@inproceedings{BeckerHerder2012, author = {Becker, Thomas and Herder, Jens}, title = {Cost effective tangibles using fiducials for infrared multi-touch frames}, series = {15th International Conference on Human and Computer}, booktitle = {15th International Conference on Human and Computer}, address = {Hamamatsu/Aizu-Wakamatsu/Duesseldorf}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-16011}, pages = {7}, year = {2012}, abstract = {The late immersion of multi-touch sensitive displays enables the use of tangibles on multi-touch screens. There a several wide spread and/or sophisticated solutions to fulfill this need but they seem to have some flaws. One popular system at the time of writing is an overlay frame that can be placed on a normal display with the corresponding size. The frame creates a grid with infrared light emitting diodes. The disruption of this grid can be detected and messages with the positions are sent via usb to a connected computer. This system is quite robust in matters of ambient light insensitivity and also fast to calibrate. Unfortunately it is not created with the recognition of tangibles in mind and printed patterns can not be resolved. This article summarizes an attempt to create fiducials that are recognized by an infrared multi-touch frame as fingers. Those false fingers are checked by a software for known patterns. Once a known pattern (= fiducial) has been recognized its position and orientation are send with the finger positions towards the interactive software. The usability is tested with an example application where tangibles and finger touches are used in combination.}, language = {en} } @inproceedings{BrettschneiderHerderdeMooijetal.2019, author = {Brettschneider, Nico and Herder, Jens and de Mooij, Jeroen and Ryskeldiev, Bektur}, title = {Audio vs. Visual Avatars as Guides in Virtual Environments}, series = {21th International Conference on Human and Computer, HC-2018, March 27-28, 2019, Shizuoka University, Hamamatsu, Japan.}, booktitle = {21th International Conference on Human and Computer, HC-2018, March 27-28, 2019, Shizuoka University, Hamamatsu, Japan.}, editor = {Herder, Jens}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, doi = {10.20385/0hrj-qc02}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-23859}, pages = {9}, year = {2019}, abstract = {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.}, language = {en} } @inproceedings{FatemiTischbeinWirtzetal.2023, author = {Fatemi, Armin and Tischbein, Franziska and Wirtz, Frank and Schmoger, Christin and Dorendorf, Stefan and Schurtz, Annika and Echternacht, David and Ulbig, Andreas}, title = {On the Impact of Smartification Strategies for the State Estimation of Low Voltage Grids}, series = {13th "Internationale Energiewirtschaftstagung" (IEWT2023), February 15-17, 2023, Vienna, Austria}, booktitle = {13th "Internationale Energiewirtschaftstagung" (IEWT2023), February 15-17, 2023, Vienna, Austria}, address = {Wien}, doi = {10.48550/arXiv.2303.07964}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-41282}, pages = {1 -- 15}, year = {2023}, abstract = {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.}, language = {en} } @inproceedings{HerderBuentigDaemenetal.2014, author = {Herder, Jens and B{\"u}ntig, Fabian and Daemen, Jeff and Lang, Jaroslaw and L{\"u}ck, Florian and S{\"a}ger, Mitja and S{\"o}rensen, Roluf and Hermanni, Markus and Vonolfen, Wolfgang}, title = {Subtle Animations using Talent Tracking in a Virtual (TV) Studio}, series = {17th International Conference on Human and Computer}, booktitle = {17th International Conference on Human and Computer}, address = {Hamamatsu/Aizu-Wakamatsu/Duesseldorf}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-16009}, pages = {6}, year = {2014}, abstract = {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.}, language = {en} } @inproceedings{HerderLadwigVermeegenetal.2018, author = {Herder, Jens and Ladwig, Philipp and Vermeegen, Kai and Hergert, Dennis and Busch, Florian and Klever, Kevin and Holthausen, Sebastian and Ryskeldiev, Bektur}, title = {Mixed Reality Experience - How to Use a Virtual (TV) Studio for Demonstration of Virtual Reality Applications}, series = {GRAPP 2018 - 13th International Conference on Computer Graphics Theory and Applications}, booktitle = {GRAPP 2018 - 13th International Conference on Computer Graphics Theory and Applications}, publisher = {INSTICC}, address = {Setubal - Portugal}, isbn = {978-989-758-287-5}, doi = {10.5220/0006637502810287}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-15823}, pages = {281 -- 287}, year = {2018}, abstract = {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.