaca, Resul}}, issn = {{1866-5268}}, journal = {{Synergies Pays germanophones}}, pages = {{119--131}}, publisher = {{GERFLINT}}, title = {{{BelgienNet – une plateforme pour l’accès aux langues et cultures de la Belgique}}}, volume = {{16}}, year = {{2024}}, } @inbook{52538, abstract = {{Twitter ist jetzt X und befindet sich auf dem absteigenden Ast. Auf diesem Ast sitzt Facebook bereits seit längerem. Der Kurzvideodienst Vine, Vorgänger von TikTok, ist Geschichte. Und auch bei Google klingeln die Alarmglocken angesichts der „neuen“ Konkurrenz durch Microsoft und ChatGPT. Umso dringlicher wird also die Historisierung der „sozialen Medien“, das heißt, sie in ihren historischen Kontext einzuordnen und ihren Mythos zu entzaubern. Dabei wartet das Vorhaben mit einer doppelten Herausforderung auf: Erstens, dass es sich bei den Unternehmen der Branche und zweitens auch bei den dort gebildeten Gemeinschaften um recht flüchtige, wandelhaften Gestalten handelt. Scheitern und Wandel ist Teil der „sozialen Medien“ – und sei es nur in der schnellen Abfolge der Moden des „nächsten großen Dings“. Dementsprechend versucht dieser Beitrag mit einem systematischeren Ansatz als dem der gesellschaftlichen Selbstbeschreibung, die Entwicklung des sozio-digitalen Phänomens „soziale Medien“ in dessen Zeitkontext einzuordnen.}}, author = {{Schmitt, Martin}}, booktitle = {{Soziale Medien – wie sie wurden, was sie sind}}, keywords = {{Digitalgeschichte, Soziale Medien, Technikgeschichte, Wirtschaftsgeschichte, Digitalisierung, Twitter, Facebook, Meta}}, publisher = {{Bundeszentrale für politische Bildung}}, title = {{{Alles geht? Die jüngste Geschichte der „sozialen Medien“. Zwischen Wirtschaft und Gemeinschaft}}}, year = {{2024}}, } @article{49905, abstract = {{For 0 ≤ t ≤ r let m(t, r) be the maximum number s such that every t-edge-connected r-graph has s pairwise disjoint perfect matchings. There are only a few values of m(t, r) known, for instance m(3, 3) = m(4, r) = 1, and m(t, r) ≤ r − 2 for all t  = 5, and m(t, r) ≤ r − 3 if r is even. We prove that m(2l, r) ≤ 3l − 6 for every l ≥ 3 and r ≥ 2l.}}, author = {{Ma, Yulai and Mattiolo, Davide and Steffen, Eckhard and Wolf, Isaak Hieronymus}}, issn = {{0209-9683}}, journal = {{Combinatorica}}, keywords = {{Computational Mathematics, Discrete Mathematics and Combinatorics}}, pages = {{429--440}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Edge-Connectivity and Pairwise Disjoint Perfect Matchings in Regular Graphs}}}, doi = {{10.1007/s00493-023-00078-9}}, volume = {{44}}, year = {{2024}}, } @phdthesis{53135, author = {{Schadomsky, Michael}}, title = {{{Experimentelle und simulative Analyse der Mischwirkung in Einschneckenextrudern}}}, doi = {{978-3-8440-9334-6}}, year = {{2024}}, }