[{"date_updated":"2025-09-11T09:50:14Z","author":[{"orcid":"0000-0001-6714-8729","last_name":"Qudus","full_name":"Qudus, Umair","id":"83392","first_name":"Umair"},{"first_name":"Muhammad","full_name":"Saleem, Muhammad","last_name":"Saleem"},{"last_name":"Ngonga Ngomo","id":"65716","full_name":"Ngonga Ngomo, Axel-Cyrille","first_name":"Axel-Cyrille"},{"full_name":"Lee, Young-Koo","last_name":"Lee","first_name":"Young-Koo"}],"volume":12,"doi":"10.3233/SW-200420","publication_status":"accepted","has_accepted_license":"1","publication_identifier":{"issn":["2210-4968"]},"citation":{"ieee":"U. Qudus, M. Saleem, A.-C. Ngonga Ngomo, and Y.-K. Lee, “An Empirical Evaluation of Cost-based Federated SPARQL Query Processing Engines,” <i>Semantic Web</i>, vol. 12, no. 6, pp. 843–868, doi: <a href=\"https://doi.org/10.3233/SW-200420\">10.3233/SW-200420</a>.","chicago":"Qudus, Umair, Muhammad Saleem, Axel-Cyrille Ngonga Ngomo, and Young-Koo Lee. “An Empirical Evaluation of Cost-Based Federated SPARQL Query Processing Engines.” <i>Semantic Web</i> 12, no. 6 (n.d.): 843–68. <a href=\"https://doi.org/10.3233/SW-200420\">https://doi.org/10.3233/SW-200420</a>.","ama":"Qudus U, Saleem M, Ngonga Ngomo A-C, Lee Y-K. An Empirical Evaluation of Cost-based Federated SPARQL Query Processing Engines. <i>Semantic Web</i>. 12(6):843-868. doi:<a href=\"https://doi.org/10.3233/SW-200420\">10.3233/SW-200420</a>","apa":"Qudus, U., Saleem, M., Ngonga Ngomo, A.-C., &#38; Lee, Y.-K. (n.d.). An Empirical Evaluation of Cost-based Federated SPARQL Query Processing Engines. <i>Semantic Web</i>, <i>12</i>(6), 843–868. <a href=\"https://doi.org/10.3233/SW-200420\">https://doi.org/10.3233/SW-200420</a>","bibtex":"@article{Qudus_Saleem_Ngonga Ngomo_Lee, title={An Empirical Evaluation of Cost-based Federated SPARQL Query Processing Engines}, volume={12}, DOI={<a href=\"https://doi.org/10.3233/SW-200420\">10.3233/SW-200420</a>}, number={6}, journal={Semantic Web}, publisher={ISO Press}, author={Qudus, Umair and Saleem, Muhammad and Ngonga Ngomo, Axel-Cyrille and Lee, Young-Koo}, pages={843–868} }","mla":"Qudus, Umair, et al. “An Empirical Evaluation of Cost-Based Federated SPARQL Query Processing Engines.” <i>Semantic Web</i>, vol. 12, no. 6, ISO Press, pp. 843–68, doi:<a href=\"https://doi.org/10.3233/SW-200420\">10.3233/SW-200420</a>.","short":"U. Qudus, M. Saleem, A.-C. Ngonga Ngomo, Y.-K. Lee, Semantic Web 12 (n.d.) 843–868."},"intvolume":"        12","page":"843-868","project":[{"_id":"410","name":"KnowGraphs: KnowGraphs: Knowledge Graphs at Scale"}],"_id":"25212","user_id":"83392","department":[{"_id":"574"}],"article_type":"original","file_date_updated":"2024-01-13T11:35:53Z","type":"journal_article","status":"public","publisher":"ISO Press","date_created":"2021-10-01T06:52:52Z","title":"An Empirical Evaluation of Cost-based Federated SPARQL Query Processing Engines","issue":"6","year":"2021","ddc":["000"],"keyword":["SPARQL","benchmarking","cost-based","cost-free","federated","querying"],"language":[{"iso":"eng"}],"publication":"Semantic Web","abstract":[{"text":"Finding a good query plan is key to the optimization of query runtime. This holds in particular for cost-based federation\r\nengines, which make use of cardinality estimations to achieve this goal. A number of studies compare SPARQL federation engines across different performance metrics, including query runtime, result set completeness and correctness, number of sources selected and number of requests sent. Albeit informative, these metrics are generic and unable to quantify and evaluate the accuracy of the cardinality estimators of cost-based federation engines. To thoroughly evaluate cost-based federation engines, the effect of estimated cardinality errors on the overall query runtime performance must be measured. In this paper, we address this challenge by presenting novel evaluation metrics targeted at a fine-grained benchmarking of cost-based federated SPARQL query engines. We evaluate five cost-based federated SPARQL query engines using existing as well as novel evaluation metrics by using LargeRDFBench queries. Our results provide a detailed analysis of the experimental outcomes that reveal novel insights, useful for the development of future cost-based federated SPARQL query processing engines.","lang":"eng"}],"file":[{"relation":"main_file","success":1,"content_type":"application/pdf","access_level":"closed","file_id":"50483","file_name":"swj2604.pdf","file_size":978478,"creator":"uqudus","date_created":"2024-01-13T11:35:53Z","date_updated":"2024-01-13T11:35:53Z"}]},{"language":[{"iso":"eng"}],"_id":"54587","department":[{"_id":"574"}],"user_id":"77309","abstract":[{"lang":"eng","text":"<jats:p>With significant growth in RDF datasets, application developers demand online availability of these datasets to meet the end users’ expectations. Various interfaces are available for querying RDF data using SPARQL query language. Studies show that SPARQL end-points may provide high query runtime performance at the cost of low availability. For example, it has been observed that only 32.2% of public endpoints have a monthly uptime of 99–100%. One possible reason for this low availability is the high workload experienced by these SPARQL endpoints. As complete query execution is performed at server side (i.e., SPARQL endpoint), this high query processing workload may result in performance degradation or even a service shutdown. We performed extensive experiments to show the query processing capabilities of well-known triple stores by using their SPARQL endpoints. In particular, we stressed these triple stores with multiple parallel requests from different querying agents. Our experiments revealed the maximum query processing capabilities of these triple stores after which point they lead to service shutdowns. We hope this analysis will help triple store developers to design workload-aware RDF engines to improve the availability of their public endpoints with high throughput.</jats:p>"}],"status":"public","publication":"Studies on the Semantic Web","type":"book_chapter","title":"When is the Peak Performance Reached? An Analysis of RDF Triple Stores","doi":"10.3233/ssw210042","publisher":"IOS Press","date_updated":"2025-09-11T11:39:47Z","author":[{"full_name":"Khan, Hashim","id":"76510","last_name":"Khan","orcid":"0009-0006-5953-480X","first_name":"Hashim"},{"orcid":"https://orcid.org/0000-0001-8403-5160","last_name":"Manzoor","full_name":"Manzoor, Ali","id":"77309","first_name":"Ali"},{"last_name":"Ngonga Ngomo","id":"65716","full_name":"Ngonga Ngomo, Axel-Cyrille","first_name":"Axel-Cyrille"},{"first_name":"Muhammad","full_name":"Saleem, Muhammad","last_name":"Saleem"}],"date_created":"2024-06-04T12:25:53Z","year":"2021","citation":{"apa":"Khan, H., Manzoor, A., Ngonga Ngomo, A.-C., &#38; Saleem, M. (2021). When is the Peak Performance Reached? An Analysis of RDF Triple Stores. In <i>Studies on the Semantic Web</i>. IOS Press. <a href=\"https://doi.org/10.3233/ssw210042\">https://doi.org/10.3233/ssw210042</a>","bibtex":"@inbook{Khan_Manzoor_Ngonga Ngomo_Saleem_2021, title={When is the Peak Performance Reached? An Analysis of RDF Triple Stores}, DOI={<a href=\"https://doi.org/10.3233/ssw210042\">10.3233/ssw210042</a>}, booktitle={Studies on the Semantic Web}, publisher={IOS Press}, author={Khan, Hashim and Manzoor, Ali and Ngonga Ngomo, Axel-Cyrille and Saleem, Muhammad}, year={2021} }","short":"H. Khan, A. Manzoor, A.-C. Ngonga Ngomo, M. Saleem, in: Studies on the Semantic Web, IOS Press, 2021.","mla":"Khan, Hashim, et al. “When Is the Peak Performance Reached? An Analysis of RDF Triple Stores.” <i>Studies on the Semantic Web</i>, IOS Press, 2021, doi:<a href=\"https://doi.org/10.3233/ssw210042\">10.3233/ssw210042</a>.","ama":"Khan H, Manzoor A, Ngonga Ngomo A-C, Saleem M. When is the Peak Performance Reached? An Analysis of RDF Triple Stores. In: <i>Studies on the Semantic Web</i>. IOS Press; 2021. doi:<a href=\"https://doi.org/10.3233/ssw210042\">10.3233/ssw210042</a>","ieee":"H. Khan, A. Manzoor, A.-C. Ngonga Ngomo, and M. Saleem, “When is the Peak Performance Reached? An Analysis of RDF Triple Stores,” in <i>Studies on the Semantic Web</i>, IOS Press, 2021.","chicago":"Khan, Hashim, Ali Manzoor, Axel-Cyrille Ngonga Ngomo, and Muhammad Saleem. “When Is the Peak Performance Reached? An Analysis of RDF Triple Stores.” In <i>Studies on the Semantic Web</i>. IOS Press, 2021. <a href=\"https://doi.org/10.3233/ssw210042\">https://doi.org/10.3233/ssw210042</a>."},"publication_identifier":{"issn":["1868-1158","2215-0870"]},"publication_status":"published"},{"has_accepted_license":"1","corporate_editor":["The Aerosol Society"],"citation":{"short":"J. Ludwig, C. Kykal, H.-J. Schmid, in: The Aerosol Society (Ed.), Book of Abstracts for the 2021 European Aerosol Conference, 2021.","bibtex":"@inproceedings{Ludwig_Kykal_Schmid_2021, title={Assessing spreading and removal of virus laden aerosols in different settings using an aerosol method (oral presentation)}, booktitle={Book of abstracts for the 2021 European Aerosol Conference}, author={Ludwig, Janis and Kykal, Carsten and Schmid, Hans-Joachim}, editor={The Aerosol Society}, year={2021} }","mla":"Ludwig, Janis, et al. “Assessing Spreading and Removal of Virus Laden Aerosols in Different Settings Using an Aerosol Method (Oral Presentation).” <i>Book of Abstracts for the 2021 European Aerosol Conference</i>, edited by The Aerosol Society, 2021.","apa":"Ludwig, J., Kykal, C., &#38; Schmid, H.-J. (2021). Assessing spreading and removal of virus laden aerosols in different settings using an aerosol method (oral presentation). In The Aerosol Society (Ed.), <i>Book of abstracts for the 2021 European Aerosol Conference</i>.","chicago":"Ludwig, Janis, Carsten Kykal, and Hans-Joachim Schmid. “Assessing Spreading and Removal of Virus Laden Aerosols in Different Settings Using an Aerosol Method (Oral Presentation).” In <i>Book of Abstracts for the 2021 European Aerosol Conference</i>, edited by The Aerosol Society, 2021.","ieee":"J. Ludwig, C. Kykal, and H.