[{"title":"Experimental and Theoretical Investigation of CO2 Absorption in Aqueous Solution of Glucosamine: Material Property and Equilibrium Data","user_id":"22006","publication_status":"published","publication_identifier":{"issn":["0021-9568","1520-5134"]},"date_created":"2024-02-27T11:00:37Z","status":"public","department":[{"_id":"9"},{"_id":"145"}],"keyword":["General Chemical Engineering","General Chemistry"],"publication":"Journal of Chemical & Engineering Data","quality_controlled":"1","publisher":"American Chemical Society (ACS)","author":[{"first_name":"Iman","full_name":"Hami Dindar, Iman","last_name":"Hami Dindar","id":"54836"},{"last_name":"Mirzaei","first_name":"Mona","full_name":"Mirzaei, Mona"},{"last_name":"Baumhögger","id":"15164","first_name":"Elmar","full_name":"Baumhögger, Elmar"},{"last_name":"Lutters","id":"22006","first_name":"Nicole","orcid":"0009-0006-7828-8448","full_name":"Lutters, Nicole"},{"full_name":"Kenig, Eugeny Y.","first_name":"Eugeny Y.","id":"665","last_name":"Kenig"}],"doi":"10.1021/acs.jced.3c00554","_id":"52097","date_updated":"2024-03-08T09:08:37Z","citation":{"chicago":"Hami Dindar, Iman, Mona Mirzaei, Elmar Baumhögger, Nicole Lutters, and Eugeny Y. Kenig. “Experimental and Theoretical Investigation of CO2 Absorption in Aqueous Solution of Glucosamine: Material Property and Equilibrium Data.” Journal of Chemical & Engineering Data, 2024. https://doi.org/10.1021/acs.jced.3c00554.","ama":"Hami Dindar I, Mirzaei M, Baumhögger E, Lutters N, Kenig EY. Experimental and Theoretical Investigation of CO2 Absorption in Aqueous Solution of Glucosamine: Material Property and Equilibrium Data. Journal of Chemical & Engineering Data. Published online 2024. doi:10.1021/acs.jced.3c00554","apa":"Hami Dindar, I., Mirzaei, M., Baumhögger, E., Lutters, N., & Kenig, E. Y. (2024). Experimental and Theoretical Investigation of CO2 Absorption in Aqueous Solution of Glucosamine: Material Property and Equilibrium Data. Journal of Chemical & Engineering Data. https://doi.org/10.1021/acs.jced.3c00554","mla":"Hami Dindar, Iman, et al. “Experimental and Theoretical Investigation of CO2 Absorption in Aqueous Solution of Glucosamine: Material Property and Equilibrium Data.” Journal of Chemical & Engineering Data, American Chemical Society (ACS), 2024, doi:10.1021/acs.jced.3c00554.","bibtex":"@article{Hami Dindar_Mirzaei_Baumhögger_Lutters_Kenig_2024, title={Experimental and Theoretical Investigation of CO2 Absorption in Aqueous Solution of Glucosamine: Material Property and Equilibrium Data}, DOI={10.1021/acs.jced.3c00554}, journal={Journal of Chemical & Engineering Data}, publisher={American Chemical Society (ACS)}, author={Hami Dindar, Iman and Mirzaei, Mona and Baumhögger, Elmar and Lutters, Nicole and Kenig, Eugeny Y.}, year={2024} }","short":"I. Hami Dindar, M. Mirzaei, E. Baumhögger, N. Lutters, E.Y. Kenig, Journal of Chemical & Engineering Data (2024).","ieee":"I. Hami Dindar, M. Mirzaei, E. Baumhögger, N. Lutters, and E. Y. Kenig, “Experimental and Theoretical Investigation of CO2 Absorption in Aqueous Solution of Glucosamine: Material Property and Equilibrium Data,” Journal of Chemical & Engineering Data, 2024, doi: 10.1021/acs.jced.3c00554."},"year":"2024","type":"journal_article","language":[{"iso":"eng"}]},{"type":"journal_article","year":"2024","citation":{"apa":"Hamdoun, A., & Mahnken, R. (2024). Experimental investigations of uniaxial and biaxial cold stretching within PC‐films and bars using optical measurements. PAMM. https://doi.org/10.1002/pamm.202300114","ama":"Hamdoun A, Mahnken R. Experimental investigations of uniaxial and biaxial cold stretching within PC‐films and bars using optical measurements. PAMM. Published online 2024. doi:10.1002/pamm.202300114","chicago":"Hamdoun, Ayoub, and Rolf Mahnken. “Experimental Investigations of Uniaxial and Biaxial