--- _id: '52823' abstract: - lang: eng text: "The involvement of human workers is an essential part of the design of production systems. In this\r\ncontext, test scenarios in Virtual Reality are increasingly used to verify the fulfillment of requirements.\r\nThis paper proposes a procedure for generating virtual test scenarios. The objective is to support human-\r\ncentered design by means of virtual measurement systems. The procedure involves three steps:\r\nselecting relevant human factors in requirements, modeling the virtual test scenario, and carrying out\r\nthe verification study. The goal is to advance the significance of testing outputs." author: - first_name: Iris full_name: Gräßler, Iris id: '47565' last_name: Gräßler orcid: 0000-0001-5765-971X - first_name: Daniel full_name: Roesmann, Daniel id: '54680' last_name: Roesmann - first_name: Marc full_name: Unverzagt, Marc id: '55785' last_name: Unverzagt - first_name: Jens full_name: Pottebaum, Jens id: '405' last_name: Pottebaum orcid: http://orcid.org/0000-0001-8778-2989 citation: ama: 'Gräßler I, Roesmann D, Unverzagt M, Pottebaum J. Virtual Test Scenarios for Human-Centered Design with Virtual Measurement Systems. In: Poster. AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany; 2023:416-417. doi:10.5162/smsi2023/p70' apa: Gräßler, I., Roesmann, D., Unverzagt, M., & Pottebaum, J. (2023). Virtual Test Scenarios for Human-Centered Design with Virtual Measurement Systems. Poster, 416–417. https://doi.org/10.5162/smsi2023/p70 bibtex: '@inproceedings{Gräßler_Roesmann_Unverzagt_Pottebaum_2023, title={Virtual Test Scenarios for Human-Centered Design with Virtual Measurement Systems}, DOI={10.5162/smsi2023/p70}, booktitle={Poster}, publisher={AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany}, author={Gräßler, Iris and Roesmann, Daniel and Unverzagt, Marc and Pottebaum, Jens}, year={2023}, pages={416–417} }' chicago: Gräßler, Iris, Daniel Roesmann, Marc Unverzagt, and Jens Pottebaum. “Virtual Test Scenarios for Human-Centered Design with Virtual Measurement Systems.” In Poster, 416–17. AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany, 2023. https://doi.org/10.5162/smsi2023/p70. ieee: 'I. Gräßler, D. Roesmann, M. Unverzagt, and J. Pottebaum, “Virtual Test Scenarios for Human-Centered Design with Virtual Measurement Systems,” in Poster, Nuremberg, 2023, pp. 416–417, doi: 10.5162/smsi2023/p70.' mla: Gräßler, Iris, et al. “Virtual Test Scenarios for Human-Centered Design with Virtual Measurement Systems.” Poster, AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany, 2023, pp. 416–17, doi:10.5162/smsi2023/p70. short: 'I. Gräßler, D. Roesmann, M. Unverzagt, J. Pottebaum, in: Poster, AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany, 2023, pp. 416–417.' conference: end_date: 2023-05-11 location: Nuremberg name: SMSI 2023. Sensor and Measurement Science International start_date: 2023-05-08 date_created: 2024-03-25T10:22:45Z date_updated: 2024-03-25T10:59:26Z department: - _id: '152' doi: 10.5162/smsi2023/p70 keyword: - virtual reality - virtual measurement systems - virtual test scenario - human-centered design language: - iso: eng page: 416-417 publication: Poster publication_status: published publisher: AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany quality_controlled: '1' status: public title: Virtual Test Scenarios for Human-Centered Design with Virtual Measurement Systems type: conference user_id: '5905' year: '2023' ... --- _id: '35136' abstract: - lang: ger text: "Im Zentrum dieses Beitrags stehen Ergebnisse der Messung pädagogischer Kompetenzen Studierender der Theologie, die das Praxissemester in Deutschland absolviert haben. Das bildungswissenschaftliche Wissen, Kompetenzselbsteinschätzungen und ihre Entwicklung sowie die Einschätzung der im Praxissemester erreichten Ziele Studierender werden dabei unter Berücksichtigung der Ausrichtung des Lehramtsstudiums auf eine Schulform betrachtet. Um die Ergebnisse der Messung bildungswissenschaftlichen Wissens und die der Messung von Kompetenzselbsteinschätzungen zu kontextualisieren (N = 304), wird zuerst die Relevanz des (bildungswissenschaftlichen) Wissens als Ausgangspunkt des Könnens herausgearbeitet. Daran anschließend werden Befunde zur schulformspezifischen Professionalisierung resümiert. Anschließend werden Hypothesen hergeleitet, die Anlage der Studie sowie die Testinstrumente vorge- stellt, die Ergebnisse präsentiert und diskutiert. Die Ergebnisse zeigen wider Erwarten, dass sich weder das bildungswissenschaftliche Wissen, die Kompetenzselbsteinschätzungen und ihre Entwicklung noch die Einschätzung der im Praxissemester erreichten Ziele angehender Lehrkräfte in Abhängigkeit der Schulformen unterscheiden. Die Diskussion bezieht sich u.a. auf die Struktur der Lehramtsstudiengänge, die Denkfiguren zur Entwicklung von Können und die Konzeption der Messinstrumente.\r\n" - lang: eng text: "The focus of this article are the results of the measurement of pedagogical competencies of students of theology who have completed an internship in Germany. The educational knowledge, competence self-assessments and their development as well as the assessment of the goals achieved by students in the internship are considered, taking into account the orientation of the teacher education course towards a school type. In order to contextualize the results of the measurement of educational knowledge and those of the survey of competence self-assessments (N = 304), ideas are shown how the relationship between knowledge and ability is constituted and findings on the type of school-specific professionalization are summarized. Subsequently, hypotheses are derived, the design of the study, the method and the test instruments are described, the results are presented and discussed. Contrary to expectations, the results show that neither the educational science knowledge, the competence self-assessments and their development nor the assessment of the goals achieved in the internship by pros- pective teachers differ depending on the type of school. The discussion relates to on the structure of the teacher training courses, the mental figures for the development of skills and the conception of the measuring instruments.\r\n" alternative_title: - Ergebnisse der Messung pädagogischer Kompetenzen Studierender in Deutschland author: - first_name: Carina full_name: Caruso, Carina id: '23123' last_name: Caruso - first_name: Andreas full_name: Seifert, Andreas last_name: Seifert citation: ama: Caruso C, Seifert A. Inwiefern ist die Professionalisierung in Praxisphasen schulformspezifisch? Österreichische Religionspädagogische Forum. 2022;30(1):239-260. doi:10.30:2022.1.14 apa: Caruso, C., & Seifert, A. (2022). Inwiefern ist die Professionalisierung in Praxisphasen schulformspezifisch? Österreichische Religionspädagogische Forum, 30(1), 239–260. https://doi.org/10.30:2022.1.14 bibtex: '@article{Caruso_Seifert_2022, title={ Inwiefern ist die Professionalisierung in Praxisphasen schulformspezifisch?}, volume={30}, DOI={10.30:2022.1.14}, number={1}, journal={Österreichische Religionspädagogische Forum}, publisher={Universitätsbibliothek Graz}, author={Caruso, Carina and Seifert, Andreas}, year={2022}, pages={239–260} }' chicago: 'Caruso, Carina, and Andreas Seifert. “ Inwiefern ist die Professionalisierung in Praxisphasen schulformspezifisch?” Österreichische Religionspädagogische Forum 30, no. 1 (2022): 239–60. https://doi.org/10.30:2022.1.14.' ieee: 'C. Caruso and A. Seifert, “ Inwiefern ist die Professionalisierung in Praxisphasen schulformspezifisch?,” Österreichische Religionspädagogische Forum, vol. 30, no. 1, pp. 239–260, 2022, doi: 10.30:2022.1.14.' mla: Caruso, Carina, and Andreas Seifert. “ Inwiefern ist die Professionalisierung in Praxisphasen schulformspezifisch?” Österreichische Religionspädagogische Forum, vol. 30, no. 1, Universitätsbibliothek Graz, 2022, pp. 239–60, doi:10.30:2022.1.14. short: C. Caruso, A. Seifert, Österreichische Religionspädagogische Forum 30 (2022) 239–260. date_created: 2023-01-03T12:41:20Z date_updated: 2023-01-06T12:08:14Z doi: 10.30:2022.1.14 intvolume: ' 30' issue: '1' keyword: - Bildungswissenschaftliches Wissen - Kompetenzmessung - Kompetenzselbsteinschätzung - Praxissemester - Professionalisierung / competence measurement - competence self-assessment - educational knowledge - internship - professionalization language: - iso: ger page: 239-260 publication: Österreichische Religionspädagogische Forum publication_identifier: issn: - 1018-1539 publication_status: published publisher: Universitätsbibliothek Graz status: public title: ' Inwiefern ist die Professionalisierung in Praxisphasen schulformspezifisch?' type: journal_article user_id: '86519' volume: 30 year: '2022' ... --- _id: '35137' abstract: - lang: ger text: Im Zentrum dieses Beitrags stehen Ergebnisse der Messung pädagogischer Kompetenzen Studierender. Dabei werden sowohl das bildungswissenschaftliche Wissen als auch die Entwicklung der Kompe­tenzselbsteinschätzungen in den Bereichen Unterrichten, Erziehen, Beurteilen und Innovieren unter Berücksichtigung individueller Voraussetzungen (Alter, Geschlecht, Abiturnote, Bachelornote, Konfession) betrachtet. Um die Ergeb­nisse hinsichtlich ihrer Bedeutung für die Professionalisierung angehender Lehrkräfte diskutieren zu können, wird, den empirischen Erkenntnissen voranstehend, die Bedeutung von Wissen für berufliches Können herausgearbeitet. Daran anschließend werden Hypothesen hergeleitet, die Anlage der Studie sowie die Testinstrumente vorgestellt, die Ergebnisse präsentiert und diskutiert. Die Ergebnisse zeigen, dass die Abitur- und Bachelornote die Varianz hinsichtlich des pädagogischen Wissens aufklären, sich eine signifikante Entwicklung der Kompetenzselbsteinschätzungen angehender Lehrkräfte feststellen lässt, aber sich angehende Religionslehrkräfte kaum von anderen Studierenden unterscheiden. Die Diskussion nimmt u. a. Rückbezug auf die Denkfiguren zur Entwicklung berufli­chen Könnens und benennt Limitationen, die mit der Studie und Kompetenzmessungen verbunden sind. Daran schließt die Formulierung eines Ausblicks an. Der Beitrag zielt insbesondere darauf, repräsentative Ergebnisse der Kompetenzmessung zu präsentieren und dabei potenzielle Einflussfaktoren auf die studentische Kompetenzent­wicklung zu beleuchten. Ein dadurch angereichertes Konglomerat belastbarer Erkenntnisse zielt darauf, langfristig zur Ableitung lehrerbildungsdidaktischer Überlegungen herangezogen werden zu können, die die studentische Professionalisierung unterstützen. - lang: eng text: 'This paper focuses on the results of the measurement of pedagogical competences of students. In doing so, both the knowledge of the educational sciences and the development of competence self-assessments in the fields of teaching, education, assessment andinnovating are taken into account. The study makes use of the following individual requirements: age, sex, Abitur grade, Bachelor grade, Confession. In order to be able to discuss the re-sults regarding their importance for the professionalization of prospective teachers, the importance of knowledge for professional skills is highlighted, preceded by empirical findings. Subsequently, hypotheses are derived, the plan of the study as well as the test instruments are presented, the results presented and discussed. The results show that the Abitur and Bachelor grades clarify the variance in pedagogical knowledge, that there is a significant development in the competence self-assessments of prospective teachers, and that prospective religious teachers are not different from other students. The discussion takes into account, among other things, the ideas for the devel-opment of professional skills and identifies limitations associated with the study. This is followed by the formula-tion of an outlook. The main aim of the paper is to present representative results of the competence measurement and to examine potential influencing factors on student competence development. A conglomerate of resilient knowledge enriched by this aims to be used in the long term to derive teacher training didactic considerations that support student professionalization.' author: - first_name: Carina full_name: Caruso, Carina id: '23123' last_name: Caruso - first_name: Andreas full_name: Seifert, Andreas last_name: Seifert citation: ama: Caruso C, Seifert A. Pädagogische Kompetenz als Ausgangspunkt beruflichen Könnens!? Ergebnisse der Kompetenzmessung angehender Lehrkräfte unter Berücksichtigung individueller Voraussetzungen. Religionspädagogische Beiträge Journal for Religion in Education . 