[{"publisher":"Materials Research Forum LLC","date_updated":"2025-03-26T15:17:46Z","volume":52,"date_created":"2025-03-26T15:15:15Z","author":[{"first_name":"Moritz","last_name":"Neuser","id":"32340","full_name":"Neuser, Moritz"},{"first_name":"Kay-Peter","full_name":"Hoyer, Kay-Peter","id":"48411","last_name":"Hoyer"},{"id":"43720","full_name":"Schaper, Mirko","last_name":"Schaper","first_name":"Mirko"}],"title":"Processing of the hypoeutectic AlSi9 alloy with twin-roll casting by using copper shells","doi":"10.21741/9781644903551-26","quality_controlled":"1","publication_identifier":{"issn":["2474-395X"]},"publication_status":"published","year":"2025","intvolume":"        52","citation":{"ama":"Neuser M, Hoyer K-P, Schaper M. Processing of the hypoeutectic AlSi9 alloy with twin-roll casting by using copper shells. In: <i>Materials Research Proceedings</i>. Vol 52. Materials Research Forum LLC; 2025. doi:<a href=\"https://doi.org/10.21741/9781644903551-26\">10.21741/9781644903551-26</a>","ieee":"M. Neuser, K.-P. Hoyer, and M. Schaper, “Processing of the hypoeutectic AlSi9 alloy with twin-roll casting by using copper shells,” in <i>Materials Research Proceedings</i>, 2025, vol. 52, doi: <a href=\"https://doi.org/10.21741/9781644903551-26\">10.21741/9781644903551-26</a>.","chicago":"Neuser, Moritz, Kay-Peter Hoyer, and Mirko Schaper. “Processing of the Hypoeutectic AlSi9 Alloy with Twin-Roll Casting by Using Copper Shells.” In <i>Materials Research Proceedings</i>, Vol. 52. Materials Research Forum LLC, 2025. <a href=\"https://doi.org/10.21741/9781644903551-26\">https://doi.org/10.21741/9781644903551-26</a>.","short":"M. Neuser, K.-P. Hoyer, M. Schaper, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.","bibtex":"@inproceedings{Neuser_Hoyer_Schaper_2025, title={Processing of the hypoeutectic AlSi9 alloy with twin-roll casting by using copper shells}, volume={52}, DOI={<a href=\"https://doi.org/10.21741/9781644903551-26\">10.21741/9781644903551-26</a>}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Neuser, Moritz and Hoyer, Kay-Peter and Schaper, Mirko}, year={2025} }","mla":"Neuser, Moritz, et al. “Processing of the Hypoeutectic AlSi9 Alloy with Twin-Roll Casting by Using Copper Shells.” <i>Materials Research Proceedings</i>, vol. 52, Materials Research Forum LLC, 2025, doi:<a href=\"https://doi.org/10.21741/9781644903551-26\">10.21741/9781644903551-26</a>.","apa":"Neuser, M., Hoyer, K.-P., &#38; Schaper, M. (2025). Processing of the hypoeutectic AlSi9 alloy with twin-roll casting by using copper shells. <i>Materials Research Proceedings</i>, <i>52</i>. <a href=\"https://doi.org/10.21741/9781644903551-26\">https://doi.org/10.21741/9781644903551-26</a>"},"_id":"59154","department":[{"_id":"9"},{"_id":"158"}],"user_id":"48411","language":[{"iso":"eng"}],"publication":"Materials Research Proceedings","type":"conference","abstract":[{"text":"<jats:p>Abstract. Lightweight design is one of the central topics of the automotive industry since reducing mass can save emissions over the entire life cycle of a component. Nowadays, vehicle structures usually consist of a multi-material design, which poses the additional challenge of joining these different materials. Mechanical joining is the most common way of joining different types of materials. Cast aluminium alloys of the AlSi system have a low ductility, which causes cracks during the mechanical joining process in the joint. One research approach is to achieve a fine microstructure by influencing the solidification rate since this results in increased mechanical properties, specifically the elongation at fracture and yield strength. A very fine microstructure can be achieved by utilizing Twin-roll casting (TRC) which is a continuous casting process in which high solidification rates of more than 100 K/s occur. In this study, the hypoeutectic cast aluminium alloy AlSi9 is processed in the TRC process using copper rollers. The cast strips are investigated regarding the microstructure-property correlation. A variation of the roller materials and cooling conditions allows for an increase in the solidification rate, whereby a defined, fine microstructure can be achieved, which enhances the mechanical properties of the hypoeutectic aluminium casting alloys.</jats:p>","lang":"eng"}],"status":"public"},{"publication_status":"published","quality_controlled":"1","publication_identifier":{"issn":["2474-395X"]},"citation":{"chicago":"Lauth, Martin, Kay-Peter Hoyer, Mirko Schaper, and Winfried Gräfen. “Cost-Effective Repair Solution for Twin-Roll-Caster Rollers.” In <i>Materials Research Proceedings</i>, Vol. 52. Materials Research Forum LLC, 2025. <a href=\"https://doi.org/10.21741/9781644903551-5\">https://doi.org/10.21741/9781644903551-5</a>.","ieee":"M. Lauth, K.-P. Hoyer, M. Schaper, and W. Gräfen, “Cost-effective repair solution for twin-roll-caster rollers,” in <i>Materials Research Proceedings</i>, 2025, vol. 52, doi: <a href=\"https://doi.org/10.21741/9781644903551-5\">10.21741/9781644903551-5</a>.","ama":"Lauth M, Hoyer K-P, Schaper M, Gräfen W. Cost-effective repair solution for twin-roll-caster rollers. In: <i>Materials Research Proceedings</i>. Vol 52. Materials Research Forum LLC; 2025. doi:<a href=\"https://doi.org/10.21741/9781644903551-5\">10.21741/9781644903551-5</a>","short":"M. Lauth, K.-P. Hoyer, M. Schaper, W. Gräfen, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.","bibtex":"@inproceedings{Lauth_Hoyer_Schaper_Gräfen_2025, title={Cost-effective repair solution for twin-roll-caster rollers}, volume={52}, DOI={<a href=\"https://doi.org/10.21741/9781644903551-5\">10.21741/9781644903551-5</a>}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Lauth, Martin and Hoyer, Kay-Peter and Schaper, Mirko and Gräfen, Winfried}, year={2025} }","mla":"Lauth, Martin, et al. “Cost-Effective Repair Solution for Twin-Roll-Caster Rollers.” <i>Materials Research Proceedings</i>, vol. 52, Materials Research Forum LLC, 2025, doi:<a href=\"https://doi.org/10.21741/9781644903551-5\">10.21741/9781644903551-5</a>.","apa":"Lauth, M., Hoyer, K.-P., Schaper, M., &#38; Gräfen, W. (2025). Cost-effective repair solution for twin-roll-caster rollers. <i>Materials Research Proceedings</i>, <i>52</i>. <a href=\"https://doi.org/10.21741/9781644903551-5\">https://doi.org/10.21741/9781644903551-5</a>"},"intvolume":"        52","year":"2025","author":[{"first_name":"Martin","last_name":"Lauth","full_name":"Lauth, Martin","id":"13858"},{"first_name":"Kay-Peter","id":"48411","full_name":"Hoyer, Kay-Peter","last_name":"Hoyer"},{"id":"43720","full_name":"Schaper, Mirko","last_name":"Schaper","first_name":"Mirko"},{"last_name":"Gräfen","full_name":"Gräfen, Winfried","first_name":"Winfried"}],"date_created":"2025-03-26T15:16:31Z","volume":52,"publisher":"Materials Research Forum LLC","date_updated":"2025-03-26T15:17:51Z","doi":"10.21741/9781644903551-5","title":"Cost-effective repair solution for twin-roll-caster rollers","type":"conference","publication":"Materials Research Proceedings","status":"public","abstract":[{"text":"<jats:p>Abstract. Twin-Roll-Casting (TRC) is an energy- and cost-efficient process to produce near-net-shape aluminum strips. Due to the high affinity of molten aluminum to steel surfaces, those rollers show signs of wear throughout the rolling campaign. This leads to the necessity of restoring the worn surfaces to suitable parameters. The easiest way is to grind the surface till all superficial defects are omitted. However, the thickness of the roller is not endless, therefore the rollers must be replaced after a certain amount of surface reconditioning. This ultimately leads to the non-usability of the roller. This research shows a route to recondition the surface including the possibility of renewing worn-down surfaces with an energy- and cost-efficient high-velocity oxygen fuel (HVOF) treatment with subsequent grinding to the desired initial surface parameters.