[{"abstract":[{"text":"<jats:p>Many dimensionality and model reduction techniques rely on estimating dominant eigenfunctions of associated dynamical operators from data. Important examples include the Koopman operator and its generator, but also the Schrödinger operator. We propose a kernel-based method for the approximation of differential operators in reproducing kernel Hilbert spaces and show how eigenfunctions can be estimated by solving auxiliary matrix eigenvalue problems. The resulting algorithms are applied to molecular dynamics and quantum chemistry examples. Furthermore, we exploit that, under certain conditions, the Schrödinger operator can be transformed into a Kolmogorov backward operator corresponding to a drift-diffusion process and vice versa. This allows us to apply methods developed for the analysis of high-dimensional stochastic differential equations to quantum mechanical systems.</jats:p>","lang":"eng"}],"publication":"Entropy","citation":{"short":"S. Klus, F. Nüske, B. Hamzi, Entropy (2020).","chicago":"Klus, Stefan, Feliks Nüske, and Boumediene Hamzi. “Kernel-Based Approximation of the Koopman Generator and Schrödinger Operator.” <i>Entropy</i>, 2020. <a href=\"https://doi.org/10.3390/e22070722\">https://doi.org/10.3390/e22070722</a>.","apa":"Klus, S., Nüske, F., &#38; Hamzi, B. (2020). Kernel-Based Approximation of the Koopman Generator and Schrödinger Operator. <i>Entropy</i>. <a href=\"https://doi.org/10.3390/e22070722\">https://doi.org/10.3390/e22070722</a>","ieee":"S. Klus, F. Nüske, and B. Hamzi, “Kernel-Based Approximation of the Koopman Generator and Schrödinger Operator,” <i>Entropy</i>, 2020.","ama":"Klus S, Nüske F, Hamzi B. Kernel-Based Approximation of the Koopman Generator and Schrödinger Operator. <i>Entropy</i>. 2020. doi:<a href=\"https://doi.org/10.3390/e22070722\">10.3390/e22070722</a>","bibtex":"@article{Klus_Nüske_Hamzi_2020, title={Kernel-Based Approximation of the Koopman Generator and Schrödinger Operator}, DOI={<a href=\"https://doi.org/10.3390/e22070722\">10.3390/e22070722</a>}, number={722}, journal={Entropy}, author={Klus, Stefan and Nüske, Feliks and Hamzi, Boumediene}, year={2020} }","mla":"Klus, Stefan, et al. “Kernel-Based Approximation of the Koopman Generator and Schrödinger Operator.” <i>Entropy</i>, 722, 2020, doi:<a href=\"https://doi.org/10.3390/e22070722\">10.3390/e22070722</a>."},"type":"journal_article","oa":"1","department":[{"_id":"101"}],"date_created":"2021-04-28T18:06:35Z","date_updated":"2022-01-06T06:55:16Z","publication_status":"published","title":"Kernel-Based Approximation of the Koopman Generator and Schrödinger Operator","year":"2020","status":"public","publication_identifier":{"issn":["1099-4300"]},"author":[{"first_name":"Stefan","last_name":"Klus","full_name":"Klus, Stefan"},{"first_name":"Feliks","orcid":"0000-0003-2444-7889","last_name":"Nüske","full_name":"Nüske, Feliks","id":"81513"},{"full_name":"Hamzi, Boumediene","last_name":"Hamzi","first_name":"Boumediene"}],"doi":"10.3390/e22070722","user_id":"81513","main_file_link":[{"url":"https://www.mdpi.com/1099-4300/22/7/722","open_access":"1"}],"article_number":"722","_id":"21819","language":[{"iso":"eng"}]},{"project":[{"name":"SFB 901","_id":"1"},{"name":"SFB 901 -Subproject T2","_id":"84"},{"_id":"82","name":"SFB 901 - Project Area T"}],"citation":{"mla":"Bobolz, Jan, et al. “Privacy-Preserving Incentive Systems with Highly Efficient Point-Collection.” <i>Proceedings of the 15th ACM Asia Conference on Computer and Communications Security (ASIA CCS ’20),</i> ACM, 2020, doi:<a href=\"https://doi.org/10.1145/3320269.3384769\">10.1145/3320269.3384769</a>.","ama":"Bobolz J, Eidens F, Krenn S, Slamanig D, Striecks C. Privacy-Preserving Incentive Systems with Highly Efficient Point-Collection. In: <i>Proceedings of the 15th ACM Asia Conference on Computer and Communications Security (ASIA CCS ’20),</i>. New York, NY, USA: ACM; 2020. doi:<a href=\"https://doi.org/10.1145/3320269.3384769\">10.1145/3320269.3384769</a>","bibtex":"@inproceedings{Bobolz_Eidens_Krenn_Slamanig_Striecks_2020, place={New York, NY, USA}, title={Privacy-Preserving Incentive Systems with Highly Efficient Point-Collection}, DOI={<a href=\"https://doi.org/10.1145/3320269.3384769\">10.1145/3320269.3384769</a>}, booktitle={Proceedings of the 15th ACM Asia Conference on Computer and Communications Security (ASIA CCS ’20),}, publisher={ACM}, author={Bobolz, Jan and Eidens, Fabian and Krenn, Stephan and Slamanig, Daniel and Striecks, Christoph}, year={2020} }","apa":"Bobolz, J., Eidens, F., Krenn, S., Slamanig, D., &#38; Striecks, C. (2020). Privacy-Preserving Incentive Systems with Highly Efficient Point-Collection. In <i>Proceedings of the 15th ACM Asia Conference on Computer and Communications Security (ASIA CCS ’20),</i>. New York, NY, USA: ACM. <a href=\"https://doi.org/10.1145/3320269.3384769\">https://doi.org/10.1145/3320269.3384769</a>","ieee":"J. Bobolz, F. Eidens, S. Krenn, D. Slamanig, and C. Striecks, “Privacy-Preserving Incentive Systems with Highly Efficient Point-Collection,” in <i>Proceedings of the 15th ACM Asia Conference on Computer and Communications Security (ASIA CCS ’20),</i> Taiwan, 2020.","short":"J. Bobolz, F. Eidens, S. Krenn, D. Slamanig, C. Striecks, in: Proceedings of the 15th ACM Asia Conference on Computer and Communications Security (ASIA CCS ’20), ACM, New York, NY, USA, 2020.","chicago":"Bobolz, Jan, Fabian Eidens, Stephan Krenn, Daniel Slamanig, and Christoph Striecks. “Privacy-Preserving Incentive Systems with Highly Efficient Point-Collection.” In <i>Proceedings of the 15th ACM Asia Conference on Computer and Communications Security (ASIA CCS ’20),</i>. New York, NY, USA: ACM, 2020. <a href=\"https://doi.org/10.1145/3320269.3384769\">https://doi.org/10.1145/3320269.3384769</a>."