@inproceedings{4391, author = {Karau, Fabian and Leuer, Michael}, booktitle = {Fit für die Zukunft: Praktische Lösungen für die industrielle Automation}, isbn = {9783910103023}, location = {Bielefeld}, publisher = {Hochschule für Technik, Wirtschaft und Kultur Leipzig}, title = {{Recheneffiziente Implementierung einer approximierten modellprädiktiven Regelung auf einem Industrie-PC}}, doi = {10.33968/2024.32}, year = {2024}, } @article{4389, abstract = {Die rasant fortschreitende digitale Transformation eröffnet innovative Möglichkeiten zur Prävention und Gesundheitsförderung, insbesondere durch soziotechnische Innovationen. Digital unterstützte Interventionen dienen als erweiternde Werkzeuge zur Verbreitung gesundheitsrelevanter Informationen und zur Förderung des individuellen Empowerments und der Selbstwirksamkeit. Trotz ihres Potentials sind digitale Medien in der Community-bezogenen Prävention und Gesundheitsförderung mit Herausforderungen konfrontiert, wie der Notwendigkeit einer niedrigschwelligen Gestaltung und der Berücksichtigung technologischer Akzeptanzfaktoren. Menschen in prekären Lebenslagen, die häufig mit eingeschränktem Zugang und geringerer digitaler Kompetenz konfrontiert sind, könnten von zielgerichteten, an ihren spezifischen Bedarfen und Bedürfnissen ausgerichteten Maßnahmen profitieren. Gleichzeitig gilt es die Risiken einer unzureichenden digitalen Gesundheitskompetenz hervorzuheben, die sich negativ auf die Gesundheit auswirken können. Die Förderung der digitalen Gesundheitskompetenz erscheint daher als ein wesentliches Instrument zur Verbesserung der Gesundheitssituation von Menschen in prekären Lebenslagen. Dieser Artikel plädiert für eine evidenzbasierte und zielgerichtete Weiterentwicklung von digitalen Interventionen zur Gesundheitsförderung, die auf die Bedürfnisse von Menschen in prekären Lebenslagen abgestimmt sind, und betont die zentrale Rolle der digitalen Gesundheitskompetenz in diesem Prozess. Beispielhaft wird hierfür die Gruppe der Frühen Hilfen in den Blick genommen.}, author = {Wrona, Kamil Joseph and Heckes, Kolja Tobias and Aschentrup, Leona and Fischer, Florian}, issn = {1439-4421}, journal = {Das Gesundheitswesen}, publisher = {Georg Thieme Verlag KG}, title = {{Community-bezogene Prävention und Gesundheitsförderung: Förderung digitaler Gesundheitskompetenz bei Menschen in prekären Lebenslagen}}, doi = {10.1055/a-2283-4440}, year = {2024}, } @article{4278, abstract = { Photovoltaics (PV) is a key pillar of renewable energy supply. However, the climate and resource crisis make it necessary to implement further optimizations toward a circular economy in the PV industry. One strategy for saving resources and lowering carbon dioxide emissions is the reuse of modules (second-life PV). As part of this work, various tests were carried out with crystalline modules from two different manufacturers. The modules had already been transported to a recycling company and were originally intended for recycling. The measurements carried out provide a comprehensive assessment of the condition of the PV modules. In total, five different measurement methods were used, two of which related to short-term measurements under controlled laboratory conditions and three to long-term assessments under real conditions. The investigation illustrated that modules from the recycling company have potential for reuse. However, it also showed that a clearly differentiated classification system is necessary due to module age- and environmental conditions-related degradation. Qualification and further long-term measurements should be implemented using a combination of measurement methods. }, author = {Schnatmann, Anna Katharina and Reimers, Tobi and Hüdepohl, Erik and Umlauf, Jonah and Kleinebekel, Pia and Schoden, Fabian and Schwenzfeier-Hellkamp, Eva}, issn = {2071-1050}, journal = {Sustainability}, keywords = {circular economy, crystalline photovoltaics, degradation, quality management, reuse, second-life PV, electroluminescence}, number = {3}, publisher = {MDPI AG}, title = {{Investigating the Technical Reuse Potential of Crystalline Photovoltaic Modules with Regard to a Recycling Alternative}}, doi = {10.3390/su16030958}, volume = {16}, year = {2024}, } @article{4387, abstract = {Hintergrund: Fachkräfte für den Bereich Digital Public Health (DiPH) sind für eine erfolgreiche digitale Transformation im Sozial- und Gesundheitswesen