[{"keyword":["User Behaviour","Social Networking Sites","Numerical Representations","Multi-Theoretical Framework","Quantified Self","Pointification"],"type":"conference","department":[{"_id":"198"}],"date_created":"2019-09-19T12:14:55Z","abstract":[{"lang":"eng","text":"The new technological enhancements and the accessibility to varieties of online applications, enable users to collect personal data and perform self-evaluation through test, comparison and experimentation. The sparked interest in numbers and numbers as self-representative visualisations is prominent in social networking sites, which are the empirical setting for the present study. This paper sets out to establish a multi-theoretical framework which enables the investigation of emerging phenomena of the role of numbers in social networking sites. The proposed framework rests on three theoretical pillars: self-determination theory, heuristic decision making and behavioural economics. A discussion departs from these convictions to investigate user reactions and behaviour when faced with numerical representations in the SNS."}],"publication":"ECIS 2013 Proceedings","citation":{"mla":"Sjöklint, Mimmi, et al. “Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework.” <i>ECIS 2013 Proceedings</i>, Association for Information Systems. AIS Electronic Library (AISeL), 2013.","ama":"Sjöklint M, Constantiou I, Trier M. Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework. In: <i>ECIS 2013 Proceedings</i>. Association for Information Systems. AIS Electronic Library (AISeL); 2013.","bibtex":"@inproceedings{Sjöklint_Constantiou_Trier_2013, title={Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework}, booktitle={ECIS 2013 Proceedings}, publisher={Association for Information Systems. AIS Electronic Library (AISeL)}, author={Sjöklint, Mimmi and Constantiou, Ioanna and Trier, Matthias}, year={2013} }","apa":"Sjöklint, M., Constantiou, I., &#38; Trier, M. (2013). Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework. In <i>ECIS 2013 Proceedings</i>. Association for Information Systems. AIS Electronic Library (AISeL).","ieee":"M. Sjöklint, I. Constantiou, and M. Trier, “Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework,” in <i>ECIS 2013 Proceedings</i>, 2013.","short":"M. Sjöklint, I. Constantiou, M. Trier, in: ECIS 2013 Proceedings, Association for Information Systems. AIS Electronic Library (AISeL), 2013.","chicago":"Sjöklint, Mimmi, Ioanna Constantiou, and Matthias Trier. “Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework.” In <i>ECIS 2013 Proceedings</i>. Association for Information Systems. AIS Electronic Library (AISeL), 2013."},"user_id":"62809","_id":"13324","publisher":"Association for Information Systems. AIS Electronic Library (AISeL)","language":[{"iso":"eng"}],"date_updated":"2022-01-06T06:51:33Z","status":"public","title":"Numerical Representations and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research Framework","year":"2013","publication_identifier":{"isbn":["9783834924421"]},"author":[{"first_name":"Mimmi","last_name":"Sjöklint","full_name":"Sjöklint, Mimmi"},{"full_name":"Constantiou, Ioanna","first_name":"Ioanna","last_name":"Constantiou"},{"last_name":"Trier","first_name":"Matthias","full_name":"Trier, Matthias","id":"72744"}]},{"publication":"38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)","abstract":[{"lang":"eng","text":"In this paper we propose an approach to retrieve the absolute geometry of an acoustic sensor network, consisting of spatially distributed microphone arrays, from reverberant speech input. The calibration relies on direction of arrival measurements of the individual arrays. The proposed calibration algorithm is derived from a maximum-likelihood approach employing circular statistics. Since a sensor node consists of a microphone array with known intra-array geometry, we are able to obtain an absolute geometry estimate, including angles and distances. Simulation results demonstrate the effectiveness of the approach."}],"related_material":{"link":[{"relation":"supplementary_material","url":"https://groups.uni-paderborn.de/nt/pubs/2013/JaScHa13_Presentation.pdf","description":"Presentation"}]},"date_created":"2019-07-12T05:29:07Z","department":[{"_id":"54"}],"type":"conference","keyword":["Geometry calibration","microphone arrays","position self-calibration"],"publication_identifier":{"issn":["1520-6149"]},"author":[{"full_name":"Jacob, Florian","last_name":"Jacob","first_name":"Florian"},{"id":"460","last_name":"Schmalenstroeer","first_name":"Joerg","full_name":"Schmalenstroeer, Joerg"},{"id":"242","last_name":"Haeb-Umbach","first_name":"Reinhold","full_name":"Haeb-Umbach, Reinhold"}],"title":"DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic","year":"2013","date_updated":"2023-10-26T08:11:12Z","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/2013/JacSchHae_ICASSP2013_Rev2.pdf","open_access":"1"}],"doi":"10.1109/ICASSP.2013.6637620","citation":{"ieee":"F. Jacob, J. Schmalenstroeer, and R. Haeb-Umbach, “DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic,” in <i>38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)</i>, 2013, pp. 116–120, doi: <a href=\"https://doi.org/10.1109/ICASSP.2013.6637620\">10.1109/ICASSP.2013.6637620</a>.","apa":"Jacob, F., Schmalenstroeer, J., &#38; Haeb-Umbach, R. (2013). DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic. <i>38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)</i>, 116–120. <a href=\"https://doi.org/10.1109/ICASSP.2013.6637620\">https://doi.org/10.1109/ICASSP.2013.6637620</a>","chicago":"Jacob, Florian, Joerg Schmalenstroeer, and Reinhold Haeb-Umbach. “DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic.” In <i>38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)</i>, 116–20, 2013. <a href=\"https://doi.org/10.1109/ICASSP.2013.6637620\">https://doi.org/10.1109/ICASSP.2013.6637620</a>.","short":"F. Jacob, J. Schmalenstroeer, R. Haeb-Umbach, in: 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), 2013, pp. 116–120.","mla":"Jacob, Florian, et al. “DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic.” <i>38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)</i>, 2013, pp. 116–20, doi:<a href=\"https://doi.org/10.1109/ICASSP.2013.6637620\">10.1109/ICASSP.2013.6637620</a>.","bibtex":"@inproceedings{Jacob_Schmalenstroeer_Haeb-Umbach_2013, title={DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic}, DOI={<a href=\"https://doi.org/10.1109/ICASSP.2013.6637620\">10.1109/ICASSP.2013.6637620</a>}, booktitle={38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)}, author={Jacob, Florian and Schmalenstroeer, Joerg and Haeb-Umbach, Reinhold}, year={2013}, pages={116–120} }","ama":"Jacob F, Schmalenstroeer J, Haeb-Umbach R. DoA-Based Microphone Array Position Self-Calibration Using Circular Statistic. In: <i>38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)</i>. ; 2013:116-120. doi:<a href=\"https://doi.org/10.1109/ICASSP.2013.6637620\">10.1109/ICASSP.2013.6637620</a>"},"quality_controlled":"1","oa":"1","status":"public","_id":"11832","page":"116-120","user_id":"460"},{"date_created":"2023-01-17T13:25:30Z","keyword":["private firms","voluntary audit","cost of debt","self-selection bias","lemon problem"],"type":"conference","department":[{"_id":"635"},{"_id":"186"},{"_id":"551"}],"citation":{"bibtex":"@inproceedings{Kosi_Koren_Valentincic_2013, title={Does Financial Statement Audit Reduce the Cost of Debt of Private Firms?}, author={Kosi, Urska and Koren, Jerney and Valentincic, Aljosa}, year={2013} }","ama":"Kosi U, Koren J, Valentincic A. Does Financial Statement Audit Reduce the Cost of Debt of Private Firms? In: ; 2013.","mla":"Kosi, Urska, et al. <i>Does Financial Statement Audit Reduce the Cost of Debt of Private Firms?