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Examining the Role of Ransomware Darknet Platforms in Building Trust Between Hackers and Victims","citation":{"chicago":"Hövel, Gilbert Georg, Tim Brinkmeier, and Simon Thanh-Nam Trang. “Trust Me If You Can! Examining the Role of Ransomware Darknet Platforms in Building Trust Between Hackers and Victims.” In <i>Proceedings of the International Conference on Information Systems 2025</i>, 2025.","ieee":"G. G. Hövel, T. Brinkmeier, and S. T.-N. Trang, “Trust Me If You Can! Examining the Role of Ransomware Darknet Platforms in Building Trust Between Hackers and Victims,” 2025.","ama":"Hövel GG, Brinkmeier T, Trang ST-N. Trust Me If You Can! Examining the Role of Ransomware Darknet Platforms in Building Trust Between Hackers and Victims. In: <i>Proceedings of the International Conference on Information Systems 2025</i>. ; 2025.","apa":"Hövel, G. G., Brinkmeier, T., &#38; Trang, S. T.-N. (2025). Trust Me If You Can! Examining the Role of Ransomware Darknet Platforms in Building Trust Between Hackers and Victims. <i>Proceedings of the International Conference on Information Systems 2025</i>.","bibtex":"@inproceedings{Hövel_Brinkmeier_Trang_2025, title={Trust Me If You Can! Examining the Role of Ransomware Darknet Platforms in Building Trust Between Hackers and Victims}, booktitle={Proceedings of the International Conference on Information Systems 2025}, author={Hövel, Gilbert Georg and Brinkmeier, Tim and Trang, Simon Thanh-Nam}, year={2025} }","short":"G.G. Hövel, T. Brinkmeier, S.T.-N. Trang, in: Proceedings of the International Conference on Information Systems 2025, 2025.","mla":"Hövel, Gilbert Georg, et al. “Trust Me If You Can! Examining the Role of Ransomware Darknet Platforms in Building Trust Between Hackers and Victims.” <i>Proceedings of the International Conference on Information Systems 2025</i>, 2025."},"year":"2025"},{"citation":{"ama":"Halimeh H, Freese F, Müller O. LLMs For Warm and Cold Next-Item Recommendation: A Comparative Study across Zero-Shot Prompting, In-Context Learning and Fine-Tuning. In: <i>International Conference on Information Systems Development</i>. University of Gdansk, Department of Business Informatics &#38; University of Belgrade, Faculty of Organizational Sciences; 2025. doi:<a href=\"https://doi.org/10.62036/isd.2025.68\">10.62036/isd.2025.68</a>","ieee":"H. Halimeh, F. Freese, and O. Müller, “LLMs For Warm and Cold Next-Item Recommendation: A Comparative Study across Zero-Shot Prompting, In-Context Learning and Fine-Tuning,” 2025, doi: <a href=\"https://doi.org/10.62036/isd.2025.68\">10.62036/isd.2025.68</a>.","chicago":"Halimeh, Haya, Florian Freese, and Oliver Müller. “LLMs For Warm and Cold Next-Item Recommendation: A Comparative Study across Zero-Shot Prompting, In-Context Learning and Fine-Tuning.” In <i>International Conference on Information Systems Development</i>. University of Gdansk, Department of Business Informatics &#38; University of Belgrade, Faculty of Organizational Sciences, 2025. <a href=\"https://doi.org/10.62036/isd.2025.68\">https://doi.org/10.62036/isd.2025.68</a>.","short":"H. Halimeh, F. Freese, O. Müller, in: International Conference on Information Systems Development, University of Gdansk, Department of Business Informatics &#38; University of Belgrade, Faculty of Organizational Sciences, 2025.","mla":"Halimeh, Haya, et al. “LLMs For Warm and Cold Next-Item Recommendation: A Comparative Study across Zero-Shot Prompting, In-Context Learning and Fine-Tuning.” <i>International Conference on Information Systems Development</i>, University of Gdansk, Department of Business Informatics &#38; University of Belgrade, Faculty of Organizational Sciences, 2025, doi:<a href=\"https://doi.org/10.62036/isd.2025.68\">10.62036/isd.2025.68</a>.","bibtex":"@inproceedings{Halimeh_Freese_Müller_2025, title={LLMs For Warm and Cold Next-Item Recommendation: A Comparative Study across Zero-Shot Prompting, In-Context Learning and Fine-Tuning}, DOI={<a href=\"https://doi.org/10.62036/isd.2025.68\">10.62036/isd.2025.68</a>}, booktitle={International Conference on Information Systems Development}, publisher={University of Gdansk, Department of Business Informatics &#38; University of Belgrade, Faculty of Organizational Sciences}, author={Halimeh, Haya and Freese, Florian and Müller, Oliver}, year={2025} }","apa":"Halimeh, H., Freese, F., &#38; Müller, O. (2025). LLMs For Warm and Cold Next-Item Recommendation: A Comparative Study across Zero-Shot Prompting, In-Context Learning and Fine-Tuning. <i>International Conference on Information Systems Development</i>. <a href=\"https://doi.org/10.62036/isd.2025.68\">https://doi.org/10.62036/isd.2025.68</a>"},"year":"2025","publication_status":"published","publication_identifier":{"issn":["2938-5202"]},"main_file_link":[{"open_access":"1"}],"doi":"10.62036/isd.2025.68","title":"LLMs For Warm and Cold Next-Item Recommendation: A Comparative Study across Zero-Shot Prompting, In-Context Learning and