},"file_date_updated":"2020-04-09T09:59:03Z","oa":"1","place":"New York, NY, USA","has_accepted_license":"1","conference":{"location":"Taiwan","name":"ASIA CCS'20"},"status":"public","ddc":["000"],"user_id":"477","publisher":"ACM","_id":"16487","publication":"Proceedings of the 15th ACM Asia Conference on Computer and Communications Security (ASIA CCS ’20),","department":[{"_id":"64"}],"type":"conference","date_created":"2020-04-09T10:00:29Z","file":[{"file_id":"16488","content_type":"application/pdf","success":1,"file_name":"main.pdf","file_size":553623,"access_level":"closed","relation":"main_file","date_updated":"2020-04-09T09:59:03Z","date_created":"2020-04-09T09:59:03Z","creator":"feidens"}],"date_updated":"2022-01-06T06:52:51Z","author":[{"id":"27207","first_name":"Jan","last_name":"Bobolz","full_name":"Bobolz, Jan"},{"id":"25078","full_name":"Eidens, Fabian","first_name":"Fabian","last_name":"Eidens"},{"first_name":"Stephan","last_name":"Krenn","full_name":"Krenn, Stephan"},{"full_name":"Slamanig, Daniel","first_name":"Daniel","last_name":"Slamanig"},{"full_name":"Striecks, Christoph","last_name":"Striecks","first_name":"Christoph"}],"year":"2020","title":"Privacy-Preserving Incentive Systems with Highly Efficient Point-Collection","doi":"10.1145/3320269.3384769","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://eprint.iacr.org/2020/382","open_access":"1"}]},{"citation":{"ieee":"B. Sain and T. Zentgraf, “Metasurfaces help lasers to mode-lock,” <i>Light: Science &#38; Applications</i>, vol. 9, p. 67, 2020.","apa":"Sain, B., &#38; Zentgraf, T. (2020). Metasurfaces help lasers to mode-lock. <i>Light: Science &#38; Applications</i>, <i>9</i>, 67. <a href=\"https://doi.org/10.1038/s41377-020-0312-1\">https://doi.org/10.1038/s41377-020-0312-1</a>","chicago":"Sain, Basudeb, and Thomas Zentgraf. “Metasurfaces Help Lasers to Mode-Lock.” <i>Light: Science &#38; Applications</i> 9 (2020): 67. <a href=\"https://doi.org/10.1038/s41377-020-0312-1\">https://doi.org/10.1038/s41377-020-0312-1</a>.","short":"B. Sain, T. Zentgraf, Light: Science &#38; Applications 9 (2020) 67.","mla":"Sain, Basudeb, and Thomas Zentgraf. “Metasurfaces Help Lasers to Mode-Lock.” <i>Light: Science &#38; Applications</i>, vol. 9, 2020, p. 67, doi:<a href=\"https://doi.org/10.1038/s41377-020-0312-1\">10.1038/s41377-020-0312-1</a>.","bibtex":"@article{Sain_Zentgraf_2020, title={Metasurfaces help lasers to mode-lock}, volume={9}, DOI={<a href=\"https://doi.org/10.1038/s41377-020-0312-1\">10.1038/s41377-020-0312-1</a>}, journal={Light: Science &#38; Applications}, author={Sain, Basudeb and Zentgraf, Thomas}, year={2020}, pages={67} }","ama":"Sain B, Zentgraf T. Metasurfaces help lasers to mode-lock. <i>Light: Science &#38; Applications</i>. 2020;9:67. doi:<a href=\"https://doi.org/10.1038/s41377-020-0312-1\">10.1038/s41377-020-0312-1</a>"},"oa":"1","status":"public","user_id":"30525","volume":9,"page":"67","_id":"16839","publication":"Light: Science & Applications","type":"journal_article","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"}],"date_created":"2020-04-23T11:22:45Z","publication_status":"published","date_updated":"2022-01-06T06:52:57Z","article_type":"original","intvolume":"         9","title":"Metasurfaces help lasers to mode-lock","year":"2020","publication_identifier":{"issn":["2047-7538"]},"author":[{"full_name":"Sain, Basudeb","first_name":"Basudeb","last_name":"Sain"},{"orcid":"0000-0002-8662-1101","last_name":"Zentgraf","first_name":"Thomas","full_name":"Zentgraf, Thomas","id":"30525"}],"doi":"10.1038/s41377-020-0312-1","main_file_link":[{"url":"https://www.nature.com/articles/s41377-020-0312-1","open_access":"1"}],"language":[{"iso":"eng"}]},{"citation":{"mla":"Zhou, Hongqiang, et al. “Polarization-Encrypted Orbital Angular Momentum Multiplexed Metasurface Holography.” <i>ACS Nano</i>, vol. 14, no. 5, 2020, pp. 5553–5559, doi:<a href=\"https://doi.org/10.1021/acsnano.9b09814\">10.1021/acsnano.9b09814</a>.","ama":"Zhou H, Sain B, Wang Y, et al. Polarization-Encrypted Orbital Angular Momentum Multiplexed Metasurface Holography. <i>ACS Nano</i>. 2020;14(5):5553–5559. doi:<a href=\"https://doi.org/10.1021/acsnano.9b09814\">10.1021/acsnano.9b09814</a>","bibtex":"@article{Zhou_Sain_Wang_Schlickriede_Zhao_Zhang_Wei_Li_Huang_Zentgraf_2020, title={Polarization-Encrypted Orbital Angular Momentum Multiplexed Metasurface Holography}, volume={14}, DOI={<a href=\"https://doi.org/10.1021/acsnano.9b09814\">10.1021/acsnano.9b09814</a>}, number={5}, journal={ACS Nano}, author={Zhou, Hongqiang and Sain, Basudeb and Wang, Yongtian and Schlickriede, Christian and Zhao, Ruizhe and Zhang, Xue and Wei, Qunshuo and Li, Xiaowei and Huang, Lingling and Zentgraf, Thomas}, year={2020}, pages={5553–5559} }","apa":"Zhou, H., Sain, B., Wang, Y., Schlickriede, C., Zhao, R., Zhang, X., … Zentgraf, T. (2020). Polarization-Encrypted Orbital Angular Momentum Multiplexed Metasurface Holography. <i>ACS Nano</i>, <i>14</i>(5), 5553–5559. <a href=\"https://doi.org/10.1021/acsnano.9b09814\">https://doi.org/10.1021/acsnano.9b09814</a>","ieee":"H. Zhou <i>et al.</i>, “Polarization-Encrypted Orbital Angular Momentum Multiplexed Metasurface Holography,” <i>ACS Nano</i>, vol. 14, no. 5, pp. 5553–5559, 2020.","chicago":"Zhou, Hongqiang, Basudeb Sain, Yongtian Wang, Christian Schlickriede, Ruizhe Zhao, Xue Zhang, Qunshuo Wei, Xiaowei Li, Lingling Huang, and Thomas Zentgraf. “Polarization-Encrypted Orbital Angular Momentum Multiplexed Metasurface Holography.” <i>ACS Nano</i> 14, no. 5 (2020): 5553–5559. <a href=\"https://doi.org/10.1021/acsnano.9b09814\">https://doi.org/10.1021/acsnano.9b09814</a>.","short":"H. Zhou, B. Sain, Y. Wang, C. Schlickriede, R. Zhao, X. Zhang, Q. Wei, X. Li, L. Huang, T. Zentgraf, ACS Nano 14 (2020) 5553–5559."},"quality_controlled":"1","oa":"1","status":"public","_id":"16931","page":"5553–5559","volume":14,"user_id":"30525","issue":"5","publication":"ACS Nano","date_created":"2020-04-30T11:44:33Z","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"623"}],"type":"journal_article","publication_identifier":{"issn":["1936-0851","1936-086X"]},"author":[{"last_name":"Zhou","first_name":"Hongqiang","full_name":"Zhou, Hongqiang"},{"full_name":"Sain, Basudeb","last_name":"Sain","first_name":"Basudeb"},{"first_name":"Yongtian","last_name":"Wang","full_name":"Wang, Yongtian"},{"id":"59792","last_name":"Schlickriede","first_name":"Christian","full_name":"Schlickriede, Christian"},{"first_name":"Ruizhe","last_name":"Zhao","full_name":"Zhao, Ruizhe"},{"full_name":"Zhang, Xue","first_name":"Xue","last_name":"Zhang"},{"last_name":"Wei","first_name":"Qunshuo","full_name":"Wei, Qunshuo"},{"last_name":"Li","first_name":"Xiaowei","full_name":"Li, Xiaowei"},{"full_name":"Huang, Lingling","last_name":"Huang","first_name":"Lingling"},{"full_name":"Zentgraf, Thomas","first_name":"Thomas","last_name":"Zentgraf","orcid":"0000-0002-8662-1101","id":"30525"}],"title":"Polarization-Encrypted Orbital Angular Momentum Multiplexed Metasurface Holography","year":"2020","article_type":"original","intvolume":"        14","publication_status":"published","date_updated":"2022-01-06T06:52:59Z","language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1"}],"doi":"10.1021/acsnano.9b09814"},{"status":"public","conference":{"location":"Antwerp","name":"22nd