2022;45(1):3-15. doi:10.20377/rpb-101 apa: Caruso, C., & Seifert, A. (2022). Pädagogische Kompetenz als Ausgangspunkt beruflichen Könnens!? Ergebnisse der Kompetenzmessung angehender Lehrkräfte unter Berücksichtigung individueller Voraussetzungen. Religionspädagogische Beiträge. Journal for Religion in Education , 45(1), 3–15. https://doi.org/10.20377/rpb-101 bibtex: '@article{Caruso_Seifert_2022, title={Pädagogische Kompetenz als Ausgangspunkt beruflichen Könnens!? Ergebnisse der Kompetenzmessung angehender Lehrkräfte unter Berücksichtigung individueller Voraussetzungen}, volume={45}, DOI={10.20377/rpb-101}, number={1}, journal={Religionspädagogische Beiträge. Journal for Religion in Education }, publisher={University of Bamberg Press}, author={Caruso, Carina and Seifert, Andreas}, year={2022}, pages={3–15} }' chicago: 'Caruso, Carina, and Andreas Seifert. “Pädagogische Kompetenz als Ausgangspunkt beruflichen Könnens!? Ergebnisse der Kompetenzmessung angehender Lehrkräfte unter Berücksichtigung individueller Voraussetzungen.” Religionspädagogische Beiträge. Journal for Religion in Education 45, no. 1 (2022): 3–15. https://doi.org/10.20377/rpb-101.' ieee: 'C. Caruso and A. Seifert, “Pädagogische Kompetenz als Ausgangspunkt beruflichen Könnens!? Ergebnisse der Kompetenzmessung angehender Lehrkräfte unter Berücksichtigung individueller Voraussetzungen,” Religionspädagogische Beiträge. Journal for Religion in Education , vol. 45, no. 1, pp. 3–15, 2022, doi: 10.20377/rpb-101.' mla: Caruso, Carina, and Andreas Seifert. “Pädagogische Kompetenz als Ausgangspunkt beruflichen Könnens!? Ergebnisse der Kompetenzmessung angehender Lehrkräfte unter Berücksichtigung individueller Voraussetzungen.” Religionspädagogische Beiträge. Journal for Religion in Education , vol. 45, no. 1, University of Bamberg Press, 2022, pp. 3–15, doi:10.20377/rpb-101. short: C. Caruso, A. Seifert, Religionspädagogische Beiträge. Journal for Religion in Education 45 (2022) 3–15. date_created: 2023-01-03T12:45:09Z date_updated: 2023-01-06T12:21:07Z doi: 10.20377/rpb-101 intvolume: ' 45' issue: '1' keyword: - Bildungswissenschaftliches Wissen - Kompetenzmessung - Kompetenzselbsteinschätzung - Praxissemester - Professionalisierung / competence measurement - competence self-assessment - educational knowledge - internship - professionalization language: - iso: ger page: 3-15 publication: 'Religionspädagogische Beiträge. Journal for Religion in Education ' publication_identifier: issn: - 2750 - 3941 publication_status: published publisher: University of Bamberg Press status: public title: Pädagogische Kompetenz als Ausgangspunkt beruflichen Könnens!? Ergebnisse der Kompetenzmessung angehender Lehrkräfte unter Berücksichtigung individueller Voraussetzungen type: journal_article user_id: '86519' volume: 45 year: '2022' ... --- _id: '34820' abstract: - lang: eng text: The construct of noticing is considered to be of crucial importance for professional action of (prospective) physical education (PE) teachers in the context of (inclusive) PE. In order to implement the demands of inclusive PE teaching, noticingwith regard to processes of recognition proves to be particularly significant. Due to the relevance of physicality, the design of recognition relationships that encourage pupils' development results in specific requirements for the selective attention and the theory-based interpretation of processes of recognition and disregard in complex teaching situations. This facet of competence has hardly been studied so far, partly due to the lack of instruments for standardised assessment of this construct. In the context of this paper, the development and validation of a standardised, video vignette-based test instrument for the measurement of noticingwith regard to processes of recognition of prospective PE teachers is presented. The validation focuses on the content of the test and the internal structure of the instrument as well as on correlations with related constructs in terms of content. The results from three consecutive validation studies provide indications of the reliability and validity of the test score interpretation of the instrument ViProQiS_A. The findings so far indicate that the standardised measurement of noticingwith regard to processes of recognitionin inclusive PE could be realized on the basis of the test instrument developed here. article_type: original author: - first_name: Wiebke full_name: Langer, Wiebke last_name: Langer - first_name: Julia full_name: Bruns, Julia id: '72183' last_name: Bruns orcid: https://orcid.org/0000-0002-6604-5864 - first_name: Jan full_name: Erhorn, Jan last_name: Erhorn citation: ama: Langer W, Bruns J, Erhorn J. Development and validation of a video-based test instrument to measure noticing with regard to processes ofrecognition in inclusive physical education. German Journal of Exercise and Sport Research. 2022;52(3):386-397. doi:10.1007/s12662-022-00807-0 apa: Langer, W., Bruns, J., & Erhorn, J. (2022). Development and validation of a video-based test instrument to measure noticing with regard to processes ofrecognition in inclusive physical education. German Journal of Exercise and Sport Research, 52(3), 386–397. https://doi.org/10.1007/s12662-022-00807-0 bibtex: '@article{Langer_Bruns_Erhorn_2022, title={Development and validation of a video-based test instrument to measure noticing with regard to processes ofrecognition in inclusive physical education}, volume={52}, DOI={10.1007/s12662-022-00807-0}, number={3}, journal={German Journal of Exercise and Sport Research}, publisher={Springer}, author={Langer, Wiebke and Bruns, Julia and Erhorn, Jan}, year={2022}, pages={386–397} }' chicago: 'Langer, Wiebke, Julia Bruns, and Jan Erhorn. “Development and Validation of a Video-Based Test Instrument to Measure Noticing with Regard to Processes Ofrecognition in Inclusive Physical Education.” German Journal of Exercise and Sport Research 52, no. 3 (2022): 386–97. https://doi.org/10.1007/s12662-022-00807-0.' ieee: 'W. Langer, J. Bruns, and J. Erhorn, “Development and validation of a video-based test instrument to measure noticing with regard to processes ofrecognition in inclusive physical education,” German Journal of Exercise and Sport Research, vol. 52, no. 3, pp. 386–397, 2022, doi: 10.1007/s12662-022-00807-0.' mla: Langer, Wiebke, et al. “Development and Validation of a Video-Based Test Instrument to Measure Noticing with Regard to Processes Ofrecognition in Inclusive Physical Education.” German Journal of Exercise and Sport Research, vol. 52, no. 3, Springer, 2022, pp. 386–97, doi:10.1007/s12662-022-00807-0. short: W. Langer, J. Bruns, J. Erhorn, German Journal of Exercise and Sport Research 52 (2022) 386–397. date_created: 2022-12-22T09:22:45Z date_updated: 2023-06-20T19:10:42Z department: - _id: '97' - _id: '611' doi: 10.1007/s12662-022-00807-0 external_id: isi: - '000788945100004' intvolume: ' 52' isi: '1' issue: '3' keyword: - Physical education teacher education - Competence modelling and - measurement - Inclusive physical education - Video-based items - Noticing language: - iso: eng page: 386-397 publication: German Journal of Exercise and Sport Research publication_identifier: eissn: - 2509-3150 issn: - 2509-3142 publication_status: published publisher: Springer quality_controlled: '1' status: public title: Development and validation of a video-based test instrument to measure noticing with regard to processes ofrecognition in inclusive physical education type: journal_article user_id: '49063' volume: 52 year: '2022' ... --- _id: '25476' abstract: - lang: eng text: This study deals with the damage behavior of metallic materials by the application of different manufacturing processes and using different optical measurement methods to identify the crack initiation in the damage specimen. The study is intended to highlight the importance of considering manufacturing processes and optical measurement methods in a numerical simulation when analyzing the damage behavior of metallic materials. To describe the damage behavior of the material in the process chain simulations, it is important to calibrate the parameters of damage model more accurately. These parameters are determined using experimental investigation of desired damage specimens. In this regard, a selected damage specimen manufactured by different cutting processes is first experimentally and then numerically investigated. It is shown that the manufacturing process and the optical measurement methods influence the stress state analyzed in the numerical simulation. article_type: original author: - first_name: Mortaza full_name: Otroshi, Mortaza id: '71269' last_name: Otroshi orcid: 0000-0002-8652-9209 - first_name: Gerson full_name: Meschut, Gerson id: '32056' last_name: Meschut orcid: 0000-0002-2763-1246 - first_name: Aathavan full_name: Nesakumar, Aathavan last_name: Nesakumar citation: ama: Otroshi M, Meschut G, Nesakumar A. The influence of manufacturing processes and optical measurement methods on the damage behavior of HX340LAD micro-alloyed steels. Journal of Manufacturing Engineering. 2021;16(3):70-76. doi:https://doi.org/10.37255/jme.v16i3pp070-076 apa: Otroshi, M., Meschut, G., & Nesakumar, A. (2021). The influence of manufacturing processes and optical measurement methods on the damage behavior of HX340LAD micro-alloyed steels. Journal of Manufacturing Engineering, 16(3), 70–76. https://doi.org/10.37255/jme.v16i3pp070-076 bibtex: '@article{Otroshi_Meschut_Nesakumar_2021, title={The influence of manufacturing processes and optical measurement methods on the damage behavior of HX340LAD micro-alloyed steels}, volume={16}, DOI={https://doi.org/10.37255/jme.v16i3pp070-076}, number={3}, journal={Journal of Manufacturing Engineering}, author={Otroshi, Mortaza and Meschut, Gerson and Nesakumar, Aathavan}, year={2021}, pages={70–76} }' chicago: 'Otroshi, Mortaza, Gerson Meschut, and Aathavan Nesakumar. “The Influence of Manufacturing Processes and Optical Measurement Methods on the Damage Behavior of HX340LAD Micro-Alloyed Steels.” Journal of Manufacturing Engineering 16, no. 3 (2021): 70–76. https://doi.org/10.37255/jme.v16i3pp070-076.' ieee: 'M. Otroshi, G. Meschut, and A. Nesakumar, “The influence of manufacturing processes and optical measurement methods on the damage behavior of HX340LAD micro-alloyed steels,” Journal of Manufacturing Engineering, vol. 16, no. 3, pp. 70–76, 2021, doi: https://doi.org/10.37255/jme.v16i3pp070-076.' mla: Otroshi, Mortaza, et al. “The Influence of Manufacturing Processes and Optical Measurement Methods on the Damage Behavior of HX340LAD Micro-Alloyed Steels.” Journal of Manufacturing Engineering, vol. 16, no. 3, 2021, pp. 70–76, doi:https://doi.org/10.37255/jme.v16i3pp070-076. short: M. Otroshi, G. Meschut, A. Nesakumar, Journal of Manufacturing Engineering 16 (2021) 70–76. date_created: 2021-10-05T09:11:47Z date_updated: 2022-04-25T07:48:07Z department: - _id: '157' doi: https://doi.org/10.37255/jme.v16i3pp070-076 intvolume: ' 16' issue: '3' keyword: - Damage behaviour - Stress triaxiality - Manufacturing process and Optical measurement language: - iso: eng main_file_link: - open_access: '1' url: http://smenec.org/index.php/1/article/view/187 oa: '1' page: 70-76 publication: Journal of Manufacturing Engineering publication_status: published quality_controlled: '1' status: public title: The influence of manufacturing processes and optical measurement methods on the damage behavior of HX340LAD micro-alloyed steels type: journal_article user_id: '71269' volume: 16 year: '2021' ... --- _id: '24551' abstract: - lang: eng text: "Access to precise meteorological data is crucial to be able to plan and install renewable energy systems \r\nsuch as solar power plants and wind farms. In case of solar energy, knowledge of local irradiance and air temperature \r\nvalues is very important. For this, various methods can be used such as installing local weather stations or using \r\nmeteorological data from different organizations such as Meteonorm or official Deutscher Wetterdienst (DWD). An \r\nalternative is to use satellite reanalysis datasets provided by organizations like the National Aeronautics and Space \r\nAdministration (NASA) and European Centre for Medium-Range Weather Forecasts (ECMWF). In this paper the \r\n“Modern-Era Retrospective analysis for Research and Applications” dataset version 2 (MERRA-2) will be presented, \r\nand its performance will be evaluated by comparing it to locally measured datasets provided by Meteonorm and DWD. \r\nThe analysis shows very high correlation between MERRA-2 and local measurements (correlation coefficients of 0.99) \r\nfor monthly global irradiance and air temperature values. The results prove the suitability of MERRA-2 data for \r\napplications requiring long historical data. Moreover, availability of MERRA-2 for the whole world with an acceptable \r\nresolution makes it a very valuable dataset." author: - first_name: Arash full_name: Khatibi, Arash id: '43538' last_name: Khatibi - first_name: Stefan full_name: Krauter, Stefan id: '28836' last_name: Krauter orcid: 0000-0002-3594-260X citation: ama: 'Khatibi A, Krauter S. Comparison and Validation of Irradiance Data: Satellite Meteorological Dataset MERRA-2 vs. Meteonorm and German Weather Service (DWD). In: Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021). ; 2021:1141-1147. doi:10.4229/EUPVSEC20212021-5BV.4.11' apa: 'Khatibi, A., & Krauter, S. (2021). Comparison and Validation of Irradiance Data: Satellite Meteorological Dataset MERRA-2 vs. Meteonorm and German Weather Service (DWD). Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021), 1141–1147. https://doi.org/10.4229/EUPVSEC20212021-5BV.4.11' bibtex: '@inproceedings{Khatibi_Krauter_2021, title={Comparison and Validation of Irradiance Data: Satellite Meteorological Dataset MERRA-2 vs. Meteonorm and German Weather Service (DWD)}, DOI={10.4229/EUPVSEC20212021-5BV.4.11}, booktitle={Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021)}, author={Khatibi, Arash and Krauter, Stefan}, year={2021}, pages={1141–1147} }' chicago: 'Khatibi, Arash, and Stefan Krauter. “Comparison and Validation of Irradiance Data: Satellite Meteorological Dataset MERRA-2 vs. Meteonorm and German Weather Service (DWD).” In Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021), 1141–47, 2021. https://doi.org/10.4229/EUPVSEC20212021-5BV.4.11.' ieee: 'A. Khatibi and S. Krauter, “Comparison and Validation of Irradiance Data: Satellite Meteorological Dataset MERRA-2 vs. Meteonorm and German Weather Service (DWD),” in Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021), 2021, pp. 1141–1147, doi: 10.4229/EUPVSEC20212021-5BV.4.11.' mla: 'Khatibi, Arash, and Stefan Krauter. “Comparison and Validation of Irradiance Data: Satellite Meteorological Dataset MERRA-2 vs. Meteonorm and German Weather Service (DWD).” Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021), 2021, pp. 1141–47, doi:10.4229/EUPVSEC20212021-5BV.4.11.' short: 'A. Khatibi, S. Krauter, in: Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021), 2021, pp. 1141–1147.' conference: end_date: 2021-09-10 name: 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021) start_date: 2021-09-06 date_created: 2021-09-16T10:20:41Z date_updated: 2022-01-06T13:29:51Z ddc: - '550' department: - _id: '53' doi: 10.4229/EUPVSEC20212021-5BV.4.11 file: - access_level: closed content_type: application/pdf creator: krauter date_created: 2022-01-06T13:26:47Z date_updated: 2022-01-06T13:26:47Z file_id: '29176' file_name: Khatibi Krauter - MERRA 2 vs Meteonorm - EUPVSEC 2021.pdf file_size: 2475972 relation: main_file success: 1 file_date_updated: 2022-01-06T13:26:47Z has_accepted_license: '1' keyword: - Energy potential estimation - Photovoltaic - Solar radiation - Temperature measurement - Satellite data - Meteonorm - MERRA-2 - DWD language: - iso: eng page: 1141 - 1147 publication: Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021) publication_identifier: isbn: - 3-936338-78-7 publication_status: published quality_controlled: '1' status: public title: 'Comparison and Validation of Irradiance Data: Satellite Meteorological Dataset MERRA-2 vs. Meteonorm and German Weather Service (DWD)' type: conference user_id: '28836' year: '2021' ... --- _id: '32560' abstract: - lang: eng text: "Several methods are available to answer questions regarding similarity and accuracy,\r\neach of which has specific properties and limitations. This study focuses on the\r\nLatent Congruence Model (LCM; Cheung, 2009), because of its capacity to deal\r\nwith cross-informant measurement invariance issues. Until now, no cross-national\r\napplications of LCM are present in the literature, perhaps because of the difficulty\r\nto deal with both cross-national and cross-informant measurement issues implied by\r\nthose models. This study presents a step-by-step procedure to apply LCM to dyadic\r\ncross-national research designs controlling for both cross-national and cross-informant\r\nmeasurement invariance. An illustrative example on parent–child support exchanges in\r\nItaly and Germany is provided. Findings help to show the different possible scenarios\r\nof partial invariance, and a discussion related to how to deal with those scenarios is\r\nprovided. Future perspectives in the study of parent–child similarity and accuracy in\r\ncross-national research will be discussed." article_number: '672383' author: - first_name: Semira full_name: Tagliabue, Semira last_name: Tagliabue - first_name: Michela full_name: Zambelli, Michela last_name: Zambelli - first_name: Angela full_name: Sorgente, Angela last_name: Sorgente - first_name: Sabrina full_name: Sommer, Sabrina last_name: Sommer - first_name: Christian full_name: Hoellger, Christian last_name: Hoellger - first_name: Heike M. full_name: Buhl, Heike M. id: '27152' last_name: Buhl - first_name: Margherita full_name: Lanz, Margherita last_name: Lanz citation: ama: 'Tagliabue S, Zambelli M, Sorgente A, et al. Latent Congruence Model to Investigate Similarity and Accuracy in Family Members’ Perception: The Challenge of Cross-National and Cross-Informant Measurement (Non)Invariance. Frontiers in Psychology. 2021;12. doi:10.3389/fpsyg.2021.672383' apa: 'Tagliabue, S., Zambelli, M., Sorgente, A., Sommer, S., Hoellger, C., Buhl, H. M., & Lanz, M. (2021). Latent Congruence Model to Investigate Similarity and Accuracy in Family Members’ Perception: The Challenge of Cross-National and Cross-Informant Measurement (Non)Invariance. Frontiers in Psychology, 12, Article 672383. https://doi.org/10.3389/fpsyg.2021.672383' bibtex: '@article{Tagliabue_Zambelli_Sorgente_Sommer_Hoellger_Buhl_Lanz_2021, title={Latent Congruence Model to Investigate Similarity and Accuracy in Family Members’ Perception: The Challenge of Cross-National and Cross-Informant Measurement (Non)Invariance}, volume={12}, DOI={10.3389/fpsyg.2021.672383}, number={672383}, journal={Frontiers in Psychology}, publisher={Frontiers Media SA}, author={Tagliabue, Semira and Zambelli, Michela and Sorgente, Angela and Sommer, Sabrina and Hoellger, Christian and Buhl, Heike M. and Lanz, Margherita}, year={2021} }' chicago: 'Tagliabue, Semira, Michela Zambelli, Angela Sorgente, Sabrina Sommer, Christian Hoellger, Heike M. Buhl, and Margherita Lanz. “Latent Congruence Model to Investigate Similarity and Accuracy in Family Members’ Perception: The Challenge of Cross-National and Cross-Informant Measurement (Non)Invariance.” Frontiers in Psychology 12 (2021). https://doi.org/10.3389/fpsyg.2021.672383.' ieee: 'S. Tagliabue et al., “Latent Congruence Model to Investigate Similarity and Accuracy in Family Members’ Perception: The Challenge of Cross-National and Cross-Informant Measurement (Non)Invariance,” Frontiers in Psychology, vol. 12, Art. no. 672383, 2021, doi: 10.3389/fpsyg.2021.672383.' mla: 'Tagliabue, Semira, et al. “Latent Congruence Model to Investigate Similarity and Accuracy in Family Members’ Perception: The Challenge of Cross-National and Cross-Informant Measurement (Non)Invariance.” Frontiers in Psychology, vol. 12, 672383, Frontiers Media SA, 2021, doi:10.3389/fpsyg.2021.672383.' short: S. Tagliabue, M. Zambelli, A. Sorgente, S. Sommer, C. Hoellger, H.M. Buhl, M. Lanz, Frontiers in Psychology 12 (2021). date_created: 2022-08-03T05:59:20Z date_updated: 2022-08-29T06:38:34Z department: - _id: '427' doi: 10.3389/fpsyg.2021.672383 intvolume: ' 12' keyword: - latent congruence model - measurement invariance - similarity - accuracy - cross-national - cross-informant - parent-child relationship - support exchanges language: - iso: eng main_file_link: - open_access: '1' url: https://www.frontiersin.org/articles/10.3389/fpsyg.2021.672383/pdf oa: '1' publication: Frontiers in Psychology publication_identifier: issn: - 1664-1078 publication_status: published publisher: Frontiers Media SA status: public title: 'Latent Congruence Model to Investigate Similarity and Accuracy in Family Members'' Perception: The Challenge of Cross-National and Cross-Informant Measurement (Non)Invariance' type: journal_article user_id: '42165' volume: 12 year: '2021' ... --- _id: '23465' abstract: - lang: eng text: One of the main objectives of production engineering is to reproducibly manufacture (complex) defect-free parts. To achieve this, it is necessary to employ an appropriate process or tool design. While this will generally prove successful, it cannot, however, offset stochastic defects with local variations in material properties. Closed-loop process control represents a promising approach for a solution in this context. The state of the art involves using this approach to control geometric parameters such as a length. So far, no research or applications have been conducted with closed-loop control for microstructure and product properties. In the project on which this paper is based, the local martensite content of parts is to be adjusted in a highly precise and reproducible manner. The forming process employed is a special, property-controlled flow-forming process. A model-based controller is thus to generate corresponding correction values for the tool-path geometry and tool-path velocity on the basis of online martensite content measurements. For the controller model, it is planned to use a special process or microstructure (correlation) model. The planned paper not only describes the experimental setup but also presents results of initial experimental investigations for subsequent use in the closed-loop control of α’-martensite content during flow-forming. author: - first_name: Bahman full_name: Arian, Bahman id: '36287' last_name: Arian - first_name: Werner full_name: Homberg, Werner id: '233' last_name: Homberg - first_name: Markus full_name: Riepold, Markus last_name: Riepold - first_name: Ansgar full_name: Trächtler, Ansgar id: '552' last_name: Trächtler - first_name: Julian full_name: Rozo Vasquez, Julian last_name: Rozo Vasquez - first_name: Frank full_name: Walther, Frank last_name: Walther citation: ama: 'Arian B, Homberg W, Riepold M, Trächtler A, Rozo Vasquez J, Walther F. Forming of metastable austenitic stainless steel tubes with axially graded martensite content by flow-forming. In: ULiège Library; 2021.' apa: Arian, B., Homberg, W., Riepold, M., Trächtler, A., Rozo Vasquez, J., & Walther, F. (2021). Forming of metastable austenitic stainless steel tubes with axially graded martensite content by flow-forming. 24th International Conference on Material Forming - ESAFORM 2021, Liège, Belgium. bibtex: '@inproceedings{Arian_Homberg_Riepold_Trächtler_Rozo Vasquez_Walther_2021, place={Liège}, title={Forming of metastable austenitic stainless steel tubes with axially graded martensite content by flow-forming}, publisher={ULiège Library}, author={Arian, Bahman and Homberg, Werner and Riepold, Markus and Trächtler, Ansgar and Rozo Vasquez, Julian and Walther, Frank}, year={2021} }' chicago: 'Arian, Bahman, Werner Homberg, Markus Riepold, Ansgar Trächtler, Julian Rozo Vasquez, and Frank Walther. “Forming of Metastable Austenitic Stainless Steel Tubes with Axially Graded Martensite Content by Flow-Forming.” Liège: ULiège Library, 2021.' ieee: B. Arian, W. Homberg, M. Riepold, A. Trächtler, J. Rozo Vasquez, and F. Walther, “Forming of metastable austenitic stainless steel tubes with axially graded martensite content by flow-forming,” presented at the 24th International Conference on Material Forming - ESAFORM 2021, Liège, Belgium, 2021. mla: Arian, Bahman, et al. Forming of Metastable Austenitic Stainless Steel Tubes with Axially Graded Martensite Content by Flow-Forming. ULiège Library, 2021. short: 'B. Arian, W. Homberg, M. Riepold, A. Trächtler, J. Rozo Vasquez, F. Walther, in: ULiège Library, Liège, 2021.' conference: end_date: 2021-04-16 location: Liège, Belgium name: 24th International Conference on Material Forming - ESAFORM 2021 start_date: 2021-04-14 date_created: 2021-08-23T13:00:35Z date_updated: 2023-05-02T08:27:48Z department: - _id: '156' - _id: '153' - _id: '241' keyword: - Flow-forming - Spinning - Process Strategy - Martensite Content - Property Control - Micromagnetic Measurement - Metastable Austenitic Stainless Steel language: - iso: eng main_file_link: - open_access: '1' url: https://popups.uliege.be/esaform21/index.php?id=2759 oa: '1' place: Liège publication_identifier: eisbn: - 978-2-87019-303-7 isbn: - 978-2-87019-302-0 publication_status: published publisher: ULiège Library quality_controlled: '1' status: public title: Forming of metastable austenitic stainless steel tubes with axially graded martensite content by flow-forming type: conference user_id: '36287' year: '2021' ... --- _id: '46334' abstract: - lang: eng text: We build upon a recently proposed multi-objective view onto performance measurement of single-objective stochastic solvers. The trade-off between the fraction of failed runs and the mean runtime of successful runs – both to be minimized – is directly analyzed based on a study on algorithm selection of inexact state-of-the-art solvers for the famous Traveling Salesperson Problem (TSP). Moreover, we adopt the hypervolume indicator (HV) commonly used in multi-objective optimization for simultaneously assessing both conflicting objectives and investigate relations to commonly used performance indicators, both theoretically and empirically. Next to Penalized Average Runtime (PAR) and Penalized Quantile Runtime (PQR), the HV measure is used as a core concept within the construction of per-instance algorithm selection models offering interesting insights into complementary behavior of inexact TSP solvers. author: - first_name: Jakob full_name: Bossek, Jakob last_name: Bossek - first_name: Pascal full_name: Kerschke, Pascal last_name: Kerschke - first_name: Heike full_name: Trautmann, Heike id: '100740' last_name: Trautmann orcid: 0000-0002-9788-8282 citation: ama: Bossek J, Kerschke P, Trautmann H. A multi-objective perspective on performance assessment and automated selection of single-objective optimization algorithms. Applied Soft Computing. 