-J. Schmid, “Assessing spreading and removal of virus laden aerosols in different settings using an aerosol method (oral presentation),” in <i>Book of abstracts for the 2021 European Aerosol Conference</i>, 2021.","ama":"Ludwig J, Kykal C, Schmid H-J. Assessing spreading and removal of virus laden aerosols in different settings using an aerosol method (oral presentation). In: The Aerosol Society, ed. <i>Book of Abstracts for the 2021 European Aerosol Conference</i>. ; 2021."},"year":"2021","author":[{"last_name":"Ludwig","orcid":"0009-0001-1348-496X","full_name":"Ludwig, Janis","id":"45788","first_name":"Janis"},{"first_name":"Carsten","full_name":"Kykal, Carsten","last_name":"Kykal"},{"first_name":"Hans-Joachim","full_name":"Schmid, Hans-Joachim","id":"464","last_name":"Schmid","orcid":"000-0001-8590-1921"}],"date_created":"2021-11-18T10:53:35Z","date_updated":"2025-09-18T08:45:49Z","conference":{"end_date":"2021-09-03","start_date":"2021-08-30","name":"European Aerosol Conference"},"title":"Assessing spreading and removal of virus laden aerosols in different settings using an aerosol method (oral presentation)","publication":"Book of abstracts for the 2021 European Aerosol Conference","type":"conference_abstract","status":"public","file":[{"date_updated":"2021-11-18T10:52:58Z","creator":"jludwig","date_created":"2021-11-18T10:52:58Z","file_size":160577,"file_id":"27552","access_level":"closed","file_name":"abstract_EAC2021_UPB.pdf","content_type":"application/pdf","success":1,"relation":"main_file"}],"department":[{"_id":"150"},{"_id":"9"}],"user_id":"45788","_id":"27551","language":[{"iso":"eng"}],"file_date_updated":"2021-11-18T10:52:58Z","keyword":["aerosol spreading","SARS-CoV-2","indoor air filtration"],"ddc":["660"]},{"issue":"3","publication_identifier":{"issn":["0960-085X","1476-9344"]},"publication_status":"published","intvolume":"        31","page":"410-435","citation":{"ama":"Giermindl LM, Strich F, Christ O, Leicht-Deobald U, Redzepi A. The dark sides of people analytics: reviewing the perils for organisations and employees. <i>European Journal of Information Systems</i>. 2021;31(3):410-435. doi:<a href=\"https://doi.org/10.1080/0960085x.2021.1927213\">10.1080/0960085x.2021.1927213</a>","ieee":"L. M. Giermindl, F. Strich, O. Christ, U. Leicht-Deobald, and A. Redzepi, “The dark sides of people analytics: reviewing the perils for organisations and employees,” <i>European Journal of Information Systems</i>, vol. 31, no. 3, pp. 410–435, 2021, doi: <a href=\"https://doi.org/10.1080/0960085x.2021.1927213\">10.1080/0960085x.2021.1927213</a>.","chicago":"Giermindl, Lisa Marie, Franz Strich, Oliver Christ, Ulrich Leicht-Deobald, and Abdullah Redzepi. “The Dark Sides of People Analytics: Reviewing the Perils for Organisations and Employees.” <i>European Journal of Information Systems</i> 31, no. 3 (2021): 410–35. <a href=\"https://doi.org/10.1080/0960085x.2021.1927213\">https://doi.org/10.1080/0960085x.2021.1927213</a>.","apa":"Giermindl, L. M., Strich, F., Christ, O., Leicht-Deobald, U., &#38; Redzepi, A. (2021). The dark sides of people analytics: reviewing the perils for organisations and employees. <i>European Journal of Information Systems</i>, <i>31</i>(3), 410–435. <a href=\"https://doi.org/10.1080/0960085x.2021.1927213\">https://doi.org/10.1080/0960085x.2021.1927213</a>","short":"L.M. Giermindl, F. Strich, O. Christ, U. Leicht-Deobald, A. Redzepi, European Journal of Information Systems 31 (2021) 410–435.","bibtex":"@article{Giermindl_Strich_Christ_Leicht-Deobald_Redzepi_2021, title={The dark sides of people analytics: reviewing the perils for organisations and employees}, volume={31}, DOI={<a href=\"https://doi.org/10.1080/0960085x.2021.1927213\">10.1080/0960085x.2021.1927213</a>}, number={3}, journal={European Journal of Information Systems}, publisher={Informa UK Limited}, author={Giermindl, Lisa Marie and Strich, Franz and Christ, Oliver and Leicht-Deobald, Ulrich and Redzepi, Abdullah}, year={2021}, pages={410–435} }","mla":"Giermindl, Lisa Marie, et al. “The Dark Sides of People Analytics: Reviewing the Perils for Organisations and Employees.” <i>European Journal of Information Systems</i>, vol. 31, no. 3, Informa UK Limited, 2021, pp. 410–35, doi:<a href=\"https://doi.org/10.1080/0960085x.2021.1927213\">10.1080/0960085x.2021.1927213</a>."},"year":"2021","volume":31,"date_created":"2025-10-13T11:33:10Z","author":[{"first_name":"Lisa Marie","full_name":"Giermindl, Lisa Marie","last_name":"Giermindl"},{"last_name":"Strich","orcid":"0000-0002-0170-9025","full_name":"Strich, Franz","id":"122631","first_name":"Franz"},{"first_name":"Oliver","last_name":"Christ","full_name":"Christ, Oliver"},{"last_name":"Leicht-Deobald","full_name":"Leicht-Deobald, Ulrich","first_name":"Ulrich"},{"full_name":"Redzepi, Abdullah","last_name":"Redzepi","first_name":"Abdullah"}],"publisher":"Informa UK Limited","date_updated":"2025-10-15T10:39:01Z","doi":"10.1080/0960085x.2021.1927213","title":"The dark sides of people analytics: reviewing the perils for organisations and employees","publication":"European Journal of Information Systems","type":"journal_article","status":"public","user_id":"122631","_id":"61802","extern":"1","language":[{"iso":"eng"}]},{"date_updated":"2025-10-21T11:30:30Z","publisher":"Universität Osnabrück","date_created":"2025-10-21T11:21:43Z","author":[{"first_name":"Isabell","last_name":"Diekmann","id":"119325","full_name":"Diekmann, Isabell"},{"full_name":"Greschner, Deniz","last_name":"Greschner","first_name":"Deniz"},{"full_name":"von der Heyde, Judith","last_name":"von der Heyde","first_name":"Judith"},{"last_name":"Logeswaran","full_name":"Logeswaran, Araththy","first_name":"Araththy"},{"last_name":"Reinhardt","full_name":"Reinhardt, Anna C.","first_name":"Anna C."},{"first_name":"Sonja A.","full_name":"Strube, Sonja A.","last_name":"Strube"}],"volume":2021,"title":"Perspektiven auf Ungleichheit und Ungleichwertigkeit im Kontext Sozialer Arbeit. Eine Einleitung","publication_identifier":{"isbn":["978-3-9820349-4-2"]},"issue":"1","year":"2021","citation":{"ama":"Diekmann I, Greschner D, von der Heyde J, Logeswaran A, Reinhardt AC, Strube SA. Perspektiven auf Ungleichheit und Ungleichwertigkeit im Kontext Sozialer Arbeit. Eine Einleitung. <i>Perspektiven Soziale Arbeit in der Migrationsgesellschaft und muslimische Wohlfahrtspflege</i>. 2021;2021(1):7 – 10.","chicago":"Diekmann, Isabell, Deniz Greschner, Judith von der Heyde, Araththy Logeswaran, Anna C. Reinhardt, and Sonja A. Strube. “Perspektiven Auf Ungleichheit Und Ungleichwertigkeit Im Kontext Sozialer Arbeit. Eine Einleitung.” <i>Perspektiven. Soziale Arbeit in Der Migrationsgesellschaft Und Muslimische Wohlfahrtspflege</i> 2021, no. 1 (2021): 7 – 10.","ieee":"I. Diekmann, D. Greschner, J. von der Heyde, A. Logeswaran, A. C. Reinhardt, and S. A. Strube, “Perspektiven auf Ungleichheit und Ungleichwertigkeit im Kontext Sozialer Arbeit. Eine Einleitung,” <i>Perspektiven. Soziale Arbeit in der Migrationsgesellschaft und muslimische Wohlfahrtspflege</i>, vol. 2021, no. 1, pp. 7 – 10, 2021.","short":"I. Diekmann, D. Greschner, J. von der Heyde, A. Logeswaran, A.C. Reinhardt, S.A. Strube, Perspektiven. Soziale Arbeit in Der Migrationsgesellschaft Und Muslimische Wohlfahrtspflege 2021 (2021) 7 – 10.","bibtex":"@article{Diekmann_Greschner_von der Heyde_Logeswaran_Reinhardt_Strube_2021, title={Perspektiven auf Ungleichheit und Ungleichwertigkeit im Kontext Sozialer Arbeit. Eine Einleitung}, volume={2021}, number={1}, journal={Perspektiven. Soziale Arbeit in der Migrationsgesellschaft und muslimische Wohlfahrtspflege}, publisher={Universität Osnabrück}, author={Diekmann, Isabell and Greschner, Deniz and von der Heyde, Judith and Logeswaran, Araththy and Reinhardt, Anna C. and Strube, Sonja A.}, year={2021}, pages={7 – 10} }","mla":"Diekmann, Isabell, et al. “Perspektiven Auf Ungleichheit Und Ungleichwertigkeit Im Kontext Sozialer Arbeit. Eine Einleitung.” <i>Perspektiven. Soziale Arbeit in Der Migrationsgesellschaft Und Muslimische Wohlfahrtspflege</i>, vol. 2021, no. 1, Universität Osnabrück, 2021, pp. 7 – 10.","apa":"Diekmann, I., Greschner, D., von der Heyde, J., Logeswaran, A., Reinhardt, A. C., &#38; Strube, S. A. (2021). Perspektiven auf Ungleichheit und Ungleichwertigkeit im Kontext Sozialer Arbeit. Eine Einleitung. <i>Perspektiven. Soziale Arbeit in Der Migrationsgesellschaft Und Muslimische Wohlfahrtspflege</i>, <i>2021</i>(1), 7 – 10."},"page":"7 – 10","intvolume":"      2021","_id":"61913","user_id":"119325","language":[{"iso":"eng"}],"extern":"1","type":"journal_article","publication":"Perspektiven. Soziale Arbeit in der Migrationsgesellschaft und muslimische Wohlfahrtspflege","status":"public"},{"year":"2021","citation":{"apa":"Diekmann, I. (2021). Differenzierung von Islam- und Muslim*innenfeindlichkeit – Potenziale für die Praxis. <i>Perspektiven. Soziale Arbeit in Der Migrationsgesellschaft Und Muslimische Wohlfahrtspflege </i>, <i>2021</i>(1), 77 – 89.","mla":"Diekmann, Isabell. “Differenzierung von Islam- Und Muslim*innenfeindlichkeit – Potenziale Für Die Praxis.” <i>Perspektiven. Soziale Arbeit in Der Migrationsgesellschaft Und Muslimische Wohlfahrtspflege </i>, vol. 2021, no. 1, Universität Osnabrück, 2021, pp. 77 – 89.","short":"I. Diekmann, Perspektiven. Soziale Arbeit in Der Migrationsgesellschaft Und Muslimische Wohlfahrtspflege  2021 (2021) 77 – 89.","bibtex":"@article{Diekmann_2021, title={Differenzierung von Islam- und Muslim*innenfeindlichkeit – Potenziale für die Praxis}, volume={2021}, number={1}, journal={Perspektiven. Soziale Arbeit in der Migrationsgesellschaft und muslimische Wohlfahrtspflege }, publisher={Universität Osnabrück}, author={Diekmann, Isabell}, year={2021}, pages={77 – 89} }","ama":"Diekmann I. Differenzierung von Islam- und Muslim*innenfeindlichkeit – Potenziale für die Praxis. <i>Perspektiven Soziale Arbeit in der Migrationsgesellschaft und muslimische Wohlfahrtspflege </i>. 