--- _id: '61118' abstract: - lang: eng text: Im Zuge der Digitalisierung erfahren maschinelles Lernen und datengetriebene Methoden derzeit eine große Aufmerksamkeit in Wissenschaft und Industrie. Es fehlt jedoch an Grundlagenwissen und Verständnis, wie die datengetriebenen Methoden der Informatik mit bewährten modellbasierten Ingenieursmethoden wie dem modellbasierten Entwurf in der Mechatronik und Methoden der Regelungstechnik sinnvoll kombiniert werden können, um hybride Modelle zu erhalten. Diese ingenieurwissenschaftlichen Methoden basieren auf physikalischen Verhaltensmodellen, die eine besonders verdichtete und interpretierbare Darstellung von Wissen darstellen und insbesondere kausale Zusammenhänge beschreiben. Für spezifische regelungstechnische Anwendungen gibt es umfangreiches Vorwissen in Form von bekannten Strukturen und Informationen, wie z.B. (Teil-)Modelle oder Parametersätze, die auch bei der Anwendung von Methoden wie dem maschinellen Lernen genutzt werden sollten. Eine solche sinnvolle systematische Verknüpfung ist wissenschaftlich, insbesondere im Hinblick auf die industrielle Anwendung, noch nicht ausreichend untersucht worden und sehr vielversprechend. In diesem Beitrag werden die Ergebnisse der Nachwuchsforschungsgruppe DART – Datengetriebene Methoden in der Regelungstechnik vorgestellt. Das Hauptziel war es, die synergetische Kombination von modell- und datengetriebenen Methoden für regelungstechnische Aufgaben zu erforschen und es werden alle wichtigen Forschungsergebnisse aber auch die verwendeten Grundprinzipien des maschinellen Lernens in diesem Beitrag dargestellt. - lang: eng text: In the course of digitalization, machine learning and data-driven methods are currently receiving a great deal of attention in science and industry. However, there is a lack of basic knowledge and understanding of how data-driven methods in computer science can be meaningfully combined with proven model-based engineering methods such as model-based design in mechatronics and control engineering methods to obtain hybrid models. These engineering methods are based on physical models, which represent a particularly condensed and interpretable representation of knowledge and, in particular, describe causal relationships. For specific control engineering applications, there is extensive prior knowledge in the form of known structures and information, such as (partial) models or parameter sets, which should also be used when applying methods such as machine learning. Such a meaningful systematic connection has not yet been sufficiently investigated scientifically, especially with regard to industrial applications, and is very promising. This contribution presents the results of the DART junior research group – Data-driven methods in control engineering. The main objective was to investigate the synergistic combination of model- and data-driven methods for control engineering tasks, and all important research results as well as the basic principles of machine learning used are presented in this publication. author: - first_name: Julia full_name: Timmermann, Julia id: '15402' last_name: Timmermann - first_name: Ricarda-Samantha full_name: Götte, Ricarda-Samantha id: '43992' last_name: Götte - first_name: Annika full_name: Junker, Annika id: '41470' last_name: Junker orcid: 0009-0002-6475-2503 - first_name: Michael full_name: Hesse, Michael id: '29222' last_name: Hesse - first_name: Luis full_name: Schwarzer, Luis last_name: Schwarzer citation: ama: Timmermann J, Götte R-S, Junker A, Hesse M, Schwarzer L. DART - Datengetriebene Methoden in der Regelungstechnik. Vol Band 430. 1. Auflage. HNI Verlagsschriftenreihe; 2025. doi:10.17619/UNIPB/1-2305 apa: 'Timmermann, J., Götte, R.-S., Junker, A., Hesse, M., & Schwarzer, L. (2025). DART - Datengetriebene Methoden in der Regelungstechnik: Vol. Band 430 (1. Auflage). HNI Verlagsschriftenreihe. https://doi.org/10.17619/UNIPB/1-2305' bibtex: '@book{Timmermann_Götte_Junker_Hesse_Schwarzer_2025, place={Paderborn}, edition={1. Auflage}, title={DART - Datengetriebene Methoden in der Regelungstechnik}, volume={Band 430}, DOI={10.17619/UNIPB/1-2305}, publisher={HNI Verlagsschriftenreihe}, author={Timmermann, Julia and Götte, Ricarda-Samantha and Junker, Annika and Hesse, Michael and Schwarzer, Luis}, year={2025} }' chicago: 'Timmermann, Julia, Ricarda-Samantha Götte, Annika Junker, Michael Hesse, and Luis Schwarzer. DART - Datengetriebene Methoden in der Regelungstechnik. 1. Auflage. Vol. Band 430. Paderborn: HNI Verlagsschriftenreihe, 2025. https://doi.org/10.17619/UNIPB/1-2305.' ieee: 'J. Timmermann, R.-S. Götte, A. Junker, M. Hesse, and L. Schwarzer, DART - Datengetriebene Methoden in der Regelungstechnik, 1. Auflage., vol. Band 430. Paderborn: HNI Verlagsschriftenreihe, 2025.' mla: Timmermann, Julia, et al. DART - Datengetriebene Methoden in der Regelungstechnik. 1. Auflage, vol. Band 430, HNI Verlagsschriftenreihe, 2025, doi:10.17619/UNIPB/1-2305. short: J. Timmermann, R.-S. Götte, A. Junker, M. Hesse, L. Schwarzer, DART - Datengetriebene Methoden in der Regelungstechnik, 1. Auflage, HNI Verlagsschriftenreihe, Paderborn, 2025. date_created: 2025-09-03T09:35:35Z date_updated: 2026-04-01T06:14:00Z department: - _id: '880' - _id: '153' doi: 10.17619/UNIPB/1-2305 edition: 1. Auflage language: - iso: ger main_file_link: - open_access: '1' url: https://digital.ub.uni-paderborn.de/doi/10.17619/UNIPB/1-2305 oa: '1' place: Paderborn publication_status: published publisher: HNI Verlagsschriftenreihe status: public title: DART - Datengetriebene Methoden in der Regelungstechnik type: book user_id: '41470' volume: Band 430 year: '2025' ... --- _id: '60050' abstract: - lang: eng text: 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. article_type: original author: - first_name: Simon full_name: Hemmrich, Simon id: '83557' last_name: Hemmrich - first_name: Volker full_name: Nissen, Volker last_name: Nissen - first_name: Daniel full_name: Beverungen, Daniel id: '59677' last_name: Beverungen - first_name: Josias Daniel Miño full_name: Pauls, Josias Daniel Miño last_name: Pauls citation: ama: 'Hemmrich S, Nissen V, Beverungen D, Pauls JDM. Blockchain‑based reputation systemsfor business‑to‑business services: designing a reputation mechanism to reduce information asymmetry in professional consulting. Information Systems and e-Business Management. 2025;23(1). doi:https://doi.org/10.1007/s10257-025-00702-9' apa: 'Hemmrich, S., Nissen, V., Beverungen, D., & Pauls, J. D. M. (2025). Blockchain‑based reputation systemsfor business‑to‑business services: designing a reputation mechanism to reduce information asymmetry in professional consulting. Information Systems and E-Business Management, 23(1). https://doi.org/10.1007/s10257-025-00702-9' bibtex: '@article{Hemmrich_Nissen_Beverungen_Pauls_2025, title={Blockchain‑based reputation systemsfor business‑to‑business services: designing a reputation mechanism to reduce information asymmetry in professional consulting}, volume={23}, DOI={https://doi.org/10.1007/s10257-025-00702-9}, number={1}, journal={Information Systems and e-Business Management}, publisher={Springer}, author={Hemmrich, Simon and Nissen, Volker and Beverungen, Daniel and Pauls, Josias Daniel Miño}, year={2025} }' chicago: 'Hemmrich, Simon, Volker Nissen, Daniel Beverungen, and Josias Daniel Miño Pauls. “Blockchain‑based Reputation Systemsfor Business‑to‑business Services: Designing a Reputation Mechanism to Reduce Information Asymmetry in Professional Consulting.” Information Systems and E-Business Management 23, no. 1 (2025). https://doi.org/10.1007/s10257-025-00702-9.' ieee: 'S. Hemmrich, V. Nissen, D. Beverungen, and J. D. M. Pauls, “Blockchain‑based reputation systemsfor business‑to‑business services: designing a reputation mechanism to reduce information asymmetry in professional consulting,” Information Systems and e-Business Management, vol. 23, no. 1, 2025, doi: https://doi.org/10.1007/s10257-025-00702-9.' mla: 'Hemmrich, Simon, et al. “Blockchain‑based Reputation Systemsfor Business‑to‑business Services: Designing a Reputation Mechanism to Reduce Information Asymmetry in Professional Consulting.” Information Systems and E-Business Management, vol. 23, no. 1, Springer, 2025, doi:https://doi.org/10.1007/s10257-025-00702-9.' short: S. Hemmrich, V. Nissen, D. Beverungen, J.D.M. Pauls, Information Systems and E-Business Management 23 (2025). date_created: 2025-05-28T08:12:28Z date_updated: 2026-04-02T04:32:13Z ddc: - '000' department: - _id: '195' doi: https://doi.org/10.1007/s10257-025-00702-9 external_id: unknown: - https://doi.org/10.1007/s10257-025-00702-9 file: - access_level: closed content_type: application/pdf creator: hemmrich date_created: 2025-05-28T08:05:18Z date_updated: 2025-05-28T08:05:18Z file_id: '60051' file_name: Hemmrich_et_al-2025-Information_Systems_and_e-Business_Management.pdf file_size: 1440251 relation: main_file success: 1 file_date_updated: 2025-05-28T08:05:18Z has_accepted_license: '1' intvolume: ' 23' issue: '1' jel: - D81 - D82 - L86 - L10 - M30 keyword: - Information asymmetry - Trust - Reputation system - Monetary rating - Blockchain - Consulting language: - iso: eng main_file_link: - open_access: '1' url: https://link.springer.com/epdf/10.1007/s10257-025-00702-9?sharing_token=fOiWqZx_ScKFAKjxu5UqWPe4RwlQNchNByi7wbcMAY6mjxpZFPB3OtpVT0rAZf9eEBt3_qXIVcZ67l3R9JVYasmuCsIimzE-xfP0N5Rimun248j0jFOnL1eBu4rypKSDFnbmR3kJ5xx-HLnCXvPvQPwpm09qOkS9GSNsiG-du60%3D oa: '1' publication: Information Systems and e-Business Management publication_status: published publisher: Springer quality_controlled: '1' status: public title: 'Blockchain‑based reputation systemsfor business‑to‑business services: designing a reputation mechanism to reduce information asymmetry in professional consulting' type: journal_article user_id: '83557' volume: 23 year: '2025' ... --- _id: '64803' abstract: - lang: eng text: "Nowadays ultrasound technology is established in various fields of application like industrial production or medical technology. Besides high power ultrasound applications like ultrasonic cleaning and ultrasonic welding, which are often not strongly restricted regarding their weight, costs, and construction space, there are many applications in the low to medium power range like handheld surgical instruments, medical inhalers, or ultrasonic cutters. For the latter there is often a strong demand for low weight and construction space and low costs to be competitive in mass production. Another challenge that arises from the RoHS-directive [1] is, that new ultrasonic devices should avoid the use of lead-containing PZT-materials. Against this background there is a demand for lead-free, small and lightweight and cost-effective ultrasonic transducers.