</i> 2013.","chicago":"Kosi, Urska, Jerney Koren, and Aljosa Valentincic. “Does Financial Statement Audit Reduce the Cost of Debt of Private Firms?,” 2013.","short":"U. Kosi, J. Koren, A. Valentincic, in: 2013.","ieee":"U. Kosi, J. Koren, and A. Valentincic, “Does Financial Statement Audit Reduce the Cost of Debt of Private Firms?,” presented at the 36th Annual Congress of European Accounting Association, Paris, France, 2013.","apa":"Kosi, U., Koren, J., &#38; Valentincic, A. (2013). <i>Does Financial Statement Audit Reduce the Cost of Debt of Private Firms?</i> 36th Annual Congress of European Accounting Association, Paris, France."},"extern":"1","abstract":[{"text":"This study examines the effect of audit on private firms’ cost of debt. We use a sample of 1,949 small private firms operating in the period 2006-2010 with optional financial statement audit. High quality data allows us to construct a more precise interest rate measure than existing studies employ. After controlling for obvious sources of demand for voluntary audits (ownership complexity, subsidiary status, bank relations), we find a robust central result that voluntary audits increase rather than decrease the cost of debt financing, contrary to several existing studies. This finding indicates that voluntary audits are generally treated as “adopting a label” and penalised by creditors, regardless of the perceived auditor quality as a result of the lemon problem in the audit market. Even Big-4 audits increase the cost of debt, likely as a result due to the lemon problem in the audit market, although the increase is smaller than for non-Big-4 audits. The results are sensitive to the estimation method used (OLS, Heckman’s two-step, PSM) and (sub-)sample selection. We show that disregarding the underlying assumptions of these estimation methods may lead to incorrect inferences. Additional analyses show that audited firms’ reported earnings are less informative about future operating performance than earnings of their unaudited counterparts. Our results also indicate that results are sensitive to cost of debt definition and this might have affected the results reported in the existing literature.","lang":"eng"}],"main_file_link":[{"url":"https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2373987"}],"language":[{"iso":"eng"}],"_id":"37109","user_id":"88603","status":"public","title":"Does Financial Statement Audit Reduce the Cost of Debt of Private Firms?","year":"2013","author":[{"id":"54068","first_name":"Urska","last_name":"Kosi","full_name":"Kosi, Urska"},{"first_name":"Jerney","last_name":"Koren","full_name":"Koren, Jerney"},{"first_name":"Aljosa","last_name":"Valentincic","full_name":"Valentincic, Aljosa"}],"conference":{"end_date":"2013-05-05","name":"36th Annual Congress of European Accounting Association","start_date":"2013-05-02","location":"Paris, France"},"date_updated":"2023-01-17T13:51:24Z"},{"year":"2012","title":"Model-driven Performance Engineering of Self-adaptive Systems: A Survey","status":"public","author":[{"full_name":"Becker, Matthias","last_name":"Becker","first_name":"Matthias"},{"last_name":"Luckey","first_name":"Markus","full_name":"Luckey, Markus"},{"full_name":"Becker, Steffen","first_name":"Steffen","last_name":"Becker"}],"publication_identifier":{"isbn":["978-1-4503-1346-9"]},"date_updated":"2022-01-06T06:55:39Z","page":"117-122","publisher":"ACM","_id":"22737","doi":"10.1145/2304696.2304716","user_id":"4870","publication":"{Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}","citation":{"ieee":"M. Becker, M. Luckey, and S. Becker, “Model-driven Performance Engineering of Self-adaptive Systems: A Survey,” in <i>{Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}</i>, 2012, pp. 117–122.","apa":"Becker, M., Luckey, M., &#38; Becker, S. (2012). Model-driven Performance Engineering of Self-adaptive Systems: A Survey. In <i>{Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}</i> (pp. 117–122). New York, NY, USA: ACM. <a href=\"https://doi.org/10.1145/2304696.2304716\">https://doi.org/10.1145/2304696.2304716</a>","chicago":"Becker, Matthias, Markus Luckey, and Steffen Becker. “Model-Driven Performance Engineering of Self-Adaptive Systems: A Survey.” In <i>{Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}</i>, 117–22. New York, NY, USA: ACM, 2012. <a href=\"https://doi.org/10.1145/2304696.2304716\">https://doi.org/10.1145/2304696.2304716</a>.","short":"M. Becker, M. Luckey, S. Becker, in: {Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}, ACM, New York, NY, USA, 2012, pp. 117–122.","mla":"Becker, Matthias, et al. “Model-Driven Performance Engineering of Self-Adaptive Systems: A Survey.” <i>{Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}</i>, ACM, 2012, pp. 117–22, doi:<a href=\"https://doi.org/10.1145/2304696.2304716\">10.1145/2304696.2304716</a>.","bibtex":"@inproceedings{Becker_Luckey_Becker_2012, place={New York, NY, USA}, title={Model-driven Performance Engineering of Self-adaptive Systems: A Survey}, DOI={<a href=\"https://doi.org/10.1145/2304696.2304716\">10.1145/2304696.2304716</a>}, booktitle={{Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}}, publisher={ACM}, author={Becker, Matthias and Luckey, Markus and Becker, Steffen}, year={2012}, pages={117–122} }","ama":"Becker M, Luckey M, Becker S. Model-driven Performance Engineering of Self-adaptive Systems: A Survey. In: <i>{Proceedings of the 8th International ACM SIGSOFT Conference on Quality of Software Architectures (QoSA)}</i>. New York, NY, USA: ACM; 2012:117-122. doi:<a href=\"https://doi.org/10.1145/2304696.2304716\">10.1145/2304696.2304716</a>"},"place":"New York, NY, USA","date_created":"2021-07-15T08:38:08Z","keyword":["model-driven performance engineering","self-*","Self-adaptation","software performance"],"type":"conference"},{"date_updated":"2022-01-06T07:02:37Z","publication_status":"published","intvolume":"        32","article_type":"original","year":"2012","title":"Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics.","author":[{"full_name":"Schumann, Jan H","first_name":"Jan H","last_name":"Schumann"},{"id":"36392","first_name":"Nancy","last_name":"Wünderlich","full_name":"Wünderlich, Nancy"},{"last_name":"Wangenheim","first_name":"Florian","full_name":"Wangenheim, Florian"}],"language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"The role of information and communication technology for economic growth has been emphasized repeatedly. Technological breakthroughs have generated new forms of services, such as self-services or remote services. Although these encounters are qualitatively different from traditional service provision, prior service management literature thus far had paid little attention to theory development and the systematization of technology-based service encounters. To fill this research gap, the present study outlines how new types of technology-based services fit into existing service typologies and provides an extension of existing frameworks to capture their unique characteristics. These insights in turn offer managerial implications and highlight open research questions."}],"publication":"Technovation","issue":"2","keyword":["Services","Remote services","Self-services","Technology mediation"],"type":"journal_article","department":[{"_id":"181"}],"date_created":"2018-11-16T09:43:45Z","status":"public","user_id":"37741","volume":32,"page":"133-143","publisher":"Elsevier","_id":"5718","citation":{"ieee":"J. H. Schumann, N. Wünderlich, and F. Wangenheim, “Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics.,” <i>Technovation</i>, vol. 32, no. 2, pp. 133–143, 2012.","apa":"Schumann, J. H., Wünderlich, N., &#38; Wangenheim, F. (2012). Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics. <i>Technovation</i>, <i>32</i>(2), 133–143.","short":"J.H. Schumann, N. Wünderlich, F. Wangenheim, Technovation 32 (2012) 133–143.","chicago":"Schumann, Jan H, Nancy Wünderlich, and Florian Wangenheim. “Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics.” <i>Technovation</i> 32, no. 2 (2012): 133–43.","mla":"Schumann, Jan H., et al. “Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics.” <i>Technovation</i>, vol. 32, no. 2, Elsevier, 2012, pp. 133–43.","bibtex":"@article{Schumann_Wünderlich_Wangenheim_2012, title={Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics.}, volume={32}, number={2}, journal={Technovation}, publisher={Elsevier}, author={Schumann, Jan H and Wünderlich, Nancy and Wangenheim, Florian}, year={2012}, pages={133–143} }","ama":"Schumann JH, Wünderlich N, Wangenheim F. Technology Mediation in Service Delivery: A New Typology and an Agenda for Managers and Academics. <i>Technovation</i>. 2012;32(2):133-143."}},{"abstract":[{"lang":"eng","text":"To optimize the ultrasound irradiation for cavitation based ultrasound applications like sonochemistry or ultrasound cleaning, the correlation between cavitation intensity and the resulting effect on the process is of interest. Furthermore, changing conditions like temperature and pressure result in varying acoustic properties of the liquid. That might necessitate an adaption of the ultrasound irradiation. To detect such changes during operation, process monitoring is desired. Labor intensive processes, that might be carried out for several hours, also require process monitoring to increase their reliability by detection of changes or malfunctions during operation. In some applications cavitation detection and monitoring can be achieved by the application of sensors in the sound field. Though the application of sensors is possible, this necessitates modifications on the system and the sensor might disturb the sound field. In other applications harsh, process conditions prohibit the application of sensors in the sound field. Therefore alternative techniques for cavitation detection and monitoring are desired. The applicability of an external microphone and a self-sensing ultrasound transducer for cavitation detection were experimentally investigated. Both methods were found to be suitable and easily applicable."}],"quality_controlled":"1","citation":{"ieee":"P. Bornmann, T. Hemsel, W. Sextro, T. Maeda, and T. Morita, “Non-perturbing cavitation detection / monitoring in sonochemical reactors,” in <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>, 2012, pp. 1141–1144.","apa":"Bornmann, P., Hemsel, T., Sextro, W., Maeda, T., &#38; Morita, T. (2012). Non-perturbing cavitation detection / monitoring in sonochemical reactors. In <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i> (pp. 1141–1144). <a href=\"https://doi.org/10.1109/ULTSYM.2012.0284\">https://doi.org/10.1109/ULTSYM.2012.0284</a>","mla":"Bornmann, Peter, et al. “Non-Perturbing Cavitation Detection / Monitoring in Sonochemical Reactors.” <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>, 2012, pp. 1141–44, doi:<a href=\"https://doi.org/10.1109/ULTSYM.2012.0284\">10.1109/ULTSYM.2012.0284</a>.","bibtex":"@inproceedings{Bornmann_Hemsel_Sextro_Maeda_Morita_2012, title={Non-perturbing cavitation detection / monitoring in sonochemical reactors}, DOI={<a href=\"https://doi.org/10.1109/ULTSYM.2012.0284\">10.1109/ULTSYM.2012.0284</a>}, booktitle={Ultrasonics Symposium (IUS), 2012 IEEE International}, author={Bornmann, Peter and Hemsel, Tobias and Sextro, Walter and Maeda, Takafumi and Morita, Takeshi}, year={2012}, pages={1141–1144} }","ama":"Bornmann P, Hemsel T, Sextro W, Maeda T, Morita T. Non-perturbing cavitation detection / monitoring in sonochemical reactors. In: <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>. ; 2012:1141-1144. doi:<a href=\"https://doi.org/10.1109/ULTSYM.2012.0284\">10.1109/ULTSYM.2012.0284</a>","short":"P. Bornmann, T. Hemsel, W. Sextro, T. Maeda, T. Morita, in: Ultrasonics Symposium (IUS), 2012 IEEE International, 2012, pp. 1141–1144.","chicago":"Bornmann, Peter, Tobias Hemsel, Walter Sextro, Takafumi Maeda, and Takeshi Morita. “Non-Perturbing Cavitation Detection / Monitoring in Sonochemical Reactors.” In <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>, 1141–44, 2012. <a href=\"https://doi.org/10.1109/ULTSYM.2012.0284\">https://doi.org/10.1109/ULTSYM.2012.0284</a>."},"publication":"Ultrasonics Symposium (IUS), 2012 IEEE International","department":[{"_id":"151"}],"keyword":["cavitation","chemical reactors","microphones","process monitoring","reliability","ultrasonic applications","ultrasonic waves","acoustic properties","cavitation based ultrasound applications","cavitation intensity","change detection reliability","external microphone","malfunction detection reliability","nonperturbing cavitation detection","nonperturbing cavitation monitoring","process monitoring","self-sensing ultrasound transducer","sonochemical reactors","sonochemistry","ultrasound cleaning","ultrasound irradiation","Acoustics","Liquids","Monitoring","Sensors","Sonar equipment","Transducers","Ultrasonic imaging"],"type":"conference","date_created":"2019-05-13T13:18:49Z","date_updated":"2022-01-06T07:04:20Z","publication_identifier":{"issn":["1948-5719"]},"author":[{"last_name":"Bornmann","first_name":"Peter","full_name":"Bornmann, Peter"},{"id":"210","first_name":"Tobias","last_name":"Hemsel","full_name":"Hemsel, Tobias"},{"id":"21220","full_name":"Sextro, Walter","last_name":"Sextro","first_name":"Walter"},{"first_name":"Takafumi","last_name":"Maeda","full_name":"Maeda, Takafumi"},{"first_name":"Takeshi","last_name":"Morita","full_name":"Morita, Takeshi"}],"status":"public","title":"Non-perturbing cavitation detection / monitoring in sonochemical reactors","year":"2012","user_id":"55222","doi":"10.1109/ULTSYM.2012.0284","language":[{"iso":"eng"}],"_id":"9783","page":"1141-1144"},{"page":"5-15","_id":"9786","language":[{"iso":"eng"}],"user_id":"55222","volume":24,"title":"Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle","status":"public","year":"2012","author":[{"last_name":"Klöpper","first_name":"Benjamin","full_name":"Klöpper, Benjamin"},{"full_name":"Sondermann-Wölke, Christoph","last_name":"Sondermann-Wölke","first_name":"Christoph"},{"full_name":"Romaus, Christoph","first_name":"Christoph","last_name":"Romaus"}],"date_updated":"2022-01-06T07:04:20Z","intvolume":"        24","date_created":"2019-05-13T13:23:45Z","keyword":["self-optimizing systems","dependability","probabilistic planning","energy management"],"type":"journal_article","department":[{"_id":"151"}],"publication":"Journal of Robotics and Mechatronics","issue":"1","citation":{"ama":"Klöpper B, Sondermann-Wölke C, Romaus C. Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle. <i>Journal of Robotics and Mechatronics</i>. 2012;24(1):5-15.","bibtex":"@article{Klöpper_Sondermann-Wölke_Romaus_2012, title={Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle}, volume={24}, number={1}, journal={Journal of Robotics and Mechatronics}, author={Klöpper, Benjamin and Sondermann-Wölke, Christoph and Romaus, Christoph}, year={2012}, pages={5–15} }","mla":"Klöpper, Benjamin, et al. “Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle.” <i>Journal of Robotics and Mechatronics</i>, vol. 24, no. 1, 2012, pp. 5–15.","chicago":"Klöpper, Benjamin, Christoph Sondermann-Wölke, and Christoph Romaus. “Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle.” <i>Journal of Robotics and Mechatronics</i> 24, no. 1 (2012): 5–15.","short":"B. Klöpper, C. Sondermann-Wölke, C. Romaus, Journal of Robotics and Mechatronics 24 (2012) 5–15.","apa":"Klöpper, B., Sondermann-Wölke, C., &#38; Romaus, C. (2012). Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle. <i>Journal of Robotics and Mechatronics</i>, <i>24</i>(1), 5–15.","ieee":"B. Klöpper, C. Sondermann-Wölke, and C. Romaus, “Probabilistic Planning for Predictive Condition Monitoring and Adaptation Within the Self-Optimizing Energy Management of an Autonomous Railway Vehicle,” <i>Journal of Robotics and Mechatronics</i>, vol. 24, no. 1, pp. 5–15, 2012."},"abstract":[{"text":"Self-optimizing mechatronic systems are a new class of technical systems. On the one hand, new challenges regarding dependability arise from their additional complexity and adaptivity. On the other hand, their abilities enable new concepts and methods to improve the dependability of mechatronic systems. This paper introduces a multi-level dependability concept for selfoptimizing mechatronic systems and shows how probabilistic planning can be used to improve the availability and reliability of systems in the operating phase. The general idea to improve the availability of autonomous systems by applying probabilistic planning methods to avoid energy shortages is exemplified on the example of an innovative railway vehicle.","lang":"eng"}],"quality_controlled":"1"},{"related_material":{"link":[{"description":"Video","url":"https://groups.uni-paderborn.de/nt/pubs/2012/Microphine_Array_Position_Self-Calibration_from_Reverberant_Speech_Input.mp4","relation":"supplementary_material"},{"url":"https://groups.uni-paderborn.de/nt/pubs/2012/JaScHa12_Poster.pdf","relation":"supplementary_material","description":"Poster"},{"description":"Demonstrator","relation":"supplementary_material","url":"https://groups.uni-paderborn.de/nt/pubs/2012/JaScHa12_Demonstrator.pdf"}]},"quality_controlled":"1","abstract":[{"lang":"eng","text":"In this paper we propose an approach to retrieve the geometry of an acoustic sensor network consisting of spatially distributed microphone arrays from unconstrained speech input. The calibration relies on Direction of Arrival (DoA) measurements which do not require a clock synchronization among the sensor nodes. The calibration problem is formulated as a cost function optimization task, which minimizes the squared differences between measured and predicted observations and additionally avoids the existence of minima that correspond to mirrored versions of the actual sensor orientations. Further, outlier measurements caused by reverberation are mitigated by a Random Sample Consensus (RANSAC) approach. The experimental results show a mean positioning error of at most 25 cm even in highly reverberant environments."}],"citation":{"ama":"Jacob F, Schmalenstroeer J, Haeb-Umbach R. Microphone Array Position Self-Calibration from Reverberant Speech Input. In: <i>International Workshop on Acoustic Signal Enhancement (IWAENC 2012)</i>. ; 2012.","bibtex":"@inproceedings{Jacob_Schmalenstroeer_Haeb-Umbach_2012, title={Microphone Array Position Self-Calibration from Reverberant Speech Input}, booktitle={International Workshop on Acoustic Signal Enhancement (IWAENC 2012)}, author={Jacob, Florian and Schmalenstroeer, Joerg and Haeb-Umbach, Reinhold}, year={2012} }","mla":"Jacob, Florian, et al. “Microphone Array Position Self-Calibration from Reverberant Speech Input.” <i>International Workshop on Acoustic Signal Enhancement (IWAENC 2012)</i>, 2012.","short":"F. Jacob, J. Schmalenstroeer, R. Haeb-Umbach, in: International Workshop on Acoustic Signal Enhancement (IWAENC 2012), 2012.","chicago":"Jacob, Florian, Joerg Schmalenstroeer, and Reinhold Haeb-Umbach. “Microphone Array Position Self-Calibration from Reverberant Speech Input.” In <i>International Workshop on Acoustic Signal Enhancement (IWAENC 2012)</i>, 2012.","apa":"Jacob, F., Schmalenstroeer, J., &#38; Haeb-Umbach, R. (2012). Microphone Array Position Self-Calibration from Reverberant Speech Input. <i>International Workshop on Acoustic Signal Enhancement (IWAENC 2012)</i>.","ieee":"F. Jacob, J. Schmalenstroeer, and R. Haeb-Umbach, “Microphone Array Position Self-Calibration from Reverberant Speech Input,” 2012."},"publication":"International Workshop on Acoustic Signal Enhancement (IWAENC 2012)","oa":"1","department":[{"_id":"54"}],"type":"conference","keyword":["Unsupervised","geometry calibration","microphone arrays","position self-calibration"],"date_created":"2019-07-12T05:29:08Z","date_updated":"2023-10-26T08:10:52Z","author":[{"first_name":"Florian","last_name":"Jacob","full_name":"Jacob, Florian"},{"full_name":"Schmalenstroeer, Joerg","first_name":"Joerg","last_name":"Schmalenstroeer","id":"460"},{"last_name":"Haeb-Umbach","first_name":"Reinhold","full_name":"Haeb-Umbach, Reinhold","id":"242"}],"year":"2012","status":"public","title":"Microphone Array Position Self-Calibration from Reverberant Speech Input","user_id":"460","language":[{"iso":"eng"}],"_id":"11833","main_file_link":[{"open_access":"1","url":"https://groups.uni-paderborn.de/nt/pubs/2012/JaScHa12.pdf"}]},{"volume":42,"user_id":"20798","publisher":"Elsevier BV","_id":"4551","page":"2749-2752","status":"public","citation":{"short":"M. Mehta, D. Reuter, A. Melnikov, A.D. Wieck, S. Michaelis de Vasconcellos, T. Baumgarten, A. Zrenner, C. Meier, Physica E: Low-Dimensional Systems and Nanostructures 42 (2010) 2749–2752.","chicago":"Mehta, Minisha, Dirk Reuter, Alexander Melnikov, Andreas D. Wieck, Steffen Michaelis de Vasconcellos, Tim Baumgarten, Artur Zrenner, and Cedrik Meier. “Intentionally Positioned Self-Assembled InAs Quantum Dots in an Electroluminescent p–i–n Junction Diode.” <i>Physica E: Low-Dimensional Systems and Nanostructures</i> 42, no. 10 (2010): 2749–52. <a href=\"https://doi.org/10.1016/j.physe.2009.12.053\">https://doi.org/10.1016/j.physe.2009.12.053</a>.","apa":"Mehta, M., Reuter, D., Melnikov, A., Wieck, A. D., Michaelis de Vasconcellos, S., Baumgarten, T., … Meier, C. (2010). Intentionally positioned self-assembled InAs quantum dots in an electroluminescent p–i–n junction diode. <i>Physica E: Low-Dimensional Systems and Nanostructures</i>, <i>42</i>(10), 2749–2752. <a href=\"https://doi.org/10.1016/j.physe.2009.12.053\">https://doi.org/10.1016/j.physe.2009.12.053</a>","ieee":"M. Mehta <i>et al.</i>, “Intentionally positioned self-assembled InAs quantum dots in an electroluminescent p–i–n junction diode,” <i>Physica E: Low-dimensional Systems and Nanostructures</i>, vol. 42, no. 10, pp. 2749–2752, 2010.","ama":"Mehta M, Reuter D, Melnikov A, et al. Intentionally positioned self-assembled InAs quantum dots in an electroluminescent p–i–n junction diode. <i>Physica E: Low-dimensional Systems and Nanostructures</i>. 2010;42(10):2749-2752. doi:<a href=\"https://doi.org/10.1016/j.physe.2009.12.053\">10.1016/j.physe.2009.12.053</a>","bibtex":"@article{Mehta_Reuter_Melnikov_Wieck_Michaelis de Vasconcellos_Baumgarten_Zrenner_Meier_2010, title={Intentionally positioned self-assembled InAs quantum dots in an electroluminescent p–i–n junction diode}, volume={42}, DOI={<a href=\"https://doi.org/10.1016/j.physe.2009.12.053\">10.1016/j.physe.2009.12.053</a>}, number={10}, journal={Physica E: Low-dimensional Systems and Nanostructures}, publisher={Elsevier BV}, author={Mehta, Minisha and Reuter, Dirk and Melnikov, Alexander and Wieck, Andreas D. and Michaelis de Vasconcellos, Steffen and Baumgarten, Tim and Zrenner, Artur and Meier, Cedrik}, year={2010}, pages={2749–2752} }","mla":"Mehta, Minisha, et al. “Intentionally Positioned Self-Assembled InAs Quantum Dots in an Electroluminescent p–i–n Junction Diode.” <i>Physica E: Low-Dimensional Systems and Nanostructures</i>, vol. 42, no. 10, Elsevier BV, 2010, pp. 2749–52, doi:<a href=\"https://doi.org/10.1016/j.physe.2009.12.053\">10.1016/j.physe.2009.12.053</a>."