[{"status":"public","type":"conference","publication":"2025 IEEE International Conference on Recent Advances in Systems Science and Engineering (RASSE)","language":[{"iso":"eng"}],"user_id":"15782","department":[{"_id":"563"}],"_id":"64220","citation":{"chicago":"Disselkamp, Jan-Philipp, Tobias Seidenberg, Jonas Lick, and Roman Dumitrescu. “24 Reasons for the Failure of Integrative and Integrated Product and Production System Development Methods.” In <i>2025 IEEE International Conference on Recent Advances in Systems Science and Engineering (RASSE)</i>. IEEE, 2025. <a href=\"https://doi.org/10.1109/rasse64831.2025.11315397\">https://doi.org/10.1109/rasse64831.2025.11315397</a>.","ieee":"J.-P. Disselkamp, T. Seidenberg, J. Lick, and R. Dumitrescu, “24 Reasons for the Failure of Integrative and Integrated Product and Production System Development Methods,” 2025, doi: <a href=\"https://doi.org/10.1109/rasse64831.2025.11315397\">10.1109/rasse64831.2025.11315397</a>.","short":"J.-P. Disselkamp, T. Seidenberg, J. Lick, R. Dumitrescu, in: 2025 IEEE International Conference on Recent Advances in Systems Science and Engineering (RASSE), IEEE, 2025.","bibtex":"@inproceedings{Disselkamp_Seidenberg_Lick_Dumitrescu_2025, title={24 Reasons for the Failure of Integrative and Integrated Product and Production System Development Methods}, DOI={<a href=\"https://doi.org/10.1109/rasse64831.2025.11315397\">10.1109/rasse64831.2025.11315397</a>}, booktitle={2025 IEEE International Conference on Recent Advances in Systems Science and Engineering (RASSE)}, publisher={IEEE}, author={Disselkamp, Jan-Philipp and Seidenberg, Tobias and Lick, Jonas and Dumitrescu, Roman}, year={2025} }","mla":"Disselkamp, Jan-Philipp, et al. “24 Reasons for the Failure of Integrative and Integrated Product and Production System Development Methods.” <i>2025 IEEE International Conference on Recent Advances in Systems Science and Engineering (RASSE)</i>, IEEE, 2025, doi:<a href=\"https://doi.org/10.1109/rasse64831.2025.11315397\">10.1109/rasse64831.2025.11315397</a>.","apa":"Disselkamp, J.-P., Seidenberg, T., Lick, J., &#38; Dumitrescu, R. (2025). 24 Reasons for the Failure of Integrative and Integrated Product and Production System Development Methods. <i>2025 IEEE International Conference on Recent Advances in Systems Science and Engineering (RASSE)</i>. <a href=\"https://doi.org/10.1109/rasse64831.2025.11315397\">https://doi.org/10.1109/rasse64831.2025.11315397</a>","ama":"Disselkamp J-P, Seidenberg T, Lick J, Dumitrescu R. 24 Reasons for the Failure of Integrative and Integrated Product and Production System Development Methods. In: <i>2025 IEEE International Conference on Recent Advances in Systems Science and Engineering (RASSE)</i>. IEEE; 2025. doi:<a href=\"https://doi.org/10.1109/rasse64831.2025.11315397\">10.1109/rasse64831.2025.11315397</a>"},"year":"2025","publication_status":"published","doi":"10.1109/rasse64831.2025.11315397","title":"24 Reasons for the Failure of Integrative and Integrated Product and Production System Development Methods","date_created":"2026-02-19T08:54:26Z","author":[{"first_name":"Jan-Philipp","last_name":"Disselkamp","full_name":"Disselkamp, Jan-Philipp"},{"last_name":"Seidenberg","full_name":"Seidenberg, Tobias","first_name":"Tobias"},{"first_name":"Jonas","last_name":"Lick","full_name":"Lick, Jonas"},{"id":"16190","full_name":"Dumitrescu, Roman","last_name":"Dumitrescu","first_name":"Roman"}],"publisher":"IEEE","date_updated":"2026-02-19T09:00:40Z"},{"page":"1-9","citation":{"chicago":"Ködding, Patrick, Christian Koldewey, and Roman Dumitrescu. “Tailoring Scenario Projects with Method and Tool Building Blocks.” <i>IEEE Engineering Management Review</i>, 2025, 1–9. <a href=\"https://doi.org/10.1109/emr.2025.3646110\">https://doi.org/10.1109/emr.2025.3646110</a>.","ieee":"P. Ködding, C. Koldewey, and R. Dumitrescu, “Tailoring scenario projects with method and tool building blocks,” <i>IEEE Engineering Management Review</i>, pp. 1–9, 2025, doi: <a href=\"https://doi.org/10.1109/emr.2025.3646110\">10.1109/emr.2025.3646110</a>.","ama":"Ködding P, Koldewey C, Dumitrescu R. Tailoring scenario projects with method and tool building blocks. <i>IEEE Engineering Management Review</i>. Published online 2025:1-9. doi:<a href=\"https://doi.org/10.1109/emr.2025.3646110\">10.1109/emr.2025.3646110</a>","apa":"Ködding, P., Koldewey, C., &#38; Dumitrescu, R. (2025). Tailoring scenario projects with method and tool building blocks. <i>IEEE Engineering Management Review</i>, 1–9. <a href=\"https://doi.org/10.1109/emr.2025.3646110\">https://doi.org/10.1109/emr.2025.3646110</a>","bibtex":"@article{Ködding_Koldewey_Dumitrescu_2025, title={Tailoring scenario projects with method and tool building blocks}, DOI={<a href=\"https://doi.org/10.1109/emr.2025.3646110\">10.1109/emr.2025.3646110</a>}, journal={IEEE Engineering Management Review}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Ködding, Patrick and Koldewey, Christian and Dumitrescu, Roman}, year={2025}, pages={1–9} }","short":"P. Ködding, C. Koldewey, R. Dumitrescu, IEEE Engineering Management Review (2025) 1–9.","mla":"Ködding, Patrick, et al. “Tailoring Scenario Projects with Method and Tool Building Blocks.” <i>IEEE Engineering Management Review</i>, Institute of Electrical and Electronics Engineers (IEEE), 2025, pp. 1–9, doi:<a href=\"https://doi.org/10.1109/emr.2025.3646110\">10.1109/emr.2025.3646110</a>."},"year":"2025","publication_identifier":{"issn":["0360-8581","1937-4178"]},"publication_status":"published","doi":"10.1109/emr.2025.3646110","title":"Tailoring scenario projects with method and tool building blocks","author":[{"last_name":"Ködding","full_name":"Ködding, Patrick","first_name":"Patrick"},{"id":"43136","full_name":"Koldewey, Christian","orcid":"https://orcid.org/0000-0001-7992-6399","last_name":"Koldewey","first_name":"Christian"},{"first_name":"Roman","last_name":"Dumitrescu","full_name":"Dumitrescu, Roman","id":"16190"}],"date_created":"2026-02-19T08:57:25Z","publisher":"Institute of Electrical and Electronics Engineers (IEEE)","date_updated":"2026-02-19T09:00:33Z","status":"public","publication":"IEEE Engineering Management Review","type":"journal_article","language":[{"iso":"eng"}],"department":[{"_id":"563"}],"user_id":"15782","_id":"64222"},{"page":"439-448","intvolume":"         5","citation":{"ieee":"F. Hanke, I. Mpidi Bita, O. von Heißen, J. Weller, A. Hovemann, and R. Dumitrescu, “AI-augmented systems engineering: conceptual application of retrieval-augmented generation for model-based systems engineering graph,” in <i>Proceedings of the Design Society</i>, 2025, vol. 5, pp. 439–448, doi: <a href=\"https://doi.org/10.1017/pds.2025.10058\">10.1017/pds.2025.10058</a>.","chicago":"Hanke, Fabian, Isaac  Mpidi Bita, Oliver  von Heißen, Julian Weller, Aschot Hovemann, and Roman Dumitrescu. “AI-Augmented Systems Engineering: Conceptual Application of Retrieval-Augmented Generation for Model-Based Systems Engineering Graph.” In <i>Proceedings of the Design Society</i>, 5:439–48. Cambridge University Press (CUP), 2025. <a href=\"https://doi.org/10.1017/pds.2025.10058\">https://doi.org/10.1017/pds.2025.10058</a>.","ama":"Hanke F, Mpidi Bita I, von Heißen O, Weller J, Hovemann A, Dumitrescu R. AI-augmented systems engineering: conceptual application of retrieval-augmented generation for model-based systems engineering graph. In: <i>Proceedings of the Design Society</i>. Vol 5. Cambridge University Press (CUP); 2025:439-448. doi:<a href=\"https://doi.org/10.1017/pds.2025.10058\">10.1017/pds.2025.10058</a>","apa":"Hanke, F., Mpidi Bita, I., von Heißen, O., Weller, J., Hovemann, A., &#38; Dumitrescu, R. (2025). AI-augmented systems engineering: conceptual application of retrieval-augmented generation for model-based systems engineering graph. <i>Proceedings of the Design Society</i>, <i>5</i>, 439–448. <a href=\"https://doi.org/10.1017/pds.2025.10058\">https://doi.org/10.1017/pds.2025.10058</a>","bibtex":"@inproceedings{Hanke_Mpidi Bita_von Heißen_Weller_Hovemann_Dumitrescu_2025, title={AI-augmented systems engineering: conceptual application of retrieval-augmented generation for model-based systems engineering graph}, volume={5}, DOI={<a href=\"https://doi.org/10.1017/pds.2025.10058\">10.1017/pds.2025.10058</a>}, booktitle={Proceedings of the Design Society}, publisher={Cambridge University Press (CUP)}, author={Hanke, Fabian and Mpidi Bita, Isaac  and von Heißen, Oliver  and Weller, Julian and Hovemann, Aschot and Dumitrescu, Roman}, year={2025}, pages={439–448} }","short":"F. Hanke, I. Mpidi Bita, O. von Heißen, J. Weller, A. Hovemann, R. Dumitrescu, in: Proceedings of the Design Society, Cambridge University Press (CUP), 2025, pp. 439–448.","mla":"Hanke, Fabian, et al. “AI-Augmented Systems Engineering: Conceptual Application of Retrieval-Augmented Generation for Model-Based Systems Engineering Graph.” <i>Proceedings of the Design Society</i>, vol. 5, Cambridge University Press (CUP), 2025, pp. 439–48, doi:<a href=\"https://doi.org/10.1017/pds.2025.10058\">10.1017/pds.2025.10058</a>."