Fine-Tuning","author":[{"first_name":"Haya","full_name":"Halimeh, Haya","id":"87673","last_name":"Halimeh"},{"full_name":"Freese, Florian","last_name":"Freese","first_name":"Florian"},{"first_name":"Oliver","last_name":"Müller","full_name":"Müller, Oliver"}],"date_created":"2026-01-07T13:36:53Z","oa":"1","date_updated":"2026-01-07T13:47:43Z","publisher":"University of Gdansk, Department of Business Informatics & University of Belgrade, Faculty of Organizational Sciences","status":"public","abstract":[{"lang":"eng","text":"Recommendation systems are essential for delivering personalized content across e-commerce and streaming services. However, traditional methods often fail in cold-start scenarios where new items lack prior interactions. Recent advances in large language models (LLMs) offer a promising alternative. In this paper, we adopt the retrieve-and-recommend framework and propose to fine-tune the LLM jointly on warm-and cold-start next-item recommendation tasks, thus, mitigating the need for separate models for both item types. We computationally compare zero-shot prompting, in-context learning, and fine-tuning using the same LLM backbone, and benchmark them against strong PLM-based baselines. Our findings provide practical insights into the trade-offs between accuracy and computational cost of these methods for next-item recommendation. To enhance reproducibility, we release the source code under https://github. com/HayaHalimeh/LLMs-For-Next-Item-Recommendation.git."}],"type":"conference","publication":"International Conference on Information Systems Development","language":[{"iso":"eng"}],"user_id":"87673","department":[{"_id":"195"},{"_id":"196"}],"_id":"63524"},{"publication":"2025 27th International Conference on Business Informatics (CBI)","type":"conference","abstract":[{"text":"Data spaces have become a strategic pillar of Europe's digital agenda, enabling sovereign, legally compliant data sharing within decentralized ecosystems. As data space initiatives evolve, personalized recommendations are increasingly recognized as key use cases. However, traditional recommendation approaches typically rely on centralized aggregation of user behavior data-directly conflicting with the core ethos of data spaces: sovereignty, privacy, and trust. Federated recommendation systems offer a promising alternative by training models locally and exchanging only intermediate parameters to build a global model. Despite this potential, the integration of federated recommendation techniques and data space architectures remains largely underexplored in research and practice. This paper addresses this gap by designing and evaluating a prototype of a federated recommendation system specifically tailored for data spaces and compliant with their underlying infrastructure. Our findings highlight the viability of developing privacy-preserving, collaborative recommendation systems within data spaces, and contribute to the broader adoption of AI across these emerging ecosystems.","lang":"eng"}],"status":"public","_id":"63523","department":[{"_id":"195"},{"_id":"196"}],"user_id":"87673","language":[{"iso":"eng"}],"publication_status":"published","year":"2025","citation":{"bibtex":"@inproceedings{Halimeh_zur Heiden_2025, title={Preserving Sovereignty and Privacy for Personalization: Designing a Federated Recommendation System for Data Spaces}, DOI={<a href=\"https://doi.org/10.1109/cbi68102.2025.00019\">10.1109/cbi68102.2025.00019</a>}, booktitle={2025 27th International Conference on Business Informatics (CBI)}, publisher={IEEE}, author={Halimeh, Haya and zur Heiden, Philipp}, year={2025} }","mla":"Halimeh, Haya, and Philipp zur Heiden. “Preserving Sovereignty and Privacy for Personalization: Designing a Federated Recommendation System for Data Spaces.” <i>2025 27th International Conference on Business Informatics (CBI)</i>, IEEE, 2025, doi:<a href=\"https://doi.org/10.1109/cbi68102.2025.00019\">10.1109/cbi68102.2025.00019</a>.","short":"H. Halimeh, P. zur Heiden, in: 2025 27th International Conference on Business Informatics (CBI), IEEE, 2025.","apa":"Halimeh, H., &#38; zur Heiden, P. (2025). Preserving Sovereignty and Privacy for Personalization: Designing a Federated Recommendation System for Data Spaces. <i>2025 27th International Conference on Business Informatics (CBI)</i>. <a href=\"https://doi.org/10.1109/cbi68102.2025.00019\">https://doi.org/10.1109/cbi68102.2025.00019</a>","ama":"Halimeh H, zur Heiden P. Preserving Sovereignty and Privacy for Personalization: Designing a Federated Recommendation System for Data Spaces. In: <i>2025 27th International Conference on Business Informatics (CBI)</i>. IEEE; 2025. doi:<a href=\"https://doi.org/10.1109/cbi68102.2025.00019\">10.1109/cbi68102.2025.00019</a>","ieee":"H. Halimeh and P. zur Heiden, “Preserving Sovereignty and Privacy for Personalization: Designing a Federated Recommendation System for Data Spaces,” 2025, doi: <a href=\"https://doi.org/10.1109/cbi68102.2025.00019\">10.1109/cbi68102.2025.00019</a>.","chicago":"Halimeh, Haya, and Philipp zur Heiden. “Preserving Sovereignty and Privacy for Personalization: Designing a Federated Recommendation System for Data Spaces.” In <i>2025 27th International Conference on Business Informatics (CBI)</i>. IEEE, 2025. <a href=\"https://doi.org/10.1109/cbi68102.2025.00019\">https://doi.org/10.1109/cbi68102.2025.00019</a>."