--- _id: '33997' abstract: - lang: eng text: "Digital platforms have already led to disruptions in multiple B2C markets and are becoming increasingly dominant in B2B markets. As a result, more and more companies are trying to participate in the platform economy. However, the successful development and operation of a digital platform is associated with significant challenges, which leads to 85% of all platforms failing. A core challenge is the dynamic nature of the platform economy, with varying strategic objectives at different stages in the platform lifecycle. Platform operators must continuously monitor platform progress and adjust their strategy.\r\nUtilizing action research in the real-world platform project AI Marketplace, we developed a lifecycle-oriented performance management approach for digital platforms in B2B markets. It enables platform operators to reflect on their position in the platform lifecycle, derive relevant strategic objectives, and monitor them with suitable key performance indicators. Hence, allowing them to secure the long-term success of their platform business." author: - first_name: Leon full_name: Özcan, Leon id: '45137' last_name: Özcan - first_name: Lisa full_name: Kirchberg, Lisa last_name: Kirchberg - first_name: Christian full_name: Koldewey, Christian last_name: Koldewey - first_name: Roman full_name: Dumitrescu, Roman last_name: Dumitrescu citation: ama: 'Özcan L, Kirchberg L, Koldewey C, Dumitrescu R. Performance Management Approach for Digital Platforms in B2B Markets. In: Bitran I, Bitetti L, Conn S, et al., eds. The Role of Innovation: Past, Present, Future. ; 2022.' apa: 'Özcan, L., Kirchberg, L., Koldewey, C., & Dumitrescu, R. (2022). Performance Management Approach for Digital Platforms in B2B Markets. In I. Bitran, L. Bitetti, S. Conn, J. Fishburn, E. Huizingh, M. Torkkeli, & J. Yang (Eds.), The Role of Innovation: Past, Present, Future.' bibtex: '@inproceedings{Özcan_Kirchberg_Koldewey_Dumitrescu_2022, place={Athens}, title={Performance Management Approach for Digital Platforms in B2B Markets}, booktitle={The Role of Innovation: Past, Present, Future}, author={Özcan, Leon and Kirchberg, Lisa and Koldewey, Christian and Dumitrescu, Roman}, editor={Bitran, Iain and Bitetti, Leandro and Conn, Steffen and Fishburn, Jessica and Huizingh, Eelko and Torkkeli, Marko and Yang, Jialei}, year={2022} }' chicago: 'Özcan, Leon, Lisa Kirchberg, Christian Koldewey, and Roman Dumitrescu. “Performance Management Approach for Digital Platforms in B2B Markets.” In The Role of Innovation: Past, Present, Future, edited by Iain Bitran, Leandro Bitetti, Steffen Conn, Jessica Fishburn, Eelko Huizingh, Marko Torkkeli, and Jialei Yang. Athens, 2022.' ieee: 'L. Özcan, L. Kirchberg, C. Koldewey, and R. Dumitrescu, “Performance Management Approach for Digital Platforms in B2B Markets,” in The Role of Innovation: Past, Present, Future, Athens, 2022.' mla: 'Özcan, Leon, et al. “Performance Management Approach for Digital Platforms in B2B Markets.” The Role of Innovation: Past, Present, Future, edited by Iain Bitran et al., 2022.' short: 'L. Özcan, L. Kirchberg, C. Koldewey, R. Dumitrescu, in: I. Bitran, L. Bitetti, S. Conn, J. Fishburn, E. Huizingh, M. Torkkeli, J. Yang (Eds.), The Role of Innovation: Past, Present, Future, Athens, 2022.' conference: end_date: 2022-11-30 location: Athens name: ISPIM Connects Athens start_date: 2022-11-28 date_created: 2022-11-04T07:31:57Z date_updated: 2022-11-04T07:33:54Z ddc: - '600' department: - _id: '563' editor: - first_name: Iain full_name: Bitran, Iain last_name: Bitran - first_name: Leandro full_name: Bitetti, Leandro last_name: Bitetti - first_name: Steffen full_name: ' Conn, Steffen' last_name: ' Conn' - first_name: Jessica full_name: Fishburn, Jessica last_name: Fishburn - first_name: 'Eelko ' full_name: 'Huizingh, Eelko ' last_name: Huizingh - first_name: Marko full_name: Torkkeli, Marko last_name: Torkkeli - first_name: Jialei full_name: Yang, Jialei last_name: Yang file: - access_level: closed content_type: application/pdf creator: loezcan date_created: 2022-11-04T07:30:29Z date_updated: 2022-11-04T07:30:29Z file_id: '33998' file_name: '[ÖKK+22] Performance Management Approach for Digital Platforms in B2B Markets.pdf' file_size: 694337 relation: main_file success: 1 file_date_updated: 2022-11-04T07:30:29Z has_accepted_license: '1' keyword: - Digital Platform - Two-Sided Market - Multi-Sided Market - Platform Lifecycle - Platform Monitoring - Performance Management language: - iso: eng place: Athens publication: 'The Role of Innovation: Past, Present, Future' publication_identifier: unknown: - 978-952-65069-1-3 status: public title: Performance Management Approach for Digital Platforms in B2B Markets type: conference user_id: '45137' year: '2022' ... --- _id: '32416' abstract: - lang: eng text: In recent years, sequence-defined oligomers (SDOs) gained increasing interest due to their perfectly controlled molecular structure, thus providing defined properties. In order to tune the properties, different functionalities need to be incorporated into the oligomers and the chain tacticity needs to be controlled. Beside the synthesis of SDOs, suitable methods need to be found to analyze the molecular