--- _id: '8561' author: - first_name: Michael full_name: Liebendörfer, Michael id: '30933' last_name: Liebendörfer orcid: 0000-0001-9887-2074 - first_name: Reinhard full_name: Hochmuth, Reinhard last_name: Hochmuth - first_name: Stephan full_name: Schreiber, Stephan last_name: Schreiber - first_name: Robin full_name: Göller, Robin last_name: Göller - first_name: Jana full_name: Kolter, Jana last_name: Kolter - first_name: Rolf full_name: Biehler, Rolf last_name: Biehler - first_name: Jörg full_name: Kortemeyer, Jörg last_name: Kortemeyer - first_name: Laura full_name: Ostsieker, Laura last_name: Ostsieker citation: ama: 'Liebendörfer M, Hochmuth R, Schreiber S, et al. Vorstellung eines Fragebogens zur Erfassung von Lernstrategien in mathematikhaltigen Studiengängen. In: Roth J, Ames J, eds. Beiträge Zum Mathematikunterricht 2014. Münster: WTM-Verlag; 2014:739-742.' apa: 'Liebendörfer, M., Hochmuth, R., Schreiber, S., Göller, R., Kolter, J., Biehler, R., … Ostsieker, L. (2014). Vorstellung eines Fragebogens zur Erfassung von Lernstrategien in mathematikhaltigen Studiengängen. In J. Roth & J. Ames (Eds.), Beiträge zum Mathematikunterricht 2014 (pp. 739–742). Münster: WTM-Verlag.' bibtex: '@inbook{Liebendörfer_Hochmuth_Schreiber_Göller_Kolter_Biehler_Kortemeyer_Ostsieker_2014, place={Münster}, title={Vorstellung eines Fragebogens zur Erfassung von Lernstrategien in mathematikhaltigen Studiengängen}, booktitle={Beiträge zum Mathematikunterricht 2014}, publisher={WTM-Verlag}, author={Liebendörfer, Michael and Hochmuth, Reinhard and Schreiber, Stephan and Göller, Robin and Kolter, Jana and Biehler, Rolf and Kortemeyer, Jörg and Ostsieker, Laura}, editor={Roth, Jürgen and Ames, J.Editors}, year={2014}, pages={739–742} }' chicago: 'Liebendörfer, Michael, Reinhard Hochmuth, Stephan Schreiber, Robin Göller, Jana Kolter, Rolf Biehler, Jörg Kortemeyer, and Laura Ostsieker. “Vorstellung Eines Fragebogens Zur Erfassung von Lernstrategien in Mathematikhaltigen Studiengängen.” In Beiträge Zum Mathematikunterricht 2014, edited by Jürgen Roth and J. Ames, 739–42. Münster: WTM-Verlag, 2014.' ieee: 'M. Liebendörfer et al., “Vorstellung eines Fragebogens zur Erfassung von Lernstrategien in mathematikhaltigen Studiengängen,” in Beiträge zum Mathematikunterricht 2014, J. Roth and J. Ames, Eds. Münster: WTM-Verlag, 2014, pp. 739–742.' mla: Liebendörfer, Michael, et al. “Vorstellung Eines Fragebogens Zur Erfassung von Lernstrategien in Mathematikhaltigen Studiengängen.” Beiträge Zum Mathematikunterricht 2014, edited by Jürgen Roth and J. Ames, WTM-Verlag, 2014, pp. 739–42. short: 'M. Liebendörfer, R. Hochmuth, S. Schreiber, R. Göller, J. Kolter, R. Biehler, J. Kortemeyer, L. Ostsieker, in: J. Roth, J. Ames (Eds.), Beiträge Zum Mathematikunterricht 2014, WTM-Verlag, Münster, 2014, pp. 739–742.' date_created: 2019-03-25T15:35:25Z date_updated: 2022-01-06T07:03:57Z department: - _id: '10' editor: - first_name: Jürgen full_name: Roth, Jürgen last_name: Roth - first_name: J. full_name: Ames, J. last_name: Ames extern: '1' language: - iso: eng page: 739-742 place: Münster publication: Beiträge zum Mathematikunterricht 2014 publisher: WTM-Verlag status: public title: Vorstellung eines Fragebogens zur Erfassung von Lernstrategien in mathematikhaltigen Studiengängen type: book_chapter user_id: '30933' year: '2014' ... --- _id: '8762' author: - first_name: S. full_name: Sergent, S. last_name: Sergent - first_name: S. full_name: Kako, S. last_name: Kako - first_name: M. full_name: Bürger, M. last_name: Bürger - first_name: T. full_name: Schupp, T. last_name: Schupp - first_name: Donat Josef full_name: As, Donat Josef id: '14' last_name: As orcid: 0000-0003-1121-3565 - first_name: Y. full_name: Arakawa, Y. last_name: Arakawa citation: ama: Sergent S, Kako S, Bürger M, Schupp T, As DJ, Arakawa Y. Polarization properties of single zinc-blende GaN/AlN quantum dots. Physical Review B. 2014. doi:10.1103/physrevb.90.235312 apa: Sergent, S., Kako, S., Bürger, M., Schupp, T., As, D. J., & Arakawa, Y. (2014). Polarization properties of single zinc-blende GaN/AlN quantum dots. Physical Review B. https://doi.org/10.1103/physrevb.90.235312 bibtex: '@article{Sergent_Kako_Bürger_Schupp_As_Arakawa_2014, title={Polarization properties of single zinc-blende GaN/AlN quantum dots}, DOI={10.1103/physrevb.90.235312}, journal={Physical Review B}, author={Sergent, S. and Kako, S. and Bürger, M. and Schupp, T. and As, Donat Josef and Arakawa, Y.}, year={2014} }' chicago: Sergent, S., S. Kako, M. Bürger, T. Schupp, Donat Josef As, and Y. Arakawa. “Polarization Properties of Single Zinc-Blende GaN/AlN Quantum Dots.” Physical Review B, 2014. https://doi.org/10.1103/physrevb.90.235312. ieee: S. Sergent, S. Kako, M. Bürger, T. Schupp, D. J. As, and Y. Arakawa, “Polarization properties of single zinc-blende GaN/AlN quantum dots,” Physical Review B, 2014. mla: Sergent, S., et al. “Polarization Properties of Single Zinc-Blende GaN/AlN Quantum Dots.” Physical Review B, 2014, doi:10.1103/physrevb.90.235312. short: S. Sergent, S. Kako, M. Bürger, T. Schupp, D.J. As, Y. Arakawa, Physical Review B (2014). date_created: 2019-03-29T13:43:44Z date_updated: 2022-01-06T07:04:00Z department: - _id: '230' - _id: '429' doi: 10.1103/physrevb.90.235312 language: - iso: eng publication: Physical Review B publication_identifier: issn: - 1098-0121 - 1550-235X publication_status: published status: public title: Polarization properties of single zinc-blende GaN/AlN quantum dots type: journal_article user_id: '14' year: '2014' ... --- _id: '8842' author: - first_name: Ivan full_name: Jovanovikj, Ivan id: '39187' last_name: Jovanovikj orcid: https://orcid.org/0000-0002-1838-794X citation: ama: Jovanovikj I. Detection and Resolution of Data-Flow Differences in Business Process Models.; 2014. apa: Jovanovikj, I. (2014). Detection and Resolution of Data-Flow Differences in Business Process Models. bibtex: '@book{Jovanovikj_2014, title={Detection and Resolution of Data-Flow Differences in Business Process Models}, author={Jovanovikj, Ivan}, year={2014} }' chicago: Jovanovikj, Ivan. Detection and Resolution of Data-Flow Differences in Business Process Models, 2014. ieee: I. Jovanovikj, Detection and Resolution of Data-Flow Differences in Business Process Models. 2014. mla: Jovanovikj, Ivan. Detection and Resolution of Data-Flow Differences in Business Process Models. 2014. short: I. Jovanovikj, Detection and Resolution of Data-Flow Differences in Business Process Models, 2014. date_created: 2019-04-08T07:37:33Z date_updated: 2022-01-06T07:04:03Z department: - _id: '66' extern: '1' language: - iso: eng status: public supervisor: - first_name: Christian full_name: Gerth, Christian last_name: Gerth - first_name: Gregor full_name: Engels, Gregor id: '107' last_name: Engels title: Detection and Resolution of Data-Flow Differences in Business Process Models type: mastersthesis user_id: '39187' year: '2014' ... --- _id: '9583' author: - first_name: Marc full_name: Beutner, Marc id: '21118' last_name: Beutner - first_name: A full_name: Zoyke, A last_name: Zoyke citation: ama: 'Beutner M, Zoyke A. Individuelle Bildungsgangarbeit als Antwort auf Fachkräftebedarf und Qualifikationsveränderungen. In: Brucherseifer M, Münk D, Walter M, eds. Arbeit der Zukunft – Zukunft der Arbeit. Bonn; 2014:187-197.' apa: Beutner, M., & Zoyke, A. (2014). Individuelle Bildungsgangarbeit als Antwort auf Fachkräftebedarf und Qualifikationsveränderungen. In M. Brucherseifer, D. Münk, & M. Walter (Eds.), Arbeit der Zukunft – Zukunft der Arbeit (pp. 187–197). Bonn. bibtex: '@inbook{Beutner_Zoyke_2014, place={Bonn}, title={Individuelle Bildungsgangarbeit als Antwort auf Fachkräftebedarf und Qualifikationsveränderungen}, booktitle={Arbeit der Zukunft – Zukunft der Arbeit}, author={Beutner, Marc and Zoyke, A}, editor={Brucherseifer, M and Münk, D and Walter, MEditors}, year={2014}, pages={187–197} }' chicago: Beutner, Marc, and A Zoyke. “Individuelle Bildungsgangarbeit als Antwort auf Fachkräftebedarf und Qualifikationsveränderungen.” In Arbeit der Zukunft – Zukunft der Arbeit, edited by M Brucherseifer, D Münk, and M Walter, 187–97. Bonn, 2014. ieee: M. Beutner and A. Zoyke, “Individuelle Bildungsgangarbeit als Antwort auf Fachkräftebedarf und Qualifikationsveränderungen,” in Arbeit der Zukunft – Zukunft der Arbeit, M. Brucherseifer, D. Münk, and M. Walter, Eds. Bonn, 2014, pp. 187–197. mla: Beutner, Marc, and A. Zoyke. “Individuelle Bildungsgangarbeit als Antwort auf Fachkräftebedarf und Qualifikationsveränderungen.” Arbeit der Zukunft – Zukunft der Arbeit, edited by M Brucherseifer et al., 2014, pp. 187–97. short: 'M. Beutner, A. Zoyke, in: M. Brucherseifer, D. Münk, M. Walter (Eds.), Arbeit der Zukunft – Zukunft der Arbeit, Bonn, 2014, pp. 187–197.' date_created: 2019-05-02T07:08:59Z date_updated: 2022-01-06T07:04:16Z department: - _id: '211' editor: - first_name: M full_name: Brucherseifer, M last_name: Brucherseifer - first_name: D full_name: Münk, D last_name: Münk - first_name: M full_name: Walter, M last_name: Walter language: - iso: ger page: 187 - 197 place: Bonn publication: Arbeit der Zukunft – Zukunft der Arbeit status: public title: Individuelle Bildungsgangarbeit als Antwort auf Fachkräftebedarf und Qualifikationsveränderungen type: book_chapter user_id: '66030' year: '2014' ... --- _id: '9584' author: - first_name: Marc full_name: Beutner, Marc id: '21118' last_name: Beutner citation: ama: 'Beutner M. Bildungsgangarbeit in beruflichen Schulen – Praxisphasen und ihre Auswirkungen in der Bildungsgangarbeit. In: Braukmann U, Dilger B, Kremer H-H, eds. Wirtschaftspädagogische Handlungsfelder. Festschrift für Peter F. E. Sloane zum 60. Geburtstag. Detmold; 2014:125-144.' apa: Beutner, M. (2014). Bildungsgangarbeit in beruflichen Schulen – Praxisphasen und ihre Auswirkungen in der Bildungsgangarbeit. In U. Braukmann, B. Dilger, & H.-H. Kremer (Eds.), Wirtschaftspädagogische Handlungsfelder. Festschrift für Peter F. E. Sloane zum 60. Geburtstag (pp. 125–144). Detmold. bibtex: '@inbook{Beutner_2014, place={Detmold}, title={Bildungsgangarbeit in beruflichen Schulen – Praxisphasen und ihre Auswirkungen in der Bildungsgangarbeit}, booktitle={Wirtschaftspädagogische Handlungsfelder. Festschrift für Peter F. E. Sloane zum 60. Geburtstag}, author={Beutner, Marc}, editor={Braukmann, U and Dilger, B and Kremer, H.-HEditors}, year={2014}, pages={125–144} }' chicago: Beutner, Marc. “Bildungsgangarbeit in beruflichen Schulen – Praxisphasen und ihre Auswirkungen in der Bildungsgangarbeit.” In Wirtschaftspädagogische Handlungsfelder. Festschrift für Peter F. E. Sloane zum 60. Geburtstag, edited by U Braukmann, B Dilger, and H.-H Kremer, 125–44. Detmold, 2014. ieee: M. Beutner, “Bildungsgangarbeit in beruflichen Schulen – Praxisphasen und ihre Auswirkungen in der Bildungsgangarbeit,” in Wirtschaftspädagogische Handlungsfelder. Festschrift für Peter F. E. Sloane zum 60. Geburtstag, U. Braukmann, B. Dilger, and H.-H. Kremer, Eds. Detmold, 2014, pp. 125–144. mla: Beutner, Marc. “Bildungsgangarbeit in beruflichen Schulen – Praxisphasen und ihre Auswirkungen in der Bildungsgangarbeit.” Wirtschaftspädagogische Handlungsfelder. Festschrift für Peter F. E. Sloane zum 60. Geburtstag, edited by U Braukmann et al., 2014, pp. 125–44. short: 'M. Beutner, in: U. Braukmann, B. Dilger, H.-H. Kremer (Eds.), Wirtschaftspädagogische Handlungsfelder. Festschrift für Peter F. E. Sloane zum 60. Geburtstag, Detmold, 2014, pp. 125–144.' date_created: 2019-05-02T07:13:36Z date_updated: 2022-01-06T07:04:16Z department: - _id: '211' editor: - first_name: U full_name: Braukmann, U last_name: Braukmann - first_name: B full_name: Dilger, B last_name: Dilger - first_name: H.-H full_name: Kremer, H.-H last_name: Kremer language: - iso: ger page: 125 - 144 place: Detmold publication: Wirtschaftspädagogische Handlungsfelder. Festschrift für Peter F. E. Sloane zum 60. Geburtstag status: public title: Bildungsgangarbeit in beruflichen Schulen – Praxisphasen und ihre Auswirkungen in der Bildungsgangarbeit type: book_chapter user_id: '66030' year: '2014' ... --- _id: '9627' author: - first_name: Merle full_name: Tönnies, Merle id: '555' last_name: Tönnies citation: ama: 'Tönnies M. Kamm, J. / Lenz, B. (Hg.): Representing Terrorism and Deconstructing Terrorism. Arbeiten aus Anglistik und Amerikanistik. 2014;39:203-207.' apa: 'Tönnies, M. (2014). Kamm, J. / Lenz, B. (Hg.): Representing Terrorism and Deconstructing Terrorism. Arbeiten Aus Anglistik Und Amerikanistik.' bibtex: '@article{Tönnies_2014, title={Kamm, J. / Lenz, B. (Hg.): Representing Terrorism and Deconstructing Terrorism}, volume={39}, journal={Arbeiten aus Anglistik und Amerikanistik}, author={Tönnies, Merle}, year={2014}, pages={203–207} }' chicago: 'Tönnies, Merle. “Kamm, J. / Lenz, B. (Hg.): Representing Terrorism and Deconstructing Terrorism.” Arbeiten Aus Anglistik Und Amerikanistik, 2014.' ieee: 'M. Tönnies, “Kamm, J. / Lenz, B. (Hg.): Representing Terrorism and Deconstructing Terrorism,” Arbeiten aus Anglistik und Amerikanistik, vol. 39. pp. 203–207, 2014.' mla: 'Tönnies, Merle. “Kamm, J. / Lenz, B. (Hg.): Representing Terrorism and Deconstructing Terrorism.” Arbeiten Aus Anglistik Und Amerikanistik, vol. 39, 2014, pp. 203–07.' short: M. Tönnies, Arbeiten Aus Anglistik Und Amerikanistik 39 (2014) 203–207. date_created: 2019-05-07T09:09:26Z date_updated: 2022-01-06T07:04:17Z department: - _id: '36' - _id: '1' - _id: '380' intvolume: ' 39' language: - iso: eng page: 203-207 publication: Arbeiten aus Anglistik und Amerikanistik publication_status: published status: public title: 'Kamm, J. / Lenz, B. (Hg.): Representing Terrorism and Deconstructing Terrorism' type: review user_id: '32277' volume: 39 year: '2014' ... --- _id: '9656' author: - first_name: Marc full_name: Beutner, Marc id: '21118' last_name: Beutner - first_name: M full_name: Fortmann, M last_name: Fortmann - first_name: R full_name: Pechuel, R last_name: Pechuel citation: ama: Beutner M, Fortmann M, Pechuel R. E-Learning zur Sprach- und Berufsförderung – Einblicke in AGnovel. Advanced Graphic novels in der Beruflichen Bildung. Kölner Zeitschrift für Wirtschaft und Pädagogik. 2014;29(58):25-40. apa: Beutner, M., Fortmann, M., & Pechuel, R. (2014). E-Learning zur Sprach- und Berufsförderung – Einblicke in AGnovel. Advanced Graphic novels in der Beruflichen Bildung. Kölner Zeitschrift für Wirtschaft und Pädagogik, 29(58), 25–40. bibtex: '@article{Beutner_Fortmann_Pechuel_2014, title={E-Learning zur Sprach- und Berufsförderung – Einblicke in AGnovel. Advanced Graphic novels in der Beruflichen Bildung}, volume={29}, number={58}, journal={Kölner Zeitschrift für Wirtschaft und Pädagogik}, author={Beutner, Marc and Fortmann, M and Pechuel, R}, year={2014}, pages={25–40} }' chicago: 'Beutner, Marc, M Fortmann, and R Pechuel. “E-Learning zur Sprach- und Berufsförderung – Einblicke in AGnovel. Advanced Graphic novels in der Beruflichen Bildung.” Kölner Zeitschrift für Wirtschaft und Pädagogik 29, no. 58 (2014): 25–40.' ieee: M. Beutner, M. Fortmann, and R. Pechuel, “E-Learning zur Sprach- und Berufsförderung – Einblicke in AGnovel. Advanced Graphic novels in der Beruflichen Bildung,” Kölner Zeitschrift für Wirtschaft und Pädagogik, vol. 29, no. 58, pp. 25–40, 2014. mla: Beutner, Marc, et al. “E-Learning zur Sprach- und Berufsförderung – Einblicke in AGnovel. Advanced Graphic novels in der Beruflichen Bildung.” Kölner Zeitschrift für Wirtschaft und Pädagogik, vol. 29, no. 58, 2014, pp. 25–40. short: M. Beutner, M. Fortmann, R. Pechuel, Kölner Zeitschrift für Wirtschaft und Pädagogik 29 (2014) 25–40. date_created: 2019-05-07T11:01:54Z date_updated: 2022-01-06T07:04:17Z department: - _id: '211' intvolume: ' 29' issue: '58' language: - iso: ger page: 25 - 40 publication: Kölner Zeitschrift für Wirtschaft und Pädagogik status: public title: E-Learning zur Sprach- und Berufsförderung – Einblicke in AGnovel. Advanced Graphic novels in der Beruflichen Bildung type: journal_article user_id: '66030' volume: 29 year: '2014' ... --- _id: '9704' author: - first_name: Marc full_name: Beutner, Marc id: '21118' last_name: Beutner - first_name: L. M. full_name: Fortmann, L. M. last_name: Fortmann citation: ama: 'Beutner M, Fortmann LM. Entrepreneurship und Berufliche Bildung: UMW – Under my Wing – Ein Innovationsprojekt zur Unterstützung von Absolventen aus nicht geschäftsbezogenen Disziplinen bei der Unternehmensgründung. Kölner Zeitschrift für Wirtschaft und Pädagogik. 2014;29(56):3-24.' apa: 'Beutner, M., & Fortmann, L. M. (2014). Entrepreneurship und Berufliche Bildung: UMW – Under my Wing – Ein Innovationsprojekt zur Unterstützung von Absolventen aus nicht geschäftsbezogenen Disziplinen bei der Unternehmensgründung. Kölner Zeitschrift für Wirtschaft und Pädagogik, 29(56), 3–24.' bibtex: '@article{Beutner_Fortmann_2014, title={Entrepreneurship und Berufliche Bildung: UMW – Under my Wing – Ein Innovationsprojekt zur Unterstützung von Absolventen aus nicht geschäftsbezogenen Disziplinen bei der Unternehmensgründung}, volume={29}, number={56}, journal={Kölner Zeitschrift für Wirtschaft und Pädagogik}, author={Beutner, Marc and Fortmann, L. M.}, year={2014}, pages={3–24} }' chicago: 'Beutner, Marc, and L. M. Fortmann. “Entrepreneurship und Berufliche Bildung: UMW – Under my Wing – Ein Innovationsprojekt zur Unterstützung von Absolventen aus nicht geschäftsbezogenen Disziplinen bei der Unternehmensgründung.” Kölner Zeitschrift für Wirtschaft und Pädagogik 29, no. 56 (2014): 3–24.' ieee: 'M. Beutner and L. M. Fortmann, “Entrepreneurship und Berufliche Bildung: UMW – Under my Wing – Ein Innovationsprojekt zur Unterstützung von Absolventen aus nicht geschäftsbezogenen Disziplinen bei der Unternehmensgründung,” Kölner Zeitschrift für Wirtschaft und Pädagogik, vol. 29, no. 56, pp. 3–24, 2014.' mla: 'Beutner, Marc, and L. M. Fortmann. “Entrepreneurship und Berufliche Bildung: UMW – Under my Wing – Ein Innovationsprojekt zur Unterstützung von Absolventen aus nicht geschäftsbezogenen Disziplinen bei der Unternehmensgründung.” Kölner Zeitschrift für Wirtschaft und Pädagogik, vol. 29, no. 56, 2014, pp. 3–24.' short: M. Beutner, L.M. Fortmann, Kölner Zeitschrift für Wirtschaft und Pädagogik 29 (2014) 3–24. date_created: 2019-05-08T08:57:40Z date_updated: 2022-01-06T07:04:18Z department: - _id: '211' intvolume: ' 29' issue: '56' language: - iso: ger page: 3 - 24 publication: Kölner Zeitschrift für Wirtschaft und Pädagogik status: public title: 'Entrepreneurship und Berufliche Bildung: UMW – Under my Wing – Ein Innovationsprojekt zur Unterstützung von Absolventen aus nicht geschäftsbezogenen Disziplinen bei der Unternehmensgründung' type: journal_article user_id: '66030' volume: 29 year: '2014' ... --- _id: '9722' author: - first_name: Christina full_name: Flotmann, Christina id: '8736' last_name: Flotmann citation: ama: 'Flotmann C. Wiki-Wonderland? – Eine Qualitative Analyse zu Vor- und Nachteilen von Wikis für Lehrende und Studierende. In: Kordts-Freudinger R, Urban D, Schaper N, eds. Lehr- und Lernpraxis im Fokus – Forschungs- und Reflexionsbeiträge aus der Universität Paderborn. ; 2014.' apa: Flotmann, C. (2014). Wiki-Wonderland? – Eine Qualitative Analyse zu Vor- und Nachteilen von Wikis für Lehrende und Studierende. In R. Kordts-Freudinger, D. Urban, & N. Schaper (Eds.), Lehr- und Lernpraxis im Fokus – Forschungs- und Reflexionsbeiträge aus der Universität Paderborn. bibtex: '@inbook{Flotmann_2014, title={Wiki-Wonderland? – Eine Qualitative Analyse zu Vor- und Nachteilen von Wikis für Lehrende und Studierende}, booktitle={Lehr- und Lernpraxis im Fokus – Forschungs- und Reflexionsbeiträge aus der Universität Paderborn}, author={Flotmann, Christina}, editor={Kordts-Freudinger, Robert and Urban, Diana and Schaper, NicholasEditors}, year={2014} }' chicago: Flotmann, Christina. “Wiki-Wonderland? – Eine Qualitative Analyse zu Vor- und Nachteilen von Wikis für Lehrende und Studierende.” In Lehr- und Lernpraxis im Fokus – Forschungs- und Reflexionsbeiträge aus der Universität Paderborn, edited by Robert Kordts-Freudinger, Diana Urban, and Nicholas Schaper, 2014. ieee: C. Flotmann, “Wiki-Wonderland? – Eine Qualitative Analyse zu Vor- und Nachteilen von Wikis für Lehrende und Studierende,” in Lehr- und Lernpraxis im Fokus – Forschungs- und Reflexionsbeiträge aus der Universität Paderborn, R. Kordts-Freudinger, D. Urban, and N. Schaper, Eds. 2014. mla: Flotmann, Christina. “Wiki-Wonderland? – Eine Qualitative Analyse zu Vor- und Nachteilen von Wikis für Lehrende und Studierende.” Lehr- und Lernpraxis im Fokus – Forschungs- und Reflexionsbeiträge aus der Universität Paderborn, edited by Robert Kordts-Freudinger et al., 2014. short: 'C. Flotmann, in: