TY - JOUR A1 - Wojciechowski, Manfred A1 - Pogscheba, Patrick T1 - Building a COVID-Safe Navigation App Using a Meta-Model Based Context Server JF - sensors N2 - Building context-aware applications is an already widely researched topic. It is our belief that context awareness has the potential to supplement the Internet of Things, when a suitable methodology including supporting tools will ease the development of context-aware applications. We believe that a meta-model based approach can be key to achieving this goal. In this paper, we present our meta-model based methodology, which allows us to define and build application-specific context models and the integration of sensor data without any programming. We describe how that methodology is applied with the implementation of a relatively simple context-aware COVID-safe navigation app. The outcome showed that programmers with no experience in context-awareness were able to understand the concepts easily and were able to effectively use it after receiving a short training. Therefore, context-awareness is able to be implemented within a short amount of time. We conclude that this can also be the case for the development of other context-aware applications, which have the same context-awareness characteristics. We have also identified further optimization potential, which we will discuss at the conclusion of this article. KW - context awareness KW - internet of things KW - development methodology KW - meta model KW - context query language Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-39570 SN - 1424-8220 VL - 22 IS - 24 SP - 1 EP - 14 PB - MDPI ER - TY - JOUR A1 - Wohlers, Luis Constantin A1 - Müller, Patrick A1 - Braun, Alexander T1 - Original image noise reconstruction for spatially-varying filtered driving scenes JF - Electronic Imaging: Society for Imaging Science and Technology Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-41479 SN - 2470-1173 VL - 34 IS - 16 SP - 1 EP - 7 PB - Society for Imaging Sciences and Technology ER - TY - JOUR A1 - Wittpahl, Christian A1 - Deegan, Brian A1 - Black, Bob A1 - Braun, Alexander T1 - An analytic-numerical image flicker study to test novel flicker metrics JF - Electronic Imaging: Society for Imaging Science and Technology Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-35671 SN - 2470-1173 IS - 17 SP - 1 EP - 8 PB - Society for Imaging Science and Technology ER - TY - CHAP A1 - von Berg, Markus A1 - Schwörer, Paul A1 - Prinz, Lukas A1 - Steffens, Jochen T1 - Analysis of physical and perceptual properties of room impulse responses: development of an online tool T2 - Forum Acusticuum 2023: 10th Convention of European Acoustics Association, Turin, Italy, 11th-15th September 2023 N2 - Over the past decades, research in room acoustics has established several derivative measures of an impulse response, some of which are incorporated in the ISO 3382 standards. These parameters intend to represent perceptual qualities, but were developed without a consistent modeling of room acoustical perception. More recent research proposed comprehensive inventories of room acoustic perception that are purely based on evaluations by human subjects, such as the Room Acoustical Quality Index (RAQI). In this work RA-QI scores acquired for 70 room impulse responses were predicted from room acoustical parameters. Except for Reverberance, the prediction of RAQI factors performed rather poor. In most cases, the sound source had a greater impact on RAQI scores. All analyses are published in an online tool, where users can upload omnidirectional and binaural impulse responses, and instantly obtain and visualize several physical descriptors, as well as predicted RAQI scores for three different sound sources. So far, acceptable prediction accuracy is achieved for Reverberance, Strength, Irregular Decay, Clarity and Intimacy. Larger data sets of evaluated impulse responses are required to improve the model performance and enable reliable predictions of room acoustical quality. Therefore, the administration of RAQI evaluations within the website is currently being developed. Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-41955 PB - EAA ER - TY - CHAP A1 - von Berg, Markus A1 - Prinz, Lukas A1 - Steffens, Jochen T1 - Comparing individual perception of timbre and reverberance BT - Proceedings of the 24th International Congress on Acoustics N2 - Room reverberation alters the spatial impression and timbre of a sound by modulating its spectral and temporal characteristics. Thus, we argue that, on a perceptual level, reverberation basically breaks down into interaural differences and spectro-temporal cues and that the separation of a perceived timbre into a sound source and a surrounding room is a purely cognitive process. To investigate the connection between the perception of reverberation cues and timbre analysis, the sensitivity for changes in reverberation was compared to timbre perception abilities. The Timbre Perception Test was used to measure the perception of the temporal envelope, spectral centroid, and spectral flux of artificial sounds. Sensitivity for changes in reverberation time was tested with a discrimination task using speech and noise with speech-alike spectral and temporal envelopes as source signals. Musical and acoustical expertise was assessed through the Goldsmiths Musical Sophistication Index and self-reports on experience with and knowledge of acoustics. There was a considerable correlation between timbre and reverberance perception ability, but timbre perception and academic experience predicted only 41% of the variance in reverberance perception. Still, perception abilities related to similar acoustical phenomena seem to be better indicators of listening skills than self-reports on acoustical or musical expertise. KW - Timbre KW - Klangfarbe KW - Reverberation KW - Nachhall Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-38706 UR - https://ica2022korea.org/data/Proceedings_A11.pdf CY - Gyeoungju, Südkorea ER - TY - RPRT A1 - Vogel, Peter T1 - Investing as Random Trial T2 - Trading N2 - We introduce an investment algorithm for a market of individual securities. The investment algorithm is derived from constraints depending on investment parameters in order to limit the risk and to take into account an individual investor. One constraint is devoted to trading costs. Purchased securities are selected randomly among securities that meet the buy condition, making trading a random trial. Simulations with historical price data are demonstrated for a simple example: The buy condition is evaluated on the basis of the price relationship for two subsequent trading days and the sales condition is defined by holding securities only for one day. A trading expert evaluates the expected return for the investment algorithm with respect to the random selection. Thus, the expert informs precisely on how many market players perform using the same investment algorithm. Its findings are for a parametrized set of buy conditions simultaneously, which makes a trading expert a valuable tool for theorists as well as for practitioners. In our example, the trading expert demonstrated clearly a significant mean reversion effect for a horizon of one day. T3 - Trading - 1 KW - investment constraints KW - investment algorithm KW - investing as random trial KW - trading expert KW - mean reversion Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-11118 UR - https://opus4.kobv.de/opus4-hs-duesseldorf/1501 SN - 2567-2347 IS - 1 EP - 1 PB - Hochschule Düsseldorf CY - Düsseldorf ER - TY - GEN A1 - Vogel, Peter T1 - Marktdaten T2 - Trading N2 - Die in der Schriftenreihe Trading verwendeten Forschungsdaten beinhalten historische Kursdaten, geliefert von Lenz+Partner AG (Deutschland), für eine Auswahl an Aktien. Die Datei „FEBRDUSA_1“ zeigt diese Auswahl in Form der deutschen Wertpapierkennnummer (Spalte „Titel“), des Handelszeitraums (Spalten „Beginn“ und „Ende“) und des Aktiennamens. Kursdaten sind in dieser Datei nicht enthalten, sondern liegen in einer umfangreichen Datenbank vor. Die Marktdaten umfassen 867 Aktien und sind das Ergebnis eines im Jahr 2015 durchgeführten Auswahlprozesses mit dem Ziel, Datenqualität und Handelbarkeit der Aktien zu verbessern. Es wurden folgende Bedingungen gefordert: - Die Aktien werden an der Frankfurter Börse gehandelt. - Sie sind in einem der deutschen Aktienindizes DAX, MDAX, TECDAX, SDAX, HDAX, CDAX, Technology All Share, Prime All Share und GEX oder in den amerikanischen Aktienindizes S&P 500 oder Nasdaq 100 gelistet. - Die Kursdaten der in Frankfurt gehandelten Aktien enden nicht vor dem Jahr 2014. - Der (unbereinigte) Eröffnungskurs Ende 2013 beträgt mindestens 1 EUR. Diese Bedingung soll dazu beitragen, das Handeln von „penny stocks“ zu verhindern. Die vorliegende Marktdefinition resultierte in 867 Aktien, die frühestens am 11. Dezember 2014 enden, sodass eine Auswertung der Marktdaten mit vollständigen Kurswerten bis zu diesem Zeitpunkt möglich ist. Der Markt ist groß genug, um interessante Kaufbedingungen mit einer ausreichend großen Anzahl an Kaufkandidaten zu untersuchen. T3 - Trading - 1.1 KW - trading Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-15015 UR - https://opus4.kobv.de/opus4-hs-duesseldorf/815 UR - https://doi.org/10.20385/2567-2347/2018.2 SN - 2567-2347 PB - Hochschule Düsseldorf CY - Düsseldorf ER - TY - JOUR A1 - Versümer, Siegbert A1 - Steffens, Jochen A1 - Blättermann, Patrick A1 - Becker-Schweitzer, Jörg T1 - Modelling evaluations of low-level sounds in everyday situations using linear machine learning for variable selection JF - Frontiers in Psychology KW - DOAJ Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-23779 SN - 1664-1078 N1 - Supplementary Material The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fpsyg.2020.570761/full#supplementary-material VL - 11 PB - Frontiers 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 - CHAP A1 - Tiator, Marcel A1 - Geiger, Christian A1 - Grimm, Paul ED - Dilkina, B. ED - Catala, A. ED - Giacomo, G. De T1 - Point Cloud Segmentation with Deep Reinforcement Learning T2 - ECAI 2020: 24th European Conference on Artificial Intelligence, 29 August-8 September 2020, Santiago De Compostela, Spain - Including 10th Conference on Prestigious Applications of Artificial Intellig Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-30872 SN - 978-1-64368-100-9 SP - 2768 EP - 2775 PB - IOS Press ER - TY - THES A1 - Thiel, Vanessa T1 - African Artivism: Politically engaged art in Sub-Saharan Africa T3 - Hervorragende Abschlussarbeiten im Fachbereich Sozial- und Kulturwissenschaften - 26 KW - Senegal KW - Hip Hop KW - Zimbabwe KW - Satire KW - critical art KW - africa KW - activism KW - WiSe17/18 KW - Masterthesis Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-12035 CY - Düsseldorf ER - TY - RPRT A1 - Thiel, Christoph T1 - Constructing lattice bases by means of approximations N2 - The construction of a basis of a certain lattice of interest is a basic tool in many fields of algorithmic number theory. All too often we can not compute with the original lattices because of irrational numbers involved but have to work with approximations of them. While helpful bounds were shown about the reduction of lattice bases in cite{buchmann94reducing}, here we introduce the notion of a $(epsilon,delta)$-constructable basis of a lattice and determine the precision of vectors that is necessary to extend a set to a $(epsilon,delta)$-constructable basis. T2 - Constructing lattice bases by means of approximations KW - Zahlentheorie KW - Gitter KW - Approximation KW - number theorie KW - lattices KW - approximation KW - FHD Y1 - 2009 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-6128 CY - Düsseldorf ER - TY - JOUR A1 - Stuhrmann, Björn A1 - Huber, Florian A1 - Käs, Josef T1 - Robust organizational principles of protrusive biopolymer networks in migrating living cells JF - Plos One N2 - Cell migration is associated with the dynamic protrusion of a thin actin-based cytoskeletal extension at the cell front, which has been shown to consist of two different substructures, the leading lamellipodium and the subsequent lamellum. While the formation of the lamellipodium is increasingly well understood, organizational principles underlying the emergence of the lamellum are just beginning to be unraveled. We report here on a 1D mathematical model which describes the reaction-diffusion processes of a polarized actin network in steady state, and reproduces essential characteristics of the lamellipodium-lamellum system. We observe a steep gradient in filament lengths at the protruding edge, a local depolymerization maximum a few microns behind the edge, as well as a differential dominance of the network destabilizer ADF/cofilin and the stabilizer tropomyosin. We identify simple and robust organizational principles giving rise to the derived network characteristics, uncoupled from the specifics of any molecular implementation, and thus plausibly valid across cell types. An analysis of network length dependence on physico-chemical system parameters implies that to limit array treadmilling to cellular dimensions, network growth has to be truncated by mechanisms other than aging-induced depolymerization, e.g., by myosin-associated network dissociation at the transition to the cell body. Our work contributes to the analytical understanding of the cytoskeletal extension's bisection into lamellipodium and lamellum and sheds light on how cells organize their molecular machinery to achieve motility. KW - DOAJ Y1 - 2011 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-34901 SN - 1932-6203 N1 - Funding: This work has been supported by the Leipzig Graduate College ‘‘GK 1097 InterNeuro - Interdisciplinary Approaches in Cellular Neuroscience’’ (http:// www.uni-leipzig.de/˜ineuro/) and the Graduate School ‘‘Leipzig School of Natural Sciences - Building with Molecules and Nano-objects (BuildMoNa)’’ (http://www. buildmona.de/). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. VL - 6 IS - 1 PB - Public Library of Science (PLoS) ER - TY - JOUR A1 - Strucks, Peter A1 - Watermann, Clara A1 - Weber, Konradin A1 - Kaluza, Stefan T1 - Systematic Investigations of Vibrational and Fluid‐Mechanical Stability of Coated Monolithic Catalysts JF - Chemie Ingenieur Technik N2 - Heterogeneous catalysts usually consist of porous, inorganic materials. Especially in the mobile application, e.g., in exhaust gas catalysis as a part of the gas line of an engine, there are loads due to vibrations and high gas velocities. It can be assumed that physical stress will lead to a loss of the catalytically active coating. The present contribution describes experimental setups and methods for a systematic and reproducible investigation of the main influences to the mass loss due to vibrational and fluid‐mechanical stress caused by particle‐free gas flows. KW - Design of experiments KW - Extruded catalysts KW - Mechanical stability Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-28930 SN - 1522-2640 VL - 93 IS - 5 SP - 1 EP - 6 PB - Wiley ER - TY - JOUR A1 - Steffens, Jochen A1 - Wilczek, Tobias A1 - Weinzierl, Stefan T1 - Junk Food or Haute Cuisine to the Ear? – Investigating the Relationship Between Room Acoustics, Soundscape, Non-Acoustical Factors, and the Perceived Quality of Restaurants JF - Frontiers in Built Environment N2 - Sound and music are well-studied aspects of the quality of experience in restaurants; the role of the room acoustical conditions, their influence on the visitors’ soundscape evaluation and their impact on the overall customer satisfaction in restaurants, however, has received less scientific attention. The present field study therefore investigated whether sound pressure level, reverberation time, and soundscape pleasantness can predict factors associated with overall restaurant quality. In total, 142 persons visiting 12 restaurants in Berlin rated relevant acoustical and non-acoustical factors associated with restaurant quality. Simultaneously, the A-weighted sound pressure level (LA,eq,15) was measured, and the reverberation time in the occupied state (T20,occ) was obtained by measurements performed in the unoccupied room and a subsequent calculation of the occupied condition according to DIN 18041. Results from linear mixed-effects models revealed that both the LA,eq,15 and T20,occ had a significant influence on soundscape pleasantness and eventfulness, whereby the effect of T20,occ was meditated by the LA,eq,15. Also, the LA,eq,15 as well as soundscape pleasantness were significant predictors of overall restaurant quality. A comprehensive structural equation model including both acoustical and non-acoustical factors, however, indicates that the effect of soundscape pleasantness on overall restaurant quality is mediated by the restaurant’s atmosphere. Our results support and extend previous findings which suggest that the acoustical design of restaurants involves a trade-off between comfort and liveliness, depending on the desired character of the place. KW - DOAJ Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-32115 SN - 2297-3362 N1 - The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fbuil.2021.676009/full#supplementary-material; ut:000655121500001 VL - 676009 PB - Frontiers ER - TY - JOUR A1 - Spiegel, Thomas T1 - Impact of Renewable Energy Expansion to the Balancing Energy Demand of Differential Balancing Groups JF - Journal of Sustainable Development of Energy, Water and Environment Systems N2 - The research addresses the present situation on the German electricity market caused by variable renewable energy sources. The increasing number of households with photovoltaic and battery storage systems and their impacts require special attention. These systems change the traditional electricity customer from the sole electricity consumer to an electricity producer and consumer in one person. These so-called prosumers differ in their actual electricity demand from the initially estimated electricity demand with standard load profile. This discrepancy results in deviations within a differential balancing group. Thereby, the main finding of this research is a significant higher balancing energy demand with the expansion of photovoltaic and battery storage systems. Hence, the standard load profile is particularly not suitable for differential balancing groups with a high penetration of solar systems and still less suitable for groups with solar and battery storage systems KW - Balance responsible party KW - Balancing energy KW - Differential balancing group KW - Electricity schedule registration KW - peer KW - Photovoltaic and battery storage systems KW - Prosumer KW - Standard load profile Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-29207 SN - 1848-9257 VL - 6 IS - 4 SP - 784 EP - 799 PB - SDEWES ER - TY - JOUR A1 - Shahzad, Azeem A1 - Gulistan, Uzma A1 - Ali, Ramzan A1 - Iqbal, Azhar A1 - Benim, Ali Cemal A1 - Kamran, Muhammad A1 - Khan, Salah Ud-Din A1 - Khan, Shahab Ud-Din A1 - Farooq, Aamir T1 - Numerical Study of Axisymmetric Flow and Heat Transfer in a Liquid Film over an Unsteady Radially Stretching Surface JF - Mathematical Problems in Engineering Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27755 N1 - Acknowledgments The authors would like to sincerely appreciate funding from Researchers Supporting Project (no. RSP-2020/58), King Saud University, Riyadh, Saudi Arabia. R. Ali acknowledges the School of Art and Sciences, University of Central Asia, Kyrgyz Republic, for travel grant to visit the Department of Basic Sciences, UET, Taxila, and CFS, Düsseldorf. VL - 2020 SP - 1 EP - 9 PB - Hindawi ER - TY - GEN A1 - Seidel, Carl Anton T1 - Jumping Humanoid Simulink Simulation With Three Hill-Type Muscle Models N2 - This paper investigates the implementation of a human body model for the simulation of a jumping motion in Simulink. It contains details to get an insight into modern biomechanics without previous experience. In the simulation, a Hill-Type muscle is used to generate joint momentum with a phenomenologically realistic relationship between muscle length and force. The simulation published with this article is one of many solutions to design a humanoid simulation. The paper guides through the implemented build and explains its range of application. KW - biomechanics KW - humanoid Simulation KW - locomotion study KW - Simulation of Mechanical Systems Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-33765 CY - Düsseldorf ER - TY - JOUR A1 - Schultz, Laura T1 - Methods of Political Influence of Weak Interests Using the Example of the Reform Process of the Bundesteilhabegesetz (Federal Participation Act) JF - Journal of Policy Practice and Research KW - Reform process KW - Participation KW - Weak interests KW - Germany KW - Power resources KW - Lobbying Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40488 SN - 2662-1517 SP - 1 EP - 14 PB - Springer Nature ER - TY - JOUR A1 - Schreiber, Andreas A1 - Struminksi, Regina T1 - Visualizing the Provenance of Personal Data Using Comics JF - Computers KW - DOAJ Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40286 SN - 2073-431X VL - 7 IS - 1 PB - MDPI ER - TY - JOUR A1 - Schramm, Sebastian A1 - Adam, Mario T1 - Storage in Solar Process Heat Applications JF - Energy Procedia KW - Solare-Prozesswärme-Standards Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27244 SN - 1876-6102 N1 - PII: S1876610214003981 VL - 48 SP - 1202 EP - 1209 PB - Elsevier ER - TY - JOUR A1 - Schorn, Michelle A. A1 - Verhoeven, Stefan A1 - Ridder, Lars A1 - Huber, Florian A1 - Acharya, Deepa D. A1 - Aksenov, Alexander A. A1 - Aleti, Gajender A1 - Moghaddam, Jamshid Amiri A1 - Aron, Allegra T. A1 - Aziz, Saefuddin A1 - Bauermeister, Anelize A1 - Bauman, Katherine D. A1 - Baunach, Martin A1 - Beemelmanns, Christine A1 - Beman, J. Michael A1 - Berlanga-Clavero, María Victoria A1 - Blacutt, Alex A. A1 - Bode, Helge B. A1 - Boullie, Anne A1 - Brejnrod, Asker A1 - Bugni, Tim S. A1 - Calteau, Alexandra A1 - Cao, Liu A1 - Carrión, Víctor J. A1 - Castelo-Branco, Raquel A1 - Chanana, Shaurya A1 - Chase, Alexander B. A1 - Chevrette, Marc G. A1 - Costa-Lotufo, Leticia V. A1 - Crawford, Jason M. A1 - Currie, Cameron R. A1 - Cuypers, Bart A1 - Dang, Tam A1 - de Rond, Tristan A1 - Demko, Alyssa M. A1 - Dittmann, Elke A1 - Du, Chao A1 - Drozd, Christopher A1 - Dujardin, Jean-Claude A1 - Dutton, Rachel J. A1 - Edlund, Anna A1 - Fewer, David P. A1 - Garg, Neha A1 - Gauglitz, Julia M. A1 - Gentry, Emily C. A1 - Gerwick, Lena A1 - Glukhov, Evgenia A1 - Gross, Harald A1 - Gugger, Muriel A1 - Guillén Matus, Dulce G. A1 - Helfrich, Eric J. N. A1 - Hempel, Benjamin-Florian A1 - Hur, Jae-Seoun A1 - Iorio, Marianna A1 - Jensen, Paul R. A1 - Kang, Kyo Bin A1 - Kaysser, Leonard A1 - Kelleher, Neil L. A1 - Kim, Chung Sub A1 - Kim, Ki Hyun A1 - Koester, Irina A1 - König, Gabriele M. A1 - Leao, Tiago A1 - Lee, Seoung Rak A1 - Lee, Yi-Yuan A1 - Li, Xuanji A1 - Little, Jessica C. A1 - Maloney, Katherine N. A1 - Männle, Daniel A1 - Martin H, Christian A1 - McAvoy, Andrew C. A1 - Metcalf, Willam W. A1 - Mohimani, Hosein A1 - Molina-Santiago, Carlos A1 - Moore, Bradley S. A1 - Mullowney, Michael W. A1 - Muskat, Mitchell A1 - Nothias, Louis-Félix A1 - O'Neill, Ellis C. A1 - Parkinson, Elizabeth I. A1 - Petras, Daniel A1 - Piel, Jörn A1 - Pierce, Emily C. A1 - Pires, Karine A1 - Reher, Raphael A1 - Romero, Diego A1 - Roper, M. Caroline A1 - Rust, Michael A1 - Saad, Hamada A1 - Saenz, Carmen A1 - Sanchez, Laura M. A1 - Sørensen, Søren Johannes A1 - Sosio, Margherita A1 - Süssmuth, Roderich D. A1 - Sweeney, Douglas A1 - Tahlan, Kapil A1 - Thomson, Regan J. A1 - Tobias, Nicholas J. A1 - Trindade-Silva, Amaro E. A1 - van Wezel, Gilles P. A1 - Wang, Mingxun A1 - Weldon, Kelly C. A1 - Zhang, Fan A1 - Ziemert, Nadine A1 - Duncan, Katherine R. A1 - Crüsemann, Max A1 - Rogers, Simon A1 - Dorrestein, Pieter C. A1 - Medema, Marnix H. A1 - van der Hooft, Justin J. J. T1 - A community resource for paired genomic and metabolomic data mining JF - Nature Chemical Biology Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-34708 UR - http://www.ncbi.nlm.nih.gov/pubmed/33589842 SN - 1552-4469 N1 - Additional information: Supplementary information The online version contains supplementary material available at https://doi.org/10.1038/s41589-020-00724-z. VL - 17 IS - 4 SP - 363 EP - 368 PB - Nature ER - TY - JOUR A1 - Schittkowski, Julian A1 - Ruland, Holger A1 - Laudenschleger, Daniel A1 - Girod, Kai A1 - Kähler, Kevin A1 - Kaluza, Stefan A1 - Muhler, Martin A1 - Schlögl, Robert T1 - Methanol Synthesis from Steel Mill Exhaust Gases: Challenges for the Industrial Cu/ZnO/Al 2 O 3 Catalyst JF - Chemie Ingenieur Technik Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-34526 SN - 1522-2640 N1 - We gratefully appreciate the support received from the Federal Ministry of Education and Research (Bundesministerium für Bildung und Forschung, BMBF, Verbundvorhaben Carbon2Chem®). VL - 90 IS - 10 SP - 1419 EP - 1429 PB - Wiley ER - TY - JOUR A1 - Saeedrashed, Younis Saida A1 - Benim, Ali Cemal T1 - A computational investigation of the hydrodynamics of the Badush dam in northern Iraq JF - MATEC Web of Conferences Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27997 SN - 2261-236X VL - 240 PB - edp sciences ER - TY - JOUR A1 - Saeedrashed, Younis Saida A1 - Benim, Ali Cemal T1 - Validation Methods of Geometric 3D-CityGML Data for Urban Wind Simulations JF - E3S Web of Conferences KW - DOAJ Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27906 SN - 2267-1242 VL - 128 PB - edp sciences ER - TY - JOUR A1 - Reims, Nancy A1 - Tophoven, Silke T1 - Double Burden of Disability and Poverty: Does Vocational