},"oa":"1","publisher":"IEEE","date_updated":"2026-01-07T13:49:45Z","author":[{"last_name":"Halimeh","full_name":"Halimeh, Haya","id":"87673","first_name":"Haya"},{"first_name":"Philipp","id":"64394","full_name":"zur Heiden, Philipp","last_name":"zur Heiden"}],"date_created":"2026-01-07T13:34:02Z","title":"Preserving Sovereignty and Privacy for Personalization: Designing a Federated Recommendation System for Data Spaces","doi":"10.1109/cbi68102.2025.00019","main_file_link":[{"open_access":"1"}]},{"status":"public","abstract":[{"lang":"eng","text":"Recommender systems (RS) can support sustainable development by steering users toward more sustainable choices. Sustainability-aware explanations represent one avenue for contributing to this goal by foregrounding the environmental and social aspects of the recommended products or services. This paper advances the line of research on sustainability-aware explanations by integrating nudging mechanisms into their design and by evaluating their effectiveness through a randomized between-subjects online vignette experiment across two item domains (). Our findings offer actionable design guidelines for building RS that foster sustainability-aware decision making and enrich the empirical foundation for impact-oriented research on explanation in RS.\r\n"}],"type":"conference","language":[{"iso":"eng"}],"department":[{"_id":"195"},{"_id":"196"}],"user_id":"87673","_id":"63525","citation":{"short":"H. Halimeh, O. Müller, in: 2025.","bibtex":"@inproceedings{Halimeh_Müller_2025, title={Towards Greener Choices: Decision Information Nudging for Sustainability-Aware Recommender Explanations}, DOI={<a href=\"https://doi.org/10.1007/978-3-032-13342-7\">10.1007/978-3-032-13342-7</a>}, author={Halimeh, Haya and Müller, Oliver}, year={2025} }","mla":"Halimeh, Haya, and Oliver Müller. <i>Towards Greener Choices: Decision Information Nudging for Sustainability-Aware Recommender Explanations</i>. 2025, doi:<a href=\"https://doi.org/10.1007/978-3-032-13342-7\">10.1007/978-3-032-13342-7</a>.","apa":"Halimeh, H., &#38; Müller, O. (2025). <i>Towards Greener Choices: Decision Information Nudging for Sustainability-Aware Recommender Explanations</i>.  The Second International Workshop on Recommender Systems for Sustainability and Social Good, RecSoGood 2025, Prague, Czech Republic. <a href=\"https://doi.org/10.1007/978-3-032-13342-7\">https://doi.org/10.1007/978-3-032-13342-7</a>","ama":"Halimeh H, Müller O. Towards Greener Choices: Decision Information Nudging for Sustainability-Aware Recommender Explanations. In: ; 2025. doi:<a href=\"https://doi.org/10.1007/978-3-032-13342-7\">10.1007/978-3-032-13342-7</a>","chicago":"Halimeh, Haya, and Oliver Müller. “Towards Greener Choices: Decision Information Nudging for Sustainability-Aware Recommender Explanations,” 2025. <a href=\"https://doi.org/10.1007/978-3-032-13342-7\">https://doi.org/10.1007/978-3-032-13342-7</a>.","ieee":"H. Halimeh and O. Müller, “Towards Greener Choices: Decision Information Nudging for Sustainability-Aware Recommender Explanations,” presented at the  The Second International Workshop on Recommender Systems for Sustainability and Social Good, RecSoGood 2025, Prague, Czech Republic, 2025, doi: <a href=\"https://doi.org/10.1007/978-3-032-13342-7\">10.1007/978-3-032-13342-7</a>."},"year":"2025","conference":{"location":"Prague, Czech Republic","name":" The Second International Workshop on Recommender Systems for Sustainability and Social Good, RecSoGood 2025","start_date":"2025-09-26"},"doi":"10.1007/978-3-032-13342-7","main_file_link":[{"open_access":"1","url":"https://link.springer.com/book/10.1007/978-3-032-13342-7"}],"title":"Towards Greener Choices: Decision Information Nudging for Sustainability-Aware Recommender Explanations","date_created":"2026-01-07T13:40:05Z","author":[{"first_name":"Haya","last_name":"Halimeh","full_name":"Halimeh, Haya","id":"87673"},{"first_name":"Oliver","last_name":"Müller","id":"72849","full_name":"Müller, Oliver"}],"oa":"1","date_updated":"2026-01-07T13:46:50Z"},{"citation":{"mla":"Althaus, Maike, et al. <i>Positionspapier Use Case 1: Vernetzte Kulturplattformen</i>. 2025.","bibtex":"@book{Althaus_Beverungen_Flath_Halimeh_Hansmeier_zur Heiden_Kundisch_Müller_Müller_Oberthür_et al._2025, place={Universität Paderborn, SICP}, title={Positionspapier Use Case 1: Vernetzte Kulturplattformen}, author={Althaus, Maike and Beverungen, Daniel and Flath, Beate and Halimeh, Haya and Hansmeier, Philipp and zur Heiden, Philipp and Kundisch, Dennis and Müller, Michelle and Müller, Oliver and Oberthür, Simon and et al.}, year={2025} }","short":"M. Althaus, D. Beverungen, B. Flath, H. Halimeh, P. Hansmeier, P. zur Heiden, D. Kundisch, M. Müller, O. Müller, S. Oberthür, C. Vorbohle, M. Momen Pour Tafreshi, S. Mauß, A. Mücke, J. Müller, M. Peter, A. Schmitt-Chandon, K. Sellerberg, M. Steinhäuser, Positionspapier Use Case 1: Vernetzte Kulturplattformen, Universität Paderborn, SICP, 2025.","apa":"Althaus, M., Beverungen, D., Flath, B., Halimeh, H., Hansmeier, P., zur Heiden, P., Kundisch, D., Müller, M., Müller, O., Oberthür, S., Vorbohle, C., Momen Pour Tafreshi, M., Mauß, S., Mücke, A., Müller, J., Peter, M., Schmitt-Chandon, A., Sellerberg, K., &#38; Steinhäuser, M. (2025). <i>Positionspapier Use Case 1: Vernetzte Kulturplattformen</i>.","ama":"Althaus M, Beverungen D, Flath B, et al. <i>Positionspapier Use Case 1: Vernetzte Kulturplattformen</i>.; 2025.","chicago":"Althaus, Maike, Daniel Beverungen, Beate Flath, Haya Halimeh, Philipp Hansmeier, Philipp zur Heiden, Dennis Kundisch, et al. <i>Positionspapier Use Case 1: Vernetzte Kulturplattformen</i>. Universität Paderborn, SICP, 2025.","ieee":"M. Althaus <i>et al.