},"year":"2025","publication_identifier":{"issn":["2732-527X"]},"publication_status":"published","doi":"10.1017/pds.2025.10058","title":"AI-augmented systems engineering: conceptual application of retrieval-augmented generation for model-based systems engineering graph","volume":5,"date_created":"2026-02-19T09:13:22Z","author":[{"last_name":"Hanke","full_name":"Hanke, Fabian","first_name":"Fabian"},{"first_name":"Isaac ","full_name":"Mpidi Bita, Isaac ","last_name":"Mpidi Bita"},{"first_name":"Oliver ","full_name":"von Heißen, Oliver ","last_name":"von Heißen"},{"first_name":"Julian","full_name":"Weller, Julian","last_name":"Weller"},{"last_name":"Hovemann","full_name":"Hovemann, Aschot","first_name":"Aschot"},{"last_name":"Dumitrescu","id":"16190","full_name":"Dumitrescu, Roman","first_name":"Roman"}],"date_updated":"2026-02-19T09:15:00Z","publisher":"Cambridge University Press (CUP)","status":"public","abstract":[{"lang":"eng","text":"<jats:title>ABSTRACT:</jats:title><jats:p>This paper presents the MBSE-Graph-RAG framework to address key challenges in Model-Based Systems Engineering (MBSE). Traditional MBSE tools suffer from usability barriers, limited accessibility, and integration challenges. By combining knowledge graphs with Retrieval-Augmented Generation (RAG), the proposed framework enables AI-Augmented engineering through natural language interactions and automated system architecture generation. A systematic literature review establishes a solid research foundation, identifying gaps in AI-assisted MBSE. Key contributions include a structured MBSE-Graph interface, improved usability via Large Language Models (LLMs), and automated graph construction aligned with SysML. A proof-of-concept demonstrates the potential of this approach to enhance MBSE by reducing complexity, improving data accessibility, and supporting engineering collaboration.</jats:p>"}],"publication":"Proceedings of the Design Society","type":"conference","language":[{"iso":"eng"}],"department":[{"_id":"563"}],"user_id":"15782","_id":"64229"},{"issue":"21","year":"2025","publisher":"MDPI AG","date_created":"2026-02-19T10:08:21Z","title":"Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE)","publication":"Electronics","abstract":[{"lang":"eng","text":"<jats:p>This paper presents a comprehensive design framework for Enterprise Architecture aimed at facilitating decision-driven analytics in smart factories. The motivation behind this research lies in challenges faced by manufacturing companies, such as skilled labor shortages and increasing global competition, alongside the imperative for sustainable production. This journal provides a novel approach for designing and documenting prescriptive analytics use cases in manufacturing environments. The framework addresses the need for effective integration of advanced data analytics and prescriptive analytics solutions within existing production environments, thereby enhancing operational efficiency and decision-making processes. A Design Science Research approach is used to iteratively derive a framework based on stakeholder needs and activities along the prescriptive analytics use case development cycle. The resulting framework is demonstrated and evaluated in an IoT Factory setup in a research facility. From a practical perspective, the framework supports manufacturing companies in systematically designing prescriptive analytics use cases. From a research perspective, it contributes to the body of knowledge on Enterprise Architecture Management (EAM) by operationalizing the design of prescriptive analytics use cases in manufacturing contexts. The main contributions of this study include the development of a framework that supports the planning, design, and integration of prescriptive analytics use cases. This framework fosters interdisciplinary collaboration and aids in managing the complexity of data-driven projects.</jats:p>"}],"language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["2079-9292"]},"citation":{"ieee":"J. Weller and R. Dumitrescu, “Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE),” <i>Electronics</i>, vol. 14, no. 21, Art. no. 4271, 2025, doi: <a href=\"https://doi.org/10.3390/electronics14214271\">10.3390/electronics14214271</a>.","chicago":"Weller, Julian, and Roman Dumitrescu. “Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE).” <i>Electronics</i> 14, no. 21 (2025). <a href=\"https://doi.org/10.3390/electronics14214271\">https://doi.org/10.3390/electronics14214271</a>.","apa":"Weller, J., &#38; Dumitrescu, R. (2025). Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE). <i>Electronics</i>, <i>14</i>(21), Article 4271. <a href=\"https://doi.org/10.3390/electronics14214271\">https://doi.org/10.3390/electronics14214271</a>","ama":"Weller J, Dumitrescu R. Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE). <i>Electronics</i>. 2025;14(21). doi:<a href=\"https://doi.org/10.3390/electronics14214271\">10.3390/electronics14214271</a>","mla":"Weller, Julian, and Roman Dumitrescu. “Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE).” <i>Electronics</i>, vol. 14, no. 21, 4271, MDPI AG, 2025, doi:<a href=\"https://doi.org/10.3390/electronics14214271\">10.3390/electronics14214271</a>.","bibtex":"@article{Weller_Dumitrescu_2025, title={Decision-Driven Analytics in Smart Factories: Enterprise Architecture Framework for Use Case Specification and Engineering (FUSE)}, volume={14}, DOI={<a href=\"https://doi.org/10.3390/electronics14214271\">10.3390/electronics14214271</a>}, number={214271}, journal={Electronics}, publisher={MDPI AG}, author={Weller, Julian and Dumitrescu, Roman}, year={2025} }","short":"J. Weller, R. Dumitrescu, Electronics 14 (2025)."},"intvolume":"        14","date_updated":"2026-02-19T10:08:54Z","author":[{"first_name":"Julian","full_name":"Weller, Julian","last_name":"Weller"},{"first_name":"Roman","id":"16190","full_name":"Dumitrescu, Roman","last_name":"Dumitrescu"}],"volume":14,"doi":"10.3390/electronics14214271","type":"journal_article","status":"public","_id":"64253","user_id":"15782","department":[{"_id":"563"}],"article_number":"4271"},{"publication":"Proceedings of the Design Society","type":"conference","abstract":[{"text":"<jats:title>ABSTRACT:</jats:title><jats:p>The increasing complexity of modern product and production system development, driven by dynamic market demands, supply chain disruptions and economic pressures, poses significant challenges for companies. Existing methodologies often fall short due to their domain-specific focus, inconsistent terminology and lack of integration. To address these challenges, this paper presents a taxonomy for integrative product and production system development. The taxonomy systematically structures key elements, dependencies and processes to improve collaboration, decision-making and communication within organisations. Developed iteratively the taxonomy identifies ten core artefacts. It enables organisations to better plan improvements, synchronise development processes, and select appropriate methods and tools.</jats:p>","lang":"eng"}],"status":"public","_id":"64252","department":[{"_id":"563"}],"user_id":"15782","language":[{"iso":"eng"}],"publication_identifier":{"issn":["2732-527X"]},"publication_status":"published","year":"2025","page":"2121-2130","intvolume":"         5","citation":{"apa":"Disselkamp, J.-P., Seidenberg, T., Westphal, S., Lick, J., Ptock, L., Wyrwich, F., Hovemann, A., &#38; Dumitrescu, R. (2025). Integrative and Integrated product and production system development: a taxonomy for managing dependencies and processes. <i>Proceedings of the Design Society</i>, <i>5</i>, 2121–2130. <a href=\"https://doi.org/10.1017/pds.2025.10226\">https://doi.org/10.1017/pds.2025.10226</a>","bibtex":"@inproceedings{Disselkamp_Seidenberg_Westphal_Lick_Ptock_Wyrwich_Hovemann_Dumitrescu_2025, title={Integrative and Integrated product and production system development: a taxonomy for managing dependencies and processes}, volume={5}, DOI={<a href=\"https://doi.org/10.1017/pds.2025.10226\">10.1017/pds.2025.10226</a>}, booktitle={Proceedings of the Design Society}, publisher={Cambridge University Press (CUP)}, author={Disselkamp, Jan-Philipp and Seidenberg, Tobias and Westphal, Svenja and Lick, Jonas and Ptock, Lukas and Wyrwich, Fabian and Hovemann, Aschot and Dumitrescu, Roman}, year={2025}, pages={2121–2130} }","mla":"Disselkamp, Jan-Philipp, et al. “Integrative and Integrated Product and Production System Development: A Taxonomy for Managing Dependencies and Processes.” <i>Proceedings of the Design Society</i>, vol. 5, Cambridge University Press (CUP), 2025, pp. 2121–30, doi:<a href=\"https://doi.org/10.1017/pds.2025.10226\">10.1017/pds.2025.10226</a>.","short":"J.-P. Disselkamp, T. Seidenberg, S. Westphal, J. Lick, L. Ptock, F. Wyrwich, A. Hovemann, R. Dumitrescu, in: Proceedings of the Design Society, Cambridge University Press (CUP), 2025, pp. 2121–2130.","ama":"Disselkamp J-P, Seidenberg T, Westphal S, et al. Integrative and Integrated product and production system development: a taxonomy for managing dependencies and processes. In: <i>Proceedings of the Design Society</i>. Vol 5. Cambridge University Press (CUP); 2025:2121-2130. doi:<a href=\"https://doi.org/10.1017/pds.2025.10226\">10.1017/pds.2025.10226</a>","ieee":"J.-P. Disselkamp <i>et al.</i>, “Integrative and Integrated product and production system development: a taxonomy for managing dependencies and processes,” in <i>Proceedings of the Design Society</i>, 2025, vol. 5, pp. 2121–2130, doi: <a href=\"https://doi.org/10.1017/pds.2025.10226\">10.1017/pds.2025.10226</a>.","chicago":"Disselkamp, Jan-Philipp, Tobias Seidenberg, Svenja Westphal, Jonas Lick, Lukas Ptock, Fabian Wyrwich, Aschot Hovemann, and Roman Dumitrescu. “Integrative and Integrated Product and Production System Development: A Taxonomy for Managing Dependencies and Processes.” In <i>Proceedings of the Design Society</i>, 5:2121–30. Cambridge University Press (CUP), 2025. <a href=\"https://doi.org/10.1017/pds.2025.10226\">https://doi.org/10.1017/pds.2025.10226</a>."