R. Kordts-Freudinger, D. Urban, N. Schaper (Eds.), Lehr- und Lernpraxis im Fokus – Forschungs- und Reflexionsbeiträge aus der Universität Paderborn, 2014.' date_created: 2019-05-13T07:22:32Z date_updated: 2022-01-06T07:04:19Z department: - _id: '36' - _id: '1' - _id: '380' editor: - first_name: Robert full_name: Kordts-Freudinger, Robert last_name: Kordts-Freudinger - first_name: Diana full_name: Urban, Diana last_name: Urban - first_name: Nicholas full_name: Schaper, Nicholas last_name: Schaper language: - iso: ger publication: Lehr- und Lernpraxis im Fokus – Forschungs- und Reflexionsbeiträge aus der Universität Paderborn publication_status: published status: public title: Wiki-Wonderland? – Eine Qualitative Analyse zu Vor- und Nachteilen von Wikis für Lehrende und Studierende type: book_chapter user_id: '32277' year: '2014' ... --- _id: '9723' author: - first_name: Christina full_name: Flotmann, Christina id: '8736' last_name: Flotmann citation: ama: 'Flotmann C. Political Rhetoric as a Structural and Ideological Instrument in Star Wars and Harry Potter. In: Sedlmayr G, Waller N, eds. Politics in Fantasy Media: Essays on Ideology and Gender in Fiction, Film, Television and Games. Jefferson: McFarland; 2014:137-149.' apa: 'Flotmann, C. (2014). Political Rhetoric as a Structural and Ideological Instrument in Star Wars and Harry Potter. In G. Sedlmayr & N. Waller (Eds.), Politics in Fantasy Media: Essays on Ideology and Gender in Fiction, Film, Television and Games (pp. 137–149). Jefferson: McFarland.' bibtex: '@inbook{Flotmann_2014, place={Jefferson}, title={Political Rhetoric as a Structural and Ideological Instrument in Star Wars and Harry Potter}, booktitle={Politics in Fantasy Media: Essays on Ideology and Gender in Fiction, Film, Television and Games}, publisher={McFarland}, author={Flotmann, Christina}, editor={Sedlmayr, Gerold and Waller, NicoleEditors}, year={2014}, pages={137–149} }' chicago: 'Flotmann, Christina. “Political Rhetoric as a Structural and Ideological Instrument in Star Wars and Harry Potter.” In Politics in Fantasy Media: Essays on Ideology and Gender in Fiction, Film, Television and Games, edited by Gerold Sedlmayr and Nicole Waller, 137–49. Jefferson: McFarland, 2014.' ieee: 'C. Flotmann, “Political Rhetoric as a Structural and Ideological Instrument in Star Wars and Harry Potter,” in Politics in Fantasy Media: Essays on Ideology and Gender in Fiction, Film, Television and Games, G. Sedlmayr and N. Waller, Eds. Jefferson: McFarland, 2014, pp. 137–149.' mla: 'Flotmann, Christina. “Political Rhetoric as a Structural and Ideological Instrument in Star Wars and Harry Potter.” Politics in Fantasy Media: Essays on Ideology and Gender in Fiction, Film, Television and Games, edited by Gerold Sedlmayr and Nicole Waller, McFarland, 2014, pp. 137–49.' short: 'C. Flotmann, in: G. Sedlmayr, N. Waller (Eds.), Politics in Fantasy Media: Essays on Ideology and Gender in Fiction, Film, Television and Games, McFarland, Jefferson, 2014, pp. 137–149.' date_created: 2019-05-13T07:24:44Z date_updated: 2022-01-06T07:04:19Z department: - _id: '36' - _id: '1' - _id: '380' editor: - first_name: Gerold full_name: Sedlmayr, Gerold last_name: Sedlmayr - first_name: Nicole full_name: Waller, Nicole last_name: Waller language: - iso: eng page: 137-149 place: Jefferson publication: 'Politics in Fantasy Media: Essays on Ideology and Gender in Fiction, Film, Television and Games' publication_status: published publisher: McFarland status: public title: Political Rhetoric as a Structural and Ideological Instrument in Star Wars and Harry Potter type: book_chapter user_id: '32277' year: '2014' ... --- _id: '9817' author: - first_name: Tilman-Mathies full_name: Klar, Tilman-Mathies id: '35771' last_name: Klar - first_name: Dieter full_name: Engbring, Dieter last_name: Engbring citation: ama: 'Klar T-M, Engbring D. Medienbildung mit Informatik-Anteilen!? . In: Forbrig P, Magenheim J, eds. Gestalten und Meistern von Übergängen. 6. Tagung Hochschuldidatik der Informatik. Freiburg; 2014:125-142.' apa: Klar, T.-M., & Engbring, D. (2014). Medienbildung mit Informatik-Anteilen!? . In P. Forbrig & J. Magenheim (Eds.), Gestalten und Meistern von Übergängen. 6. Tagung Hochschuldidatik der Informatik (pp. 125–142). Freiburg. bibtex: '@inbook{Klar_Engbring_2014, place={Freiburg}, title={Medienbildung mit Informatik-Anteilen!? }, booktitle={Gestalten und Meistern von Übergängen. 6. Tagung Hochschuldidatik der Informatik}, author={Klar, Tilman-Mathies and Engbring, Dieter}, editor={Forbrig, P. and Magenheim, J.Editors}, year={2014}, pages={125–142} }' chicago: Klar, Tilman-Mathies, and Dieter Engbring. “Medienbildung mit Informatik-Anteilen!? .” In Gestalten und Meistern von Übergängen. 6. Tagung Hochschuldidatik der Informatik, edited by P. Forbrig and J. Magenheim, 125–42. Freiburg, 2014. ieee: T.-M. Klar and D. Engbring, “Medienbildung mit Informatik-Anteilen!? ,” in Gestalten und Meistern von Übergängen. 6. Tagung Hochschuldidatik der Informatik, P. Forbrig and J. Magenheim, Eds. Freiburg, 2014, pp. 125–142. mla: Klar, Tilman-Mathies, and Dieter Engbring. “Medienbildung mit Informatik-Anteilen!? .” Gestalten und Meistern von Übergängen. 6. Tagung Hochschuldidatik der Informatik, edited by P. Forbrig and J. Magenheim, 2014, pp. 125–42. short: 'T.-M. Klar, D. Engbring, in: P. Forbrig, J. Magenheim (Eds.), Gestalten und Meistern von Übergängen. 6. Tagung Hochschuldidatik der Informatik, Freiburg, 2014, pp. 125–142.' conference: end_date: 2014-09-16 location: Universität Freiburg name: 6. Tagung Hochschuldidatik der Informatik start_date: 2014-09-15 date_created: 2019-05-15T09:08:41Z date_updated: 2022-01-06T07:04:22Z editor: - first_name: P. full_name: Forbrig, P. last_name: Forbrig - first_name: J. full_name: Magenheim, J. last_name: Magenheim language: - iso: ger page: 125-142 place: Freiburg publication: Gestalten und Meistern von Übergängen. 6. Tagung Hochschuldidatik der Informatik publication_status: published status: public title: 'Medienbildung mit Informatik-Anteilen!? ' type: book_chapter user_id: '35771' year: '2014' ... --- _id: '9868' abstract: - lang: eng text: In order to increase mechanical strength, heat dissipation and ampacity and to decrease failure through fatigue fracture, wedge copper wire bonding is being introduced as a standard interconnection method for mass production. To achieve the same process stability when using copper wire instead of aluminum wire a profound understanding of the bonding process is needed. Due to the higher hardness of copper compared to aluminum wire it is more difficult to approach the surfaces of wire and substrate to a level where van der Waals forces are able to arise between atoms. Also, enough friction energy referred to the total contact area has to be generated to activate the surfaces. Therefore, a friction model is used to simulate the joining process. This model calculates the resulting energy of partial areas in the contact surface and provides information about the adhesion process of each area. The focus here is on the arising of micro joints in the contact area depending on the location in the contact and time. To validate the model, different touchdown forces are used to vary the initial contact areas of wire and substrate. Additionally, a piezoelectric tri-axial force sensor is built up to identify the known phases of pre-deforming, cleaning, adhering and diffusing for the real bonding process to map with the model. Test substrates as DBC and copper plate are used to show the different formations of a wedge bond connection due to hardness and reaction propensity. The experiments were done by using 500 $\mu$m copper wire and a standard V-groove tool. author: - first_name: Simon full_name: Althoff, Simon last_name: Althoff - first_name: Jan full_name: Neuhaus, Jan last_name: Neuhaus - 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: 'Althoff S, Neuhaus J, Hemsel T, Sextro W. Improving the bond quality of copper wire bonds using a friction model approach. In: Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th. ; 2014:1549-1555. doi:10.1109/ECTC.2014.6897500' apa: Althoff, S., Neuhaus, J., Hemsel, T., & Sextro, W. (2014). Improving the bond quality of copper wire bonds using a friction model approach. In Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th (pp. 1549–1555). https://doi.org/10.1109/ECTC.2014.6897500 bibtex: '@inproceedings{Althoff_Neuhaus_Hemsel_Sextro_2014, title={Improving the bond quality of copper wire bonds using a friction model approach}, DOI={10.1109/ECTC.2014.6897500}, booktitle={Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th}, author={Althoff, Simon and Neuhaus, Jan and Hemsel, Tobias and Sextro, Walter}, year={2014}, pages={1549–1555} }' chicago: Althoff, Simon, Jan Neuhaus, Tobias Hemsel, and Walter Sextro. “Improving the Bond Quality of Copper Wire Bonds Using a Friction Model Approach.” In Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th, 1549–55, 2014. https://doi.org/10.1109/ECTC.2014.6897500. ieee: S. Althoff, J. Neuhaus, T. Hemsel, and W. Sextro, “Improving the bond quality of copper wire bonds using a friction model approach,” in Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th, 2014, pp. 1549–1555. mla: Althoff, Simon, et al. “Improving the Bond Quality of Copper Wire Bonds Using a Friction Model Approach.” Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th, 2014, pp. 1549–55, doi:10.1109/ECTC.2014.6897500. short: 'S. Althoff, J. Neuhaus, T. Hemsel, W. Sextro, in: Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th, 2014, pp. 1549–1555.' date_created: 2019-05-20T12:11:44Z date_updated: 2019-09-16T10:57:58Z department: - _id: '151' doi: 10.1109/ECTC.2014.6897500 keyword: - adhesion - circuit reliability - deformation - diffusion - fatigue cracks - friction - interconnections - lead bonding - van der Waals forces - Cu - adhering process - adhesion process - ampacity improvement - bond quality improvement - cleaning process - diffusing process - fatigue fracture failure - friction energy - friction model - heat dissipation - mechanical strength - piezoelectric triaxial force sensor - predeforming process - size 500 mum - total contact area - van der Waals forces - wedge copper wire bonding - Bonding - Copper - Finite element analysis - Force - Friction - Substrates - Wires language: - iso: eng page: 1549-1555 publication: Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th quality_controlled: '1' status: public title: Improving the bond quality of copper wire bonds using a friction model approach type: conference user_id: '55222' year: '2014' ... --- _id: '9869' abstract: - lang: eng text: Cavitation monitoring is desired to optimize the sonication for diverse sonochemical processes and to detect changes or malfunctions during operation. In situ cavitation measurements can be carried out by detection of the acoustic emissions of cavitation bubbles by sensors in the liquid. However, in harsh environments sensors might not be applicable. Thus, the impact of cavitation on the electrical signals of a piezoelectric transducer has been analyzed as alternative method to measure the threshold, strength and type of cavitation. The applicability has been tested in three different setups to evaluate the general- izability of extracted indicators. In all setups indicators for the cavitation thresholds could be derived from the current signal. In two setups features showed two thresholds that may be linked to the types of cavitation. However, only one feature derived from the current signal in one particular setup correlated to the strength of cavitation. Cavitation detection based on the current signal of the transducer is a useful method to detect cavitation in harsh environments and without perturbing the sound field. Once appli- cable indicators have been identified, they may easily be tracked during the process. However, for more detailed studies about the cavitation activity and its spatial distribution, measurements with in situ sensors are recommended. author: - first_name: Peter full_name: Bornmann, Peter last_name: Bornmann - first_name: Tobias full_name: Hemsel, Tobias id: '210' last_name: Hemsel - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro - first_name: Gianluca full_name: Memoli, Gianluca last_name: Memoli - first_name: Mark full_name: Hodnett, Mark last_name: Hodnett - first_name: Bajram full_name: Zeqiri, Bajram last_name: Zeqiri citation: ama: 'Bornmann P, Hemsel T, Sextro W, Memoli G, Hodnett M, Zeqiri B. Self-Sensing Ultrasound Transducer for Cavitation Detection. In: 2014 IEEE International Ultrasonics Symposium Proceedings. ; 2014:663-666. doi:10.1109/ULTSYM.2014.0163' apa: Bornmann, P., Hemsel, T., Sextro, W., Memoli, G., Hodnett, M., & Zeqiri, B. (2014). Self-Sensing Ultrasound Transducer for Cavitation Detection. In 2014 IEEE International Ultrasonics Symposium Proceedings (pp. 663–666). https://doi.org/10.1109/ULTSYM.2014.0163 bibtex: '@inproceedings{Bornmann_Hemsel_Sextro_Memoli_Hodnett_Zeqiri_2014, title={Self-Sensing Ultrasound Transducer for Cavitation Detection}, DOI={10.1109/ULTSYM.2014.0163}, booktitle={2014 IEEE International Ultrasonics Symposium Proceedings}, author={Bornmann, Peter and Hemsel, Tobias and Sextro, Walter and Memoli, Gianluca and Hodnett, Mark and Zeqiri, Bajram}, year={2014}, pages={663–666} }' chicago: Bornmann, Peter, Tobias Hemsel, Walter Sextro, Gianluca Memoli, Mark Hodnett, and Bajram Zeqiri. “Self-Sensing Ultrasound Transducer for Cavitation Detection.” In 2014 IEEE International Ultrasonics Symposium Proceedings, 663–66, 2014. https://doi.org/10.1109/ULTSYM.2014.0163. ieee: P. Bornmann, T. Hemsel, W. Sextro, G. Memoli, M. Hodnett, and B. Zeqiri, “Self-Sensing Ultrasound Transducer for Cavitation Detection,” in 2014 IEEE International Ultrasonics Symposium Proceedings, 2014, pp. 663–666. mla: Bornmann, Peter, et al. “Self-Sensing Ultrasound Transducer for Cavitation Detection.” 2014 IEEE International Ultrasonics Symposium Proceedings, 2014, pp. 663–66, doi:10.1109/ULTSYM.2014.0163. short: 'P. Bornmann, T. Hemsel, W. Sextro, G. Memoli, M. Hodnett, B. Zeqiri, in: 2014 IEEE International Ultrasonics Symposium Proceedings, 2014, pp. 663–666.' date_created: 2019-05-20T12:13:02Z date_updated: 2019-05-20T12:13:41Z department: - _id: '151' doi: 10.1109/ULTSYM.2014.0163 language: - iso: eng page: 663-666 publication: 2014 IEEE International Ultrasonics Symposium Proceedings publication_identifier: isbn: - '9781479970490' status: public title: Self-Sensing Ultrasound Transducer for Cavitation Detection type: conference user_id: '55222' year: '2014' ... --- _id: '9870' abstract: - lang: eng text: Nowadays wire bonding is a widely-used technology for interconnecting chips in the packaging industry. Thereby, it is known that the bond quality massively depends upon the microstructure prevailing in the bond and consequently the materials used as well as the bonding parameters. However the actually used materials such as aluminum and gold are either characterized by comparibly poor conductivity or high costs, respectively. Due to its outstanding properties copper is a more attractive candidate. Still, a thorough investigation on the interrelationship between the material combinations, the processing parameters and the resulting microstructure for copper and aluminum wire bonding was not carried out yet. Depending on the aforementioned factors the microstructural evolution can be completely different during the bonding process. Therefore, this study focuses on the microstructural evolution of heavy copper and heavy aluminum wires bonded on copper substrates. The evolution of the wire microstructure as well as the wire-substrate-interface was investigated by scanning electron microscope in combination with electron backscatter diffraction and microhardness measurements. Various samples were extracted at different points of the bonding process, namely the as-received condition, after touchdown and after completed bonding. The results of the aluminum and copper wires were compared to each other in both longitudinal and transversal direction. It was found, that the two wire materials were completely different in the as-received condition regarding the grain size, the grain morphology, the texture and the microhardness. After touchdown the microstructure did not show significant changes in both materials, yet a strain-hardening was observed in the copper wire resulting from the touchdown force. When the bonding process was completed a different microstructure could be observed in both the wire as well as the layer for the materials investigated. Furthermore, a destinctive increase in the wire hardness could be found in case of copper, which was not observed for the aluminum wire. The ramifications between the two wire materials presented in this work will be discussed with the objective of optimizing the quality of the bonds. author: - first_name: Florian full_name: Eacock , Florian last_name: 'Eacock ' - first_name: Mirko full_name: Schaper, Mirko last_name: Schaper - first_name: Simon full_name: Althoff, Simon last_name: Althoff - first_name: Andreas full_name: Unger, Andreas last_name: Unger - first_name: Paul full_name: Eichwald, Paul last_name: Eichwald - first_name: Florian full_name: Hengsbach, Florian last_name: Hengsbach - first_name: Carolin full_name: Zinn, Carolin last_name: Zinn - first_name: ' Martin Joachim' full_name: Holzweissig, Martin Joachim last_name: Holzweissig - first_name: Karsten full_name: Guth, Karsten last_name: Guth citation: ama: 'Eacock F, Schaper M, Althoff S, et al. Microstructural investigations of aluminum and copper wire bonds. In: Proceedings of the 47th International Symposium on Microelectronics. ; 2014. doi:10.4071/isom-THP32' apa: Eacock , F., Schaper, M., Althoff, S., Unger, A., Eichwald, P., Hengsbach, F., … Guth, K. (2014). Microstructural investigations of aluminum and copper wire bonds. In Proceedings of the 47th International Symposium on Microelectronics. https://doi.org/10.4071/isom-THP32 bibtex: '@inproceedings{Eacock _Schaper_Althoff_Unger_Eichwald_Hengsbach_Zinn_Holzweissig_Guth_2014, title={Microstructural investigations of aluminum and copper wire bonds}, DOI={10.4071/isom-THP32}, booktitle={Proceedings of the 47th International Symposium on Microelectronics}, author={Eacock , Florian and Schaper, Mirko and Althoff, Simon and Unger, Andreas and Eichwald, Paul and Hengsbach, Florian and Zinn, Carolin and Holzweissig, Martin Joachim and Guth, Karsten}, year={2014} }' chicago: Eacock , Florian, Mirko Schaper, Simon Althoff, Andreas Unger, Paul Eichwald, Florian Hengsbach, Carolin Zinn, Martin Joachim Holzweissig, and Karsten Guth. “Microstructural Investigations of Aluminum and Copper Wire Bonds.” In Proceedings of the 47th International Symposium on Microelectronics, 2014. https://doi.org/10.4071/isom-THP32. ieee: F. Eacock et al., “Microstructural investigations of aluminum and copper wire bonds,” in Proceedings of the 47th International Symposium on Microelectronics, 2014. mla: Eacock , Florian, et al. “Microstructural Investigations of Aluminum and Copper Wire Bonds.” Proceedings of the 47th International Symposium on Microelectronics, 2014, doi:10.4071/isom-THP32. short: 'F. Eacock , M. Schaper, S. Althoff, A. Unger, P. Eichwald, F. Hengsbach, C. Zinn, Martin Joachim Holzweissig, K. Guth, in: Proceedings of the 47th International Symposium on Microelectronics, 2014.' date_created: 2019-05-20T12:14:11Z date_updated: 2019-09-16T10:58:50Z department: - _id: '151' doi: 10.4071/isom-THP32 keyword: - Bonding - Copper - Microstructure evolution language: - iso: eng publication: Proceedings of the 47th International Symposium on Microelectronics quality_controlled: '1' status: public title: Microstructural investigations of aluminum and copper wire bonds type: conference user_id: '55222' year: '2014' ... --- _id: '9871' abstract: - lang: eng text: 'Wire bonding is the most common technology for connecting electronic components. Due to their efficiency bond interconnections made of copper wire are used for example in the aerospace and medical technology as well as in the fields of renewable energies. One of the main cost factors in the manufacturing process is the consumables like bonding tools. The technological transition to copper as wire material causes significant wear on the millimeter large effective contact area of the bonding tool. This wear leads to a loss by a factor of 30 of the number of reliable interconnections which can be produced by a single tool. To reduce setting-up time in the production and minimizing costs, an enlarged bonding tool lifetime is desirable. Consequently a better understanding of wear and recognition of wear pattern is required. Therefore, the paper presents an analyzing method of the tool topography change of a heavy wire bonding tool by using a confocal microscope. Furthermore, the paper discusses the identification of the main wear indicators by the help of the named topography change for different bond parameters, like ultrasonic power and tool geometry. Reference topography has been carried out by choosing typical parameters of the production line. To judge whether the quality requirement of the bond connections made by a single tool cannot be fulfilled shear test of the source bond have been carried out after a defined number of produced bond connections. Main steps of analysis: (I)Topography of the tool surface is sampled after a defined number of bonds by means of a confocal microscope to detect the wear progress.