TY - RPRT A1 - Niemann, Jörg A1 - Bruckmann, Julian A1 - Krautzer, Florian T1 - Green City Deals: A study on the global warming potential of alternative urban transportation systems N2 - The population is growing constantly in urban areas. This results in an increasing demand for mobility solutions while it is also worldwide aimed to reduce greenhouse gas emissions. This paper summarizes the results of a comparative study concerning the greenhouse gas emissions (based on carbon footprint) caused by alternative urban passenger transportation systems. The emissions for the vehicles and their infrastructure are analyszed over the entire life cycle from manufacturing up to their end of life. An existing cable car sytem in La Paz, Bolivia was analysed and evaluated in comparison to other modes of transportation such as small busses, large busses and a tram. According to the system definitions and the considered balance framework the study shows that beside the use of the systems the materials and the manufacturing as well as the infrastructure have a significant impact on the total emissions over the life cycle. To put focus on the „true and real“ impacts to the society it is preferable to consider the measurement results in total absolute emissions. KW - Carbon footprint KW - urban mobility KW - cable car KW - bus KW - tram KW - transport planning KW - city planning Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-28972 CY - Düsseldorf ER - TY - CHAP A1 - Jandura, Olaf A1 - Weinmann, Carina ED - Ziegele, Marc ED - Kümpel, Anna Sophie ED - Dienlin, Tobias T1 - Greater Confusion in the Voter Market in Germany: Differences Between Subjective and Value-Based Categorization on the Left-Right Axis T2 - Jahrestagung der DGPuK-Fachgruppe Rezeptions- und Wirkungsforschung 2022: Tagungsband N2 - In den letzten Jahren war häufig von einem Rechtsruck in der Gesellschaft die Rede (O. Decker et al., 2016). Bevölkerungsrepräsentative Umfragedaten belegen diese These jedoch nicht. Weder die Allgemeine Bevölkerungsumfrage der Sozialwissenschaften (ALLBUS) noch der European Social Survey zeigen für die letzten Jahrzehnte signifikante Veränderungen in der Selbstpositionierung der Befragten auf der Links-Rechts-Skala. Dies wirft die Frage auf, ob es sich bei dem behaupteten gesellschaftlichen Rechtsruck um ein soziologisches Wahrnehmungsphänomen handelt, das durch die intensive öffentliche Debatte verstärkt wird, oder ob Zweifel an der Validität der politischen Selbstpositionierung auf der Links-Rechts-Skala angebracht sind. Der vorliegende Artikel befasst sich mit der letzteren Frage. Unsere Analysen ergaben, dass bei 31 % der Befragten in unserer Stichprobe eine Divergenz zwischen der subjektiven Positionierung auf der Links-Rechts-Skala und einer wertbezogenen Positionierung besteht. Wir erörtern, welche Variablen diese Divergenz erklären können und welche Konsequenzen daraus für die kommunikationswissenschaftliche Forschung gezogen werden können. N2 - In recent years, there has been frequent talk of a shift to the right in society (O. Decker et al., 2016). However, population-representative survey data do not substantiate this thesis, with neither the German General Social Survey (ALLBUS) nor the European Social Survey showing any significant changes in respondents’ self-positioning on the left-right axis over the past decades. This raises the question of whether the purported societal shift to the right is a sociological perceptual phenomenon that is magnified due to intense public debate, or whether doubts about the validity of the question on political self-positioning on the left-right scale are warranted. The present article addresses the latter issue. Our analyses revealed a divergence between subjective positioning on the left-right axis and value-based positioning for 31% of respondents in our sample. We further discuss which variables may explain this divergence and what consequences can be drawn for research in communication science. KW - left-right scale KW - subjective positioning KW - value-based positioning KW - political values KW - Links-Rechts-Skala KW - subjektive Positionierung KW - wertbasierte Positionierung KW - politische Werte KW - Politische Einstellung Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-56419 SP - 75 EP - 92 PB - SSOAR CY - Düsseldorf ER - TY - JOUR A1 - Shajahan, Mohamed Iqbal A1 - Benim, Ali Cemal T1 - Granular PCM based heat sink for electronics thermal management JF - Applied Thermal Engineering N2 - This study investigates aluminum heat sinks integrated with GR42 phase change material (PCM), aiming to enhance thermal inertia and stabilize device temperatures. This is important, since the increasing miniaturization and performance demands for electronic devices have led in a growing need for advanced thermal management systems capable of handling rapid transient loads. The novelty of the work lies in examining different heat sink layouts that optimize the heat dissipation capabilities of GR42 PCMs while minimizing size and weight for electronic cooling. The experimental testing was conducted using three configurations, namely no fin, circular fin and hexagonal fin, with three input powers (4 W, 8 W, and 12 W). The experimental results show that the hexagonal-fin heat sink, surface area is 25 % more than circular fins, exhibited superior thermal performance without significant variation in input power. Notably, the hexagonal-fin heat sink achieved the desired set point temperature of 55 ◦C in 33 % less time than the circular-fin design and 45 % less time than the heat sink without fins. Furthermore, the peak temperatures increased up to 21 % for circular fins. During the charging cycles, the enhancement ratios vary from 72 % and begin to narrow to 25 % during discharge cycles. The hexagonal-fin configuration also exhibited superior melting dynamics, completing the phase transition 44 % faster at higher input power than the circular fins, and established a thermal deviation of nearly 51 % less than finless heat sinks. These findings underscore the critical role of fin geometry and PCM integration in achieving uniform temperature distribution and improved energy storage efficiency. Overall, the hexagonal-fin heat sink with GR42 PCM shows strong potential as a passive cooling solution for low-power portable electronic devices. KW - Heat sinks KW - Portable electronic cooling KW - Latent heat storage KW - GR42 PCM KW - Hexagonal fin KW - Circular fin KW - HSD Publikationsfonds KW - DFG Publikationskosten Y1 - 2026 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-59649 SN - 1359-4311 VL - 286 PB - Elsevier ER - TY - INPR A1 - Yuwono, Steve A1 - Löppenberg, Marlon A1 - Schwung, Dorothea A1 - Schwung, Andreas T1 - Gradient-based Learning in State-based Potential Games for Self-Learning Production Systems T2 - arxiv N2 - In this paper, we introduce novel gradient-based optimization