--- _id: '46500' abstract: - lang: eng text: The security of Industrial Control Systems is relevant both for reliable production system operations and for high-quality throughput in terms of manufactured products. Security measures are designed, operated and maintained by different roles along product and production system lifecycles. Defense-in-Depth as a paradigm builds upon the assumption that breaches are unavoidable. The paper at hand provides an analysis of roles, corresponding Human Factors and their relevance for data theft and sabotage attacks. The resulting taxonomy is reflected by an example related to Additive Manufacturing. The results assist in both designing and redesigning Industrial Control System as part of an entire production system so that Defense-in-Depth with regard to Human Factors is built in by design. author: - first_name: Jens full_name: Pottebaum, Jens id: '405' last_name: Pottebaum orcid: http://orcid.org/0000-0001-8778-2989 - first_name: Jost full_name: Rossel, Jost id: '58331' last_name: Rossel orcid: 0000-0002-3182-4059 - first_name: Juraj full_name: Somorovsky, Juraj id: '83504' last_name: Somorovsky orcid: 0000-0002-3593-7720 - first_name: Yasemin full_name: Acar, Yasemin id: '94636' last_name: Acar - first_name: René full_name: Fahr, René id: '111' last_name: Fahr - first_name: Patricia full_name: Arias Cabarcos, Patricia id: '92804' last_name: Arias Cabarcos - first_name: Eric full_name: Bodden, Eric id: '59256' last_name: Bodden orcid: 0000-0003-3470-3647 - first_name: Iris full_name: Gräßler, Iris id: '47565' last_name: Gräßler orcid: 0000-0001-5765-971X citation: ama: 'Pottebaum J, Rossel J, Somorovsky J, et al. Re-Envisioning Industrial Control Systems Security by Considering Human Factors as a Core Element of Defense-in-Depth. In: 2023 IEEE European Symposium on Security and Privacy Workshops (EuroS&PW). IEEE; 2023:379-385. doi:10.1109/eurospw59978.2023.00048' apa: Pottebaum, J., Rossel, J., Somorovsky, J., Acar, Y., Fahr, R., Arias Cabarcos, P., Bodden, E., & Gräßler, I. (2023). Re-Envisioning Industrial Control Systems Security by Considering Human Factors as a Core Element of Defense-in-Depth. 2023 IEEE European Symposium on Security and Privacy Workshops (EuroS&PW), 379–385. https://doi.org/10.1109/eurospw59978.2023.00048 bibtex: '@inproceedings{Pottebaum_Rossel_Somorovsky_Acar_Fahr_Arias Cabarcos_Bodden_Gräßler_2023, title={Re-Envisioning Industrial Control Systems Security by Considering Human Factors as a Core Element of Defense-in-Depth}, DOI={10.1109/eurospw59978.2023.00048}, booktitle={2023 IEEE European Symposium on Security and Privacy Workshops (EuroS&PW)}, publisher={IEEE}, author={Pottebaum, Jens and Rossel, Jost and Somorovsky, Juraj and Acar, Yasemin and Fahr, René and Arias Cabarcos, Patricia and Bodden, Eric and Gräßler, Iris}, year={2023}, pages={379–385} }' chicago: Pottebaum, Jens, Jost Rossel, Juraj Somorovsky, Yasemin Acar, René Fahr, Patricia Arias Cabarcos, Eric Bodden, and Iris Gräßler. “Re-Envisioning Industrial Control Systems Security by Considering Human Factors as a Core Element of Defense-in-Depth.” In 2023 IEEE European Symposium on Security and Privacy Workshops (EuroS&PW), 379–85. IEEE, 2023. https://doi.org/10.1109/eurospw59978.2023.00048. ieee: 'J. Pottebaum et al., “Re-Envisioning Industrial Control Systems Security by Considering Human Factors as a Core Element of Defense-in-Depth,” in 2023 IEEE European Symposium on Security and Privacy Workshops (EuroS&PW), Delft, Netherlands, 2023, pp. 379–385, doi: 10.1109/eurospw59978.2023.00048.' mla: Pottebaum, Jens, et al. “Re-Envisioning Industrial Control Systems Security by Considering Human Factors as a Core Element of Defense-in-Depth.” 2023 IEEE European Symposium on Security and Privacy Workshops (EuroS&PW), IEEE, 2023, pp. 379–85, doi:10.1109/eurospw59978.2023.00048. short: 'J. Pottebaum, J. Rossel, J. Somorovsky, Y. Acar, R. Fahr, P. Arias Cabarcos, E. Bodden, I. Gräßler, in: 2023 IEEE European Symposium on Security and Privacy Workshops (EuroS&PW), IEEE, 2023, pp. 379–385.' conference: end_date: 2023-07-07 location: Delft, Netherlands name: 2023 IEEE European Symposium on Security and Privacy Workshops (EuroS&PW) start_date: 2023-07-03 date_created: 2023-08-15T12:21:05Z date_updated: 2025-07-16T11:06:47Z ddc: - '000' department: - _id: '34' - _id: '152' - _id: '76' - _id: '632' - _id: '858' doi: 10.1109/eurospw59978.2023.00048 file: - access_level: closed content_type: application/pdf creator: jrossel date_created: 2024-09-05T13:00:09Z date_updated: 2024-09-05T13:00:09Z file_id: '56077' file_name: Re_envisioning_Industrial_Control_Systems_security.pdf file_size: 197727 relation: main_file file_date_updated: 2024-09-05T13:00:09Z has_accepted_license: '1' keyword: - Defense-in-Depth - Human Factors - Production Engineering - Product Design - Systems Engineering language: - iso: eng main_file_link: - url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10190647 page: 379-385 publication: 2023 IEEE European Symposium on Security and Privacy Workshops (EuroS&PW) publication_status: published publisher: IEEE quality_controlled: '1' status: public title: Re-Envisioning Industrial Control Systems Security by Considering Human Factors as a Core Element of Defense-in-Depth type: conference user_id: '58331' year: '2023' ... --- _id: '48894' abstract: - lang: eng text: Recently different evolutionary computation approaches have been developed that generate sets of high quality diverse solutions for a given optimisation problem. Many studies have considered diversity 1) as a mean to explore niches in behavioural space (quality diversity) or 2) to increase the structural differences of solutions (evolutionary diversity optimisation). In this study, we introduce a co-evolutionary algorithm to simultaneously explore the two spaces for the multi-component traveling thief problem. The results show the capability of the co-evolutionary algorithm to achieve significantly higher diversity compared to the baseline evolutionary diversity algorithms from the literature. author: - first_name: Adel full_name: Nikfarjam, Adel last_name: Nikfarjam - first_name: Aneta full_name: Neumann, Aneta last_name: Neumann - first_name: Jakob full_name: Bossek, Jakob id: '102979' last_name: Bossek orcid: 0000-0002-4121-4668 - first_name: Frank full_name: Neumann, Frank last_name: Neumann citation: ama: 'Nikfarjam A, Neumann A, Bossek J, Neumann F. Co-Evolutionary Diversity Optimisation for the Traveling Thief Problem. In: Rudolph G, Kononova AV, Aguirre H, Kerschke P, Ochoa G, Tu\v sar T, eds. Parallel Problem Solving from Nature (PPSN XVII). Lecture Notes in Computer Science. Springer International Publishing; 2022:237–249. doi:10.1007/978-3-031-14714-2_17' apa: Nikfarjam, A., Neumann, A., Bossek, J., & Neumann, F. (2022). Co-Evolutionary Diversity Optimisation for the Traveling Thief Problem. In G. Rudolph, A. V. Kononova, H. Aguirre, P. Kerschke, G. Ochoa, & T. Tu\v sar (Eds.), Parallel Problem Solving from Nature (PPSN XVII) (pp. 237–249). Springer International Publishing. https://doi.org/10.1007/978-3-031-14714-2_17 bibtex: '@inproceedings{Nikfarjam_Neumann_Bossek_Neumann_2022, place={Cham}, series={Lecture Notes in Computer Science}, title={Co-Evolutionary Diversity Optimisation for the Traveling Thief Problem}, DOI={10.1007/978-3-031-14714-2_17}, booktitle={Parallel Problem Solving from Nature (PPSN XVII)}, publisher={Springer International Publishing}, author={Nikfarjam, Adel and Neumann, Aneta and Bossek, Jakob and Neumann, Frank}, editor={Rudolph, Günter and Kononova, Anna V. and Aguirre, Hernán and Kerschke, Pascal and Ochoa, Gabriela and Tu\v sar, Tea}, year={2022}, pages={237–249}, collection={Lecture Notes in Computer Science} }' chicago: 'Nikfarjam, Adel, Aneta Neumann, Jakob Bossek, and Frank Neumann. “Co-Evolutionary Diversity Optimisation for the Traveling Thief Problem.” In Parallel Problem Solving from Nature (PPSN XVII), edited by Günter Rudolph, Anna V. Kononova, Hernán Aguirre, Pascal Kerschke, Gabriela Ochoa, and Tea Tu\v sar, 237–249. Lecture Notes in Computer Science. Cham: Springer International Publishing, 2022. https://doi.org/10.1007/978-3-031-14714-2_17.' ieee: 'A. Nikfarjam, A. Neumann, J. Bossek, and F. Neumann, “Co-Evolutionary Diversity Optimisation for the Traveling Thief Problem,” in Parallel Problem Solving from Nature (PPSN XVII), 2022, pp. 237–249, doi: 10.1007/978-3-031-14714-2_17.' mla: Nikfarjam, Adel, et al. “Co-Evolutionary Diversity Optimisation for the Traveling Thief Problem.” Parallel Problem Solving from Nature (PPSN XVII), edited by Günter Rudolph et al., Springer International Publishing, 2022, pp. 237–249, doi:10.1007/978-3-031-14714-2_17. short: 'A. Nikfarjam, A. Neumann, J. Bossek, F. Neumann, in: G. Rudolph, A.V. Kononova, H. Aguirre, P. Kerschke, G. Ochoa, T. Tu\v sar (Eds.), Parallel Problem Solving from Nature (PPSN XVII), Springer International Publishing, Cham, 2022, pp. 237–249.' date_created: 2023-11-14T15:59:00Z date_updated: 2023-12-13T10:49:51Z department: - _id: '819' doi: 10.1007/978-3-031-14714-2_17 editor: - first_name: Günter full_name: Rudolph, Günter last_name: Rudolph - first_name: Anna V. full_name: Kononova, Anna V. last_name: Kononova - first_name: Hernán full_name: Aguirre, Hernán last_name: Aguirre - first_name: Pascal full_name: Kerschke, Pascal last_name: Kerschke - first_name: Gabriela full_name: Ochoa, Gabriela last_name: Ochoa - first_name: Tea full_name: Tu\v sar, Tea last_name: Tu\v sar extern: '1' keyword: - Co-evolutionary algorithms - Evolutionary diversity optimisation - Quality diversity - Traveling thief problem language: - iso: eng page: 237–249 place: Cham publication: Parallel Problem Solving from Nature (PPSN XVII) publication_identifier: isbn: - 978-3-031-14714-2 publication_status: published publisher: Springer International Publishing series_title: Lecture Notes in Computer Science status: public title: Co-Evolutionary Diversity Optimisation for the Traveling Thief Problem type: conference user_id: '102979' year: '2022' ... --- _id: '35732' abstract: - lang: eng text: While the Information Systems (IS) discipline has researched digital platforms extensively, the body of knowledge appertaining to platforms still appears fragmented and lacking conceptual consistency. Based on automated text mining and unsupervised machine learning, we collect, analyze, and interpret the IS discipline’s comprehensive research on platforms—comprising 11,049 papers spanning 44 years of research activity. From a cluster analysis concerning platform concepts’ semantically most similar words, we identify six research streams on platforms, each with their own platform terms. Based on interpreting the identified concepts vis-à-vis the extant research and considering a temporal perspective on the concepts’ application, we present a lexicon of platform concepts, to guide further research on platforms in the IS discipline. Researchers and managers can build on our results to position their work appropriately, applying a specific theoretical perspective on platforms in isolation or combining multiple perspectives to study platform phenomena at a more abstract level. article_type: original author: - first_name: Christian full_name: Bartelheimer, Christian id: '49160' last_name: Bartelheimer - first_name: Philipp full_name: zur Heiden, Philipp id: '64394' last_name: zur Heiden - first_name: Hedda full_name: Lüttenberg, Hedda last_name: Lüttenberg - first_name: Daniel full_name: Beverungen, Daniel id: '59677' last_name: Beverungen citation: ama: 'Bartelheimer C, zur Heiden P, Lüttenberg H, Beverungen D. Systematizing the lexicon of platforms in information systems: a data-driven study. Electronic Markets. 