},"doi":"10.1016/j.physe.2009.12.053","language":[{"iso":"eng"}],"article_type":"original","intvolume":"        42","publication_status":"published","date_updated":"2022-01-06T07:01:09Z","author":[{"full_name":"Mehta, Minisha","last_name":"Mehta","first_name":"Minisha"},{"last_name":"Reuter","first_name":"Dirk","full_name":"Reuter, Dirk","id":"37763"},{"full_name":"Melnikov, Alexander","first_name":"Alexander","last_name":"Melnikov"},{"last_name":"Wieck","first_name":"Andreas D.","full_name":"Wieck, Andreas D."},{"first_name":"Steffen","last_name":"Michaelis de Vasconcellos","full_name":"Michaelis de Vasconcellos, Steffen"},{"first_name":"Tim","last_name":"Baumgarten","full_name":"Baumgarten, Tim"},{"id":"606","first_name":"Artur","last_name":"Zrenner","orcid":"0000-0002-5190-0944","full_name":"Zrenner, Artur"},{"last_name":"Meier","orcid":"https://orcid.org/0000-0002-3787-3572","first_name":"Cedrik","full_name":"Meier, Cedrik","id":"20798"}],"publication_identifier":{"issn":["1386-9477"]},"title":"Intentionally positioned self-assembled InAs quantum dots in an electroluminescent p–i–n junction diode","year":"2010","department":[{"_id":"15"},{"_id":"230"},{"_id":"35"},{"_id":"287"}],"type":"journal_article","keyword":["Molecular beam epitaxy","Focused ion beam","Self-assembled quantum dot","Electroluminescence"],"date_created":"2018-09-20T12:42:40Z","abstract":[{"text":"An intentional positioning of optically active quantum dots using site-selective growth by a combination of molecular beam epitaxy (MBE) and focused ion beam (FIB) implantation in an all-ultra-high-vacuum (UHV) setup has been successfully demonstrated. A square array of periodic holes on GaAs substrate was fabricated with FIB of 30 keV ions followed by an in situ annealing step. Subsequently, the patterned holes were overgrown with an optimized amount of InAs in order to achieve site-selective growth of the QDs on the patterned holes. Under well-optimized conditions, a selectivity of single quantum dot growth in the patterned holes of 52% was achieved. Thereafter, carrier injection and subsequent radiative recombination from the positioned InAs/GaAs self-assembled QDs was investigated by embedding the QDs in the intrinsic part of a GaAs-based p–i–n junction device. Electroluminescence spectra taken at 77 K show interband transitions up to the fifth excited state from the QDs.","lang":"eng"}],"publication":"Physica E: Low-dimensional Systems and Nanostructures","issue":"10"},{"quality_controlled":"1","abstract":[{"text":"Self-optimizing systems are able to adapt their behavior autonomously according to their current self-determined objectives. Unforeseen influences could lead to dependability-critical behavior of the system. Methods are required which secure self-optimizing systems during operation. These methods to increase the dependability of the system should already be taken into consideration in the design process. This paper presents a guideline for the dependability-oriented design of self-optimizing systems, which integrates established classical methods like failure mode and effects analysis as well as methods based on self-optimization. On the one hand self-optimization is used to increase the dependability of the system by integrating objectives like safety, availability, and reliability to the objectives of the system. On the other hand methods are required to ensure the self-optimization itself. As basis for this guideline serves the principle solution of the system. The six phases of the guideline extend the design process and lead to an enhanced principle solution. Additionally, the guideline illustrates phases to implement and validate the self-optimizing system. The proposed guideline is applied to an innovative rail-bound vehicle, called RailCab, which is equipped with self-optimizing function modules.","lang":"eng"}],"citation":{"apa":"Sondermann-Wölke, C., Hemsel, T., Sextro, W., Gausemeier, J., &#38; Pook, S. (2010). Guideline for the dependability-oriented design of self-optimizing systems. In <i>Industrial Informatics (INDIN), 2010 8th IEEE International Conference on</i> (pp. 739–744). <a href=\"https://doi.org/10.1109/INDIN.2010.5549490\">https://doi.org/10.1109/INDIN.2010.5549490</a>","ieee":"C. Sondermann-Wölke, T. Hemsel, W. Sextro, J. Gausemeier, and S. Pook, “Guideline for the dependability-oriented design of self-optimizing systems,” in <i>Industrial Informatics (INDIN), 2010 8th IEEE International Conference on</i>, 2010, pp. 739–744.","chicago":"Sondermann-Wölke, Christoph, Tobias Hemsel, Walter Sextro, Jürgen Gausemeier, and Sebastian Pook. “Guideline for the Dependability-Oriented Design of Self-Optimizing Systems.” In <i>Industrial Informatics (INDIN), 2010 8th IEEE International Conference On</i>, 739–44, 2010. <a href=\"https://doi.org/10.1109/INDIN.2010.5549490\">https://doi.org/10.1109/INDIN.2010.5549490</a>.","short":"C. Sondermann-Wölke, T. Hemsel, W. Sextro, J. Gausemeier, S. Pook, in: Industrial Informatics (INDIN), 2010 8th IEEE International Conference On, 2010, pp. 739–744.","mla":"Sondermann-Wölke, Christoph, et al. “Guideline for the Dependability-Oriented Design of Self-Optimizing Systems.” <i>Industrial Informatics (INDIN), 2010 8th IEEE International Conference On</i>, 2010, pp. 739–44, doi:<a href=\"https://doi.org/10.1109/INDIN.2010.5549490\">10.1109/INDIN.2010.5549490</a>.","ama":"Sondermann-Wölke C, Hemsel T, Sextro W, Gausemeier J, Pook S. Guideline for the dependability-oriented design of self-optimizing systems. In: <i>Industrial Informatics (INDIN), 2010 8th IEEE International Conference On</i>. ; 2010:739-744. doi:<a href=\"https://doi.org/10.1109/INDIN.2010.5549490\">10.1109/INDIN.2010.5549490</a>","bibtex":"@inproceedings{Sondermann-Wölke_Hemsel_Sextro_Gausemeier_Pook_2010, title={Guideline for the dependability-oriented design of self-optimizing systems}, DOI={<a href=\"https://doi.org/10.1109/INDIN.2010.5549490\">10.1109/INDIN.2010.5549490</a>}, booktitle={Industrial Informatics (INDIN), 2010 8th IEEE International Conference on}, author={Sondermann-Wölke, Christoph and Hemsel, Tobias and Sextro, Walter and Gausemeier, Jürgen and Pook, Sebastian}, year={2010}, pages={739–744} }"},"publication":"Industrial Informatics (INDIN), 2010 8th IEEE International Conference on","department":[{"_id":"151"}],"type":"conference","keyword":["RailCab","dependability-critical behavior","dependability-oriented design","failure mode","rail-bound vehicle","secure self-optimizing systems","self-optimizing function modules","optimisation","railways","self-adjusting systems"],"date_created":"2019-05-13T10:25:26Z","date_updated":"2022-01-06T07:04:19Z","author":[{"full_name":"Sondermann-Wölke, Christoph","last_name":"Sondermann-Wölke","first_name":"Christoph"},{"id":"210","full_name":"Hemsel, Tobias","last_name":"Hemsel","first_name":"Tobias"},{"full_name":"Sextro, Walter","first_name":"Walter","last_name":"Sextro","id":"21220"},{"first_name":"Jürgen","last_name":"Gausemeier","full_name":"Gausemeier, Jürgen"},{"full_name":"Pook, Sebastian","first_name":"Sebastian","last_name":"Pook"}],"title":"Guideline for the dependability-oriented design of self-optimizing systems","year":"2010","status":"public","doi":"10.1109/INDIN.2010.5549490","user_id":"55222","_id":"9760","language":[{"iso":"eng"}],"page":"739 -744"},{"date_created":"2019-05-13T10:35:39Z","keyword":["availability","dependability concept","multilevel dependability concept","railway vehicle","reliability","self optimizing active guidance system","self optimizing railway guidance