structure. In this work, oligomers exhibiting an alternating or block-wise sequence of side chain functionalities were analyzed using a hyphenation of ultra-high-performance liquid chromatography and electrospray ionization mass spectrometry enhanced by ion mobility separation (IMS). Moieties in the side chains were varied according to polarity and bulkiness. Moreover, chain tacticity was varied. Drift times in the IMS cell and the corresponding collision cross section (CCS) values were shown to be individual parameters allowing the identification of SDOs, even in the case that SDO structures only differ in sequence or tacticity of side chain functionalities. Thus, a library of CCS values was obtained as reference used for the analysis of complex mixtures of SDOs. article_type: original author: - first_name: Marie-Theres full_name: Berg, Marie-Theres last_name: Berg - first_name: Artjom full_name: Herberg, Artjom id: '94' last_name: Herberg - first_name: Dirk full_name: Kuckling, Dirk id: '287' last_name: Kuckling citation: ama: Berg M-T, Herberg A, Kuckling D. Hyphenation of ultra-high-performance liquid chromatography and ion mobility mass spectrometry for the analysis of sequence-defined oligomers with different functionalities and tacticity. International Journal of Polymer Analysis and Characterization. Published online 2022:1-12. doi:10.1080/1023666x.2022.2100968 apa: Berg, M.-T., Herberg, A., & Kuckling, D. (2022). Hyphenation of ultra-high-performance liquid chromatography and ion mobility mass spectrometry for the analysis of sequence-defined oligomers with different functionalities and tacticity. International Journal of Polymer Analysis and Characterization, 1–12. https://doi.org/10.1080/1023666x.2022.2100968 bibtex: '@article{Berg_Herberg_Kuckling_2022, title={Hyphenation of ultra-high-performance liquid chromatography and ion mobility mass spectrometry for the analysis of sequence-defined oligomers with different functionalities and tacticity}, DOI={10.1080/1023666x.2022.2100968}, journal={International Journal of Polymer Analysis and Characterization}, publisher={Informa UK Limited}, author={Berg, Marie-Theres and Herberg, Artjom and Kuckling, Dirk}, year={2022}, pages={1–12} }' chicago: Berg, Marie-Theres, Artjom Herberg, and Dirk Kuckling. “Hyphenation of Ultra-High-Performance Liquid Chromatography and Ion Mobility Mass Spectrometry for the Analysis of Sequence-Defined Oligomers with Different Functionalities and Tacticity.” International Journal of Polymer Analysis and Characterization, 2022, 1–12. https://doi.org/10.1080/1023666x.2022.2100968. ieee: 'M.-T. Berg, A. Herberg, and D. Kuckling, “Hyphenation of ultra-high-performance liquid chromatography and ion mobility mass spectrometry for the analysis of sequence-defined oligomers with different functionalities and tacticity,” International Journal of Polymer Analysis and Characterization, pp. 1–12, 2022, doi: 10.1080/1023666x.2022.2100968.' mla: Berg, Marie-Theres, et al. “Hyphenation of Ultra-High-Performance Liquid Chromatography and Ion Mobility Mass Spectrometry for the Analysis of Sequence-Defined Oligomers with Different Functionalities and Tacticity.” International Journal of Polymer Analysis and Characterization, Informa UK Limited, 2022, pp. 1–12, doi:10.1080/1023666x.2022.2100968. short: M.-T. Berg, A. Herberg, D. Kuckling, International Journal of Polymer Analysis and Characterization (2022) 1–12. date_created: 2022-07-26T06:38:52Z date_updated: 2023-01-10T08:14:52Z department: - _id: '163' doi: 10.1080/1023666x.2022.2100968 keyword: - Ultra-high-performance liquid chromatography - ion mobility separation - mass spectrometry - LC-MS hyphenation - sequence-defined oligomers language: - iso: eng page: 1-12 publication: International Journal of Polymer Analysis and Characterization publication_identifier: issn: - 1023-666X - 1563-5341 publication_status: published publisher: Informa UK Limited status: public title: Hyphenation of ultra-high-performance liquid chromatography and ion mobility mass spectrometry for the analysis of sequence-defined oligomers with different functionalities and tacticity type: journal_article user_id: '94' year: '2022' ... --- _id: '44529' abstract: - lang: eng text: "According to the German Rectors’ Conference (HRK), German higher education teaching fails to\r\nmeet the demand to integrate competence-oriented learning objectives. Despite a wide-ranging debate on the use of learning objectives, empirical research on their effectiveness is scarce. The present study uses the features of digital teaching platforms to investigate the perception and effectiveness of learning objectives applying a randomised controlled experiment followed by a survey in a course for undergraduate economics students (N = 30). Controlling group preconditions and the treatment effect allows to draw conclusions about the different learning outcomes of the student groups. The specification of behaviour-oriented learning objectives in the online course system leads to significantly better performance in the treatment group. A stronger perception of the learning objectives in the treatment group supports this effect that remains significant in a regression analysis. Thus, the study provides an empirical justification to integrate learning objectives in university teaching." article_type: original author: - first_name: Thorsten Fabian full_name: Auer, Thorsten Fabian id: '49071' last_name: Auer citation: ama: Auer TF. Die Wirksamkeit von Lernzielen für Studienleistungen – eine experimentelle Studie. die hochschullehre. 