IEEE International Conference on Business Informatics","start_date":"2020-06-22","end_date":"2020-06-24"},"has_accepted_license":"1","_id":"16933","publisher":"IEEE","user_id":"47208","ddc":["006"],"file_date_updated":"2020-07-14T09:33:00Z","citation":{"short":"S. Gottschalk, F. Rittmeier, G. Engels, in: Proceedings of the 22nd IEEE International Conference on Business Informatics, IEEE, 2020.","chicago":"Gottschalk, Sebastian, Florian Rittmeier, and Gregor Engels. “Hypothesis-Driven Adaptation of Business Models Based on Product Line Engineering.” In <i>Proceedings of the 22nd IEEE International Conference on Business Informatics</i>. IEEE, 2020. <a href=\"https://doi.org/10.1109/CBI49978.2020.00022\">https://doi.org/10.1109/CBI49978.2020.00022</a>.","apa":"Gottschalk, S., Rittmeier, F., &#38; Engels, G. (2020). Hypothesis-driven Adaptation of Business Models based on Product Line Engineering. In <i>Proceedings of the 22nd IEEE International Conference on Business Informatics</i>. Antwerp: IEEE. <a href=\"https://doi.org/10.1109/CBI49978.2020.00022\">https://doi.org/10.1109/CBI49978.2020.00022</a>","ieee":"S. Gottschalk, F. Rittmeier, and G. Engels, “Hypothesis-driven Adaptation of Business Models based on Product Line Engineering,” in <i>Proceedings of the 22nd IEEE International Conference on Business Informatics</i>, Antwerp, 2020.","ama":"Gottschalk S, Rittmeier F, Engels G. Hypothesis-driven Adaptation of Business Models based on Product Line Engineering. In: <i>Proceedings of the 22nd IEEE International Conference on Business Informatics</i>. IEEE; 2020. doi:<a href=\"https://doi.org/10.1109/CBI49978.2020.00022\">10.1109/CBI49978.2020.00022</a>","bibtex":"@inproceedings{Gottschalk_Rittmeier_Engels_2020, title={Hypothesis-driven Adaptation of Business Models based on Product Line Engineering}, DOI={<a href=\"https://doi.org/10.1109/CBI49978.2020.00022\">10.1109/CBI49978.2020.00022</a>}, booktitle={Proceedings of the 22nd IEEE International Conference on Business Informatics}, publisher={IEEE}, author={Gottschalk, Sebastian and Rittmeier, Florian and Engels, Gregor}, year={2020} }","mla":"Gottschalk, Sebastian, et al. “Hypothesis-Driven Adaptation of Business Models Based on Product Line Engineering.” <i>Proceedings of the 22nd IEEE International Conference on Business Informatics</i>, IEEE, 2020, doi:<a href=\"https://doi.org/10.1109/CBI49978.2020.00022\">10.1109/CBI49978.2020.00022</a>."},"project":[{"_id":"1","name":"SFB 901"},{"_id":"4","name":"SFB 901 - Project Area C"},{"name":"SFB 901 - Subproject C5","_id":"17"}],"oa":"1","year":"2020","title":"Hypothesis-driven Adaptation of Business Models based on Product Line Engineering","author":[{"id":"47208","full_name":"Gottschalk, Sebastian","first_name":"Sebastian","last_name":"Gottschalk"},{"id":"5281","full_name":"Rittmeier, Florian","first_name":"Florian","last_name":"Rittmeier"},{"last_name":"Engels","first_name":"Gregor","full_name":"Engels, Gregor","id":"107"}],"date_updated":"2022-01-06T06:52:59Z","language":[{"iso":"eng"}],"doi":"10.1109/CBI49978.2020.00022","publication":"Proceedings of the 22nd IEEE International Conference on Business Informatics","abstract":[{"text":"The continuous innovation of its business models is an important task for a company to stay competitive. During this process, the company has to validate various hypotheses about its business models by adapting to uncertain and changing customer needs effectively and efficiently. This adaptation, in turn, can be supported by the concept of Software Product Lines (SPLs). SPLs reduce the time to market by deriving products for customers with changing requirements using a common set of features, structured as a feature model. Analogously, we support the process of business model adaptation by applying the engineering process of SPLs to the structure of the Business Model Canvas (BMC). We call this concept a Business Model Decision Line (BMDL). The BMDL matches business domain knowledge in the form of a feature model with customer needs to derive hypotheses about the business model together with experiments for validation. Our approach is effective by providing a comprehensive overview of possible business model adaptations and efficient by reusing experiments for different hypotheses. We implement our approach in a tool and illustrate the usefulness with an example of developing business models for a mobile application.","lang":"eng"}],"file":[{"file_id":"17383","content_type":"application/pdf","relation":"main_file","date_updated":"2020-07-14T09:33:00Z","file_name":"CBI.pdf","access_level":"open_access","file_size":569290,"date_created":"2020-07-14T09:33:00Z","creator":"sego"}],"date_created":"2020-05-04T12:16:54Z","keyword":["Business Model Decision Line","Business Model Adaptation","Hypothesis-driven Adaptation","Software Product Line","Feature Model"],"type":"conference","department":[{"_id":"66"}]},{"oa":"1","project":[{"_id":"1","name":"SFB 901"},{"name":"SFB 901 - Project Area C","_id":"4"},{"_id":"17","name":"SFB 901 - Subproject C5"}],"citation":{"ama":"Gottschalk S, Yigitbas E, Engels G. Model-based Hypothesis Engineering for Supporting Adaptation to Uncertain Customer Needs. In: Shishkov B, ed. <i>Business Modeling and Software Design</i>. Vol 391. Lecture Notes in Business Information Processing. Springer International Publishing; 2020:276-286. doi:<a href=\"https://doi.org/10.1007/978-3-030-52306-0_18\">10.1007/978-3-030-52306-0_18</a>","bibtex":"@inproceedings{Gottschalk_Yigitbas_Engels_2020, series={Lecture Notes in Business Information Processing}, title={Model-based Hypothesis Engineering for Supporting Adaptation to Uncertain Customer Needs}, volume={391}, DOI={<a href=\"https://doi.org/10.1007/978-3-030-52306-0_18\">10.1007/978-3-030-52306-0_18</a>}, booktitle={Business Modeling and Software Design}, publisher={Springer International Publishing}, author={Gottschalk, Sebastian and Yigitbas, Enes and Engels, Gregor}, editor={Shishkov, BorisEditor}, year={2020}, pages={276–286}, collection={Lecture Notes in Business Information Processing} }","mla":"Gottschalk, Sebastian, et al. “Model-Based Hypothesis Engineering for Supporting Adaptation to Uncertain Customer Needs.” <i>Business Modeling and Software Design</i>, edited by Boris Shishkov, vol. 391, Springer International Publishing, 2020, pp. 276–86, doi:<a href=\"https://doi.org/10.1007/978-3-030-52306-0_18\">10.1007/978-3-030-52306-0_18</a>.","chicago":"Gottschalk, Sebastian, Enes