(II)The recorded data is filtered using Matlab. So, measurement errors can be eliminated and the topography can be overlaid more easy to identify differences between diverse tools or differences in wear stages of the same tool.(III)The subsequent discretization of the topography into sub volumes allows to (IV)describe the loss of volume depending on the position in the groove. Thereby, intermediate status of wear of one tool can be used to obtain a persistent description of the topography change over the number of produced bonds by interpolating the confocal data. Afterwards the persistent change of the groove flank has been analyzed for the named test series to identify the main wear indicators and their effect on shear forces. All worn tools show dominant areas for volume loss especially for plastic deformation and accordingly abrasion. These wear mechanism can be referred to the change of main parts of the groove geometry like the rounding of the front and back radius. The most volume loss was identified in the upper part of the tool flanks or rather at the transition from the groove flank to the front or back radius. Furthermore the observation of the center of the groove flank shows just a little change in volume. All in all, the identification of the wear indicators will be discussed with the objective of increasing the tool lifetime by optimizing the tool geometry without losses in bond quality and reliability.' author: - first_name: Paul full_name: Eichwald, Paul last_name: Eichwald - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro - first_name: Simon full_name: Althof, Simon last_name: Althof - first_name: Florian full_name: Eacock, Florian last_name: Eacock - first_name: Andreas full_name: Unger, Andreas last_name: Unger - first_name: Tobias full_name: Meyer, Tobias last_name: Meyer - first_name: Karsten full_name: Guth, Karsten last_name: Guth citation: ama: 'Eichwald P, Sextro W, Althof S, et al. Analysis Method of Tool Topography Change and Identification of Wear Indicators for Heavy Copper Wire Wedge Bonding. In: Proceedings of the 47th International Symposium on Microelectronics. ; 2014:856-861. doi:10.4071/isom-THP34' apa: Eichwald, P., Sextro, W., Althof, S., Eacock, F., Unger, A., Meyer, T., & Guth, K. (2014). Analysis Method of Tool Topography Change and Identification of Wear Indicators for Heavy Copper Wire Wedge Bonding. In Proceedings of the 47th International Symposium on Microelectronics (pp. 856–861). https://doi.org/10.4071/isom-THP34 bibtex: '@inproceedings{Eichwald_Sextro_Althof_Eacock_Unger_Meyer_Guth_2014, title={Analysis Method of Tool Topography Change and Identification of Wear Indicators for Heavy Copper Wire Wedge Bonding}, DOI={10.4071/isom-THP34}, booktitle={Proceedings of the 47th International Symposium on Microelectronics}, author={Eichwald, Paul and Sextro, Walter and Althof, Simon and Eacock, Florian and Unger, Andreas and Meyer, Tobias and Guth, Karsten}, year={2014}, pages={856–861} }' chicago: Eichwald, Paul, Walter Sextro, Simon Althof, Florian Eacock, Andreas Unger, Tobias Meyer, and Karsten Guth. “Analysis Method of Tool Topography Change and Identification of Wear Indicators for Heavy Copper Wire Wedge Bonding.” In Proceedings of the 47th International Symposium on Microelectronics, 856–61, 2014. https://doi.org/10.4071/isom-THP34. ieee: P. Eichwald et al., “Analysis Method of Tool Topography Change and Identification of Wear Indicators for Heavy Copper Wire Wedge Bonding,” in Proceedings of the 47th International Symposium on Microelectronics, 2014, pp. 856–861. mla: Eichwald, Paul, et al. “Analysis Method of Tool Topography Change and Identification of Wear Indicators for Heavy Copper Wire Wedge Bonding.” Proceedings of the 47th International Symposium on Microelectronics, 2014, pp. 856–61, doi:10.4071/isom-THP34. short: 'P. Eichwald, W. Sextro, S. Althof, F. Eacock, A. Unger, T. Meyer, K. Guth, in: Proceedings of the 47th International Symposium on Microelectronics, 2014, pp. 856–861.' date_created: 2019-05-20T12:18:55Z date_updated: 2020-05-07T05:33:45Z department: - _id: '151' doi: 10.4071/isom-THP34 keyword: - wedge/wedge bonding - copper wire - tool wear language: - iso: eng page: 856-861 project: - _id: '92' grant_number: 02 PQ2210 name: Intelligente Herstellung zuverlässiger Kupferbondverbindungen publication: Proceedings of the 47th International Symposium on Microelectronics status: public title: Analysis Method of Tool Topography Change and Identification of Wear Indicators for Heavy Copper Wire Wedge Bonding type: conference user_id: '210' year: '2014' ... --- _id: '9873' abstract: - lang: eng text: Intelligent technical systems, which combine mechanical, electrical and software engineering with methods from control engineering and advanced mathematics, go far beyond the state of the art in mechatronics and open up fascinating perspectives. Among these systems are so-called self-optimizing systems, which are able to adapt their behavior autonomously and flexibly to changing operating conditions. The Collaborative Research Center 614 "Self-optimizing concepts and structures in mechanical engineering" pursued the long-term aim to enable others to develop dependable self-optimizing systems. Assuring their dependability poses new challenges. However, self-optimization also offers the possibility to adapt the system's behavior to improve dependability during operation. The aim of this book is to provide methods and techniques to master the challenges and to exploit the possibilities given by self-optimization. The reader will be able to develop self-optimizing systems that fulfill and surpass today’s dependability requirements easily. This book is directed to researchers and practitioners alike. It gives a brief introduction to the holistic development approach for self-optimizing mechatronic systems and the steps required to assure a dependable product design starting with the very early conceptual design phase. A guideline to select suitable methods for each step and the methods themselves are included. Each method is individually introduced, many examples and full references are given. author: - first_name: Jürgen full_name: Gausemeier, Jürgen last_name: Gausemeier - first_name: Franz full_name: Josef Rammig, Franz last_name: Josef Rammig - first_name: Wilhelm full_name: Schäfer, Wilhelm last_name: Schäfer - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: Gausemeier J, Josef Rammig F, Schäfer W, Sextro W. Dependability of Self-Optimizing Mechatronic Systems. Vol Lecture Notes in Mechanical Engineering. Springer Berlin Heidelberg; 2014. apa: Gausemeier, J., Josef Rammig, F., Schäfer, W., & Sextro, W. (2014). Dependability of Self-Optimizing Mechatronic Systems (Vol. Lecture Notes in Mechanical Engineering). Springer Berlin Heidelberg. bibtex: '@book{Gausemeier_Josef Rammig_Schäfer_Sextro_2014, title={Dependability of Self-Optimizing Mechatronic Systems}, volume={Lecture Notes in Mechanical Engineering}, publisher={Springer Berlin Heidelberg}, author={Gausemeier, Jürgen and Josef Rammig, Franz and Schäfer, Wilhelm and Sextro, Walter}, year={2014} }' chicago: Gausemeier, Jürgen, Franz Josef Rammig, Wilhelm Schäfer, and Walter Sextro. Dependability of Self-Optimizing Mechatronic Systems. Vol. Lecture Notes in Mechanical Engineering. Springer Berlin Heidelberg, 2014. ieee: J. Gausemeier, F. Josef Rammig, W. Schäfer, and W. Sextro, Dependability of Self-Optimizing Mechatronic Systems, vol. Lecture Notes in Mechanical Engineering. Springer Berlin Heidelberg, 2014. mla: Gausemeier, Jürgen, et al. Dependability of Self-Optimizing Mechatronic Systems. Vol. Lecture Notes in Mechanical Engineering, Springer Berlin Heidelberg, 2014. short: J. Gausemeier, F. Josef Rammig, W. Schäfer, W. Sextro, Dependability of Self-Optimizing Mechatronic Systems, Springer Berlin Heidelberg, 2014. date_created: 2019-05-20T12:57:54Z date_updated: 2019-05-20T13:00:58Z department: - _id: '151' language: - iso: eng publisher: Springer Berlin Heidelberg status: public title: Dependability of Self-Optimizing Mechatronic Systems type: book user_id: '55222' volume: Lecture Notes in Mechanical Engineering year: '2014' ... --- _id: '9874' author: - first_name: Tobias full_name: Hemsel, Tobias id: '210' last_name: Hemsel - first_name: Peter full_name: Bornmann, Peter last_name: Bornmann - first_name: Takeshi full_name: Morita, Takeshi last_name: Morita - first_name: Christoph full_name: Sondermann-Wölke, Christoph last_name: Sondermann-Wölke - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: Hemsel T, Bornmann P, Morita T, Sondermann-Wölke C, Sextro W. Reliability analysis of ultrasonic power transducers. Archive of Applied Mechanics. 2014:1-7. doi:10.1007/s00419-014-0965-4 apa: Hemsel, T., Bornmann, P., Morita, T., Sondermann-Wölke, C., & Sextro, W. (2014). Reliability analysis of ultrasonic power transducers. Archive of Applied Mechanics, 1–7. https://doi.org/10.1007/s00419-014-0965-4 bibtex: '@article{Hemsel_Bornmann_Morita_Sondermann-Wölke_Sextro_2014, title={Reliability analysis of ultrasonic power transducers}, DOI={10.1007/s00419-014-0965-4}, journal={Archive of Applied Mechanics}, publisher={Springer Berlin Heidelberg}, author={Hemsel, Tobias and Bornmann, Peter and Morita, Takeshi and Sondermann-Wölke, Christoph and Sextro, Walter}, year={2014}, pages={1–7} }' chicago: Hemsel, Tobias, Peter Bornmann, Takeshi Morita, Christoph Sondermann-Wölke, and Walter Sextro. “Reliability Analysis of Ultrasonic Power Transducers.” Archive of Applied Mechanics, 2014, 1–7. https://doi.org/10.1007/s00419-014-0965-4. ieee: T. Hemsel, P. Bornmann, T. Morita, C. Sondermann-Wölke, and W. Sextro, “Reliability analysis of ultrasonic power transducers,” Archive of Applied Mechanics, pp. 1–7, 2014. mla: Hemsel, Tobias, et al. “Reliability Analysis of Ultrasonic Power Transducers.” Archive of Applied Mechanics, Springer Berlin Heidelberg, 2014, pp. 1–7, doi:10.1007/s00419-014-0965-4. short: T. Hemsel, P. Bornmann, T. Morita, C. Sondermann-Wölke, W. Sextro, Archive of Applied Mechanics (2014) 1–7. date_created: 2019-05-20T13:01:25Z date_updated: 2019-09-16T10:57:23Z department: - _id: '151' doi: 10.1007/s00419-014-0965-4 keyword: - Reliability - Ultrasonic power transducers - FMEA language: - iso: eng page: 1-7 publication: Archive of Applied Mechanics publication_identifier: issn: - 0939-1533 publisher: Springer Berlin Heidelberg quality_controlled: '1' status: public title: Reliability analysis of ultrasonic power transducers type: journal_article user_id: '55222' year: '2014' ... --- _id: '9876' abstract: - lang: eng text: Piezoelectric inertia motors use the inertia of a body to drive it by means of a friction contact in a series of small steps. It has been shown previously in theoretical investigations that higher velocities and smoother movements can be obtained if these steps do not contain phases of stiction (''stick-slip`` operation), but use sliding friction only (''slip-slip`` operation). One very promising driving option for such motors is the superposition of multiple sinusoidal signals or harmonics. In this contribution, the theoretical results are validated experimentally. In this context, a quick and reliable identification process for parameters describing the friction contact is proposed. Additionally, the force generation potential of inertia motors is investigated theoretically and experimentally. The experimental results confirm the theoretical result that for a given maximum frequency, a signal with a high fundamental frequency and consisting of two superposed sine waves leads to the highest velocity and the smoothest motion, while the maximum motor force is obtained with signals containing more harmonics. These results are of fundamental importance for the further development of high-velocity piezoelectric inertia motors. author: - first_name: Matthias full_name: Hunstig, Matthias last_name: Hunstig - 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: 'Hunstig M, Hemsel T, Sextro W. High-velocity operation of piezoelectric inertia motors: experimental validation. Archive of Applied Mechanics. 2014:1-9. doi:10.1007/s00419-014-0940-0' apa: 'Hunstig, M., Hemsel, T., & Sextro, W. (2014). High-velocity operation of piezoelectric inertia motors: experimental validation. Archive of Applied Mechanics, 1–9. https://doi.org/10.1007/s00419-014-0940-0' bibtex: '@article{Hunstig_Hemsel_Sextro_2014, title={High-velocity operation of piezoelectric inertia motors: experimental validation}, DOI={10.1007/s00419-014-0940-0}, journal={Archive of Applied Mechanics}, publisher={Springer Berlin Heidelberg}, author={Hunstig, Matthias and Hemsel, Tobias and Sextro, Walter}, year={2014}, pages={1–9} }' chicago: 'Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “High-Velocity Operation of Piezoelectric Inertia Motors: Experimental Validation.” Archive of Applied Mechanics, 2014, 1–9. https://doi.org/10.1007/s00419-014-0940-0.' ieee: 'M. Hunstig, T. Hemsel, and W. Sextro, “High-velocity operation of piezoelectric inertia motors: experimental validation,” Archive of Applied Mechanics, pp. 1–9, 2014.' mla: 'Hunstig, Matthias, et al. “High-Velocity Operation of Piezoelectric Inertia Motors: Experimental Validation.” Archive of Applied Mechanics, Springer Berlin Heidelberg, 2014, pp. 1–9, doi:10.1007/s00419-014-0940-0.' short: M. Hunstig, T. Hemsel, W. Sextro, Archive of Applied Mechanics (2014) 1–9. date_created: 2019-05-20T13:08:08Z date_updated: 2019-05-20T13:08:43Z department: - _id: '151' doi: 10.1007/s00419-014-0940-0 keyword: - Inertia motor - High velocity - Stick-slip motor - Slip-slip operation - Friction parameter identification language: - iso: eng page: 1-9 publication: Archive of Applied Mechanics publication_identifier: issn: - 0939-1533 publisher: Springer Berlin Heidelberg status: public title: 'High-velocity operation of piezoelectric inertia motors: experimental validation' type: journal_article user_id: '55222' year: '2014' ... --- _id: '9878' abstract: - lang: eng text: (K,Na)NbO3 ceramics have attracted much attention as lead-free piezoelectric materials with high piezoelectric properties. High-quality (K,Na)NbO3 ceramics can be sintered using KNbO3 and NaNbO3 powders synthesized by a hydrothermal method. In this study, to enhance the quality factor of the ceramics, high-power ultrasonic irradiation was employed during the hydrothermal method, which led to a reduction in the particle size of the resultant powders. author: - first_name: G. full_name: Isobe, G. last_name: Isobe - first_name: Takafumi full_name: Maeda, Takafumi last_name: Maeda - first_name: Peter full_name: Bornmann, Peter last_name: Bornmann - first_name: Tobias full_name: Hemsel, Tobias id: '210' last_name: Hemsel - first_name: Takeshi full_name: Morita, Takeshi last_name: Morita citation: ama: Isobe G, Maeda T, Bornmann P, Hemsel T, Morita T. Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics. Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on. 2014;61(2):225-230. doi:10.1109/TUFFC.2014.6722608 apa: Isobe, G., Maeda, T., Bornmann, P., Hemsel, T., & Morita, T. (2014). Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics. Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions On, 61(2), 225–230. https://doi.org/10.1109/TUFFC.2014.6722608 bibtex: '@article{Isobe_Maeda_Bornmann_Hemsel_Morita_2014, title={Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics}, volume={61}, DOI={10.1109/TUFFC.2014.6722608}, number={2}, journal={Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on}, author={Isobe, G. and Maeda, Takafumi and Bornmann, Peter and Hemsel, Tobias and Morita, Takeshi}, year={2014}, pages={225–230} }' chicago: 'Isobe, G., Takafumi Maeda, Peter Bornmann, Tobias Hemsel, and Takeshi Morita. “Synthesis of Lead-Free Piezoelectric Powders by Ultrasonic-Assisted Hydrothermal Method and Properties of Sintered (K0.48Na0.52)NBO3 Ceramics.” Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions On 61, no. 2 (2014): 225–30. https://doi.org/10.1109/TUFFC.2014.6722608.' ieee: G. Isobe, T. Maeda, P. Bornmann, T. Hemsel, and T. Morita, “Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics,” Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on, vol. 61, no. 2, pp. 225–230, 2014. mla: Isobe, G., et al. “Synthesis of Lead-Free Piezoelectric Powders by Ultrasonic-Assisted Hydrothermal Method and Properties of Sintered (K0.48Na0.52)NBO3 Ceramics.” Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions On, vol. 61, no. 2, 2014, pp. 225–30, doi:10.1109/TUFFC.2014.6722608. short: G. Isobe, T. Maeda, P. Bornmann, T. Hemsel, T. Morita, Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions On 61 (2014) 225–230. date_created: 2019-05-20T13:10:14Z date_updated: 2019-09-16T10:53:17Z department: - _id: '151' doi: 10.1109/TUFFC.2014.6722608 intvolume: ' 61' issue: '2' keyword: - Q-factor - ceramics - crystal growth from solution - particle size - piezoelectric materials - potassium compounds - powders - sintering - sodium compounds - ultrasonic effects - (K0.48Na0.52)NbO3 - KNbO3 powders - NaNbO3 powders - high-power ultrasonic irradiation - lead-free piezoelectric materials - lead-free piezoelectric powders - particle size reduction - piezoelectric properties - quality factor - sintered (K0.48Na0.52)NbO3 ceramics - sintering - ultrasonic-assisted hydrothermal method - Acoustics - Ceramics - Lead - Piezoelectric materials - Powders - Radiation effects - Transducers language: - iso: eng page: 225-230 publication: Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on publication_identifier: issn: - 0885-3010 quality_controlled: '1' status: public title: Synthesis of lead-free piezoelectric powders by ultrasonic-assisted hydrothermal method and properties of sintered (K0.48Na0.52)NBO3 ceramics type: journal_article user_id: '55222' volume: 61 year: '2014' ... --- _id: '9879' abstract: - lang: eng text: Application of prognostics and health management (PHM) in the field of Proton Exchange Membrane (PEM) fuel cells is emerging as an important tool in increasing the reliability and availability of these systems. Though a lot of work is currently being conducted to develop PHM systems for fuel cells, various challenges have been encountered including the self-healing effect after characterization as well as accelerated degradation due to dynamic loading, all which make RUL predictions a difficult task. In this study, a prognostic approach based on adaptive particle filter algorithm is proposed. The novelty of the proposed method lies in the introduction of a self-healing factor after each characterization and the adaption of the degradation model parameters to fit to the changing degradation trend. An ensemble of five different state models based on weighted mean is then developed. The results show that the method is effective in estimating the remaining useful life of PEM fuel cells, with majority of the predictions falling within 5\% error. The method was employed in the IEEE 2014 PHM Data Challenge and led to our team emerging the winner of the RUL category of the challenge. author: - first_name: 'James Kuria ' full_name: 'Kimotho, James Kuria ' last_name: Kimotho - first_name: Tobias full_name: Meyer, Tobias last_name: Meyer - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: 'Kimotho JK, Meyer T, Sextro W. PEM fuel cell prognostics using particle filter with model parameter adaptation. In: Prognostics and Health Management (PHM), 2014 IEEE Conference On. ; 2014:1-6. doi:10.1109/ICPHM.2014.7036406' apa: Kimotho, J. K., Meyer, T., & Sextro, W. (2014). PEM fuel cell prognostics using particle filter with model parameter adaptation. In Prognostics and Health Management (PHM), 2014 IEEE Conference on (pp. 1–6). https://doi.org/10.1109/ICPHM.2014.7036406 bibtex: '@inproceedings{Kimotho_Meyer_Sextro_2014, title={PEM