methods for state-based potential games (SbPGs) within self-learning distributed production systems. SbPGs are recognised for their efficacy in enabling self-optimizing distributed multi-agent systems and offer a proven convergence guarantee, which facilitates collaborative player efforts towards global objectives. Our study strives to replace conventional ad-hoc random exploration-based learning in SbPGs with contemporary gradient-based approaches, which aim for faster convergence and smoother exploration dynamics, thereby shortening training duration while upholding the efficacy of SbPGs. Moreover, we propose three distinct variants for estimating the objective function of gradient-based learning, each developed to suit the unique characteristics of the systems under consideration. To validate our methodology, we apply it to a laboratory testbed, namely Bulk Good Laboratory Plant, which represents a smart and flexible distributed multi-agent production system. The incorporation of gradient-based learning in SbPGs reduces training times and achieves more optimal policies than its baseline. KW - Machine Learning KW - Artificial Intelligence KW - Computer Science and Game Theory KW - Maschinelles Lernen KW - Künstliche Intelligenz KW - Spieltheorie Y1 - 2024 U6 - https://doi.org/10.48550/arXiv.2406.10015 PB - arxiv ER - TY - CHAP A1 - Becker, Martin A1 - Lippel, Jens A1 - Zielke, Thomas T1 - Gradient Descent Analysis: On Visualizing the Training of Deep Neural Networks T2 - VISIGRAPP 2019: Proceedings of the 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications : Prague, Czech Republic, February 25-27, 2019 Y1 - 2019 SN - 978-989-758-354-4 U6 - https://doi.org/10.5220/0007583403380345 VL - Volume: 3 SP - 338 EP - 345 PB - INSTICC ER - TY - RPRT A1 - Deckert, Carsten T1 - Good Vibrations from Electronic Circuits: The Technological Development of the Synthesizer T3 - Business Cases in Industrial Engineering - 4 Y1 - 2024 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-44394 SN - 2941-4075 ER - TY - JOUR A1 - de Jonge, Niek F. A1 - Mildau, Kevin A1 - Meijer, David A1 - Louwen, Joris J. R. A1 - Bueschl, Christoph A1 - Huber, Florian A1 - van der Hooft, Justin J. J. T1 - Good practices and recommendations for using and benchmarking computational metabolomics metabolite annotation tools JF - Metabolomics N2 - Background Untargeted metabolomics approaches based on mass spectrometry obtain comprehensive profiles of complex biological samples. However, on average only 10% of the molecules can be annotated. This low annotation rate hampers biochemical interpretation and effective comparison of metabolomics studies. Furthermore, de novo structural characterization of mass spectral data remains a complicated and time-intensive process. Recently, the field of computational metabolomics has gained traction and novel methods have started to enable large-scale and reliable metabolite annotation. Molecular networking and machine learning-based in-silico annotation tools have been shown to greatly assist metabolite characterization in diverse fields such as clinical metabolomics and natural product discovery. Aim of review We highlight recent advances in computational metabolite annotation workflows with a special focus on their evaluation and comparison with other tools. Whilst the progress is substantial and promising, we also argue that inconsistencies in benchmarking different tools hamper users from selecting the most appropriate and promising method for their research. We summarize benchmarking strategies of the different tools and outline several recommendations for benchmarking and comparing novel tools. Key scientific concepts of review This review focuses on recent advances in mass spectral library-based and machine learning-supported metabolite annotation workflows. We discuss large-scale library matching and analogue search, the current bloom of mass spectral similarity scores, and how molecular networking has changed the field. In addition, the potentials and challenges of machine learning-supported metabolite annotation workflows are highlighted. Overall, recent developments in computational metabolomics have started to fundamentally change metabolomics workflows, and we expect that as a community we will be able to overcome current method performance ambiguities and annotation bottlenecks. KW - Metabolomik KW - Massenspektrometrie KW - Maschinelles Lernen KW - Benchmarking KW - Mass fragmentation spectra Y1 - 2022 U6 - https://doi.org/10.1007/s11306-022-01963-y SN - 1573-3890 VL - 18 IS - 12 PB - Springer Nature ER - TY - CHAP A1 - Geiger, Christian A1 - Thiele, Simon A1 - Meyer, Laurid A1 - Meyer, Stefan A1 - Hören, Lutz A1 - Drochtert, Daniel ED - Reidsma, Dennis ED - Katayose, Haruhiro ED - Nijholt, Anton T1 - Goin’ Goblins - Iterative Design of an Entertaining Archery Experience T2 - Advances in Computer Entertainment. 10th International Conference, ACE 2013, Boekelo, The Netherlands, November 12-15, 2013. Proceedings Y1 - 2013 SN - 978-3-319-03160-6 U6 - https://doi.org/10.1007/978-3-319-03161-3_20 VL - 8253 SP - 284 EP - 295 PB - Springer International Publishing CY - Cham ER - TY - CHAP A1 - Virchow, Fabian ED - Fischer, Jörg ED - Dunn, Kerry T1 - Globalization, Crisis, and Right-Wing Populism in Context T2 - Stifled Progress – International Perspectives on Social Work and Social Policy in the Era of Right-Wing Populism Y1 - 2019 SN - 9783847413233 SP - 59 EP - 70 PB - Verlag Barbara Budrich CY - Opladen ER - TY - JOUR A1 - Migueles, Jairo H. A1 - Rowlands, Alex V. A1 - Huber, Florian A1 - Sabia, Séverine A1 - van Hees, Vincent T. T1 - GGIR: A Research Community–Driven Open Source R Package for Generating Physical Activity and Sleep Outcomes From Multi-Day Raw Accelerometer Data JF - Journal for the Measurement of Physical Behaviour Y1 - 2019 U6 - https://doi.org/10.1123/jmpb.2018-0063 SN - 2575-6605 VL - 2 IS - 3 SP - 188 EP - 196 PB - Human Kinetics ER - TY - CHAP A1 - Virchow, Fabian T1 - Germany T2 - Routledge Handbook of Violent Extremism and Resilience KW - Rechtsradikalismus KW - Deutschland KW - Resilienz Y1 - 2023 SN - 9781003267102 U6 - https://doi.org/10.4324/9781003267102-13 SP - 168 EP - 180 PB - Routledge CY - London ET - 1 ER - TY - JOUR A1 - Titus, Juliane A1 - Kaluza, Stefan A1 - Marschall, Roland T1 - German Catalysis on an International Scale in Weimar JF - ChemCatChem Y1 - 2014 U6 - https://doi.org/10.1002/cctc.201402266 SN - 1867-3899 VL - 6 IS - 6 SP - 1523 EP - 1525 PB - Wiley ER - TY - JOUR A1 - Engel, Rebecca V. A1 - Kaluza, Stefan A1 - Oezaslan, Mehtap A1 - Peitz, Stephan T1 - German Catalysis Meeting - 50 Years and as Young as Ever JF - ChemCatChem Y1 - 2017 U6 - https://doi.org/10.1002/cctc.201700683 SN - 1867-3899 VL - 9 IS - 11 SP - 2018 EP - 2020 PB - Wiley ER - TY - CHAP A1 - Jendreiko, Christian ED - Arias, Joaquín ED - Azzolini, Damiano ED - Basu, Kinjal