\r\nIn many of the above-mentioned applications, pre-stressed Bolted-Langevine-Transducers (BLT) based on lead-containing PZT-materials are established to generate ultrasonic vibrations. These are quite advantageous in many ways and can be built tailored to each application and even for high power of thousands of watts. But due to the required steps during their manufacturing process (machining parts, assembly, pre-stressing, frequency tuning, …), these transducers remain expensive. Furthermore, due to the operation in resonance, the construction space of these transducers is linked to their wavelength and cannot be reduced remarkably.\r\nFor these reasons, our aim is to present an innovative lead-free ultrasonic transducer for low to medium power applications, that is based on bending vibrations instead of longitudinal vibrations. This design enables to build very small transducers. Furthermore, due to their simple construction, these transducers can be built at low manufacturing costs and are well suited for industrial mass production. The use of lead-free piezoelectric materials makes this transducer design ready for future applications.\r\nIn our contribution we will present the model-based design of a lead-free 30 kHz bending transducer for applications up to 10 W. Furthermore, the comprehensive experimental analysis of this transducer-prototype in applications like mist generation or ultrasonic drilling will be presented. The results will be compared to a PZT-based bending transducer and a classical BLT to show the potential and limits of these kind of transducers and lead-free materials.\r\n" author: - first_name: Peter full_name: Bornmann, Peter last_name: Bornmann - first_name: Walter full_name: Littmann, Walter last_name: Littmann - first_name: Claus full_name: Scheidemann, Claus id: '38259' last_name: Scheidemann - first_name: Tobias full_name: Hemsel, Tobias id: '210' last_name: Hemsel citation: ama: 'Bornmann P, Littmann W, Scheidemann C, Hemsel T. Innovative lead-free ultrasonic bending transducers for low to medium power applications. In: ; 2025.' apa: Bornmann, P., Littmann, W., Scheidemann, C., & Hemsel, T. (2025). Innovative lead-free ultrasonic bending transducers for low to medium power applications. International Congress on Ultrasonics (ICU), Paderborn, Germany. bibtex: '@inproceedings{Bornmann_Littmann_Scheidemann_Hemsel_2025, title={Innovative lead-free ultrasonic bending transducers for low to medium power applications}, author={Bornmann, Peter and Littmann, Walter and Scheidemann, Claus and Hemsel, Tobias}, year={2025} }' chicago: Bornmann, Peter, Walter Littmann, Claus Scheidemann, and Tobias Hemsel. “Innovative Lead-Free Ultrasonic Bending Transducers for Low to Medium Power Applications,” 2025. ieee: P. Bornmann, W. Littmann, C. Scheidemann, and T. Hemsel, “Innovative lead-free ultrasonic bending transducers for low to medium power applications,” presented at the International Congress on Ultrasonics (ICU), Paderborn, Germany, 2025. mla: Bornmann, Peter, et al. Innovative Lead-Free Ultrasonic Bending Transducers for Low to Medium Power Applications. 2025. short: 'P. Bornmann, W. Littmann, C. Scheidemann, T. Hemsel, in: 2025.' conference: end_date: 2025-09-25 location: Paderborn, Germany name: International Congress on Ultrasonics (ICU) start_date: 2025-09-21 date_created: 2026-03-02T11:35:33Z date_updated: 2026-04-02T12:47:18Z ddc: - '620' department: - _id: '151' file: - access_level: closed content_type: application/pdf creator: hemsel date_created: 2026-04-02T12:46:09Z date_updated: 2026-04-02T12:46:09Z file_id: '65354' file_name: ICU_2025_Bornmann.pdf file_size: 1878995 relation: main_file success: 1 file_date_updated: 2026-04-02T12:46:09Z has_accepted_license: '1' language: - iso: eng status: public title: Innovative lead-free ultrasonic bending transducers for low to medium power applications type: conference user_id: '210' year: '2025' ... --- _id: '64802' abstract: - lang: eng text: Power ultrasonic actuators are used in various industrial, automotive and medical applications. Examples are ultrasonic welding of plastics or metal, surgery processes like cutting of tissue or bone, and the excitation of cavitation in liquids for ultrasonic cleaning. From a physical point of view, many of these processes are characterised by non-constant damping conditions for the ultrasonic actuators, since the systems need to be driven in unloaded as well as in high-loaded states. To get high power output, the piezoelectric actuators are usually driven in or near resonance at precisely defined vibration amplitudes. This is a quite complicated task especially if cost or mass optimized PZT transducers are used or if lead-free piezoelectric ceramics are applied to replace lead-containing materials. In particular the sudden change between loading states is very challenging for electronic excitation and control. The present contribution gives insight into typical problems that may arise in context with sudden load-changes during operation, e.g. uncontrolled jumps in voltage and velocity amplitudes. Measurements on ultrasonic power actuators being abruptly immersed into water at high amplitude are discussed for illustration. Observations during spontaneous load-changes are explained, and it is shown that several problems may be defused by driving the actuators in antiresonance or using a particular driving point in-between resonance and antiresonance (“falling edge control”). The different control strategies are investigated always using just one single hardware. author: - first_name: Walter full_name: Littmann, Walter last_name: Littmann - first_name: Peter full_name: Bornmann, Peter last_name: Bornmann - first_name: Tobias full_name: Hemsel, Tobias id: '210' last_name: Hemsel - first_name: Claus full_name: Scheidemann, Claus id: '38259' last_name: Scheidemann citation: ama: 'Littmann W, Bornmann P, Hemsel T, Scheidemann C. Power ultrasonic actuators with suddenly changing loads: How to control the amplitudes in resonance,  antiresonance, or in-between. In: ; 2025.' apa: 'Littmann, W., Bornmann, P., Hemsel, T., & Scheidemann, C. (2025). Power ultrasonic actuators with suddenly changing loads: How to control the amplitudes in resonance,  antiresonance, or in-between. International Conference on Ultrasonics (ICU), Paderborn, Germany.' bibtex: '@inproceedings{Littmann_Bornmann_Hemsel_Scheidemann_2025, title={Power ultrasonic actuators with suddenly changing loads: How to control the amplitudes in resonance,  antiresonance, or in-between}, author={Littmann, Walter and Bornmann, Peter and Hemsel, Tobias and Scheidemann, Claus}, year={2025} }' chicago: 'Littmann, Walter, Peter Bornmann, Tobias Hemsel, and Claus Scheidemann. “Power Ultrasonic Actuators with Suddenly Changing Loads: How to Control the Amplitudes in Resonance,  Antiresonance, or in-Between,” 2025.' ieee: 'W. Littmann, P. Bornmann, T. Hemsel, and C. Scheidemann, “Power ultrasonic actuators with suddenly changing loads: How to control the amplitudes in resonance,  antiresonance, or in-between,” presented at the International Conference on Ultrasonics (ICU), Paderborn, Germany, 2025.' mla: 'Littmann, Walter, et al. Power Ultrasonic Actuators with Suddenly Changing Loads: How to Control the Amplitudes in Resonance,  Antiresonance, or in-Between. 