2021;2021(1):77 – 89.","chicago":"Diekmann, Isabell. “Differenzierung von Islam- Und Muslim*innenfeindlichkeit – Potenziale Für Die Praxis.” <i>Perspektiven. Soziale Arbeit in Der Migrationsgesellschaft Und Muslimische Wohlfahrtspflege </i> 2021, no. 1 (2021): 77 – 89.","ieee":"I. Diekmann, “Differenzierung von Islam- und Muslim*innenfeindlichkeit – Potenziale für die Praxis,” <i>Perspektiven. Soziale Arbeit in der Migrationsgesellschaft und muslimische Wohlfahrtspflege </i>, vol. 2021, no. 1, pp. 77 – 89, 2021."},"page":"77 – 89","intvolume":"      2021","publication_identifier":{"isbn":["978-3-9820349-4-2"]},"issue":"1","title":"Differenzierung von Islam- und Muslim*innenfeindlichkeit – Potenziale für die Praxis","publisher":"Universität Osnabrück","date_updated":"2025-10-21T11:29:49Z","author":[{"first_name":"Isabell","last_name":"Diekmann","id":"119325","full_name":"Diekmann, Isabell"}],"date_created":"2025-10-21T11:21:44Z","volume":2021,"status":"public","type":"journal_article","publication":"Perspektiven. Soziale Arbeit in der Migrationsgesellschaft und muslimische Wohlfahrtspflege ","language":[{"iso":"eng"}],"extern":"1","_id":"61914","user_id":"119325"},{"publication_status":"published","publication_identifier":{"issn":["0733-8724","1558-2213"]},"citation":{"apa":"Fang, D., Zazzi, A., Müller, J., Dray, D., Fullner, C., Marin-Palomo, P., Tabatabaei Mashayekh, A., Dipta Das, A., Weizel, M., Gudyriev, S., Freude, W., Randel, S., Scheytt, J. C., Witzens, J., &#38; Koos, C. (2021). Optical Arbitrary Waveform Measurement Using Silicon Photonic Slicing Filters. <i>Journal of Lightwave Technology</i>, 1–1. <a href=\"https://doi.org/10.1109/jlt.2021.3130764\">https://doi.org/10.1109/jlt.2021.3130764</a>","bibtex":"@article{Fang_Zazzi_Müller_Dray_Fullner_Marin-Palomo_Tabatabaei Mashayekh_Dipta Das_Weizel_Gudyriev_et al._2021, title={Optical Arbitrary Waveform Measurement Using Silicon Photonic Slicing Filters}, DOI={<a href=\"https://doi.org/10.1109/jlt.2021.3130764\">10.1109/jlt.2021.3130764</a>}, journal={Journal of Lightwave Technology}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Fang, Dengyang and Zazzi, Andrea and Müller, Juliana and Dray, Daniel and Fullner, Christoph and Marin-Palomo, Pablo and Tabatabaei Mashayekh, Alireza and Dipta Das, Arka and Weizel, Maxim and Gudyriev, Sergiy and et al.}, year={2021}, pages={1–1} }","short":"D. Fang, A. Zazzi, J. Müller, D. Dray, C. Fullner, P. Marin-Palomo, A. Tabatabaei Mashayekh, A. Dipta Das, M. Weizel, S. Gudyriev, W. Freude, S. Randel, J.C. Scheytt, J. Witzens, C. Koos, Journal of Lightwave Technology (2021) 1–1.","mla":"Fang, Dengyang, et al. “Optical Arbitrary Waveform Measurement Using Silicon Photonic Slicing Filters.” <i>Journal of Lightwave Technology</i>, Institute of Electrical and Electronics Engineers (IEEE), 2021, pp. 1–1, doi:<a href=\"https://doi.org/10.1109/jlt.2021.3130764\">10.1109/jlt.2021.3130764</a>.","ama":"Fang D, Zazzi A, Müller J, et al. Optical Arbitrary Waveform Measurement Using Silicon Photonic Slicing Filters. <i>Journal of Lightwave Technology</i>. Published online 2021:1-1. doi:<a href=\"https://doi.org/10.1109/jlt.2021.3130764\">10.1109/jlt.2021.3130764</a>","chicago":"Fang, Dengyang, Andrea Zazzi, Juliana Müller, Daniel Dray, Christoph Fullner, Pablo Marin-Palomo, Alireza Tabatabaei Mashayekh, et al. “Optical Arbitrary Waveform Measurement Using Silicon Photonic Slicing Filters.” <i>Journal of Lightwave Technology</i>, 2021, 1–1. <a href=\"https://doi.org/10.1109/jlt.2021.3130764\">https://doi.org/10.1109/jlt.2021.3130764</a>.","ieee":"D. Fang <i>et al.</i>, “Optical Arbitrary Waveform Measurement Using Silicon Photonic Slicing Filters,” <i>Journal of Lightwave Technology</i>, pp. 1–1, 2021, doi: <a href=\"https://doi.org/10.1109/jlt.2021.3130764\">10.1109/jlt.2021.3130764</a>."},"page":"1-1","year":"2021","author":[{"last_name":"Fang","full_name":"Fang, Dengyang","first_name":"Dengyang"},{"last_name":"Zazzi","full_name":"Zazzi, Andrea","first_name":"Andrea"},{"last_name":"Müller","full_name":"Müller, Juliana","first_name":"Juliana"},{"first_name":"Daniel","last_name":"Dray","full_name":"Dray, Daniel"},{"first_name":"Christoph","full_name":"Fullner, Christoph","last_name":"Fullner"},{"first_name":"Pablo","full_name":"Marin-Palomo, Pablo","last_name":"Marin-Palomo"},{"last_name":"Tabatabaei Mashayekh","full_name":"Tabatabaei Mashayekh, Alireza","first_name":"Alireza"},{"first_name":"Arka","last_name":"Dipta Das","full_name":"Dipta Das, Arka"},{"first_name":"Maxim","id":"44271","full_name":"Weizel, Maxim","last_name":"Weizel","orcid":"https://orcid.org/0000-0003-2699-9839"},{"last_name":"Gudyriev","full_name":"Gudyriev, Sergiy","first_name":"Sergiy"},{"full_name":"Freude, Wolfgang","last_name":"Freude","first_name":"Wolfgang"},{"last_name":"Randel","full_name":"Randel, Sebastian","first_name":"Sebastian"},{"first_name":"J. Christoph","last_name":"Scheytt","orcid":"https://orcid.org/0000-0002-5950-6618","full_name":"Scheytt, J. Christoph","id":"37144"},{"first_name":"Jeremy","last_name":"Witzens","full_name":"Witzens, Jeremy"},{"first_name":"Christian","full_name":"Koos, Christian","last_name":"Koos"}],"date_created":"2022-01-10T13:43:46Z","publisher":"Institute of Electrical and Electronics Engineers (IEEE)","date_updated":"2025-10-30T09:14:55Z","doi":"10.1109/jlt.2021.3130764","title":"Optical Arbitrary Waveform Measurement Using Silicon Photonic Slicing Filters","type":"journal_article","publication":"Journal of Lightwave Technology","status":"public","abstract":[{"lang":"eng","text":"We demonstrate an optical arbitrary waveform measurement (OAWM) system that exploits a bank of silicon photonic (SiP) frequency-tunable coupled-resonator optical waveguide (CROW) filters for gapless spectral slicing of broadband optical signals. The spectral slices are coherently detected using a frequency comb as a multi-wavelength local oscillator (LO) and stitched together by digital signal processing (DSP). For high-quality signal reconstruction, we have implemented a maximum-ratio combining (MRC) technique based on precise calibration of the complex-valued opto-electronic transfer functions of all detection paths. In a proof-of-concept experiment, we demonstrate the viability of the scheme by implementing a four-channel system that offers an overall detection bandwidth of 140 GHz. Exploiting a femtosecond laser with precisely known pulse shape for calibration along with dynamic amplitude and phase estimation, we reconstruct 100 GBd QPSK, 16QAM and 64QAM optical data signals. The reconstructed signals show improved quality compared to that obtained with a single high-speed intradyne receiver, while the electronic bandwidth requirements of the individual coherent receivers are greatly reduced."}],"user_id":"44271","department":[{"_id":"58"},{"_id":"230"}],"project":[{"name":"SPP 2111; TP: Ultrabreitbandiger Photonisch-Elektronischer Analog-Digital-Wandler (PACE) - Phase 2","_id":"303"}],"_id":"29209","language":[{"iso":"eng"}],"keyword":["Atomic and Molecular Physics","and Optics"]},{"title":"Optically Enabled ADCs and Application to Optical Communications","doi":"10.1109/ojsscs.2021.3110943","publisher":"Institute of Electrical and Electronics Engineers (IEEE)","date_updated":"2025-10-30T09:14:19Z","volume":1,"author":[{"first_name":"Andrea","last_name":"Zazzi","full_name":"Zazzi, Andrea"},{"first_name":"Juliana","full_name":"Müller, Juliana","last_name":"Müller"},{"id":"44271","full_name":"Weizel, Maxim","orcid":"https://orcid.org/0000-0003-2699-9839","last_name":"Weizel","first_name":"Maxim"},{"last_name":"Koch","full_name":"Koch, Jonas","first_name":"Jonas"},{"last_name":"Fang","full_name":"Fang, Dengyang","first_name":"Dengyang"},{"last_name":"Moscoso-Martir","full_name":"Moscoso-Martir, Alvaro","first_name":"Alvaro"},{"full_name":"Tabatabaei Mashayekh, Ali","last_name":"Tabatabaei Mashayekh","first_name":"Ali"},{"full_name":"Das, Arka D.","last_name":"Das","first_name":"Arka D."},{"first_name":"Daniel","last_name":"Drays","full_name":"Drays, Daniel"},{"first_name":"Florian","full_name":"Merget, Florian","last_name":"Merget"},{"full_name":"Kartner, Franz X.","last_name":"Kartner","first_name":"Franz X."},{"first_name":"Stephan","full_name":"Pachnicke, Stephan","last_name":"Pachnicke"},{"first_name":"Christian","last_name":"Koos","full_name":"Koos, Christian"},{"orcid":"https://orcid.org/0000-0002-5950-6618","last_name":"Scheytt","id":"37144","full_name":"Scheytt, J. Christoph","first_name":"J. Christoph"},{"full_name":"Witzens, Jeremy","last_name":"Witzens","first_name":"Jeremy"}],"date_created":"2022-01-10T13:57:36Z","year":"2021","intvolume":"         1","page":"209-221","citation":{"short":"A. Zazzi, J. Müller, M. Weizel, J. Koch, D. Fang, A. Moscoso-Martir, A. Tabatabaei Mashayekh, A.D. Das, D. Drays, F. Merget, F.X. Kartner, S. Pachnicke, C. Koos, J.C. Scheytt, J. Witzens, IEEE Open Journal of the Solid-State Circuits Society 1 (2021) 209–221.","mla":"Zazzi, Andrea, et al. “Optically Enabled ADCs and Application to Optical Communications.” <i>IEEE Open Journal of the Solid-State Circuits Society</i>, vol. 1, Institute of Electrical and Electronics Engineers (IEEE), 2021, pp. 209–21, doi:<a href=\"https://doi.org/10.1109/ojsscs.2021.3110943\">10.1109/ojsscs.2021.3110943</a>.","bibtex":"@article{Zazzi_Müller_Weizel_Koch_Fang_Moscoso-Martir_Tabatabaei Mashayekh_Das_Drays_Merget_et al._2021, title={Optically Enabled ADCs and Application to Optical Communications}, volume={1}, DOI={<a href=\"https://doi.org/10.1109/ojsscs.2021.3110943\">10.1109/ojsscs.2021.3110943</a>}, journal={IEEE Open Journal of the Solid-State Circuits Society}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Zazzi, Andrea and Müller, Juliana and Weizel, Maxim and Koch, Jonas and Fang, Dengyang and Moscoso-Martir, Alvaro and Tabatabaei Mashayekh, Ali and Das, Arka D. and Drays, Daniel and Merget, Florian and et al.