Cold Stretching within PC‐films and Bars Using Optical Measurements.” PAMM, 2024. https://doi.org/10.1002/pamm.202300114.","mla":"Hamdoun, Ayoub, and Rolf Mahnken. “Experimental Investigations of Uniaxial and Biaxial Cold Stretching within PC‐films and Bars Using Optical Measurements.” PAMM, Wiley, 2024, doi:10.1002/pamm.202300114.","bibtex":"@article{Hamdoun_Mahnken_2024, title={Experimental investigations of uniaxial and biaxial cold stretching within PC‐films and bars using optical measurements}, DOI={10.1002/pamm.202300114}, journal={PAMM}, publisher={Wiley}, author={Hamdoun, Ayoub and Mahnken, Rolf}, year={2024} }","short":"A. Hamdoun, R. Mahnken, PAMM (2024).","ieee":"A. Hamdoun and R. Mahnken, “Experimental investigations of uniaxial and biaxial cold stretching within PC‐films and bars using optical measurements,” PAMM, 2024, doi: 10.1002/pamm.202300114."},"language":[{"iso":"eng"}],"doi":"10.1002/pamm.202300114","date_updated":"2024-02-29T13:58:38Z","_id":"52217","publication_status":"published","publication_identifier":{"issn":["1617-7061","1617-7061"]},"date_created":"2024-02-29T13:53:13Z","status":"public","publication":"PAMM","department":[{"_id":"9"},{"_id":"154"},{"_id":"321"}],"keyword":["Electrical and Electronic Engineering","Atomic and Molecular Physics","and Optics"],"publisher":"Wiley","quality_controlled":"1","author":[{"full_name":"Hamdoun, Ayoub","first_name":"Ayoub","last_name":"Hamdoun"},{"last_name":"Mahnken","id":"335","first_name":"Rolf","full_name":"Mahnken, Rolf"}],"title":"Experimental investigations of uniaxial and biaxial cold stretching within PC‐films and bars using optical measurements","user_id":"335","abstract":[{"lang":"eng","text":"AbstractPolycarbonate (PC) is an amorphous polymer that is an extremely robust material with a high tenacity, and thus suitable for a lightweight construction with glass‐like transparency. Due to these advantageous properties, PC is often used in industry for example in medical devices, automotive headlamps, sporting equipment, electronics, and a variety of other products. PC is often subjected to uniaxial and biaxial loading conditions. Therefore, reliable material models have to take into account the various resulting experimental effects. For those reasons, we investigate PC specimens under uniaxial and biaxial loading by using different stretch rates and loading scenarios. In addition to that, we propose methods for optical measurement of local stretches to obtain the approximated local true stress. In future work, the displacement fields and the resulting reaction forces will be used for parameter identification of constitutive equations."}]},{"language":[{"iso":"eng"}],"citation":{"mla":"Gröger, Benjamin, et al. “Experimentelle Und Numerische Analyse Des Fließverhaltens von Hochviskosen Wärmeleitstoffen Im Fertigungsprozess.” 24. Kolloquium: Gemeinsame Forschung in Der Klebtechnik, 2024.","bibtex":"@inproceedings{Gröger_Wiebicke_Koch_Gude_Gilich_Meschut_2024, title={Experimentelle und numerische Analyse des Fließverhaltens von hochviskosen Wärmeleitstoffen im Fertigungsprozess}, booktitle={24. Kolloquium: Gemeinsame Forschung in der Klebtechnik}, author={Gröger, Benjamin and Wiebicke, Felix and Koch, Ilja and Gude, Maik and Gilich, Julian and Meschut, Gerson}, year={2024} }","ama":"Gröger B, Wiebicke F, Koch I, Gude M, Gilich J, Meschut G. Experimentelle und numerische Analyse des Fließverhaltens von hochviskosen Wärmeleitstoffen im Fertigungsprozess. In: 24. Kolloquium: Gemeinsame Forschung in Der Klebtechnik. ; 2024.","apa":"Gröger, B., Wiebicke, F., Koch, I., Gude, M., Gilich, J., & Meschut, G. (2024). Experimentelle und numerische Analyse des Fließverhaltens von hochviskosen Wärmeleitstoffen im Fertigungsprozess. 24. Kolloquium: Gemeinsame Forschung in Der Klebtechnik. 