2022;32:375-396. doi:10.1007/s12525-022-00530-6' apa: 'Bartelheimer, C., zur Heiden, P., Lüttenberg, H., & Beverungen, D. (2022). Systematizing the lexicon of platforms in information systems: a data-driven study. Electronic Markets, 32, 375–396. https://doi.org/10.1007/s12525-022-00530-6' bibtex: '@article{Bartelheimer_zur Heiden_Lüttenberg_Beverungen_2022, title={Systematizing the lexicon of platforms in information systems: a data-driven study}, volume={32}, DOI={10.1007/s12525-022-00530-6}, journal={Electronic Markets}, publisher={Springer Science and Business Media LLC}, author={Bartelheimer, Christian and zur Heiden, Philipp and Lüttenberg, Hedda and Beverungen, Daniel}, year={2022}, pages={375–396} }' chicago: 'Bartelheimer, Christian, Philipp zur Heiden, Hedda Lüttenberg, and Daniel Beverungen. “Systematizing the Lexicon of Platforms in Information Systems: A Data-Driven Study.” Electronic Markets 32 (2022): 375–96. https://doi.org/10.1007/s12525-022-00530-6.' ieee: 'C. Bartelheimer, P. zur Heiden, H. Lüttenberg, and D. Beverungen, “Systematizing the lexicon of platforms in information systems: a data-driven study,” Electronic Markets, vol. 32, pp. 375–396, 2022, doi: 10.1007/s12525-022-00530-6.' mla: 'Bartelheimer, Christian, et al. “Systematizing the Lexicon of Platforms in Information Systems: A Data-Driven Study.” Electronic Markets, vol. 32, Springer Science and Business Media LLC, 2022, pp. 375–96, doi:10.1007/s12525-022-00530-6.' short: C. Bartelheimer, P. zur Heiden, H. Lüttenberg, D. Beverungen, Electronic Markets 32 (2022) 375–396. date_created: 2023-01-10T10:00:55Z date_updated: 2024-04-18T12:40:34Z ddc: - '380' department: - _id: '526' doi: 10.1007/s12525-022-00530-6 file: - access_level: closed content_type: application/pdf creator: dabe date_created: 2024-04-18T12:39:00Z date_updated: 2024-04-18T12:39:00Z file_id: '53573' file_name: EM - Lexicon of Platform Terms.pdf file_size: 1262427 relation: main_file success: 1 file_date_updated: 2024-04-18T12:39:00Z has_accepted_license: '1' intvolume: ' 32' jel: - L86 keyword: - Platform - Text mining - Machine learning - Data communications - Interpretive research - Systems design and implementation language: - iso: eng page: 375-396 publication: Electronic Markets publication_identifier: issn: - 1019-6781 - 1422-8890 publication_status: published publisher: Springer Science and Business Media LLC quality_controlled: '1' status: public title: 'Systematizing the lexicon of platforms in information systems: a data-driven study' type: journal_article user_id: '59677' volume: 32 year: '2022' ... --- _id: '36866' abstract: - lang: ger text: "Die additive Fertigung bietet die Möglichkeit, digitale Prototypen dank der\r\nBesonderheit der werkzeuglosen Fertigung schnellstmöglich in reale Strukturen\r\numzusetzen. Dieses Verfahren kann jedoch nur dann mit optimaler Geschwindigkeit\r\ngenutzt werden, wenn Engpässe wirksam vermieden werden können. Einer dieser\r\nEngpässe ist der Konstruktionsprozess. Gerade im Bereich der additiven Fertigung\r\nsind in letzter Zeit immer leistungsfähigere Softwarelösungen erschienen, die das\r\nDesign für die additive Fertigung, einschließlich der meisten Computer-Aided-Design\r\n(CAD)-Aufgaben, beschleunigen. In vielen Bereichen wird daher bereits versucht, so\r\nviele Schritte wie möglich zu automatisieren, nicht selten unter Verwendung\r\nneuronaler Netze und künstlicher Intelligenz. Dieser Beitrag zeigt am Beispiel einer\r\nautomatisierten Strukturoptimierung eines Stuhls, warum das Nutzen neuronaler\r\nNetze im Konstruktionsprozess sinnvoll ist, um die Bereiche der konventionellen\r\nTopologieoptimierung und des Generative Design weiter zu verknüpfen und somit die\r\nProduktentwicklungszeit zu reduzieren." author: - first_name: Manuel full_name: Ott, Manuel id: '44204' last_name: Ott - first_name: Niclas full_name: Meihöfener, Niclas last_name: Meihöfener - first_name: Rainer full_name: Koch, Rainer last_name: Koch citation: ama: 'Ott M, Meihöfener N, Koch R. Neuronale Netze in der Konstruktion zur Ausschöpfung der Potentiale additiver Fertigungstechnologien. In: Deutscher Verband für Materialforschung und -prüfung e.V. , ed. Bericht 407 - 7. Tagung des DVM-Arbeitskreises Additiv gefertigte Bauteile und Strukturen. Vol 7. Bericht 407 - 7. Tagung des DVM-Arbeitskreises Additiv gefertigte Bauteile und Strukturen. ; 2022:91-106. doi:10.48447/ADD-2022-014' apa: Ott, M., Meihöfener, N., & Koch, R. (2022). Neuronale Netze in der Konstruktion zur Ausschöpfung der Potentiale additiver Fertigungstechnologien. In Deutscher Verband für Materialforschung und -prüfung e.V. (Ed.), Bericht 407 - 7. Tagung des DVM-Arbeitskreises Additiv gefertigte Bauteile und Strukturen (Vol. 7, pp. 91–106). https://doi.org/10.48447/ADD-2022-014 bibtex: '@inproceedings{Ott_Meihöfener_Koch_2022, place={Berlin}, series={Bericht 407 - 7. Tagung des DVM-Arbeitskreises Additiv gefertigte Bauteile und Strukturen}, title={Neuronale Netze in der Konstruktion zur Ausschöpfung der Potentiale additiver Fertigungstechnologien}, volume={7}, DOI={10.48447/ADD-2022-014}, booktitle={Bericht 407 - 7. Tagung des DVM-Arbeitskreises Additiv gefertigte Bauteile und Strukturen}, author={Ott, Manuel and Meihöfener, Niclas and Koch, Rainer}, editor={Deutscher Verband für Materialforschung und -prüfung e.V. }, year={2022}, pages={91–106}, collection={Bericht 407 - 7. Tagung des DVM-Arbeitskreises Additiv gefertigte Bauteile und Strukturen} }' chicago: Ott, Manuel, Niclas Meihöfener, and Rainer Koch. “Neuronale Netze in der Konstruktion zur Ausschöpfung der Potentiale additiver Fertigungstechnologien.” In Bericht 407 - 7. Tagung des DVM-Arbeitskreises Additiv gefertigte Bauteile und Strukturen, edited by Deutscher Verband für Materialforschung und -prüfung e.V. , 7:91–106. Bericht 407 - 7. Tagung des DVM-Arbeitskreises Additiv gefertigte Bauteile und Strukturen. Berlin, 2022. https://doi.org/10.48447/ADD-2022-014. ieee: 'M. Ott, N. Meihöfener, and R. Koch, “Neuronale Netze in der Konstruktion zur Ausschöpfung der Potentiale additiver Fertigungstechnologien,” in Bericht 407 - 7. Tagung des DVM-Arbeitskreises Additiv gefertigte Bauteile und Strukturen, Berlin, 2022, vol. 7, pp. 91–106, doi: 10.48447/ADD-2022-014.' mla: Ott, Manuel, et al. “Neuronale Netze in der Konstruktion zur Ausschöpfung der Potentiale additiver Fertigungstechnologien.” Bericht 407 - 7. Tagung des DVM-Arbeitskreises Additiv gefertigte Bauteile und Strukturen, edited by Deutscher Verband für Materialforschung und -prüfung e.V. , vol. 7, 2022, pp. 91–106, doi:10.48447/ADD-2022-014. short: 'M. Ott, N. Meihöfener, R. Koch, in: Deutscher Verband für Materialforschung und -prüfung e.V. (Ed.), Bericht 407 - 7. Tagung des DVM-Arbeitskreises Additiv gefertigte Bauteile und Strukturen, Berlin, 2022, pp. 91–106.' conference: end_date: 2022-11-09 location: Berlin name: 7. Tagung des DVM-Arbeitskreises Additiv gefertigte Bauteile und Strukturen start_date: 2022-11-08 corporate_editor: - 'Deutscher Verband für Materialforschung und -prüfung e.V. ' date_created: 2023-01-16T08:42:28Z date_updated: 2023-01-18T08:52:56Z department: - _id: '741' - _id: '144' doi: 10.48447/ADD-2022-014 intvolume: ' 7' jel: - L74 keyword: - Künstliche Intelligenz - Neuronale Netze - 3D-Druck - Design for Additive Manufacturing language: - iso: ger page: 91-106 place: Berlin publication: Bericht 407 - 7. Tagung des DVM-Arbeitskreises Additiv gefertigte Bauteile und Strukturen publication_status: published series_title: Bericht 407 - 7. Tagung des DVM-Arbeitskreises Additiv gefertigte Bauteile und Strukturen status: public title: Neuronale Netze in der Konstruktion zur Ausschöpfung der Potentiale additiver Fertigungstechnologien type: conference user_id: '44204' volume: 7 year: '2022' ... --- _id: '32309' abstract: - lang: eng text: "Due to the increasing influences of a VUCA world, design thinking workshops have been established as a standard technique to build solutions according to uncertain customer needs. Concerning the ongoing pandemic and rising development of solutions across organizations, more and more workshops were conducted online with software support. However, existing software tools insufficiently address the different workshop situations in terms of the process (i.e., fixed tasks to conduct), the place (e.g., static online whiteboards), and people (i.e., synchronous working of all stakeholders).\r\nTherefore, we propose a design science study to develop a situation-specific software support that can be configured with flexible development processes, different places, and task-related people. Based on practical experience in existing research projects, we derive the initial design requirements and map them to a set of design principles. Out of that, we design a concept with its implementation as a software tool and point out open challenges. " author: - first_name: Sebastian full_name: Gottschalk, Sebastian id: '47208' last_name: Gottschalk - first_name: Enes full_name: Yigitbas, Enes id: '8447' last_name: Yigitbas orcid: 0000-0002-5967-833X - first_name: Alexander full_name: Nowosad, Alexander last_name: Nowosad - first_name: Gregor full_name: Engels, Gregor id: '107' last_name: Engels citation: ama: 'Gottschalk S, Yigitbas E, Nowosad A, Engels G. Towards Situation-specific Software Support for Cross-organizational Design Thinking Processes. In: Proceedings of the 5th International Workshop on Software-Intensive Business (IWSiB’22) . ACM; 2022.' apa: Gottschalk, S., Yigitbas, E., Nowosad, A., & Engels, G. (2022). Towards Situation-specific Software Support for Cross-organizational Design Thinking Processes. Proceedings of the 5th International Workshop on Software-Intensive Business (IWSiB’22) . bibtex: '@inproceedings{Gottschalk_Yigitbas_Nowosad_Engels_2022, title={Towards Situation-specific Software Support for Cross-organizational Design Thinking Processes}, booktitle={Proceedings of the 5th International Workshop on Software-intensive Business (IWSiB’22) }, publisher={ACM}, author={Gottschalk, Sebastian and Yigitbas, Enes and Nowosad, Alexander and Engels, Gregor}, year={2022} }' chicago: Gottschalk, Sebastian, Enes Yigitbas, Alexander Nowosad, and Gregor Engels. “Towards Situation-Specific Software Support for Cross-Organizational Design Thinking Processes.” In Proceedings of the 5th International Workshop on Software-Intensive Business (IWSiB’22) . ACM, 2022. ieee: S. Gottschalk, E. Yigitbas, A. Nowosad, and G. Engels, “Towards Situation-specific Software Support for Cross-organizational Design Thinking Processes,” 2022. mla: Gottschalk, Sebastian, et al. “Towards Situation-Specific Software Support for Cross-Organizational Design Thinking Processes.” Proceedings of the 5th International Workshop on Software-Intensive Business (IWSiB’22) , ACM, 2022. short: 'S. Gottschalk, E. Yigitbas, A. Nowosad, G. Engels, in: Proceedings of the 5th International Workshop on Software-Intensive Business (IWSiB’22) , ACM, 2022.' date_created: 2022-07-01T08:14:16Z date_updated: 2023-03-14T09:59:05Z department: - _id: '66' - _id: '534' keyword: - design thinking - situation-specific - cross-organizational - software support language: - iso: eng project: - _id: '1' name: 'SFB 901: SFB 901' - _id: '4' name: 'SFB 901 - C: SFB 901 - Project Area C' - _id: '17' name: 'SFB 901 - C5: SFB 901 - Subproject C5' publication: 'Proceedings of the 5th International Workshop on Software-intensive Business (IWSiB''22) ' publisher: ACM status: public title: Towards Situation-specific Software Support for Cross-organizational Design Thinking Processes type: conference user_id: '8447' year: '2022' ... --- _id: '31691' abstract: - lang: eng text: Sustainable product engineering is becoming increasingly important. This includes the development of environmentally friendly products and the design for recycling. In this paper a holistic method for the assessment of solution alternatives is presented, in which the stakeholder perspectives along the generic product lifecycle are taken into account. Finally, a new visualization is presented. By visualizing the results in the integrated sustainability triangle, decision-makers in product development can holistically assess the sustainability of the solution alternatives. author: - first_name: Iris full_name: Gräßler, Iris id: '47565' last_name: Gräßler orcid: 0000-0001-5765-971X - first_name: Philipp full_name: Hesse, Philipp id: '60633' last_name: Hesse citation: ama: Gräßler I, Hesse P. Approach to Sustainability-Based Assessment of Solution Alternatives in Early Stages of Product Engineering. Proceedings of the Design Society. 2022;2:1001-1010. doi:10.1017/pds.2022.102 apa: Gräßler, I., & Hesse, P. (2022). Approach to Sustainability-Based Assessment of Solution Alternatives in Early Stages of Product Engineering. Proceedings of the Design Society, 2, 1001–1010. https://doi.org/10.1017/pds.2022.102 bibtex: '@article{Gräßler_Hesse_2022, title={Approach to Sustainability-Based Assessment of Solution Alternatives in Early Stages of Product Engineering}, volume={2}, DOI={10.1017/pds.2022.102}, journal={Proceedings of the Design Society}, publisher={Cambridge University Press (CUP)}, author={Gräßler, Iris and Hesse, Philipp}, year={2022}, pages={1001–1010} }' chicago: 'Gräßler, Iris, and Philipp Hesse. “Approach to Sustainability-Based Assessment of Solution Alternatives in Early Stages of Product Engineering.” Proceedings of the Design Society 2 (2022): 1001–10. https://doi.org/10.1017/pds.2022.102.' ieee: 'I. Gräßler and P. Hesse, “Approach to Sustainability-Based Assessment of Solution Alternatives in Early Stages of Product Engineering,” Proceedings of the Design Society, vol. 2, pp. 1001–1010, 2022, doi: 10.1017/pds.2022.102.' mla: Gräßler, Iris, and Philipp Hesse. “Approach to Sustainability-Based Assessment of Solution Alternatives in Early Stages of Product Engineering.” Proceedings of the Design Society, vol. 2, Cambridge University Press (CUP), 2022, pp. 1001–10, doi:10.1017/pds.2022.102. short: I. Gräßler, P. Hesse, Proceedings of the Design Society 2 (2022) 1001–1010. conference: end_date: 27.05.2022 name: International Design Conference (Design 2022) start_date: 24.05.2022 date_created: 2022-06-07T05:58:07Z date_updated: 2023-05-10T07:25:35Z department: - _id: '9' - _id: '152' - _id: '321' doi: 10.1017/pds.2022.102 intvolume: ' 2' keyword: - sustainability - decision making - generic product lifecycle - design analysis - ecodesign language: - iso: eng page: 1001-1010 publication: Proceedings of the Design Society publication_identifier: issn: - 2732-527X publication_status: published publisher: Cambridge University Press (CUP) quality_controlled: '1' status: public title: Approach to Sustainability-Based Assessment of Solution Alternatives in Early Stages of Product Engineering type: journal_article user_id: '60633' volume: 2 year: '2022' ... --- _id: '33684' article_number: '102920' author: - first_name: Robert full_name: Schade, Robert id: '75963' last_name: Schade orcid: 0000-0002-6268-539 - first_name: Tobias full_name: Kenter, Tobias id: '3145' last_name: Kenter - first_name: Hossam full_name: Elgabarty, Hossam id: '60250' last_name: Elgabarty orcid: 0000-0002-4945-1481 - first_name: Michael full_name: Lass, Michael id: '24135' last_name: Lass orcid: 0000-0002-5708-7632 - first_name: Ole full_name: Schütt, Ole last_name: Schütt - first_name: Alfio full_name: Lazzaro, Alfio last_name: Lazzaro - first_name: Hans full_name: Pabst, Hans last_name: Pabst - first_name: Stephan full_name: Mohr, Stephan last_name: Mohr - first_name: Jürg full_name: Hutter, Jürg last_name: Hutter - first_name: Thomas full_name: Kühne, Thomas id: '49079' last_name: Kühne - first_name: Christian full_name: Plessl, Christian id: '16153' last_name: Plessl orcid: 0000-0001-5728-9982 citation: ama: Schade R, Kenter T, Elgabarty H, et al. Towards electronic structure-based ab-initio molecular dynamics simulations with hundreds of millions of atoms. Parallel Computing. 2022;111. doi:10.1016/j.parco.2022.102920 apa: Schade, R., Kenter, T., Elgabarty, H., Lass, M., Schütt, O., Lazzaro, A., Pabst, H., Mohr, S., Hutter, J., Kühne, T., & Plessl, C. (2022). Towards electronic structure-based ab-initio molecular dynamics simulations with hundreds of millions of atoms. Parallel Computing, 111, Article 102920. https://doi.org/10.1016/j.parco.2022.102920 bibtex: '@article{Schade_Kenter_Elgabarty_Lass_Schütt_Lazzaro_Pabst_Mohr_Hutter_Kühne_et al._2022, title={Towards electronic structure-based ab-initio molecular dynamics simulations with hundreds of millions of atoms}, volume={111}, DOI={10.1016/j.parco.2022.102920}, number={102920}, journal={Parallel Computing}, publisher={Elsevier BV}, author={Schade, Robert and Kenter, Tobias and Elgabarty, Hossam and Lass, Michael and Schütt, Ole and Lazzaro, Alfio and Pabst, Hans and Mohr, Stephan and Hutter, Jürg and Kühne, Thomas and et al.}, year={2022} }' chicago: Schade, Robert, Tobias Kenter, Hossam Elgabarty, Michael Lass, Ole Schütt, Alfio Lazzaro, Hans Pabst, et al. “Towards Electronic Structure-Based Ab-Initio Molecular Dynamics Simulations with Hundreds of Millions of Atoms.” Parallel Computing 111 (2022). https://doi.org/10.1016/j.parco.2022.102920. ieee: 'R. Schade et al., “Towards electronic structure-based ab-initio molecular dynamics simulations with hundreds of millions of atoms,” Parallel Computing, vol. 111, Art. no. 102920, 2022, doi: 10.1016/j.parco.2022.102920.' mla: Schade, Robert, et al. “Towards Electronic Structure-Based Ab-Initio Molecular Dynamics Simulations with Hundreds of Millions of Atoms.” Parallel Computing, vol. 111, 102920, Elsevier BV, 2022, doi:10.1016/j.parco.2022.102920. short: R. Schade, T. Kenter, H. Elgabarty, M. Lass, O. Schütt, A. Lazzaro, H. Pabst, S. Mohr, J. Hutter, T. Kühne, C. Plessl, Parallel Computing 111 (2022). date_created: 2022-10-11T08:17:02Z date_updated: 2023-08-02T15:03:55Z department: - _id: '613' - _id: '27' - _id: '518' doi: 10.1016/j.parco.2022.102920 intvolume: ' 111' keyword: - Artificial Intelligence - Computer Graphics and Computer-Aided Design - Computer Networks and Communications - Hardware and Architecture - Theoretical Computer Science - Software language: - iso: eng main_file_link: - open_access: '1' url: https://www.sciencedirect.com/science/article/pii/S0167819122000242 oa: '1' project: - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: Parallel Computing publication_identifier: issn: - 0167-8191 publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: Towards electronic structure-based ab-initio molecular dynamics simulations with hundreds of millions of atoms type: journal_article user_id: '75963' volume: 111 year: '2022' ... --- _id: '29803' abstract: - lang: eng text: "Ultrasonic wire bonding is a solid-state joining process used to form electrical interconnections in micro and\r\npower electronics and batteries. A high frequency oscillation causes a metallurgical bond deformation in\r\nthe contact area. Due to the numerous physical influencing factors, it is very difficult to accurately capture\r\nthis process in a model. Therefore, our goal is to determine a suitable feed-forward control strategy for the\r\nbonding process even without detailed model knowledge. We propose the use of batch constrained Bayesian\r\noptimization for the control design. Hence, Bayesian optimization is precisely adapted to the application of\r\nbonding: the constraint is used to check one quality feature of the process and the use of batches leads to\r\nmore efficient experiments. Our approach is suitable to determine a feed-forward control for the bonding\r\nprocess that provides very high quality bonds without using a physical model. We also show that the quality\r\nof the Bayesian optimization based control outperforms random search as well as manual search by a user.\r\nUsing a simple prior knowledge model derived from data further improves the quality of the connection.