}, year={2021}, pages={209–221} }","apa":"Zazzi, A., Müller, J., Weizel, M., Koch, J., Fang, D., Moscoso-Martir, A., Tabatabaei Mashayekh, A., Das, A. D., Drays, D., Merget, F., Kartner, F. X., Pachnicke, S., Koos, C., Scheytt, J. C., &#38; Witzens, J. (2021). Optically Enabled ADCs and Application to Optical Communications. <i>IEEE Open Journal of the Solid-State Circuits Society</i>, <i>1</i>, 209–221. <a href=\"https://doi.org/10.1109/ojsscs.2021.3110943\">https://doi.org/10.1109/ojsscs.2021.3110943</a>","ama":"Zazzi A, Müller J, Weizel M, et al. Optically Enabled ADCs and Application to Optical Communications. <i>IEEE Open Journal of the Solid-State Circuits Society</i>. 2021;1:209-221. doi:<a href=\"https://doi.org/10.1109/ojsscs.2021.3110943\">10.1109/ojsscs.2021.3110943</a>","ieee":"A. Zazzi <i>et al.</i>, “Optically Enabled ADCs and Application to Optical Communications,” <i>IEEE Open Journal of the Solid-State Circuits Society</i>, vol. 1, pp. 209–221, 2021, doi: <a href=\"https://doi.org/10.1109/ojsscs.2021.3110943\">10.1109/ojsscs.2021.3110943</a>.","chicago":"Zazzi, Andrea, Juliana Müller, Maxim Weizel, Jonas Koch, Dengyang Fang, Alvaro Moscoso-Martir, Ali Tabatabaei Mashayekh, et al. “Optically Enabled ADCs and Application to Optical Communications.” <i>IEEE Open Journal of the Solid-State Circuits Society</i> 1 (2021): 209–21. <a href=\"https://doi.org/10.1109/ojsscs.2021.3110943\">https://doi.org/10.1109/ojsscs.2021.3110943</a>."},"publication_identifier":{"issn":["2644-1349"]},"publication_status":"published","language":[{"iso":"eng"}],"_id":"29211","project":[{"name":"SPP 2111; TP: Ultrabreitbandiger Photonisch-Elektronischer Analog-Digital-Wandler (PACE) - Phase 2","_id":"303"}],"department":[{"_id":"58"},{"_id":"230"}],"user_id":"44271","abstract":[{"text":"Electrical-optical signal processing has been shown to be a promising path to overcome the limitations of state-of-the-art all-electrical data converters. In addition to ultra-broadband signal processing, it allows leveraging ultra-low jitter mode-locked lasers and thus increasing the aperture jitter limited effective number of bits at high analog signal frequencies. In this paper, we review our recent progress towards optically enabled time- and frequency-interleaved analog-to-digital converters, as well as their monolithic integration in electronic-photonic integrated circuits. For signal frequencies up to 65 GHz, an optoelectronic track-and-hold amplifier based on the source-emitter-follower architecture is shown as a power efficient approach in optically enabled BiCMOS technology. At higher signal frequencies, integrated photonic filters enable signal slicing in the frequency domain and further scaling of the conversion bandwidth, with the reconstruction of a 140 GHz optical signal being shown. We further show how such optically enabled data converter architectures can be applied to a nonlinear Fourier transform based integrated transceiver in particular and discuss their applicability to broadband optical links in general.","lang":"eng"}],"status":"public","publication":"IEEE Open Journal of the Solid-State Circuits Society","type":"journal_article"},{"department":[{"_id":"58"},{"_id":"230"}],"user_id":"44271","_id":"29212","project":[{"name":"SPP 2111; TP: Ultrabreitbandiger Photonisch-Elektronischer Analog-Digital-Wandler (PACE) - Phase 2","_id":"303"}],"language":[{"iso":"eng"}],"publication":"OSA Technical Digest","type":"journal_article","status":"public","author":[{"last_name":"Fang","full_name":"Fang, Dengyang","first_name":"Dengyang"},{"full_name":"Zazzi, Andrea","last_name":"Zazzi","first_name":"Andrea"},{"last_name":"Müller","full_name":"Müller, Juliana","first_name":"Juliana"},{"last_name":"Daniel","full_name":"Daniel, Drayß","first_name":"Drayß"},{"first_name":"Christoph","last_name":"Füllner","full_name":"Füllner, Christoph"},{"last_name":"Marin-Palomo","full_name":"Marin-Palomo, Pablo","first_name":"Pablo"},{"last_name":"Mashayekh","full_name":"Mashayekh, Ali Tabatabaei","first_name":"Ali Tabatabaei"},{"last_name":"Das","full_name":"Das, Arka Dipta","first_name":"Arka Dipta"},{"first_name":"Maxim","orcid":"https://orcid.org/0000-0003-2699-9839","last_name":"Weizel","id":"44271","full_name":"Weizel, Maxim"},{"first_name":"Sergiy","last_name":"Gudyriev","full_name":"Gudyriev, Sergiy"},{"first_name":"Wolfgang","full_name":"Freude, Wolfgang","last_name":"Freude"},{"first_name":"Sebastian","full_name":"Randel, Sebastian","last_name":"Randel"},{"first_name":"J. Christoph","id":"37144","full_name":"Scheytt, J. Christoph","orcid":"https://orcid.org/0000-0002-5950-6618","last_name":"Scheytt"},{"full_name":"Witzens, Jeremy","last_name":"Witzens","first_name":"Jeremy"},{"last_name":"Koos","full_name":"Koos, Christian","first_name":"Christian"}],"date_created":"2022-01-10T14:29:23Z","date_updated":"2025-10-30T09:14:37Z","doi":"10.1109/JLT.2021.3130764","title":"Optical Arbitrary Waveform Measurement (OAWM) on the Silicon Photonic Platform","publication_identifier":{"isbn":["978-1-943580-86-6"]},"citation":{"mla":"Fang, Dengyang, et al. “Optical Arbitrary Waveform Measurement (OAWM) on the Silicon Photonic Platform.” <i>OSA Technical Digest</i>, 2021, doi:<a href=\"https://doi.org/10.1109/JLT.2021.3130764\">10.1109/JLT.2021.3130764</a>.","short":"D. Fang, A. Zazzi, J. Müller, D. Daniel, C. Füllner, P. Marin-Palomo, A.T. Mashayekh, A.D. Das, M. Weizel, S. Gudyriev, W. Freude, S. Randel, J.C. Scheytt, J. Witzens, C. Koos, OSA Technical Digest (2021).","bibtex":"@article{Fang_Zazzi_Müller_Daniel_Füllner_Marin-Palomo_Mashayekh_Das_Weizel_Gudyriev_et al._2021, title={Optical Arbitrary Waveform Measurement (OAWM) on the Silicon Photonic Platform}, DOI={<a href=\"https://doi.org/10.1109/JLT.2021.3130764\">10.1109/JLT.2021.3130764</a>}, journal={OSA Technical Digest}, author={Fang, Dengyang and Zazzi, Andrea and Müller, Juliana and Daniel, Drayß and Füllner, Christoph and Marin-Palomo, Pablo and Mashayekh, Ali Tabatabaei and Das, Arka Dipta and Weizel, Maxim and Gudyriev, Sergiy and et al.}, year={2021} }","apa":"Fang, D., Zazzi, A., Müller, J., Daniel, D., Füllner, C., Marin-Palomo, P., Mashayekh, A. T., Das, A. D., Weizel, M., Gudyriev, S., Freude, W., Randel, S., Scheytt, J. C., Witzens, J., &#38; Koos, C. (2021). Optical Arbitrary Waveform Measurement (OAWM) on the Silicon Photonic Platform. <i>OSA Technical Digest</i>. <a href=\"https://doi.org/10.1109/JLT.2021.3130764\">https://doi.org/10.1109/JLT.2021.3130764</a>","ieee":"D. Fang <i>et al.</i>, “Optical Arbitrary Waveform Measurement (OAWM) on the Silicon Photonic Platform,” <i>OSA Technical Digest</i>, 2021, doi: <a href=\"https://doi.org/10.1109/JLT.2021.3130764\">10.1109/JLT.2021.3130764</a>.","chicago":"Fang, Dengyang, Andrea Zazzi, Juliana Müller, Drayß Daniel, Christoph Füllner, Pablo Marin-Palomo, Ali Tabatabaei Mashayekh, et al. “Optical Arbitrary Waveform Measurement (OAWM) on the Silicon Photonic Platform.” <i>OSA Technical Digest</i>, 2021. <a href=\"https://doi.org/10.1109/JLT.2021.3130764\">https://doi.org/10.1109/JLT.2021.3130764</a>.","ama":"Fang D, Zazzi A, Müller J, et al. Optical Arbitrary Waveform Measurement (OAWM) on the Silicon Photonic Platform. <i>OSA Technical Digest</i>. Published online 2021. doi:<a href=\"https://doi.org/10.1109/JLT.2021.3130764\">10.1109/JLT.2021.3130764</a>"},"year":"2021"},{"status":"public","type":"journal_article","publication":"Optics Express","article_number":"16312","language":[{"iso":"eng"}],"project":[{"name":"SPP 2111; TP: Ultrabreitbandiger Photonisch-Elektronischer Analog-Digital-Wandler (PACE) - Phase 2","_id":"303"},{"_id":"298","name":"FOR 2863: Metrologie für die THz Kommunikation (Meteracom)"},{"name":"FOR 2863:  Metrologie für die THz Kommunikation, TP: Ultrabreitbandige Abtastung","_id":"308"}],"_id":"23476","user_id":"44271","department":[{"_id":"58"},{"_id":"230"}],"year":"2021","citation":{"apa":"Weizel, M., Scheytt, J. C., Kärtner, F. X., &#38; Witzens, J. (2021). Optically clocked switched-emitter-follower THA in a photonic SiGe BiCMOS technology. <i>Optics Express</i>, Article 16312. <a href=\"https://doi.org/10.1364/oe.425710\">https://doi.org/10.1364/oe.425710</a>","short":"M. Weizel, J.C. Scheytt, F.X. Kärtner, J. Witzens, Optics Express (2021).","mla":"Weizel, Maxim, et al. “Optically Clocked Switched-Emitter-Follower THA in a Photonic SiGe BiCMOS Technology.” <i>Optics Express</i>, 16312, 2021, doi:<a href=\"https://doi.org/10.1364/oe.425710\">10.1364/oe.425710</a>.","bibtex":"@article{Weizel_Scheytt_Kärtner_Witzens_2021, title={Optically clocked switched-emitter-follower THA in a photonic SiGe BiCMOS technology}, DOI={<a href=\"https://doi.org/10.1364/oe.425710\">10.1364/oe.425710</a>}, number={16312}, journal={Optics Express}, author={Weizel, Maxim and Scheytt, J. Christoph and Kärtner, Franz X. and Witzens, Jeremy}, year={2021} }","ama":"Weizel M, Scheytt JC, Kärtner FX, Witzens J. Optically clocked switched-emitter-follower THA in a photonic SiGe BiCMOS technology. <i>Optics Express</i>. Published online 2021. doi:<a href=\"https://doi.org/10.1364/oe.425710\">10.1364/oe.425710</a>","ieee":"M. Weizel, J. C. Scheytt, F. X. Kärtner, and J. Witzens, “Optically clocked switched-emitter-follower THA in a photonic SiGe BiCMOS technology,” <i>Optics Express</i>, Art. no. 16312, 2021, doi: <a href=\"https://doi.org/10.1364/oe.425710\">10.1364/oe.425710</a>.","chicago":"Weizel, Maxim, J. Christoph Scheytt, Franz X. Kärtner, and Jeremy Witzens. “Optically Clocked Switched-Emitter-Follower THA in a Photonic SiGe BiCMOS Technology.” <i>Optics Express</i>, 2021. <a href=\"https://doi.org/10.1364/oe.425710\">https://doi.org/10.1364/oe.425710</a>."