[{"_id":"56888","language":[{"iso":"eng"}],"user_id":"38556","author":[{"last_name":"Gruchel","first_name":"Nicole","full_name":"Gruchel, Nicole","id":"38556"},{"id":"78797","first_name":"Ricarda","last_name":"Kurock","full_name":"Kurock, Ricarda"},{"full_name":"Buhl, Heike M.","first_name":"Heike M.","last_name":"Buhl"}],"conference":{"location":"Wien","name":"Deutsche Gesellschaft für Psychologie","start_date":"2024-09-26","end_date":"2024-09-19"},"status":"public","year":"2024","title":"Digitale häusliche Lernumwelt – Veränderungen der elterlichen Unterstützung bei der informationsorientierten Internetnutzung von Fünft- und Siebtklässler*innen ","date_updated":"2024-11-06T10:06:43Z","date_created":"2024-11-06T08:35:04Z","department":[{"_id":"427"}],"type":"conference","citation":{"bibtex":"@inproceedings{Gruchel_Kurock_Buhl_2024, title={Digitale häusliche Lernumwelt – Veränderungen der elterlichen Unterstützung bei der informationsorientierten Internetnutzung von Fünft- und Siebtklässler*innen }, author={Gruchel, Nicole and Kurock, Ricarda and Buhl, Heike M.}, year={2024} }","chicago":"Gruchel, Nicole, Ricarda Kurock, and Heike M. Buhl. “Digitale Häusliche Lernumwelt – Veränderungen Der Elterlichen Unterstützung Bei Der Informationsorientierten Internetnutzung von Fünft- Und Siebtklässler*innen ,” 2024.","ama":"Gruchel N, Kurock R, Buhl HM. Digitale häusliche Lernumwelt – Veränderungen der elterlichen Unterstützung bei der informationsorientierten Internetnutzung von Fünft- und Siebtklässler*innen . In: ; 2024.","short":"N. Gruchel, R. Kurock, H.M. Buhl, in: 2024.","ieee":"N. Gruchel, R. Kurock, and H. M. Buhl, “Digitale häusliche Lernumwelt – Veränderungen der elterlichen Unterstützung bei der informationsorientierten Internetnutzung von Fünft- und Siebtklässler*innen ,” presented at the Deutsche Gesellschaft für Psychologie, Wien, 2024.","mla":"Gruchel, Nicole, et al. Digitale Häusliche Lernumwelt – Veränderungen Der Elterlichen Unterstützung Bei Der Informationsorientierten Internetnutzung von Fünft- Und Siebtklässler*innen . 2024.","apa":"Gruchel, N., Kurock, R., & Buhl, H. M. (2024). Digitale häusliche Lernumwelt – Veränderungen der elterlichen Unterstützung bei der informationsorientierten Internetnutzung von Fünft- und Siebtklässler*innen . Deutsche Gesellschaft für Psychologie, Wien."},"popular_science":"1","quality_controlled":"1","abstract":[{"lang":"ger","text":"Elterliche Unterstützung bei der Internetnutzung geriet durch die Covid-19-Pandemie stärker in den Fokus, auch wenn diese bereits vor der Pandemie aufgrund der nur langsam fortschreitenden Digitalisierung von Schulen elementar war. Neben der Relevanz der Quantität elterlicher Unterstützung ist in Untersuchungen zur Rolle der Familie für das Lernen mit digitalen Medien auch die Qualität von zentraler Bedeutung (Bonanati et al., 2022). Dabei erwies sich allgemein in der Forschung zur elterlichen Hausaufgabenunterstützung eine autonomieunterstützende, strukturgebende und zugleich wertschätzende Instruktion als besonders gewinnbringend (Dumont et al., 2014). Zudem ist bekannt, dass die elterliche Unterstützung unter anderem auf Grund der steigenden Komplexität der Unterrichtsinhalte, der steigenden Selbstständigkeit sowie dem zunehmenden Autonomiebedürfnis der Lernenden im Schulverlauf abnimmt (Luplow & Schneider, 2018). Wie sich die elterliche Unterstützung bei der informationsorientierten Internetnutzung von Kindern über die Zeit und mit Beginn der Covid-19-Pandemie verändert, ist relevant für den Förderkontext, bislang aber nur wenig betrachtet worden und deshalb Ziel der vorliegenden Untersuchung.\r\nGrundlage der vorliegenden Untersuchung sind längsschnittliche Daten von 395 Schüler*innen sowie 191 Eltern, die im Jahr 2019/2020 in fünften Klassen (~10-11 Jahre) und im Jahr 2021/22 in siebten Klassen (~12-13 Jahre) erhoben wurden. \r\nDie Ergebnisse zeigten eine Abnahme der Quantität elterlicher Instruktion von der fünften zur siebten Jahrgansstufe sowohl aus Eltern- als auch aus Kinderperspektive. Hinsichtlich der Qualität elterlicher Unterstützung berichteten Eltern in der 7. Klassenstufe von weniger autonomieunterstützender Instruktion, während Kinder der 7. Klassenstufe von einer weniger autonomieunterstützenden und wertschätzenden Instruktion berichteten. Weitere Ergebnisse werden in dem Vortrag diskutiert."}]},{"citation":{"ieee":"S. Autsch, Micro Archives. Künstlerische Arbeiten 2019-2024. . Berlin: Edition Imorde , 2024.","apa":"Autsch, S. (2024). Micro Archives. Künstlerische Arbeiten 2019-2024. . Edition Imorde .","mla":"Autsch, Sabiene. Micro Archives. Künstlerische Arbeiten 2019-2024. . Edition Imorde , 2024.","bibtex":"@book{Autsch_2024, place={Berlin}, title={Micro Archives. Künstlerische Arbeiten 2019-2024. }, publisher={Edition Imorde }, author={Autsch, Sabiene}, year={2024} }","chicago":"Autsch, Sabiene. Micro Archives. Künstlerische Arbeiten 2019-2024. . Berlin: Edition Imorde , 2024.","short":"S. Autsch, Micro Archives. Künstlerische Arbeiten 2019-2024. , Edition Imorde , Berlin, 2024.","ama":"Autsch S. Micro Archives. Künstlerische Arbeiten 2019-2024. . Edition Imorde ; 2024."},"place":"Berlin","date_created":"2025-01-22T13:54:47Z","type":"misc","status":"public","year":"2024","title":"Micro Archives. Künstlerische Arbeiten 2019-2024. ","author":[{"id":"15","last_name":"Autsch","first_name":"Sabiene","full_name":"Autsch, Sabiene"}],"date_updated":"2025-01-22T13:54:55Z","publication_status":"published","_id":"58325","language":[{"iso":"ger"}],"publisher":"Edition Imorde ","user_id":"89836","alternative_title":["Mit Texten von Jens Schröter und Michael Kröger. 80 farbige Abb. [= Katalog anlässlich der gleichnamigen Ausstellung im Kunstverein Paderborn. 22. März bis 5. Mai 2024]."]},{"department":[{"_id":"157"}],"type":"preprint","date_created":"2025-01-30T14:30:09Z","abstract":[{"lang":"eng","text":"This study presents a numerical approach using a 3D finite element model to quantify the remaining clamp load of a plastic nut joint after a specific time. The viscoelastic relaxation of a thermoplastic nut, which is predominantly screwed on a welding stud, is described by a material card using Prony Series. Prony Series are derived from experimental Dynamical Mechanical Analysis with different moisture and fiber contents of the thermoplastic. Since plastic nuts usually do not have preformed threads, the increased temperatures and resulting stresses from the thread-forming process are considered in the simulation. Firstly, the FE model is verified by substrate stress relaxation tests. Subsequently, experimental clamp load measurements with miniature compression load cells verify the clamp load prediction. Finally, the developed model is used to analyze the clamp load distribution within the threads"}],"citation":{"short":"J. Wippermann, G. Meschut, (2024).","chicago":"Wippermann, Jan, and Gerson Meschut. “Numerical Modeling of Clamp Load Relaxation of Plastic Nuts under Varying Moisture and Fiber Content.” Springer Science and Business Media LLC, 2024.","ieee":"J. Wippermann and G. Meschut, “Numerical modeling of clamp load relaxation of plastic nuts under varying moisture and fiber content.” Springer Science and Business Media LLC, 2024.","apa":"Wippermann, J., & Meschut, G. (2024). Numerical modeling of clamp load relaxation of plastic nuts under varying moisture and fiber content. Springer Science and Business Media LLC.","bibtex":"@article{Wippermann_Meschut_2024, title={Numerical modeling of clamp load relaxation of plastic nuts under varying moisture and fiber content}, publisher={Springer Science and Business Media LLC}, author={Wippermann, Jan and Meschut, Gerson}, year={2024} }","ama":"Wippermann J, Meschut G. Numerical modeling of clamp load relaxation of plastic nuts under varying moisture and fiber content. Published online 2024.","mla":"Wippermann, Jan, and Gerson Meschut. Numerical Modeling of Clamp Load Relaxation of Plastic Nuts under Varying Moisture and Fiber Content. Springer Science and Business Media LLC, 2024."},"user_id":"55686","_id":"58441","publisher":"Springer Science and Business Media LLC","language":[{"iso":"eng"}],"date_updated":"2025-01-30T14:41:17Z","publication_status":"published","author":[{"full_name":"Wippermann, Jan","orcid":"0000-0002-5013-853X","first_name":"Jan","last_name":"Wippermann","id":"55686"},{"id":"32056","full_name":"Meschut, Gerson","orcid":"0000-0002-2763-1246","first_name":"Gerson","last_name":"Meschut"}],"status":"public","year":"2024","title":"Numerical modeling of clamp load relaxation of plastic nuts under varying moisture and fiber content"},{"date_created":"2025-01-31T16:59:13Z","type":"journal_article","keyword":["ductile damage","stress-state dependency","failure","parameter identification","punch test","clinching"],"issue":"4","publication":"Journal of Manufacturing and Materials Processing","abstract":[{"text":"Similar to bulk metal forming, clinch joining is characterised by large plastic deformations and a variety of different 3D stress states, including severe compression. However, inherent to plastic forming is the nucleation and growth of defects, whose detrimental effects on the material behaviour can be described by continuum damage models and eventually lead to material failure. As the damage evolution strongly depends on the stress state, a stress-state-dependent model is utilised to correctly track the accumulation. To formulate and parameterise this model, besides classical experiments, so-called modified punch tests are also integrated herein to enhance the calibration of the failure model by capturing a larger range of stress states and metal-forming-specific loading conditions. Moreover, when highly ductile materials are considered, such as the dual-phase steel HCT590X and the aluminium alloy EN AW-6014 T4 investigated here, strong necking and localisation might occur prior to fracture. This can alter the stress state and affect the actual strain at failure. This influence is captured by coupling plasticity and damage to incorporate the damage-induced softening effect. Its relative importance is shown by conducting inverse parameter identifications to determine damage and failure parameters for both mentioned ductile metals based on up to 12 different experiments.","lang":"eng"}],"article_number":"157","language":[{"iso":"eng"}],"doi":"10.3390/jmmp8040157","title":"Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining","year":"2024","author":[{"last_name":"Friedlein","first_name":"Johannes","full_name":"Friedlein, Johannes"},{"full_name":"Böhnke, Max","last_name":"Böhnke","first_name":"Max"},{"full_name":"Schlichter, Malte","last_name":"Schlichter","first_name":"Malte"},{"first_name":"Mathias","last_name":"Bobbert","full_name":"Bobbert, Mathias"},{"full_name":"Meschut, Gerson","first_name":"Gerson","last_name":"Meschut"},{"first_name":"Julia","last_name":"Mergheim","full_name":"Mergheim, Julia"},{"first_name":"Paul","last_name":"Steinmann","full_name":"Steinmann, Paul"}],"publication_identifier":{"issn":["2504-4494"]},"publication_status":"published","date_updated":"2025-01-31T17:03:34Z","intvolume":" 8","citation":{"ama":"Friedlein J, Böhnke M, Schlichter M, et al. Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining. Journal of Manufacturing and Materials Processing. 2024;8(4). doi:10.3390/jmmp8040157","bibtex":"@article{Friedlein_Böhnke_Schlichter_Bobbert_Meschut_Mergheim_Steinmann_2024, title={Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining}, volume={8}, DOI={10.3390/jmmp8040157}, number={4157}, journal={Journal of Manufacturing and Materials Processing}, publisher={MDPI AG}, author={Friedlein, Johannes and Böhnke, Max and Schlichter, Malte and Bobbert, Mathias and Meschut, Gerson and Mergheim, Julia and Steinmann, Paul}, year={2024} }","mla":"Friedlein, Johannes, et al. “Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining.” Journal of Manufacturing and Materials Processing, vol. 8, no. 4, 157, MDPI AG, 2024, doi:10.3390/jmmp8040157.","chicago":"Friedlein, Johannes, Max Böhnke, Malte Schlichter, Mathias Bobbert, Gerson Meschut, Julia Mergheim, and Paul Steinmann. “Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining.” Journal of Manufacturing and Materials Processing 8, no. 4 (2024). https://doi.org/10.3390/jmmp8040157.","short":"J. Friedlein, M. Böhnke, M. Schlichter, M. Bobbert, G. Meschut, J. Mergheim, P. Steinmann, Journal of Manufacturing and Materials Processing 8 (2024).","apa":"Friedlein, J., Böhnke, M., Schlichter, M., Bobbert, M., Meschut, G., Mergheim, J., & Steinmann, P. (2024). Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining. Journal of Manufacturing and Materials Processing, 8(4), Article 157. https://doi.org/10.3390/jmmp8040157","ieee":"J. Friedlein et al., “Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining,” Journal of Manufacturing and Materials Processing, vol. 8, no. 4, Art. no. 157, 2024, doi: 10.3390/jmmp8040157."},"project":[{"name":"TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen Prozessketten","_id":"130","grant_number":"418701707"},{"name":"TRR 285 - A: TRR 285 - Project Area A","_id":"131"},{"_id":"139","name":"TRR 285 – A05: TRR 285 - Subproject A05"}],"_id":"58491","publisher":"MDPI AG","user_id":"84990","volume":8,"status":"public"},{"doi":"10.1007/s00421-024-05543-x","language":[{"iso":"eng"}],"intvolume":" 124","publication_status":"published","date_updated":"2025-06-02T09:34:21Z","publication_identifier":{"issn":["1439-6319","1439-6327"]},"author":[{"last_name":"Wenzel","first_name":"Charlotte","full_name":"Wenzel, Charlotte"},{"first_name":"Thomas","last_name":"Liebig","full_name":"Liebig, Thomas"},{"full_name":"Swoboda, Adrian","first_name":"Adrian","last_name":"Swoboda"},{"full_name":"Smolareck, Rika","last_name":"Smolareck","first_name":"Rika"},{"id":"117661","full_name":"Schlagheck, Marit Lea","first_name":"Marit Lea","last_name":"Schlagheck","orcid":"0000-0002-8913-6080 "},{"full_name":"Walzik, David","last_name":"Walzik","first_name":"David"},{"first_name":"Andreas","last_name":"Groll","full_name":"Groll, Andreas"},{"last_name":"Goulding","first_name":"Richie P.","full_name":"Goulding, Richie P."},{"full_name":"Zimmer, Philipp","first_name":"Philipp","last_name":"Zimmer"}],"year":"2024","title":"Machine learning predicts peak oxygen uptake and peak power output for customizing cardiopulmonary exercise testing using non-exercise features","type":"journal_article","date_created":"2025-05-27T07:54:52Z","extern":"1","abstract":[{"text":"Abstract\r\n Purpose\r\n Cardiopulmonary exercise testing (CPET) is considered the gold standard for assessing cardiorespiratory fitness. To ensure consistent performance of each test, it is necessary to adapt the power increase of the test protocol to the physical characteristics of each individual. This study aimed to use machine learning models to determine individualized ramp protocols based on non-exercise features. We hypothesized that machine learning models will predict peak oxygen uptake ($$\\dot{V}$$\r\n \r\n V\r\n ˙\r\n \r\n O2peak) and peak power output (PPO) more accurately than conventional multiple linear regression (MLR).\r\n \r\n Methods\r\n The cross-sectional study was conducted with 274 (♀168, ♂106) participants who performed CPET on a cycle ergometer. Machine learning models and multiple linear regression were used to predict $$\\dot{V}$$\r\n \r\n V\r\n ˙\r\n \r\n O2peak and PPO using non-exercise features. The accuracy of the models was compared using criteria such as root mean square error (RMSE). Shapley additive explanation (SHAP) was applied to determine the feature importance.\r\n \r\n Results\r\n The most accurate machine learning model was the random forest (RMSE: 6.52 ml/kg/min [95% CI 5.21–8.17]) for $$\\dot{V}$$\r\n \r\n V\r\n ˙\r\n \r\n O2peak prediction and the gradient boosting regression (RMSE: 43watts [95% CI 35–52]) for PPO prediction. Compared to the MLR, the machine learning models reduced the RMSE by up to 28% and 22% for prediction of $$\\dot{V}$$\r\n \r\n V\r\n ˙\r\n \r\n O2peak and PPO, respectively. Furthermore, SHAP ranked body composition data such as skeletal muscle mass and extracellular water as the most impactful features.\r\n \r\n Conclusion\r\n Machine learning models predict $$\\dot{V}$$\r\n \r\n V\r\n ˙\r\n \r\n O2peak and PPO more accurately than MLR and can be used to individualize CPET protocols. Features that provide information about the participant's body composition contribute most to the improvement of these predictions.\r\n \r\n Trial registration number\r\n DRKS00031401 (6 March 2023, retrospectively registered).\r\n ","lang":"eng"}],"issue":"11","publication":"European Journal of Applied Physiology","volume":124,"user_id":"117661","_id":"60047","publisher":"Springer Science and Business Media LLC","page":"3421-3431","status":"public","citation":{"chicago":"Wenzel, Charlotte, Thomas Liebig, Adrian Swoboda, Rika Smolareck, Marit Lea Schlagheck, David Walzik, Andreas Groll, Richie P. Goulding, and Philipp Zimmer. “Machine Learning Predicts Peak Oxygen Uptake and Peak Power Output for Customizing Cardiopulmonary Exercise Testing Using Non-Exercise Features.” European Journal of Applied Physiology 124, no. 11 (2024): 3421–31. https://doi.org/10.1007/s00421-024-05543-x.","short":"C. Wenzel, T. Liebig, A. Swoboda, R. Smolareck, M.L. Schlagheck, D. Walzik, A. Groll, R.P. Goulding, P. Zimmer, European Journal of Applied Physiology 124 (2024) 3421–3431.","apa":"Wenzel, C., Liebig, T., Swoboda, A., Smolareck, R., Schlagheck, M. L., Walzik, D., Groll, A., Goulding, R. P., & Zimmer, P. (2024). Machine learning predicts peak oxygen uptake and peak power output for customizing cardiopulmonary exercise testing using non-exercise features. European Journal of Applied Physiology, 124(11), 3421–3431. https://doi.org/10.1007/s00421-024-05543-x","ieee":"C. Wenzel et al., “Machine learning predicts peak oxygen uptake and peak power output for customizing cardiopulmonary exercise testing using non-exercise features,” European Journal of Applied Physiology, vol. 124, no. 11, pp. 3421–3431, 2024, doi: 10.1007/s00421-024-05543-x.","ama":"Wenzel C, Liebig T, Swoboda A, et al. Machine learning predicts peak oxygen uptake and peak power output for customizing cardiopulmonary exercise testing using non-exercise features. European Journal of Applied Physiology. 2024;124(11):3421-3431. doi:10.1007/s00421-024-05543-x","bibtex":"@article{Wenzel_Liebig_Swoboda_Smolareck_Schlagheck_Walzik_Groll_Goulding_Zimmer_2024, title={Machine learning predicts peak oxygen uptake and peak power output for customizing cardiopulmonary exercise testing using non-exercise features}, volume={124}, DOI={10.1007/s00421-024-05543-x}, number={11}, journal={European Journal of Applied Physiology}, publisher={Springer Science and Business Media LLC}, author={Wenzel, Charlotte and Liebig, Thomas and Swoboda, Adrian and Smolareck, Rika and Schlagheck, Marit Lea and Walzik, David and Groll, Andreas and Goulding, Richie P. and Zimmer, Philipp}, year={2024}, pages={3421–3431} }","mla":"Wenzel, Charlotte, et al. “Machine Learning Predicts Peak Oxygen Uptake and Peak Power Output for Customizing Cardiopulmonary Exercise Testing Using Non-Exercise Features.” European Journal of Applied Physiology, vol. 124, no. 11, Springer Science and Business Media LLC, 2024, pp. 3421–31, doi:10.1007/s00421-024-05543-x."}},{"citation":{"mla":"Schaefer, Edyta, et al. “Adherence to the Dietary Approaches to Stop Hypertension (DASH) Diet Is Associated with Lower Visceral and Hepatic Lipid Content in Recent‐onset Type 1 Diabetes and Type 2 Diabetes.” Diabetes, Obesity and Metabolism, vol. 26, no. 10, Wiley, 2024, pp. 4281–92, doi:10.1111/dom.15772.","bibtex":"@article{Schaefer_Lang_Kupriyanova_Bódis_Weber_Buyken_Barbaresko_Kössler_Kahl_Zaharia_et al._2024, title={Adherence to the Dietary Approaches to Stop Hypertension (DASH) diet is associated with lower visceral and hepatic lipid content in recent‐onset type 1 diabetes and type 2 diabetes}, volume={26}, DOI={10.1111/dom.15772}, number={10}, journal={Diabetes, Obesity and Metabolism}, publisher={Wiley}, author={Schaefer, Edyta and Lang, Alexander and Kupriyanova, Yuliya and Bódis, Kálmán B. and Weber, Katharina S. and Buyken, Anette and Barbaresko, Janett and Kössler, Theresa and Kahl, Sabine and Zaharia, Oana‐Patricia and et al.}, year={2024}, pages={4281–4292} }","ama":"Schaefer E, Lang A, Kupriyanova Y, et al. Adherence to the Dietary Approaches to Stop Hypertension (DASH) diet is associated with lower visceral and hepatic lipid content in recent‐onset type 1 diabetes and type 2 diabetes. Diabetes, Obesity and Metabolism. 