\r\nThe Bayesian optimization approach offers the possibility to perform a sensitivity analysis of the control\r\nparameters, which allows to evaluate the influence of each control parameter on the bond quality. In summary,\r\nBayesian optimization applied to the bonding process provides an excellent opportunity to develop a feedforward\r\ncontrol without full modeling of the underlying physical processes." author: - first_name: Michael full_name: Hesse, Michael id: '29222' last_name: Hesse - first_name: Matthias full_name: Hunstig, Matthias last_name: Hunstig - first_name: Julia full_name: Timmermann, Julia id: '15402' last_name: Timmermann - first_name: Ansgar full_name: Trächtler, Ansgar id: '552' last_name: Trächtler citation: ama: 'Hesse M, Hunstig M, Timmermann J, Trächtler A. Batch Constrained Bayesian Optimization for UltrasonicWire Bonding Feed-forward Control Design. In: Proceedings of the 11th International Conference on Pattern Recognition Applications and Methods (ICPRAM). ; 2022:383-394.' apa: Hesse, M., Hunstig, M., Timmermann, J., & Trächtler, A. (2022). Batch Constrained Bayesian Optimization for UltrasonicWire Bonding Feed-forward Control Design. Proceedings of the 11th International Conference on Pattern Recognition Applications and Methods (ICPRAM), 383–394. bibtex: '@inproceedings{Hesse_Hunstig_Timmermann_Trächtler_2022, title={Batch Constrained Bayesian Optimization for UltrasonicWire Bonding Feed-forward Control Design}, booktitle={Proceedings of the 11th International Conference on Pattern Recognition Applications and Methods (ICPRAM)}, author={Hesse, Michael and Hunstig, Matthias and Timmermann, Julia and Trächtler, Ansgar}, year={2022}, pages={383–394} }' chicago: Hesse, Michael, Matthias Hunstig, Julia Timmermann, and Ansgar Trächtler. “Batch Constrained Bayesian Optimization for UltrasonicWire Bonding Feed-Forward Control Design.” In Proceedings of the 11th International Conference on Pattern Recognition Applications and Methods (ICPRAM), 383–94, 2022. ieee: M. Hesse, M. Hunstig, J. Timmermann, and A. Trächtler, “Batch Constrained Bayesian Optimization for UltrasonicWire Bonding Feed-forward Control Design,” in Proceedings of the 11th International Conference on Pattern Recognition Applications and Methods (ICPRAM), Online, 2022, pp. 383–394. mla: Hesse, Michael, et al. “Batch Constrained Bayesian Optimization for UltrasonicWire Bonding Feed-Forward Control Design.” Proceedings of the 11th International Conference on Pattern Recognition Applications and Methods (ICPRAM), 2022, pp. 383–94. short: 'M. Hesse, M. Hunstig, J. Timmermann, A. Trächtler, in: Proceedings of the 11th International Conference on Pattern Recognition Applications and Methods (ICPRAM), 2022, pp. 383–394.' conference: end_date: 2022-02-05 location: Online name: 11th International Conference on Pattern Recognition Applications and Methods start_date: 2022-02-03 date_created: 2022-02-09T12:50:25Z date_updated: 2024-11-13T08:44:17Z department: - _id: '153' - _id: '880' keyword: - Bayesian optimization - Wire bonding - Feed-forward control - model-free design language: - iso: eng page: 383-394 publication: Proceedings of the 11th International Conference on Pattern Recognition Applications and Methods (ICPRAM) publication_identifier: isbn: - 978-989-758-549-4 quality_controlled: '1' status: public title: Batch Constrained Bayesian Optimization for UltrasonicWire Bonding Feed-forward Control Design type: conference user_id: '82875' year: '2022' ... --- _id: '22309' abstract: - lang: eng text: Approximate computing (AC) has acquired significant maturity in recent years as a promising approach to obtain energy and area-efficient hardware. Automated approximate accelerator synthesis involves a great deal of complexity on the size of design space which exponentially grows with the number of possible approximations. Design space exploration of approximate accelerator synthesis is usually targeted via heuristic-based search methods. The majority of existing frameworks prune a large part of the design space using a greedy-based approach to keep the problem tractable. Therefore, they result in inferior solutions since many potential solutions are neglected in the pruning process without the possibility of backtracking of removed approximate instances. In this paper, we address the aforementioned issue by adopting Monte Carlo Tree Search (MCTS), as an efficient stochastic learning-based search algorithm, in the context of automated synthesis of approximate accelerators. This enables the synthesis frameworks to deeply subsamples the design space of approximate accelerator synthesis toward most promising approximate instances based on the required performance goals, i.e., power consumption, area, or/and delay. We investigated the challenges of providing an efficient open-source framework that benefits analytical and search-based approximation techniques simultaneously to both speed up the synthesis runtime and improve the quality of obtained results. Besides, we studied the utilization of machine learning algorithms to improve the performance of several critical steps, i.e., accelerator quality testing, in the synthesis framework. The proposed framework can help the community to rapidly generate efficient approximate accelerators in a reasonable runtime. author: - first_name: Muhammad full_name: Awais, Muhammad id: '64665' last_name: Awais orcid: https://orcid.org/0000-0003-4148-2969 - first_name: Marco full_name: Platzner, Marco last_name: Platzner citation: ama: 'Awais M, Platzner M. MCTS-Based Synthesis Towards Efficient Approximate Accelerators. In: Proceedings of IEEE Computer Society Annual Symposium on VLSI. IEEE; 2021:384-389.' apa: Awais, M., & Platzner, M. (2021). MCTS-Based Synthesis Towards Efficient Approximate Accelerators. Proceedings of IEEE Computer Society Annual Symposium on VLSI, 384–389. bibtex: '@inproceedings{Awais_Platzner_2021, title={MCTS-Based Synthesis Towards Efficient Approximate Accelerators}, booktitle={Proceedings of IEEE Computer Society Annual Symposium on VLSI}, publisher={IEEE}, author={Awais, Muhammad and Platzner, Marco}, year={2021}, pages={384–389} }' chicago: Awais, Muhammad, and Marco Platzner. “MCTS-Based Synthesis Towards Efficient Approximate Accelerators.” In Proceedings of IEEE Computer Society Annual Symposium on VLSI, 384–89. IEEE, 2021. ieee: M. Awais and M. Platzner, “MCTS-Based Synthesis Towards Efficient Approximate Accelerators,” in Proceedings of IEEE Computer Society Annual Symposium on VLSI, Tampa, Florida USA (Virtual), 2021, pp. 384–389. mla: Awais, Muhammad, and Marco Platzner. “MCTS-Based Synthesis Towards Efficient Approximate Accelerators.” Proceedings of IEEE Computer Society Annual Symposium on VLSI, IEEE, 2021, pp. 384–89. short: 'M. Awais, M. Platzner, in: Proceedings of IEEE Computer Society Annual Symposium on VLSI, IEEE, 2021, pp. 384–389.' conference: end_date: 2021-07-09 location: Tampa, Florida USA (Virtual) name: IEEE Computer Society Annual Symposium on VLSI start_date: 2021-07-07 date_created: 2021-06-14T14:05:17Z date_updated: 2022-01-06T06:55:31Z department: - _id: '78' keyword: - Approximate computing - Design space exploration - Accelerator synthesis language: - iso: eng page: 384-389 publication: Proceedings of IEEE Computer Society Annual Symposium on VLSI publisher: IEEE status: public title: MCTS-Based Synthesis Towards Efficient Approximate Accelerators type: conference user_id: '64665' year: '2021' ... --- _id: '21727' abstract: - lang: eng text: 'Platform-based business models underlie the success of many of today’s largest, fastest-growing, and most disruptive companies. Despite the success of prominent examples, such as Uber and Airbnb, creating a profitable platform ecosystem presents a key challenge for many companies across all industries. Although research provides knowledge about platforms’ different value drivers (e.g., network effects), companies that seek to transform their current business model into a platform-based one lack an artifact to reduce knowledge boundaries, collaborate effectively, and cope with the complexities and dynamics of platform ecosystems. We address this challenge by developing two artifacts and combining research from variability modeling, business model dependencies, and system dynamics. This paper presents a design science research approach to develop the platform ecosystem modeling language and the platform ecosystem development tool that support researcher and practitioner by visualizing and simulating platform ecosystems. ' author: - first_name: Christian full_name: Vorbohle, Christian id: '29951' last_name: Vorbohle - first_name: Sebastian full_name: Gottschalk, Sebastian id: '47208' last_name: Gottschalk citation: ama: 'Vorbohle C, Gottschalk S. Towards Visualizing and Simulating Business Models in Dynamic Platform Ecosystems . In: Proceedings of the 29th European Conference on Information Systems (ECIS). AIS.' apa: 'Vorbohle, C., & Gottschalk, S. (n.d.). Towards Visualizing and Simulating Business Models in Dynamic Platform Ecosystems . In Proceedings of the 29th European Conference on Information Systems (ECIS). Virtual Conference/Workshop: AIS.' bibtex: '@inproceedings{Vorbohle_Gottschalk, title={Towards Visualizing and Simulating Business Models in Dynamic Platform Ecosystems }, booktitle={Proceedings of the 29th European Conference on Information Systems (ECIS)}, publisher={AIS}, author={Vorbohle, Christian and Gottschalk, Sebastian} }' chicago: Vorbohle, Christian, and Sebastian Gottschalk. “Towards Visualizing and Simulating Business Models in Dynamic Platform Ecosystems .” In Proceedings of the 29th European Conference on Information Systems (ECIS). AIS, n.d. ieee: C. Vorbohle and S. Gottschalk, “Towards Visualizing and Simulating Business Models in Dynamic Platform Ecosystems ,” in Proceedings of the 29th European Conference on Information Systems (ECIS), Virtual Conference/Workshop. mla: Vorbohle, Christian, and Sebastian Gottschalk. “Towards Visualizing and Simulating Business Models in Dynamic Platform Ecosystems .” Proceedings of the 29th European Conference on Information Systems (ECIS), AIS. short: 'C. Vorbohle, S. Gottschalk, in: Proceedings of the 29th European Conference on Information Systems (ECIS), AIS, n.d.' conference: location: Virtual Conference/Workshop name: 29th European Conference on Information Systems (ECIS) date_created: 2021-04-23T13:38:54Z date_updated: 2022-01-06T06:55:12Z department: - _id: '66' - _id: '534' - _id: '276' keyword: - Platform Ecosystems - Platform Ecosystem Modeling Language - Platform Ecosystem Development Tool - Business Models - Design Science language: - iso: eng project: - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '17' name: SFB 901 - Subproject C5 publication: Proceedings of the 29th European Conference on Information Systems (ECIS) publication_status: accepted publisher: AIS status: public title: 'Towards Visualizing and Simulating Business Models in Dynamic Platform Ecosystems ' type: conference user_id: '47208' year: '2021' ... --- _id: '28683' abstract: - lang: ger text: "In den letzten Jahren haben sich Software-Ökosysteme als neue, erfolgreiche Geschäftsform etabliert. Unternehmen agieren hierbei als Anbieter von Software-Plattformen, auf denen Drittanbieter Softwarelösungen für den Markt anbieten können. Etablierte Beispiele sind hierbei sogenannte App-Stores, die z.B. von Google oder Apple angeboten werden.\r\n\r\nBeim Aufbau von Software-Ökosystemen müssen vom Plattformanbieter viele architektonische Entwurfsentscheidungen getroffen werden. Bisher gibt es keine Architekturrichtlinien und -werkzeuge, die den Entwurf einer Ökosystemarchitektur unterstützen. Dadurch fehlt hier systematisches, wiederverwendbares Wissen. Plattformanbieter müssen auf ad-hoc Entscheidungen zurückgreifen. Dies kann dann zu Problemen im Betrieb der Software-Plattformen führen, zu erhöhten Ausfallrisiken und Mehrkosten.\r\n\r\nDer Mangel an Architekturwissen manifestiert sich konkret in zwei Gruppen von Herausforderungen: Erstens fehlt eine Wissensbasis zu Architekturalternativen und zweitens fehlt es an methodischem Wissen zu Entwicklung und Betrieb von Software-Ökosystemen. Eine Architekturwissensbasis würde Orientierungshilfen zu den Bestandteilen von Software-Ökosystemen und deren Abhängigkeiten geben, während methodisches Wissen die Erstellung dieser Systeme erleichtern würde.\r\n\r\nIn der Dissertation werden diese Herausforderungen durch die Entwicklung des Frameworks SecoArc für die Modellierung von Software-Ökosystemen angegangen. Der Beitrag der Dissertation ist zweifach: \r\n1.