</jats:p>","lang":"eng"}],"user_id":"48411","department":[{"_id":"9"},{"_id":"158"}],"_id":"59155","language":[{"iso":"eng"}]},{"year":"2025","place":"Proceedings: Dimensions of Motor Control – Sport, Health, Development, Robotics","citation":{"bibtex":"@inproceedings{Margraf_Krause_Blischke_Arning_Weigelt_2025, place={Proceedings: Dimensions of Motor Control – Sport, Health, Development, Robotics}, title={Effects of the COMT Val158Met polymorphism on neural augmented-feedback processing and motor automatization.}, author={Margraf, Linda and Krause, Daniel and Blischke, Klaus  and Arning, Larissa and Weigelt, Matthias}, editor={Hermsdörfer, Joachim  and Stadler, Waltraud and Gulde, Philipp  and Franklin, David W.}, year={2025} }","mla":"Margraf, Linda, et al. <i>Effects of the COMT Val158Met Polymorphism on Neural Augmented-Feedback Processing and Motor Automatization.</i> Edited by Joachim  Hermsdörfer et al., 2025.","short":"L. Margraf, D. Krause, K. Blischke, L. Arning, M. Weigelt, in: J. Hermsdörfer, W. Stadler, P. Gulde, D.W. Franklin (Eds.), Proceedings: Dimensions of Motor Control – Sport, Health, Development, Robotics, 2025.","apa":"Margraf, L., Krause, D., Blischke, K., Arning, L., &#38; Weigelt, M. (2025). <i>Effects of the COMT Val158Met polymorphism on neural augmented-feedback processing and motor automatization.</i> (J. Hermsdörfer, W. Stadler, P. Gulde, &#38; D. W. Franklin, Eds.).","ama":"Margraf L, Krause D, Blischke K, Arning L, Weigelt M. Effects of the COMT Val158Met polymorphism on neural augmented-feedback processing and motor automatization. In: Hermsdörfer J, Stadler W, Gulde P, Franklin DW, eds. ; 2025.","chicago":"Margraf, Linda, Daniel Krause, Klaus  Blischke, Larissa Arning, and Matthias Weigelt. “Effects of the COMT Val158Met Polymorphism on Neural Augmented-Feedback Processing and Motor Automatization.” edited by Joachim  Hermsdörfer, Waltraud Stadler, Philipp  Gulde, and David W. Franklin. Proceedings: Dimensions of Motor Control – Sport, Health, Development, Robotics, 2025.","ieee":"L. Margraf, D. Krause, K. Blischke, L. Arning, and M. Weigelt, “Effects of the COMT Val158Met polymorphism on neural augmented-feedback processing and motor automatization.,” Munich, 2025."},"date_updated":"2025-03-26T09:21:58Z","author":[{"orcid":"0000-0001-5972-612X","last_name":"Margraf","full_name":"Margraf, Linda","id":"77456","first_name":"Linda"},{"last_name":"Krause","full_name":"Krause, Daniel","first_name":"Daniel"},{"first_name":"Klaus ","full_name":"Blischke, Klaus ","last_name":"Blischke"},{"first_name":"Larissa","full_name":"Arning, Larissa","last_name":"Arning"},{"first_name":"Matthias","id":"36388","full_name":"Weigelt, Matthias","last_name":"Weigelt"}],"date_created":"2025-03-26T09:18:38Z","title":"Effects of the COMT Val158Met polymorphism on neural augmented-feedback processing and motor automatization.","conference":{"location":"Munich","end_date":"2025-03-21","start_date":"2025-03-18","name":"18. Tagung der Sektion Sportmotorik der Deutschen Vereinigung für Sportwissenschaften"},"type":"conference","editor":[{"first_name":"Joachim ","last_name":"Hermsdörfer","full_name":"Hermsdörfer, Joachim "},{"first_name":"Waltraud","last_name":"Stadler","full_name":"Stadler, Waltraud"},{"full_name":"Gulde, Philipp ","last_name":"Gulde","first_name":"Philipp "},{"full_name":"Franklin, David W.","last_name":"Franklin","first_name":"David W."}],"status":"public","_id":"59146","user_id":"77456","language":[{"iso":"eng"}]},{"language":[{"iso":"eng"}],"_id":"59143","department":[{"_id":"520"}],"user_id":"391","status":"public","publication":"Mathematical Reviews, MR4654178","type":"review","title":"Moon, Stella S., “Demarcating Descartes’s Geometry with Clarity and Distinctness”, Synthese 202 (2023), No. 4, Paper No. 124, 29 pp.","main_file_link":[{"url":"https://mathscinet.ams.org/mathscinet/article?mr=4654178"}],"date_updated":"2025-03-25T15:20:30Z","date_created":"2025-03-25T15:19:51Z","author":[{"full_name":"Peckhaus, Volker","id":"391","last_name":"Peckhaus","first_name":"Volker"}],"year":"2025","citation":{"mla":"Peckhaus, Volker. “Moon, Stella S., ‘Demarcating Descartes’s Geometry with Clarity and Distinctness’, Synthese 202 (2023), No. 4, Paper No. 124, 29 Pp.” <i>Mathematical Reviews, MR4654178</i>, 2025.","short":"V. Peckhaus, Mathematical Reviews, MR4654178 (2025).","bibtex":"@article{Peckhaus_2025, title={Moon, Stella S., “Demarcating Descartes’s Geometry with Clarity and Distinctness”, Synthese 202 (2023), No. 4, Paper No. 124, 29 pp.}, journal={Mathematical Reviews, MR4654178}, author={Peckhaus, Volker}, year={2025} }","apa":"Peckhaus, V. (2025). Moon, Stella S., “Demarcating Descartes’s Geometry with Clarity and Distinctness”, Synthese 202 (2023), No. 4, Paper No. 124, 29 pp. In <i>Mathematical Reviews, MR4654178</i>.","ama":"Peckhaus V. Moon, Stella S., “Demarcating Descartes’s Geometry with Clarity and Distinctness”, Synthese 202 (2023), No. 4, Paper No. 124, 29 pp. <i>Mathematical Reviews, MR4654178</i>. Published online 2025.","chicago":"Peckhaus, Volker. “Moon, Stella S., ‘Demarcating Descartes’s Geometry with Clarity and Distinctness’, Synthese 202 (2023), No. 4, Paper No. 124, 29 Pp.” <i>Mathematical Reviews, MR4654178</i>, 2025.","ieee":"V. Peckhaus, “Moon, Stella S., ‘Demarcating Descartes’s Geometry with Clarity and Distinctness’, Synthese 202 (2023), No. 4, Paper No. 124, 29 pp.,” <i>Mathematical Reviews, MR4654178</i>. 2025."}},{"title":"Musikalische Alltagskultur im Vormärz","date_updated":"2025-03-26T17:02:58Z","publisher":"Aisthesis","volume":30,"author":[{"first_name":"Antje","last_name":"Tumat","full_name":"Tumat, Antje","id":"72268"},{"first_name":"Melissa Maria","last_name":"Korbmacher","id":"105258","full_name":"Korbmacher, Melissa Maria"}],"date_created":"2025-03-26T16:58:12Z","place":"Bielefeld","year":"2025","intvolume":"        30","page":"181-203","citation":{"bibtex":"@inbook{Tumat_Korbmacher_2025, place={Bielefeld}, series={Forum Vormärz Forschung Jahrbuch 2024}, title={Musikalische Alltagskultur im Vormärz}, volume={30}, booktitle={Alltagskultur im Vormärz}, publisher={Aisthesis}, author={Tumat, Antje and Korbmacher, Melissa Maria}, editor={Eke, Norbert Otto and Kopp, Detlev}, year={2025}, pages={181–203}, collection={Forum Vormärz Forschung Jahrbuch 2024} }","mla":"Tumat, Antje, and Melissa Maria Korbmacher. “Musikalische Alltagskultur im Vormärz.” <i>Alltagskultur im Vormärz</i>, edited by Norbert Otto Eke and Detlev Kopp, vol. 30, Aisthesis, 2025, pp. 181–203.","short":"A. Tumat, M.M. Korbmacher, in: N.O. Eke, D. Kopp (Eds.), Alltagskultur im Vormärz, Aisthesis, Bielefeld, 2025, pp. 181–203.","apa":"Tumat, A., &#38; Korbmacher, M. M. (2025). Musikalische Alltagskultur im Vormärz. In N. O. Eke &#38; D. Kopp (Eds.), <i>Alltagskultur im Vormärz</i> (Vol. 30, pp. 181–203). Aisthesis.","ama":"Tumat A, Korbmacher MM. Musikalische Alltagskultur im Vormärz. In: Eke NO, Kopp D, eds. <i>Alltagskultur im Vormärz</i>. Vol 30. Forum Vormärz Forschung Jahrbuch 2024. Aisthesis; 2025:181-203.","chicago":"Tumat, Antje, and Melissa Maria Korbmacher. “Musikalische Alltagskultur im Vormärz.” In <i>Alltagskultur im Vormärz</i>, edited by Norbert Otto Eke and Detlev Kopp, 30:181–203. Forum Vormärz Forschung Jahrbuch 2024. Bielefeld: Aisthesis, 2025.","ieee":"A. Tumat and M. M. Korbmacher, “Musikalische Alltagskultur im Vormärz,” in <i>Alltagskultur im Vormärz</i>, vol. 30, N. O. Eke and D. Kopp, Eds. Bielefeld: Aisthesis, 2025, pp. 181–203."