--- _id: '55091' citation: ama: Hagengruber RE, Muller J, Grewe F, GENDER Journal, eds. Brisante Wahrheiten – Eine Andere Geschichte Der Philosophie . Vol 25. Barbara Budrich Verlag; 2025. apa: 'Brisante Wahrheiten – eine andere Geschichte der Philosophie . (2025). In R. E. Hagengruber, J. Muller, F. Grewe, & GENDER Journal (Eds.), GENDER: Zeitschrift, Geschlecht, Kultur und Gesellschaft - Frauen in der Geschichte der Philosophie (Vol. 25, Issue 2). Barbara Budrich Verlag.' bibtex: '@book{Hagengruber_Muller_Grewe_GENDER Journal_2025, title={Brisante Wahrheiten – eine andere Geschichte der Philosophie }, volume={25}, number={2}, journal={GENDER: Zeitschrift, Geschlecht, Kultur und Gesellschaft - Frauen in der Geschichte der Philosophie}, publisher={Barbara Budrich Verlag}, year={2025} }' chicago: 'Hagengruber, Ruth Edith, Jil Muller, Felix Grewe, and GENDER Journal, eds. Brisante Wahrheiten – Eine Andere Geschichte Der Philosophie . GENDER: Zeitschrift, Geschlecht, Kultur Und Gesellschaft - Frauen in Der Geschichte Der Philosophie. Vol. 25. Barbara Budrich Verlag, 2025.' ieee: R. E. Hagengruber, J. Muller, F. Grewe, and GENDER Journal, Eds., Brisante Wahrheiten – eine andere Geschichte der Philosophie , vol. 25, no. 2. Barbara Budrich Verlag, 2025. mla: 'Hagengruber, Ruth Edith, et al., editors. “Brisante Wahrheiten – Eine Andere Geschichte Der Philosophie .” GENDER: Zeitschrift, Geschlecht, Kultur Und Gesellschaft - Frauen in Der Geschichte Der Philosophie, vol. 25, no. 2, Barbara Budrich Verlag, 2025.' short: R.E. Hagengruber, J. Muller, F. Grewe, GENDER Journal, eds., Brisante Wahrheiten – Eine Andere Geschichte Der Philosophie , Barbara Budrich Verlag, 2025. corporate_editor: - GENDER Journal date_created: 2024-07-05T09:47:31Z date_updated: 2026-02-16T12:40:54Z department: - _id: '519' editor: - first_name: Ruth Edith full_name: Hagengruber, Ruth Edith id: '198' last_name: Hagengruber orcid: https://orcid.org/0000-0003-3360-6335 - first_name: Jil full_name: Muller, Jil id: '91668' last_name: Muller orcid: 0000-0002-4394-7531 - first_name: Felix full_name: Grewe, Felix id: '32146' last_name: Grewe intvolume: ' 25' issue: '2' language: - iso: eng - iso: ger main_file_link: - open_access: '1' url: https://budrich-journals.de/index.php/gender oa: '1' page: '160' publication: 'GENDER: Zeitschrift, Geschlecht, Kultur und Gesellschaft - Frauen in der Geschichte der Philosophie' publication_identifier: unknown: - '1868-7245 ' publication_status: published publisher: Barbara Budrich Verlag status: public title: 'Brisante Wahrheiten – eine andere Geschichte der Philosophie ' type: journal_editor user_id: '91668' volume: 25 year: '2025' ... --- _id: '62188' author: - first_name: Mats full_name: Vernholz, Mats id: '76955' last_name: Vernholz orcid: 0000-0001-5175-357X - first_name: Gabriela full_name: Jonas-Ahrend, Gabriela id: '77633' last_name: Jonas-Ahrend orcid: 0000-0003-3898-954X - first_name: Katrin full_name: Temmen, Katrin id: '30086' last_name: Temmen citation: ama: 'Vernholz M, Jonas-Ahrend G, Temmen K. „Und ich sag mal, Theorie und Praxis ist zweierlei“. Wie können Praxisphasen Lehramtsstudierende auf zukünftige Anforderungen vorbereiten? . In: Wiemer T, Binder M, Penning I, eds. Zukünfte technischer Bildung. Vol 26. Jahrestagungen der Deutschen Gesellschaft für Technische Bildung e.V. . ; 2025. doi:https://doi.org/10.25932/publishup-67926' apa: Vernholz, M., Jonas-Ahrend, G., & Temmen, K. (2025). „Und ich sag mal, Theorie und Praxis ist zweierlei“. Wie können Praxisphasen Lehramtsstudierende auf zukünftige Anforderungen vorbereiten? . In T. Wiemer, M. Binder, & I. Penning (Eds.), Zukünfte technischer Bildung (Vol. 26). https://doi.org/10.25932/publishup-67926 bibtex: '@inbook{Vernholz_Jonas-Ahrend_Temmen_2025, place={Universitätsverlag Potsdam}, series={Jahrestagungen der Deutschen Gesellschaft für Technische Bildung e.V. }, title={„Und ich sag mal, Theorie und Praxis ist zweierlei“. Wie können Praxisphasen Lehramtsstudierende auf zukünftige Anforderungen vorbereiten? }, volume={26}, DOI={https://doi.org/10.25932/publishup-67926}, booktitle={Zukünfte technischer Bildung}, author={Vernholz, Mats and Jonas-Ahrend, Gabriela and Temmen, Katrin}, editor={Wiemer, Tobias and Binder, Martin and Penning, Isabelle}, year={2025}, collection={Jahrestagungen der Deutschen Gesellschaft für Technische Bildung e.V. } }' chicago: Vernholz, Mats, Gabriela Jonas-Ahrend, and Katrin Temmen. “„Und ich sag mal, Theorie und Praxis ist zweierlei“. Wie können Praxisphasen Lehramtsstudierende auf zukünftige Anforderungen vorbereiten? .” In Zukünfte technischer Bildung, edited by Tobias Wiemer, Martin Binder, and Isabelle Penning, Vol. 26. Jahrestagungen der Deutschen Gesellschaft für Technische Bildung e.V. . Universitätsverlag Potsdam, 2025. https://doi.org/10.25932/publishup-67926. ieee: M. Vernholz, G. Jonas-Ahrend, and K. Temmen, “„Und ich sag mal, Theorie und Praxis ist zweierlei“. Wie können Praxisphasen Lehramtsstudierende auf zukünftige Anforderungen vorbereiten? ,” in Zukünfte technischer Bildung, vol. 26, T. Wiemer, M. Binder, and I. Penning, Eds. Universitätsverlag Potsdam, 2025. mla: Vernholz, Mats, et al. “„Und ich sag mal, Theorie und Praxis ist zweierlei“. Wie können Praxisphasen Lehramtsstudierende auf zukünftige Anforderungen vorbereiten? .” Zukünfte technischer Bildung, edited by Tobias Wiemer et al., vol. 26, 2025, doi:https://doi.org/10.25932/publishup-67926. short: 'M. Vernholz, G. Jonas-Ahrend, K. Temmen, in: T. Wiemer, M. Binder, I. Penning (Eds.), Zukünfte technischer Bildung, Universitätsverlag Potsdam, 2025.' conference: end_date: 2024-09-20 location: Halle/Saale name: Deutsche Gesellschaft für Technische Bildung (DGTB) start_date: 2024-09-18 date_created: 2025-11-14T10:52:10Z date_updated: 2026-02-17T07:52:34Z ddc: - '370' department: - _id: '300' doi: https://doi.org/10.25932/publishup-67926 editor: - first_name: Tobias full_name: Wiemer, Tobias last_name: Wiemer - first_name: Martin full_name: Binder, Martin last_name: Binder - first_name: Isabelle full_name: Penning, Isabelle last_name: Penning file: - access_level: closed content_type: application/pdf creator: maver001 date_created: 2025-11-21T08:30:09Z date_updated: 2025-11-21T08:30:09Z file_id: '62273' file_name: dgtb26.pdf file_size: 9953811 relation: main_file success: 1 file_date_updated: 2025-11-21T08:30:09Z has_accepted_license: '1' intvolume: ' 26' language: - iso: ger main_file_link: - open_access: '1' oa: '1' place: Universitätsverlag Potsdam publication: Zukünfte technischer Bildung publication_status: published series_title: 'Jahrestagungen der Deutschen Gesellschaft für Technische Bildung e.V. ' status: public title: '„Und ich sag mal, Theorie und Praxis ist zweierlei“. Wie können Praxisphasen Lehramtsstudierende auf zukünftige Anforderungen vorbereiten? ' type: book_chapter user_id: '76955' volume: 26 year: '2025' ... --- _id: '61121' author: - first_name: Volker full_name: Peckhaus, Volker id: '391' last_name: Peckhaus citation: ama: Peckhaus V. Franke-Reddig, Julia, „Bernard Bolzano im Kontext der Logikgeschichtsschreibung von Heinrich Scholz“, SieB. Siegener Beiträge zur Geschichte und Philosophie der Mathematik 18 (2024), 155–175. zbMATH Open, Zbl 08058231. Published online 2025. apa: Peckhaus, V. (2025). Franke-Reddig, Julia, „Bernard Bolzano im Kontext der Logikgeschichtsschreibung von Heinrich Scholz“, SieB. Siegener Beiträge zur Geschichte und Philosophie der Mathematik 18 (2024), 155–175. In zbMATH Open, Zbl. 08058231. bibtex: '@article{Peckhaus_2025, title={Franke-Reddig, Julia, „Bernard Bolzano im Kontext der Logikgeschichtsschreibung von Heinrich Scholz“, SieB. Siegener Beiträge zur Geschichte und Philosophie der Mathematik 18 (2024), 155–175}, journal={zbMATH Open, Zbl. 08058231}, author={Peckhaus, Volker}, year={2025} }' chicago: Peckhaus, Volker. “Franke-Reddig, Julia, „Bernard Bolzano Im Kontext Der Logikgeschichtsschreibung von Heinrich Scholz“, SieB. Siegener Beiträge Zur Geschichte Und Philosophie Der Mathematik 18 (2024), 155–175.” ZbMATH Open, Zbl. 08058231, 2025. ieee: V. Peckhaus, “Franke-Reddig, Julia, „Bernard Bolzano im Kontext der Logikgeschichtsschreibung von Heinrich Scholz“, SieB. Siegener Beiträge zur Geschichte und Philosophie der Mathematik 18 (2024), 155–175,” zbMATH Open, Zbl. 08058231. 2025. mla: Peckhaus, Volker. “Franke-Reddig, Julia, „Bernard Bolzano Im Kontext Der Logikgeschichtsschreibung von Heinrich Scholz“, SieB. Siegener Beiträge Zur Geschichte Und Philosophie Der Mathematik 18 (2024), 155–175.” ZbMATH Open, Zbl. 08058231, 2025. short: V. Peckhaus, ZbMATH Open, Zbl. 08058231 (2025). date_created: 2025-09-03T13:56:07Z date_updated: 2026-02-19T10:10:27Z department: - _id: '520' language: - iso: eng main_file_link: - open_access: '1' url: https://zbmath.org/8058231 oa: '1' publication: zbMATH Open, Zbl. 08058231 status: public title: Franke-Reddig, Julia, „Bernard Bolzano im Kontext der Logikgeschichtsschreibung von Heinrich Scholz“, SieB. Siegener Beiträge zur Geschichte und Philosophie der Mathematik 18 (2024), 155–175 type: review user_id: '14972' year: '2025' ... --- _id: '63181' abstract: - lang: eng text: "\r\n Purpose\r\n This study aims to explore the current state of generative artificial intelligence (genAI) in the workplace and discuss a potential digital divide in relation to genAI.\r\n \r\n \r\n \ Design/methodology/approach\r\n Using a quantitative approach, we study career-relevant predictors – family socio-economic status, education and work characteristics – and their relationship with different indicators of digital divide – access, genAI use, attitude toward AI and perceived AI literacy. To test our hypothesis, we used logistic and linear regression analyses. Additionally, latent profile analysis was conducted to identify patterns regarding work characteristics within the sample.\r\n \r\n \ \r\n Findings\r\n \ Among the 1,341 participants, 326 individuals were genAI users. Our results show that higher family socio-economic status, education and enriched and demanding work can be linked to a more positive attitude toward AI and higher perceived AI literacy. In the case of access and frequency of use, the results were mixed.\r\n \r\n \r\n \ Originality/value\r\n Our findings offer a novel contribution by examining a potentially upcoming digital divide in the case of genAI. We focus on how the career adaptation of the workforce might develop in the age of genAI. Importantly, we highlight that not all individuals may have an equal opportunity to adapt to genAI, which could hinder their future career development and reinforce patterns of inequality. Future research should address how to promote inclusivity and consider individual differences in adapting to genAI.