[{"year":"2020","citation":{"apa":"Prince, N. R., Bruce Prince, J., &#38; Kabst, R. (2020). National culture and incentives: Are incentive practices always good? <i>Journal of World Business</i>, <i>55</i>(3). <a href=\"https://doi.org/10.1016/j.jwb.2020.101075\">https://doi.org/10.1016/j.jwb.2020.101075</a>","short":"N.R. Prince, J. Bruce Prince, R. Kabst, Journal of World Business 55 (2020).","mla":"Prince, Nicholas R., et al. “National Culture and Incentives: Are Incentive Practices Always Good?” <i>Journal of World Business</i>, vol. 55, no. 3, 101075, 2020, doi:<a href=\"https://doi.org/10.1016/j.jwb.2020.101075\">10.1016/j.jwb.2020.101075</a>.","bibtex":"@article{Prince_Bruce Prince_Kabst_2020, title={National culture and incentives: Are incentive practices always good?}, volume={55}, DOI={<a href=\"https://doi.org/10.1016/j.jwb.2020.101075\">10.1016/j.jwb.2020.101075</a>}, number={3101075}, journal={Journal of World Business}, author={Prince, Nicholas R. and Bruce Prince, J. and Kabst, Rüdiger}, year={2020} }","ieee":"N. R. Prince, J. Bruce Prince, and R. Kabst, “National culture and incentives: Are incentive practices always good?,” <i>Journal of World Business</i>, vol. 55, no. 3, 2020.","chicago":"Prince, Nicholas R., J. Bruce Prince, and Rüdiger Kabst. “National Culture and Incentives: Are Incentive Practices Always Good?” <i>Journal of World Business</i> 55, no. 3 (2020). <a href=\"https://doi.org/10.1016/j.jwb.2020.101075\">https://doi.org/10.1016/j.jwb.2020.101075</a>.","ama":"Prince NR, Bruce Prince J, Kabst R. National culture and incentives: Are incentive practices always good? <i>Journal of World Business</i>. 2020;55(3). doi:<a href=\"https://doi.org/10.1016/j.jwb.2020.101075\">10.1016/j.jwb.2020.101075</a>"},"intvolume":"        55","publication_status":"published","publication_identifier":{"issn":["1090-9516"]},"issue":"3","title":"National culture and incentives: Are incentive practices always good?","doi":"10.1016/j.jwb.2020.101075","date_updated":"2022-01-06T06:52:43Z","date_created":"2020-02-26T12:28:58Z","author":[{"last_name":"Prince","full_name":"Prince, Nicholas R.","first_name":"Nicholas R."},{"last_name":"Bruce Prince","full_name":"Bruce Prince, J.","first_name":"J."},{"first_name":"Rüdiger","id":"42362","full_name":"Kabst, Rüdiger","last_name":"Kabst"}],"volume":55,"status":"public","type":"journal_article","publication":"Journal of World Business","article_number":"101075","language":[{"iso":"eng"}],"_id":"16100","user_id":"42362"},{"language":[{"iso":"eng"}],"_id":"16116","user_id":"65649","department":[{"_id":"181"}],"status":"public","type":"conference","publication":"Proceedings of the 2020 AMA Winter Academic Conference","title":"How to Build Trust on Peer-to-Peer Platforms: An Investigation of the Antecedents of Peer and Platform Trust","conference":{"location":"San Diego, CA, USA","end_date":"16.02.2020","start_date":"14.02.2020","name":"2020 AMA Winter Academic Conference"},"date_updated":"2022-01-06T06:52:43Z","author":[{"id":"65649","full_name":"Purrmann, Maren","last_name":"Purrmann","first_name":"Maren"},{"last_name":"Wünderlich","id":"36392","full_name":"Wünderlich, Nancy","first_name":"Nancy"}],"date_created":"2020-02-27T14:12:09Z","year":"2020","citation":{"ieee":"M. Purrmann and N. Wünderlich, “How to Build Trust on Peer-to-Peer Platforms: An Investigation of the Antecedents of Peer and Platform Trust,” in <i>Proceedings of the 2020 AMA Winter Academic Conference</i>, San Diego, CA, USA, 2020.","chicago":"Purrmann, Maren, and Nancy Wünderlich. “How to Build Trust on Peer-to-Peer Platforms: An Investigation of the Antecedents of Peer and Platform Trust.” In <i>Proceedings of the 2020 AMA Winter Academic Conference</i>, 2020.","ama":"Purrmann M, Wünderlich N. How to Build Trust on Peer-to-Peer Platforms: An Investigation of the Antecedents of Peer and Platform Trust. In: <i>Proceedings of the 2020 AMA Winter Academic Conference</i>. ; 2020.","bibtex":"@inproceedings{Purrmann_Wünderlich_2020, title={How to Build Trust on Peer-to-Peer Platforms: An Investigation of the Antecedents of Peer and Platform Trust}, booktitle={Proceedings of the 2020 AMA Winter Academic Conference}, author={Purrmann, Maren and Wünderlich, Nancy}, year={2020} }","short":"M. Purrmann, N. Wünderlich, in: Proceedings of the 2020 AMA Winter Academic Conference, 2020.","mla":"Purrmann, Maren, and Nancy Wünderlich. “How to Build Trust on Peer-to-Peer Platforms: An Investigation of the Antecedents of Peer and Platform Trust.” <i>Proceedings of the 2020 AMA Winter Academic Conference</i>, 2020.","apa":"Purrmann, M., &#38; Wünderlich, N. (2020). How to Build Trust on Peer-to-Peer Platforms: An Investigation of the Antecedents of Peer and Platform Trust. In <i>Proceedings of the 2020 AMA Winter Academic Conference</i>. San Diego, CA, USA."}},{"intvolume":"         8","citation":{"ieee":"B. Liu <i>et al.</i>, “Nonlinear Wavefront Control by Geometric-Phase Dielectric Metasurfaces: Influence of Mode Field and Rotational Symmetry,” <i>Advanced Optical Materials</i>, vol. 8, no. 9, 2020.","chicago":"Liu, Bingyi, Basudeb Sain, Bernhard Reineke, Ruizhe Zhao, Cedrik Meier, Lingling Huang, Yongyuan Jiang, and Thomas Zentgraf. “Nonlinear Wavefront Control by Geometric-Phase Dielectric Metasurfaces: Influence of Mode Field and Rotational Symmetry.” <i>Advanced Optical Materials</i> 8, no. 9 (2020). <a href=\"https://doi.org/10.1002/adom.201902050\">https://doi.org/10.1002/adom.201902050</a>.","ama":"Liu B, Sain B, Reineke B, et al. Nonlinear Wavefront Control by Geometric-Phase Dielectric Metasurfaces: Influence of Mode Field and Rotational Symmetry. <i>Advanced Optical Materials</i>. 2020;8(9). doi:<a href=\"https://doi.org/10.1002/adom.201902050\">10.1002/adom.201902050</a>","mla":"Liu, Bingyi, et al. “Nonlinear Wavefront Control by Geometric-Phase Dielectric Metasurfaces: Influence of Mode Field and Rotational Symmetry.” <i>Advanced Optical Materials</i>, vol. 8, no. 9, 1902050, Wiley, 2020, doi:<a href=\"https://doi.org/10.1002/adom.201902050\">10.1002/adom.201902050</a>.","bibtex":"@article{Liu_Sain_Reineke_Zhao_Meier_Huang_Jiang_Zentgraf_2020, title={Nonlinear Wavefront Control by Geometric-Phase Dielectric Metasurfaces: Influence of Mode Field and Rotational Symmetry}, volume={8}, DOI={<a href=\"https://doi.org/10.1002/adom.201902050\">10.1002/adom.201902050</a>}, number={91902050}, journal={Advanced Optical Materials}, publisher={Wiley}, author={Liu, Bingyi and Sain, Basudeb and Reineke, Bernhard and Zhao, Ruizhe and Meier, Cedrik and Huang, Lingling and Jiang, Yongyuan and Zentgraf, Thomas}, year={2020} }","short":"B. Liu, B. Sain, B. Reineke, R. Zhao, C. Meier, L. Huang, Y. Jiang, T. Zentgraf, Advanced Optical Materials 8 (2020).","apa":"Liu, B., Sain, B., Reineke, B., Zhao, R., Meier, C., Huang, L., … Zentgraf, T. (2020). Nonlinear Wavefront Control by Geometric-Phase Dielectric Metasurfaces: Influence of Mode Field and Rotational Symmetry. <i>Advanced Optical Materials</i>, <i>8</i>(9). <a href=\"https://doi.org/10.1002/adom.201902050\">https://doi.org/10.1002/adom.201902050</a>"},"has_accepted_license":"1","publication_identifier":{"issn":["2195-1071"]},"publication_status":"published","doi":"10.1002/adom.201902050","main_file_link":[{"open_access":"1","url":"https://onlinelibrary.wiley.com/doi/full/10.1002/adom.201902050"}],"date_updated":"2022-01-06T06:52:45Z","oa":"1","volume":8,"author":[{"first_name":"Bingyi","last_name":"Liu","full_name":"Liu, Bingyi"},{"first_name":"Basudeb","last_name":"Sain","full_name":"Sain, Basudeb"},{"first_name":"Bernhard","last_name":"Reineke","full_name":"Reineke, Bernhard"},{"last_name":"Zhao","full_name":"Zhao, Ruizhe","first_name":"Ruizhe"},{"first_name":"Cedrik","full_name":"Meier, Cedrik","id":"20798","orcid":"https://orcid.org/0000-0002-3787-3572","last_name":"Meier"},{"full_name":"Huang, Lingling","last_name":"Huang","first_name":"Lingling"},{"last_name":"Jiang","full_name":"Jiang, Yongyuan","first_name":"Yongyuan"},{"last_name":"Zentgraf","orcid":"0000-0002-8662-1101","id":"30525","full_name":"Zentgraf, Thomas","first_name":"Thomas"}],"status":"public","type":"journal_article","article_number":"1902050","article_type":"original","file_date_updated":"2020-02-28T17:37:38Z","_id":"16197","project":[{"_id":"53","name":"TRR 142"},{"_id":"56","name":"TRR 142 - Project Area C"},{"_id":"75","name":"TRR 142 - Subproject C5"}],"department":[{"_id":"15"},{"_id":"230"},{"_id":"289"}],"user_id":"30525","year":"2020","quality_controlled":"1","issue":"9","title":"Nonlinear Wavefront Control by Geometric-Phase Dielectric Metasurfaces: Influence of Mode Field and Rotational Symmetry","publisher":"Wiley","date_created":"2020-02-28T17:29:17Z","abstract":[{"lang":"eng","text":"Nonlinear Pancharatnam–Berry phase metasurfaces facilitate the nontrivial phase modulation for frequency conversion processes by leveraging photon‐spin dependent nonlinear geometric‐phases. However, plasmonic metasurfaces show some severe limitation for nonlinear frequency conversion due to the intrinsic high ohmic loss and low damage threshold of plasmonic nanostructures. Here, the nonlinear geometric‐phases associated with the third‐harmonic generation process occurring in all‐dielectric metasurfaces is studied systematically, which are composed of silicon nanofins with different in‐plane rotational symmetries. It is found that the wave coupling among different field components of the resonant fundamental field gives rise to the appearance of different nonlinear geometric‐phases of the generated third‐harmonic signals. The experimental observations of the nonlinear beam steering and nonlinear holography realized in this work by all‐dielectric geometric‐phase metasurfaces are well explained with the developed theory. This work offers a new physical picture to understand the nonlinear optical process occurring at nanoscale dielectric resonators and will help in the design of nonlinear metasurfaces with tailored phase properties."