},"publisher":"Cambridge University Press (CUP)","date_updated":"2026-02-19T10:04:32Z","volume":5,"date_created":"2026-02-19T10:03:40Z","author":[{"full_name":"Disselkamp, Jan-Philipp","last_name":"Disselkamp","first_name":"Jan-Philipp"},{"first_name":"Tobias","last_name":"Seidenberg","full_name":"Seidenberg, Tobias"},{"last_name":"Westphal","full_name":"Westphal, Svenja","first_name":"Svenja"},{"first_name":"Jonas","last_name":"Lick","full_name":"Lick, Jonas"},{"first_name":"Lukas","full_name":"Ptock, Lukas","last_name":"Ptock"},{"first_name":"Fabian","last_name":"Wyrwich","full_name":"Wyrwich, Fabian"},{"first_name":"Aschot","last_name":"Hovemann","full_name":"Hovemann, Aschot"},{"id":"16190","full_name":"Dumitrescu, Roman","last_name":"Dumitrescu","first_name":"Roman"}],"title":"Integrative and Integrated product and production system development: a taxonomy for managing dependencies and processes","doi":"10.1017/pds.2025.10226"},{"year":"2025","citation":{"apa":"Lick, J., Kattenstroth, F., Trienens, M., Disselkamp, J.-P., Kühn, A., &#38; Dumitrescu, R. (2025). Guidance on a Digital Factory Twin: Proposal for a Reference Architecture. <i>2024 IEEE International Conference on Technology Management, Operations and Decisions (ICTMOD)</i>. <a href=\"https://doi.org/10.1109/ictmod63116.2024.10878221\">https://doi.org/10.1109/ictmod63116.2024.10878221</a>","bibtex":"@inproceedings{Lick_Kattenstroth_Trienens_Disselkamp_Kühn_Dumitrescu_2025, title={Guidance on a Digital Factory Twin: Proposal for a Reference Architecture}, DOI={<a href=\"https://doi.org/10.1109/ictmod63116.2024.10878221\">10.1109/ictmod63116.2024.10878221</a>}, booktitle={2024 IEEE International Conference on Technology Management, Operations and Decisions (ICTMOD)}, publisher={IEEE}, author={Lick, Jonas and Kattenstroth, Fiona and Trienens, Malte and Disselkamp, Jan-Philipp and Kühn, Arno and Dumitrescu, Roman}, year={2025} }","short":"J. Lick, F. Kattenstroth, M. Trienens, J.-P. Disselkamp, A. Kühn, R. Dumitrescu, in: 2024 IEEE International Conference on Technology Management, Operations and Decisions (ICTMOD), IEEE, 2025.","mla":"Lick, Jonas, et al. “Guidance on a Digital Factory Twin: Proposal for a Reference Architecture.” <i>2024 IEEE International Conference on Technology Management, Operations and Decisions (ICTMOD)</i>, IEEE, 2025, doi:<a href=\"https://doi.org/10.1109/ictmod63116.2024.10878221\">10.1109/ictmod63116.2024.10878221</a>.","ieee":"J. Lick, F. Kattenstroth, M. Trienens, J.-P. Disselkamp, A. Kühn, and R. Dumitrescu, “Guidance on a Digital Factory Twin: Proposal for a Reference Architecture,” 2025, doi: <a href=\"https://doi.org/10.1109/ictmod63116.2024.10878221\">10.1109/ictmod63116.2024.10878221</a>.","chicago":"Lick, Jonas, Fiona Kattenstroth, Malte Trienens, Jan-Philipp Disselkamp, Arno Kühn, and Roman Dumitrescu. “Guidance on a Digital Factory Twin: Proposal for a Reference Architecture.” In <i>2024 IEEE International Conference on Technology Management, Operations and Decisions (ICTMOD)</i>. IEEE, 2025. <a href=\"https://doi.org/10.1109/ictmod63116.2024.10878221\">https://doi.org/10.1109/ictmod63116.2024.10878221</a>.","ama":"Lick J, Kattenstroth F, Trienens M, Disselkamp J-P, Kühn A, Dumitrescu R. Guidance on a Digital Factory Twin: Proposal for a Reference Architecture. In: <i>2024 IEEE International Conference on Technology Management, Operations and Decisions (ICTMOD)</i>. IEEE; 2025. doi:<a href=\"https://doi.org/10.1109/ictmod63116.2024.10878221\">10.1109/ictmod63116.2024.10878221</a>"},"publication_status":"published","title":"Guidance on a Digital Factory Twin: Proposal for a Reference Architecture","doi":"10.1109/ictmod63116.2024.10878221","publisher":"IEEE","date_updated":"2026-02-19T10:18:11Z","date_created":"2025-04-11T13:01:18Z","author":[{"last_name":"Lick","full_name":"Lick, Jonas","first_name":"Jonas"},{"first_name":"Fiona","full_name":"Kattenstroth, Fiona","last_name":"Kattenstroth"},{"first_name":"Malte","last_name":"Trienens","full_name":"Trienens, Malte"},{"first_name":"Jan-Philipp","full_name":"Disselkamp, Jan-Philipp","last_name":"Disselkamp"},{"first_name":"Arno","last_name":"Kühn","full_name":"Kühn, Arno"},{"first_name":"Roman","last_name":"Dumitrescu","id":"16190","full_name":"Dumitrescu, Roman"}],"status":"public","type":"conference","publication":"2024 IEEE International Conference on Technology Management, Operations and Decisions (ICTMOD)","language":[{"iso":"eng"}],"_id":"59517","user_id":"15782","department":[{"_id":"563"}]},{"citation":{"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.” <i>ZbMATH Open, Zbl. 08058231</i>, 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,” <i>zbMATH Open, Zbl. 08058231</i>. 2025.","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. <i>zbMATH Open, Zbl 08058231</i>. Published online 2025.","short":"V. Peckhaus, ZbMATH Open, Zbl. 08058231 (2025).","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} }","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.” <i>ZbMATH Open, Zbl. 08058231</i>, 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 <i>zbMATH Open, Zbl. 08058231</i>."},"year":"2025","date_created":"2025-09-03T13:56:07Z","author":[{"first_name":"Volker","id":"391","full_name":"Peckhaus, Volker","last_name":"Peckhaus"}],"oa":"1","date_updated":"2026-02-19T10:10:27Z","main_file_link":[{"url":"https://zbmath.org/8058231","open_access":"1"}],"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","publication":"zbMATH Open, Zbl. 08058231","status":"public","user_id":"14972","department":[{"_id":"520"}],"_id":"61121","language":[{"iso":"eng"}]},{"year":"2025","citation":{"chicago":"Dumitrescu, Roman, Oliver Riedel, Michael Henke, Joachim Metternich, Steffen Ihlenfeldt, and Christian Koldewey. “Gaia-X in Industriellen Wertschöpfungsnetzwerken – Erkenntnisse Aus Der Förderlinie InGAIA-X.” In <i>Gaia-X in Industriellen Wertschöpfungsnetzwerken – Erkenntnisse Aus Der Förderlinie InGAIA-X</i>. VDI Verlag, 2025. <a href=\"https://doi.org/10.51202/9783186204165-i\">https://doi.org/10.51202/9783186204165-i</a>.","ieee":"R. Dumitrescu, O. Riedel, M. Henke, J. Metternich, S. Ihlenfeldt, and C. Koldewey, “Gaia-X in industriellen Wertschöpfungsnetzwerken – Erkenntnisse aus der Förderlinie InGAIA-X,” in <i>Gaia-X in industriellen Wertschöpfungsnetzwerken – Erkenntnisse aus der Förderlinie InGAIA-X</i>, VDI Verlag, 2025.","ama":"Dumitrescu R, Riedel O, Henke M, Metternich J, Ihlenfeldt S, Koldewey C. Gaia-X in industriellen Wertschöpfungsnetzwerken – Erkenntnisse aus der Förderlinie InGAIA-X. In: <i>Gaia-X in Industriellen Wertschöpfungsnetzwerken – Erkenntnisse Aus Der Förderlinie InGAIA-X</i>. VDI Verlag; 2025. doi:<a href=\"https://doi.org/10.51202/9783186204165-i\">10.51202/9783186204165-i</a>","bibtex":"@inbook{Dumitrescu_Riedel_Henke_Metternich_Ihlenfeldt_Koldewey_2025, title={Gaia-X in industriellen Wertschöpfungsnetzwerken – Erkenntnisse aus der Förderlinie InGAIA-X}, DOI={<a href=\"https://doi.org/10.51202/9783186204165-i\">10.51202/9783186204165-i</a>}, booktitle={Gaia-X in industriellen Wertschöpfungsnetzwerken – Erkenntnisse aus der Förderlinie InGAIA-X}, publisher={VDI Verlag}, author={Dumitrescu, Roman and Riedel, Oliver and Henke, Michael and Metternich, Joachim and Ihlenfeldt, Steffen and Koldewey, Christian}, year={2025} }","mla":"Dumitrescu, Roman, et al. “Gaia-X in Industriellen Wertschöpfungsnetzwerken – Erkenntnisse Aus Der Förderlinie InGAIA-X.” <i>Gaia-X in Industriellen Wertschöpfungsnetzwerken – Erkenntnisse Aus Der Förderlinie InGAIA-X</i>, VDI Verlag, 2025, doi:<a href=\"https://doi.org/10.51202/9783186204165-i\">10.51202/9783186204165-i</a>.","short":"R. Dumitrescu, O. Riedel, M. Henke, J. Metternich, S. Ihlenfeldt, C. Koldewey, in: Gaia-X in Industriellen Wertschöpfungsnetzwerken – Erkenntnisse Aus Der Förderlinie InGAIA-X, VDI Verlag, 2025.","apa":"Dumitrescu, R., Riedel, O., Henke, M., Metternich, J., Ihlenfeldt, S., &#38; Koldewey, C. (2025). Gaia-X in industriellen Wertschöpfungsnetzwerken – Erkenntnisse aus der Förderlinie InGAIA-X. In <i>Gaia-X in industriellen Wertschöpfungsnetzwerken – Erkenntnisse aus der Förderlinie InGAIA-X</i>. VDI Verlag. <a href=\"https://doi.org/10.51202/9783186204165-i\">https://doi.org/10.51202/9783186204165-i</a>"},"publication_identifier":{"isbn":["9783186204165"]},"publication_status":"published","title":"Gaia-X in industriellen Wertschöpfungsnetzwerken – Erkenntnisse aus der Förderlinie InGAIA-X","doi":"10.51202/9783186204165-i","date_updated":"2026-02-19T10:38:04Z","publisher":"VDI Verlag","date_created":"2026-02-19T10:16:30Z","author":[{"first_name":"Roman","last_name":"Dumitrescu","id":"16190","full_name":"Dumitrescu, Roman"},{"full_name":"Riedel, Oliver","last_name":"Riedel","first_name":"Oliver"},{"full_name":"Henke, Michael","last_name":"Henke","first_name":"Michael"},{"first_name":"Joachim","full_name":"Metternich, Joachim","last_name":"Metternich"},{"full_name":"Ihlenfeldt, Steffen","last_name":"Ihlenfeldt","first_name":"Steffen"},{"last_name":"Koldewey","orcid":"https://orcid.org/0000-0001-7992-6399","id":"43136","full_name":"Koldewey, Christian","first_name":"Christian"}],"status":"public","publication":"Gaia-X in industriellen Wertschöpfungsnetzwerken – Erkenntnisse aus der Förderlinie InGAIA-X","type":"book_chapter","language":[{"iso":"eng"}],"_id":"64254","department":[{"_id":"563"}],"user_id":"15782"},{"language":[{"iso":"ger"}],"_id":"64256","user_id":"15782","department":[{"_id":"563"}],"status":"public","type":"journal_article","publication":"Nachhaltige Industrie","title":"Mit digitalen Hebeln zur Kreislaufwirtschaft","doi":"10.1007/s43462-025-1406-x","date_updated":"2026-02-19T10:25:05Z","publisher":"Springer