2025.' short: 'W. Littmann, P. Bornmann, T. Hemsel, C. Scheidemann, in: 2025.' conference: end_date: 2025-09-25 location: Paderborn, Germany name: International Conference on Ultrasonics (ICU) start_date: 2025-09-21 date_created: 2026-03-02T11:19:46Z date_updated: 2026-04-02T12:45:42Z ddc: - '620' department: - _id: '151' file: - access_level: closed content_type: application/pdf creator: hemsel date_created: 2026-04-02T12:41:08Z date_updated: 2026-04-02T12:41:08Z file_id: '65353' file_name: ICU_2025_Littmann.pdf file_size: 2522135 relation: main_file success: 1 file_date_updated: 2026-04-02T12:41:08Z has_accepted_license: '1' language: - iso: eng status: public title: 'Power ultrasonic actuators with suddenly changing loads: How to control the amplitudes in resonance, antiresonance, or in-between' type: conference user_id: '210' year: '2025' ... --- _id: '65221' author: - first_name: Gunter full_name: Kullmer, Gunter id: '291' last_name: Kullmer - first_name: Deborah full_name: Weiß, Deborah id: '45673' last_name: Weiß - first_name: Tobias full_name: Duffe, Tobias id: '41322' last_name: Duffe - first_name: Britta full_name: Schramm, Britta id: '4668' last_name: Schramm - first_name: Richard full_name: Ostwald, Richard id: '106876' last_name: Ostwald orcid: 0000-0003-2147-8444 citation: ama: Kullmer G, Weiß D, Duffe T, Schramm B, Ostwald R. BESCHREIBUNG DES R- UND DES TEMPERATUREINFLUSSES SOWIE DES EINLAUFVERHALTENS BEI EXPERIMENTELL BESTIMMTEN RISSFORTSCHRITTSKURVEN MIT DEM EXPONENTIALANSATZ. LibreCat University; 2025. doi:https://doi.org/10.48447/BR-2025-492 apa: Kullmer, G., Weiß, D., Duffe, T., Schramm, B., & Ostwald, R. (2025). BESCHREIBUNG DES R- UND DES TEMPERATUREINFLUSSES SOWIE DES EINLAUFVERHALTENS BEI EXPERIMENTELL BESTIMMTEN RISSFORTSCHRITTSKURVEN MIT DEM EXPONENTIALANSATZ. LibreCat University. https://doi.org/10.48447/BR-2025-492 bibtex: '@book{Kullmer_Weiß_Duffe_Schramm_Ostwald_2025, title={BESCHREIBUNG DES R- UND DES TEMPERATUREINFLUSSES SOWIE DES EINLAUFVERHALTENS BEI EXPERIMENTELL BESTIMMTEN RISSFORTSCHRITTSKURVEN MIT DEM EXPONENTIALANSATZ}, DOI={https://doi.org/10.48447/BR-2025-492}, publisher={LibreCat University}, author={Kullmer, Gunter and Weiß, Deborah and Duffe, Tobias and Schramm, Britta and Ostwald, Richard}, year={2025} }' chicago: Kullmer, Gunter, Deborah Weiß, Tobias Duffe, Britta Schramm, and Richard Ostwald. BESCHREIBUNG DES R- UND DES TEMPERATUREINFLUSSES SOWIE DES EINLAUFVERHALTENS BEI EXPERIMENTELL BESTIMMTEN RISSFORTSCHRITTSKURVEN MIT DEM EXPONENTIALANSATZ. LibreCat University, 2025. https://doi.org/10.48447/BR-2025-492. ieee: G. Kullmer, D. Weiß, T. Duffe, B. Schramm, and R. Ostwald, BESCHREIBUNG DES R- UND DES TEMPERATUREINFLUSSES SOWIE DES EINLAUFVERHALTENS BEI EXPERIMENTELL BESTIMMTEN RISSFORTSCHRITTSKURVEN MIT DEM EXPONENTIALANSATZ. LibreCat University, 2025. mla: Kullmer, Gunter, et al. BESCHREIBUNG DES R- UND DES TEMPERATUREINFLUSSES SOWIE DES EINLAUFVERHALTENS BEI EXPERIMENTELL BESTIMMTEN RISSFORTSCHRITTSKURVEN MIT DEM EXPONENTIALANSATZ. LibreCat University, 2025, doi:https://doi.org/10.48447/BR-2025-492. short: G. Kullmer, D. Weiß, T. Duffe, B. Schramm, R. Ostwald, BESCHREIBUNG DES R- UND DES TEMPERATUREINFLUSSES SOWIE DES EINLAUFVERHALTENS BEI EXPERIMENTELL BESTIMMTEN RISSFORTSCHRITTSKURVEN MIT DEM EXPONENTIALANSATZ, LibreCat University, 2025. date_created: 2026-03-30T11:00:23Z date_updated: 2026-04-07T04:35:27Z department: - _id: '9' - _id: '143' doi: https://doi.org/10.48447/BR-2025-492 publisher: LibreCat University status: public title: BESCHREIBUNG DES R- UND DES TEMPERATUREINFLUSSES SOWIE DES EINLAUFVERHALTENS BEI EXPERIMENTELL BESTIMMTEN RISSFORTSCHRITTSKURVEN MIT DEM EXPONENTIALANSATZ type: research_data user_id: '85414' year: '2025' ... --- _id: '59894' abstract: - lang: eng text: 'Abstract. This study presents intrinsic lubrication as a novel approach to deep drawing processes, using additively manufactured, lubricant-permeable tools to minimize lubricant consumption and improve efficiency. Two systems were evaluated: a passive system based on capillary action and gravity, and an active system using pumped delivery for precise, on-demand application. Experimental tests were conducted on micro-bores (0.2-0.5 mm) to demonstrate their suitability for lubricant transport. Smaller bores have excellent capillary action but are prone to clogging, while larger bores offer higher permeability. The passive system is resource-efficient but requires adjustments to counteract gravitational asymmetry. The active system provides consistent lubricant distribution but is more complex. These findings provide a basis for optimizing intrinsic lubrication systems.' author: - first_name: Ermir full_name: Cakici, Ermir id: '79551' last_name: Cakici - first_name: Werner full_name: Homberg, Werner id: '233' last_name: Homberg citation: ama: 'Cakici E, Homberg W. Intrinsic lubrication: A new approach in the context of the deep drawing process. In: Materials Research Proceedings. Vol 54. Materials Research Forum LLC; 2025. doi:10.21741/9781644903599-122' apa: 'Cakici, E., & Homberg, W. (2025). Intrinsic lubrication: A new approach in the context of the deep drawing process. Materials Research Proceedings, 54. https://doi.org/10.21741/9781644903599-122' bibtex: '@inproceedings{Cakici_Homberg_2025, title={Intrinsic lubrication: A new approach in the context of the deep drawing process}, volume={54}, DOI={10.21741/9781644903599-122}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Cakici, Ermir and Homberg, Werner}, year={2025} }' chicago: 'Cakici, Ermir, and Werner Homberg. “Intrinsic Lubrication: A New Approach in the Context of the Deep Drawing Process.” In Materials Research Proceedings, Vol. 54. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903599-122.' ieee: 'E. Cakici and W. Homberg, “Intrinsic lubrication: A new approach in the context of the deep drawing process,” in Materials Research Proceedings, Paestum, Italien, 2025, vol. 54, doi: 10.21741/9781644903599-122.' mla: 'Cakici, Ermir, and Werner Homberg. “Intrinsic Lubrication: A New Approach in the Context of the Deep Drawing Process.” Materials Research Proceedings, vol. 54, Materials Research Forum LLC, 2025, doi:10.21741/9781644903599-122.' short: 'E. Cakici, W. Homberg, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.' conference: end_date: 2025-05-09 location: Paestum, Italien name: The 28th International ESAFORM Conference on Material Forming - ESAFORM 2025 start_date: 2025-05-07 date_created: 2025-05-14T08:53:41Z date_updated: 2026-04-16T08:33:32Z department: - _id: '156' - _id: '321' doi: 10.21741/9781644903599-122 intvolume: ' 54' language: - iso: eng main_file_link: - url: https://mrforum.com/product/9781644903599-122/ publication: Materials Research Proceedings publication_identifier: issn: - 2474-395X publication_status: published publisher: Materials Research Forum LLC quality_controlled: '1' status: public title: 'Intrinsic lubrication: A new approach in the context of the deep drawing process' type: conference user_id: '79551' volume: 54 year: '2025' ... --- _id: '64218' author: - first_name: Stephan Matthias full_name: Kokew, Stephan Matthias id: '111362' last_name: Kokew orcid: 0009-0005-6980-2727 citation: ama: 'Kokew SM. Islamic Principles of Tolerance and Its Relevance for an Islamic Religious Pedagogy -Teaching ›Tolerance‹ in a Contemporary Islamic Education Context: Observations on Semantical Differentiations of Terms and Meanings. In: Karagedik U, Yağdı S, Kocyigit I, eds. Islamic Theological and Pedagogical Approaches to Religious Education. Interdisciplinary Perspectives on Contemporary Challenges. Vol 1. 1st ed. Neue Perspektiven in der Islamischen Theologie und Religionspädagogik . Nomos; 2025:263-278.' apa: 'Kokew, S. M. (2025). Islamic Principles of Tolerance and Its Relevance for an Islamic Religious Pedagogy -Teaching ›Tolerance‹ in a Contemporary Islamic Education Context: Observations on Semantical Differentiations of Terms and Meanings. In U. Karagedik, S. Yağdı, & I. Kocyigit (Eds.), Islamic Theological and Pedagogical Approaches to Religious Education. Interdisciplinary Perspectives on Contemporary Challenges (1st ed., Vol. 1, pp. 263–278). Nomos.' bibtex: '@inbook{Kokew_2025, place={Baden-Baden}, edition={1}, series={Neue Perspektiven in der Islamischen Theologie und Religionspädagogik }, title={Islamic Principles of Tolerance and Its Relevance for an Islamic Religious Pedagogy -Teaching ›Tolerance‹ in a Contemporary Islamic Education Context: Observations on Semantical Differentiations of Terms and Meanings}, volume={1}, booktitle={Islamic Theological and Pedagogical Approaches to Religious Education. Interdisciplinary Perspectives on Contemporary Challenges}, publisher={Nomos}, author={Kokew, Stephan Matthias}, editor={Karagedik, Ulvi and Yağdı, Senol and Kocyigit, Ibrahim}, year={2025}, pages={263–278}, collection={Neue Perspektiven in der Islamischen Theologie und Religionspädagogik } }' chicago: 'Kokew, Stephan Matthias. “Islamic Principles of Tolerance and Its Relevance for an Islamic Religious Pedagogy -Teaching ›Tolerance‹ in a Contemporary Islamic Education Context: Observations on Semantical Differentiations of Terms and Meanings.” In Islamic Theological and Pedagogical Approaches to Religious Education. Interdisciplinary Perspectives on Contemporary Challenges, edited by Ulvi Karagedik, Senol Yağdı, and Ibrahim Kocyigit, 1st ed., 1:263–78. Neue Perspektiven in Der Islamischen Theologie Und Religionspädagogik . Baden-Baden: Nomos, 2025.' ieee: 'S. M. Kokew, “Islamic Principles of Tolerance and Its Relevance for an Islamic Religious Pedagogy -Teaching ›Tolerance‹ in a Contemporary Islamic Education Context: Observations on Semantical Differentiations of Terms and Meanings,” in Islamic Theological and Pedagogical Approaches to Religious Education. Interdisciplinary Perspectives on Contemporary Challenges, 1st ed., vol. 1, U. Karagedik, S. Yağdı, and I. Kocyigit, Eds. Baden-Baden: Nomos, 2025, pp. 263–278.' mla: 'Kokew, Stephan Matthias. “Islamic Principles of Tolerance and Its Relevance for an Islamic Religious Pedagogy -Teaching ›Tolerance‹ in a Contemporary Islamic Education Context: Observations on Semantical Differentiations of Terms and Meanings.” Islamic Theological and Pedagogical Approaches to Religious Education. Interdisciplinary Perspectives on Contemporary Challenges, edited by Ulvi Karagedik et al., 1st ed., vol. 1, Nomos, 2025, pp. 263–78.' short: 'S.M. Kokew, in: U. Karagedik, S. Yağdı, I. Kocyigit (Eds.), Islamic Theological and Pedagogical Approaches to Religious Education. Interdisciplinary Perspectives on Contemporary Challenges, 1st ed., Nomos, Baden-Baden, 2025, pp. 263–278.' date_created: 2026-02-18T18:15:01Z date_updated: 2026-04-16T10:10:17Z department: - _id: '469' edition: '1' editor: - first_name: Ulvi full_name: Karagedik, Ulvi last_name: Karagedik - first_name: Senol full_name: Yağdı, Senol last_name: Yağdı - first_name: Ibrahim full_name: Kocyigit, Ibrahim last_name: Kocyigit intvolume: ' 1' keyword: - Tolerance - Islamic Tradition language: - iso: eng page: 263-278 place: Baden-Baden publication: Islamic Theological and Pedagogical Approaches to Religious Education. Interdisciplinary Perspectives on Contemporary Challenges publication_identifier: isbn: - ' 978-3-7560-1005-9' publication_status: published publisher: Nomos quality_controlled: '1' series_title: 'Neue Perspektiven in der Islamischen Theologie und Religionspädagogik ' status: public title: 'Islamic Principles of Tolerance and Its Relevance for an Islamic Religious Pedagogy -Teaching ›Tolerance‹ in a Contemporary Islamic Education Context: Observations on Semantical Differentiations of Terms and Meanings' type: book_chapter user_id: '111362' volume: 1 year: '2025' ... --- _id: '59088' abstract: - lang: eng text: "This paper deals with the implementation and results of the application of a multi-stage traffic light control system which includes a simulation-based traffic estimation and model predictive control.