}],"file":[{"success":1,"relation":"main_file","content_type":"application/pdf","file_size":2914923,"file_id":"16202","access_level":"closed","file_name":"adom.201902050.pdf","date_updated":"2020-02-28T17:37:38Z","creator":"zentgraf","date_created":"2020-02-28T17:37:38Z"}],"publication":"Advanced Optical Materials","ddc":["530"],"language":[{"iso":"eng"}]},{"language":[{"iso":"eng"}],"user_id":"65478","department":[{"_id":"9"},{"_id":"145"}],"_id":"16203","status":"public","type":"conference_abstract","conference":{"location":"Berchtesgaden","name":"Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion"},"title":"Beschreibung der Rektifikation viskoser Systeme mit Hydrodynamischen Analogien","author":[{"last_name":"Bolenz","id":"65478","full_name":"Bolenz, Lukas","first_name":"Lukas"},{"full_name":"Gutperl, Sven","last_name":"Gutperl","first_name":"Sven"},{"first_name":"Dominique","full_name":"Toye, Dominique","last_name":"Toye"},{"first_name":"Stephan","full_name":"Scholl, Stephan","last_name":"Scholl"},{"first_name":"Eugeny","last_name":"Kenig","id":"665","full_name":"Kenig, Eugeny"}],"date_created":"2020-03-02T08:21:33Z","date_updated":"2022-01-06T06:52:45Z","citation":{"apa":"Bolenz, L., Gutperl, S., Toye, D., Scholl, S., &#38; Kenig, E. (2020). Beschreibung der Rektifikation viskoser Systeme mit Hydrodynamischen Analogien. Presented at the Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion, Berchtesgaden.","short":"L. Bolenz, S. Gutperl, D. Toye, S. Scholl, E. Kenig, in: 2020.","bibtex":"@inproceedings{Bolenz_Gutperl_Toye_Scholl_Kenig_2020, title={Beschreibung der Rektifikation viskoser Systeme mit Hydrodynamischen Analogien}, author={Bolenz, Lukas and Gutperl, Sven and Toye, Dominique and Scholl, Stephan and Kenig, Eugeny}, year={2020} }","mla":"Bolenz, Lukas, et al. <i>Beschreibung Der Rektifikation Viskoser Systeme Mit Hydrodynamischen Analogien</i>. 2020.","ama":"Bolenz L, Gutperl S, Toye D, Scholl S, Kenig E. Beschreibung der Rektifikation viskoser Systeme mit Hydrodynamischen Analogien. In: ; 2020.","ieee":"L. Bolenz, S. Gutperl, D. Toye, S. Scholl, and E. Kenig, “Beschreibung der Rektifikation viskoser Systeme mit Hydrodynamischen Analogien,” presented at the Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion, Berchtesgaden, 2020.","chicago":"Bolenz, Lukas, Sven Gutperl, Dominique Toye, Stephan Scholl, and Eugeny Kenig. “Beschreibung Der Rektifikation Viskoser Systeme Mit Hydrodynamischen Analogien,” 2020."},"year":"2020"},{"date_updated":"2022-01-06T06:52:45Z","author":[{"full_name":"Gutperl, Sven","last_name":"Gutperl","first_name":"Sven"},{"first_name":"Lukas","full_name":"Bolenz, Lukas","id":"65478","last_name":"Bolenz"},{"full_name":"Kriese, Friederike ","last_name":"Kriese","first_name":"Friederike "},{"last_name":"Jasch","full_name":"Jasch, Katharina","first_name":"Katharina"},{"first_name":"Eugeny","last_name":"Kenig","full_name":"Kenig, Eugeny","id":"665"},{"first_name":"Stephan","last_name":"Scholl","full_name":"Scholl, Stephan"}],"date_created":"2020-03-02T08:27:40Z","title":"Simulation und Bewertung eines Anlagenkonzepts für Trennleistungsmessungen mit nicht-verdampfenden Komponenten","conference":{"location":"Berchtesgaden","name":"Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion"},"year":"2020","citation":{"apa":"Gutperl, S., Bolenz, L., Kriese, F., Jasch, K., Kenig, E., &#38; Scholl, S. (2020). Simulation und Bewertung eines Anlagenkonzepts für Trennleistungsmessungen mit nicht-verdampfenden Komponenten. Presented at the Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion, Berchtesgaden.","mla":"Gutperl, Sven, et al. <i>Simulation Und Bewertung Eines Anlagenkonzepts Für Trennleistungsmessungen Mit Nicht-Verdampfenden Komponenten</i>. 2020.","bibtex":"@inproceedings{Gutperl_Bolenz_Kriese_Jasch_Kenig_Scholl_2020, title={Simulation und Bewertung eines Anlagenkonzepts für Trennleistungsmessungen mit nicht-verdampfenden Komponenten}, author={Gutperl, Sven and Bolenz, Lukas and Kriese, Friederike  and Jasch, Katharina and Kenig, Eugeny and Scholl, Stephan}, year={2020} }","short":"S. Gutperl, L. Bolenz, F. Kriese, K. Jasch, E. Kenig, S. Scholl, in: 2020.","ieee":"S. Gutperl, L. Bolenz, F. Kriese, K. Jasch, E. Kenig, and S. Scholl, “Simulation und Bewertung eines Anlagenkonzepts für Trennleistungsmessungen mit nicht-verdampfenden Komponenten,” presented at the Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion, Berchtesgaden, 2020.","chicago":"Gutperl, Sven, Lukas Bolenz, Friederike  Kriese, Katharina Jasch, Eugeny Kenig, and Stephan Scholl. “Simulation Und Bewertung Eines Anlagenkonzepts Für Trennleistungsmessungen Mit Nicht-Verdampfenden Komponenten,” 2020.","ama":"Gutperl S, Bolenz L, Kriese F, Jasch K, Kenig E, Scholl S. Simulation und Bewertung eines Anlagenkonzepts für Trennleistungsmessungen mit nicht-verdampfenden Komponenten. In: ; 2020."},"_id":"16204","user_id":"65478","department":[{"_id":"9"},{"_id":"145"}],"language":[{"iso":"eng"}],"type":"conference_abstract","status":"public"},{"user_id":"29891","department":[{"_id":"9"},{"_id":"145"}],"project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"_id":"16207","language":[{"iso":"eng"}],"type":"conference_abstract","status":"public","date_created":"2020-03-02T13:05:34Z","author":[{"first_name":"Jens","full_name":"Heine, Jens","last_name":"Heine"},{"first_name":"Christian","full_name":"Wecker, Christian","id":"29891","last_name":"Wecker"},{"id":"665","full_name":"Kenig, Eugeny","last_name":"Kenig","first_name":"Eugeny"},{"first_name":"Hans-Joerg","full_name":"Bart, Hans-Joerg","last_name":"Bart"}],"publisher":"Jahrestreffen der ProcessNet-Fachgruppe Extraktion","date_updated":"2022-01-06T06:52:45Z","title":"Stofftransportmessung am ruhenden und bewegten Einzeltropfen","citation":{"apa":"Heine, J., Wecker, C., Kenig, E., &#38; Bart, H.-J. (2020). Stofftransportmessung am ruhenden und bewegten Einzeltropfen. Berchtesgaden: Jahrestreffen der ProcessNet-Fachgruppe Extraktion.","bibtex":"@inproceedings{Heine_Wecker_Kenig_Bart_2020, place={Berchtesgaden}, title={Stofftransportmessung am ruhenden und bewegten Einzeltropfen}, publisher={Jahrestreffen der ProcessNet-Fachgruppe Extraktion}, author={Heine, Jens and Wecker, Christian and Kenig, Eugeny and Bart, Hans-Joerg}, year={2020} }","mla":"Heine, Jens, et al. <i>Stofftransportmessung Am Ruhenden Und Bewegten Einzeltropfen</i>. Jahrestreffen der ProcessNet-Fachgruppe Extraktion, 2020.","short":"J. Heine, C. Wecker, E. Kenig, H.-J. Bart, in: Jahrestreffen der ProcessNet-Fachgruppe Extraktion, Berchtesgaden, 2020.","ama":"Heine J, Wecker C, Kenig E, Bart H-J. Stofftransportmessung am ruhenden und bewegten Einzeltropfen. In: Berchtesgaden: Jahrestreffen der ProcessNet-Fachgruppe Extraktion; 2020.","chicago":"Heine, Jens, Christian Wecker, Eugeny Kenig, and Hans-Joerg Bart. “Stofftransportmessung Am Ruhenden Und Bewegten Einzeltropfen.” Berchtesgaden: Jahrestreffen der ProcessNet-Fachgruppe Extraktion, 2020.","ieee":"J. Heine, C. Wecker, E. Kenig, and H.-J. Bart, “Stofftransportmessung am ruhenden und bewegten Einzeltropfen,” 2020."},"place":"Berchtesgaden","year":"2020"},{"language":[{"iso":"eng"}],"user_id":"29891","department":[{"_id":"9"},{"_id":"145"}],"project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"_id":"16208","status":"public","type":"conference_abstract","title":"CFD-basierte Untersuchung stofftransportinduzierter Marangoni-konvektion in Flüssig-Flüssig-Systemen","author":[{"last_name":"Wecker","full_name":"Wecker, Christian","id":"29891","first_name":"Christian"},{"first_name":"Andreas","last_name":"Schulz","id":"63109","full_name":"Schulz, Andreas"},{"first_name":"Jens","full_name":"Heine, Jens","last_name":"Heine"},{"first_name":"Hans-Joerg","last_name":"Bart","full_name":"Bart, Hans-Joerg"},{"full_name":"Kenig, Eugeny","id":"665","last_name":"Kenig","first_name":"Eugeny"}],"date_created":"2020-03-02T13:08:35Z","publisher":"Jahrestreffen der ProcessNet-Fachgruppe Extraktion","date_updated":"2022-01-06T06:52:45Z","citation":{"apa":"Wecker, C., Schulz, A., Heine, J., Bart, H.