\r\n " author: - first_name: Katharina full_name: Neufeld, Katharina last_name: Neufeld - first_name: Sandra full_name: Ohly, Sandra last_name: Ohly - first_name: Didem full_name: Sedefoglu-Ulucak, Didem last_name: Sedefoglu-Ulucak - first_name: Isabel full_name: Steinhardt, Isabel id: '90339' last_name: Steinhardt orcid: https://orcid.org/0000-0002-2590-6189 - first_name: Sylvi full_name: Mauermeister, Sylvi id: '98032' last_name: Mauermeister citation: ama: Neufeld K, Ohly S, Sedefoglu-Ulucak D, Steinhardt I, Mauermeister S. Analyzing the role of family socio-economic status, education and work characteristics in times of generative artificial intelligence and digital divide. Career Development International. Published online 2025:1-19. doi:10.1108/cdi-10-2024-0442 apa: Neufeld, K., Ohly, S., Sedefoglu-Ulucak, D., Steinhardt, I., & Mauermeister, S. (2025). Analyzing the role of family socio-economic status, education and work characteristics in times of generative artificial intelligence and digital divide. Career Development International, 1–19. https://doi.org/10.1108/cdi-10-2024-0442 bibtex: '@article{Neufeld_Ohly_Sedefoglu-Ulucak_Steinhardt_Mauermeister_2025, title={Analyzing the role of family socio-economic status, education and work characteristics in times of generative artificial intelligence and digital divide}, DOI={10.1108/cdi-10-2024-0442}, journal={Career Development International}, publisher={Emerald}, author={Neufeld, Katharina and Ohly, Sandra and Sedefoglu-Ulucak, Didem and Steinhardt, Isabel and Mauermeister, Sylvi}, year={2025}, pages={1–19} }' chicago: Neufeld, Katharina, Sandra Ohly, Didem Sedefoglu-Ulucak, Isabel Steinhardt, and Sylvi Mauermeister. “Analyzing the Role of Family Socio-Economic Status, Education and Work Characteristics in Times of Generative Artificial Intelligence and Digital Divide.” Career Development International, 2025, 1–19. https://doi.org/10.1108/cdi-10-2024-0442. ieee: 'K. Neufeld, S. Ohly, D. Sedefoglu-Ulucak, I. Steinhardt, and S. Mauermeister, “Analyzing the role of family socio-economic status, education and work characteristics in times of generative artificial intelligence and digital divide,” Career Development International, pp. 1–19, 2025, doi: 10.1108/cdi-10-2024-0442.' mla: Neufeld, Katharina, et al. “Analyzing the Role of Family Socio-Economic Status, Education and Work Characteristics in Times of Generative Artificial Intelligence and Digital Divide.” Career Development International, Emerald, 2025, pp. 1–19, doi:10.1108/cdi-10-2024-0442. short: K. Neufeld, S. Ohly, D. Sedefoglu-Ulucak, I. Steinhardt, S. Mauermeister, Career Development International (2025) 1–19. date_created: 2025-12-17T09:07:27Z date_updated: 2026-02-20T11:21:28Z ddc: - '300' department: - _id: '121' doi: 10.1108/cdi-10-2024-0442 file: - access_level: closed content_type: application/pdf creator: isste date_created: 2025-12-17T09:10:18Z date_updated: 2025-12-17T09:10:18Z file_id: '63182' file_name: 2025 Neufeld et al. DD Family Career.pdf file_size: 718834 relation: main_file success: 1 file_date_updated: 2025-12-17T09:10:18Z has_accepted_license: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://www.emerald.com/cdi/article/doi/10.1108/CDI-10-2024-0442/1310335 oa: '1' page: 1-19 publication: Career Development International publication_identifier: issn: - 1362-0436 - 1758-6003 publication_status: published publisher: Emerald quality_controlled: '1' status: public title: Analyzing the role of family socio-economic status, education and work characteristics in times of generative artificial intelligence and digital divide type: journal_article user_id: '90339' year: '2025' ... --- _id: '58163' abstract: - lang: eng text: Fibre-reinforced polymers are increasingly used due to their high specific strength, making them suitable for local sheet metal reinforcement. This allows improved overall mechanical properties with reduced wall thickness of the sheet metal part and, thus, lower weight of the components. One of the main focuses of research into such hybrid structures is on the adhesive properties and the respective failure behaviour of the interfaces. Generally, the failure behaviour under the influence of mechanical loads can be divided into adhesive, cohesive and mixed-mode failure. The correlation between observed failure behaviour and adhesion properties of the hybrid composite materials is analysed in detail in this work. The hybrid composite consists of an aluminium sheet of the alloy EN AW‑6082 T6 and thermoset carbon fibre-reinforced plastic (CFRP) prepreg. The aluminium sheet was laser pretreated before hybrid production to improve the adhesion properties. The specimens studied were produced by the prepreg pressing process, in which the components are cured and joined simultaneously. The influences of the thickness of the CFRP part, the layup, the fibre orientation at the boundary layer, and the laser pretreatment parameters on the properties of the hybrid joints were investigated. article_type: original author: - first_name: Shuang full_name: Wu, Shuang id: '48039' last_name: Wu orcid: 0000-0001-8645-9952 - first_name: Alexander full_name: Delp, Alexander last_name: Delp - first_name: Jonathan full_name: Freund, Jonathan last_name: Freund - first_name: Frank full_name: Walther, Frank last_name: Walther - first_name: Jan full_name: Haubrich, Jan last_name: Haubrich - first_name: Miriam full_name: Löbbecke, Miriam last_name: Löbbecke - first_name: Thomas full_name: Tröster, Thomas id: '553' last_name: Tröster citation: ama: Wu S, Delp A, Freund J, et al. Correlation between interlaminar shear strength of CFRP and joint strength of aluminium-CFRP hybrid joints. The Journal of Adhesion. Published online 2025:1-26. doi:10.1080/00218464.2024.2439956 apa: Wu, S., Delp, A., Freund, J., Walther, F., Haubrich, J., Löbbecke, M., & Tröster, T. (2025). Correlation between interlaminar shear strength of CFRP and joint strength of aluminium-CFRP hybrid joints. The Journal of Adhesion, 1–26. https://doi.org/10.1080/00218464.2024.2439956 bibtex: '@article{Wu_Delp_Freund_Walther_Haubrich_Löbbecke_Tröster_2025, title={Correlation between interlaminar shear strength of CFRP and joint strength of aluminium-CFRP hybrid joints}, DOI={10.1080/00218464.2024.2439956}, journal={The Journal of Adhesion}, publisher={Informa UK Limited}, author={Wu, Shuang and Delp, Alexander and Freund, Jonathan and Walther, Frank and Haubrich, Jan and Löbbecke, Miriam and Tröster, Thomas}, year={2025}, pages={1–26} }' chicago: Wu, Shuang, Alexander Delp, Jonathan Freund, Frank Walther, Jan Haubrich, Miriam Löbbecke, and Thomas Tröster. “Correlation between Interlaminar Shear Strength of CFRP and Joint Strength of Aluminium-CFRP Hybrid Joints.” The Journal of Adhesion, 2025, 1–26. https://doi.org/10.1080/00218464.2024.2439956. ieee: 'S. Wu et al., “Correlation between interlaminar shear strength of CFRP and joint strength of aluminium-CFRP hybrid joints,” The Journal of Adhesion, pp. 1–26, 2025, doi: 10.1080/00218464.2024.2439956.' mla: Wu, Shuang, et al. “Correlation between Interlaminar Shear Strength of CFRP and Joint Strength of Aluminium-CFRP Hybrid Joints.” The Journal of Adhesion, Informa UK Limited, 2025, pp. 1–26, doi:10.1080/00218464.2024.2439956. short: S. Wu, A. Delp, J. Freund, F. Walther, J. Haubrich, M. Löbbecke, T. Tröster, The Journal of Adhesion (2025) 1–26. date_created: 2025-01-13T08:16:46Z date_updated: 2026-02-20T12:49:17Z department: - _id: '321' - _id: '149' - _id: '9' doi: 10.1080/00218464.2024.2439956 keyword: - Prepreg pressing process - hybrid joints - laser surface pretreatment - intrinsic manufacturing - CFRP - aluminium - materials engineering language: - iso: eng main_file_link: - open_access: '1' url: https://www.tandfonline.com/doi/full/10.1080/00218464.2024.2439956?src= oa: '1' page: 1-26 publication: The Journal of Adhesion publication_identifier: issn: - 0021-8464 - 1545-5823 publication_status: published publisher: Informa UK Limited quality_controlled: '1' status: public title: Correlation between interlaminar shear strength of CFRP and joint strength of aluminium-CFRP hybrid joints type: journal_article user_id: '48039' year: '2025' ... --- _id: '63076' abstract: - lang: eng text: This paper develops a new concept and framework for understanding resilient digital democracy in an age defined by polarisation, cascading crises, and the global rise of digital authoritarianism. It begins by tracing the concept of resilience from systems theory to social and political life, showing that resilience in democracy is not a mechanical property of systems but a dynamic, human-driven practice grounded in agency, resistance, and collective self-determination. The paper argues that with emerging challenges in the digital sphere, such as misinformation, surveillance capitalism, platform monopolies, deepfakes, and hybrid warfare, democracy can only endure if its digital dimensions are protected and transformed. Building on this foundation, the paper introduces a holistic approach to resilient digital democracy that spans environmental, technological, economic, political, and cultural domains, and advances strategies such as public-commons digital infrastructures, platform co-operatives, public service Internet platforms, free/libre open source software (FLOSS), participatory innovations, and hybrid offline/online democratic practices. The result is a fresh, interdisciplinary vision of how democracy can be reinvented in the digital age. article_number: '387' article_type: original author: - first_name: Christian full_name: Fuchs, Christian id: '21863' last_name: Fuchs orcid: 0000-0003-0589-4579 citation: ama: Fuchs C. What is and how do we Achieve a Resilient Digital Democracy? Open Research Europe. 2025;5. doi:10.12688/openreseurope.21988.2 apa: Fuchs, C. (2025). What is and how do we Achieve a Resilient Digital Democracy? Open Research Europe, 5, Article 387. https://doi.org/10.12688/openreseurope.21988.2 bibtex: '@article{Fuchs_2025, title={What is and how do we Achieve a Resilient Digital Democracy?