notwendig. Unklar ist jedoch, inwiefern im Public-Health-(PH-)Studium DiPH-bezogene Inhalte vermittelt werden. Methode: Mittels systematischer Modulhandbuchanalyse wurden DiPH-bezogene Inhalte von akkreditierten PH-orientierten Studiengängen öffentlicher Hochschulen und Universitäten in Deutschland analysiert. Über die Plattform „Hochschulkompass“ und Mitgliedsstudiengänge der Deutschen Gesellschaft für Public Health (DGPH) wurden 422 Studiengänge identifiziert. Eingeschlossene Modulhandbücher wurden inhaltsanalytisch mittels MAXQDA ausgewertet. Ergebnisse: Lediglich 10 Bachelor- und 6 Masterstudiengänge weisen einen inhaltlichen DiPH-Bezug auf. Sie sind in ihren Schwerpunkten heterogen und unterschiedlichen PH-Teilbereichen zuzuordnen („Methoden, Definition, Geschichte und Sozialmedizin“ = 5; „Gesundheitsmanagement“ = 5; „Digital Health“ = 3; „Versorgungsforschung“ = 2; „Gesundheitskommunikation“ = 1). Zwischen dem wissenschaftlich gängigen Verständnis von DiPH und den darauf bezogenen Inhalten in den Modulhandbüchern zeigen sich Unterschiede. Die identifizierten Inhalte fokussieren eher technische und geringfügiger sozial- und gesundheitswissenschaftliche Bereiche. Diskussion: Die heterogenen Studiengänge mit DiPH-Bezug ermöglichen akademischen PH-Fachkräften eine spezifische Profilierung. Um umfassende Kompetenzen im Bereich DiPH zu erlangen, bedarf es eines weiteren Ausbaus entsprechender Module, die für den jeweiligen Studiengang relevant sind. Die Ergebnisse könnten zur (Weiter‑)Entwicklung geeigneter Module sowie eines DiPH-Kerncurriculums dienen.}, author = {Albrecht, Joanna and Maaß, Laura and Tokgöz, Pinar and Hrynyschyn, Robert and Wrona, Kamil Joseph and Stark, Anna Lea and Dunsche, Celina and Fischer, Florian and Schmidt, Annalena and Schulz, Henriette and Hidding, Sarah and Dockweiler, Christoph}, issn = {1437-1588}, journal = {Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz}, keywords = {Lehre, Digitalisierung, Deutsche Gesellschaft für Public Health, Gesundheitswissenschaften, Studiengang}, publisher = {Springer Science and Business Media LLC}, title = {{Wie viel Digital Public Health steckt in Public-Health-Studiengängen? Eine systematische Modulhandbuchanalyse von Vollzeitstudiengängen an öffentlichen Hochschulen und Universitäten in Deutschland}}, doi = {10.1007/s00103-024-03844-2}, year = {2024}, } @article{4383, abstract = {Background: Learning arrangements in health care profession education are increasingly taking place in digital environments. Virtual reality (VR) in nursing education, as a digital element, is the subject of controversial debate. On one hand, it supports the authenticity of case studies by adding realistic perspectives and information. On the other hand, the costs of developing and maintaining software and hardware hinder its long-term implementation. Based in the German context, our aim is to promote the adoption of innovative digital methods in nursing education and to offer invaluable experiences from the field. Methods: In this paper, we describe our findings and insights from two different research projects focused on the incorporation of digital tools, particularly VR, into nursing education. Results: Starting with a brief recapitulation of the projects, we elucidate pedagogical strategies for embedding VR-driven scenarios in nursing education. Based on our experiences during the projects, we identify various positive aspects, such as changing perspective and simulating acute situations. Key findings: Although potential drawbacks remain, we advocate the long-term implementation and specific use of VR at the interface between theory and practice. Nevertheless, it is crucial to establish regular evaluation, observing the value of digitalisation, especially VR, for nursing education. }, author = {Pfeifer, Lydia Sophie and Fries, Sophia and Stirner, Alexander and Nagel, Lisa and Cohnen, Christian and Aschentrup, Leona and Schönbeck, Marleen and Nauerth, Annette and Raschper, Patrizia and Herzig, Tim Christian and Wrona, Kamil Joseph}, issn = {2039-4403}, journal = {Nursing Reports}, keywords = {virtual reality, 360-degree video, digital tools, nursing education, VR-driven scenarios, pedagogical strategies, digital methodologies, immersion, collaboration}, number = {1}, pages = {468--481}, publisher = {MDPI AG}, title = {{Positive Aspects and Potential Drawbacks of Implementing Digital Teaching/Learning