24. Kolloquium: Gemeinsame Forschung in der Klebtechnik, Köln.","chicago":"Gröger, Benjamin, Felix Wiebicke, Ilja Koch, Maik Gude, Julian Gilich, and Gerson Meschut. “Experimentelle Und Numerische Analyse Des Fließverhaltens von Hochviskosen Wärmeleitstoffen Im Fertigungsprozess.” In 24. Kolloquium: Gemeinsame Forschung in Der Klebtechnik, 2024.","ieee":"B. Gröger, F. Wiebicke, I. Koch, M. Gude, J. Gilich, and G. Meschut, “Experimentelle und numerische Analyse des Fließverhaltens von hochviskosen Wärmeleitstoffen im Fertigungsprozess,” presented at the 24. Kolloquium: Gemeinsame Forschung in der Klebtechnik, Köln, 2024.","short":"B. Gröger, F. Wiebicke, I. Koch, M. Gude, J. Gilich, G. Meschut, in: 24. Kolloquium: Gemeinsame Forschung in Der Klebtechnik, 2024."},"year":"2024","type":"conference_abstract","date_updated":"2024-03-13T14:44:56Z","_id":"52537","conference":{"end_date":"2024-02-28","name":"24. Kolloquium: Gemeinsame Forschung in der Klebtechnik","start_date":"2024-02-27","location":"Köln"},"author":[{"last_name":"Gröger","full_name":"Gröger, Benjamin","first_name":"Benjamin"},{"first_name":"Felix","full_name":"Wiebicke, Felix","last_name":"Wiebicke"},{"last_name":"Koch","full_name":"Koch, Ilja","first_name":"Ilja"},{"first_name":"Maik","full_name":"Gude, Maik","last_name":"Gude"},{"full_name":"Gilich, Julian","first_name":"Julian","id":"44391","last_name":"Gilich"},{"id":"32056","last_name":"Meschut","full_name":"Meschut, Gerson","orcid":"0000-0002-2763-1246","first_name":"Gerson"}],"publication":"24. Kolloquium: Gemeinsame Forschung in der Klebtechnik","department":[{"_id":"157"}],"status":"public","date_created":"2024-03-13T14:42:08Z","user_id":"44391","title":"Experimentelle und numerische Analyse des Fließverhaltens von hochviskosen Wärmeleitstoffen im Fertigungsprozess"},{"user_id":"93922","title":"Experimentelle Untersuchung und Modellierung des flüssigseitigen Stofftransports in Anstaupackungen","place":"Konferenz DECHEMA/VDI - Fluidverfahrenstechnik 2024 an der Ruhr-Universität Bochum","date_created":"2024-03-12T09:21:06Z","status":"public","author":[{"id":"93922","last_name":"Franke","full_name":"Franke, Patrick","first_name":"Patrick"}],"_id":"52504","date_updated":"2024-03-12T12:36:29Z","language":[{"iso":"eng"}],"year":"2024","type":"conference_abstract","citation":{"chicago":"Franke, Patrick. “Experimentelle Untersuchung Und Modellierung Des Flüssigseitigen Stofftransports in Anstaupackungen.” Konferenz DECHEMA/VDI - Fluidverfahrenstechnik 2024 an der Ruhr-Universität Bochum, 2024.","apa":"Franke, P. (2024). Experimentelle Untersuchung und Modellierung des flüssigseitigen Stofftransports in Anstaupackungen.","ama":"Franke P. Experimentelle Untersuchung und Modellierung des flüssigseitigen Stofftransports in Anstaupackungen. In: ; 2024.","bibtex":"@inproceedings{Franke_2024, place={Konferenz DECHEMA/VDI - Fluidverfahrenstechnik 2024 an der Ruhr-Universität Bochum}, title={Experimentelle Untersuchung und Modellierung des flüssigseitigen Stofftransports in Anstaupackungen}, author={Franke, Patrick}, year={2024} }","mla":"Franke, Patrick. Experimentelle Untersuchung Und Modellierung Des Flüssigseitigen Stofftransports in Anstaupackungen. 2024.","short":"P. Franke, in: Konferenz DECHEMA/VDI - Fluidverfahrenstechnik 2024 an der Ruhr-Universität Bochum, 2024.","ieee":"P. Franke, “Experimentelle Untersuchung und Modellierung des flüssigseitigen Stofftransports in Anstaupackungen,” 2024."