Yigitbas, and Gregor Engels. “Model-Based Hypothesis Engineering for Supporting Adaptation to Uncertain Customer Needs.” In <i>Business Modeling and Software Design</i>, edited by Boris Shishkov, 391:276–86. Lecture Notes in Business Information Processing. Springer International Publishing, 2020. <a href=\"https://doi.org/10.1007/978-3-030-52306-0_18\">https://doi.org/10.1007/978-3-030-52306-0_18</a>.","short":"S. Gottschalk, E. Yigitbas, G. Engels, in: B. Shishkov (Ed.), Business Modeling and Software Design, Springer International Publishing, 2020, pp. 276–286.","apa":"Gottschalk, S., Yigitbas, E., &#38; Engels, G. (2020). Model-based Hypothesis Engineering for Supporting Adaptation to Uncertain Customer Needs. In B. Shishkov (Ed.), <i>Business Modeling and Software Design</i> (Vol. 391, pp. 276–286). Potsdam: Springer International Publishing. <a href=\"https://doi.org/10.1007/978-3-030-52306-0_18\">https://doi.org/10.1007/978-3-030-52306-0_18</a>","ieee":"S. Gottschalk, E. Yigitbas, and G. Engels, “Model-based Hypothesis Engineering for Supporting Adaptation to Uncertain Customer Needs,” in <i>Business Modeling and Software Design</i>, Potsdam, 2020, vol. 391, pp. 276–286."},"file_date_updated":"2020-07-14T09:28:33Z","volume":391,"editor":[{"first_name":"Boris","last_name":"Shishkov","full_name":"Shishkov, Boris"}],"user_id":"47208","ddc":["006"],"_id":"16934","publisher":"Springer International Publishing","page":"276-286","has_accepted_license":"1","conference":{"end_date":"2020-07-08","location":"Potsdam","name":"10th International Symposium on Business Modeling and Software Design ","start_date":"2020-07-06"},"status":"public","department":[{"_id":"66"}],"keyword":["Hypothesis Engineering","Model-based","Customer Need Adaptation","Business Model","Product Features"],"type":"conference","date_created":"2020-05-04T12:27:38Z","file":[{"date_created":"2020-07-14T09:25:30Z","creator":"sego","content_type":"application/pdf","file_id":"17380","file_size":267658,"access_level":"open_access","file_name":"BMSD20.pdf","date_updated":"2020-07-14T09:28:33Z","relation":"main_file"}],"abstract":[{"text":"To build successful products, the developers have to adapt their product features and business models to uncertain customer needs. This adaptation is part of the research discipline of Hypotheses Engineering (HE) where customer needs can be seen as hypotheses that need to be tested iteratively by conducting experiments together with the customer. So far, modeling support and associated traceability of this iterative process are missing. Both, in turn, are important to document the adaptation to the customer needs and identify experiments that provide most evidence to the customer needs. To target this issue, we introduce a model-based HE approach with a twofold contribution: First, we develop a modeling language that models hypotheses and experiments as interrelated hierarchies together with a mapping between them. While the hypotheses are labeled with a score level of their current evidence, the experiments are labeled with a score level of maximum evidence that can be achieved during conduction. Second, we provide an iterative process to determine experiments that offer the most evidence improvement to the modeled hypotheses. We illustrate the usefulness of the approach with an example of testing the business model of a mobile application.","lang":"eng"}],"publication":"Business Modeling and Software Design","doi":"10.1007/978-3-030-52306-0_18","language":[{"iso":"eng"}],"series_title":"Lecture Notes in Business Information Processing","intvolume":"       391","date_updated":"2022-01-06T06:52:59Z","author":[{"id":"47208","full_name":"Gottschalk, Sebastian","last_name":"Gottschalk","first_name":"Sebastian"},{"first_name":"Enes","orcid":"0000-0002-5967-833X","last_name":"Yigitbas","full_name":"Yigitbas, Enes","id":"8447"},{"last_name":"Engels","first_name":"Gregor","full_name":"Engels, Gregor","id":"107"}],"title":"Model-based Hypothesis Engineering for Supporting Adaptation to Uncertain Customer Needs","year":"2020"},{"date_created":"2020-05-06T10:45:19Z","type":"conference","oa":"1","department":[{"_id":"9"},{"_id":"321"},{"_id":"149"}],"publication":"Proceedings 4th International Conference Hybrid Materials & Structures","citation":{"ieee":"M. Triebus and T. Tröster, “A Holistic Approach to Optimization-Based Design of Hybrid Materials,” in <i>Proceedings 4th International Conference Hybrid Materials &#38; Structures</i>, Web-Conference, 2020.","mla":"Triebus, Marcel, and Thomas Tröster. “A Holistic Approach to Optimization-Based Design of Hybrid Materials.” <i>Proceedings 4th International Conference Hybrid Materials &#38; Structures</i>, 2020.","apa":"Triebus, M., &#38; Tröster, T. (2020). A Holistic Approach to Optimization-Based Design of Hybrid Materials. In <i>Proceedings 4th International Conference Hybrid Materials &#38; Structures</i>. Web-Conference.","bibtex":"@inproceedings{Triebus_Tröster_2020, title={A Holistic Approach to Optimization-Based Design of Hybrid Materials}, booktitle={Proceedings 4th International Conference Hybrid Materials &#38; Structures}, author={Triebus, Marcel and Tröster, Thomas}, year={2020} }","short":"M. Triebus, T. Tröster, in: Proceedings 4th International Conference Hybrid Materials &#38; Structures, 2020.","ama":"Triebus M, Tröster T. A Holistic Approach to Optimization-Based Design of Hybrid Materials. In: <i>Proceedings 4th International Conference Hybrid Materials &#38; Structures</i>. ; 2020.","chicago":"Triebus, Marcel, and Thomas Tröster. “A Holistic Approach to Optimization-Based Design of Hybrid Materials.” In <i>Proceedings 4th International Conference Hybrid Materials &#38; Structures</i>, 2020."