Scenarios in Health Professions Using Nursing Education as an Example: A Research Report from Germany}}, doi = {10.3390/nursrep14010036}, volume = {14}, year = {2024}, } @inbook{4310, author = {Heckes, Kolja Tobias and Wrona, Kamil Joseph and Siegler, Marcel}, booktitle = {Junge Menschen in prekären Lebenslagen}, editor = {Middendorf, Tim and Parchow, Alexander}, isbn = {978-3-7799-7530-4}, pages = {446}, publisher = {Beltz Juventa}, title = {{Die Zugänglichkeit von Care-Technologien in den Frühen Hilfen}}, year = {2024}, } @article{4050, author = {Migenda, Nico and Möller, Ralf and Schenck, Wolfram}, issn = {00313203}, journal = {Pattern Recognition}, publisher = {Elsevier BV}, title = {{Adaptive local Principal Component Analysis improves the clustering of high-dimensional data}}, doi = {10.1016/j.patcog.2023.110030}, volume = {146}, year = {2024}, } @article{4201, abstract = {Background: Though still a young field of research, gamified digital interventions have demonstrated potential in exerting a favourable impact on health and overall well-being. With the increasing use of the internet and digital devices, the integration of game elements presents novel opportunities for preventing mental disorders and enhancing mental health. Hence, this review aims to assess the effectiveness of gamified interventions focusing on preventing mental disorders or promoting mental health among adults. Methods: Based on a scoping review across four databases (MEDLINE, Embase, PsycInfo and Web of Science), 7,953 studies were initially identified. After removing duplicates and screening titles, abstracts and full texts, 16 studies were identified as suitable for inclusion in a narrative synthesis of findings. We included interventional studies encompassing an intervention and a control group aiming to investigate the effectiveness of the use of gamified digital mental health interventions and the use of gamified digital elements. Results: Overall, positive effects of gamified interventions on mental health-related outcomes were identified. In particular, beneficial consequences for psychological well-being and depressive symptoms were observed in all studies. However, further outcomes, such as resilience, anxiety, stress or satisfaction with life, showed heterogenous findings. Most game elements used were reward, sensation and progress, whilst the quantity of elements was not consistent and, therefore, no substantiated conclusion regarding the (optimal) quantity or composition of game elements can be drawn. Further, the outcomes, measurements and analyses differed greatly between the 16 included studies making comparisons difficult. Conclusion: In summary, this review demonstrates the potential of integrating digital game elements on mental health and well-being with still a great gap of research. A taxonomy is needed to adequately address relevant game elements in the field of mental health promotion and prevention of mental disorders. Therefore, future studies should explicitly focus on the mechanisms of effect and apply rigorous study designs.}, author = {Aschentrup, Leona and Steimer, Pia Anna and Dadaczynski, Kevin and Mc Call, Timothy and Fischer, Florian and Wrona, Kamil Joseph}, issn = {1471-2458}, journal = {BMC Public Health}, number = {1}, publisher = {Springer Science and Business Media LLC}, title = {{Effectiveness of gamified digital interventions in mental health prevention and health promotion among adults: a scoping review}}, doi = {10.1186/s12889-023-17517-3}, volume = {24}, year = {2024}, } @inproceedings{4108, abstract = {Ziele des Workshops: Ziel des Workshops ist es, die Treiber und Hemmnisse für nachhaltige und gesundheitsförderliche Ernährung an Hochschulen, als ein spezifische Kontext mit Gemeinschaftsverpflegung, aus den Perspektiven von Stakeholdern wie Studierenden, Beschäftigten, Hochschulleitung und Dienstleistern zu identifizieren und auf dieser Basis innovative Lösungskonzepte zu erarbeiten. Die Ergebnisse sollen vor allem auch innovatives Transferpotenzial für andere Kontexte mit Gemeinschaftsverpflegung bieten; im Bildungsbereich und darüber hinaus. Gleichwohl betrachten wir das Anwendungsfeld der Gemeinschaftsverpflegung als besonders spannend, da sich hier auch ein großes Potenzial generationenübergreifender Austausch- und Lernprozesse bietet. Struktur (inkl. Lehr- und Lernaktivität): Als Auftakt des Workshops erfolgt eine kurze