}},{"status":"public","date_created":"2023-11-06T15:31:32Z","author":[{"full_name":"Koldewey, Christian","orcid":"https://orcid.org/0000-0001-7992-6399","first_name":"Christian","id":"43136","last_name":"Koldewey"},{"first_name":"Timm","orcid":"https://orcid.org/0000-0001-6034-4399","full_name":"Fichtler, Timm","last_name":"Fichtler","id":"66731"},{"full_name":"Scholtysik, Michel","first_name":"Michel","id":"50562","last_name":"Scholtysik"},{"last_name":"Biehler","full_name":"Biehler, Jan","first_name":"Jan"},{"full_name":"Schreiner, Nick","first_name":"Nick","last_name":"Schreiner"},{"full_name":"Sommer, Franziska","first_name":"Franziska","last_name":"Sommer"},{"first_name":"Maximilian","full_name":"Schacht, Maximilian","last_name":"Schacht"},{"last_name":"Kaufmann","full_name":"Kaufmann, Jonas","first_name":"Jonas"},{"full_name":"Rabe, Martin","first_name":"Martin","last_name":"Rabe"},{"full_name":"Sedlmeier, Joachim","first_name":"Joachim","last_name":"Sedlmeier"},{"full_name":"Dumitrescu, Roman","first_name":"Roman","id":"16190","last_name":"Dumitrescu"}],"keyword":["Digital Servitization","Transformation","Capabilities","Maturity","Smart Services"],"department":[{"_id":"563"},{"_id":"241"}],"title":"Exploring Capabilities for the Smart Service Transformation in Manufacturing: Insights from Theory and Practice","user_id":"66731","abstract":[{"text":"Digital Servitization is one of the significant trends affecting the manufacturing industry. Companies try to tackle challenges regarding their differentiation and profitability using digital services. One specific type of digital services are smart services, which are digital services built on data from smart products. Introducing these kinds of offerings into the portfolio of manufacturing companies is not trivial. Moreover, they require conscious action to align all relevant capabilities to realize the respective business goals. However, what capabilities are generally relevant for smart services remains opaque. We conducted a systematic literature review to identify them and extended the results through an interview study. Our analysis results in 78 capabilities clustered among 12 principles and six dimensions. These results provide significant support for the smart service transformation of manufacturing companies and for structuring the research field of smart services.","lang":"eng"}],"year":"2024","type":"conference","citation":{"ieee":"C. Koldewey et al., “Exploring Capabilities for the Smart Service Transformation in Manufacturing: Insights from Theory and Practice,” presented at the Hawaii International Conference on System Sciences, Hawaii, 2024.","short":"C. Koldewey, T. Fichtler, M. Scholtysik, J. Biehler, N. Schreiner, F. Sommer, M. Schacht, J. Kaufmann, M. Rabe, J. Sedlmeier, R. Dumitrescu, in: 2024.","mla":"Koldewey, Christian, et al. Exploring Capabilities for the Smart Service Transformation in Manufacturing: Insights from Theory and Practice. 2024.","bibtex":"@inproceedings{Koldewey_Fichtler_Scholtysik_Biehler_Schreiner_Sommer_Schacht_Kaufmann_Rabe_Sedlmeier_et al._2024, title={Exploring Capabilities for the Smart Service Transformation in Manufacturing: Insights from Theory and Practice}, author={Koldewey, Christian and Fichtler, Timm and Scholtysik, Michel and Biehler, Jan and Schreiner, Nick and Sommer, Franziska and Schacht, Maximilian and Kaufmann, Jonas and Rabe, Martin and Sedlmeier, Joachim and et al.}, year={2024} }","apa":"Koldewey, C., Fichtler, T., Scholtysik, M., Biehler, J., Schreiner, N., Sommer, F., Schacht, M., Kaufmann, J., Rabe, M., Sedlmeier, J., & Dumitrescu, R. (2024). Exploring Capabilities for the Smart Service Transformation in Manufacturing: Insights from Theory and Practice. Hawaii International Conference on System Sciences, Hawaii.","ama":"Koldewey C, Fichtler T, Scholtysik M, et al. Exploring Capabilities for the Smart Service Transformation in Manufacturing: Insights from Theory and Practice. In: ; 2024.","chicago":"Koldewey, Christian, Timm Fichtler, Michel Scholtysik, Jan Biehler, Nick Schreiner, Franziska Sommer, Maximilian Schacht, et al. “Exploring Capabilities for the Smart Service Transformation in Manufacturing: Insights from Theory and Practice,” 2024."