\r\nThe traffic light control system incorporates a fuzzy system for traffic light phase preselection, followed by a model predictive control to optimise phase combinations and switching times. Predefined phases are selected without restrictions in the order according to a multi-objective optimisation to adapt to the traffic as freely as possible. Initially, the system is tested in simulations and compared with existing methods and analysed afterwards for its effectiveness in a prototype commissioning in field tests. Results indicate high potentials for reducing emissions and waiting times, highlighting the system's value. However, further refinement is necessary for standard implementation. This comprehensive approach demonstrates advancements in traffic management technology, showcasing the potential for enhancing urban mobility and reducing environmental impact." author: - first_name: Kevin full_name: Malena, Kevin id: '36303' last_name: Malena orcid: 0000-0003-1183-4679 - first_name: Christopher full_name: Link, Christopher id: '38249' last_name: Link - first_name: Sandra full_name: Gausemeier, Sandra id: '17793' last_name: Gausemeier - first_name: Ansgar full_name: Trächtler, Ansgar id: '552' last_name: Trächtler citation: ama: 'Malena K, Link C, Gausemeier S, Trächtler A. Implementation and Results of a Multi-Stage Model Predictive Traffic Light Control System. In: 2024 IEEE 27th International Conference on Intelligent Transportation Systems (ITSC). Vol 27. IEEE; 2025. doi:10.1109/itsc58415.2024.10919569' apa: Malena, K., Link, C., Gausemeier, S., & Trächtler, A. (2025). Implementation and Results of a Multi-Stage Model Predictive Traffic Light Control System. 2024 IEEE 27th International Conference on Intelligent Transportation Systems (ITSC), 27. https://doi.org/10.1109/itsc58415.2024.10919569 bibtex: '@inproceedings{Malena_Link_Gausemeier_Trächtler_2025, title={Implementation and Results of a Multi-Stage Model Predictive Traffic Light Control System}, volume={27}, DOI={10.1109/itsc58415.2024.10919569}, booktitle={2024 IEEE 27th International Conference on Intelligent Transportation Systems (ITSC)}, publisher={IEEE}, author={Malena, Kevin and Link, Christopher and Gausemeier, Sandra and Trächtler, Ansgar}, year={2025} }' chicago: Malena, Kevin, Christopher Link, Sandra Gausemeier, and Ansgar Trächtler. “Implementation and Results of a Multi-Stage Model Predictive Traffic Light Control System.” In 2024 IEEE 27th International Conference on Intelligent Transportation Systems (ITSC), Vol. 27. IEEE, 2025. https://doi.org/10.1109/itsc58415.2024.10919569. ieee: 'K. Malena, C. Link, S. Gausemeier, and A. Trächtler, “Implementation and Results of a Multi-Stage Model Predictive Traffic Light Control System,” in 2024 IEEE 27th International Conference on Intelligent Transportation Systems (ITSC), Edmonton (Canada), 2025, vol. 27, doi: 10.1109/itsc58415.2024.10919569.' mla: Malena, Kevin, et al. “Implementation and Results of a Multi-Stage Model Predictive Traffic Light Control System.” 2024 IEEE 27th International Conference on Intelligent Transportation Systems (ITSC), vol. 27, IEEE, 2025, doi:10.1109/itsc58415.2024.10919569. short: 'K. Malena, C. Link, S. Gausemeier, A. Trächtler, in: 2024 IEEE 27th International Conference on Intelligent Transportation Systems (ITSC), IEEE, 2025.' conference: end_date: 2024-09-27 location: Edmonton (Canada) name: 27th International Conference on Intelligent Transportation Systems (ITSC) start_date: 2024-09-24 date_created: 2025-03-24T08:57:08Z date_updated: 2026-04-29T08:49:46Z department: - _id: '153' doi: 10.1109/itsc58415.2024.10919569 intvolume: ' 27' keyword: - MPC language: - iso: eng publication: 2024 IEEE 27th International Conference on Intelligent Transportation Systems (ITSC) publication_identifier: issn: - 2153-0017 publication_status: published publisher: IEEE quality_controlled: '1' related_material: link: - relation: confirmation url: https://ieeexplore.ieee.org/document/10919569 status: public title: Implementation and Results of a Multi-Stage Model Predictive Traffic Light Control System type: conference user_id: '36303' volume: 27 year: '2025' ... --- _id: '58807' abstract: - lang: eng text: "One of the most important strategies for reducing CO2 emissions in the mobility sector is lightweight construction. In particular, the car body offers several opportunities for weight reduction. Multi-material designs are increasingly being applied to select the most suitable material for the respective load and ultimately achieve synergy effects. For example, aluminium castings are used at the nodes of a spaceframe body. Subsequently, these are joined with profiles to form the bodyshell. To join different materials mechanical joining techniques, such as semi-tubular self-piercing riveting, are deployed. According to the current state of the art, cracks occur in the aluminium castings during the mechanical joining process as a result of the high degree of deformation. Although the aluminium casting alloys of the AlSi-system exhibit low ductility, these alloys reveal excellent castability. In particular, the ability to cast thin structural parts is enabled by the low liquidus point of the near eutectic aluminium casting alloys.\r\nThis study addresses the mechanical joining properties of the near eutectic aluminium casting alloy AlSi12, depending on different microstructures. These are achieved by annealing processes and modifying agents. Through an adapted heat treatment, the previously lamellar morphology can be transformed into a globular morphology, which leads to increased ductility and prevents the formation of cracks during the self-piercing riveting (SPR). The joinability is investigated using different die geometries, whereas the joint formation is analysed regarding crack initiation. To evaluate the increased ductility, microstructural and mechanical tests are performed and finally, a microstructure-joinability correlation is established." article_type: original author: - first_name: Moritz full_name: Neuser, Moritz id: '32340' last_name: Neuser - first_name: Pia Katharina full_name: Holtkamp, Pia Katharina id: '44935' last_name: Holtkamp - first_name: Kay-Peter full_name: Hoyer, Kay-Peter id: '48411' last_name: Hoyer - first_name: Fabian full_name: Kappe, Fabian id: '66459' last_name: Kappe - first_name: Safak full_name: Yildiz, Safak last_name: Yildiz - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: Mirko full_name: Schaper, Mirko id: '43720' last_name: Schaper citation: ama: 'Neuser M, Holtkamp PK, Hoyer K-P, et al. Mechanical properties and joinability of the near-eutectic aluminium casting alloy AlSi12. The Journal of Materials: Design and Applications, Part L. Published online 2025. doi:10.1177/14644207251319922' apa: 'Neuser, M., Holtkamp, P. K., Hoyer, K.-P., Kappe, F., Yildiz, S., Bobbert, M., Meschut, G., & Schaper, M. (2025). Mechanical properties and joinability of the near-eutectic aluminium casting alloy AlSi12. The Journal of Materials: Design and Applications, Part L. 5th International Conference on Materials Design and Applications 2024, Porto, Portugal. https://doi.org/10.1177/14644207251319922' bibtex: '@article{Neuser_Holtkamp_Hoyer_Kappe_Yildiz_Bobbert_Meschut_Schaper_2025, title={Mechanical properties and joinability of the near-eutectic aluminium casting alloy AlSi12}, DOI={10.1177/14644207251319922}, journal={The Journal of Materials: Design and Applications, Part L}, publisher={Sage Publications}, author={Neuser, Moritz and Holtkamp, Pia Katharina and Hoyer, Kay-Peter and Kappe, Fabian and Yildiz, Safak and Bobbert, Mathias and Meschut, Gerson and Schaper, Mirko}, year={2025} }' chicago: 'Neuser, Moritz, Pia Katharina Holtkamp, Kay-Peter Hoyer, Fabian Kappe, Safak Yildiz, Mathias Bobbert, Gerson Meschut, and Mirko Schaper. “Mechanical Properties and Joinability of the Near-Eutectic Aluminium Casting Alloy AlSi12.” The Journal of Materials: Design and Applications, Part L, 2025. https://doi.org/10.1177/14644207251319922.' ieee: 'M. Neuser et al., “Mechanical properties and joinability of the near-eutectic aluminium casting alloy AlSi12,” The Journal of Materials: Design and Applications, Part L, 2025, doi: 10.1177/14644207251319922.' mla: 'Neuser, Moritz, et al. “Mechanical Properties and Joinability of the Near-Eutectic Aluminium Casting Alloy AlSi12.” The Journal of Materials: Design and Applications, Part L, Sage Publications, 2025, doi:10.1177/14644207251319922.' short: 'M. Neuser, P.K. Holtkamp, K.