},"publication_status":"published","publication_identifier":{"issn":["1094-4087"]},"title":"Optically clocked switched-emitter-follower THA in a photonic SiGe BiCMOS technology","doi":"10.1364/oe.425710","date_updated":"2025-10-30T09:22:22Z","date_created":"2021-08-24T08:49:56Z","author":[{"orcid":"https://orcid.org/0000-0003-2699-9839","last_name":"Weizel","id":"44271","full_name":"Weizel, Maxim","first_name":"Maxim"},{"first_name":"J. Christoph","full_name":"Scheytt, J. Christoph","id":"37144","orcid":"https://orcid.org/0000-0002-5950-6618","last_name":"Scheytt"},{"full_name":"Kärtner, Franz X.","last_name":"Kärtner","first_name":"Franz X."},{"first_name":"Jeremy","last_name":"Witzens","full_name":"Witzens, Jeremy"}]},{"year":"2021","page":"1141-1164","intvolume":"        37","citation":{"apa":"Scheunemann, A., Schnettler, T., Bobe, J., Fries, S., &#38; Grunschel, C. (2021). A longitudinal analysis of the reciprocal relationship between academic procrastination, study satisfaction, and dropout intentions in higher education. <i>European Journal of Psychology of Education</i>, <i>37</i>(4), 1141–1164. <a href=\"https://doi.org/10.1007/s10212-021-00571-z\">https://doi.org/10.1007/s10212-021-00571-z</a>","bibtex":"@article{Scheunemann_Schnettler_Bobe_Fries_Grunschel_2021, title={A longitudinal analysis of the reciprocal relationship between academic procrastination, study satisfaction, and dropout intentions in higher education}, volume={37}, DOI={<a href=\"https://doi.org/10.1007/s10212-021-00571-z\">10.1007/s10212-021-00571-z</a>}, number={4}, journal={European Journal of Psychology of Education}, publisher={Springer Science and Business Media LLC}, author={Scheunemann, Anne and Schnettler, Theresa and Bobe, Julia and Fries, Stefan and Grunschel, Carola}, year={2021}, pages={1141–1164} }","mla":"Scheunemann, Anne, et al. “A Longitudinal Analysis of the Reciprocal Relationship between Academic Procrastination, Study Satisfaction, and Dropout Intentions in Higher Education.” <i>European Journal of Psychology of Education</i>, vol. 37, no. 4, Springer Science and Business Media LLC, 2021, pp. 1141–64, doi:<a href=\"https://doi.org/10.1007/s10212-021-00571-z\">10.1007/s10212-021-00571-z</a>.","short":"A. Scheunemann, T. Schnettler, J. Bobe, S. Fries, C. Grunschel, European Journal of Psychology of Education 37 (2021) 1141–1164.","ieee":"A. Scheunemann, T. Schnettler, J. Bobe, S. Fries, and C. Grunschel, “A longitudinal analysis of the reciprocal relationship between academic procrastination, study satisfaction, and dropout intentions in higher education,” <i>European Journal of Psychology of Education</i>, vol. 37, no. 4, pp. 1141–1164, 2021, doi: <a href=\"https://doi.org/10.1007/s10212-021-00571-z\">10.1007/s10212-021-00571-z</a>.","chicago":"Scheunemann, Anne, Theresa Schnettler, Julia Bobe, Stefan Fries, and Carola Grunschel. “A Longitudinal Analysis of the Reciprocal Relationship between Academic Procrastination, Study Satisfaction, and Dropout Intentions in Higher Education.” <i>European Journal of Psychology of Education</i> 37, no. 4 (2021): 1141–64. <a href=\"https://doi.org/10.1007/s10212-021-00571-z\">https://doi.org/10.1007/s10212-021-00571-z</a>.","ama":"Scheunemann A, Schnettler T, Bobe J, Fries S, Grunschel C. A longitudinal analysis of the reciprocal relationship between academic procrastination, study satisfaction, and dropout intentions in higher education. <i>European Journal of Psychology of Education</i>. 2021;37(4):1141-1164. doi:<a href=\"https://doi.org/10.1007/s10212-021-00571-z\">10.1007/s10212-021-00571-z</a>"},"publication_identifier":{"issn":["0256-2928","1878-5174"]},"publication_status":"published","issue":"4","title":"A longitudinal analysis of the reciprocal relationship between academic procrastination, study satisfaction, and dropout intentions in higher education","doi":"10.1007/s10212-021-00571-z","date_updated":"2025-11-04T07:54:31Z","publisher":"Springer Science and Business Media LLC","volume":37,"date_created":"2025-02-21T08:42:51Z","author":[{"last_name":"Scheunemann","full_name":"Scheunemann, Anne","first_name":"Anne"},{"last_name":"Schnettler","full_name":"Schnettler, Theresa","first_name":"Theresa"},{"full_name":"Bobe, Julia","last_name":"Bobe","first_name":"Julia"},{"full_name":"Fries, Stefan","last_name":"Fries","first_name":"Stefan"},{"first_name":"Carola","full_name":"Grunschel, Carola","last_name":"Grunschel"}],"abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title><jats:p>Student dropout is a multi-causal process. Different theoretical models on student dropout consider dysfunctional study behavior (e.g., academic procrastination) and low study satisfaction as possible determinants of students’ dropout intentions during their university studies. However, these models neglect contemporary conceptualizations that assume reverse relationships between dropout intentions and other determinants of the dropout process. Until now, empirical evidence on these assumptions is scant. The present three-wave longitudinal study explored the reciprocal relationships between academic procrastination, study satisfaction, and dropout intentions over one semester. To this end, we used data of <jats:italic>N</jats:italic> = 326 undergraduate students enrolled in mathematics and law. Our latent cross-lagged panel model replicated existing empirical cross-sectional findings between the variables (i.e., academic procrastination, study satisfaction, and dropout intentions). Regarding the longitudinal relations, as expected, the cross-lagged effects showed that higher dropout intentions significantly related to subsequent higher academic procrastination and lower study satisfaction. Unexpectedly, academic procrastination did not significantly relate to subsequent dropout intentions. Additionally, higher study satisfaction significantly associated with subsequent higher dropout intentions—possibly due to unfulfilled expectations. Further, higher study satisfaction significantly related to subsequent higher procrastination—possibly due to more confidence among satisfied students. Our results broaden the view on dropout intentions as part of the dynamic interplay of student dropout determinants and the need to refine dropout models’ assumptions accordingly. Practically, realistic expectations seem important to reduce dropout intentions. Further, student counselors should have a closer look at the reasons for academic procrastination to develop individual solutions for this dysfunctional behavior.</jats:p>"}],"status":"public","publication":"European Journal of Psychology of Education","type":"journal_article","language":[{"iso":"eng"}],"_id":"58746","user_id":"81770"},{"year":"2021","citation":{"apa":"Korsmeier, T., Bobe, J., &#38; Klingsieck, K. B. (2021). Prokrastination bei Studierenden verringern durch Anwendung eines Ratgebers im Gruppensetting. <i>Zeitschrift Für Beratung Und Studium</i>, <i>16</i>, 22–27.","short":"T. Korsmeier, J. Bobe, K.B. Klingsieck, Zeitschrift Für Beratung Und Studium 16 (2021) 22–27.","mla":"Korsmeier, Theresa, et al. “Prokrastination Bei Studierenden Verringern Durch Anwendung Eines Ratgebers Im Gruppensetting.” <i>Zeitschrift Für Beratung Und Studium</i>, vol. 16, 2021, pp. 22–27.","bibtex":"@article{Korsmeier_Bobe_Klingsieck_2021, title={Prokrastination bei Studierenden verringern durch Anwendung eines Ratgebers im Gruppensetting}, volume={16}, journal={Zeitschrift für Beratung und Studium}, author={Korsmeier, Theresa  and Bobe, Julia and Klingsieck, Katrin B.}, year={2021}, pages={22–27} }","ama":"Korsmeier T, Bobe J, Klingsieck KB. Prokrastination bei Studierenden verringern durch Anwendung eines Ratgebers im Gruppensetting. <i>Zeitschrift für Beratung und Studium</i>. 2021;16:22-27.","ieee":"T. Korsmeier, J. Bobe, and K. B. Klingsieck, “Prokrastination bei Studierenden verringern durch Anwendung eines Ratgebers im Gruppensetting,” <i>Zeitschrift für Beratung und Studium</i>, vol. 16, pp. 22–27, 2021.","chicago":"Korsmeier, Theresa , Julia Bobe, and Katrin B. Klingsieck. “Prokrastination Bei Studierenden Verringern Durch Anwendung Eines Ratgebers Im Gruppensetting.” <i>Zeitschrift Für Beratung Und Studium</i> 16 (2021): 22–27."},"intvolume":"        16","page":"22-27","date_updated":"2025-11-04T07:54:55Z","author":[{"first_name":"Theresa ","last_name":"Korsmeier","full_name":"Korsmeier, Theresa "},{"last_name":"Bobe","full_name":"Bobe, Julia","id":"81770","first_name":"Julia"},{"first_name":"Katrin B.","full_name":"Klingsieck, Katrin B.","id":"36716","last_name":"Klingsieck"}],"date_created":"2023-01-08T16:23:59Z","volume":16,"title":"Prokrastination bei Studierenden verringern durch Anwendung eines Ratgebers im Gruppensetting","type":"journal_article","publication":"Zeitschrift für Beratung und Studium","status":"public","_id":"35421","user_id":"36716","department":[{"_id":"31"}],"language":[{"iso":"eng"}],"extern":"1"},{"publication_status":"published","publication_identifier":{"issn":["1439-9598","1868-0054"]},"issue":"3","year":"2021","citation":{"ama":"Paradies J, Andexer J, Beifuss U, et al. Organische Chemie. <i>Nachrichten aus der Chemie</i>. 2021;69(3):38-68. doi:<a href=\"https://doi.org/10.1002/nadc.20214105947\">10.1002/nadc.20214105947</a>","chicago":"Paradies, Jan, Jennifer Andexer, Uwe Beifuss, Florian Beuerle, Malte Brasholz, Rolf Breinbauer, Martin Ernst, et al. “Organische Chemie.” <i>Nachrichten Aus Der Chemie</i> 69, no. 3 (2021): 38–68. <a href=\"https://doi.org/10.1002/nadc.20214105947\">https://doi.org/10.1002/nadc.20214105947</a>.","ieee":"J. Paradies <i>et al.</i>, “Organische Chemie,” <i>Nachrichten aus der Chemie</i>, vol. 69, no. 3, pp. 38–68, 2021, doi: <a href=\"https://doi.org/10.1002/nadc.20214105947\">10.1002/nadc.20214105947</a>.","short":"J. Paradies, J. Andexer, U. Beifuss, F. Beuerle, M. Brasholz, R. Breinbauer, M. Ernst, R. Ganardi, T.A.M. Gulder, W. Hüttel, S. Kath‐Schorr, K. Körber, M. Kordes, M. Lehmann, T. Lindel, B. Luy, C. Mück‐Lichtenfeld, C. Muhle‐Goll, J. Niemeyer, R. Pfau, J. Pietruszka, J.L. Röckl, N. Schaschke, M.O. Senge, B.F. Straub, S.R. Waldvogel, T. Werner, D.B. Werz, C. Winter, Nachrichten Aus Der Chemie 69 (2021) 38–68.","mla":"Paradies, Jan, et al. “Organische Chemie.” <i>Nachrichten Aus Der Chemie</i>, vol. 69, no. 3, Wiley, 2021, pp. 38–68, doi:<a href=\"https://doi.org/10.1002/nadc.20214105947\">10.1002/nadc.20214105947</a>.","bibtex":"@article{Paradies_Andexer_Beifuss_Beuerle_Brasholz_Breinbauer_Ernst_Ganardi_Gulder_Hüttel_et al._2021, title={Organische Chemie}, volume={69}, DOI={<a href=\"https://doi.org/10.1002/nadc.20214105947\">10.1002/nadc.20214105947</a>}, number={3}, journal={Nachrichten aus der Chemie}, publisher={Wiley}, author={Paradies, Jan and Andexer, Jennifer and Beifuss, Uwe and Beuerle, Florian and Brasholz, Malte and Breinbauer, Rolf and Ernst, Martin and Ganardi, Ruth and Gulder, Tobias A. M. and Hüttel, Wolfgang and et al.