2024;26(10):4281-4292. doi:10.1111/dom.15772","ieee":"E. Schaefer et al., “Adherence to the Dietary Approaches to Stop Hypertension (DASH) diet is associated with lower visceral and hepatic lipid content in recent‐onset type 1 diabetes and type 2 diabetes,” Diabetes, Obesity and Metabolism, vol. 26, no. 10, pp. 4281–4292, 2024, doi: 10.1111/dom.15772.","apa":"Schaefer, E., Lang, A., Kupriyanova, Y., Bódis, K. B., Weber, K. S., Buyken, A., Barbaresko, J., Kössler, T., Kahl, S., Zaharia, O., Szendroedi, J., Herder, C., Schrauwen‐Hinderling, V. B., Wagner, R., Kuss, O., Roden, M., & Schlesinger, S. (2024). Adherence to the Dietary Approaches to Stop Hypertension (DASH) diet is associated with lower visceral and hepatic lipid content in recent‐onset type 1 diabetes and type 2 diabetes. Diabetes, Obesity and Metabolism, 26(10), 4281–4292. https://doi.org/10.1111/dom.15772","short":"E. Schaefer, A. Lang, Y. Kupriyanova, K.B. Bódis, K.S. Weber, A. Buyken, J. Barbaresko, T. Kössler, S. Kahl, O. Zaharia, J. Szendroedi, C. Herder, V.B. Schrauwen‐Hinderling, R. Wagner, O. Kuss, M. Roden, S. Schlesinger, Diabetes, Obesity and Metabolism 26 (2024) 4281–4292.","chicago":"Schaefer, Edyta, Alexander Lang, Yuliya Kupriyanova, Kálmán B. Bódis, Katharina S. Weber, Anette Buyken, Janett Barbaresko, et al. “Adherence to the Dietary Approaches to Stop Hypertension (DASH) Diet Is Associated with Lower Visceral and Hepatic Lipid Content in Recent‐onset Type 1 Diabetes and Type 2 Diabetes.” Diabetes, Obesity and Metabolism 26, no. 10 (2024): 4281–92. https://doi.org/10.1111/dom.15772."},"user_id":"92491","volume":26,"page":"4281-4292","_id":"60176","publisher":"Wiley","status":"public","type":"journal_article","department":[{"_id":"22"}],"date_created":"2025-06-11T08:39:22Z","abstract":[{"lang":"eng","text":"AbstractAimTo investigate the associations of the Dietary Approaches to Stop Hypertension (DASH) score with subcutaneous (SAT) and visceral (VAT) adipose tissue volume and hepatic lipid content (HLC) in people with diabetes and to examine whether changes in the DASH diet were associated with changes in these outcomes.MethodsIn total, 335 participants with recent‐onset type 1 diabetes (T1D) and type 2 diabetes (T2D) from the German Diabetes Study were included in the cross‐sectional analysis, and 111 participants in the analysis of changes during the 5‐year follow‐up. Associations between the DASH score and VAT, SAT and HLC and their changes were investigated using multivariable linear regression models by diabetes type. The proportion mediated by changes in potential mediators was determined using mediation analysis.ResultsA higher baseline DASH score was associated with lower HLC, especially in people with T2D (per 5 points: −1.5% [−2.7%; −0.3%]). Over 5 years, a 5‐point increase in the DASH score was associated with decreased VAT in people with T2D (−514 [−800; −228] cm3). Similar, but imprecise, associations were observed for VAT changes in people with T1D (−403 [−861; 55] cm3) and for HLC in people with T2D (−1.3% [−2.8%; 0.3%]). Body mass index and waist circumference changes explained 8%‐48% of the associations between DASH and VAT changes in both groups. In people with T2D, adipose tissue insulin resistance index (Adipo‐IR) changes explained 47% of the association between DASH and HLC changes.ConclusionsA shift to a DASH‐like diet was associated with favourable VAT and HLC changes, which were partly explained by changes in anthropometric measures and Adipo‐IR."}],"publication":"Diabetes, Obesity and Metabolism","issue":"10","doi":"10.1111/dom.15772","language":[{"iso":"eng"}],"date_updated":"2025-06-11T08:42:19Z","publication_status":"published","intvolume":" 26","year":"2024","title":"Adherence to the Dietary Approaches to Stop Hypertension (DASH) diet is associated with lower visceral and hepatic lipid content in recent‐onset type 1 diabetes and type 2 diabetes","author":[{"full_name":"Schaefer, Edyta","first_name":"Edyta","last_name":"Schaefer"},{"full_name":"Lang, Alexander","last_name":"Lang","first_name":"Alexander"},{"first_name":"Yuliya","last_name":"Kupriyanova","full_name":"Kupriyanova, Yuliya"},{"last_name":"Bódis","first_name":"Kálmán B.","full_name":"Bódis, Kálmán B."},{"last_name":"Weber","first_name":"Katharina S.","full_name":"Weber, Katharina S."},{"full_name":"Buyken, Anette","first_name":"Anette","last_name":"Buyken","id":"65985"},{"last_name":"Barbaresko","first_name":"Janett","full_name":"Barbaresko, Janett"},{"last_name":"Kössler","first_name":"Theresa","full_name":"Kössler, Theresa"},{"first_name":"Sabine","last_name":"Kahl","full_name":"Kahl, Sabine"},{"first_name":"Oana‐Patricia","last_name":"Zaharia","full_name":"Zaharia, Oana‐Patricia"},{"first_name":"Julia","last_name":"Szendroedi","full_name":"Szendroedi, Julia"},{"first_name":"Christian","last_name":"Herder","full_name":"Herder, Christian"},{"last_name":"Schrauwen‐Hinderling","first_name":"Vera B.","full_name":"Schrauwen‐Hinderling, Vera B."},{"first_name":"Robert","last_name":"Wagner","full_name":"Wagner, Robert"},{"full_name":"Kuss, Oliver","last_name":"Kuss","first_name":"Oliver"},{"first_name":"Michael","last_name":"Roden","full_name":"Roden, Michael"},{"full_name":"Schlesinger, Sabrina","first_name":"Sabrina","last_name":"Schlesinger"}],"publication_identifier":{"issn":["1462-8902","1463-1326"]}},{"date_updated":"2026-02-11T09:12:05Z","author":[{"id":"20792","full_name":"Scheideler, Christian","last_name":"Scheideler","first_name":"Christian"},{"last_name":"Hinnenthal ","first_name":"Kristian ","full_name":"Hinnenthal , Kristian "},{"last_name":"Liedtke","first_name":"David Jan","full_name":"Liedtke, David Jan","id":"55557"}],"status":"public","title":"Efficient Shape Formation by 3D Hybrid Programmable Matter: An Algorithm for Low Diameter Intermediate Structures. SAND 2024: 15:1-15:20","year":"2024","user_id":"15578","_id":"64104","language":[{"iso":"eng"}],"citation":{"chicago":"Scheideler, Christian, Kristian Hinnenthal , and David Jan Liedtke. “Efficient Shape Formation by 3D Hybrid Programmable Matter: An Algorithm for Low Diameter Intermediate Structures. SAND 2024: 15:1-15:20.” CoRR abs/2401.17734 (2024), 2024.","short":"C. Scheideler, K. Hinnenthal , D.J. Liedtke, in: CoRR abs/2401.17734 (2024), 2024.","apa":"Scheideler, C., Hinnenthal , K., & Liedtke, D. J. (2024). Efficient Shape Formation by 3D Hybrid Programmable Matter: An Algorithm for Low Diameter Intermediate Structures. SAND 2024: 15:1-15:20.","ieee":"C. Scheideler, K. Hinnenthal , and D. J. Liedtke, “Efficient Shape Formation by 3D Hybrid Programmable Matter: An Algorithm for Low Diameter Intermediate Structures. SAND 2024: 15:1-15:20,” 2024.","ama":"Scheideler C, Hinnenthal K, Liedtke DJ. Efficient Shape Formation by 3D Hybrid Programmable Matter: An Algorithm for Low Diameter Intermediate Structures. SAND 2024: 15:1-15:20. In: ; 2024.","bibtex":"@inproceedings{Scheideler_Hinnenthal _Liedtke_2024, place={CoRR abs/2401.17734 (2024)}, title={Efficient Shape Formation by 3D Hybrid Programmable Matter: An Algorithm for Low Diameter Intermediate Structures. SAND 2024: 15:1-15:20}, author={Scheideler, Christian and Hinnenthal , Kristian and Liedtke, David Jan}, year={2024} }","mla":"Scheideler, Christian, et al. Efficient Shape Formation by 3D Hybrid Programmable Matter: An Algorithm for Low Diameter Intermediate Structures. SAND 2024: 15:1-15:20. 2024."},"department":[{"_id":"34"},{"_id":"7"},{"_id":"79"}],"type":"conference","date_created":"2026-02-10T10:12:18Z","place":"CoRR abs/2401.17734 (2024)"},{"date_updated":"2026-02-11T09:12:11Z","status":"public","title":"Universal Coating by 3D Hybrid Programmable Matter.","year":"2024","author":[{"first_name":"Christian","last_name":"Scheideler","full_name":"Scheideler, Christian","id":"20792"},{"full_name":"Kostitsyna, Irina ","first_name":"Irina ","last_name":"Kostitsyna"},{"last_name":"Liedtke","first_name":"David Jan","full_name":"Liedtke, David Jan","id":"55557"}],"user_id":"15578","_id":"64106","language":[{"iso":"eng"}],"citation":{"chicago":"Scheideler, Christian, Irina Kostitsyna, and David Jan Liedtke. “Universal Coating by 3D Hybrid Programmable Matter.” SIROCCO 2024: 384-401, 2024.","short":"C. Scheideler, I. Kostitsyna, D.J. Liedtke, in: SIROCCO 2024: 384-401, 2024.","ieee":"C. Scheideler, I. Kostitsyna, and D. J. Liedtke, “Universal Coating by 3D Hybrid Programmable Matter.,” 2024.","apa":"Scheideler, C., Kostitsyna, I., & Liedtke, D. J. (2024). Universal Coating by 3D Hybrid Programmable Matter.","bibtex":"@inproceedings{Scheideler_Kostitsyna_Liedtke_2024, place={SIROCCO 2024: 384-401}, title={Universal Coating by 3D Hybrid Programmable Matter.}, author={Scheideler, Christian and Kostitsyna, Irina and Liedtke, David Jan}, year={2024} }","ama":"Scheideler C, Kostitsyna I, Liedtke DJ. Universal Coating by 3D Hybrid Programmable Matter. In: ; 2024.","mla":"Scheideler, Christian, et al. Universal Coating by 3D Hybrid Programmable Matter. 2024."},"type":"conference","department":[{"_id":"34"},{"_id":"7"},{"_id":"79"}],"date_created":"2026-02-10T10:21:39Z","place":"SIROCCO 2024: 384-401"},{"status":"public","volume":134,"user_id":"106786","_id":"61834","publisher":"Springer Science and Business Media LLC","page":"1789-1804","citation":{"mla":"Kaleem, Muhammad Ali, et al. “Additive Manufacturing of Polymeric Pressure Die for Rotary Draw Bending Process.” The International Journal of Advanced Manufacturing Technology, vol. 134, no. 3–4, Springer Science and Business Media LLC, 2024, pp. 1789–804, doi:10.1007/s00170-024-14221-3.","bibtex":"@article{Kaleem_Steinheimer_Frohn-Sörensen_Gabsa_Engel_2024, title={Additive manufacturing of polymeric pressure die for rotary draw bending process}, volume={134}, DOI={10.1007/s00170-024-14221-3}, number={3–4}, journal={The International Journal of Advanced Manufacturing Technology}, publisher={Springer Science and Business Media LLC}, author={Kaleem, Muhammad Ali and Steinheimer, Rainer and Frohn-Sörensen, Peter and Gabsa, Steffen and Engel, Bernd}, year={2024}, pages={1789–1804} }","ama":"Kaleem MA, Steinheimer R, Frohn-Sörensen P, Gabsa S, Engel B. Additive manufacturing of polymeric pressure die for rotary draw bending process. The International Journal of Advanced Manufacturing Technology. 