-P. Hoyer, F. Kappe, S. Yildiz, M. Bobbert, G. Meschut, M. Schaper, The Journal of Materials: Design and Applications, Part L (2025).' conference: end_date: 2024-07-05 location: Porto, Portugal name: 5th International Conference on Materials Design and Applications 2024 start_date: 2024-07-04 date_created: 2025-02-24T10:25:31Z date_updated: 2026-05-12T12:13:31Z department: - _id: '43' - _id: '158' - _id: '157' - _id: '9' - _id: '321' doi: 10.1177/14644207251319922 has_accepted_license: '1' keyword: - aluminium - casting - microstructure - joinability - self-piercing riveting language: - iso: eng project: - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '136' name: 'TRR 285 – A02: TRR 285 - Subproject A02' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '146' name: 'TRR 285 – C02: TRR 285 - Subproject C02' - _id: '130' name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' publication: 'The Journal of Materials: Design and Applications, Part L' publication_status: published publisher: Sage Publications quality_controlled: '1' status: public title: Mechanical properties and joinability of the near-eutectic aluminium casting alloy AlSi12 type: journal_article user_id: '7850' year: '2025' ... --- _id: '60290' abstract: - lang: eng text: The constantly increasing demand for climate protection and resource conservation requires innovative and versatile joining processes that improve adaptability to the joining task and robustness to enable flexible manufacturing on a production line. Therefore, the versatile SPR (V-SPR) and tumbling SPR (T-SPR) were developed. Using the example of a mixed material combination HCT590X+Z (t0 = 1.0 mm) / EN AW-6014 T4 (t0 = 2.0 mm), these processes were examined and compared with regard to the binding mechanisms form closure and force closure using micrographs, non-destructive resistance measurements and destructive torsion tests. For this purpose, a new sample geometry was defined, and the methods were adapted to the SPR process variants. author: - first_name: Stephan full_name: Lüder, Stephan last_name: Lüder - first_name: Pia Katharina full_name: Holtkamp, Pia Katharina id: '44935' last_name: Holtkamp - first_name: Simon full_name: Wituschek, Simon last_name: Wituschek - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: Michael full_name: Lechner, Michael last_name: Lechner - first_name: Hans Christian full_name: Schmale, Hans Christian last_name: Schmale citation: ama: 'Lüder S, Holtkamp PK, Wituschek S, et al. Analysis of the binding mechanisms depending on versatile process variants of self-piercing riveting. In: Meschut G, Bobbert M, Duflou J, et al., eds. Materials Research Proceedings. Vol 52. Sheet Metal 2025. Materials Research Forum LLC; 2025:101-108. doi:10.21741/9781644903551-13' apa: Lüder, S., Holtkamp, P. K., Wituschek, S., Bobbert, M., Meschut, G., Lechner, M., & Schmale, H. C. (2025). Analysis of the binding mechanisms depending on versatile process variants of self-piercing riveting. In G. Meschut, M. Bobbert, J. Duflou, L. Fratini, H. Hagenah, P. A. F. Martins, M. Merklein, & F. Micari (Eds.), Materials Research Proceedings (Vol. 52, pp. 101–108). Materials Research Forum LLC. https://doi.org/10.21741/9781644903551-13 bibtex: '@inproceedings{Lüder_Holtkamp_Wituschek_Bobbert_Meschut_Lechner_Schmale_2025, place={Millersville}, series={Sheet Metal 2025}, title={Analysis of the binding mechanisms depending on versatile process variants of self-piercing riveting}, volume={52}, DOI={10.21741/9781644903551-13}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Lüder, Stephan and Holtkamp, Pia Katharina and Wituschek, Simon and Bobbert, Mathias and Meschut, Gerson and Lechner, Michael and Schmale, Hans Christian}, editor={Meschut, Gerson and Bobbert, Mathias and Duflou, Joost and Fratini, Livan and Hagenah, Hinnerk and Martins, Paulo A. F. and Merklein, Marion and Micari, Fabrizio}, year={2025}, pages={101–108}, collection={Sheet Metal 2025} }' chicago: 'Lüder, Stephan, Pia Katharina Holtkamp, Simon Wituschek, Mathias Bobbert, Gerson Meschut, Michael Lechner, and Hans Christian Schmale. “Analysis of the Binding Mechanisms Depending on Versatile Process Variants of Self-Piercing Riveting.” In Materials Research Proceedings, edited by Gerson Meschut, Mathias Bobbert, Joost Duflou, Livan Fratini, Hinnerk Hagenah, Paulo A. F. Martins, Marion Merklein, and Fabrizio Micari, 52:101–8. Sheet Metal 2025. Millersville: Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903551-13.' ieee: 'S. Lüder et al., “Analysis of the binding mechanisms depending on versatile process variants of self-piercing riveting,” in Materials Research Proceedings, Paderborn, 2025, vol. 52, pp. 101–108, doi: 10.21741/9781644903551-13.' mla: Lüder, Stephan, et al. “Analysis of the Binding Mechanisms Depending on Versatile Process Variants of Self-Piercing Riveting.” Materials Research Proceedings, edited by Gerson Meschut et al., vol. 52, Materials Research Forum LLC, 2025, pp. 101–08, doi:10.21741/9781644903551-13. short: 'S. Lüder, P.K. Holtkamp, S. Wituschek, M. Bobbert, G. Meschut, M. Lechner, H.C. Schmale, in: G. Meschut, M. Bobbert, J. Duflou, L. Fratini, H. Hagenah, P.A.F. Martins, M. Merklein, F. Micari (Eds.), Materials Research Proceedings, Materials Research Forum LLC, Millersville, 2025, pp. 101–108.' conference: end_date: 2025-04-03 location: Paderborn name: 21st International Conference on Sheet Metal start_date: 2025-04-01 date_created: 2025-06-20T10:13:22Z date_updated: 2026-05-12T12:12:36Z department: - _id: '630' - _id: '43' - _id: '157' doi: 10.21741/9781644903551-13 editor: - first_name: Gerson full_name: Meschut, Gerson last_name: Meschut - first_name: Mathias full_name: Bobbert, Mathias last_name: Bobbert - first_name: Joost full_name: Duflou, Joost last_name: Duflou - first_name: Livan full_name: Fratini, Livan last_name: Fratini - first_name: Hinnerk full_name: Hagenah, Hinnerk last_name: Hagenah - first_name: Paulo A. F. full_name: Martins, Paulo A. F. last_name: Martins - first_name: Marion full_name: Merklein, Marion last_name: Merklein - first_name: Fabrizio full_name: Micari, Fabrizio last_name: Micari extern: '1' intvolume: ' 52' keyword: - Joining - Self-Piercing Riveting - Sheet Metal language: - iso: eng page: 101 - 108 place: Millersville project: - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '138' name: 'TRR 285 – A04: TRR 285 - Subproject A04' - _id: '133' name: 'TRR 285 - C: TRR 285 - Project Area C' - _id: '146' name: 'TRR 285 – C02: TRR 285 - Subproject C02' - _id: '130' name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' publication: Materials Research Proceedings publication_identifier: issn: - 2474-395X publication_status: published publisher: Materials Research Forum LLC quality_controlled: '1' series_title: Sheet Metal 2025 status: public title: Analysis of the binding mechanisms depending on versatile process variants of self-piercing riveting type: conference user_id: '7850' volume: 52 year: '2025' ... --- _id: '63662' abstract: - lang: eng text: The accurate prediction of crack initiation and propagation is essential for assessing the structural integrity of mechanically joined components and other complex assemblies. To overcome the limitations of existing finite element tools, a modular Python framework has been developed to automate three-dimensional crack growth simulations. The program combines geometric reconstruction, adaptive remeshing, and the numerical evaluation of fracture mechanics parameters within a single, fully automated workflow. The framework builds on open-source components and remains solver-independent, enabling straightforward integration with commercial or research finite element codes. A dedicated sequence of modules performs all required steps, from mesh separation and crack insertion to local submodeling, stress and displacement mapping, and iterative crack-front update, without manual interaction. The methodology was verified using a mini-compact tension (Mini-CT) specimen as a benchmark case. The numerical results demonstrate the accurate reproduction of stress intensity factors and energy release rates while achieving high computational efficiency through localized refinement. The developed approach provides a robust basis for crack growth simulations of geometrically complex or residual stress-affected structures. Its high degree of automation and flexibility makes it particularly suited for analyzing cracks in clinched and riveted joints, supporting the predictive design and durability assessment of joined lightweight structures. article_number: '384' author: - first_name: Sven full_name: Krome, Sven id: '57245' last_name: Krome - first_name: Tobias full_name: Duffe, Tobias id: '41322' last_name: Duffe - first_name: Gunter full_name: Kullmer, Gunter id: '291' last_name: Kullmer - first_name: Britta full_name: Schramm, Britta id: '4668' last_name: Schramm - first_name: Richard full_name: Ostwald, Richard id: '106876' last_name: Ostwald orcid: 0000-0003-2147-8444 citation: ama: Krome S, Duffe T, Kullmer G, Schramm B, Ostwald R. Validation and Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D. Applied Sciences. 