}, volume={5}, DOI={10.12688/openreseurope.21988.2}, number={387}, journal={Open Research Europe}, publisher={F1000 Research Ltd}, author={Fuchs, Christian}, year={2025} }' chicago: Fuchs, Christian. “What Is and How Do We Achieve a Resilient Digital Democracy?” Open Research Europe 5 (2025). https://doi.org/10.12688/openreseurope.21988.2. ieee: 'C. Fuchs, “What is and how do we Achieve a Resilient Digital Democracy?,” Open Research Europe, vol. 5, Art. no. 387, 2025, doi: 10.12688/openreseurope.21988.2.' mla: Fuchs, Christian. “What Is and How Do We Achieve a Resilient Digital Democracy?” Open Research Europe, vol. 5, 387, F1000 Research Ltd, 2025, doi:10.12688/openreseurope.21988.2. short: C. Fuchs, Open Research Europe 5 (2025). date_created: 2025-12-12T18:21:20Z date_updated: 2026-02-23T20:51:40Z department: - _id: '136' - _id: '11' doi: 10.12688/openreseurope.21988.2 has_accepted_license: '1' intvolume: ' 5' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.12688/openreseurope.21988.2 oa: '1' project: - _id: '1397' name: INNOVAtive DEmocracy Through Digitalisation publication: Open Research Europe publication_identifier: issn: - 2732-5121 publication_status: published publisher: F1000 Research Ltd quality_controlled: '1' status: public title: What is and how do we Achieve a Resilient Digital Democracy? type: journal_article user_id: '21863' volume: 5 year: '2025' ... --- _id: '59872' abstract: - lang: eng text: Lightweight design is a driving concept in modern automotive engineering to minimize resource consumption over a vehicle's lifecycle through multi-material design, which relies on the use of joining techniques in car body fabrication. Multi-material design and the increasing trend towards producing large structural components using the megacasting process pose considerable challenges, particularly in the mechanical joining of aluminium-silicon (AlSi) castings. These castings typically exhibit low ductility and are prone to cracking when mechanically joined. Based on the excellent castability of hypoeutectic AlSi alloys, these are applied in sand casting and die casting as well as in megacasting. With a silicon content between 7 wt% and 12 wt%, these AlSi-alloys have a plate-like silicon phase that initiates cracks during mechanical joining. To enhance the joinability of castings, the research hypothesis is that improved solidification conditions enable a significant modification in the microstructure and therefore, increase the mechanical properties. During the manufacture of the castings using the sand casting process, the solidification conditions within the structural elements are varied to modify the microstructure to obtain castings with graded microstructure. The castings are evaluated using mechanical, microstructural and joining testing methods and finally, a microstructure-joinability correlation is established. article_number: '01081' article_type: original author: - first_name: Moritz full_name: Neuser, Moritz id: '32340' last_name: Neuser - first_name: Malte Christian full_name: Schlichter, Malte Christian id: '61977' last_name: Schlichter - first_name: Kay-Peter full_name: Hoyer, Kay-Peter id: '48411' last_name: Hoyer - 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, Schlichter MC, Hoyer K-P, Bobbert M, Meschut G, Schaper M. Mechanical joinability of microstructurally graded structural components manufactured from hypoeutectic aluminium casting alloys. 44th Conference of the International Deep Drawing Research Group (IDDRG 2025). 2025;408. doi:10.1051/matecconf/202540801081 apa: Neuser, M., Schlichter, M. C., Hoyer, K.-P., Bobbert, M., Meschut, G., & Schaper, M. (2025). Mechanical joinability of microstructurally graded structural components manufactured from hypoeutectic aluminium casting alloys. 44th Conference of the International Deep Drawing Research Group (IDDRG 2025), 408, Article 01081. https://doi.org/10.1051/matecconf/202540801081 bibtex: '@article{Neuser_Schlichter_Hoyer_Bobbert_Meschut_Schaper_2025, title={Mechanical joinability of microstructurally graded structural components manufactured from hypoeutectic aluminium casting alloys}, volume={408}, DOI={10.1051/matecconf/202540801081}, number={01081}, journal={44th Conference of the International Deep Drawing Research Group (IDDRG 2025)}, author={Neuser, Moritz and Schlichter, Malte Christian and Hoyer, Kay-Peter and Bobbert, Mathias and Meschut, Gerson and Schaper, Mirko}, year={2025} }' chicago: Neuser, Moritz, Malte Christian Schlichter, Kay-Peter Hoyer, Mathias Bobbert, Gerson Meschut, and Mirko Schaper. “Mechanical Joinability of Microstructurally Graded Structural Components Manufactured from Hypoeutectic Aluminium Casting Alloys.” 44th Conference of the International Deep Drawing Research Group (IDDRG 2025) 408 (2025). https://doi.org/10.1051/matecconf/202540801081. ieee: 'M. Neuser, M. C. Schlichter, K.-P. Hoyer, M. Bobbert, G. Meschut, and M. Schaper, “Mechanical joinability of microstructurally graded structural components manufactured from hypoeutectic aluminium casting alloys,” 44th Conference of the International Deep Drawing Research Group (IDDRG 2025), vol. 408, Art. no. 01081, 2025, doi: 10.1051/matecconf/202540801081.' mla: Neuser, Moritz, et al. “Mechanical Joinability of Microstructurally Graded Structural Components Manufactured from Hypoeutectic Aluminium Casting Alloys.” 44th Conference of the International Deep Drawing Research Group (IDDRG 2025), vol. 408, 01081, 2025, doi:10.1051/matecconf/202540801081. short: M. Neuser, M.C. Schlichter, K.-P. Hoyer, M. Bobbert, G. Meschut, M. Schaper, 44th Conference of the International Deep Drawing Research Group (IDDRG 2025) 408 (2025). conference: end_date: 2025-06-05 location: Lissabon (Portugal) name: 44th Conference of the International Deep Drawing Research Group (IDDRG 2025) start_date: 2025-06-02 date_created: 2025-05-12T15:21:06Z date_updated: 2026-02-24T13:41:58Z department: - _id: '43' - _id: '158' - _id: '157' - _id: '9' - _id: '321' doi: 10.1051/matecconf/202540801081 intvolume: ' 408' keyword: - Joining - Casting - Self-pierce riveting - Aluminium casting alloy language: - iso: eng main_file_link: - open_access: '1' url: "\thttps://doi.org/10.1051/matecconf/202540801081" oa: '1' project: - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '136' name: 'TRR 285 – A02: TRR 285 - Subproject A02' - _id: '135' name: 'TRR 285 – A01: TRR 285 - Subproject A01' - _id: '130' name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten' publication: 44th Conference of the International Deep Drawing Research Group (IDDRG 2025) publication_status: published quality_controlled: '1' status: public title: Mechanical joinability of microstructurally graded structural components manufactured from hypoeutectic aluminium casting alloys type: journal_article user_id: '7850' volume: 408 year: '2025' ... --- _id: '63830' abstract: - lang: eng text: " This study investigates the effect of dispersion gas (DG) flow on the formation and properties of maghemite (γ-Fe2O3) nanoparticles using standardized SpraySyn burners (SS1 and SS2). Several diagnostics were employed to characterize the spray and nanoparticles. \r\nIncreasing DG flow (6 - 12 slm) results in smaller droplet sizes (DS), cooler flame temperatures, shorter high-temperature droplet/particle residence times, and smaller agglomerates in the size range of 5 - 12 nm with narrower primary particle size distribution, corresponding to higher mass fractal dimensions, as supported by TEM and SMPS analysis, resulting in more compact agglomerates. BET and TEM confirmed decreasing primary particle sizes with increasing DG flow. Raman and XRD analyses predominantly identified maghemite, which shows a bimodal distribution of crystallite sizes, while SS1 samples have a greater proportion of larger crystallites.\r\nThe self-preserving size distributions of agglomerates with a geometric standard deviation of 1.5 are reached faster with increasing DG flow. The barrier effect of DG observed in SS1 leads to slower droplet combustion kinetics, higher temperatures, and delayed precursor release, which, along with downstream flow recirculation, result in significantly higher agglomeration rates outside the visible flame. SS2 demonstrates improved atomization, more stable flames, and finer, uniform nanoparticles with less carbonaceous residues (CR). Conversely, SS1 showed broader DS distributions and higher CR levels on the γ-Fe2O3 surface, especially at higher DG flow.\r\nThis work highlights the essential role of DG flow and nozzle geometry in controlling droplet evaporation, flame stability, and nanoparticle growth, offering insights for optimizing SFS and validating numerical models.\r\n" article_number: '121992' article_type: original author: - first_name: Orlando full_name: Massopo, Orlando last_name: Massopo - first_name: Ricardo full_name: Tischendorf, Ricardo last_name: Tischendorf - first_name: Munko full_name: Gonchikzhapov, Munko last_name: Gonchikzhapov - first_name: Tina full_name: Kasper, Tina last_name: Kasper - first_name: Peter full_name: Augustin, Peter last_name: Augustin - first_name: Burak full_name: Özer, Burak last_name: Özer - first_name: Manuel full_name: Reddemann, Manuel last_name: Reddemann - first_name: Reinhold full_name: Kneer, Reinhold last_name: Kneer - first_name: Mohammed-Ali full_name: Sheikh, Mohammed-Ali last_name: Sheikh - first_name: Aydan Akyildiz full_name: Mert, Aydan Akyildiz last_name: Mert - first_name: Hartmut full_name: Wiggers, Hartmut last_name: Wiggers - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim last_name: Schmid citation: ama: Massopo O, Tischendorf R, Gonchikzhapov M, et al. Influence of dispersion gas flow on the spray characteristics and γ-Fe2O3 nanoparticles formation and properties in reference SpraySyn burners. Powder Technology. 2025;470. doi:10.1016/j.powtec.2025.121992 apa: Massopo, O., Tischendorf, R., Gonchikzhapov, M., Kasper, T., Augustin, P., Özer, B., Reddemann, M., Kneer, R., Sheikh, M.-A., Mert, A. A., Wiggers, H., & Schmid, H.-J. (2025). Influence of dispersion gas flow on the spray characteristics and γ-Fe2O3 nanoparticles formation and properties in reference SpraySyn burners. Powder Technology, 470, Article 121992. https://doi.org/10.1016/j.powtec.2025.121992 bibtex: '@article{Massopo_Tischendorf_Gonchikzhapov_Kasper_Augustin_Özer_Reddemann_Kneer_Sheikh_Mert_et al._2025, title={Influence of dispersion gas flow on the spray characteristics and γ-Fe2O3 nanoparticles formation and properties in reference SpraySyn burners}, volume={470}, DOI={10.1016/j.powtec.2025.121992}, number={121992}, journal={Powder Technology}, publisher={Elsevier BV}, author={Massopo, Orlando and Tischendorf, Ricardo and Gonchikzhapov, Munko and Kasper, Tina and Augustin, Peter and Özer, Burak and Reddemann, Manuel and Kneer, Reinhold and Sheikh, Mohammed-Ali and Mert, Aydan Akyildiz and et al.