2024;134(3-4):1789-1804. doi:10.1007/s00170-024-14221-3","ieee":"M. A. Kaleem, R. Steinheimer, P. Frohn-Sörensen, S. Gabsa, and B. Engel, “Additive manufacturing of polymeric pressure die for rotary draw bending process,” The International Journal of Advanced Manufacturing Technology, vol. 134, no. 3–4, pp. 1789–1804, 2024, doi: 10.1007/s00170-024-14221-3.","apa":"Kaleem, M. A., Steinheimer, R., Frohn-Sörensen, P., Gabsa, S., & Engel, B. (2024). Additive manufacturing of polymeric pressure die for rotary draw bending process. The International Journal of Advanced Manufacturing Technology, 134(3–4), 1789–1804. https://doi.org/10.1007/s00170-024-14221-3","short":"M.A. Kaleem, R. Steinheimer, P. Frohn-Sörensen, S. Gabsa, B. Engel, The International Journal of Advanced Manufacturing Technology 134 (2024) 1789–1804.","chicago":"Kaleem, Muhammad Ali, Rainer Steinheimer, Peter Frohn-Sörensen, Steffen Gabsa, and Bernd Engel. “Additive Manufacturing of Polymeric Pressure Die for Rotary Draw Bending Process.” The International Journal of Advanced Manufacturing Technology 134, no. 3–4 (2024): 1789–1804. https://doi.org/10.1007/s00170-024-14221-3."},"intvolume":" 134","publication_status":"published","date_updated":"2025-10-15T13:08:16Z","author":[{"first_name":"Muhammad Ali","last_name":"Kaleem","full_name":"Kaleem, Muhammad Ali"},{"full_name":"Steinheimer, Rainer","last_name":"Steinheimer","first_name":"Rainer"},{"full_name":"Frohn-Sörensen, Peter","last_name":"Frohn-Sörensen","first_name":"Peter"},{"last_name":"Gabsa","first_name":"Steffen","full_name":"Gabsa, Steffen","id":"106786"},{"full_name":"Engel, Bernd","first_name":"Bernd","last_name":"Engel"}],"publication_identifier":{"issn":["0268-3768","1433-3015"]},"year":"2024","title":"Additive manufacturing of polymeric pressure die for rotary draw bending process","doi":"10.1007/s00170-024-14221-3","language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"Abstract3D printing or additive manufacturing (AM) possesses enormous potential to benefit the manufacturing industry. Presently, rotary draw bending (RDB) is one of the most commonly used cold-forming industrial process for bending metal tubes. Pressure die is a fundamental forming tool in RDB processes, and it is conventionally made by various grades of comparatively expensive alloy steels. This research presents a novel design of a pressure die which can be 3D printed by using inexpensive polymeric filaments. In this research paper, the 3D-printed pressure die is named as “FFF-pressure die.” The material used to fabricate the FFF-pressure die is a thermoplastic polymer known as “ecoPLA.” The mechanical properties of ecoPLA are studied in relation to the process conditions of a RDB process. Firstly, an initial feasibility of using the FFF-pressure die in a RDB process is obtained by conducting a quick static stress analysis with actual process conditions. After initial feasibility, a complete RDB process is developed and simulated with actual process conditions and material properties. The FFF-pressure die is then practically fabricated by FFF 3D printer and experimentally tested on an industrial RDB machine. The results of practical experiments are compared with the simulation results. In order to make a comparison of the FFF-pressure die with the conventional metal pressure die, the simulation and practical process is also conducted with the conventional metal pressure die. A performance and cost comparison is made between the polymeric FFF-pressure die and the conventional metal pressure die. Von Mises stresses, contact forces, failure risk, and elastic deformations are analyzed. The advantages and limitations of using the FFF-pressure die in a RDB process are discussed in the end. This research intends to widen the avenue of using cost-effective and lightweight forming tools in metal forming industries."}],"issue":"3-4","publication":"The International Journal of Advanced Manufacturing Technology","type":"journal_article","date_created":"2025-10-15T09:02:15Z"},{"date_created":"2025-12-08T08:32:26Z","department":[{"_id":"302"}],"type":"journal_article","publication":"Discover Applied Sciences","issue":"6","abstract":[{"lang":"eng","text":"AbstractNanostructured bilayer thin films with superhydrophobic and superhydrophilic surfaces were prepared using Ti6Al4V alloy substrates which allowed for the comparative analysis of polyvinyl acetate (PVAc) particle adsorption as a function of the interface structure. The PVAc particles were obtained from emulsion polymerization of vinyl acetate. A superhydrophilic TiO2 nanofiber-based 3D network was created on the Ti6Al4V alloy substrate by application of a hydrothermal method. Subsequent UV-grafting of ultra-thin polydimethylsiloxane (PDMS) layers resulted in a superhydrophobic surface. The modification steps were followed via Diffuse Reflectance Infrared Fourier Transform Spectroscopy, X-ray Photoelectron Spectroscopy, Field Emission-Scanning Electron Microscopy, contact angle and Electrochemical Impedance Spectroscopy. A mechanism for the adsorption of PVAc at the two electrolyte/substrate interfaces could be revealed."}],"language":[{"iso":"eng"}],"article_number":"294","doi":"10.1007/s42452-024-05916-z","author":[{"full_name":"Neßlinger, Vanessa","first_name":"Vanessa","orcid":"0000-0001-9416-1646","last_name":"Neßlinger","id":"54649"},{"last_name":"Atlanov","first_name":"Jan","full_name":"Atlanov, Jan"},{"last_name":"Grundmeier","first_name":"Guido","full_name":"Grundmeier, Guido","id":"194"}],"publication_identifier":{"issn":["3004-9261"]},"year":"2024","title":"Interactions of polyvinyl acetate dispersions with nanostructured superhydrophilic and superhydrophobic Ti6Al4V alloy surfaces","intvolume":" 6","date_updated":"2025-12-08T08:33:00Z","publication_status":"published","citation":{"ieee":"V. Neßlinger, J. Atlanov, and G. Grundmeier, “Interactions of polyvinyl acetate dispersions with nanostructured superhydrophilic and superhydrophobic Ti6Al4V alloy surfaces,” Discover Applied Sciences, vol. 6, no. 6, Art. no. 294, 2024, doi: 10.1007/s42452-024-05916-z.","apa":"Neßlinger, V., Atlanov, J., & Grundmeier, G. (2024). Interactions of polyvinyl acetate dispersions with nanostructured superhydrophilic and superhydrophobic Ti6Al4V alloy surfaces. Discover Applied Sciences, 6(6), Article 294. https://doi.org/10.1007/s42452-024-05916-z","short":"V. Neßlinger, J. Atlanov, G. Grundmeier, Discover Applied Sciences 6 (2024).","chicago":"Neßlinger, Vanessa, Jan Atlanov, and Guido Grundmeier. “Interactions of Polyvinyl Acetate Dispersions with Nanostructured Superhydrophilic and Superhydrophobic Ti6Al4V Alloy Surfaces.” Discover Applied Sciences 6, no. 6 (2024). https://doi.org/10.1007/s42452-024-05916-z.","mla":"Neßlinger, Vanessa, et al. “Interactions of Polyvinyl Acetate Dispersions with Nanostructured Superhydrophilic and Superhydrophobic Ti6Al4V Alloy Surfaces.” Discover Applied Sciences, vol. 6, no. 6, 294, Springer Science and Business Media LLC, 2024, doi:10.1007/s42452-024-05916-z.","bibtex":"@article{Neßlinger_Atlanov_Grundmeier_2024, title={Interactions of polyvinyl acetate dispersions with nanostructured superhydrophilic and superhydrophobic Ti6Al4V alloy surfaces}, volume={6}, DOI={10.1007/s42452-024-05916-z}, number={6294}, journal={Discover Applied Sciences}, publisher={Springer Science and Business Media LLC}, author={Neßlinger, Vanessa and Atlanov, Jan and Grundmeier, Guido}, year={2024} }","ama":"Neßlinger V, Atlanov J, Grundmeier G. Interactions of polyvinyl acetate dispersions with nanostructured superhydrophilic and superhydrophobic Ti6Al4V alloy surfaces. Discover Applied Sciences. 2024;6(6). doi:10.1007/s42452-024-05916-z"},"project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"62942","publisher":"Springer Science and Business Media LLC","volume":6,"user_id":"54649","status":"public"},{"citation":{"apa":"Arian, B., Homberg, W., Kersting, L., Trächtler, A., Rozo Vasquez, J., & Walther, F. (2024). α’-martensite grading techniques in reverse flow forming of AISI 304L. Materials Research Proceedings, 44. https://doi.org/10.21741/9781644903254-76","ieee":"B. Arian, W. Homberg, L. Kersting, A. Trächtler, J. Rozo Vasquez, and F. Walther, “α’-martensite grading techniques in reverse flow forming of AISI 304L,” in Materials Research Proceedings, 2024, vol. 44, doi: 10.21741/9781644903254-76.","short":"B. Arian, W. Homberg, L. Kersting, A. Trächtler, J. Rozo Vasquez, F. Walther, in: Materials Research Proceedings, Materials Research Forum LLC, 2024.","chicago":"Arian, Bahman, Werner Homberg, Lukas Kersting, Ansgar Trächtler, Julian Rozo Vasquez, and Frank Walther. “α’-Martensite Grading Techniques in Reverse Flow Forming of AISI 304L.” In Materials Research Proceedings, Vol. 44. Materials Research Forum LLC, 2024. https://doi.org/10.21741/9781644903254-76.","mla":"Arian, Bahman, et al. “α’-Martensite Grading Techniques in Reverse Flow Forming of AISI 304L.” Materials Research Proceedings, vol. 44, Materials Research Forum LLC, 2024, doi:10.21741/9781644903254-76.","ama":"Arian B, Homberg W, Kersting L, Trächtler A, Rozo Vasquez J, Walther F. α’-martensite grading techniques in reverse flow forming of AISI 304L. In: Materials Research Proceedings. Vol 44. Materials Research Forum LLC; 2024. doi:10.21741/9781644903254-76","bibtex":"@inproceedings{Arian_Homberg_Kersting_Trächtler_Rozo Vasquez_Walther_2024, title={α’-martensite grading techniques in reverse flow forming of AISI 304L}, volume={44}, DOI={10.21741/9781644903254-76}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Arian, Bahman and Homberg, Werner and Kersting, Lukas and Trächtler, Ansgar and Rozo Vasquez, Julian and Walther, Frank}, year={2024} }"},"quality_controlled":"1","_id":"57173","publisher":"Materials Research Forum LLC","user_id":"41470","volume":44,"status":"public","date_created":"2024-11-18T10:06:17Z","type":"conference","department":[{"_id":"241"},{"_id":"153"},{"_id":"156"}],"publication":"Materials Research Proceedings","abstract":[{"text":"Manufacturing processes benefit from property control enabling reproducibility, application oriented outcomes, and efficient part production. In reverse flow forming, state of the art practices focus primarily on geometry control, neglecting property control. Given the intricacies of the process involving the interaction of tool and machine behavior, process parameters, properties of semi finished products and temperatures, incorporating process control becomes an imperative for producing components with predefined properties. The property controlled within this reverse flow forming process is the local α’ martensite content. Therefore, process strategies to actively influence the α’ martensite content must be implemented. In this study seamless AISI 304L steel tubes are used, where α’ martensite formation is strain and/or temperature induced through phase transformation within the process. This paper presents innovative process