2025;16(1). doi:10.3390/app16010384 apa: Krome, S., Duffe, T., Kullmer, G., Schramm, B., & Ostwald, R. (2025). Validation and Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D. Applied Sciences, 16(1), Article 384. https://doi.org/10.3390/app16010384 bibtex: '@article{Krome_Duffe_Kullmer_Schramm_Ostwald_2025, title={Validation and Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D}, volume={16}, DOI={10.3390/app16010384}, number={1384}, journal={Applied Sciences}, publisher={MDPI AG}, author={Krome, Sven and Duffe, Tobias and Kullmer, Gunter and Schramm, Britta and Ostwald, Richard}, year={2025} }' chicago: Krome, Sven, Tobias Duffe, Gunter Kullmer, Britta Schramm, and Richard Ostwald. “Validation and Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D.” Applied Sciences 16, no. 1 (2025). https://doi.org/10.3390/app16010384. ieee: 'S. Krome, T. Duffe, G. Kullmer, B. Schramm, and R. Ostwald, “Validation and Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D,” Applied Sciences, vol. 16, no. 1, Art. no. 384, 2025, doi: 10.3390/app16010384.' mla: Krome, Sven, et al. “Validation and Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D.” Applied Sciences, vol. 16, no. 1, 384, MDPI AG, 2025, doi:10.3390/app16010384. short: S. Krome, T. Duffe, G. Kullmer, B. Schramm, R. Ostwald, Applied Sciences 16 (2025). date_created: 2026-01-20T08:47:40Z date_updated: 2026-05-12T12:46:22Z department: - _id: '9' - _id: '952' - _id: '321' doi: 10.3390/app16010384 intvolume: ' 16' issue: '1' language: - iso: eng project: - _id: '132' name: TRR 285 - Project Area B - _id: '143' name: TRR 285 - Subproject B04 - _id: '130' name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' publication: Applied Sciences publication_identifier: issn: - 2076-3417 publication_status: published publisher: MDPI AG quality_controlled: '1' status: public title: Validation and Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D type: journal_article user_id: '7850' volume: 16 year: '2025' ... --- _id: '59878' abstract: - lang: eng text: Abstract. In the development of advanced lightweight automotive solutions, self-piercing riveting (SPR) offers the possibility of joining multi-material structures to fulfil a wide variety of requirements. With regard to the entire process chain, production-related pre-deformations of the parts to be joined can influence the geometric shape and load capacity of SPR joints. Various studies have investigated the influence of pre-stretched sheet materials, in the sense of pre-drawing processes, on the formation of SPR joints. The impact of pre-stretching sheet metals on the formation of their geometrical characteristics and the shear-tensile strength of SPR processes was observed [1]. Pre-rolled semi-finished products are also joined together in mixed material automotive structures, e.g. tailor rolled blanks. This work aims to investigate the influence of pre-rolled joining parts on the geometric formation and load-carrying capacity of SPR joints. For this purpose, sheets of metal are cold-formed using a rolling process to induce a defined strain-hardening state in the material and then joined in various combinations. As the degree of deformation increases, the rolling of samples can lead to minimal accumulation of damage in the sheet materials, which can influence the joint behaviour. The rolling process, as well as the subsequent joining process, are also investigated by FEM. The influence of pre-rolled semi-finished products on the strength of the SPR joints is investigated. author: - first_name: Malte Christian full_name: Schlichter, Malte Christian id: '61977' last_name: Schlichter - first_name: Özcan full_name: Harabati, Özcan last_name: Harabati - first_name: Jean-Patrick full_name: Ludwig, Jean-Patrick id: '76631' last_name: Ludwig - first_name: Max full_name: Böhnke, Max id: '45779' last_name: Böhnke - first_name: Christian Roman full_name: Bielak, Christian Roman id: '34782' last_name: Bielak - first_name: Mathias full_name: Bobbert, Mathias id: '7850' last_name: Bobbert - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: 'Schlichter MC, Harabati Ö, Ludwig J-P, et al. Experimental and numerical investigation of the influence of rolling-induced sheet metal deformation on SPR joints. In: Materials Research Proceedings. Vol 54. Materials Research Forum LLC; 2025. doi:10.21741/9781644903599-148' apa: Schlichter, M. C., Harabati, Ö., Ludwig, J.-P., Böhnke, M., Bielak, C. R., Bobbert, M., & Meschut, G. (2025). Experimental and numerical investigation of the influence of rolling-induced sheet metal deformation on SPR joints. Materials Research Proceedings, 54. https://doi.org/10.21741/9781644903599-148 bibtex: '@inproceedings{Schlichter_Harabati_Ludwig_Böhnke_Bielak_Bobbert_Meschut_2025, place={Paestum}, title={Experimental and numerical investigation of the influence of rolling-induced sheet metal deformation on SPR joints}, volume={54}, DOI={10.21741/9781644903599-148}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Schlichter, Malte Christian and Harabati, Özcan and Ludwig, Jean-Patrick and Böhnke, Max and Bielak, Christian Roman and Bobbert, Mathias and Meschut, Gerson}, year={2025} }' chicago: 'Schlichter, Malte Christian, Özcan Harabati, Jean-Patrick Ludwig, Max Böhnke, Christian Roman Bielak, Mathias Bobbert, and Gerson Meschut. “Experimental and Numerical Investigation of the Influence of Rolling-Induced Sheet Metal Deformation on SPR Joints.” In Materials Research Proceedings, Vol. 54. Paestum: Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903599-148.' ieee: 'M. C. Schlichter et al., “Experimental and numerical investigation of the influence of rolling-induced sheet metal deformation on SPR joints,” in Materials Research Proceedings, 2025, vol. 54, doi: 10.21741/9781644903599-148.' mla: Schlichter, Malte Christian, et al. “Experimental and Numerical Investigation of the Influence of Rolling-Induced Sheet Metal Deformation on SPR Joints.” Materials Research Proceedings, vol. 54, Materials Research Forum LLC, 2025, doi:10.21741/9781644903599-148. short: 'M.C. Schlichter, Ö. Harabati, J.-P. Ludwig, M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, Paestum, 2025.' date_created: 2025-05-13T06:54:20Z date_updated: 2026-05-13T13:50:44Z department: - _id: '157' doi: 10.21741/9781644903599-148 intvolume: ' 54' language: - iso: eng place: Paestum project: - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '135' name: 'TRR 285 – A01: TRR 285 - Subproject A01' - _id: '130' name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' publication: Materials Research Proceedings publication_identifier: issn: - 2474-395X publication_status: published publisher: Materials Research Forum LLC quality_controlled: '1' status: public title: Experimental and numerical investigation of the influence of rolling-induced sheet metal deformation on SPR joints type: conference user_id: '61977' volume: 54 year: '2025' ... --- _id: '63440' author: - first_name: Elmar full_name: Moritzer, Elmar id: '20531' last_name: Moritzer - first_name: Philipp full_name: Brandes, Philipp id: '70091' last_name: Brandes orcid: 0009-0005-9707-0885 - first_name: Max Siegfried full_name: Westphal, Max Siegfried last_name: Westphal - first_name: Leander full_name: Claes, Leander id: '11829' last_name: Claes orcid: 0000-0002-4393-268X - first_name: Mareen full_name: Wippermann, Mareen id: '74624' last_name: Wippermann - first_name: Julia full_name: Düchting, Julia last_name: Düchting - first_name: Bernd full_name: Henning, Bernd id: '213' last_name: Henning citation: ama: Moritzer E, Brandes P, Westphal MS, et al. Zerstörungsfreie Ultraschall-Prüfung von Organoblechen. WAK Jahresmagazin. 2025;2025:26–29. apa: Moritzer, E., Brandes, P., Westphal, M. S., Claes, L., Wippermann, M., Düchting, J., & Henning, B. (2025). Zerstörungsfreie Ultraschall-Prüfung von Organoblechen. WAK Jahresmagazin, 2025, 26–29. bibtex: '@article{Moritzer_Brandes_Westphal_Claes_Wippermann_Düchting_Henning_2025, title={Zerstörungsfreie Ultraschall-Prüfung von Organoblechen}, volume={2025}, journal={WAK Jahresmagazin}, author={Moritzer, Elmar and Brandes, Philipp and Westphal, Max Siegfried and Claes, Leander and Wippermann, Mareen and Düchting, Julia and Henning, Bernd}, year={2025}, pages={26–29} }' chicago: 'Moritzer, Elmar, Philipp Brandes, Max Siegfried Westphal, Leander Claes, Mareen Wippermann, Julia Düchting, and Bernd Henning. “Zerstörungsfreie Ultraschall-Prüfung von Organoblechen.” WAK Jahresmagazin 2025 (2025): 26–29.' ieee: E. Moritzer et al., “Zerstörungsfreie Ultraschall-Prüfung von Organoblechen,” WAK Jahresmagazin, vol. 2025, pp. 26–29, 2025. mla: Moritzer, Elmar, et al. “Zerstörungsfreie Ultraschall-Prüfung von Organoblechen.” WAK Jahresmagazin, vol. 2025, 2025, pp. 26–29. short: E. Moritzer, P. Brandes, M.S. Westphal, L. Claes, M. Wippermann, J. Düchting, B. Henning, WAK Jahresmagazin 2025 (2025) 26–29. date_created: 2026-01-05T08:42:55Z date_updated: 2026-05-18T13:20:58Z department: - _id: '9' - _id: '321' - _id: '367' - _id: '49' intvolume: ' 2025' keyword: - Faser-Kunststoff-Verbunde (FKV) - Faserverstärkte Kunststoffe (FVK) - Organobleche - Ultraschall language: - iso: ger page: 26–29 project: - _id: '157' grant_number: '495847374' name: 'FaMOUS: Ein ultraschallbasiertes Messverfahren unter Berücksichtigung viskoelastischer Eigenschaften zur Charakterisierung der Faser-Matrix-Haftung bei Organoblechen sowie deren realitätsnahe Modellierung' publication: WAK Jahresmagazin status: public title: Zerstörungsfreie Ultraschall-Prüfung von Organoblechen type: journal_article user_id: '11829' volume: 2025 year: '2025' ... --- _id: '65706' abstract: - lang: eng text: Abstract. Saving emissions and a circular economy are key aspects of sustainable production