}, year={2021}, pages={38–68} }","apa":"Paradies, J., Andexer, J., Beifuss, U., Beuerle, F., Brasholz, M., Breinbauer, R., Ernst, M., Ganardi, R., Gulder, T. A. M., Hüttel, W., Kath‐Schorr, S., Körber, K., Kordes, M., Lehmann, M., Lindel, T., Luy, B., Mück‐Lichtenfeld, C., Muhle‐Goll, C., Niemeyer, J., … Winter, C. (2021). Organische Chemie. <i>Nachrichten Aus Der Chemie</i>, <i>69</i>(3), 38–68. <a href=\"https://doi.org/10.1002/nadc.20214105947\">https://doi.org/10.1002/nadc.20214105947</a>"},"intvolume":"        69","page":"38-68","date_updated":"2025-11-10T08:02:44Z","publisher":"Wiley","date_created":"2023-01-22T20:28:35Z","author":[{"last_name":"Paradies","orcid":"0000-0002-3698-668X","id":"53339","full_name":"Paradies, Jan","first_name":"Jan"},{"last_name":"Andexer","full_name":"Andexer, Jennifer","first_name":"Jennifer"},{"full_name":"Beifuss, Uwe","last_name":"Beifuss","first_name":"Uwe"},{"full_name":"Beuerle, Florian","last_name":"Beuerle","first_name":"Florian"},{"first_name":"Malte","last_name":"Brasholz","full_name":"Brasholz, Malte"},{"last_name":"Breinbauer","full_name":"Breinbauer, Rolf","first_name":"Rolf"},{"first_name":"Martin","last_name":"Ernst","full_name":"Ernst, Martin"},{"first_name":"Ruth","full_name":"Ganardi, Ruth","last_name":"Ganardi"},{"first_name":"Tobias A. M.","full_name":"Gulder, Tobias A. M.","last_name":"Gulder"},{"first_name":"Wolfgang","full_name":"Hüttel, Wolfgang","last_name":"Hüttel"},{"full_name":"Kath‐Schorr, Stephanie","last_name":"Kath‐Schorr","first_name":"Stephanie"},{"first_name":"Karsten","last_name":"Körber","full_name":"Körber, Karsten"},{"first_name":"Markus","last_name":"Kordes","full_name":"Kordes, Markus"},{"full_name":"Lehmann, Matthias","last_name":"Lehmann","first_name":"Matthias"},{"last_name":"Lindel","full_name":"Lindel, Thomas","first_name":"Thomas"},{"first_name":"Burkhard","last_name":"Luy","full_name":"Luy, Burkhard"},{"full_name":"Mück‐Lichtenfeld, Christian","last_name":"Mück‐Lichtenfeld","first_name":"Christian"},{"first_name":"Claudia","full_name":"Muhle‐Goll, Claudia","last_name":"Muhle‐Goll"},{"last_name":"Niemeyer","full_name":"Niemeyer, Jochen","first_name":"Jochen"},{"first_name":"Roland","full_name":"Pfau, Roland","last_name":"Pfau"},{"last_name":"Pietruszka","full_name":"Pietruszka, Jörg","first_name":"Jörg"},{"first_name":"Johannes L.","full_name":"Röckl, Johannes L.","last_name":"Röckl"},{"last_name":"Schaschke","full_name":"Schaschke, Norbert","first_name":"Norbert"},{"first_name":"Mathias O.","full_name":"Senge, Mathias O.","last_name":"Senge"},{"first_name":"Bernd F.","last_name":"Straub","full_name":"Straub, Bernd F."},{"full_name":"Waldvogel, Siegfried R.","last_name":"Waldvogel","first_name":"Siegfried R."},{"last_name":"Werner","orcid":"0000-0001-9025-3244","id":"89271","full_name":"Werner, Thomas","first_name":"Thomas"},{"full_name":"Werz, Daniel B.","last_name":"Werz","first_name":"Daniel B."},{"first_name":"Christian","last_name":"Winter","full_name":"Winter, Christian"}],"volume":69,"title":"Organische Chemie","doi":"10.1002/nadc.20214105947","type":"journal_article","publication":"Nachrichten aus der Chemie","status":"public","_id":"37947","user_id":"89271","department":[{"_id":"35"},{"_id":"2"},{"_id":"657"}],"keyword":["General Chemical Engineering","General Chemistry"],"language":[{"iso":"eng"}]},{"extern":"1","_id":"37950","user_id":"89271","department":[{"_id":"35"},{"_id":"2"},{"_id":"657"}],"status":"public","type":"journal_article","doi":"10.1002/cssc.202002267","date_updated":"2025-11-10T08:04:27Z","author":[{"full_name":"Hu, Yuya","last_name":"Hu","first_name":"Yuya"},{"full_name":"Wei, Zhihong","last_name":"Wei","first_name":"Zhihong"},{"full_name":"Frey, Anna","last_name":"Frey","first_name":"Anna"},{"last_name":"Kubis","full_name":"Kubis, Christoph","first_name":"Christoph"},{"first_name":"Chang‐Yue","last_name":"Ren","full_name":"Ren, Chang‐Yue"},{"last_name":"Spannenberg","full_name":"Spannenberg, Anke","first_name":"Anke"},{"first_name":"Haijun","last_name":"Jiao","full_name":"Jiao, Haijun"},{"full_name":"Werner, Thomas","id":"89271","last_name":"Werner","orcid":"0000-0001-9025-3244","first_name":"Thomas"}],"volume":14,"citation":{"chicago":"Hu, Yuya, Zhihong Wei, Anna Frey, Christoph Kubis, Chang‐Yue Ren, Anke Spannenberg, Haijun Jiao, and Thomas Werner. “Catalytic, Kinetic, and Mechanistic Insights into the Fixation of CO<sub>2</sub> with Epoxides Catalyzed by Phenol‐Functionalized Phosphonium Salts.” <i>ChemSusChem</i> 14, no. 1 (2021): 363–72. <a href=\"https://doi.org/10.1002/cssc.202002267\">https://doi.org/10.1002/cssc.202002267</a>.","ieee":"Y. Hu <i>et al.</i>, “Catalytic, Kinetic, and Mechanistic Insights into the Fixation of CO<sub>2</sub> with Epoxides Catalyzed by Phenol‐Functionalized Phosphonium Salts,” <i>ChemSusChem</i>, vol. 14, no. 1, pp. 363–372, 2021, doi: <a href=\"https://doi.org/10.1002/cssc.202002267\">10.1002/cssc.202002267</a>.","ama":"Hu Y, Wei Z, Frey A, et al. Catalytic, Kinetic, and Mechanistic Insights into the Fixation of CO<sub>2</sub> with Epoxides Catalyzed by Phenol‐Functionalized Phosphonium Salts. <i>ChemSusChem</i>. 2021;14(1):363-372. doi:<a href=\"https://doi.org/10.1002/cssc.202002267\">10.1002/cssc.202002267</a>","short":"Y. Hu, Z. Wei, A. Frey, C. Kubis, C. Ren, A. Spannenberg, H. Jiao, T. Werner, ChemSusChem 14 (2021) 363–372.","mla":"Hu, Yuya, et al. “Catalytic, Kinetic, and Mechanistic Insights into the Fixation of CO<sub>2</sub> with Epoxides Catalyzed by Phenol‐Functionalized Phosphonium Salts.” <i>ChemSusChem</i>, vol. 14, no. 1, Wiley, 2021, pp. 363–72, doi:<a href=\"https://doi.org/10.1002/cssc.202002267\">10.1002/cssc.202002267</a>.","bibtex":"@article{Hu_Wei_Frey_Kubis_Ren_Spannenberg_Jiao_Werner_2021, title={Catalytic, Kinetic, and Mechanistic Insights into the Fixation of CO<sub>2</sub> with Epoxides Catalyzed by Phenol‐Functionalized Phosphonium Salts}, volume={14}, DOI={<a href=\"https://doi.org/10.1002/cssc.202002267\">10.1002/cssc.202002267</a>}, number={1}, journal={ChemSusChem}, publisher={Wiley}, author={Hu, Yuya and Wei, Zhihong and Frey, Anna and Kubis, Christoph and Ren, Chang‐Yue and Spannenberg, Anke and Jiao, Haijun and Werner, Thomas}, year={2021}, pages={363–372} }","apa":"Hu, Y., Wei, Z., Frey, A., Kubis, C., Ren, C., Spannenberg, A., Jiao, H., &#38; Werner, T. (2021). Catalytic, Kinetic, and Mechanistic Insights into the Fixation of CO<sub>2</sub> with Epoxides Catalyzed by Phenol‐Functionalized Phosphonium Salts. <i>ChemSusChem</i>, <i>14</i>(1), 363–372. <a href=\"https://doi.org/10.1002/cssc.202002267\">https://doi.org/10.1002/cssc.202002267</a>"},"intvolume":"        14","page":"363-372","publication_status":"published","publication_identifier":{"issn":["1864-5631","1864-564X"]},"keyword":["T1"],"language":[{"iso":"eng"}],"publication":"ChemSusChem","title":"Catalytic, Kinetic, and Mechanistic Insights into the Fixation of CO<sub>2</sub> with Epoxides Catalyzed by Phenol‐Functionalized Phosphonium Salts","publisher":"Wiley","date_created":"2023-01-22T20:34:17Z","year":"2021","issue":"1"},{"doi":"10.1055/a-1509-6078","title":"Base-Free Catalytic Wittig-/Cross-Coupling Reaction Sequence as Short Synthetic Strategy for the Preparation of Highly Functionalized Arylbenzoxepinones","volume":53,"author":[{"first_name":"Thomas","full_name":"Werner, Thomas","id":"89271","orcid":"0000-0001-9025-3244","last_name":"Werner"},{"last_name":"Grandane","full_name":"Grandane, Aiga","first_name":"Aiga"},{"first_name":"Linda","last_name":"Pudnika","full_name":"Pudnika, Linda"},{"last_name":"Domraceva","full_name":"Domraceva, Ilona","first_name":"Ilona"},{"first_name":"Raivis","last_name":"Zalubovskis","full_name":"Zalubovskis, Raivis"}],"date_created":"2023-01-22T20:27:34Z","date_updated":"2025-11-10T08:47:47Z","publisher":"Georg Thieme Verlag KG","intvolume":"        53","page":"3545-3554","citation":{"mla":"Werner, Thomas, et al. “Base-Free Catalytic Wittig-/Cross-Coupling Reaction Sequence as Short Synthetic Strategy for the Preparation of Highly Functionalized Arylbenzoxepinones.” <i>Synthesis</i>, vol. 53, no. 19, Georg Thieme Verlag KG, 2021, pp. 3545–54, doi:<a href=\"https://doi.org/10.1055/a-1509-6078\">10.1055/a-1509-6078</a>.","short":"T. Werner, A. Grandane, L. Pudnika, I. Domraceva, R. Zalubovskis, Synthesis 53 (2021) 3545–3554.","bibtex":"@article{Werner_Grandane_Pudnika_Domraceva_Zalubovskis_2021, title={Base-Free Catalytic Wittig-/Cross-Coupling Reaction Sequence as Short Synthetic Strategy for the Preparation of Highly Functionalized Arylbenzoxepinones}, volume={53}, DOI={<a href=\"https://doi.org/10.1055/a-1509-6078\">10.1055/a-1509-6078</a>}, number={19}, journal={Synthesis}, publisher={Georg Thieme Verlag KG}, author={Werner, Thomas and Grandane, Aiga and Pudnika, Linda and Domraceva, Ilona and Zalubovskis, Raivis}, year={2021}, pages={3545–3554} }","apa":"Werner, T., Grandane, A., Pudnika, L., Domraceva, I., &#38; Zalubovskis, R. (2021). Base-Free Catalytic Wittig-/Cross-Coupling Reaction Sequence as Short Synthetic Strategy for the Preparation of Highly Functionalized Arylbenzoxepinones. <i>Synthesis</i>, <i>53</i>(19), 3545–3554. <a href=\"https://doi.org/10.1055/a-1509-6078\">https://doi.org/10.1055/a-1509-6078</a>","chicago":"Werner, Thomas, Aiga Grandane, Linda Pudnika, Ilona Domraceva, and Raivis Zalubovskis. “Base-Free Catalytic Wittig-/Cross-Coupling Reaction Sequence as Short Synthetic Strategy for the Preparation of Highly Functionalized Arylbenzoxepinones.” <i>Synthesis</i> 53, no. 19 (2021): 3545–54. <a href=\"https://doi.org/10.1055/a-1509-6078\">https://doi.org/10.1055/a-1509-6078</a>.","ieee":"T. Werner, A. Grandane, L. Pudnika, I. Domraceva, and R. Zalubovskis, “Base-Free Catalytic Wittig-/Cross-Coupling Reaction Sequence as Short Synthetic Strategy for the Preparation of Highly Functionalized Arylbenzoxepinones,” <i>Synthesis</i>, vol. 53, no. 19, pp. 3545–3554, 2021, doi: <a href=\"https://doi.org/10.1055/a-1509-6078\">10.1055/a-1509-6078</a>.","ama":"Werner T, Grandane A, Pudnika L, Domraceva I, Zalubovskis R. Base-Free Catalytic Wittig-/Cross-Coupling Reaction Sequence as Short Synthetic Strategy for the Preparation of Highly Functionalized Arylbenzoxepinones. <i>Synthesis</i>. 