ED - Dahl, Veronica ED - Hecher, Markus ED - Pacenza, Francesco ED - Saribatur, Zeynep ED - Varanasi, Sarat C. T1 - Generative Logic: Teaching Prolog as Generative AI in Art and Design T2 - ICLP-WS 2024 ICLP Workshops 2024: Workshop Proceedings of the 40th International Conference on Logic Programming (ICLP-WS 2024) co-located with the 40th International Conference on Logic Programming (ICLP 2024) N2 - This paper introduces a method for teaching Prolog, especially to BA and MA students in art and design faculties. The method is called Exploring Generative Logic (EGL). The method is based on the concept of Generative Logic. Both methods are under development at the Faculty of Design, HSD, University of Applied Sciences, Düsseldorf. The basic idea of teaching Prolog with EGL is to present Prolog not as “another” programming language, but primarily as a logic AI. This perspective helps beginners gain a clear view of how Prolog works and focuses on understanding Prolog as a powerful generative AI, making it highly attractive in the domain of art and design. The author assumes that the EGL method can be easily adapted to other educational settings: education of non-programmers of all ages, including children in elementary or secondary schools, as well as students in other non-STEM curricula, to develop skills in logical thinking, digital literacy, AI literacy, and artistic literacy. The paper is divided into two parts: Part one provides an introduction to the basic ideas and objectives of the teaching method. Part two offers a description of the teaching method. KW - Generative Logic KW - Teaching Prolog KW - Logic Programming KW - Generative AI KW - Generative Design KW - Symbolic AI KW - Digital Literacy KW - AI Literacy Y1 - 2024 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-46771 SN - 1613-0073 VL - 3799 SP - 1 EP - 11 PB - RWTH Aachen CY - Aachen ER - TY - THES A1 - Versümer, Siegbert T1 - Generalized prediction of quiet indoor soundscapes based on retrospective and in-situ judgements N2 - This dissertation aims to enhance the understanding of how people perceive and react to everyday sounds, particularly in their homes. The focus is laid on indoor soundscapes and the interplay between acoustic measures, individual differences, and contextual factors. A retrospective online study and a field study at peoples’ homes based on the Experience Sampling Method were the ecologically valid ground truth for four key publications. These address significant gaps in soundscape research by providing insights into the factors influencing sound perception in real-life contexts, the evaluation of low-level (i.e., quiet) sounds, and the consequences of (in)appropriate statistical analysis of imbalanced hierarchical soundscape data. The studies reveal that the sound source category is a critical predictor of annoyance and the pleasantness of soundscapes, with different types of sounds (e.g., natural, human, technical) having distinct impacts. Contrary, the effect of acoustic measures like perceived and calculated loudness on sound perception was expected to be high but was masked by contextual factors. These were the perceived control over the acoustic situation and the affective state of a person in the specific situation, proving context-related perceptual measures to be more important than the sound itself. The research consequently highlights the need for automatic sound source identification in complex polyphony everyday sound environments and suggests that individual preferences and liking of sounds could be potential factors in predicting individual sound perception. The dissertation also emphasizes the importance of using appropriate statistical methods, including mixed-effects models and nonlinear regression techniques, to generate more generalizable and more valid results based on hierarchical and imbalanced soundscape data. The findings underscore the limitations of traditional acoustic metrics and advocate for the use of time-series data to better capture the dynamic nature of everyday sound environments in contrast to stimuli typically used in laboratory studies. The author further developed a multi-objective function for avoiding both over- and underfitting during hyperparameter tuning, significantly improving generalized model fitting in soundscape research. Overall, this work contributes to the field of soundscape research by providing a comprehensive analysis of sound perception in indoor environments, highlighting the importance of context, individual differences, and advanced statistical methods in understanding and modeling soundscapes. Finally, future perspectives were discussed, such as the focus on individual preferences, experiences, and expectations for the improved prediction of individual sound perception. N2 - Diese Dissertation verbessert das Verständnis dafür, wie Menschen alltägliche Geräusche wahrnehmen. Der Schwerpunkt liegt dabei auf der Geräuschkulisse in Innenräumen und dem Zusammenspiel von (psycho-)akustischen Messgrößen, individuellen Unterschieden und kontextuellen Faktoren. Eine retrospektive Online-Studie und eine Feldstudie in Wohnräumen der Probanden bildeten die ökologisch valide Grundlage der vier Schlüsselpublikationen. Diese untersuchen Faktoren, die die Geräuschwahrnehmung in realen Kontexten beeinflussen, indem sie die Bewertung von Geräuschen und die Folgen einer (un-)angemessenen statistischen Analyse von unausgewogenen hierarchischen Soundscape-Daten betrachten. Die Studien zeigen, dass die Kategorie der Geräuschquelle ein entscheidender Prädiktor für die Belästigung und die Angenehmheit ist. Entgegen der Erwartung, dass akustische Messgrößen wie die wahrgenommene und berechnete Lautheit einen großen Einfluss auf die Geräuschwahrnehmung haben, zeigte sich jedoch, dass diese durch kontextbezogene Faktoren maskiert wurde. Dabei handelte es sich um die empfundene Kontrolle über die akustische Situation und den emotionalen Zustand einer Person in der spezifischen Situation, wobei sich kontextbezogene Wahrnehmungsmaße als wichtiger erwiesen als das Umgebungsgeräusch selbst. Die Untersuchung unterstreicht folglich die Notwendigkeit einer automatischen Identifizierung von Geräuschquellen in komplexen polyphonen alltäglichen Geräuschumgebungen und legt nahe, dass individuelle Vorlieben für bestimmte Klänge wichtige Faktoren bei der Vorhersage der individuellen Geräuschwahrnehmung sein könnten. Die Dissertation unterstreicht zusätzlich die Bedeutung der Verwendung geeigneter statistischer Methoden, einschließlich Modellen mit gemischten Effekten und nichtlinearen Regressionstechniken, um verallgemeinerungsfähigere Ergebnisse auf der Grundlage hierarchischer und unausgewogener Daten von Soundscape-Studien zu erzielen. Die Ergebnisse zeigen zudem die Grenzen akustischer und psychoakustischer Metriken auf und implizieren die Verwendung von Zeitreihendaten, um die dynamische Natur