@book{63178, author = {{Jablonski, Simone}}, isbn = {{9783658477509}}, publisher = {{Springer Fachmedien Wiesbaden}}, title = {{{Modelling, Argumentation and Problem-Solving in the Context of Outdoor Mathematics}}}, doi = {{10.1007/978-3-658-47751-6}}, year = {{2025}}, } @inbook{63212, author = {{Riese, Josef and Reinhold, Peter}}, booktitle = {{Handbuch Lehrerinnen- und Lehrerbildung}}, editor = {{Cramer, Colin and König, Johannes and Rothland, Martin}}, isbn = {{978-3-8365-6544-6}}, publisher = {{Verlag Julius Klinkhardt}}, title = {{{Physik in der Lehrerinnen- und Lehrerbildung - Empirisch fundierte Curricula in einer digitalen Welt}}}, doi = {{10.35468/hblb2025-076}}, year = {{2025}}, } @phdthesis{62766, abstract = {{raditional assessment formats in university-based EFL teacher education programs usually focus on cognitive dispositions rather than on the actual performance of pre-service EFL teachers in everyday teaching situations. This assessment gap is addressed in this thesis by developing and validating a role-play-based simulation (RobS) designed for the summative assessment of pre-service EFL teachers' feedback competence on writing. Drawing on theories from multiple disciplines, such as higher education, medical education, teacher education, educational psychology, and EFL-specific didactics, the RobS is developed as a performance-oriented assessment format. In the RobS, pre-service EFL teachers engage in a feedback conversation with trained actors who portray a standardized learner. Following an argument-based approach to validation, the extent to which the RobS can be considered valid is investigated. Data from multiple studies, focusing on aspects such as authenticity, fairness, reliability, and external validity, are presented. The discussion in the validity argument indicates that the RobS can elicit and assess the performative facet of feedback competence on writing with sufficient confidence. This work contributes a novel, empirically supported assessment framework to teacher education research. Moreover, it presents an approach to address the assessment gap, enabling pre-service EFL teachers to show how they provide feedback, rather than just tell their lecturers about it.}}, author = {{Janzen, Thomas}}, publisher = {{Logos Verlag}}, title = {{{Show, don’t tell - Developing and Validating a Role-Play-Based Simulation (RobS) for the Assessment of Pre-Service EFL Teachers’ Feedback Competence on Writing}}}, doi = {{https://doi.org/10.30819/5994}}, year = {{2025}}, } @inbook{65032, abstract = {{Despite its status as a key enabling technology, the adoption of 5G in industry remains limited, mainly due to a lack of expertise, which can be addressed by incorporating 5G training into vocational schools. Since Augmented Reality (AR) faces similar challenges, it is used as the 5G application. This research aims to determine the extent to which a learning unit using 5G and AR for collaborative work can increase the intention to use these technologies in the vocational setting and gathers the factors that make up 5G acceptance. It is based on the Technology Acceptance Model 2 (TAM2). The sample includes 23 industrial mechanics students who participated in the developed learning unit. All items are scored on seven-tiered Likert scales (0 “totally disagree”; 6 “totally agree”). The results showed a non-significant change in behavioural intention to use 5G, with a mean of 4.95 (SD: 1.18) for the pre-test and 4.43 (SD: 1.68) for the posttest. The change in intention to use AR did not change significantly either, from 3.12 (SD: 1.38) at pre-test to 3.37 (SD: 1.16) at post-test. The factors Perceived Usefulness, Image, and Relevance had the lowest mean scores, indicating areas for targeted improvement. The significant change in Output Quality ratings is likely to reflect initial overestimation by students. The difference in Behavioural Intentions between 5G and AR suggests that AR may not be an effective technology for increasing 5G adoption in educational contexts. One recommendation is to address 5G in the learning unit not only indirectly.}}, author = {{Schäfers, Johannes and Temmen, Katrin}}, booktitle = {{Proceedings of the 27th International Conference on Interactive Collaborative Learning (ICL2024), Volume 4}}, editor = {{Auer, Michael E. and Rüütmann, Tiia}}, isbn = {{9783031835193}}, issn = {{2367-3370}}, keywords = {{5G, Key Technology, TAM · Augmented Reality, VET}}, location = {{Tallinn}}, pages = {{84 – 91}}, publisher = {{Springer Nature Switzerland}}, title = {{{The Influence of an Immersive-Collaborative Learning Unit on the Technology Acceptance of 5G and AR of Industrial Mechanic Students}}}, doi = {{10.1007/978-3-031-83520-9_8}}, volume = {{1281}}, year = {{2025}}, } @article{65057, author = {{Lobner, Laura and Meyer-Hamme, Johannes and Schönhärl, Korinna}}, journal = {{Geschichte in Wissenschaft und Unterricht}}, number = {{76, H. 9/10}}, pages = {{555--571}}, title = {{{Drei Spielfilme über die Wannseekonferenz als Anlass historischen Lernens}}}, year = {{2025}}, } @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}}, } @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{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}}, } @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}}, } @article{52096, author = {{Kamp, Hermann}}, journal = {{Zeitschrift des Aachener Geschichtsvereins }}, pages = {{137--167}}, publisher = {{VERLAGSDRUCKEREI SCHMIDT GMBH}}, title = {{{Zwischen Beutesuche und politischen Ambitionen. Die Normannen an Rhein und Maas zwischen 880 und 892}}}, volume = {{123/124, 2021-2022}}, year = {{2024}}, }