2020;88:105901. doi:https://doi.org/10.1016/j.asoc.2019.105901 apa: Bossek, J., Kerschke, P., & Trautmann, H. (2020). A multi-objective perspective on performance assessment and automated selection of single-objective optimization algorithms. Applied Soft Computing, 88, 105901. https://doi.org/10.1016/j.asoc.2019.105901 bibtex: '@article{Bossek_Kerschke_Trautmann_2020, title={A multi-objective perspective on performance assessment and automated selection of single-objective optimization algorithms}, volume={88}, DOI={https://doi.org/10.1016/j.asoc.2019.105901}, journal={Applied Soft Computing}, author={Bossek, Jakob and Kerschke, Pascal and Trautmann, Heike}, year={2020}, pages={105901} }' chicago: 'Bossek, Jakob, Pascal Kerschke, and Heike Trautmann. “A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms.” Applied Soft Computing 88 (2020): 105901. https://doi.org/10.1016/j.asoc.2019.105901.' ieee: 'J. Bossek, P. Kerschke, and H. Trautmann, “A multi-objective perspective on performance assessment and automated selection of single-objective optimization algorithms,” Applied Soft Computing, vol. 88, p. 105901, 2020, doi: https://doi.org/10.1016/j.asoc.2019.105901.' mla: Bossek, Jakob, et al. “A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms.” Applied Soft Computing, vol. 88, 2020, p. 105901, doi:https://doi.org/10.1016/j.asoc.2019.105901. short: J. Bossek, P. Kerschke, H. Trautmann, Applied Soft Computing 88 (2020) 105901. date_created: 2023-08-04T07:42:26Z date_updated: 2023-10-16T13:07:59Z department: - _id: '34' - _id: '819' doi: https://doi.org/10.1016/j.asoc.2019.105901 intvolume: ' 88' keyword: - Algorithm selection - Multi-objective optimization - Performance measurement - Combinatorial optimization - Traveling Salesperson Problem language: - iso: eng page: '105901' publication: Applied Soft Computing publication_identifier: issn: - 1568-4946 status: public title: A multi-objective perspective on performance assessment and automated selection of single-objective optimization algorithms type: journal_article user_id: '15504' volume: 88 year: '2020' ... --- _id: '48848' abstract: - lang: eng text: We build upon a recently proposed multi-objective view onto performance measurement of single-objective stochastic solvers. The trade-off between the fraction of failed runs and the mean runtime of successful runs \textendash both to be minimized \textendash is directly analyzed based on a study on algorithm selection of inexact state-of-the-art solvers for the famous Traveling Salesperson Problem (TSP). Moreover, we adopt the hypervolume indicator (HV) commonly used in multi-objective optimization for simultaneously assessing both conflicting objectives and investigate relations to commonly used performance indicators, both theoretically and empirically. Next to Penalized Average Runtime (PAR) and Penalized Quantile Runtime (PQR), the HV measure is used as a core concept within the construction of per-instance algorithm selection models offering interesting insights into complementary behavior of inexact TSP solvers. \textbullet The multi-objective perspective is naturally generalizable to multiple objectives. \textbullet Proof of relationship between HV and the PAR in the considered bi-objective space. \textbullet New insights into complementary behavior of stochastic optimization algorithms. author: - first_name: Jakob full_name: Bossek, Jakob id: '102979' last_name: Bossek orcid: 0000-0002-4121-4668 - first_name: Pascal full_name: Kerschke, Pascal last_name: Kerschke - first_name: Heike full_name: Trautmann, Heike last_name: Trautmann citation: ama: Bossek J, Kerschke P, Trautmann H. A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms. Applied Soft Computing. 2020;88(C). doi:10.1016/j.asoc.2019.105901 apa: Bossek, J., Kerschke, P., & Trautmann, H. (2020). A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms. Applied Soft Computing, 88(C). https://doi.org/10.1016/j.asoc.2019.105901 bibtex: '@article{Bossek_Kerschke_Trautmann_2020, title={A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms}, volume={88}, DOI={10.1016/j.asoc.2019.105901}, number={C}, journal={Applied Soft Computing}, author={Bossek, Jakob and Kerschke, Pascal and Trautmann, Heike}, year={2020} }' chicago: Bossek, Jakob, Pascal Kerschke, and Heike Trautmann. “A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms.” Applied Soft Computing 88, no. C (2020). https://doi.org/10.1016/j.asoc.2019.105901. ieee: 'J. Bossek, P. Kerschke, and H. Trautmann, “A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms,” Applied Soft Computing, vol. 88, no. C, 2020, doi: 10.1016/j.asoc.2019.105901.' mla: Bossek, Jakob, et al. “A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms.” Applied Soft Computing, vol. 88, no. C, 2020, doi:10.1016/j.asoc.2019.105901. short: J. Bossek, P. Kerschke, H. Trautmann, Applied Soft Computing 88 (2020). date_created: 2023-11-14T15:58:53Z date_updated: 2023-12-13T10:52:17Z department: - _id: '819' doi: 10.1016/j.asoc.2019.105901 intvolume: ' 88' issue: C keyword: - Algorithm selection - Combinatorial optimization - Multi-objective optimization - Performance measurement - Traveling Salesperson Problem language: - iso: eng publication: Applied Soft Computing publication_identifier: issn: - 1568-4946 status: public title: A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms type: journal_article user_id: '102979' volume: 88 year: '2020' ... --- _id: '48875' abstract: - lang: eng text: A multiobjective perspective onto common performance measures such as the PAR10 score or the expected runtime of single-objective stochastic solvers is presented by directly investigating the tradeoff between the fraction of failed runs and the average runtime. Multi-objective indicators operating in the bi-objective space allow for an overall performance comparison on a set of instances paving the way for instance-based automated algorithm selection techniques. author: - first_name: Jakob full_name: Bossek, Jakob id: '102979' last_name: Bossek orcid: 0000-0002-4121-4668 - first_name: Heike full_name: Trautmann, Heike last_name: Trautmann citation: ama: 'Bossek J, Trautmann H. Multi-Objective Performance Measurement: Alternatives to PAR10 and Expected Running Time. In: Battiti R, Brunato M, Kotsireas I, Pardalos PM, eds. Learning and Intelligent Optimization. Lecture Notes in Computer Science. Springer International Publishing; 2019:215–219. doi:10.1007/978-3-030-05348-2_19' apa: 'Bossek, J., & Trautmann, H. (2019). Multi-Objective Performance Measurement: Alternatives to PAR10 and Expected Running Time. In R. Battiti, M. Brunato, I. Kotsireas, & P. M. Pardalos (Eds.), Learning and Intelligent Optimization (pp. 215–219). Springer International Publishing. https://doi.org/10.1007/978-3-030-05348-2_19' bibtex: '@inproceedings{Bossek_Trautmann_2019, place={Cham}, series={Lecture Notes in Computer Science}, title={Multi-Objective Performance Measurement: Alternatives to PAR10 and Expected Running Time}, DOI={10.1007/978-3-030-05348-2_19}, booktitle={Learning and Intelligent Optimization}, publisher={Springer International Publishing}, author={Bossek, Jakob and Trautmann, Heike}, editor={Battiti, Roberto and Brunato, Mauro and Kotsireas, Ilias and Pardalos, Panos M.}, year={2019}, pages={215–219}, collection={Lecture Notes in Computer Science} }' chicago: 'Bossek, Jakob, and Heike Trautmann. “Multi-Objective Performance Measurement: Alternatives to PAR10 and Expected Running Time.” In Learning and Intelligent Optimization, edited by Roberto Battiti, Mauro Brunato, Ilias Kotsireas, and Panos M. Pardalos, 215–219. Lecture Notes in Computer Science. Cham: Springer International Publishing, 2019. https://doi.org/10.1007/978-3-030-05348-2_19.' ieee: 'J. Bossek and H. Trautmann, “Multi-Objective Performance Measurement: Alternatives to PAR10 and Expected Running Time,” in Learning and Intelligent Optimization, 2019, pp. 215–219, doi: 10.1007/978-3-030-05348-2_19.' mla: 'Bossek, Jakob, and Heike Trautmann. “Multi-Objective Performance Measurement: Alternatives to PAR10 and Expected Running Time.” Learning and Intelligent Optimization, edited by Roberto Battiti et al., Springer International Publishing, 2019, pp. 215–219, doi:10.1007/978-3-030-05348-2_19.' short: 'J. Bossek, H. Trautmann, in: R. Battiti, M. Brunato, I. Kotsireas, P.M. Pardalos (Eds.), Learning and Intelligent Optimization, Springer International Publishing, Cham, 2019, pp. 215–219.' date_created: 2023-11-14T15:58:57Z date_updated: 2023-12-13T10:47:32Z department: - _id: '819' doi: 10.1007/978-3-030-05348-2_19 editor: - first_name: Roberto full_name: Battiti, Roberto last_name: Battiti - first_name: Mauro full_name: Brunato, Mauro last_name: Brunato - first_name: Ilias full_name: Kotsireas, Ilias last_name: Kotsireas - first_name: Panos M. full_name: Pardalos, Panos M. last_name: Pardalos extern: '1' keyword: - Algorithm selection - Performance measurement language: - iso: eng page: 215–219 place: Cham publication: Learning and Intelligent Optimization publication_identifier: isbn: - 978-3-030-05348-2 publisher: Springer International Publishing series_title: Lecture Notes in Computer Science status: public title: 'Multi-Objective Performance Measurement: Alternatives to PAR10 and Expected Running Time' type: conference user_id: '102979' year: '2019' ... --- _id: '8160' abstract: - lang: eng text: An important task in quantum physics is the estimation of local quantities for ground states of local Hamiltonians. Recently, Ambainis defined the complexity class P^QMA[log], and motivated its study by showing that the physical task of estimating the expectation value of a local observable against the ground state of a local Hamiltonian is P^QMA[log]-complete. In this paper, we continue the study of P^QMA[log], obtaining the following results. The P^QMA[log]-completeness result of Ambainis requires O(log n)-local observ- ables and Hamiltonians. We show that simulating even a single qubit measurement on ground states of 5-local Hamiltonians is P^QMA[log]-complete, resolving an open question of Ambainis. We formalize the complexity theoretic study of estimating two-point correlation functions against ground states, and show that this task is similarly P^QMA[log]-complete. P^QMA[log] is thought of as "slightly harder" than QMA. We justify this formally by exploiting the hierarchical voting technique of Beigel, Hemachandra, and Wechsung to show P^QMA[log] \subseteq PP. This improves the containment QMA \subseteq PP from Kitaev and Watrous. A central theme of this work is the subtlety involved in the study of oracle classes in which the oracle solves a promise problem. In this vein, we identify a flaw in Ambainis' prior work regarding a P^UQMA[log]-hardness proof for estimating spectral gaps of local Hamiltonians. By introducing a "query validation" technique, we build on his prior work to obtain P^UQMA[log]-hardness for estimating spectral gaps under polynomial-time Turing reductions. author: - first_name: Sevag full_name: Gharibian, Sevag id: '71541' last_name: Gharibian orcid: 0000-0002-9992-3379 - first_name: Justin full_name: Yirka, Justin last_name: Yirka citation: ama: 'Gharibian S, Yirka J. The Complexity of Simulating Local Measurements on Quantum Systems. In: Wilde M, ed. 12th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2017). Vol 73. Leibniz International Proceedings in Informatics (LIPIcs). Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik; 2018:2:1-2:17. doi:10.4230/LIPIcs.TQC.2017.2' apa: Gharibian, S., & Yirka, J. (2018). The Complexity of Simulating Local Measurements on Quantum Systems. In M. Wilde (Ed.), 12th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2017) (Vol. 73, p. 2:1-2:17). Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik. https://doi.org/10.4230/LIPIcs.TQC.2017.2 bibtex: '@inproceedings{Gharibian_Yirka_2018, place={Dagstuhl, Germany}, series={Leibniz International Proceedings in Informatics (LIPIcs)}, title={The Complexity of Simulating Local Measurements on Quantum Systems}, volume={73}, DOI={10.4230/LIPIcs.TQC.2017.2}, booktitle={12th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2017)}, publisher={Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik}, author={Gharibian, Sevag and Yirka, Justin}, editor={Wilde, Mark}, year={2018}, pages={2:1-2:17}, collection={Leibniz International Proceedings in Informatics (LIPIcs)} }' chicago: 'Gharibian, Sevag, and Justin Yirka. “The Complexity of Simulating Local Measurements on Quantum Systems.” In 12th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2017), edited by Mark Wilde, 73:2:1-2:17. Leibniz International Proceedings in Informatics (LIPIcs). Dagstuhl, Germany: Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik, 2018. https://doi.org/10.4230/LIPIcs.TQC.2017.2.' ieee: 'S. Gharibian and J. Yirka, “The Complexity of Simulating Local Measurements on Quantum Systems,” in 12th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2017), Paris, France, 2018, vol. 73, p. 2:1-2:17, doi: 10.4230/LIPIcs.TQC.2017.2.' mla: Gharibian, Sevag, and Justin Yirka. “The Complexity of Simulating Local Measurements on Quantum Systems.” 12th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2017), edited by Mark Wilde, vol. 73, Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik, 2018, p. 2:1-2:17, doi:10.4230/LIPIcs.TQC.2017.2. short: 'S. Gharibian, J. Yirka, in: M. Wilde (Ed.), 12th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2017), Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik, Dagstuhl, Germany, 2018, p. 2:1-2:17.' conference: location: Paris, France name: 12th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2017) date_created: 2019-03-01T11:25:27Z date_updated: 2023-02-28T11:00:48Z department: - _id: '623' - _id: '7' doi: 10.4230/LIPIcs.TQC.2017.2 editor: - first_name: Mark full_name: Wilde, Mark last_name: Wilde external_id: arxiv: - '1606.05626' intvolume: ' 73' keyword: - Complexity theory - Quantum Merlin Arthur (QMA) - local Hamiltonian - local measurement - spectral gap language: - iso: eng main_file_link: - open_access: '1' url: http://drops.dagstuhl.de/opus/frontdoor.php?source_opus=8577 oa: '1' page: 2:1-2:17 place: Dagstuhl, Germany publication: 12th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2017) publication_identifier: unknown: - 978-3-95977-034-7 publication_status: published publisher: Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik series_title: Leibniz International Proceedings in Informatics (LIPIcs) status: public title: The Complexity of Simulating Local Measurements on Quantum Systems type: conference user_id: '71541' volume: 73 year: '2018' ... --- _id: '10676' author: - first_name: Nam full_name: Ho, Nam last_name: Ho - first_name: Paul full_name: Kaufmann, Paul last_name: Kaufmann - first_name: Marco full_name: Platzner, Marco id: '398' last_name: Platzner citation: ama: 'Ho N, Kaufmann P, Platzner M. Evolvable caches: Optimization of reconfigurable cache mappings for a LEON3/Linux-based multi-core processor. In: 2017 International Conference on Field Programmable Technology (ICFPT). ; 2017:215-218. doi:10.1109/FPT.2017.8280144' apa: 'Ho, N., Kaufmann, P., & Platzner, M. (2017). Evolvable caches: Optimization of reconfigurable cache mappings for a LEON3/Linux-based multi-core processor. In 2017 International Conference on Field Programmable Technology (ICFPT) (pp. 215–218). https://doi.org/10.1109/FPT.2017.8280144' bibtex: '@inproceedings{Ho_Kaufmann_Platzner_2017, title={Evolvable caches: Optimization of reconfigurable cache mappings for a LEON3/Linux-based multi-core processor}, DOI={10.1109/FPT.2017.8280144}, booktitle={2017 International Conference on Field Programmable Technology (ICFPT)}, author={Ho, Nam and Kaufmann, Paul and Platzner, Marco}, year={2017}, pages={215–218} }' chicago: 'Ho, Nam, Paul Kaufmann, and Marco Platzner. “Evolvable Caches: Optimization of Reconfigurable Cache Mappings for a LEON3/Linux-Based Multi-Core Processor.” In 2017 International Conference on Field Programmable Technology (ICFPT), 215–18, 2017. https://doi.org/10.1109/FPT.2017.8280144.' ieee: 'N. Ho, P. Kaufmann, and M. Platzner, “Evolvable caches: Optimization of reconfigurable cache mappings for a LEON3/Linux-based multi-core processor,” in 2017 International Conference on Field Programmable Technology (ICFPT), 2017, pp. 215–218.' mla: 'Ho, Nam, et al. “Evolvable Caches: Optimization of Reconfigurable Cache Mappings for a LEON3/Linux-Based Multi-Core Processor.” 2017 International Conference on Field Programmable Technology (ICFPT), 2017, pp. 215–18, doi:10.1109/FPT.2017.8280144.' short: 'N. Ho, P. Kaufmann, M. Platzner, in: 2017 International Conference on Field Programmable Technology (ICFPT), 2017, pp. 215–218.' date_created: 2019-07-10T11:22:59Z date_updated: 2022-01-06T06:50:49Z department: - _id: '78' doi: 10.1109/FPT.2017.8280144 keyword: - Linux - cache storage - microprocessor chips - multiprocessing systems - LEON3-Linux based multicore processor - MiBench suite - block sizes - cache adaptation - evolvable caches - memory-to-cache-index mapping function - processor caches - reconfigurable cache mapping optimization - reconfigurable hardware technology - replacement strategies - standard Linux OS - time a complete hardware implementation - Hardware - Indexes - Linux - Measurement - Multicore processing - Optimization - Training language: - iso: eng page: 215-218 publication: 2017 International Conference on Field Programmable Technology (ICFPT) status: public title: 'Evolvable caches: Optimization of reconfigurable cache mappings for a LEON3/Linux-based multi-core processor' type: conference user_id: '398' year: '2017' ... --- _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: '10674' author: - first_name: Nam full_name: Ho, Nam last_name: Ho - first_name: Paul full_name: Kaufmann, Paul last_name: Kaufmann - first_name: Marco full_name: Platzner, Marco id: '398' last_name: Platzner citation: ama: 'Ho N, Kaufmann P, Platzner M. A hardware/software infrastructure for performance monitoring on LEON3 multicore platforms. In: 24th Intl. Conf. on Field Programmable Logic and Applications (FPL). ; 2014:1-4. doi:10.1109/FPL.2014.6927437' apa: Ho, N., Kaufmann, P., & Platzner, M. (2014). A hardware/software infrastructure for performance monitoring on LEON3 multicore platforms. In 24th Intl. Conf. on Field Programmable Logic and Applications (FPL) (pp. 1–4). https://doi.org/10.1109/FPL.2014.6927437 bibtex: '@inproceedings{Ho_Kaufmann_Platzner_2014, title={A hardware/software infrastructure for performance monitoring on LEON3 multicore platforms}, DOI={10.1109/FPL.2014.6927437}, booktitle={24th Intl. Conf. on Field Programmable Logic and Applications (FPL)}, author={Ho, Nam and Kaufmann, Paul and Platzner, Marco}, year={2014}, pages={1–4} }' chicago: Ho, Nam, Paul Kaufmann, and Marco Platzner. “A Hardware/Software Infrastructure for Performance Monitoring on LEON3 Multicore Platforms.” In 24th Intl. Conf. on Field Programmable Logic and Applications (FPL), 1–4, 2014. https://doi.org/10.1109/FPL.2014.6927437. ieee: N. Ho, P. Kaufmann, and M. Platzner, “A hardware/software infrastructure for performance monitoring on LEON3 multicore platforms,” in 24th Intl. Conf. on Field Programmable Logic and Applications (FPL), 2014, pp. 1–4. mla: Ho, Nam, et al. “A Hardware/Software Infrastructure for Performance Monitoring on LEON3 Multicore Platforms.” 24th Intl. Conf. on Field Programmable Logic and Applications (FPL), 2014, pp. 1–4, doi:10.1109/FPL.2014.6927437. short: 'N. Ho, P. Kaufmann, M. Platzner, in: 24th Intl. Conf. on Field Programmable Logic and Applications (FPL), 2014, pp. 1–4.' date_created: 2019-07-10T11:18:01Z date_updated: 2022-01-06T06:50:49Z department: - _id: '78' doi: 10.1109/FPL.2014.6927437 keyword: - Linux - hardware-software codesign - multiprocessing systems - parallel processing - LEON3 multicore platform - Linux kernel - PMU - hardware counters - hardware-software infrastructure - high performance embedded computing - perf_event - performance monitoring unit - Computer architecture - Hardware - Monitoring - Phasor measurement units - Radiation detectors - Registers - Software language: - iso: eng page: 1-4 project: - _id: '31' grant_number: '257906' name: Engineering Proprioception in Computing Systems publication: 24th Intl. Conf. on Field Programmable Logic and Applications (FPL) status: public title: A hardware/software infrastructure for performance monitoring on LEON3 multicore platforms type: conference user_id: '3118' year: '2014' ... --- _id: '10677' author: - first_name: Nam full_name: Ho, Nam last_name: Ho - first_name: Paul full_name: Kaufmann, Paul last_name: Kaufmann - first_name: Marco full_name: Platzner, Marco id: '398' last_name: Platzner citation: ama: 'Ho N, Kaufmann P, Platzner M. Towards self-adaptive caches: A run-time reconfigurable multi-core infrastructure. In: 2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES). ; 2014:31-37. doi:10.1109/ICES.2014.7008719' apa: 'Ho, N., Kaufmann, P., & Platzner, M. (2014). Towards self-adaptive caches: A run-time reconfigurable multi-core infrastructure. In 2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES) (pp. 31–37). https://doi.org/10.1109/ICES.2014.7008719' bibtex: '@inproceedings{Ho_Kaufmann_Platzner_2014, title={Towards self-adaptive caches: A run-time reconfigurable multi-core infrastructure}, DOI={10.1109/ICES.2014.7008719}, booktitle={2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES)}, author={Ho, Nam and Kaufmann, Paul and Platzner, Marco}, year={2014}, pages={31–37} }' chicago: 'Ho, Nam, Paul Kaufmann, and Marco Platzner. “Towards Self-Adaptive Caches: A Run-Time Reconfigurable Multi-Core Infrastructure.” In 2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES), 31–37, 2014. https://doi.org/10.1109/ICES.2014.7008719.' ieee: 'N. Ho, P. Kaufmann, and M. Platzner, “Towards self-adaptive caches: A run-time reconfigurable multi-core infrastructure,” in 2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES), 2014, pp. 31–37.' mla: 'Ho, Nam, et al. “Towards Self-Adaptive Caches: A Run-Time Reconfigurable Multi-Core Infrastructure.” 2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES), 2014, pp. 31–37, doi:10.1109/ICES.2014.7008719.' short: 'N. Ho, P. Kaufmann, M. Platzner, in: 2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES), 2014, pp. 31–37.' date_created: 2019-07-10T11:23:00Z date_updated: 2022-01-06T06:50:49Z department: - _id: '78' doi: 10.1109/ICES.2014.7008719 keyword: - Linux - cache storage - embedded systems - granular computing - multiprocessing systems - reconfigurable architectures - Leon3 SPARe processor - custom logic events - evolvable-self-adaptable processor cache - fine granular profiling - integer unit events - measurement infrastructure - microarchitectural events - multicore embedded system - perf_event standard Linux performance measurement interface - processor properties - run-time reconfigurable memory-to-cache address mapping engine - run-time reconfigurable multicore infrastructure - split-level caching - Field programmable gate arrays - Frequency locked loops - Irrigation - Phasor measurement units - Registers - Weaving language: - iso: eng page: 31-37 publication: 2014 {IEEE} Intl. Conf. on Evolvable Systems (ICES) status: public title: 'Towards self-adaptive caches: A run-time reconfigurable multi-core infrastructure' type: conference user_id: '3118' year: '2014' ... --- _id: '11861' abstract: - lang: eng text: 'In this contribution we present a theoretical and experimental investigation into the effects of reverberation and noise on features in the logarithmic mel power spectral domain, an intermediate stage in the computation of the mel frequency cepstral coefficients, prevalent in automatic speech recognition (ASR). Gaining insight into the complex interaction between clean speech, noise, and noisy reverberant speech features is essential for any ASR system to be robust against noise and reverberation present in distant microphone input signals. The findings are gathered in a probabilistic formulation of an observation model which may be used in model-based feature compensation schemes. The proposed observation model extends previous models in three major directions: First, the contribution of additive background noise to the observation error is explicitly taken into account. Second, an energy compensation constant is introduced which ensures an unbiased estimate of the reverberant speech features, and, third, a recursive variant of the observation model is developed resulting in reduced computational complexity when used in model-based feature compensation. The experimental section is used to evaluate the accuracy of the model and to describe how its parameters can be determined from test data.' author: - first_name: Volker full_name: Leutnant, Volker last_name: Leutnant - first_name: Alexander full_name: Krueger, Alexander last_name: Krueger - first_name: Reinhold full_name: Haeb-Umbach, Reinhold id: '242' last_name: Haeb-Umbach citation: ama: Leutnant V, Krueger A, Haeb-Umbach R. A New Observation Model in the Logarithmic Mel Power Spectral Domain for the Automatic Recognition of Noisy Reverberant Speech. IEEE/ACM Transactions on Audio, Speech, and Language Processing. 