strukturelle Orientierung für die Teilnehmenden entlang der in der aktuellen wissenschaftlichen Literatur diskutierten Kernprinzipien nachhaltiger und gesundheitsorientierter Ernährungssysteme (max. 15 Min.). Auf diese Weise soll eine ganzheitliche Perspektive auf das Themenfeld eröffnet werden. Diese Prinzipien bilden den Rahmen des Workshops und sollen die Diskussion, die aus der Perspektive verschiedener Stakeholder im Workshop motiviert wird, flankieren und strukturieren (Lehraktivität). In einem interaktiven Prozess erarbeiten Teilnehmende daraufhin in Diskussionsgruppen zunächst Treiber und Hemmnisse für nachhaltige und gesundheitsorientierte Ernährung an Hochschulen als ein typischer Kontext für Gemeinschaftsverpflegung (ca. 40 Min.). Die Gruppenergebnisse werden anschließend präsentiert und gemeinsam reflektiert (ca. 20 Min), um perspektivisch zu innovativen Lösungsansätzen zu gelangen und damit neues Verbesserungspotenzial zu erschließen (Lernaktivität). Methoden: Der moderierte Workshop wird mit der interaktiven Methode "Perspektiven-Wechsel-Werkstatt" durchgeführt. Die Teilnehmenden nehmen die Perspektiven wichtiger Stakeholder wie Studierende, Beschäftigte, Hochschulleitung und Dienstleister ein und werden auch daraufhin sensibilisiert, spezifische Diversitätsmerkmale mit zu betrachten und in den Diskurs mit einzubeziehen. Es werden entsprechende „Perspektiventische“ angeboten, an denen die Treiber und Hemmnisse auf dem Weg hin zu nachhaltigeren und gesundheitsförderlichen Ernährungssystemen im Dialog erörtert werden. Die Ergebnisse werden im Anschluss veröffentlicht und können von Hochschulen und anderen Institutionen für die Entwicklung von nachhaltigen Ernährungskonzepten genutzt werden.}, author = {Wrona, Kamil Joseph and Exner, Anne-Kathrin and Kobert, Maria and Süße, Thomas}, keywords = {Workshop, Perspektivenwechselwerkstatt}, location = {Hannover}, title = {{Treiber und Hemmnisse auf dem Weg hin zu einer nachhaltigen und gesundheitsförderlichen Ernährung an Hochschulen: Ein Workshop zur Integration heterogener Perspektiven}}, year = {2023}, } @techreport{4109, abstract = {Background: Universities have a pivotal role in shaping future societal norms, including sustainable and health-promoting eating habits. However, the integration of these practices into university communal catering faces numerous challenges. This study aims to explore diverse barriers and drivers influencing the adoption of sustainable nutrition in university settings and to propose targeted recommendations for action. Methods: A qualitative research approach was adopted, centring around a participatory workshop that included six stakeholders from various backgrounds. Participants were asked to adopt perspectives different from their own in order to identify and discuss key issues in implementing sustainable nutrition. The results of the discussions were analyzed thematically to determine the primary drivers and barriers. Results: The study identified a complex interplay of factors affecting sustainable nutrition in university settings. Key barriers included financial constraints, diverse dietary needs, educational gaps, and logistical challenges. Conversely, drivers encompassed the potential role of universities as pioneers in sustainable eating, the influence of social dynamics, and the importance of multifaceted stakeholder engagement. The findings suggest that a holistic approach is needed to address these issues, including educational initiatives, policy support, economic incentives, and scientific research. Conclusion: This research underscores the need for a comprehensive strategy to implement sustainable and health-promoting nutrition in university communal catering. Recommendations for action are presented from political, economic, and scientific perspectives, emphasizing the importance of multi-stakeholder collaboration. The study contributes to the understanding of sustainable nutrition in educational institutions and provides a foundation for future initiatives aimed at fostering healthier and more sustainable eating habits in university communities.