fuel cell prognostics using particle filter with model parameter adaptation}, DOI={10.1109/ICPHM.2014.7036406}, booktitle={Prognostics and Health Management (PHM), 2014 IEEE Conference on}, author={Kimotho, James Kuria and Meyer, Tobias and Sextro, Walter}, year={2014}, pages={1–6} }' chicago: Kimotho, James Kuria , Tobias Meyer, and Walter Sextro. “PEM Fuel Cell Prognostics Using Particle Filter with Model Parameter Adaptation.” In Prognostics and Health Management (PHM), 2014 IEEE Conference On, 1–6, 2014. https://doi.org/10.1109/ICPHM.2014.7036406. ieee: J. K. Kimotho, T. Meyer, and W. Sextro, “PEM fuel cell prognostics using particle filter with model parameter adaptation,” in Prognostics and Health Management (PHM), 2014 IEEE Conference on, 2014, pp. 1–6. mla: Kimotho, James Kuria, et al. “PEM Fuel Cell Prognostics Using Particle Filter with Model Parameter Adaptation.” Prognostics and Health Management (PHM), 2014 IEEE Conference On, 2014, pp. 1–6, doi:10.1109/ICPHM.2014.7036406. short: 'J.K. Kimotho, T. Meyer, W. Sextro, in: Prognostics and Health Management (PHM), 2014 IEEE Conference On, 2014, pp. 1–6.' date_created: 2019-05-20T13:11:02Z date_updated: 2019-05-20T13:12:27Z department: - _id: '151' doi: 10.1109/ICPHM.2014.7036406 keyword: - ageing - particle filtering (numerical methods) - proton exchange membrane fuel cells - remaining life assessment - PEM fuel cell prognostics - PHM - RUL predictions - accelerated degradation - adaptive particle filter algorithm - dynamic loading - model parameter adaptation - prognostics and health management - proton exchange membrane fuel cells - remaining useful life estimation - self-healing effect - Adaptation models - Data models - Degradation - Estimation - Fuel cells - Mathematical model - Prognostics and health management language: - iso: eng page: 1-6 publication: Prognostics and Health Management (PHM), 2014 IEEE Conference on status: public title: PEM fuel cell prognostics using particle filter with model parameter adaptation type: conference user_id: '55222' year: '2014' ... --- _id: '9880' abstract: - lang: eng text: With the paradigm shift towards prognostic and health management (PHM) of machinery, there is need for reliable PHM methodologies with narrow error bounds to allow maintenance engineers take decisive maintenance actions based on the prognostic results. Prognostics is mainly concerned with the estimation of the remaining useful life (RUL) or time to failure (TTF). The accuracy of PHM methods is usually a function of the features extracted from the raw data obtained from sensors. In cases where the extracted features do not display clear degradation trends, for instance highly loaded bearings, the accuracy of the state of the art PHM methods is significantly affected. The data which lacks clear degradation trend is referred to as non-trending data. This study presents a method for extracting degradation trends from non-trending condition monitoring data for RUL estimation. The raw signals are first filtered using a discrete wavelet transform (DWT) denoising filter to remove noise from the acquired signals. Time domain, frequency domain and time-frequency domain features are then extracted from the filtered signals. An autoregressive model is then applied to the extracted features to identify the degradation trends. Features representing the maximum health information are then selected based on a performance evaluation criteria using extreme learning machine (ELM) algorithm. The selected features can then be used as inputs in a prognostic algorithm. The feasibility of the method is demonstrated using experimental bearing vibration data. The performance of the method is evaluated on the accuracy of RUL estimation and the results show that the method can be used to accurately estimate RUL with a maximum error of 10\%. author: - first_name: James Kuria full_name: Kimotho, James Kuria last_name: Kimotho - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: 'Kimotho JK, Sextro W. An approach for feature extraction and selection from non-trending data for machinery prognosis. In: Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014. Vol 5. ; 2014.' apa: Kimotho, J. K., & Sextro, W. (2014). An approach for feature extraction and selection from non-trending data for machinery prognosis. In Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014 (Vol. 5). bibtex: '@inproceedings{Kimotho_Sextro_2014, title={An approach for feature extraction and selection from non-trending data for machinery prognosis}, volume={5}, booktitle={Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014}, author={Kimotho, James Kuria and Sextro, Walter}, year={2014} }' chicago: Kimotho, James Kuria, and Walter Sextro. “An Approach for Feature Extraction and Selection from Non-Trending Data for Machinery Prognosis.” In Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014, Vol. 5, 2014. ieee: J. K. Kimotho and W. Sextro, “An approach for feature extraction and selection from non-trending data for machinery prognosis,” in Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014, 2014, vol. 5. mla: Kimotho, James Kuria, and Walter Sextro. “An Approach for Feature Extraction and Selection from Non-Trending Data for Machinery Prognosis.” Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014, vol. 5, 2014. short: 'J.K. Kimotho, W. Sextro, in: Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014, 2014.' date_created: 2019-05-20T13:13:00Z date_updated: 2019-09-16T10:37:35Z department: - _id: '151' intvolume: ' 5' keyword: - autoregressive model ELM feature extraction feature selection non-trending Remaining useful Life language: - iso: eng publication: Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014 quality_controlled: '1' status: public title: An approach for feature extraction and selection from non-trending data for machinery prognosis type: conference user_id: '55222' volume: 5 year: '2014' ... --- _id: '9881' abstract: - lang: eng text: The increasing demand for high reliability, safety and availability of technical systems calls for innovative maintenance strategies. The use of prognostic health management (PHM) approach where maintenance action is taken based on current and future health state of a component or system is rapidly gaining popularity in the maintenance industry. Multiclass support vector machines (MC-SVM) has been identified as a promising algorithm in PHM applications due to its high classification accuracy. However, it requires parameter tuning for each application, with the objective of minimizing the classification error. This is a single objective optimization problem which requires the use of optimization algorithms that are capable of exhaustively searching for the global optimum parameters. This work proposes the use of hybrid differential evolution (DE) and particle swarm optimization (PSO) in optimally tuning the MC-SVM parameters. DE identifies the search limit of the parameters while PSO finds the global optimum within the search limit. The feasibility of the approach is verified using bearing run-to-failure data and the results show that the proposed method significantly increases health state classification accuracy. author: - first_name: James Kuria full_name: Kimotho, James Kuria last_name: Kimotho - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: Kimotho JK, Sextro W. Optimal Parameter Tuning for Multiclass Support Vector Machines in Machinery Health State Estimation. PAMM. 2014;14(1):815-816. doi:10.1002/pamm.201410388 apa: Kimotho, J. K., & Sextro, W. (2014). Optimal Parameter Tuning for Multiclass Support Vector Machines in Machinery Health State Estimation. PAMM, 14(1), 815–816. https://doi.org/10.1002/pamm.201410388 bibtex: '@article{Kimotho_Sextro_2014, title={Optimal Parameter Tuning for Multiclass Support Vector Machines in Machinery Health State Estimation}, volume={14}, DOI={10.1002/pamm.201410388}, number={1}, journal={PAMM}, publisher={WILEY-VCH Verlag}, author={Kimotho, James Kuria and Sextro, Walter}, year={2014}, pages={815–816} }' chicago: 'Kimotho, James Kuria, and Walter Sextro. “Optimal Parameter Tuning for Multiclass Support Vector Machines in Machinery Health State Estimation.” PAMM 14, no. 1 (2014): 815–16. https://doi.org/10.1002/pamm.201410388.' ieee: J. K. Kimotho and W. Sextro, “Optimal Parameter Tuning for Multiclass Support Vector Machines in Machinery Health State Estimation,” PAMM, vol. 14, no. 1, pp. 815–816, 2014. mla: Kimotho, James Kuria, and Walter Sextro. “Optimal Parameter Tuning for Multiclass Support Vector Machines in Machinery Health State Estimation.” PAMM, vol. 14, no. 1, WILEY-VCH Verlag, 2014, pp. 815–16, doi:10.1002/pamm.201410388. short: J.K. Kimotho, W. Sextro, PAMM 14 (2014) 815–816. date_created: 2019-05-20T13:14:17Z date_updated: 2019-05-20T13:15:00Z department: - _id: '151' doi: 10.1002/pamm.201410388 intvolume: ' 14' issue: '1' language: - iso: eng page: 815-816 publication: PAMM publication_identifier: issn: - 1617-7061 publisher: WILEY-VCH Verlag status: public title: Optimal Parameter Tuning for Multiclass Support Vector Machines in Machinery Health State Estimation type: journal_article user_id: '55222' volume: 14 year: '2014' ... --- _id: '9882' abstract: - lang: eng text: An automotive suspension system represents one of the most complex and important systems in a passenger vehicle, which has to ensure a robust and optimized contact between the wheels and the road at any time. For improving a suspension system it is important to take an investigative look at the interaction between suspension, tire and road dynamics. Thus a part of a study into aspects of suspension modeling on multi-body simulations of rear multi-link suspension system dynamics with focus on the tire footprint area is presented in this work. author: - first_name: Sergej full_name: Kohl, Sergej last_name: Kohl - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro - first_name: Armin full_name: Zuber, Armin last_name: Zuber citation: ama: Kohl S, Sextro W, Zuber A. Tire footprint analysis depending on the elastokinematics of a multi-link suspension system using multi-body dynamics simulation. PAMM. 2014;14(1):65-66. doi:10.1002/pamm.201410020 apa: Kohl, S., Sextro, W., & Zuber, A. (2014). Tire footprint analysis depending on the elastokinematics of a multi-link suspension system using multi-body dynamics simulation. PAMM, 14(1), 65–66. https://doi.org/10.1002/pamm.201410020 bibtex: '@article{Kohl_Sextro_Zuber_2014, title={Tire footprint analysis depending on the elastokinematics of a multi-link suspension system using multi-body dynamics simulation}, volume={14}, DOI={10.1002/pamm.201410020}, number={1}, journal={PAMM}, publisher={WILEY-VCH Verlag}, author={Kohl, Sergej and Sextro, Walter and Zuber, Armin}, year={2014}, pages={65–66} }' chicago: 'Kohl, Sergej, Walter Sextro, and Armin Zuber. “Tire Footprint Analysis Depending on the Elastokinematics of a Multi-Link Suspension System Using Multi-Body Dynamics Simulation.” PAMM 14, no. 1 (2014): 65–66. https://doi.org/10.1002/pamm.201410020.' ieee: S. Kohl, W. Sextro, and A. Zuber, “Tire footprint analysis depending on the elastokinematics of a multi-link suspension system using multi-body dynamics simulation,” PAMM, vol. 14, no. 1, pp. 65–66, 2014. mla: Kohl, Sergej, et al. “Tire Footprint Analysis Depending on the Elastokinematics of a Multi-Link Suspension System Using Multi-Body Dynamics Simulation.” PAMM, vol. 14, no. 1, WILEY-VCH Verlag, 2014, pp. 65–66, doi:10.1002/pamm.201410020. short: S. Kohl, W. Sextro, A. Zuber, PAMM 14 (2014) 65–66. date_created: 2019-05-20T13:15:27Z date_updated: 2019-05-20T13:16:20Z department: - _id: '151' doi: 10.1002/pamm.201410020 intvolume: ' 14' issue: '1' language: - iso: eng page: 65-66 publication: PAMM publication_identifier: issn: - 1617-7061 publisher: WILEY-VCH Verlag status: public title: Tire footprint analysis depending on the elastokinematics of a multi-link suspension system using multi-body dynamics simulation type: journal_article user_id: '55222' volume: 14 year: '2014' ... --- _id: '9883' author: - first_name: Tobias full_name: Meyer, Tobias last_name: Meyer - first_name: Claudia full_name: Priesterjahn, Claudia last_name: Priesterjahn - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: 'Meyer T, Priesterjahn C, Sextro W. Conclusion and Outlook. In: Gausemeier J, Josef Rammig F, Schäfer W, Sextro W, eds. Dependability of Self-Optimizing Mechatronic Systems. Lecture Notes in Mechanical Engineering. Springer Berlin Heidelberg; 2014:189-190. doi:10.1007/978-3-642-53742-4_5' apa: Meyer, T., Priesterjahn, C., & Sextro, W. (2014). Conclusion and Outlook. In J. Gausemeier, F. Josef Rammig, W. Schäfer, & W. Sextro (Eds.), Dependability of Self-Optimizing Mechatronic Systems (pp. 189–190). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-53742-4_5 bibtex: '@inbook{Meyer_Priesterjahn_Sextro_2014, series={Lecture Notes in Mechanical Engineering}, title={Conclusion and Outlook}, DOI={10.1007/978-3-642-53742-4_5}, booktitle={Dependability of Self-Optimizing Mechatronic Systems}, publisher={Springer Berlin Heidelberg}, author={Meyer, Tobias and Priesterjahn, Claudia and Sextro, Walter}, editor={Gausemeier, Jürgen and Josef Rammig, Franz and Schäfer, Wilhelm and Sextro, WalterEditors}, year={2014}, pages={189–190}, collection={Lecture Notes in Mechanical Engineering} }' chicago: Meyer, Tobias, Claudia Priesterjahn, and Walter Sextro. “Conclusion and Outlook.” In Dependability of Self-Optimizing Mechatronic Systems, edited by Jürgen Gausemeier, Franz Josef Rammig, Wilhelm Schäfer, and Walter Sextro, 189–90. Lecture Notes in Mechanical Engineering. Springer Berlin Heidelberg, 2014. https://doi.org/10.1007/978-3-642-53742-4_5. ieee: T. Meyer, C. Priesterjahn, and W. Sextro, “Conclusion and Outlook,” in Dependability of Self-Optimizing Mechatronic Systems, J. Gausemeier, F. Josef Rammig, W. Schäfer, and W. Sextro, Eds. Springer Berlin Heidelberg, 2014, pp. 189–190. mla: Meyer, Tobias, et al. “Conclusion and Outlook.” Dependability of Self-Optimizing Mechatronic Systems, edited by Jürgen Gausemeier et al., Springer Berlin Heidelberg, 2014, pp. 189–90, doi:10.1007/978-3-642-53742-4_5. short: 'T. Meyer, C. Priesterjahn, W. Sextro, in: J. Gausemeier, F. Josef Rammig, W. Schäfer, W. Sextro (Eds.), Dependability of Self-Optimizing Mechatronic Systems, Springer Berlin Heidelberg, 2014, pp. 189–190.' date_created: 2019-05-20T13:16:42Z date_updated: 2019-05-20T13:17:43Z department: - _id: '151' doi: 10.1007/978-3-642-53742-4_5 editor: - first_name: Jürgen full_name: Gausemeier, Jürgen last_name: Gausemeier - first_name: Franz full_name: Josef Rammig, Franz last_name: Josef Rammig - first_name: Wilhelm full_name: Schäfer, Wilhelm last_name: Schäfer - first_name: Walter full_name: Sextro, Walter last_name: Sextro language: - iso: eng page: 189-190 publication: Dependability of Self-Optimizing Mechatronic Systems publication_identifier: isbn: - 978-3-642-53741-7 publisher: Springer Berlin Heidelberg series_title: Lecture Notes in Mechanical Engineering status: public title: Conclusion and Outlook type: book_chapter user_id: '55222' year: '2014' ... --- _id: '9884' abstract: - lang: eng text: So-called reliability adaptive systems are able to adapt their system behavior based on the current reliability of the system. This allows them to react to changed operating conditions or faults within the system that change the degradation behavior. To implement such reliability adaptation, self-optimization can be used. A self-optimizing system pursues objectives, of which the priorities can be changed at runtime, in turn changing the system behavior. When including system reliability as an objective of the system, it becomes possible to change the system based on the current reliability as well. This capability can be used to control the reliability of the system throughout its operation period in order to achieve a pre-defined or user-selectable system lifetime. This way, optimal planning of maintenance intervals is possible while also using the system capabilities to their full extent. Our proposed control system makes it possible to react to changed degradation behavior by selecting objectives of the self-optimizing system and in turn changing the operating parameters in a closed loop. A two-stage controller is designed which is used to select the currently required priorities of the objectives in order to fulfill the desired usable lifetime. Investigations using a model of an automotive clutch system serve to demonstrate the feasibility of our controller. It is shown that the desired lifetime can be achieved reliably. author: - first_name: Tobias full_name: Meyer , Tobias last_name: 'Meyer ' - first_name: Walter full_name: Sextro, Walter last_name: Sextro citation: ama: 'Meyer T, Sextro W. Closed-loop Control System for the Reliability of Intelligent Mechatronic Systems. In: Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014. Vol 5. ; 2014.' apa: Meyer , T., & Sextro, W. (2014). Closed-loop Control System for the Reliability of Intelligent Mechatronic Systems. In Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014 (Vol. 5). bibtex: '@inproceedings{Meyer _Sextro_2014, title={Closed-loop Control System for the Reliability of Intelligent Mechatronic Systems}, volume={5}, booktitle={Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014}, author={Meyer , Tobias and Sextro, Walter}, year={2014} }' chicago: Meyer , Tobias, and Walter Sextro. “Closed-Loop Control System for the Reliability of Intelligent Mechatronic Systems.” In Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014, Vol. 5, 2014. ieee: T. Meyer and W. Sextro, “Closed-loop Control System for the Reliability of Intelligent Mechatronic Systems,” in Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014, 2014, vol. 5. mla: Meyer , Tobias, and Walter Sextro. “Closed-Loop Control System for the Reliability of Intelligent Mechatronic Systems.” Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014, vol. 5, 2014. short: 'T. Meyer , W. Sextro, in: Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014, 2014.' date_created: 2019-05-20T13:18:20Z date_updated: 2019-05-20T13:19:08Z department: - _id: '151' intvolume: ' 5' keyword: - self-optimization reliability adaptive language: - iso: eng publication: Proceedings of the Second European Conference of the Prognostics and Health Management Society 2014 status: public title: Closed-loop Control System for the Reliability of Intelligent Mechatronic Systems type: conference user_id: '55222' volume: 5 year: '2014' ... --- _id: '9885' abstract: - lang: eng text: Intelligent mechatronic systems, such as self-optimizing systems, allow an adaptation of the system behavior at runtime based on the current situation. To do so, they generally select among several pre-defined working points. A common method to determine working points for a mechatronic system is to use model-based multiobjective optimization. It allows finding compromises among conflicting objectives, called objective functions, by adapting parameters. To evaluate the system behavior for different parameter sets, a model of the system behavior is included in the objective functions and is evaluated during each function call. Intelligent mechatronic systems also have the ability to adapt their behavior based on their current reliability, thus increasing their availability, or on changed safety requirements; all of which are summed up by the common term dependability. To allow this adaptation, dependability can be considered in multiobjective optimization by including dependability-related objective functions. However, whereas performance-related objective functions are easily found, formulation of dependability-related objective functions is highly system-specific and not intuitive, making it complex and error-prone. Since each mechatronic system is different, individual failure modes have to be taken into account, which need to be found using common methods such as Failure-Modes and Effects Analysis or Fault Tree Analysis. Using component degradation models, which again are specific to the system at hand, the main loading factors can be determined. By including these in the model of the system behavior, the relation between working point and dependability can be formulated as an objective function. In our work, this approach is presented in more detail. It is exemplified using an actively actuated single plate dry clutch system. Results show that this approach is suitable for formulating dependability-related objective functions and that these can be used to extend system lifetime by adapting system behavior. author: - first_name: Tobias full_name: Meyer , Tobias last_name: 'Meyer ' - first_name: Christoph full_name: Sondermann-Wölke, Christoph last_name: Sondermann-Wölke - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: Meyer T, Sondermann-Wölke C, Sextro W. Method to Identify Dependability Objectives in Multiobjective Optimization Problem. Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence. 2014;15:46-53. doi:10.1016/j.protcy.2014.09.033 apa: Meyer , T., Sondermann-Wölke, C., & Sextro, W. (2014). Method to Identify Dependability Objectives in Multiobjective Optimization Problem. Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence, 15, 46–53. https://doi.org/10.1016/j.protcy.2014.09.033 bibtex: '@article{Meyer _Sondermann-Wölke_Sextro_2014, title={Method to Identify Dependability Objectives in Multiobjective Optimization Problem}, volume={15}, DOI={10.1016/j.protcy.2014.09.033}, journal={Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence}, author={Meyer , Tobias and Sondermann-Wölke, Christoph and Sextro, Walter}, year={2014}, pages={46–53} }' chicago: 'Meyer , Tobias, Christoph Sondermann-Wölke, and Walter Sextro. “Method to Identify Dependability Objectives in Multiobjective Optimization Problem.” Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence 15 (2014): 46–53. https://doi.org/10.1016/j.protcy.2014.09.033.' ieee: T. Meyer , C. Sondermann-Wölke, and W. Sextro, “Method to Identify Dependability Objectives in Multiobjective Optimization Problem,” Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence, vol. 15, pp. 46–53, 2014. mla: Meyer , Tobias, et al. “Method to Identify Dependability Objectives in Multiobjective Optimization Problem.” Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence, vol. 15, 2014, pp. 46–53, doi:10.1016/j.protcy.2014.09.033. short: T. Meyer , C. Sondermann-Wölke, W. Sextro, Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence 15 (2014) 46–53. date_created: 2019-05-20T13:19:37Z date_updated: 2019-09-16T10:22:04Z department: - _id: '151' doi: 10.1016/j.protcy.2014.09.033 intvolume: ' 15' keyword: - Self-optimization - multiobjective optimization - objective function - dependability - intelligent system - behavior adaptation language: - iso: eng page: 46-53 publication: Conference Proceedings of the 2nd International Conference on System-Integrated Intelligence quality_controlled: '1' status: public title: Method to Identify Dependability Objectives in Multiobjective Optimization Problem type: journal_article user_id: '55222' volume: 15 year: '2014' ... --- _id: '9887' abstract: - lang: eng text: A model to calculate the locally resolved tangential contact forces of the wheel rail contact with respect to contact kinematics, material and surface properties as well as temperature is introduced. The elasticity of wheel and rail is modeled as an elastic layer consisting of point contact elements connected by springs to each other and to the wheel. Each element has two degrees of freedom in tangential directions. The resulting total stiffness matrix is reduced to calculate only the position of the elements in contact. Friction forces as well as contact stiffnesses are incorporated by a nonlinear force-displacement characteristic, which originates from a detailed contact model. The contact elements are transported through the contact zone in discrete time steps. After each time step an equilibrium is calculated. For all elements, their temperature and its influence on local friction are regarded by calculating friction power and temperature each time step. author: - first_name: Jan full_name: Neuhaus, Jan last_name: Neuhaus - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: 'Neuhaus J, Sextro W. Thermo-Mechanical Model for Wheel Rail Contact using Coupled Point Contact Elements. In: Liu GR, Guan ZW, eds. Proceedings of the 5th International Conference on Computational Methods. ScienTech Publisher; 2014.' apa: Neuhaus, J., & Sextro, W. (2014). Thermo-Mechanical Model for Wheel Rail Contact using Coupled Point Contact Elements. In G. R. Liu & Z. W. Guan (Eds.), Proceedings of the 5th International Conference on Computational Methods. ScienTech Publisher. bibtex: '@inproceedings{Neuhaus_Sextro_2014, title={Thermo-Mechanical Model for Wheel Rail Contact using Coupled Point Contact Elements}, booktitle={Proceedings of the 5th International Conference on Computational Methods}, publisher={ScienTech Publisher}, author={Neuhaus, Jan and Sextro, Walter}, editor={Liu, G.R. and Guan, Z.W.Editors}, year={2014} }' chicago: Neuhaus, Jan, and Walter Sextro. “Thermo-Mechanical Model for Wheel Rail Contact Using Coupled Point Contact Elements.” In Proceedings of the 5th International Conference on Computational Methods, edited by G.R. Liu and Z.W. Guan. ScienTech Publisher, 2014. ieee: J. Neuhaus and W. Sextro, “Thermo-Mechanical Model for Wheel Rail Contact using Coupled Point Contact Elements,” in Proceedings of the 5th International Conference on Computational Methods, 2014. mla: Neuhaus, Jan, and Walter Sextro. “Thermo-Mechanical Model for Wheel Rail Contact Using Coupled Point Contact Elements.” Proceedings of the 5th International Conference on Computational Methods, edited by G.R. Liu and Z.W. Guan, ScienTech Publisher, 2014. short: 'J. Neuhaus, W. Sextro, in: G.R. Liu, Z.W. Guan (Eds.), Proceedings of the 5th International Conference on Computational Methods, ScienTech Publisher, 2014.' date_created: 2019-05-20T13:23:02Z date_updated: 2019-09-16T10:59:46Z department: - _id: '151' editor: - first_name: G.R. full_name: Liu, G.R. last_name: Liu - first_name: Z.W. full_name: Guan, Z.W. last_name: Guan keyword: - Rolling Contact - Discrete Elements - Contact Stiffness - Temperature language: - iso: eng publication: Proceedings of the 5th International Conference on Computational Methods publisher: ScienTech Publisher quality_controlled: '1' status: public title: Thermo-Mechanical Model for Wheel Rail Contact using Coupled Point Contact Elements type: conference user_id: '55222' year: '2014' ... --- _id: '9888' abstract: - lang: eng text: This paper discusses the refinement of multibody models by integration of flexible bodies and by considering nonlinearities from contacts. It presents common approaches for contact modeling in multibody simulations and strategies to include flexible bodies. A contact model is implemented in the elastic multibody model. Experimental results show that significant effects of system dynamics can be modeled by use of a multibody model including elastic bodies and contacts. author: - first_name: Sebastian full_name: Schulze, Sebastian last_name: Schulze - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro - first_name: Frank full_name: Grüter, Frank last_name: Grüter citation: ama: Schulze S, Sextro W, Grüter F. Contact Modeling in Multibody Systems with Elastic Bodies in High-Frequency Applications. PAMM. 2014;14(1):39-40. doi:10.1002/pamm.201410012 apa: Schulze, S., Sextro, W., & Grüter, F. (2014). Contact Modeling in Multibody Systems with Elastic Bodies in High-Frequency Applications. PAMM, 14(1), 39–40. https://doi.org/10.1002/pamm.201410012 bibtex: '@article{Schulze_Sextro_Grüter_2014, title={Contact Modeling in Multibody Systems with Elastic Bodies in High-Frequency Applications}, volume={14}, DOI={10.1002/pamm.201410012}, number={1}, journal={PAMM}, publisher={WILEY-VCH Verlag}, author={Schulze, Sebastian and Sextro, Walter and Grüter, Frank}, year={2014}, pages={39–40} }' chicago: 'Schulze, Sebastian, Walter Sextro, and Frank Grüter. “Contact Modeling in Multibody Systems with Elastic Bodies in High-Frequency Applications.” PAMM 14, no. 1 (2014): 39–40. https://doi.org/10.1002/pamm.201410012.' ieee: S. Schulze, W. Sextro, and F. Grüter, “Contact Modeling in Multibody Systems with Elastic Bodies in High-Frequency Applications,” PAMM, vol. 14, no. 1, pp. 39–40, 2014. mla: Schulze, Sebastian, et al. “Contact Modeling in Multibody Systems with Elastic Bodies in High-Frequency Applications.” PAMM, vol. 14, no. 1, WILEY-VCH Verlag, 2014, pp. 39–40, doi:10.1002/pamm.201410012. short: S. Schulze, W. Sextro, F. Grüter, PAMM 14 (2014) 39–40. date_created: 2019-05-20T13:24:00Z date_updated: 2019-05-20T13:24:59Z department: - _id: '151' doi: 10.1002/pamm.201410012 intvolume: ' 14' issue: '1' language: - iso: eng page: 39-40 publication: PAMM publication_identifier: issn: - 1617-7061 publisher: WILEY-VCH Verlag status: public title: Contact Modeling in Multibody Systems with Elastic Bodies in High-Frequency Applications type: journal_article user_id: '55222' volume: 14 year: '2014' ... --- _id: '9889' abstract: - lang: eng text: A measurement method is presented that combines the advantages of the multisine measurement technique with a prediction method for peak bending behavior. This combination allows the analysis of the dynamic behavior of mechanical structures at distinctly reduced measurement durations and has the advantage of reducing high excitation impacts on the structure under test. author: - first_name: Christian full_name: Sprock, Christian last_name: Sprock - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: 'Sprock C, Sextro W. Time-efficient dynamic analysis of structures exhibiting nonlinear peak bending. In: Instrumentation and Measurement Technology Conference (I2MTC) Proceedings, 2014 IEEE International. ; 2014:320-324. doi:10.1109/I2MTC.2014.6860760' apa: Sprock, C., & Sextro, W. (2014). Time-efficient dynamic analysis of structures exhibiting nonlinear peak bending. In Instrumentation and Measurement Technology Conference (I2MTC) Proceedings, 2014 IEEE International (pp. 320–324). https://doi.org/10.1109/I2MTC.2014.6860760 bibtex: '@inproceedings{Sprock_Sextro_2014, title={Time-efficient dynamic analysis of structures exhibiting nonlinear peak bending}, DOI={10.1109/I2MTC.2014.6860760}, booktitle={Instrumentation and Measurement Technology Conference (I2MTC) Proceedings, 2014 IEEE International}, author={Sprock, Christian and Sextro, Walter}, year={2014}, pages={320–324} }' chicago: Sprock, Christian, and Walter Sextro. “Time-Efficient Dynamic Analysis of Structures Exhibiting Nonlinear Peak Bending.” In Instrumentation and Measurement Technology Conference (I2MTC) Proceedings, 2014 IEEE International, 320–24, 2014. https://doi.org/10.1109/I2MTC.2014.6860760. ieee: C. Sprock and W. Sextro, “Time-efficient dynamic analysis of structures exhibiting nonlinear peak bending,” in Instrumentation and Measurement Technology Conference (I2MTC) Proceedings, 2014 IEEE International, 2014, pp. 320–324. mla: Sprock, Christian, and Walter Sextro. “Time-Efficient Dynamic Analysis of Structures Exhibiting Nonlinear Peak Bending.” Instrumentation and Measurement Technology Conference (I2MTC) Proceedings, 2014 IEEE International, 2014, pp. 320–24, doi:10.1109/I2MTC.2014.6860760. short: 'C. Sprock, W. Sextro, in: Instrumentation and Measurement Technology Conference (I2MTC) Proceedings, 2014 IEEE International, 2014, pp. 320–324.' date_created: 2019-05-20T13:25:22Z date_updated: 2019-05-20T13:25:53Z department: - _id: '151' doi: 10.1109/I2MTC.2014.6860760 keyword: - bending - dynamic testing - measurement - structural engineering - vibrations - measurement durations - mechanical structures - multisine measurement technique - nonlinear peak bending behavior - prediction method - time-efficient dynamic analysis - Heuristic algorithms - Nonlinear systems - Oscillators - Time measurement - Time-frequency analysis - Vibrations language: - iso: eng page: 320-324 publication: Instrumentation and Measurement Technology Conference (I2MTC) Proceedings, 2014 IEEE International status: public title: Time-efficient dynamic analysis of structures exhibiting nonlinear peak bending type: conference user_id: '55222' year: '2014' ... --- _id: '9890' abstract: - lang: eng text: Many nonlinear mechanical oscillators show excitation-dependent behavior. In this paper, a new measurement approach is presented to analyze such structures. The main advantage of the presented method is the high efficiency, since measurement duration and loads to the structure are significantly reduced. author: - first_name: Christian full_name: Sprock, Christian last_name: Sprock - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: 'Sprock C, Sextro W. Time-efficient analysis of nonlinear dynamic behavior. In: Proceedings in Applied Mathematics and Mechanics 14 (2014), Nr. 1,. ; 2014:293-294.' apa: Sprock, C., & Sextro, W. (2014). Time-efficient analysis of nonlinear dynamic behavior. In Proceedings in Applied Mathematics and Mechanics 14 (2014), Nr. 1, (pp. 293–294). bibtex: '@inproceedings{Sprock_Sextro_2014, title={Time-efficient analysis of nonlinear dynamic behavior.}, booktitle={Proceedings in Applied Mathematics and Mechanics 14 (2014), Nr. 1,}, author={Sprock, Christian and Sextro, Walter}, year={2014}, pages={293–294} }' chicago: Sprock, Christian, and Walter Sextro. “Time-Efficient Analysis of Nonlinear Dynamic Behavior.” In Proceedings in Applied Mathematics and Mechanics 14 (2014), Nr. 1, 293–94, 2014. ieee: C. Sprock and W. Sextro, “Time-efficient analysis of nonlinear dynamic behavior.,” in Proceedings in Applied Mathematics and Mechanics 14 (2014), Nr. 1, 2014, pp. 293–294. mla: Sprock, Christian, and Walter Sextro. “Time-Efficient Analysis of Nonlinear Dynamic Behavior.” Proceedings in Applied Mathematics and Mechanics 14 (2014), Nr. 1, 2014, pp. 293–94. short: 'C. Sprock, W. Sextro, in: Proceedings in Applied Mathematics and Mechanics 14 (2014), Nr. 1, 2014, pp. 293–294.' date_created: 2019-05-20T13:26:56Z date_updated: 2019-05-20T13:27:29Z department: - _id: '151' language: - iso: eng page: 293-294 publication: Proceedings in Applied Mathematics and Mechanics 14 (2014), Nr. 1, status: public title: Time-efficient analysis of nonlinear dynamic behavior. type: conference user_id: '55222' year: '2014' ... --- _id: '9891' abstract: - lang: eng text: A measurement method is presented that combines the advantages of the multisine measurement technique with a prediction method for peak bending behavior. This combination allows the analysis of the dynamic behavior of mechanical structures at distinctly reduced measurement durations and has the advantage of reducing high excitation impacts on the structure under test. After a brief presentation of the algorithm, the validity scope of the approach is investigated with emphasis on an exemplary error investigation. author: - first_name: Christian full_name: Sprock, Christian last_name: Sprock - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: 'Sprock C, Sextro W. Time-efficient analysis of nonlinear peak bending behavior. In: Proceedings of ISMA - International Conference of Noise and Vibration. 2014. ; 2014:1-8.' apa: Sprock, C., & Sextro, W. (2014). Time-efficient analysis of nonlinear peak bending behavior. In Proceedings of ISMA - International Conference of Noise and Vibration. 2014 (pp. 1–8). bibtex: '@inproceedings{Sprock_Sextro_2014, title={Time-efficient analysis of nonlinear peak bending behavior.}, booktitle={Proceedings of ISMA - International Conference of Noise and Vibration. 2014}, author={Sprock, Christian and Sextro, Walter}, year={2014}, pages={1–8} }' chicago: Sprock, Christian, and Walter Sextro. “Time-Efficient Analysis of Nonlinear Peak Bending Behavior.” In Proceedings of ISMA - International Conference of Noise and Vibration. 2014, 1–8, 2014. ieee: C. Sprock and W. Sextro, “Time-efficient analysis of nonlinear peak bending behavior.,” in Proceedings of ISMA - International Conference of Noise and Vibration. 2014, 2014, pp. 1–8. mla: Sprock, Christian, and Walter Sextro. “Time-Efficient Analysis of Nonlinear Peak Bending Behavior.” Proceedings of ISMA - International Conference of Noise and Vibration. 2014, 2014, pp. 1–8. short: 'C. Sprock, W. Sextro, in: Proceedings of ISMA - International Conference of Noise and Vibration. 2014, 2014, pp. 1–8.' date_created: 2019-05-20T13:26:57Z date_updated: 2019-05-20T13:28:24Z department: - _id: '151' language: - iso: eng page: 1-8 publication: Proceedings of ISMA - International Conference of Noise and Vibration. 2014 status: public title: Time-efficient analysis of nonlinear peak bending behavior. type: conference user_id: '55222' year: '2014' ... --- _id: '9892' author: - first_name: Christian full_name: Sprock, Christian last_name: Sprock - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: 'Sprock C, Sextro W. Vibration Analysis of Mechanical Structures using Multisine Excitation Techniques. In: Proceedings of 31st Danubia-Adria Symposium. 2014. ; 2014.' apa: Sprock, C., & Sextro, W. (2014). Vibration Analysis of Mechanical Structures using Multisine Excitation Techniques. In Proceedings of 31st Danubia-Adria Symposium. 2014. bibtex: '@inproceedings{Sprock_Sextro_2014, title={Vibration Analysis of Mechanical Structures using Multisine Excitation Techniques}, booktitle={Proceedings of 31st Danubia-Adria Symposium. 2014}, author={Sprock, Christian and Sextro, Walter}, year={2014} }' chicago: Sprock, Christian, and Walter Sextro. “Vibration Analysis of Mechanical Structures Using Multisine Excitation Techniques.” In Proceedings of 31st Danubia-Adria Symposium. 2014, 2014. ieee: C. Sprock and W. Sextro, “Vibration Analysis of Mechanical Structures using Multisine Excitation Techniques,” in Proceedings of 31st Danubia-Adria Symposium. 2014, 2014. mla: Sprock, Christian, and Walter Sextro. “Vibration Analysis of Mechanical Structures Using Multisine Excitation Techniques.” Proceedings of 31st Danubia-Adria Symposium. 2014, 2014. short: 'C. Sprock, W. Sextro, in: Proceedings of 31st Danubia-Adria Symposium. 2014, 2014.' date_created: 2019-05-20T13:26:59Z date_updated: 2019-09-16T10:56:34Z department: - _id: '151' language: - iso: eng publication: Proceedings of 31st Danubia-Adria Symposium. 2014 quality_controlled: '1' status: public title: Vibration Analysis of Mechanical Structures using Multisine Excitation Techniques type: conference user_id: '55222' year: '2014' ... --- _id: '9893' author: - first_name: Ansgar full_name: Trächtler, Ansgar last_name: Trächtler - first_name: Christian full_name: Hölscher, Christian last_name: Hölscher - first_name: Christoph full_name: Rasche, Christoph last_name: Rasche - first_name: Claudia full_name: Priesterjahn, Claudia last_name: Priesterjahn - first_name: Detmar full_name: Zimmer, Detmar last_name: Zimmer - first_name: Jan full_name: Henning Keßler, Jan last_name: Henning Keßler - first_name: Katharin full_name: Stahl, Katharin last_name: Stahl - first_name: Kathrin full_name: Flaßkamp, Kathrin last_name: Flaßkamp - first_name: Mareen full_name: Vaßholz, Mareen last_name: Vaßholz - first_name: Martin full_name: Krüger, Martin last_name: Krüger - first_name: Michael full_name: Dellnitz, Michael last_name: Dellnitz - first_name: Peter full_name: Iwanek, Peter last_name: Iwanek - first_name: Peter full_name: Reinold, Peter last_name: Reinold - first_name: Philip full_name: Hartmann, Philip last_name: Hartmann - first_name: Tobias full_name: Meyer, Tobias last_name: Meyer - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: 'Trächtler A, Hölscher C, Rasche C, et al. Introduction to Self-optimization and Dependability. In: Gausemeier J, Josef Rammig F, Schäfer W, Sextro W, eds. Dependability of Self-Optimizing Mechatronic Systems. Lecture Notes in Mechanical Engineering. Springer Berlin Heidelberg; 2014:1-24. doi:10.1007/978-3-642-53742-4_1' apa: Trächtler, A., Hölscher, C., Rasche, C., Priesterjahn, C., Zimmer, D., Henning Keßler, J., … Sextro, W. (2014). Introduction to Self-optimization and Dependability. In J. Gausemeier, F. Josef Rammig, W. Schäfer, & W. Sextro (Eds.), Dependability of Self-Optimizing Mechatronic Systems (pp. 1–24). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-53742-4_1 bibtex: '@inbook{Trächtler_Hölscher_Rasche_Priesterjahn_Zimmer_Henning Keßler_Stahl_Flaßkamp_Vaßholz_Krüger_et al._2014, series={Lecture Notes in Mechanical Engineering}, title={Introduction to Self-optimization and Dependability}, DOI={10.1007/978-3-642-53742-4_1}, booktitle={Dependability of Self-Optimizing Mechatronic Systems}, publisher={Springer Berlin Heidelberg}, author={Trächtler, Ansgar and Hölscher, Christian and Rasche, Christoph and Priesterjahn, Claudia and Zimmer, Detmar and Henning Keßler, Jan and Stahl, Katharin and Flaßkamp, Kathrin and Vaßholz, Mareen and Krüger, Martin and et al.