Rehabilitation Ease the School–to–Work Transition? JF - Social Inclusion N2 - Poor young people more often face health difficulties, (learning) disabilities, and are overrepresented in special schools. Consequently, youth from poor households disproportionately frequently participate in disability‐specific programs aiming to improve their educational levels and labor market opportunities. They face a double burden of disability and poverty. In our study, we look at poor and non‐poor youth with disabilities (YPWD) who participate in vocational rehabilitation (VR) and whether VR helps them (a) in transitioning into employment and (b) in leaving poverty. We examine the association between the receipt of initial basic income support (BIS) as a poverty indicator, later labor market outcomes, and earned vocational qualification using administrative data. We make use of a sample of all persons accepted for VR in 2010 (N = 36,645). We employ logit models on VR attendees’ labor market outcomes three and five years after being accepted for VR as well as on their earned vocational qualifications. Beside initial poverty status, we control for educational level, type, and degree of disability and program pattern during the VR process. Our findings show that YPWD from poor households have a decreased likelihood of a vocational certificate and employment. Additionally, they are more likely to receive BIS than young people not from poor households and thus more likely to remain poor. In conclusion, VR seems to support poor YPWD less in their school‐to‐work transitions. Thus, disability‐specific programs should be more tailored to the social situations of participants, and counsellors should be more sensitive to their social backgrounds. KW - DOAJ KW - youth KW - vocational rehabilitation KW - labor market integration KW - school‐to‐work transition KW - germany KW - basic income support Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40131 SN - 2183-2803 N1 - This article is part of the issue “Promoting Inclusion and Equality in Education” edited Allen Thurston (Queen’s University Belfast, UK) and Tien‐Hui Chiang (Anhui Normal University, China). VL - 9 IS - 4 SP - 92 EP - 102 PB - Cogitatio ER - TY - JOUR A1 - Reich, Marius A1 - Gottschald, Jonas A1 - Riegebauer, Philipp A1 - Adam, Mario T1 - Predictive Control of District Heating System Using Multi-Stage Nonlinear Approximation with Selective Memory JF - Energies KW - BestHeatNet KW - DOAJ Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-33627 SN - 1996-1073 VL - 13 IS - 24 PB - MDPI ER - TY - CHAP A1 - Rakow, Thomas C. A1 - Kless, André A1 - Hasler, Charlotte A1 - Knolle, Harm A1 - Faeskorn-Woyke, Heide A1 - Saatz, Inga Marina A1 - Lambert, Jens A1 - Focken, Mareike ED - König-Ries, Birgitta ED - Scherzinger, Stefanie ED - Lehner, Wolfgang ED - Vossen, Gottfried T1 - Developing OERs for Teaching Database Systems: A Two-Year Effort of Four Universities of Applied Sciences T2 - GI Edition Proceedings Band 331 "BTW 2023" : 6. - 10. März 2023 in Dreden KW - database systems KW - open educational resources KW - OER KW - higher education Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40611 SN - 9783885797258 PB - Köllen CY - Bonn ER - TY - CHAP A1 - Rakow, Thomas C. A1 - Faeskorn-Woyke, Heide A1 - Saatz, Inga Marina A1 - Knolle, Harm ED - Reuss, Pascal ED - Eisenstadt, Viktor ED - Schönborn, Jakob ED - Schäfer, Jero T1 - OER Tools and Courses for Teaching Database Systems as Developed in the Project EILD.nrw T2 - LWDA’22: Lernen, Wissen, Daten, Analysen. October 05–07, 2022, Hildesheim, Germany N2 - In the EILD.nrw project, Open Educational Resources (OER) are being developed for teaching databases. Instructors can use the tools and courses in a variety of learning scenarios. Students of computer science and application subjects learn the complete life cycle of databases. For this purpose, quizzes, interactive tools, instructional videos, and courses for learning management systems are developed and published under a Creative Commons license. KW - Database systems KW - OER KW - higher education Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40622 UR - https://ceur-ws.org/Vol-3341/DB-LWDA_2022_CRC_1804.pdf SN - 1613-0073 VL - CEUR Workshop Proceedings: 3341 CY - Aachen ER - TY - THES A1 - Radtke, Linn T1 - Power and Intersectionality Matters! Gender Training in Development T3 - Hervorragende Abschlussarbeiten im Fachbereich Sozial- und Kulturwissenschaften - 111 KW - Master KW - WiSe21/22 KW - Gender KW - Intersectionality KW - Power Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-37462 CY - Düsseldorf ER - TY - JOUR A1 - Priesmann, Jan A1 - Münch, Jonas A1 - Tillmanns, Marius A1 - Ridha, E. A1 - Spiegel, T. A1 - Reich, Marius A1 - Adam, Mario A1 - Nolting, L. A1 - Praktiknjo, Aaron T1 - Artificial intelligence and design of experiments for resource adequacy assessment in power systems JF - Energy Strategy Reviews KW - KiVi KW - Design of experiments KW - Resource adequacy KW - Security of supply KW - Artificial intelligence Y1 - 2024 U6 - https://doi.org/10.1016/j.esr.2024.101368 SN - 2211-467X VL - 53 PB - Elsevier ER - TY - JOUR A1 - Preciado López, Magdalena A1 - Huber, Florian A1 - Grigoriev, Ilya A1 - Steinmetz, Michel O. A1 - Akhmanova, Anna A1 - Koenderink, Gijsje H. A1 - Dogterom, Marileen T1 - Actin-microtubule coordination at growing microtubule ends JF - Nature Communications N2 - To power dynamic processes in cells, the actin and microtubule cytoskeletons organize into complex structures. Although it is known that cytoskeletal coordination is vital for cell function, the mechanisms by which cross-linking proteins coordinate actin and microtubule activities remain poorly understood. In particular, it is unknown how the distinct mechanical properties of different actin architectures modulate the outcome of actin-microtubule interactions. To address this question, we engineered the protein TipAct, which links growing microtubule ends via end-binding proteins to actin filaments. We show that growing microtubules can be captured and guided by stiff actin bundles, leading to global actin-microtubule alignment. Conversely, growing microtubule ends can transport, stretch and bundle individual actin filaments, thereby globally defining actin filament organization. Our results provide a physical basis to understand actin-microtubule cross-talk, and reveal that a simple cross-linker can enable a mechanical feedback between actin and microtubule organization that is relevant to diverse biological contexts. KW - DOAJ Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-34878 SN - 2041-1723 VL - 5 PB - Springer Nature ER - TY - JOUR A1 - Pfeiffelmann, Björn A1 - Özman, Cansu A1 - Benim, Ali Cemal A1 - Joos, Franz T1 - Variable temperature effects on TEG performance JF - E3S Web of Conferences KW - DOAJ Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27893 SN - 2267-1242 VL - 128 PB - edp sciences ER - TY - JOUR A1 - Pfeiffelmann, Björn A1 - Diederich, Michael A1 - Gül, Fethi A1 - Benim, Ali Cemal A1 - Heese, Markus A1 - Hamberger, Andreas T1 - Computational and Experimental Investigation of an Industrial Biomass Furnace JF - Chemical Engineering & Technology Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27747 SN - 1521-4125 VL - 43 IS - 8 SP - 1538 EP - 1546 PB - Wiley ER - TY - JOUR A1 - Pfeiffelmann, Björn A1 - Diederich, Michael A1 - Gül, Fethi A1 - Benim, Ali Cemal A1 - Hamberger, Andreas A1 - Heese, Markus T1 - Analysis of combustion, heat and fluid flow in a biomass furnace JF - E3S Web of Conferences KW - DOAJ Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27880 SN - 2267-1242 VL - 128 PB - edp sciences ER - TY - JOUR A1 - Pfeiffelmann, Björn A1 - Benim, Ali Cemal A1 - Joos, Franz T1 - Numerical analysis of liquid jet impingement cooling of a thermoelectric generator JF - MATEC Web of Conferences Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27988 SN - 2261-236X VL - 240 PB - edp sciences ER - TY - JOUR A1 - Pfeiffelmann, Björn A1 - Benim, Ali Cemal A1 - Joos, Franz T1 - Water-Cooled Thermoelectric Generators for Improved Net Output Power: A Review JF - Energies N2 - Thermoelectric generators (TEGs) have the ability to convert waste heat into electrical energy under unfavorable conditions and are becoming increasingly popular in academia, but have not yet achieved a broad commercial success, due to the still comparably low efficiency. To increase the efficiency and economic viability of TEGs, research is performed on the materials on one hand and on the system connection on the other. In the latter case, the net output power of the cooling system plays a key role. At first glance, passive cooling seems preferable to active cooling because it does not affect the net electrical output power. However, as shown in the present review, the active cooling is to be preferred for net output power. The situation is similar in air and water-cooling. Even though air-cooling is easier to set up, the water-cooling should be preferred to achieve higher net output power. It is shown that microchannel cooling has similar hydraulic performance to conventional cooling and inserts increase the net output power of TEG. As the review reveals that active water-cooling should be the method of choice to achieve high net output power, it also shows that a careful optimization is necessary to exploit the potential. KW - Energy Engineering and Power Technology KW - Renewable Energy, Sustainability and the Environment KW - Electrical and Electronic Engineering KW - Control and Optimization KW - DOAJ Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-37323 SN - 1996-1073 VL - 14 IS - 24 PB - MDPI ER - TY - JOUR A1 - Pfeiffelmann, Björn A1 - Benim, Ali Cemal T1 - Numerical study of the quenching of a laminar premixed hydrogen flame JF - MATEC Web of Conferences Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27976 SN - 2261-236X VL - 240 PB - edp sciences ER - TY - THES A1 - Obry, Yannick T1 - Music Streaming Adaption – Drivers of Behavioral Intention N2 - Music consumption and distribution has changed drastically in the last twenty years due to digitalization. Instead of buying music products, like CDs or even downloaded digital music files, today music is predominantly distributed via online music streaming. Therefore, it is mandatory for the music industry as well as researchers to determine which factors are affecting consumers intention to use music streaming services. This study aims to investigate drivers of Behavioral Intention (BI) to use a music streaming service. Particularly, aspects of social preferences in the context of music streaming will be explored. Therefore, a research model is created, based on the Value-based Adoption Model (VAM) (Kim et al., 2007) with an extension to take social factors into account. An online questionnaire with 102 participants was conducted to test the research model and the corresponding hypotheses. In order to evaluate reliable indications, some adjustments needed to be made resulting in a corrected research model. The final independent variables of the corrected model are Perceived Value (PV) (which is composed of Perceived Usefulness (PU) and Perceived Enjoyment (PE)), Perceived Ease of Use (PEU), Perceived Price Value (PPV), Facilitating Conditions (FC), Perceived Fairness (PF), Social Connectivity (SC), and Peer-Effects (PFX). The empirical results show that Perceived Value (PV), Perceived Price Value (PPV), and Perceived Fairness (PF) are determinants of consumers Behavioral Intention (BI) to use a music streaming service. KW - Bachelor KW - SoSe23 Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-41326 CY - Düsseldorf ER - TY - JOUR A1 - Nyssen Guillén, Viola Isabel A1 - Deckert, Carsten T1 - Cultural influence on innovativeness - links between “The Culture Map” and the “Global Innovation Index” JF - International Journal of Corporate Social Responsibility KW - culture KW - culture dimensions KW - Innovativeness KW - DOAJ Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-29121 SN - 2366-0074 VL - 6 IS - 1 PB - Springer Nature ER - TY - JOUR A1 - Nolting, Lars A1 - Spiegel, Thomas A1 - Reich, Marius A1 - Adam, Mario A1 - Praktiknjo, Aaron T1 - Can energy system modeling benefit from artificial neural networks? Application of two-stage metamodels to reduce computation of security of supply assessments JF - Computers & Industrial Engineering KW - KIVi Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-26979 SN - 0360-8352 VL - 142 PB - Elsevier ER - TY - JOUR A1 - Niemann, Jörg A1 - Pisla, Adrian T1 - Sustainable Potentials and Risks Assess in Automation and Robotization Using the Life Cycle Management Index Tool—LY-MIT JF - Sustainability KW - FLiX KW - DOAJ Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27966 SN - 2071-1050 VL - 10 IS - 12 PB - MDPI ER - 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 - THES A1 - Neuhaus, Annika T1 - Prokrastination, Stressempfinden und -bewältigung: Eine quantitative Analyse einer Onlinebefragung mit Studierenden T3 - Hervorragende Abschlussarbeiten im Fachbereich Sozial- und Kulturwissenschaften - 128 KW - Master KW - SoSe22 KW - Stressbewältigung KW - Stressempfinden KW - Prokrastination Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-38638 CY - Düsseldorf ER - TY - JOUR A1 - Müller, Patrick A1 - Brummel, Mattis A1 - Braun, Alexander T1 - Spatial recall index for machine learning algorithms JF - London Imaging Meeting N2 - We present a novel metric Spatial Recall Index to assess the performance of machine-learning (ML) algorithms for automotive applications, focusing on where in the image which performance occurs. Typical metrics like intersection-over-union (IoU), precisionrecallcurves or average precision (AP) quantify the performance over a whole database of images, neglecting spatial performance variations. But as the optics of camera systems are spatially variable over the field of view, the performance of ML-based algorithms is also a function of space, which we show in simulation: A realistic objective lens based on a Cooke-triplet that exhibits typical optical aberrations like astigmatism and chromatic aberration, all variable over field, is modeled. The model is then applied to a subset of the BDD100k dataset with spatially-varying kernels. We then quantify local changes in the performance of the pre-trained Mask R-CNN algorithm. Our examples demonstrate the spatial dependence of the performance of ML-based algorithms from the optical quality over field, highlighting the need to take the spatial dimension into account when training ML-based algorithms, especially when looking forward to autonomous driving applications. Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-35657 SN - 0-89208-346-6 VL - 2021 IS - 1 SP - 58 EP - 62 PB - Society for Imaging Science and Technology ER - TY - THES A1 - Mehlhorn, Nils T1 - Mobile Cross-Platform Development from a Progressive Perspective N2 - Progressive web applications (PWAs) seem to be the next big thing in the mobile landscape. These are web applications with “super-powers” which are meant to provide the kinds of user experiences previously only native mobile applications could. Therefore they are able to match native applications in their capabilities but still thrive on the reachability of the web. They achieve this by implementing certain characteristics which originate from innovative standards and sophisticated best practices. Conveniently, as it is the web, PWAs are working seamlessly cross-platform. One of the closest things to a PWA so far may be an application created with the NativeScript framework. Such an application is also developed with web technologies yet able to use any native interface directly. This is made possible by using a designated runtime for mediating between JavaScript and the mobile system. Eventually, NativeScript is able to offer a high degree nativity yet also of convenient abstraction during development. This paper is set out to deliver further insight into both approaches by contrasting them based on the characteristics of PWAs. For this purpose, these characteristics are elaborated and adjusted to be applicable to native mobile applications. Hence a reasonable basis for what to expect from a native application is derived. Then NativeScript is assessed on this basis by the means of transferable concepts and technologies as well as a prototypic mobile application. Finally, an informed discussion and conclusion is performed based on the results. The comprehensive characteristics of PWAs resolve previous shortcomings with well thought out concepts and new technologies. These are transferable to native mobile applications to a far extent and may also be put into practice with NativeScript. The framework’s approach may be very well called ingenious, however, in the long run it might fall short of the innovative concept of PWAs. Having said this, it is still able to serve as a practical measure for creating appealing user experiences for multiple systems with arguably little effort. Due to large overlap a transformation between the two application types is a realistic option. Either way, web technologies are far from what they used to be and it is exciting to see how the mobile and web landscape will evolve in the future. KW - NativeScript KW - Progressive Web Apps KW - Cross-Plattform Entwicklung KW - NativeScript KW - Progressive Web Apps KW - cross-platform development Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-11285 ER - TY - GEN A1 - Mehlhorn, Nils T1 - Modern Cross-Platform Development for Mobile Applications N2 - While developing for multiple platforms at once seems like a convenient solution, there are several challenges arising when trying to abstract the entire mobile development. This paper is meant to evaluate current cross-platform development for mobile applications. The background for its necessity, its conceptual approach and the problems to face when developing cross-platform were determined and explained in detail. Afterwards, certain solutions were evaluated against the former insights. Based on the results, an informed discussion and conclusion was performed. The mobile environment consist of only two big players by now, Android and iOS. These operating systems differ in architecture, design and consequently in the way applications are developed for each of them. Therefore, high demands are made towards cross-platform solutions. Tools which allow for the creation of applications for multiple platforms at once have to match native applications in regard to user experience and performance. At the same time they need to be able to optimize developments with the goal of being cost efficient. Apache Cordova, Xamarin and NativeScript were selected for evaluation in regard to their ability to meet these requirements. Cordova acts as the comparison group of cross-platform tools. It is the big player in the field and there are reasons for this. However, aspiring solutions with higher nativity and ambitious approaches are emerging. Xamarin and NativeScript deliver top quality results while offering loosely coupled developments. Therefore it is possible to develop high quality applications and still benefit from the advantages of platform-independent solutions. As a consequence mobile development is about to change in the foreseeable future. More sophisticated approaches may lead to a higher number of developments done cross-platform, and rightfully so. KW - cross-plattform KW - mobile KW - Entwicklung KW - cross-platform KW - mobile KW - development KW - M Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-11276 CY - Düsseldorf ER - TY - RPRT A1 - Marke, Ute T1 - Land of High Hopes N2 - We are living in the era of sophisticated, state-of-the-art technology, artificial intelligence, accelerating data sciences at ultimate speed and sheer unlimited possibilities. We are able to shoot unmanned rockets equipped with vehicles into the orbit. We can afford to spend fortunes on research and development. However, and that leaves me bloodcurdling and furious, we haven´t managed yet to settle at least some of the most pressing global humanitarian needs: access to food, water, electricity, education and healthcare. So how can we be proud of any achievements? What does make us proud anyway?! ... Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-17683 PB - Hochschule Düsseldorf CY - Düsseldorf ER - TY - JOUR A1 - Mandal, Dipak Kumar A1 - Biswas, Nirmalendu A1 - Manna, Nirmal K A1 - Benim, Ali Cemal T1 - Impact of chimney divergence and sloped absorber on energy efficacy of a solar chimney power plant (SCPP) JF - Ain Shams Engineering Journal N2 - A numerical study is carried out meticulously to scrutinize the impact of different shapes of chimneys like circular (outer dia, dc), convergent (outer dia, 0.5dc), divergent (outer dia, 1.5dc), sudden contraction (outer dia, 0.5dc), and sudden expansion (outer dia, 1.5dc) on the performance of an SCPP. Furthermore, the parametric impact with different chimney divergence angles (CDA, ϕ), and ground absorber slope angle (GSA, γ) on the SCPP performance is also scrutinized. Optimum divergence angle (ϕ=+0.75◦) enhances the power generation up to ~ 47% (76 kW) with a horizontal ground absorber surface. An increase or decrease in CDA lessens the power generation. With a sloped ground absorber angle γ=0.6◦, the gain in power generation is 60% (82 kW). The study of combination of ground sloped absorber (γ=0.6◦) and divergent chimney (ϕ=+0.75◦) shows enhancement of the power generation upto 80% (92 kW) more than the classical Manzaranes plant. KW - Solar chimney power plant (SCPP) KW - Chimney divergence angle KW - Sloped absorber surface KW - Power generation KW - Efficiency KW - Regression analysis KW - DEAL KW - HSD Publikationsfonds KW - DFG Publikationskosten Y1 - 2202 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-42410 SN - 2090-4495 N1 - Datenverfügbarkeitserklärung: Daten, die die Ergebnisse dieser wissenschaftlichen Publikation stützen, sind auf begründete Anfrage bei dem*der korrespondierenden Autor*in erhältlich. PB - Elsevier ER - TY - JOUR A1 - Mabrouk, Riheb A1 - Naji, Hassane A1 - Benim, Ali Cemal A1 - Dhahri, Hacen T1 - A State of the Art Review on Sensible and Latent Heat Thermal Energy Storage Processes in Porous Media: Mesoscopic Simulation JF - Applied Sciences KW - DOAJ Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40343 VL - 12 IS - 14 PB - MDPI ER - TY - JOUR A1 - Lepa, Steffen A1 - Steffens, Jochen A1 - Herzog, Martin A1 - Egermann, Hauke T1 - Popular Music as Entertainment Communication: How Perceived Semantic Expression Explains Liking of Previously Unknown Music JF - Media and Communication Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-23602 VL - 8 IS - 3 SP - 191 EP - 204 PB - Cogitatio ER - TY - JOUR A1 - Langmann, Reinhard A1 - Rojas-Peña, Leandro T1 - PLCs as Industry 4.0 Components in Laboratory Applications JF - International Journal of Online Engineering KW - DOAJ Y1 - 2016 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-28089 SN - 1861-2121 VL - 12 IS - 7 PB - iJOE ER - TY - JOUR A1 - Kampes, Céline Fabienne T1 - Tail or no Tail? Applicability of the Long Tail Theory to the German Online Media Market JF - Central European Journal of Communication N2 - The Long Tail theory serves as an explanation for market change triggered through evolving online market conditions. However, it is often referred to without empirical validation, or with inconsistent findings on its applicability. Therefore, this paper analyses the applicability of the Long Tail theory to German online media offerings as of 2014 and 2016, focusing on offerings that serve information purposes (information offerings). Based on a unique dataset of commercially oriented online media offerings (Longitudinal IntermediaPlus 2014–2016), an analysis for three Long Tail characteristics (variety increase, opposing concentration between hit and niche offerings and niche market share increase) is conducted. By additionally distinguishing between political and entertainment-oriented information offerings as boundaries of democratized online market conditions the analysis reveals that the Long Tail theory is not fully applicable to any market sample, and especially not to politically oriented offerings. KW - online information offerings KW - Long Tail theory KW - entertainment KW - politics KW - Germany Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40123 SN - 1899-5101 N1 - This research was supported by the Digital Society research program funded by the Ministry of Culture and Science of the German State of North Rhine-Westphalia. VL - 13 IS - 3 SP - 371 EP - 389 PB - University Press of Wroclaw ER - TY - JOUR A1 - Kampa, Miriam A1 - Finke, Johannes A1 - Stalder, Tobias A1 - Bucher, Leandra A1 - Klapperich, Holger A1 - Mertl, Fabian A1 - Zimmer, Christian A1 - Geiger, Christian A1 - Hassenzahl, Marc A1 - Klucken, Tim T1 - Facilitating relaxation and stress reduction in healthy participants through a virtual reality intervention: study protocol for a non-inferiority randomized controlled trial JF - Trials KW - MIREVI Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40118 SN - 1745-6215 N1 - Open Access funding enabled and organized by Projekt DEAL. This work is funded by the Bundesministerium für Bildung und Forschung (BMBF, Funding number: 16SV8068). The funding source was not involved in the study design; the collection, analysis, and interpretation of data; in the writing of the report; or the decision to submit the article for publication. (see SPIRIT item 4). VL - 23 PB - BMC ER - TY - JOUR A1 - Iqbal, Sohail A1 - Pfeiffelmann, Björn