}, author = {Wrona, Kamil Joseph and Exner, Anne-Kathrin and Kobert, Maria and Süße, Thomas}, keywords = {sustainable nutrition, university catering, health promotion, multi-stakeholder approach}, pages = {13}, publisher = {Hochschule Bielefeld}, title = {{Drivers and barriers towards sustainable and health-promoting nutrition in higher education: workshop integrating heterogeneous perspectives: Results of a Changing Perspectives workshop}}, doi = {10.57720/4109}, year = {2023}, } @misc{2290, abstract = {— Please note: This is a revised version as the dataset contained an error in the previous version. In this version, the error in the dataset has been corrected. The old version is available here for reference: http://doi.org/10.57720/1956 — The experimental data published in this data set correspond to surface electromyographic recordings of the biceps and triceps muscles, as well as the elbow joint angle of several human subjects during the performance of various arm exercises under varying load situations. The data were originally recorded for the purpose of optimizing a musculoskeletal model of the upper arm with a focus on elbow movement in 2018 and 2019 as part of a research project at Bielefeld University of Applied Sciences, Germany. In the context of this publication, the data are made available to the scientific community.}, author = {Mechtenberg, Malte and Grimmelsmann, Nils and Meyer, Hanno Gerd and Schneider, Axel}, keywords = {sEMG, surface electromyography, biceps, triceps, data set}, publisher = {FH Bielefeld}, title = {{Surface electromyographic recordings of the biceps and triceps brachii for various postures, motion velocities and load conditions}}, doi = {10.57720/2290}, year = {2023}, } @inproceedings{3856, abstract = {Crises such as the COVID-19 pandemic put heavy restrictions on researchers who mainly follow a qualitative, ethnographic stance that typically relies on immersion in the setting, bringing remote research into the spotlight. In this paper, we describe how we, as qualitative researchers, responded to the crisis by comparing our experiences in conducting remote interviews in two German contexts: 1) with employees from a video game company during the summer of 2020 and 2) with several political and non-political actors in a rural region during autumn 2020 to summer 2021. Drawing on these experiences, we provide lessons learned for times when physical distancing is necessary but also beyond. While we faced some challenges and limitations, such as technical difficulties and a lack of contextual insights on-site, we also found a more profound quality in the absence of the regular interview setting. Thus, we advocate retaining someprocedures and alternative ways as future practice.}, author = {Schorch, Maren and Taugerbeck, Sebastian and Ahmadi, Michael and Bohn, Nino and Wulf, Volker}, booktitle = {InfraHEALTH}, location = {Siegen, Deutschland}, title = {{Navigating the Challenges of Remote Research in Times of Crisis and Beyond}}, doi = {10.48340/ihc2023_p014}, volume = {14}, year = {2023}, } @inproceedings{4362, abstract = {Weeds pose severe threats to agricultural yields and areas used for settlement and transport. Until now, glyphosate is widely applied to reduce undesired plants worldwide [1]. Due to its negative impact on the environment, insects and humans [2-5] and likely prohibition in the EU until the end of 2023 [6], an effective as well as ecologically acceptable alternative is urgently needed. Repeated application of commercially available nontriazine herbicides caused resistant biotypes of weeds, which requires evolved agents for their control [7]. Promising alternatives to replace these harmful or inefficient products are novel herbicidal substances that target pathways in plants, that cannot be bypassed and arrest growth or cause cell death without harmful side effects on non-target organisms [8]. 7-deoxy-sedoheptulose (7dSh) is such a novel herbicidal candidate. This sugar was isolated from culture supernatants of Synechococcus elongatus and has recently been reported to act as an inhibitor of a key enzyme of the shikimate pathway [8] analogous to glyphosate [1]. Yet the cyanobacterium S. elongatus produces very low amounts of 7dSh merely in the stationary phase of cultivation [8] and is therefore not a suitable candidate for an industrial production. Besides, chemoenzymatic synthesis of 7dSh has a low yield (20%) [8] and is not economically feasible due to high substrate costs such as 5-deoxy-D-ribose. Therefore, we aim to develop a microbial process with Streptomyces setonensis as a natural producer strain [8] for the large-scale production of 7dSh as an alternative herbicide. To evolve a scalable, well-characterized