}, editor={Gausemeier, Jürgen and Josef Rammig, Franz and Schäfer, Wilhelm and Sextro, WalterEditors}, year={2014}, pages={1–24}, collection={Lecture Notes in Mechanical Engineering} }' chicago: Trächtler, Ansgar, Christian Hölscher, Christoph Rasche, Claudia Priesterjahn, Detmar Zimmer, Jan Henning Keßler, Katharin Stahl, et al. “Introduction to Self-Optimization and Dependability.” In Dependability of Self-Optimizing Mechatronic Systems, edited by Jürgen Gausemeier, Franz Josef Rammig, Wilhelm Schäfer, and Walter Sextro, 1–24. Lecture Notes in Mechanical Engineering. Springer Berlin Heidelberg, 2014. https://doi.org/10.1007/978-3-642-53742-4_1. ieee: A. Trächtler et al., “Introduction to Self-optimization and Dependability,” in Dependability of Self-Optimizing Mechatronic Systems, J. Gausemeier, F. Josef Rammig, W. Schäfer, and W. Sextro, Eds. Springer Berlin Heidelberg, 2014, pp. 1–24. mla: Trächtler, Ansgar, et al. “Introduction to Self-Optimization and Dependability.” Dependability of Self-Optimizing Mechatronic Systems, edited by Jürgen Gausemeier et al., Springer Berlin Heidelberg, 2014, pp. 1–24, doi:10.1007/978-3-642-53742-4_1. short: 'A. Trächtler, C. Hölscher, C. Rasche, C. Priesterjahn, D. Zimmer, J. Henning Keßler, K. Stahl, K. Flaßkamp, M. Vaßholz, M. Krüger, M. Dellnitz, P. Iwanek, P. Reinold, P. Hartmann, T. Meyer, W. Sextro, in: J. Gausemeier, F. Josef Rammig, W. Schäfer, W. Sextro (Eds.), Dependability of Self-Optimizing Mechatronic Systems, Springer Berlin Heidelberg, 2014, pp. 1–24.' date_created: 2019-05-20T13:29:24Z date_updated: 2019-05-20T13:32:38Z department: - _id: '151' doi: 10.1007/978-3-642-53742-4_1 editor: - first_name: Jürgen full_name: Gausemeier, Jürgen last_name: Gausemeier - first_name: Franz full_name: Josef Rammig, Franz last_name: Josef Rammig - first_name: Wilhelm full_name: Schäfer, Wilhelm last_name: Schäfer - first_name: Walter full_name: Sextro, Walter last_name: Sextro language: - iso: eng page: 1-24 publication: Dependability of Self-Optimizing Mechatronic Systems publication_identifier: isbn: - 978-3-642-53741-7 publisher: Springer Berlin Heidelberg series_title: Lecture Notes in Mechanical Engineering status: public title: Introduction to Self-optimization and Dependability type: book_chapter user_id: '55222' year: '2014' ... --- _id: '9894' author: - first_name: Ansgar full_name: Trächtler, Ansgar last_name: Trächtler - first_name: Bernd full_name: Kleinjohann, Bernd last_name: Kleinjohann - first_name: Christian full_name: Heinzemann, Christian last_name: Heinzemann - first_name: Christoph full_name: Rasche, Christoph last_name: Rasche - first_name: Claudia full_name: Priesterjahn, Claudia last_name: Priesterjahn - first_name: Dominik full_name: Steenken, Dominik last_name: Steenken - first_name: Heike full_name: Wehrheim, Heike last_name: Wehrheim - first_name: Jürgen full_name: Gausemeier, Jürgen last_name: Gausemeier - first_name: Kathrin full_name: Flaßkamp, Kathrin last_name: Flaßkamp - first_name: Lisa full_name: Kleinjohann, Lisa last_name: Kleinjohann - first_name: Martin full_name: Krüger, Martin last_name: Krüger - first_name: Peter full_name: Iwanek, Peter last_name: Iwanek - first_name: Philip full_name: Hartmann, Philip last_name: Hartmann - first_name: Rafal full_name: Dorociak, Rafal last_name: Dorociak - first_name: Stefan full_name: Groesbrink, Stefan last_name: Groesbrink - first_name: Steffen full_name: Ziegert, Steffen last_name: Ziegert - first_name: Tobias full_name: Meyer, Tobias last_name: Meyer - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro - first_name: Wilhelm full_name: Schäfer, Wilhelm last_name: Schäfer citation: ama: 'Trächtler A, Kleinjohann B, Heinzemann C, et al. Case Study. In: Gausemeier J, Josef Rammig F, Schäfer W, Sextro W, eds. Dependability of Self-Optimizing Mechatronic Systems. Lecture Notes in Mechanical Engineering. Springer Berlin Heidelberg; 2014:173-188. doi:10.1007/978-3-642-53742-4_4' apa: Trächtler, A., Kleinjohann, B., Heinzemann, C., Rasche, C., Priesterjahn, C., Steenken, D., … Schäfer, W. (2014). Case Study. In J. Gausemeier, F. Josef Rammig, W. Schäfer, & W. Sextro (Eds.), Dependability of Self-Optimizing Mechatronic Systems (pp. 173–188). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-53742-4_4 bibtex: '@inbook{Trächtler_Kleinjohann_Heinzemann_Rasche_Priesterjahn_Steenken_Wehrheim_Gausemeier_Flaßkamp_Kleinjohann_et al._2014, series={Lecture Notes in Mechanical Engineering}, title={Case Study}, DOI={10.1007/978-3-642-53742-4_4}, booktitle={Dependability of Self-Optimizing Mechatronic Systems}, publisher={Springer Berlin Heidelberg}, author={Trächtler, Ansgar and Kleinjohann, Bernd and Heinzemann, Christian and Rasche, Christoph and Priesterjahn, Claudia and Steenken, Dominik and Wehrheim, Heike and Gausemeier, Jürgen and Flaßkamp, Kathrin and Kleinjohann, Lisa and et al.}, editor={Gausemeier, Jürgen and Josef Rammig, Franz and Schäfer, Wilhelm and Sextro, WalterEditors}, year={2014}, pages={173–188}, collection={Lecture Notes in Mechanical Engineering} }' chicago: Trächtler, Ansgar, Bernd Kleinjohann, Christian Heinzemann, Christoph Rasche, Claudia Priesterjahn, Dominik Steenken, Heike Wehrheim, et al. “Case Study.” In Dependability of Self-Optimizing Mechatronic Systems, edited by Jürgen Gausemeier, Franz Josef Rammig, Wilhelm Schäfer, and Walter Sextro, 173–88. Lecture Notes in Mechanical Engineering. Springer Berlin Heidelberg, 2014. https://doi.org/10.1007/978-3-642-53742-4_4. ieee: A. Trächtler et al., “Case Study,” in Dependability of Self-Optimizing Mechatronic Systems, J. Gausemeier, F. Josef Rammig, W. Schäfer, and W. Sextro, Eds. Springer Berlin Heidelberg, 2014, pp. 173–188. mla: Trächtler, Ansgar, et al. “Case Study.” Dependability of Self-Optimizing Mechatronic Systems, edited by Jürgen Gausemeier et al., Springer Berlin Heidelberg, 2014, pp. 173–88, doi:10.1007/978-3-642-53742-4_4. short: 'A. Trächtler, B. Kleinjohann, C. Heinzemann, C. Rasche, C. Priesterjahn, D. Steenken, H. Wehrheim, J. Gausemeier, K. Flaßkamp, L. Kleinjohann, M. Krüger, P. Iwanek, P. Hartmann, R. Dorociak, S. Groesbrink, S. Ziegert, T. Meyer, W. Sextro, W. Schäfer, in: J. Gausemeier, F. Josef Rammig, W. Schäfer, W. Sextro (Eds.), Dependability of Self-Optimizing Mechatronic Systems, Springer Berlin Heidelberg, 2014, pp. 173–188.' date_created: 2019-05-20T13:29:25Z date_updated: 2019-05-20T13:34:38Z department: - _id: '151' doi: 10.1007/978-3-642-53742-4_4 editor: - first_name: Jürgen full_name: Gausemeier, Jürgen last_name: Gausemeier - first_name: Franz full_name: Josef Rammig, Franz last_name: Josef Rammig - first_name: Wilhelm full_name: Schäfer, Wilhelm last_name: Schäfer - first_name: Walter full_name: Sextro, Walter last_name: Sextro language: - iso: eng page: 173-188 publication: Dependability of Self-Optimizing Mechatronic Systems publication_identifier: isbn: - 978-3-642-53741-7 publisher: Springer Berlin Heidelberg series_title: Lecture Notes in Mechanical Engineering status: public title: Case Study type: book_chapter user_id: '55222' year: '2014' ... --- _id: '9895' abstract: - lang: eng text: Power semiconductor modules are used to control and switch high electrical currents and voltages. Within the power module package wire bonding is used as an interconnection technology. In recent years, aluminum wire has been used preferably, but an ever-growing market of powerful and efficient power modules requires a material with better mechanical and electrical properties. For this reason, a technology change from aluminum to copper is indispensable. However, the copper wire bonding process reacts more sensitive to parameter changes. This makes manufacturing reliable copper bond connections a challenging task. The aim of the BMBF funded project Itsowl-InCuB is the development of self-optimizing techniques to enable the reliable production of copper bond connections under varying conditions. A model of the process is essential to achieve this aim. This model needs to include the dynamic elasto-plastic deformation, the ultrasonic softening effect and the proceeding adhesion between wire and substrate. This paper focusses on the pre-deformation process. In the touchdown phase, the wire is pressed into the V-groove of the tool and a small initial contact area between wire and substrate arise. The local characteristics of the material change abruptly because of the cold forming. Consequently, the pre-deformation has a strong effect on the joining process. In [1], a pre-cleaning effect during the touchdown process of aluminum wires by cracking of oxide layers was presented. These interactions of the process parameters are still largely unknown for copper. In a first step, this paper validates the importance of modeling the pre-deformation by showing its impact on the wire deformation characteristic experimentally. Creating cross-section views of pre-deformed copper wires has shown a low deformation degree compared to aluminum. By using a digital microscope and a scanning confocal microscope an analysis about the contact areas and penetration depths after touchdown has been made. Additionally, it has to be taken into account that the dynamical touchdown force depends on the touchdown speed and the touchdown force set in the bonding machine. In order to measure the overshoot in the force signals, a strain gauge sensor has been used. Subsequently, the affecting factors have been interpreted independently Furthermore, the material properties of copper wire have been investigated with tensile tests and hardness measurements. In a second step, the paper presents finite element models of the touchdown process for source and destination bonds. These models take the measured overshoot in the touchdown forces into account. A multi-linear, isotropic material model has been selected to map the material properties of the copper. A validation of the model with the experimental determined contact areas, normal pressures and penetration depths reveals the high model quality. Thus, the simulation is able to calculate and visualize the three dimensional pre-deformation with an integrated material parameter of the wire if the touchdown parameters of the bonding machine are known. Based on the calculated deformation degrees of wire and substrate, it is probably possible to investigate the effect of the pre-deformation on the pre-cleaning phase in the copper wire bonding. author: - first_name: Andreas full_name: Unger, Andreas last_name: Unger - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro - first_name: Simon full_name: Althoff, Simon last_name: Althoff - first_name: Paul full_name: Eichwald, Paul last_name: Eichwald - first_name: Tobias full_name: Meyer, Tobias last_name: Meyer - first_name: Florian full_name: Eacock, Florian last_name: Eacock - first_name: Michael full_name: Brökelmann, Michael last_name: Brökelmann citation: ama: 'Unger A, Sextro W, Althoff S, et al. Experimental and Numerical Simulation Study of Pre-Deformed Heavy Copper Wire Wedge Bonds. In: Proceedings of the 47th International Symposium on Microelectronics (IMAPS). San Diego, CA, US; 2014:289-294.' apa: Unger, A., Sextro, W., Althoff, S., Eichwald, P., Meyer, T., Eacock, F., & Brökelmann, M. (2014). Experimental and Numerical Simulation Study of Pre-Deformed Heavy Copper Wire Wedge Bonds. In Proceedings of the 47th International Symposium on Microelectronics (IMAPS) (pp. 289–294). San Diego, CA, US. bibtex: '@inproceedings{Unger_Sextro_Althoff_Eichwald_Meyer_Eacock_Brökelmann_2014, place={San Diego, CA, US}, title={Experimental and Numerical Simulation Study of Pre-Deformed Heavy Copper Wire Wedge Bonds}, booktitle={Proceedings of the 47th International Symposium on Microelectronics (IMAPS)}, author={Unger, Andreas and Sextro, Walter and Althoff, Simon and Eichwald, Paul and Meyer, Tobias and Eacock, Florian and Brökelmann, Michael}, year={2014}, pages={289–294} }' chicago: Unger, Andreas, Walter Sextro, Simon Althoff, Paul Eichwald, Tobias Meyer, Florian Eacock, and Michael Brökelmann. “Experimental and Numerical Simulation Study of Pre-Deformed Heavy Copper Wire Wedge Bonds.” In Proceedings of the 47th International Symposium on Microelectronics (IMAPS), 289–94. San Diego, CA, US, 2014. ieee: A. Unger et al., “Experimental and Numerical Simulation Study of Pre-Deformed Heavy Copper Wire Wedge Bonds,” in Proceedings of the 47th International Symposium on Microelectronics (IMAPS), 2014, pp. 289–294. mla: Unger, Andreas, et al. “Experimental and Numerical Simulation Study of Pre-Deformed Heavy Copper Wire Wedge Bonds.” Proceedings of the 47th International Symposium on Microelectronics (IMAPS), 2014, pp. 289–94. short: 'A. Unger, W. Sextro, S. Althoff, P. Eichwald, T. Meyer, F. Eacock, M. Brökelmann, in: Proceedings of the 47th International Symposium on Microelectronics (IMAPS), San Diego, CA, US, 2014, pp. 289–294.' date_created: 2019-05-20T13:35:09Z date_updated: 2020-05-07T05:33:47Z department: - _id: '151' keyword: - pre-deformation - copper wire bonding - finite element model language: - iso: eng page: 289-294 place: San Diego, CA, US project: - _id: '92' grant_number: 02 PQ2210 name: Intelligente Herstellung zuverlässiger Kupferbondverbindungen publication: Proceedings of the 47th International Symposium on Microelectronics (IMAPS) status: public title: Experimental and Numerical Simulation Study of Pre-Deformed Heavy Copper Wire Wedge Bonds type: conference user_id: '210' year: '2014' ... --- _id: '9896' abstract: - lang: eng text: In power electronics, ultrasonic wire bonding is used to connect the electrical terminals of power modules. To implement a self-optimization technique for ultrasonic wire bonding machines, a model of the process is essential. This model needs to include the so called ultrasonic softening effect. It is a key effect within the wire bonding process primarily enabling the robust interconnection between the wire and a substrate. However, the physical modeling of the ultrasonic softening effect is notoriously difficult because of its highly non-linear character and the absence of a proper measurement method. In a first step, this paper validates the importance of modeling the ultrasonic softening by showing its impact on the wire deformation characteristic experimentally. In a second step, the paper presents a data-driven model of the ultrasonic softening effect which is constructed from data using machine learning techniques. A typical caveat of data-driven modeling is the need for training data that cover the considered domain of process parameters in order to achieve accurate generalization of the trained model to new process configurations. In practice, however, the space of process parameters can only be sampled sparsely. In this paper, a novel technique is applied which enables the integration of prior knowledge about the process into the datadriven modeling process. It turns out that this approach results in accurate generalization of the data-driven model to unseen process parameters from sparse data. author: - first_name: Andreas full_name: Unger, Andreas last_name: Unger - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro - first_name: Simon full_name: Althoff, Simon last_name: Althoff - first_name: Tobias full_name: Meyer, Tobias last_name: Meyer - first_name: Michael full_name: Brökelmann, Michael last_name: Brökelmann - first_name: Klaus full_name: Neumann, Klaus last_name: Neumann - first_name: René Felix full_name: Reimann, René Felix last_name: Reimann - first_name: Karsten full_name: Guth, Karsten last_name: Guth - first_name: Daniel full_name: Bolowski, Daniel last_name: Bolowski citation: ama: 'Unger A, Sextro W, Althoff S, et al. Data-driven Modeling of the Ultrasonic Softening Effect for Robust Copper Wire Bonding. In: Proceedings of 8th International Conference on Integrated Power Electronic Systems. Vol 141. ; 2014:175-180.' apa: Unger, A., Sextro, W., Althoff, S., Meyer, T., Brökelmann, M., Neumann, K., … Bolowski, D. (2014). Data-driven Modeling of the Ultrasonic Softening Effect for Robust Copper Wire Bonding. In Proceedings of 8th International Conference on Integrated Power Electronic Systems (Vol. 141, pp. 175–180). bibtex: '@inproceedings{Unger_Sextro_Althoff_Meyer_Brökelmann_Neumann_Reimann_Guth_Bolowski_2014, title={Data-driven Modeling of the Ultrasonic Softening Effect for Robust Copper Wire Bonding}, volume={141}, booktitle={Proceedings of 8th International Conference on Integrated Power Electronic Systems}, author={Unger, Andreas and Sextro, Walter and Althoff, Simon and Meyer, Tobias and Brökelmann, Michael and Neumann, Klaus and Reimann, René Felix and Guth, Karsten and Bolowski, Daniel}, year={2014}, pages={175–180} }' chicago: Unger, Andreas, Walter Sextro, Simon Althoff, Tobias Meyer, Michael Brökelmann, Klaus Neumann, René Felix Reimann, Karsten Guth, and Daniel Bolowski. “Data-Driven Modeling of the Ultrasonic Softening Effect for Robust Copper Wire Bonding.” In Proceedings of 8th International Conference on Integrated Power Electronic Systems, 141:175–80, 2014. ieee: A. Unger et al., “Data-driven Modeling of the Ultrasonic Softening Effect for Robust Copper Wire Bonding,” in Proceedings of 8th International Conference on Integrated Power Electronic Systems, 2014, vol. 141, pp. 175–180. mla: Unger, Andreas, et al. “Data-Driven Modeling of the Ultrasonic Softening Effect for Robust Copper Wire Bonding.” Proceedings of 8th International Conference on Integrated Power Electronic Systems, vol. 141, 2014, pp. 175–80. short: 'A. Unger, W. Sextro, S. Althoff, T. Meyer, M. Brökelmann, K. Neumann, R.F. Reimann, K. Guth, D. Bolowski, in: Proceedings of 8th International Conference on Integrated Power Electronic Systems, 2014, pp. 175–180.' date_created: 2019-05-20T13:38:10Z date_updated: 2020-05-07T05:33:47Z department: - _id: '151' intvolume: ' 141' language: - iso: eng page: 175-180 project: - _id: '92' grant_number: 02 PQ2210 name: Intelligente Herstellung zuverlässiger Kupferbondverbindungen publication: Proceedings of 8th International Conference on Integrated Power Electronic Systems status: public title: Data-driven Modeling of the Ultrasonic Softening Effect for Robust Copper Wire Bonding type: conference user_id: '210' volume: 141 year: '2014' ... --- _id: '392' author: - first_name: NinaMadeleine full_name: Brummel, NinaMadeleine last_name: Brummel citation: ama: 'Brummel N. On the Relation between Innovation and Competion: The Case of Energy Industry. Universität Paderborn; 2014.' apa: 'Brummel, N. (2014). On the Relation between Innovation and Competion: The Case of Energy Industry. Universität Paderborn.' bibtex: '@book{Brummel_2014, title={On the Relation between Innovation and Competion: The Case of Energy Industry}, publisher={Universität Paderborn}, author={Brummel, NinaMadeleine}, year={2014} }' chicago: 'Brummel, NinaMadeleine. On the Relation between Innovation and Competion: The Case of Energy Industry. Universität Paderborn, 2014.' ieee: 'N. Brummel, On the Relation between Innovation and Competion: The Case of Energy Industry. Universität Paderborn, 2014.' mla: 'Brummel, NinaMadeleine. On the Relation between Innovation and Competion: The Case of Energy Industry. Universität Paderborn, 2014.' short: 'N. Brummel, On the Relation between Innovation and Competion: The Case of Energy Industry, Universität Paderborn, 2014.' date_created: 2017-10-17T12:42:08Z date_updated: 2022-01-06T06:59:54Z department: - _id: '280' project: - _id: '1' name: SFB 901 - _id: '7' name: SFB 901 - Subprojekt A3 - _id: '2' name: SFB 901 - Project Area A publisher: Universität Paderborn status: public supervisor: - first_name: Burkhard full_name: Hehenkamp, Burkhard id: '37339' last_name: Hehenkamp title: 'On the Relation between Innovation and Competion: The Case of Energy Industry' type: mastersthesis user_id: '42447' year: '2014' ... --- _id: '393' abstract: - lang: eng text: 'A fundamental problem for peer-to-peer systems is to maintain connectivity while nodes are leaving, i.e., the nodes requesting to leave the peer-to-peer system are excluded from the overlay network without affecting its connectivity. There are a number of studies for safe node exclusion if the overlay is in a well-defined state initially. Surprisingly, the problem is not formally studied yet for the case in which the overlay network is in an arbitrary initial state, i.e., when looking for a self-stabilizing solution for excluding leaving nodes. We study this problem in two variants: the Finite Departure Problem (FDP) ) and the Finite Sleep Problem (FSP). In the FDP the leaving nodes have to irrevocably decide when it is safe to leave the network, whereas in the FSP, this leaving decision does not have to be final: the nodes may resume computation if necessary. We show that there is no self-stabilizing distributed algorithm for the FDP, even in a synchronous message passing model. To allow a solution, we introduce an oracle