system","situation classification","system behavior monitoring","optimal control","railways","reliability theory","self-adjusting systems"],"type":"conference","department":[{"_id":"151"}],"publication":"Reliability and Maintainability Symposium (RAMS), 2010 Proceedings - Annual","citation":{"short":"C. Sondermann-Wölke, J. Geisler, W. Sextro, in: Reliability and Maintainability Symposium (RAMS), 2010 Proceedings - Annual, 2010, pp. 1–6.","chicago":"Sondermann-Wölke, Christoph, Jens Geisler, and Walter Sextro. “Increasing the Reliability of a Self-Optimizing Railway Guidance System.” In <i>Reliability and Maintainability Symposium (RAMS), 2010 Proceedings - Annual</i>, 1–6, 2010. <a href=\"https://doi.org/10.1109/RAMS.2010.5448080\">https://doi.org/10.1109/RAMS.2010.5448080</a>.","apa":"Sondermann-Wölke, C., Geisler, J., &#38; Sextro, W. (2010). Increasing the reliability of a self-optimizing railway guidance system. In <i>Reliability and Maintainability Symposium (RAMS), 2010 Proceedings - Annual</i> (pp. 1–6). <a href=\"https://doi.org/10.1109/RAMS.2010.5448080\">https://doi.org/10.1109/RAMS.2010.5448080</a>","ieee":"C. Sondermann-Wölke, J. Geisler, and W. Sextro, “Increasing the reliability of a self-optimizing railway guidance system,” in <i>Reliability and Maintainability Symposium (RAMS), 2010 Proceedings - Annual</i>, 2010, pp. 1–6.","ama":"Sondermann-Wölke C, Geisler J, Sextro W. Increasing the reliability of a self-optimizing railway guidance system. In: <i>Reliability and Maintainability Symposium (RAMS), 2010 Proceedings - Annual</i>. ; 2010:1-6. doi:<a href=\"https://doi.org/10.1109/RAMS.2010.5448080\">10.1109/RAMS.2010.5448080</a>","bibtex":"@inproceedings{Sondermann-Wölke_Geisler_Sextro_2010, title={Increasing the reliability of a self-optimizing railway guidance system}, DOI={<a href=\"https://doi.org/10.1109/RAMS.2010.5448080\">10.1109/RAMS.2010.5448080</a>}, booktitle={Reliability and Maintainability Symposium (RAMS), 2010 Proceedings - Annual}, author={Sondermann-Wölke, Christoph and Geisler, Jens and Sextro, Walter}, year={2010}, pages={1–6} }","mla":"Sondermann-Wölke, Christoph, et al. “Increasing the Reliability of a Self-Optimizing Railway Guidance System.” <i>Reliability and Maintainability Symposium (RAMS), 2010 Proceedings - Annual</i>, 2010, pp. 1–6, doi:<a href=\"https://doi.org/10.1109/RAMS.2010.5448080\">10.1109/RAMS.2010.5448080</a>."},"abstract":[{"lang":"eng","text":"Recent advances in information processing enable new kinds of technical systems, called self-optimizing systems. These systems are able to adapt their objectives and their behavior according to the current situation and influences autonomously. This behavior adaptation is non-deterministic and hence self-optimization is a risk to the system, e.g. if the result of the self-optimization process does not match the suddenly changed situation. In contrary, self-optimization could be used to increase the dependability by pursuing objectives like reliability and availability. In our preceding publications we introduced the so called multi-level dependability concept to cope with this new kind of systems (cf. [6]). This concept comprises the monitoring of the system behavior, the classification of the current situation, and the selection of the appropriate measure, if reliability limits are exceeded. In this paper we present for the first time experimental results. The dependability concept is implemented in the self-optimizing active guidance system of a railway vehicle. The test drives illustrate clearly that the proposed concept is able to cope with, e.g., sensor failures, and is able to increase the reliability and availability of the active guidance module."}],"quality_controlled":"1","page":"1 -6","language":[{"iso":"eng"}],"_id":"9763","user_id":"55222","doi":"10.1109/RAMS.2010.5448080","title":"Increasing the reliability of a self-optimizing railway guidance system","status":"public","year":"2010","publication_identifier":{"issn":["0149-144X"]},"author":[{"full_name":"Sondermann-Wölke, Christoph","last_name":"Sondermann-Wölke","first_name":"Christoph"},{"last_name":"Geisler","first_name":"Jens","full_name":"Geisler, Jens"},{"id":"21220","last_name":"Sextro","first_name":"Walter","full_name":"Sextro, Walter"}],"date_updated":"2022-01-06T07:04:19Z"},{"keyword":["multilevel dependability concept","probabilistic planning","self-optimizing mechatronic systems","systems reliability","mechatronics","planning (artificial intelligence)","self-adjusting systems"],"type":"conference","department":[{"_id":"151"}],"date_created":"2019-05-13T09:03:57Z","abstract":[{"lang":"eng","text":"Self-optimizing mechatronic systems are a new class of technical systems. On the one hand, new challenges regarding dependability arise from their additional complexity and adaptivity. On the other hand, their abilities enable new concepts and methods to improve the dependability of mechatronic systems. This paper introduces a multi-level dependability concept for self-optimizing mechatronic systems and shows how planning can be used to improve the availability and reliability of systems in the operating stages."}],"quality_controlled":"1","publication":"Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium on","citation":{"mla":"Klöpper, Benjamin, et al. “Probabilistic Planning Integrated in a Multi-Level Dependability Concept for Mechatronic Systems.” <i>Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium On</i>, 2009, pp. 104–11, doi:<a href=\"https://doi.org/10.1109/CICA.2009.4982790\">10.1109/CICA.2009.4982790</a>.","bibtex":"@inproceedings{Klöpper_Sondermann-Wölke_Romaus_Vöcking_2009, title={Probabilistic planning integrated in a multi-level dependability concept for mechatronic systems}, DOI={<a href=\"https://doi.org/10.1109/CICA.2009.4982790\">10.1109/CICA.2009.4982790</a>}, booktitle={Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium on}, author={Klöpper, Benjamin and Sondermann-Wölke, Christoph and Romaus, Christoph and Vöcking, Henner}, year={2009}, pages={104–111} }","ama":"Klöpper B, Sondermann-Wölke C, Romaus C, Vöcking H. Probabilistic planning integrated in a multi-level dependability concept for mechatronic systems. In: <i>Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium On</i>. ; 2009:104-111. doi:<a href=\"https://doi.org/10.1109/CICA.2009.4982790\">10.1109/CICA.2009.4982790</a>","ieee":"B. Klöpper, C. Sondermann-Wölke, C. Romaus, and H. Vöcking, “Probabilistic planning integrated in a multi-level dependability concept for mechatronic systems,” in <i>Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium on</i>, 2009, pp. 104–111.","apa":"Klöpper, B., Sondermann-Wölke, C., Romaus, C., &#38; Vöcking, H. (2009). Probabilistic planning integrated in a multi-level dependability concept for mechatronic systems. In <i>Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium on</i> (pp. 104–111). <a href=\"https://doi.org/10.1109/CICA.2009.4982790\">https://doi.org/10.1109/CICA.2009.4982790</a>","chicago":"Klöpper, Benjamin, Christoph Sondermann-Wölke, Christoph Romaus, and Henner Vöcking. “Probabilistic Planning Integrated in a Multi-Level Dependability Concept for Mechatronic Systems.” In <i>Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium On</i>, 104–11, 2009. <a href=\"https://doi.org/10.1109/CICA.2009.4982790\">https://doi.org/10.1109/CICA.2009.4982790</a>.","short":"B. Klöpper, C. Sondermann-Wölke, C. Romaus, H. Vöcking, in: Computational Intelligence in Control and Automation, 2009. CICA 2009. IEEE Symposium On, 2009, pp. 104–111."