strategies, methods, and specially developed mechanical and thermal actuator systems to locally increase or suppress the α’ martensite content. The use and implementation of these approaches and tools allows the creation of unique optically invisible microstructure profiles containing 3D gradings, implying a radial grading of α’ martensite. The locally implemented α’ martensite, forming these 3D gradings, offers potential applications for functional or sensory purposes. This paper extends beyond theoretical concepts, providing tangible component outcomes.","lang":"eng"}],"language":[{"iso":"eng"}],"doi":"10.21741/9781644903254-76","year":"2024","title":"α’-martensite grading techniques in reverse flow forming of AISI 304L","publication_identifier":{"issn":["2474-395X"]},"author":[{"full_name":"Arian, Bahman","first_name":"Bahman","last_name":"Arian","id":"36287"},{"first_name":"Werner","last_name":"Homberg","full_name":"Homberg, Werner","id":"233"},{"first_name":"Lukas","last_name":"Kersting","full_name":"Kersting, Lukas"},{"id":"552","full_name":"Trächtler, Ansgar","last_name":"Trächtler","first_name":"Ansgar"},{"full_name":"Rozo Vasquez, Julian","first_name":"Julian","last_name":"Rozo Vasquez"},{"full_name":"Walther, Frank","first_name":"Frank","last_name":"Walther"}],"date_updated":"2024-11-18T10:42:55Z","publication_status":"published","intvolume":" 44"},{"page":"1-10","language":[{"iso":"eng"}],"_id":"57429","publisher":"Informa UK Limited","doi":"10.1080/07420528.2024.2428203","user_id":"49428","year":"2024","title":"Relevance of high glycaemic index breakfast for heart rate variability among collegiate students with early and late chronotypes","status":"public","author":[{"id":"49428","full_name":"Krueger, Bettina","orcid":"0000-0001-5351-1785","last_name":"Krueger","first_name":"Bettina"},{"id":"77099","full_name":"Stutz, Bianca","first_name":"Bianca","last_name":"Stutz"},{"id":"9583","orcid":"0000-0002-9385-0834","first_name":"Rasmus","last_name":"Jakobsmeyer","full_name":"Jakobsmeyer, Rasmus"},{"full_name":"Reinsberger, Claus","last_name":"Reinsberger","first_name":"Claus","id":"48978"},{"id":"65985","full_name":"Buyken, Anette E.","last_name":"Buyken","first_name":"Anette E."}],"publication_identifier":{"issn":["0742-0528","1525-6073"]},"date_updated":"2024-11-26T10:52:50Z","publication_status":"published","date_created":"2024-11-26T10:51:33Z","type":"journal_article","department":[{"_id":"35"},{"_id":"22"}],"publication":"Chronobiology International","citation":{"bibtex":"@article{Krueger_Stutz_Jakobsmeyer_Reinsberger_Buyken_2024, title={Relevance of high glycaemic index breakfast for heart rate variability among collegiate students with early and late chronotypes}, DOI={10.1080/07420528.2024.2428203}, journal={Chronobiology International}, publisher={Informa UK Limited}, author={Krueger, Bettina and Stutz, Bianca and Jakobsmeyer, Rasmus and Reinsberger, Claus and Buyken, Anette E.}, year={2024}, pages={1–10} }","ama":"Krueger B, Stutz B, Jakobsmeyer R, Reinsberger C, Buyken AE. Relevance of high glycaemic index breakfast for heart rate variability among collegiate students with early and late chronotypes. Chronobiology International. Published online 2024:1-10. doi:10.1080/07420528.2024.2428203","mla":"Krueger, Bettina, et al. “Relevance of High Glycaemic Index Breakfast for Heart Rate Variability among Collegiate Students with Early and Late Chronotypes.” Chronobiology International, Informa UK Limited, 2024, pp. 1–10, doi:10.1080/07420528.2024.2428203.","short":"B. Krueger, B. Stutz, R. Jakobsmeyer, C. Reinsberger, A.E. Buyken, Chronobiology International (2024) 1–10.","chicago":"Krueger, Bettina, Bianca Stutz, Rasmus Jakobsmeyer, Claus Reinsberger, and Anette E. Buyken. “Relevance of High Glycaemic Index Breakfast for Heart Rate Variability among Collegiate Students with Early and Late Chronotypes.” Chronobiology International, 2024, 1–10. https://doi.org/10.1080/07420528.2024.2428203.","ieee":"B. Krueger, B. Stutz, R. Jakobsmeyer, C. Reinsberger, and A. E. Buyken, “Relevance of high glycaemic index breakfast for heart rate variability among collegiate students with early and late chronotypes,” Chronobiology International, pp. 1–10, 2024, doi: 10.1080/07420528.2024.2428203.","apa":"Krueger, B., Stutz, B., Jakobsmeyer, R., Reinsberger, C., & Buyken, A. E. (2024). Relevance of high glycaemic index breakfast for heart rate variability among collegiate students with early and late chronotypes. Chronobiology International, 1–10. https://doi.org/10.1080/07420528.2024.2428203"}},{"citation":{"ieee":"R. Unruh, J. Böcker, and F. Schafmeister, “Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter,” presented at the ECCE Europe 2024, Darmstadt, Germany, doi: https://doi.org/10.1109/ECCEEurope62508.2024.10751954.","apa":"Unruh, R., Böcker, J., & Schafmeister, F. (n.d.). Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter. ECCE Europe 2024; IEEE Energy Conversion Congress & Exposition Europe. ECCE Europe 2024, Darmstadt, Germany. https://doi.org/10.1109/ECCEEurope62508.2024.10751954","short":"R. Unruh, J. Böcker, F. Schafmeister, in: ECCE Europe 2024; IEEE Energy Conversion Congress & Exposition Europe, IEEE, Darmstadt, n.d.","chicago":"Unruh, Roland, Joachim Böcker, and Frank Schafmeister. “Experimentally Verified 22 KW, 40 KHz LLC Resonant Converter Design with New Control for a 1 MW Cascaded H-Bridge Converter.” In ECCE Europe 2024; IEEE Energy Conversion Congress & Exposition Europe. Darmstadt: IEEE, n.d. https://doi.org/10.1109/ECCEEurope62508.2024.10751954.","mla":"Unruh, Roland, et al. “Experimentally Verified 22 KW, 40 KHz LLC Resonant Converter Design with New Control for a 1 MW Cascaded H-Bridge Converter.” ECCE Europe 2024; IEEE Energy Conversion Congress & Exposition Europe, IEEE, doi:https://doi.org/10.1109/ECCEEurope62508.2024.10751954.","bibtex":"@inproceedings{Unruh_Böcker_Schafmeister, place={Darmstadt}, title={Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter}, DOI={https://doi.org/10.1109/ECCEEurope62508.2024.10751954}, booktitle={ECCE Europe 2024; IEEE Energy Conversion Congress & Exposition Europe}, publisher={IEEE}, author={Unruh, Roland and Böcker, Joachim and Schafmeister, Frank} }","ama":"Unruh R, Böcker J, Schafmeister F. Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter. In: ECCE Europe 2024; IEEE Energy Conversion Congress & Exposition Europe. IEEE. doi:https://doi.org/10.1109/ECCEEurope62508.2024.10751954"},"place":"Darmstadt","status":"public","conference":{"end_date":"2024-09-06","name":"ECCE Europe 2024","start_date":"2024-09-02","location":"Darmstadt, Germany"},"user_id":"34289","_id":"54356","publisher":"IEEE","abstract":[{"text":"Although there are numerous design and control methodologies for the LLC resonant converter,\r\nthey often do not consider decentralized control strategies to operate them as isolated DC-DC converters within a\r\ncascaded H-bridge. The total output power of all LLC converters must be constant to supply a load such as a wa-\r\nter electrolyzer. However, each individual LLC converter can vary its output power as long as the total output\r\npower remains constant. This opens new possibilities in increasing the system efficiency and robustness. Usually,\r\nthe DC-link voltage of each module capacitor shows a 2nd harmonic voltage ripple. However, the total stored energy\r\nin all DC-link capacitors is constant within a grid period for a balanced three-phase system. By controlling each\r\nLLC converter’s output power locally to be proportional to the energy stored in its DC-link capacitor, modules with\r\na lower instantaneous DC-link voltage transfer less power to the load than modules with a higher DC-link voltage.\r\nAs a result, a higher efficiency, voltage gain and lower peak resonant capacitor voltage can be achieved with the\r\nsame components. The 22.2kW experimental prototype of the LLC converter reaches an efficiency of over 97% at\r\nresonance which is similar to the precalculated value.","lang":"eng"}],"publication":"ECCE Europe 2024; IEEE Energy Conversion Congress & Exposition Europe","type":"conference","keyword":["Cascaded H-Bridge","Converter Losses","Decentralized Control","Full-Bridge Converter","LLC Resonant Converter"],"department":[{"_id":"52"}],"date_created":"2024-05-19T14:26:29Z","publication_status":"accepted","date_updated":"2024-11-28T14:16:05Z","title":"Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter","year":"2024","author":[{"full_name":"Unruh, Roland","last_name":"Unruh","first_name":"Roland","id":"34289"},{"last_name":"Böcker","first_name":"Joachim","orcid":"0000-0002-8480-7295","full_name":"Böcker, Joachim","id":"66"},{"full_name":"Schafmeister, Frank","first_name":"Frank","last_name":"Schafmeister","id":"71291"}],"publication_identifier":{"isbn":["979-8-3503-6444-6"]},"doi":"https://doi.org/10.1109/ECCEEurope62508.2024.10751954","main_file_link":[{"url":"https://ieeexplore.ieee.org/abstract/document/10751954"}],"language":[{"iso":"eng"}]},{"language":[{"iso":"ger"}],"doi":"10.3278/HSLT2402W","title":"Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre","year":"2024","intvolume":" 10","date_updated":"2024-12-09T09:07:12Z","publication_status":"published","date_created":"2024-12-09T09:07:06Z","file":[{"date_updated":"2024-12-09T09:05:36Z","relation":"main_file","access_level":"closed","file_size":3949565,"file_name":"HSLT2402W.pdf","success":1,"content_type":"application/pdf","file_id":"57649","creator":"nerea","date_created":"2024-12-09T09:05:36Z"}],"type":"journal_editor","publication":"die hochschullehre","abstract":[{"lang":"ger","text":"Das Themenheft präsentiert forschende und strategische Perspektiven auf eine postdigitale Hochschullehre. Die COVID-19-Pandemie führte zu einer grundlegenden Umgestaltung der Hochschullehre und wirkte als Katalysator für die Gestaltung digital unterstützender Innovationen in der Hochschullehre. Unter dem Schlagwort postdigiale Hochschullehre beschäftigten sich die vorliegenden Beiträge der dghd-Tagung 2022 mit diesem veränderten Lehren und Lernen."}],"_id":"57648","editor":[{"full_name":"Vöing, Nerea","last_name":"Vöing","first_name":"Nerea","id":"5054"}],"volume":10,"ddc":["370"],"user_id":"5054","conference":{"location":"Paderborn","start_date":"6.9.2022","name":"22. Jahrestagung der Deutschen Gesellschaft für Hochschuldidaktik","end_date":"9.9.2022"},"status":"public","has_accepted_license":"1","citation":{"mla":"Vöing, Nerea, editor. “Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre.” die hochschullehre, vol. 10, 2024, doi:10.3278/HSLT2402W.","ama":"Vöing N, ed. Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre. Vol 10.; 2024. doi:10.3278/HSLT2402W","bibtex":"@book{Vöing_2024, title={Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre}, volume={10}, DOI={10.3278/HSLT2402W}, journal={die hochschullehre}, year={2024} }","apa":"Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre. (2024). In N. Vöing (Ed.), die hochschullehre (Vol. 10). https://doi.org/10.3278/HSLT2402W","ieee":"N. Vöing, Ed., Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre, vol. 10. 2024.","short":"N. Vöing, ed., Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre, 2024.","chicago":"Vöing, Nerea, ed. Transformationen. Forschende und strategische Perspektiven auf eine postdigitale Hochschullehre. die hochschullehre. Vol. 10, 2024. https://doi.org/10.3278/HSLT2402W."},"file_date_updated":"2024-12-09T09:05:36Z"},{"publication":"Proceedings of the Energy Conversion Congress & Expo (ECCE Europe)","date_created":"2025-02-14T15:30:36Z","file":[{"date_created":"2025-02-14T15:32:17Z","creator":"schafmei","file_id":"58649","success":1,"content_type":"application/pdf","file_name":"EPE_2024_09_02-Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter.pdf","access_level":"closed","file_size":3829411,"relation":"main_file","date_updated":"2025-02-14T15:32:17Z"}],"department":[{"_id":"52"}],"type":"conference","author":[{"full_name":"Unruh, Roland","first_name":"Roland","last_name":"Unruh","id":"34289"},{"first_name":"Joachim ","last_name":"Böcker","full_name":"Böcker, Joachim "},{"full_name":"Schafmeister, Frank","last_name":"Schafmeister","first_name":"Frank","id":"71291"}],"title":"Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter","year":"2024","date_updated":"2025-02-14T15:33:10Z","publication_status":"published","language":[{"iso":"eng"}],"doi":"10.1109/ECCEEurope62508.2024.10751954","citation":{"short":"R. Unruh, J. Böcker, F. Schafmeister, in: Proceedings of the Energy Conversion Congress & Expo (ECCE Europe), IEEE, 2024.","chicago":"Unruh, Roland, Joachim Böcker, and Frank Schafmeister. “Experimentally Verified 22 KW, 40 KHz LLC Resonant Converter Design with New Control for a 1 MW Cascaded H-Bridge Converter.” In Proceedings of the Energy Conversion Congress & Expo (ECCE Europe). IEEE, 2024. https://doi.org/10.1109/ECCEEurope62508.2024.10751954.","ieee":"R. Unruh, J. Böcker, and F. Schafmeister, “Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter,” presented at the Energy Conversion Congress & Expo (ECCE Europe), Darmstadt, 2024, doi: 10.1109/ECCEEurope62508.2024.10751954.","apa":"Unruh, R., Böcker, J., & Schafmeister, F. (2024). Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter. Proceedings of the Energy Conversion Congress & Expo (ECCE Europe). Energy Conversion Congress & Expo (ECCE Europe), Darmstadt. https://doi.org/10.1109/ECCEEurope62508.2024.10751954","bibtex":"@inproceedings{Unruh_Böcker_Schafmeister_2024, title={Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter}, DOI={10.1109/ECCEEurope62508.2024.10751954}, booktitle={Proceedings of the Energy Conversion Congress & Expo (ECCE Europe)}, publisher={IEEE}, author={Unruh, Roland and Böcker, Joachim and Schafmeister, Frank}, year={2024} }","ama":"Unruh R, Böcker J, Schafmeister F. Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter. In: Proceedings of the Energy Conversion Congress & Expo (ECCE Europe). IEEE; 2024. doi:10.1109/ECCEEurope62508.2024.10751954","mla":"Unruh, Roland, et al. “Experimentally Verified 22 KW, 40 KHz LLC Resonant Converter Design with New Control for a 1 MW Cascaded H-Bridge Converter.” Proceedings of the Energy Conversion Congress & Expo (ECCE Europe), IEEE, 2024, doi:10.1109/ECCEEurope62508.2024.10751954."},"file_date_updated":"2025-02-14T15:32:17Z","conference":{"end_date":"2024-09-06","location":"Darmstadt","start_date":"2024-09-02","name":" Energy Conversion Congress & Expo (ECCE Europe)"},"status":"public","has_accepted_license":"1","publisher":"IEEE","_id":"58648","ddc":["620"],"user_id":"71291"},{"date_created":"2025-02-18T14:39:06Z","type":"journal_article","department":[{"_id":"172"}],"publication":"Journal of Strength & Conditioning Research","citation":{"ama":"Benjaminse A, Nijmeijer EM, Gokeler A, Broekhaar DC, Cortes N. Motivation Unraveled: Giving Choice to Football Players to Improve Anterior Cruciate Ligament Injury Prevention. Journal of Strength &amp; Conditioning Research. Published online 2024. doi:10.1519/jsc.0000000000004912","bibtex":"@article{Benjaminse_Nijmeijer_Gokeler_Broekhaar_Cortes_2024, title={Motivation Unraveled: Giving Choice to Football Players to Improve Anterior Cruciate Ligament Injury Prevention}, DOI={10.1519/jsc.0000000000004912}, journal={Journal of Strength &amp; Conditioning Research}, publisher={Ovid Technologies (Wolters Kluwer Health)}, author={Benjaminse, Anne and Nijmeijer, Eline M. and Gokeler, Alli and Broekhaar, Dara C. and Cortes, Nelson}, year={2024} }","mla":"Benjaminse, Anne, et al. “Motivation Unraveled: Giving Choice to Football Players to Improve Anterior Cruciate Ligament Injury Prevention.” Journal of Strength &amp; Conditioning Research, Ovid Technologies (Wolters Kluwer Health), 2024, doi:10.1519/jsc.0000000000004912.","chicago":"Benjaminse, Anne, Eline M. Nijmeijer, Alli Gokeler, Dara C. Broekhaar, and Nelson Cortes. “Motivation Unraveled: Giving Choice to Football Players to Improve Anterior Cruciate Ligament Injury Prevention.” Journal of Strength &amp; Conditioning Research, 2024. https://doi.org/10.1519/jsc.0000000000004912.","short":"A. Benjaminse, E.M. Nijmeijer, A. Gokeler, D.C. Broekhaar, N. Cortes, Journal of Strength &amp; Conditioning Research (2024).","apa":"Benjaminse, A., Nijmeijer, E. M., Gokeler, A., Broekhaar, D. C., & Cortes, N. (2024). Motivation Unraveled: Giving Choice to Football Players to Improve Anterior Cruciate Ligament Injury Prevention. Journal of Strength &amp; Conditioning Research. https://doi.org/10.1519/jsc.0000000000004912","ieee":"A. Benjaminse, E. M. Nijmeijer, A. Gokeler, D. C. Broekhaar, and N. Cortes, “Motivation Unraveled: Giving Choice to Football Players to Improve Anterior Cruciate Ligament Injury Prevention,” Journal of Strength &amp; Conditioning Research, 2024, doi: 10.1519/jsc.0000000000004912."},"abstract":[{"text":"Abstract\r\n Benjaminse, A, Nijmeijer, EM, Gokeler, A, Broekhaar, DC, and Cortes, N. Motivation unraveled: giving choice to football players to improve anterior cruciate ligament injury prevention. J Strength Cond Res XX(X): 000–000, 2024—Providing athletes some control over a training session facilitates motor skill acquisition. This is a promising concept to use in anterior cruciate ligament (ACL) injury prevention, as the key for risk reduction is to improve quality of movement. The goal of this study was to better understand why improved motor learning occurred when football players had the opportunity to choose when to receive feedback when practicing sidestep cutting (SSC) movements. Healthy male recreational football players (n = 22, 22.9 ± 1.7 years, 185.5 ± 7.2 cm, 79.3 ± 9.2 kg) were included and assigned to the self-control (SC) or the yoked (YK) group. The players performed anticipated and unanticipated SSC. They received video instructions and were instructed to “copy the movement of the model to the best of their ability.” During the training blocks, the SC group could ask for feedback, whereas the YK group could not. Cutting movement assessment scores (CMAS) were measured to test quality of movement and the Intrinsic Motivation Inventory was administered to measure constructs of motivation. In the anticipated condition, SC group showed better scores in immediate post and the retention test compared with pretest (p < 0.001), whereas the YK group showed worse scores in the retention test compared with immediate posttest (p = 0.001). Perceived competence (p = 0.017) and self-efficacy (p = 0.032) were consistent factors that correlated with improved CMAS in the SC group. This has given us innovative insights into underlying mechanisms optimizing the quality of movement, necessary to improve current ACL injury prevention approaches.","lang":"eng"}],"_id":"58695","language":[{"iso":"eng"}],"publisher":"Ovid Technologies (Wolters Kluwer Health)","doi":"10.1519/jsc.0000000000004912","user_id":"46","status":"public","title":"Motivation Unraveled: Giving Choice to Football Players to Improve Anterior Cruciate Ligament Injury Prevention","year":"2024","publication_identifier":{"issn":["1064-8011"]},"author":[{"first_name":"Anne","last_name":"Benjaminse","full_name":"Benjaminse, Anne"},{"full_name":"Nijmeijer, Eline M.","first_name":"Eline M.","last_name":"Nijmeijer"},{"full_name":"Gokeler, Alli","first_name":"Alli","last_name":"Gokeler"},{"first_name":"Dara C.","last_name":"Broekhaar","full_name":"Broekhaar, Dara C."},{"full_name":"Cortes, Nelson","last_name":"Cortes","first_name":"Nelson"}],"date_updated":"2025-02-18T14:39:48Z","publication_status":"published"},{"citation":{"mla":"Rikken, Koen T. H., et al. “Increased Visual Attentional Demands Alter Lower Extremity Sidestep Cutting Kinematics in Male Basketball Players.” International Journal of Sports Physical Therapy, vol. 19, no. 11, International Journal of Sports Physical Therapy, 2024, doi:10.26603/001c.124804.","ama":"Rikken KTH, Panneman T, Vercauteren F, Gokeler A, Benjaminse A. Increased Visual Attentional Demands Alter Lower Extremity Sidestep Cutting Kinematics in Male Basketball Players. International Journal of Sports Physical Therapy. 2024;19(11). doi:10.26603/001c.124804","bibtex":"@article{Rikken_Panneman_Vercauteren_Gokeler_Benjaminse_2024, title={Increased Visual Attentional Demands Alter Lower Extremity Sidestep Cutting Kinematics in Male Basketball Players}, volume={19}, DOI={10.26603/001c.124804}, number={11}, journal={International Journal of Sports Physical Therapy}, publisher={International Journal of Sports Physical Therapy}, author={Rikken, Koen T.H. and Panneman, Tom and Vercauteren, Fabian and Gokeler, Alli and Benjaminse, Anne}, year={2024} }","apa":"Rikken, K. T. H., Panneman, T., Vercauteren, F., Gokeler, A., & Benjaminse, A. (2024). Increased Visual Attentional Demands Alter Lower Extremity Sidestep Cutting Kinematics in Male Basketball Players. International Journal of Sports Physical Therapy, 19(11). https://doi.org/10.26603/001c.124804","ieee":"K. T. H. Rikken, T. Panneman, F. Vercauteren, A. Gokeler, and A. Benjaminse, “Increased Visual Attentional Demands Alter Lower Extremity Sidestep Cutting Kinematics in Male Basketball Players,” International Journal of Sports Physical Therapy, vol. 19, no. 11, 2024, doi: 10.26603/001c.124804.","short":"K.T.H. Rikken, T. Panneman, F. Vercauteren, A. Gokeler, A. Benjaminse, International Journal of Sports Physical Therapy 19 (2024).","chicago":"Rikken, Koen T.H., Tom Panneman, Fabian Vercauteren, Alli Gokeler, and Anne Benjaminse. “Increased Visual Attentional Demands Alter Lower Extremity Sidestep Cutting Kinematics in Male Basketball Players.” International Journal of Sports Physical Therapy 19, no. 11 (2024). https://doi.org/10.26603/001c.124804."