2022;8(1):662-675. doi:http://doi.org/10.3278/HSL2248W apa: Auer, T. F. (2022). Die Wirksamkeit von Lernzielen für Studienleistungen – eine experimentelle Studie. die hochschullehre, 8(1), 662–675. https://doi.org/10.3278/HSL2248W bibtex: '@article{Auer_2022, title={Die Wirksamkeit von Lernzielen für Studienleistungen – eine experimentelle Studie}, volume={8}, DOI={http://doi.org/10.3278/HSL2248W}, number={1}, journal={die hochschullehre}, author={Auer, Thorsten Fabian}, year={2022}, pages={662–675} }' chicago: 'Auer, Thorsten Fabian. “Die Wirksamkeit von Lernzielen für Studienleistungen – eine experimentelle Studie.” die hochschullehre 8, no. 1 (2022): 662–75. https://doi.org/10.3278/HSL2248W.' ieee: 'T. F. Auer, “Die Wirksamkeit von Lernzielen für Studienleistungen – eine experimentelle Studie,” die hochschullehre, vol. 8, no. 1, pp. 662–675, 2022, doi: http://doi.org/10.3278/HSL2248W.' mla: Auer, Thorsten Fabian. “Die Wirksamkeit von Lernzielen für Studienleistungen – eine experimentelle Studie.” die hochschullehre, vol. 8, no. 1, 2022, pp. 662–75, doi:http://doi.org/10.3278/HSL2248W. short: T.F. Auer, die hochschullehre 8 (2022) 662–675. date_created: 2023-05-05T17:19:24Z date_updated: 2023-11-23T08:06:46Z department: - _id: '178' - _id: '184' doi: http://doi.org/10.3278/HSL2248W intvolume: ' 8' issue: '1' keyword: - learning objectives - academic performance - perception - teaching methods - experiment language: - iso: ger main_file_link: - open_access: '1' url: https://die-hochschullehre.de/articles/abstract/10.3278/HSL2248W/#downloads oa: '1' page: 662-675 publication: die hochschullehre publication_identifier: issn: - 2199-8825 publication_status: published quality_controlled: '1' status: public title: Die Wirksamkeit von Lernzielen für Studienleistungen – eine experimentelle Studie type: journal_article user_id: '49071' volume: 8 year: '2022' ... --- _id: '48882' abstract: - lang: eng text: In multimodal multi-objective optimization (MMMOO), the focus is not solely on convergence in objective space, but rather also on explicitly ensuring diversity in decision space. We illustrate why commonly used diversity measures are not entirely appropriate for this task and propose a sophisticated basin-based evaluation (BBE) method. Also, BBE variants are developed, capturing the anytime behavior of algorithms. The set of BBE measures is tested by means of an algorithm configuration study. We show that these new measures also transfer properties of the well-established hypervolume (HV) indicator to the domain of MMMOO, thus also accounting for objective space convergence. Moreover, we advance MMMOO research by providing insights into the multimodal performance of the considered algorithms. Specifically, algorithms exploiting local structures are shown to outperform classical evolutionary multi-objective optimizers regarding the BBE variants and respective trade-off with HV. author: - first_name: Jonathan full_name: Heins, Jonathan last_name: Heins - first_name: Jeroen full_name: Rook, Jeroen last_name: Rook - first_name: Lennart full_name: Schäpermeier, Lennart last_name: Schäpermeier - first_name: Pascal full_name: Kerschke, Pascal last_name: Kerschke - first_name: Jakob full_name: Bossek, Jakob id: '102979' last_name: Bossek orcid: 0000-0002-4121-4668 - first_name: Heike full_name: Trautmann, Heike last_name: Trautmann citation: ama: 'Heins J, Rook J, Schäpermeier L, Kerschke P, Bossek J, Trautmann H. BBE: Basin-Based Evaluation of Multimodal Multi-objective Optimization Problems. In: Rudolph G, Kononova AV, Aguirre H, Kerschke P, Ochoa G, Tusar T, eds. Parallel Problem Solving from Nature (PPSN XVII). Lecture Notes in Computer Science. Springer International Publishing; 2022:192–206. doi:10.1007/978-3-031-14714-2_14' apa: 'Heins, J., Rook, J., Schäpermeier, L., Kerschke, P., Bossek, J., & Trautmann, H. (2022). BBE: Basin-Based Evaluation of Multimodal Multi-objective Optimization Problems. In G. Rudolph, A. V. Kononova, H. Aguirre, P. Kerschke, G. Ochoa, & T. Tusar (Eds.), Parallel Problem Solving from Nature (PPSN XVII) (pp. 192–206). Springer International Publishing. https://doi.org/10.1007/978-3-031-14714-2_14' bibtex: '@inproceedings{Heins_Rook_Schäpermeier_Kerschke_Bossek_Trautmann_2022, place={Cham}, series={Lecture Notes in Computer Science}, title={BBE: Basin-Based Evaluation of Multimodal Multi-objective Optimization Problems}, DOI={10.1007/978-3-031-14714-2_14}, booktitle={Parallel Problem Solving from Nature (PPSN XVII)}, publisher={Springer International Publishing}, author={Heins, Jonathan and Rook, Jeroen and Schäpermeier, Lennart and Kerschke, Pascal and Bossek, Jakob and Trautmann, Heike}, editor={Rudolph, Günter and Kononova, Anna V. and Aguirre, Hernán and Kerschke, Pascal and Ochoa, Gabriela and Tusar, Tea}, year={2022}, pages={192–206}, collection={Lecture Notes in Computer Science} }' chicago: 