</i>, <i>Positionspapier Use Case 1: Vernetzte Kulturplattformen</i>. Universität Paderborn, SICP, 2025."},"place":"Universität Paderborn, SICP","year":"2025","publication_status":"published","title":"Positionspapier Use Case 1: Vernetzte Kulturplattformen","author":[{"id":"61896","full_name":"Althaus, Maike","last_name":"Althaus","first_name":"Maike"},{"first_name":"Daniel","full_name":"Beverungen, Daniel","id":"59677","last_name":"Beverungen"},{"first_name":"Beate","last_name":"Flath","orcid":"https://orcid.org/0000-0002-1648-0796","full_name":"Flath, Beate","id":"58896"},{"id":"87673","full_name":"Halimeh, Haya","last_name":"Halimeh","first_name":"Haya"},{"first_name":"Philipp","last_name":"Hansmeier","full_name":"Hansmeier, Philipp","id":"55603"},{"first_name":"Philipp","last_name":"zur Heiden","full_name":"zur Heiden, Philipp","id":"64394"},{"first_name":"Dennis","last_name":"Kundisch","id":"21117","full_name":"Kundisch, Dennis"},{"first_name":"Michelle","last_name":"Müller","id":"50286","full_name":"Müller, Michelle"},{"full_name":"Müller, Oliver","id":"72849","last_name":"Müller","first_name":"Oliver"},{"last_name":"Oberthür","full_name":"Oberthür, Simon","id":"383","first_name":"Simon"},{"first_name":"Christian","last_name":"Vorbohle","id":"29951","full_name":"Vorbohle, Christian"},{"first_name":"Maryam","full_name":"Momen Pour Tafreshi, Maryam","last_name":"Momen Pour Tafreshi"},{"last_name":"Mauß","full_name":"Mauß, Sebastian","first_name":"Sebastian"},{"first_name":"Alina","last_name":"Mücke","full_name":"Mücke, Alina"},{"full_name":"Müller, Jörg","last_name":"Müller","first_name":"Jörg"},{"first_name":"Malte","full_name":"Peter, Malte","last_name":"Peter"},{"full_name":"Schmitt-Chandon, Ariane","last_name":"Schmitt-Chandon","first_name":"Ariane"},{"full_name":"Sellerberg, Kerstin","last_name":"Sellerberg","first_name":"Kerstin"},{"last_name":"Steinhäuser","full_name":"Steinhäuser, Moritz","first_name":"Moritz"}],"date_created":"2025-12-10T15:50:35Z","date_updated":"2026-01-07T13:41:32Z","status":"public","type":"working_paper","language":[{"iso":"ger"}],"user_id":"87673","department":[{"_id":"276"},{"_id":"526"},{"_id":"196"},{"_id":"735"}],"project":[{"_id":"160","name":"DatenraumKultur: Use Case 1 - Kulturplattformen - Datenraum Kultur"}],"_id":"63026"},{"publication_status":"published","citation":{"ama":"Chen A, Hieber P, Sureth-Sloane C. <i>How Much to Pay for Tax Certainty? The Role of Advance Tax Rulings for Risky Investment under Loss Offset and Tax Uncertainty</i>.; 2025. doi:<a href=\"https://doi.org/10.1007/s10797-025-09930-8\">10.1007/s10797-025-09930-8</a>","chicago":"Chen, An, Peter Hieber, and Caren Sureth-Sloane. <i>How Much to Pay for Tax Certainty? The Role of Advance Tax Rulings for Risky Investment under Loss Offset and Tax Uncertainty</i>, 2025. <a href=\"https://doi.org/10.1007/s10797-025-09930-8\">https://doi.org/10.1007/s10797-025-09930-8</a>.","ieee":"A. Chen, P. Hieber, and C. Sureth-Sloane, <i>How Much to Pay for Tax Certainty? The Role of Advance Tax Rulings for Risky Investment under Loss Offset and Tax Uncertainty</i>. 2025.","mla":"Chen, An, et al. <i>How Much to Pay for Tax Certainty? The Role of Advance Tax Rulings for Risky Investment under Loss Offset and Tax Uncertainty</i>. 2025, doi:<a href=\"https://doi.org/10.1007/s10797-025-09930-8\">10.1007/s10797-025-09930-8</a>.","short":"A. Chen, P. Hieber, C. Sureth-Sloane, How Much to Pay for Tax Certainty? The Role of Advance Tax Rulings for Risky Investment under Loss Offset and Tax Uncertainty, 2025.","bibtex":"@book{Chen_Hieber_Sureth-Sloane_2025, title={How Much to Pay for Tax Certainty? The Role of Advance Tax Rulings for Risky Investment under Loss Offset and Tax Uncertainty}, DOI={<a href=\"https://doi.org/10.1007/s10797-025-09930-8\">10.1007/s10797-025-09930-8</a>}, author={Chen, An and Hieber, Peter and Sureth-Sloane, Caren}, year={2025} }","apa":"Chen, A., Hieber, P., &#38; Sureth-Sloane, C. (2025). <i>How Much to Pay for Tax Certainty? The Role of Advance Tax Rulings for Risky Investment under Loss Offset and Tax Uncertainty</i>. <a href=\"https://doi.org/10.1007/s10797-025-09930-8\">https://doi.org/10.1007/s10797-025-09930-8</a>"},"jel":["G11","H25","M41","M42","M48"],"year":"2025","author":[{"first_name":"An","full_name":"Chen, An","last_name":"Chen"},{"first_name":"Peter","full_name":"Hieber, Peter","last_name":"Hieber"},{"first_name":"Caren","orcid":" 0000-0002-8183-5901","last_name":"Sureth-Sloane","id":"530","full_name":"Sureth-Sloane, Caren"}],"date_created":"2023-07-13T12:03:15Z","date_updated":"2026-01-12T12:24:11Z","oa":"1","doi":"10.1007/s10797-025-09930-8","main_file_link":[{"url":"https://doi.org/10.1007/s10797-025-09930-8","open_access":"1"}],"title":"How