}, year={2025} }' chicago: Massopo, Orlando, Ricardo Tischendorf, Munko Gonchikzhapov, Tina Kasper, Peter Augustin, Burak Özer, Manuel Reddemann, et al. “Influence of Dispersion Gas Flow on the Spray Characteristics and γ-Fe2O3 Nanoparticles Formation and Properties in Reference SpraySyn Burners.” Powder Technology 470 (2025). https://doi.org/10.1016/j.powtec.2025.121992. ieee: 'O. Massopo et al., “Influence of dispersion gas flow on the spray characteristics and γ-Fe2O3 nanoparticles formation and properties in reference SpraySyn burners,” Powder Technology, vol. 470, Art. no. 121992, 2025, doi: 10.1016/j.powtec.2025.121992.' mla: Massopo, Orlando, et al. “Influence of Dispersion Gas Flow on the Spray Characteristics and γ-Fe2O3 Nanoparticles Formation and Properties in Reference SpraySyn Burners.” Powder Technology, vol. 470, 121992, Elsevier BV, 2025, doi:10.1016/j.powtec.2025.121992. short: O. Massopo, R. Tischendorf, M. Gonchikzhapov, T. Kasper, P. Augustin, B. Özer, M. Reddemann, R. Kneer, M.-A. Sheikh, A.A. Mert, H. Wiggers, H.-J. Schmid, Powder Technology 470 (2025). date_created: 2026-02-02T11:41:04Z date_updated: 2026-02-25T07:45:44Z doi: 10.1016/j.powtec.2025.121992 intvolume: ' 470' keyword: - Spray flame synthesis - iron oxide nanoparticle - SpraySyn burner - Dispersion gas - Coaxial atomization - HiaT-SMPS language: - iso: eng main_file_link: - open_access: '1' oa: '1' publication: Powder Technology publication_identifier: issn: - 0032-5910 publication_status: published publisher: Elsevier BV status: public title: Influence of dispersion gas flow on the spray characteristics and γ-Fe2O3 nanoparticles formation and properties in reference SpraySyn burners type: journal_article user_id: '98419' volume: 470 year: '2025' ... --- _id: '64770' author: - first_name: Matthieu full_name: Pinaud, Matthieu last_name: Pinaud citation: ama: Pinaud M. Manifold of Mappings and Regularity Properties of Half-Lie Groups.; 2025. doi:10.17619/UNIPB/1-2211 apa: Pinaud, M. (2025). Manifold of mappings and regularity properties of half-Lie groups. https://doi.org/10.17619/UNIPB/1-2211 bibtex: '@book{Pinaud_2025, title={Manifold of mappings and regularity properties of half-Lie groups}, DOI={10.17619/UNIPB/1-2211}, author={Pinaud, Matthieu}, year={2025} }' chicago: Pinaud, Matthieu. Manifold of Mappings and Regularity Properties of Half-Lie Groups, 2025. https://doi.org/10.17619/UNIPB/1-2211. ieee: M. Pinaud, Manifold of mappings and regularity properties of half-Lie groups. 2025. mla: Pinaud, Matthieu. Manifold of Mappings and Regularity Properties of Half-Lie Groups. 2025, doi:10.17619/UNIPB/1-2211. short: M. Pinaud, Manifold of Mappings and Regularity Properties of Half-Lie Groups, 2025. date_created: 2026-02-26T21:58:22Z date_updated: 2026-02-26T21:58:36Z department: - _id: '10' - _id: '87' - _id: '93' doi: 10.17619/UNIPB/1-2211 language: - iso: eng main_file_link: - open_access: '1' url: https://nbn-resolving.org/urn:nbn:de:hbz:466:2-54221 oa: '1' status: public supervisor: - first_name: Helge full_name: Glöckner, Helge id: '178' last_name: Glöckner title: Manifold of mappings and regularity properties of half-Lie groups type: dissertation user_id: '178' year: '2025' ... --- _id: '64793' abstract: - lang: eng text: The article explores the role of teachers in self-directed songwriting in school music based on the informal learning approach. It investigates a didactic design that was implemented in six schools and was empirically researched utilizing si-tuational analysis. Based on tensions, that emerge due to conflicting expectations, it can be shown, that the teacher's role extends beyond the dichotomy of directive instruction versus open facilitation. Instead, it encompasses an interplay of six divergent roles which are discussed in their positions in relation to each other. These considerations enrich the understanding of teaching practices in popular music education, emphasizing the redefinition of teacher-student relationships for song-writing in school music. author: - first_name: Marc full_name: Godau, Marc id: '98877' last_name: Godau - first_name: Julia full_name: Barreiro, Julia last_name: Barreiro - first_name: Katharina full_name: Hermann, Katharina last_name: Hermann - first_name: Timo full_name: Neuhausen, Timo id: '99991' last_name: Neuhausen orcid: 0000-0002-8262-767X - first_name: Dominik full_name: Maxelon, Dominik last_name: Maxelon - first_name: Verena full_name: Weidner, Verena last_name: Weidner citation: ama: 'Godau M, Barreiro J, Hermann K, Neuhausen T, Maxelon D, Weidner V. “Wofür bin ich denn hier, wenn ich nicht in irgendeiner Weise auch helfen kann?” Zur Rolle der Lehrkraft beim selbstständigen Songwriting im Unterricht. In: Frey-Konrad U, Hofbauer VC, Blanchard O, Bugiel L, eds. 46. Jahresband des Arbeitskreises Musikpädagogische Forschung/46th Yearbook of the German Association for Research in Music Education. Waxmann; 2025. doi:10.31244/9783818850715.13' apa: Godau, M., Barreiro, J., Hermann, K., Neuhausen, T., Maxelon, D., & Weidner, V. (2025). “Wofür bin ich denn hier, wenn ich nicht in irgendeiner Weise auch helfen kann?” Zur Rolle der Lehrkraft beim selbstständigen Songwriting im Unterricht. In U. Frey-Konrad, V. C. Hofbauer, O. Blanchard, & L. Bugiel (Eds.), 46. Jahresband des Arbeitskreises Musikpädagogische Forschung/46th Yearbook of the German Association for Research in Music Education. Waxmann. https://doi.org/10.31244/9783818850715.13 bibtex: '@inbook{Godau_Barreiro_Hermann_Neuhausen_Maxelon_Weidner_2025, title={“Wofür bin ich denn hier, wenn ich nicht in irgendeiner Weise auch helfen kann?” Zur Rolle der Lehrkraft beim selbstständigen Songwriting im Unterricht}, DOI={10.31244/9783818850715.13}, booktitle={46. Jahresband des Arbeitskreises Musikpädagogische Forschung/46th Yearbook of the German Association for Research in Music Education}, publisher={Waxmann}, author={Godau, Marc and Barreiro, Julia and Hermann, Katharina and Neuhausen, Timo and Maxelon, Dominik and Weidner, Verena}, editor={Frey-Konrad, Ute and Hofbauer, Viola Cäcilia and Blanchard, Olivier and Bugiel, Lukas}, year={2025} }' chicago: Godau, Marc, Julia Barreiro, Katharina Hermann, Timo Neuhausen, Dominik Maxelon, and Verena Weidner. “‘Wofür bin ich denn hier, wenn ich nicht in irgendeiner Weise auch helfen kann?’ Zur Rolle der Lehrkraft beim selbstständigen Songwriting im Unterricht.” In 46. Jahresband des Arbeitskreises Musikpädagogische Forschung/46th Yearbook of the German Association for Research in Music Education, edited by Ute Frey-Konrad, Viola Cäcilia Hofbauer, Olivier Blanchard, and Lukas Bugiel. Waxmann, 2025. https://doi.org/10.31244/9783818850715.13. ieee: M. Godau, J. Barreiro, K. Hermann, T. Neuhausen, D. Maxelon, and V. Weidner, “‘Wofür bin ich denn hier, wenn ich nicht in irgendeiner Weise auch helfen kann?’ Zur Rolle der Lehrkraft beim selbstständigen Songwriting im Unterricht,” in 46. Jahresband des Arbeitskreises Musikpädagogische Forschung/46th Yearbook of the German Association for Research in Music Education, U. Frey-Konrad, V. C. Hofbauer, O. Blanchard, and L. Bugiel, Eds. Waxmann, 2025. mla: Godau, Marc, et al. “‘Wofür bin ich denn hier, wenn ich nicht in irgendeiner Weise auch helfen kann?’ Zur Rolle der Lehrkraft beim selbstständigen Songwriting im Unterricht.” 46. Jahresband des Arbeitskreises Musikpädagogische Forschung/46th Yearbook of the German Association for Research in Music Education, edited by Ute Frey-Konrad et al., Waxmann, 2025, doi:10.31244/9783818850715.13. short: 'M. Godau, J. Barreiro, K. Hermann, T. Neuhausen, D. Maxelon, V. Weidner, in: U. Frey-Konrad, V.C. Hofbauer, O. Blanchard, L. Bugiel (Eds.), 46. Jahresband des Arbeitskreises Musikpädagogische Forschung/46th Yearbook of the German Association for Research in Music Education, Waxmann, 2025.' date_created: 2026-02-28T09:50:45Z date_updated: 2026-02-28T15:29:25Z department: - _id: '131' - _id: '36' - _id: '129' - _id: '540' doi: 10.31244/9783818850715.13 editor: - first_name: Ute full_name: Frey-Konrad, Ute last_name: Frey-Konrad - first_name: Viola Cäcilia full_name: Hofbauer, Viola Cäcilia last_name: Hofbauer - first_name: Olivier full_name: Blanchard, Olivier last_name: Blanchard - first_name: Lukas full_name: Bugiel, Lukas last_name: Bugiel language: - iso: ger main_file_link: - open_access: '1' oa: '1' publication: 46. Jahresband des Arbeitskreises Musikpädagogische Forschung/46th Yearbook of the German Association for Research in Music Education publication_identifier: isbn: - '9783818800710' publication_status: published publisher: Waxmann quality_controlled: '1' status: public title: '"Wofür bin ich denn hier, wenn ich nicht in irgendeiner Weise auch helfen kann?" Zur Rolle der Lehrkraft beim selbstständigen Songwriting im Unterricht' type: book_chapter user_id: '99991' year: '2025' ... --- _id: '64792' abstract: - lang: eng text: The role of institutionalized standards for the hybridization of musical practices. On the socio-materiality of songwriting-producing in the bedroom studio This study examines the socio-materiality of hybrid music practices in bedroom studios, focusing on the interplay between traditional music education institutions and YouTube education. A single case situational analysis reveals how standardized instrumental and music production practices are combined to form a hybrid practice. It shows that traditional music education institutions, such as music schools and conservatories, specialize in the selection of chord tones, while You-Tube videos focus on sound design. Using an actor-network theory approach, the study demonstrates the permeability of informal and institutional learning spaces. The findings suggest that songwriting-producing is not simply a sum of different practices, but rather a process of negotiation and compromise between different standards and goals, as well as the distribution of practice between humans and technology. author: - first_name: Timo full_name: Neuhausen, Timo id: '99991' last_name: Neuhausen orcid: 0000-0002-8262-767X citation: ama: 'Neuhausen T. Die Rolle institutionalisierter Standards für die Hybridisierung musikalischer Praxen. Zur Soziomaterialität von Songwriting-Producing im Bedroom-Studio. In: Frey-Konrad U, Hofbauer VC, Blanchard O, Bugiel L, eds. 46. Jahresband Des Arbeitskreises Musikpädagogische Forschung/46th Yearbook of the German Association for Research in Music Education. Waxmann; 2025. doi:10.31244/9783818850715.19' apa: Neuhausen, T. (2025). Die Rolle institutionalisierter Standards für die Hybridisierung musikalischer Praxen. Zur Soziomaterialität von Songwriting-Producing im Bedroom-Studio. In U. Frey-Konrad, V. C. Hofbauer, O. Blanchard, & L. Bugiel (Eds.), 46. Jahresband des Arbeitskreises Musikpädagogische Forschung/46th Yearbook of the German Association for Research in Music Education. Waxmann. https://doi.org/10.31244/9783818850715.19 bibtex: '@inbook{Neuhausen_2025, title={Die Rolle institutionalisierter Standards für die Hybridisierung musikalischer Praxen. Zur Soziomaterialität von Songwriting-Producing im Bedroom-Studio}, DOI={10.31244/9783818850715.19}, booktitle={46. Jahresband des Arbeitskreises Musikpädagogische Forschung/46th Yearbook of the German Association for Research in Music Education}, publisher={Waxmann}, author={Neuhausen, Timo}, editor={Frey-Konrad, Ute and Hofbauer, Viola Cäcilia and Blanchard, Olivier and Bugiel, Lukas}, year={2025} }' chicago: Neuhausen, Timo. “Die Rolle Institutionalisierter Standards Für Die Hybridisierung Musikalischer Praxen. Zur Soziomaterialität von Songwriting-Producing Im Bedroom-Studio.” In 46. Jahresband Des Arbeitskreises Musikpädagogische Forschung/46th Yearbook of the German Association for Research in Music Education, edited by Ute Frey-Konrad, Viola Cäcilia Hofbauer, Olivier Blanchard, and Lukas Bugiel. Waxmann, 2025. https://doi.org/10.31244/9783818850715.19. ieee: T. Neuhausen, “Die Rolle institutionalisierter Standards für die Hybridisierung musikalischer Praxen. Zur Soziomaterialität von Songwriting-Producing im Bedroom-Studio,” in 46. Jahresband des Arbeitskreises Musikpädagogische Forschung/46th Yearbook of the German Association for Research in Music Education, U. Frey-Konrad, V. C. Hofbauer, O. Blanchard, and L. Bugiel, Eds. Waxmann, 2025. mla: Neuhausen, Timo. “Die Rolle Institutionalisierter Standards Für Die Hybridisierung Musikalischer Praxen. Zur Soziomaterialität von Songwriting-Producing Im Bedroom-Studio.” 