2014;22(1):95-109. doi:10.1109/TASLP.2013.2285480 apa: Leutnant, V., Krueger, A., & Haeb-Umbach, R. (2014). A New Observation Model in the Logarithmic Mel Power Spectral Domain for the Automatic Recognition of Noisy Reverberant Speech. IEEE/ACM Transactions on Audio, Speech, and Language Processing, 22(1), 95–109. https://doi.org/10.1109/TASLP.2013.2285480 bibtex: '@article{Leutnant_Krueger_Haeb-Umbach_2014, title={A New Observation Model in the Logarithmic Mel Power Spectral Domain for the Automatic Recognition of Noisy Reverberant Speech}, volume={22}, DOI={10.1109/TASLP.2013.2285480}, number={1}, journal={IEEE/ACM Transactions on Audio, Speech, and Language Processing}, author={Leutnant, Volker and Krueger, Alexander and Haeb-Umbach, Reinhold}, year={2014}, pages={95–109} }' chicago: 'Leutnant, Volker, Alexander Krueger, and Reinhold Haeb-Umbach. “A New Observation Model in the Logarithmic Mel Power Spectral Domain for the Automatic Recognition of Noisy Reverberant Speech.” IEEE/ACM Transactions on Audio, Speech, and Language Processing 22, no. 1 (2014): 95–109. https://doi.org/10.1109/TASLP.2013.2285480.' ieee: V. Leutnant, A. Krueger, and R. Haeb-Umbach, “A New Observation Model in the Logarithmic Mel Power Spectral Domain for the Automatic Recognition of Noisy Reverberant Speech,” IEEE/ACM Transactions on Audio, Speech, and Language Processing, vol. 22, no. 1, pp. 95–109, 2014. mla: Leutnant, Volker, et al. “A New Observation Model in the Logarithmic Mel Power Spectral Domain for the Automatic Recognition of Noisy Reverberant Speech.” IEEE/ACM Transactions on Audio, Speech, and Language Processing, vol. 22, no. 1, 2014, pp. 95–109, doi:10.1109/TASLP.2013.2285480. short: V. Leutnant, A. Krueger, R. Haeb-Umbach, IEEE/ACM Transactions on Audio, Speech, and Language Processing 22 (2014) 95–109. date_created: 2019-07-12T05:29:41Z date_updated: 2022-01-06T06:51:11Z department: - _id: '54' doi: 10.1109/TASLP.2013.2285480 intvolume: ' 22' issue: '1' keyword: - computational complexity - reverberation - speech recognition - automatic speech recognition - background noise - clean speech - computational complexity - energy compensation - logarithmic mel power spectral domain - mel frequency cepstral coefficients - microphone input signals - model-based feature compensation schemes - noisy reverberant speech automatic recognition - noisy reverberant speech features - reverberation - Atmospheric modeling - Computational modeling - Noise - Noise measurement - Reverberation - Speech - Vectors - Model-based feature compensation - observation model for reverberant and noisy speech - recursive observation model - robust automatic speech recognition language: - iso: eng page: 95-109 publication: IEEE/ACM Transactions on Audio, Speech, and Language Processing publication_identifier: issn: - 2329-9290 status: public title: A New Observation Model in the Logarithmic Mel Power Spectral Domain for the Automatic Recognition of Noisy Reverberant Speech type: journal_article user_id: '44006' volume: 22 year: '2014' ... --- _id: '11740' abstract: - lang: eng text: In this contribution we derive the Maximum A-Posteriori (MAP) estimates of the parameters of a Gaussian Mixture Model (GMM) in the presence of noisy observations. We assume the distortion to be white Gaussian noise of known mean and variance. An approximate conjugate prior of the GMM parameters is derived allowing for a computationally efficient implementation in a sequential estimation framework. Simulations on artificially generated data demonstrate the superiority of the proposed method compared to the Maximum Likelihood technique and to the ordinary MAP approach, whose estimates are corrected by the known statistics of the distortion in a straightforward manner. author: - first_name: Aleksej full_name: Chinaev, Aleksej last_name: Chinaev - first_name: Reinhold full_name: Haeb-Umbach, Reinhold id: '242' last_name: Haeb-Umbach citation: ama: 'Chinaev A, Haeb-Umbach R. MAP-based Estimation of the Parameters of a Gaussian Mixture Model in the Presence of Noisy Observations. In: 38th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2013). ; 2013:3352-3356. doi:10.1109/ICASSP.2013.6638279' apa: Chinaev, A., & Haeb-Umbach, R. (2013). MAP-based Estimation of the Parameters of a Gaussian Mixture Model in the Presence of Noisy Observations. In 38th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2013) (pp. 3352–3356). https://doi.org/10.1109/ICASSP.2013.6638279 bibtex: '@inproceedings{Chinaev_Haeb-Umbach_2013, title={MAP-based Estimation of the Parameters of a Gaussian Mixture Model in the Presence of Noisy Observations}, DOI={10.1109/ICASSP.2013.6638279}, booktitle={38th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2013)}, author={Chinaev, Aleksej and Haeb-Umbach, Reinhold}, year={2013}, pages={3352–3356} }' chicago: Chinaev, Aleksej, and Reinhold Haeb-Umbach. “MAP-Based Estimation of the Parameters of a Gaussian Mixture Model in the Presence of Noisy Observations.” In 38th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2013), 3352–56, 2013. https://doi.org/10.1109/ICASSP.2013.6638279. ieee: A. Chinaev and R. Haeb-Umbach, “MAP-based Estimation of the Parameters of a Gaussian Mixture Model in the Presence of Noisy Observations,” in 38th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2013), 2013, pp. 3352–3356. mla: Chinaev, Aleksej, and Reinhold Haeb-Umbach. “MAP-Based Estimation of the Parameters of a Gaussian Mixture Model in the Presence of Noisy Observations.” 38th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2013), 2013, pp. 3352–56, doi:10.1109/ICASSP.2013.6638279. short: 'A. Chinaev, R. Haeb-Umbach, in: 38th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2013), 2013, pp. 3352–3356.' date_created: 2019-07-12T05:27:20Z date_updated: 2022-01-06T06:51:08Z department: - _id: '54' doi: 10.1109/ICASSP.2013.6638279 keyword: - Gaussian noise - maximum likelihood estimation - parameter estimation - GMM parameter - Gaussian mixture model - MAP estimation - Map-based estimation - maximum a-posteriori estimation - maximum likelihood technique - noisy observation - sequential estimation framework - white Gaussian noise - Additive noise - Gaussian mixture model - Maximum likelihood estimation - Noise measurement - Gaussian mixture model - Maximum a posteriori estimation - Maximum likelihood estimation language: - iso: eng main_file_link: - open_access: '1' url: https://groups.uni-paderborn.de/nt/pubs/2013/ChHa13.pdf oa: '1' page: 3352-3356 publication: 38th International Conference on Acoustics, Speech and Signal Processing (ICASSP 2013) publication_identifier: issn: - 1520-6149 related_material: link: - description: Poster relation: supplementary_material url: https://groups.uni-paderborn.de/nt/pubs/2013/ChHa13_Poster.pdf status: public title: MAP-based Estimation of the Parameters of a Gaussian Mixture Model in the Presence of Noisy Observations type: conference user_id: '44006' year: '2013' ... --- _id: '11816' abstract: - lang: eng text: In this paper, we consider the Maximum Likelihood (ML) estimation of the parameters of a GAUSSIAN in the presence of censored, i.e., clipped data. We show that the resulting Expectation Maximization (EM) algorithm delivers virtually biasfree and efficient estimates, and we discuss its convergence properties. We also discuss optimal classification in the presence of censored data. Censored data are frequently encountered in wireless LAN positioning systems based on the fingerprinting method employing signal strength measurements, due to the limited sensitivity of the portable devices. Experiments both on simulated and real-world data demonstrate the effectiveness of the proposed algorithms. author: - first_name: Manh Kha full_name: Hoang, Manh Kha last_name: Hoang - first_name: Reinhold full_name: Haeb-Umbach, Reinhold id: '242' last_name: Haeb-Umbach citation: ama: 'Hoang MK, Haeb-Umbach R. Parameter estimation and classification of censored Gaussian data with application to WiFi indoor positioning. In: 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013). ; 2013:3721-3725. doi:10.1109/ICASSP.2013.6638353' apa: Hoang, M. K., & Haeb-Umbach, R. (2013). Parameter estimation and classification of censored Gaussian data with application to WiFi indoor positioning. In 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013) (pp. 3721–3725). https://doi.org/10.1109/ICASSP.2013.6638353 bibtex: '@inproceedings{Hoang_Haeb-Umbach_2013, title={Parameter estimation and classification of censored Gaussian data with application to WiFi indoor positioning}, DOI={10.1109/ICASSP.2013.6638353}, booktitle={38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)}, author={Hoang, Manh Kha and Haeb-Umbach, Reinhold}, year={2013}, pages={3721–3725} }' chicago: Hoang, Manh Kha, and Reinhold Haeb-Umbach. “Parameter Estimation and Classification of Censored Gaussian Data with Application to WiFi Indoor Positioning.” In 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), 3721–25, 2013. https://doi.org/10.1109/ICASSP.2013.6638353. ieee: M. K. Hoang and R. Haeb-Umbach, “Parameter estimation and classification of censored Gaussian data with application to WiFi indoor positioning,” in 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), 2013, pp. 3721–3725. mla: Hoang, Manh Kha, and Reinhold Haeb-Umbach. “Parameter Estimation and Classification of Censored Gaussian Data with Application to WiFi Indoor Positioning.” 