called NIDEC and show that it is sufficient even for the asynchronous message passing model by proposing an algorithm that can solve the FDP using NIDEC. We also show that a solution to the FSP does not require an oracle.' author: - first_name: Dianne full_name: Foreback, Dianne last_name: Foreback - first_name: Andreas full_name: Koutsopoulos, Andreas last_name: Koutsopoulos - first_name: Mikhail full_name: Nesterenko, Mikhail last_name: Nesterenko - first_name: Christian full_name: Scheideler, Christian id: '20792' last_name: Scheideler - first_name: Thim Frederik full_name: Strothmann, Thim Frederik id: '11319' last_name: Strothmann citation: ama: 'Foreback D, Koutsopoulos A, Nesterenko M, Scheideler C, Strothmann TF. On Stabilizing Departures in Overlay Networks. In: Proceedings of the 16th International Symposium on Stabilization, Safety, and Security of Distributed Systems. LNCS. ; 2014:48--62. doi:10.1007/978-3-319-11764-5_4' apa: Foreback, D., Koutsopoulos, A., Nesterenko, M., Scheideler, C., & Strothmann, T. F. (2014). On Stabilizing Departures in Overlay Networks. In Proceedings of the 16th International Symposium on Stabilization, Safety, and Security of Distributed Systems (pp. 48--62). https://doi.org/10.1007/978-3-319-11764-5_4 bibtex: '@inproceedings{Foreback_Koutsopoulos_Nesterenko_Scheideler_Strothmann_2014, series={LNCS}, title={On Stabilizing Departures in Overlay Networks}, DOI={10.1007/978-3-319-11764-5_4}, booktitle={Proceedings of the 16th International Symposium on Stabilization, Safety, and Security of Distributed Systems}, author={Foreback, Dianne and Koutsopoulos, Andreas and Nesterenko, Mikhail and Scheideler, Christian and Strothmann, Thim Frederik}, year={2014}, pages={48--62}, collection={LNCS} }' chicago: Foreback, Dianne, Andreas Koutsopoulos, Mikhail Nesterenko, Christian Scheideler, and Thim Frederik Strothmann. “On Stabilizing Departures in Overlay Networks.” In Proceedings of the 16th International Symposium on Stabilization, Safety, and Security of Distributed Systems, 48--62. LNCS, 2014. https://doi.org/10.1007/978-3-319-11764-5_4. ieee: D. Foreback, A. Koutsopoulos, M. Nesterenko, C. Scheideler, and T. F. Strothmann, “On Stabilizing Departures in Overlay Networks,” in Proceedings of the 16th International Symposium on Stabilization, Safety, and Security of Distributed Systems, 2014, pp. 48--62. mla: Foreback, Dianne, et al. “On Stabilizing Departures in Overlay Networks.” Proceedings of the 16th International Symposium on Stabilization, Safety, and Security of Distributed Systems, 2014, pp. 48--62, doi:10.1007/978-3-319-11764-5_4. short: 'D. Foreback, A. Koutsopoulos, M. Nesterenko, C. Scheideler, T.F. Strothmann, in: Proceedings of the 16th International Symposium on Stabilization, Safety, and Security of Distributed Systems, 2014, pp. 48--62.' date_created: 2017-10-17T12:42:08Z date_updated: 2022-01-06T06:59:56Z ddc: - '040' department: - _id: '79' doi: 10.1007/978-3-319-11764-5_4 file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-20T07:00:28Z date_updated: 2018-03-20T07:00:28Z file_id: '1384' file_name: 393-departures.pdf file_size: 287539 relation: main_file success: 1 file_date_updated: 2018-03-20T07:00:28Z has_accepted_license: '1' language: - iso: eng page: 48--62 project: - _id: '1' name: SFB 901 - _id: '5' name: SFB 901 - Subprojekt A1 - _id: '2' name: SFB 901 - Project Area A publication: Proceedings of the 16th International Symposium on Stabilization, Safety, and Security of Distributed Systems series_title: LNCS status: public title: On Stabilizing Departures in Overlay Networks type: conference user_id: '477' year: '2014' ... --- _id: '3937' abstract: - lang: eng text: "The relevance of our definition for sensitivity in refractometric sensing, being the relative change in the transmittance\r\nof a certain output channel of an optical device over the change in the refractive index of the probed\r\nmaterial, is discussed. It is compared to one based on spectral shift per refractive index unit change. Further, there\r\nis discussion on how group delay and sensitivity are interrelated and can be converted into each other and which\r\nphysical quantities are relevant for high sensitivity. As a by-product of the theory presented, a general expression\r\nrelating group delay and the ratio of the time-averaged optical energy and the input power is presented." article_number: 1561-1567 article_type: original author: - first_name: Hugo J. W. M. full_name: Hoekstra, Hugo J. W. M. last_name: Hoekstra - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 citation: ama: Hoekstra HJWM, Hammer M. General relation for group delay and the relevance of group delay for refractometric sensing. Journal of the Optical Society of America B. 2014;31(7). doi:10.1364/josab.31.001561 apa: Hoekstra, H. J. W. M., & Hammer, M. (2014). General relation for group delay and the relevance of group delay for refractometric sensing. Journal of the Optical Society of America B, 31(7). https://doi.org/10.1364/josab.31.001561 bibtex: '@article{Hoekstra_Hammer_2014, title={General relation for group delay and the relevance of group delay for refractometric sensing}, volume={31}, DOI={10.1364/josab.31.001561}, number={71561–1567}, journal={Journal of the Optical Society of America B}, publisher={The Optical Society}, author={Hoekstra, Hugo J. W. M. and Hammer, Manfred}, year={2014} }' chicago: Hoekstra, Hugo J. W. M., and Manfred Hammer. “General Relation for Group Delay and the Relevance of Group Delay for Refractometric Sensing.” Journal of the Optical Society of America B 31, no. 7 (2014). https://doi.org/10.1364/josab.31.001561. ieee: H. J. W. M. Hoekstra and M. Hammer, “General relation for group delay and the relevance of group delay for refractometric sensing,” Journal of the Optical Society of America B, vol. 31, no. 7, 2014. mla: Hoekstra, Hugo J. W. M., and Manfred Hammer. “General Relation for Group Delay and the Relevance of Group Delay for Refractometric Sensing.” Journal of the Optical Society of America B, vol. 31, no. 7, 1561–1567, The Optical Society, 2014, doi:10.1364/josab.31.001561. short: H.J.W.M. Hoekstra, M. Hammer, Journal of the Optical Society of America B 31 (2014). date_created: 2018-08-20T09:59:35Z date_updated: 2022-01-06T06:59:57Z ddc: - '530' department: - _id: '61' doi: 10.1364/josab.31.001561 file: - access_level: closed content_type: application/pdf creator: hclaudia date_created: 2018-08-20T10:00:33Z date_updated: 2018-08-20T10:00:33Z file_id: '3938' file_name: 2014_07_Hoekstra,Hammer_General relation for group delay and the relevance of group delay for refractometric sensing_OSA.pdf file_size: 364221 relation: main_file success: 1 file_date_updated: 2018-08-20T10:00:33Z has_accepted_license: '1' intvolume: ' 31' issue: '7' keyword: - tet_topic_waveguide language: - iso: eng publication: Journal of the Optical Society of America B publication_identifier: issn: - 0740-3224 - 1520-8540 publication_status: published publisher: The Optical Society status: public title: General relation for group delay and the relevance of group delay for refractometric sensing type: journal_article user_id: '55706' volume: 31 year: '2014' ... --- _id: '394' abstract: - lang: eng text: Service Oriented Architectures (SOAs) enable the reuse and substitution of software services to develop highly flexible software systems. To benefit from the growing plethora of available services, sophisticated service discovery approaches are needed that bring service requests and offers together. Such approaches rely on rich service descriptions, which specify also the behavior of provided/requested services, e.g., by pre- and postconditions of operations. As a base for the specification a data schema is used, which specifies the used data types and their relations. However, data schemas are typically heterogeneous wrt. their structure and terminology, since they are created individually in their diverse application contexts. As a consequence the behavioral models that are typed over the heterogeneous data schemas, cannot be compared directly. In this paper, we present an holistic approach to normalize rich service description models to enable behavior-aware service discovery. The approach consists of a matching algorithm that helps to resolve structural and terminological heterogeneity in data schemas by exploiting domain-specific background ontologies. The resulting data schema mappings are represented in terms of Query View Transformation (QVT) relations that even reflect complex n:m correspondences. By executing the transformation, behavioral models are automatically normalized, which is a prerequisite for a behavior-aware operation matching. author: - first_name: Simon full_name: Schwichtenberg, Simon id: '13235' last_name: Schwichtenberg - first_name: Christian full_name: Gerth, Christian last_name: Gerth - first_name: Zille full_name: Huma, Zille last_name: Huma - first_name: Gregor full_name: Engels, Gregor id: '107' last_name: Engels citation: ama: 'Schwichtenberg S, Gerth C, Huma Z, Engels G. Normalizing Heterogeneous Service Description Models with Generated QVT Transformations. In: Proceedings of the 10th European Conference on Modelling Foundations and Applications (ECMFA). LNCS. ; 2014:180-195. doi:10.1007/978-3-319-09195-2_12' apa: Schwichtenberg, S., Gerth, C., Huma, Z., & Engels, G. (2014). Normalizing Heterogeneous Service Description Models with Generated QVT Transformations. In Proceedings of the 10th European Conference on Modelling Foundations and Applications (ECMFA) (pp. 180–195). https://doi.org/10.1007/978-3-319-09195-2_12 bibtex: '@inproceedings{Schwichtenberg_Gerth_Huma_Engels_2014, series={LNCS}, title={Normalizing Heterogeneous Service Description Models with Generated QVT Transformations}, DOI={10.1007/978-3-319-09195-2_12}, booktitle={Proceedings of the 10th European Conference on Modelling Foundations and Applications (ECMFA)}, author={Schwichtenberg, Simon and Gerth, Christian and Huma, Zille and Engels, Gregor}, year={2014}, pages={180–195}, collection={LNCS} }' chicago: Schwichtenberg, Simon, Christian Gerth, Zille Huma, and Gregor Engels. “Normalizing Heterogeneous Service Description Models with Generated QVT Transformations.” In Proceedings of the 10th European Conference on Modelling Foundations and Applications (ECMFA), 180–95. LNCS, 2014. https://doi.org/10.1007/978-3-319-09195-2_12. ieee: S. Schwichtenberg, C. Gerth, Z. Huma, and G. Engels, “Normalizing Heterogeneous Service Description Models with Generated QVT Transformations,” in Proceedings of the 10th European Conference on Modelling Foundations and Applications (ECMFA), 2014, pp. 180–195. mla: Schwichtenberg, Simon, et al. “Normalizing Heterogeneous Service Description Models with Generated QVT Transformations.” Proceedings of the 10th European Conference on Modelling Foundations and Applications (ECMFA), 2014, pp. 180–95, doi:10.1007/978-3-319-09195-2_12. short: 'S. Schwichtenberg, C. Gerth, Z. Huma, G. Engels, in: Proceedings of the 10th European Conference on Modelling Foundations and Applications (ECMFA), 2014, pp. 180–195.' date_created: 2017-10-17T12:42:08Z date_updated: 2022-01-06T06:59:58Z ddc: - '040' department: - _id: '66' doi: 10.1007/978-3-319-09195-2_12 file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-20T06:59:55Z date_updated: 2018-03-20T06:59:55Z file_id: '1383' file_name: 394-SGHE14.pdf file_size: 1107805 relation: main_file success: 1 file_date_updated: 2018-03-20T06:59:55Z has_accepted_license: '1' language: - iso: eng page: 180-195 project: - _id: '1' name: SFB 901 - _id: '9' name: SFB 901 - Subprojekt B1 - _id: '3' name: SFB 901 - Project Area B publication: Proceedings of the 10th European Conference on Modelling Foundations and Applications (ECMFA) series_title: LNCS status: public title: Normalizing Heterogeneous Service Description Models with Generated QVT Transformations type: conference user_id: '477' year: '2014' ... --- _id: '3941' author: - first_name: Stefan full_name: Declair, Stefan last_name: Declair - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Declair S, Förstner J. Simulation of Planar Photonic Resonators. In: Choi AHW, ed. Handbook of Optical Microcavities. Vol Kapitel 2. Pan Stanford Publishing Pte. Ltd.; 2014.' apa: Declair, S., & Förstner, J. (2014). Simulation of Planar Photonic Resonators. In A. H. W. Choi (Ed.), Handbook of Optical Microcavities (Vol. Kapitel 2). Pan Stanford Publishing Pte. Ltd. bibtex: '@inbook{Declair_Förstner_2014, title={Simulation of Planar Photonic Resonators}, volume={Kapitel 2}, booktitle={Handbook of Optical Microcavities}, publisher={Pan Stanford Publishing Pte. Ltd.}, author={Declair, Stefan and Förstner, Jens}, editor={Choi, Anthony H.W.Editor}, year={2014} }' chicago: Declair, Stefan, and Jens Förstner. “Simulation of Planar Photonic Resonators.” In Handbook of Optical Microcavities, edited by Anthony H.W. Choi, Vol. Kapitel 2. Pan Stanford Publishing Pte. Ltd., 2014. ieee: S. Declair and J. Förstner, “Simulation of Planar Photonic Resonators,” in Handbook of Optical Microcavities, vol. Kapitel 2, A. H. W. Choi, Ed. Pan Stanford Publishing Pte. Ltd., 2014. mla: Declair, Stefan, and Jens Förstner. “Simulation of Planar Photonic Resonators.” Handbook of Optical Microcavities, edited by Anthony H.W. Choi, vol. Kapitel 2, Pan Stanford Publishing Pte. Ltd., 2014. short: 'S. Declair, J. Förstner, in: A.H.W. Choi (Ed.), Handbook of Optical Microcavities, Pan Stanford Publishing Pte. Ltd., 2014.' date_created: 2018-08-20T10:33:51Z date_updated: 2022-01-06T06:59:58Z ddc: - '530' department: - _id: '15' editor: - first_name: Anthony H.W. full_name: Choi, Anthony H.W. last_name: Choi file: - access_level: closed content_type: application/pdf creator: hclaudia date_created: 2018-08-20T10:27:50Z date_updated: 2018-08-20T10:27:50Z file_id: '3942' file_name: 2013-04 Declair,Förstner_Simulation of Planar Photonic Resonators_Handbook-of-Optical-Microcavities.pdf file_size: 4806196 relation: main_file success: 1 file_date_updated: 2018-08-20T10:27:50Z has_accepted_license: '1' keyword: - tet_topic_phc language: - iso: eng publication: Handbook of Optical Microcavities publication_identifier: eisbn: - 978-981-4463-25-6 publication_status: published publisher: Pan Stanford Publishing Pte. Ltd. status: public title: Simulation of Planar Photonic Resonators type: book_chapter user_id: '55706' volume: Kapitel 2 year: '2014' ... --- _id: '395' abstract: - lang: eng text: We consider a multilevel network game, where nodes can improvetheir communication costs by connecting to a high-speed network.The n nodes are connected by a static network and each node can decideindividually to become a gateway to the high-speed network. The goalof a node v is to minimize its private costs, i.e., the sum (SUM-game) ormaximum (MAX-game) of communication distances from v to all othernodes plus a fixed price α > 0 if it decides to be a gateway. Between gatewaysthe communication distance is 0, and gateways also improve othernodes’ distances by behaving as shortcuts. For the SUM-game, we showthat for α ≤ n − 1, the price of anarchy is Θ (n/√α) and in this rangeequilibria always exist. In range α ∈ (n−1, n(n−1)) the price of anarchyis Θ(√α), and for α ≥ n(n − 1) it is constant. For the MAX-game, weshow that the price of anarchy is either Θ (1 + n/√α), for α ≥ 1, orelse 1. Given a graph with girth of at least 4α, equilibria always exist.Concerning the dynamics, both games are not potential games. For theSUM-game, we even show that it is not weakly acyclic. author: - first_name: Sebastian full_name: Abshoff, Sebastian last_name: Abshoff - first_name: Andreas full_name: Cord-Landwehr, Andreas last_name: Cord-Landwehr - first_name: Daniel full_name: Jung, Daniel id: '37827' last_name: Jung - first_name: Alexander full_name: Skopalik, Alexander id: '40384' last_name: Skopalik citation: ama: 'Abshoff S, Cord-Landwehr A, Jung D, Skopalik A. Multilevel Network Games. In: Proceedings of the 10th International Conference on Web and Internet Economics (WINE). LNCS. ; 2014:435-440. doi:10.1007/978-3-319-13129-0_36' apa: Abshoff, S., Cord-Landwehr, A., Jung, D., & Skopalik, A. (2014). Multilevel Network Games. In Proceedings of the 10th International Conference on Web and Internet Economics (WINE) (pp. 435–440). https://doi.org/10.1007/978-3-319-13129-0_36 bibtex: '@inproceedings{Abshoff_Cord-Landwehr_Jung_Skopalik_2014, series={LNCS}, title={Multilevel Network Games}, DOI={10.1007/978-3-319-13129-0_36}, booktitle={Proceedings of the 10th International Conference on Web and Internet Economics (WINE)}, author={Abshoff, Sebastian and Cord-Landwehr, Andreas and Jung, Daniel and Skopalik, Alexander}, year={2014}, pages={435–440}, collection={LNCS} }' chicago: Abshoff, Sebastian, Andreas Cord-Landwehr, Daniel Jung, and Alexander Skopalik. “Multilevel Network Games.” In Proceedings of the 10th International Conference on Web and Internet Economics (WINE), 435–40. LNCS, 2014. https://doi.org/10.1007/978-3-319-13129-0_36. ieee: S. Abshoff, A. Cord-Landwehr, D. Jung, and A. Skopalik, “Multilevel Network Games,” in Proceedings of the 10th International Conference on Web and Internet Economics (WINE), 2014, pp. 435–440. mla: Abshoff, Sebastian, et al. “Multilevel Network Games.” Proceedings of the 10th International Conference on Web and Internet Economics (WINE), 2014, pp. 435–40, doi:10.1007/978-3-319-13129-0_36. short: 'S. Abshoff, A. Cord-Landwehr, D. Jung, A. Skopalik, in: Proceedings of the 10th International Conference on Web and Internet Economics (WINE), 2014, pp. 435–440.' date_created: 2017-10-17T12:42:09Z date_updated: 2022-01-06T06:59:59Z ddc: - '040' department: - _id: '63' - _id: '541' doi: 10.1007/978-3-319-13129-0_36 file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-20T06:59:20Z date_updated: 2018-03-20T06:59:20Z file_id: '1382' file_name: 395-WINE2014ACJS.pdf file_size: 161479 relation: main_file success: 1 file_date_updated: 2018-03-20T06:59:20Z has_accepted_license: '1' language: - iso: eng page: 435-440 project: - _id: '1' name: SFB 901 - _id: '7' name: SFB 901 - Subprojekt A3 - _id: '5' name: SFB 901 - Subprojekt A1 - _id: '2' name: SFB 901 - Project Area A publication: Proceedings of the 10th International Conference on Web and Internet Economics (WINE) series_title: LNCS status: public title: Multilevel Network Games type: conference user_id: '15415' year: '2014' ... --- _id: '396' author: - first_name: Dorina full_name: Bano, Dorina last_name: Bano citation: ama: Bano D. Modeling and Matching of Reputation of Services in On-The-Fly Computing. Universität Paderborn; 2014. apa: Bano, D. (2014). Modeling and Matching of Reputation of Services in On-The-Fly Computing. Universität Paderborn. bibtex: '@book{Bano_2014, title={Modeling and Matching of Reputation of Services in On-The-Fly Computing}, publisher={Universität Paderborn}, author={Bano, Dorina}, year={2014} }' chicago: Bano, Dorina. Modeling and Matching of Reputation of Services in On-The-Fly Computing. Universität Paderborn, 2014. ieee: D. Bano, Modeling and Matching of Reputation of Services in On-The-Fly Computing. Universität Paderborn, 2014. mla: Bano, Dorina. Modeling and Matching of Reputation of Services in On-The-Fly Computing. Universität Paderborn, 2014. short: D. Bano, Modeling and Matching of Reputation of Services in On-The-Fly Computing, Universität Paderborn, 2014. date_created: 2017-10-17T12:42:09Z date_updated: 2022-01-06T07:00:00Z project: - _id: '1' name: SFB 901 - _id: '9' name: SFB 901 - Subprojekt B1 - _id: '3' name: SFB 901 - Project Area B publisher: Universität Paderborn status: public title: Modeling and Matching of Reputation of Services in On-The-Fly Computing type: mastersthesis user_id: '15504' year: '2014' ... --- _id: '397' abstract: - lang: eng text: We present a factor $14D^2$ approximation algorithm for the minimum linear arrangement problem on series-parallel graphs, where $D$ is the maximum degree in the graph. Given a suitable decomposition of the graph, our algorithm runs in time $O(|E|)$ and is very easy to implement. Its divide-and-conquer approach allows for an effective parallelization. Note that a suitable decomposition can also be computed in time $O(|E|\log{|E|})$ (or even $O(\log{|E|}\log^*{|E|})$ on an EREW PRAM using $O(|E|)$ processors). For the proof of the approximation ratio, we use a sophisticated charging method that uses techniques similar to amortized analysis in advanced data structures. On general graphs, the minimum linear arrangement problem is known to be NP-hard. To the best of our knowledge, the minimum linear arrangement problem on series-parallel graphs has not been studied