Science and Business Media LLC","author":[{"first_name":"Anja","full_name":"Rasor, Anja","id":"34415","last_name":"Rasor"},{"first_name":"Christian","last_name":"Koldewey","orcid":"https://orcid.org/0000-0001-7992-6399","full_name":"Koldewey, Christian","id":"43136"},{"id":"16190","full_name":"Dumitrescu, Roman","last_name":"Dumitrescu","first_name":"Roman"}],"date_created":"2026-02-19T10:23:05Z","volume":6,"year":"2025","citation":{"apa":"Rasor, A., Koldewey, C., &#38; Dumitrescu, R. (2025). Mit digitalen Hebeln zur Kreislaufwirtschaft. <i>Nachhaltige Industrie</i>, <i>6</i>(2), 40–43. <a href=\"https://doi.org/10.1007/s43462-025-1406-x\">https://doi.org/10.1007/s43462-025-1406-x</a>","mla":"Rasor, Anja, et al. “Mit digitalen Hebeln zur Kreislaufwirtschaft.” <i>Nachhaltige Industrie</i>, vol. 6, no. 2, Springer Science and Business Media LLC, 2025, pp. 40–43, doi:<a href=\"https://doi.org/10.1007/s43462-025-1406-x\">10.1007/s43462-025-1406-x</a>.","short":"A. Rasor, C. Koldewey, R. Dumitrescu, Nachhaltige Industrie 6 (2025) 40–43.","bibtex":"@article{Rasor_Koldewey_Dumitrescu_2025, title={Mit digitalen Hebeln zur Kreislaufwirtschaft}, volume={6}, DOI={<a href=\"https://doi.org/10.1007/s43462-025-1406-x\">10.1007/s43462-025-1406-x</a>}, number={2}, journal={Nachhaltige Industrie}, publisher={Springer Science and Business Media LLC}, author={Rasor, Anja and Koldewey, Christian and Dumitrescu, Roman}, year={2025}, pages={40–43} }","ama":"Rasor A, Koldewey C, Dumitrescu R. Mit digitalen Hebeln zur Kreislaufwirtschaft. <i>Nachhaltige Industrie</i>. 2025;6(2):40-43. doi:<a href=\"https://doi.org/10.1007/s43462-025-1406-x\">10.1007/s43462-025-1406-x</a>","chicago":"Rasor, Anja, Christian Koldewey, and Roman Dumitrescu. “Mit digitalen Hebeln zur Kreislaufwirtschaft.” <i>Nachhaltige Industrie</i> 6, no. 2 (2025): 40–43. <a href=\"https://doi.org/10.1007/s43462-025-1406-x\">https://doi.org/10.1007/s43462-025-1406-x</a>.","ieee":"A. Rasor, C. Koldewey, and R. Dumitrescu, “Mit digitalen Hebeln zur Kreislaufwirtschaft,” <i>Nachhaltige Industrie</i>, vol. 6, no. 2, pp. 40–43, 2025, doi: <a href=\"https://doi.org/10.1007/s43462-025-1406-x\">10.1007/s43462-025-1406-x</a>."},"page":"40-43","intvolume":"         6","publication_status":"published","publication_identifier":{"issn":["2662-7493","2662-7507"]},"issue":"2"},{"editor":[{"last_name":"Dumitrescu","id":"16190","full_name":"Dumitrescu, Roman","first_name":"Roman"},{"last_name":"Hölzle","full_name":"Hölzle, Katharina","first_name":"Katharina"}],"status":"public","type":"conference_editor","language":[{"iso":"eng"}],"_id":"64257","department":[{"_id":"563"}],"user_id":"15782","year":"2025","place":"Paderborn","citation":{"chicago":"Dumitrescu, Roman, and Katharina Hölzle, eds. <i>Vorausschau Und Technologieplanung - 19. Symposium Für Vorausschau Und Technologieplanung</i>. Paderborn: Verlagsschriftenreihe des Heinz Nixdorf Instituts, 2025. <a href=\"https://doi.org/10.17619/UNIPB/1-2467\">https://doi.org/10.17619/UNIPB/1-2467</a>.","ieee":"R. Dumitrescu and K. Hölzle, Eds., <i>Vorausschau und Technologieplanung - 19. Symposium für Vorausschau und Technologieplanung</i>. Paderborn: Verlagsschriftenreihe des Heinz Nixdorf Instituts, 2025.","ama":"Dumitrescu R, Hölzle K, eds. <i>Vorausschau Und Technologieplanung - 19. Symposium Für Vorausschau Und Technologieplanung</i>. Verlagsschriftenreihe des Heinz Nixdorf Instituts; 2025. doi:<a href=\"https://doi.org/10.17619/UNIPB/1-2467\">10.17619/UNIPB/1-2467</a>","apa":"Dumitrescu, R., &#38; Hölzle, K. (Eds.). (2025). <i>Vorausschau und Technologieplanung - 19. Symposium für Vorausschau und Technologieplanung</i>. Verlagsschriftenreihe des Heinz Nixdorf Instituts. <a href=\"https://doi.org/10.17619/UNIPB/1-2467\">https://doi.org/10.17619/UNIPB/1-2467</a>","bibtex":"@book{Dumitrescu_Hölzle_2025, place={Paderborn}, title={Vorausschau und Technologieplanung - 19. Symposium für Vorausschau und Technologieplanung}, DOI={<a href=\"https://doi.org/10.17619/UNIPB/1-2467\">10.17619/UNIPB/1-2467</a>}, publisher={Verlagsschriftenreihe des Heinz Nixdorf Instituts}, year={2025} }","short":"R. Dumitrescu, K. Hölzle, eds., Vorausschau Und Technologieplanung - 19. Symposium Für Vorausschau Und Technologieplanung, Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn, 2025.","mla":"Dumitrescu, Roman, and Katharina Hölzle, editors. <i>Vorausschau Und Technologieplanung - 19. Symposium Für Vorausschau Und Technologieplanung</i>. Verlagsschriftenreihe des Heinz Nixdorf Instituts, 2025, doi:<a href=\"https://doi.org/10.17619/UNIPB/1-2467\">10.17619/UNIPB/1-2467</a>."},"title":"Vorausschau und Technologieplanung - 19. Symposium für Vorausschau und Technologieplanung","doi":"10.17619/UNIPB/1-2467","publisher":"Verlagsschriftenreihe des Heinz Nixdorf Instituts","date_updated":"2026-02-19T10:37:27Z","date_created":"2026-02-19T10:36:46Z"},{"date_created":"2026-02-19T11:42:22Z","author":[{"full_name":"Bruno, Tommaso","last_name":"Bruno","first_name":"Tommaso"},{"first_name":"Effie","full_name":"Papageorgiou, Effie","last_name":"Papageorgiou"}],"date_updated":"2026-02-19T11:43:16Z","title":"Blow-up exponents and a semilinear elliptic equation for the fractional Laplacian on hyperbolic spaces","citation":{"chicago":"Bruno, Tommaso, and Effie Papageorgiou. “Blow-up Exponents and a Semilinear Elliptic Equation for the Fractional Laplacian on Hyperbolic Spaces.” <i>ArXiv:2509.12349</i>, 2025.","ieee":"T. Bruno and E. Papageorgiou, “Blow-up exponents and a semilinear elliptic equation for the fractional Laplacian on hyperbolic spaces,” <i>arXiv:2509.12349</i>. 2025.","ama":"Bruno T, Papageorgiou E. Blow-up exponents and a semilinear elliptic equation for the fractional Laplacian on hyperbolic spaces. <i>arXiv:250912349</i>. Published online 2025.","apa":"Bruno, T., &#38; Papageorgiou, E. (2025). Blow-up exponents and a semilinear elliptic equation for the fractional Laplacian on hyperbolic spaces. In <i>arXiv:2509.12349</i>.","bibtex":"@article{Bruno_Papageorgiou_2025, title={Blow-up exponents and a semilinear elliptic equation for the fractional Laplacian on hyperbolic spaces}, journal={arXiv:2509.12349}, author={Bruno, Tommaso and Papageorgiou, Effie}, year={2025} }","mla":"Bruno, Tommaso, and Effie Papageorgiou. “Blow-up Exponents and a Semilinear Elliptic Equation for the Fractional Laplacian on Hyperbolic Spaces.” <i>ArXiv:2509.12349</i>, 2025.","short":"T. Bruno, E. Papageorgiou, ArXiv:2509.12349 (2025)."},"year":"2025","user_id":"100325","_id":"64267","external_id":{"arxiv":["2509.12349"]},"project":[{"name":"TRR 358: Ganzzahlige Strukturen in Geometrie und Darstellungstheorie","_id":"357"}],"language":[{"iso":"eng"}],"publication":"arXiv:2509.12349","type":"preprint","status":"public","abstract":[{"text":"Let $\\mathbb{H}^n$ be the $n$-dimensional real hyperbolic space, $Δ$ its nonnegative Laplace--Beltrami operator whose bottom of the spectrum we denote by $λ_{0}$, and $σ\\in (0,1)$.\r\n  The aim of this paper is twofold. On the one hand, we determine the Fujita exponent for the fractional heat equation \\[\\partial_{t} u + Δ^σu = e^{βt}|u|^{γ-1}u,\\] by proving that nontrivial positive global solutions exist if and only if $γ\\geq 1 + β/ λ_{0}^σ$. On the other hand, we prove the existence of non-negative, bounded and finite energy solutions of the semilinear fractional elliptic equation \\[\r\n  Δ^σ v - λ^σ v - v^γ=0 \\] for $0\\leq λ\\leq λ_{0}$ and $1<γ< \\frac{n+2σ}{n-2σ}$. The two problems are known to be connected and the latter, aside from its independent interest, is actually instrumental to the former.\r\n  \\smallskip\r\n  At the core of our results stands a novel fractional Poincaré-type inequality expressed in terms of a new scale of $L^{2}$ fractional Sobolev spaces, which sharpens those known so far, and which holds more generally on Riemannian symmetric spaces of non-compact type. We also establish an associated Rellich--Kondrachov-like compact embedding theorem for radial functions, along with other related properties.","lang":"eng"}]},{"type":"preprint","publication":"arXiv:2506.17042","status":"public","abstract":[{"text":"We study the large-time asymptotic behavior of solutions to the discrete-time heat equation, i.e., caloric functions, on affine buildings, including those without transitive group actions. For each $p \\in [1, \\infty]$, we introduce a notion of a $p$-mass function and prove that caloric functions with initial data belonging to certain weighted-$\\ell^1$ spaces or to the radial $\\ell^1$ class, asymptotically decouple as the product of this mass function and the heat kernel. These results extend classical analogues from Euclidean spaces and symmetric spaces of non-compact type to the non-Archimedean setting, and remain valid even for exotic buildings beyond the Bruhat--Tits framework. We characterize the spatial concentration of heat kernels in $p$-norms and describe the geometry of associated critical regions. Our results highlight substantial differences in the asymptotic regimes depending on the value of $p$, and clarify the interplay between volume growth and heat diffusion.","lang":"eng"}],"user_id":"100325","project":[{"name":"TRR 358: Ganzzahlige Strukturen in Geometrie und Darstellungstheorie","_id":"357"}],"_id":"64266","external_id":{"arxiv":["2506.17042"]},"language":[{"iso":"eng"}],"citation":{"mla":"Papageorgiou, Effie, and Bartosz Trojan. “Mass Functions and Asymptotic Behavior of Caloric Functions on Affine Buildings.” <i>ArXiv:2506.17042</i>, 2025.","bibtex":"@article{Papageorgiou_Trojan_2025, title={Mass Functions and Asymptotic Behavior of Caloric Functions on Affine Buildings}, journal={arXiv:2506.17042}, author={Papageorgiou, Effie and Trojan, Bartosz}, year={2025} }","short":"E. Papageorgiou, B. Trojan, ArXiv:2506.17042 (2025).","apa":"Papageorgiou, E., &#38; Trojan, B. (2025). Mass Functions and Asymptotic Behavior of Caloric Functions on Affine Buildings. In <i>arXiv:2506.17042</i>.","ama":"Papageorgiou E, Trojan B. Mass Functions and Asymptotic Behavior of Caloric Functions on Affine Buildings. <i>arXiv:250617042</i>. Published online 2025.","ieee":"E. Papageorgiou and B. Trojan, “Mass Functions and Asymptotic Behavior of Caloric Functions on Affine Buildings,” <i>arXiv:2506.17042</i>. 