},"language":[{"iso":"ger"}],"_id":"59164","user_id":"105258","series_title":"Forum Vormärz Forschung Jahrbuch 2024","editor":[{"first_name":"Norbert Otto","full_name":"Eke, Norbert Otto","last_name":"Eke"},{"last_name":"Kopp","full_name":"Kopp, Detlev","first_name":"Detlev"}],"status":"public","publication":"Alltagskultur im Vormärz","type":"book_chapter"},{"date_created":"2025-03-27T09:46:34Z","publisher":"Springer Science and Business Media LLC","title":"Sets of r-Graphs that Color All r-Graphs","issue":"2","year":"2025","language":[{"iso":"eng"}],"publication":"Combinatorica","abstract":[{"text":"An r-regular graph is an r-graph, if every odd set of vertices is connected to its complement by at least r edges. Let G and H be r-graphs. An H-coloring of G is a mapping such that each r adjacent edges of G are mapped to r adjacent edges of H. For every , let be an inclusion-wise minimal set of connected r-graphs, such that for every connected r-graph G there is an which colors G. The Petersen Coloring Conjecture states that consists of the Petersen graph P. We show that if true, then this is a very exclusive situation. Our main result is that either or is an infinite set and if , then is an infinite set. In particular, for all , is unique. We first characterize and then prove that if contains more than one element, then it is an infinite set. To obtain our main result we show that contains the smallest r-graphs of class 2 and the smallest poorly matchable r-graphs, and we determine the smallest r-graphs of class 2.","lang":"eng"}],"volume":45,"author":[{"first_name":"Yulai","full_name":"Ma, Yulai","last_name":"Ma"},{"first_name":"Davide","last_name":"Mattiolo","full_name":"Mattiolo, Davide"},{"id":"15548","full_name":"Steffen, Eckhard","orcid":"0000-0002-9808-7401","last_name":"Steffen","first_name":"Eckhard"},{"first_name":"Isaak H.","full_name":"Wolf, Isaak H.","last_name":"Wolf"}],"date_updated":"2025-03-27T09:48:48Z","doi":"10.1007/s00493-025-00144-4","publication_identifier":{"issn":["0209-9683","1439-6912"]},"publication_status":"published","intvolume":"        45","citation":{"apa":"Ma, Y., Mattiolo, D., Steffen, E., &#38; Wolf, I. H. (2025). Sets of r-Graphs that Color All r-Graphs. <i>Combinatorica</i>, <i>45</i>(2), Article 16. <a href=\"https://doi.org/10.1007/s00493-025-00144-4\">https://doi.org/10.1007/s00493-025-00144-4</a>","short":"Y. Ma, D. Mattiolo, E. Steffen, I.H. Wolf, Combinatorica 45 (2025).","bibtex":"@article{Ma_Mattiolo_Steffen_Wolf_2025, title={Sets of r-Graphs that Color All r-Graphs}, volume={45}, DOI={<a href=\"https://doi.org/10.1007/s00493-025-00144-4\">10.1007/s00493-025-00144-4</a>}, number={216}, journal={Combinatorica}, publisher={Springer Science and Business Media LLC}, author={Ma, Yulai and Mattiolo, Davide and Steffen, Eckhard and Wolf, Isaak H.}, year={2025} }","mla":"Ma, Yulai, et al. “Sets of R-Graphs That Color All r-Graphs.” <i>Combinatorica</i>, vol. 45, no. 2, 16, Springer Science and Business Media LLC, 2025, doi:<a href=\"https://doi.org/10.1007/s00493-025-00144-4\">10.1007/s00493-025-00144-4</a>.","chicago":"Ma, Yulai, Davide Mattiolo, Eckhard Steffen, and Isaak H. Wolf. “Sets of R-Graphs That Color All r-Graphs.” <i>Combinatorica</i> 45, no. 2 (2025). <a href=\"https://doi.org/10.1007/s00493-025-00144-4\">https://doi.org/10.1007/s00493-025-00144-4</a>.","ieee":"Y. Ma, D. Mattiolo, E. Steffen, and I. H. Wolf, “Sets of r-Graphs that Color All r-Graphs,” <i>Combinatorica</i>, vol. 45, no. 2, Art. no. 16, 2025, doi: <a href=\"https://doi.org/10.1007/s00493-025-00144-4\">10.1007/s00493-025-00144-4</a>.","ama":"Ma Y, Mattiolo D, Steffen E, Wolf IH. Sets of r-Graphs that Color All r-Graphs. <i>Combinatorica</i>. 2025;45(2). doi:<a href=\"https://doi.org/10.1007/s00493-025-00144-4\">10.1007/s00493-025-00144-4</a>"},"department":[{"_id":"542"}],"user_id":"15540","_id":"59169","article_number":"16","type":"journal_article","status":"public"},{"date_created":"2025-03-25T09:55:44Z","author":[{"last_name":"Kleinschmidt","full_name":"Kleinschmidt, Dennis","id":"40516","first_name":"Dennis"},{"first_name":"Florian","last_name":"Brüning","full_name":"Brüning, Florian","id":"72920"}],"date_updated":"2025-03-27T14:13:53Z","title":"Influence of pre-shearing on the rheological properties of filled rubber compounds","quality_controlled":"1","citation":{"mla":"Kleinschmidt, Dennis, and Florian Brüning. “Influence of Pre-Shearing on the Rheological Properties of Filled Rubber Compounds.” <i>KGK Kautschuk Gummi Kunststoffe</i>, 2025.","short":"D. Kleinschmidt, F. Brüning, KGK Kautschuk Gummi Kunststoffe (2025).","bibtex":"@article{Kleinschmidt_Brüning_2025, title={Influence of pre-shearing on the rheological properties of filled rubber compounds}, journal={KGK Kautschuk Gummi Kunststoffe}, author={Kleinschmidt, Dennis and Brüning, Florian}, year={2025} }","apa":"Kleinschmidt, D., &#38; Brüning, F. (2025). Influence of pre-shearing on the rheological properties of filled rubber compounds. <i>KGK Kautschuk Gummi Kunststoffe</i>.","chicago":"Kleinschmidt, Dennis, and Florian Brüning. “Influence of Pre-Shearing on the Rheological Properties of Filled Rubber Compounds.” <i>KGK Kautschuk Gummi Kunststoffe</i>, 2025.","ieee":"D. Kleinschmidt and F. Brüning, “Influence of pre-shearing on the rheological properties of filled rubber compounds,” <i>KGK Kautschuk Gummi Kunststoffe</i>, 2025.","ama":"Kleinschmidt D, Brüning F. Influence of pre-shearing on the rheological properties of filled rubber compounds. <i>KGK Kautschuk Gummi Kunststoffe</i>. Published online 2025."