[{"year":"2025","citation":{"mla":"Moritzer, Elmar, and Kai Lingnau. “PROCESS DEVELOPMENT OF A POWDER-BASED DIRECT COATING IN THE INJECTION MOLDING PROCESS.” <i>Annual Technical Conference of the Society of Plastics Engineers (ANTEC 2025)</i>, 2025.","bibtex":"@inproceedings{Moritzer_Lingnau_2025, title={PROCESS DEVELOPMENT OF A POWDER-BASED DIRECT COATING IN THE INJECTION MOLDING PROCESS}, booktitle={Annual Technical Conference of the Society of Plastics Engineers (ANTEC 2025)}, author={Moritzer, Elmar and Lingnau, Kai}, year={2025} }","short":"E. Moritzer, K. Lingnau, in: Annual Technical Conference of the Society of Plastics Engineers (ANTEC 2025), 2025.","apa":"Moritzer, E., &#38; Lingnau, K. (2025). PROCESS DEVELOPMENT OF A POWDER-BASED DIRECT COATING IN THE INJECTION MOLDING PROCESS. <i>Annual Technical Conference of the Society of Plastics Engineers (ANTEC 2025)</i>.","chicago":"Moritzer, Elmar, and Kai Lingnau. “PROCESS DEVELOPMENT OF A POWDER-BASED DIRECT COATING IN THE INJECTION MOLDING PROCESS.” In <i>Annual Technical Conference of the Society of Plastics Engineers (ANTEC 2025)</i>, 2025.","ieee":"E. Moritzer and K. Lingnau, “PROCESS DEVELOPMENT OF A POWDER-BASED DIRECT COATING IN THE INJECTION MOLDING PROCESS,” 2025.","ama":"Moritzer E, Lingnau K. PROCESS DEVELOPMENT OF A POWDER-BASED DIRECT COATING IN THE INJECTION MOLDING PROCESS. In: <i>Annual Technical Conference of the Society of Plastics Engineers (ANTEC 2025)</i>. ; 2025."},"quality_controlled":"1","title":"PROCESS DEVELOPMENT OF A POWDER-BASED DIRECT COATING IN THE INJECTION MOLDING PROCESS","date_updated":"2026-01-05T12:15:40Z","date_created":"2026-01-05T08:42:56Z","author":[{"last_name":"Moritzer","id":"20531","full_name":"Moritzer, Elmar","first_name":"Elmar"},{"last_name":"Lingnau","full_name":"Lingnau, Kai","first_name":"Kai"}],"status":"public","type":"conference","publication":"Annual Technical Conference of the Society of Plastics Engineers (ANTEC 2025)","keyword":["Lackierung","Pulverlack","Spritzgießen"],"language":[{"iso":"eng"}],"_id":"63443","user_id":"59363","department":[{"_id":"9"},{"_id":"321"},{"_id":"367"}]},{"abstract":[{"text":"The famous $k$-Server Problem covers plenty of resource allocation scenarios, and several variations have been studied extensively for decades. However, to the best of our knowledge, no research has considered the problem if the servers are not identical and requests can express which specific servers should serve them. Therefore, we present a new model generalizing the $k$-Server Problem by *preferences* of the requests and proceed to study it in a uniform metric space for deterministic online algorithms (the special case of paging).\r\n\r\nIn our model, requests can either demand to be answered by any server (*general requests*) or by a specific one (*specific requests*). If only general requests appear, the instance is one of the original $k$-Server Problem, and a lower bound for the competitive ratio of $k$ applies. If only specific requests appear, a solution with a competitive ratio of $1$ becomes trivial since there is no freedom regarding the servers' movements. Perhaps counter-intuitively, we show that if both kinds of requests appear, the lower bound raises to $2k-1$.\r\n\r\nWe study deterministic online algorithms in uniform metrics and present two algorithms. The first one has an adaptive competitive ratio dependent on the frequency of specific requests. It achieves a worst-case competitive ratio of $3k-2$ while it is optimal when only general or only specific requests appear (competitive ratio of $k$ and $1$, respectively). The second has a fixed close-to-optimal worst-case competitive ratio of $2k+14$. For the first algorithm, we show a lower bound of $3k-2$, while the second algorithm has a lower bound of $2k-1$ when only general requests appear.\r\n    \r\nThe two algorithms differ in only one behavioral rule for each server that significantly influences the competitive ratio. Each server acting according to the rule allows approaching the worst-case lower bound, while it implies an increased lower bound for $k$-Server instances. In other words, there is a trade-off between performing well against instances of the $k$-Server Problem and instances containing specific requests. We also show that no deterministic online algorithm can be optimal for both kinds of instances simultaneously.","lang":"eng"}],"publication":"Proceedings of the 34th ACM Symposium on Parallelism in Algorithms and Architectures","language":[{"iso":"eng"}],"keyword":["K-Server Problem","Heterogeneity","Online Caching"],"external_id":{"arxiv":["2205.11102"]},"year":"2022","title":"The k-Server with Preferences Problem","date_created":"2022-06-10T09:06:42Z","publisher":"Association for Computing Machinery","status":"public","type":"conference","department":[{"_id":"63"}],"user_id":"39241","_id":"31847","project":[{"_id":"1","name":"SFB 901: SFB 901"},{"_id":"2","name":"SFB 901 - A: SFB 901 - Project Area A"},{"name":"SFB 901 - A1: SFB 901 - Subproject A1","_id":"5"}],"page":"345-356","citation":{"mla":"Castenow, Jannik, et al. “The K-Server with Preferences Problem.” <i>Proceedings of the 34th ACM Symposium on Parallelism in Algorithms and Architectures</i>, Association for Computing Machinery, 2022, pp. 345–56, doi:<a href=\"https://doi.org/10.1145/3490148.3538595\">10.1145/3490148.3538595</a>.","bibtex":"@inproceedings{Castenow_Feldkord_Knollmann_Malatyali_Meyer auf der Heide_2022, title={The k-Server with Preferences Problem}, DOI={<a href=\"https://doi.org/10.1145/3490148.3538595\">10.1145/3490148.3538595</a>}, booktitle={Proceedings of the 34th ACM Symposium on Parallelism in Algorithms and Architectures}, publisher={Association for Computing Machinery}, author={Castenow, Jannik and Feldkord, Björn and Knollmann, Till and Malatyali, Manuel and Meyer auf der Heide, Friedhelm}, year={2022}, pages={345–356} }","short":"J. Castenow, B. Feldkord, T. Knollmann, M. Malatyali, F. Meyer auf der Heide, in: Proceedings of the 34th ACM Symposium on Parallelism in Algorithms and Architectures, Association for Computing Machinery, 2022, pp. 345–356.","apa":"Castenow, J., Feldkord, B., Knollmann, T., Malatyali, M., &#38; Meyer auf der Heide, F. (2022). The k-Server with Preferences Problem. <i>Proceedings of the 34th ACM Symposium on Parallelism in Algorithms and Architectures</i>, 345–356. <a href=\"https://doi.org/10.1145/3490148.3538595\">https://doi.org/10.1145/3490148.3538595</a>","ieee":"J. Castenow, B. Feldkord, T. Knollmann, M. Malatyali, and F. Meyer auf der Heide, “The k-Server with Preferences Problem,” in <i>Proceedings of the 34th ACM Symposium on Parallelism in Algorithms and Architectures</i>, 2022, pp. 345–356, doi: <a href=\"https://doi.org/10.1145/3490148.3538595\">10.1145/3490148.3538595</a>.","chicago":"Castenow, Jannik, Björn Feldkord, Till Knollmann, Manuel Malatyali, and Friedhelm Meyer auf der Heide. “The K-Server with Preferences Problem.” In <i>Proceedings of the 34th ACM Symposium on Parallelism in Algorithms and Architectures</i>, 345–56. Association for Computing Machinery, 2022. <a href=\"https://doi.org/10.1145/3490148.3538595\">https://doi.org/10.1145/3490148.3538595</a>.","ama":"Castenow J, Feldkord B, Knollmann T, Malatyali M, Meyer auf der Heide F. The k-Server with Preferences Problem. In: <i>Proceedings of the 34th ACM Symposium on Parallelism in Algorithms and Architectures</i>. Association for Computing Machinery; 2022:345-356. doi:<a