},"language":[{"iso":"eng"}],"date_updated":"2023-11-06T15:40:33Z","_id":"48632","conference":{"location":"Hawaii","name":"Hawaii International Conference on System Sciences","start_date":"2024-01-03","end_date":"2024-01-06"}},{"author":[{"last_name":"Philipp","full_name":"Philipp, Friedrich M.","first_name":"Friedrich M."},{"first_name":"Manuel","full_name":"Schaller, Manuel","last_name":"Schaller"},{"last_name":"Boshoff","full_name":"Boshoff, Septimus","first_name":"Septimus"},{"id":"47427","last_name":"Peitz","full_name":"Peitz, Sebastian","orcid":"0000-0002-3389-793X","first_name":"Sebastian"},{"full_name":"Nüske, Feliks","first_name":"Feliks","last_name":"Nüske"},{"last_name":"Worthmann","full_name":"Worthmann, Karl","first_name":"Karl"}],"publication":"arXiv:2402.02494","department":[{"_id":"655"}],"status":"public","date_created":"2024-02-06T08:52:21Z","external_id":{"arxiv":["2402.02494"]},"abstract":[{"text":"We rigorously derive novel and sharp finite-data error bounds for highly\r\nsample-efficient Extended Dynamic Mode Decomposition (EDMD) for both i.i.d. and\r\nergodic sampling. In particular, we show all results in a very general setting\r\nremoving most of the typically imposed assumptions such that, among others,\r\ndiscrete- and continuous-time stochastic processes as well as nonlinear partial\r\ndifferential equations are contained in the considered system class. Besides\r\nshowing an exponential rate for i.i.d. sampling, we prove, to the best of our\r\nknowledge, the first superlinear convergence rates for ergodic sampling of\r\ndeterministic systems. We verify sharpness of the derived error bounds by\r\nconducting numerical simulations for highly-complex applications from molecular\r\ndynamics and chaotic flame propagation.","lang":"eng"}],"title":"Extended Dynamic Mode Decomposition: Sharp bounds on the sample efficiency","user_id":"47427","main_file_link":[{"open_access":"1","url":"https://arxiv.org/pdf/2402.02494.pdf"}],"type":"preprint","year":"2024","citation":{"apa":"Philipp, F. M., Schaller, M., Boshoff, S., Peitz, S., Nüske, F., & Worthmann, K. (2024). Extended Dynamic Mode Decomposition: Sharp bounds on the sample efficiency. In arXiv:2402.02494.","ama":"Philipp FM, Schaller M, Boshoff S, Peitz S, Nüske F, Worthmann K. Extended Dynamic Mode Decomposition: Sharp bounds on the sample efficiency. arXiv:240202494. Published online 2024.","chicago":"Philipp, Friedrich M., Manuel Schaller, Septimus Boshoff, Sebastian Peitz, Feliks Nüske, and Karl Worthmann. “Extended Dynamic Mode Decomposition: Sharp Bounds on the Sample Efficiency.” ArXiv:2402.02494, 2024.","mla":"Philipp, Friedrich M., et al. “Extended Dynamic Mode Decomposition: Sharp Bounds on the Sample Efficiency.” ArXiv:2402.02494, 2024.","bibtex":"@article{Philipp_Schaller_Boshoff_Peitz_Nüske_Worthmann_2024, title={Extended Dynamic Mode Decomposition: Sharp bounds on the sample efficiency}, journal={arXiv:2402.02494}, author={Philipp, Friedrich M. and Schaller, Manuel and Boshoff, Septimus and Peitz, Sebastian and Nüske, Feliks and Worthmann, Karl}, year={2024} }","short":"F.M. Philipp, M. Schaller, S. Boshoff, S. Peitz, F. Nüske, K. Worthmann, ArXiv:2402.02494 (2024).","ieee":"F. M. Philipp, M. Schaller, S. Boshoff, S. Peitz, F. Nüske, and K. Worthmann, “Extended Dynamic Mode Decomposition: Sharp bounds on the sample efficiency,” arXiv:2402.02494. 2024."