2025.","chicago":"Papageorgiou, Effie, and Bartosz Trojan. “Mass Functions and Asymptotic Behavior of Caloric Functions on Affine Buildings.” <i>ArXiv:2506.17042</i>, 2025."},"year":"2025","author":[{"first_name":"Effie","last_name":"Papageorgiou","full_name":"Papageorgiou, Effie"},{"last_name":"Trojan","full_name":"Trojan, Bartosz","first_name":"Bartosz"}],"date_created":"2026-02-19T11:41:25Z","date_updated":"2026-02-19T11:43:53Z","title":"Mass Functions and Asymptotic Behavior of Caloric Functions on Affine Buildings"},{"date_created":"2025-10-23T10:59:59Z","publisher":"MDPI AG","title":"VCSELs: Influence of Design on Performance and Data Transmission over Multi-Mode and Single-Mode Fibers","issue":"10","year":"2025","language":[{"iso":"eng"}],"publication":"Photonics","abstract":[{"lang":"eng","text":"<jats:p>Substantial improvements in the performance of optical interconnects based on multi-mode fibers are required to support emerging single-channel data transmission rates of 200 Gb/s and 400 Gb/s. Future optical components must combine very high modulation bandwidths—supporting signaling at 100 Gbaud and 200 Gbaud—with reduced spectral width to mitigate chromatic-dispersion-induced pulse broadening and increased brightness to further restrict flux-confining area in multi-mode fibers and thereby increase the effective modal bandwidth (EMB). A particularly promising route to improved performance within standard oxide-confined VCSEL technology is the introduction of multiple isolated or optically coupled oxide-confined apertures, which we refer to collectively as multi-aperture (MA) VCSEL arrays. We show that properly designed MA VCSELs exhibit narrow emission spectra, narrow far-field profiles and extended intrinsic modulation bandwidths, enabling longer-reach data transmission over both multi-mode (MMF) and single-mode fibers (SMF). One approach uses optically isolated apertures with lateral dimensions of approximately 2–3 µm arranged with a pitch of 10–12 µm or less. Such devices demonstrate relaxation oscillation frequencies of around 30 GHz in continuous-wave operation and intrinsic modulation bandwidths approaching 50 GHz. Compared with a conventional single-aperture VCSELs of equivalent oxide-confined area, MA designs can reduce the spectral width (root mean square values &lt; 0.15 nm), lower series resistance (≈50 Ω) and limit junction overheating through more efficient multi-spot heat dissipation at the same total current. As each aperture lases in a single transverse mode, these devices exhibit narrow far-field patterns. In combination with well-defined spacing between emitting spots, they permit tailored restricted launch conditions in MMFs, enhancing effective modal bandwidth. In another MA approach, the apertures are optically coupled such that self-injection locking (SIL) leads to lasing in a single supermode. One may regard one of the supermodes as acting as a master mode controlling the other one. Streak-camera studies reveal post-pulse oscillations in the SIL regime at frequencies up to 100 GHz. MA VCSELs enable a favorable combination of wavelength chirp and chromatic dispersion, extending transmission distances over MMFs beyond those expected for zero-chirp sources and supporting transfer bandwidths up to 60 GHz over kilometer-length SMF links.</jats:p>"}],"volume":12,"author":[{"full_name":"Ledentsov, Nikolay N.","last_name":"Ledentsov","first_name":"Nikolay N."},{"first_name":"Nikolay","full_name":"Ledentsov, Nikolay","last_name":"Ledentsov"},{"last_name":"Shchukin","full_name":"Shchukin, Vitaly A.","first_name":"Vitaly A."},{"first_name":"Alexander N.","full_name":"Ledentsov, Alexander N.","last_name":"Ledentsov"},{"first_name":"Oleg Yu.","full_name":"Makarov, Oleg Yu.","last_name":"Makarov"},{"first_name":"Ilya E.","full_name":"Titkov, Ilya E.","last_name":"Titkov"},{"full_name":"Lindemann, Markus","last_name":"Lindemann","first_name":"Markus"},{"last_name":"de Adelsburg Ettmayer","full_name":"de Adelsburg Ettmayer, Thomas","first_name":"Thomas"},{"id":"115298","full_name":"Gerhardt, Nils Christopher","orcid":"0009-0002-5538-231X","last_name":"Gerhardt","first_name":"Nils Christopher"},{"first_name":"Martin R.","last_name":"Hofmann","full_name":"Hofmann, Martin R."},{"first_name":"Xin","full_name":"Chen, Xin","last_name":"Chen"},{"first_name":"Jason E.","full_name":"Hurley, Jason E.","last_name":"Hurley"},{"first_name":"Hao","last_name":"Dong","full_name":"Dong, Hao"},{"first_name":"Ming-Jun","last_name":"Li","full_name":"Li, Ming-Jun"}],"date_updated":"2026-02-19T12:39:12Z","doi":"10.3390/photonics12101037","publication_identifier":{"issn":["2304-6732"]},"publication_status":"published","intvolume":"        12","citation":{"ama":"Ledentsov NN, Ledentsov N, Shchukin VA, et al. VCSELs: Influence of Design on Performance and Data Transmission over Multi-Mode and Single-Mode Fibers. <i>Photonics</i>. 2025;12(10). doi:<a href=\"https://doi.org/10.3390/photonics12101037\">10.3390/photonics12101037</a>","chicago":"Ledentsov, Nikolay N., Nikolay Ledentsov, Vitaly A. Shchukin, Alexander N. Ledentsov, Oleg Yu. Makarov, Ilya E. Titkov, Markus Lindemann, et al. “VCSELs: Influence of Design on Performance and Data Transmission over Multi-Mode and Single-Mode Fibers.” <i>Photonics</i> 12, no. 10 (2025). <a href=\"https://doi.org/10.3390/photonics12101037\">https://doi.org/10.3390/photonics12101037</a>.","ieee":"N. N. Ledentsov <i>et al.</i>, “VCSELs: Influence of Design on Performance and Data Transmission over Multi-Mode and Single-Mode Fibers,” <i>Photonics</i>, vol. 12, no. 10, Art. no. 1037, 2025, doi: <a href=\"https://doi.org/10.3390/photonics12101037\">10.3390/photonics12101037</a>.","apa":"Ledentsov, N. N., Ledentsov, N., Shchukin, V. A., Ledentsov, A. N., Makarov, O. Yu., Titkov, I. E., Lindemann, M., de Adelsburg Ettmayer, T., Gerhardt, N. C., Hofmann, M. R., Chen, X., Hurley, J. E., Dong, H., &#38; Li, M.-J. (2025). VCSELs: Influence of Design on Performance and Data Transmission over Multi-Mode and Single-Mode Fibers. <i>Photonics</i>, <i>12</i>(10), Article 1037. <a href=\"https://doi.org/10.3390/photonics12101037\">https://doi.org/10.3390/photonics12101037</a>","bibtex":"@article{Ledentsov_Ledentsov_Shchukin_Ledentsov_Makarov_Titkov_Lindemann_de Adelsburg Ettmayer_Gerhardt_Hofmann_et al._2025, title={VCSELs: Influence of Design on Performance and Data Transmission over Multi-Mode and Single-Mode Fibers}, volume={12}, DOI={<a href=\"https://doi.org/10.3390/photonics12101037\">10.3390/photonics12101037</a>}, number={101037}, journal={Photonics}, publisher={MDPI AG}, author={Ledentsov, Nikolay N. and Ledentsov, Nikolay and Shchukin, Vitaly A. and Ledentsov, Alexander N. and Makarov, Oleg Yu. and Titkov, Ilya E. and Lindemann, Markus and de Adelsburg Ettmayer, Thomas and Gerhardt, Nils Christopher and Hofmann, Martin R. and et al.}, year={2025} }","short":"N.N. Ledentsov, N. Ledentsov, V.A. Shchukin, A.N. Ledentsov, O.Yu. Makarov, I.E. Titkov, M. Lindemann, T. de Adelsburg Ettmayer, N.C. Gerhardt, M.R. Hofmann, X. Chen, J.E. Hurley, H. Dong, M.-J. Li, Photonics 12 (2025).","mla":"Ledentsov, Nikolay N., et al. “VCSELs: Influence of Design on Performance and Data Transmission over Multi-Mode and Single-Mode Fibers.” <i>Photonics</i>, vol. 12, no. 10, 1037, MDPI AG, 2025, doi:<a href=\"https://doi.org/10.3390/photonics12101037\">10.3390/photonics12101037</a>."},"department":[{"_id":"977"}],"user_id":"15911","_id":"61932","article_number":"1037","type":"journal_article","status":"public"},{"article_number":"106120","language":[{"iso":"eng"}],"_id":"61931","department":[{"_id":"977"}],"user_id":"15911","abstract":[{"lang":"eng","text":"<jats:p>Recent research revealed that single-mode vertical-cavity surface-emitting lasers under spin injection (spin-VCSELs) have the potential to revolutionize laser technology for short-haul optical communications. While previous studies have focused solely on single-mode operation, this study introduces multimode spin-VCSELs. We experimentally demonstrate the existence of multi-resonant polarization dynamics when spin is injected, a phenomenon previously unobserved. The development opens the door to significantly faster and more efficient optical communication systems by harnessing the collective behavior of multiple laser modes. Furthermore, we lay the groundwork for understanding multimode operation through the extension of the single-mode spin–flip model, which forms the basis for present and future analyses of multimode spin-laser operation. This work is an important step toward realizing the full potential of spin-VCSELs and, thus, enables significantly improved performance of spin-VCSEL-based optical networks in the future.