href=\"https://doi.org/10.1145/3490148.3538595\">10.1145/3490148.3538595</a>"},"publication_identifier":{"isbn":["9781450391467"]},"doi":"10.1145/3490148.3538595","author":[{"first_name":"Jannik","last_name":"Castenow","full_name":"Castenow, Jannik","id":"38705"},{"first_name":"Björn","last_name":"Feldkord","full_name":"Feldkord, Björn","id":"22704"},{"id":"39241","full_name":"Knollmann, Till","last_name":"Knollmann","orcid":"0000-0003-2014-4696","first_name":"Till"},{"first_name":"Manuel","full_name":"Malatyali, Manuel","id":"41265","last_name":"Malatyali"},{"first_name":"Friedhelm","full_name":"Meyer auf der Heide, Friedhelm","id":"15523","last_name":"Meyer auf der Heide"}],"date_updated":"2022-08-02T08:07:30Z"},{"citation":{"ieee":"J. Huber, <i>Beitrag zur Reduzierung der Fehlerhäufigkeit bei der Online-Lackierung von SMC-Außenhautbauteilen</i>, vol. 2021,50. Shaker Verlag, 2021.","chicago":"Huber, Johannes. <i>Beitrag zur Reduzierung der Fehlerhäufigkeit bei der Online-Lackierung von SMC-Außenhautbauteilen</i>. Vol. 2021,50. Schriftenreihe Institut für Leichtbau mit Hybridsystemen. Shaker Verlag, 2021.","ama":"Huber J. <i>Beitrag zur Reduzierung der Fehlerhäufigkeit bei der Online-Lackierung von SMC-Außenhautbauteilen</i>. Vol 2021,50. Shaker Verlag; 2021.","apa":"Huber, J. (2021). <i>Beitrag zur Reduzierung der Fehlerhäufigkeit bei der Online-Lackierung von SMC-Außenhautbauteilen: Vol. 2021,50</i>. Shaker Verlag.","mla":"Huber, Johannes. <i>Beitrag zur Reduzierung der Fehlerhäufigkeit bei der Online-Lackierung von SMC-Außenhautbauteilen</i>. Shaker Verlag, 2021.","short":"J. Huber, Beitrag zur Reduzierung der Fehlerhäufigkeit bei der Online-Lackierung von SMC-Außenhautbauteilen, Shaker Verlag, 2021.","bibtex":"@book{Huber_2021, series={Schriftenreihe Institut für Leichtbau mit Hybridsystemen}, title={Beitrag zur Reduzierung der Fehlerhäufigkeit bei der Online-Lackierung von SMC-Außenhautbauteilen}, volume={2021,50}, publisher={Shaker Verlag}, author={Huber, Johannes}, year={2021}, collection={Schriftenreihe Institut für Leichtbau mit Hybridsystemen} }"},"page":"194","year":"2021","publication_status":"published","publication_identifier":{"isbn":["978-3-8440-8222-7"]},"title":"Beitrag zur Reduzierung der Fehlerhäufigkeit bei der Online-Lackierung von SMC-Außenhautbauteilen","supervisor":[{"first_name":"Thomas","last_name":"Tröster","full_name":"Tröster, Thomas","id":"553"}],"date_created":"2023-01-19T11:56:43Z","author":[{"full_name":"Huber, Johannes","last_name":"Huber","first_name":"Johannes"}],"volume":"2021,50","publisher":"Shaker Verlag","date_updated":"2023-01-19T11:56:48Z","status":"public","abstract":[{"lang":"ger","text":"Der Verbau von Sheet Moulding Compounds im automobilen Außenhautbereich führt in der industriellen Praxis regelmäßig zu abnehmenden Direktläuferquoten in der Technologie Oberfläche, denn neben bekannten Lackierfehlern ergeben sich auch werkstoff-spezifische Oberflächendefekte, welche einen Bauteilwechsel bedingen. Die hier vorliegende Arbeit soll einen aktiven Beitrag zur Reduzierung von Ausschuss und Nacharbeit entlang der Lackierprozesskette leisten. Zu Beginn werden die erfolgskritischen Oberflächendefekte identifiziert und die zugehörigen Fehlerursachen ermittelt, ehe anschließend die Entwicklung der Fehlstellengrößen in Folge der Temperaturbelastung während der Trocknerdurchfahrten untersucht wird. Ferner soll die Auswirkung einer zusätzlich applizierten Oberflächengrundierung auf die Fehlerhäufigkeit sowie die Oberflächengüte im decklackierten Zustand geprüft werden. Als weitere Möglichkeit zur Problemlösung wird eine in den Prozessablauf integrierte Qualitätskontrolle gesehen, weshalb in dieser Arbeit ebenso die Eignung bekannter zerstörungsfreier Prüfmethoden für die präventive Fehlererkennung überprüft und ein zweistufiges Prüfkonzept erarbeitet wird. Das Aufzeigen möglicher Handlungsalternativen sowie die kostentechnische Gegenüberstellung der verschiedenen Anbauvarianten runden die Arbeit ab."}],"type":"dissertation","language":[{"iso":"ger"}],"keyword":["Sheet Moulding Compounds","SMC","Online-Lackierung"],"series_title":"Schriftenreihe Institut für Leichtbau mit Hybridsystemen","user_id":"15952","department":[{"_id":"9"},{"_id":"149"},{"_id":"321"}],"_id":"37586"},{"conference":{"location":"Online Streaming","end_date":"2021-04-30","start_date":"2021-04-28","name":"7th International Conference on Vehicle Technology and Intelligent Transport Systems"},"main_file_link":[{"url":"https://www.scitepress.org/PublicationsDetail.aspx?ID=3xZWfOSENWk=&t=1"}],"date_updated":"2026-01-26T08:49:53Z","volume":7,"author":[{"first_name":"Kevin","full_name":"Malena, Kevin","id":"36303","orcid":"0000-0003-1183-4679","last_name":"Malena"},{"first_name":"Christopher","last_name":"Link","id":"38249","full_name":"Link, Christopher"},{"last_name":"Mertin","full_name":"Mertin, Sven","id":"13195","first_name":"Sven"},{"full_name":"Gausemeier, Sandra","id":"17793","last_name":"Gausemeier","first_name":"Sandra"},{"first_name":"Ansgar","last_name":"Trächtler","id":"552","full_name":"Trächtler, Ansgar"}],"place":"Portugal","page":"386-395","intvolume":"         7","citation":{"bibtex":"@inproceedings{Malena_Link_Mertin_Gausemeier_Trächtler_2021, place={Portugal}, series={VEHITS 2021 Proceedings of the 7th International Conference on Vehicle Technology and Intelligent Transport Systems}, title={Online State Estimation for Microscopic Traffic Simulations using Multiple Data Sources*}, volume={7}, booktitle={VEHITS 2021 Proceedings of the 7th International Conference on Vehicle Technology and Intelligent Transport Systems}, publisher={SCITEPRESS}, author={Malena, Kevin and Link, Christopher and Mertin, Sven and Gausemeier, Sandra and Trächtler, Ansgar}, year={2021}, pages={386–395}, collection={VEHITS 2021 Proceedings of the 7th International Conference on Vehicle Technology and Intelligent Transport Systems} }","mla":"Malena, Kevin, et al. “Online State Estimation for Microscopic Traffic Simulations Using Multiple Data Sources*.” <i>VEHITS 2021 Proceedings of the 7th International Conference on Vehicle Technology and Intelligent Transport Systems</i>, vol. 7, SCITEPRESS, 2021, pp. 386–95.","short":"K. Malena, C. Link, S. Mertin, S. Gausemeier, A. Trächtler, in: VEHITS 2021 Proceedings of the 7th International Conference on Vehicle Technology and Intelligent Transport Systems, SCITEPRESS, Portugal, 2021, pp. 386–395.","apa":"Malena, K., Link, C., Mertin, S., Gausemeier, S., &#38; Trächtler, A. (2021). Online State Estimation for Microscopic Traffic Simulations using Multiple Data Sources*. <i>VEHITS 2021 Proceedings of the 7th International Conference on Vehicle Technology and Intelligent Transport Systems</i>, <i>7</i>, 386–395.","ama":"Malena K, Link C, Mertin S, Gausemeier S, Trächtler A. Online State Estimation for Microscopic Traffic Simulations using Multiple Data Sources*. In: <i>VEHITS 2021 Proceedings of the 7th International Conference on Vehicle Technology and Intelligent Transport Systems</i>. Vol 7. VEHITS 2021 Proceedings of the 7th International Conference on Vehicle Technology and Intelligent Transport Systems. SCITEPRESS; 2021:386-395.","chicago":"Malena, Kevin, Christopher Link, Sven Mertin, Sandra Gausemeier, and Ansgar Trächtler. “Online State Estimation for Microscopic Traffic Simulations Using Multiple Data Sources*.” In <i>VEHITS 2021 Proceedings of the 7th International Conference on Vehicle Technology and Intelligent Transport Systems</i>, 7:386–95. VEHITS 2021 Proceedings of the 7th International Conference on Vehicle Technology and Intelligent Transport Systems. Portugal: SCITEPRESS, 2021.","ieee":"K. Malena, C. Link, S. Mertin, S. Gausemeier, and A. Trächtler, “Online State Estimation for Microscopic Traffic Simulations using Multiple Data Sources*,” in <i>VEHITS 2021 Proceedings of the 7th International Conference on Vehicle Technology and Intelligent Transport Systems</i>, Online Streaming, 2021, vol. 7, pp. 386–395."