before. author: - first_name: Christian full_name: Scheideler, Christian id: '20792' last_name: Scheideler - first_name: Martina full_name: Eikel, Martina last_name: Eikel - first_name: Alexander full_name: Setzer, Alexander id: '11108' last_name: Setzer citation: ama: 'Scheideler C, Eikel M, Setzer A. Minimum Linear Arrangement of Series-Parallel Graphs. In: Proceedings of the 12th Workshop on Approximation and Online Algorithms (WAOA). LNCS. ; 2014:168--180.' apa: Scheideler, C., Eikel, M., & Setzer, A. (2014). Minimum Linear Arrangement of Series-Parallel Graphs. In Proceedings of the 12th Workshop on Approximation and Online Algorithms (WAOA) (pp. 168--180). bibtex: '@inproceedings{Scheideler_Eikel_Setzer_2014, series={LNCS}, title={Minimum Linear Arrangement of Series-Parallel Graphs}, booktitle={Proceedings of the 12th Workshop on Approximation and Online Algorithms (WAOA)}, author={Scheideler, Christian and Eikel, Martina and Setzer, Alexander}, year={2014}, pages={168--180}, collection={LNCS} }' chicago: Scheideler, Christian, Martina Eikel, and Alexander Setzer. “Minimum Linear Arrangement of Series-Parallel Graphs.” In Proceedings of the 12th Workshop on Approximation and Online Algorithms (WAOA), 168--180. LNCS, 2014. ieee: C. Scheideler, M. Eikel, and A. Setzer, “Minimum Linear Arrangement of Series-Parallel Graphs,” in Proceedings of the 12th Workshop on Approximation and Online Algorithms (WAOA), 2014, pp. 168--180. mla: Scheideler, Christian, et al. “Minimum Linear Arrangement of Series-Parallel Graphs.” Proceedings of the 12th Workshop on Approximation and Online Algorithms (WAOA), 2014, pp. 168--180. short: 'C. Scheideler, M. Eikel, A. Setzer, in: Proceedings of the 12th Workshop on Approximation and Online Algorithms (WAOA), 2014, pp. 168--180.' date_created: 2017-10-17T12:42:09Z date_updated: 2022-01-06T07:00:02Z ddc: - '040' department: - _id: '79' file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-20T06:58:44Z date_updated: 2018-03-20T06:58:44Z file_id: '1381' file_name: 397-WAOA14_01.pdf file_size: 365818 relation: main_file success: 1 file_date_updated: 2018-03-20T06:58:44Z has_accepted_license: '1' page: 168--180 project: - _id: '1' name: SFB 901 - _id: '5' name: SFB 901 - Subprojekt A1 - _id: '2' name: SFB 901 - Project Area A publication: Proceedings of the 12th Workshop on Approximation and Online Algorithms (WAOA) series_title: LNCS status: public title: Minimum Linear Arrangement of Series-Parallel Graphs type: conference user_id: '15504' year: '2014' ... --- _id: '399' abstract: - lang: eng text: Ensuring memory access security is a challenge for reconfigurable systems with multiple cores. Previous work introduced access monitors attached to the memory subsystem to ensure that the cores adhere to pre-defined protocols when accessing memory. In this paper, we combine access monitors with a formal runtime verification technique known as proof-carrying hardware to guarantee memory security. We extend previous work on proof-carrying hardware by covering sequential circuits and demonstrate our approach with a prototype leveraging ReconOS/Zynq with an embedded ZUMA virtual FPGA overlay. Experiments show the feasibility of the approach and the capabilities of the prototype, which constitutes the first realization of proof-carrying hardware on real FPGAs. The area overheads for the virtual FPGA are measured as 2x-10x, depending on the resource type. The delay overhead is substantial with almost 100x, but this is an extremely pessimistic estimate that will be lowered once accurate timing analysis for FPGA overlays become available. Finally, reconfiguration time for the virtual FPGA is about one order of magnitude lower than for the native Zynq fabric. author: - first_name: Tobias full_name: Wiersema, Tobias id: '3118' last_name: Wiersema - first_name: Stephanie full_name: Drzevitzky, Stephanie last_name: Drzevitzky - first_name: Marco full_name: Platzner, Marco id: '398' last_name: Platzner citation: ama: 'Wiersema T, Drzevitzky S, Platzner M. Memory Security in Reconfigurable Computers: Combining Formal Verification with Monitoring. In: Proceedings of the International Conference on Field-Programmable Technology (FPT). ; 2014:167-174. doi:10.1109/FPT.2014.7082771' apa: 'Wiersema, T., Drzevitzky, S., & Platzner, M. (2014). Memory Security in Reconfigurable Computers: Combining Formal Verification with Monitoring. In Proceedings of the International Conference on Field-Programmable Technology (FPT) (pp. 167–174). https://doi.org/10.1109/FPT.2014.7082771' bibtex: '@inproceedings{Wiersema_Drzevitzky_Platzner_2014, title={Memory Security in Reconfigurable Computers: Combining Formal Verification with Monitoring}, DOI={10.1109/FPT.2014.7082771}, booktitle={Proceedings of the International Conference on Field-Programmable Technology (FPT)}, author={Wiersema, Tobias and Drzevitzky, Stephanie and Platzner, Marco}, year={2014}, pages={167–174} }' chicago: 'Wiersema, Tobias, Stephanie Drzevitzky, and Marco Platzner. “Memory Security in Reconfigurable Computers: Combining Formal Verification with Monitoring.” In Proceedings of the International Conference on Field-Programmable Technology (FPT), 167–74, 2014. https://doi.org/10.1109/FPT.2014.7082771.' ieee: 'T. Wiersema, S. Drzevitzky, and M. Platzner, “Memory Security in Reconfigurable Computers: Combining Formal Verification with Monitoring,” in Proceedings of the International Conference on Field-Programmable Technology (FPT), 2014, pp. 167–174.' mla: 'Wiersema, Tobias, et al. “Memory Security in Reconfigurable Computers: Combining Formal Verification with Monitoring.” Proceedings of the International Conference on Field-Programmable Technology (FPT), 2014, pp. 167–74, doi:10.1109/FPT.2014.7082771.' short: 'T. Wiersema, S. Drzevitzky, M. Platzner, in: Proceedings of the International Conference on Field-Programmable Technology (FPT), 2014, pp. 167–174.' date_created: 2017-10-17T12:42:09Z date_updated: 2022-01-06T07:00:05Z ddc: - '040' department: - _id: '78' doi: 10.1109/FPT.2014.7082771 file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-20T06:57:44Z date_updated: 2018-03-20T06:57:44Z file_id: '1380' file_name: 399-wiersema14_fpt_IEEE_approved.pdf file_size: 404328 relation: main_file success: 1 file_date_updated: 2018-03-20T06:57:44Z has_accepted_license: '1' language: - iso: eng page: 167-174 project: - _id: '1' name: SFB 901 - _id: '12' name: SFB 901 - Subprojekt B4 - _id: '3' name: SFB 901 - Project Area B publication: Proceedings of the International Conference on Field-Programmable Technology (FPT) status: public title: 'Memory Security in Reconfigurable Computers: Combining Formal Verification with Monitoring' type: conference user_id: '477' year: '2014' ... --- _id: '400' author: - first_name: Mirko full_name: Bunse, Mirko last_name: Bunse citation: ama: 'Bunse M. Measuring Transformation-Induced Uncertainty in Service Matching: A Feasibility Study. Universität Paderborn; 2014.' apa: 'Bunse, M. (2014). Measuring Transformation-induced Uncertainty in Service Matching: A Feasibility Study. Universität Paderborn.' bibtex: '@book{Bunse_2014, title={Measuring Transformation-induced Uncertainty in Service Matching: A Feasibility Study}, publisher={Universität Paderborn}, author={Bunse, Mirko}, year={2014} }' chicago: 'Bunse, Mirko. Measuring Transformation-Induced Uncertainty in Service Matching: A Feasibility Study. Universität Paderborn, 2014.' ieee: 'M. Bunse, Measuring Transformation-induced Uncertainty in Service Matching: A Feasibility Study. Universität Paderborn, 2014.' mla: 'Bunse, Mirko. Measuring Transformation-Induced Uncertainty in Service Matching: A Feasibility Study. Universität Paderborn, 2014.' short: 'M. Bunse, Measuring Transformation-Induced Uncertainty in Service Matching: A Feasibility Study, Universität Paderborn, 2014.' date_created: 2017-10-17T12:42:09Z date_updated: 2022-01-06T07:00:06Z project: - _id: '1' name: SFB 901 - _id: '9' name: SFB 901 - Subprojekt B1 - _id: '3' name: SFB 901 - Project Area B publisher: Universität Paderborn status: public title: 'Measuring Transformation-induced Uncertainty in Service Matching: A Feasibility Study' type: bachelorsthesis user_id: '15504' year: '2014' ... --- _id: '401' abstract: - lang: eng text: Service matching approaches determine to what extent a provided service matches a requester's requirements. This process is based on service specifications describing functional (e.g., signatures) as well as non-functional properties (e.g., privacy policies). However, we cannot expect service specifications to be complete as providers do not want to share all details of their services' implementation. Moreover, creating complete specifications requires much effort. In this paper, we propose a novel service matching approach taking into account a service's signatures and privacy policies. In particular, our approach applies fuzzy matching techniques that are able to deal with incomplete service specifications. As a benefit, decision-making based on matching results is improved and service matching becomes better applicable in practice. author: - first_name: Marie Christin full_name: Platenius, Marie Christin last_name: Platenius - first_name: Svetlana full_name: Arifulina, Svetlana last_name: Arifulina - first_name: Ronald full_name: Petrlic, Ronald last_name: Petrlic - first_name: Wilhelm full_name: Schäfer, Wilhelm last_name: Schäfer citation: ama: 'Platenius MC, Arifulina S, Petrlic R, Schäfer W. Matching of Incomplete Service Specifications Exemplified by Privacy Policy Matching. In: Proceedings of the 4th International Workshop on Adaptive Services for the Future Internet. Communications in Computer and Information Science. ; 2014:6-17. doi:10.1007/978-3-319-14886-1_2' apa: Platenius, M. C., Arifulina, S., Petrlic, R., & Schäfer, W. (2014). Matching of Incomplete Service Specifications Exemplified by Privacy Policy Matching. In Proceedings of the 4th International Workshop on Adaptive Services for the Future Internet (pp. 6–17). https://doi.org/10.1007/978-3-319-14886-1_2 bibtex: '@inproceedings{Platenius_Arifulina_Petrlic_Schäfer_2014, series={Communications in Computer and Information Science}, title={Matching of Incomplete Service Specifications Exemplified by Privacy Policy Matching}, DOI={10.1007/978-3-319-14886-1_2}, booktitle={Proceedings of the 4th International Workshop on Adaptive Services for the Future Internet}, author={Platenius, Marie Christin and Arifulina, Svetlana and Petrlic, Ronald and Schäfer, Wilhelm}, year={2014}, pages={6–17}, collection={Communications in Computer and Information Science} }' chicago: Platenius, Marie Christin, Svetlana Arifulina, Ronald Petrlic, and Wilhelm Schäfer. “Matching of Incomplete Service Specifications Exemplified by Privacy Policy Matching.” In Proceedings of the 4th International Workshop on Adaptive Services for the Future Internet, 6–17. Communications in Computer and Information Science, 2014. https://doi.org/10.1007/978-3-319-14886-1_2. ieee: M. C. Platenius, S. Arifulina, R. Petrlic, and W. Schäfer, “Matching of Incomplete Service Specifications Exemplified by Privacy Policy Matching,” in Proceedings of the 4th International Workshop on Adaptive Services for the Future Internet, 2014, pp. 6–17. mla: Platenius, Marie Christin, et al. “Matching of Incomplete Service Specifications Exemplified by Privacy Policy Matching.” Proceedings of the 4th International Workshop on Adaptive Services for the Future Internet, 2014, pp. 6–17, doi:10.1007/978-3-319-14886-1_2. short: 'M.C. Platenius, S. Arifulina, R. Petrlic, W. Schäfer, in: Proceedings of the 4th International Workshop on Adaptive Services for the Future Internet, 2014, pp. 6–17.' date_created: 2017-10-17T12:42:10Z date_updated: 2022-01-06T07:00:07Z ddc: - '040' department: - _id: '66' - _id: '76' doi: 10.1007/978-3-319-14886-1_2 file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-16T11:38:13Z date_updated: 2018-03-16T11:38:13Z file_id: '1367' file_name: 401-WAS4FI2014.pdf file_size: 396656 relation: main_file success: 1 file_date_updated: 2018-03-16T11:38:13Z has_accepted_license: '1' language: - iso: eng page: 6-17 project: - _id: '1' name: SFB 901 - _id: '9' name: SFB 901 - Subprojekt B1 - _id: '13' name: SFB 901 - Subprojekt C1 - _id: '3' name: SFB 901 - Project Area B - _id: '4' name: SFB 901 - Project Area C publication: Proceedings of the 4th International Workshop on Adaptive Services for the Future Internet series_title: Communications in Computer and Information Science status: public title: Matching of Incomplete Service Specifications Exemplified by Privacy Policy Matching type: conference user_id: '477' year: '2014' ... --- _id: '402' abstract: - lang: eng text: Various approaches in service engineering are based on servicemarkets where brokers use service matching in order to performservice discovery. For matching, a broker translates the specifications ofproviders' services and requesters' requirements into her own specificationlanguage, in order to check their compliance using a matcher. Thebroker's success depends on the configuration of her language and itsmatcher because they in uence important properties like the effort forproviders and requesters to create suitable specifications as well as accuracyand runtime of matching. However, neither existing service specification languages, nor existing matching approaches are optimized insuch way. Our approach automatically provides brokers with an optimalconfiguration of a language and its matcher to improve her success ina given market with respect to her strategy. The approach is based onformalized configuration properties and a predefined set of configurationrules. author: - first_name: Svetlana full_name: Arifulina, Svetlana last_name: Arifulina - first_name: Marie Christin full_name: Platenius, Marie Christin last_name: Platenius - first_name: Christian full_name: Gerth, Christian last_name: Gerth - first_name: Steffen full_name: Becker, Steffen last_name: Becker - first_name: Gregor full_name: Engels, Gregor id: '107' last_name: Engels - first_name: Wilhelm full_name: Schäfer, Wilhelm last_name: Schäfer citation: ama: 'Arifulina S, Platenius MC, Gerth C, Becker S, Engels G, Schäfer W. Market-optimized Service Specification and Matching. In: Franch X, Ghose A, Lewis G, Bhiri S, eds. Proceedings of the 12th International Conference on Service Oriented Computing (ICSOC 2014). LNCS. ; 2014:543-550. doi:10.1007/978-3-662-45391-9_47' apa: Arifulina, S., Platenius, M. C., Gerth, C., Becker, S., Engels, G., & Schäfer, W. (2014). Market-optimized Service Specification and Matching. In X. Franch, A. Ghose, G. Lewis, & S. Bhiri (Eds.), Proceedings of the 12th International Conference on Service Oriented Computing (ICSOC 2014) (pp. 543–550). https://doi.org/10.1007/978-3-662-45391-9_47 bibtex: '@inproceedings{Arifulina_Platenius_Gerth_Becker_Engels_Schäfer_2014, series={LNCS}, title={Market-optimized Service Specification and Matching}, DOI={10.1007/978-3-662-45391-9_47}, booktitle={Proceedings of the 12th International Conference on Service Oriented Computing (ICSOC 2014)}, author={Arifulina, Svetlana and Platenius, Marie Christin and Gerth, Christian and Becker, Steffen and Engels, Gregor and Schäfer, Wilhelm}, editor={Franch, Xavier and Ghose, AdityaK. and Lewis, GraceA. and Bhiri, SamiEditors}, year={2014}, pages={543–550}, collection={LNCS} }' chicago: Arifulina, Svetlana, Marie Christin Platenius, Christian Gerth, Steffen Becker, Gregor Engels, and Wilhelm Schäfer. “Market-Optimized Service Specification and Matching.” In Proceedings of the 12th International Conference on Service Oriented Computing (ICSOC 2014), edited by Xavier Franch, AdityaK. Ghose, GraceA. Lewis, and Sami Bhiri, 543–50. LNCS, 2014. https://doi.org/10.1007/978-3-662-45391-9_47. ieee: S. Arifulina, M. C. Platenius, C. Gerth, S. Becker, G. Engels, and W. Schäfer, “Market-optimized Service Specification and Matching,” in Proceedings of the 12th International Conference on Service Oriented Computing (ICSOC 2014), 2014, pp. 543–550. mla: Arifulina, Svetlana, et al. “Market-Optimized Service Specification and Matching.” Proceedings of the 12th International Conference on Service Oriented Computing (ICSOC 2014), edited by Xavier Franch et al., 2014, pp. 543–50, doi:10.1007/978-3-662-45391-9_47. short: 'S. Arifulina, M.C. Platenius, C. Gerth, S. Becker, G. Engels, W. Schäfer, in: X. Franch, A. Ghose, G. Lewis, S. Bhiri (Eds.), Proceedings of the 12th International Conference on Service Oriented Computing (ICSOC 2014), 2014, pp. 543–550.' date_created: 2017-10-17T12:42:10Z date_updated: 2022-01-06T07:00:07Z ddc: - '040' department: - _id: '66' - _id: '76' doi: 10.1007/978-3-662-45391-9_47 editor: - first_name: Xavier full_name: Franch, Xavier last_name: Franch - first_name: AdityaK. full_name: Ghose, AdityaK. last_name: Ghose - first_name: GraceA. full_name: Lewis, GraceA. last_name: Lewis - first_name: Sami full_name: Bhiri, Sami last_name: Bhiri file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-16T11:38:59Z date_updated: 2018-03-16T11:38:59Z file_id: '1368' file_name: 402-ICSOC2014.pdf file_size: 377432 relation: main_file success: 1 file_date_updated: 2018-03-16T11:38:59Z has_accepted_license: '1' language: - iso: eng page: 543-550 project: - _id: '1' name: SFB 901 - _id: '9' name: SFB 901 - Subprojekt B1 - _id: '11' name: SFB 901 - Subproject B3 - _id: '3' name: SFB 901 - Project Area B publication: Proceedings of the 12th International Conference on Service Oriented Computing (ICSOC 2014) series_title: LNCS status: public title: Market-optimized Service Specification and Matching type: conference user_id: '477' year: '2014' ... --- _id: '403' author: - first_name: Tobias full_name: Martin Lohre, Tobias last_name: Martin Lohre citation: ama: Martin Lohre T. Machtverteilungen von Koalitionen im Fokus der politischen Realität. Universität Paderborn; 2014. apa: Martin Lohre, T. (2014). Machtverteilungen von Koalitionen im Fokus der politischen Realität. Universität Paderborn. bibtex: '@book{Martin Lohre_2014, title={Machtverteilungen von Koalitionen im Fokus der politischen Realität}, publisher={Universität Paderborn}, author={Martin Lohre, Tobias}, year={2014} }' chicago: Martin Lohre, Tobias. Machtverteilungen von Koalitionen im Fokus der politischen Realität. Universität Paderborn, 2014. ieee: T. Martin Lohre, Machtverteilungen von Koalitionen im Fokus der politischen Realität. Universität Paderborn, 2014. mla: Martin Lohre, Tobias. Machtverteilungen von Koalitionen im Fokus der politischen Realität. Universität Paderborn, 2014. short: T. Martin Lohre, Machtverteilungen von Koalitionen im Fokus der politischen Realität, Universität Paderborn, 2014. date_created: 2017-10-17T12:42:10Z date_updated: 2022-01-06T07:00:08Z language: - iso: ger project: - _id: '1' name: SFB 901 - _id: '7' name: SFB 901 - Subprojekt A3 - _id: '2' name: SFB 901 - Project Area A publisher: Universität Paderborn status: public title: Machtverteilungen von Koalitionen im Fokus der politischen Realität type: bachelorsthesis user_id: '477' year: '2014' ... --- _id: '404' author: - first_name: Dirk full_name: van Straaten, Dirk id: '10311' last_name: van Straaten citation: ama: van Straaten D. Kooperative Verhandlungen im duopolistischen Wettbewerb - eine spieltheoretische Analyse. Universität Paderborn; 2014. apa: van Straaten, D. (2014). Kooperative Verhandlungen im duopolistischen Wettbewerb - eine spieltheoretische Analyse. Universität Paderborn. bibtex: '@book{van Straaten_2014, title={Kooperative Verhandlungen im duopolistischen Wettbewerb - eine spieltheoretische Analyse}, publisher={Universität Paderborn}, author={van Straaten, Dirk}, year={2014} }' chicago: Straaten, Dirk van. Kooperative Verhandlungen im duopolistischen Wettbewerb - eine spieltheoretische Analyse. Universität Paderborn, 2014. ieee: D. van Straaten, Kooperative Verhandlungen im duopolistischen Wettbewerb - eine spieltheoretische Analyse. Universität Paderborn, 2014. mla: van Straaten, Dirk. Kooperative Verhandlungen im duopolistischen Wettbewerb - eine spieltheoretische Analyse. Universität Paderborn, 2014. short: D. van Straaten, Kooperative Verhandlungen im duopolistischen Wettbewerb - eine spieltheoretische Analyse, Universität Paderborn, 2014. date_created: 2017-10-17T12:42:10Z date_updated: 2022-01-06T07:00:08Z language: - iso: ger project: - _id: '1' name: SFB 901 - _id: '7' name: SFB 901 - Subprojekt A3 - _id: '2' name: SFB 901 - Project Area A publisher: Universität Paderborn status: public title: Kooperative Verhandlungen im duopolistischen Wettbewerb - eine spieltheoretische Analyse type: mastersthesis user_id: '477' year: '2014' ...