},"year":"2025","user_id":"59363","department":[{"_id":"9"},{"_id":"321"},{"_id":"367"}],"_id":"59130","language":[{"iso":"eng"}],"keyword":["Rheologie","Viskosität","Wandgleiten"],"type":"journal_article","publication":"KGK Kautschuk Gummi Kunststoffe","status":"public"},{"_id":"59176","department":[{"_id":"15"},{"_id":"299"}],"user_id":"99022","article_type":"original","article_number":"5","language":[{"iso":"ger"}],"publication":"Zeitschrift für Didaktik der Naturwissenschaften","type":"journal_article","abstract":[{"text":"Das fachdidaktische Wissen (FDW) stellt eine wichtige Komponente des Professionswissens von (angehenden) Lehrkräften dar. Es liegen bereits empirische Forschungsergebnisse zu Einflussfaktoren und zur Entwicklung des FDW sowie zur Bedeutung des FDW als Ganzem für Professionswissen und Qualität professioneller Handlungen vor. Für eine detailliertere Forschung zur Zusammenhangsstruktur zwischen FDW und der Performanz in prototypischen Handlungssituationen sind darüber hinaus differenziertere empirisch begründete Beschreibungen der inneren Struktur des FDW notwendig. Bisher sind entsprechende Ansätze allerdings zumeist primär theoretisch-normativ begründet oder auf hierarchische Betrachtungen beschränkt. Im vorliegenden Beitrag wird daher ein Ansatz zur nicht-hierarchischen datenbasierten Beschreibung latenter Kompetenzprofile des FDW orientiert an der Computational Grounded Theory vorgestellt. Dabei wird zunächst mithilfe eines Datensatzes von 846 Bearbeitungen des Physik-FDW-Testinstruments in überwiegend offenem Antwortformat aus dem Projekt ProfiLe-P+ eine latente Profilanalyse zur Untersuchung latenter FDW-Profile unter Fokus auf kognitive Anforderungen als empirisch trennbare Subskalen des FDW durchgeführt. Mithilfe von Topic Modeling werden anschließend Tendenzen in der Sprachnutzung der FDW-Profile untersucht. Um die Ergebnisse im Sinne der Computational Grounded Theory durch den Nachweis latenter Zusammenhänge zwischen den Testantworten der Proband:innen und der FDW-Profil-Zuordnung zu bestätigen, wird im Anschluss ein Machine-Learning-basiertes System zur automatisierten Zuordnung von Testbearbeitungen zu den FDW-Profilen erstellt. Es zeigen sich vier latente Kompetenzprofile mit nicht-hierarchischem Charakter. In einer längsschnittlichen Betrachtung wird abschließend die Entwicklung von Proband:innen im Kontext dieser FDW-Profile dargestellt. Die Ergebnisse bieten Ansatzmöglichkeiten zukünftig Untersuchungen der Zusammenhänge einzelner FDW-Komponenten und beispielsweise gezeigter Handlungsqualität auf Detailebene zu untersuchen.","lang":"ger"}],"status":"public","publisher":"Springer Science and Business Media LLC","date_updated":"2025-03-28T03:06:21Z","volume":31,"author":[{"full_name":"Zeller, Jannis","id":"99022","orcid":"0000-0002-1834-5520","last_name":"Zeller","first_name":"Jannis"},{"id":"429","full_name":"Riese, Josef","last_name":"Riese","orcid":"0000-0003-2927-2619","first_name":"Josef"}],"date_created":"2025-03-28T03:02:55Z","title":"Machine-Learning basierte Analyse von latenten Profilen des physikdidaktischen Wissens Machine-Learning-Based Analysis of Latent Profiles in Physics PCK","doi":"10.1007/s40573-025-00181-y","publication_identifier":{"issn":["0949-1147","2197-988X"]},"publication_status":"published","year":"2025","intvolume":"        31","citation":{"ama":"Zeller J, Riese J. Machine-Learning basierte Analyse von latenten Profilen des physikdidaktischen Wissens Machine-Learning-Based Analysis of Latent Profiles in Physics PCK. <i>Zeitschrift für Didaktik der Naturwissenschaften</i>. 2025;31. doi:<a href=\"https://doi.org/10.1007/s40573-025-00181-y\">10.1007/s40573-025-00181-y</a>","chicago":"Zeller, Jannis, and Josef Riese. “Machine-Learning basierte Analyse von latenten Profilen des physikdidaktischen Wissens Machine-Learning-Based Analysis of Latent Profiles in Physics PCK.” <i>Zeitschrift für Didaktik der Naturwissenschaften</i> 31 (2025). <a href=\"https://doi.org/10.1007/s40573-025-00181-y\">https://doi.org/10.1007/s40573-025-00181-y</a>.","ieee":"J. Zeller and J. Riese, “Machine-Learning basierte Analyse von latenten Profilen des physikdidaktischen Wissens Machine-Learning-Based Analysis of Latent Profiles in Physics PCK,” <i>Zeitschrift für Didaktik der Naturwissenschaften</i>, vol. 31, Art. no. 5, 2025, doi: <a href=\"https://doi.org/10.1007/s40573-025-00181-y\">10.1007/s40573-025-00181-y</a>.","apa":"Zeller, J., &#38; Riese, J. (2025). 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Riese, Zeitschrift für Didaktik der Naturwissenschaften 31 (2025).","bibtex":"@article{Zeller_Riese_2025, title={Machine-Learning basierte Analyse von latenten Profilen des physikdidaktischen Wissens Machine-Learning-Based Analysis of Latent Profiles in Physics PCK}, volume={31}, DOI={<a href=\"https://doi.org/10.1007/s40573-025-00181-y\">10.1007/s40573-025-00181-y</a>}, number={5}, journal={Zeitschrift für Didaktik der Naturwissenschaften}, publisher={Springer Science and Business Media LLC}, author={Zeller, Jannis and Riese, Josef}, year={2025} }"}},{"issue":"2024/25","citation":{"ieee":"M. M. Korbmacher, “Bewusste Brüche. Ein Gespräch mit Christian Gerhaher über Gustav Mahlers ‘Wunderhorn’-Lieder,” <i>Semper Magazin</i>, vol. 3, no. 2024/25, 2025.","chicago":"Korbmacher, Melissa Maria. “Bewusste Brüche. Ein Gespräch mit Christian Gerhaher über Gustav Mahlers ‘Wunderhorn’-Lieder.” <i>Semper Magazin</i>, 2025.","ama":"Korbmacher MM. Bewusste Brüche. 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Ein Gespräch mit Christian Gerhaher über Gustav Mahlers \"Wunderhorn\"-Lieder","type":"newspaper_article","publication":"Semper Magazin","status":"public","user_id":"105258","publication_date":"2025-02-13","_id":"59174","language":[{"iso":"ger"}]},{"user_id":"21671","department":[{"_id":"526"}],"_id":"59182","alternative_title":["Proceedings of the 18th International Conference on Wirtschaftsinformatik, Paderborn, Germany, 2023, Vol. 3"],"language":[{"iso":"eng"}],"type":"book_editor","status":"public","editor":[{"first_name":"Daniel","id":"59677","full_name":"Beverungen, Daniel","last_name":"Beverungen"},{"full_name":"Lehrer, Christiane","last_name":"Lehrer","first_name":"Christiane"},{"id":"72744","full_name":"Trier, Matthias","last_name":"Trier","first_name":"Matthias"}],"date_created":"2025-03-28T14:53:09Z","date_updated":"2025-03-28T14:54:46Z","publisher":"Springer Nature Switzerland","doi":"10.1007/978-3-031-80125-9","title":"Transforming the Digitally Sustainable Enterprise","publication_status":"published","publication_identifier":{"isbn":["9783031801242","9783031801259"],"issn":["2195-4968","2195-4976"]},"citation":{"ama":"Beverungen D, Lehrer C, Trier M, eds. <i>Transforming the Digitally Sustainable Enterprise</i>. 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W.G. Sebald und die Literatur der Gegenwart</i>. ; 2025:55-76."},"status":"public","page":"55-76","publication_status":"published","type":"book_chapter","publication":"Traditionen des Pathos? W.G. Sebald und die Literatur der Gegenwart","title":"Sich in den Wald schlagen, mitten hinein. Pathetisch-heroische Figurationen von ‚Heimkehr‘ und ‚Waldgang‘ bei Wolfgang Büscher und Neo Rauch","language":[{"iso":"ger"}],"date_updated":"2025-03-31T07:48:11Z","_id":"58804","date_created":"2025-02-24T09:16:24Z","user_id":"610","author":[{"first_name":"Claudia","last_name":"Öhlschläger","id":"610","full_name":"Öhlschläger, Claudia"}]},{"status":"public","publication":"KulturPoetik. Zeitschrift für kulturgeschichtliche Literaturwissenschaft/Journal for Cultural Poetics","type":"journal_article","language":[{"iso":"ger"}],"_id":"55800","user_id":"610","year":"2025","intvolume":"        25","page":"128-151","citation":{"apa":"Öhlschläger, C. (2025). „Lob der Puppe\". 