},"publication_identifier":{"isbn":["978-989-758-513-5"]},"publication_status":"published","related_material":{"link":[{"relation":"confirmation","url":"https://www.scitepress.org/PublicationsDetail.aspx?ID=3xZWfOSENWk=&t=1"}],"record":[{"status":"public","relation":"is_continued_by","id":"33849"}]},"_id":"24159","project":[{"_id":"688","name":"Pilotprojekt \"Schlosskreuzung\""}],"department":[{"_id":"153"}],"series_title":"VEHITS 2021 Proceedings of the 7th International Conference on Vehicle Technology and Intelligent Transport Systems","user_id":"36303","status":"public","type":"conference","title":"Online State Estimation for Microscopic Traffic Simulations using Multiple Data Sources*","publisher":"SCITEPRESS","date_created":"2021-09-10T12:19:14Z","year":"2021","quality_controlled":"1","keyword":["Microscopic Traffic Simulation","Online State Estimation","Mixed Road Users","Sensor Fusion","Integer Programming","Route Choice","Vehicle2Infrastructure"],"language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"The online fitting of a microscopic traffic simulation model to reconstruct the current state of a real traffic\r\narea can be challenging depending on the provided data. This paper presents a novel method based on limited\r\ndata from sensors positioned at specific locations and guarantees a general accordance of reality and\r\nsimulation in terms of multimodal road traffic counts and vehicle speeds. In these considerations, the actual\r\npurpose of research is of particular importance. Here, the research aims at improving the traffic flow by\r\ncontrolling the Traffic Light Systems (TLS) of the examined area which is why the current traffic state and\r\nthe route choices of individual road users are the matter of interest. An integer optimization problem is derived\r\nto fit the current simulation to the latest field measurements. The concept can be transferred to any road traffic\r\nnetwork and results in an observation of the current multimodal traffic state matching at the given sensor\r\nposition. First case studies show promosing results in terms of deviations between reality and simulation."}],"publication":"VEHITS 2021 Proceedings of the 7th International Conference on Vehicle Technology and Intelligent Transport Systems"},{"status":"public","type":"conference","file_date_updated":"2020-07-14T07:56:52Z","_id":"17370","project":[{"_id":"1","name":"SFB 901"},{"name":"SFB 901 - Project Area A","_id":"2"},{"_id":"5","name":"SFB 901 - Subproject A1"}],"department":[{"_id":"63"}],"user_id":"39241","citation":{"ieee":"J. Castenow, B. Feldkord, T. Knollmann, M. Malatyali, and F. Meyer auf der Heide, “The Online Multi-Commodity Facility Location Problem,” in <i>Proceedings of the 32nd ACM Symposium on Parallelism in Algorithms and Architectures</i>, 2020.","chicago":"Castenow, Jannik, Björn Feldkord, Till Knollmann, Manuel Malatyali, and Friedhelm Meyer auf der Heide. “The Online Multi-Commodity Facility Location Problem.” In <i>Proceedings of the 32nd ACM Symposium on Parallelism in Algorithms and Architectures</i>, 2020. <a href=\"https://doi.org/10.1145/3350755.3400281\">https://doi.org/10.1145/3350755.3400281</a>.","ama":"Castenow J, Feldkord B, Knollmann T, Malatyali M, Meyer auf der Heide F. The Online Multi-Commodity Facility Location Problem. In: <i>Proceedings of the 32nd ACM Symposium on Parallelism in Algorithms and Architectures</i>. ; 2020. doi:<a href=\"https://doi.org/10.1145/3350755.3400281\">10.1145/3350755.3400281</a>","short":"J. Castenow, B. Feldkord, T. Knollmann, M. Malatyali, F. Meyer auf der Heide, in: Proceedings of the 32nd ACM Symposium on Parallelism in Algorithms and Architectures, 2020.","mla":"Castenow, Jannik, et al. “The Online Multi-Commodity Facility Location Problem.” <i>Proceedings of the 32nd ACM Symposium on Parallelism in Algorithms and Architectures</i>, 2020, doi:<a href=\"https://doi.org/10.1145/3350755.3400281\">10.1145/3350755.3400281</a>.","bibtex":"@inproceedings{Castenow_Feldkord_Knollmann_Malatyali_Meyer auf der Heide_2020, title={The Online Multi-Commodity Facility Location Problem}, DOI={<a href=\"https://doi.org/10.1145/3350755.3400281\">10.1145/3350755.3400281</a>}, booktitle={Proceedings of the 32nd ACM Symposium on Parallelism in Algorithms and Architectures}, author={Castenow, Jannik and Feldkord, Björn and Knollmann, Till and Malatyali, Manuel and Meyer auf der Heide, Friedhelm}, year={2020} }","apa":"Castenow, J., Feldkord, B., Knollmann, T., Malatyali, M., &#38; Meyer auf der Heide, F. (2020). The Online Multi-Commodity Facility Location Problem. In <i>Proceedings of the 32nd ACM Symposium on Parallelism in Algorithms and Architectures</i>. <a href=\"https://doi.org/10.1145/3350755.3400281\">https://doi.org/10.1145/3350755.3400281</a>"},"publication_identifier":{"isbn":["9781450369350"]},"has_accepted_license":"1","publication_status":"published","doi":"10.1145/3350755.3400281","date_updated":"2022-01-06T06:53:10Z","author":[{"full_name":"Castenow, Jannik","id":"38705","last_name":"Castenow","first_name":"Jannik"},{"first_name":"Björn","last_name":"Feldkord","full_name":"Feldkord, Björn","id":"22704"},{"full_name":"Knollmann, Till","id":"39241","orcid":"0000-0003-2014-4696","last_name":"Knollmann","first_name":"Till"},{"last_name":"Malatyali","full_name":"Malatyali, Manuel","first_name":"Manuel"},{"full_name":"Meyer auf der Heide, Friedhelm","id":"15523","last_name":"Meyer auf der Heide","first_name":"Friedhelm"}],"abstract":[{"lang":"eng","text":" We consider a natural extension to the metric uncapacitated Facility Location Problem (FLP) in which requests ask for different commodities out of a finite set \\( S \\) of commodities.\r\n  Ravi and Sinha (SODA 2004) introduced the model as the \\emph{Multi-Commodity Facility Location Problem} (MFLP) and considered it an offline optimization problem.\r\n  The model itself is similar to the FLP: i.e., requests are located at points of a finite metric space and the task of an algorithm is to construct facilities and assign requests to facilities while minimizing the construction cost and the sum over all assignment distances.\r\n  In addition, requests and facilities are heterogeneous; they request or offer multiple commodities out of $S$.\r\n  A request has to be connected to a set of facilities jointly offering the commodities demanded by it.\r\n  In comparison to the FLP, an algorithm has to decide not only if and where to place facilities, but also which commodities to offer at each.\r\n\r\n  To the best of our knowledge we are the first to study the problem in its online variant in which requests, their positions and their commodities are not known beforehand but revealed over time.\r\n  We present results regarding the competitive ratio.\r\n  On the one hand, we show that heterogeneity influences the competitive ratio by developing a lower bound on the competitive ratio for any randomized online algorithm of \\( \\Omega (  \\sqrt{|S|} + \\frac{\\log n}{\\log \\log n}  ) \\) that already holds for simple line metrics.\r\n  Here, \\( n \\) is the number of requests.\r\n  On the other side, we establish a deterministic \\( \\mathcal{O}(\\sqrt{|S|} \\cdot \\log n) \\)-competitive algorithm and a randomized \\( \\mathcal{O}(\\sqrt{|S|} \\cdot \\frac{\\log n}{\\log \\log n} ) \\)-competitive algorithm.\r\n  Further, we show that when considering a more special class of cost functions for the construction cost of a facility, the competitive ratio decreases given by our deterministic algorithm depending on the function."