A1 - Benim, Ali Cemal A1 - Joos, Franz T1 - Numerical analysis of lifted hydrogen flame JF - MATEC Web of Conferences Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27950 SN - 2261-236X VL - 240 PB - edp sciences ER - TY - JOUR A1 - Huber, Florian A1 - Verhoeven, Stefan A1 - Meijer, Christiaan A1 - Spreeuw, Hanno A1 - Castilla, Efraín A1 - Geng, Cunliang A1 - van der Hooft, Justin J. J. A1 - Rogers, Simon A1 - Belloum, Adam A1 - Diblen, Faruk A1 - Spaaks, Jurriaan H. T1 - matchms - processing and similarity evaluation of mass spectrometry data JF - Journal of Open Source Software KW - DOAJ Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-34856 SN - 2475-9066 VL - 5 IS - 52 PB - Cold Spring Harbor Laboratory ER - TY - JOUR A1 - Huber, Florian A1 - van der Burg, Sven A1 - van der Hooft, Justin J. J. A1 - Ridder, Lars T1 - MS2DeepScore: a novel deep learning similarity measure to compare tandem mass spectra JF - Journal of Cheminformatics N2 - Mass spectrometry data is one of the key sources of information in many workflows in medicine and across the life sciences. Mass fragmentation spectra are generally considered to be characteristic signatures of the chemical compound they originate from, yet the chemical structure itself usually cannot be easily deduced from the spectrum. Often, spectral similarity measures are used as a proxy for structural similarity but this approach is strongly limited by a generally poor correlation between both metrics. Here, we propose MS2DeepScore: a novel Siamese neural network to predict the structural similarity between two chemical structures solely based on their MS/MS fragmentation spectra. Using a cleaned dataset of > 100,000 mass spectra of about 15,000 unique known compounds, we trained MS2DeepScore to predict structural similarity scores for spectrum pairs with high accuracy. In addition, sampling different model varieties through Monte-Carlo Dropout is used to further improve the predictions and assess the model's prediction uncertainty. On 3600 spectra of 500 unseen compounds, MS2DeepScore is able to identify highly-reliable structural matches and to predict Tanimoto scores for pairs of molecules based on their fragment spectra with a root mean squared error of about 0.15. Furthermore, the prediction uncertainty estimate can be used to select a subset of predictions with a root mean squared error of about 0.1. Furthermore, we demonstrate that MS2DeepScore outperforms classical spectral similarity measures in retrieving chemically related compound pairs from large mass spectral datasets, thereby illustrating its potential for spectral library matching. Finally, MS2DeepScore can also be used to create chemically meaningful mass spectral embeddings that could be used to cluster large numbers of spectra. Added to the recently introduced unsupervised Spec2Vec metric, we believe that machine learning-supported mass spectral similarity measures have great potential for a range of metabolomics data processing pipelines. KW - DOAJ Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-34847 UR - http://www.ncbi.nlm.nih.gov/pubmed/34715914 SN - 1758-2946 N1 - J.J.J.v.d.H. acknowledges funding from an ASDI eScience grant, ASDI.2017.030, from the Netherlands eScience Center. VL - 13 IS - 1 PB - Cold Spring Harbor Laboratory 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 - Huber, Florian A1 - Schnauß, Jörg A1 - Rönicke, S. A1 - Rauch, P. A1 - Müller, K. A1 - Fütterer, C. A1 - Käs, Josef T1 - Emergent complexity of the cytoskeleton: from single filaments to tissue JF - Advances in Physics N2 - Despite their overwhelming complexity, living cells display a high degree of internal mechanical and functional organization which can largely be attributed to the intracellular biopolymer scaffold, the cytoskeleton. Being a very complex system far from thermodynamic equilibrium, the cytoskeleton's ability to organize is at the same time challenging and fascinating. The extensive amounts of frequently interacting cellular building blocks and their inherent multifunctionality permits highly adaptive behavior and obstructs a purely reductionist approach. Nevertheless (and despite the field's relative novelty), the physics approach has already proved to be extremely successful in revealing very fundamental concepts of cytoskeleton organization and behavior. This review aims at introducing the physics of the cytoskeleton ranging from single biopolymer filaments to multicellular organisms. Throughout this wide range of phenomena, the focus is set on the intertwined nature of the different physical scales (levels of complexity) that give rise to numerous emergent properties by means of self-organization or self-assembly. Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-34812 UR - http://www.ncbi.nlm.nih.gov/pubmed/24748680 SN - 1460-6976 N1 - Acknowledgment: We thank Klaus Kroy, Dan Strehle, Tobias Kießling, Matti Gralka, Harald Herrmann, Denis Wirtz, and Michael Höckel for very helpful comments, discussions, and proof reading. We further like to thank Steve Pawlizak, Thomas Fuhs, Daniel Koch, BjöStuhrmann, and Franziska Wetzel for contributing data and additional illustrations. This work was supported by the graduate school “Building with Molecules and Nano-Objects” (BuildMoNa). VL - 62 IS - 1 SP - 1 EP - 112 PB - Taylor & Francis ER - TY - JOUR A1 - Huber, Florian A1 - Ridder, Lars A1 - Verhoeven, Stefan A1 - Spaaks, Jurriaan H. A1 - Diblen, Faruk A1 - Rogers, Simon A1 - van der Hooft, Justin J. J. T1 - Spec2Vec: Improved mass spectral similarity scoring through learning of structural relationships JF - PLOS Computational Biology N2 - Spectral similarity is used as a proxy for structural similarity in many tandem mass spectrometry (MS/MS) based metabolomics analyses such as library matching and molecular networking. Although weaknesses in the relationship between spectral similarity scores and the true structural similarities have been described, little development of alternative scores has been undertaken. Here, we introduce Spec2Vec, a novel spectral similarity score inspired by a natural language processing algorithm-Word2Vec. Spec2Vec learns fragmental relationships within a large set of spectral data to derive abstract spectral embeddings that can be used to assess spectral similarities. Using data derived from GNPS MS/MS libraries including spectra for nearly 13,000 unique molecules, we show how Spec2Vec scores correlate better with structural similarity than cosine-based scores. We demonstrate the advantages of Spec2Vec in library matching and molecular networking. Spec2Vec is computationally more scalable allowing structural analogue searches in large databases within seconds. Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-34687 UR - http://www.ncbi.nlm.nih.gov/pubmed/33591968 SN - 1553-7358 N1 - Data Availability Statement: The pre-processed, cleaned dataset with all positive ionization mode spectra can be downloaded from https://doi.org/10.5281/zenodo.3978118, the original raw data can be accessed from https://doi.org/10.5281/zenodo.3979010. Funding: J.J.J.v.d.H. acknowledges funding from an ASDI eScience grant, ASDI.2017.030, from the Netherlands eScience Center—NLeSC, www.esciencecenter.nl, The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. VL - 17 IS - 2 PB - Cold Spring Harbor Laboratory ER - TY - CHAP A1 - Herder, Jens A1 - Ladwig, Philipp A1 - Vermeegen, Kai A1 - Hergert, Dennis A1 - Busch, Florian A1 - Klever, Kevin A1 - Holthausen, Sebastian A1 - Ryskeldiev, Bektur T1 - Mixed Reality Experience - How to Use a Virtual (TV) Studio for Demonstration of Virtual Reality Applications T2 - GRAPP 2018 - 13th International Conference on Computer Graphics Theory and Applications N2 - The article discusses the question of “How to convey the experience in a virtual environment to third parties?” and explains the different technical implementations which can be used for live streaming and recording of a mixed reality experience. The real-world applications of our approach include education, entertainment, e- sports, tutorials, and cinematic trailers, which can benefit from our research by finding a suitable solution for their needs. We explain and outline our Mixed Reality systems as well as discuss the experience of recorded demonstrations of different VR applications, including the need for calibrated camera lens parameters based on realtime encoder values. KW - Virtual Reality KW - Mixed Reality KW - Augmented Virtuality KW - Virtual (TV) Studio KW - Camera Tracking KW - Lehre Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-15823 UR - http://vsvr.medien.hs-duesseldorf.de/publications/grapp2018-mr-openvr-abstract.html SN - 978-989-758-287-5 N1 - Zweitveröffentlichung - Originalpublikation liegt auf: http://www.scitepress.org/DigitalLibrary SP - 281 EP - 287 PB - INSTICC CY - Setubal - Portugal ER - TY - CHAP A1 - Herder, Jens A1 - Büntig, Fabian A1 - Daemen, Jeff A1 - Lang, Jaroslaw A1 - Lück, Florian A1 - Säger, Mitja A1 - Sörensen, Roluf A1 - Hermanni, Markus A1 - Vonolfen, Wolfgang T1 - Subtle Animations using Talent Tracking in a Virtual (TV) Studio T2 - 17th International Conference on Human and Computer N2 - Markerless talent tracking is widely used for interactions and animations within virtual environments. In a virtual (tv) studio talents could be overburden by interaction tasks because camera and text require extensive attention. We take a look into animations and inter- actions within a studio, which do not require any special attention or learning. We show the generation of an artificial shadow from a talent, which ease the keying process, where separation of real shadows from the background is a difficult task. We also demonstrate animations of footsteps and dust. Furthermore, capturing talents’ height can also be used to adjust the parameters of elements in the virtual environment, like the position and scaling of a virtual display. In addition to the talents, a rigid body was tracked as placeholder for graphics, easing the interaction tasks for a talent. Two test productions show the possibilities, which subtle animations offer. In the second production, the rendering was improved (shadows, filtering, normal maps, ...) and instead of using the rigid body to move an object (a flag), the animation was only controlled by the hand’s position. KW - talent tracking KW - virtual studios KW - realtime animations KW - FHD KW - Virtual (TV) Studio Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-16009 UR - http://vsvr.medien.hs-duesseldorf.de/publications/hc2014-subtle-animations-abstract.html CY - Hamamatsu/Aizu-Wakamatsu/Duesseldorf ER - TY - CHAP A1 - Herder, Jens T1 - Cooperative Tools for Teaching : an Impact of a Network Environment T2 - Annual Report of the Information Systems and Technology Center, University of Aizu, October 1997 N2 - Education at the University of Aizu is focussed upon computer science. Besides being the subject matter of many courses, however, the computer also plays a vital role in the educational process itself, both in the distribution of instructional media, and in providing students with valuable practical experience. All students have unlimited access (24-hours-a-day) to individual networked workstations, most of which are multimedia-capable (even video capture is possible in two exercise rooms). Without software and content tailored for computer-aided instruction, the hardware becomes an expensive decoration. In any case, there is a need to better educate the instructors and students in the use of the equipment. In the interest of facilitating effective, collaborative use of network-based computers in teaching, this article explores the impact that a network environment can have on such activities. First, as a general overview, and to examine the motivation for the use of a network environment in teaching, this article reviews a range of different styles of collaboration. Then the article shows what kind of tools are available for use, within the context of what has come to be called Computer-Supported Cooperative Work (CSCW). KW - CAI KW - CAT KW - computer education KW - collaborative work KW - CSCW KW - groupware KW - FHD Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-827 SP - 3 EP - 8 CY - Aizu ER - TY - CHAP A1 - Herder, Jens T1 - Sound Spatialization Framework: An Audio Toolkit for Virtual Environments T2 - First International Conference on Human and Computer, Aizu-Wakamatsu, September 1998 N2 - The Sound Spatialization Framework is a C++ toolkit and development environment for providing advanced sound spatialization for virtual reality and multimedia applications. The Sound Spatialization Framework provides many powerful display and user-interface features not found in other sound spatialization software packages. It provides facilities that go beyond simple sound source