alltäglicher Geräuschumgebungen besser zu repräsentieren. Darüber hinaus entwickelte der Autor eine Mehrzieloptimierung zur Vermeidung von Über- und Unteranpassung beim Hyperparametertuning, wodurch die Anpassung verallgemeinerbarer Modelle erheblich verbessert wird. Insgesamt leistet diese Arbeit einen wesentlichen Beitrag, indem sie eine umfassende Analyse der Geräuschwahrnehmung in Innenräumen liefert und die Bedeutung von Kontext, individuellen Unterschieden und angemessenen statistischen Methoden für das Verständnis und die Modellierung von Soundscapes hervorhebt. Abschließend werden mögliche Zukunftsperspektiven erörtert, wie z. B. der Fokus auf individuelle Präferenzen, Erfahrungen und Erwartungen für eine verbesserte Vorhersage der individuellen Geräuschwahrnehmung. KW - Psychoakustik KW - Lautwahrnehmung KW - Lautstärke KW - Belästigung Y1 - 2025 U6 - https://doi.org/10.14279/depositonce-23962 PB - Berlin CY - Technische Universität Berlin ER - TY - JOUR A1 - Eckhardt, Jennifer A1 - Kaletka, Christoph A1 - Pelka, Bastian A1 - Unterfrauner, Elisabeth A1 - Voigt, Christian A1 - Zirngiebl, Marthe T1 - Gender in the making: An empirical approach to understand gender relations in the maker movement JF - International Journal of Human-Computer Studies Y1 - 2021 U6 - https://doi.org/10.1016/j.ijhcs.2020.102548 SN - 1095-9300 VL - 145 IS - 102548 PB - Elsevier ER - TY - JOUR A1 - Möllmann, Anne A1 - Hunger, Antje A1 - Schulz, Claudia A1 - Wilhelm, Sabine A1 - Buhlmann, Ulrike T1 - Gazing rituals in body dysmorphic disorder JF - Journal of behavior therapy and experimental psychiatry KW - FBSK_Webseite Y1 - 2020 U6 - https://doi.org/10.1016/j.jbtep.2019.101522 VL - 68 PB - Elsevier ER - TY - JOUR A1 - Möllmann, Anne A1 - Hunger, Antje A1 - Dusend, Christina A1 - van den Hout, Marcel A1 - Buhlmann, Ulrike T1 - Gazing at facial features increases dissociation and decreases attractiveness ratings in non-clinical females - A potential explanation for a common ritual in body dysmorphic disorder JF - PloS one N2 - Rituals, such as gazing at faces, are common in body dysmorphic disorder (BDD) and appear in cognitive-behavioral models as a maintaining factor. Rituals are also common in obsessive-compulsive disorder (OCD). In contrast to OCD, the proposed associations between rituals and intrusive thoughts/appearance preoccupation have not been empirically investigated for BDD. We examined if the assumed effect of gazing rituals on attractiveness ratings exists and if it is associated with dissociation. In an experiment, we asked N = 65 non-clinical females to focus on the nose of a photographed face at pre- and post-test. In between, participants gazed at the nose of either the same (relevant gazing) or another face (irrelevant gazing). We found increasing dissociation after gazing in both conditions and a differentially stronger decrease of attractiveness ratings in the relevant gazing condition. Our findings support the hypothesized effect of gazing rituals on attractiveness evaluation in cognitive-behavioral models for BDD. Y1 - 2019 U6 - https://doi.org/10.1371/journal.pone.0219791 VL - 14 IS - 7 PB - PLoS ER - TY - CHAP A1 - Treskunov, Anastasia A1 - Vogel, Christoph A1 - Wróblewska, Marta A1 - Bertram, Michael A1 - Büntig, Fabian A1 - Geiger, Christian ED - Chisik, Yoram ED - Holopainen, Jussi ED - Khaled, Rilla ED - Luis Silva, José ED - Alexandra Silva, Paula T1 - G:RASS – Experiencing a City Through an Artist’s Eyes T2 - Intelligent Technologies for Interactive Entertainment: INTETAIN 2017, Funchal, Portugal, June 20-22, 2017, Proceedings Y1 - 2018 UR - https://doi.org/10.1007/978-3-319-73062-2_12 SN - 978-3-319-73061-5 U6 - https://doi.org/10.1007/978-3-319-73062-2_12 SP - 142 EP - 145 PB - Springer International Publishing CY - Cham ER - TY - CHAP A1 - Gaida, Daniel A1 - Stuhlsatz, André A1 - Meier, Hans-Günter ED - Wendemuth, Andreas ED - Meier, Hans-Günter T1 - Fusion of Visual and Inertial Measurements for Pose Estimation T2 - Proceedings of the Workshop on Emotion-, Speech- and Face Recognition with Advanced Classifiers: Düsseldorf, Germany, May 16 - 17, 2008 ; 3rd joined research workshop between Otto-von-Guericke University Magdeburg and the University of Applied Sciences FH Düsseldorf Y1 - 2008 SN - 9783940961242 SP - 39 EP - 48 PB - Otto-von-Guericke University Magdeburg CY - Magdeburg ER - TY - CHAP A1 - Triebus, Charlotte A1 - Harth, Jonathan A1 - Druzetic-Vogel, Ivana A1 - Geiger, Christian ED - De Paolis, Lucio Tommaso ED - Arpaia, Pasquale ED - Sacco, Marco T1 - From Tool to Space: Towards Classifying New Media Art T2 - Extended Reality: International Conference, XR Salento 2025, Otranto, Italy, June 17–20, 2025, Proceedings, Part V KW - Medienkunst KW - Erweiterte Realität (Informatik) KW - Klassifikation KW - Taxonomie Y1 - 2025 SN - 9783031977749 U6 - https://doi.org/10.1007/978-3-031-97775-6_10 SN - 0302-9743 VL - Lecture Notes in Computer Science, Bd.15741 SP - 171 EP - 191 PB - Springer Nature Switzerland CY - Cham ER - TY - JOUR A1 - Voss, Karsten A1 - Musall, Eike A1 - Lichtmeß, Markus T1 - From Low Energy to Net Zero-Energy Buildings: Status and Perspectives JF - Journal of Green Building N2 - “Net Zero-Energy Building” has become a popular catchphrase to describe the synergy between energy-efficient building and renewable energy utilisation to achieve a balanced energy budget over an annual cycle. Taking into account the energy exchange with a grid overcomes the limitations of energy-autonomous buildings with the need for seasonal energy storage on-site. Although the expression, “Net Zero-Energy Building,” appears in many energy policy documents, a harmonised definition or a standardised balancing method is still lacking. This paper reports on the background and the various effects influencing the energy balance approach. After discussing the national energy code framework in Germany, a harmonised terminology and balancing procedure is proposed. The procedure takes not only the energy balance but also energy efficiency and load matching into account. KW - Eigene Methodik Y1 - 2011 U6 - https://doi.org/10.3992/jgb.6.1.46 VL - 6 IS - 1 SP - 46 EP - 57 PB - College Publishing ER - TY - CHAP A1 - Thielen, Sven A1 - Salgert, Björn A1 - Franz, Thomas T1 - From Lab to Market: Architectural Evolution in Open Source Transition T2 - Software Architecture, 19th European Conference, ECSA 2025, Limassol, Cyprus, September 15–19, 2025, Proceedings KW - Open Source KW - Architectural Erosion KW - Open Source Software KW - Hybrid Governance KW - Real-Time Systems KW - Software Archipelago KW - Cathedral-Bazaar Model Y1 - 2025 SN - 9783032021373 U6 - https://doi.org/10.1007/978-3-032-02138-0_20 SN - 0302-9743 VL - LNCS 15929 SP - 306 EP - 322 PB - Springer Nature CY - Cham ER - TY - RPRT A1 - van Rießen, Anne A1 - van den Brink, Henning T1 - From impacts to benefits: User research as a change of