}],"file":[{"content_type":"application/pdf","relation":"main_file","success":1,"date_created":"2020-07-14T07:56:52Z","creator":"tillk","date_updated":"2020-07-14T07:56:52Z","file_id":"17373","file_name":"3350755.3400281.pdf","access_level":"closed","file_size":1271416}],"publication":"Proceedings of the 32nd ACM Symposium on Parallelism in Algorithms and Architectures","keyword":["Online Multi-Commodity Facility Location","Competitive Ratio","Online Optimization","Facility Location Problem"],"ddc":["000"],"language":[{"iso":"eng"}],"external_id":{"arxiv":["2005.08391"]},"year":"2020","title":"The Online Multi-Commodity Facility Location Problem","date_created":"2020-07-14T07:53:20Z"},{"citation":{"mla":"Kersting, Joschka, and Michaela Geierhos. “What Reviews in Local Online Labour Markets Reveal about the Performance of Multi-Service Providers.” <i>Proceedings of the 9th International Conference on Pattern Recognition Applications and Methods</i>, SCITEPRESS, 2020, pp. 263--272.","bibtex":"@inproceedings{Kersting_Geierhos_2020, place={Setúbal, Portugal}, title={What Reviews in Local Online Labour Markets Reveal about the Performance of Multi-Service Providers}, booktitle={Proceedings of the 9th International Conference on Pattern Recognition Applications and Methods}, publisher={SCITEPRESS}, author={Kersting, Joschka and Geierhos, Michaela}, year={2020}, pages={263--272} }","short":"J. Kersting, M. Geierhos, in: Proceedings of the 9th International Conference on Pattern Recognition Applications and Methods, SCITEPRESS, Setúbal, Portugal, 2020, pp. 263--272.","apa":"Kersting, J., &#38; Geierhos, M. (2020). What Reviews in Local Online Labour Markets Reveal about the Performance of Multi-Service Providers. In <i>Proceedings of the 9th International Conference on Pattern Recognition Applications and Methods</i> (pp. 263--272). Setúbal, Portugal: SCITEPRESS.","ieee":"J. Kersting and M. Geierhos, “What Reviews in Local Online Labour Markets Reveal about the Performance of Multi-Service Providers,” in <i>Proceedings of the 9th International Conference on Pattern Recognition Applications and Methods</i>, Valetta, Malta, 2020, pp. 263--272.","chicago":"Kersting, Joschka, and Michaela Geierhos. “What Reviews in Local Online Labour Markets Reveal about the Performance of Multi-Service Providers.” In <i>Proceedings of the 9th International Conference on Pattern Recognition Applications and Methods</i>, 263--272. Setúbal, Portugal: SCITEPRESS, 2020.","ama":"Kersting J, Geierhos M. What Reviews in Local Online Labour Markets Reveal about the Performance of Multi-Service Providers. In: <i>Proceedings of the 9th International Conference on Pattern Recognition Applications and Methods</i>. Setúbal, Portugal: SCITEPRESS; 2020:263--272."},"page":"263--272","place":"Setúbal, Portugal","has_accepted_license":"1","conference":{"name":"International Conference on Pattern Recognition Applications and Methods (ICPRAM)","location":"Valetta, Malta"},"author":[{"first_name":"Joschka","id":"58701","full_name":"Kersting, Joschka","last_name":"Kersting"},{"id":"42496","full_name":"Geierhos, Michaela","orcid":"0000-0002-8180-5606","last_name":"Geierhos","first_name":"Michaela"}],"date_updated":"2022-01-06T06:52:19Z","status":"public","type":"conference","file_date_updated":"2020-09-18T09:27:41Z","user_id":"58701","department":[{"_id":"579"}],"project":[{"_id":"1","name":"SFB 901"},{"name":"SFB 901 - Project Area B","_id":"3"},{"name":"SFB 901 - Subproject B1","_id":"9"}],"_id":"15256","year":"2020","title":"What Reviews in Local Online Labour Markets Reveal about the Performance of Multi-Service Providers","date_created":"2019-12-06T13:09:42Z","publisher":"SCITEPRESS","file":[{"success":1,"relation":"main_file","content_type":"application/pdf","file_size":963370,"file_name":"Kersting & Geierhos (2020c), Kersting2020c.pdf","access_level":"closed","file_id":"19577","date_updated":"2020-09-18T09:27:41Z","creator":"jkers","date_created":"2020-09-18T09:27:41Z"}],"abstract":[{"text":"This paper deals with online customer reviews of local multi-service providers. While many studies investigate product reviews and online labour markets with service providers delivering intangible products “over the wire”, we focus on websites where providers offer multiple distinct services that can be booked, paid and reviewed online but are performed locally offline. This type of service providers has so far been neglected in the literature. This paper analyses reviews and applies sentiment analysis. It aims to gain new insights into local multi-service providers’ performance. There is a broad literature range presented with regard to the topics addressed. The results show, among other things, that providers with good ratings continue to perform well over time. We find that many positive reviews seem to encourage sales. On average, quantitative star ratings and qualitative ratings in the form of review texts match. Further results are also achieved in this study.","lang":"eng"}],"publication":"Proceedings of the 9th International Conference on Pattern Recognition Applications and Methods","language":[{"iso":"eng"}],"ddc":["000"],"keyword":["Customer Reviews","Sentiment Analysis","Online Labour Markets"]},{"_id":"4682","user_id":"72849","keyword":["online reviews","organizational culture","structural topic model","topic modeling","tutorial"],"extern":"1","language":[{"iso":"eng"}],"publication":"Organizational Research Methods","type":"journal_article","status":"public","date_updated":"2022-01-06T07:01:18Z","author":[{"first_name":"T.","last_name":"Schmiedel","full_name":"Schmiedel, T."},{"first_name":"Oliver","last_name":"Müller","full_name":"Müller, Oliver","id":"72849"},{"last_name":"vom Brocke","full_name":"vom Brocke, J.","first_name":"J."}],"date_created":"2018-10-12T08:24:26Z","title":"Topic Modeling as a Strategy of Inquiry in Organizational Research: A Tutorial With an Application Example on Organizational Culture","doi":"https://doi.org/10.1177/1094428118773858","year":"2019","page":"941--968 ","citation":{"apa":"Schmiedel, T., Müller, O., &#38; vom Brocke, J. (2019). Topic Modeling as a Strategy of Inquiry in Organizational Research: A Tutorial With an Application Example on Organizational Culture. <i>Organizational Research Methods</i>, 941--968. <a href=\"https://doi.org/10.1177/1094428118773858\">https://doi.org/10.1177/1094428118773858</a>","short":"T. Schmiedel, O. Müller, J. vom Brocke, Organizational Research Methods (2019) 941--968.","bibtex":"@article{Schmiedel_Müller_vom Brocke_2019, title={Topic Modeling as a Strategy of Inquiry in Organizational Research: A Tutorial With an Application Example on Organizational Culture}, DOI={<a href=\"https://doi.org/10.1177/1094428118773858\">https://doi.org/10.1177/1094428118773858</a>}, journal={Organizational Research Methods}, author={Schmiedel, T. and Müller, Oliver and vom Brocke, J.}, year={2019}, pages={941--968} }","mla":"Schmiedel, T., et al. “Topic Modeling as a Strategy of Inquiry in Organizational Research: A Tutorial With an Application Example on Organizational Culture.” <i>Organizational Research Methods</i>, 2019, pp. 941--968, doi:<a href=\"https://doi.org/10.1177/1094428118773858\">https://doi.org/10.1177/1094428118773858</a>.","ama":"Schmiedel T, Müller O, vom Brocke J. Topic Modeling as a Strategy of Inquiry in Organizational Research: A Tutorial With an Application Example on Organizational Culture. <i>Organizational Research Methods</i>. 