2021;53(19):3545-3554. doi:<a href=\"https://doi.org/10.1055/a-1509-6078\">10.1055/a-1509-6078</a>"},"year":"2021","issue":"19","publication_identifier":{"issn":["0039-7881","1437-210X"]},"publication_status":"published","language":[{"iso":"eng"}],"keyword":["T2","T4","CSSD"],"department":[{"_id":"35"},{"_id":"2"},{"_id":"657"}],"user_id":"89271","_id":"37946","status":"public","abstract":[{"text":"<jats:title>Abstract</jats:title><jats:p>The facile synthesis of highly functionalized building blocks with potential biological activity is of great interest to medicinal chemistry. The benzoxepinone core structures commonly exhibit biological activity. Thus, a short and efficient synthetic route towards benzoxepine containing scaffold, which enables late stage modification was developed. Namely, base-free catalytic Wittig reactions enabled the synthesis of bromobenzoxepinones from readily available starting materials. Subsequent, Suzuki–Miyaura and Stille reactions proved to be suitable methods to access a variety of benzoxepinone diaryl derivatives by late stage modification in only three steps. This three-step reaction sequence is suitable for high throughput applications and gives facile access to highly complex molecular structures, which are suitable for further functionalization. The antiproliferative properties of selected arylbenzoxepinones­ were tested in vitro on monolayer tumor cell line A549. Notably, in this initial screening, these compounds were found to be active in the micromolar range.</jats:p>","lang":"eng"}],"publication":"Synthesis","type":"journal_article"},{"page":"10590-10597","intvolume":"        12","citation":{"chicago":"Liu, Xin, and Thomas Werner. “Indirect Reduction of CO<sub>2</sub> and Recycling of Polymers by Manganese-Catalyzed Transfer Hydrogenation of Amides, Carbamates, Urea Derivatives, and Polyurethanes.” <i>Chemical Science</i> 12, no. 31 (2021): 10590–97. <a href=\"https://doi.org/10.1039/d1sc02663a\">https://doi.org/10.1039/d1sc02663a</a>.","ieee":"X. Liu and T. Werner, “Indirect reduction of CO<sub>2</sub> and recycling of polymers by manganese-catalyzed transfer hydrogenation of amides, carbamates, urea derivatives, and polyurethanes,” <i>Chemical Science</i>, vol. 12, no. 31, pp. 10590–10597, 2021, doi: <a href=\"https://doi.org/10.1039/d1sc02663a\">10.1039/d1sc02663a</a>.","ama":"Liu X, Werner T. Indirect reduction of CO<sub>2</sub> and recycling of polymers by manganese-catalyzed transfer hydrogenation of amides, carbamates, urea derivatives, and polyurethanes. <i>Chemical Science</i>. 2021;12(31):10590-10597. doi:<a href=\"https://doi.org/10.1039/d1sc02663a\">10.1039/d1sc02663a</a>","mla":"Liu, Xin, and Thomas Werner. “Indirect Reduction of CO<sub>2</sub> and Recycling of Polymers by Manganese-Catalyzed Transfer Hydrogenation of Amides, Carbamates, Urea Derivatives, and Polyurethanes.” <i>Chemical Science</i>, vol. 12, no. 31, Royal Society of Chemistry (RSC), 2021, pp. 10590–97, doi:<a href=\"https://doi.org/10.1039/d1sc02663a\">10.1039/d1sc02663a</a>.","short":"X. Liu, T. Werner, Chemical Science 12 (2021) 10590–10597.","bibtex":"@article{Liu_Werner_2021, title={Indirect reduction of CO<sub>2</sub> and recycling of polymers by manganese-catalyzed transfer hydrogenation of amides, carbamates, urea derivatives, and polyurethanes}, volume={12}, DOI={<a href=\"https://doi.org/10.1039/d1sc02663a\">10.1039/d1sc02663a</a>}, number={31}, journal={Chemical Science}, publisher={Royal Society of Chemistry (RSC)}, author={Liu, Xin and Werner, Thomas}, year={2021}, pages={10590–10597} }","apa":"Liu, X., &#38; Werner, T. (2021). Indirect reduction of CO<sub>2</sub> and recycling of polymers by manganese-catalyzed transfer hydrogenation of amides, carbamates, urea derivatives, and polyurethanes. <i>Chemical Science</i>, <i>12</i>(31), 10590–10597. <a href=\"https://doi.org/10.1039/d1sc02663a\">https://doi.org/10.1039/d1sc02663a</a>"},"year":"2021","issue":"31","publication_identifier":{"issn":["2041-6520","2041-6539"]},"publication_status":"published","doi":"10.1039/d1sc02663a","title":"Indirect reduction of CO<sub>2</sub> and recycling of polymers by manganese-catalyzed transfer hydrogenation of amides, carbamates, urea derivatives, and polyurethanes","volume":12,"date_created":"2023-01-22T20:24:03Z","author":[{"first_name":"Xin","full_name":"Liu, Xin","last_name":"Liu"},{"first_name":"Thomas","full_name":"Werner, Thomas","id":"89271","orcid":"https://orcid.org/0000-0001-9025-3244","last_name":"Werner"}],"date_updated":"2025-11-10T08:49:01Z","publisher":"Royal Society of Chemistry (RSC)","status":"public","abstract":[{"text":"<p>A Mn–PNP complex proved to be a suitable catalyst for the transfer hydrogenation of amides, carbamates, urea derivatives and even polyurethanes.</p>","lang":"eng"}],"publication":"Chemical Science","type":"journal_article","language":[{"iso":"eng"}],"keyword":["T1","T3","CSSD"],"department":[{"_id":"35"},{"_id":"2"},{"_id":"657"}],"user_id":"89271","_id":"37944"},{"title":"Poly(methylhydrosiloxane) as a reductant in the catalytic base-free Wittig reaction","publisher":"Royal Society of Chemistry (RSC)","date_created":"2023-01-22T20:25:13Z","year":"2021","issue":"13","keyword":["T2","CSSD"],"language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"<p>PMHS proved to be a suitable terminal reductant for P(<sc>iii</sc>)/P(<sc>v</sc>) redox cycling with a methyl-substituted phosphetane as catalyst and BuOAc as solvent. The formation of water by silanol condensation was identified as main pathway of siloxane formation.</p>"}],"publication":"Green Chemistry","doi":"10.1039/d1gc00953b","date_updated":"2025-11-10T08:48:01Z","author":[{"first_name":"Jan","full_name":"Tönjes, Jan","last_name":"Tönjes"},{"last_name":"Longwitz","full_name":"Longwitz, Lars","first_name":"Lars"},{"first_name":"Thomas","last_name":"Werner","orcid":"0000-0001-9025-3244","full_name":"Werner, Thomas","id":"89271"}],"volume":23,"citation":{"ama":"Tönjes J, Longwitz L, Werner T. Poly(methylhydrosiloxane) as a reductant in the catalytic base-free Wittig reaction. <i>Green Chemistry</i>. 2021;23(13):4852-4857. doi:<a href=\"https://doi.org/10.1039/d1gc00953b\">10.1039/d1gc00953b</a>","chicago":"Tönjes, Jan, Lars Longwitz, and Thomas Werner. “Poly(Methylhydrosiloxane) as a Reductant in the Catalytic Base-Free Wittig Reaction.” <i>Green Chemistry</i> 23, no. 13 (2021): 4852–57. <a href=\"https://doi.org/10.1039/d1gc00953b\">https://doi.org/10.1039/d1gc00953b</a>.","ieee":"J. Tönjes, L. Longwitz, and T. Werner, “Poly(methylhydrosiloxane) as a reductant in the catalytic base-free Wittig reaction,” <i>Green Chemistry</i>, vol. 23, no. 13, pp. 4852–4857, 2021, doi: <a href=\"https://doi.org/10.1039/d1gc00953b\">10.1039/d1gc00953b</a>.","bibtex":"@article{Tönjes_Longwitz_Werner_2021, title={Poly(methylhydrosiloxane) as a reductant in the catalytic base-free Wittig reaction}, volume={23}, DOI={<a href=\"https://doi.org/10.1039/d1gc00953b\">10.1039/d1gc00953b</a>}, number={13}, journal={Green Chemistry}, publisher={Royal Society of Chemistry (RSC)}, author={Tönjes, Jan and Longwitz, Lars and Werner, Thomas}, year={2021}, pages={4852–4857} }","mla":"Tönjes, Jan, et al. “Poly(Methylhydrosiloxane) as a Reductant in the Catalytic Base-Free Wittig Reaction.” <i>Green Chemistry</i>, vol. 23, no. 13, Royal Society of Chemistry (RSC), 2021, pp. 4852–57, doi:<a href=\"https://doi.org/10.1039/d1gc00953b\">10.1039/d1gc00953b</a>.","short":"J. Tönjes, L. Longwitz, T. Werner, Green Chemistry 23 (2021) 4852–4857.","apa":"Tönjes, J., Longwitz, L., &#38; Werner, T. (2021). Poly(methylhydrosiloxane) as a reductant in the catalytic base-free Wittig reaction. <i>Green Chemistry</i>, <i>23</i>(13), 4852–4857. <a href=\"https://doi.org/10.1039/d1gc00953b\">https://doi.org/10.1039/d1gc00953b</a>"},"intvolume":"        23","page":"4852-4857","publication_status":"published","publication_identifier":{"issn":["1463-9262","1463-9270"]},"_id":"37945","user_id":"89271","department":[{"_id":"35"},{"_id":"2"},{"_id":"657"}],"status":"public","type":"journal_article"},{"page":"89-97","intvolume":"        25","citation":{"chicago":"Stefanow, Vivian, Aiga Grandane, Marcus Eh, Johannes Panten, Anke Spannenberg, and Thomas Werner. “Stereoselective Synthesis of a<i>Cis</i>-Cedrane-8,9-Diol as a Key Intermediate for an Amber Odorant.” <i>Organic Process Research &#38;amp; Development</i> 25, no. 1 (2021): 89–97. <a href=\"https://doi.org/10.1021/acs.oprd.0c00423\">https://doi.org/10.1021/acs.oprd.0c00423</a>.","ieee":"V. Stefanow, A. Grandane, M. Eh, J. Panten, A. Spannenberg, and T. Werner, “Stereoselective Synthesis of a<i>cis</i>-Cedrane-8,9-diol as a Key Intermediate for an Amber Odorant,” <i>Organic Process Research &#38;amp; Development</i>, vol. 25, no. 1, pp. 89–97, 2021, doi: <a href=\"https://doi.org/10.1021/acs.oprd.0c00423\">10.1021/acs.oprd.0c00423</a>.","ama":"Stefanow V, Grandane A, Eh M, Panten J, Spannenberg A, Werner T. Stereoselective Synthesis of a<i>cis</i>-Cedrane-8,9-diol as a Key Intermediate for an Amber Odorant. <i>Organic Process Research &#38;amp; Development</i>. 