\tDas SecoArc-Framework umfasst eine Architekturwissensbasis, die wiederverwendbare Architekturentwurfsentscheidungen\r\nvon Software-Ökosystemen enthält. Die Wissensbasis wurde entwickelt, indem das Architekturwissen bestehender Ökosysteme sowie aus existierender Fachliteratur ermittelt wurde und in einer Produktlinie für Software-Ökosysteme konsolidiert wurde. Die Produktlinie umfasst architektonische Gemeinsamkeiten und Variabilitäten von Software-Ökosystemen. \r\n2.\tDas SecoArc-Framework liefert methodisches Wissen, um die Ökosystemarchitektur in Modellen zu entwerfen und zu analysieren. Dieses Wissen wurde entwickelt, indem drei Architekturmuster identifiziert wurden. Jedes Muster erfasst unterschiedliche Beziehungen zwischen architektonischen Entwurfsentscheidungen zu den Qualitätsmerkmalen einer Ökosystemgesundheit und der Erreichung von Geschäftszielen. \r\n\r\nDie Architekturmuster und die Produktlinie wurden dazu genutzt, ein Modellierungsframework zu entwickeln und in Form eines Prototypen umzusetzen, welches einen Entwurfsprozess, eine Modellierungssprache und eine Architekturanalysetechnik umfasst. Es erleichtert das Modellieren, Analysieren und Vergleichen von Ökosystemarchitekturen.\r\n\r\nDie Ergebnisse der Dissertation wurden im Rahmen von zwei Studien evaluiert. In der ersten Validierungsstudie wurden das Framework sowie der Prototyp verwendet, um zwei alternative Ökosystemarchitekturen zu entwerfen und zu analysieren. In der zweiten Studie wurde eine Analyse von existierenden Ökosystemen basierend auf den architektonischen Variabilitäten des Frameworks durchgeführt." author: - first_name: Bahar full_name: Schwichtenberg, Bahar id: '36399' last_name: Schwichtenberg citation: ama: Schwichtenberg B. Modeling and Analyzing Software Ecosystems.; 2021. doi:10.17619/UNIPB/1-1270 apa: Schwichtenberg, B. (2021). Modeling and Analyzing Software Ecosystems. https://doi.org/10.17619/UNIPB/1-1270 bibtex: '@book{Schwichtenberg_2021, title={Modeling and Analyzing Software Ecosystems}, DOI={10.17619/UNIPB/1-1270 }, author={Schwichtenberg, Bahar}, year={2021} }' chicago: Schwichtenberg, Bahar. Modeling and Analyzing Software Ecosystems, 2021. https://doi.org/10.17619/UNIPB/1-1270 . ieee: B. Schwichtenberg, Modeling and Analyzing Software Ecosystems. 2021. mla: Schwichtenberg, Bahar. Modeling and Analyzing Software Ecosystems. 2021, doi:10.17619/UNIPB/1-1270 . short: B. Schwichtenberg, Modeling and Analyzing Software Ecosystems, 2021. date_created: 2021-12-13T07:20:33Z date_updated: 2022-12-30T22:15:37Z ddc: - '000' department: - _id: '66' doi: '10.17619/UNIPB/1-1270 ' file: - access_level: closed content_type: application/pdf creator: bahareh date_created: 2022-12-30T22:15:15Z date_updated: 2022-12-30T22:15:15Z file_id: '35069' file_name: Bahar_Schwichtenberg_Thesis.pdf file_size: 9125342 relation: main_file success: 1 file_date_updated: 2022-12-30T22:15:15Z has_accepted_license: '1' keyword: - Enterprise Architecture - Architectural Design Decisions - Open Platforms language: - iso: eng project: - _id: '4' name: SFB 901 - Project Area C - _id: '17' name: SFB 901 - Subproject C5 - _id: '1' name: 'SFB 901: SFB 901' status: public supervisor: - first_name: Gregor full_name: Engels, Gregor id: '107' last_name: Engels title: Modeling and Analyzing Software Ecosystems type: dissertation user_id: '36399' year: '2021' ... --- _id: '21436' abstract: - lang: eng text: Ultrasonic wire bonding is a solid-state joining process, used in the electronics industry to form electrical connections, e.g. to connect electrical terminals within semiconductor modules. Many process parameters affect the bond strength, such like the bond normal force, ultrasonic power, wire material and bonding frequency. Today, process design, development, and optimization is most likely based on the knowledge of process engineers and is mainly performed by experimental testing. In this contribution, a newly developed simulation tool is presented, to reduce time and costs and efficiently determine optimized process parameter. Based on a co-simulation of MATLAB and ANSYS, the different physical phenomena of the wire bonding process are considered using finite element simulation for the complex plastic deformation of the wire and reduced order models for the transient dynamics of the transducer, wire, substrate and bond formation. The model parameters such as the coefficients of friction between bond tool and wire and between wire and substrate were determined for aluminium and copper wire in experiments with a test rig specially developed for the requirements of heavy wire bonding. To reduce simulation time, for the finite element simulation a restart analysis and high performance computing is utilized. Detailed analysis of the bond formation showed, that the normal pressure distribution in the contact between wire and substrate has high impact on bond formation and distribution of welded areas in the contact area. author: - first_name: Reinhard full_name: Schemmel, Reinhard id: '28647' last_name: Schemmel - first_name: Viktor full_name: Krieger, Viktor last_name: Krieger - 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: Schemmel R, Krieger V, Hemsel T, Sextro W. Co-simulation of MATLAB and ANSYS for ultrasonic wire bonding process optimization. Microelectronics Reliability. 2021;119:114077. doi:https://doi.org/10.1016/j.microrel.2021.114077 apa: Schemmel, R., Krieger, V., Hemsel, T., & Sextro, W. (2021). Co-simulation of MATLAB and ANSYS for ultrasonic wire bonding process optimization. Microelectronics Reliability, 119, 114077. https://doi.org/10.1016/j.microrel.2021.114077 bibtex: '@article{Schemmel_Krieger_Hemsel_Sextro_2021, title={Co-simulation of MATLAB and ANSYS for ultrasonic wire bonding process optimization}, volume={119}, DOI={https://doi.org/10.1016/j.microrel.2021.114077}, journal={Microelectronics Reliability}, author={Schemmel, Reinhard and Krieger, Viktor and Hemsel, Tobias and Sextro, Walter}, year={2021}, pages={114077} }' chicago: 'Schemmel, Reinhard, Viktor Krieger, Tobias Hemsel, and Walter Sextro. “Co-Simulation of MATLAB and ANSYS for Ultrasonic Wire Bonding Process Optimization.” Microelectronics Reliability 119 (2021): 114077. https://doi.org/10.1016/j.microrel.2021.114077.' ieee: 'R. Schemmel, V. Krieger, T. Hemsel, and W. Sextro, “Co-simulation of MATLAB and ANSYS for ultrasonic wire bonding process optimization,” Microelectronics Reliability, vol. 119, p. 114077, 2021, doi: https://doi.org/10.1016/j.microrel.2021.114077.' mla: Schemmel, Reinhard, et al. “Co-Simulation of MATLAB and ANSYS for Ultrasonic Wire Bonding Process Optimization.” Microelectronics Reliability, vol. 119, 2021, p. 114077, doi:https://doi.org/10.1016/j.microrel.2021.114077. short: R. Schemmel, V. Krieger, T. Hemsel, W. Sextro, Microelectronics Reliability 119 (2021) 114077. date_created: 2021-03-10T09:37:02Z date_updated: 2023-09-21T14:15:33Z department: - _id: '151' doi: https://doi.org/10.1016/j.microrel.2021.114077 intvolume: ' 119' keyword: - Ultrasonic heavy wire bonding - Co-simulation - ANSYS - MATLAB - Process optimization - Friction coefficient - Copper-copper - Aluminium-copper language: - iso: eng page: '114077' publication: Microelectronics Reliability publication_identifier: issn: - 0026-2714 publication_status: published quality_controlled: '1' status: public title: Co-simulation of MATLAB and ANSYS for ultrasonic wire bonding process optimization type: journal_article user_id: '210' volume: 119 year: '2021' ... --- _id: '22930' abstract: - lang: eng text: Self-piercing riveting is an established technique for joining multi-material structures in car body manufacturing. Rivets for self-piercing riveting differ in their geometry, the material used, the condition of the material and their surface condition. To shorten the manufacturing process by omitting the heat treatment and the coating process, the authors have elaborated a concept for the use of stainless steel with high strain hardening as a rivet material. The focus of the present investigation is on the evaluation of the influences of the rivet’s geometry and material on its deformation behaviour. Conventional rivets of types P and HD2, a rivet with an improved geometry made of treatable steel 38B2, and rivets made of the stainless steels 1.3815 and 1.4541 are examined. The analysis is conducted by means of multi-step joining tests for two material combinations comprising high-strength steel HCT70X and aluminium EN AW-5083. The joints are cut to provide a cross-section and the deformation behaviour of the different rivets is analysed on the basis of the measured changes in geometry and hardness. In parallel, an examination of the force-stroke curves provides further insights. It can be demonstrated that, besides the geometry, the material strength, in particular, has a significant influence on the deformation behaviour of the rivet. The strength of steel 1.4541 is seen to be too low for the joining task, while the strength of steel 1.3815 is sufficient, and hence the investigation confirms the capability of rivets made of 1.3815 for joining even challenging material combinations. author: - first_name: Benedikt full_name: Uhe, Benedikt id: '38131' last_name: Uhe - first_name: Clara-Maria full_name: Kuball, Clara-Maria last_name: Kuball - first_name: Marion full_name: Merklein, Marion last_name: Merklein - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: 'Uhe B, Kuball C-M, Merklein M, Meschut G. Self-Piercing Riveting Using Rivets Made of Stainless Steel with High Strain Hardening. In: Daehn G, Cao J, Kinsey B, Tekkaya E, Vivek A, Yoshida Y, eds. Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity. The Minerals, Metals & Materials Series. Springer; 2021:1495-1506. doi:10.1007/978-3-030-75381-8_124' apa: Uhe, B., Kuball, C.-M., Merklein, M., & Meschut, G. (2021). Self-Piercing Riveting Using Rivets Made of Stainless Steel with High Strain Hardening. In G. Daehn, J. Cao, B. Kinsey, E. Tekkaya, A. Vivek, & Y. Yoshida (Eds.), Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity. The Minerals, Metals & Materials Series. (pp. 1495–1506). Springer. https://doi.org/10.1007/978-3-030-75381-8_124 bibtex: '@inbook{Uhe_Kuball_Merklein_Meschut_2021, place={Cham}, title={Self-Piercing Riveting Using Rivets Made of Stainless Steel with High Strain Hardening}, DOI={10.1007/978-3-030-75381-8_124}, booktitle={Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity. The Minerals, Metals & Materials Series.}, publisher={Springer}, author={Uhe, Benedikt and Kuball, Clara-Maria and Merklein, Marion and Meschut, Gerson}, editor={Daehn, Glenn and Cao, Jian and Kinsey, Brad and Tekkaya, Erman and Vivek, Anupam and Yoshida, Yoshinori}, year={2021}, pages={1495–1506} }' chicago: 'Uhe, Benedikt, Clara-Maria Kuball, Marion Merklein, and Gerson Meschut. “Self-Piercing Riveting Using Rivets Made of Stainless Steel with High Strain Hardening.” In Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity. The Minerals, Metals & Materials Series., edited by Glenn Daehn, Jian Cao, Brad Kinsey, Erman Tekkaya, Anupam Vivek, and Yoshinori Yoshida, 1495–1506. Cham: Springer, 2021. https://doi.org/10.1007/978-3-030-75381-8_124.' ieee: 'B. Uhe, C.