2019:941--968. doi:<a href=\"https://doi.org/10.1177/1094428118773858\">https://doi.org/10.1177/1094428118773858</a>","chicago":"Schmiedel, T., Oliver Müller, and J. vom Brocke. “Topic Modeling as a Strategy of Inquiry in Organizational Research: A Tutorial With an Application Example on Organizational Culture.” <i>Organizational Research Methods</i>, 2019, 941--968. <a href=\"https://doi.org/10.1177/1094428118773858\">https://doi.org/10.1177/1094428118773858</a>.","ieee":"T. Schmiedel, O. Müller, and J. vom Brocke, “Topic Modeling as a Strategy of Inquiry in Organizational Research: A Tutorial With an Application Example on Organizational Culture,” <i>Organizational Research Methods</i>, pp. 941--968, 2019."}},{"type":"journal_article","publication":"Proceedings of the International Conference on Information Systems","urn":"14524","abstract":[{"text":"Opinion leaders of an investment network can have a significant impact on capital mar-kets because their investment decisions are adopted by their peers and trigger large trad-ing cascades, increasing herding behavior and comovement among stock returns. This paper analyzes the interaction-based relations of traders from a large social trading plat-form and identifies the driving forces and the opinion leaders within a large online trading network as the nodes with the highest centrality and the highest force of infection, respec-tively. Relying on recent insights from epidemiological research, I maintain that central-ity identifies the most central traders in the network, while the expected force quantifies the most influential traders and their spreading power. I study the behavior and charac-teristics that set central and influential traders apart from other traders. The ability to identify focal points and their trading behavior within a trading network is important for investors, investment advisers, and policy makers.","lang":"eng"}],"status":"public","_id":"1452","user_id":"67265","department":[{"_id":"186"},{"_id":"578"}],"article_type":"original","keyword":["Online trading","investment advice","network modeling","Expected Force","herding."],"language":[{"iso":"eng"}],"publication_status":"published","year":"2017","citation":{"mla":"Pelster, Matthias. “I’ll Have What S/He’s Having: A Case Study of a Social Trading Network.” <i>Proceedings of the International Conference on Information Systems</i>, 2017.","bibtex":"@article{Pelster_2017, title={I’ll Have What S/he’s Having: A Case Study of a Social Trading Network}, journal={Proceedings of the International Conference on Information Systems}, author={Pelster, Matthias}, year={2017} }","short":"M. Pelster, Proceedings of the International Conference on Information Systems (2017).","apa":"Pelster, M. (2017). I’ll Have What S/he’s Having: A Case Study of a Social Trading Network. <i>Proceedings of the International Conference on Information Systems</i>.","ama":"Pelster M. I’ll Have What S/he’s Having: A Case Study of a Social Trading Network. <i>Proceedings of the International Conference on Information Systems</i>. 2017.","chicago":"Pelster, Matthias. “I’ll Have What S/He’s Having: A Case Study of a Social Trading Network.” <i>Proceedings of the International Conference on Information Systems</i>, 2017.","ieee":"M. Pelster, “I’ll Have What S/he’s Having: A Case Study of a Social Trading Network,” <i>Proceedings of the International Conference on Information Systems</i>, 2017."},"date_updated":"2022-01-06T06:52:00Z","author":[{"first_name":"Matthias","last_name":"Pelster","orcid":" https://orcid.org/0000-0001-5740-2420","full_name":"Pelster, Matthias","id":"67265"}],"date_created":"2018-03-20T11:34:47Z","title":"I’ll Have What S/he’s Having: A Case Study of a Social Trading Network"},{"title":"Text Mining for Information Systems Researchers: An Annotated Tutorial","doi":"10.17705/1CAIS.03907","date_updated":"2026-03-10T09:44:54Z","date_created":"2018-10-12T08:30:04Z","author":[{"first_name":"Stefan","full_name":"Debortoli, Stefan","last_name":"Debortoli"},{"first_name":"Oliver","id":"72849","full_name":"Müller, Oliver","last_name":"Müller"},{"last_name":"Junglas","full_name":"Junglas, Iris","first_name":"Iris"},{"last_name":"vom Brocke","full_name":"vom Brocke, Jan","first_name":"Jan"}],"year":"2016","citation":{"bibtex":"@article{Debortoli_Müller_Junglas_vom Brocke_2016, title={Text Mining for Information Systems Researchers: An Annotated Tutorial}, DOI={<a href=\"https://doi.org/10.17705/1CAIS.03907\">10.17705/1CAIS.03907</a>}, journal={Communications of the Association for Information Systems}, author={Debortoli, Stefan and Müller, Oliver and Junglas, Iris and vom Brocke, Jan}, year={2016}, pages={555–582} }","mla":"Debortoli, Stefan, et al. “Text Mining for Information Systems Researchers: An Annotated Tutorial.” <i>Communications of the Association for Information Systems</i>, 2016, pp. 555–82, doi:<a href=\"https://doi.org/10.17705/1CAIS.03907\">10.17705/1CAIS.03907</a>.","short":"S. Debortoli, O. Müller, I. Junglas, J. vom Brocke, Communications of the Association for Information Systems (2016) 555–582.","apa":"Debortoli, S., Müller, O., Junglas, I., &#38; vom Brocke, J. (2016). Text Mining for Information Systems Researchers: An Annotated Tutorial. <i>Communications of the Association for Information Systems</i>, 555–582. <a href=\"https://doi.org/10.17705/1CAIS.03907\">https://doi.org/10.17705/1CAIS.03907</a>","chicago":"Debortoli, Stefan, Oliver Müller, Iris Junglas, and Jan vom Brocke. “Text Mining for Information Systems Researchers: An Annotated Tutorial.” <i>Communications of the Association for Information Systems</i>, 2016, 555–82. <a href=\"https://doi.org/10.17705/1CAIS.03907\">https://doi.org/10.17705/1CAIS.03907</a>.","ieee":"S. Debortoli, O. Müller, I. Junglas, and J. vom Brocke, “Text Mining for Information Systems Researchers: An Annotated Tutorial,” <i>Communications of the Association for Information Systems</i>, pp. 555–582, 2016, doi: <a href=\"https://doi.org/10.17705/1CAIS.03907\">10.17705/1CAIS.03907</a>.","ama":"Debortoli S, Müller O, Junglas I, vom Brocke J. Text Mining for Information Systems Researchers: An Annotated Tutorial. <i>Communications of the Association for Information Systems</i>. Published online 2016:555-582. doi:<a href=\"https://doi.org/10.17705/1CAIS.03907\">10.17705/1CAIS.03907</a>"},"page":"555-582","publication_identifier":{"issn":["1529-3181"],"isbn":["9781615679119"]},"keyword":["Latent dirichlet allocation","Online customer reviews","Text mining","Topic modeling","User satisfaction"],"language":[{"iso":"eng"}],"extern":"1","_id":"4691","user_id":"14972","department":[{"_id":"196"}],"abstract":[{"lang":"eng","text":"Analysts have estimated that more than 80 percent of today’s data is stored in unstructured form (e.g., text, audio, image, video)—much of it expressed in rich and ambiguous natural language. Traditionally, to analyze natural language, one has used qualitative data-analysis approaches, such as manual coding. Yet, the size of text data sets obtained from the Internet makes manual analysis virtually impossible. In this tutorial, we discuss the challenges encountered when applying automated text-mining techniques in information systems research. In particular, we showcase how to use probabilistic topic modeling via Latent Dirichlet allocation, an unsupervised text-mining technique, with a LASSO multinomial logistic regression to explain user satisfaction with an IT artifact by automatically analyzing more than 12,000 online customer reviews. For fellow information systems researchers, this tutorial provides guidance for conducting text-mining studies on their own and for evaluating the quality of others."