Much to Pay for Tax Certainty? The Role of Advance Tax Rulings for Risky Investment under Loss Offset and Tax Uncertainty","type":"working_paper","status":"public","abstract":[{"lang":"eng","text":"This study examines the impact of tax certainty through advance tax rulings (ATRs) on firms' risky investments under cash flow and tax uncertainty. Both firms and governments have expressed growing concern about increasing tax uncertainty, due to frequent tax reforms and the difficulty in applying ambiguous tax laws and anticipating audit outcomes. One remedy is the provision of ATRs, which offer upfront clarification of tax issues to reduce tax uncertainty and increase risk-taking. We analyze how these uncertainties, along with different tax rates, loss offset provisions, and ATR fees affect investment strategies. Our results suggest, first, that ATRs encourage riskier investments, particularly in tax regimes with generous loss offsets. We identify optimal ranges of ATR fees that benefit firms and tax authorities. Second, we show that it may be beneficial to design ATRs with a low or negative fee. Third, our study reveals a U-shaped relationship between firms' risk aversion and their willingness to pay for tax certainty, with willingness being higher for firms at low or high levels of risk aversion. In contrast, moderately risk-averse firms are only willing to accept low fees. Overall, our results highlight the importance of low-cost tax certainty combined with generous loss offset provisions to encourage risky investments."}],"department":[{"_id":"187"}],"user_id":"96670","_id":"46047","language":[{"iso":"eng"}]},{"conference":{"name":"Jahrestagung der Sektion Berufs- und Wirtschaftspädagogik der Deutschen Gesellschaft für Erziehungswissenschaft","start_date":"2025-09-24","end_date":"2025-09-26","location":"Darmstadt"},"title":"Evaluation von Entwicklungsarbeiten zur modulübergreifenden Professionalisierung von Lehrkräften an Berufskollegs im Kontext der digitalen Transformation","author":[{"first_name":"Niklas","full_name":"Sänger, Niklas","id":"49812","orcid":"https://orcid.org/0009-0007-2292-9063","last_name":"Sänger"},{"last_name":"Schmid","orcid":"0009-0005-8378-4385","full_name":"Schmid, Leonie","id":"57331","first_name":"Leonie"},{"orcid":" https://orcid.org/0000-0001-9262-5646","last_name":"Jenert","full_name":"Jenert, Tobias","id":"71994","first_name":"Tobias"},{"first_name":"H.-Hugo","last_name":"Kremer","full_name":"Kremer, H.-Hugo","id":"15280"},{"first_name":"Marie-Ann","full_name":"Kückmann, Marie-Ann","id":"25394","last_name":"Kückmann"}],"date_created":"2025-12-04T13:26:01Z","date_updated":"2026-03-19T08:53:20Z","citation":{"mla":"Sänger, Niklas, et al. <i>Evaluation von Entwicklungsarbeiten zur modulübergreifenden Professionalisierung von Lehrkräften an Berufskollegs im Kontext der digitalen Transformation</i>. 2025.","bibtex":"@inproceedings{Sänger_Schmid_Jenert_Kremer_Kückmann_2025, title={Evaluation von Entwicklungsarbeiten zur modulübergreifenden Professionalisierung von Lehrkräften an Berufskollegs im Kontext der digitalen Transformation}, author={Sänger, Niklas and Schmid, Leonie and Jenert, Tobias and Kremer, H.-Hugo and Kückmann, Marie-Ann}, year={2025} }","short":"N. Sänger, L. Schmid, T. Jenert, H.-H. Kremer, M.-A. Kückmann, in: 2025.","apa":"Sänger, N., Schmid, L., Jenert, T., Kremer, H.-H., &#38; Kückmann, M.-A. (2025). <i>Evaluation von Entwicklungsarbeiten zur modulübergreifenden Professionalisierung von Lehrkräften an Berufskollegs im Kontext der digitalen Transformation</i>. Jahrestagung der Sektion Berufs- und Wirtschaftspädagogik der Deutschen Gesellschaft für Erziehungswissenschaft, Darmstadt.","ama":"Sänger N, Schmid L, Jenert T, Kremer H-H, Kückmann M-A. Evaluation von Entwicklungsarbeiten zur modulübergreifenden Professionalisierung von Lehrkräften an Berufskollegs im Kontext der digitalen Transformation. In: ; 2025.","chicago":"Sänger, Niklas, Leonie Schmid, Tobias Jenert, H.-Hugo Kremer, and Marie-Ann Kückmann. “Evaluation von Entwicklungsarbeiten zur modulübergreifenden Professionalisierung von Lehrkräften an Berufskollegs im Kontext der digitalen Transformation,” 2025.","ieee":"N. Sänger, L. Schmid, T. Jenert, H.-H. Kremer, and M.-A. Kückmann, “Evaluation von Entwicklungsarbeiten zur modulübergreifenden Professionalisierung von Lehrkräften an Berufskollegs im Kontext der digitalen Transformation,” presented at the Jahrestagung der Sektion Berufs- und Wirtschaftspädagogik der Deutschen Gesellschaft für Erziehungswissenschaft, Darmstadt, 2025."