},"main_file_link":[{"url":"https://hybrid2020.dgm.de/fileadmin/Tagungen/2020/2020-04-Hybrid-Materials/02-Graphik-Druckwerke/2020-Hybrid-Proceedings.pdf","open_access":"1"}],"_id":"16939","language":[{"iso":"eng"}],"user_id":"66036","title":"A Holistic Approach to Optimization-Based Design of Hybrid Materials","year":"2020","status":"public","conference":{"name":"4th International Conference Hybrid Materials & Structures 2020","start_date":"2020-04-28","location":"Web-Conference","end_date":"2020-04-29"},"author":[{"id":"66036","last_name":"Triebus","first_name":"Marcel","full_name":"Triebus, Marcel"},{"id":"553","first_name":"Thomas","last_name":"Tröster","full_name":"Tröster, Thomas"}],"date_updated":"2022-01-06T06:52:59Z"},{"_id":"17019","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://ssrn.com/abstract=3581789","open_access":"1"}],"user_id":"61579","ddc":["000"],"author":[{"first_name":"Guido","last_name":"Schryen","full_name":"Schryen, Guido","id":"72850"},{"full_name":"Wagner, Gerit","first_name":"Gerit","last_name":"Wagner"},{"full_name":"Benlian, Alexander","last_name":"Benlian","first_name":"Alexander"}],"year":"2020","status":"public","title":"Distinguishing Knowledge Impact from Citation Impact: A Methodology for Analysing Knowledge Impact for the Literature Review Genre","has_accepted_license":"1","date_updated":"2022-01-06T06:53:02Z","date_created":"2020-05-19T15:12:33Z","file":[{"date_created":"2020-05-19T15:09:28Z","creator":"hsiemes","content_type":"application/pdf","file_id":"17020","date_updated":"2020-05-19T15:09:28Z","relation":"main_file","file_size":487351,"access_level":"open_access","file_name":"SSRN-id3581789.pdf"}],"department":[{"_id":"277"}],"oa":"1","type":"working_paper","keyword":["Scientific impact","knowledge impact","content-based citation analysis","methodology"],"citation":{"mla":"Schryen, Guido, et al. <i>Distinguishing Knowledge Impact from Citation Impact: A Methodology for Analysing Knowledge Impact for the Literature Review Genre</i>. 2020.","ama":"Schryen G, Wagner G, Benlian A. <i>Distinguishing Knowledge Impact from Citation Impact: A Methodology for Analysing Knowledge Impact for the Literature Review Genre</i>.; 2020.","bibtex":"@book{Schryen_Wagner_Benlian_2020, title={Distinguishing Knowledge Impact from Citation Impact: A Methodology for Analysing Knowledge Impact for the Literature Review Genre}, author={Schryen, Guido and Wagner, Gerit and Benlian, Alexander}, year={2020} }","apa":"Schryen, G., Wagner, G., &#38; Benlian, A. (2020). <i>Distinguishing Knowledge Impact from Citation Impact: A Methodology for Analysing Knowledge Impact for the Literature Review Genre</i>.","ieee":"G. Schryen, G. Wagner, and A. Benlian, <i>Distinguishing Knowledge Impact from Citation Impact: A Methodology for Analysing Knowledge Impact for the Literature Review Genre</i>. 2020.","short":"G. Schryen, G. Wagner, A. Benlian, Distinguishing Knowledge Impact from Citation Impact: A Methodology for Analysing Knowledge Impact for the Literature Review Genre, 2020.","chicago":"Schryen, Guido, Gerit Wagner, and Alexander Benlian. <i>Distinguishing Knowledge Impact from Citation Impact: A Methodology for Analysing Knowledge Impact for the Literature Review Genre</i>, 2020."},"file_date_updated":"2020-05-19T15:09:28Z","abstract":[{"lang":"eng","text":"The scientific impact of research papers is multi-dimensional and can be determined quantitatively by means of citation analysis and qualitatively by means of content analysis. Accounting for the widely acknowledged limitations of pure citation analysis, we adopt a knowledge-based perspective on scientific impact to develop a methodology for content-based citation analysis which allows determining how papers have enabled knowledge development in subsequent research (knowledge impact). As knowledge development differs between research genres, we develop a new knowledgebased citation analysis methodology for the genre of standalone literature reviews (LRs). We apply the suggested methodology to the IS business value domain by manually coding 22 LRs and 1,228 citing papers (CPs) and show that the results challenge the assumption that citations indicate knowledge impact. We derive implications for distinguishing knowledge impact from citation impact in the LR genre. Finally, we develop recommendations for authors of LRs, scientific evaluation committees and editorial boards of journals how to apply and benefit from the suggested methodology, and we discuss its efficiency and automatization."}]},{"_id":"17055","ddc":["000"],"user_id":"61579","conference":{"location":"Marrakesh, Morocco","name":"Twenty-Eigth European Conference on Information Systems (ECIS2020)"},"status":"public","has_accepted_license":"1","oa":"1","citation":{"chicago":"Wagner, Gerit, Philipp Empl, and Guido Schryen. “Designing a Novel Strategy for Exploring Literature Corpora.” In <i>28th European Conference on Information Systems (ECIS 2020)</i>, 2020.","ama":"Wagner G, Empl P, Schryen G. Designing a Novel Strategy for Exploring Literature Corpora. In: <i>28th European Conference on Information Systems (ECIS 2020)</i>. ; 2020.","short":"G. Wagner, P. Empl, G. Schryen, in: 28th European Conference on Information Systems (ECIS 2020), 2020.","bibtex":"@inproceedings{Wagner_Empl_Schryen_2020, title={Designing a Novel Strategy for Exploring Literature Corpora}, booktitle={28th European Conference on Information Systems (ECIS 2020)}, author={Wagner, Gerit and Empl, Philipp and Schryen, Guido}, year={2020} }","mla":"Wagner, Gerit, et al. “Designing a Novel Strategy for Exploring Literature Corpora.” <i>28th European Conference on Information Systems (ECIS 2020)</i>, 2020.","apa":"Wagner, G., Empl, P., &#38; Schryen, G. (2020). Designing a Novel Strategy for Exploring Literature Corpora. In <i>28th European Conference on Information Systems (ECIS 2020)</i>. Marrakesh, Morocco.","ieee":"G. Wagner, P. Empl, and G. 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Nevertheless, corresponding guidelines have not been updated for decades. We contend that the traditional strategy of skimming all papers and reading selected papers afterwards needs to be revised. Therefore, we design a new strategy that guides the overall exploratory process by prioritizing influential papers for initial reading, followed by skimming the remaining papers. Consistent with schemata theory, starting with in-depth reading allows readers to acquire more substantial prior content schemata, which are representa-tive for the literature corpus and useful in the following skimming process. To this end, we develop a prototype that identifies the influential papers from a set of PDFs, which is illustrated in a case study in the IT business value domain. With the new strategy, we envision a more efficient process of exploring unknown literature corpora."