46. Jahresband Des Arbeitskreises Musikpädagogische Forschung/46th Yearbook of the German Association for Research in Music Education, edited by Ute Frey-Konrad et al., Waxmann, 2025, doi:10.31244/9783818850715.19. short: 'T. Neuhausen, in: U. Frey-Konrad, V.C. Hofbauer, O. Blanchard, L. Bugiel (Eds.), 46. Jahresband Des Arbeitskreises Musikpädagogische Forschung/46th Yearbook of the German Association for Research in Music Education, Waxmann, 2025.' date_created: 2026-02-28T09:47:25Z date_updated: 2026-02-28T15:28:48Z department: - _id: '131' - _id: '36' - _id: '129' - _id: '540' doi: 10.31244/9783818850715.19 editor: - first_name: Ute full_name: Frey-Konrad, Ute last_name: Frey-Konrad - first_name: Viola Cäcilia full_name: Hofbauer, Viola Cäcilia last_name: Hofbauer - first_name: Olivier full_name: Blanchard, Olivier last_name: Blanchard - first_name: Lukas full_name: Bugiel, Lukas last_name: Bugiel language: - iso: eng main_file_link: - open_access: '1' oa: '1' publication: 46. Jahresband des Arbeitskreises Musikpädagogische Forschung/46th Yearbook of the German Association for Research in Music Education publication_identifier: isbn: - '9783818800710' publication_status: published publisher: Waxmann quality_controlled: '1' status: public title: Die Rolle institutionalisierter Standards für die Hybridisierung musikalischer Praxen. Zur Soziomaterialität von Songwriting-Producing im Bedroom-Studio type: book_chapter user_id: '99991' year: '2025' ... --- _id: '64798' abstract: - lang: eng text: "Lead-containing piezoelectric ceramics are still the base for today’s ultrasonic transducers used in broad applications. This is partly due to missing powerful lead-free piezoelectric ceramic parts in the commercial market. There has been much research on lead-free materials but developing them into marketable parts seems to be an ongoing process. The actual exemption of ROHS has expired, but as the new exemption has already been requested, ceramic suppliers keep on selling lead containing products. Nevertheless, these should be replaced by lead-free alternatives for environmental and health issues. \r\nThis contribution focuses on exploring the technological readiness level of lead-free hard piezoceramics for prestressed ultrasonic transducers. A small series of bolted Langevin transducers was set up with standard PZT material and three commercial lead-free variants. Results of the building process from individual ring ceramic characteristics to transducer load tests are presented. The main finding of this study is that the lead-free materials technically can compete with the standard PZT for medium-power applications. Some adaptations in the ultrasonic system must be done: the geometry must be altered to fit resonance frequency, and higher voltages or thinner ceramics are needed to achieve the same vibration level at low load. For reaching same power, the volume of lead-free ceramics must be 1.5 to 3 times larger. As already promoted in literature, mechanical losses at high vibration levels are smaller for the lead-free materials. This might help to argument lead-free piezoelectric materials in some applications.\r\n\r\nReferences\r\n1.\tDirective 2011/65/EU of the European Parliament and of the Council of 8 June 2011 on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment. EUR-Lex Document 02011L0065-20240801. Available online: http://data.europa.eu/eli/dir/2011/65/2024-08-01 (accessed on 24 January 2025).\r\n2.\tLangevin, P. (1918) Method and Apparatus for Transmitting and Receiving Submarine Elastic Waves Using the Piezoelectric Properties of Quartz. French Patent Office; Patent No. FR505703.\r\n3.\tHemsel, T.; Twiefel, J. (2023) Piezoelectric Ultrasonic Power Transducers. In Encyclopedia of Materials: Electronics; Academic Press: Oxford, UK; pp. 276–285. https://doi.org/10.1016/b978-0-12-819728-8.00047-4.\r\n4.\tATHENA Technologie Beratung GmbH (2025) Description of Ultrasound Generator. Available online: http://shop.myathena.de/epages/12074748.sf/de_DE/?ObjectPath=/Shops/12074748/Products/AM200 (accessed on 13 January 2025).\r\n5.\tLittmann, W.; Hemsel, T.; Kauczor, C.; Wallaschek, J.; Sinha, W. (2003) Load-adaptive phase-controller for resonant driven piezoelectric devices. Proc. World Congr. Ultrason. 2003, 48, 547–550.\r\n6.\tScheidemann, C., Bornmann, P., Littmann, W., & Hemsel, T. (2025). Lead-Free Ceramics in Prestressed Ultrasonic Transducers. Actuators, 14(2), 55. https://doi.org/10.3390/act14020055\r\n" author: - first_name: Claus full_name: Scheidemann, Claus id: '38259' last_name: Scheidemann - first_name: Peter full_name: Bornmann, Peter last_name: Bornmann - first_name: Walter full_name: Littmann, Walter last_name: Littmann - first_name: Tobias full_name: Hemsel, Tobias id: '210' last_name: Hemsel citation: ama: 'Scheidemann C, Bornmann P, Littmann W, Hemsel T. Bolted Langevin transducers with leadfree piezoelectric ceramics. In: ; 2025.' apa: Scheidemann, C., Bornmann, P., Littmann, W., & Hemsel, T. (2025). Bolted Langevin transducers with leadfree piezoelectric ceramics. International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA), Vilnius, Lithuania. bibtex: '@inproceedings{Scheidemann_Bornmann_Littmann_Hemsel_2025, title={Bolted Langevin transducers with leadfree piezoelectric ceramics}, author={Scheidemann, Claus and Bornmann, Peter and Littmann, Walter and Hemsel, Tobias}, year={2025} }' chicago: Scheidemann, Claus, Peter Bornmann, Walter Littmann, and Tobias Hemsel. “Bolted Langevin Transducers with Leadfree Piezoelectric Ceramics,” 2025. ieee: C. Scheidemann, P. Bornmann, W. Littmann, and T. Hemsel, “Bolted Langevin transducers with leadfree piezoelectric ceramics,” presented at the International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA), Vilnius, Lithuania, 2025. mla: Scheidemann, Claus, et al. Bolted Langevin Transducers with Leadfree Piezoelectric Ceramics. 2025. short: 'C. Scheidemann, P. Bornmann, W. Littmann, T. Hemsel, in: 2025.' conference: end_date: 2025-07-03 location: Vilnius, Lithuania name: International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA) start_date: 2025-07-01 date_created: 2026-03-02T10:39:40Z date_updated: 2026-03-02T11:04:56Z ddc: - '620' department: - _id: '151' file: - access_level: open_access content_type: application/pdf creator: hemsel date_created: 2026-03-02T10:37:46Z date_updated: 2026-03-02T11:00:37Z file_id: '64799' file_name: IWPMA_2025_Hemsel.pdf file_size: 1812289 relation: main_file file_date_updated: 2026-03-02T11:00:37Z has_accepted_license: '1' keyword: - lead free piezoelectric ceramics - bolted Langevin transducer - medium power ultrasound. language: - iso: eng oa: '1' status: public title: Bolted Langevin transducers with leadfree piezoelectric ceramics type: conference user_id: '210' year: '2025' ... --- _id: '64800' abstract: - lang: eng text: "Intensive ultrasonic cleaning of surfaces by means of a lead-free ultrasonic transducer with focusing sonotrode\r\nUltrasonic cleaning baths are probably a coincidental development: After underwater sonars had already been successfully used to detect submarines before 1920, it was probably observed in this environment that the ultrasonic oscillators not only showed a self-cleaning effect but also cavitation damage. At the beginning of the 1950s, the first ultrasonic cleaning devices finally came onto the market. Today, the range of applications ranges from household appliances for jewellery and eyewear cleaning to classic cleaning baths for metal parts and systems for cleaning highly sensitive electronic components. There is a certain gap in handheld, mobile cleaning equipment. Although devices for spot cleaning of textiles are known, the cleaning effect is usually low. \r\nDue to the directive 2011/65/EU on the restriction of the use of hazardous substances in electrical and electronic equipment (RoHS) [1] lead should no longer be used in technical devices. As today’s standard ceramics for medium and high-power ultrasonic transducers typically contain lead, there is a need to explore the use of lead-free ceramics in this field. Honda [2] already offers a cleaning transducer based on lead-free piezoelectric ceramics, but it is designed to be used in cleaning baths.\r\nThis article presents the model-based development of a highly innovative ultrasonic cleaner. On the one hand, lead-free piezoelectric ceramics are used, and on the other hand, a special sonotrode has been developed that concentrates the sound in such a way that a strong cavitation and thus cleaning effect is achieved with comparatively low power in a short time. Coupled field finite element method was used to find an appropriate geometry for the focussing sonotrode. The comparison of simulation and measurement results shows that the lead-free piezoceramics used do their job well and can keep up with standard ceramics, but more ceramic volume is needed to achieve same power. An advanced control concept was elaborated to ensure continuous hard cavitation at varying distances between the sonotrode and the part to be cleaned. Cleaning results for different surfaces and contaminations are presented. The concept of the focusing sonotrode shows that a convincing cleaning result can be achieved even with low power and in short time, provided that the oscillation system and control electronics are suitably coordinated.