},"language":[{"iso":"eng"}],"_id":"51160","date_updated":"2024-02-06T08:52:44Z","oa":"1"},{"publication_status":"published","department":[{"_id":"728"}],"title":"Fast model-based calibration of multiple injections for a CI engine using nonlinear optimal control","language":[{"iso":"eng"}],"doi":"10.1016/j.conengprac.2024.105848","oa":"1","date_updated":"2024-01-30T10:26:44Z","volume":145,"status":"public","date_created":"2024-01-25T16:23:36Z","quality_controlled":"1","author":[{"last_name":"Moretto","full_name":"Moretto, Giordano ","first_name":"Giordano "},{"last_name":"Schnell","first_name":"Nicolas ","full_name":"Schnell, Nicolas "},{"first_name":"Jonathan ","full_name":"Frey, Jonathan ","last_name":"Frey"},{"last_name":"Karakaya","id":"95069","first_name":"Yasin","full_name":"Karakaya, Yasin"},{"first_name":"Alois","full_name":"Amstutz, Alois","last_name":"Amstutz"},{"full_name":"Diehl, Moritz","first_name":"Moritz","last_name":"Diehl"},{"full_name":"Kasper, Tina","orcid":"0000-0003-3993-5316 ","first_name":"Tina","id":"94562","last_name":"Kasper"},{"last_name":"Onder","first_name":"Christopher","full_name":"Onder, Christopher"}],"publication":"Control Engineering Practice","user_id":"95069","article_type":"original","type":"journal_article","citation":{"ieee":"G. Moretto et al., “Fast model-based calibration of multiple injections for a CI engine using nonlinear optimal control,” Control Engineering Practice, vol. 145, p. 105848, 2024, doi: 10.1016/j.conengprac.2024.105848.","short":"G. Moretto, N. Schnell, J. Frey, Y. Karakaya, A. Amstutz, M. Diehl, T. Kasper, C. Onder, Control Engineering Practice 145 (2024) 105848.","mla":"Moretto, Giordano, et al. “Fast Model-Based Calibration of Multiple Injections for a CI Engine Using Nonlinear Optimal Control.” Control Engineering Practice, vol. 145, 2024, p. 105848, doi:10.1016/j.conengprac.2024.105848.","bibtex":"@article{Moretto_Schnell_Frey_Karakaya_Amstutz_Diehl_Kasper_Onder_2024, title={Fast model-based calibration of multiple injections for a CI engine using nonlinear optimal control}, volume={145}, DOI={10.1016/j.conengprac.2024.105848}, journal={Control Engineering Practice}, author={Moretto, Giordano and Schnell, Nicolas and Frey, Jonathan and Karakaya, Yasin and Amstutz, Alois and Diehl, Moritz and Kasper, Tina and Onder, Christopher}, year={2024}, pages={105848} }","apa":"Moretto, G., Schnell, N., Frey, J., Karakaya, Y., Amstutz, A., Diehl, M., Kasper, T., & Onder, C. (2024). Fast model-based calibration of multiple injections for a CI engine using nonlinear optimal control. Control Engineering Practice, 145, 105848. https://doi.org/10.1016/j.conengprac.2024.105848","ama":"Moretto G, Schnell N, Frey J, et al. Fast model-based calibration of multiple injections for a CI engine using nonlinear optimal control. Control Engineering Practice. 2024;145:105848. doi:10.1016/j.conengprac.2024.105848","chicago":"Moretto, Giordano , Nicolas Schnell, Jonathan Frey, Yasin Karakaya, Alois Amstutz, Moritz Diehl, Tina Kasper, and Christopher Onder. “Fast Model-Based Calibration of Multiple Injections for a CI Engine Using Nonlinear Optimal Control.” Control Engineering Practice 145 (2024): 105848. https://doi.org/10.1016/j.conengprac.2024.105848."},"year":"2024","page":"105848","main_file_link":[{"open_access":"1","url":"https://www.sciencedirect.com/science/article/pii/S096706612400008X"}],"intvolume":" 145","_id":"50841"},{"date_created":"2023-07-12T06:35:58Z","status":"public","publication_status":"published","department":[{"_id":"101"},{"_id":"655"}],"publication":"Journal of Optimization Theory and Applications","publisher":"Springer","author":[{"first_name":"Konstantin","orcid":"https://orcid.org/0000-0003-3384-3496","full_name":"Sonntag, Konstantin","last_name":"Sonntag","id":"56399"},{"full_name":"Peitz, Sebastian","orcid":"0000-0002-3389-793X","first_name":"Sebastian","id":"47427","last_name":"Peitz"}],"user_id":"56399","title":"Fast Multiobjective Gradient Methods with Nesterov Acceleration via Inertial Gradient-Like Systems","abstract":[{"text":"We derive efficient algorithms to compute weakly Pareto optimal solutions for smooth, convex and unconstrained multiobjective optimization problems in general Hilbert spaces. To this end, we define a novel inertial gradient-like dynamical system in the