-J., &#38; Kenig, E. (2020). CFD-basierte Untersuchung stofftransportinduzierter Marangoni-konvektion in Flüssig-Flüssig-Systemen. Berchtesgaden: Jahrestreffen der ProcessNet-Fachgruppe Extraktion.","short":"C. Wecker, A. Schulz, J. Heine, H.-J. Bart, E. Kenig, in: Jahrestreffen der ProcessNet-Fachgruppe Extraktion, Berchtesgaden, 2020.","mla":"Wecker, Christian, et al. <i>CFD-Basierte Untersuchung Stofftransportinduzierter Marangoni-Konvektion in Flüssig-Flüssig-Systemen</i>. Jahrestreffen der ProcessNet-Fachgruppe Extraktion, 2020.","bibtex":"@inproceedings{Wecker_Schulz_Heine_Bart_Kenig_2020, place={Berchtesgaden}, title={CFD-basierte Untersuchung stofftransportinduzierter Marangoni-konvektion in Flüssig-Flüssig-Systemen}, publisher={Jahrestreffen der ProcessNet-Fachgruppe Extraktion}, author={Wecker, Christian and Schulz, Andreas and Heine, Jens and Bart, Hans-Joerg and Kenig, Eugeny}, year={2020} }","ama":"Wecker C, Schulz A, Heine J, Bart H-J, Kenig E. CFD-basierte Untersuchung stofftransportinduzierter Marangoni-konvektion in Flüssig-Flüssig-Systemen. In: Berchtesgaden: Jahrestreffen der ProcessNet-Fachgruppe Extraktion; 2020.","ieee":"C. Wecker, A. Schulz, J. Heine, H.-J. Bart, and E. Kenig, “CFD-basierte Untersuchung stofftransportinduzierter Marangoni-konvektion in Flüssig-Flüssig-Systemen,” 2020.","chicago":"Wecker, Christian, Andreas Schulz, Jens Heine, Hans-Joerg Bart, and Eugeny Kenig. “CFD-Basierte Untersuchung Stofftransportinduzierter Marangoni-Konvektion in Flüssig-Flüssig-Systemen.” Berchtesgaden: Jahrestreffen der ProcessNet-Fachgruppe Extraktion, 2020."},"year":"2020","place":"Berchtesgaden"},{"author":[{"first_name":"Muhammad","id":"64665","full_name":"Awais, Muhammad","last_name":"Awais","orcid":"https://orcid.org/0000-0003-4148-2969"},{"full_name":"Ghasemzadeh Mohammadi, Hassan","id":"61186","last_name":"Ghasemzadeh Mohammadi","first_name":"Hassan"},{"full_name":"Platzner, Marco","id":"398","last_name":"Platzner","first_name":"Marco"}],"date_created":"2020-03-02T15:49:38Z","date_updated":"2022-01-06T06:52:45Z","publisher":"ACM","conference":{"name":"ACM Great Lakes Symposium on VLSI (GLSVLSI) 2020","location":"Beijing, China"},"doi":"10.1145/3386263.3406952","title":"A Hybrid Synthesis Methodology for Approximate Circuits","publication_status":"published","page":"421-426","citation":{"bibtex":"@inproceedings{Awais_Ghasemzadeh Mohammadi_Platzner_2020, title={A Hybrid Synthesis Methodology for Approximate Circuits}, DOI={<a href=\"https://doi.org/10.1145/3386263.3406952\">10.1145/3386263.3406952</a>}, booktitle={Proceedings of the 30th ACM Great Lakes Symposium on VLSI (GLSVLSI) 2020}, publisher={ACM}, author={Awais, Muhammad and Ghasemzadeh Mohammadi, Hassan and Platzner, Marco}, year={2020}, pages={421–426} }","mla":"Awais, Muhammad, et al. “A Hybrid Synthesis Methodology for Approximate Circuits.” <i>Proceedings of the 30th ACM Great Lakes Symposium on VLSI (GLSVLSI) 2020</i>, ACM, 2020, pp. 421–26, doi:<a href=\"https://doi.org/10.1145/3386263.3406952\">10.1145/3386263.3406952</a>.","short":"M. Awais, H. Ghasemzadeh Mohammadi, M. Platzner, in: Proceedings of the 30th ACM Great Lakes Symposium on VLSI (GLSVLSI) 2020, ACM, 2020, pp. 421–426.","apa":"Awais, M., Ghasemzadeh Mohammadi, H., &#38; Platzner, M. (2020). A Hybrid Synthesis Methodology for Approximate Circuits. In <i>Proceedings of the 30th ACM Great Lakes Symposium on VLSI (GLSVLSI) 2020</i> (pp. 421–426). Beijing, China: ACM. <a href=\"https://doi.org/10.1145/3386263.3406952\">https://doi.org/10.1145/3386263.3406952</a>","chicago":"Awais, Muhammad, Hassan Ghasemzadeh Mohammadi, and Marco Platzner. “A Hybrid Synthesis Methodology for Approximate Circuits.” In <i>Proceedings of the 30th ACM Great Lakes Symposium on VLSI (GLSVLSI) 2020</i>, 421–26. ACM, 2020. <a href=\"https://doi.org/10.1145/3386263.3406952\">https://doi.org/10.1145/3386263.3406952</a>.","ieee":"M. Awais, H. Ghasemzadeh Mohammadi, and M. Platzner, “A Hybrid Synthesis Methodology for Approximate Circuits,” in <i>Proceedings of the 30th ACM Great Lakes Symposium on VLSI (GLSVLSI) 2020</i>, Beijing, China, 2020, pp. 421–426.","ama":"Awais M, Ghasemzadeh Mohammadi H, Platzner M. A Hybrid Synthesis Methodology for Approximate Circuits. In: <i>Proceedings of the 30th ACM Great Lakes Symposium on VLSI (GLSVLSI) 2020</i>. ACM; 2020:421-426. doi:<a href=\"https://doi.org/10.1145/3386263.3406952\">10.1145/3386263.3406952</a>"},"year":"2020","department":[{"_id":"78"}],"user_id":"64665","_id":"16213","language":[{"iso":"eng"}],"publication":"Proceedings of the 30th ACM Great Lakes Symposium on VLSI (GLSVLSI) 2020","type":"conference","status":"public","abstract":[{"text":"Automated synthesis of approximate circuits via functional approximations is of prominent importance to provide efficiency in energy, runtime, and chip area required to execute an application. Approximate circuits are usually obtained either through analytical approximation methods leveraging approximate transformations such as bit-width scaling or via iterative search-based optimization methods when a library of approximate components, e.g., approximate adders and multipliers, is available. For the latter, exploring the extremely large design space is challenging in terms of both computations and quality of results. While the combination of both methods can create more room for further approximations, the \\textit{Design Space Exploration}~(DSE) becomes a crucial issue. In this paper, we present such a hybrid synthesis methodology that applies a low-cost analytical method followed by parallel stochastic search-based optimization. We address the DSE challenge through efficient pruning of the design space and skipping unnecessary expensive testing and/or verification steps. The experimental results reveal up to 10.57x area savings in comparison with both purely analytical or search-based approaches. ","lang":"eng"}]},{"conference":{"name":"IEEE Conference on Network Softwarization (NetSoft)","start_date":"2020-06-29","end_date":"2020-07-3","location":"Ghent, Belgium"},"title":"5GOS: Demonstrating multi-domain orchestration of end-to-end virtual RAN services","date_created":"2020-03-03T11:49:41Z","author":[{"first_name":"Daniel","last_name":"Camps-Mur","full_name":"Camps-Mur, Daniel"},{"first_name":"Ferran","full_name":" Canellas, Ferran","last_name":" Canellas"},{"first_name":"Azahar","last_name":"Machwe","full_name":"Machwe, Azahar"},{"first_name":"Jorge","last_name":"Paracuellos","full_name":"Paracuellos, Jorge"},{"full_name":"Choumas, Kostas","last_name":"Choumas","first_name":"Kostas"},{"last_name":"Giatsios","full_name":"Giatsios, Dimitris","first_name":"Dimitris"},{"last_name":"Korakis","full_name":"Korakis, Thanasis","first_name":"Thanasis"},{"full_name":"Razzaghi Kouchaksaraei, Hadi","id":"60845","last_name":"Razzaghi Kouchaksaraei","first_name":"Hadi"}],"date_updated":"2022-01-06T06:52:45Z","citation":{"ama":"Camps-Mur D,  Canellas F, Machwe A, et al. 5GOS: Demonstrating multi-domain orchestration of end-to-end virtual RAN services. In: <i>The 6th IEEE International Conference on Network Softwarization (IEEE NetSoft 2020)</i>.","chicago":"Camps-Mur, Daniel, Ferran  Canellas, Azahar Machwe, Jorge Paracuellos, Kostas Choumas, Dimitris Giatsios, Thanasis Korakis, and Hadi Razzaghi Kouchaksaraei. “5GOS: Demonstrating Multi-Domain Orchestration of End-to-End Virtual RAN Services.” In <i>The 6th IEEE International Conference on Network Softwarization (IEEE NetSoft 2020)</i>, n.d.","ieee":"D. Camps-Mur <i>et al.</i>, “5GOS: Demonstrating multi-domain orchestration of end-to-end virtual RAN services,” in <i>the 6th IEEE International Conference on Network Softwarization (IEEE NetSoft 2020)</i>, Ghent, Belgium.","apa":"Camps-Mur, D.,  Canellas, F., Machwe, A., Paracuellos, J., Choumas, K., Giatsios, D., … Razzaghi Kouchaksaraei, H. (n.d.). 5GOS: Demonstrating multi-domain orchestration of end-to-end virtual RAN services. In <i>the 6th IEEE International Conference on Network Softwarization (IEEE NetSoft 2020)</i>. Ghent, Belgium.","short":"D. Camps-Mur, F.  Canellas, A. Machwe, J. Paracuellos, K. Choumas, D. Giatsios, T. Korakis, H. Razzaghi Kouchaksaraei, in: The 6th IEEE International Conference on Network Softwarization (IEEE NetSoft 2020), n.d.","bibtex":"@inproceedings{Camps-Mur_ Canellas_Machwe_Paracuellos_Choumas_Giatsios_Korakis_Razzaghi Kouchaksaraei, title={5GOS: Demonstrating multi-domain orchestration of end-to-end virtual RAN services}, booktitle={the 6th IEEE International Conference on Network Softwarization (IEEE NetSoft 2020)}, author={Camps-Mur, Daniel and  Canellas, Ferran and Machwe, Azahar and Paracuellos, Jorge and Choumas, Kostas and Giatsios, Dimitris and Korakis, Thanasis and Razzaghi Kouchaksaraei, Hadi} }","mla":"Camps-Mur, Daniel, et al. “5GOS: Demonstrating Multi-Domain Orchestration of End-to-End Virtual RAN Services.” <i>The 6th IEEE International Conference on Network Softwarization (IEEE NetSoft 2020)</i>."