}, language = {en} } @inproceedings{Neef2013, author = {Neef, Matthias}, title = {Innerst{\"a}dtische Nutzung von Kleinwindkraftanlagen: Potentiale und H{\"u}rden}, series = {M{\"u}lheimer Initiative f{\"u}r Klimaschutz, 06.05.2013}, booktitle = {M{\"u}lheimer Initiative f{\"u}r Klimaschutz, 06.05.2013}, address = {M{\"u}lheim an der Ruhr}, organization = {M{\"u}lheimer Initiative f{\"u}r Klimaschutz e.V.}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-21017}, year = {2013}, language = {de} } @inproceedings{RakowFaeskornWoykeSaatzetal.2022, author = {Rakow, Thomas C. and Faeskorn-Woyke, Heide and Saatz, Inga Marina and Knolle, Harm}, title = {OER Tools and Courses for Teaching Database Systems as Developed in the Project EILD.nrw}, series = {LWDA'22: Lernen, Wissen, Daten, Analysen. October 05-07, 2022, Hildesheim, Germany}, volume = {CEUR Workshop Proceedings: 3341}, booktitle = {LWDA'22: Lernen, Wissen, Daten, Analysen. October 05-07, 2022, Hildesheim, Germany}, editor = {Reuss, Pascal and Eisenstadt, Viktor and Sch{\"o}nborn, Jakob and Sch{\"a}fer, Jero}, address = {Aachen}, issn = {1613-0073}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-40622}, year = {2022}, abstract = {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.}, language = {en} } @inproceedings{RakowKlessHasleretal.2023, author = {Rakow, Thomas C. and Kless, Andr{\´e} and Hasler, Charlotte and Knolle, Harm and Faeskorn-Woyke, Heide and Saatz, Inga Marina and Lambert, Jens and Focken, Mareike}, title = {Developing OERs for Teaching Database Systems: A Two-Year Effort of Four Universities of Applied Sciences}, series = {GI Edition Proceedings Band 331 "BTW 2023" : 6. - 10. M{\"a}rz 2023 in Dreden}, booktitle = {GI Edition Proceedings Band 331 "BTW 2023" : 6. - 10. M{\"a}rz 2023 in Dreden}, editor = {K{\"o}nig-Ries, Birgitta and Scherzinger, Stefanie and Lehner, Wolfgang and Vossen, Gottfried}, publisher = {K{\"o}llen}, address = {Bonn}, isbn = {9783885797258}, doi = {10.18420/BTW2023-31}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-40611}, year = {2023}, language = {en} } @inproceedings{Soehnitz2021, author = {S{\"o}hnitz, Stefanie}, title = {Import in OPUS}, series = {OPUS 4-Workshop fand im Rahmen des 109. Deutschen Bibliothekartages in Bremen am 15. Juni 2021}, booktitle = {OPUS 4-Workshop fand im Rahmen des 109. Deutschen Bibliothekartages in Bremen am 15. Juni 2021}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, pages = {34}, year = {2021}, abstract = {Import von Daten nach OPUS 4 unter Nutzung der SWORD-Schnittstelle am Praxisbeispiel der Hochschule D{\"u}sseldorf.}, language = {de} } @inproceedings{TiatorGeigerGrimm2020, author = {Tiator, Marcel and Geiger, Christian and Grimm, Paul}, title = {Point Cloud Segmentation with Deep Reinforcement Learning}, series = {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}, booktitle = {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}, editor = {Dilkina, B. and Catala, A. and Giacomo, G. De}, publisher = {IOS Press}, isbn = {978-1-64368-100-9}, doi = {10.3233/FAIA200417}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-30872}, pages = {2768 -- 2775}, year = {2020}, language = {en} } @inproceedings{vonBergPrinzSteffens2022, author = {von Berg, Markus and Prinz, Lukas and Steffens, Jochen}, title = {Comparing individual perception of timbre and reverberance}, address = {Gyeoungju, S{\"u}dkorea}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-38706}, pages = {5}, year = {2022}, abstract = {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.}, language = {en} } @inproceedings{vonBergSchwoererPrinzetal.2023, author = {von Berg, Markus and Schw{\"o}rer, Paul and Prinz, Lukas and Steffens, Jochen}, title = {Analysis of physical and perceptual properties of room impulse responses: development of an online tool}, series = {Forum Acusticuum 2023: 10th Convention of European Acoustics Association, Turin, Italy, 11th-15th September 2023}, booktitle = {Forum Acusticuum 2023: 10th Convention of European Acoustics Association, Turin, Italy, 11th-15th September 2023}, publisher = {EAA}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-41955}, pages = {8}, year = {2023}, abstract = {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.}, language = {en} } @inproceedings{OPUS4-1571, title = {Digitale Hochschule. Tagungsband der 93. BundesDekaneKonferenz Wirtschaftswissenschaften 16.