},"doi":"10.1109/CICA.2009.4982790","user_id":"55222","page":"104 -111","language":[{"iso":"eng"}],"_id":"9736","date_updated":"2022-01-06T07:04:19Z","title":"Probabilistic planning integrated in a multi-level dependability concept for mechatronic systems","year":"2009","status":"public","author":[{"first_name":"Benjamin","last_name":"Klöpper","full_name":"Klöpper, Benjamin"},{"last_name":"Sondermann-Wölke","first_name":"Christoph","full_name":"Sondermann-Wölke, Christoph"},{"full_name":"Romaus, Christoph","last_name":"Romaus","first_name":"Christoph"},{"first_name":"Henner","last_name":"Vöcking","full_name":"Vöcking, Henner"}]},{"date_updated":"2022-01-06T07:04:19Z","author":[{"full_name":"Sondermann-Wölke, Christoph","first_name":"Christoph","last_name":"Sondermann-Wölke"},{"full_name":"Sextro, Walter","first_name":"Walter","last_name":"Sextro","id":"21220"}],"year":"2009","status":"public","title":"Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules","user_id":"55222","doi":"10.1109/ComputationWorld.2009.47","_id":"9742","language":[{"iso":"eng"}],"page":"15 -20","abstract":[{"lang":"eng","text":"New mechatronic systems, called self-optimizing systems, are able to adapt their behavior according to environmental, user and system specific influences. Self-optimizing systems are complex and due to their non-deterministic behavior comprise hidden risks, which cannot be foreseen in the design phase of the system. Therefore, this paper presents modifications of the current condition monitoring policy, to be able to cope with this new kind of systems. Beside avoiding critical situations evoked by self-optimization, the proposed concept uses self-optimization to increase the dependability of the system. In this case, the concept is applied to the active guidance module of an innovative rail-bound vehicle."}],"citation":{"ama":"Sondermann-Wölke C, Sextro W. Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules. In: <i>Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:</i> ; 2009:15-20. doi:<a href=\"https://doi.org/10.1109/ComputationWorld.2009.47\">10.1109/ComputationWorld.2009.47</a>","bibtex":"@inproceedings{Sondermann-Wölke_Sextro_2009, title={Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules}, DOI={<a href=\"https://doi.org/10.1109/ComputationWorld.2009.47\">10.1109/ComputationWorld.2009.47</a>}, booktitle={Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:}, author={Sondermann-Wölke, Christoph and Sextro, Walter}, year={2009}, pages={15–20} }","mla":"Sondermann-Wölke, Christoph, and Walter Sextro. “Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules.” <i>Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:</i>, 2009, pp. 15–20, doi:<a href=\"https://doi.org/10.1109/ComputationWorld.2009.47\">10.1109/ComputationWorld.2009.47</a>.","chicago":"Sondermann-Wölke, Christoph, and Walter Sextro. “Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules.” In <i>Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:</i>, 15–20, 2009. <a href=\"https://doi.org/10.1109/ComputationWorld.2009.47\">https://doi.org/10.1109/ComputationWorld.2009.47</a>.","short":"C. Sondermann-Wölke, W. Sextro, in: Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:, 2009, pp. 15–20.","apa":"Sondermann-Wölke, C., &#38; Sextro, W. (2009). Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules. In <i>Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:</i> (pp. 15–20). <a href=\"https://doi.org/10.1109/ComputationWorld.2009.47\">https://doi.org/10.1109/ComputationWorld.2009.47</a>","ieee":"C. Sondermann-Wölke and W. Sextro, “Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules,” in <i>Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:</i>, 2009, pp. 15–20."},"publication":"Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD '09. Computation World:","department":[{"_id":"151"}],"type":"conference","keyword":["condition monitoring","mechatronic systems","rail bound vehicle","rail guidance module","self-optimization","self-optimizing function modules","condition monitoring","mechatronics","railway rolling stock","self-adjusting systems"],"date_created":"2019-05-13T09:31:52Z"},{"date_created":"2019-07-12T05:28:37Z","type":"conference","keyword":["acoustic sensing tasks","array geometry","calibration","coherence analysis","hierarchical procedure","local shape calibration","microphone array networks","microphone arrays","network calibration method","sensor arrays","SRP-PHAT","unsupervised shape calibration"],"department":[{"_id":"54"}],"oa":"1","publication":"IEEE/SP 15th Workshop on Statistical Signal Processing (SSP 2009)","citation":{"chicago":"Hennecke, Marius, Thomas Ploetz, Gernot A. Fink, Joerg Schmalenstroeer, and Reinhold Haeb-Umbach. “A Hierarchical Approach to Unsupervised Shape Calibration of Microphone Array Networks.” In <i>IEEE/SP 15th Workshop on Statistical Signal Processing (SSP 2009)</i>, 257–60, 2009. <a href=\"https://doi.org/10.1109/SSP.2009.5278589\">https://doi.org/10.1109/SSP.2009.5278589</a>.","short":"M. Hennecke, T. Ploetz, G.A. Fink, J. Schmalenstroeer, R. Haeb-Umbach, in: IEEE/SP 15th Workshop on Statistical Signal Processing (SSP 2009), 2009, pp. 257–260.","ieee":"M. Hennecke, T. Ploetz, G. A. Fink, J. Schmalenstroeer, and R. Haeb-Umbach, “A hierarchical approach to unsupervised shape calibration of microphone array networks,” in <i>IEEE/SP 15th Workshop on Statistical Signal Processing (SSP 2009)</i>, 2009, pp. 257–260, doi: <a href=\"https://doi.org/10.1109/SSP.2009.5278589\">10.1109/SSP.2009.5278589</a>.","apa":"Hennecke, M., Ploetz, T., Fink, G. A., Schmalenstroeer, J., &#38; Haeb-Umbach, R. (2009). A hierarchical approach to unsupervised shape calibration of microphone array networks. <i>IEEE/SP 15th Workshop on Statistical Signal Processing (SSP 2009)</i>, 257–260. <a href=\"https://doi.org/10.1109/SSP.2009.5278589\">https://doi.org/10.1109/SSP.2009.5278589</a>","bibtex":"@inproceedings{Hennecke_Ploetz_Fink_Schmalenstroeer_Haeb-Umbach_2009, title={A hierarchical approach to unsupervised shape calibration of microphone array networks}, DOI={<a href=\"https://doi.org/10.1109/SSP.2009.5278589\">10.1109/SSP.2009.5278589</a>}, booktitle={IEEE/SP 15th Workshop on Statistical Signal Processing (SSP 2009)}, author={Hennecke, Marius and Ploetz, Thomas and Fink, Gernot A. and Schmalenstroeer, Joerg and Haeb-Umbach, Reinhold}, year={2009}, pages={257–260} }","ama":"Hennecke M, Ploetz T, Fink GA, Schmalenstroeer J, Haeb-Umbach R. A hierarchical approach to unsupervised shape calibration of microphone array networks. In: <i>IEEE/SP 15th Workshop on Statistical Signal Processing (SSP 2009)</i>. ; 2009:257-260. doi:<a href=\"https://doi.org/10.1109/SSP.2009.5278589\">10.1109/SSP.2009.5278589</a>","mla":"Hennecke, Marius, et al. “A Hierarchical Approach to Unsupervised Shape Calibration of Microphone Array Networks.” <i>IEEE/SP 15th Workshop on Statistical Signal Processing (SSP 2009)</i>, 2009, pp. 257–60, doi:<a href=\"https://doi.org/10.1109/SSP.2009.5278589\">10.1109/SSP.2009.5278589</a>."},"quality_controlled":"1","abstract":[{"lang":"eng","text":"Microphone arrays represent the basis for many challenging acoustic sensing tasks. The accuracy of techniques like beamforming directly depends on a precise knowledge of the relative positions of the sensors used. Unfortunately, for certain use cases manually measuring the geometry of an array is not feasible due to practical constraints. In this paper we present an approach to unsupervised shape calibration of microphone array networks. We developed a hierarchical procedure that first performs local shape calibration based on coherence analysis and then employs SRP-PHAT in a network calibration method. Practical experiments demonstrate the effectiveness of our approach especially for highly reverberant acoustic environments."