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), 2013, pp. 3721–25, doi:10.1109/ICASSP.2013.6638353. short: 'M.K. Hoang, R. Haeb-Umbach, in: 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), 2013, pp. 3721–3725.' date_created: 2019-07-12T05:28:48Z date_updated: 2022-01-06T06:51:09Z department: - _id: '54' doi: 10.1109/ICASSP.2013.6638353 keyword: - Gaussian processes - Global Positioning System - convergence - expectation-maximisation algorithm - fingerprint identification - indoor radio - signal classification - wireless LAN - EM algorithm - ML estimation - WiFi indoor positioning - censored Gaussian data classification - clipped data - convergence properties - expectation maximization algorithm - fingerprinting method - maximum likelihood estimation - optimal classification - parameters estimation - portable devices sensitivity - signal strength measurements - wireless LAN positioning systems - Convergence - IEEE 802.11 Standards - Maximum likelihood estimation - Parameter estimation - Position measurement - Training - Indoor positioning - censored data - expectation maximization - signal strength - wireless LAN language: - iso: eng main_file_link: - open_access: '1' url: https://groups.uni-paderborn.de/nt/pubs/2013/HoHa2013.pdf oa: '1' page: 3721-3725 publication: 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013) publication_identifier: issn: - 1520-6149 related_material: link: - description: Poster relation: supplementary_material url: https://groups.uni-paderborn.de/nt/pubs/2013/HoHa2013_Poster.pdf status: public title: Parameter estimation and classification of censored Gaussian data with application to WiFi indoor positioning type: conference user_id: '44006' year: '2013' ... --- _id: '11726' abstract: - lang: eng text: In this paper we present a robust location estimation algorithm especially focused on the accuracy in vertical position. A loosely-coupled error state space Kalman filter, which fuses sensor data of an Inertial Measurement Unit and the output of a Global Positioning System device, is augmented by height information from an altitude measurement unit. This unit consists of a barometric altimeter whose output is fused with topographic map information by a Kalman filter to provide robust information about the current vertical user position. These data replace the less reliable vertical position information provided the GPS device. It is shown that typical barometric errors like thermal divergences and fluctuations in the pressure due to changing weather conditions can be compensated by the topographic map information and the barometric error Kalman filter. The resulting height information is shown not only to be more reliable than height information provided by GPS. It also turns out that it leads to better attitude and thus better overall localization estimation accuracy due to the coupling of spatial orientations via the Direct Cosine Matrix. Results are presented both for artificially generated and field test data, where the user is moving by car. author: - first_name: Maik full_name: Bevermeier, Maik last_name: Bevermeier - first_name: Oliver full_name: Walter, Oliver last_name: Walter - first_name: Sven full_name: Peschke, Sven last_name: Peschke - first_name: Reinhold full_name: Haeb-Umbach, Reinhold id: '242' last_name: Haeb-Umbach citation: ama: 'Bevermeier M, Walter O, Peschke S, Haeb-Umbach R. Barometric height estimation combined with map-matching in a loosely-coupled Kalman-filter. In: 7th Workshop on Positioning Navigation and Communication (WPNC 2010). ; 2010:128-134. doi:10.1109/WPNC.2010.5650745' apa: Bevermeier, M., Walter, O., Peschke, S., & Haeb-Umbach, R. (2010). Barometric height estimation combined with map-matching in a loosely-coupled Kalman-filter. In 7th Workshop on Positioning Navigation and Communication (WPNC 2010) (pp. 128–134). https://doi.org/10.1109/WPNC.2010.5650745 bibtex: '@inproceedings{Bevermeier_Walter_Peschke_Haeb-Umbach_2010, title={Barometric height estimation combined with map-matching in a loosely-coupled Kalman-filter}, DOI={10.1109/WPNC.2010.5650745}, booktitle={7th Workshop on Positioning Navigation and Communication (WPNC 2010)}, author={Bevermeier, Maik and Walter, Oliver and Peschke, Sven and Haeb-Umbach, Reinhold}, year={2010}, pages={128–134} }' chicago: Bevermeier, Maik, Oliver Walter, Sven Peschke, and Reinhold Haeb-Umbach. “Barometric Height Estimation Combined with Map-Matching in a Loosely-Coupled Kalman-Filter.” In 7th Workshop on Positioning Navigation and Communication (WPNC 2010), 128–34, 2010. https://doi.org/10.1109/WPNC.2010.5650745. ieee: M. Bevermeier, O. Walter, S. Peschke, and R. Haeb-Umbach, “Barometric height estimation combined with map-matching in a loosely-coupled Kalman-filter,” in 7th Workshop on Positioning Navigation and Communication (WPNC 2010), 2010, pp. 128–134. mla: Bevermeier, Maik, et al. “Barometric Height Estimation Combined with Map-Matching in a Loosely-Coupled Kalman-Filter.” 7th Workshop on Positioning Navigation and Communication (WPNC 2010), 2010, pp. 128–34, doi:10.1109/WPNC.2010.5650745. short: 'M. Bevermeier, O. Walter, S. Peschke, R. Haeb-Umbach, in: 7th Workshop on Positioning Navigation and Communication (WPNC 2010), 2010, pp. 128–134.' date_created: 2019-07-12T05:27:04Z date_updated: 2022-01-06T06:51:07Z department: - _id: '54' doi: 10.1109/WPNC.2010.5650745 keyword: - altitude measurement unit - barometers - barometric altimeter - barometric error Kalman filter - barometric height estimation - direct cosine matrix - global positioning system - Global Positioning System - GPS device - height information - height measurement - inertial measurement unit - Kalman filters - loosely-coupled error state space Kalman filter - loosely-coupled Kalman-filter - map matching - robust information - robust location estimation - sensor fusion - topographic map information - vertical user position language: - iso: eng main_file_link: - open_access: '1' url: https://groups.uni-paderborn.de/nt/pubs/2010/BeWaPeHa10.pdf oa: '1' page: 128-134 publication: 7th Workshop on Positioning Navigation and Communication (WPNC 2010) status: public title: Barometric height estimation combined with map-matching in a loosely-coupled Kalman-filter type: conference user_id: '44006' year: '2010' ... --- _id: '21774' author: - first_name: Harald full_name: Fricke, Harald last_name: Fricke - first_name: Andreas full_name: Elsner, Andreas last_name: Elsner - first_name: Reiner full_name: Weise, Reiner last_name: Weise - first_name: Matthias full_name: Bolte, Matthias last_name: Bolte - first_name: Jörg full_name: van den Hoff, Jörg last_name: van den Hoff - first_name: Wolfgang full_name: Burchert, Wolfgang last_name: Burchert - first_name: Gitta full_name: Domik, Gitta id: '90' last_name: Domik - first_name: Eva full_name: Fricke, Eva last_name: Fricke citation: ama: 'Fricke H, Elsner A, Weise R, et al. Quantitative myocardial perfusion PET combined with coronary anatomy derived from CT angiography: Validation of a new fusion and visualisation software. Zeitschrift für Medizinische Physik. 2009;19(3):182-188. doi:10.1016/j.zemedi.2009.05.005' apa: 'Fricke, H., Elsner, A., Weise, R., Bolte, M., van den Hoff, J., Burchert, W., … Fricke, E. (2009). Quantitative myocardial perfusion PET combined with coronary anatomy derived from CT angiography: Validation of a new fusion and visualisation software. Zeitschrift Für Medizinische Physik, 19(3), 182–188. https://doi.org/10.1016/j.zemedi.2009.05.005' bibtex: '@article{Fricke_Elsner_Weise_Bolte_van den Hoff_Burchert_Domik_Fricke_2009, title={Quantitative myocardial perfusion PET combined with coronary anatomy derived from CT angiography: Validation of a new fusion and visualisation software}, volume={19}, DOI={10.1016/j.zemedi.2009.05.005}, number={3}, journal={Zeitschrift für Medizinische Physik}, author={Fricke, Harald and Elsner, Andreas and Weise, Reiner and Bolte, Matthias and van den Hoff, Jörg and Burchert, Wolfgang and Domik, Gitta and Fricke, Eva}, year={2009}, pages={182–188} }' chicago: 'Fricke, Harald, Andreas Elsner, Reiner Weise, Matthias Bolte, Jörg van den Hoff, Wolfgang Burchert, Gitta Domik, and Eva Fricke. “Quantitative Myocardial Perfusion PET Combined with Coronary Anatomy Derived from CT Angiography: Validation of a New Fusion and Visualisation Software.” Zeitschrift Für Medizinische Physik 19, no. 3 (2009): 182–88. https://doi.org/10.1016/j.zemedi.2009.05.005.' ieee: 'H. Fricke et al., “Quantitative myocardial perfusion PET combined with coronary anatomy derived from CT angiography: Validation of a new fusion and visualisation software,” Zeitschrift für Medizinische Physik, vol. 19, no. 3, pp. 182–188, 2009.' mla: 'Fricke, Harald, et al. “Quantitative Myocardial Perfusion PET Combined with Coronary Anatomy Derived from CT Angiography: Validation of a New Fusion and Visualisation Software.” Zeitschrift Für Medizinische Physik, vol. 19, no. 3, 2009, pp. 182–88, doi:10.1016/j.zemedi.2009.05.005.' short: H. Fricke, A. Elsner, R. Weise, M. Bolte, J. van den Hoff, W. Burchert, G. Domik, E. Fricke, Zeitschrift Für Medizinische Physik 19 (2009) 182–188. date_created: 2021-04-25T17:06:55Z date_updated: 2022-01-06T06:55:13Z department: - _id: '65' doi: 10.1016/j.zemedi.2009.05.005 intvolume: ' 19' issue: '3' keyword: - Coronary artery disease - CT angiography - cardiac PET - quantitative perfusion measurement - Koronare Herzerkrankung - CT-Angiographie - PET - quantitative Perfusionsmessung language: - iso: eng page: 182-188 publication: Zeitschrift für Medizinische Physik publication_identifier: issn: - 0939-3889 status: public title: 'Quantitative myocardial perfusion PET combined with coronary anatomy derived from CT angiography: Validation of a new fusion and visualisation software' type: journal_article user_id: '14955' volume: 19 year: '2009' ... --- _id: '11723' abstract: - lang: eng text: In this paper we present a novel vehicle tracking algorithm, which is based on multi-level sensor fusion of GPS (global positioning system) with Inertial Measurement Unit sensor data. It is shown that the robustness of the system to temporary dropouts of the GPS signal, which may occur due to limited visibility of satellites in narrow street canyons or tunnels, is greatly improved by sensor fusion. We further demonstrate how the observation and state noise covariances of the employed Kalman filters can be estimated alongside the filtering by an application of the Expectation-Maximization algorithm. The proposed time-variant multi-level Kalman filter is shown to outperform an Interacting Multiple Model approach while at the same time being computationally less demanding. author: - first_name: Maik full_name: Bevermeier, Maik last_name: Bevermeier - first_name: Sven full_name: Peschke, Sven last_name: Peschke - first_name: Reinhold full_name: Haeb-Umbach, Reinhold id: '242' last_name: Haeb-Umbach citation: ama: 'Bevermeier M, Peschke S, Haeb-Umbach R. Robust vehicle localization based on multi-level sensor fusion and online parameter estimation. In: 6th Workshop on Positioning Navigation and Communication (WPNC 2009). ; 2009:235-242. doi:10.1109/WPNC.2009.4907833' apa: Bevermeier, M., Peschke, S., & Haeb-Umbach, R. (2009). Robust vehicle localization based on multi-level sensor fusion and online parameter estimation. In 6th Workshop on Positioning Navigation and Communication (WPNC 2009) (pp. 235–242). https://doi.org/10.1109/WPNC.2009.4907833 bibtex: '@inproceedings{Bevermeier_Peschke_Haeb-Umbach_2009, title={Robust vehicle localization based on multi-level sensor fusion and online parameter estimation}, DOI={10.1109/WPNC.2009.4907833}, booktitle={6th Workshop on Positioning Navigation and Communication (WPNC 2009)}, author={Bevermeier, Maik and Peschke, Sven and Haeb-Umbach, Reinhold}, year={2009}, pages={235–242} }' chicago: Bevermeier, Maik, Sven Peschke, and Reinhold Haeb-Umbach. “Robust Vehicle Localization Based on Multi-Level Sensor Fusion and Online Parameter Estimation.” In 6th Workshop on Positioning Navigation and Communication (WPNC 2009), 235–42, 2009. https://doi.org/10.1109/WPNC.2009.4907833. ieee: M. Bevermeier, S. Peschke, and R. Haeb-Umbach, “Robust vehicle localization based on multi-level sensor fusion and online parameter estimation,” in 6th Workshop on Positioning Navigation and Communication (WPNC 2009), 2009, pp. 235–242. mla: Bevermeier, Maik, et al. “Robust Vehicle Localization Based on Multi-Level Sensor Fusion and Online Parameter Estimation.” 6th Workshop on Positioning Navigation and Communication (WPNC 2009), 2009, pp. 235–42, doi:10.1109/WPNC.2009.4907833. short: 'M. Bevermeier, S. Peschke, R. Haeb-Umbach, in: 6th Workshop on Positioning Navigation and Communication (WPNC 2009), 2009, pp. 235–242.' date_created: 2019-07-12T05:27:01Z date_updated: 2022-01-06T06:51:07Z department: - _id: '54' doi: 10.1109/WPNC.2009.4907833 keyword: - covariance matrices - expectation-maximisation algorithm - expectation-maximization algorithm - global positioning system - Global Positioning System - GPS - inertial measurement unit - interacting multiple model approach - Kalman filters - multilevel sensor fusion - narrow street canyons - narrow tunnels - online parameter estimation - parameter estimation - road vehicles - robust vehicle localization - sensor fusion - state noise covariances - time-variant multilevel Kalman filter - vehicle tracking algorithm language: - iso: eng main_file_link: - open_access: '1' url: https://groups.uni-paderborn.de/nt/pubs/2009/BePeHa09.pdf oa: '1' page: 235-242 publication: 6th Workshop on Positioning Navigation and Communication (WPNC 2009) status: public title: Robust vehicle localization based on multi-level sensor fusion and online parameter estimation type: conference user_id: '44006' year: '2009' ... --- _id: '11724' abstract: - lang: eng text: In this paper we present a novel vehicle tracking method which is based on multi-stage Kalman filtering of GPS and IMU sensor data. After individual Kalman filtering of GPS and IMU measurements the estimates of the orientation of the vehicle are combined in an optimal manner to improve the robustness towards drift errors. The tracking algorithm incorporates the estimation of time-variant covariance parameters by using an iterative block Expectation-Maximization algorithm to account for time-variant driving conditions and measurement quality. The proposed system is compared to an interacting multiple model approach (IMM) and achieves improved localization accuracy at lower computational complexity. Furthermore we show how the joint parameter