perspective for studies on the practice of drama education N2 - This essay looks at the potentials and limitations of user research for studies on the practice of drama education. To date, this field has been dominated by impact studies. After illustrating the blind spots that are created by taking this research approach to the practice of drama education, we will present the user research perspective and look at the opportunities that it provides to generate new, differentiated knowledge. User research makes it possible to illuminate the processes of acquiring and using knowledge in terms of its delivery. It also provides a potential framework of analysis for placing these processes in the delivery context, which includes subjective learning types, relevance and institutional and social conditions. This expanded perspective will make it possible to identify the factors that foster and limit benefits and reflect them in practice. N2 - In diesem Beitrag stehen die Potenziale und Grenzen der Nutzerforschung für die Erforschung theaterpädagogischer Praxis im Zentrum. Dabei wird unter Rückgriff auf die Wirkungsforschung, die bisher dieses Forschungsfeld dominiert, zunächst deutlich gemacht, welche „Blindstellen“ diese Forschungsperspektive für die theaterpädagogische Praxis birgt. Anschließend wird die Perspektive der Nutzerforschung dargestellt, um davon ausgehend der Frage nachzugehen, welche Option diese bietet, neues und differenziertes Wissen über die theaterpädagogische Praxis zu generieren. So könnte es unseres Erachtens mit Hilfe der Nutzerforschung möglich werden, die Aneignungs- und Nutzungsprozesse im Erbringungsverhältnis besser auszuleuchten, ins Verhältnis zum Erbringungskontext zu setzen und nutzenfördernde und -limitierende Faktoren zu identifizieren. T2 - Von der Wirkung zum Nutzen: Die Nutzerforschung als Perspektivwechsel bei der Erforschung theaterpädagogischer Praxis T3 - Studies in Social Sciences and Culture. Aus der Forschung des Fachbereichs Sozial- und Kulturwissenschaften der HSD - 6 KW - sozialpädagogische Nutzer*innenforschung KW - Wirkungsforschung KW - social pedagogical user research KW - drama education KW - Theaterpädagogik KW - impact studies Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-21273 SN - 2509-6958 CY - Düsseldorf ER - TY - JOUR A1 - Irrgang, Melanie A1 - Steffens, Jochen A1 - Egermann, Hauke T1 - From acceleration to rhythmicity: Smartphone-assessed movement predicts properties of music JF - Journal of New Music Research KW - Accelerometer KW - Embodied Music Cognition KW - Mobile Devices KW - Movement and Computing KW - Music Information Retrieval Y1 - 2020 U6 - https://doi.org/10.1080/09298215.2020.1715447 VL - 4 IS - 7 SP - 1 EP - 14 PB - Taylor & Francis ER - TY - GEN A1 - de Bánffy-Hall, Alicia T1 - Fresh Eyes on Music: lessons for community music and music education T2 - Sounding Board Y1 - 2013 SN - 1464-6730 ER - TY - CHAP A1 - Gräßle, Kathrin A1 - Müller, Regine ED - Thole, Werner ED - Höblich, Davina ED - Ahmed, Sarina T1 - Freie Träger [Im Erscheinen] T2 - Taschenwörterbuch Soziale Arbeit KW - im Erscheinen Y1 - 2026 PB - Julius Klinkhardt CY - Bad Heilbrunn ET - 3. überarbeitete Auflage ER - TY - CHAP A1 - Herder, Jens A1 - Daemen, Jeff A1 - Haufs-Brusberg, Peter A1 - Abdel Aziz, Isis ED - Brunnett, Guido ED - Coquillart, Sabine ED - van Liere, Robert ED - Welch, Gregory ED - Váša, Libor T1 - Four Metamorphosis States in a Distributed Virtual (TV) Studio: Human, Cyborg, Avatar, and Bot - Markerless Tracking and Feedback for Realtime Animation Control T2 - Virtual Realities: International Dagstuhl Seminar, Dagstuhl Castle, Germany, June 9-14, 2013, Revised Selected Papers KW - Markeless tracking KW - virtual studio KW - Avatars KW - virtual characters KW - Interaction feedback KW - VSVR KW - Virtual (TV) Studio Y1 - 2015 UR - https://link.springer.com/chapter/10.1007/978-3-319-17043-5_2 SN - 978-3-319-17042-8 U6 - https://doi.org/10.1007/978-3-319-17043-5_2 VL - LNCS, 8844 SP - 16 EP - 32 PB - Springer CY - Cham ER - TY - CHAP A1 - Burga, Jose A1 - Daemen, Jeff A1 - Djuderija, Sascha A1 - Gnehr, Maren A1 - Goossens, Lars A1 - Hartz, Sven A1 - Haufs-Brusberg, Peter A1 - Herder, Jens A1 - Ibrahim, Mohammed A1 - Koop, Nikolas A1 - Leske, Christophe A1 - Meyer, Laurid A1 - Müller, Antje A1 - Salgert, Björn A1 - Schroeder, Richard A1 - Thiele, Simon T1 - Four Metamorphosis States in a Distributed Virtual (TV) Studio: Human, Cyborg, Avatar, and Bot T2 - 10th International Conference on Visual Media Production (CVMP 2013), London N2 - The major challenge in virtual studio technology is the interaction between the actor and virtual objects. Within a distributed live production, two locally separated markerless tracking systems where used simultaneously alongside a virtual studio. The production was based on a fully tracked actor, cyborg (half actor, half graphics), avatar, and a bot. All participants could interact and throw a virtual disc. This setup is compared and mapped to Milgram’s continuum and technical challenges are described. KW - TV KW - Distributed Virtual KW - Studio KW - Human KW - Cyborg KW - Avatar KW - Bot KW - VSVR Y1 - 2013 CY - London ER - TY - CHAP A1 - Häusler, Alexander ED - Fischer, Jörg ED - Dunn, Kerry T1 - Forms of Right-Wing Populism: The Example Alternative for Germany (AfD) T2 - Stifled Progress – International Perspectives on Social Work and Social Policy in the Era of Right-Wing Populism KW - Forena Y1 - 2019 SN - 9783847413233 U6 - https://doi.org/10.2307/j.ctvfrxr60.4 SP - 17 EP - 32 PB - Verlag Barbara Budrich CY - Opladen ER - TY - JOUR A1 - Huber, Florian A1 - Strehle, Dan A1 - Schnauß, Jörg A1 - Käs, Josef T1 - Formation of regularly spaced networks as a general feature of actin bundle condensation by entropic forces JF - New Journal of Physics KW - DOAJ Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-34833 SN - 1367-2630 VL - 17 IS - 4 PB - IOP Publishing ER - TY - JOUR A1 - Emanuelsson, E. U. A1 - Hallquist, M. A1 - Kristensen, K. A1 - Glasius, M. A1 - Bohn, Birger A1 - Fuchs, H. A1 - Kammer, B. A1 - Kiendler-Scharr, A. A1 - Nehr, Sascha A1 - Rubach, F. A1 - Tillmann, R. A1 - Wahner, A. A1 - Wu, H.