}],"page":"257-260","main_file_link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/2009/HePlFiScHa09.pdf","open_access":"1"}],"_id":"11806","language":[{"iso":"eng"}],"user_id":"460","doi":"10.1109/SSP.2009.5278589","status":"public","year":"2009","title":"A hierarchical approach to unsupervised shape calibration of microphone array networks","author":[{"last_name":"Hennecke","first_name":"Marius","full_name":"Hennecke, Marius"},{"full_name":"Ploetz, Thomas","last_name":"Ploetz","first_name":"Thomas"},{"first_name":"Gernot A.","last_name":"Fink","full_name":"Fink, Gernot A."},{"first_name":"Joerg","last_name":"Schmalenstroeer","full_name":"Schmalenstroeer, Joerg","id":"460"},{"full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach","first_name":"Reinhold","id":"242"}],"date_updated":"2023-10-26T08:09:22Z"},{"user_id":"55222","doi":"10.1109/FREQ.2008.4622963","page":"91-94","_id":"9576","language":[{"iso":"eng"}],"date_updated":"2022-01-06T07:04:16Z","status":"public","title":"Development of a biomedical tissue differentiation system using piezoelectric actuators","year":"2008","author":[{"full_name":"Uribe, David Oliva","last_name":"Uribe","first_name":"David Oliva"},{"first_name":"Ralf","last_name":"Stroop","full_name":"Stroop, Ralf"},{"id":"210","first_name":"Tobias","last_name":"Hemsel","full_name":"Hemsel, Tobias"},{"first_name":"Jörg","last_name":"Wallaschek","full_name":"Wallaschek, Jörg"}],"publication_identifier":{"issn":["1075-6787"]},"type":"conference","keyword":["biomedical measurement","brain","cancer","neurophysiology","phantoms","phase locked loops","piezoelectric actuators","surgery","tactile sensors","transfer functions","tumours","PLL","biomedical tissue differentiation system","brain tumor resection","frequency control","frequency shift","gel-phantom","high sensitivity actuator-sensor system","neurosurgery","phase-locked loop","piezoelectric actuators","piezoelectric bimorph","self-oscillating circuit","sensor sensitivity","tactile differentiation","tactile sensor system","transfer function","tumor boundary","visual differentiation","Biomedical measurements","Circuits","Frequency control","Neoplasms","Neurosurgery","Phase locked loops","Piezoelectric actuators","Surges","Transfer functions","Voltage"],"department":[{"_id":"151"}],"date_created":"2019-04-29T13:07:39Z","quality_controlled":"1","abstract":[{"lang":"eng","text":"In neurosurgery, delineation of tumor boundaries during resection of brain tumors is of substantial relevance. During operation distinction between tumor and healthy tissue rely on the abilities of the surgeon based on visual and tactile differentiation. In this paper a high sensitivity actuator-sensor system using a piezoelectric bimorph is presented. Frequency shift and transfer function of the bimorphpsilas voltages are detected and evaluated. Sensorpsilas sensitivity is evaluated using two frequency controls strategies: A phase-locked loop (PLL) and a self-oscillating circuit. Results of measurements conducted on gel-phantoms are presented and discussed."}],"publication":"Frequency Control Symposium, 2008 IEEE International","citation":{"mla":"Uribe, David Oliva, et al. “Development of a Biomedical Tissue Differentiation System Using Piezoelectric Actuators.” <i>Frequency Control Symposium, 2008 IEEE International</i>, 2008, pp. 91–94, doi:<a href=\"https://doi.org/10.1109/FREQ.2008.4622963\">10.1109/FREQ.2008.4622963</a>.","bibtex":"@inproceedings{Uribe_Stroop_Hemsel_Wallaschek_2008, title={Development of a biomedical tissue differentiation system using piezoelectric actuators}, DOI={<a href=\"https://doi.org/10.1109/FREQ.2008.4622963\">10.1109/FREQ.2008.4622963</a>}, booktitle={Frequency Control Symposium, 2008 IEEE International}, author={Uribe, David Oliva and Stroop, Ralf and Hemsel, Tobias and Wallaschek, Jörg}, year={2008}, pages={91–94} }","ama":"Uribe DO, Stroop R, Hemsel T, Wallaschek J. Development of a biomedical tissue differentiation system using piezoelectric actuators. In: <i>Frequency Control Symposium, 2008 IEEE International</i>. ; 2008:91-94. doi:<a href=\"https://doi.org/10.1109/FREQ.2008.4622963\">10.1109/FREQ.2008.4622963</a>","ieee":"D. O. Uribe, R. Stroop, T. Hemsel, and J. Wallaschek, “Development of a biomedical tissue differentiation system using piezoelectric actuators,” in <i>Frequency Control Symposium, 2008 IEEE International</i>, 2008, pp. 91–94.","apa":"Uribe, D. O., Stroop, R., Hemsel, T., &#38; Wallaschek, J. (2008). Development of a biomedical tissue differentiation system using piezoelectric actuators. In <i>Frequency Control Symposium, 2008 IEEE International</i> (pp. 91–94). <a href=\"https://doi.org/10.1109/FREQ.2008.4622963\">https://doi.org/10.1109/FREQ.2008.4622963</a>","chicago":"Uribe, David Oliva, Ralf Stroop, Tobias Hemsel, and Jörg Wallaschek. “Development of a Biomedical Tissue Differentiation System Using Piezoelectric Actuators.” In <i>Frequency Control Symposium, 2008 IEEE International</i>, 91–94, 2008. <a href=\"https://doi.org/10.1109/FREQ.2008.4622963\">https://doi.org/10.1109/FREQ.2008.4622963</a>.","short":"D.O. Uribe, R. Stroop, T. Hemsel, J. Wallaschek, in: Frequency Control Symposium, 2008 IEEE International, 2008, pp. 91–94."}},{"user_id":"5786","_id":"39078","language":[{"iso":"eng"}],"date_updated":"2023-01-24T09:12:40Z","status":"public","year":"2004","title":"Virtual Prototyping Of Self-Optimizing Mechatronic Systems","conference":{"name":"8th International Design Conference ","location":"Dubrovnik"},"author":[{"id":"163","last_name":"Gausemeier","first_name":"Jürgen","full_name":"Gausemeier, Jürgen"},{"id":"16243","first_name":"Wolfgang","last_name":"Müller","full_name":"Müller, Wolfgang"},{"last_name":"Paelke","first_name":"Volker","full_name":"Paelke, Volker"},{"first_name":"Jürgen","last_name":"Bauch","full_name":"Bauch, Jürgen"},{"first_name":"Q.","last_name":"Shen","full_name":"Shen, Q."},{"last_name":"Radkowski","first_name":"R. ","full_name":"Radkowski, R. "}],"keyword":["mechatronic systems","self-optimization","virtual prototyping"],"type":"conference","department":[{"_id":"672"}],"place":"Dubrovnik","date_created":"2023-01-24T09:12:31Z","publication":"Proceedings of the Design 2004","citation":{"short":"J. Gausemeier, W. Müller, V. Paelke, J. Bauch, Q. Shen, R. Radkowski, in: Proceedings of the Design 2004, Dubrovnik, 2004.","chicago":"Gausemeier, Jürgen, Wolfgang Müller, Volker Paelke, Jürgen Bauch, Q. Shen, and R.  Radkowski. “Virtual Prototyping Of Self-Optimizing Mechatronic Systems.” In <i>Proceedings of the Design 2004</i>. Dubrovnik, 2004.","ieee":"J. Gausemeier, W. Müller, V. Paelke, J. Bauch, Q. Shen, and R. Radkowski, “Virtual Prototyping Of Self-Optimizing Mechatronic Systems,” presented at the 8th International Design Conference , Dubrovnik, 2004.","apa":"Gausemeier, J., Müller, W., Paelke, V., Bauch, J., Shen, Q., &#38; Radkowski, R. (2004). Virtual Prototyping Of Self-Optimizing Mechatronic Systems. <i>Proceedings of the Design 2004</i>. 8th International Design Conference , Dubrovnik.","bibtex":"@inproceedings{Gausemeier_Müller_Paelke_Bauch_Shen_Radkowski_2004, place={Dubrovnik}, title={Virtual Prototyping Of Self-Optimizing Mechatronic Systems}, booktitle={Proceedings of the Design 2004}, author={Gausemeier, Jürgen and Müller, Wolfgang and Paelke, Volker and Bauch, Jürgen and Shen, Q. and Radkowski, R. }, year={2004} }","ama":"Gausemeier J, Müller W, Paelke V, Bauch J, Shen Q, Radkowski R. Virtual Prototyping Of Self-Optimizing Mechatronic Systems. In: <i>Proceedings of the Design 2004</i>. ; 2004.","mla":"Gausemeier, Jürgen, et al. “Virtual Prototyping Of Self-Optimizing Mechatronic Systems.” <i>Proceedings of the Design 2004</i>, 2004."}}]