\r\n\r\nReferences\r\n[1] http://data.europa.eu/eli/dir/2011/65/2024-08-01 \r\n[2] https://en.honda-el.co.jp/product/ceramics/lineup/lead_off/lead-off \r\n" author: - first_name: Tobias full_name: Hemsel, Tobias id: '210' last_name: Hemsel - first_name: Claus full_name: Scheidemann, Claus id: '38259' last_name: Scheidemann - first_name: Peter full_name: Bornmann, Peter last_name: Bornmann - first_name: Walter full_name: Littmann, Walter last_name: Littmann - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: 'Hemsel T, Scheidemann C, Bornmann P, Littmann W, Sextro W. Intensive ultrasonic cleaning of surfaces by means of lead-free ultrasonic transducer with focussing sonotrode. In: ; 2025.' apa: Hemsel, T., Scheidemann, C., Bornmann, P., Littmann, W., & Sextro, W. (2025). Intensive ultrasonic cleaning of surfaces by means of lead-free ultrasonic transducer with focussing sonotrode. International Congress on Ultrasonics (ICU), Paderborn, Germany. bibtex: '@inproceedings{Hemsel_Scheidemann_Bornmann_Littmann_Sextro_2025, title={Intensive ultrasonic cleaning of surfaces by means of lead-free ultrasonic transducer with focussing sonotrode}, author={Hemsel, Tobias and Scheidemann, Claus and Bornmann, Peter and Littmann, Walter and Sextro, Walter}, year={2025} }' chicago: Hemsel, Tobias, Claus Scheidemann, Peter Bornmann, Walter Littmann, and Walter Sextro. “Intensive Ultrasonic Cleaning of Surfaces by Means of Lead-Free Ultrasonic Transducer with Focussing Sonotrode,” 2025. ieee: T. Hemsel, C. Scheidemann, P. Bornmann, W. Littmann, and W. Sextro, “Intensive ultrasonic cleaning of surfaces by means of lead-free ultrasonic transducer with focussing sonotrode,” presented at the International Congress on Ultrasonics (ICU), Paderborn, Germany, 2025. mla: Hemsel, Tobias, et al. Intensive Ultrasonic Cleaning of Surfaces by Means of Lead-Free Ultrasonic Transducer with Focussing Sonotrode. 2025. short: 'T. Hemsel, C. Scheidemann, P. Bornmann, W. Littmann, W. Sextro, in: 2025.' conference: end_date: 2025-09-25 location: Paderborn, Germany name: International Congress on Ultrasonics (ICU) start_date: 2025-09-21 date_created: 2026-03-02T10:47:48Z date_updated: 2026-03-02T10:58:37Z ddc: - '620' department: - _id: '151' file: - access_level: open_access content_type: application/pdf creator: hemsel date_created: 2026-03-02T10:46:43Z date_updated: 2026-03-02T10:58:37Z file_id: '64801' file_name: ICU_2025_Hemsel.pdf file_size: 1946202 relation: main_file file_date_updated: 2026-03-02T10:58:37Z has_accepted_license: '1' language: - iso: eng oa: '1' status: public title: Intensive ultrasonic cleaning of surfaces by means of lead-free ultrasonic transducer with focussing sonotrode type: conference user_id: '210' year: '2025' ... --- _id: '61755' author: - first_name: Claus full_name: Scheidemann, Claus id: '38259' last_name: Scheidemann - first_name: Tobias full_name: Hemsel, Tobias id: '210' last_name: Hemsel - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: 'Scheidemann C, Hemsel T, Sextro W. Time dependent material characteristics of prestressed piezoelectric ceramics in langevin transducers. In: ; 2025.' apa: Scheidemann, C., Hemsel, T., & Sextro, W. (2025). Time dependent material characteristics of prestressed piezoelectric ceramics in langevin transducers. 22nd International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA), Vilnius, Lithuania. bibtex: '@inproceedings{Scheidemann_Hemsel_Sextro_2025, title={Time dependent material characteristics of prestressed piezoelectric ceramics in langevin transducers}, author={Scheidemann, Claus and Hemsel, Tobias and Sextro, Walter}, year={2025} }' chicago: Scheidemann, Claus, Tobias Hemsel, and Walter Sextro. “Time Dependent Material Characteristics of Prestressed Piezoelectric Ceramics in Langevin Transducers,” 2025. ieee: C. Scheidemann, T. Hemsel, and W. Sextro, “Time dependent material characteristics of prestressed piezoelectric ceramics in langevin transducers,” presented at the 22nd International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA), Vilnius, Lithuania, 2025. mla: Scheidemann, Claus, et al. Time Dependent Material Characteristics of Prestressed Piezoelectric Ceramics in Langevin Transducers. 2025. short: 'C. Scheidemann, T. Hemsel, W. Sextro, in: 2025.' conference: end_date: 2025-07-3 location: Vilnius, Lithuania name: 22nd International Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA) start_date: 2025-07-1 date_created: 2025-10-08T14:22:32Z date_updated: 2026-03-02T10:59:53Z ddc: - '620' department: - _id: '151' file: - access_level: open_access content_type: application/pdf creator: hemsel date_created: 2026-01-30T11:07:48Z date_updated: 2026-03-02T10:59:53Z file_id: '63817' file_name: SHS25_IWPMA_2025.pdf file_size: 644147 relation: main_file file_date_updated: 2026-03-02T10:59:53Z has_accepted_license: '1' language: - iso: eng oa: '1' project: - _id: '245' name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)' status: public title: Time dependent material characteristics of prestressed piezoelectric ceramics in langevin transducers type: conference user_id: '210' year: '2025' ... --- _id: '61757' author: - first_name: Claus full_name: Scheidemann, Claus id: '38259' last_name: Scheidemann - first_name: Julius full_name: Porzenheim, Julius last_name: Porzenheim - first_name: Tobias full_name: Hemsel, Tobias id: '210' last_name: Hemsel - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: 'Scheidemann C, Porzenheim J, Hemsel T, Sextro W. Investigation of the Setting Behaviour of Mechanically Biased Piezoelectric Ultrasonic Transducers. In: ; 2025.' apa: Scheidemann, C., Porzenheim, J., Hemsel, T., & Sextro, W. (2025). Investigation of the Setting Behaviour of Mechanically Biased Piezoelectric Ultrasonic Transducers. 2025 International Congress on Ultrasonics (ICU), Paderborn, Germany. bibtex: '@inproceedings{Scheidemann_Porzenheim_Hemsel_Sextro_2025, title={Investigation of the Setting Behaviour of Mechanically Biased Piezoelectric Ultrasonic Transducers}, author={Scheidemann, Claus and Porzenheim, Julius and Hemsel, Tobias and Sextro, Walter}, year={2025} }' chicago: Scheidemann, Claus, Julius Porzenheim, Tobias Hemsel, and Walter Sextro. “Investigation of the Setting Behaviour of Mechanically Biased Piezoelectric Ultrasonic Transducers,” 2025. ieee: C. Scheidemann, J. Porzenheim, T. Hemsel, and W. Sextro, “Investigation of the Setting Behaviour of Mechanically Biased Piezoelectric Ultrasonic Transducers,” presented at the 2025 International Congress on Ultrasonics (ICU), Paderborn, Germany, 2025. mla: Scheidemann, Claus, et al. Investigation of the Setting Behaviour of Mechanically Biased Piezoelectric Ultrasonic Transducers. 2025. short: 'C. Scheidemann, J. Porzenheim, T. Hemsel, W. Sextro, in: 2025.' conference: end_date: 2025-09-25 location: Paderborn, Germany name: 2025 International Congress on Ultrasonics (ICU) start_date: 2025-09-21 date_created: 2025-10-08T14:33:44Z date_updated: 2026-03-02T10:59:36Z ddc: - '620' department: - _id: '151' file: - access_level: open_access content_type: application/pdf creator: hemsel date_created: 2026-01-30T07:30:44Z date_updated: 2026-03-02T10:59:36Z file_id: '63816' file_name: Sch25_ICU_2025.pdf file_size: 783790 relation: main_file file_date_updated: 2026-03-02T10:59:36Z has_accepted_license: '1' language: - iso: eng oa: '1' project: - _id: '245' name: 'FOR 5208: Modellbasierte Bestimmung nichtlinearer Eigenschaften von Piezokeramiken für Leistungsschallanwendungen (NEPTUN)' status: public title: Investigation of the Setting Behaviour of Mechanically Biased Piezoelectric Ultrasonic Transducers type: conference user_id: '210' year: '2025' ... --- _id: '64611' abstract: - lang: ger text: "Für die Aufrechterhaltung der natürlichen Ressourcen ist eine effiziente Nutzung dieser essenziell. Vor diesem Hintergrund untersucht das vorliegende Paper die Rolle der Kreislaufwirtschaft als wegweisendes Wirtschaftsmodell, das von der Europäischen Union gefördert wird. Ziel der Kreislaufwirtschaft ist es, den Ressourcenverbrauch und die Abfallproduktion zu minimieren, indem ein kontinuierlicher Kreislauf aus Nutzung, Wiederverwendung und Recycling von Materialien geschaffen wird. \r\nEin zentraler Aspekt dabei ist der Produktentwicklungsprozess (PEP) - ein vielschichtiger Prozess mit zahlreichen Einflussfaktoren und theoretisch unbegrenzten Gestaltungsmöglichkeiten. Diese Vielfalt führt jedoch zu erheblichen Entscheidungsunsicherheiten, die die Umsetzung von Kreislaufwirtschaftsprinzipien erschweren können. Um diese Herausforderungen zu adressieren, wird ein methodischer Prozess vorgestellt, der eine systematische Klassifizierung im Zusammenhang mit umliegenden Bauteilen ermöglicht. Die Methodik basiert auf einer strukturierten Bewertung von Bauteilen hinsichtlich ihrer Relevanz für die Kreislaufwirtschaft. Dabei werden zentrale Aspekte wie Wiederverwendbarkeit, Recyclingfähigkeit und Ressourceneffizienz berücksichtigt, darunter: \r\n•\tHandelt es sich um ein Gebrauchs- oder Verbrauchsprodukt?\r\n•\tIst das Bauteil eine Wiederverwendung oder eine Neufertigung?\r\n•\tIst das Bauteil standardisiert, zugekauft oder individuell ausgerichtet?\r\n•\tWelche primäre Funktion nimmt das Bauteil ein?\r\nDiese strukturierte Klassifizierung unterstützt die Entscheidungsfindung bereits früh im PEP. Sie ermöglicht es Produktentwickelnden, Potenziale für die Kreislaufwirtschaft frühzeitig zu erkennen und gezielt nachhaltige Maßnahmen zu ergreifen.