},"_id":"58702","publisher":"International Journal of Sports Physical Therapy","user_id":"46","volume":19,"status":"public","date_created":"2025-02-18T14:51:11Z","type":"journal_article","department":[{"_id":"172"}],"publication":"International Journal of Sports Physical Therapy","issue":"11","abstract":[{"lang":"eng","text":" Background In basketball, changing direction is one of the primary mechanisms of anterior cruciate ligament (ACL) injury, often occurring within complex game situations with high cognitive demands. It is unknown how visual attention affects sidestep cutting kinematics during the entire energy absorption phase of the cut in an ecologically valid environment. Purpose The purpose of this research was to study the effect of added cognitive load, in the form of increased visual attentional demands, on sidestep cutting kinematics during the energy absorption phase of the cut in an ecologically valid environment. Study Design Crossover Study Methods Fifteen male basketball players (aged 22.1 ± 2.3) performed ten sidestep cutting movements without (BASE) and with (VIS) a visual attention dual task. 3D kinematics of the hip, knee and ankle were recorded utilizing Xsens IMU motion capture. Temporal kinematics were analyzed using Statistical Parametric Mapping. Discrete time point kinematics were additionally analyzed at initial contact (IC) and at peak knee flexion utilizing paired t-tests. Effect sizes were calculated. Results Hip flexion was significantly reduced in the VIS condition compared to the BASE condition (p<0.01), including at IC (VIS 35.0° ± 7.2°, BASE 40.7° ± 4.9°, p=0.02, d=0.92) and peak (VIS 37.8° ± 9.7°, BASE 45.5° ± 6.9°, p=0.001, d=0.90). Knee flexion was significantly reduced in the VIS condition, in comparison to the BASE condition (p<0.01), at peak (VIS 59.9° ± 7.5°, BASE 64.1° ± 7.4°, p=0.001, d=0.55). Conclusion The addition of visual attention during sidestep cutting altered lower limb kinematics, which may increase ACL injury risk. It is suggested that ACL injury risk screening and prevention should include sidestep cutting with visual attentional demands, in order to mimic the cognitive demands of the sports environment. Level of Evidence 3 "}],"language":[{"iso":"eng"}],"doi":"10.26603/001c.124804","year":"2024","title":"Increased Visual Attentional Demands Alter Lower Extremity Sidestep Cutting Kinematics in Male Basketball Players","publication_identifier":{"issn":["2159-2896"]},"author":[{"full_name":"Rikken, Koen T.H.","last_name":"Rikken","first_name":"Koen T.H."},{"first_name":"Tom","last_name":"Panneman","full_name":"Panneman, Tom"},{"full_name":"Vercauteren, Fabian","last_name":"Vercauteren","first_name":"Fabian"},{"last_name":"Gokeler","first_name":"Alli","full_name":"Gokeler, Alli"},{"first_name":"Anne","last_name":"Benjaminse","full_name":"Benjaminse, Anne"}],"publication_status":"published","date_updated":"2025-02-18T14:51:20Z","intvolume":" 19"},{"_id":"57499","page":"53–59","volume":22,"user_id":"38240","conference":{"end_date":"2023-09-28","start_date":"2023-09-26","name":"Kleinheubacher Berichte 2023","location":"Miltenberg"},"status":"public","citation":{"short":"J. Maalouly, D. Hemker, C. Hedayat, M. Olbrich, S. Lange, H. Mathis, Advances in Radio Science 22 (2024) 53–59.","chicago":"Maalouly, J., D. Hemker, C. Hedayat, M. Olbrich, Sven Lange, and H. Mathis. “Using Autoencoders to Classify EMC Problems in Electronic System Development.” Advances in Radio Science 22 (2024): 53–59. https://doi.org/10.5194/ars-22-53-2024.","apa":"Maalouly, J., Hemker, D., Hedayat, C., Olbrich, M., Lange, S., & Mathis, H. (2024). Using Autoencoders to Classify EMC Problems in Electronic System Development. Advances in Radio Science, 22, 53–59. https://doi.org/10.5194/ars-22-53-2024","ieee":"J. Maalouly, D. Hemker, C. Hedayat, M. Olbrich, S. Lange, and H. Mathis, “Using Autoencoders to Classify EMC Problems in Electronic System Development,” Advances in Radio Science, vol. 22, pp. 53–59, 2024, doi: 10.5194/ars-22-53-2024.","ama":"Maalouly J, Hemker D, Hedayat C, Olbrich M, Lange S, Mathis H. Using Autoencoders to Classify EMC Problems in Electronic System Development. Advances in Radio Science. 2024;22:53–59. doi:10.5194/ars-22-53-2024","bibtex":"@article{Maalouly_Hemker_Hedayat_Olbrich_Lange_Mathis_2024, title={Using Autoencoders to Classify EMC Problems in Electronic System Development}, volume={22}, DOI={10.5194/ars-22-53-2024}, journal={Advances in Radio Science}, author={Maalouly, J. and Hemker, D. and Hedayat, C. and Olbrich, M. and Lange, Sven and Mathis, H.}, year={2024}, pages={53–59} }","mla":"Maalouly, J., et al. “Using Autoencoders to Classify EMC Problems in Electronic System Development.” Advances in Radio Science, vol. 22, 2024, pp. 53–59, doi:10.5194/ars-22-53-2024."},"project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"language":[{"iso":"eng"}],"main_file_link":[{"url":"https://ars.copernicus.org/articles/22/53/2024/"}],"doi":"10.5194/ars-22-53-2024","author":[{"first_name":"J.","last_name":"Maalouly","full_name":"Maalouly, J."},{"full_name":"Hemker, D.","last_name":"Hemker","first_name":"D."},{"full_name":"Hedayat, C.","first_name":"C.","last_name":"Hedayat"},{"first_name":"M.","last_name":"Olbrich","full_name":"Olbrich, M."},{"first_name":"Sven","last_name":"Lange","orcid":"0009-0007-9150-2266 ","full_name":"Lange, Sven","id":"38240"},{"full_name":"Mathis, H.","last_name":"Mathis","first_name":"H."}],"title":"Using Autoencoders to Classify EMC Problems in Electronic System Development","year":"2024","intvolume":" 22","date_updated":"2025-03-17T12:13:32Z","publication_status":"published","date_created":"2024-11-29T10:05:47Z","department":[{"_id":"59"},{"_id":"485"}],"type":"journal_article","publication":"Advances in Radio Science"},{"abstract":[{"lang":"eng","text":"Füllstoffe erhöhen die Wärmeleitfähigkeit von im Fused Filament Fabrication (FFF) Verfahren hergestellten Strukturen. Neben der Füllstoffart ist dabei der Füllstoffvolumenanteil relevant. Der maximal verarbeitbare Füllstoffanteil ist hier gegenüber vergleichbaren Spritzgussmaterialien reduziert. An der Kunststofftechnik Paderborn (KTP) wurde untersucht, welchen Einfluss spezifische Füllstoffe auf die Materialeigenschaften haben. Die additive Fertigung (AM) gewinnt durch stetig steigende Anforderungen an die Bauteilkomplexität und Fertigungsflexibilität nicht nur im Prototypenbau an Bedeutung [1]. Eines der am weitesten verbreiteten additiven Fertigungsverfahren ist dabei das Fused Filament Fabrication (FFF) Verfahren [2]. Bei diesem Verfahren wird ein Kunststofffilament in eine temperierte Düse gefördert, dort aufgeschmolzen und in einer charakteristischen, näherungsweise elliptischen Stranggeometrie ausgetragen. Durch die Verfahrbewegung der Plastifiziereinheit und der Bauplattform können dreidimensionale Strukturen gefertigt werden [3]. Das FFF-Verfahren zeichnet sich unter anderem durch die Verarbeitung einer großen Bandbreite an thermoplastischen Kunststoffen aus [4]. Dies ermöglicht eine anwendungsspezifische Materialauswahl. In diesem Zusammenhang stellt auch die Modifizierung mit Füllstoffen eine Möglichkeit dar, die Materialeigenschaften gezielt einzustellen. Die Füllstoffe können dabei nach dem jeweiligen Aspektverhältnis in Kugeln, Plättchen oder Fasern unterteilt werden [5]. Die Steigerung der Wärmeleitfähigkeit von im FFF-Verfahren hergestellten Strukturen ist aktuell Stand der Forschung, gewinnt jedoch vor dem Hintergrund der aktuellen Herausforderungen, z. B. in der Elektrotechnik, an Bedeutung [6]. Die Kunststofftechnik Paderborn (KTP) befasst sich am Direct Manufacturing Research Center (DMRC) – Academic derzeit mit der Entwicklung und Verarbeitung wärmeleitfähiger Kunststoffe für das FFF-Verfahren. Der Fokus liegt dabei auf den material- und prozessseitigen Einflüssen auf die Materialeigenschaften. Für die Erzielung hoher Wärmeleitfähigkeiten sind dabei die Wahl der Füllstoffart und des Füllstoffvolumenanteils hervorzuheben. Kenntnisse über die Auswirkungen der Füllstoffzugabe und dem Zusammenspiel zwischen den mechanischen Eigenschaften und der Wärmeleitfähigkeit sind für die anwendungsgerechte Bauteilauslegung essenziell. Das Vorgehen Zur Analyse der Wärmeleitfähigkeit wurde eine am DMRC – Academic entwickelte Methode verwendet. Diese basiert auf der Fertigung von zylindrischen Probekörpern, welche im FFF-Verfahren entlang der Längsachse parallel zu den drei Koordinatenrichtungen X, Y und Z orientiert gefertigt werden. Im Anschluss werden die Probekörper spanend auf das für die Messung erforderliche Maß nachbearbeitet. Dadurch können fertigungsbedingte Einflüsse auf die Geometrie und Oberflächengüte reduziert und damit die Messgenauigkeit erhöht werden (Bild 2). Durch die Fertigung von drei unterschiedlichen Orientierungen kann weiterhin eine resultierende Anisotropie bewertet werden. Die auf einem Doppelschneckenextruder (Thermo Fisher Process11) hergestellten Filamente wurden nachfolgend mit einem Gewo HTP260 (Gewo Feinmechanik) verarbeitet. Die entsprechenden FFF-Prozessparameter sind in Tabelle 1 dargestellt. Dabei ist anzumerken, dass eine Bauraumtemperierung im Allgemeinen und der auf 120 °C beheizte Bauraum für die Verarbeitung der betrachteten Materialien im Speziellen zur prozesssicheren FFF-Fertigung unerlässlich sind. Die Analyse der Wärmeleitfähigkeit erfolgte schließlich mittels der Laser-Flash-Analyse (LFA) (Netzsch LFA 467 HyperFlash) entsprechend der DIN EN ISO 22007-4 [7]. Für die Bewertung der mechanischen Eigenschaften wurden Probekörper entsprechend der DIN EN ISO 527-2 Typ 1BA unter Verwendung einer Kolben-Spritzgussmaschine (Thermo Fisher Mini Jet Pro) gefertigt und mit einer Zugprüfmaschine (Zwick/Roell ProLine Z 