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Petzke, M. Scholtysik, C. Koldewey, R. Dumitrescu, in: Springer Proceedings in Business and Economics, Springer Nature Switzerland, Cham, 2025.","ama":"Rasor A, Petzke LI, Scholtysik M, Koldewey C, Dumitrescu R. Framework for the Business Transformation Towards the Circular Economy: A Systematic Literature Review. In: <i>Springer Proceedings in Business and Economics</i>. Springer Nature Switzerland; 2025. doi:<a href=\"https://doi.org/10.1007/978-3-031-72490-9_18\">10.1007/978-3-031-72490-9_18</a>","ieee":"A. Rasor, L. I. Petzke, M. Scholtysik, C. Koldewey, and R. Dumitrescu, “Framework for the Business Transformation Towards the Circular Economy: A Systematic Literature Review,” in <i>Springer Proceedings in Business and Economics</i>, Cham: Springer Nature Switzerland, 2025.","chicago":"Rasor, Anja, Lisa Irene Petzke, Michel Scholtysik, Christian Koldewey, and Roman Dumitrescu. “Framework for the Business Transformation Towards the Circular Economy: A Systematic Literature Review.” In <i>Springer Proceedings in Business and Economics</i>. Cham: Springer Nature Switzerland, 2025. <a href=\"https://doi.org/10.1007/978-3-031-72490-9_18\">https://doi.org/10.1007/978-3-031-72490-9_18</a>."},"year":"2025","place":"Cham","publication_status":"published","publication_identifier":{"isbn":["9783031724893","9783031724909"],"issn":["2198-7246","2198-7254"]},"quality_controlled":"1","doi":"10.1007/978-3-031-72490-9_18","title":"Framework for the Business Transformation Towards the Circular Economy: A Systematic Literature Review","author":[{"first_name":"Anja","last_name":"Rasor","id":"34415","full_name":"Rasor, Anja"},{"last_name":"Petzke","full_name":"Petzke, Lisa Irene","id":"63192","first_name":"Lisa Irene"},{"last_name":"Scholtysik","id":"50562","full_name":"Scholtysik, Michel","first_name":"Michel"},{"first_name":"Christian","last_name":"Koldewey","orcid":"https://orcid.org/0000-0001-7992-6399","full_name":"Koldewey, Christian","id":"43136"},{"first_name":"Roman","full_name":"Dumitrescu, Roman","id":"16190","last_name":"Dumitrescu"}],"date_created":"2025-03-31T10:18:19Z","publisher":"Springer Nature Switzerland","date_updated":"2025-04-01T07:51:04Z","status":"public","abstract":[{"lang":"eng","text":"In the face of climate change and growing sustainability awareness, industrial companies are at a pivotal point in transforming from a linear to a circular economy (CE) model. Yet, aligning their business with the principles of the CE is a challenging task. Utilizing a systematic literature review (SLR) and thematic analysis a framework for the business transformation towards the CE has been developed. It considers the dimensions product, business strategy, corporate management, and value chain. The circular business transformation (CBT) framework includes incentives for entering the CE, fields of action, design options, and associated challenges. For researchers, it provides a comprehensive overview and serves as a basis for in-depth studies of each dimension of CBT. Furthermore, it acts as a practical guide that enables industrial companies to strategically navigate through the complexity of the CBT and to effectively design it."}],"type":"book_chapter","publication":"Springer Proceedings in Business and Economics","language":[{"iso":"eng"}],"keyword":["Circular Economy","Circularity","Holistic View","Circular Transformation","Circular Management"],"user_id":"34415","_id":"59217"},{"volume":14,"author":[{"first_name":"Kirsten","full_name":"Schlegel-Matthies, Kirsten","last_name":"Schlegel-Matthies"}],"date_updated":"2025-04-01T08:53:14Z","doi":"10.3224/hibifo.v14i1.05","publication_identifier":{"issn":["2193-8806","2196-1662"]},"publication_status":"published","intvolume":"        14","page":"49-63","citation":{"ieee":"K. Schlegel-Matthies, “Essen in der Vielfalt – Esskultur und Nahrungszubereitung,” <i>HiBiFo – Haushalt in Bildung &#38;amp; Forschung</i>, vol. 14, no. 1, pp. 49–63, 2025, doi: <a href=\"https://doi.org/10.3224/hibifo.v14i1.05\">10.3224/hibifo.v14i1.05</a>.","chicago":"Schlegel-Matthies, Kirsten. “Essen in der Vielfalt – Esskultur und Nahrungszubereitung.” <i>HiBiFo – Haushalt in Bildung &#38;amp; Forschung</i> 14, no. 1 (2025): 49–63. <a href=\"https://doi.org/10.3224/hibifo.v14i1.05\">https://doi.org/10.3224/hibifo.v14i1.05</a>.","ama":"Schlegel-Matthies K. Essen in der Vielfalt – Esskultur und Nahrungszubereitung. <i>HiBiFo – Haushalt in Bildung &#38;amp; Forschung</i>. 2025;14(1):49-63. doi:<a href=\"https://doi.org/10.3224/hibifo.v14i1.05\">10.3224/hibifo.v14i1.05</a>","apa":"Schlegel-Matthies, K. (2025). Essen in der Vielfalt – Esskultur und Nahrungszubereitung. <i>HiBiFo – Haushalt in Bildung &#38;amp; Forschung</i>, <i>14</i>(1), 49–63. <a href=\"https://doi.org/10.3224/hibifo.v14i1.05\">https://doi.org/10.3224/hibifo.v14i1.05</a>","mla":"Schlegel-Matthies, Kirsten. “Essen in der Vielfalt – Esskultur und Nahrungszubereitung.” <i>HiBiFo – Haushalt in Bildung &#38;amp; Forschung</i>, vol. 14, no. 1, Verlag Barbara Budrich GmbH, 2025, pp. 49–63, doi:<a href=\"https://doi.org/10.3224/hibifo.v14i1.05\">10.3224/hibifo.v14i1.05</a>.","bibtex":"@article{Schlegel-Matthies_2025, title={Essen in der Vielfalt – Esskultur und Nahrungszubereitung}, volume={14}, DOI={<a href=\"https://doi.org/10.3224/hibifo.v14i1.05\">10.3224/hibifo.v14i1.05</a>}, number={1}, journal={HiBiFo – Haushalt in Bildung &#38;amp; Forschung}, publisher={Verlag Barbara Budrich GmbH}, author={Schlegel-Matthies, Kirsten}, year={2025}, pages={49–63} }","short":"K. Schlegel-Matthies, HiBiFo – Haushalt in Bildung &#38;amp; Forschung 14 (2025) 49–63."},"department":[{"_id":"35"},{"_id":"17"},{"_id":"22"},{"_id":"396"}],"user_id":"459","_id":"59229","type":"journal_article","status":"public","date_created":"2025-04-01T08:50:40Z","publisher":"Verlag Barbara Budrich GmbH","title":"Essen in der Vielfalt – Esskultur und Nahrungszubereitung","issue":"1","year":"2025","language":[{"iso":"ger"}],"publication":"HiBiFo – Haushalt in Bildung &amp; Forschung","abstract":[{"lang":"eng","text":"<jats:p>Die Nahrungszubereitung als zentraler Bestandteil eines haushaltsbezogenen Unterrichts dient der Anbahnung von Kompetenzen für die Zubereitung von Speisen und die Gestaltung von Mahlzeiten unter Berücksichtigung von Gesundheit und Nachhaltigkeit. Ebenso bedeutsam, jedoch häufig vernachlässigt, ist die Berücksichtigung unterschiedlicher Esskulturen, lebensweltlicher Erfahrungen und sozioökonomischer Hintergründe der Lernenden.</jats:p>"}]},{"type":"working_paper","abstract":[{"lang":"eng","text":"This study investigates how strategic interactions between corporate tax planning and tax enforcement are affected by two policy instruments: strengthening tax enforcement by increasing the number of specialized enforcement staff and improving tax audit technologies. I employ an economic model with a board of director's investment in a Tax Control Framework (TCF) and a tax manager's tax planning effort jointly shaping corporate tax planning and a tax auditor's technology-based audit decision. I show that the board only invests in the TCF when the enforcement environment is sufficiently strict, because it trades-off the costs and benefits of tax planning. Since strengthening tax enforcement decreases tax planning effort, the result can be less investment in a TCF in a strict enforcement environment, implying that TCF investment and enforcement can be strategic substitutes. Strikingly, I identify conditions under which improvements in tax audit technology increase corporate tax planning and impair tax audit efficiency, due to a crowding-out of audit incentives. This result contradicts the view that improving audit technologies is universally effective, particularly in tax authorities with adequate staffing."