\r\nDie entwickelte Methodik bildet somit eine Grundlage für die Integration kreislaufwirtschaftlicher Prinzipien in den Entwicklungsprozess. Insbesondere im Kontext moderner Anforderungen des Mobility Management zeigt sich ihr Potenzial, nachhaltige Innovationen gezielt zu fördern und die Umsetzung der Kreislaufwirtschaft in der industriellen Praxis zu erleichtern." author: - first_name: Katharina full_name: Rohde, Katharina id: '70143' last_name: Rohde orcid: 0009-0000-5738-7304 - first_name: Manuel full_name: Ott, Manuel id: '44204' last_name: Ott - first_name: Finn Lukas full_name: Budde, Finn Lukas id: '74585' last_name: Budde - first_name: Iryna full_name: Mozgova, Iryna id: '95903' last_name: Mozgova citation: ama: 'Rohde K, Ott M, Budde FL, Mozgova I. Optimierung modularer Produkte für die Mobilität: Ein Klassifizierungsrahmen für zirkuläre Produkte. In: Proff H, ed. Solving Conflicts on the Way to Sustainable Mobility: Technische und betriebswirtschaftliche Aspekte. Springer Nature Meteor.' apa: 'Rohde, K., Ott, M., Budde, F. L., & Mozgova, I. (n.d.). Optimierung modularer Produkte für die Mobilität: Ein Klassifizierungsrahmen für zirkuläre Produkte. In H. Proff (Ed.), Solving Conflicts on the Way to Sustainable Mobility: Technische und betriebswirtschaftliche Aspekte. Springer Nature Meteor.' bibtex: '@inproceedings{Rohde_Ott_Budde_Mozgova, title={Optimierung modularer Produkte für die Mobilität: Ein Klassifizierungsrahmen für zirkuläre Produkte}, booktitle={Solving Conflicts on the Way to Sustainable Mobility: Technische und betriebswirtschaftliche Aspekte}, publisher={Springer Nature Meteor}, author={Rohde, Katharina and Ott, Manuel and Budde, Finn Lukas and Mozgova, Iryna}, editor={Proff, Heike} }' chicago: 'Rohde, Katharina, Manuel Ott, Finn Lukas Budde, and Iryna Mozgova. “Optimierung modularer Produkte für die Mobilität: Ein Klassifizierungsrahmen für zirkuläre Produkte.” In Solving Conflicts on the Way to Sustainable Mobility: Technische und betriebswirtschaftliche Aspekte, edited by Heike Proff. Springer Nature Meteor, n.d.' ieee: 'K. Rohde, M. Ott, F. L. Budde, and I. Mozgova, “Optimierung modularer Produkte für die Mobilität: Ein Klassifizierungsrahmen für zirkuläre Produkte,” in Solving Conflicts on the Way to Sustainable Mobility: Technische und betriebswirtschaftliche Aspekte, Duisburg.' mla: 'Rohde, Katharina, et al. “Optimierung modularer Produkte für die Mobilität: Ein Klassifizierungsrahmen für zirkuläre Produkte.” Solving Conflicts on the Way to Sustainable Mobility: Technische und betriebswirtschaftliche Aspekte, edited by Heike Proff, Springer Nature Meteor.' short: 'K. Rohde, M. Ott, F.L. Budde, I. Mozgova, in: H. Proff (Ed.), Solving Conflicts on the Way to Sustainable Mobility: Technische und betriebswirtschaftliche Aspekte, Springer Nature Meteor, n.d.' conference: location: Duisburg name: 17. Wissenschaftsforum Mobilität start_date: 2025-05-15 date_created: 2026-02-24T12:40:57Z date_updated: 2026-03-03T11:21:06Z ddc: - '620' department: - _id: '741' editor: - first_name: Heike full_name: Proff, Heike last_name: Proff has_accepted_license: '1' language: - iso: ger main_file_link: - open_access: '1' oa: '1' publication: 'Solving Conflicts on the Way to Sustainable Mobility: Technische und betriebswirtschaftliche Aspekte' publication_status: inpress publisher: Springer Nature Meteor quality_controlled: '1' status: public title: 'Optimierung modularer Produkte für die Mobilität: Ein Klassifizierungsrahmen für zirkuläre Produkte' type: conference user_id: '70143' year: '2025' ... --- _id: '61150' abstract: - lang: eng text: Since the emergence of the field of eXplainable Artificial Intelligence (XAI), a growing number of researchers have argued that XAI should consider insights from the social sciences in order to adapt explanations to the expectations and needs of human users. This has led to the emergence of a field called Social XAI, which is concerned with understanding how explanations are actively shaped in the interaction between a human user and an AI system. Recognizing this turn in XAI toward making XAI systems more “social” by providing explanations that focus on human information needs and incorporating insights from human–human explanatory interactions, in this paper we provide a formal foundation for Social XAI. We do so by proposing novel ontological accounts of the key terms used in Social XAI based on Basic Formal Ontology (BFO). Specifically, we provide novel ontological accounts for explanandum, explanans, understanding, explanation, explainer, explainee, and context. In doing so, we discuss multifaceted entities in Social XAI (having both continuant and occurrent facets; e.g., explanation) and the relationship between understanding and explanation. Additionally, we propose solutions to seemingly paradoxical views on some terms (e.g., social constructivist vs. individual constructivist perspective on explanandum). author: - first_name: Meisam full_name: Booshehri, Meisam id: '93424' last_name: Booshehri - first_name: Hendrik full_name: Buschmeier, Hendrik id: '76456' last_name: Buschmeier orcid: 0000-0002-9613-5713 - first_name: Philipp full_name: Cimiano, Philipp last_name: Cimiano citation: ama: 'Booshehri M, Buschmeier H, Cimiano P. A BFO-based ontological analysis of entities in Social XAI. In: Proceedings of the 15th International Conference on Formal Ontology in Information Systems. IOS Press; 2025:255–268. doi:10.3233/faia250498' apa: Booshehri, M., Buschmeier, H., & Cimiano, P. (2025). A BFO-based ontological analysis of entities in Social XAI. In Proceedings of the 15th International Conference on Formal Ontology in Information Systems (pp. 255–268). IOS Press. https://doi.org/10.3233/faia250498 bibtex: '@inbook{Booshehri_Buschmeier_Cimiano_2025, title={A BFO-based ontological analysis of entities in Social XAI}, DOI={10.3233/faia250498}, booktitle={Proceedings of the 15th International Conference on Formal Ontology in Information Systems}, publisher={IOS Press}, author={Booshehri, Meisam and Buschmeier, Hendrik and Cimiano, Philipp}, year={2025}, pages={255–268} }' chicago: Booshehri, Meisam, Hendrik Buschmeier, and Philipp Cimiano. “A BFO-Based Ontological Analysis of Entities in Social XAI.” In Proceedings of the 15th International Conference on Formal Ontology in Information Systems, 255–268. IOS Press, 2025. https://doi.org/10.3233/faia250498. ieee: M. Booshehri, H. Buschmeier, and P. Cimiano, “A BFO-based ontological analysis of entities in Social XAI,” in Proceedings of the 15th International Conference on Formal Ontology in Information Systems, IOS Press, 2025, pp. 255–268. mla: Booshehri, Meisam, et al. “A BFO-Based Ontological Analysis of Entities in Social XAI.” Proceedings of the 15th International Conference on Formal Ontology in Information Systems, IOS Press, 2025, pp. 255–268, doi:10.3233/faia250498. short: 'M. Booshehri, H. Buschmeier, P. Cimiano, in: Proceedings of the 15th International Conference on Formal Ontology in Information Systems, IOS Press, 2025, pp. 255–268.' conference: end_date: 2025-09-12 location: Catania, Italy name: 15th International Conference on Formal Ontology in Information Systems start_date: 2025-09-08 date_created: 2025-09-08T14:00:45Z date_updated: 2025-09-11T10:16:28Z department: - _id: '660' doi: 10.3233/faia250498 extern: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.3233/FAIA250498 oa: '1' page: 255–268 project: - _id: '118' name: 'TRR 318: Project Area INF' - _id: '112' name: 'TRR 318; TP A02: Verstehensprozess einer Erklärung beobachten und auswerten' publication: Proceedings of the 15th International Conference on Formal Ontology in Information Systems publication_identifier: isbn: - '9781643686172' issn: - 0922-6389 - 1879-8314 publication_status: published publisher: IOS Press quality_controlled: '1' status: public title: A BFO-based ontological analysis of entities in Social XAI type: book_chapter user_id: '76456' year: '2025' ... --- _id: '61234' abstract: - lang: eng text: "The ability to generate explanations that are understood by explainees is the\r\nquintessence of explainable artificial intelligence. Since understanding\r\ndepends on the explainee's background and needs, recent research focused on\r\nco-constructive explanation dialogues, where an explainer continuously monitors\r\nthe explainee's understanding and adapts their explanations dynamically. We\r\ninvestigate the ability of large language models (LLMs) to engage as explainers\r\nin co-constructive explanation dialogues. In particular, we present a user\r\nstudy in which explainees interact with an LLM in two settings, one of which\r\ninvolves the LLM being instructed to explain a topic co-constructively. We\r\nevaluate the explainees' understanding before and after the dialogue, as well\r\nas their perception of the LLMs' co-constructive behavior. Our results suggest\r\nthat LLMs show some co-constructive behaviors, such as asking verification\r\nquestions, that foster the explainees' engagement and can improve understanding\r\nof a topic. However, their ability to effectively monitor the current\r\nunderstanding and scaffold the explanations accordingly remains limited." author: - first_name: Leandra full_name: Fichtel, Leandra last_name: Fichtel - first_name: Maximilian full_name: Spliethöver, Maximilian id: '84035' last_name: Spliethöver orcid: 0000-0003-4364-1409 - first_name: Eyke full_name: Hüllermeier, Eyke id: '48129' last_name: Hüllermeier - first_name: Patricia full_name: Jimenez, Patricia id: '103339' last_name: Jimenez - first_name: Nils full_name: Klowait, Nils id: '98454' last_name: Klowait orcid: 0000-0002-7347-099X - first_name: Stefan full_name: Kopp, Stefan last_name: Kopp - first_name: Axel-Cyrille full_name: Ngonga Ngomo, Axel-Cyrille id: '65716' last_name: Ngonga Ngomo - first_name: Amelie full_name: Robrecht, Amelie id: '91982' last_name: Robrecht orcid: 0000-0001-5622-8248 - first_name: Ingrid full_name: Scharlau, Ingrid id: '451' last_name: Scharlau orcid: 0000-0003-2364-9489 - first_name: Lutz full_name: Terfloth, Lutz id: '37320' last_name: Terfloth - first_name: Anna-Lisa full_name: Vollmer, Anna-Lisa id: '86589' last_name: Vollmer - first_name: Henning full_name: Wachsmuth, Henning id: '3900' last_name: Wachsmuth citation: ama: 'Fichtel L, Spliethöver M, Hüllermeier E, et al. Investigating Co-Constructive Behavior of Large Language Models in  Explanation Dialogues. In: Proceedings of the 26th Annual Meeting of the Special Interest Group on Discourse and Dialogue. Association for Computational Linguistics.' apa: Fichtel, L., Spliethöver, M., Hüllermeier, E., Jimenez, P., Klowait, N., Kopp, S., Ngonga Ngomo, A.-C., Robrecht, A., Scharlau, I., Terfloth, L., Vollmer, A.-L., & Wachsmuth, H. (n.d.). Investigating Co-Constructive Behavior of Large Language Models in  Explanation Dialogues. Proceedings of the 26th Annual Meeting of the Special Interest Group on Discourse and Dialogue. Annual Meeting of the Special Interest Group on Discourse and Dialogue. bibtex: '@inproceedings{Fichtel_Spliethöver_Hüllermeier_Jimenez_Klowait_Kopp_Ngonga Ngomo_Robrecht_Scharlau_Terfloth_et al., place={Avignon, France}, title={Investigating Co-Constructive Behavior of Large Language Models in  Explanation Dialogues}, booktitle={Proceedings of the 26th Annual Meeting of the Special Interest Group on Discourse and Dialogue}, publisher={Association for Computational Linguistics}, author={Fichtel, Leandra and Spliethöver, Maximilian and Hüllermeier, Eyke and Jimenez, Patricia and Klowait, Nils and Kopp, Stefan and Ngonga Ngomo, Axel-Cyrille and Robrecht, Amelie and Scharlau, Ingrid and Terfloth, Lutz and et al.