010) geprüft, um den grundlegenden Füllstoffeinfluss bewerten zu können [8]. Für die Untersuchungen wurde ein Kunststoff-Compound basierend auf Polybutylenterephthalat (PBT) ohne (PBTx) und mit (PBTxa) Verarbeitungshilfe verwendet. Als Füllstoffe kamen zwei wärmeleitfähige plättchenförmige Füllstoffe (Bezeichnung: F1 und F2) zur Anwendung, welche einen mittleren Partikeldurchmesser (d50) für F1 von 5,0 µm und für F2 von 7,9 µm aufweisen. Ergebnisse der Zugversuche Die Auswertung der mechanischen Eigenschaften zeigt den Einfluss des Füllstoffvolumenanteils anhand des Elastizitätsmoduls und der Bruchdehnung auf (Bild 3). Die resultierende Festigkeit wird durch die geringe Verstärkungswirkung der Plättchen hingegen nur geringfügig beeinflusst und ist folglich nicht gesondert aufgeführt. Im Gegensatz dazu erhöht sich die Steifigkeit mit steigendem Füllstoffvolumenanteil, was auf den erhöhten E-Modul der Füllstoffe gegenüber der Kunststoffmatrix zurückzuführen ist. So kann durch die Füllstoffzugabe mit einem Volumenanteil in Höhe von 22 {%} der E-Modul für das Material PBTxa-F1 gegenüber der reinen Kunststoffmatrix um den Faktor 2,7 gesteigert werden. Hingegen nimmt die Bruchdehnung mit steigendem Füllstoffvolumenanteil ab. Diese mit dem Volumenanteil positiv korrelierende Versprödung stellt einen begrenzenden Faktor bei der Herstellung hochgefüllter Filamente dar. So neigen höher gefüllte Filamente eher zu einem Bruch bei der Herstellung und Verarbeitung. Dies resultiert in den vorliegenden maximalen Füllstoffvolumenanteilen, welche im Vergleich zu Spritzgussmaterialien deutlich reduziert sind. Eine weitere Erhöhung führt zu einer unzureichenden Prozessstabilität und damit zu einer unzureichenden Verarbeitungseignung für das FFF-Verfahren. Weiterhin zeigt sich, dass der Einfluss der verwendeten plättchenförmigen Füllstoffe für eine identische Kunststoffmatrix vergleichbar ist. Durch die Verwendung von Verarbeitungshilfen können die mechanischen Eigenschaften allerdings beeinflusst werden. Die Erhöhung des E-Moduls und der Bruchdehnung ist dabei auf die verbesserte Benetzung der Füllstoffpartikel und damit eine verbesserte Kunststoff-Füllstoff-Interaktion zurückzuführen. Bewertung der Wärmeleitfähigkeit Zur Darstellung der Ergebnisse der Wärmeleitfähigkeit wurden die Messergebnisse von je vier Probekörpern über die Prüftemperaturen zwischen 30 °C und 180 °C in 30 °C Inkrementen gemittelt (Bild 4). Die Ergebnisse zeigen eine positive Korrelation zwischen einem zunehmenden Füllstoffvolumenanteil und der Wärmeleitfähigkeit. Diese Steigerung ist wiederum abhängig von der jeweilig verwendeten Füllstoffart. Hierbei liefert das Material PBTx-F2-X eine vergleichbare Wärmeleitfähigkeit wie die Materialien PBTx-F1 und PBTxa-F1 in der jeweiligen Y-Orientierung. Die Unterschiede zwischen den beiden Materialien PBTx-F1 und PBTxa-F1 sind hingegen minimal und der Einfluss der Verarbeitungshilfe auf die Wärmeleitfähigkeit dementsprechend als vernachlässigbar anzusehen. Weiterhin ist eine anisotrope Wärmeleitfähigkeit für die mit Plättchen gefüllten Kunststoffe ersichtlich. Während die X-Orientierung (entlang der abgelegten Stränge) eine erhöhte Wärmeleitfähigkeit für alle Materialien liefert, ist diese für die Z-Orientierung (zwischen den Schichten) am geringsten. Gründe hierfür sind der Strangverbund sowie die Füllstofforientierung innerhalb der abgelegten Stränge. Dabei ist die aufgezeigte Anisotropie für den Füllstoff F2 im Vergleich zu F1 leicht reduziert und bestätigt den spezifischen Einfluss der Füllstoffart. Auf Basis der Ergebnisse können allgemein drei charakteristische Orientierungen zur Bewertung der Wärmeleitfähigkeit erfasst werden. Für die Bauteilauslegung ist der aufgezeigte Einfluss plättchenförmiger Füllstoffe auf die sich einstellende Anisotropie von im FFF-Verfahren gefertigten Strukturen zwingend zu beachten. Ausblick Die angeführten Untersuchungen zeigen, dass die Verwendung von plättchenförmigen Füllstoffen in Abhängigkeit von dem Füllstoffvolumenanteil zu einer Beeinflussung der Materialeigenschaften führt. Die dargelegten Ergebnisse stellen in diesem Kontext eine Grundlage zur Bewertung des Zusammenhangs zwischen den mechanischen Eigenschaften und der Wärmeleitfähigkeit dar. Insbesondere die Limitierung des Füllstoffvolumenanteils durch die erhöhte Versprödung ist hierbei anzuführen. Aktuelle Untersuchungen an der Kunststofftechnik Paderborn befassen sich mit der Betrachtung weiterer material- und prozessseitiger Einflussgrößen auf die Wärmeleitfähigkeit. Die generierten Daten sollen schließlich für die Entwicklung eines Modells zur Vorhersage der Wärmeleitfähigkeit von im FFF-Verfahren gefertigten Strukturen zusammengeführt werden."}],"publication":"Plastverarbeiter","citation":{"bibtex":"@article{Moritzer_Elsner_Salm_2024, title={Wie der Füllstoffvolumenanteil die Materialeigenschaften beeinflusst}, volume={2024}, journal={Plastverarbeiter}, author={Moritzer, Elmar and Elsner, Christian Lennart and Salm, Maximilian Karl Franz}, year={2024} }","ama":"Moritzer E, Elsner CL, Salm MKF. Wie der Füllstoffvolumenanteil die Materialeigenschaften beeinflusst. Plastverarbeiter. 2024;2024.","mla":"Moritzer, Elmar, et al. “Wie Der Füllstoffvolumenanteil Die Materialeigenschaften Beeinflusst.” Plastverarbeiter, vol. 2024, 2024.","chicago":"Moritzer, Elmar, Christian Lennart Elsner, and Maximilian Karl Franz Salm. “Wie Der Füllstoffvolumenanteil Die Materialeigenschaften Beeinflusst.” Plastverarbeiter 2024 (2024).","short":"E. Moritzer, C.L. Elsner, M.K.F. Salm, Plastverarbeiter 2024 (2024).","ieee":"E. Moritzer, C. L. Elsner, and M. K. F. Salm, “Wie der Füllstoffvolumenanteil die Materialeigenschaften beeinflusst,” Plastverarbeiter, vol. 2024, 2024.","apa":"Moritzer, E., Elsner, C. L., & Salm, M. K. F. (2024). Wie der Füllstoffvolumenanteil die Materialeigenschaften beeinflusst. Plastverarbeiter, 2024."},"keyword":["Compoundieren","Fused Filament Fabrication"],"type":"journal_article","department":[{"_id":"9"},{"_id":"321"},{"_id":"624"},{"_id":"367"}],"date_created":"2025-03-25T10:18:06Z","date_updated":"2025-03-27T10:56:02Z","intvolume":" 2024","status":"public","year":"2024","title":"Wie der Füllstoffvolumenanteil die Materialeigenschaften beeinflusst","author":[{"id":"20531","last_name":"Moritzer","first_name":"Elmar","full_name":"Moritzer, Elmar"},{"last_name":"Elsner","first_name":"Christian Lennart","full_name":"Elsner, Christian Lennart","id":"70729"},{"id":"57929","first_name":"Maximilian Karl Franz","last_name":"Salm","full_name":"Salm, Maximilian Karl Franz"}],"user_id":"59363","volume":2024,"_id":"59131","language":[{"iso":"eng"}]},{"issue":"21","publication":"Polymers","citation":{"mla":"Oldemeier, Jan Philipp, and Volker Schöppner. “Analysis of the Dispersive and Distributive Mixing Effect of Screw Elements on the Co-Rotating Twin-Screw Extruder with Particle Tracking.” Polymers, vol. 16, no. 21, 2024, doi:10.3390/polym16212952.","bibtex":"@article{Oldemeier_Schöppner_2024, title={Analysis of the Dispersive and Distributive Mixing Effect of Screw Elements on the Co-Rotating Twin-Screw Extruder with Particle Tracking}, volume={16}, DOI={10.3390/polym16212952}, number={21}, journal={Polymers}, author={Oldemeier, Jan Philipp and Schöppner, Volker}, year={2024} }","ama":"Oldemeier JP, Schöppner V. Analysis of the Dispersive and Distributive Mixing Effect of Screw Elements on the Co-Rotating Twin-Screw Extruder with Particle Tracking. Polymers. 2024;16(21). doi:10.3390/polym16212952","ieee":"J. P. Oldemeier and V. Schöppner, “Analysis of the Dispersive and Distributive Mixing Effect of Screw Elements on the Co-Rotating Twin-Screw Extruder with Particle Tracking,” Polymers, vol. 16, no. 21, 2024, doi: 10.3390/polym16212952.","apa":"Oldemeier, J. P., & Schöppner, V. (2024). Analysis of the Dispersive and Distributive Mixing Effect of Screw Elements on the Co-Rotating Twin-Screw Extruder with Particle Tracking. Polymers, 16(21). https://doi.org/10.3390/polym16212952","chicago":"Oldemeier, Jan Philipp, and Volker Schöppner. “Analysis of the Dispersive and Distributive Mixing Effect of Screw Elements on the Co-Rotating Twin-Screw Extruder with Particle Tracking.” Polymers 16, no. 21 (2024). https://doi.org/10.3390/polym16212952.","short":"J.P. Oldemeier, V. Schöppner, Polymers 16 (2024)."},"abstract":[{"lang":"eng","text":"Compounding is an important step in processing base polymers and is used to incorporate various additives into a polymer. For this purpose, different screw elements are used for dispersive and distributive mixing on a co-rotating twin-screw extruder. Optimising the screw configuration requires precise knowledge of the screw elements’ mixing properties, which have not been thoroughly investigated. This study analyses the mixing behaviour of individual screw elements regarding dispersive and distributive mixing using 3D CFD flow simulations with subsequent particle tracking. For distributive mixing, the particle distribution behind the screw elements in the XY plane is analysed and the mixing index MQ, which relates the standard deviation and the mean value of the triangular areas between the particles, is calculated. For dispersive mixing, the maximum shear stress on the particle path and the integral of the shear stress over the residence time of each individual particle are determined. The results show that screw element geometry and rotation speed have a significant influence on dispersive and distributive mixing. In addition, better dispersive mixing is achievable with highly viscous materials. These findings enable the optimisation of the mixing zone of a co-rotating twin-screw extruder for the efficient mixing of mineral fillers."}],"quality_controlled":"1","date_created":"2025-03-25T10:19:50Z","keyword":["Compoundieren","disperses Mischen","distributives Mischen","Schneckenelemente"],"type":"journal_article","department":[{"_id":"9"},{"_id":"321"},{"_id":"367"}],"title":"Analysis of the Dispersive and Distributive Mixing Effect of Screw Elements on the Co-Rotating Twin-Screw Extruder with Particle Tracking","year":"2024","status":"public","author":[{"full_name":"Oldemeier, Jan Philipp","last_name":"Oldemeier","first_name":"Jan Philipp","id":"56781"},{"last_name":"Schöppner","first_name":"Volker","full_name":"Schöppner, Volker","id":"20530"}],"date_updated":"2025-03-27T12:56:35Z","intvolume":" 16","language":[{"iso":"eng"}],"_id":"59135","doi":"10.3390/polym16212952","user_id":"59363","volume":16}]