</jats:p>"}],"status":"public","publication":"APL Photonics","type":"journal_article","title":"Multimode vertical-cavity surface-emitting lasers under spin injection","doi":"10.1063/5.0286998","date_updated":"2026-02-19T12:39:00Z","publisher":"AIP Publishing","volume":10,"date_created":"2025-10-23T10:52:59Z","author":[{"last_name":"Diiankova","full_name":"Diiankova, Uliana","first_name":"Uliana"},{"first_name":"Mariusz","last_name":"Drong","full_name":"Drong, Mariusz"},{"last_name":"Pusch","full_name":"Pusch, Tobias","first_name":"Tobias"},{"last_name":"Michalzik","full_name":"Michalzik, Rainer","first_name":"Rainer"},{"full_name":"Lindemann, Markus","last_name":"Lindemann","first_name":"Markus"},{"first_name":"Nils Christopher","orcid":"0009-0002-5538-231X","last_name":"Gerhardt","full_name":"Gerhardt, Nils Christopher","id":"115298"},{"full_name":"Hofmann, Martin R.","last_name":"Hofmann","first_name":"Martin R."}],"year":"2025","intvolume":"        10","citation":{"ieee":"U. Diiankova <i>et al.</i>, “Multimode vertical-cavity surface-emitting lasers under spin injection,” <i>APL Photonics</i>, vol. 10, no. 10, Art. no. 106120, 2025, doi: <a href=\"https://doi.org/10.1063/5.0286998\">10.1063/5.0286998</a>.","chicago":"Diiankova, Uliana, Mariusz Drong, Tobias Pusch, Rainer Michalzik, Markus Lindemann, Nils Christopher Gerhardt, and Martin R. Hofmann. “Multimode Vertical-Cavity Surface-Emitting Lasers under Spin Injection.” <i>APL Photonics</i> 10, no. 10 (2025). <a href=\"https://doi.org/10.1063/5.0286998\">https://doi.org/10.1063/5.0286998</a>.","ama":"Diiankova U, Drong M, Pusch T, et al. Multimode vertical-cavity surface-emitting lasers under spin injection. <i>APL Photonics</i>. 2025;10(10). doi:<a href=\"https://doi.org/10.1063/5.0286998\">10.1063/5.0286998</a>","apa":"Diiankova, U., Drong, M., Pusch, T., Michalzik, R., Lindemann, M., Gerhardt, N. C., &#38; Hofmann, M. R. (2025). Multimode vertical-cavity surface-emitting lasers under spin injection. <i>APL Photonics</i>, <i>10</i>(10), Article 106120. <a href=\"https://doi.org/10.1063/5.0286998\">https://doi.org/10.1063/5.0286998</a>","mla":"Diiankova, Uliana, et al. “Multimode Vertical-Cavity Surface-Emitting Lasers under Spin Injection.” <i>APL Photonics</i>, vol. 10, no. 10, 106120, AIP Publishing, 2025, doi:<a href=\"https://doi.org/10.1063/5.0286998\">10.1063/5.0286998</a>.","bibtex":"@article{Diiankova_Drong_Pusch_Michalzik_Lindemann_Gerhardt_Hofmann_2025, title={Multimode vertical-cavity surface-emitting lasers under spin injection}, volume={10}, DOI={<a href=\"https://doi.org/10.1063/5.0286998\">10.1063/5.0286998</a>}, number={10106120}, journal={APL Photonics}, publisher={AIP Publishing}, author={Diiankova, Uliana and Drong, Mariusz and Pusch, Tobias and Michalzik, Rainer and Lindemann, Markus and Gerhardt, Nils Christopher and Hofmann, Martin R.}, year={2025} }","short":"U. Diiankova, M. Drong, T. Pusch, R. Michalzik, M. Lindemann, N.C. Gerhardt, M.R. Hofmann, APL Photonics 10 (2025)."},"publication_identifier":{"issn":["2378-0967"]},"publication_status":"published","issue":"10"},{"status":"public","type":"journal_article","file_date_updated":"2026-02-19T14:14:39Z","article_type":"original","department":[{"_id":"555"}],"user_id":"73664","_id":"56717","project":[{"name":"TRR 358 - Ganzzahlige Strukturen in Geometrie und Darstellungstheorie","_id":"357"}],"intvolume":"        36","page":"1671-1694","citation":{"chicago":"Langen, Lukas, and Margit Rösler. “Multiresolution Analysis on Spectra of Hermitian Matrices.” <i>Indagationes Mathematicae</i> 36, no. 6 (2025): 1671–94.","ieee":"L. Langen and M. Rösler, “Multiresolution analysis on spectra of hermitian matrices,” <i>Indagationes Mathematicae</i>, vol. 36, no. 6, pp. 1671–1694, 2025.","ama":"Langen L, Rösler M. Multiresolution analysis on spectra of hermitian matrices. <i>Indagationes Mathematicae</i>. 2025;36(6):1671-1694.","mla":"Langen, Lukas, and Margit Rösler. “Multiresolution Analysis on Spectra of Hermitian Matrices.” <i>Indagationes Mathematicae</i>, vol. 36, no. 6, Elsevier, 2025, pp. 1671–94.","bibtex":"@article{Langen_Rösler_2025, title={Multiresolution analysis on spectra of hermitian matrices}, volume={36}, number={6}, journal={Indagationes Mathematicae}, publisher={Elsevier}, author={Langen, Lukas and Rösler, Margit}, year={2025}, pages={1671–1694} }","short":"L. Langen, M. Rösler, Indagationes Mathematicae 36 (2025) 1671–1694.","apa":"Langen, L., &#38; Rösler, M. (2025). Multiresolution analysis on spectra of hermitian matrices. <i>Indagationes Mathematicae</i>, <i>36</i>(6), 1671–1694."},"related_material":{"link":[{"url":"https://arxiv.org/abs/2410.10364","relation":"research_paper"}]},"has_accepted_license":"1","publication_status":"published","main_file_link":[{"url":"https://doi.org/10.1016/j.indag.2025.03.009"}],"volume":36,"author":[{"full_name":"Langen, Lukas","id":"73664","last_name":"Langen","first_name":"Lukas"},{"id":"37390","full_name":"Rösler, Margit","last_name":"Rösler","first_name":"Margit"}],"date_updated":"2026-02-19T14:16:43Z","file":[{"creator":"llangen","date_created":"2026-02-19T14:14:39Z","date_updated":"2026-02-19T14:14:39Z","file_name":"MSA_hermitsch_published.pdf","access_level":"closed","file_id":"64288","file_size":443262,"content_type":"application/pdf","relation":"main_file","success":1}],"abstract":[{"text":"We establish a multiresolution analysis on the space $\\text{Herm}(n)$ of\r\n$n\\times n$ complex Hermitian matrices which is adapted to invariance under\r\nconjugation by the unitary group $U(n).$ The orbits under this action are\r\nparametrized by the possible ordered spectra of Hermitian matrices, which\r\nconstitute a closed Weyl chamber of type $A_{n-1}$ in $\\mathbb R^n.$ The space\r\n$L^2(\\text{Herm}(n))^{U(n)}$ of radial, i.e. $U(n)$-invariant $L^2$-functions\r\non $\\text{Herm}(n)$ is naturally identified with a certain weighted $L^2$-space\r\non this chamber.\r\n  The scale spaces of our multiresolution analysis are obtained by usual dyadic\r\ndilations as well as generalized translations of a scaling function, where the\r\ngeneralized translation is a hypergroup translation which respects the radial\r\ngeometry. We provide a concise criterion to characterize orthonormal wavelet\r\nbases and show that such bases always exist. They provide natural orthonormal\r\nbases of the space $L^2(\\text{Herm}(n))^{U(n)}.$\r\n  Furthermore, we show how to obtain radial scaling functions from classical\r\nscaling functions on $\\mathbb R^{n}$. Finally, generalizations related to the\r\nCartan decompositions for general compact Lie groups are indicated.","lang":"eng"}],"publication":"Indagationes Mathematicae","language":[{"iso":"eng"}],"ddc":["510"],"external_id":{"arxiv":["2410.10364"]},"year":"2025","issue":"6","title":"Multiresolution analysis on spectra of hermitian matrices","date_created":"2024-10-22T09:31:19Z","publisher":"Elsevier"},{"title":"On norms on Harish-Chandra modules","language":[{"iso":"eng"}],"_id":"64287","date_updated":"2026-02-19T13:49:37Z","user_id":"52730","date_created":"2026-02-19T13:48:26Z","author":[{"last_name":"Bernstein","full_name":"Bernstein, Joseph","first_name":"Joseph"},{"first_name":"Pritam","full_name":"Ganguly, Pritam","last_name":"Ganguly"},{"first_name":"Bernhard","full_name":"Krötz, Bernhard","last_name":"Krötz"},{"first_name":"Job","full_name":"Kuit, Job","last_name":"Kuit"},{"full_name":"Sayag, Eitan","last_name":"Sayag","first_name":"Eitan"}],"abstract":[{"lang":"eng","text":"The Casselman-Wallach theorem is a foundational result in the theory of representations of real reductive groups connecting algebraic representations to topological representations. We provide a quantitative version of this theorem. For that we introduce the notion of {\\it Sobolev gap} for a Harish-Chandra module. This is a new invariant whose finiteness is highly non-trivial. We determine the Sobolev gap for representations in the unitary dual of the group $\\SL(2,\\R)$ and establish uniform finiteness results in general for representations of the discrete series and the minimal principal series. We use these notions to reformulate and extend classical results of Bernstein and Reznikov concerning automorphic functionals with respect to cocompact lattices. In particular, we prove an abstract convexity bound which applies to automorphic functionals with respect to general lattices in $\\SL(2,\\R)$ and is independent of the type of unitarizable irreducible Harish-Chandra module. Finally, we offer an extensive list of open problems."}],"year":"2025","status":"public","citation":{"chicago":"Bernstein, Joseph, Pritam Ganguly, Bernhard Krötz, Job Kuit, and Eitan Sayag. “On Norms on Harish-Chandra Modules,” n.d.","ieee":"J. Bernstein, P. Ganguly, B. Krötz, J. Kuit, and E. Sayag, “On norms on Harish-Chandra modules.” .","ama":"Bernstein J, Ganguly P, Krötz B, Kuit J, Sayag E. On norms on Harish-Chandra modules.","mla":"Bernstein, Joseph, et al. <i>On Norms on Harish-Chandra Modules</i>.","bibtex":"@article{Bernstein_Ganguly_Krötz_Kuit_Sayag, title={On norms on Harish-Chandra modules}, author={Bernstein, Joseph and Ganguly, Pritam and Krötz, Bernhard and Kuit, Job and Sayag, Eitan} }","short":"J. Bernstein, P. Ganguly, B. Krötz, J. Kuit, E. Sayag, (n.d.).","apa":"Bernstein, J., Ganguly, P., Krötz, B., Kuit, J., &#38; Sayag, E. (n.d.). <i>On norms on Harish-Chandra modules</i>."