2021;25(1):89-97. doi:<a href=\"https://doi.org/10.1021/acs.oprd.0c00423\">10.1021/acs.oprd.0c00423</a>","mla":"Stefanow, Vivian, et al. “Stereoselective Synthesis of a<i>Cis</i>-Cedrane-8,9-Diol as a Key Intermediate for an Amber Odorant.” <i>Organic Process Research &#38;amp; Development</i>, vol. 25, no. 1, American Chemical Society (ACS), 2021, pp. 89–97, doi:<a href=\"https://doi.org/10.1021/acs.oprd.0c00423\">10.1021/acs.oprd.0c00423</a>.","bibtex":"@article{Stefanow_Grandane_Eh_Panten_Spannenberg_Werner_2021, title={Stereoselective Synthesis of a<i>cis</i>-Cedrane-8,9-diol as a Key Intermediate for an Amber Odorant}, volume={25}, DOI={<a href=\"https://doi.org/10.1021/acs.oprd.0c00423\">10.1021/acs.oprd.0c00423</a>}, number={1}, journal={Organic Process Research &#38;amp; Development}, publisher={American Chemical Society (ACS)}, author={Stefanow, Vivian and Grandane, Aiga and Eh, Marcus and Panten, Johannes and Spannenberg, Anke and Werner, Thomas}, year={2021}, pages={89–97} }","short":"V. Stefanow, A. Grandane, M. Eh, J. Panten, A. Spannenberg, T. Werner, Organic Process Research &#38;amp; Development 25 (2021) 89–97.","apa":"Stefanow, V., Grandane, A., Eh, M., Panten, J., Spannenberg, A., &#38; Werner, T. (2021). Stereoselective Synthesis of a<i>cis</i>-Cedrane-8,9-diol as a Key Intermediate for an Amber Odorant. <i>Organic Process Research &#38;amp; Development</i>, <i>25</i>(1), 89–97. <a href=\"https://doi.org/10.1021/acs.oprd.0c00423\">https://doi.org/10.1021/acs.oprd.0c00423</a>"},"year":"2021","issue":"1","publication_identifier":{"issn":["1083-6160","1520-586X"]},"publication_status":"published","doi":"10.1021/acs.oprd.0c00423","title":"Stereoselective Synthesis of a<i>cis</i>-Cedrane-8,9-diol as a Key Intermediate for an Amber Odorant","volume":25,"author":[{"full_name":"Stefanow, Vivian","last_name":"Stefanow","first_name":"Vivian"},{"last_name":"Grandane","full_name":"Grandane, Aiga","first_name":"Aiga"},{"full_name":"Eh, Marcus","last_name":"Eh","first_name":"Marcus"},{"last_name":"Panten","full_name":"Panten, Johannes","first_name":"Johannes"},{"first_name":"Anke","full_name":"Spannenberg, Anke","last_name":"Spannenberg"},{"last_name":"Werner","orcid":"0000-0001-9025-3244","id":"89271","full_name":"Werner, Thomas","first_name":"Thomas"}],"date_created":"2025-11-05T15:26:05Z","publisher":"American Chemical Society (ACS)","date_updated":"2025-11-10T08:48:33Z","status":"public","publication":"Organic Process Research &amp; Development","type":"journal_article","language":[{"iso":"eng"}],"keyword":["T4","CSSD"],"department":[{"_id":"35"},{"_id":"2"}],"user_id":"89271","_id":"62098"},{"publication_status":"published","publication_identifier":{"issn":["1083-6160","1520-586X"]},"citation":{"apa":"Stefanow, V., Grandane, A., Eh, M., Panten, J., Spannenberg, A., &#38; Werner, T. (2021). Stereoselective Synthesis of a<i>cis</i>-Cedrane-8,9-diol as a Key Intermediate for an Amber Odorant. <i>Organic Process Research &#38;amp; Development</i>, <i>25</i>(1), 89–97. <a href=\"https://doi.org/10.1021/acs.oprd.0c00423\">https://doi.org/10.1021/acs.oprd.0c00423</a>","short":"V. Stefanow, A. Grandane, M. Eh, J. Panten, A. Spannenberg, T. Werner, Organic Process Research &#38;amp; Development 25 (2021) 89–97.","bibtex":"@article{Stefanow_Grandane_Eh_Panten_Spannenberg_Werner_2021, title={Stereoselective Synthesis of a<i>cis</i>-Cedrane-8,9-diol as a Key Intermediate for an Amber Odorant}, volume={25}, DOI={<a href=\"https://doi.org/10.1021/acs.oprd.0c00423\">10.1021/acs.oprd.0c00423</a>}, number={1}, journal={Organic Process Research &#38;amp; Development}, publisher={American Chemical Society (ACS)}, author={Stefanow, Vivian and Grandane, Aiga and Eh, Marcus and Panten, Johannes and Spannenberg, Anke and Werner, Thomas}, year={2021}, pages={89–97} }","mla":"Stefanow, Vivian, et al. “Stereoselective Synthesis of a<i>Cis</i>-Cedrane-8,9-Diol as a Key Intermediate for an Amber Odorant.” <i>Organic Process Research &#38;amp; Development</i>, vol. 25, no. 1, American Chemical Society (ACS), 2021, pp. 89–97, doi:<a href=\"https://doi.org/10.1021/acs.oprd.0c00423\">10.1021/acs.oprd.0c00423</a>.","ama":"Stefanow V, Grandane A, Eh M, Panten J, Spannenberg A, Werner T. Stereoselective Synthesis of a<i>cis</i>-Cedrane-8,9-diol as a Key Intermediate for an Amber Odorant. <i>Organic Process Research &#38;amp; Development</i>. 2021;25(1):89-97. doi:<a href=\"https://doi.org/10.1021/acs.oprd.0c00423\">10.1021/acs.oprd.0c00423</a>","ieee":"V. Stefanow, A. Grandane, M. Eh, J. Panten, A. Spannenberg, and T. Werner, “Stereoselective Synthesis of a<i>cis</i>-Cedrane-8,9-diol as a Key Intermediate for an Amber Odorant,” <i>Organic Process Research &#38;amp; Development</i>, vol. 25, no. 1, pp. 89–97, 2021, doi: <a href=\"https://doi.org/10.1021/acs.oprd.0c00423\">10.1021/acs.oprd.0c00423</a>.","chicago":"Stefanow, Vivian, Aiga Grandane, Marcus Eh, Johannes Panten, Anke Spannenberg, and Thomas Werner. “Stereoselective Synthesis of a<i>Cis</i>-Cedrane-8,9-Diol as a Key Intermediate for an Amber Odorant.” <i>Organic Process Research &#38;amp; Development</i> 25, no. 1 (2021): 89–97. <a href=\"https://doi.org/10.1021/acs.oprd.0c00423\">https://doi.org/10.1021/acs.oprd.0c00423</a>."},"page":"89-97","intvolume":"        25","date_updated":"2025-11-10T08:49:27Z","author":[{"first_name":"Vivian","last_name":"Stefanow","full_name":"Stefanow, Vivian"},{"first_name":"Aiga","full_name":"Grandane, Aiga","last_name":"Grandane"},{"first_name":"Marcus","last_name":"Eh","full_name":"Eh, Marcus"},{"last_name":"Panten","full_name":"Panten, Johannes","first_name":"Johannes"},{"full_name":"Spannenberg, Anke","last_name":"Spannenberg","first_name":"Anke"},{"first_name":"Thomas","full_name":"Werner, Thomas","id":"89271","last_name":"Werner","orcid":"0000-0001-9025-3244"}],"volume":25,"doi":"10.1021/acs.oprd.0c00423","type":"journal_article","status":"public","_id":"62099","user_id":"89271","department":[{"_id":"35"},{"_id":"2"}],"issue":"1","year":"2021","publisher":"American Chemical Society (ACS)","date_created":"2025-11-05T15:28:23Z","title":"Stereoselective Synthesis of a<i>cis</i>-Cedrane-8,9-diol as a Key Intermediate for an Amber Odorant","publication":"Organic Process Research &amp; Development","keyword":["T4","CSSD"],"language":[{"iso":"eng"}]},{"article_number":"112768","keyword":["T4","CSSD"],"language":[{"iso":"eng"}],"_id":"37943","user_id":"89271","department":[{"_id":"35"},{"_id":"2"},{"_id":"657"}],"status":"public","type":"journal_article","publication":"Ecotoxicology and Environmental Safety","title":"AMPA-15N – Synthesis and application as standard compound in traceable degradation studies of glyphosate","doi":"10.1016/j.ecoenv.2021.112768","publisher":"Elsevier BV","date_updated":"2025-11-10T08:48:20Z","author":[{"last_name":"Wirth","full_name":"Wirth, Marisa A.","first_name":"Marisa A."},{"first_name":"Lars","full_name":"Longwitz, Lars","last_name":"Longwitz"},{"first_name":"Marion","last_name":"Kanwischer","full_name":"Kanwischer, Marion"},{"first_name":"Peter","full_name":"Gros, Peter","last_name":"Gros"},{"full_name":"Leinweber, Peter","last_name":"Leinweber","first_name":"Peter"},{"id":"89271","full_name":"Werner, Thomas","last_name":"Werner","orcid":"https://orcid.org/0000-0001-9025-3244","first_name":"Thomas"}],"date_created":"2023-01-22T20:23:06Z","volume":225,"year":"2021","citation":{"chicago":"Wirth, Marisa A., Lars Longwitz, Marion Kanwischer, Peter Gros, Peter Leinweber, and Thomas Werner. “AMPA-15N – Synthesis and Application as Standard Compound in Traceable Degradation Studies of Glyphosate.” <i>Ecotoxicology and Environmental Safety</i> 225 (2021). <a href=\"https://doi.org/10.1016/j.ecoenv.2021.112768\">https://doi.org/10.1016/j.ecoenv.2021.112768</a>.","ieee":"M. A. Wirth, L. Longwitz, M. Kanwischer, P. Gros, P. Leinweber, and T. Werner, “AMPA-15N – Synthesis and application as standard compound in traceable degradation studies of glyphosate,” <i>Ecotoxicology and Environmental Safety</i>, vol. 225, Art. no. 112768, 2021, doi: <a href=\"https://doi.org/10.1016/j.ecoenv.2021.112768\">10.1016/j.ecoenv.2021.112768</a>.","ama":"Wirth MA, Longwitz L, Kanwischer M, Gros P, Leinweber P, Werner T. AMPA-15N – Synthesis and application as standard compound in traceable degradation studies of glyphosate. <i>Ecotoxicology and Environmental Safety</i>. 2021;225. doi:<a href=\"https://doi.org/10.1016/j.ecoenv.2021.112768\">10.1016/j.ecoenv.2021.112768</a>","apa":"Wirth, M. A., Longwitz, L., Kanwischer, M., Gros, P., Leinweber, P., &#38; Werner, T. (2021). AMPA-15N – Synthesis and application as standard compound in traceable degradation studies of glyphosate. <i>Ecotoxicology and Environmental Safety</i>, <i>225</i>, Article 112768. <a href=\"https://doi.org/10.1016/j.ecoenv.2021.112768\">https://doi.org/10.1016/j.ecoenv.2021.112768</a>","short":"M.A. Wirth, L. Longwitz, M. Kanwischer, P. Gros, P. Leinweber, T. Werner, Ecotoxicology and Environmental Safety 225 (2021).","mla":"Wirth, Marisa A., et al. “AMPA-15N – Synthesis and Application as Standard Compound in Traceable Degradation Studies of Glyphosate.” <i>Ecotoxicology and Environmental Safety</i>, vol. 225, 112768, Elsevier BV, 2021, doi:<a href=\"https://doi.org/10.1016/j.ecoenv.2021.112768\">10.1016/j.ecoenv.2021.112768</a>.","bibtex":"@article{Wirth_Longwitz_Kanwischer_Gros_Leinweber_Werner_2021, title={AMPA-15N – Synthesis and application as standard compound in traceable degradation studies of glyphosate}, volume={225}, DOI={<a href=\"https://doi.org/10.1016/j.ecoenv.2021.112768\">10.1016/j.ecoenv.2021.112768</a>}, number={112768}, journal={Ecotoxicology and Environmental Safety}, publisher={Elsevier BV}, author={Wirth, Marisa A. and Longwitz, Lars and Kanwischer, Marion and Gros, Peter and Leinweber, Peter and Werner, Thomas}, year={2021} }"},"intvolume":"       225","publication_status":"published","publication_identifier":{"issn":["0147-6513"]}}]