'Heins, Jonathan, Jeroen Rook, Lennart Schäpermeier, Pascal Kerschke, Jakob Bossek, and Heike Trautmann. “BBE: Basin-Based Evaluation of Multimodal Multi-Objective Optimization Problems.” In Parallel Problem Solving from Nature (PPSN XVII), edited by Günter Rudolph, Anna V. Kononova, Hernán Aguirre, Pascal Kerschke, Gabriela Ochoa, and Tea Tusar, 192–206. Lecture Notes in Computer Science. Cham: Springer International Publishing, 2022. https://doi.org/10.1007/978-3-031-14714-2_14.' ieee: 'J. Heins, J. Rook, L. Schäpermeier, P. Kerschke, J. Bossek, and H. Trautmann, “BBE: Basin-Based Evaluation of Multimodal Multi-objective Optimization Problems,” in Parallel Problem Solving from Nature (PPSN XVII), 2022, pp. 192–206, doi: 10.1007/978-3-031-14714-2_14.' mla: 'Heins, Jonathan, et al. “BBE: Basin-Based Evaluation of Multimodal Multi-Objective Optimization Problems.” Parallel Problem Solving from Nature (PPSN XVII), edited by Günter Rudolph et al., Springer International Publishing, 2022, pp. 192–206, doi:10.1007/978-3-031-14714-2_14.' short: 'J. Heins, J. Rook, L. Schäpermeier, P. Kerschke, J. Bossek, H. Trautmann, in: G. Rudolph, A.V. Kononova, H. Aguirre, P. Kerschke, G. Ochoa, T. Tusar (Eds.), Parallel Problem Solving from Nature (PPSN XVII), Springer International Publishing, Cham, 2022, pp. 192–206.' date_created: 2023-11-14T15:58:58Z date_updated: 2023-12-13T10:47:50Z department: - _id: '819' doi: 10.1007/978-3-031-14714-2_14 editor: - first_name: Günter full_name: Rudolph, Günter last_name: Rudolph - first_name: Anna V. full_name: Kononova, Anna V. last_name: Kononova - first_name: Hernán full_name: Aguirre, Hernán last_name: Aguirre - first_name: Pascal full_name: Kerschke, Pascal last_name: Kerschke - first_name: Gabriela full_name: Ochoa, Gabriela last_name: Ochoa - first_name: Tea full_name: Tusar, Tea last_name: Tusar extern: '1' keyword: - Anytime behavior - Benchmarking - Continuous optimization - Multi-objective optimization - Multimodality - Performance metric language: - iso: eng page: 192–206 place: Cham publication: Parallel Problem Solving from Nature (PPSN XVII) publication_identifier: isbn: - 978-3-031-14714-2 publisher: Springer International Publishing series_title: Lecture Notes in Computer Science status: public title: 'BBE: Basin-Based Evaluation of Multimodal Multi-objective Optimization Problems' type: conference user_id: '102979' year: '2022' ... --- _id: '24550' abstract: - lang: eng text: "Efficiencies and energy yields of microinverters available on the market during 2014‒2021 have been \r\nmeasured, compared, and ranked. Conversion efficiencies as a function of load have been measured indoors with high \r\naccuracy and ranked according to Euro- and CEC weightings. Energy yields have been measured outdoors via \r\nidentical and calibrated crystalline silicon PV modules of 215 Wp (until 2020) and 360 Wp (starting 2021). Inverters \r\nwith two inputs have been fed by two of those modules. DC input, AC power output and energy yield of each micro\x02inverter have been recorded by individual calibrated electricity meters. CEC and EU efficiency rankings have been \r\ncomputed and compared. To assess the influence of PV module size, two extremes have been investigated: A rather \r\nsmall module with 215 Wp - as it has been used 10 years ago, and a brand-new module (2021) offering 360 Wp. Both \r\ntypes of modules contain 60 solar cells in series connection. Appling the low-power modules, the challenge for the \r\ndifferent micro-inverters has been during weak-light conditions, using the high-power modules, some inverters \r\ntemporarily reach their power limits and yield is reduced. A method using a reference configuration of inverter & \r\nmodule and a linear equation y = ax + b resulting in the actual yield, any module & inverter configuration can be \r\ncharacterized by just the coefficients a and b." author: - first_name: Stefan full_name: Krauter, Stefan id: '28836' last_name: Krauter orcid: 0000-0002-3594-260X - first_name: Jörg full_name: Bendfeld, Jörg id: '16148' last_name: Bendfeld citation: ama: 'Krauter S, Bendfeld J. Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields. In: Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021). ; 2021:659-663. doi:10.4229/EUPVSEC20212021-4CO.3.4' apa: 'Krauter, S., & Bendfeld, J. (2021). Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields. Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021), 659–663. https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4' bibtex: '@inproceedings{Krauter_Bendfeld_2021, title={Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields}, DOI={10.4229/EUPVSEC20212021-4CO.3.4}, booktitle={Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021)}, author={Krauter, Stefan and Bendfeld, Jörg}, year={2021}, pages={659–663} }' chicago: 'Krauter, Stefan, and Jörg Bendfeld. “Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields.” In Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021), 659–63, 2021. https://doi.org/10.4229/EUPVSEC20212021-4CO.3.4.' ieee: 'S. Krauter and J. Bendfeld, “Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields,” in Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021), 2021, pp. 659–663, doi: 10.4229/EUPVSEC20212021-4CO.3.4.' mla: 'Krauter, Stefan, and Jörg Bendfeld. “Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields.” Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021), 2021, pp. 659–63, doi:10.4229/EUPVSEC20212021-4CO.3.4.' short: 'S. Krauter, J. Bendfeld, in: Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021), 2021, pp. 659–663.' conference: end_date: 2021-09-10 name: 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC 2021) start_date: 2021-09-06 date_created: 2021-09-16T10:17:11Z date_updated: 2022-01-06T13:22:03Z ddc: - '620' department: - _id: '53' doi: 10.4229/EUPVSEC20212021-4CO.3.4 file: - access_level: closed content_type: application/pdf creator: krauter date_created: 2022-01-06T13:20:31Z date_updated: 2022-01-06T13:20:31Z file_id: '29175' file_name: Krauter Bendfeld - Module size Microinverters - EUPVSEC 2021.pdf file_size: 5413518 relation: main_file success: 1 file_date_updated: 2022-01-06T13:20:31Z has_accepted_license: '1' keyword: - AC-modules - Microinverter - Power Conditioning - Efficiency - Yield - PV module size - saturation - performance language: - iso: eng page: 659 - 663 publication: Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2021) publication_identifier: isbn: - 3-936338-78-7 publication_status: published quality_controlled: '1' status: public title: 'Module-Inverters (Microinverters): Influence of Module Size on Conversion Efficiencies and Energy Yields' type: conference user_id: '28836' year: '2021' ... --- _id: '18387' abstract: - lang: eng text: " During comparative measurements of different PV microinverters, two yield issues came up that could \r\nnot be explored via conventional efficiency measurements, but do have a significant impact on electrical energy \r\nyield: First category of issues are either sluggish or nervously acting maximum–power–point–tracking devices, which \r\nlead to reduced energy yields. The other category of issues is thermal: As a first explanation for observed reduced \r\nenergy yields, it has been assumed that the conversion efficiency degrades at higher operating temperatures. This \r\nmatter has been investigated in this article: A change in conversion efficiency could not be observed for elevated \r\noperation temperatures up to 50°C, despite high-precision and repeated measurements. But it was found that some \r\ninverters temporarily interrupted (or entirely stopped) operation after long periods of running at high temperatures. \r\nAlso, a reduction in potential maximum power output has been detected for those inverters. Summarizing: With a \r\nhigh degree of certainty it can be stated that those reported yield losses have been caused by the temporary shutdowns \r\nand power limitations of the inverters." author: - first_name: Stefan full_name: Krauter, Stefan id: '28836' last_name: Krauter orcid: 0000-0002-3594-260X - first_name: Jörg full_name: Bendfeld, Jörg id: '16148' last_name: Bendfeld citation: ama: 'Krauter S, Bendfeld J. Elevated Temperatures Affecting Efficiency, Overall Performance and Energy Yield of PV Microinverters. In: Proceedings of the EU PVSEC 2020 . ; 2020:1179-1180. doi:10.4229/EUPVSEC20202020-4AV.3.6' apa: Krauter, S., & Bendfeld, J. (2020). Elevated Temperatures Affecting Efficiency, Overall Performance and Energy Yield of PV Microinverters. Proceedings of the EU PVSEC 2020 , 1179–1180. https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6 bibtex: '@inproceedings{Krauter_Bendfeld_2020, title={Elevated Temperatures Affecting Efficiency, Overall Performance and Energy Yield of PV Microinverters}, DOI={10.4229/EUPVSEC20202020-4AV.3.6}, booktitle={Proceedings of the EU PVSEC 2020 }, author={Krauter, Stefan and Bendfeld, Jörg}, year={2020}, pages={1179–1180} }' chicago: Krauter, Stefan, and Jörg Bendfeld. “Elevated Temperatures Affecting Efficiency, Overall Performance and Energy Yield of PV Microinverters.” In Proceedings of the EU PVSEC 2020 , 1179–80, 2020. https://doi.org/10.4229/EUPVSEC20202020-4AV.3.6. ieee: 'S. Krauter and J. Bendfeld, “Elevated Temperatures Affecting Efficiency, Overall Performance and Energy Yield of PV Microinverters,” in Proceedings of the EU PVSEC 2020 , online, 2020, pp. 1179–1180, doi: 10.4229/EUPVSEC20202020-4AV.3.6.' mla: Krauter, Stefan, and Jörg Bendfeld. “Elevated Temperatures Affecting Efficiency, Overall Performance and Energy Yield of PV Microinverters.” Proceedings of the EU PVSEC 2020 , 2020, pp. 1179–80, doi:10.4229/EUPVSEC20202020-4AV.3.6. short: 'S. Krauter, J. Bendfeld, in: Proceedings of the EU PVSEC 2020 , 2020, pp. 1179–1180.' conference: end_date: 2020-09-11 location: online name: EU PVSEC 2020, 37th EU Photovoltaik Solar Energy Conference start_date: 2020-09-07 date_created: 2020-08-27T06:26:25Z date_updated: 2022-01-06T12:32:47Z ddc: - '620' department: - _id: '53' doi: 10.4229/EUPVSEC20202020-4AV.3.6 file: - access_level: closed content_type: application/pdf creator: krauter date_created: 2022-01-06T12:27:02Z date_updated: 2022-01-06T12:27:02Z file_id: '29171' file_name: Krauter Bendfeld - Microinverters at elevated temperatures EUPVSEC 2020.pdf file_size: 599660 relation: main_file success: 1 file_date_updated: 2022-01-06T12:27:02Z has_accepted_license: '1' jel: - Q42 keyword: - AC-modules - Microinverter - Power Conditioning - Thermal Performance - Ventilation - Stability - Efficiency - Yield language: - iso: eng page: 1179 - 1180 publication: 'Proceedings of the EU PVSEC 2020 ' publication_identifier: issn: - 3-936338-73-6 publication_status: published quality_controlled: '1' status: public title: Elevated Temperatures Affecting Efficiency, Overall Performance and Energy Yield of PV Microinverters type: conference user_id: '28836' year: '2020' ... --- _id: '46334' abstract: - lang: eng text: We build upon a recently proposed multi-objective view onto performance measurement of single-objective stochastic solvers. The trade-off between the fraction of failed runs and the mean runtime of successful runs – both to be minimized – is directly analyzed based on a study on algorithm selection of inexact state-of-the-art solvers for the famous Traveling Salesperson Problem (TSP). Moreover, we adopt the hypervolume indicator (HV) commonly used in multi-objective optimization for simultaneously assessing both conflicting objectives and investigate relations to commonly used performance indicators, both theoretically and empirically. Next to Penalized Average Runtime (PAR) and Penalized Quantile Runtime (PQR), the HV measure is used as a core concept within the construction of per-instance algorithm selection models offering interesting insights into complementary behavior of inexact TSP solvers. author: - first_name: Jakob full_name: Bossek, Jakob last_name: Bossek - first_name: Pascal full_name: Kerschke, Pascal last_name: Kerschke - first_name: Heike full_name: Trautmann, Heike id: '100740' last_name: Trautmann orcid: 0000-0002-9788-8282 citation: ama: Bossek J, Kerschke P, Trautmann H. A multi-objective perspective on performance assessment and automated selection of single-objective optimization algorithms. Applied Soft Computing. 2020;88:105901. doi:https://doi.org/10.1016/j.asoc.2019.105901 apa: Bossek, J., Kerschke, P., & Trautmann, H. (2020). A multi-objective perspective on performance assessment and automated selection of single-objective optimization algorithms. Applied Soft Computing, 88, 105901. https://doi.org/10.1016/j.asoc.2019.105901 bibtex: '@article{Bossek_Kerschke_Trautmann_2020, title={A multi-objective perspective on performance assessment and automated selection of single-objective optimization algorithms}, volume={88}, DOI={https://doi.org/10.1016/j.asoc.2019.105901}, journal={Applied Soft Computing}, author={Bossek, Jakob and Kerschke, Pascal and Trautmann, Heike}, year={2020}, pages={105901} }' chicago: 'Bossek, Jakob, Pascal Kerschke, and Heike Trautmann. “A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms.” Applied Soft Computing 88 (2020): 105901. https://doi.org/10.1016/j.asoc.2019.105901.' ieee: 'J. Bossek, P. Kerschke, and H. Trautmann, “A multi-objective perspective on performance assessment and automated selection of single-objective optimization algorithms,” Applied Soft Computing, vol. 88, p. 105901, 2020, doi: https://doi.org/10.1016/j.asoc.2019.105901.' mla: Bossek, Jakob, et al. “A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms.” Applied Soft Computing, vol. 88, 2020, p. 105901, doi:https://doi.org/10.1016/j.asoc.2019.105901. short: J. Bossek, P. Kerschke, H. Trautmann, Applied Soft Computing 88 (2020) 105901. date_created: 2023-08-04T07:42:26Z date_updated: 2023-10-16T13:07:59Z department: - _id: '34' - _id: '819' doi: https://doi.org/10.1016/j.asoc.2019.105901 intvolume: ' 88' keyword: - Algorithm selection - Multi-objective optimization - Performance measurement - Combinatorial optimization - Traveling Salesperson Problem language: - iso: eng page: '105901' publication: Applied Soft Computing publication_identifier: issn: - 1568-4946 status: public title: A multi-objective perspective on performance assessment and automated selection of single-objective optimization algorithms type: journal_article user_id: '15504' volume: 88 year: '2020' ... --- _id: '48848' abstract: - lang: eng text: We build upon a recently proposed multi-objective view onto performance measurement of single-objective stochastic solvers. The trade-off between the fraction of failed runs and the mean runtime of successful runs \textendash both to be minimized \textendash is directly analyzed based on a study on algorithm selection of inexact state-of-the-art solvers for the famous Traveling Salesperson Problem (TSP). Moreover, we adopt the hypervolume indicator (HV) commonly used in multi-objective optimization for simultaneously assessing both conflicting objectives and investigate relations to commonly used performance indicators, both theoretically and empirically. Next to Penalized Average Runtime (PAR) and Penalized Quantile Runtime (PQR), the HV measure is used as a core concept within the construction of per-instance algorithm selection models offering interesting insights into complementary behavior of inexact TSP solvers. \textbullet The multi-objective perspective is naturally generalizable to multiple objectives. \textbullet Proof of relationship between HV and the PAR in the considered bi-objective space. \textbullet New insights into complementary behavior of stochastic optimization algorithms. author: - first_name: Jakob full_name: Bossek, Jakob id: '102979' last_name: Bossek orcid: 0000-0002-4121-4668 - first_name: Pascal full_name: Kerschke, Pascal last_name: Kerschke - first_name: Heike full_name: Trautmann, Heike last_name: Trautmann citation: ama: Bossek J, Kerschke P, Trautmann H. A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms. Applied Soft Computing. 