} }' chicago: 'Fichtel, Leandra, Maximilian Spliethöver, Eyke Hüllermeier, Patricia Jimenez, Nils Klowait, Stefan Kopp, Axel-Cyrille Ngonga Ngomo, et al. “Investigating Co-Constructive Behavior of Large Language Models in  Explanation Dialogues.” In Proceedings of the 26th Annual Meeting of the Special Interest Group on Discourse and Dialogue. Avignon, France: Association for Computational Linguistics, n.d.' ieee: L. Fichtel et al., “Investigating Co-Constructive Behavior of Large Language Models in  Explanation Dialogues,” presented at the Annual Meeting of the Special Interest Group on Discourse and Dialogue. mla: Fichtel, Leandra, et al. “Investigating Co-Constructive Behavior of Large Language Models in  Explanation Dialogues.” Proceedings of the 26th Annual Meeting of the Special Interest Group on Discourse and Dialogue, Association for Computational Linguistics. short: 'L. Fichtel, M. Spliethöver, E. Hüllermeier, P. Jimenez, N. Klowait, S. Kopp, A.-C. Ngonga Ngomo, A. Robrecht, I. Scharlau, L. Terfloth, A.-L. Vollmer, H. Wachsmuth, in: Proceedings of the 26th Annual Meeting of the Special Interest Group on Discourse and Dialogue, Association for Computational Linguistics, Avignon, France, n.d.' conference: name: Annual Meeting of the Special Interest Group on Discourse and Dialogue date_created: 2025-09-11T16:11:17Z date_updated: 2025-09-12T09:50:48Z department: - _id: '660' external_id: arxiv: - '2504.18483' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2504.18483 oa: '1' place: Avignon, France project: - _id: '118' name: 'TRR 318: Project Area INF' - _id: '121' name: 'TRR 318; TP B01: Ein dialogbasierter Ansatz zur Erklärung von Modellen des maschinellen Lernens' - _id: '127' name: 'TRR 318; TP C04: Metaphern als Werkzeug des Erklärens' - _id: '122' name: TRR 318 - Subproject B3 - _id: '119' name: TRR 318 - Project Area Ö - _id: '114' name: 'TRR 318; TP A04: Integration des technischen Modells in das Partnermodell bei der Erklärung von digitalen Artefakten' publication: Proceedings of the 26th Annual Meeting of the Special Interest Group on Discourse and Dialogue publication_status: accepted publisher: Association for Computational Linguistics related_material: link: - relation: software url: https://github.com/webis-de/sigdial25-co-constructive-llms - relation: research_data url: https://github.com/webis-de/sigdial25-co-constructive-llms-data status: public title: Investigating Co-Constructive Behavior of Large Language Models in Explanation Dialogues type: conference user_id: '84035' year: '2025' ... --- _id: '59856' abstract: - lang: eng text: Recent advances on instruction fine-tuning have led to the development of various prompting techniques for large language models, such as explicit reasoning steps. However, the success of techniques depends on various parameters, such as the task, language model, and context provided. Finding an effective prompt is, therefore, often a trial-and-error process. Most existing approaches to automatic prompting aim to optimize individual techniques instead of compositions of techniques and their dependence on the input. To fill this gap, we propose an adaptive prompting approach that predicts the optimal prompt composition ad-hoc for a given input. We apply our approach to social bias detection, a highly context-dependent task that requires semantic understanding. We evaluate it with three large language models on three datasets, comparing compositions to individual techniques and other baselines. The results underline the importance of finding an effective prompt composition. Our approach robustly ensures high detection performance, and is best in several settings. Moreover, first experiments on other tasks support its generalizability. author: - first_name: Maximilian full_name: Spliethöver, Maximilian id: '84035' last_name: Spliethöver orcid: 0000-0003-4364-1409 - first_name: Tim full_name: Knebler, Tim last_name: Knebler - first_name: Fabian full_name: Fumagalli, Fabian id: '93420' last_name: Fumagalli - first_name: Maximilian full_name: Muschalik, Maximilian last_name: Muschalik - first_name: Barbara full_name: Hammer, Barbara last_name: Hammer - first_name: Eyke full_name: Hüllermeier, Eyke id: '48129' last_name: Hüllermeier - first_name: Henning full_name: Wachsmuth, Henning id: '3900' last_name: Wachsmuth citation: ama: 'Spliethöver M, Knebler T, Fumagalli F, et al. Adaptive Prompting: Ad-hoc Prompt Composition for Social Bias Detection. In: Chiruzzo L, Ritter A, Wang L, eds. Proceedings of the 2025 Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers). Association for Computational Linguistics; 2025:2421–2449.' apa: 'Spliethöver, M., Knebler, T., Fumagalli, F., Muschalik, M., Hammer, B., Hüllermeier, E., & Wachsmuth, H. (2025). Adaptive Prompting: Ad-hoc Prompt Composition for Social Bias Detection. In L. Chiruzzo, A. Ritter, & L. Wang (Eds.), Proceedings of the 2025 Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers) (pp. 2421–2449). Association for Computational Linguistics.' bibtex: '@inproceedings{Spliethöver_Knebler_Fumagalli_Muschalik_Hammer_Hüllermeier_Wachsmuth_2025, place={Albuquerque, New Mexico}, title={Adaptive Prompting: Ad-hoc Prompt Composition for Social Bias Detection}, booktitle={Proceedings of the 2025 Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers)}, publisher={Association for Computational Linguistics}, author={Spliethöver, Maximilian and Knebler, Tim and Fumagalli, Fabian and Muschalik, Maximilian and Hammer, Barbara and Hüllermeier, Eyke and Wachsmuth, Henning}, editor={Chiruzzo, Luis and Ritter, Alan and Wang, Lu}, year={2025}, pages={2421–2449} }' chicago: 'Spliethöver, Maximilian, Tim Knebler, Fabian Fumagalli, Maximilian Muschalik, Barbara Hammer, Eyke Hüllermeier, and Henning Wachsmuth. “Adaptive Prompting: Ad-Hoc Prompt Composition for Social Bias Detection.” In Proceedings of the 2025 Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers), edited by Luis Chiruzzo, Alan Ritter, and Lu Wang, 2421–2449. Albuquerque, New Mexico: Association for Computational Linguistics, 2025.' ieee: 'M. Spliethöver et al., “Adaptive Prompting: Ad-hoc Prompt Composition for Social Bias Detection,” in Proceedings of the 2025 Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers), 2025, pp. 2421–2449.' mla: 'Spliethöver, Maximilian, et al. “Adaptive Prompting: Ad-Hoc Prompt Composition for Social Bias Detection.” Proceedings of the 2025 Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers), edited by Luis Chiruzzo et al., Association for Computational Linguistics, 2025, pp. 2421–2449.' short: 'M. Spliethöver, T. Knebler, F. Fumagalli, M. Muschalik, B. Hammer, E. Hüllermeier, H. Wachsmuth, in: L. Chiruzzo, A. Ritter, L. Wang (Eds.), Proceedings of the 2025 Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers), Association for Computational Linguistics, Albuquerque, New Mexico, 2025, pp. 2421–2449.' date_created: 2025-05-10T12:37:45Z date_updated: 2025-09-12T09:51:30Z department: - _id: '660' editor: - first_name: Luis full_name: Chiruzzo, Luis last_name: Chiruzzo - first_name: Alan full_name: Ritter, Alan last_name: Ritter - first_name: Lu full_name: Wang, Lu last_name: Wang language: - iso: eng main_file_link: - open_access: '1' url: https://aclanthology.org/2025.naacl-long.122/ oa: '1' page: 2421–2449 place: Albuquerque, New Mexico project: - _id: '118' name: 'TRR 318: Project Area INF' - _id: '126' name: TRR 318 - Subproject C3 publication: 'Proceedings of the 2025 Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers)' publication_identifier: isbn: - 979-8-89176-189-6 publication_status: published publisher: Association for Computational Linguistics related_material: link: - relation: software url: https://github.com/webis-de/naacl25-prompt-compositions status: public title: 'Adaptive Prompting: Ad-hoc Prompt Composition for Social Bias Detection' type: conference user_id: '84035' year: '2025' ... --- _id: '61178' citation: ama: Ilinykh N, Robrecht A, Kopp S, Buschmeier H, eds. SemDial 2025 – Bialogue. Proceedings of the 29th Workshop on the Semantics and Pragmatics of Dialogue.; 2025. apa: Ilinykh, N., Robrecht, A., Kopp, S., & Buschmeier, H. (Eds.). (2025). SemDial 2025 – Bialogue. Proceedings of the 29th Workshop on the Semantics and Pragmatics of Dialogue. bibtex: '@book{Ilinykh_Robrecht_Kopp_Buschmeier_2025, place={Bielefeld, Germany}, series={Proceedings (SemDial)}, title={SemDial 2025 – Bialogue. Proceedings of the 29th Workshop on the Semantics and Pragmatics of Dialogue}, year={2025}, collection={Proceedings (SemDial)} }' chicago: Ilinykh, Nikolai, Amelie Robrecht, Stefan Kopp, and Hendrik Buschmeier, eds. SemDial 2025 – Bialogue. Proceedings of the 29th Workshop on the Semantics and Pragmatics of Dialogue. Proceedings (SemDial). Bielefeld, Germany, 2025. ieee: N. Ilinykh, A. Robrecht, S. Kopp, and H. Buschmeier, Eds., SemDial 2025 – Bialogue. Proceedings of the 29th Workshop on the Semantics and Pragmatics of Dialogue. Bielefeld, Germany, 2025. mla: Ilinykh, Nikolai, et al., editors. SemDial 2025 – Bialogue. Proceedings of the 29th Workshop on the Semantics and Pragmatics of Dialogue. 2025. short: N. Ilinykh, A. Robrecht, S. Kopp, H. Buschmeier, eds., SemDial 2025 – Bialogue. Proceedings of the 29th Workshop on the Semantics and Pragmatics of Dialogue, Bielefeld, Germany, 2025. conference: end_date: 2025-09-05 location: Bielefeld, Germany name: 29th Workshop on the Semantics and Pragmatics of Dialogue start_date: 2025-09-03 date_created: 2025-09-11T07:16:10Z date_updated: 2025-09-12T16:56:35Z department: - _id: '660' editor: - first_name: Nikolai full_name: Ilinykh, Nikolai last_name: Ilinykh - first_name: Amelie full_name: Robrecht, Amelie id: '91982' last_name: Robrecht orcid: 0000-0001-5622-8248 - first_name: Stefan full_name: Kopp, Stefan last_name: Kopp - first_name: Hendrik full_name: Buschmeier, Hendrik id: '76456' last_name: Buschmeier orcid: 0000-0002-9613-5713 extern: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://purl.org/semdial/2025/proceedings oa: '1' page: 271+viii place: Bielefeld, Germany project: - _id: '112' name: 'TRR 318; TP A02: Verstehensprozess einer Erklärung beobachten und auswerten' - _id: '111' name: 'TRR 318; TP A01: Adaptives Erklären' publication_identifier: issn: - 2308-2275 publication_status: published quality_controlled: '1' series_title: Proceedings (SemDial) status: public title: SemDial 2025 – Bialogue. Proceedings of the 29th Workshop on the Semantics and Pragmatics of Dialogue type: book_editor user_id: '76456' year: '2025' ...