}],"status":"public","_id":"59096","series_title":"TRR 266 Accounting for Transparency Working Paper Series No. 186","user_id":"74000","department":[{"_id":"187"}],"language":[{"iso":"eng"}],"year":"2025","citation":{"apa":"Dyck, D. (2025). <i>Corporate Tax Planning and Enforcement</i>. <a href=\"https://doi.org/10.2139/ssrn.5186857\">https://doi.org/10.2139/ssrn.5186857</a>","mla":"Dyck, Daniel. <i>Corporate Tax Planning and Enforcement</i>. 2025, doi:<a href=\"https://doi.org/10.2139/ssrn.5186857\">10.2139/ssrn.5186857</a>.","bibtex":"@book{Dyck_2025, series={TRR 266 Accounting for Transparency Working Paper Series No. 186}, title={Corporate Tax Planning and Enforcement}, DOI={<a href=\"https://doi.org/10.2139/ssrn.5186857\">10.2139/ssrn.5186857</a>}, author={Dyck, Daniel}, year={2025}, collection={TRR 266 Accounting for Transparency Working Paper Series No. 186} }","short":"D. Dyck, Corporate Tax Planning and Enforcement, 2025.","ama":"Dyck D. <i>Corporate Tax Planning and Enforcement</i>.; 2025. doi:<a href=\"https://doi.org/10.2139/ssrn.5186857\">10.2139/ssrn.5186857</a>","chicago":"Dyck, Daniel. <i>Corporate Tax Planning and Enforcement</i>. TRR 266 Accounting for Transparency Working Paper Series No. 186, 2025. <a href=\"https://doi.org/10.2139/ssrn.5186857\">https://doi.org/10.2139/ssrn.5186857</a>.","ieee":"D. Dyck, <i>Corporate Tax Planning and Enforcement</i>. 2025."},"date_updated":"2025-04-01T11:49:32Z","oa":"1","date_created":"2025-03-25T08:51:57Z","author":[{"first_name":"Daniel","last_name":"Dyck","id":"83379","full_name":"Dyck, Daniel"}],"title":"Corporate Tax Planning and Enforcement","main_file_link":[{"open_access":"1"}],"doi":"10.2139/ssrn.5186857"},{"publication_status":"published","place":"Paderborn","year":"2025","citation":{"ama":"Clausing L. <i>ReconOS64 - Hardware-Software Multithreading for Heterogeneous Platform FPGAs</i>.; 2025. doi:<a href=\"https://doi.org/10.17619/UNIPB/1-2216\">10.17619/UNIPB/1-2216</a>","ieee":"L. Clausing, <i>ReconOS64 - Hardware-Software Multithreading for Heterogeneous Platform FPGAs</i>. Paderborn, 2025.","chicago":"Clausing, Lennart. <i>ReconOS64 - Hardware-Software Multithreading for Heterogeneous Platform FPGAs</i>. Paderborn, 2025. <a href=\"https://doi.org/10.17619/UNIPB/1-2216\">https://doi.org/10.17619/UNIPB/1-2216</a>.","apa":"Clausing, L. (2025). <i>ReconOS64 - Hardware-Software Multithreading for Heterogeneous Platform FPGAs</i>. <a href=\"https://doi.org/10.17619/UNIPB/1-2216\">https://doi.org/10.17619/UNIPB/1-2216</a>","bibtex":"@book{Clausing_2025, place={Paderborn}, title={ReconOS64 - Hardware-Software Multithreading for Heterogeneous Platform FPGAs}, DOI={<a href=\"https://doi.org/10.17619/UNIPB/1-2216\">10.17619/UNIPB/1-2216</a>}, author={Clausing, Lennart}, year={2025} }","short":"L. Clausing, ReconOS64 - Hardware-Software Multithreading for Heterogeneous Platform FPGAs, Paderborn, 2025.","mla":"Clausing, Lennart. <i>ReconOS64 - Hardware-Software Multithreading for Heterogeneous Platform FPGAs</i>. 2025, doi:<a href=\"https://doi.org/10.17619/UNIPB/1-2216\">10.17619/UNIPB/1-2216</a>."},"date_updated":"2025-04-01T17:24:18Z","oa":"1","author":[{"last_name":"Clausing","orcid":"0000-0003-3789-6034","id":"74287","full_name":"Clausing, Lennart","first_name":"Lennart"}],"supervisor":[{"id":"398","full_name":"Platzner, Marco","last_name":"Platzner","first_name":"Marco"}],"date_created":"2025-04-01T17:00:31Z","title":"ReconOS64 - Hardware-Software Multithreading for Heterogeneous Platform FPGAs","doi":"10.17619/UNIPB/1-2216","main_file_link":[{"url":"https://nbn-resolving.org/urn:nbn:de:hbz:466:2-54271","open_access":"1"}],"type":"dissertation","abstract":[{"text":"Heterogeneous computing devices comprising multiple processing systems combined with a programmable logic like an FPGA have become increasingly popular. Developing and runtime managing these heterogeneous platform devices, however, still poses multiple challenges. The programming paradigms for hardware and software applications fundamentally differ, while the runtime management requires additional attention. The first steps towards unifying design flows have been taken by creating high-level synthesis tools. However, these toolsfocus on the design process and lack runtime management features. FPGA operating systems aim to close this gap by providing runtime management features and build tools. ReconOS, as an example of an FPGA operating system, allows bridging the hardware-software gap by integrating hardware-located computation units as threads into a host operating system, allowing for familiar inter-thread programming paradigms to be extended to FPGAs. This thesis presents ReconOS64, a successor and fork of ReconOS, aiming at modern 64-bit platform systems-on-chip. Besides establishing support for this platform and incorporating new system generation processes, ReconOS64 provides additional features for both development and runtime management. By providing a flexible grouping mechanism for hardware-located threads, partial reconfiguration for exchanging individual threads at runtime is simplified. Further runtime flexibility was achieved by implementing a multi-clock architecture, allowing individual groups of threads to be executed at different frequencies, which can be adapted during runtime with a low reconfiguration overhead. In addition, this thesis provides an overview of further development approaches on various systems based on ReconOS64 and ReconOS.","lang":"eng"},{"lang":"ger","text":"Heterogene Architekturen, welche aus mehreren Recheneinheiten im Verbund mit einer programmierbaren Logik bestehen, gewinnen zunehmend an Verbreitung. Die Entwicklungsprozesse sowie die Steuerung solcher heterogenen Umgebungen stellen jedoch nach wie vor eine Herausforderung dar. Die Programmiertechniken für Hardware- und Software-Anwendungen unterscheiden sich bereits grundlegend; zudem benötigt die Steuerung zusätzliche Aufmerksamkeit. Die Verwendung von Hochsprachen-Synthesewerkzeugen (High-Level Synthesis) für das Hardwaredesign stellen einen ersten Schritt hin zu einem einheitlichen Entwurfsprozess dar. Allerdings beschränkt sich deren Einsatz auf den Designprozess, während das Management zur Laufzeit keine Berücksichtigung findet.FPGA-Betriebssysteme versuchen diese Lücke durch die Bereitstellung von Management- und Entwurfswerkzeugen zu schließen. Ein Beispiel für ein solches System ist ReconOS, welches die Hardware-Software-Interaktion durch Anbindung von hardwareseitigen Recheneinheiten als Threads in einem Host-Betriebssystem ermöglicht. Dadurch werden die aus der Softwareentwicklung bekannten Methoden zur Kommunikation zwischen mehreren Threads auf FPGA-Systeme ausgeweitet.Diese Arbeit stellt ReconOS64 vor, welches als Ableger von ReconOS auf aktuellen 64-bit Systemen verwendet werden kann. Neben der Unterstützung aktueller Plattformen sowie der Einrichtung eines neuen Designprozesses werden durch ReconOS64 zusätzliche Möglichkeiten sowohl zur Entwicklung wie auch zum Laufzeitmanagement geschaffen. Durch flexible Gruppierungen von Hardware-basierten Threads wird die Verwendung partieller Rekonfiguration zum Austausch einzelner Threads zur Laufzeit vereinfacht. Zudem erhöht die Entwicklung einer Multi-Taktsignal-Architektur die Flexibilität zur Laufzeit, da hierdurch einzelne Gruppen von Threads mit unterschiedlichen Taktsignalen versorgt werden können, welche zudem zurLaufzeit mit geringer Unterbrechungszeit verändert werden können.Zusätzlich werden im Rahmen dieser Arbeit weitere Entwicklungsprojekte auf verschiedenen Systemen für ReconOS64 und ReconOS vorgestellt."