-C. A1 - Mentel, Th. F. T1 - Formation of anthropogenic secondary organic aerosol (SOA) and its influence on biogenic SOA properties JF - Atmospheric Chemistry and Physics N2 - Abstract. Secondary organic aerosol (SOA) formation from mixed anthropogenic and biogenic precursors has been studied exposing reaction mixtures to natural sunlight in the SAPHIR chamber in Jülich, Germany. In this study aromatic compounds served as examples of anthropogenic volatile organic compound (VOC) and a mixture of α-pinene and limonene as an example for biogenic VOC. Several experiments with exclusively aromatic precursors were performed to establish a relationship between yield and organic aerosol mass loading for the atmospheric relevant range of aerosol loads of 0.01 to 10 μg m−3. The yields (0.5 to 9%) were comparable to previous data and further used for the detailed evaluation of the mixed biogenic and anthropogenic experiments. For the mixed experiments a number of different oxidation schemes were addressed. The reactivity, the sequence of addition, and the amount of the precursors influenced the SOA properties. Monoterpene oxidation products, including carboxylic acids and dimer esters were identified in the aged aerosol at levels comparable to ambient air. OH radicals were measured by Laser Induced Fluorescence, which allowed for establishing relations of aerosol properties and composition to the experimental OH dose. Furthermore, the OH measurements in combination with the derived yields for aromatic SOA enabled application of a simplified model to calculate the chemical turnover of the aromatic precursor and corresponding anthropogenic contribution to the mixed aerosol. The estimated anthropogenic contributions were ranging from small (≈8%) up to significant fraction (50%) providing a suitable range to study the effect of aerosol composition on the aerosol volatility (volume fraction remaining (VFR) at 343 K: 0.86–0.94). The aromatic aerosol had higher oxygen to carbon ratio O/C and was less volatile than the biogenic fraction. However, in order to produce significant amount of aromatic SOA the reaction mixtures needed a higher OH dose that also increased O/C and provided a less volatile aerosol. The SOA yields, O/C, and f44 (the mass fraction of CO2+ ions in the mass spectra which can be considered as a measure of carboxylic groups) in the mixed photo-chemical experiments could be described as linear combinations of the corresponding properties of the pure systems. For VFR there was in addition an enhancement effect, making the mixed aerosol significantly less volatile than what could be predicted from the pure systems. A strong positive correlation was found between changes in volatility and O/C with the exception during dark hours where the SOA volatility decreased while O/C did not change significantly. Thus, this change in volatility under dark conditions as well as the anthropogenic enhancement is due to chemical or morphological changes not affecting O/C. KW - Luftreinhaltung Y1 - 2013 U6 - https://doi.org/10.5194/acp-13-2837-2013 SN - 1680-7324 VL - 13 IS - 5 SP - 2837 EP - 2855 PB - Copernicus ER - TY - RPRT A1 - Deckert, Carsten A1 - Keszler, Julia A1 - Schmitz, Helen A1 - Mohya, Ahmed T1 - Forecasting Game: Teaching Prospective Engineers Quantitative Forecasting Techniques with a Simulation Game N2 - In order to determine demand as precisely as possible, many businesses use several forecasting methods. The aim of forecasting is to determine future demand based on data from the past. The use of a specific method is not always easy and depends on a number of factors. To help prospective engineers find the most suitable forecasting method for a specific problem, a forecasting game was developed and then evaluated. The paper describes the design and the evaluation of the forecasting game. In order to provide an overview of existing forecasting methods, the first part of the paper examined the mathematical fundamentals of eight different forecasting methods and outlined the requirements for their application. The second part of the paper describes the creation of a forecasting game in which prospective engineers can learn how to determine the appropriate forecasting method for specific scenarios. In total, five scenarios covering the three different demand patterns (linear/stationary, trend and seasonal) as well as the forecast quality methods were developed and can be played through. For each scenario, the player has to choose the most appropriate forecasting method for a specific problem based on a self-created task description. To make the game as realistic as possible, a fictional company with a background story was designed. The last part was about the evaluation of the forecasting game. For the evaluation, a student survey to gather the opinions of the students was conducted. The results of the student survey show an overall positive evaluation of the simulation game by the students. However, the test also showed that the game takes a certain amount of time. Since only 15 of the approximately 30 students who tested the game participated in the evaluation, the results are not significant. T3 - Working Papers in Industrial Engineering - 5 Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-39057 SN - 2627-8375 CY - Düsseldorf ER - TY - CHAP A1 - Schröder, Joachim ED - Borggräfe, Henning ED - Jah, Akim T1 - Forced Accommodation for Jews in the Context of the Deportations at the Düsseldorf Abattoir (1939–1944) T2 - Deportations in the Nazi Era. Sources and Research N2 - During the period 1941 to 1944, the former Düsseldorf abattoir served as an assembly camp for almost 6,000 Jewish men, women and children from the administrative district of Düsseldorf prior to their deportation. Their deportation was the end of a long process of disenfranchisement and social isolation, the penultimate stage of which was eviction from their own or rented housing and confinement in forced accommodation: a ‘Judenhaus’ (‘Jews house’, a tenement building where Jews were housed), communal accommodation or a camp. This paper investigates for the first time the background to and the process of ‘residential segregation’ in this region. It names the various actors of local municipal authorities and the NSDAP involved and uses examples to describe the situation faced by those who were persecuted. KW - Segregation (Soziologie) KW - Deportation KW - Nationalsozialismus KW - Regierungsbezirk Düsseldorf KW - Judenverfolgung Y1 - 2023 SN - 9783110746464 U6 - https://doi.org/10.1515/9783110746464-014 VL - 2 SP - 229 EP - 248 PB - De Gruyter ER - TY - CHAP A1 - Krieter, Philipp A1 - Zerrer, Patrick A1 - Puschmann, Cornelius A1 - Geise, Stephanie ED - Boratto, Ludovico ED - Gena, Cristina ED - Marras, Mirko ED - Germanakos, Panagiotis ED - Popescus, Elvira T1 - Following Topics Across All Apps and Media Formats: Mobile Keyword Tracking as a Privacy-Friendly Data Source in Mobile Media Research T2 - UMAP Adjunct '24: Adjunct Proceedings of the 32nd ACM Conference on User Modeling, Adaptation and Personalization, Cagliari Italy, July 1 - 4, 2024 Y1 - 2024 SN - 979-8-4007-0466-6 U6 - https://doi.org/10.1145/3631700.3664879 SP - 126 EP - 131 PB - ACM CY - New York ER - TY - JOUR A1 - Rückert, Frank Ulrich A1 - Ibrar, Burhan A1 - Ahmed, Arslan A1 - Allweyer, Benjamin A1 - Hübner, Dirk A1 - Klinger, Friedrich A1 - Knaus, Hermann A1 - Benim, Ali Cemal T1 - Fluid flow and heat transfer of a novel passive cooling system for gearless wind turbines with a power range of 3–12 MW JF - Energy N2 - Today, the gearless horizontal axis wind turbines are mainstream in wind