},"publication_status":"submitted","type":"preprint"},{"status":"public","abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title>\r\n          <jats:p>Motivated by asymptotic symmetry groups in general relativity, we consider projective unitary representations <jats:inline-formula>\r\n              <jats:alternatives>\r\n                <jats:tex-math>$$\\overline{\\rho }$$</jats:tex-math>\r\n                <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n                  <mml:mover>\r\n                    <mml:mi>ρ</mml:mi>\r\n                    <mml:mo>¯</mml:mo>\r\n                  </mml:mover>\r\n                </mml:math>\r\n              </jats:alternatives>\r\n            </jats:inline-formula> of the Lie group <jats:inline-formula>\r\n              <jats:alternatives>\r\n                <jats:tex-math>$${{\\,\\textrm{Diff}\\,}}_c(M)$$</jats:tex-math>\r\n                <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n                  <mml:mrow>\r\n                    <mml:msub>\r\n                      <mml:mrow>\r\n                        <mml:mspace/>\r\n                        <mml:mtext>Diff</mml:mtext>\r\n                        <mml:mspace/>\r\n                      </mml:mrow>\r\n                      <mml:mi>c</mml:mi>\r\n                    </mml:msub>\r\n                    <mml:mrow>\r\n                      <mml:mo>(</mml:mo>\r\n                      <mml:mi>M</mml:mi>\r\n                      <mml:mo>)</mml:mo>\r\n                    </mml:mrow>\r\n                  </mml:mrow>\r\n                </mml:math>\r\n              </jats:alternatives>\r\n            </jats:inline-formula> of compactly supported diffeomorphisms of a smooth manifold <jats:italic>M</jats:italic> that satisfy a so-called generalized positive energy condition. In particular, this captures representations that are in a suitable sense compatible with a KMS state on the von Neumann algebra generated by <jats:inline-formula>\r\n              <jats:alternatives>\r\n                <jats:tex-math>$$\\overline{\\rho }$$</jats:tex-math>\r\n                <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n                  <mml:mover>\r\n                    <mml:mi>ρ</mml:mi>\r\n                    <mml:mo>¯</mml:mo>\r\n                  </mml:mover>\r\n                </mml:math>\r\n              </jats:alternatives>\r\n            </jats:inline-formula>. We show that if <jats:italic>M</jats:italic> is connected and <jats:inline-formula>\r\n              <jats:alternatives>\r\n                <jats:tex-math>$$\\dim (M) &gt; 1$$</jats:tex-math>\r\n                <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n                  <mml:mrow>\r\n                    <mml:mo>dim</mml:mo>\r\n                    <mml:mo>(</mml:mo>\r\n                    <mml:mi>M</mml:mi>\r\n                    <mml:mo>)</mml:mo>\r\n                    <mml:mo>&gt;</mml:mo>\r\n                    <mml:mn>1</mml:mn>\r\n                  </mml:mrow>\r\n                </mml:math>\r\n              </jats:alternatives>\r\n            </jats:inline-formula>, then any such representation is necessarily trivial on the identity component <jats:inline-formula>\r\n              <jats:alternatives>\r\n                <jats:tex-math>$${{\\,\\textrm{Diff}\\,}}_c(M)_0$$</jats:tex-math>\r\n                <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n                  <mml:mrow>\r\n                    <mml:msub>\r\n                      <mml:mrow>\r\n                        <mml:mspace/>\r\n                        <mml:mtext>Diff</mml:mtext>\r\n                        <mml:mspace/>\r\n                      </mml:mrow>\r\n                      <mml:mi>c</mml:mi>\r\n                    </mml:msub>\r\n                    <mml:msub>\r\n                      <mml:mrow>\r\n                        <mml:mo>(</mml:mo>\r\n                        <mml:mi>M</mml:mi>\r\n                        <mml:mo>)</mml:mo>\r\n                      </mml:mrow>\r\n                      <mml:mn>0</mml:mn>\r\n                    </mml:msub>\r\n                  </mml:mrow>\r\n                </mml:math>\r\n              </jats:alternatives>\r\n            </jats:inline-formula>. As an intermediate step towards this result, we determine the continuous second Lie algebra cohomology <jats:inline-formula>\r\n              <jats:alternatives>\r\n                <jats:tex-math>$$H^2_\\textrm{ct}(\\mathcal {X}_c(M), \\mathbb {R})$$</jats:tex-math>\r\n                <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\">\r\n                  <mml:mrow>\r\n                    <mml:msubsup>\r\n                      <mml:mi>H</mml:mi>\r\n                      <mml:mtext>ct</mml:mtext>\r\n                      <mml:mn>2</mml:mn>\r\n                    </mml:msubsup>\r\n                    <mml:mrow>\r\n                      <mml:mo>(</mml:mo>\r\n                      <mml:msub>\r\n                        <mml:mi>X</mml:mi>\r\n                        <mml:mi>c</mml:mi>\r\n                      </mml:msub>\r\n                      <mml:mrow>\r\n                        <mml:mo>(</mml:mo>\r\n                        <mml:mi>M</mml:mi>\r\n                        <mml:mo>)</mml:mo>\r\n                      </mml:mrow>\r\n                      <mml:mo>,</mml:mo>\r\n                      <mml:mi>R</mml:mi>\r\n                      <mml:mo>)</mml:mo>\r\n                    </mml:mrow>\r\n                  </mml:mrow>\r\n                </mml:math>\r\n              </jats:alternatives>\r\n            </jats:inline-formula> of the Lie algebra of compactly supported vector fields. This is subtly different from Gelfand–Fuks cohomology in view of the compact support condition.</jats:p>"}],"publication":"Communications in Mathematical Physics","type":"journal_article","language":[{"iso":"eng"}],"article_number":"45","department":[{"_id":"93"}],"user_id":"104095","_id":"64289","intvolume":"       406","citation":{"chicago":"Janssens, Bas, and Milan Niestijl. “Generalized Positive Energy Representations of the Group of Compactly Supported Diffeomorphisms.” <i>Communications in Mathematical Physics</i> 406, no. 2 (2025). <a href=\"https://doi.org/10.1007/s00220-024-05226-w\">https://doi.org/10.1007/s00220-024-05226-w</a>.","ieee":"B. Janssens and M. Niestijl, “Generalized Positive Energy Representations of the Group of Compactly Supported Diffeomorphisms,” <i>Communications in Mathematical Physics</i>, vol. 406, no. 2, Art. no. 45, 2025, doi: <a href=\"https://doi.org/10.1007/s00220-024-05226-w\">10.1007/s00220-024-05226-w</a>.","ama":"Janssens B, Niestijl M. Generalized Positive Energy Representations of the Group of Compactly Supported Diffeomorphisms. <i>Communications in Mathematical Physics</i>. 2025;406(2). doi:<a href=\"https://doi.org/10.1007/s00220-024-05226-w\">10.1007/s00220-024-05226-w</a>","bibtex":"@article{Janssens_Niestijl_2025, title={Generalized Positive Energy Representations of the Group of Compactly Supported Diffeomorphisms}, volume={406}, DOI={<a href=\"https://doi.org/10.1007/s00220-024-05226-w\">10.1007/s00220-024-05226-w</a>}, number={245}, journal={Communications in Mathematical Physics}, publisher={Springer Science and Business Media LLC}, author={Janssens, Bas and Niestijl, Milan}, year={2025} }","short":"B. Janssens, M. Niestijl, Communications in Mathematical Physics 406 (2025).","mla":"Janssens, Bas, and Milan Niestijl. “Generalized Positive Energy Representations of the Group of Compactly Supported Diffeomorphisms.” <i>Communications in Mathematical Physics</i>, vol. 406, no. 2, 45, Springer Science and Business Media LLC, 2025, doi:<a href=\"https://doi.org/10.1007/s00220-024-05226-w\">10.1007/s00220-024-05226-w</a>.","apa":"Janssens, B., &#38; Niestijl, M. (2025). Generalized Positive Energy Representations of the Group of Compactly Supported Diffeomorphisms. <i>Communications in Mathematical Physics</i>, <i>406</i>(2), Article 45. <a href=\"https://doi.org/10.1007/s00220-024-05226-w\">https://doi.org/10.1007/s00220-024-05226-w</a>"},"year":"2025","issue":"2","publication_identifier":{"issn":["0010-3616","1432-0916"]},"publication_status":"published","doi":"10.1007/s00220-024-05226-w","title":"Generalized Positive Energy Representations of the Group of Compactly Supported Diffeomorphisms","volume":406,"author":[{"first_name":"Bas","full_name":"Janssens, Bas","last_name":"Janssens"},{"full_name":"Niestijl, Milan","last_name":"Niestijl","first_name":"Milan"}],"date_created":"2026-02-20T09:33:11Z","publisher":"Springer Science and Business Media LLC","date_updated":"2026-02-20T09:41:41Z"},{"title":"Ressourcen für Resilienz in islamischer Tradition. Theologische, ethische und mystische Perspektiven","volume":"2/2025","author":[{"orcid":"0009-0005-6980-2727","last_name":"Kokew","id":"111362","full_name":"Kokew, Stephan Matthias","first_name":"Stephan Matthias"}],"date_created":"2025-11-12T21:25:04Z","date_updated":"2026-02-19T18:51:47Z","publisher":"Aschendorff","page":"88-89","citation":{"ama":"Kokew SM. <i>Ressourcen für Resilienz in islamischer Tradition. Theologische, ethische und mystische Perspektiven</i>. Vol 2/2025. Aschendorff; 2025:88-89.","apa":"Kokew, S. M. (2025). <i>Ressourcen für Resilienz in islamischer Tradition. Theologische, ethische und mystische Perspektiven</i> (Vol. 2/2025, pp. 88–89). Aschendorff.","short":"S.M. Kokew, Ressourcen für Resilienz in islamischer Tradition. Theologische, ethische und mystische Perspektiven, Aschendorff, Münster, 2025.","bibtex":"@book{Kokew_2025, place={Münster}, series={CIBEDO-BEITRÄGE}, title={Ressourcen für Resilienz in islamischer Tradition. Theologische, ethische und mystische Perspektiven}, volume={2/2025}, publisher={Aschendorff}, author={Kokew, Stephan Matthias}, year={2025}, pages={88–89}, collection={CIBEDO-BEITRÄGE} }","mla":"Kokew, Stephan Matthias. <i>Ressourcen für Resilienz in islamischer Tradition. Theologische, ethische und mystische Perspektiven</i>. Aschendorff, 2025, pp. 88–89.","ieee":"S. M. Kokew, <i>Ressourcen für Resilienz in islamischer Tradition. Theologische, ethische und mystische Perspektiven</i>, vol. 2/2025. Münster: Aschendorff, 2025, pp. 88–89.","chicago":"Kokew, Stephan Matthias. <i>Ressourcen für Resilienz in islamischer Tradition. Theologische, ethische und mystische Perspektiven</i>. Vol. 2/2025. CIBEDO-BEITRÄGE. Münster: Aschendorff, 2025."