}]},{"title":"Increasing the sensitivity in the determination of material parameters by using arbitrary loads in ultrasonic transmission measurements","year":"2020","status":"public","author":[{"id":"32616","last_name":"Dreiling","first_name":"Dmitrij","full_name":"Dreiling, Dmitrij"},{"full_name":"Itner, Dominik Thor","last_name":"Itner","first_name":"Dominik Thor"},{"full_name":"Feldmann, Nadine","last_name":"Feldmann","first_name":"Nadine","id":"23082"},{"first_name":"Hauke","last_name":"Gravenkamp","full_name":"Gravenkamp, Hauke"},{"id":"213","first_name":"Bernd","last_name":"Henning","full_name":"Henning, Bernd"}],"conference":{"name":"Sensor and Measurement Science International","location":"Nürnberg"},"publication_status":"published","date_updated":"2022-01-06T06:53:04Z","main_file_link":[{"url":"https://www.ama-science.org/proceedings/getFile/Zmp0ZN==","open_access":"1"}],"publisher":"AMA Service GmbH","_id":"17089","language":[{"iso":"eng"}],"user_id":"32616","doi":"10.5162/SMSI2020/D1.3","citation":{"chicago":"Dreiling, Dmitrij, Dominik Thor Itner, Nadine Feldmann, Hauke Gravenkamp, and Bernd Henning. “Increasing the Sensitivity in the Determination of Material Parameters by Using Arbitrary Loads in Ultrasonic Transmission Measurements.” AMA Service GmbH, 2020. <a href=\"https://doi.org/10.5162/SMSI2020/D1.3\">https://doi.org/10.5162/SMSI2020/D1.3</a>.","short":"D. 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AMA Service GmbH, 2020, doi:<a href=\"https://doi.org/10.5162/SMSI2020/D1.3\">10.5162/SMSI2020/D1.3</a>."},"project":[{"name":"Vollständige Bestimmung der akustischen Materialparameter von Polymeren","_id":"89","grant_number":"409779252"}],"date_created":"2020-06-12T13:47:00Z","type":"conference","department":[{"_id":"49"}],"oa":"1"},{"title":"Integrating Management Science into the HPC Research Ecosystem","year":"2020","author":[{"id":"72850","first_name":"Guido","last_name":"Schryen","full_name":"Schryen, Guido"}],"date_updated":"2022-01-06T06:52:25Z","intvolume":"        63","language":[{"iso":"eng"}],"issue":"9","publication":"Communications of the ACM","file":[{"content_type":"application/pdf","file_id":"15415","access_level":"open_access","file_size":186658,"file_name":"Bringing HPC to management science - Web version.pdf","date_updated":"2020-03-05T10:36:48Z","relation":"main_file","date_created":"2019-12-28T14:30:03Z","creator":"hsiemes"}],"date_created":"2019-12-28T14:27:44Z","type":"journal_article","department":[{"_id":"277"}],"status":"public","has_accepted_license":"1","page":"35 - 37","_id":"15414","ddc":["000"],"user_id":"61579","volume":63,"file_date_updated":"2020-03-05T10:36:48Z","citation":{"short":"G. 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The interviewee Utz-Uwe Haus is Senior Research Engineer @ CRAY European Research Lab (CERL)). A bio of him is included at the end of the interview."}],"issue":"01/2020","publication":"Business & Information Systems Engineering","type":"journal_article","department":[{"_id":"277"}],"file":[{"creator":"hsiemes","date_created":"2020-01-13T13:22:27Z","file_name":"Interview Utz-Uwe Haus (Cray) - BISE SI HPBC - Prepublication version.pdf","file_size":82469,"access_level":"closed","relation":"main_file","date_updated":"2021-08-12T11:41:55Z","file_id":"15516","content_type":"application/pdf"},{"file_id":"23386","content_type":"application/pdf","file_name":"Schryen2020_Article_InterviewWithUtz-UweHausOnHigh.pdf","access_level":"open_access","file_size":226595,"relation":"main_file","date_updated":"2021-08-12T11:41:21Z","date_created":"2021-08-12T11:41:21Z","creator":"hsiemes"}],"date_created":"2020-01-13T13:23:51Z","has_accepted_license":"1","status":"public","ddc":["000"],"user_id":"61579","volume":62,"page":"21 - 23","_id":"15513","file_date_updated":"2021-08-12T11:41:55Z","citation":{"apa":"Schryen, G., Kliewer, N., &#38; Fink, A. 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Parallel computational optimization in operations research: A new integrative framework, literature review and research directions. <i>European Journal of Operational Research</i>. 2020;287(1):1-18.","bibtex":"@article{Schryen_2020, title={Parallel computational optimization in operations research: A new integrative framework, literature review and research directions}, volume={287}, number={1}, journal={European Journal of Operational Research}, publisher={Elsevier}, author={Schryen, Guido}, year={2020}, pages={1–18} }"},"file_date_updated":"2020-03-05T10:37:02Z"},{"has_accepted_license":"1","status":"public","volume":8,"user_id":"30525","ddc":["530"],"_id":"16197","publisher":"Wiley","project":[{"_id":"53","name":"TRR 142"},{"_id":"56","name":"TRR 142 - Project Area C"},{"_id":"75","name":"TRR 142 - Subproject C5"}],"quality_controlled":"1","citation":{"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>.","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>","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.","short":"B. Liu, B. Sain, B. Reineke, R. Zhao, C. Meier, L. Huang, Y. Jiang, T. Zentgraf, Advanced Optical Materials 8 (2020).","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>","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>.","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} }"},"file_date_updated":"2020-02-28T17:37:38Z","oa":"1","article_type":"original","intvolume":"         8","publication_status":"published","date_updated":"2022-01-06T06:52:45Z","publication_identifier":{"issn":["2195-1071"]},"author":[{"full_name":"Liu, Bingyi","first_name":"Bingyi","last_name":"Liu"},{"last_name":"Sain","first_name":"Basudeb","full_name":"Sain, Basudeb"},{"full_name":"Reineke, Bernhard","first_name":"Bernhard","last_name":"Reineke"},{"full_name":"Zhao, Ruizhe","last_name":"Zhao","first_name":"Ruizhe"},{"first_name":"Cedrik","orcid":"https://orcid.org/0000-0002-3787-3572","last_name":"Meier","full_name":"Meier, Cedrik","id":"20798"},{"last_name":"Huang","first_name":"Lingling","full_name":"Huang, Lingling"},{"full_name":"Jiang, Yongyuan","last_name":"Jiang","first_name":"Yongyuan"},{"id":"30525","full_name":"Zentgraf, Thomas","orcid":"0000-0002-8662-1101","first_name":"Thomas","last_name":"Zentgraf"}],"title":"Nonlinear Wavefront Control by Geometric-Phase Dielectric Metasurfaces: Influence of Mode Field and Rotational Symmetry","year":"2020","doi":"10.1002/adom.201902050","language":[{"iso":"eng"}],"article_number":"1902050","main_file_link":[{"url":"https://onlinelibrary.wiley.com/doi/full/10.1002/adom.201902050","open_access":"1"}],"abstract":[{"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.","lang":"eng"}],"issue":"9","publication":"Advanced Optical Materials","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"}],"type":"journal_article","date_created":"2020-02-28T17:29:17Z","file":[{"date_created":"2020-02-28T17:37:38Z","creator":"zentgraf","file_id":"16202","success":1,"content_type":"application/pdf","file_name":"adom.201902050.pdf","file_size":2914923,"access_level":"closed","relation":"main_file","date_updated":"2020-02-28T17:37:38Z"}]},{"date_updated":"2022-01-06T06:52:46Z","author":[{"id":"35343","first_name":"Stefan Balthasar","orcid":"0000-0001-8210-4011","last_name":"Schneider","full_name":"Schneider, Stefan Balthasar"},{"first_name":"Narayanan Puthenpurayil","last_name":"Satheeschandran","full_name":"Satheeschandran, Narayanan Puthenpurayil"},{"id":"13271","full_name":"Peuster, Manuel","first_name":"Manuel","last_name":"Peuster"},{"last_name":"Karl","first_name":"Holger","full_name":"Karl, Holger","id":"126"}],"title":"Machine Learning for Dynamic Resource Allocation in Network Function Virtualization","year":"2020","language":[{"iso":"eng"}],"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."