and compliance global climate change targets. Friction-induced solid-state recycling of aluminum scrap to production endless semi-finished products. Scrap is fed into a continuously rotating wheel. This requires less energy compared to heat-based recycling processes. Different sizes, shapes and surfaces of chips can be used as starting material in the process. The influence of this has been shown in past publications. A native oxide layer is a fixed component of aluminum surface. This layer is broken up during the forming process, allowing the aluminum to bond. In addition to the geometry, the surface finishes and the thickness of the oxide layer are therefore also important input variables in friction-induced solid-state recycling. The oxide layers on the chips were determined for the investigation. In addition, different layer thicknesses were produced to survey their influence. The resulting semi-finished products were evaluated on the basis of their tensile strength and microstructure. The main result of the investigations is the fact that semi-finished products made from chips with thicker oxide layers tend to be more brittle. In addition, thick oxide layers cause microstructural and surface defects. author: - first_name: Steffen full_name: Gabsa, Steffen id: '106786' last_name: Gabsa - first_name: Werner full_name: Homberg, Werner id: '233' last_name: Homberg - first_name: Timothy full_name: Goller, Timothy last_name: Goller - first_name: Ansgar Bernhard full_name: Nordieker, Ansgar Bernhard id: '88725' last_name: Nordieker - first_name: Guido full_name: Grundmeier, Guido id: '194' last_name: Grundmeier citation: ama: 'Gabsa S, Homberg W, Goller T, Nordieker AB, Grundmeier G. Influence of different oxide thicknesses on the friction induced and continuous solid-state recycling of aluminum scrap. In: Materials Research Proceedings. Vol 54. Materials Research Forum LLC; 2025. doi:10.21741/9781644903599-272' apa: Gabsa, S., Homberg, W., Goller, T., Nordieker, A. B., & Grundmeier, G. (2025). Influence of different oxide thicknesses on the friction induced and continuous solid-state recycling of aluminum scrap. Materials Research Proceedings, 54. https://doi.org/10.21741/9781644903599-272 bibtex: '@inproceedings{Gabsa_Homberg_Goller_Nordieker_Grundmeier_2025, title={Influence of different oxide thicknesses on the friction induced and continuous solid-state recycling of aluminum scrap}, volume={54}, DOI={10.21741/9781644903599-272}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Gabsa, Steffen and Homberg, Werner and Goller, Timothy and Nordieker, Ansgar Bernhard and Grundmeier, Guido}, year={2025} }' chicago: Gabsa, Steffen, Werner Homberg, Timothy Goller, Ansgar Bernhard Nordieker, and Guido Grundmeier. “Influence of Different Oxide Thicknesses on the Friction Induced and Continuous Solid-State Recycling of Aluminum Scrap.” In Materials Research Proceedings, Vol. 54. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903599-272. ieee: 'S. Gabsa, W. Homberg, T. Goller, A. B. Nordieker, and G. Grundmeier, “Influence of different oxide thicknesses on the friction induced and continuous solid-state recycling of aluminum scrap,” in Materials Research Proceedings, 2025, vol. 54, doi: 10.21741/9781644903599-272.' mla: Gabsa, Steffen, et al. “Influence of Different Oxide Thicknesses on the Friction Induced and Continuous Solid-State Recycling of Aluminum Scrap.” Materials Research Proceedings, vol. 54, Materials Research Forum LLC, 2025, doi:10.21741/9781644903599-272. short: 'S. Gabsa, W. Homberg, T. Goller, A.B. Nordieker, G. Grundmeier, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.' date_created: 2026-05-27T17:53:28Z date_updated: 2026-05-27T17:57:23Z department: - _id: '9' - _id: '156' - _id: '321' doi: 10.21741/9781644903599-272 intvolume: ' 54' language: - iso: eng publication: Materials Research Proceedings publication_identifier: issn: - 2474-395X publication_status: published publisher: Materials Research Forum LLC status: public title: Influence of different oxide thicknesses on the friction induced and continuous solid-state recycling of aluminum scrap type: conference user_id: '106786' volume: 54 year: '2025' ... --- _id: '59916' citation: ama: Garske V, ed. Die Bergpredigt (Mt 5,1-7,29). Interpretationen - Unterrichtsmodell. Westermann / Schöningh; 2025. apa: Garske, V. (Ed.). (2025). Die Bergpredigt (Mt 5,1-7,29). Interpretationen - Unterrichtsmodell. Westermann / Schöningh. bibtex: '@book{Garske_2025, place={Braunschweig}, title={Die Bergpredigt (Mt 5,1-7,29). Interpretationen - Unterrichtsmodell}, publisher={Westermann / Schöningh}, year={2025} }' chicago: 'Garske, Volker, ed. Die Bergpredigt (Mt 5,1-7,29). Interpretationen - Unterrichtsmodell. Braunschweig: Westermann / Schöningh, 2025.' ieee: 'V. Garske, Ed., Die Bergpredigt (Mt 5,1-7,29). Interpretationen - Unterrichtsmodell. Braunschweig: Westermann / Schöningh, 2025.' mla: Garske, Volker, editor. Die Bergpredigt (Mt 5,1-7,29). Interpretationen - Unterrichtsmodell. Westermann / Schöningh, 2025. short: V. Garske, ed., Die Bergpredigt (Mt 5,1-7,29). Interpretationen - Unterrichtsmodell, Westermann / Schöningh, Braunschweig, 2025. date_created: 2025-05-16T08:03:06Z date_updated: 2026-06-26T11:41:12Z department: - _id: '36' editor: - first_name: Volker full_name: Garske, Volker id: '162' last_name: Garske keyword: - Reich Gottes - soziale Gerechtigkeit - psychische Stabilität language: - iso: eng page: '106' place: Braunschweig publication_identifier: isbn: - 978-3-14-053634-9 publisher: Westermann / Schöningh status: public title: Die Bergpredigt (Mt 5,1-7,29). Interpretationen - Unterrichtsmodell type: book_editor user_id: '162' year: '2025' ... --- _id: '64165' abstract: - lang: eng text: '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.' citation: ama: Langer A, Mahs C, von Miquel B, Pilgrim I, Riegraf B, Sabisch K, eds. #Me Too in Science. Springer VS; 2025. apa: Langer, A., Mahs, C., von Miquel, B., Pilgrim, I., Riegraf, B., & Sabisch, K. (Eds.). (2025). #Me Too in Science. Springer VS. bibtex: '@book{Langer_Mahs_von Miquel_Pilgrim_Riegraf_Sabisch_2025, place={Wiesbaden}, title={#Me Too in Science}, publisher={Springer VS}, year={2025} }' chicago: 'Langer, Antje, Claudia Mahs, Beate von Miquel, Irmgard Pilgrim, Birgit Riegraf, and Katja Sabisch, eds. #Me Too in Science. Wiesbaden: Springer VS, 2025.' ieee: 'A. Langer, C. Mahs, B. von Miquel, I. Pilgrim, B. Riegraf, and K. Sabisch, Eds., #Me Too in Science. Wiesbaden: Springer VS, 2025.' mla: Langer, Antje, et al., editors. #Me Too in Science. Springer VS, 2025. short: 'A. Langer, C. Mahs, B. von Miquel, I. Pilgrim, B. Riegraf, K. Sabisch, eds., #Me Too in Science, Springer VS, Wiesbaden, 2025.' date_created: 2026-02-16T10:35:12Z date_updated: 2026-07-22T07:17:02Z editor: - first_name: Antje full_name: Langer, Antje id: '54044' last_name: Langer - first_name: Claudia full_name: Mahs, Claudia id: '336' last_name: Mahs - first_name: Beate full_name: von Miquel, Beate last_name: von Miquel - first_name: Irmgard full_name: Pilgrim, Irmgard last_name: Pilgrim - first_name: Birgit full_name: Riegraf, Birgit last_name: Riegraf - first_name: Katja full_name: Sabisch, Katja last_name: Sabisch language: - iso: ger page: '258' place: Wiesbaden publication_identifier: eisbn: - '9783658455156' isbn: - 978-3-658-45514-9 publication_status: published publisher: Springer VS status: public title: '#Me Too in Science' type: book_editor user_id: '54044' year: '2025' ... --- _id: '63608' author: - first_name: Carina full_name: Caruso, Carina id: '23123' last_name: Caruso citation: ama: 'Caruso C. 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. Religionspädagogische Beiträge. 2025;48(2):Rez. 12, 1-2. doi:https://doi.org/10.20377/rpb-1982' apa: 'Caruso, C. (2025). 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. In Religionspädagogische Beiträge (Vol. 48, Issue 2, p. Rez. 12, 1-2). https://doi.org/10.20377/rpb-1982' bibtex: '@article{Caruso_2025, 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.}, volume={48}, DOI={https://doi.org/10.20377/rpb-1982}, number={2}, journal={Religionspädagogische Beiträge}, author={Caruso, Carina}, year={2025}, pages={Rez. 12, 1-2} }' chicago: 'Caruso, Carina. “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.” Religionspädagogische Beiträge, 2025. https://doi.org/10.20377/rpb-1982.' ieee: 'C. Caruso, “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.,” Religionspädagogische Beiträge, vol. 48, no. 2. p. Rez. 12, 1-2, 2025, doi: https://doi.org/10.20377/rpb-1982.' mla: 'Caruso, Carina. “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.” Religionspädagogische Beiträge, vol. 48, no. 2, 2025, p. Rez. 12, 1-2, doi:https://doi.org/10.20377/rpb-1982.' short: C. Caruso, Religionspädagogische Beiträge 48 (2025) Rez. 12, 1-2. date_created: 2026-01-14T09:20:22Z date_updated: 2026-07-25T11:43:31Z ddc: - '370' department: - _id: '4' doi: https://doi.org/10.20377/rpb-1982 file: - access_level: closed content_type: application/pdf creator: lasses04 date_created: 2026-01-14T09:18:16Z date_updated: 2026-01-14T09:18:16Z file_id: '63609' file_name: Caruso, C., Rez., Yagdi, S., Der religionspädagogische Habitus islamischer Religionslehrer_innen.pdf file_size: 172891 relation: main_file success: 1 file_date_updated: 2026-01-14T09:18:16Z has_accepted_license: '1' intvolume: ' 48' issue: '2' language: - iso: ger page: Rez. 12, 1-2 publication: Religionspädagogische Beiträge publication_status: published status: public 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.' type: review