},"year":"2025","place":"Münster","publication_identifier":{"issn":["1864-9483"]},"publication_status":"published","language":[{"iso":"ger"}],"department":[{"_id":"469"}],"series_title":"CIBEDO-BEITRÄGE","user_id":"111362","_id":"62172","status":"public","type":"report"},{"doi":"10.1609/aaai.v39i14.33651","date_updated":"2026-02-20T10:07:00Z","author":[{"id":"99353","full_name":"Mahmood, Yasir","last_name":"Mahmood","first_name":"Yasir"},{"last_name":"Hecher","full_name":"Hecher, Markus","first_name":"Markus"},{"last_name":"Ngonga Ngomo","full_name":"Ngonga Ngomo, Axel-Cyrille","id":"65716","first_name":"Axel-Cyrille"}],"volume":39,"citation":{"apa":"Mahmood, Y., Hecher, M., &#38; Ngonga Ngomo, A.-C. (2025). Dung’s Argumentation Framework: Unveiling the Expressive Power with Inconsistent Databases. <i>Proceedings of the AAAI Conference on Artificial Intelligence</i>, <i>39</i>(14), 15058–15066. <a href=\"https://doi.org/10.1609/aaai.v39i14.33651\">https://doi.org/10.1609/aaai.v39i14.33651</a>","mla":"Mahmood, Yasir, et al. “Dung’s Argumentation Framework: Unveiling the Expressive Power with Inconsistent Databases.” <i>Proceedings of the AAAI Conference on Artificial Intelligence</i>, vol. 39, no. 14, Association for the Advancement of Artificial Intelligence (AAAI), 2025, pp. 15058–66, doi:<a href=\"https://doi.org/10.1609/aaai.v39i14.33651\">10.1609/aaai.v39i14.33651</a>.","bibtex":"@inproceedings{Mahmood_Hecher_Ngonga Ngomo_2025, title={Dung’s Argumentation Framework: Unveiling the Expressive Power with Inconsistent Databases}, volume={39}, DOI={<a href=\"https://doi.org/10.1609/aaai.v39i14.33651\">10.1609/aaai.v39i14.33651</a>}, number={14}, booktitle={Proceedings of the AAAI Conference on Artificial Intelligence}, publisher={Association for the Advancement of Artificial Intelligence (AAAI)}, author={Mahmood, Yasir and Hecher, Markus and Ngonga Ngomo, Axel-Cyrille}, year={2025}, pages={15058–15066} }","short":"Y. Mahmood, M. Hecher, A.-C. Ngonga Ngomo, in: Proceedings of the AAAI Conference on Artificial Intelligence, Association for the Advancement of Artificial Intelligence (AAAI), 2025, pp. 15058–15066.","ama":"Mahmood Y, Hecher M, Ngonga Ngomo A-C. Dung’s Argumentation Framework: Unveiling the Expressive Power with Inconsistent Databases. In: <i>Proceedings of the AAAI Conference on Artificial Intelligence</i>. Vol 39. Association for the Advancement of Artificial Intelligence (AAAI); 2025:15058-15066. doi:<a href=\"https://doi.org/10.1609/aaai.v39i14.33651\">10.1609/aaai.v39i14.33651</a>","chicago":"Mahmood, Yasir, Markus Hecher, and Axel-Cyrille Ngonga Ngomo. “Dung’s Argumentation Framework: Unveiling the Expressive Power with Inconsistent Databases.” In <i>Proceedings of the AAAI Conference on Artificial Intelligence</i>, 39:15058–66. Association for the Advancement of Artificial Intelligence (AAAI), 2025. <a href=\"https://doi.org/10.1609/aaai.v39i14.33651\">https://doi.org/10.1609/aaai.v39i14.33651</a>.","ieee":"Y. Mahmood, M. Hecher, and A.-C. Ngonga Ngomo, “Dung’s Argumentation Framework: Unveiling the Expressive Power with Inconsistent Databases,” in <i>Proceedings of the AAAI Conference on Artificial Intelligence</i>, 2025, vol. 39, no. 14, pp. 15058–15066, doi: <a href=\"https://doi.org/10.1609/aaai.v39i14.33651\">10.1609/aaai.v39i14.33651</a>."},"page":"15058-15066","intvolume":"        39","publication_status":"published","publication_identifier":{"issn":["2374-3468","2159-5399"]},"project":[{"name":"TRR 318; TP B01: Ein dialogbasierter Ansatz zur Erklärung von Modellen des maschinellen Lernens","_id":"121"}],"_id":"59910","user_id":"99353","department":[{"_id":"574"}],"status":"public","type":"conference","title":"Dung’s Argumentation Framework: Unveiling the Expressive Power with Inconsistent Databases","publisher":"Association for the Advancement of Artificial Intelligence (AAAI)","date_created":"2025-05-15T11:05:36Z","year":"2025","issue":"14","language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"<jats:p>The connection between inconsistent databases and Dung’s abstract argumentation framework has recently drawn growing interest. Specifically, an inconsistent database, involving certain types of integrity constraints such as functional and inclusion dependencies, can be viewed as an argumentation framework in Dung’s setting. Nevertheless, no prior work has explored the exact expressive power of Dung’s theory of argumentation when compared to inconsistent databases and integrity constraints. In this paper, we close this gap by arguing that an argumentation framework can also be viewed as an inconsistent database. We first establish a connection between subset-repairs for databases and extensions for AFs considering conflict-free, naive, admissible, and preferred semantics. Further, we define a new family of attribute-based repairs based on the principle of maximal content preservation. The effectiveness of these repairs is then highlighted by connecting them to stable, semi-stable, and stage semantics. Our main contributions include translating an argumentation framework into a database together with integrity constraints. Moreover, this translation can be achieved in polynomial time, which is essential in transferring complexity results between the two formalisms.</jats:p>"}],"publication":"Proceedings of the AAAI Conference on Artificial Intelligence"},{"_id":"63181","department":[{"_id":"121"}],"user_id":"90339","file_date_updated":"2025-12-17T09:10:18Z","type":"journal_article","status":"public","oa":"1","date_updated":"2026-02-20T11:21:28Z","author":[{"first_name":"Katharina","last_name":"Neufeld","full_name":"Neufeld, Katharina"},{"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","last_name":"Steinhardt","orcid":"https://orcid.org/0000-0002-2590-6189","id":"90339","full_name":"Steinhardt, Isabel"},{"last_name":"Mauermeister","id":"98032","full_name":"Mauermeister, Sylvi","first_name":"Sylvi"}],"doi":"10.1108/cdi-10-2024-0442","main_file_link":[{"open_access":"1","url":"https://www.emerald.com/cdi/article/doi/10.1108/CDI-10-2024-0442/1310335"}],"has_accepted_license":"1","publication_identifier":{"issn":["1362-0436","1758-6003"]},"publication_status":"published","page":"1-19","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. <i>Career Development International</i>. Published online 2025:1-19. doi:<a href=\"https://doi.org/10.1108/cdi-10-2024-0442\">10.1108/cdi-10-2024-0442</a>","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,” <i>Career Development International</i>, pp. 1–19, 2025, doi: <a href=\"https://doi.org/10.1108/cdi-10-2024-0442\">10.1108/cdi-10-2024-0442</a>.","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.” <i>Career Development International</i>, 2025, 1–19. <a href=\"https://doi.org/10.1108/cdi-10-2024-0442\">https://doi.org/10.1108/cdi-10-2024-0442</a>.","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.” <i>Career Development International</i>, Emerald, 2025, pp. 1–19, doi:<a href=\"https://doi.org/10.1108/cdi-10-2024-0442\">10.1108/cdi-10-2024-0442</a>.","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={<a href=\"https://doi.org/10.1108/cdi-10-2024-0442\">10.1108/cdi-10-2024-0442</a>}, 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} }","short":"K. Neufeld, S. Ohly, D. Sedefoglu-Ulucak, I. Steinhardt, S. Mauermeister, Career Development International (2025) 1–19.","apa":"Neufeld, K., Ohly, S., Sedefoglu-Ulucak, D., Steinhardt, I., &#38; Mauermeister, S. (2025). Analyzing the role of family socio-economic status, education and work characteristics in times of generative artificial intelligence and digital divide. <i>Career Development International</i>, 1–19. <a href=\"https://doi.org/10.1108/cdi-10-2024-0442\">https://doi.org/10.1108/cdi-10-2024-0442</a>"},"ddc":["300"],"language":[{"iso":"eng"}],"publication":"Career Development International","abstract":[{"text":"<jats:sec>\r\n                    <jats:title>Purpose</jats:title>\r\n                    <jats:p>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.</jats:p>\r\n                  </jats:sec>\r\n                  <jats:sec>\r\n                    <jats:title>Design/methodology/approach</jats:title>\r\n                    <jats:p>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.</jats:p>\r\n                  </jats:sec>\r\n                  <jats:sec>\r\n                    <jats:title>Findings</jats:title>\r\n                    <jats:p>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.</jats:p>\r\n                  </jats:sec>\r\n                  <jats:sec>\r\n                    <jats:title>Originality/value</jats:title>\r\n                    <jats:p>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.</jats:p>\r\n                  </jats:sec>","lang":"eng"}],"file":[{"content_type":"application/pdf","relation":"main_file","success":1,"date_created":"2025-12-17T09:10:18Z","creator":"isste","date_updated":"2025-12-17T09:10:18Z","access_level":"closed","file_name":"2025 Neufeld et al. DD Family Career.pdf","file_id":"63182","file_size":718834}],"publisher":"Emerald","date_created":"2025-12-17T09:07:27Z","title":"Analyzing the role of family socio-economic status, education and work characteristics in times of generative artificial intelligence and digital divide","quality_controlled":"1","year":"2025"}]