energy industry. High demands of electric power led to bigger systems and active cooling reduces the overall efficiency of the turbines. Passive cooling systems have been examined for the first time for a gearless wind energy generator with power range of 3–12 MW. With further developed heat conductors, it is possible to operate a wind generator in a larger power class with passive cooling components. This is accompanied by enormous cost savings due to elimination of costs for active cooling elements such as the use of fans, pumps, and heat exchangers. An additional factor is the significant reduction in necessary maintenance due to the minimized incidence of corrosion and wear. Design of the cooling fins and an ideal position of the generator within the housing of the wind turbine has been objectives. Mandatory is that maximum temperatures of the generator fins should stay under 155 °C, which could be reached with several designs for different heat exchanger geometries. KW - Windturbine KW - Wärmeübertragung KW - Numerische Strömungssimulation KW - Generator KW - Kühlung KW - Passive cooling KW - Gearless wind turbine Y1 - 2024 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-46594 SN - 0360-5442 VL - 312 PB - Elsevier ER - TY - JOUR A1 - Weber, Stephan A1 - Kuttler, Wilhelm A1 - Weber, Konradin T1 - Flow characteristics and particle mass and number concentration variability within a busy urban street canyon JF - Atmospheric Environment KW - Luftreinhaltung Y1 - 2006 U6 - https://doi.org/10.1016/j.atmosenv.2006.07.002 VL - 40 IS - 39 SP - 7565 EP - 7578 PB - Elsevier ER - TY - JOUR A1 - Marcinkowski, Frank A1 - de Haas, Hella A1 - Kohler, Sarah T1 - Flight or fight? - How the coronavirus pandemic has affected scientists’ willingness to engage with the public JF - Humanities and Social Sciences Communications N2 - During the coronavirus pandemic, scientists who worked to overcome the outbreak received recognition, but also opposition and even hostility. This article examines how the experience of the pandemic has affected the willingness of scientists to engage with the public. Derived from a comprehensive survey of 4207 scientists at German universities and research institutions, animosity towards scientists during the pandemic has created a sense of insecurity that may cause them to withdraw from the public eye. Depending on the relative strength of two cognitive appraisals, the severity of the threat and the appropriateness of the retreat option, the likelihood of respondents engaging with the public varies significantly. KW - COVID-19-Pandemie KW - Wissenschaftskommunikation KW - Bedrohung KW - Wahrnehmung KW - Öffentlichkeit Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-60444 SN - 2662-9992 VL - 12 PB - Springer Nature ER - TY - CHAP A1 - Wöldecke, Björn A1 - Marinos, Dionysios A1 - Geiger, Christian ED - Gehring, Sven ED - Boring, Sebastian ED - Quigley, Aaron T1 - Flexible Registration of Multiple Displays T2 - Proceedings of The International Symposium on Pervasive Displays, Copenhagen, 03.06.2014-04.06.2014 Y1 - 2014 UR - https://dl.acm.org/doi/proceedings/10.1145/2611009 SN - 9781450329521 U6 - https://doi.org/10.1145/2611009.2611030 SP - 86 EP - 91 PB - ACM CY - New York ER - TY - CHAP A1 - Rosenthal, Fabian A1 - Blättermann, Patrick A1 - Versümer, Siegbert T1 - flexcv: Python package for fitting, comparing, and logging multiple machine learning models using various cross-validation methods [Poster] T2 - Fortschritte der Akustik - DAGA 2024, 18. - 21. März 2024, Hannover N2 - The evaluation of listening experiments and studies on acoustics not only requires basic knowledge of statistics, but also poses challenges in the implementation of different methodologies. Especially for small sample sizes and peculiarities regarding hierarchical data structures, the need to individualize evaluation scripts arises. Therefore, we introduce flexcv, a powerful machine learning package for Python for evaluating various models on experimental tabular data, especially with small sample sizes. It supports random effects evaluation (including random slopes) for both linear and non-linear regressors, providing broad applicability to different experiments and research questions.flexcv quickly allows to perform nested cross-validation on a variety of models for comparison with each other. On the one hand, the implementation of a flexible interface simplifies the exchange of methods in the script, allowing researchers to change cross-validation methods without having to touch the actual cross-validation code. On the other hand, extensive online logging allows and simplifies the evaluation and experiment tracking along the process and different machines. Y1 - 2024 PB - Deutsche Gesellschaft für Akustik e.V. CY - Berlin ER - TY - GEN A1 - Rosenthal, Fabian A1 - Versümer, Siegbert A1 - Blättermann, Patrick T1 - flexcv: Easy and flexible nested cross validation for tabular data in python N2 - Python package customizing nested cross validation for tabular data. KW - Software KW - Python (Programmiersprache) Y1 - 2024 U6 - https://doi.org/10.5281/zenodo.10160846 PB - Zenodo CY - Genf ET - Version v24.0-beta ER - TY - CHAP A1 - Weber, Konradin A1 - Fischer, Christian A1 - Vogel, Andreas A1 - Pohl, Tobias A1 - Böhlke, Christoph A1 - Lau, Hendrik A1 - Eliasson, Jonas A1 - Palsson, Thorgeir ED - Mladenov, Valeri ED - Tasho, Tashev ED - Hui, Wang ED - Ivan, Kralov ED - Sergey, Stankevich ED - Pelin, Yildiz ED - Jon, Burley T1 - First results of an airborne release of volcanic ash for testing of volcanic ash plume measurement instruments T2 - Recent Advances in Energy and Environmental Management KW - Luftreinhaltung KW - Vulkanasche KW - Messtechnik KW - Forschungsflugzeug Y1 - 2013 VL - Energy, Environmental and Structural Engineering Series 13 SP - 169 EP - 172 PB - WSEAS ER - TY - JOUR A1 - Benim, Ali Cemal T1 - Finite element solution of an enclosed turbulent diffusion flame JF - International Journal for Numerical Methods in Fluids N2 - A finite element formulation of enclosed turbulent diffusion flames is presented. A primitive variables approach is preferred in the analysis. A mixed interpolation is employed for the velocity and pressure. In the solution of the Navier‐Stokes equations, a segregated formulation is adopted, where the pressure discretization equation is obtained directly from the discretized continuity equation, considering the velocity‐pressure relationships in the discretized momentum equations. The state of turbulence is defined by a κ–ϵ model. Near solid boundaries, a wall function approach is employed. The combustion rates are estimated using the eddy dissipation concept. The expensive direct treatment of the integrodifferential equations of radiation is avoided by employing the moment method, which allows the derivation of an approximate local field equation for the radiation intensity. The