},"year":"2020","publication_status":"accepted","language":[{"iso":"eng"}],"keyword":["Orchestration","multi-domain","cellular network virtualization","SDN","5G"],"user_id":"60845","_id":"16218","project":[{"grant_number":"762057","name":"5G Programmable Infrastructure Converging disaggregated neTwork and compUte Resources","_id":"23"}],"status":"public","abstract":[{"lang":"eng","text":"Despite recent progress in orchestration of Virtual Network Functions (VNFs) and in multi-technology SDN connectivity, the automated provisioning of end-to-end network services composed of virtual functions deployed across distributed compute locations remains an open challenge. This problem is especially relevant to support the deployment of future 5G networks, comprising virtual access and core network functions connected through a potentially multi-domain transport network.\r\nIn this paper, we present and demonstrate the 5GOS, a lightweight end-to-end orchestration framework that enables the\r\nautomated provisioning of virtual radio access network services. Using an experimental multi-domain testbed we demonstrate that the 5GOS can provision multi-domain virtual Wi-Fi and LTE services in less than three minutes."}],"publication":"the 6th IEEE International Conference on Network Softwarization (IEEE NetSoft 2020)","type":"conference"},{"ddc":["000"],"language":[{"iso":"eng"}],"publication":"IEEE Conference on Network Softwarization (NetSoft)","abstract":[{"lang":"eng","text":"Network function virtualization (NFV) proposes\r\nto replace physical middleboxes with more flexible virtual\r\nnetwork functions (VNFs). To dynamically adjust to everchanging\r\ntraffic demands, VNFs have to be instantiated and\r\ntheir allocated resources have to be adjusted on demand.\r\nDeciding the amount of allocated resources is non-trivial.\r\nExisting optimization approaches often assume fixed resource\r\nrequirements for each VNF instance. However, this can easily\r\nlead to either waste of resources or bad service quality if too\r\nmany or too few resources are allocated.\r\n\r\nTo solve this problem, we train machine learning models\r\non real VNF data, containing measurements of performance\r\nand resource requirements. For each VNF, the trained models\r\ncan then accurately predict the required resources to handle\r\na certain traffic load. We integrate these machine learning\r\nmodels into an algorithm for joint VNF scaling and placement\r\nand evaluate their impact on resulting VNF placements. Our\r\nevaluation based on real-world data shows that using suitable\r\nmachine learning models effectively avoids over- and underallocation\r\nof resources, leading to up to 12 times lower resource\r\nconsumption and better service quality with up to 4.5 times\r\nlower total delay than using standard fixed resource allocation."}],"file":[{"file_name":"ris_preprint.pdf","access_level":"open_access","file_id":"16220","file_size":476590,"date_created":"2020-03-03T11:42:16Z","creator":"stschn","date_updated":"2020-03-03T11:42:16Z","relation":"main_file","content_type":"application/pdf"}],"publisher":"IEEE","date_created":"2020-03-03T11:42:22Z","title":"Machine Learning for Dynamic Resource Allocation in Network Function Virtualization","year":"2020","_id":"16219","project":[{"grant_number":"761493","name":"5G Development and validation platform for global industry-specific network services and Apps","_id":"28"},{"_id":"1","name":"SFB 901"},{"_id":"4","name":"SFB 901 - Project Area C"},{"_id":"16","name":"SFB 901 - Subproject C4"}],"department":[{"_id":"75"}],"user_id":"35343","file_date_updated":"2020-03-03T11:42:16Z","type":"conference","status":"public","date_updated":"2022-01-06T06:52:46Z","oa":"1","author":[{"first_name":"Stefan Balthasar","full_name":"Schneider, Stefan Balthasar","id":"35343","last_name":"Schneider","orcid":"0000-0001-8210-4011"},{"first_name":"Narayanan Puthenpurayil","last_name":"Satheeschandran","full_name":"Satheeschandran, Narayanan Puthenpurayil"},{"first_name":"Manuel","last_name":"Peuster","full_name":"Peuster, Manuel","id":"13271"},{"first_name":"Holger","last_name":"Karl","id":"126","full_name":"Karl, Holger"}],"conference":{"name":"IEEE Conference on Network Softwarization (NetSoft)","location":"Ghent, Belgium"},"has_accepted_license":"1","citation":{"ama":"Schneider SB, Satheeschandran NP, Peuster M, Karl H. Machine Learning for Dynamic Resource Allocation in Network Function Virtualization. In: <i>IEEE Conference on Network Softwarization (NetSoft)</i>. IEEE; 2020.","chicago":"Schneider, Stefan Balthasar, Narayanan Puthenpurayil Satheeschandran, Manuel Peuster, and Holger Karl. “Machine Learning for Dynamic Resource Allocation in Network Function Virtualization.” In <i>IEEE Conference on Network Softwarization (NetSoft)</i>. IEEE, 2020.","ieee":"S. B. Schneider, N. P. Satheeschandran, M. Peuster, and H. Karl, “Machine Learning for Dynamic Resource Allocation in Network Function Virtualization,” in <i>IEEE Conference on Network Softwarization (NetSoft)</i>, Ghent, Belgium, 2020.","short":"S.B. Schneider, N.P. Satheeschandran, M. Peuster, H. Karl, in: IEEE Conference on Network Softwarization (NetSoft), IEEE, 2020.","mla":"Schneider, Stefan Balthasar, et al. “Machine Learning for Dynamic Resource Allocation in Network Function Virtualization.” <i>IEEE Conference on Network Softwarization (NetSoft)</i>, IEEE, 2020.","bibtex":"@inproceedings{Schneider_Satheeschandran_Peuster_Karl_2020, title={Machine Learning for Dynamic Resource Allocation in Network Function Virtualization}, booktitle={IEEE Conference on Network Softwarization (NetSoft)}, publisher={IEEE}, author={Schneider, Stefan Balthasar and Satheeschandran, Narayanan Puthenpurayil and Peuster, Manuel and Karl, Holger}, year={2020} }","apa":"Schneider, S. B., Satheeschandran, N. P., Peuster, M., &#38; Karl, H. (2020). Machine Learning for Dynamic Resource Allocation in Network Function Virtualization. In <i>IEEE Conference on Network Softwarization (NetSoft)</i>. Ghent, Belgium: IEEE."}},{"_id":"16222","project":[{"grant_number":"761493","_id":"28","name":"5G Development and validation platform for global industry-specific network services and Apps"}],"department":[{"_id":"75"}],"user_id":"35343","language":[{"iso":"eng"}],"publication":"IEEE Conference on Network Softwarization (NetSoft)","type":"conference","status":"public","date_updated":"2022-01-06T06:52:46Z","author":[{"first_name":"A.","full_name":"Zafeiropoulos, A.","last_name":"Zafeiropoulos"},{"last_name":"Fotopoulou","full_name":"Fotopoulou, E.","first_name":"E."},{"last_name":"Peuster","full_name":"Peuster, Manuel","id":"13271","first_name":"Manuel"},{"first_name":"Stefan Balthasar","id":"35343","full_name":"Schneider, Stefan Balthasar","orcid":"0000-0001-8210-4011","last_name":"Schneider"},{"last_name":"Gouvas","full_name":"Gouvas, P.","first_name":"P."},{"last_name":"Behnke","full_name":"Behnke, D.","first_name":"D."},{"last_name":"Müller","full_name":"Müller, M.","first_name":"M."},{"first_name":"P.","full_name":"Bök, P.","last_name":"Bök"},{"last_name":"Trakadas","full_name":"Trakadas, P.","first_name":"P."},{"full_name":"Karkazis, P.","last_name":"Karkazis","first_name":"P."},{"last_name":"Karl","full_name":"Karl, Holger","id":"126","first_name":"Holger"}],"date_created":"2020-03-03T11:51:22Z","title":"Benchmarking and Profiling 5G Verticals' Applications: An Industrial IoT Use Case","year":"2020","citation":{"apa":"Zafeiropoulos, A., Fotopoulou, E., Peuster, M., Schneider, S. B., Gouvas, P., Behnke, D., … Karl, H. (2020). Benchmarking and Profiling 5G Verticals’ Applications: An Industrial IoT Use Case. In <i>IEEE Conference on Network Softwarization (NetSoft)</i>.","bibtex":"@inproceedings{Zafeiropoulos_Fotopoulou_Peuster_Schneider_Gouvas_Behnke_Müller_Bök_Trakadas_Karkazis_et al._2020, title={Benchmarking and Profiling 5G Verticals’ Applications: An Industrial IoT Use Case}, booktitle={IEEE Conference on Network Softwarization (NetSoft)}, author={Zafeiropoulos, A. and Fotopoulou, E. and Peuster, Manuel and Schneider, Stefan Balthasar and Gouvas, P. and Behnke, D. and Müller, M. and Bök, P. and Trakadas, P. and Karkazis, P. and et al.}, year={2020} }","mla":"Zafeiropoulos, A., et al. “Benchmarking and Profiling 5G Verticals’ Applications: An Industrial IoT Use Case.” <i>IEEE Conference on Network Softwarization (NetSoft)</i>, 2020.","short":"A. Zafeiropoulos, E. Fotopoulou, M. Peuster, S.B. Schneider, P. Gouvas, D. Behnke, M. Müller, P. Bök, P. Trakadas, P. Karkazis, H. Karl, in: IEEE Conference on Network Softwarization (NetSoft), 2020.","chicago":"Zafeiropoulos, A., E. Fotopoulou, Manuel Peuster, Stefan Balthasar Schneider, P. Gouvas, D. Behnke, M. Müller, et al. “Benchmarking and Profiling 5G Verticals’ Applications: An Industrial IoT Use Case.” In <i>IEEE Conference on Network Softwarization (NetSoft)</i>, 2020.","ieee":"A. Zafeiropoulos <i>et al.</i>, “Benchmarking and Profiling 5G Verticals’ Applications: An Industrial IoT Use Case,” in <i>IEEE Conference on Network Softwarization (NetSoft)</i>, 2020.","ama":"Zafeiropoulos A, Fotopoulou E, Peuster M, et al. Benchmarking and Profiling 5G Verticals’ Applications: An Industrial IoT Use Case. In: <i>IEEE Conference on Network Softwarization (NetSoft)</i>. ; 2020."