-M. Kuball, M. Merklein, and G. Meschut, “Self-Piercing Riveting Using Rivets Made of Stainless Steel with High Strain Hardening,” in Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity. The Minerals, Metals & Materials Series., G. Daehn, J. Cao, B. Kinsey, E. Tekkaya, A. Vivek, and Y. Yoshida, Eds. Cham: Springer, 2021, pp. 1495–1506.' mla: Uhe, Benedikt, et al. “Self-Piercing Riveting Using Rivets Made of Stainless Steel with High Strain Hardening.” Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity. The Minerals, Metals & Materials Series., edited by Glenn Daehn et al., Springer, 2021, pp. 1495–506, doi:10.1007/978-3-030-75381-8_124. short: 'B. Uhe, C.-M. Kuball, M. Merklein, G. Meschut, in: G. Daehn, J. Cao, B. Kinsey, E. Tekkaya, A. Vivek, Y. Yoshida (Eds.), Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity. The Minerals, Metals & Materials Series., Springer, Cham, 2021, pp. 1495–1506.' date_created: 2021-08-04T14:02:32Z date_updated: 2026-02-27T10:40:39Z department: - _id: '157' doi: 10.1007/978-3-030-75381-8_124 editor: - first_name: Glenn full_name: Daehn, Glenn last_name: Daehn - first_name: Jian full_name: Cao, Jian last_name: Cao - first_name: Brad full_name: Kinsey, Brad last_name: Kinsey - first_name: Erman full_name: Tekkaya, Erman last_name: Tekkaya - first_name: Anupam full_name: Vivek, Anupam last_name: Vivek - first_name: Yoshinori full_name: Yoshida, Yoshinori last_name: Yoshida keyword: - Self-piercing riveting - Lightweight design - Deformation behaviour - Stainless steel - High nitrogen steel language: - iso: eng page: 1495-1506 place: Cham publication: Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity. The Minerals, Metals & Materials Series. publication_status: published publisher: Springer quality_controlled: '1' status: public title: Self-Piercing Riveting Using Rivets Made of Stainless Steel with High Strain Hardening type: book_chapter user_id: '53912' year: '2021' ... --- _id: '21542' abstract: - lang: eng text: Using near-field (NF) scan data to predict the far-field (FF) behaviour of radiating electronic systems represents a novel method to accompany the whole RF design process. This approach involves so-called Huygens' box as an efficient radiation model inside an electromagnetic (EM) simulation tool and then transforms the scanned NF measured data into the FF. For this, the basic idea of the Huygens'box principle and the NF-to-FF transformation are briefly presented. The NF is measured on the Huygens' box around a device under test using anNF scanner, recording the magnitude and phase of the site-related magnetic and electric components. A comparison between a fullwave simulation and the measurement results shows a good similarity in both the NF and the simulated and transformed FF.Thus, this method is applicable to predict the FF behaviour of any electronic system by measuring the NF. With this knowledge, the RF design can be improved due to allowing a significant reduction of EM compatibility failure at the end of the development flow. In addition, the very efficient FF radiation model can be used for detailed investigations in various environments and the impact of such an equivalent radiation source on other electronic systems can be assessed. author: - first_name: Dominik full_name: Schröder, Dominik last_name: Schröder - first_name: Sven full_name: Lange, Sven id: '38240' last_name: Lange - first_name: Christian full_name: Hangmann, Christian last_name: Hangmann - first_name: Christian full_name: Hedayat, Christian last_name: Hedayat citation: ama: 'Schröder D, Lange S, Hangmann C, Hedayat C. Far-field prediction combining simulations with near-field measurements for EMI assessment of PCBs. In: Tensorial Analysis of Networks (TAN) Modelling for PCB Signal Integrity and EMC Analysis. 1st ed. Croyton, UK: The Institution of Engineering and Technology (IET); 2020:315-346 (32). doi:10.1049/pbcs072e_ch14' apa: 'Schröder, D., Lange, S., Hangmann, C., & Hedayat, C. (2020). Far-field prediction combining simulations with near-field measurements for EMI assessment of PCBs. In Tensorial Analysis of Networks (TAN) Modelling for PCB Signal Integrity and EMC Analysis (1st ed., pp. 315-346 (32)). Croyton, UK: The Institution of Engineering and Technology (IET). https://doi.org/10.1049/pbcs072e_ch14' bibtex: '@inbook{Schröder_Lange_Hangmann_Hedayat_2020, place={Croyton, UK}, edition={1}, title={Far-field prediction combining simulations with near-field measurements for EMI assessment of PCBs}, DOI={10.1049/pbcs072e_ch14}, booktitle={Tensorial Analysis of Networks (TAN) Modelling for PCB Signal Integrity and EMC Analysis}, publisher={ The Institution of Engineering and Technology (IET)}, author={Schröder, Dominik and Lange, Sven and Hangmann, Christian and Hedayat, Christian}, year={2020}, pages={315-346 (32)} }' chicago: 'Schröder, Dominik, Sven Lange, Christian Hangmann, and Christian Hedayat. “Far-Field Prediction Combining Simulations with near-Field Measurements for EMI Assessment of PCBs.” In Tensorial Analysis of Networks (TAN) Modelling for PCB Signal Integrity and EMC Analysis, 1st ed., 315-346 (32). Croyton, UK: The Institution of Engineering and Technology (IET), 2020. https://doi.org/10.1049/pbcs072e_ch14.' ieee: 'D. Schröder, S. Lange, C. Hangmann, and C. Hedayat, “Far-field prediction combining simulations with near-field measurements for EMI assessment of PCBs,” in Tensorial Analysis of Networks (TAN) Modelling for PCB Signal Integrity and EMC Analysis, 1st ed., Croyton, UK: The Institution of Engineering and Technology (IET), 2020, pp. 315-346 (32).' mla: Schröder, Dominik, et al. “Far-Field Prediction Combining Simulations with near-Field Measurements for EMI Assessment of PCBs.” Tensorial Analysis of Networks (TAN) Modelling for PCB Signal Integrity and EMC Analysis, 1st ed., The Institution of Engineering and Technology (IET), 2020, pp. 315-346 (32), doi:10.1049/pbcs072e_ch14. short: 'D. Schröder, S. Lange, C. Hangmann, C. Hedayat, in: Tensorial Analysis of Networks (TAN) Modelling for PCB Signal Integrity and EMC Analysis, 1st ed., The Institution of Engineering and Technology (IET), Croyton, UK, 2020, pp. 315-346 (32).' date_created: 2021-03-18T13:49:49Z date_updated: 2022-01-06T06:55:03Z department: - _id: '485' doi: 10.1049/pbcs072e_ch14 edition: '1' keyword: - Huygens' box - NF-to-FF transformation - efficient FF radiation model - FF behaviour - EMI assessment - PCB - near-field measurements - efficient radiation model - far-field behaviour - RF design process - far-field prediction - Huygens'box principle - fullwave simulation - electronic system radiation - equivalent radiation source - electromagnetic simulation tool - near-field scan data - EM compatibility failure reduction language: - iso: eng main_file_link: - url: https://digital-library.theiet.org/content/books/10.1049/pbcs072e_ch14 page: 315-346 (32) place: Croyton, UK project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Tensorial Analysis of Networks (TAN) Modelling for PCB Signal Integrity and EMC Analysis publication_identifier: isbn: - '9781839530494' - '9781839530500' publication_status: published publisher: ' The Institution of Engineering and Technology (IET)' related_material: record: - id: '21542' relation: other status: public status: public title: Far-field prediction combining simulations with near-field measurements for EMI assessment of PCBs type: book_chapter user_id: '38240' year: '2020' ... --- _id: '17055' abstract: - lang: eng text: Understanding a new literature corpus can be a grueling experience for junior scholars. Nevertheless, corresponding guidelines have not been updated for decades. We contend that the traditional strategy of skimming all papers and reading selected papers afterwards needs to be revised. Therefore, we design a new strategy that guides the overall exploratory process by prioritizing influential papers for initial reading, followed by skimming the remaining papers. Consistent with schemata theory, starting with in-depth reading allows readers to acquire more substantial prior content schemata, which are representa-tive for the literature corpus and useful in the following skimming process. To this end, we develop a prototype that identifies the influential papers from a set of PDFs, which is illustrated in a case study in the IT business value domain. With the new strategy, we envision a more efficient process of exploring unknown literature corpora. author: - first_name: Gerit full_name: Wagner, Gerit last_name: Wagner - first_name: Philipp full_name: Empl, Philipp last_name: Empl - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Wagner G, Empl P, Schryen G. Designing a Novel Strategy for Exploring Literature Corpora. In: 28th European Conference on Information Systems (ECIS 2020). ; 2020.' apa: Wagner, G., Empl, P., & Schryen, G. (2020). Designing a Novel Strategy for Exploring Literature Corpora. In 28th European Conference on Information Systems (ECIS 2020). Marrakesh, Morocco. bibtex: '@inproceedings{Wagner_Empl_Schryen_2020, title={Designing a Novel Strategy for Exploring Literature Corpora}, booktitle={28th European Conference on Information Systems (ECIS 2020)}, author={Wagner, Gerit and Empl, Philipp and Schryen, Guido}, year={2020} }' chicago: Wagner, Gerit, Philipp Empl, and Guido Schryen. “Designing a Novel Strategy for Exploring Literature Corpora.” In 28th European Conference on Information Systems (ECIS 2020), 2020. ieee: G. Wagner, P. Empl, and G. Schryen, “Designing a Novel Strategy for Exploring Literature Corpora,” in 28th European Conference on Information Systems (ECIS 2020), Marrakesh, Morocco, 2020. mla: Wagner, Gerit, et al. “Designing a Novel Strategy for Exploring Literature Corpora.” 