}],"status":"public","_id":"59232","user_id":"74287","language":[{"iso":"eng"}]},{"publication_status":"published","citation":{"mla":"Grabo, Matti. <i>Modeling and Optimization of Energy System Components Equipped with Phase Change Materials</i>. 2025, doi:<a href=\"https://doi.org/10.17619/UNIPB/1-2199\">10.17619/UNIPB/1-2199</a>.","short":"M. Grabo, Modeling and Optimization of Energy System Components Equipped with Phase Change Materials, Paderborn, 2025.","bibtex":"@book{Grabo_2025, place={Paderborn}, title={Modeling and optimization of energy system components equipped with phase change materials}, DOI={<a href=\"https://doi.org/10.17619/UNIPB/1-2199\">10.17619/UNIPB/1-2199</a>}, author={Grabo, Matti}, year={2025} }","apa":"Grabo, M. (2025). <i>Modeling and optimization of energy system components equipped with phase change materials</i>. <a href=\"https://doi.org/10.17619/UNIPB/1-2199\">https://doi.org/10.17619/UNIPB/1-2199</a>","chicago":"Grabo, Matti. <i>Modeling and Optimization of Energy System Components Equipped with Phase Change Materials</i>. Paderborn, 2025. <a href=\"https://doi.org/10.17619/UNIPB/1-2199\">https://doi.org/10.17619/UNIPB/1-2199</a>.","ieee":"M. Grabo, <i>Modeling and optimization of energy system components equipped with phase change materials</i>. Paderborn, 2025.","ama":"Grabo M. <i>Modeling and Optimization of Energy System Components Equipped with Phase Change Materials</i>.; 2025. doi:<a href=\"https://doi.org/10.17619/UNIPB/1-2199\">10.17619/UNIPB/1-2199</a>"},"year":"2025","place":"Paderborn","supervisor":[{"full_name":"Kenig, Eugeny","id":"665","last_name":"Kenig","first_name":"Eugeny"}],"date_created":"2025-04-02T09:25:58Z","author":[{"first_name":"Matti","id":"66520","full_name":"Grabo, Matti","last_name":"Grabo"}],"date_updated":"2025-04-02T09:44:05Z","doi":"10.17619/UNIPB/1-2199","title":"Modeling and optimization of energy system components equipped with phase change materials","type":"dissertation","status":"public","abstract":[{"lang":"ger","text":"Diese Arbeit behandelt die Modellierung und Optimierung von mit Phasenwechselmaterialien (PCM) ausgestatteten, energietechnischen Komponenten anhand zweier Fallstudien. PCM sind Materialien, deren Phasenwechseleigenschaften während des Schmelzens und Erstarrens für Heiz- und Kühlzwecke genutzt werden. Zunächst werden die theoretischen Grundlagen zu Wärmeübertragungsproblemen mit Phasenwechsel erörtert und entsprechende numerische Lösungsmethoden diskutiert. Ein Modell für Phasenwechselvorgänge wird vorgestellt, welches anhand analytischer Lösungen validiert wurde und in den Fallstudien zum Einsatz kam. Für beide Fallstudien wird der Stand der Technik erörtert und die entsprechenden Forschungsfragen werden formuliert. Die erste Fallstudie behandelt PCM-integrierte Photovoltaikmodule und die zweite Festbett-Latentwärmespeicher, welche nicht-kugelförmiger PCM-Kapseln verwenden. Für beide Systeme wurden thermische Model-le entwickelt und anhand experimenteller Daten mit guter Genauigkeit validiert. Diese Modelle wurden in Parameterstudien eingesetzt, um optimierte Systemkonfigurationen zu identifizieren. Die vorgestellten Ergebnisse zeigen, dass ein PCM-Kühlkörper mit ausreichender Dicke und Wärmeleitfähigkeit den Wirkungsgrad und die Lebensdauer von Photovoltaikmodulen erheblich erhöht. Darüber hinaus verbessern PCM-Kapseln mit hoher Packungs-dichte und Oberfläche sowohl die volumenspezifische Speicherkapazität als auch die thermische Leistung von Festbett-Latentwärmespeichern."},{"lang":"eng","text":"This thesis explores the modeling and optimization of energy system components incorporating phase change materials (PCM) through two different case studies. PCM are materials whose phase change characteristics during melting and solidification are utilized for heating and cooling purposes. The theoretical foundations of heat transfer problems involving phase change, along with the relevant numerical solution methods, are discussed. A phase change model is presented, which was validated against analytical solutions and applied in the case studies. For both case studies, a review of the state of the art is provided, followed by the formulation of specific research problems. The first case study investigated PCM-enhanced photovoltaic modules, while the second focused on packed bed latent heat storages (PBLHS) utilizing non-spherical PCM capsules. Thermal models were developed for both systems and validated with good accuracy against experimental data. These models were employed in parameter studies to identify optimized system configurations. The presented results demonstrate that a PCM heat sink with sufficient thickness and thermal conductivity can significantly improve the efficiency and lifespan of photovoltaic modules. Furthermore, PCM capsules with both high packing density and surface area increase the volume-specific storage capacity and thermal power output of PBLHS."}],"department":[{"_id":"9"}],"user_id":"66520","_id":"59239","language":[{"iso":"eng"}],"keyword":["Heat transfer","PCM","numerical simulation","renewable energy","heat storage"]},{"status":"public","abstract":[{"lang":"eng","text":"In dieser Arbeit betrachten wir algorithmische Lösungen für fundamentale Probleme in modernen Kommunikationsnetzen. Im ersten Teil dieser Arbeit zeigen wir, wie man ein Overlay-Netzwerk mit Grades und Durchmesser O(log n) in O(log n) Runden ausgehend von einem beliebigen, schwach verbundenen Graphen konstruiert. Wir gehen von einem synchronen Kommunikationsnetz aus, in dem Knoten Nachrichten an alle Knoten senden können, deren Adresse sie kennen, und neue Verbindungen durch das Versenden dieser Adressen hergestellt werden können. Wenn der Ausgangsgraph des Netzwerks schwach zusammenhängend ist und einen konstanten Grad hat, dann konstruiert unser Algorithmus die gewünschte Topologie mit hoher Wahrscheinlichkeit in O(log n) Runden, wobei in jeder Runde nur O(log n) Nachrichten sendet und empfängt. Da das Problem nicht schneller gelöst werden kann als durch sogenanntes Pointer Doubling für O(log n) Runden (was sogar erfordern würde, dass jeder Knoten Ω(n) Bits kommuniziert), ist unser Algorithmus asymptotisch optimal. Außerdem zeigen wir, wie unser Algorithmus zur effizienten Lösung von Graphenproblemen im HYBRID modelverwendet werden kann. Motiviert durch die Idee, dass Knoten zwei verschiedene Arten der Kommunikation besitzen, nehmen wir an, dass die Kommunikation der Kanten unbeschränkt ist, während nur polylogarithmisch viele Nachrichten über Kanten gesendet werden können, die während der Ausführung eines Algorithmus etabliert wurden. Für einen (ungerichteten) Graphen G mit beliebigem Grad zeigen wir, wie man zusammenhängende Komponenten und einen Spannwald mit hoher Wahrscheinlichkeit in O(log n) Zeitberechnen kann. Außerdem zeigen wir, wie man ein MIS mit hoher Wahrscheinlichkeit in O(log ∆ + log log n), berechnet, wobei ∆ der Grad von G ist. Im zweiten Teil der Arbeit betrachten wir das Problem der Berechnung von kompakten Routing-Tabellen und Dekompositionen mit geringem Durchmesser für einen (gewichteten) Graphen G := (V, E, ℓ), der durch k kürzeste Wege separiert werden kann. Zu dieser Klasse von Graphen gehören planare Graphen, Graphen mit beschränkter Treewidth und Graphen, die einen festen Minor Kr ausschließen. Wir präsentieren Algorithmen im CONGEST- und im neuartigen HYBRID-Kommunikationsmodell, die in allen relevanten Parametern konkurrenzfähig sind:• Für einen gegebenen Parameter ϵ &gt; 0 berechnen wir ein Routing-Schema mit Stretch 1 + ϵ. Unser Schema berechnet Label der Größe Oe(kϵ−2) und wird in Oe(kϵ−3) Zeit im HYBRID-Modell, und Oe(kϵ−3· HD) Zeit in CONGEST. Dabei bezeichnet HD den Hopdurchmesser des Graphen.