spatialization: visualization and editing of the soundscape, multiple sinks, clustering of sound sources, monitoring and controlling resource management, support for various spatialization backends, and classes for MIDI animation and handling. KW - sound spatialization KW - resource management KW - virtual environments KW - spatial sound authoring KW - user interface design KW - human-machine interfaces Y1 - 1998 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-788 CY - Aizu ER - TY - JOUR A1 - Haberfehlner, Helga A1 - van de Ven, Shankara S. A1 - van der Burg, Sven A. A1 - Huber, Florian A1 - Georgievska, Sonja A1 - Aleo, Ignazio A1 - Harlaar, Jaap A1 - Bonouvrié, Laura A. A1 - van der Krogt, Marjolein M. A1 - Buizer, Annemieke I. T1 - Towards automated video-based assessment of dystonia in dyskinetic cerebral palsy: A novel approach using markerless motion tracking and machine learning JF - Frontiers in Robotics and AI Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40592 SN - 2296-9144 VL - 10 PB - Frontiers ER - TY - RPRT A1 - Greil, Stefan A1 - Schwarz, Christian A1 - Stein, Stefan ED - Kalmring, Dirk T1 - Perceived Fairness in the Taxation of a Digital Business Model T1 - Fairness und die Besteuerung digitaler Geschäftsmodelle N2 - The “fair” taxation of digital business models is challenging. One of the key aspects – both policy makers and the public opinion consider as most pressuring – is the determination of intragroup transfer prices for intangibles used in digital business models. In this paper, we address the issue of a “perceived fair” taxation of the digital economy in the light of the arm’s length principle based on a survey with transfer pricing experts. The aim of the survey is not to estimate arm’s length profit allocations but rather to elicit fairness considerations in different transfer pricing related scenarios. In a digital economy framework where arm’s length profits are distributed extremely inequitably, subjects perceive this distribution of profits as most unfair compared to more balanced scenarios. Consequently, subjects propose a “fair” distribution of profits that substantially differs from the exogenously given arm’s length allocation. In scenarios with a more balanced arm’s length allocation of profits, we find that the perceived fairness for the expert groups increases while a control group of business students is almost not influenced by the arm’s length allocation of profits. N2 - Die „faire“ Besteuerung digitaler Geschäftsmodelle ist herausfordernd. Einer der Schlüsselaspekte ist dabei die Ermittlung konzerninterner fremdvergleichskonformer Verrechnungspreise für immaterielle Vermögenswerte, die verstärkt in digitalen Geschäftsmodellen genutzt werden. Dieser Beitrag beschäftigt sich mit der „wahrgenommenen“ Fairness bei der Besteuerung digitaler Geschäftsmodelle vor dem Hintergrund des Fremdvergleichsgrundsatz. Grundlage hierfür ist eine Umfrage unter Verrechnungspreis-Experten (Finanzbeamte und Steuerberater). Wir finden, dass wenn der Fremdvergleichsgrundsatz zu einer sehr ungleichen Verteilung des Steuersubstrats führt, die Teilnehmer diese Gewinnverteilung im Vergleich zu ausgewogeneren Szenarien als unfair erachten. Dementsprechend zeigen unsere Ergebnisse, dass zwar der Fremdvergleichsgrundsatz als Referenzpunkt für Fairness Überlegungen dient. In Bezug auf die individuell vorgeschlagene faire Gewinnverteilung können aber erhebliche Unterschiede zur fremdvergleichskonformen Gewinnverteilung bestehen. T3 - Forschungsberichte des Fachbereichs Wirtschaftswissenschaften der Hochschule Düsseldorf - 47 KW - corporate income tax KW - profit-shifting KW - arm's length principle KW - fairness KW - Unternehmensbesteuerung KW - Gewinnverlagerung KW - Fremdvergleichsgrundsatz KW - digitale Geschäftsmodelle Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-15759 SN - 2365-3361 CY - Düsseldorf ER - TY - RPRT A1 - Greil, Stefan A1 - Schwarz, Christian A1 - Stein, Stefan T1 - Fairness and the Arm's Length Principle in a Digital Economy T1 - Fairness und der Fremdvergleichsgrundsatz in der digitalen Ökonomie N2 - The OECD Base Erosion Profit Shifting (BEPS) Initiative as well as the current fairness oriented public discussion regarding the taxation of digital business models highlight the importance and complexity of the arm's length principle. In a theoretical model of an internationally fragmented digital good's production process, we show that fairness considerations of tax authorities (namely inequity aversion) can result in a falling apart between a perceived "fair" and arm's length distribution of profits across tax jurisdictions. Our model predicts that a multinational firm follows the fundamental paradigm of international taxation, i.e. the arm's length principle, to properly incentivize internal agents involved in the production of a digital good. However, with inequity averse tax authorities, we find that tax authorities "prefer" a more equal distribution of profits compared to the arm's length allocation. From a multinational firm's perspective, inequity aversion among tax authorities dampens the strategic effect to - in accordance with arm's length principle - shift profits to low tax countries. N2 - Die OECD Base Erosion Profit Shifting (BEPS) Initiative sowie die aktuelle Fairness orientierte öffentliche Diskussion zur Besteuerung digitaler Geschäftsmodelle verdeutlichen die Bedeutung und Komplexität des Fremdvergleichsgrundsatzes. Wir modellieren einen international fragmentierten Produktionsprozess eines digitalen Gutes und zeigen wie Fairness-Erwägungen von Steuerbehörden (d.h. Ungleichheitsaversion) dazu führen kann, dass die als "fair" wahrgenommene und die zum Fremdvergleichsgrundsatz konforme Gewinnverteilung innerhalb der Steuerjurisdiktionen auseinander fällt. Unser Modell sagt voraus, dass eines multinationales Unternehmen dem fundamentalen Paradigma der internationalen Besteuerung, d.h. dem Fremdvergleichsgrundsatz folgt, um firmenintern effiziente Anreize zur Produktion des digitalen Gutes zu setzen. Ungleichheitsaversion auf Seiten der Steuerbehörden führt allerdings dazu, dass die Steuerbehörden eine gleichmäßigere Verteilung der Gewinne im Vergleich zum Fremdvergleichsgrundsatz bevorzugen. Aus Sicht eines multinationalen Unternehmens dämpft die Ungleichheitsaversion der Steuerbehörden den strategischen Anreiz Gewinne in Niedrigsteuerländer zu verlagern. T3 - Forschungsberichte des Fachbereichs Wirtschaftswissenschaften der Hochschule Düsseldorf - 42 KW - Unternehmensbesteuerung KW - Gewinnverlagerung KW - Fremdvergleichsgrundsatz KW - Fairness KW - corporate income tax KW - profit-shifting KW - arms length principle KW - fairness Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-12029 SN - 2365-3361 IS - 42 CY - Düsseldorf ER - TY - JOUR A1 - Glembin, Jens A1 - Adam, Mario A1 - Deidert, Jörn A1 - Jagnow, Kati A1 - Rockendorf, Gunter A1 - Wirth, Hans Peter T1 - Simulation and Evaluation of Different Boiler Implementations and Configurations in Solar Thermal Combi Systems JF - Energy Procedia KW - Kessel und große Solarthermieanlagen Y1 - 2012 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27350 N1 - Acknowledgements The work presented in this paper has been realized within the project “Integration von Heizkesseln in Wärmeverbundsysteme mit großen Solaranlagen“ (Integration of heating boilers in thermal energy distribution circuits with large solar systems), which has been funded by the German Ministry for Environment, Nature Conservation and Nu-clear Safety based on a decision of the German Federal Parliament (FKZ 0325958Z). Within the project, the authors developed a new boiler model for dynamic simulations and validated it against test rig and field data. Field measurements and additional system simulations have been used to analyze and evaluate the interaction of the solar thermal system and the boiler. The authors are grateful for the project support. The content of this publication is in the responsibility of the authors. VL - 30 SP - 601 EP - 610 PB - Elsevier ER - TY - JOUR A1 - Girod, Kai A1 - Lohmann, Heiko A1 - Schlüter, Stefan A1 - Kaluza, Stefan T1 - Methanol Synthesis with Steel-Mill Gases: Simulation and Practical Testing of Selected Gas Utilization Scenarios JF - Processes Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-26928 VL - 8 IS - 12 PB - MDPI ER - TY - JOUR A1 - Girod, Kai A1 - Lohmann, Heiko A1 - Kaluza, Stefan T1 - Methanol Synthesis with Steel Mill Gases: Performance Investigations in an On‐Site Technical Center JF - Chemie Ingenieur Technik KW - DEAL Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-34409 SN - 1522-2640 N1 - he investigations within the scope of the project Carbon2Chem® are funded by the German Federal Ministry of Education and Research (BMBF; support code: 03EK3039F). We also thank our project partners in the Carbon2Chem subproject L2 (methanol synthesis) for the trustful cooperation. Open access funding enabled and organized by Projekt DEAL. VL - 93 IS - 5 SP - 850 EP - 855 PB - Wiley ER - TY - JOUR A1 - Fomin, Alexey A1 - Petelin, Daniil A1 - Jahr, Andreas T1 - Synthesis and Analysis of a Novel Linkage Mechanism with the Helical Motion of the End-Effector JF - Robotics Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27736 SN - 2218-6581 N1 - Supplementary Material ist verfügbar: https://www.mdpi.com/2218-6581/9/3/53/s1 (Zip mit mov-Datei) VL - 9 IS - 3 SP - 1 EP - 15 PB - MDPI ER - TY - JOUR A1 - Fomin, A. A1 - Dvornikov, L. A1 - Paramonov, M. A1 - Jahr, Andreas T1 - To the theory of mechanisms subfamilies JF - IOP Conference Series: Materials Science and Engineering Y1 - 2016 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-28062 VL - 124 PB - IOP Publishing ER - TY - CHAP A1 - Fatemi, Armin A1 - Tischbein, Franziska A1 - Wirtz, Frank A1 - Schmoger, Christin A1 - Dorendorf, Stefan A1 - Schurtz, Annika A1 - Echternacht, David A1 - Ulbig, Andreas T1 - On the Impact of Smartification Strategies for the State Estimation of Low Voltage Grids T2 - 13th "Internationale Energiewirtschaftstagung" (IEWT2023), February 15-17, 2023, Vienna, Austria N2 - The decarbonization of for example the energy or heat sector leads to the transformation of distribution grids. The expansion of decentralized energy resources and the integration of new consumers due to sector coupling (e.g. heat pumps or electric vehicles) into low voltage grids increases the need for grid expansion and usage of flexibilities in the grid. A high observability of the current grid status is needed to perform these tasks efficiently and effectively. Therefore, there is a need to increase the observability of low voltage grids by installing measurement technologies (e.g. smart meters). Multiple different measurement technologies are available for low voltage grids which can vary in their benefit to observation quality and their installation costs. Therefore, Bayernwerk Netz GmbH and E.DIS AG in cooperation with E-Bridge Consulting GmbH and the Institute for High Voltage Equipment and Grids, Digitalization and Energy Economics (IAEW) investigated the effectiveness of different strategies for the smartification of low voltage grids. This paper presents the methodology used for the investigation and exemplary results focusing on the impact of intelligent cable distribution cabinets and smart meters on the quality of the state estimation. KW - State Estimation KW - Smart Meter KW - Grid Observability KW - Measurement Technologies Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-41282 SP - 1 EP - 15 CY - Wien ER - TY - JOUR A1 - Falling, Luisa A1 - Kaluza, Stefan A1 - Strucks, Peter T1 - A Short Review on Ni-Catalyzed Methanation of CO²: Reaction Mechanism, Catalyst Deactivation, Dynamic Operation JF - Chemie Ingenieur Technik N2 - Today, the use of renewable energies and recycling of climate-changing gases are increasingly important. In this context,coupling of methanation with small, decentralized CO2sources such as biogas plants provides one possibility. However,fluctuating availability of renewables for hydrogen production in combination with small storage volumes result in anenhanced demand for dynamic process operation. This leads to new research challenges with respect to the required cata-lysts and the overall process design. To draw reliable conclusions about the catalytic performance under dynamic processoperation, the mechanism of the methanation reaction as well as typical deactivation procedures of the catalyst appliedunder steady-state conditions have to be reviewed thoroughly. KW - Power-to-gas KW - Ni catalysts KW - Dynamic operation KW - Deactivation KW - CO2Methanation Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-32134 SN - 1522-2640 VL - 93 SP - 1526 EP - 1536 PB - Wiley ER - TY - JOUR A1 - Failing, Luisa A1 - Kaluza, Stefan A1 - Strucks, Peter T1 - Catalytic CO2 