},"year":"2025","quality_controlled":"1","language":[{"iso":"ger"}],"department":[{"_id":"208"},{"_id":"282"},{"_id":"640"}],"user_id":"57331","_id":"62877","project":[{"_id":"865","name":"WÖRLD - Wirtschaftspädagogik und Ökonomische Bildung: Lehrkräftebildung und Unterricht digital"}],"status":"public","type":"conference"},{"citation":{"short":"L. Wiredu, Junior Management Science 10 (2025) 985–1008.","mla":"Wiredu, Laura. “Who Bears the Costs of the UK Soft Drink Tax? An Empirical Study of Medium-Term Effects.” <i>Junior Management Science</i>, vol. 10, no. 4, 2025, pp. 985–1008, doi:<a href=\"https://doi.org/10.582/jums/v10i4pp985-1008\">10.582/jums/v10i4pp985-1008</a>.","bibtex":"@article{Wiredu_2025, title={Who Bears the Costs of the UK Soft Drink Tax? An Empirical Study of Medium-Term Effects}, volume={10}, DOI={<a href=\"https://doi.org/10.582/jums/v10i4pp985-1008\">10.582/jums/v10i4pp985-1008</a>}, number={4}, journal={Junior Management Science}, author={Wiredu, Laura}, year={2025}, pages={985–1008} }","apa":"Wiredu, L. (2025). Who Bears the Costs of the UK Soft Drink Tax? An Empirical Study of Medium-Term Effects. <i>Junior Management Science</i>, <i>10</i>(4), 985–1008. <a href=\"https://doi.org/10.582/jums/v10i4pp985-1008\">https://doi.org/10.582/jums/v10i4pp985-1008</a>","ieee":"L. Wiredu, “Who Bears the Costs of the UK Soft Drink Tax? An Empirical Study of Medium-Term Effects,” <i>Junior Management Science</i>, vol. 10, no. 4, pp. 985–1008, 2025, doi: <a href=\"https://doi.org/10.582/jums/v10i4pp985-1008\">10.582/jums/v10i4pp985-1008</a>.","chicago":"Wiredu, Laura. “Who Bears the Costs of the UK Soft Drink Tax? An Empirical Study of Medium-Term Effects.” <i>Junior Management Science</i> 10, no. 4 (2025): 985–1008. <a href=\"https://doi.org/10.582/jums/v10i4pp985-1008\">https://doi.org/10.582/jums/v10i4pp985-1008</a>.","ama":"Wiredu L. Who Bears the Costs of the UK Soft Drink Tax? An Empirical Study of Medium-Term Effects. <i>Junior Management Science</i>. 2025;10(4):985-1008. doi:<a href=\"https://doi.org/10.582/jums/v10i4pp985-1008\">10.582/jums/v10i4pp985-1008</a>"},"intvolume":"        10","page":"985-1008","year":"2025","issue":"4","quality_controlled":"1","doi":"10.582/jums/v10i4pp985-1008","title":"Who Bears the Costs of the UK Soft Drink Tax? An Empirical Study of Medium-Term Effects","author":[{"first_name":"Laura","last_name":"Wiredu","full_name":"Wiredu, Laura","id":"69559"}],"date_created":"2026-01-05T13:40:30Z","volume":10,"date_updated":"2026-03-19T10:17:07Z","status":"public","type":"journal_article","publication":"Junior Management Science","language":[{"iso":"eng"}],"user_id":"96670","department":[{"_id":"187"}],"_id":"63470"},{"title":"“I don’t believe that you believe what I believe”: an experiment on misperceptions of social norms and whistleblowing","doi":"10.1016/j.euroecorev.2025.105189","publisher":"Elsevier BV","date_updated":"2026-03-27T16:06:34Z","volume":180,"author":[{"first_name":"Behnud","id":"26032","full_name":"Mir Djawadi, Behnud","last_name":"Mir Djawadi","orcid":"0000-0002-6271-5912"},{"first_name":"Sabrina","full_name":"Plaß, Sabrina","id":"34502","last_name":"Plaß"},{"last_name":"Loer","full_name":"Loer, Sabrina","id":"38794","first_name":"Sabrina"}],"date_created":"2026-02-06T13:49:41Z","year":"2025","intvolume":"       180","citation":{"ama":"Mir Djawadi B, Plaß S, Loer S. “I don’t believe that you believe what I believe”: an experiment on misperceptions of social norms and whistleblowing. <i>European Economic Review</i>. 2025;180. doi:<a href=\"https://doi.org/10.1016/j.euroecorev.2025.105189\">10.1016/j.euroecorev.2025.105189</a>","chicago":"Mir Djawadi, Behnud, Sabrina Plaß, and Sabrina Loer. “‘I Don’t Believe That You Believe What I Believe’: An Experiment on Misperceptions of Social Norms and Whistleblowing.” <i>European Economic Review</i> 180 (2025). <a href=\"https://doi.org/10.1016/j.euroecorev.2025.105189\">https://doi.org/10.1016/j.euroecorev.2025.105189</a>.","ieee":"B. Mir Djawadi, S. Plaß, and S. Loer, “‘I don’t believe that you believe what I believe’: an experiment on misperceptions of social norms and whistleblowing,” <i>European Economic Review</i>, vol. 180, Art. no. 105189, 2025, doi: <a href=\"https://doi.org/10.1016/j.euroecorev.2025.105189\">10.1016/j.euroecorev.2025.105189</a>.","mla":"Mir Djawadi, Behnud, et al. “‘I Don’t Believe That You Believe What I Believe’: An Experiment on Misperceptions of Social Norms and Whistleblowing.” <i>European Economic Review</i>, vol. 180, 105189, Elsevier BV, 2025, doi:<a href=\"https://doi.org/10.1016/j.euroecorev.2025.105189\">10.1016/j.euroecorev.2025.105189</a>.","short":"B. Mir Djawadi, S. Plaß, S. 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(2025). “I don’t believe that you believe what I believe”: an experiment on misperceptions of social norms and whistleblowing. <i>European Economic Review</i>, <i>180</i>, Article 105189. <a href=\"https://doi.org/10.1016/j.euroecorev.2025.105189\">https://doi.org/10.1016/j.euroecorev.2025.105189</a>"},"publication_identifier":{"issn":["0014-2921"]},"publication_status":"published","article_number":"105189","language":[{"iso":"eng"}],"_id":"63908","department":[{"_id":"179"}],"user_id":"26032","status":"public","publication":"European Economic Review","type":"journal_article"},{"_id":"63911","user_id":"26032","department":[{"_id":"179"}],"language":[{"iso":"eng"}],"type":"journal_article","publication":"SSRN Electronic Journal","status":"public","date_updated":"2026-03-27T21:51:21Z","publisher":"Elsevier BV","author":[{"first_name":"Behnud","last_name":"Mir Djawadi","orcid":"0000-0002-6271-5912","full_name":"Mir Djawadi, Behnud","id":"26032"},{"first_name":"Sabrina","full_name":"Plaß, Sabrina","id":"34502","last_name":"Plaß"},{"first_name":"Sabrina","last_name":"Loer","full_name":"Loer, Sabrina","id":"38794"}],"date_created":"2026-02-06T13:54:00Z","title":"Social Information Interventions under Competing Norms: Evidence from a Whistleblowing Experiment","doi":"http://dx.doi.org/10.2139/ssrn.5345248","publication_status":"published","year":"2025","citation":{"apa":"Mir Djawadi, B., Plaß, S., &#38; Loer, S. 