}],"publication":"IEEE Conference on Network Softwarization (NetSoft)","department":[{"_id":"75"}],"type":"conference","date_created":"2020-03-03T11:42:22Z","file":[{"date_created":"2020-03-03T11:42:16Z","creator":"stschn","file_id":"16220","content_type":"application/pdf","file_name":"ris_preprint.pdf","access_level":"open_access","file_size":476590,"relation":"main_file","date_updated":"2020-03-03T11:42:16Z"}],"has_accepted_license":"1","conference":{"location":"Ghent, Belgium","name":"IEEE Conference on Network Softwarization (NetSoft)"},"status":"public","user_id":"35343","ddc":["000"],"publisher":"IEEE","_id":"16219","project":[{"name":"5G Development and validation platform for global industry-specific network services and Apps","_id":"28","grant_number":"761493"},{"name":"SFB 901","_id":"1"},{"name":"SFB 901 - Project Area C","_id":"4"},{"_id":"16","name":"SFB 901 - Subproject C4"}],"citation":{"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} }","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.","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.","short":"S.B. Schneider, N.P. Satheeschandran, M. Peuster, H. Karl, in: IEEE Conference on Network Softwarization (NetSoft), 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.","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."},"file_date_updated":"2020-03-03T11:42:16Z","oa":"1"},{"file_date_updated":"2020-03-05T10:35:49Z","citation":{"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.","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.","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.","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} }"},"oa":"1","status":"public","has_accepted_license":"1","page":"3 - 31","publisher":"Information Institute Publishing, Washington DC, USA","_id":"16249","user_id":"61579","ddc":["000"],"volume":16,"publication":"Journal of Information System Security","issue":"1","abstract":[{"lang":"eng","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."}],"file":[{"date_updated":"2020-03-05T10:35:49Z","relation":"main_file","access_level":"open_access","file_size":478056,"file_name":"Timing in Information Security - JISSEC format PREPUBLICATION.pdf","content_type":"application/pdf","file_id":"16250","creator":"hsiemes","date_created":"2020-03-05T10:26:11Z"}],"date_created":"2020-03-05T10:29:00Z","type":"journal_article","keyword":["Event Study","Information Security","Investment Announcements","Stock Price Reaction","Value of Information Security Investments"],"department":[{"_id":"277"}],"year":"2020","title":"Timing in Information Security: An Event Study on the Impact of Information Security Investment Announcements","author":[{"full_name":"Szubartowicz, Eva","last_name":"Szubartowicz","first_name":"Eva"},{"full_name":"Schryen, Guido","last_name":"Schryen","first_name":"Guido","id":"72850"}],"date_updated":"2022-01-06T06:52:47Z","intvolume":"        16","language":[{"iso":"eng"}]},{"author":[{"full_name":"zur Heiden, Philipp","first_name":"Philipp","last_name":"zur Heiden","id":"64394"},{"last_name":"Berendes","first_name":"Carsten Ingo","full_name":"Berendes, Carsten Ingo","id":"53344"},{"id":"59677","full_name":"Beverungen, Daniel","last_name":"Beverungen","first_name":"Daniel"}],"year":"2020","title":"Designing City Center Area Recommendation Systems ","date_updated":"2022-01-06T06:52:48Z","publication_status":"published","language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"https://library.gito.de/open-access-pdf/E1_City_recommendations_Master_final.pdf"}],"doi":"doi.org/10.30844/wi_2020_e1-heiden","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."}],"date_created":"2020-03-13T07:05:24Z","file":[{"date_created":"2020-03-13T06:58:54Z","creator":"pzh","content_type":"application/pdf","success":1,"file_id":"16286","file_size":1370273,"access_level":"closed","file_name":"E1_City_recommendations_Master_final.pdf","date_updated":"2020-03-13T06:58:54Z","relation":"main_file"}],"department":[{"_id":"526"}],"type":"conference","keyword":["Town Center Management","High Street Retail","Recommender Systems","Geospatial Recommendations","Design Science Research"],"conference":{"location":"Potsdam","name":"15th International Conference on Wirtschaftsinformatik","start_date":"2020-03-07","end_date":"2020-03-11"},"status":"public","has_accepted_license":"1","_id":"16285","ddc":["000"],"user_id":"64394","citation":{"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>.","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>","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} }","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>.","short":"P. zur Heiden, C.I. Berendes, D. Beverungen, in: Proceedings of the 15th International Conference on Wirtschaftsinformatik, Potsdam, 2020."