multiobjective setting, which trajectories converge weakly to Pareto optimal solutions. Discretization of this system yields an inertial multiobjective algorithm which generates sequences that converge weakly to Pareto optimal solutions. We employ Nesterov acceleration to define an algorithm with an improved convergence rate compared to the plain multiobjective steepest descent method (Algorithm 1). A further improvement in terms of efficiency is achieved by avoiding the solution of a quadratic subproblem to compute a common step direction for all objective functions, which is usually required in first-order methods. Using a different discretization of our inertial gradient-like dynamical system, we obtain an accelerated multiobjective gradient method that does not require the solution of a subproblem in each step (Algorithm 2). While this algorithm does not converge in general, it yields good results on test problems while being faster than standard steepest descent.","lang":"eng"}],"language":[{"iso":"eng"}],"year":"2024","citation":{"ieee":"K. Sonntag and S. Peitz, “Fast Multiobjective Gradient Methods with Nesterov Acceleration via Inertial Gradient-Like Systems,” Journal of Optimization Theory and Applications, 2024, doi: 10.1007/s10957-024-02389-3.","short":"K. Sonntag, S. Peitz, Journal of Optimization Theory and Applications (2024).","mla":"Sonntag, Konstantin, and Sebastian Peitz. “Fast Multiobjective Gradient Methods with Nesterov Acceleration via Inertial Gradient-Like Systems.” Journal of Optimization Theory and Applications, Springer, 2024, doi:10.1007/s10957-024-02389-3.","bibtex":"@article{Sonntag_Peitz_2024, title={Fast Multiobjective Gradient Methods with Nesterov Acceleration via Inertial Gradient-Like Systems}, DOI={10.1007/s10957-024-02389-3}, journal={Journal of Optimization Theory and Applications}, publisher={Springer}, author={Sonntag, Konstantin and Peitz, Sebastian}, year={2024} }","chicago":"Sonntag, Konstantin, and Sebastian Peitz. “Fast Multiobjective Gradient Methods with Nesterov Acceleration via Inertial Gradient-Like Systems.” Journal of Optimization Theory and Applications, 2024. https://doi.org/10.1007/s10957-024-02389-3.","apa":"Sonntag, K., & Peitz, S. (2024). Fast Multiobjective Gradient Methods with Nesterov Acceleration via Inertial Gradient-Like Systems. Journal of Optimization Theory and Applications. https://doi.org/10.1007/s10957-024-02389-3","ama":"Sonntag K, Peitz S. Fast Multiobjective Gradient Methods with Nesterov Acceleration via Inertial Gradient-Like Systems. Journal of Optimization Theory and Applications. Published online 2024. doi:10.1007/s10957-024-02389-3"},"type":"journal_article","main_file_link":[{"open_access":"1","url":"https://link.springer.com/content/pdf/10.1007/s10957-024-02389-3.pdf"}],"oa":"1","doi":"10.1007/s10957-024-02389-3","date_updated":"2024-02-21T10:13:33Z","_id":"46019"},{"external_id":{"arxiv":["2403.12147"]},"abstract":[{"text":"We prove Feynman-Kac formulas for the semigroups generated by selfadjoint\r\noperators in a class containing Fr\\\"ohlich Hamiltonians known from solid state\r\nphysics. The latter model multi-polarons, i.e., a fixed number of quantum\r\nmechanical electrons moving in a polarizable crystal and interacting with the\r\nquantized phonon field generated by the crystal's vibrational modes. Both the\r\nelectrons and phonons can be confined to suitable open subsets of Euclidean\r\nspace. We also include possibly very singular magnetic vector potentials and\r\nelectrostatic potentials. Our Feynman-Kac formulas comprise Fock space\r\noperator-valued multiplicative functionals and can be applied to every vector\r\nin the underlying Hilbert space. In comparison to the renormalized Nelson\r\nmodel, for which analogous Feynman-Kac formulas are known, the analysis of the\r\ncreation and annihilation