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Loer, SSRN Electronic Journal (2025).","mla":"Mir Djawadi, Behnud, et al. “Social Information Interventions under Competing Norms: Evidence from a Whistleblowing Experiment.” <i>SSRN Electronic Journal</i>, Elsevier BV, 2025, doi:<a href=\"http://dx.doi.org/10.2139/ssrn.5345248\">http://dx.doi.org/10.2139/ssrn.5345248</a>.","ieee":"B. Mir Djawadi, S. Plaß, and S. Loer, “Social Information Interventions under Competing Norms: Evidence from a Whistleblowing Experiment,” <i>SSRN Electronic Journal</i>, 2025, doi: <a href=\"http://dx.doi.org/10.2139/ssrn.5345248\">http://dx.doi.org/10.2139/ssrn.5345248</a>.","chicago":"Mir Djawadi, Behnud, Sabrina Plaß, and Sabrina Loer. “Social Information Interventions under Competing Norms: Evidence from a Whistleblowing Experiment.” <i>SSRN Electronic Journal</i>, 2025. <a href=\"http://dx.doi.org/10.2139/ssrn.5345248\">http://dx.doi.org/10.2139/ssrn.5345248</a>."}},{"publication_status":"published","citation":{"ama":"Mir Djawadi B, Wester L. Social Interaction and Feedback-Giving Behavior in the Sharing Economy - An Experimental Analysis. <i>SSRN Electronic Journal</i>. Published online 2025. doi:<a href=\"https://dx.doi.org/10.2139/ssrn.5345248\">https://dx.doi.org/10.2139/ssrn.5345248</a>","ieee":"B. Mir Djawadi and L. Wester, “Social Interaction and Feedback-Giving Behavior in the Sharing Economy - An Experimental Analysis,” <i>SSRN Electronic Journal</i>, 2025, doi: <a href=\"https://dx.doi.org/10.2139/ssrn.5345248\">https://dx.doi.org/10.2139/ssrn.5345248</a>.","chicago":"Mir Djawadi, Behnud, and Lisa Wester. “Social Interaction and Feedback-Giving Behavior in the Sharing Economy - An Experimental Analysis.” <i>SSRN Electronic Journal</i>, 2025. <a href=\"https://dx.doi.org/10.2139/ssrn.5345248\">https://dx.doi.org/10.2139/ssrn.5345248</a>.","short":"B. Mir Djawadi, L. Wester, SSRN Electronic Journal (2025).","mla":"Mir Djawadi, Behnud, and Lisa Wester. “Social Interaction and Feedback-Giving Behavior in the Sharing Economy - An Experimental Analysis.” <i>SSRN Electronic Journal</i>, Elsevier BV, 2025, doi:<a href=\"https://dx.doi.org/10.2139/ssrn.5345248\">https://dx.doi.org/10.2139/ssrn.5345248</a>.","bibtex":"@article{Mir Djawadi_Wester_2025, title={Social Interaction and Feedback-Giving Behavior in the Sharing Economy - An Experimental Analysis}, DOI={<a href=\"https://dx.doi.org/10.2139/ssrn.5345248\">https://dx.doi.org/10.2139/ssrn.5345248</a>}, journal={SSRN Electronic Journal}, publisher={Elsevier BV}, author={Mir Djawadi, Behnud and Wester, Lisa}, year={2025} }","apa":"Mir Djawadi, B., &#38; Wester, L. (2025). Social Interaction and Feedback-Giving Behavior in the Sharing Economy - An Experimental Analysis. <i>SSRN Electronic Journal</i>. <a href=\"https://dx.doi.org/10.2139/ssrn.5345248\">https://dx.doi.org/10.2139/ssrn.5345248</a>"},"year":"2025","date_created":"2026-02-06T13:54:45Z","author":[{"first_name":"Behnud","full_name":"Mir Djawadi, Behnud","id":"26032","last_name":"Mir Djawadi","orcid":"0000-0002-6271-5912"},{"first_name":"Lisa","last_name":"Wester","full_name":"Wester, Lisa"}],"date_updated":"2026-03-28T10:14:10Z","publisher":"Elsevier BV","doi":"https://dx.doi.org/10.2139/ssrn.5345248","title":"Social Interaction and Feedback-Giving Behavior in the Sharing Economy - An Experimental Analysis","publication":"SSRN Electronic Journal","type":"journal_article","status":"public","department":[{"_id":"179"}],"user_id":"26032","_id":"63912","language":[{"iso":"eng"}]},{"oa":"1","date_updated":"2026-04-02T04:32:13Z","author":[{"id":"83557","full_name":"Hemmrich, Simon","last_name":"Hemmrich","first_name":"Simon"},{"last_name":"Nissen","full_name":"Nissen, Volker","first_name":"Volker"},{"first_name":"Daniel","last_name":"Beverungen","full_name":"Beverungen, Daniel","id":"59677"},{"last_name":"Pauls","full_name":"Pauls, Josias Daniel Miño","first_name":"Josias Daniel Miño"}],"volume":23,"main_file_link":[{"url":"https://link.springer.com/epdf/10.1007/s10257-025-00702-9?sharing_token=fOiWqZx_ScKFAKjxu5UqWPe4RwlQNchNByi7wbcMAY6mjxpZFPB3OtpVT0rAZf9eEBt3_qXIVcZ67l3R9JVYasmuCsIimzE-xfP0N5Rimun248j0jFOnL1eBu4rypKSDFnbmR3kJ5xx-HLnCXvPvQPwpm09qOkS9GSNsiG-du60%3D","open_access":"1"}],"doi":"https://doi.org/10.1007/s10257-025-00702-9","publication_status":"published","has_accepted_license":"1","jel":["D81","D82","L86","L10","M30"],"citation":{"chicago":"Hemmrich, Simon, Volker Nissen, Daniel Beverungen, and Josias Daniel Miño Pauls. “Blockchain‑based Reputation Systemsfor Business‑to‑business Services: Designing a Reputation Mechanism to Reduce Information Asymmetry in Professional Consulting.” <i>Information Systems and E-Business Management</i> 