}},{"conference":{"name":"Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion","start_date":"2020-02-26","end_date":"2020-02-28","location":"Berchtesgaden"},"title":"Numerische Simulation von Gravidestillationsapparaten mit Metallschäumen","date_created":"2020-03-05T08:11:26Z","author":[{"first_name":"Marc","full_name":"Wende, Marc","id":"71302","last_name":"Wende"},{"last_name":"Kenig","id":"665","full_name":"Kenig, Eugeny","first_name":"Eugeny"}],"date_updated":"2022-01-06T06:52:46Z","citation":{"apa":"Wende, M., &#38; Kenig, E. (2020). Numerische Simulation von Gravidestillationsapparaten mit Metallschäumen. In <i>Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion</i>. Berchtesgaden.","bibtex":"@inproceedings{Wende_Kenig_2020, series={Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion}, title={Numerische Simulation von Gravidestillationsapparaten mit Metallschäumen}, booktitle={Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion}, author={Wende, Marc and Kenig, Eugeny}, year={2020}, collection={Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion} }","mla":"Wende, Marc, and Eugeny Kenig. “Numerische Simulation von Gravidestillationsapparaten Mit Metallschäumen.” <i>Jahrestreffen Der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption Und Extraktion</i>, 2020.","short":"M. Wende, E. Kenig, in: Jahrestreffen Der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption Und Extraktion, 2020.","chicago":"Wende, Marc, and Eugeny Kenig. “Numerische Simulation von Gravidestillationsapparaten Mit Metallschäumen.” In <i>Jahrestreffen Der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption Und Extraktion</i>. Jahrestreffen Der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption Und Extraktion, 2020.","ieee":"M. Wende and E. Kenig, “Numerische Simulation von Gravidestillationsapparaten mit Metallschäumen,” in <i>Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion</i>, Berchtesgaden, 2020.","ama":"Wende M, Kenig E. Numerische Simulation von Gravidestillationsapparaten mit Metallschäumen. In: <i>Jahrestreffen Der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption Und Extraktion</i>. Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion. ; 2020."},"year":"2020","language":[{"iso":"eng"}],"department":[{"_id":"9"},{"_id":"145"}],"user_id":"71302","series_title":"Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion","_id":"16248","status":"public","publication":"Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion","type":"conference_abstract"},{"issue":"1","year":"2020","publisher":"Information Institute Publishing, Washington DC, USA","date_created":"2020-03-05T10:29:00Z","title":"Timing in Information Security: An Event Study on the Impact of Information Security Investment Announcements","publication":"Journal of Information System Security","abstract":[{"text":"Timing plays a crucial role in the context of information security investments. We regard timing in two dimensions, namely the time of announcement in relation to the time of investment and the time of announcement in relation to the time of a fundamental security incident. The financial value of information security investments is assessed by examining the relationship between the investment announcements and their stock market reaction focusing on the two time dimensions. Using an event study methodology, we found that both dimensions influence the stock market return of the investing organization. Our results indicate that (1) after fundamental security incidents in a given industry, the stock price will react more positively to a firm’s announcement of actual information security investments than to announcements of the intention to invest; (2) the stock price will react more positively to a firm’s announcements of the intention to invest after the fundamental security incident compared to before; and (3) the stock price will react more positively to a firm’s announcements of actual information security investments after the fundamental security incident compared to before. Overall, the lowest abnormal return can be expected when the intention to invest is announced before a fundamental information security incident and the highest return when actual investing after a fundamental information security incident in the respective industry.","lang":"eng"}],"file":[{"file_size":478056,"file_name":"Timing in Information Security - JISSEC format PREPUBLICATION.pdf","file_id":"16250","access_level":"open_access","date_updated":"2020-03-05T10:35:49Z","date_created":"2020-03-05T10:26:11Z","creator":"hsiemes","relation":"main_file","content_type":"application/pdf"}],"keyword":["Event Study","Information Security","Investment Announcements","Stock Price Reaction","Value of Information Security Investments"],"ddc":["000"],"language":[{"iso":"eng"}],"has_accepted_license":"1","page":"3 - 31","intvolume":"        16","citation":{"ama":"Szubartowicz E, Schryen G. Timing in Information Security: An Event Study on the Impact of Information Security Investment Announcements. <i>Journal of Information System Security</i>. 2020;16(1):3-31.","ieee":"E. Szubartowicz and G. Schryen, “Timing in Information Security: An Event Study on the Impact of Information Security Investment Announcements,” <i>Journal of Information System Security</i>, vol. 16, no. 1, pp. 3–31, 2020.","chicago":"Szubartowicz, Eva, and Guido Schryen. “Timing in Information Security: An Event Study on the Impact of Information Security Investment Announcements.” <i>Journal of Information System Security</i> 16, no. 1 (2020): 3–31.","short":"E. Szubartowicz, G. Schryen, Journal of Information System Security 16 (2020) 3–31.","mla":"Szubartowicz, Eva, and Guido Schryen. “Timing in Information Security: An Event Study on the Impact of Information Security Investment Announcements.” <i>Journal of Information System Security</i>, vol. 16, no. 1, Information Institute Publishing, Washington DC, USA, 2020, pp. 3–31.","bibtex":"@article{Szubartowicz_Schryen_2020, title={Timing in Information Security: An Event Study on the Impact of Information Security Investment Announcements}, volume={16}, number={1}, journal={Journal of Information System Security}, publisher={Information Institute Publishing, Washington DC, USA}, author={Szubartowicz, Eva and Schryen, Guido}, year={2020}, pages={3–31} }","apa":"Szubartowicz, E., &#38; Schryen, G. (2020). Timing in Information Security: An Event Study on the Impact of Information Security Investment Announcements. <i>Journal of Information System Security</i>, <i>16</i>(1), 3–31."},"date_updated":"2022-01-06T06:52:47Z","oa":"1","volume":16,"author":[{"first_name":"Eva","full_name":"Szubartowicz, Eva","last_name":"Szubartowicz"},{"first_name":"Guido","last_name":"Schryen","full_name":"Schryen, Guido","id":"72850"}],"type":"journal_article","status":"public","_id":"16249","department":[{"_id":"277"}],"user_id":"61579","file_date_updated":"2020-03-05T10:35:49Z"},{"language":[{"iso":"eng"}],"department":[{"_id":"280"},{"_id":"475"}],"user_id":"42447","_id":"16273","status":"public","abstract":[{"lang":"eng","text":"This study examines the gender gap in competitiveness in an educational setting\r\nand tests whether this gap depends on the difficulty of the task at hand. For this purpose,\r\nwe administered a series of experiments during the final exam of a university\r\ncourse. We confronted three cohorts of undergraduate students with a set of bonus\r\nquestions and the choice between an absolute and a tournament grading scheme\r\nfor these questions. To test the moderating impact of task difficulty, we (randomly)\r\nvaried the difficulty of the questions between treatment groups. We find that, on\r\naverage, women are significantly less likely to select the tournament scheme. However,\r\nthe results show that the gender gap in tournament entry is sizable when the\r\nquestions are relative easy, but much smaller and statistical insignificant when the\r\nquestions are difficult."}],"publication":"Labour Economics","type":"journal_article","doi":"10.1016/j.labeco.2020.101815","title":"Gender, competitiveness, and task difficulty: Evidence from the field","author":[{"id":"42447","full_name":"Hoyer, Britta","last_name":"Hoyer","first_name":"Britta"},{"first_name":"Thomas","last_name":"van Huizen","full_name":"van Huizen, Thomas"},{"first_name":"Linda ","full_name":"Keijzer, Linda ","last_name":"Keijzer"},{"first_name":"Sarah ","full_name":"Rezaei, Sarah ","last_name":"Rezaei"},{"full_name":"Rosenkranz, Stephanie","last_name":"Rosenkranz","first_name":"Stephanie"},{"first_name":"Bastian ","last_name":"Westbrock","full_name":"Westbrock, Bastian "}],"date_created":"2020-03-09T12:35:49Z","date_updated":"2022-01-06T06:52:47Z","citation":{"ama":"Hoyer B, van Huizen T, Keijzer L, Rezaei S, Rosenkranz S, Westbrock B. Gender, competitiveness, and task difficulty: Evidence from the field. <i>Labour Economics</i>. 