proposed finite element model is verified by investigating a technical turbulent diffusion flame of semi‐industrial size, and comparing the results with experiments and finite difference predictions. KW - Finite-Elemente-Methode KW - Turbulente Diffusionsflamme KW - Navier-Stokes-Gleichung KW - Numerische Strömungssimulation Y1 - 1989 U6 - https://doi.org/10.1002/fld.1650090305 SN - 0271-2091 VL - 9 IS - 3 SP - 289 EP - 303 PB - Wiley ER - TY - JOUR A1 - Benim, Ali Cemal T1 - Finite element analysis of confined turbulent swirling flows JF - International Journal for Numerical Methods in Fluids N2 - The finite element method is applied to incompressible and statistically steady confined turbulent swirling flows. A velocity–pressure formulation is employed. The momentum and continuity equations are solved using a segregated algorithm. Two turbulence models, namely the standard κ–ε model and the algebraic stress model, are considered. It is shown that the algebraic stress model leads to significantly more accurate results in swirling flows compared to the κ–ε model. A novel way of implementing the algebraic stress model is presented in which the stresses are coupled to the Navier–Stokes equations in such a way that they ‘correct’ the effective viscosity hypothesis. This formulation seems to provide a convenient approach for finite elements. In deriving the discretization equations, a streamline‐upwind/Petrov–Galerkin method is employed. Comparisons performed between various upwind schemes show that the numerical solution may be substantially affected by the particular upwind procedure used. The analysis is extended to the prediction of particle motion in turbulent swirling flow fields. Here the fluid turbulence is modelled adopting a stochastic approach. The influence of turbulence modelling on particle movement is investigated. KW - Finite-Elemente-Methode KW - Turbulente Strömung KW - Navier-Stokes-Gleichung KW - Numerische Strömungssimulation Y1 - 1990 U6 - https://doi.org/10.1002/fld.1650110602 SN - 0271-2091 VL - 11 IS - 6 SP - 697 EP - 717 PB - Wiley ER - TY - CHAP A1 - Willers, Oliver A1 - Curcic, Michael A1 - Bosch, Robert ED - Thomas, Otto T1 - Fingerprinting MEMS Gyroscopes T2 - 11th Smart Systems Integration Conference 2017 International Conference and Exhibition on Integration Issues of Miniaturized Systems Cork, Ireland 8-9 March 2017 Y1 - 2017 SN - 978-1-5108-4478-0 PB - Curran Associates, Inc. ER - TY - JOUR A1 - Henin, Stefano A1 - Petit, Yannick A1 - Rohwetter, Philipp A1 - Stelmaszczyk, Kamil A1 - Hao, Zuoqiang A1 - Nakaema, Walter Morinobu A1 - Vogel, Andreas A1 - Pohl, Tobias A1 - Schneider, Friedhelm A1 - Kasparian, Jérôme A1 - Weber, Konradin A1 - Wöste, Ludger A1 - Wolf, Jean-Pierre T1 - Field measurements suggest the mechanism of laser-assisted water condensation JF - Nature Communications N2 - Because of the potential impact on agriculture and other key human activities, efforts have been dedicated to the local control of precipitation. The most common approach consists of dispersing small particles of dry ice, silver iodide, or other salts in the atmosphere. Here we show, using field experiments conducted under various atmospheric conditions, that laser filaments can induce water condensation and fast droplet growth up to several μm in diameter in the atmosphere as soon as the relative humidity exceeds 70%. We propose that this effect relies mainly on photochemical formation of p.p.m.-range concentrations of hygroscopic Hno3, allowing efficient binary Hno3–H2o condensation in the laser filaments. Thermodynamic, as well as kinetic, numerical modelling based on this scenario semiquantitatively reproduces the experimental results, suggesting that particle stabilization by Hno3 has a substantial role in the laser-induced condensation. KW - Luftreinhaltung KW - Kondensation KW - Laser KW - Niederschlag Y1 - 2011 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-52439 SN - 2041-1723 VL - 2 IS - 1 PB - Springer Nature ER - TY - CHAP A1 - Lutz, Katharina A1 - Boehnke, Mandy A1 - Huinink, Johannes A1 - Tophoven, Silke ED - Oláh, Livia Sz ED - Frątczak, Ewa T1 - Female employment, reconciliation policies, and childbearing intentions in East and West Germany. T2 - Childbearing, women's employment and work-life balance policies in contemporary Europe Y1 - 2013 SN - 1137318546 SP - 97 EP - 134 PB - Palgrave Macmillan CY - New York ER - TY - JOUR A1 - Stuhlsatz, André A1 - Lippel, Jens A1 - Zielke, Thomas T1 - Feature extraction with deep neural networks by a generalized discriminant analysis JF - IEEE transactions on neural networks and learning systems N2 - We present an approach to feature extraction that is a generalization of the classical linear discriminant analysis (LDA) on the basis of deep neural networks (DNNs). As for LDA, discriminative features generated from independent Gaussian class conditionals are assumed. This modeling has the advantages that the intrinsic dimensionality of the feature space is bounded by the number of classes and that the optimal discriminant function is linear. Unfortunately, linear transformations are insufficient to extract optimal discriminative features from arbitrarily distributed raw measurements. The generalized discriminant analysis (GerDA) proposed in this paper uses nonlinear transformations that are learnt by DNNs in a semisupervised fashion. We show that the feature extraction based on our approach displays excellent performance on real-world recognition and detection tasks, such as handwritten digit recognition and face detection. In a series of experiments, we evaluate GerDA features with respect to dimensionality reduction, visualization, classification, and detection. Moreover, we show that GerDA DNNs can preprocess truly high-dimensional input data to low-dimensional representations that facilitate accurate predictions even if simple linear predictors or measures of similarity are used. Y1 - 2012 U6 - https://doi.org/10.1109/tnnls.2012.2183645 VL - 23 IS - 4 SP - 596 EP - 608 PB - IEEE ER - TY - CHAP A1 - Stuhlsatz, André A1 - Lippel, Jens A1 - Zielke, Thomas T1 - Feature Extraction for Simple Classification T2 - 2010 20th International Conference on Pattern Recognition, August 23 - 26, 2010 , Istanbul, Turkey Y1 - 2010 SN - 978-0-7695-4109-9 U6 - https://doi.org/10.1109/ICPR.2010.377 SN - 1051-4651 SP - 1525 EP - 1528 PB - IEEE ER - TY - CHAP A1 - Gaida, Philipp A1 - Jahr, Andreas A1 - Weinberg, Kerstin ED - Dłużewsk, Paweł ED - Jurczak, Grzegorz ED - Young, Toby D. T1 - FEA and experimental validation of an electroactive polymer actuator [Abstract] T2 - Third International Conference on Material Modelling incorporating the Thirteenth European Mechanics of Materials Conference, September 8–11, 2013,Warsaw, Poland Y1 - 2013 SN - 978-83-89687-83-8 IS - 185 PB - Instytut Podstawowych Problemów Techniki Polskiej Akademii Nauk CY - Warszawa ER -