}],"status":"public","type":"journal_article","publication":"Communications of the Association for Information Systems"},{"keyword":["combinatorial optimization","metaheuristics","multi-objective optimization","online algorithms","transportation"],"extern":"1","language":[{"iso":"eng"}],"_id":"48887","department":[{"_id":"819"}],"series_title":"GECCO’15","user_id":"102979","abstract":[{"lang":"eng","text":"We evaluate the performance of a multi-objective evolutionary algorithm on a class of dynamic routing problems with a single vehicle. In particular we focus on relating algorithmic performance to the most prominent characteristics of problem instances. The routing problem considers two types of customers: mandatory customers must be visited whereas optional customers do not necessarily have to be visited. Moreover, mandatory customers are known prior to the start of the tour whereas optional customers request for service at later points in time with the vehicle already being on its way. The multi-objective optimization problem then results as maximizing the number of visited customers while simultaneously minimizing total travel time. As an a-posteriori evaluation tool, the evolutionary algorithm aims at approximating the related Pareto set for specifically designed benchmarking instances differing in terms of number of customers, geographical layout, fraction of mandatory customers, and request times of optional customers. Conceptional and experimental comparisons to online heuristic procedures are provided."}],"status":"public","publication":"Proceedings of the Genetic and Evolutionary Computation Conference ","type":"conference","title":"Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle","doi":"10.1145/2739480.2754705","publisher":"Association for Computing Machinery","date_updated":"2023-12-13T10:49:06Z","author":[{"first_name":"Stephan","last_name":"Meisel","full_name":"Meisel, Stephan"},{"first_name":"Christian","last_name":"Grimme","full_name":"Grimme, Christian"},{"first_name":"Jakob","orcid":"0000-0002-4121-4668","last_name":"Bossek","full_name":"Bossek, Jakob","id":"102979"},{"full_name":"Wölck, Martin","last_name":"Wölck","first_name":"Martin"},{"first_name":"Günter","full_name":"Rudolph, Günter","last_name":"Rudolph"},{"full_name":"Trautmann, Heike","last_name":"Trautmann","first_name":"Heike"}],"date_created":"2023-11-14T15:58:59Z","place":"New York, NY, USA","year":"2015","page":"425–432","citation":{"bibtex":"@inproceedings{Meisel_Grimme_Bossek_Wölck_Rudolph_Trautmann_2015, place={New York, NY, USA}, series={GECCO’15}, title={Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle}, DOI={<a href=\"https://doi.org/10.1145/2739480.2754705\">10.1145/2739480.2754705</a>}, booktitle={Proceedings of the Genetic and Evolutionary Computation Conference }, publisher={Association for Computing Machinery}, author={Meisel, Stephan and Grimme, Christian and Bossek, Jakob and Wölck, Martin and Rudolph, Günter and Trautmann, Heike}, year={2015}, pages={425–432}, collection={GECCO’15} }","mla":"Meisel, Stephan, et al. “Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle.” <i>Proceedings of the Genetic and Evolutionary Computation Conference </i>, Association for Computing Machinery, 2015, pp. 425–432, doi:<a href=\"https://doi.org/10.1145/2739480.2754705\">10.1145/2739480.2754705</a>.","short":"S. Meisel, C. Grimme, J. Bossek, M. Wölck, G. Rudolph, H. Trautmann, in: Proceedings of the Genetic and Evolutionary Computation Conference , Association for Computing Machinery, New York, NY, USA, 2015, pp. 425–432.","apa":"Meisel, S., Grimme, C., Bossek, J., Wölck, M., Rudolph, G., &#38; Trautmann, H. (2015). Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle. <i>Proceedings of the Genetic and Evolutionary Computation Conference </i>, 425–432. <a href=\"https://doi.org/10.1145/2739480.2754705\">https://doi.org/10.1145/2739480.2754705</a>","ieee":"S. Meisel, C. Grimme, J. Bossek, M. Wölck, G. Rudolph, and H. Trautmann, “Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle,” in <i>Proceedings of the Genetic and Evolutionary Computation Conference </i>, 2015, pp. 425–432, doi: <a href=\"https://doi.org/10.1145/2739480.2754705\">10.1145/2739480.2754705</a>.","chicago":"Meisel, Stephan, Christian Grimme, Jakob Bossek, Martin Wölck, Günter Rudolph, and Heike Trautmann. “Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle.” In <i>Proceedings of the Genetic and Evolutionary Computation Conference </i>, 425–432. GECCO’15. New York, NY, USA: Association for Computing Machinery, 2015. <a href=\"https://doi.org/10.1145/2739480.2754705\">https://doi.org/10.1145/2739480.2754705</a>.","ama":"Meisel S, Grimme C, Bossek J, Wölck M, Rudolph G, Trautmann H. Evaluation of a Multi-Objective EA on Benchmark Instances for Dynamic Routing of a Vehicle. In: <i>Proceedings of the Genetic and Evolutionary Computation Conference </i>. GECCO’15. Association for Computing Machinery; 2015:425–432. doi:<a href=\"https://doi.org/10.1145/2739480.2754705\">10.1145/2739480.2754705</a>"},"publication_identifier":{"isbn":["978-1-4503-3472-3"]}},{"title":"Towards a Conceptualization of Online Community Health","date_updated":"2022-01-06T06:51:33Z","publisher":"Association for Information Systems. AIS Electronic Library (AISeL)","author":[{"last_name":"Wagner","full_name":"Wagner, David","first_name":"David"},{"last_name":"Richter","full_name":"Richter, Alexander","first_name":"Alexander"},{"first_name":"Matthias","last_name":"Trier","full_name":"Trier, Matthias","id":"72744"},{"first_name":"Heinz-Theo","last_name":"Wagner","full_name":"Wagner, Heinz-Theo"}],"date_created":"2019-09-19T11:29:05Z","year":"2014","citation":{"mla":"Wagner, David, et al. “Towards a Conceptualization of Online Community Health.” <i>Proceedings of the 35th International Conference on Information Systems. ICIS 2014</i>, edited by Elena Karahanna et al., Association for Information Systems. AIS Electronic Library (AISeL), 2014.","short":"D. Wagner, A. Richter, M. Trier, H.-T. Wagner, in: E. Karahanna, A. Srinivasan, B. Tan (Eds.), Proceedings of the 35th International Conference on Information Systems. ICIS 2014, Association for Information Systems. AIS Electronic Library (AISeL), 2014.","bibtex":"@inproceedings{Wagner_Richter_Trier_Wagner_2014, title={Towards a Conceptualization of Online Community Health}, booktitle={Proceedings of the 35th International Conference on Information Systems. ICIS 2014}, publisher={Association for Information Systems. AIS Electronic Library (AISeL)}, author={Wagner, David and Richter, Alexander and Trier, Matthias and Wagner, Heinz-Theo}, editor={Karahanna, Elena and Srinivasan, Ananth and Tan, BernardEditors}, year={2014} }","apa":"Wagner, D., Richter, A., Trier, M., &#38; Wagner, H.-T. (2014). Towards a Conceptualization of Online Community Health. In E. Karahanna, A. Srinivasan, &#38; B. Tan (Eds.), <i>Proceedings of the 35th International Conference on Information Systems. ICIS 2014</i>. Association for Information Systems. AIS Electronic Library (AISeL).","ieee":"D. Wagner, A. Richter, M. Trier, and H.-T. Wagner, “Towards a Conceptualization of Online Community Health,” in <i>Proceedings of the 35th International Conference on Information Systems. ICIS 2014</i>, 2014.","chicago":"Wagner, David, Alexander Richter, Matthias Trier, and Heinz-Theo Wagner. “Towards a Conceptualization of Online Community Health.” In <i>Proceedings of the 35th International Conference on Information Systems. ICIS 2014</i>, edited by Elena Karahanna, Ananth Srinivasan, and Bernard Tan. Association for Information Systems. AIS Electronic Library (AISeL), 2014.","ama":"Wagner D, Richter A, Trier M, Wagner H-T. Towards a Conceptualization of Online Community Health. In: Karahanna E, Srinivasan A, Tan B, eds. <i>Proceedings of the 35th International Conference on Information Systems. ICIS 2014</i>. Association for Information Systems. AIS Electronic Library (AISeL); 2014."