bioprocess for an unknown microbial system, firstly, parameters as media composition, phosphate and nitrogen limitation were examined using a high-throughput microbioreactor system (BioLector) which allows online-monitoring of growth. Moreover, a design of experiments (DOE) approach in shake flasks was conducted to investigate the influence of cultivation factors on each other. To verify the influence of oxygen availability and gain a deeper understanding of the metabolism the oxygen transfer rate is measured with RAMOS® (Respiration Activity MOnitoring System). Results from the DOE approach suggest that elevated osmolarity through NaCl addition enables higher product titers whereas nitrogen starvation or addition has no influence. For other Streptomyces strains it is reported that the synthesis of antibiotics and other secondary metabolites is coupled to phosphate limitation [9]. Surprisingly, in contrast, 7dSh synthesis is enhanced by adding 150% more of both phosphate components than in the basic minimal medium [10] and decreased if phosphate starvation occurs. Therefore, the identification of the trigger for the 7dSh production is still ongoing, although the product titer was already increased by factor 100 from mg/L [8] to g/L. The identified beneficial culture conditions lay the foundation for the process scale-up to a stirred-tank reactor and to further improve product concentration by applying process control and defining the optimal operation regime. REFERENCES [1] Duke, S. O. and Powles, S. B. Glyphosate: a once-in-a-century herbicide. Pest. Manag. Sci. 64, 319–325 (2008). [2] Kiefer, J.S.T., Batsukh, S., Bauer, E. et al. Inhibition of a nutritional endosymbiont by glyphosate abolishes mutualistic benefit on cuticle synthesis in Oryzaephilus surinamensis. Commun Biol 4, 554 (2021). [3] Smith, D.F.Q., Camacho, E., Thakur, R. et al. Glyphosate inhibits melanization and increases susceptibility to infection in insects. PLOS Biology 19(5): e3001182 (2021). [4] Farina, W.M., Balbuena, M.S., Herbert, L.T. et al. Effects of the Herbicide Glyphosate on Honey Bee Sensory and Cognitive Abilities: Individual Impairments with Implications for the Hive. Insects 10, 354 (2019). [5] Meftaul, I.M., Venkateswarlu, K., Dharmarajan, R. et al. Controversies over human health and ecological impacts of glyphosate: Is it to be banned in modern agriculture? Environ Pollut. 263(Pt A):114372 (2020). [6] https://www.bmuv.de/themen/wasser-ressourcen-abfall/boden-und-altlasten/bodenschutz-und-altlasten- worum-geht-es/faq-plan-zum-glyphosat-ausstieg [7] LeBaron, H.M., Hill, E.R. Weeds resistant to nontriazine classes of herbicides. In: LeBaron HM, McFarland JE, Burnside OC (eds) The Triazine Herbicides. Elsevier, Chapter 11 (2008) [8] Brilisauer, K., Rapp, J., Rath, P. et al. Cyanobacterial antimetabolite 7-deoxy-sedoheptulose blocks the shikimate pathway to inhibit the growth of prototrophic organisms. Nat Commun 10, 545 (2019) [9] Martin, J.F. Phosphate control of the biosynthesis of antibiotics and other secondary metabolites is mediated by the PhoR-PhoP system: an unfinished story. J. Bacteriol. 186 (16), 5197–5201 (2004) [10] Koepff, J., Sachs, C.C., Wiechert, W. et al. Germination and Growth Analysis of Streptomyces lividans at the Single-Cell Level Under Varying Medium Compositions. Front. Microbiol. 9:2680 (2018)}, author = {Steurer, Xenia Ricarda and Jakobs-Schönwandt, Dèsirèe and Forchhammer, Karl and Grünberger, Alexander and Patel, Anant}, location = {Berlin}, title = {{Development of a bioprocess for the production of a herbicidal sugar as sustainable alternative to glyphosate}}, year = {2023}, } @inproceedings{4320, author = {Hanselle, Raphael and Stork, Dominic and Lück, Sönke and Rasche, Rainer and Naumann, Rolf and Witte, Stefan}, booktitle = {Advances in Dynamics of Vehicles on Roads and Tracks III Proceedings of the 28th Symposium of the International Association of Vehicle System Dynamics}, location = {Ottawa}, title = {{Simulation of a Longitudinal Control System for an Automated Driving Self-Stabilized Monorail Vehicle}}, year = {2023}, } @inproceedings{4293, author = {Schwan, Constanze and Schenck, Wolfram}, booktitle = {2023 International Joint Conference on Neural Networks (IJCNN)}, location = {Gold Coast, Australia}, pages = {1--8}, publisher = {IEEE}, title = {{Object View Prediction with Aleatoric Uncertainty for Robotic Grasping}}, doi = {10.1109/IJCNN54540.2023.10191465}, year = {2023}, } @article{2774, abstract = { Despite the availability and ease of collecting a large amount of free, unlabeled data, the expensive and time-consuming labeling process is still an obstacle to labeling a sufficient amount of training data, which is essential for building supervised learning models. Here, with low labeling cost, the active learning (AL) technique could be a solution, whereby a few, high-quality data points are queried by searching for the most informative and representative points within the instance space. This strategy ensures high generalizability across the space and improves classification performance on data we have never seen before. In this paper, we provide a survey of recent studies on active learning in the context of classification. This survey starts with an introduction to the theoretical background of the AL technique, AL scenarios, AL components supported with visual explanations, and illustrative examples to explain how AL simply works and the benefits of using AL. In addition to an overview of the query strategies for the classification scenarios, this survey provides a high-level summary to explain various practical challenges with AL in real-world settings; it also explains how AL can be combined with various research areas. Finally, the most commonly used AL software packages and experimental evaluation metrics with AL are also discussed. }, author = {Tharwat, Alaa and Schenck, Wolfram}, issn = {2227-7390}, journal = {Mathematics}, number = {4}, publisher = {MDPI AG}, title = {{A Survey on Active Learning: State-of-the-Art, Practical Challenges and Research Directions}}, doi = {10.3390/math11040820}, volume = {11}, year = {2023}, } @inbook{3781, author = {Neumann, Alexander and Strenge, Benjamin and Schalkwijk, Lars and Schulte, Julian and Kato-Beiderwieden, Anna-Lena and Essig, Kai and Maier, Günter W. and Waßmuth, Joachim and Schack, Thomas}, booktitle = {Digitalisierung der Arbeitswelt im Mittelstand 3. Ergebnisse und Best Practice des BMBF-Forschungsschwerpunkts "Zukunft der Arbeit: Mittelstand – innovativ und sozial"}, editor = {Nitsch, Verena and Brandl, Christopher and Häußling, Roger and Roth, Philip and Gries, Thomas and Schmenk, Bernhard}, isbn = {978-3-662-67023-1}, pages = {291--331}, publisher = {Springer Berlin Heidelberg}, title = {{Kognitive Augmented-Reality-Assistenzsysteme in KMU – organisationale und technische Ansätze für eine individuelle Arbeitsunterstützung}}, doi = {10.1007/978-3-662-67024-8_8}, year = {2023}, } @inproceedings{3777, abstract = {This work presents a study that compares the angular accuracy of a binaural bioinspired method with classical delay-and-sum beamforming using linear acoustic arrays with an increasing number of sensors. In addition, this study also focuses on the frequency band dependent angular accuracy of the bioinspired method, as previous work has optimized it only for localizing narrowband sound sources. Therefore, a comparison of the localization accuracy for narrowband and broadband excitatory sounds is presented. This enables conclusions about the potential to reduce resources in terms of sensor array spatial requirements and the number of sensors if a bioinspired system is used.}, author = {Jünemann, Philipp and Mechtenberg, Malte and Schneider, Axel and Waßmuth, Joachim}, booktitle = {Engineering for a Changing World : Proceedings; 60th ISC, Ilmenau Scientific Colloquium}, publisher = {ilmedia}, title = {{Comparative study of a bioinspired sound source localization algorithm and a standard beamformer}}, doi = {10.22032/DBT.59141}, year = {2023}, } @article{3765, abstract = { Abstract - Bioinspired methods for sound source localization offer opportunities for resource reduction as well as concurrent performance improvement in contrast to conventional techniques. Usually, sound source localization requires a large number of microphones arranged in irregular geometries, and thus has high resource requirements in terms of space and data processing. Motivated by biology and using digital signal processing methods, an approach that adapts the coupled hearing system of the fly Ormia ochracea with a minimally distant two-microphone array is presented. Despite its physiology, the fly is able to overcome physical limitations in localizing low-frequency sound sources. By exploiting the filtering effect of the