2020. doi:<a href=\"https://doi.org/10.1016/j.labeco.2020.101815\">10.1016/j.labeco.2020.101815</a>","ieee":"B. Hoyer, T. van Huizen, L. Keijzer, S. Rezaei, S. Rosenkranz, and B. Westbrock, “Gender, competitiveness, and task difficulty: Evidence from the field,” <i>Labour Economics</i>, 2020.","chicago":"Hoyer, Britta, Thomas van Huizen, Linda  Keijzer, Sarah  Rezaei, Stephanie Rosenkranz, and Bastian  Westbrock. “Gender, Competitiveness, and Task Difficulty: Evidence from the Field.” <i>Labour Economics</i>, 2020. <a href=\"https://doi.org/10.1016/j.labeco.2020.101815\">https://doi.org/10.1016/j.labeco.2020.101815</a>.","bibtex":"@article{Hoyer_van Huizen_Keijzer_Rezaei_Rosenkranz_Westbrock_2020, title={Gender, competitiveness, and task difficulty: Evidence from the field}, DOI={<a href=\"https://doi.org/10.1016/j.labeco.2020.101815\">10.1016/j.labeco.2020.101815</a>}, journal={Labour Economics}, author={Hoyer, Britta and van Huizen, Thomas and Keijzer, Linda  and Rezaei, Sarah  and Rosenkranz, Stephanie and Westbrock, Bastian }, year={2020} }","short":"B. Hoyer, T. van Huizen, L. Keijzer, S. Rezaei, S. Rosenkranz, B. Westbrock, Labour Economics (2020).","mla":"Hoyer, Britta, et al. “Gender, Competitiveness, and Task Difficulty: Evidence from the Field.” <i>Labour Economics</i>, 2020, doi:<a href=\"https://doi.org/10.1016/j.labeco.2020.101815\">10.1016/j.labeco.2020.101815</a>.","apa":"Hoyer, B., van Huizen, T., Keijzer, L., Rezaei, S., Rosenkranz, S., &#38; Westbrock, B. (2020). Gender, competitiveness, and task difficulty: Evidence from the field. <i>Labour Economics</i>. <a href=\"https://doi.org/10.1016/j.labeco.2020.101815\">https://doi.org/10.1016/j.labeco.2020.101815</a>"},"year":"2020","publication_status":"epub_ahead"},{"date_created":"2020-03-09T13:11:25Z","author":[{"last_name":"Jovanovikj","orcid":"https://orcid.org/0000-0002-1838-794X","id":"39187","full_name":"Jovanovikj, Ivan","first_name":"Ivan"},{"full_name":"Nagaraj, Achyuth","last_name":"Nagaraj","first_name":"Achyuth"},{"first_name":"Enes","id":"8447","full_name":"Yigitbas, Enes","orcid":"0000-0002-5967-833X","last_name":"Yigitbas"},{"full_name":"Anjorin, Anthony","last_name":"Anjorin","first_name":"Anthony"},{"first_name":"Stefan","id":"447","full_name":"Sauer, Stefan","last_name":"Sauer"},{"last_name":"Engels","full_name":"Engels, Gregor","id":"107","first_name":"Gregor"}],"date_updated":"2022-01-06T06:52:47Z","publisher":"ACM","conference":{"location":"Seoul","name":"1st IEEE/ACM International Conference on Automation of Software Test (AST 2020)"},"title":"Validating Test Case Migration via Mutation Analysis ","citation":{"apa":"Jovanovikj, I., Nagaraj, A., Yigitbas, E., Anjorin, A., Sauer, S., &#38; Engels, G. (2020). Validating Test Case Migration via Mutation Analysis . In <i>Proceedings of the 1st IEEE/ACM International Conference on Automation of Software Test AST</i> (pp. 31–40). Seoul: ACM.","short":"I. Jovanovikj, A. Nagaraj, E. Yigitbas, A. Anjorin, S. Sauer, G. Engels, in: Proceedings of the 1st IEEE/ACM International Conference on Automation of Software Test AST, ACM, 2020, pp. 31–40.","bibtex":"@inproceedings{Jovanovikj_Nagaraj_Yigitbas_Anjorin_Sauer_Engels_2020, title={Validating Test Case Migration via Mutation Analysis }, booktitle={Proceedings of the 1st IEEE/ACM International Conference on Automation of Software Test AST}, publisher={ACM}, author={Jovanovikj, Ivan and Nagaraj, Achyuth and Yigitbas, Enes and Anjorin, Anthony and Sauer, Stefan and Engels, Gregor}, year={2020}, pages={31–40} }","mla":"Jovanovikj, Ivan, et al. “Validating Test Case Migration via Mutation Analysis .” <i>Proceedings of the 1st IEEE/ACM International Conference on Automation of Software Test AST</i>, ACM, 2020, pp. 31–40.","ama":"Jovanovikj I, Nagaraj A, Yigitbas E, Anjorin A, Sauer S, Engels G. Validating Test Case Migration via Mutation Analysis . In: <i>Proceedings of the 1st IEEE/ACM International Conference on Automation of Software Test AST</i>. ACM; 2020:31-40.","chicago":"Jovanovikj, Ivan, Achyuth Nagaraj, Enes Yigitbas, Anthony Anjorin, Stefan Sauer, and Gregor Engels. “Validating Test Case Migration via Mutation Analysis .” In <i>Proceedings of the 1st IEEE/ACM International Conference on Automation of Software Test AST</i>, 31–40. ACM, 2020.","ieee":"I. Jovanovikj, A. Nagaraj, E. Yigitbas, A. Anjorin, S. Sauer, and G. Engels, “Validating Test Case Migration via Mutation Analysis ,” in <i>Proceedings of the 1st IEEE/ACM International Conference on Automation of Software Test AST</i>, Seoul, 2020, pp. 31–40."},"page":"31-40","year":"2020","user_id":"8447","department":[{"_id":"66"},{"_id":"534"}],"_id":"16274","language":[{"iso":"eng"}],"type":"conference","publication":"Proceedings of the 1st IEEE/ACM International Conference on Automation of Software Test AST","status":"public"},{"publication_status":"published","publication_identifier":{"issn":["2214-2096"]},"citation":{"apa":"Nomikos, N., Michailidis, E. T., Trakadas, P., Vouyioukas, D., Karl, H., Martrat, J., … Voliotis, S. (2020). A UAV-based moving 5G RAN for massive connectivity of mobile users and IoT devices. <i>Vehicular Communications</i>. <a href=\"https://doi.org/10.1016/j.vehcom.2020.100250\">https://doi.org/10.1016/j.vehcom.2020.100250</a>","mla":"Nomikos, Nikolaos, et al. “A UAV-Based Moving 5G RAN for Massive Connectivity of Mobile Users and IoT Devices.” <i>Vehicular Communications</i>, 100250, 2020, doi:<a href=\"https://doi.org/10.1016/j.vehcom.2020.100250\">10.1016/j.vehcom.2020.100250</a>.","bibtex":"@article{Nomikos_Michailidis_Trakadas_Vouyioukas_Karl_Martrat_Zahariadis_Papadopoulos_Voliotis_2020, title={A UAV-based moving 5G RAN for massive connectivity of mobile users and IoT devices}, DOI={<a href=\"https://doi.org/10.1016/j.vehcom.2020.100250\">10.1016/j.vehcom.2020.100250</a>}, number={100250}, journal={Vehicular Communications}, author={Nomikos, Nikolaos and Michailidis, Emmanouel T. and Trakadas, Panagiotis and Vouyioukas, Demosthenes and Karl, Holger and Martrat, Josep and Zahariadis, Theodore and Papadopoulos, Konstantinos and Voliotis, Stamatis}, year={2020} }","short":"N. Nomikos, E.T. Michailidis, P. Trakadas, D. Vouyioukas, H. Karl, J. Martrat, T. Zahariadis, K. Papadopoulos, S. Voliotis, Vehicular Communications (2020).","ama":"Nomikos N, Michailidis ET, Trakadas P, et al. A UAV-based moving 5G RAN for massive connectivity of mobile users and IoT devices. <i>Vehicular Communications</i>. 2020. doi:<a href=\"https://doi.org/10.1016/j.vehcom.2020.100250\">10.1016/j.vehcom.2020.100250</a>","chicago":"Nomikos, Nikolaos, Emmanouel T. Michailidis, Panagiotis Trakadas, Demosthenes Vouyioukas, Holger Karl, Josep Martrat, Theodore Zahariadis, Konstantinos Papadopoulos, and Stamatis Voliotis. “A UAV-Based Moving 5G RAN for Massive Connectivity of Mobile Users and IoT Devices.” <i>Vehicular Communications</i>, 2020. <a href=\"https://doi.org/10.1016/j.vehcom.2020.100250\">https://doi.org/10.1016/j.vehcom.2020.100250</a>.","ieee":"N. Nomikos <i>et al.</i>, “A UAV-based moving 5G RAN for massive connectivity of mobile users and IoT devices,” <i>Vehicular Communications</i>, 2020."},"year":"2020","author":[{"first_name":"Nikolaos","full_name":"Nomikos, Nikolaos","last_name":"Nomikos"},{"full_name":"Michailidis, Emmanouel T.","last_name":"Michailidis","first_name":"Emmanouel T."},{"first_name":"Panagiotis","last_name":"Trakadas","full_name":"Trakadas, Panagiotis"},{"full_name":"Vouyioukas, Demosthenes","last_name":"Vouyioukas","first_name":"Demosthenes"},{"first_name":"Holger","last_name":"Karl","id":"126","full_name":"Karl, Holger"},{"first_name":"Josep","full_name":"Martrat, Josep","last_name":"Martrat"},{"full_name":"Zahariadis, Theodore","last_name":"Zahariadis","first_name":"Theodore"},{"first_name":"Konstantinos","full_name":"Papadopoulos, Konstantinos","last_name":"Papadopoulos"},{"first_name":"Stamatis","full_name":"Voliotis, Stamatis","last_name":"Voliotis"}],"date_created":"2020-03-10T15:59:56Z","date_updated":"2022-01-06T06:52:48Z","doi":"10.1016/j.vehcom.2020.100250","title":"A UAV-based moving 5G RAN for massive connectivity of mobile users and IoT devices","type":"journal_article","publication":"Vehicular Communications","status":"public","abstract":[{"text":"Currently, the coexistence of multiple users and devices challenges the network's ability to reliably connect them. This article proposes a novel communication architecture that satisfies the requirements of fifth-generation (5G) mobile network applications. In particular, this architecture extends and combines ultra-dense networking (UDN), multi-access edge computing (MEC), and virtual infrastructure manager (VIM) concepts to provide a flexible network of moving radio access (RA) nodes, flying or moving to areas where users and devices struggle for connectivity and data rate. Furthermore, advances in radio communications and non-orthogonal multiple access (NOMA), virtualization technologies and energy-awareness mechanisms are integrated towards a mobile UDN that not only allows RA nodes to follow the user but also enables the virtualized network functions (VNFs) to adapt to user mobility by migrating from one node to another. Performance evaluation shows that the underlying network improves connectivity of users and devices through the flexible deployment of moving RA nodes and the use of NOMA.","lang":"eng"}],"user_id":"126","department":[{"_id":"75"}],"_id":"16278","language":[{"iso":"eng"}],"article_number":"100250"},{"language":[{"iso":"eng"}],"user_id":"126","department":[{"_id":"75"}],"_id":"16280","status":"public","abstract":[{"lang":"eng","text":"Assigning bands of the wireless spectrum as resources to users is a common problem in wireless networks. Typically, frequency bands were assumed to be available in a stable manner. Nevertheless, in recent scenarios where wireless networks may be deployed in unknown environments, spectrum competition is considered, making it uncertain whether a frequency band is available at all or at what quality. To fully exploit such resources with uncertain availability, the multi-armed bandit (MAB) method, a representative online learning technique, has been applied to design spectrum scheduling algorithms. This article surveys such proposals. We describe the following three aspects: how to model spectrum scheduling problems within the MAB framework, what the main thread is following which prevalent algorithms are designed, and how to evaluate algorithm performance and complexity. We also give some promising directions for future research in related fields."