• Für einem Parameter D &gt; 0 unterteilt unser Algorithmus zur Dekomposition den Graphen in zusammenhängende Subgraphen mit starkem Durchmesser D. Eine Kante e ∈ E der Länge ℓe hat ihre Endpunkte in zwei verschieden Subgraphen mit der Wahrscheinlichkeit O(ℓe·log(k log n)/D). Die Dekomposition kann in Oe(k) Zeit im HYBRID-Modell und O˜(kHD) Zeit in CONGEST berechnet werden. Wir stellen verteilte und parallele Implementierungen von sequenziellen Divide-and-Conquer-Algorithmen vor, bei denen wir exakte kürzeste Pfade durch approximative kürzeste Pfade ersetzen. Im Gegensatz zu exakten Pfaden können diese in der verteilten und parallelen Umgebung effizient berechnet werden. Außerdem, zeigen wir, dass es ausreicht, anstelle der expliziten Berechnung von Vertex-Separatoren, einige zufällige Pfade begrenzter Länge zu wählen und die Separatoren um diese herum zu konstruieren. Schließlich stellen wir einen SetCover-Algorithmus für das Beeping-Modell vor. Unser Algorithmus läuft in O(k3) Zeit und hat eine erwartete Approximationsgüte von O(∆3/k log2 ∆). Der Wert k ∈ [3, log ∆] ist ein Parameter, mit dem wir Laufzeit gegen Approximationsgüte eintauschen können, ähnlich wie bei dem Algorithmus von Kuhn und Wattenhofer [PODC ’03]. Dieser Algorithmus kann erweitert werden, um das DominatingSet-Problem in der D-Nachbarschaft eines Graphen mittles eines verteiltes Algorithmus effizient zu lösen."},{"text":"This thesis considers algorithmic solutions to problems that arise in the theoretical study of modern communication networks, such ast he Internet. The thesis is divided into two main parts. In the first part of this thesis, we show how to construct an overlay network of degree O(log n) and diameter O(log n) in O(log n) time starting from an arbitrary weakly connected graph. We assume a synchronous communication network in which nodes can send messages to nodes they know the identifier of, and new connections can be established by sending node identifiers. If the initial network’s graph is weakly connected and has constant degree, then our algorithm constructs the desired topology with each node sending and receiving only O(log n) messages in each round in time O(log n), w.h.p. Since the problem cannot be solved faster than by using pointer jumping for O(log n) rounds (which would even require each node to communicate Ω(n) bits), our algorithm is asymptotically optimal. Additionally, we show how our algorithm can be used to efficiently solvegraph problems in the novel HYBRID model. Motivated by the idea that nodes possess two different modes of communication, we assume that communication of the initial edges is unrestricted, whereas only polylogarithmically many messages can be sent over edges that have been established throughout an algorithm’s execution. For an (undirected) graph G with arbitrary degree, we show how tocompute connected components and a spanning forest in O(log n) time, w.h.p. Furthermore, we show how to compute an MIS in timeO(log ∆ + log log n), w.h.p., where ∆ is the initial degree of G. In the second part of the thesis, we consider the problems of computing compact routing tables and low-diameter decompositions for a (weighted) graph G := (V, E, ℓ) that can be separated through k shortest paths. This class of graphs includes planar graphs, graphs of bounded treewidth, and graphs that exclude a fixed minor Kr. We present algorithms in the CONGEST and the novel HYBRID communication model that are competitive in all relevant parameters:• For a given parameter ϵ &gt; 0, we compute a routing scheme with stretch 1 + ϵ. Our scheme computes labels of size Oe(kϵ−2)and is computed in Oe(kϵ−3) time in the HYBRID model and Oe(kϵ−3· HD) time in CONGEST. Here, HD denotes thenetwork’s hop diameter.• Given a parameter D &gt; 0, our low-diameter decomposition algorithm divides the graph into connected subgraphs of strongdiameter D. An edge e ∈ E of length ℓe has endpoints in different subgraphs with probability O(ℓe·log(k log n)/D). The decomposition can be computed in Oe(k) time in the HYBRID model and O˜(kHD) time in CONGEST.Broadly speaking, we present distributed and parallel implementations of sequential divide-and-conquer algorithms where we replaceexact shortest paths with approximate shortest paths. In contrast to exact paths, these can be efficiently computed in the distributed and parallel setting. Further, and perhaps more importantly, we show that instead of explicitly computing vertex-separators to enable efficientparallelization of these algorithms, it suffices to sample a few random paths of bounded length and the nodes close to them. Finally, we present a SetCover algorithm in the Beeping model. Our algorithm runs in O(k3) time and has an expected approximation ratio ofO(∆3/k log2 ∆). The value k ∈ [3, log ∆] is a parameter that lets us trade runtime for approximation ratio similar to the celebrated algorithm by Kuhn and Wattenhofer [PODC ’03]. This algorithm can then be extended to effieciently solve the DominatingSet-problem in a graph’s D-neigborhood in a distributed fashion.","lang":"eng"}],"type":"dissertation","language":[{"iso":"eng"}],"extern":"1","user_id":"34727","_id":"59263","citation":{"ieee":"T. Götte, <i>Distributed Algorithms for Modern Communication Networks</i>. LibreCat University, 2025.","chicago":"Götte, Thorsten. <i>Distributed Algorithms for Modern Communication Networks</i>. LibreCat University, 2025. <a href=\"https://doi.org/10.17619/UNIPB/1-2217\">https://doi.org/10.17619/UNIPB/1-2217</a>.","ama":"Götte T. <i>Distributed Algorithms for Modern Communication Networks</i>. LibreCat University; 2025. doi:<a href=\"https://doi.org/10.17619/UNIPB/1-2217\">10.17619/UNIPB/1-2217</a>","apa":"Götte, T. (2025). <i>Distributed Algorithms for Modern Communication Networks</i>. LibreCat University. <a href=\"https://doi.org/10.17619/UNIPB/1-2217\">https://doi.org/10.17619/UNIPB/1-2217</a>","bibtex":"@book{Götte_2025, title={Distributed Algorithms for Modern Communication Networks}, DOI={<a href=\"https://doi.org/10.17619/UNIPB/1-2217\">10.17619/UNIPB/1-2217</a>}, publisher={LibreCat University}, author={Götte, Thorsten}, year={2025} }","mla":"Götte, Thorsten. <i>Distributed Algorithms for Modern Communication Networks</i>. LibreCat University, 2025, doi:<a href=\"https://doi.org/10.17619/UNIPB/1-2217\">10.17619/UNIPB/1-2217</a>.","short":"T. Götte, Distributed Algorithms for Modern Communication Networks, LibreCat University, 2025."},"year":"2025","doi":"10.17619/UNIPB/1-2217","title":"Distributed Algorithms for Modern Communication Networks","date_created":"2025-04-02T14:02:32Z","author":[{"full_name":"Götte, Thorsten","last_name":"Götte","first_name":"Thorsten"}],"date_updated":"2025-04-02T14:07:48Z","publisher":"LibreCat University"}]