coupling system, the direction-of-arrival of the sound is determined with two microphones at an intermediate distance of 0.06 m. For conventional beamforming algorithms, these physical limitations would result in degraded localization performance. In this work, the bioinspired coupling system is analyzed and subsequently parameterized direction-sensitive for different directions of incidence of the sound. For the parameterization, an optimization method is presented which can be adopted for excitation with plane as well as spherical sound wave propagation. Finally, the method was assessed using simulated and measured data. For 90% of the simulated scenarios, the correct direction of incidence could be determined with an accuracy of less than 1 ∘ despite the use of a minimal distant two-microphone array. The experiments with measured data also resulted in a correct determination of the direction of incidence, which qualifies the bioinspired method for practical use in digital hardware systems. }, author = {Jünemann, Philipp and Schneider, Axel and Waßmuth, Joachim}, issn = {1748-3190}, journal = {Bioinspiration & Biomimetics}, number = {5}, publisher = {IOP Publishing}, title = {{Direction-of-arrival estimation for acoustic signals based on direction-dependent parameter tuning of a bioinspired binaural coupling system}}, doi = {10.1088/1748-3190/ace50a}, volume = {18}, year = {2023}, } @article{3453, abstract = { For assistive devices such as active orthoses, exoskeletons or other close-to-body robotic-systems, the immediate prediction of biological limb movements based on biosignals in the respective control system can be used to enable intuitive operation also by untrained users e.g. in healthcare, rehabilitation or industrial scenarios. Surface electromyography (sEMG) signals from the muscles that drive the limbs can be measured before the actual movement occurs and, hence, can be used as source for predicting limb movements. The aim of this work was to create a model that can be adapted to a new user or movement scenario with little measurement and computing effort. Therefore, a biomechanical model is presented that predicts limb movements of the human forearm based on easy to measure sEMG signals of the main muscles involved in forearm actuation ( lateral and long head of triceps and short and long head of biceps ). The model has 42 internal parameters of which 37 were attributed to 8 individually measured physiological measures (location of acromion at the shoulder, medial/lateral epicondyles as well as olecranon at the elbow, and styloid processes of radius/ulna at the wrist; maximum muscle forces of biceps and triceps ). The remaining 5 parameters are adapted to specific movement conditions in an optimization process. The model was tested in an experimental study with 31 subjects in which the prediction quality of the model was assessed. The quality of the movement prediction was evaluated by using the normalized mean absolute error (nMAE) for two arm postures (lower, upper), two load conditions (2 kg, 4 kg) and two movement velocities (slow, fast). For the resulting 8 experimental combinations the nMAE varied between nMAE = 0.16 and nMAE = 0.21 (lower numbers better). An additional quality score (QS) was introduced that allows direct comparison between different movements. This score ranged from QS = 0.25 to QS = 0.40 (higher numbers better) for the experimental combinations. The above formulated aim was achieved with good prediction quality by using only 8 individual measurements (easy to collect body dimensions) and the subsequent optimization of only 5 parameters. At the same time, just easily accessible sEMG measurement locations are used to enable simple integration, e.g. in exoskeletons. This biomechanical model does not compete with models that measure all sEMG signals of the muscle heads involved in order to achieve the highest possible prediction quality. }, author = {Grimmelsmann, Nils and Mechtenberg, Malte and Schenck, Wolfram and Meyer, Hanno Gerd and Schneider, Axel}, issn = {1932-6203}, journal = {PLOS ONE}, number = {8}, publisher = {Public Library of Science (PLoS)}, title = {{sEMG-based prediction of human forearm movements utilizing a biomechanical model based on individual anatomical/ physiological measures and a reduced set of optimization parameters}}, doi = {10.1371/journal.pone.0289549}, volume = {18}, year = {2023}, }