23, no. 1 (2025). <a href=\"https://doi.org/10.1007/s10257-025-00702-9\">https://doi.org/10.1007/s10257-025-00702-9</a>.","ieee":"S. Hemmrich, V. Nissen, D. Beverungen, and J. D. M. Pauls, “Blockchain‑based reputation systemsfor business‑to‑business services: designing a reputation mechanism to reduce information asymmetry in professional consulting,” <i>Information Systems and e-Business Management</i>, vol. 23, no. 1, 2025, doi: <a href=\"https://doi.org/10.1007/s10257-025-00702-9\">https://doi.org/10.1007/s10257-025-00702-9</a>.","ama":"Hemmrich S, Nissen V, Beverungen D, Pauls JDM. Blockchain‑based reputation systemsfor business‑to‑business services: designing a reputation mechanism to reduce information asymmetry in professional consulting. <i>Information Systems and e-Business Management</i>. 2025;23(1). doi:<a href=\"https://doi.org/10.1007/s10257-025-00702-9\">https://doi.org/10.1007/s10257-025-00702-9</a>","apa":"Hemmrich, S., Nissen, V., Beverungen, D., &#38; Pauls, J. D. M. (2025). Blockchain‑based reputation systemsfor business‑to‑business services: designing a reputation mechanism to reduce information asymmetry in professional consulting. <i>Information Systems and E-Business Management</i>, <i>23</i>(1). <a href=\"https://doi.org/10.1007/s10257-025-00702-9\">https://doi.org/10.1007/s10257-025-00702-9</a>","bibtex":"@article{Hemmrich_Nissen_Beverungen_Pauls_2025, title={Blockchain‑based reputation systemsfor business‑to‑business services: designing a reputation mechanism to reduce information asymmetry in professional consulting}, volume={23}, DOI={<a href=\"https://doi.org/10.1007/s10257-025-00702-9\">https://doi.org/10.1007/s10257-025-00702-9</a>}, number={1}, journal={Information Systems and e-Business Management}, publisher={Springer}, author={Hemmrich, Simon and Nissen, Volker and Beverungen, Daniel and Pauls, Josias Daniel Miño}, year={2025} }","mla":"Hemmrich, Simon, et al. “Blockchain‑based Reputation Systemsfor Business‑to‑business Services: Designing a Reputation Mechanism to Reduce Information Asymmetry in Professional Consulting.” <i>Information Systems and E-Business Management</i>, vol. 23, no. 1, Springer, 2025, doi:<a href=\"https://doi.org/10.1007/s10257-025-00702-9\">https://doi.org/10.1007/s10257-025-00702-9</a>.","short":"S. Hemmrich, V. Nissen, D. Beverungen, J.D.M. Pauls, Information Systems and E-Business Management 23 (2025)."},"intvolume":"        23","_id":"60050","user_id":"83557","department":[{"_id":"195"}],"article_type":"original","file_date_updated":"2025-05-28T08:05:18Z","type":"journal_article","status":"public","publisher":"Springer","date_created":"2025-05-28T08:12:28Z","title":"Blockchain‑based reputation systemsfor business‑to‑business services: designing a reputation mechanism to reduce information asymmetry in professional consulting","quality_controlled":"1","issue":"1","year":"2025","external_id":{"unknown":["https://doi.org/10.1007/s10257-025-00702-9"]},"ddc":["000"],"keyword":["Information asymmetry","Trust","Reputation system","Monetary rating","Blockchain","Consulting"],"language":[{"iso":"eng"}],"publication":"Information Systems and e-Business Management","abstract":[{"lang":"eng","text":"Reputation systems to rate companies’ performances remain largely unexplored inresearch and are scarcely used in business-to-business (B2B) practice. Such systemsare essential for businesses seeking trustworthy partners, as they help reduce infor-mation asymmetry, lower buyers’ transaction risks, and allow high-quality serviceproviders to justify premium pricing. Unlike traditional review-based systems in thebusiness-to-consumer (B2C) context, we propose a B2B reputation mechanism inwhich buyers commit to a rating payment before a transaction. Once the buyer final-izes the rating, this payment is executed and recorded on a blockchain as an immu-table, secure ledger. Our system mimics natural trust-building mechanisms with rat-ings that are (1) monetary-based, (2) stake-based, (3) non-aggregated, (4) involvecounter-ratings, (5) selectively sellable, (6) individually comparable, (7) stored ona blockchain, (8) and monitored by a third instance. This system provides a novelapproach to fostering trust in B2B transactions by reducing information asymme-try and transaction risk. We illustrate the mechanism’s application in the consultingsector. Our analysis has identified 23 institutional trust and distrust dimensions thatpromote establishing institutional trust through the proposed mechanism. Qualita-tive interviews suggest that, while complex and challenging to apply, this mecha-nism can foster trust in B2B transactions. Given the low maturity in the applicationdomain—rating professional business services with business reputation systems—and solution domain—using monetary stakes for ratings, this system stands as apotential invention."}],"file":[{"date_updated":"2025-05-28T08:05:18Z","creator":"hemmrich","date_created":"2025-05-28T08:05:18Z","file_size":1440251,"file_name":"Hemmrich_et_al-2025-Information_Systems_and_e-Business_Management.pdf","access_level":"closed","file_id":"60051","content_type":"application/pdf","success":1,"relation":"main_file"}]}]