},"file_date_updated":"2020-03-13T06:58:54Z","project":[{"grant_number":"​02K15A073","_id":"35","name":"​Interaktive Einkaufserlebnisse in Innenstädten durch digitale Dienstleistungen"}],"quality_controlled":"1","place":"Potsdam","oa":"1"},{"status":"public","volume":34,"user_id":"47427","_id":"16290","page":"577–591","project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"citation":{"apa":"Bieker, K., Peitz, S., Brunton, S. L., Kutz, J. N., &#38; Dellnitz, M. (2020). Deep model predictive flow control with limited sensor data and online learning. <i>Theoretical and Computational Fluid Dynamics</i>, <i>34</i>, 577–591. <a href=\"https://doi.org/10.1007/s00162-020-00520-4\">https://doi.org/10.1007/s00162-020-00520-4</a>","ieee":"K. Bieker, S. Peitz, S. L. Brunton, J. N. Kutz, and M. Dellnitz, “Deep model predictive flow control with limited sensor data and online learning,” <i>Theoretical and Computational Fluid Dynamics</i>, vol. 34, pp. 577–591, 2020.","chicago":"Bieker, Katharina, Sebastian Peitz, Steven L. Brunton, J. Nathan Kutz, and Michael Dellnitz. “Deep Model Predictive Flow Control with Limited Sensor Data and Online Learning.” <i>Theoretical and Computational Fluid Dynamics</i> 34 (2020): 577–591. <a href=\"https://doi.org/10.1007/s00162-020-00520-4\">https://doi.org/10.1007/s00162-020-00520-4</a>.","short":"K. Bieker, S. Peitz, S.L. Brunton, J.N. Kutz, M. Dellnitz, Theoretical and Computational Fluid Dynamics 34 (2020) 577–591.","mla":"Bieker, Katharina, et al. “Deep Model Predictive Flow Control with Limited Sensor Data and Online Learning.” <i>Theoretical and Computational Fluid Dynamics</i>, vol. 34, 2020, pp. 577–591, doi:<a href=\"https://doi.org/10.1007/s00162-020-00520-4\">10.1007/s00162-020-00520-4</a>.","ama":"Bieker K, Peitz S, Brunton SL, Kutz JN, Dellnitz M. Deep model predictive flow control with limited sensor data and online learning. <i>Theoretical and Computational Fluid Dynamics</i>. 2020;34:577–591. doi:<a href=\"https://doi.org/10.1007/s00162-020-00520-4\">10.1007/s00162-020-00520-4</a>","bibtex":"@article{Bieker_Peitz_Brunton_Kutz_Dellnitz_2020, title={Deep model predictive flow control with limited sensor data and online learning}, volume={34}, DOI={<a href=\"https://doi.org/10.1007/s00162-020-00520-4\">10.1007/s00162-020-00520-4</a>}, journal={Theoretical and Computational Fluid Dynamics}, author={Bieker, Katharina and Peitz, Sebastian and Brunton, Steven L. and Kutz, J. Nathan and Dellnitz, Michael}, year={2020}, pages={577–591} }"},"oa":"1","intvolume":"        34","article_type":"original","date_updated":"2022-01-06T06:52:48Z","publication_status":"published","publication_identifier":{"issn":["0935-4964","1432-2250"]},"author":[{"first_name":"Katharina","last_name":"Bieker","full_name":"Bieker, Katharina","id":"32829"},{"full_name":"Peitz, Sebastian","first_name":"Sebastian","last_name":"Peitz","orcid":"https://orcid.org/0000-0002-3389-793X","id":"47427"},{"last_name":"Brunton","first_name":"Steven L.","full_name":"Brunton, Steven L."},{"full_name":"Kutz, J. Nathan","last_name":"Kutz","first_name":"J. Nathan"},{"full_name":"Dellnitz, Michael","first_name":"Michael","last_name":"Dellnitz"}],"title":"Deep model predictive flow control with limited sensor data and online learning","year":"2020","doi":"10.1007/s00162-020-00520-4","language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"https://link.springer.com/content/pdf/10.1007/s00162-020-00520-4.pdf"}],"abstract":[{"lang":"eng","text":"The control of complex systems is of critical importance in many branches of science, engineering, and industry, many of which are governed by nonlinear partial differential equations. Controlling an unsteady fluid flow is particularly important, as flow control is a key enabler for technologies in energy (e.g., wind, tidal, and combustion), transportation (e.g., planes, trains, and automobiles), security (e.g., tracking airborne contamination), and health (e.g., artificial hearts and artificial respiration). However, the high-dimensional, nonlinear, and multi-scale dynamics make real-time feedback control infeasible. Fortunately, these high- dimensional systems exhibit dominant, low-dimensional patterns of activity that can be exploited for effective control in the sense that knowledge of the entire state of a system is not required. Advances in machine learning have the potential to revolutionize flow control given its ability to extract principled, low-rank feature spaces characterizing such complex systems.We present a novel deep learning modelpredictive control framework that exploits low-rank features of the flow in order to achieve considerable improvements to control performance. Instead of predicting the entire fluid state, we use a recurrent neural network (RNN) to accurately predict the control relevant quantities of the system, which are then embedded into an MPC framework to construct a feedback loop. In order to lower the data requirements and to improve the prediction accuracy and thus the control performance, incoming sensor data are used to update the RNN online. The results are validated using varying fluid flow examples of increasing complexity."}],"publication":"Theoretical and Computational Fluid Dynamics","department":[{"_id":"101"}],"type":"journal_article","date_created":"2020-03-13T12:40:09Z"},{"abstract":[{"lang":"eng","text":"We study the structure of power networks in consideration of local protests against certain\r\npower lines (’not-in-my-backyard’). An application of a network formation game is used to\r\ndetermine whether or not such protests arise. We examine the existence of stable networks and\r\ntheir characteristics, when no player wants to make an alteration. Stability within this game is\r\nonly reached if each player is sufficiently connected to a power source but is not linked to more\r\nplayers than necessary. In addition we introduce an algorithm that creates a stable network."}],"citation":{"chicago":"Block, Lukas. <i>Network Formation with NIMBY Constraints</i>, 2020.","short":"L. Block, Network Formation with NIMBY Constraints, 2020.","apa":"Block, L. (2020). <i>Network formation with NIMBY constraints</i>.","ieee":"L. Block, <i>Network formation with NIMBY constraints</i>. 2020.","ama":"Block L. <i>Network Formation with NIMBY Constraints</i>.; 2020.","bibtex":"@book{Block_2020, title={Network formation with NIMBY constraints}, author={Block, Lukas}, year={2020} }","mla":"Block, Lukas. <i>Network Formation with NIMBY Constraints</i>. 2020."},"file_date_updated":"2021-08-30T10:01:53Z","oa":"1","keyword":["Network formation","NIMBY","Power networks","Nash stability"],"type":"working_paper","date_created":"2021-08-30T10:05:18Z","file":[{"date_created":"2021-08-30T10:01:53Z","creator":"lblock","file_id":"23569","success":1,"content_type":"application/pdf","relation":"main_file","date_updated":"2021-08-30T10:01:53Z","file_name":"Network formation with NIMBY constraints.pdf","access_level":"closed","file_size":169285}],"has_accepted_license":"1","date_updated":"2022-02-07T20:08:54Z","author":[{"id":"22527","full_name":"Block, Lukas","last_name":"Block","first_name":"Lukas"}],"jel":["D85","H54","L52"],"title":"Network formation with NIMBY constraints","year":"2020","status":"public","ddc":["330"],"user_id":"22527","_id":"23568","language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1"}]}]