},"keyword":["Social media","Online communities","Online community success","Online community health","Construct conceptualization"],"language":[{"iso":"eng"}],"_id":"13317","user_id":"62809","department":[{"_id":"198"}],"abstract":[{"text":"Along with the increasing popularity of social media and online communities in many business settings, the notion of online community health has become a common means by which community managers judge the condition or state of their communities. It has also been introduced to the literature, yet the concept remains underspecified and fragmented. In this paper, we work toward a construct conceptualization of online community health. Through a review of extant literature and dialogue with specialists in the field, we develop a multi-dimensional construct of online community health, consisting of seven elements. In writing this paper, we attempt to foster theory development around new organizational forms by advancing a new and important construct. The paper further provides guidance to the managers of social media and online communities by taking a systematic look at the well-being of their communities.","lang":"eng"}],"editor":[{"first_name":"Elena","full_name":"Karahanna, Elena","last_name":"Karahanna"},{"first_name":"Ananth","last_name":"Srinivasan","full_name":"Srinivasan, Ananth"},{"first_name":"Bernard","last_name":"Tan","full_name":"Tan, Bernard"}],"status":"public","type":"conference","publication":"Proceedings of the 35th International Conference on Information Systems. ICIS 2014"},{"place":"Norderstedt","citation":{"chicago":"Kepper, Johannes. <i>Musikedition im Zeichen neuer Medien – Historische Entwicklung und gegenwärtige Perspektiven musikalischer Gesamtausgaben</i>. Vol. 5. Schriften des Instituts für Dokumentologie und Editorik. Norderstedt: Books on Demand, 2011.","ieee":"J. Kepper, <i>Musikedition im Zeichen neuer Medien – Historische Entwicklung und gegenwärtige Perspektiven musikalischer Gesamtausgaben</i>, vol. 5. Norderstedt: Books on Demand, 2011.","ama":"Kepper J. <i>Musikedition im Zeichen neuer Medien – Historische Entwicklung und gegenwärtige Perspektiven musikalischer Gesamtausgaben</i>. Vol 5. Books on Demand; 2011.","bibtex":"@book{Kepper_2011, place={Norderstedt}, series={Schriften des Instituts für Dokumentologie und Editorik}, title={Musikedition im Zeichen neuer Medien – Historische Entwicklung und gegenwärtige Perspektiven musikalischer Gesamtausgaben}, volume={5}, publisher={Books on Demand}, author={Kepper, Johannes}, year={2011}, collection={Schriften des Instituts für Dokumentologie und Editorik} }","short":"J. Kepper, Musikedition im Zeichen neuer Medien – Historische Entwicklung und gegenwärtige Perspektiven musikalischer Gesamtausgaben, Books on Demand, Norderstedt, 2011.","mla":"Kepper, Johannes. <i>Musikedition im Zeichen neuer Medien – Historische Entwicklung und gegenwärtige Perspektiven musikalischer Gesamtausgaben</i>. Books on Demand, 2011.","apa":"Kepper, J. (2011). <i>Musikedition im Zeichen neuer Medien – Historische Entwicklung und gegenwärtige Perspektiven musikalischer Gesamtausgaben</i> (Vol. 5). Books on Demand."},"intvolume":"         5","publication_status":"published","publication_identifier":{"isbn":["978-3-8448-0076-0"]},"main_file_link":[{"url":"http://kups.ub.uni-koeln.de/id/eprint/6639","open_access":"1"}],"oa":"1","date_updated":"2024-08-28T14:18:49Z","author":[{"id":"1684","full_name":"Kepper, Johannes","last_name":"Kepper","orcid":"0000-0003-4891-260X","first_name":"Johannes"}],"volume":5,"status":"public","type":"book","_id":"55829","user_id":"1684","series_title":"Schriften des Instituts für Dokumentologie und Editorik","department":[{"_id":"538"},{"_id":"874"}],"year":"2011","title":"Musikedition im Zeichen neuer Medien – Historische Entwicklung und gegenwärtige Perspektiven musikalischer Gesamtausgaben","publisher":"Books on Demand","date_created":"2024-08-28T11:40:24Z","abstract":[{"text":"Die Keimzelle der Musikwissenschaft als geisteswissenschaftlicher Disziplin liegt in den Bemühungen des 19. Jahrhunderts, die Werke herausragender Komponisten zu konservieren und einer breiteren Öffentlichkeit zu erschließen. In diesem Umfeld erschien im Jahr 1851 der erste Band der Bach-Gesamtausgabe, herausgegeben von der Leipziger Bachgesellschaft. Alle nachfolgenden Musiker-Ausgaben entwickelten sich auf dieser Basis und reizten die Möglichkeiten des Buchmediums in zunehmenden Maße aus. Seit etwa zehn Jahren wird versucht, das Potential digitaler Medien für die Musikphilologie zu erschließen. Ausgehend von der Geschichte musikwissenschaftlicher Ausgaben und einer kritischen Reflektion des bisher Geleisteten, weist dieser Band mögliche neue Perspektiven für zukünftige, dem neuen Medium angemessene Editionsformen auf.","lang":"eng"}],"keyword":["admin:website","Codierungsformate","DigitaleMusikedition","Glossar","Bibliografie online"],"language":[{"iso":"ger"}]},{"language":[{"iso":"eng"}],"keyword":["audio streaming","audio visual data streaming","context information speech","face identification","face recognition","image segmentation","middleware","multimodal telecommunication","online diarization","service oriented middleware architecture","sessionless telecommunication","software architecture","speaker identification","speaker localization","speaker recognition","steerable camera","telecommunication computing","temporal segmentation","terminal-less telecommunication","video streaming"],"department":[{"_id":"54"}],"user_id":"460","_id":"11892","status":"public","abstract":[{"text":"For an environment to be perceived as being smart, contextual information has to be gathered to adapt the system's behavior and its interface towards the user. Being a rich source of context information speech can be acquired unobtrusively by microphone arrays and then processed to extract information about the user and his environment. In this paper, a system for joint temporal segmentation, speaker localization, and identification is presented, which is supported by face identification from video data obtained from a steerable camera. Special attention is paid to latency aspects and online processing capabilities, as they are important for the application under investigation, namely ambient communication. It describes the vision of terminal-less, session-less and multi-modal telecommunication with remote partners, where the user can move freely within his home while the communication follows him. The speaker diarization serves as a context source, which has been integrated in a service-oriented middleware architecture and provided to the application to select the most appropriate I/O device and to steer the camera towards the speaker during ambient communication.","lang":"eng"}],"publication":"IEEE Journal of Selected Topics in Signal Processing","type":"journal_article","doi":"10.1109/JSTSP.2010.2050519","main_file_link":[{"open_access":"1","url":"https://groups.uni-paderborn.de/nt/pubs/2010/ScHa10.pdf"}],"title":"Online Diarization of Streaming Audio-Visual Data for Smart Environments","volume":4,"date_created":"2019-07-12T05:30:16Z","author":[{"first_name":"Joerg","full_name":"Schmalenstroeer, Joerg","id":"460","last_name":"Schmalenstroeer"},{"id":"242","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach","first_name":"Reinhold"}],"date_updated":"2023-10-26T08:10:18Z","oa":"1","intvolume":"         4","page":"845-856","citation":{"ama":"Schmalenstroeer J, Haeb-Umbach R. Online Diarization of Streaming Audio-Visual Data for Smart Environments. <i>IEEE Journal of Selected Topics in Signal Processing</i>. 