28th European Conference on Information Systems (ECIS 2020), 2020. short: 'G. Wagner, P. Empl, G. Schryen, in: 28th European Conference on Information Systems (ECIS 2020), 2020.' conference: location: Marrakesh, Morocco name: Twenty-Eigth European Conference on Information Systems (ECIS2020) date_created: 2020-05-24T15:23:32Z date_updated: 2022-01-06T06:53:03Z ddc: - '000' department: - _id: '277' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2020-05-24T17:17:32Z date_updated: 2021-08-13T14:04:55Z file_id: '17056' file_name: 2020-03-27-ECIS2020 Designing a novel strategy for exploring literature corpora.pdf file_size: 590754 relation: main_file file_date_updated: 2021-08-13T14:04:55Z has_accepted_license: '1' keyword: - Reading and skimming - Exploring literature - Review methodology - Design science research - Schemata theory language: - iso: eng oa: '1' publication: 28th European Conference on Information Systems (ECIS 2020) status: public title: Designing a Novel Strategy for Exploring Literature Corpora type: conference user_id: '61579' year: '2020' ... --- _id: '16285' abstract: - lang: eng text: To decide in which part of town to open stores, high street retailers consult statistical data on customers and cities, but they cannot analyze their customers’ shopping behavior and geospatial features of a city due to missing data. While previous research has proposed recommendation systems and decision aids that address this type of decision problem – including factory location and assortment planning – there currently is no design knowledge available to prescribe the design of city center area recommendation systems (CCARS). We set out to design a software prototype considering local customers’ shopping interests and geospatial data on their shopping trips for retail site selection. With real data on 500 customers and 1,100 shopping trips, we demonstrate and evaluate our IT artifact. Our results illustrate how retailers and public town center managers can use CCARS for spatial location selection, growing retailers’ profits and a city center’s attractiveness for its citizens. author: - first_name: Philipp full_name: zur Heiden, Philipp id: '64394' last_name: zur Heiden - first_name: Carsten Ingo full_name: Berendes, Carsten Ingo id: '53344' last_name: Berendes - first_name: Daniel full_name: Beverungen, Daniel id: '59677' last_name: Beverungen citation: ama: 'zur Heiden P, Berendes CI, Beverungen D. Designing City Center Area Recommendation Systems . In: Proceedings of the 15th International Conference on Wirtschaftsinformatik. Potsdam; 2020. doi:doi.org/10.30844/wi_2020_e1-heiden' apa: zur Heiden, P., Berendes, C. I., & Beverungen, D. (2020). Designing City Center Area Recommendation Systems . In Proceedings of the 15th International Conference on Wirtschaftsinformatik. Potsdam. https://doi.org/doi.org/10.30844/wi_2020_e1-heiden bibtex: '@inproceedings{zur Heiden_Berendes_Beverungen_2020, place={Potsdam}, title={Designing City Center Area Recommendation Systems }, DOI={doi.org/10.30844/wi_2020_e1-heiden}, booktitle={Proceedings of the 15th International Conference on Wirtschaftsinformatik}, author={zur Heiden, Philipp and Berendes, Carsten Ingo and Beverungen, Daniel}, year={2020} }' chicago: Heiden, Philipp zur, Carsten Ingo Berendes, and Daniel Beverungen. “Designing City Center Area Recommendation Systems .” In Proceedings of the 15th International Conference on Wirtschaftsinformatik. Potsdam, 2020. https://doi.org/doi.org/10.30844/wi_2020_e1-heiden. ieee: P. zur Heiden, C. I. Berendes, and D. Beverungen, “Designing City Center Area Recommendation Systems ,” in Proceedings of the 15th International Conference on Wirtschaftsinformatik, Potsdam, 2020. mla: zur Heiden, Philipp, et al. “Designing City Center Area Recommendation Systems .” Proceedings of the 15th International Conference on Wirtschaftsinformatik, 2020, doi:doi.org/10.30844/wi_2020_e1-heiden. short: 'P. zur Heiden, C.I. Berendes, D. Beverungen, in: Proceedings of the 15th International Conference on Wirtschaftsinformatik, Potsdam, 2020.' conference: end_date: 2020-03-11 location: Potsdam name: 15th International Conference on Wirtschaftsinformatik start_date: 2020-03-07 date_created: 2020-03-13T07:05:24Z date_updated: 2022-01-06T06:52:48Z ddc: - '000' department: - _id: '526' doi: doi.org/10.30844/wi_2020_e1-heiden file: - access_level: closed content_type: application/pdf creator: pzh date_created: 2020-03-13T06:58:54Z date_updated: 2020-03-13T06:58:54Z file_id: '16286' file_name: E1_City_recommendations_Master_final.pdf file_size: 1370273 relation: main_file success: 1 file_date_updated: 2020-03-13T06:58:54Z has_accepted_license: '1' keyword: - Town Center Management - High Street Retail - Recommender Systems - Geospatial Recommendations - Design Science Research language: - iso: eng main_file_link: - open_access: '1' url: https://library.gito.de/open-access-pdf/E1_City_recommendations_Master_final.pdf oa: '1' place: Potsdam project: - _id: '35' grant_number: ​02K15A073 name: ​Interaktive Einkaufserlebnisse in Innenstädten durch digitale Dienstleistungen publication: Proceedings of the 15th International Conference on Wirtschaftsinformatik publication_status: published quality_controlled: '1' status: public title: 'Designing City Center Area Recommendation Systems ' type: conference user_id: '64394' year: '2020' ... --- _id: '48366' abstract: - lang: eng text: 'The proportion of freshmen enrolled in dual study programmes has steadily increased in recent years. From the perspective of potential students, these programmes are highly attractive because they combine types of learning that used to be largely separate at an institutional level: vocational and academic learning. In training-integrated dual study programmes, different institutional contexts, governance regimes, teaching styles and learning environments make bridging these two worlds of learning a challenge for both educators and learners. However, these programmes also allow leeway for didactic innovation, through the cooperation of different types of educational institutions and through new ways of using available didactic methods, and for establishing a new relationship between higher education (HE) and vocational education and training (VET). This paper positions training-integrated dual study programmes as an object of design-based research (DBR). By developing and using an extended model for the pedagogic development of HEIs, “pädagogische Hochschulentwicklung” (Brahm, Jenert, & Euler, 2016a, p. 19; Euler, 2013, p. 360), the paper systematically identifies generic educational problems in these hybrids. Based on a literature review, this paper classifies and explains the design challenges at the level of the learning environment, the study programme and the organisation. The challenges revolve mainly around the cooperation and integration of HE and VET. The paper concludes with an outlook on future DBR projects designing dual studies.' article_number: '24' article_type: original author: - first_name: Lisa full_name: Mordhorst, Lisa id: '81839' last_name: Mordhorst - first_name: Bernd full_name: Gössling, Bernd last_name: Gössling citation: ama: 'Mordhorst L, Gössling B. Dual Study Programmes as a Design Challenge: Identifying Areas for Improvement as a Starting Point for Interventions. EDeR Educational Design Research. 2020;4(1). doi:10.15460/eder.4.1.1482' apa: 'Mordhorst, L., & Gössling, B. (2020). Dual Study Programmes as a Design Challenge: Identifying Areas for Improvement as a Starting Point for Interventions. EDeR. Educational Design Research, 4(1), Article 24. https://doi.org/10.15460/eder.4.1.1482' bibtex: '@article{Mordhorst_Gössling_2020, title={Dual Study Programmes as a Design Challenge: Identifying Areas for Improvement as a Starting Point for Interventions}, volume={4}, DOI={10.15460/eder.4.1.1482}, number={124}, journal={EDeR. Educational Design Research}, publisher={Staats- und Universitatsbibliothek Hamburg Carl von Ossietzky}, author={Mordhorst, Lisa and Gössling, Bernd}, year={2020} }' chicago: 'Mordhorst, Lisa, and Bernd Gössling. “Dual Study Programmes as a Design Challenge: Identifying Areas for Improvement as a Starting Point for Interventions.” EDeR. Educational Design Research 4, no. 1 (2020). https://doi.org/10.15460/eder.4.1.1482.' ieee: 'L. Mordhorst and B. Gössling, “Dual Study Programmes as a Design Challenge: Identifying Areas for Improvement as a Starting Point for Interventions,” EDeR. Educational Design Research, vol. 4, no. 1, Art. no. 24, 2020, doi: 10.15460/eder.4.1.1482.' mla: 'Mordhorst, Lisa, and Bernd Gössling. “Dual Study Programmes as a Design Challenge: Identifying Areas for Improvement as a Starting Point for Interventions.” EDeR. Educational Design Research, vol. 4, no. 1, 24, Staats- und Universitatsbibliothek Hamburg Carl von Ossietzky, 2020, doi:10.15460/eder.4.1.1482.' short: L. Mordhorst, B. Gössling, EDeR. Educational Design Research 4 (2020). date_created: 2023-10-20T16:30:26Z date_updated: 2023-10-20T16:35:36Z doi: 10.15460/eder.4.1.1482 intvolume: ' 4' issue: '1' keyword: - Dual study programmes - Design challenges - Pedagogic development of HEIs - Literature review - Study programme development - DBR cycle language: - iso: eng publication: EDeR. Educational Design Research publication_identifier: issn: - 2511-0667 publication_status: published publisher: Staats- und Universitatsbibliothek Hamburg Carl von Ossietzky status: public title: 'Dual Study Programmes as a Design Challenge: Identifying Areas for Improvement as a Starting Point for Interventions' type: journal_article user_id: '81839' volume: 4 year: '2020' ... --- _id: '48850' abstract: - lang: eng text: Sequential model-based optimization (SMBO) approaches are algorithms for solving problems that require computationally or otherwise expensive function evaluations. The key design principle of SMBO is a substitution of the true objective function by a surrogate, which is used to propose the point(s) to be evaluated next. SMBO algorithms are intrinsically modular, leaving the user with many important design choices. Significant research efforts go into understanding which settings perform best for which type of problems. Most works, however, focus on the choice of the model, the acquisition function, and the strategy used to optimize the latter. The choice of the initial sampling strategy, however, receives much less attention. Not surprisingly, quite diverging recommendations can be found in the literature. We analyze in this work how the size and the distribution of the initial sample influences the overall quality of the efficient global optimization (EGO) algorithm, a well-known SMBO approach. While, overall, small initial budgets using Halton sampling seem preferable, we also observe that the performance landscape is rather unstructured. We furthermore identify several situations in which EGO performs unfavorably against random sampling. Both observations indicate that an adaptive SMBO design could be beneficial, making SMBO an interesting test-bed for automated algorithm design. author: - first_name: Jakob full_name: Bossek, Jakob id: '102979' last_name: Bossek orcid: 0000-0002-4121-4668 - first_name: Carola full_name: Doerr, Carola last_name: Doerr - first_name: Pascal full_name: Kerschke, Pascal last_name: Kerschke citation: ama: 'Bossek J, Doerr C, Kerschke P. Initial Design Strategies and Their Effects on Sequential Model-Based Optimization: An Exploratory Case Study Based on BBOB. In: Proceedings of the Genetic and Evolutionary Computation Conference. GECCO ’20. Association for Computing Machinery; 2020:778–786. doi:10.1145/3377930.3390155' apa: 'Bossek, J., Doerr, C., & Kerschke, P. (2020). Initial Design Strategies and Their Effects on Sequential Model-Based Optimization: An Exploratory Case Study Based on BBOB. Proceedings of the Genetic and Evolutionary Computation Conference, 778–786. https://doi.org/10.1145/3377930.3390155' bibtex: '@inproceedings{Bossek_Doerr_Kerschke_2020, place={New York, NY, USA}, series={GECCO ’20}, title={Initial Design Strategies and Their Effects on Sequential Model-Based Optimization: An Exploratory Case Study Based on BBOB}, DOI={10.1145/3377930.3390155}, booktitle={Proceedings of the Genetic and Evolutionary Computation Conference}, publisher={Association for Computing Machinery}, author={Bossek, Jakob and Doerr, Carola and Kerschke, Pascal}, year={2020}, pages={778–786}, collection={GECCO ’20} }' chicago: 'Bossek, Jakob, Carola Doerr, and Pascal Kerschke. “Initial Design Strategies and Their Effects on Sequential Model-Based Optimization: An Exploratory Case Study Based on BBOB.” In Proceedings of the Genetic and Evolutionary Computation Conference, 778–786. GECCO ’20. New York, NY, USA: Association for Computing Machinery, 2020. https://doi.org/10.1145/3377930.3390155.' ieee: 'J. Bossek, C. Doerr, and P. Kerschke, “Initial Design Strategies and Their Effects on Sequential Model-Based Optimization: An Exploratory Case Study Based on BBOB,” in Proceedings of the Genetic and Evolutionary Computation Conference, 2020, pp. 778–786, doi: 10.1145/3377930.3390155.' mla: 'Bossek, Jakob, et al. “Initial Design Strategies and Their Effects on Sequential Model-Based Optimization: An Exploratory Case Study Based on BBOB.” Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, 2020, pp. 778–786, doi:10.1145/3377930.3390155.' short: 'J. Bossek, C. Doerr, P. Kerschke, in: Proceedings of the Genetic and Evolutionary Computation Conference, Association for Computing Machinery, New York, NY, USA, 2020, pp. 778–786.' date_created: 2023-11-14T15:58:53Z date_updated: 2023-12-13T10:44:01Z department: - _id: '819' doi: 10.1145/3377930.3390155 extern: '1' keyword: - continuous black-box optimization - design of experiments - initial design - sequential model-based optimization language: - iso: eng page: 778–786 place: New York, NY, USA publication: Proceedings of the Genetic and Evolutionary Computation Conference publication_identifier: isbn: - 978-1-4503-7128-5 publication_status: published publisher: Association for Computing Machinery series_title: GECCO ’20 status: public title: 'Initial Design Strategies and Their Effects on Sequential Model-Based Optimization: An Exploratory Case Study Based on BBOB' type: conference user_id: '102979' year: '2020' ... --- _id: '19976' abstract: - lang: eng text: The aim to reduce pollutant emission has led to a trend towards lightweight construction in car body development during the last years. As a consequence of the resulting need for multi-material design, mechanical joining technologies become increasingly important. Mechanical joining allows for the combination of dissimilar materials, while thermic joining techniques reach their limits. Self-piercing riveting enables the joining of dissimilar materials by using semi-tubular rivets as mechanical fasteners. The rivet production, however, is costly and time-consuming, as the rivets generally have to be hardened, tempered and coated after forming, in order to achieve an adequate strength and corrosion resistance. A promising approach to improve the efficiency of the rivet manufacturing is the use of high-strength high nitrogen steel as rivet material because these additional process steps would not be necessary anymore. As a result of the comparatively high nitrogen content, such steels have various beneficial properties like higher strength, good ductility and improved corrosion resistance. By cold bulk forming of high nitrogen steels high-strength parts can be manufactured due to the strengthening which is caused by the high strain hardening. However, high tool loads thereby have to be expected and are a major challenge during the production process. Consequently, there is a need for appropriate forming strategies. This paper presents key aspects concerning the process design for the manufacturing of semi-tubular self-piercing rivets made of high-strength steel. The aim is to produce the rivets in several forming stages without intermediate heat treatment between the single stages. Due to the high strain hardening of the material, a two stage forming concept will be investigated. Cup-backward extrusion is chosen as the first process step in order to form the rivet shank without forming the rivet foot. Thus, the strain hardening effects in the area of the rivet foot are minimized and the tool loads during the following process step can be reduced. During the second and final forming stage the detailed geometry of the rivet foot and the rivet head is formed. In this context, the effect of different variations, for example concerning the final geometry of the rivet foot, on the tool load is investigated using multistage numerical analysis. Furthermore, the influence of the process temperature on occurring stresses is analysed. Based on the results of the investigations, an adequate forming strategy and a tool concept for the manufacturing of semi-tubular self-piercing rivets made of high-strength steel are presented. citation: ama: Kuball C-M, Uhe B, Meschut G, Merklein M, eds. Process Design for the Forming of Semi-Tubular Self-Piercing Rivets Made of High Nitrogen Steel. Vol 50.; 2020:280-285. doi:10.1016/j.promfg.2020.08.052 apa: Kuball, C.-M., Uhe, B., Meschut, G., & Merklein, M. (Eds.). (2020). Process design for the forming of semi-tubular self-piercing rivets made of high nitrogen steel (Vol. 50, pp. 280–285). https://doi.org/10.1016/j.promfg.2020.08.052 bibtex: '@book{Kuball_Uhe_Meschut_Merklein_2020, series={Procedia Manufacturing}, title={Process design for the forming of semi-tubular self-piercing rivets made of high nitrogen steel}, volume={50}, DOI={10.1016/j.promfg.2020.08.052}, year={2020}, pages={280–285}, collection={Procedia Manufacturing} }' chicago: Kuball, Clara-Maria, Benedikt Uhe, Gerson Meschut, and Marion Merklein, eds. Process Design for the Forming of Semi-Tubular Self-Piercing Rivets Made of High Nitrogen Steel. Vol. 50. Procedia Manufacturing, 2020. https://doi.org/10.1016/j.promfg.2020.08.052. ieee: C.-M. Kuball, B. Uhe, G. Meschut, and M. Merklein, Eds., Process design for the forming of semi-tubular self-piercing rivets made of high nitrogen steel, vol. 50. 2020, pp. 280–285. mla: Kuball, Clara-Maria, et al., editors. Process Design for the Forming of Semi-Tubular Self-Piercing Rivets Made of High Nitrogen Steel. 2020, pp. 280–85, doi:10.1016/j.promfg.2020.08.052. short: C.-M. Kuball, B. Uhe, G. Meschut, M. Merklein, eds., Process Design for the Forming of Semi-Tubular Self-Piercing Rivets Made of High Nitrogen Steel, 2020. date_created: 2020-10-12T08:30:08Z date_updated: 2026-02-27T10:43:48Z department: - _id: '157' doi: 10.1016/j.promfg.2020.08.052 editor: - first_name: Clara-Maria full_name: Kuball, Clara-Maria last_name: Kuball - first_name: Benedikt full_name: Uhe, Benedikt id: '38131' last_name: Uhe - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: Marion full_name: Merklein, Marion last_name: Merklein intvolume: ' 50' keyword: - high nitrogen steel - self-piercing riveting - joining by forming - bulk forming - tool design language: - iso: eng page: 280-285 publication_status: published quality_controlled: '1' series_title: Procedia Manufacturing status: public title: Process design for the forming of semi-tubular self-piercing rivets made of high nitrogen steel type: conference_editor user_id: '53912' volume: 50 year: '2020' ... --- _id: '19973' abstract: - lang: eng text: As a result of lightweight design, increased use is being made of high-strength steel and aluminium in car bodies. Self-piercing riveting is an established technique for joining these materials. The dissimilar properties of the two materials have led to a number of different rivet geometries in the past. Each rivet geometry fulfils the requirements of the materials within a limited range. In the present investigation, an improved rivet geometry is developed, which permits the reliable joining of two material combinations that could only be joined by two different rivet geometries up until now. Material combination 1 consists of high-strength steel on both sides, while material combination 2 comprises aluminium on the punch side and high-strength steel on the die side. The material flow and the stress and strain conditions prevailing during the joining process are analysed by means of numerical simulation. The rivet geometry is then improved step-by-step on the basis of this analysis. Finally, the improved rivet geometry is manufactured and the findings of the investigation are verified in experimental joining tests. article_type: original author: - first_name: Benedikt full_name: Uhe, Benedikt id: '38131' last_name: Uhe - first_name: Clara-Maria full_name: Kuball, Clara-Maria last_name: Kuball - first_name: Marion full_name: Merklein, Marion last_name: Merklein - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 citation: ama: Uhe B, Kuball C-M, Merklein M, Meschut G. Improvement of a rivet geometry for the self-piercing riveting of high-strength steel and multi-material joints. Production Engineering. 2020;14:417-423. doi:10.1007/s11740-020-00973-w apa: Uhe, B., Kuball, C.-M., Merklein, M., & Meschut, G. (2020). Improvement of a rivet geometry for the self-piercing riveting of high-strength steel and multi-material joints. Production Engineering, 14, 417–423. https://doi.org/10.1007/s11740-020-00973-w bibtex: '@article{Uhe_Kuball_Merklein_Meschut_2020, title={Improvement of a rivet geometry for the self-piercing riveting of high-strength steel and multi-material joints}, volume={14}, DOI={10.1007/s11740-020-00973-w}, journal={Production Engineering}, author={Uhe, Benedikt and Kuball, Clara-Maria and Merklein, Marion and Meschut, Gerson}, year={2020}, pages={417–423} }' chicago: 'Uhe, Benedikt, Clara-Maria Kuball, Marion Merklein, and Gerson Meschut. “Improvement of a Rivet Geometry for the Self-Piercing Riveting of High-Strength Steel and Multi-Material Joints.” Production Engineering 14 (2020): 417–23. https://doi.org/10.1007/s11740-020-00973-w.' ieee: 'B. Uhe, C.-M. Kuball, M. Merklein, and G. Meschut, “Improvement of a rivet geometry for the self-piercing riveting of high-strength steel and multi-material joints,” Production Engineering, vol. 14, pp. 417–423, 2020, doi: 10.1007/s11740-020-00973-w.' mla: Uhe, Benedikt, et al. “Improvement of a Rivet Geometry for the Self-Piercing Riveting of High-Strength Steel and Multi-Material Joints.” Production Engineering, vol. 14, 2020, pp. 417–23, doi:10.1007/s11740-020-00973-w. short: B. Uhe, C.-M. Kuball, M. Merklein, G. Meschut, Production Engineering 14 (2020) 417–423. date_created: 2020-10-12T08:14:13Z date_updated: 2026-02-27T10:41:55Z department: - _id: '157' doi: 10.1007/s11740-020-00973-w intvolume: ' 14' keyword: - Self-piercing riveting - Joining technology - Rivet geometry - Multi-material design - High-strength steel - Aluminium language: - iso: eng page: 417-423 publication: Production Engineering publication_status: published quality_controlled: '1' status: public title: Improvement of a rivet geometry for the self-piercing riveting of high-strength steel and multi-material joints type: journal_article user_id: '53912' volume: 14 year: '2020' ...