}],"type":"journal_article","publication":"IEEE Wireless Communications","doi":"10.1109/mwc.001.1900280","title":"Multi-Armed-Bandit-Based Spectrum Scheduling Algorithms in Wireless Networks: A Survey","author":[{"last_name":"Li","full_name":"Li, Feng","first_name":"Feng"},{"full_name":"Yu, Dongxiao","last_name":"Yu","first_name":"Dongxiao"},{"last_name":"Yang","full_name":"Yang, Huan","first_name":"Huan"},{"first_name":"Jiguo","full_name":"Yu, Jiguo","last_name":"Yu"},{"first_name":"Holger","last_name":"Karl","id":"126","full_name":"Karl, Holger"},{"full_name":"Cheng, Xiuzhen","last_name":"Cheng","first_name":"Xiuzhen"}],"date_created":"2020-03-10T16:02:30Z","date_updated":"2022-01-06T06:52:48Z","citation":{"ama":"Li F, Yu D, Yang H, Yu J, Karl H, Cheng X. Multi-Armed-Bandit-Based Spectrum Scheduling Algorithms in Wireless Networks: A Survey. <i>IEEE Wireless Communications</i>. 2020:24-30. doi:<a href=\"https://doi.org/10.1109/mwc.001.1900280\">10.1109/mwc.001.1900280</a>","chicago":"Li, Feng, Dongxiao Yu, Huan Yang, Jiguo Yu, Holger Karl, and Xiuzhen Cheng. “Multi-Armed-Bandit-Based Spectrum Scheduling Algorithms in Wireless Networks: A Survey.” <i>IEEE Wireless Communications</i>, 2020, 24–30. <a href=\"https://doi.org/10.1109/mwc.001.1900280\">https://doi.org/10.1109/mwc.001.1900280</a>.","ieee":"F. Li, D. Yu, H. Yang, J. Yu, H. Karl, and X. Cheng, “Multi-Armed-Bandit-Based Spectrum Scheduling Algorithms in Wireless Networks: A Survey,” <i>IEEE Wireless Communications</i>, pp. 24–30, 2020.","bibtex":"@article{Li_Yu_Yang_Yu_Karl_Cheng_2020, title={Multi-Armed-Bandit-Based Spectrum Scheduling Algorithms in Wireless Networks: A Survey}, DOI={<a href=\"https://doi.org/10.1109/mwc.001.1900280\">10.1109/mwc.001.1900280</a>}, journal={IEEE Wireless Communications}, author={Li, Feng and Yu, Dongxiao and Yang, Huan and Yu, Jiguo and Karl, Holger and Cheng, Xiuzhen}, year={2020}, pages={24–30} }","short":"F. Li, D. Yu, H. Yang, J. Yu, H. Karl, X. Cheng, IEEE Wireless Communications (2020) 24–30.","mla":"Li, Feng, et al. “Multi-Armed-Bandit-Based Spectrum Scheduling Algorithms in Wireless Networks: A Survey.” <i>IEEE Wireless Communications</i>, 2020, pp. 24–30, doi:<a href=\"https://doi.org/10.1109/mwc.001.1900280\">10.1109/mwc.001.1900280</a>.","apa":"Li, F., Yu, D., Yang, H., Yu, J., Karl, H., &#38; Cheng, X. (2020). Multi-Armed-Bandit-Based Spectrum Scheduling Algorithms in Wireless Networks: A Survey. <i>IEEE Wireless Communications</i>, 24–30. <a href=\"https://doi.org/10.1109/mwc.001.1900280\">https://doi.org/10.1109/mwc.001.1900280</a>"},"page":"24-30","year":"2020","publication_status":"published","publication_identifier":{"issn":["1536-1284","1558-0687"]}},{"keyword":["Town Center Management","High Street Retail","Recommender Systems","Geospatial Recommendations","Design Science Research"],"ddc":["000"],"language":[{"iso":"eng"}],"publication":"Proceedings of the 15th International Conference on Wirtschaftsinformatik","abstract":[{"lang":"eng","text":"To  decide  in  which  part  of  town to  open  stores,  high  street  retailers consult  statistical  data  on  customers  and  cities,  but  they  cannot  analyze  their customers’  shopping  behavior  and  geospatial  features  of  a  city  due  to  missing data.  While  previous  research  has  proposed  recommendation  systems  and decision  aids  that  address  this  type  of  decision  problem –  including  factory location  and  assortment  planning –  there  currently  is no design  knowledge available  to  prescribe  the  design  of  city  center  area  recommendation  systems (CCARS).   We   set   out   to   design   a   software   prototype   considering   local customers’  shopping  interests  and  geospatial  data  on  their  shopping  trips  for retail site selection.  With real data on 500 customers and 1,100 shopping trips, we demonstrate and evaluate our IT artifact. Our results illustrate how retailers and public town center managers can use CCARS for spatial location selection, growing retailers’ profits and a city center’s attractiveness for its citizens."}],"file":[{"content_type":"application/pdf","success":1,"relation":"main_file","date_updated":"2020-03-13T06:58:54Z","creator":"pzh","date_created":"2020-03-13T06:58:54Z","file_size":1370273,"file_name":"E1_City_recommendations_Master_final.pdf","file_id":"16286","access_level":"closed"}],"date_created":"2020-03-13T07:05:24Z","title":"Designing City Center Area Recommendation Systems ","quality_controlled":"1","year":"2020","_id":"16285","project":[{"name":"​Interaktive Einkaufserlebnisse in Innenstädten durch digitale Dienstleistungen","_id":"35","grant_number":"​02K15A073"}],"department":[{"_id":"526"}],"user_id":"64394","file_date_updated":"2020-03-13T06:58:54Z","type":"conference","status":"public","oa":"1","date_updated":"2022-01-06T06:52:48Z","author":[{"full_name":"zur Heiden, Philipp","id":"64394","last_name":"zur Heiden","first_name":"Philipp"},{"id":"53344","full_name":"Berendes, Carsten Ingo","last_name":"Berendes","first_name":"Carsten Ingo"},{"id":"59677","full_name":"Beverungen, Daniel","last_name":"Beverungen","first_name":"Daniel"}],"doi":"doi.org/10.30844/wi_2020_e1-heiden","conference":{"name":"15th International Conference on Wirtschaftsinformatik","start_date":"2020-03-07","end_date":"2020-03-11","location":"Potsdam"},"main_file_link":[{"open_access":"1","url":"https://library.gito.de/open-access-pdf/E1_City_recommendations_Master_final.pdf"}],"has_accepted_license":"1","publication_status":"published","place":"Potsdam","citation":{"bibtex":"@inproceedings{zur Heiden_Berendes_Beverungen_2020, place={Potsdam}, title={Designing City Center Area Recommendation Systems }, DOI={<a href=\"https://doi.org/doi.org/10.30844/wi_2020_e1-heiden\">doi.org/10.30844/wi_2020_e1-heiden</a>}, booktitle={Proceedings of the 15th International Conference on Wirtschaftsinformatik}, author={zur Heiden, Philipp and Berendes, Carsten Ingo and Beverungen, Daniel}, year={2020} }","short":"P. zur Heiden, C.I. Berendes, D. Beverungen, in: Proceedings of the 15th International Conference on Wirtschaftsinformatik, Potsdam, 2020.","mla":"zur Heiden, Philipp, et al. “Designing City Center Area Recommendation Systems .” <i>Proceedings of the 15th International Conference on Wirtschaftsinformatik</i>, 2020, doi:<a href=\"https://doi.org/doi.org/10.30844/wi_2020_e1-heiden\">doi.org/10.30844/wi_2020_e1-heiden</a>.","apa":"zur Heiden, P., Berendes, C. I., &#38; Beverungen, D. (2020). Designing City Center Area Recommendation Systems . In <i>Proceedings of the 15th International Conference on Wirtschaftsinformatik</i>. Potsdam. <a href=\"https://doi.org/doi.org/10.30844/wi_2020_e1-heiden\">https://doi.org/doi.org/10.30844/wi_2020_e1-heiden</a>","ieee":"P. zur Heiden, C. I. Berendes, and D. Beverungen, “Designing City Center Area Recommendation Systems ,” in <i>Proceedings of the 15th International Conference on Wirtschaftsinformatik</i>, Potsdam, 2020.","chicago":"Heiden, Philipp zur, Carsten Ingo Berendes, and Daniel Beverungen. “Designing City Center Area Recommendation Systems .” In <i>Proceedings of the 15th International Conference on Wirtschaftsinformatik</i>. Potsdam, 2020. <a href=\"https://doi.org/doi.org/10.30844/wi_2020_e1-heiden\">https://doi.org/doi.org/10.30844/wi_2020_e1-heiden</a>.","ama":"zur Heiden P, Berendes CI, Beverungen D. Designing City Center Area Recommendation Systems . In: <i>Proceedings of the 15th International Conference on Wirtschaftsinformatik</i>. Potsdam; 2020. doi:<a href=\"https://doi.org/doi.org/10.30844/wi_2020_e1-heiden\">doi.org/10.30844/wi_2020_e1-heiden</a>"}},{"intvolume":"       406","citation":{"apa":"Klus, S., Nüske, F., Peitz, S., Niemann, J.