2010;4(5):845-856. doi:<a href=\"https://doi.org/10.1109/JSTSP.2010.2050519\">10.1109/JSTSP.2010.2050519</a>","ieee":"J. Schmalenstroeer and R. Haeb-Umbach, “Online Diarization of Streaming Audio-Visual Data for Smart Environments,” <i>IEEE Journal of Selected Topics in Signal Processing</i>, vol. 4, no. 5, pp. 845–856, 2010, doi: <a href=\"https://doi.org/10.1109/JSTSP.2010.2050519\">10.1109/JSTSP.2010.2050519</a>.","chicago":"Schmalenstroeer, Joerg, and Reinhold Haeb-Umbach. “Online Diarization of Streaming Audio-Visual Data for Smart Environments.” <i>IEEE Journal of Selected Topics in Signal Processing</i> 4, no. 5 (2010): 845–56. <a href=\"https://doi.org/10.1109/JSTSP.2010.2050519\">https://doi.org/10.1109/JSTSP.2010.2050519</a>.","apa":"Schmalenstroeer, J., &#38; Haeb-Umbach, R. (2010). Online Diarization of Streaming Audio-Visual Data for Smart Environments. <i>IEEE Journal of Selected Topics in Signal Processing</i>, <i>4</i>(5), 845–856. <a href=\"https://doi.org/10.1109/JSTSP.2010.2050519\">https://doi.org/10.1109/JSTSP.2010.2050519</a>","mla":"Schmalenstroeer, Joerg, and Reinhold Haeb-Umbach. “Online Diarization of Streaming Audio-Visual Data for Smart Environments.” <i>IEEE Journal of Selected Topics in Signal Processing</i>, vol. 4, no. 5, 2010, pp. 845–56, doi:<a href=\"https://doi.org/10.1109/JSTSP.2010.2050519\">10.1109/JSTSP.2010.2050519</a>.","bibtex":"@article{Schmalenstroeer_Haeb-Umbach_2010, title={Online Diarization of Streaming Audio-Visual Data for Smart Environments}, volume={4}, DOI={<a href=\"https://doi.org/10.1109/JSTSP.2010.2050519\">10.1109/JSTSP.2010.2050519</a>}, number={5}, journal={IEEE Journal of Selected Topics in Signal Processing}, author={Schmalenstroeer, Joerg and Haeb-Umbach, Reinhold}, year={2010}, pages={845–856} }","short":"J. Schmalenstroeer, R. Haeb-Umbach, IEEE Journal of Selected Topics in Signal Processing 4 (2010) 845–856."},"year":"2010","issue":"5","quality_controlled":"1"},{"main_file_link":[{"url":"https://groups.uni-paderborn.de/nt/pubs/2009/BePeHa09.pdf","open_access":"1"}],"doi":"10.1109/WPNC.2009.4907833","title":"Robust vehicle localization based on multi-level sensor fusion and online parameter estimation","date_created":"2019-07-12T05:27:01Z","author":[{"full_name":"Bevermeier, Maik","last_name":"Bevermeier","first_name":"Maik"},{"first_name":"Sven","full_name":"Peschke, Sven","last_name":"Peschke"},{"first_name":"Reinhold","id":"242","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach"}],"date_updated":"2022-01-06T06:51:07Z","oa":"1","citation":{"ieee":"M. Bevermeier, S. Peschke, and R. Haeb-Umbach, “Robust vehicle localization based on multi-level sensor fusion and online parameter estimation,” in <i>6th Workshop on Positioning Navigation and Communication (WPNC 2009)</i>, 2009, pp. 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 <i>6th Workshop on Positioning Navigation and Communication (WPNC 2009)</i>, 235–42, 2009. <a href=\"https://doi.org/10.1109/WPNC.2009.4907833\">https://doi.org/10.1109/WPNC.2009.4907833</a>.","ama":"Bevermeier M, Peschke S, Haeb-Umbach R. Robust vehicle localization based on multi-level sensor fusion and online parameter estimation. In: <i>6th Workshop on Positioning Navigation and Communication (WPNC 2009)</i>. ; 2009:235-242. doi:<a href=\"https://doi.org/10.1109/WPNC.2009.4907833\">10.1109/WPNC.2009.4907833</a>","apa":"Bevermeier, M., Peschke, S., &#38; Haeb-Umbach, R. (2009). Robust vehicle localization based on multi-level sensor fusion and online parameter estimation. In <i>6th Workshop on Positioning Navigation and Communication (WPNC 2009)</i> (pp. 235–242). <a href=\"https://doi.org/10.1109/WPNC.2009.4907833\">https://doi.org/10.1109/WPNC.2009.4907833</a>","short":"M. Bevermeier, S. Peschke, R. Haeb-Umbach, in: 6th Workshop on Positioning Navigation and Communication (WPNC 2009), 2009, pp. 235–242.","bibtex":"@inproceedings{Bevermeier_Peschke_Haeb-Umbach_2009, title={Robust vehicle localization based on multi-level sensor fusion and online parameter estimation}, DOI={<a href=\"https://doi.org/10.1109/WPNC.2009.4907833\">10.1109/WPNC.2009.4907833</a>}, 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} }","mla":"Bevermeier, Maik, et al. “Robust Vehicle Localization Based on Multi-Level Sensor Fusion and Online Parameter Estimation.” <i>6th Workshop on Positioning Navigation and Communication (WPNC 2009)</i>, 2009, pp. 235–42, doi:<a href=\"https://doi.org/10.1109/WPNC.2009.4907833\">10.1109/WPNC.2009.4907833</a>."},"page":"235-242","year":"2009","language":[{"iso":"eng"}],"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"],"user_id":"44006","department":[{"_id":"54"}],"_id":"11723","status":"public","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."}],"type":"conference","publication":"6th Workshop on Positioning Navigation and Communication (WPNC 2009)"},{"publication":"Proceedings of the IADIS International Conference WWW Internet 2003. vol. 2","type":"book_chapter","status":"public","abstract":[{"lang":"eng","text":"Voting via the Internet is part of electronic government and electronic democracy. However, there are many obstacles which have to be overcome, especially legal restrictions have to be transformed into technical and security solutions. In the first part the article discusses advantages and disadvantages of Internet elections, shows different application fields, and presents important international pilot schemes (political and business ones). in the second part, due to democratic basic principles, technological security aspects are worked out."}],"department":[{"_id":"277"}],"user_id":"61579","_id":"5667","language":[{"iso":"eng"}],"extern":"1","keyword":["Internet Voting","Online polls","E-Democracy","Security"],"page":"1017-1021","citation":{"apa":"Schryen, G. (2003). E-Democracy: Internet Voting. In <i>Proceedings of the IADIS International Conference WWW Internet 2003. vol. 2</i> (pp. 1017–1021). Algarve: IADIS Press.","bibtex":"@inbook{Schryen_2003, place={Algarve}, title={E-Democracy: Internet Voting}, booktitle={Proceedings of the IADIS International Conference WWW Internet 2003. vol. 2}, publisher={IADIS Press}, author={Schryen, Guido}, year={2003}, pages={1017–1021} }","short":"G. Schryen, in: Proceedings of the IADIS International Conference WWW Internet 2003. Vol. 2, IADIS Press, Algarve, 2003, pp. 1017–1021.","mla":"Schryen, Guido. “E-Democracy: Internet Voting.” <i>Proceedings of the IADIS International Conference WWW Internet 2003. Vol. 2</i>, IADIS Press, 2003, pp. 1017–21.","chicago":"Schryen, Guido. “E-Democracy: Internet Voting.” In <i>Proceedings of the IADIS International Conference WWW Internet 2003. Vol. 2</i>, 1017–21. Algarve: IADIS Press, 2003.","ieee":"G. Schryen, “E-Democracy: Internet Voting,” in <i>Proceedings of the IADIS International Conference WWW Internet 2003. vol. 2</i>, Algarve: IADIS Press, 2003, pp. 1017–1021.","ama":"Schryen G. E-Democracy: Internet Voting. In: <i>Proceedings of the IADIS International Conference WWW Internet 2003. Vol. 2</i>. Algarve: IADIS Press; 2003:1017-1021."},"year":"2003","place":"Algarve","author":[{"full_name":"Schryen, Guido","id":"72850","last_name":"Schryen","first_name":"Guido"}],"date_created":"2018-11-14T15:01:49Z","publisher":"IADIS Press","date_updated":"2022-01-06T07:02:25Z","title":"E-Democracy: Internet Voting"}]