estimation and localizaiton can be conducted with streaming input data to be able to track vehicles in a real driving environment. author: - first_name: Maik full_name: Bevermeier, Maik last_name: Bevermeier - first_name: Sven full_name: Peschke, Sven last_name: Peschke - first_name: Reinhold full_name: Haeb-Umbach, Reinhold id: '242' last_name: Haeb-Umbach citation: ama: 'Bevermeier M, Peschke S, Haeb-Umbach R. Joint Parameter Estimation and Tracking in a Multi-Stage Kalman Filter for Vehicle Positioning. In: IEEE 69th Vehicular Technology Conference (VTC 2009 Spring). ; 2009:1-5. doi:10.1109/VETECS.2009.5073634' apa: Bevermeier, M., Peschke, S., & Haeb-Umbach, R. (2009). Joint Parameter Estimation and Tracking in a Multi-Stage Kalman Filter for Vehicle Positioning. In IEEE 69th Vehicular Technology Conference (VTC 2009 Spring) (pp. 1–5). https://doi.org/10.1109/VETECS.2009.5073634 bibtex: '@inproceedings{Bevermeier_Peschke_Haeb-Umbach_2009, title={Joint Parameter Estimation and Tracking in a Multi-Stage Kalman Filter for Vehicle Positioning}, DOI={10.1109/VETECS.2009.5073634}, booktitle={IEEE 69th Vehicular Technology Conference (VTC 2009 Spring)}, author={Bevermeier, Maik and Peschke, Sven and Haeb-Umbach, Reinhold}, year={2009}, pages={1–5} }' chicago: Bevermeier, Maik, Sven Peschke, and Reinhold Haeb-Umbach. “Joint Parameter Estimation and Tracking in a Multi-Stage Kalman Filter for Vehicle Positioning.” In IEEE 69th Vehicular Technology Conference (VTC 2009 Spring), 1–5, 2009. https://doi.org/10.1109/VETECS.2009.5073634. ieee: M. Bevermeier, S. Peschke, and R. Haeb-Umbach, “Joint Parameter Estimation and Tracking in a Multi-Stage Kalman Filter for Vehicle Positioning,” in IEEE 69th Vehicular Technology Conference (VTC 2009 Spring), 2009, pp. 1–5. mla: Bevermeier, Maik, et al. “Joint Parameter Estimation and Tracking in a Multi-Stage Kalman Filter for Vehicle Positioning.” IEEE 69th Vehicular Technology Conference (VTC 2009 Spring), 2009, pp. 1–5, doi:10.1109/VETECS.2009.5073634. short: 'M. Bevermeier, S. Peschke, R. Haeb-Umbach, in: IEEE 69th Vehicular Technology Conference (VTC 2009 Spring), 2009, pp. 1–5.' date_created: 2019-07-12T05:27:02Z date_updated: 2022-01-06T06:51:07Z department: - _id: '54' doi: 10.1109/VETECS.2009.5073634 keyword: - computational complexity - expectation-maximisation algorithm - Global Positioning System - inertial measurement unit - inertial navigation - interacting multiple model - iterative block expectation-maximization algorithm - Kalman filters - multi-stage Kalman filter - parameter estimation - road vehicles - vehicle positioning - vehicle tracking language: - iso: eng main_file_link: - open_access: '1' url: https://groups.uni-paderborn.de/nt/pubs/2009/BePeHa09-1.pdf oa: '1' page: 1-5 publication: IEEE 69th Vehicular Technology Conference (VTC 2009 Spring) status: public title: Joint Parameter Estimation and Tracking in a Multi-Stage Kalman Filter for Vehicle Positioning type: conference user_id: '44006' year: '2009' ... --- _id: '11881' abstract: - lang: eng text: A combination of GPS (global positioning system) and INS (inertial navigation system) is known to provide high precision and highly robust vehicle localization. Notably during times when the GPS signal has a poor quality, e.g. due to the lack of a sufficiently large number of visible satellites, the INS, which may consist of a gyroscope and an odometer, will lead to improved positioning accuracy. In this paper we show how velocity information obtained from GSM (global system for mobile communications) signalling, rather than from a tachometer, can be used together with a gyroscope sensor to support localization in the presence of temporarily unavailable GPS data. We propose a sensor fusion system architecture and present simulation results that show the effectiveness of this approach. author: - first_name: Sven full_name: Peschke, Sven last_name: Peschke - first_name: Maik full_name: Bevermeier, Maik last_name: Bevermeier - first_name: Reinhold full_name: Haeb-Umbach, Reinhold id: '242' last_name: Haeb-Umbach citation: ama: 'Peschke S, Bevermeier M, Haeb-Umbach R. A GPS positioning approach exploiting GSM velocity estimates. In: 6th Workshop on Positioning Navigation and Communication (WPNC 2009). ; 2009:195-202. doi:10.1109/WPNC.2009.4907827' apa: Peschke, S., Bevermeier, M., & Haeb-Umbach, R. (2009). A GPS positioning approach exploiting GSM velocity estimates. In 6th Workshop on Positioning Navigation and Communication (WPNC 2009) (pp. 195–202). https://doi.org/10.1109/WPNC.2009.4907827 bibtex: '@inproceedings{Peschke_Bevermeier_Haeb-Umbach_2009, title={A GPS positioning approach exploiting GSM velocity estimates}, DOI={10.1109/WPNC.2009.4907827}, booktitle={6th Workshop on Positioning Navigation and Communication (WPNC 2009)}, author={Peschke, Sven and Bevermeier, Maik and Haeb-Umbach, Reinhold}, year={2009}, pages={195–202} }' chicago: Peschke, Sven, Maik Bevermeier, and Reinhold Haeb-Umbach. “A GPS Positioning Approach Exploiting GSM Velocity Estimates.” In 6th Workshop on Positioning Navigation and Communication (WPNC 2009), 195–202, 2009. https://doi.org/10.1109/WPNC.2009.4907827. ieee: S. Peschke, M. Bevermeier, and R. Haeb-Umbach, “A GPS positioning approach exploiting GSM velocity estimates,” in 6th Workshop on Positioning Navigation and Communication (WPNC 2009), 2009, pp. 195–202. mla: Peschke, Sven, et al. “A GPS Positioning Approach Exploiting GSM Velocity Estimates.” 6th Workshop on Positioning Navigation and Communication (WPNC 2009), 2009, pp. 195–202, doi:10.1109/WPNC.2009.4907827. short: 'S. Peschke, M. Bevermeier, R. Haeb-Umbach, in: 6th Workshop on Positioning Navigation and Communication (WPNC 2009), 2009, pp. 195–202.' date_created: 2019-07-12T05:30:04Z date_updated: 2022-01-06T06:51:11Z department: - _id: '54' doi: 10.1109/WPNC.2009.4907827 keyword: - cellular radio - distance measurement - global positioning system - Global Positioning System - global system for mobile communications - GPS positioning approach - GSM velocity - gyroscopes - gyroscope sensor - inertial navigation - inertial navigation system - odometer - sensor fusion system architecture - sensors language: - iso: eng main_file_link: - open_access: '1' url: https://groups.uni-paderborn.de/nt/pubs/2009/PeBeHa09-1.pdf oa: '1' page: 195-202 publication: 6th Workshop on Positioning Navigation and Communication (WPNC 2009) status: public title: A GPS positioning approach exploiting GSM velocity estimates type: conference user_id: '44006' year: '2009' ... --- _id: '9568' abstract: - lang: eng text: A simple pre-stress estimate method of Langevin transducers is studied. The measurement setup consists of a capacitor, an impedance converter and a voltmeter. Based on the piezoelectric equation and the basic circuit theory, the mathematical expression between the pre-stress and the voltage across the capacitor is derived. The pre-stress level can then be calculated out of the measurement of the capacitor voltage. In order to evaluate the precision of this method, a force washer is used to measure the pre-stress of the Langevin transducer. The result shows the pre-stress level obtained from this method is 30-40\% higher than the pre-stress level measured by the force washer. This method is simple and can be used to estimate the pre-stress of various Langevin transducers. The precision of this method can be raised if d33 is identified under different pre-stress levels. author: - first_name: Fu full_name: Bo, Fu last_name: Bo - first_name: Li full_name: Ting, Li last_name: Ting - first_name: Tobias full_name: Hemsel, Tobias id: '210' last_name: Hemsel citation: ama: 'Bo F, Ting L, Hemsel T. A simple pre-stress estimating method of langevin transducers. In: Piezoelectricity, Acoustic Waves, and Device Applications, 2008. SPAWDA 2008. Symposium On. ; 2008:324-327. doi:10.1109/SPAWDA.2008.4775801' apa: Bo, F., Ting, L., & Hemsel, T. (2008). A simple pre-stress estimating method of langevin transducers. In Piezoelectricity, Acoustic Waves, and Device Applications, 2008. SPAWDA 2008. Symposium on (pp. 324–327). https://doi.org/10.1109/SPAWDA.2008.4775801 bibtex: '@inproceedings{Bo_Ting_Hemsel_2008, title={A simple pre-stress estimating method of langevin transducers}, DOI={10.1109/SPAWDA.2008.4775801}, booktitle={Piezoelectricity, Acoustic Waves, and Device Applications, 2008. SPAWDA 2008. Symposium on}, author={Bo, Fu and Ting, Li and Hemsel, Tobias}, year={2008}, pages={324–327} }' chicago: Bo, Fu, Li Ting, and Tobias Hemsel. “A Simple Pre-Stress Estimating Method of Langevin Transducers.” In Piezoelectricity, Acoustic Waves, and Device Applications, 2008. SPAWDA 2008. Symposium On, 324–27, 2008. https://doi.org/10.1109/SPAWDA.2008.4775801. ieee: F. Bo, L. Ting, and T. Hemsel, “A simple pre-stress estimating method of langevin transducers,” in Piezoelectricity, Acoustic Waves, and Device Applications, 2008. SPAWDA 2008. Symposium on, 2008, pp. 324–327. mla: Bo, Fu, et al. “A Simple Pre-Stress Estimating Method of Langevin Transducers.” Piezoelectricity, Acoustic Waves, and Device Applications, 2008. SPAWDA 2008. Symposium On, 2008, pp. 324–27, doi:10.1109/SPAWDA.2008.4775801. short: 'F. Bo, L. Ting, T. Hemsel, in: Piezoelectricity, Acoustic Waves, and Device Applications, 2008. SPAWDA 2008. Symposium On, 2008, pp. 324–327.' date_created: 2019-04-29T11:16:13Z date_updated: 2022-01-06T07:04:16Z department: - _id: '151' doi: 10.1109/SPAWDA.2008.4775801 keyword: - capacitors - impedance convertors - piezoelectric transducers - stress analysis - Langevin transducers - basic circuit theory - capacitor - impedance converter - piezoelectric equation - pre-stress estimating method - voltmeter - Capacitors - Educational institutions - Equations - Force measurement - Impedance measurement - Manufacturing - Mechatronics - Piezoelectric transducers - Voltage - Voltmeters - Langevin transducer - capacitor - piezoelectric element - pre-stress language: - iso: eng page: 324-327 publication: Piezoelectricity, Acoustic Waves, and Device Applications, 2008. SPAWDA 2008. Symposium on status: public title: A simple pre-stress estimating method of langevin transducers type: conference user_id: '55222' year: '2008' ... --- _id: '9576' 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.' author: - first_name: David Oliva full_name: Uribe, David Oliva last_name: Uribe - first_name: Ralf full_name: Stroop, Ralf last_name: Stroop - first_name: Tobias full_name: Hemsel, Tobias id: '210' last_name: Hemsel - first_name: Jörg full_name: Wallaschek, Jörg last_name: Wallaschek citation: ama: 'Uribe DO, Stroop R, Hemsel T, Wallaschek J. Development of a biomedical tissue differentiation system using piezoelectric actuators. In: Frequency Control Symposium, 2008 IEEE International. ; 2008:91-94. doi:10.1109/FREQ.2008.4622963' apa: Uribe, D. O., Stroop, R., Hemsel, T., & Wallaschek, J. (2008). Development of a biomedical tissue differentiation system using piezoelectric actuators. In Frequency Control Symposium, 2008 IEEE International (pp. 91–94). https://doi.org/10.1109/FREQ.2008.4622963 bibtex: '@inproceedings{Uribe_Stroop_Hemsel_Wallaschek_2008, title={Development of a biomedical tissue differentiation system using piezoelectric actuators}, DOI={10.1109/FREQ.2008.4622963}, 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} }' chicago: Uribe, David Oliva, Ralf Stroop, Tobias Hemsel, and Jörg Wallaschek. “Development of a Biomedical Tissue Differentiation System Using Piezoelectric Actuators.” In Frequency Control Symposium, 2008 IEEE International, 91–94, 2008. https://doi.org/10.1109/FREQ.2008.4622963. ieee: D. O. Uribe, R. Stroop, T. Hemsel, and J. Wallaschek, “Development of a biomedical tissue differentiation system using piezoelectric actuators,” in Frequency Control Symposium, 2008 IEEE International, 2008, pp. 91–94. mla: Uribe, David Oliva, et al. “Development of a Biomedical Tissue Differentiation System Using Piezoelectric Actuators.” Frequency Control Symposium, 2008 IEEE International, 2008, pp. 91–94, doi:10.1109/FREQ.2008.4622963. short: 'D.O. Uribe, R. Stroop, T. Hemsel, J. Wallaschek, in: Frequency Control Symposium, 2008 IEEE International, 2008, pp. 91–94.' date_created: 2019-04-29T13:07:39Z date_updated: 2022-01-06T07:04:16Z department: - _id: '151' doi: 10.1109/FREQ.2008.4622963 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 language: - iso: eng page: 91-94 publication: Frequency Control Symposium, 2008 IEEE International publication_identifier: issn: - 1075-6787 quality_controlled: '1' status: public title: Development of a biomedical tissue differentiation system using piezoelectric actuators type: conference user_id: '55222' year: '2008' ...