-H., Clementi, C., &#38; Schütte, C. (2020). Data-driven approximation of the Koopman generator: Model reduction, system identification, and control. <i>Physica D: Nonlinear Phenomena</i>, <i>406</i>. <a href=\"https://doi.org/10.1016/j.physd.2020.132416\">https://doi.org/10.1016/j.physd.2020.132416</a>","mla":"Klus, Stefan, et al. “Data-Driven Approximation of the Koopman Generator: Model Reduction, System Identification, and Control.” <i>Physica D: Nonlinear Phenomena</i>, vol. 406, 132416, 2020, doi:<a href=\"https://doi.org/10.1016/j.physd.2020.132416\">10.1016/j.physd.2020.132416</a>.","short":"S. Klus, F. Nüske, S. Peitz, J.-H. Niemann, C. Clementi, C. Schütte, Physica D: Nonlinear Phenomena 406 (2020).","bibtex":"@article{Klus_Nüske_Peitz_Niemann_Clementi_Schütte_2020, title={Data-driven approximation of the Koopman generator: Model reduction, system identification, and control}, volume={406}, DOI={<a href=\"https://doi.org/10.1016/j.physd.2020.132416\">10.1016/j.physd.2020.132416</a>}, number={132416}, journal={Physica D: Nonlinear Phenomena}, author={Klus, Stefan and Nüske, Feliks and Peitz, Sebastian and Niemann, Jan-Hendrik and Clementi, Cecilia and Schütte, Christof}, year={2020} }","ieee":"S. Klus, F. Nüske, S. Peitz, J.-H. Niemann, C. Clementi, and C. Schütte, “Data-driven approximation of the Koopman generator: Model reduction, system identification, and control,” <i>Physica D: Nonlinear Phenomena</i>, vol. 406, 2020.","chicago":"Klus, Stefan, Feliks Nüske, Sebastian Peitz, Jan-Hendrik Niemann, Cecilia Clementi, and Christof Schütte. “Data-Driven Approximation of the Koopman Generator: Model Reduction, System Identification, and Control.” <i>Physica D: Nonlinear Phenomena</i> 406 (2020). <a href=\"https://doi.org/10.1016/j.physd.2020.132416\">https://doi.org/10.1016/j.physd.2020.132416</a>.","ama":"Klus S, Nüske F, Peitz S, Niemann J-H, Clementi C, Schütte C. Data-driven approximation of the Koopman generator: Model reduction, system identification, and control. <i>Physica D: Nonlinear Phenomena</i>. 2020;406. doi:<a href=\"https://doi.org/10.1016/j.physd.2020.132416\">10.1016/j.physd.2020.132416</a>"},"year":"2020","publication_identifier":{"issn":["0167-2789"]},"publication_status":"published","doi":"10.1016/j.physd.2020.132416","title":"Data-driven approximation of the Koopman generator: Model reduction, system identification, and control","volume":406,"author":[{"first_name":"Stefan","last_name":"Klus","full_name":"Klus, Stefan"},{"full_name":"Nüske, Feliks","id":"81513","orcid":"0000-0003-2444-7889","last_name":"Nüske","first_name":"Feliks"},{"last_name":"Peitz","orcid":"https://orcid.org/0000-0002-3389-793X","id":"47427","full_name":"Peitz, Sebastian","first_name":"Sebastian"},{"first_name":"Jan-Hendrik","last_name":"Niemann","full_name":"Niemann, Jan-Hendrik"},{"last_name":"Clementi","full_name":"Clementi, Cecilia","first_name":"Cecilia"},{"first_name":"Christof","full_name":"Schütte, Christof","last_name":"Schütte"}],"date_created":"2020-03-13T12:35:40Z","date_updated":"2022-01-06T06:52:48Z","status":"public","abstract":[{"lang":"eng","text":"We derive a data-driven method for the approximation of the Koopman generator called gEDMD, which can be regarded as a straightforward extension of EDMD (extended dynamic mode decomposition). This approach is applicable to deterministic and stochastic dynamical systems. It can be used for computing eigenvalues, eigenfunctions, and modes of the generator and for system identification. In addition to learning the governing equations of deterministic systems, which then reduces to SINDy (sparse identification of nonlinear dynamics), it is possible to identify the drift and diffusion terms of stochastic differential equations from data. Moreover, we apply gEDMD to derive coarse-grained models of high-dimensional systems, and also to determine efficient model predictive control strategies. We highlight relationships with other methods and demonstrate the efficacy of the proposed methods using several guiding examples and prototypical molecular dynamics problems."}],"publication":"Physica D: Nonlinear Phenomena","type":"journal_article","language":[{"iso":"eng"}],"article_number":"132416","department":[{"_id":"101"}],"user_id":"47427","_id":"16288"},{"publication_status":"published","publication_identifier":{"issn":["0170-8643","1610-7411"],"isbn":["9783030357122","9783030357139"]},"place":"Cham","citation":{"ieee":"S. Peitz and S. Klus, “Feedback Control of Nonlinear PDEs Using Data-Efficient Reduced Order Models Based on the Koopman Operator,” in <i>Lecture Notes in Control and Information Sciences</i>, vol. 484, Cham: Springer, 2020, pp. 257–282.","chicago":"Peitz, Sebastian, and Stefan Klus. “Feedback Control of Nonlinear PDEs Using Data-Efficient Reduced Order Models Based on the Koopman Operator.” In <i>Lecture Notes in Control and Information Sciences</i>, 484:257–82. Lecture Notes in Control and Information Sciences. Cham: Springer, 2020. <a href=\"https://doi.org/10.1007/978-3-030-35713-9_10\">https://doi.org/10.1007/978-3-030-35713-9_10</a>.","ama":"Peitz S, Klus S. Feedback Control of Nonlinear PDEs Using Data-Efficient Reduced Order Models Based on the Koopman Operator. In: <i>Lecture Notes in Control and Information Sciences</i>. Vol 484. Lecture Notes in Control and Information Sciences. Cham: Springer; 2020:257-282. doi:<a href=\"https://doi.org/10.1007/978-3-030-35713-9_10\">10.1007/978-3-030-35713-9_10</a>","bibtex":"@inbook{Peitz_Klus_2020, place={Cham}, series={Lecture Notes in Control and Information Sciences}, title={Feedback Control of Nonlinear PDEs Using Data-Efficient Reduced Order Models Based on the Koopman Operator}, volume={484}, DOI={<a href=\"https://doi.org/10.1007/978-3-030-35713-9_10\">10.1007/978-3-030-35713-9_10</a>}, booktitle={Lecture Notes in Control and Information Sciences}, publisher={Springer}, author={Peitz, Sebastian and Klus, Stefan}, year={2020}, pages={257–282}, collection={Lecture Notes in Control and Information Sciences} }","mla":"Peitz, Sebastian, and Stefan Klus. “Feedback Control of Nonlinear PDEs Using Data-Efficient Reduced Order Models Based on the Koopman Operator.” <i>Lecture Notes in Control and Information Sciences</i>, vol. 484, Springer, 2020, pp. 257–82, doi:<a href=\"https://doi.org/10.1007/978-3-030-35713-9_10\">10.1007/978-3-030-35713-9_10</a>.","short":"S. Peitz, S. Klus, in: Lecture Notes in Control and Information Sciences, Springer, Cham, 2020, pp. 257–282.","apa":"Peitz, S., &#38; Klus, S. (2020). Feedback Control of Nonlinear PDEs Using Data-Efficient Reduced Order Models Based on the Koopman Operator. In <i>Lecture Notes in Control and Information Sciences</i> (Vol. 484, pp. 257–282). Cham: Springer. <a href=\"https://doi.org/10.1007/978-3-030-35713-9_10\">https://doi.org/10.1007/978-3-030-35713-9_10</a>"},"intvolume":"       484","page":"257-282","date_updated":"2022-01-06T06:52:48Z","author":[{"orcid":"https://orcid.org/0000-0002-3389-793X","last_name":"Peitz","full_name":"Peitz, Sebastian","id":"47427","first_name":"Sebastian"},{"last_name":"Klus","full_name":"Klus, Stefan","first_name":"Stefan"}],"volume":484,"doi":"10.1007/978-3-030-35713-9_10","type":"book_chapter","status":"public","_id":"16289","series_title":"Lecture Notes in Control and Information Sciences","user_id":"47427","department":[{"_id":"101"}],"year":"2020","publisher":"Springer","date_created":"2020-03-13T12:38:52Z","title":"Feedback Control of Nonlinear PDEs Using Data-Efficient Reduced Order Models Based on the Koopman Operator","publication":"Lecture Notes in Control and Information Sciences","abstract":[{"text":"In the development of model predictive controllers for PDE-constrained problems, the use of reduced order models is essential to enable real-time applicability. Besides local linearization approaches, proper orthogonal decomposition (POD) has been most widely used in the past in order to derive such models. Due to the huge advances concerning both theory as well as the numerical approximation, a very promising alternative based on the Koopman operator has recently emerged. In this chapter, we present two control strategies for model predictive control of nonlinear PDEs using data-efficient approximations of the Koopman operator. In the first one, the dynamic control system is replaced by a small number of autonomous systems with different yet constant inputs. The control problem is consequently transformed into a switching problem. In the second approach, a bilinear surrogate model is obtained via a convex combination of these autonomous systems. Using a recent convergence result for extended dynamic mode decomposition (EDMD), convergence of the reduced objective function can be shown. We study the properties of these two strategies with respect to solution quality, data requirements, and complexity of the resulting optimization problem using the 1-dimensional Burgers equation and the 2-dimensional Navier–Stokes equations as examples. Finally, an extension for online adaptivity is presented.","lang":"eng"}],"language":[{"iso":"eng"}]}]