terms in the multiplicative functionals requires\r\nnovel ideas to overcome difficulties caused by the phonon dispersion relation\r\nbeing constant. Getting these terms under control and generalizing other\r\nconstruction steps so as to cover confined systems are the main achievements of\r\nthis article.","lang":"eng"}],"user_id":"99427","title":"Feynman-Kac formulas for semigroups generated by multi-polaron Hamiltonians in magnetic fields and on general domains","department":[{"_id":"799"}],"publication":"arXiv:2403.12147","author":[{"orcid":"0000-0001-9074-1205","full_name":"Hinrichs, Benjamin","first_name":"Benjamin","id":"99427","last_name":"Hinrichs"},{"full_name":"Matte, Oliver","first_name":"Oliver","last_name":"Matte"}],"date_created":"2024-03-20T14:56:05Z","status":"public","date_updated":"2024-03-20T14:56:50Z","_id":"52691","language":[{"iso":"eng"}],"year":"2024","citation":{"bibtex":"@article{Hinrichs_Matte_2024, title={Feynman-Kac formulas for semigroups generated by multi-polaron Hamiltonians in magnetic fields and on general domains}, journal={arXiv:2403.12147}, author={Hinrichs, Benjamin and Matte, Oliver}, year={2024} }","mla":"Hinrichs, Benjamin, and Oliver Matte. “Feynman-Kac Formulas for Semigroups Generated by Multi-Polaron Hamiltonians in Magnetic Fields and on General Domains.” ArXiv:2403.12147, 2024.","chicago":"Hinrichs, Benjamin, and Oliver Matte. “Feynman-Kac Formulas for Semigroups Generated by Multi-Polaron Hamiltonians in Magnetic Fields and on General Domains.” ArXiv:2403.12147, 2024.","apa":"Hinrichs, B., & Matte, O. (2024). Feynman-Kac formulas for semigroups generated by multi-polaron Hamiltonians in magnetic fields and on general domains. In arXiv:2403.12147.","ama":"Hinrichs B, Matte O. Feynman-Kac formulas for semigroups generated by multi-polaron Hamiltonians in magnetic fields and on general domains. arXiv:240312147. Published online 2024.","ieee":"B. Hinrichs and O. Matte, “Feynman-Kac formulas for semigroups generated by multi-polaron Hamiltonians in magnetic fields and on general domains,” arXiv:2403.12147. 2024.","short":"B. Hinrichs, O. Matte, ArXiv:2403.12147 (2024)."},"type":"preprint"},{"_id":"51764","date_updated":"2024-02-23T07:31:25Z","language":[{"iso":"ger"}],"type":"book_editor","citation":{"mla":"Adelmann, Ralf, et al., editors. Filter – Medienwissenschaftliche Symposien der DFG. MediaRep.","bibtex":"@book{Adelmann_Matzner_Miggelbrink_Schulz, place={Marburg }, title={Filter – Medienwissenschaftliche Symposien der DFG}, publisher={MediaRep} }","ama":"Adelmann R, Matzner T, Miggelbrink M, Schulz C, eds. Filter – Medienwissenschaftliche Symposien der DFG. MediaRep","apa":"Adelmann, R., Matzner, T., Miggelbrink, M., & Schulz, C. (Eds.). (n.d.). Filter – Medienwissenschaftliche Symposien der DFG. MediaRep.","chicago":"Adelmann, Ralf , Tobias Matzner, Monique Miggelbrink, and Christian Schulz, eds. Filter – Medienwissenschaftliche Symposien der DFG. Marburg : MediaRep, n.d.","ieee":"R. Adelmann, T. Matzner, M. Miggelbrink, and C. Schulz, Eds., Filter – Medienwissenschaftliche Symposien der DFG. Marburg : MediaRep.","short":"R. Adelmann, T. Matzner, M. Miggelbrink, C. Schulz, eds., Filter – Medienwissenschaftliche Symposien der DFG, MediaRep, Marburg , n.d."},"year":"2024","place":"Marburg ","user_id":"72684","title":"Filter – Medienwissenschaftliche Symposien der DFG","department":[{"_id":"757"}],"publisher":"MediaRep","date_created":"2024-02-22T15:06:56Z","status":"public","publication_status":"inpress","editor":[{"full_name":"Adelmann, Ralf ","first_name":"Ralf ","last_name":"Adelmann"},{"last_name":"Matzner","first_name":"Tobias","full_name":"Matzner, Tobias"},{"first_name":"Monique ","full_name":"Miggelbrink, Monique ","last_name":"Miggelbrink"},{"last_name":"Schulz","first_name":"Christian ","full_name":"Schulz, Christian "}]}]