user_id: '101413' volume: 48 year: '2025' ... --- _id: '66291' abstract: - lang: eng text: "Abstract\r\n In 1993 Keski-Vakkuri and Wen introduced a model for the fractional quantum Hall effect based on multilayer two-dimensional electron systems satisfying quasi-periodic boundary conditions. Such a model is essentially specified by a choice of a complex torus E and a symmetric positively definite matrix K of size g with non-negative integral coefficients, satisfying some further constraints. The space of the corresponding wave functions turns out to be \r\n \r\n $$\\delta $$\r\n \r\n \ δ\r\n \r\n \r\n \ -dimensional, where \r\n \ \r\n $$\\delta $$\r\n \r\n \ δ\r\n \r\n \r\n \ is the determinant of K. We construct a hermitian holomorphic bundle of rank \r\n \ \r\n $$\\delta $$\r\n \r\n \ δ\r\n \r\n \r\n \ on the abelian variety A (which is the g-fold product of the torus E with itself), whose fibres can be identified with the space of wave function of Keski-Vakkuri and Wen. A rigorous construction of this “magnetic bundle” involves the technique of Fourier–Mukai transforms on abelian varieties. The constructed bundle turns out to be simple and semi-homogeneous and it can be equipped with two different (and natural) hermitian metrics: the one coming from the center-of-mass dynamics and the one coming from the Hilbert space of the underlying many-body system. We prove that the canonical Bott–Chern connection of the first hermitian metric is always projectively flat and give sufficient conditions for this property for the second hermitian metric." article_number: '97' author: - first_name: Igor full_name: Burban, Igor id: '72064' last_name: Burban - first_name: Semyon full_name: Klevtsov, Semyon last_name: Klevtsov citation: ama: Burban I, Klevtsov S. Algebraic Geometry of the Multilayer Model of the Fractional Quantum Hall Effect on a Torus. Communications in Mathematical Physics. 2025;406(5). doi:10.1007/s00220-025-05267-9 apa: Burban, I., & Klevtsov, S. (2025). Algebraic Geometry of the Multilayer Model of the Fractional Quantum Hall Effect on a Torus. Communications in Mathematical Physics, 406(5), Article 97. https://doi.org/10.1007/s00220-025-05267-9 bibtex: '@article{Burban_Klevtsov_2025, title={Algebraic Geometry of the Multilayer Model of the Fractional Quantum Hall Effect on a Torus}, volume={406}, DOI={10.1007/s00220-025-05267-9}, number={597}, journal={Communications in Mathematical Physics}, publisher={Springer Science and Business Media LLC}, author={Burban, Igor and Klevtsov, Semyon}, year={2025} }' chicago: Burban, Igor, and Semyon Klevtsov. “Algebraic Geometry of the Multilayer Model of the Fractional Quantum Hall Effect on a Torus.” Communications in Mathematical Physics 406, no. 5 (2025). https://doi.org/10.1007/s00220-025-05267-9. ieee: 'I. Burban and S. Klevtsov, “Algebraic Geometry of the Multilayer Model of the Fractional Quantum Hall Effect on a Torus,” Communications in Mathematical Physics, vol. 406, no. 5, Art. no. 97, 2025, doi: 10.1007/s00220-025-05267-9.' mla: Burban, Igor, and Semyon Klevtsov. “Algebraic Geometry of the Multilayer Model of the Fractional Quantum Hall Effect on a Torus.” Communications in Mathematical Physics, vol. 406, no. 5, 97, Springer Science and Business Media LLC, 2025, doi:10.1007/s00220-025-05267-9. short: I. Burban, S. Klevtsov, Communications in Mathematical Physics 406 (2025). date_created: 2026-07-07T06:18:00Z date_updated: 2026-07-07T06:18:58Z doi: 10.1007/s00220-025-05267-9 intvolume: ' 406' issue: '5' language: - iso: eng publication: Communications in Mathematical Physics publication_identifier: issn: - 0010-3616 - 1432-0916 publication_status: published publisher: Springer Science and Business Media LLC status: public title: Algebraic Geometry of the Multilayer Model of the Fractional Quantum Hall Effect on a Torus type: journal_article user_id: '72064' volume: 406 year: '2025' ... --- _id: '66427' author: - first_name: Felix full_name: Beule, Felix id: '66192' last_name: Beule citation: ama: Beule F. Methodenentwicklung Zur Prognose Der Richtungsabhängigen Eigenschaftsänderungen von Klebverbindungen Aufgrund von Relativverschiebungen Während Der Aushärtung. Vol 175. Shaker Verlag; 2025. apa: Beule, F. (2025). Methodenentwicklung zur Prognose der richtungsabhängigen Eigenschaftsänderungen von Klebverbindungen aufgrund von Relativverschiebungen während der Aushärtung (Vol. 175). Shaker Verlag. bibtex: '@book{Beule_2025, place={Düren}, series={Berichte aus dem Laboratorium für Werkstoff- und Fügetechnik}, title={Methodenentwicklung zur Prognose der richtungsabhängigen Eigenschaftsänderungen von Klebverbindungen aufgrund von Relativverschiebungen während der Aushärtung}, volume={175}, publisher={Shaker Verlag}, author={Beule, Felix}, year={2025}, collection={Berichte aus dem Laboratorium für Werkstoff- und Fügetechnik} }' chicago: 'Beule, Felix. Methodenentwicklung Zur Prognose Der Richtungsabhängigen Eigenschaftsänderungen von Klebverbindungen Aufgrund von Relativverschiebungen Während Der Aushärtung. Vol. 175. Berichte Aus Dem Laboratorium Für Werkstoff- Und Fügetechnik. Düren: Shaker Verlag, 2025.' ieee: 'F. Beule, Methodenentwicklung zur Prognose der richtungsabhängigen Eigenschaftsänderungen von Klebverbindungen aufgrund von Relativverschiebungen während der Aushärtung, vol. 175. Düren: Shaker Verlag, 2025.' mla: Beule, Felix. Methodenentwicklung Zur Prognose Der Richtungsabhängigen Eigenschaftsänderungen von Klebverbindungen Aufgrund von Relativverschiebungen Während Der Aushärtung. Shaker Verlag, 2025. short: F. Beule, Methodenentwicklung Zur Prognose Der Richtungsabhängigen Eigenschaftsänderungen von Klebverbindungen Aufgrund von Relativverschiebungen Während Der Aushärtung, Shaker Verlag, Düren, 2025. date_created: 2026-07-10T06:54:43Z date_updated: 2026-07-10T06:55:06Z department: - _id: '157' intvolume: ' 175' language: - iso: eng place: Düren publication_identifier: isbn: - '9783819103308' publisher: Shaker Verlag series_title: Berichte aus dem Laboratorium für Werkstoff- und Fügetechnik status: public title: Methodenentwicklung zur Prognose der richtungsabhängigen Eigenschaftsänderungen von Klebverbindungen aufgrund von Relativverschiebungen während der Aushärtung type: book user_id: '66192' volume: 175 year: '2025' ... --- _id: '50530' abstract: - lang: ger text: "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. \r\nIm 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." - lang: eng text: "The extrusion process is the dominant processing method for thermoplastics in terms of quantity. For this reason, there are strong efforts in this area towards greater economic efficiency, which can be achieved, for example, through higher mass throughput with the same machine size, or, with regard to a circular economy, towards material-preserving processing. Both endeavours require special screw concepts. These include wave screws, which should demonstrate advantageous process behaviour in both areas. However, the design of wave screws requires a better understanding of the geometry-dependent process behaviour in extrusion. \r\nTwo topics are addressed in the dissertation. The first topic is the derivation of a method to characterise the degradation behaviour of thermoplastics and the use of the characterisation as a predictive model. The second topic deals with the design of wave screws based on numerical simulations including validation using seven energy transfer screws in comparison to three conventional screws. Among other things, the material degradation, the thermal and the material homogeneity are considered in order to create a comprehensive picture of the process behaviour of the screws. The presented investigations ultimately serve to confirm the advantageous process behaviour of wave screws." author: - first_name: Christoph Wilhelm Theodor full_name: Schall, Christoph Wilhelm Theodor id: '44224' last_name: Schall citation: ama: Schall CWT. Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken. Vol Band 2/2024. Shaker Verlag; 2024. apa: 'Schall, C. W. T. (2024). Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken: Vol. Band 2/2024. Shaker Verlag.' bibtex: '@book{Schall_2024, place={Düren}, series={Schriftenreihe Kunststofftechnik Paderborn}, title={Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken}, volume={Band 2/2024}, publisher={Shaker Verlag}, author={Schall, Christoph Wilhelm Theodor}, year={2024}, collection={Schriftenreihe Kunststofftechnik Paderborn} }' chicago: 'Schall, Christoph Wilhelm Theodor. Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken. Vol. Band 2/2024. Schriftenreihe Kunststofftechnik Paderborn. Düren: Shaker Verlag, 2024.' ieee: 'C. W. T. Schall, Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken, vol. Band 2/2024. Düren: Shaker Verlag, 2024.' mla: Schall, Christoph Wilhelm Theodor. Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken. Shaker Verlag, 2024. short: C.W.T. Schall, Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken, Shaker Verlag, Düren, 2024. date_created: 2024-01-16T09:48:27Z date_updated: 2024-01-16T09:49:07Z department: - _id: '148' - _id: '321' - _id: '9' language: - iso: ger page: '224' place: Düren publication_identifier: isbn: - 978-3-8440-9334-6 publication_status: published publisher: Shaker Verlag series_title: Schriftenreihe Kunststofftechnik Paderborn status: public supervisor: - first_name: Volker full_name: Schöppner, Volker id: '20530' last_name: Schöppner title: Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken type: dissertation user_id: '44224' volume: Band 2/2024 year: '2024' ...