methanation: Providing optimal test conditions for kinetic investigations JF - Chemie Ingenieur Technik N2 - In the context of using renewable energies and recycling climate-changing gases, methanation of CO2 provides one possibility. However, volatile availability of renewable energies for hydrogen production and fluctuating CO2streams from different sources lead to enhanced demand in investigating the influence of dynamic process operation on the catalyst performance, including detailed kinetic characterization. Reliable kinetic measurements require isothermal temperature control and absence of macrokinetic diffusion limitations. Both were investigated in this work while the determination of steady-state kinetic parameters is part of ongoing studies. Furthermore, a detailed analysis with respect to the long-term-stability of the nickel-based catalyst was performed KW - CO2 methanation KW - Kinetics KW - Long-term stability KW - Ni catalyst KW - Power-to-Gas Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40026 SN - 1522-2640 VL - 95 IS - 5 SP - 749 EP - 753 PB - Wiley ER - TY - RPRT A1 - Deckert, Carsten A1 - Schomaker, Rahel M. A1 - Knappitsch, Eithne T1 - Culture and Entrepreneurship: The Political, Social and Individual Influences on Opportunity Entrepreneurs N2 - The impact of culture on entrepreneurship is a widely accepted phenomenon. Cultural factors influence entrepreneurship via different mechanisms on the macro-, meso-, and micro-level of a country. Building on existing research, we draw a clear link between national cultural dimensions and entrepreneurship, using a new model that arranges different cultural dimensions in groups based on their particular function: political, social, or individual (PSI-model) and that distinguishes between values and practices where relevant. The PSI-model provides a coherent theoretical framework on which different cultural dimensions and their impact on entrepreneurship can be analysed, allowing for particular attention to be drawn to social practices and social values. This paper contributes to a better understanding of the relationship between culture and entrepreneurship, providing empirical evidence of how specific cultural dimensions influence entrepreneurship. The findings are of relevance from a policy perspective and can be used to generate practical recommendations for national institutions interested in promoting entrepreneurship and entrepreneurial activities. The findings are also transferable to other fields related to national cultural dimensions such as level of innovation, investment, budgeting etc. T3 - Working Papers in Industrial Engineering - 3 KW - Entrepreneurship KW - Cultural Dimensions KW - National Culture KW - PSI Model Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-23837 SN - 2627-8375 PB - Hochschule Düsseldorf CY - Düsseldorf ER - TY - JOUR A1 - Deckert, Carsten A1 - Schomaker, Rahel M. T1 - Cultural tightness–looseness and national innovativeness: impacts of tolerance and diversity of opinion JF - Journal of Innovation and Entrepreneurship N2 - The links between innovativeness as a driver of economic performance, and the determinants of innovativeness have been investigated by management scholars and economists for decades, focusing mostly on “hard factors” as investment in research and development, or education. Focusing on a relatively neglected, but in times of globalization even more important aspect, the infuence of cultural characteristics on innovativeness, we apply diferent econometric models to test for links between cultural tightness and looseness on the one hand, and national innovativeness on the other hand. We fnd that cultural tightness—in the sense of homogenous and intolerant societies—has a negative link to national innovativeness, while cultural looseness—in the sense of tolerant and diverse societies—displays a positive link to national innovativeness. KW - DOAJ KW - DEAL KW - Innovation KW - Kultur KW - Toleranz KW - Diversity of opinion Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-36515 SN - 2192-5372 VL - 11 SP - 1 EP - 19 PB - Springer Nature ER - TY - GEN A1 - Deckert, Carsten A1 - Phan Ngoc, Duc Anh T1 - PlayStation 4 vs. Xbox One: Competitive Analysis of the Video Game Industry T3 - Business Cases in Industrial Engineering - 3 KW - Business Case KW - Strategy KW - Delta Model KW - Video Game Industry Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-41142 CY - Düsseldorf 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 - RPRT A1 - Deckert, Carsten ED - Niemann, Jörg ED - Deckert, Carsten T1 - Tensions in Team Creativity: Using the Value Square to Model Team Climate for Creativity N2 - This paper explores the tensions in team creativity. The tensions in team creativity are based on a tension between originality and effectiveness in the standard definition of creativity. To display the tensions in team creativity, the value square (“Wertequadrat”) developed by Schulz von Thun (1998) is used which balances a value with its countervalue. The author identifies tensions for cohesion, consensus and conformity. Cohesion is described as a tension between team diversity and team safety, consensus as a tension between constructive controversy and participatory decision-making and conformity as a tension between support for innovation and task orientation. Finally, the connection of individual and team creativity is described as an interplay between solitary and interactive components. T3 - Working Papers in Industrial Engineering - 1 KW - Innovation KW - Creativity KW - Team Climate Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-16763 SN - 2627-8375 CY - Düsseldorf ER - TY - CHAP A1 - Deckert, Carsten T1 - Why Some Ideas Refuse to Diffuse BT - 8th Annual Conference Front End of Innovation (FEI EMEA), Munich N2 - There is a popular saying in German: Innovation is when the market shouts “Hooray!”. Thus, a new idea is only as good as its diffusion into the addressed social system. The question is what affects the adoption or rejection of a new idea. Carsten Deckert shares his experience on the main innovation resistances and on ways to increase the acceptance of new ideas. He talks about which perceived attributes of innovations are conducive to the rate of adoption of an innovation and which are characteristics of failed innovations. Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-18193 PB - KNect 365 CY - München ER - TY - RPRT A1 - Deckert, Carsten T1 - Tensions in Creativity - Using the Value Square to Model Individual Creativity T2 - CBD Working Paper Series N2 - The definition of individual creativity is based on a tension between novelty on the one side and usefulness respectively appropriateness on the other side. The paper explores how this tension pervades the stage and componential theories of creativity. To achieve this, the so called value square (“Wertequadrat”) developed by Helwig (1967) and Schulz von Thun (1998)is used which balances a value with its countervalue to analyze creativity. The author identifies tensions of action and inaction, expertise and mindfulness, precision and ambiguity as well as immersion and detachment permeating the creative process and the components of creativity. As a conclusion a morphological box for creativity is presented which allows one to show which combination of characteristics of the tensions support different stages of creativity. Furthermore implications for development and time management are discussed. Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-18209 UR - https://www.researchgate.net/publication/282875608_Tensions_in_Creativity_-_Using_the_Value_Square_to_Model_Individual_Creativity VL - 2 PB - Cologne Business School CY - Köln ER - TY - RPRT A1 - Deckert, Carsten T1 - Tensions in Creative Products - Using the Value Square to Model Functional Creativity T2 - CBS Working Paper Series Y1 - 2016 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-18078 UR - https://www.researchgate.net/publication/305900610_Tensions_in_Creative_Products_-_Using_the_Value_Square_to_Model_Functional_Creativity VL - 4 PB - Cologne Business School CY - Köln ER - TY - CHAP A1 - Deckert, Carsten T1 - Tensions in Corporate Creativity T2 - Book of Papers N2 - The standard definition of creativity is based on a tension between originality and effectiveness. Borrowing from the wave-particle duality in physics one could say that there is an originality-effectiveness duality at work for creativity. The paper explores how this tension pervades Amabile's (1997) componential theory of organizational creativity with the components organizational motivation, management practices (including work assignment and work control) and resources. As a method the so called value square (" Wertequadrat ") developed by Helwig (1967) and Schulz von Thun (1998) is used which balances a value with its countervalue. The author identifies a tension of corporate tradition and corporate change for organizational motivation, a tension of skills and challenges for work assignment, a tension of management by control and management by loss of control for work control as well as a tension of organizational efficiency and organizational slack for resources. Additionally different implications of these tensions for the resistance of a company to creativity, for an organizational climate conducive to creativity as well as for resource allocation in creative endeavours are discussed. KW - Components of Creativity KW - Corporate Creativity KW - Organizational Creativity Y1 - 2016 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-18065 UR - https://www.researchgate.net/publication/313010955_TENSIONS_IN_CORPORATE_CREATIVITY SP - 79 EP - 86 ER - TY - RPRT A1 - Deckert, Carsten T1 - Creative Heuristics: A Framework for Systematic Creative Problem Solving T2 - CBS Working Paper Series Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-17982 UR - https://www.researchgate.net/publication/318700662_Creative_Heuristics_A_Framework_for_Systematic_Creative_Problem_Solving VL - 1 PB - Cologne Business School CY - Köln ER - TY - GEN A1 - Deckert, Carsten T1 - Now What You Hear Is Not a Test: The Invention and Commercialization of Rap Music T3 - Business Cases in Industrial Engineering - 2 KW - Business Case KW - Musikindustrie KW - Entrepreneurship KW - Innovation Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-41134 CY - Düsseldorf ER - TY - JOUR A1 - Das, Sampad Gobinda A1 - Bhattacharyya, Suvanjan A1 - Chattopadhyay, Himadri A1 - Benim, Ali Cemal T1 - Transport Phenomenon of Simultaneously Developing Flow and Heat Transfer in Twisted Sinusoidal Wavy Microchannel under Pulsating Inlet Flow Condition JF - Heat Transfer Engineering Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27697 SP - 1 EP - 14 PB - Taylor & Francis ER - TY - RPRT A1 - Christianson, Kiel A1 - Herder, Jens T1 - Mini-lectures in Computer Science on the WWW N2 - The task of the Center for Language Research is to provide content-based English language instruction for students of computer science and engineering. As such, we find ourselves at the confluence of many of the streams currently running through the English Language Teaching profession, including English for Science and Technology (EST), English for Academic Purposes (EAP), English for Specific Purposes (ESP), Computer-assisted language learning (CALL), content-based instruction, and multimedia applications in foreign language pedagogy. This paper describes our initial attempts to construct a number of World Wide Web pages where students will be able to study EST, EAP, and computer science topics on their own in a multimedia environment. KW - English as a foreign language KW - teaching KW - web and video supported learning KW - Lehre Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-854 CY - Aizu ER - TY - THES A1 - Buckley, Andrea T1 - Medical social work in Ireland and Germany : a comparison of a personal social service in two different welfare states N2 - Diese Masterarbeit wurde als Abschlußarbeit für den Studiengang Master of European Social Policy Analysis an der National University of Ireland Maynooth eingereicht . Der Titel lautet : Soziale Arbeit im Krankenhaus in Irland und Deutschland: ein Vergleich einer personenbezogenen sozialen Dienstleistung in zwei verschiedenen Wohlfahrtsstaaten. Sie beschreibt und analysiert den Kontext bzw. die Rahmenbedingungen, in dem Soziale Arbeit im Krankenhaus (Sozialdienst im Krankenhaus) stattfindet. Hier wird der Bezug zwischen gesellschaftlichem Kontext als Ganzem, dem Gesundheitssystem im allgemeinen (Makroebene) und den Rahmenbedingungen im Krankenhaus (Mesoebene) besonderes Augenmerk gewidmet. Die Idee dieser Arbeit ist, einen kurzen historischen Überblick über die Entwicklung der Krankenhaussozialarbeit (Mikroebene) in beiden Ländern zu geben, sowie Hintergrundinformationen