2020;88(C). doi:10.1016/j.asoc.2019.105901 apa: Bossek, J., Kerschke, P., & Trautmann, H. (2020). A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms. Applied Soft Computing, 88(C). https://doi.org/10.1016/j.asoc.2019.105901 bibtex: '@article{Bossek_Kerschke_Trautmann_2020, title={A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms}, volume={88}, DOI={10.1016/j.asoc.2019.105901}, number={C}, journal={Applied Soft Computing}, author={Bossek, Jakob and Kerschke, Pascal and Trautmann, Heike}, year={2020} }' chicago: Bossek, Jakob, Pascal Kerschke, and Heike Trautmann. “A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms.” Applied Soft Computing 88, no. C (2020). https://doi.org/10.1016/j.asoc.2019.105901. ieee: 'J. Bossek, P. Kerschke, and H. Trautmann, “A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms,” Applied Soft Computing, vol. 88, no. C, 2020, doi: 10.1016/j.asoc.2019.105901.' mla: Bossek, Jakob, et al. “A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms.” Applied Soft Computing, vol. 88, no. C, 2020, doi:10.1016/j.asoc.2019.105901. short: J. Bossek, P. Kerschke, H. Trautmann, Applied Soft Computing 88 (2020). date_created: 2023-11-14T15:58:53Z date_updated: 2023-12-13T10:52:17Z department: - _id: '819' doi: 10.1016/j.asoc.2019.105901 intvolume: ' 88' issue: C keyword: - Algorithm selection - Combinatorial optimization - Multi-objective optimization - Performance measurement - Traveling Salesperson Problem language: - iso: eng publication: Applied Soft Computing publication_identifier: issn: - 1568-4946 status: public title: A Multi-Objective Perspective on Performance Assessment and Automated Selection of Single-Objective Optimization Algorithms type: journal_article user_id: '102979' volume: 88 year: '2020' ... --- _id: '20688' abstract: - lang: eng text: We offer the first empirical analysis connecting the timing of general partner (GP) compensation to private equity fund performance. Using detailed information on limited partnership agreements between private equity limited and general partners, we find that “GP-friendly” contracts—agreements that pay general partners on a deal-by-deal basis instead of withholding carried interest until a benchmark return has been earned—are associated with higher returns, both gross and net of fees. This is robust to measures of performance persistence, time period effects, and other contract terms and is related to exit-timing incentives. Timing practices balance GP incentives against limited partner downside protection. article_type: original author: - first_name: Niklas full_name: Hüther, Niklas last_name: Hüther - first_name: David T. full_name: Robinson, David T. last_name: Robinson - first_name: Sönke full_name: Sievers, Sönke id: '46447' last_name: Sievers - first_name: Thomas full_name: Hartmann-Wendels, Thomas last_name: Hartmann-Wendels citation: ama: 'Hüther N, Robinson DT, Sievers S, Hartmann-Wendels T. Paying for Performance in Private Equity: Evidence from Venture Capital Partnerships. Management Science (VHB-JOURQUAL 3 Ranking A+). 2019;66(4):1756-1782. doi:10.1287/mnsc.2018.3274' apa: 'Hüther, N., Robinson, D. T., Sievers, S., & Hartmann-Wendels, T. (2019). Paying for Performance in Private Equity: Evidence from Venture Capital Partnerships. Management Science (VHB-JOURQUAL 3 Ranking A+), 66(4), 1756–1782. https://doi.org/10.1287/mnsc.2018.3274' bibtex: '@article{Hüther_Robinson_Sievers_Hartmann-Wendels_2019, title={Paying for Performance in Private Equity: Evidence from Venture Capital Partnerships}, volume={66}, DOI={10.1287/mnsc.2018.3274}, number={4}, journal={Management Science (VHB-JOURQUAL 3 Ranking A+)}, author={Hüther, Niklas and Robinson, David T. and Sievers, Sönke and Hartmann-Wendels, Thomas}, year={2019}, pages={1756–1782} }' chicago: 'Hüther, Niklas, David T. Robinson, Sönke Sievers, and Thomas Hartmann-Wendels. “Paying for Performance in Private Equity: Evidence from Venture Capital Partnerships.” Management Science (VHB-JOURQUAL 3 Ranking A+) 66, no. 4 (2019): 1756–82. https://doi.org/10.1287/mnsc.2018.3274.' ieee: 'N. Hüther, D. T. Robinson, S. Sievers, and T. Hartmann-Wendels, “Paying for Performance in Private Equity: Evidence from Venture Capital Partnerships,” Management Science (VHB-JOURQUAL 3 Ranking A+), vol. 66, no. 4, pp. 1756–1782, 2019.' mla: 'Hüther, Niklas, et al. “Paying for Performance in Private Equity: Evidence from Venture Capital Partnerships.” Management Science (VHB-JOURQUAL 3 Ranking A+), vol. 66, no. 4, 2019, pp. 1756–82, doi:10.1287/mnsc.2018.3274.' short: N. Hüther, D.T. Robinson, S. Sievers, T. Hartmann-Wendels, Management Science (VHB-JOURQUAL 3 Ranking A+) 66 (2019) 1756–1782. date_created: 2020-12-08T13:19:35Z date_updated: 2022-01-06T06:54:31Z department: - _id: '275' doi: 10.1287/mnsc.2018.3274 intvolume: ' 66' issue: '4' keyword: - venture capital - compensation - private equity - VC partnership - pay-performance relation language: - iso: eng main_file_link: - url: https://pubsonline.informs.org/doi/10.1287/mnsc.2018.3274 page: 1756-1782 publication: Management Science (VHB-JOURQUAL 3 Ranking A+) publication_identifier: issn: - 0025-1909 - 1526-5501 publication_status: published quality_controlled: '1' related_material: link: - relation: supplementary_material url: https://pubsonline.informs.org/doi/suppl/10.1287/mnsc.2018.3274/suppl_file/mnsc.2018.3274.sm1.pdf - relation: other url: https://corpgov.law.harvard.edu/2018/01/13/paying-for-performance-in-private-equity-evidence-from-vc-partnerships - relation: earlier_version url: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3087320 status: public title: 'Paying for Performance in Private Equity: Evidence from Venture Capital Partnerships' type: journal_article user_id: '46447' volume: 66 year: '2019' ... --- _id: '6512' abstract: - lang: eng text: Scheduling problems are essential for decision making in many academic disciplines, including operations management, computer science, and information systems. Since many scheduling problems are NP-hard in the strong sense, there is only limited research on exact algorithms and how their efficiency scales when implemented on parallel computing architectures. We address this gap by (1) adapting an exact branch-and-price algorithm to a parallel machine scheduling problem on unrelated machines with sequence- and machine-dependent setup times, (2) parallelizing the adapted algorithm by implementing a distributed-memory parallelization with a master/worker approach, and (3) conducting extensive computational experiments using up to 960 MPI processes on a modern high performance computing cluster. With our experiments, we show that the efficiency of our parallelization approach can lead to superlinear speedup but can vary substantially between instances. We further show that the wall time of serial execution can be substantially reduced through our parallelization, in some cases from 94 hours to less than six minutes when our algorithm is executed on 960 processes. author: - first_name: Gerhard full_name: Rauchecker, Gerhard last_name: Rauchecker - first_name: Guido full_name: Schryen, Guido id: '72850' last_name: Schryen citation: ama: 'Rauchecker G, Schryen G. Using High Performance Computing for Unrelated Parallel Machine Scheduling with Sequence-Dependent Setup Times: Development and Computational Evaluation of a Parallel Branch-and-Price Algorithm. Computers & Operations Research. 2019;(104):338-357.' apa: 'Rauchecker, G., & Schryen, G. (2019). Using High Performance Computing for Unrelated Parallel Machine Scheduling with Sequence-Dependent Setup Times: Development and Computational Evaluation of a Parallel Branch-and-Price Algorithm. Computers & Operations Research, (104), 338–357.' bibtex: '@article{Rauchecker_Schryen_2019, title={Using High Performance Computing for Unrelated Parallel Machine Scheduling with Sequence-Dependent Setup Times: Development and Computational Evaluation of a Parallel Branch-and-Price Algorithm}, number={104}, journal={Computers & Operations Research}, publisher={Elsevier}, author={Rauchecker, Gerhard and Schryen, Guido}, year={2019}, pages={338–357} }' chicago: 'Rauchecker, Gerhard, and Guido Schryen. “Using High Performance Computing for Unrelated Parallel Machine Scheduling with Sequence-Dependent Setup Times: Development and Computational Evaluation of a Parallel Branch-and-Price Algorithm.” Computers & Operations Research, no. 104 (2019): 338–57.' ieee: 'G. Rauchecker and G. Schryen, “Using High Performance Computing for Unrelated Parallel Machine Scheduling with Sequence-Dependent Setup Times: Development and Computational Evaluation of a Parallel Branch-and-Price Algorithm,” Computers & Operations Research, no. 104, pp. 338–357, 2019.' mla: 'Rauchecker, Gerhard, and Guido Schryen. “Using High Performance Computing for Unrelated Parallel Machine Scheduling with Sequence-Dependent Setup Times: Development and Computational Evaluation of a Parallel Branch-and-Price Algorithm.” Computers & Operations Research, no. 104, Elsevier, 2019, pp. 338–57.' short: G. Rauchecker, G. Schryen, Computers & Operations Research (2019) 338–357. date_created: 2019-01-08T13:50:44Z date_updated: 2022-01-06T07:03:08Z ddc: - '000' department: - _id: '277' file: - access_level: open_access content_type: application/pdf creator: hsiemes date_created: 2019-01-08T14:03:53Z date_updated: 2019-01-08T14:03:53Z file_id: '6513' file_name: cor-parallel-bp-for-upmsp.pdf file_size: 4153528 relation: main_file file_date_updated: 2019-01-08T14:03:53Z has_accepted_license: '1' issue: '104' keyword: - parallel machine scheduling with setup times - parallel branch-and-price algorithm - high performance computing - master/worker parallelization language: - iso: eng oa: '1' page: 338-357 publication: Computers & Operations Research publisher: Elsevier status: public title: 'Using High Performance Computing for Unrelated Parallel Machine Scheduling with Sequence-Dependent Setup Times: Development and Computational Evaluation of a Parallel Branch-and-Price Algorithm' type: journal_article user_id: '61579' year: '2019' ...