darüber, was Soziale Arbeit / Sozialdienst im Krankenhaus beinhaltet. Der untersuchte Zeitraum reicht von 1980 bis heute. Die Hauptuntersuchungsfragen lauten: Welche Interdependenzen gibt es zwischen Makro-, Meso- und Mikroebene? Haben Veränderungen im Gesundheitssystem bzw. der Gesundheitspolitik im Allgemeinen und hinsichtlich der Krankenhäuser im Besonderen die Arbeit im Krankenhaussozialdienst beeinflusst und wenn ja, wie? Welche Gemeinsamkeiten und Unterschiede gibt es in diesem Kontext in den beiden untersuchten Ländern? N2 - This dissertation, written for the course Master of European Social Policy Analysis – National University of Ireland Maynooth - , shows the context or so-called framework within which the medical social work service in two different welfare states: Ireland and Germany operates. This means the societal context as a whole, the health system in general (macro-level) and the hospital setting (mezzo-level) in particular. The idea of this publication is to give a short overview of the historic development of medical social work (micro-level) in Ireland and Germany and some background information about what medical social work is. The time frame examined starts from the 1980s up to present. The main questions to be answered are: What are the interdependencies between the macro-, mezzo- and micro-level? Have changes in the health system in general and the hospitals in particular influenced medical social work and if so how? What are the similarities and differences in the two countries? KW - Krankenhaus KW - Irland KW - Deutschland KW - Ländervergleich KW - komparative Sozialforschung KW - medical social work KW - Ireland KW - Germany KW - comparative research KW - hospitals KW - FHD Y1 - 1998 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-3292 ER - TY - JOUR A1 - Brummel, Mattis A1 - Müller, Patrick A1 - Braun, Alexander T1 - Spatial precision and recall indices to assess the performance of instance segmentation algorithms JF - Electronic Imaging KW - Space-Variance KW - Computer Vision KW - IoU KW - image perturbations Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-41552 SN - 2470-1173 VL - 34 IS - 16 SP - 1 EP - 6 PB - Society for Imaging Science and Technology ER - TY - THES A1 - Brummel, Mattis T1 - Performance evaluation of state-of-the-art computer vision systems in the field of autonomous driving in dependency of optical parameters KW - Master KW - SoSe21 Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-37508 CY - Düsseldorf ER - TY - CHAP A1 - Brettschneider, Nico A1 - Herder, Jens A1 - de Mooij, Jeroen A1 - Ryskeldiev, Bektur ED - Herder, Jens T1 - Audio vs. Visual Avatars as Guides in Virtual Environments T2 - 21th International Conference on Human and Computer, HC-2018, March 27–28, 2019, Shizuoka University, Hamamatsu, Japan. N2 - Through constant technical progress, multi-user virtual reality is transforming towards a social activity that is no longer only used by remote users, but also in large-scale location-based experiences. We evaluate the usage of realtime-tracked avatars in co-located business-oriented applications in a "guide-user-scenario" in comparison to audio only instructions. The present study examined the effect of an avatar-guide on the user-related factors of Spatial Presence, Social Presence, User Experience and Task Load in order to propose design guidelines for co-located collaborative immersive virtual environments. Therefore, an application was developed and a user study with 40 participants was conducted in order to compare both guiding techniques of a realtime-tracked avatar guide and a non-visualised guide with otherwise constant conditions. Results reveal that the avatar-guide enhanced and stimulated communicative processes while facilitating interaction possibilities and creating a higher sense of mental immersion for users. Furthermore, the avatar-guide appeared to make the storyline more engaging and exciting while helping users adapt to the medium of virtual reality. Even though no assertion could be made concerning the Task Load factor, the avatar-guide achieved a higher subjective value on User Experience. Due to the results, avatars can be considered valuable social elements in the design of future co-located collaborative virtual environments. KW - Virtual Reality KW - Co-located Collaborations KW - Networked Immersive Virtual Environments KW - Head-mounted Display KW - Avatars KW - Lehre Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-23859 UR - https://vsvr.medien.hs-duesseldorf.de/publications/hc2018-avatar/ PB - Hochschule Düsseldorf CY - Düsseldorf ER - TY - JOUR A1 - Bordoloi, Ankur A1 - Sanchez, Miguel A1 - Noei, Heshmat A1 - Kaluza, Stefan A1 - Großmann, Dennis A1 - Wang, Yuemin A1 - Grünert, Wolfgang A1 - Muhler, Martin T1 - Catalytic Behaviour of Mesoporous Cobalt-Aluminum Oxides for CO Oxidation JF - Journal of Catalysts Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-34344 SN - 2314-5110 SP - 1 EP - 9 PB - Hindawi ER - TY - THES A1 - Blum, Jessica T1 - Queering Empowerment and Accountability - Towards a Decolonial Peacebuilding-Development Praxis Nexus T3 - Hervorragende Abschlussarbeiten im Fachbereich Sozial- und Kulturwissenschaften - 134 KW - Queer KW - Empowerment KW - Accountability KW - Decolonial KW - Peacebuilding-Development Nexus Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-38517 CY - Düsseldorf ER - TY - RPRT A1 - Bleuel, Hans-H. ED - Kalmring, Dirk T1 - The German banking system and the global financial crisis: causes, developments and policy responses N2 - Germany’s banking sector has been severely hit by the global financial crisis. In a German context as of February, 2009, this paper reviews briefly the structure of the banking industry, quantifies effects of the crisis on banks and surveys responses of economic policy. It is argued that policy design needs to enhance transparency and enforce the liability principle. In addition, economic policy should not eclipse principles of competition policy. N2 - Der deutsche Bankensektor ist durch die internationale Finanzkrise schwer getroffen. Auf Deutschland und die im Februar 2009 verfügbaren Informationen bezogen, werden die Struktur des Bankensektors kurz umrissen, die Effekte auf die Banken quantifiziert und wirtschaftspolitische Reaktionen aufgezeigt. Ziel der Wirtschaftspolitik ist es, die Transparenz zu erhöhen und das Haftungsprinzip durchzusetzen. Darüber hinaus sollten Grundsätze der Wettbewerbspolitik nicht in den Hintergrund geraten. T2 - The German banking system and the global financial crisis: causes, developments and policy responses T3 - Forschungsberichte des Fachbereichs Wirtschaftswissenschaften der Hochschule Düsseldorf - 8 KW - Bank KW - Bankenkrise KW - Finanzmarktkrise KW - Wirtschaftspolitik KW - Deutschland KW - bank KW - banking crisis KW - financial crisis KW - economic policy KW - Germany KW - FHD Y1 - 2009 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-5116 N1 - Erster / früherer Titel der Reihe: Forschungsberichte des Fachbereichs Wirtschaft der Fachhochschule Düsseldorf bis 2014 IS - 8 CY - Düsseldorf ER - TY - JOUR A1 - Biswas, Nirmalendu A1 - Mandal, Dipak Kumar A1 - Manna, Nirmal K. A1 - Benim, Ali Cemal T1 - Magneto-hydrothermal triple-convection in a W-shaped porous cavity containing oxytactic bacteria JF - scientific reports N2 - Bioconvective heat and mass transport phenomena have recently been the subject of interest in diverse fields of applications pertaining to the motion of fluids and their thermophysical properties. The transport processes in a system involving triple convective phenomena, irregular geometry, and boundary conditions constitute a complex phenomenon. This work aims to explore the mixed thermo-bioconvection of magnetically susceptible fluid containing copper nanoparticles and oxytactic bacteria in a novel W-shaped porous cavity. The buoyant convention is generated due to the isothermal heating at the wavy bottom wall, whereas the mixed convection is induced due to the shearing motion of the top-cooled sliding wall. Furthermore, the bioconvection is induced due to the manifestation of oxytactic bacteria or organisms. The inclined sidewalls are insulated. The geometry is packed with water based Cu nanoparticle mixed porous structure, which is subjected to a magnetizing field acted horizontally. The complex transport equations are transformed into nondimensional forms, which are then computed using the finite volume-based developed code. The coupled triple-convective flow physics are explored for a wide range of involved controlling parameters, which could provide helpful insight to the system designer for its proper operation. The shape of geometry can be considered one of the important parameters to control the heat and mass transport phenomena. In general, the influence of amplitude (δ) is more compared to the waviness number (m) of the undulations. The magnitude of heat (Nu) and mass (Sh) transfer rate for the W-shaped cavity is high compared to conventional square and trapezoidal-shaped cavities. The output of the analysis could be very helpful for the designer for modeling devices operating on nanotechnology-based bioconvection, microbial fuel cells, and others. KW - DOAJ Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40041 SN - 2045-2322 VL - 12 PB - Springer Nature ER - TY - JOUR A1 - Biedermann, Till M. A1 - Czeckay, Pasquale A1 - Hintzen, Nils A1 - Kameier, Frank A1 - Paschereit, C. O. T1 - Applicability of Aeroacoustic Scaling Laws of Leading Edge Serrations for Rotating Applications JF - acoustics KW - DOAJ KW - ISAVE Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40311 SN - 2624-599X VL - 2 IS - 3 SP - 579 EP - 594 PB - MDPI ER - TY - RPRT A1 - Bhaiya, Madhur A1 - Jahr, Andreas A1 - Happel, Holger T1 - Harvesting-Combine-Flow Simulation Technique N2 - CFX 11.0 is a Computational Fluid Dynamics (CFD) program for simulating the behavior of systems involving fluid flow, heat transfer, and other related physical processes. It works by solving the equations of fluid flow (in a special form) over a region of interest, with specified (known) conditions on the boundary of that region. This tool is used here to analyse the straw cutter which is used to comminute the straw which is left standing in the field after stripper header has stripped the grains from the crops. Stripper Header is a new technique different to conventional harvester machines and it is still under development and testing. It works on the principle in which grains are first stripped off from the head of the standing crop which helps in much reduced intake freeing up the separation systems to handle a larger volume of grains. But with this, the new problem of the disposal of the long, uncut straw left after stripping of grains arose. So a straw cutter is used after the stripper header stage in this Combine Harvester, where the rotor is equipped with pressed steel blades and rotates towards the crop, i.e., it cuts and lifts the straw over the top. This technique is environment friendly because previously farmers would have to burn the long, uncut straw standing in the fields while in this case mulched straw can be used for min-till systems. This rotor based straw cutting machine is analysed here which helps us in increasing power efficiency and comminution rate and quality of cut straw particles. Here fluid flow simulation has been preferred over particle simulation: - CFX 10.0 tool is not very effective for particle simulation techniques and computation time is increased considerably. - It’s very hard to realize particle simulation in CFX 10.0 because we have to define size and properties of each particle and besides this wall conditions would have to be defined differently for every boundary. - Besides this, it’s hard to realize cutting effect with straw particles in CFX 10.0 which otherwise would be comminuted in real life conditions. - The results obtained from fluid simulation are validated using experimental results and found to be nearly the same which clearly contradicts any need of performing particle simulation. KW - Häckseln KW - Ernte KW - Stroh KW - Partikelstrom KW - CFD KW - chaff KW - harvesting KW - Particle flow KW - simulation KW - FHD Y1 - 2007 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-4239 CY - Düsseldorf ER - TY - JOUR A1 - Benim, Ali Cemal A1 - Pfeiffelmann, Björn T1 - Comparison of Combustion Models for Lifted Hydrogen Flames within RANS Framework JF - Energies KW - DOAJ Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27727 SN - 1996-1073 VL - 13 IS - 1 PB - MDPI ER - TY - JOUR A1 - Benim, Ali Cemal A1 - Pfeiffelmann, Björn T1 - Validation of Combustion Models for Lifted Hydrogen Flame JF - E3S Web of Conferences Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27815 SN - 2267-1242 VL - 128 PB - edp sciences ER -