-18. Mai 2018, Hochschule D{\"u}sseldorf}, editor = {Albers, Felicitas G.}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, issn = {2365-3361}, doi = {10.20385/2365-3361/2018.46}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-15711}, year = {2018}, abstract = {Der Tagungsband umfasst Beitr{\"a}ge der 93. BundesDekaneKonferenz Wirtschaftswissenschaften, die unter dem Thema ‚Digitale Hochschule' vom 16.-18. Mai 2018 an der Hochschule D{\"u}sseldorf stattgefunden hat. Ausgehend von konzeptionellen {\"U}berlegungen werden digitale Herausforderungen der Lehre ebenso thematisiert wie Berichte {\"u}ber erste praktische Erfahrungen einer ‚Lehre 4.0' einschließlich der Anwendung von ‚learning analytics'. Workshopberichte dokumentieren die Diskurse der Anwesenden zur Digitalisierung von Lehre, Pr{\"u}fung und Forschung. Schlussfolgerungen aus der digitalen Transformation in der Wirtschaftspraxis geben den Hochschulen Impulse f{\"u}r eigene Digitalisierungsbem{\"u}hungen. Die Er{\"o}rterung urheberrechtlicher Herausforderungen der Digitalisierung zeigen einen wichtigen rechtlichen Rahmen auf. Mit der Skizzierung faszinierender Erscheinungsbilder der Fibonacci-Zahlen gelingt schließlich ein kurzweiliger Exkurs mit erstaunlichen Bez{\"u}gen zum Tagungsthema.}, language = {de} } @inproceedings{OPUS4-2152, title = {Proceedings of the HSD Student Engineering Conferences | Issue 1: Selected Papers from the Courses 2018/2019}, editor = {Neef, Matthias and Zielke, Thomas and Fussenecker, Claudia and Niemann, J{\"o}rg}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, issn = {2700-1857}, doi = {10.20385/2700-1857/2020.1}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-21527}, pages = {45}, year = {2020}, language = {en} } @inproceedings{OPUS4-2336, title = {SIMULAND 2020: Simulation landtechnischer Prozesse, D{\"u}sseldorf, 19. M{\"a}rz 2020}, editor = {Jahr, Andreas and Batos, Andrej}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {978-3-941334-30-4}, doi = {10.20385/978-3-941334-30-4}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-23368}, pages = {134}, year = {2020}, abstract = {Die Simulation landwirtschaftlicher Prozesse hat in den vergangenen Jahren stark an Bedeutung gewonnen. Damit ist die Hoffnung verbunden, neue Erkenntnisse zu generieren mit dem Ziel der Erh{\"o}hung der Effizienz, Qualit{\"a}t und Wirtschaftlichkeit in der Landwirtschaft. Besonders große Herausforderungen stellen dabei die Modellierung landwirtschaftlicher G{\"u}ter und der f{\"u}r Simulationen teilweise erforderliche, hohe Rechenaufwand dar. Um der bereits recht weiten und weiter fortschreitenden Verbreitung dieser Technologien Rechnung zu tragen und sie zu f{\"o}rdern, entstand die Idee f{\"u}r eine themenspezifische Tagung, die sich ausdr{\"u}cklich und ausschließlich mit der Simulation landtechnischer G{\"u}ter und Prozesse befasst.}, subject = {Simulation}, language = {de} } @inproceedings{OPUS4-1941, title = {SDMA - Digitale Transformation - Symposium f{\"u}r digitale Methoden in der Architektur 2019}, editor = {Fleischmann, Moritz and Westendorf, Nick}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, isbn = {978-3-941334-27-4}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-19419}, pages = {94}, year = {2019}, abstract = {Namhafte Keynotes, aufschlussreiche Impulsvortr{\"a}ge sowie eine Vielzahl interessanter Workshops: Das war das SDMA2019. Von Building Information Modeling {\"u}ber Fabrikation, Parametrik und Simulation reichten die Themen bis hin zur Visualisierung und Virtual Reality. Parallel fand an beiden Veranstaltungstagen die umfangreiche Hausmesse mit zahlreichen Ausstellern statt. Es galt das Wissen und die F{\"a}higkeiten aller Besucher zu bereichern, Neuigkeiten in der Technik zu erkunden und in den Austausch mit Kollegen und Partnern zu treten.}, language = {de} } @inproceedings{OPUS4-4010, title = {New Work - Next Learning: Tagungsband zum Themennachmittag}, editor = {Diedrich, Andreas and Lehmann, Christina}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, issn = {2365-3361}, doi = {10.20385/opus4-4010}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-40103}, pages = {55}, year = {2023}, abstract = {Der Tagungsband umfasst s{\"a}mtliche Beitr{\"a}ge des Themennachmittags „New Work - Next Learning", der am 22. November 2022 am Fachbereich Wirtschaftswissenschaften der Hochschule D{\"u}sseldorf stattgefunden hat. Ausgehend von der Fragestellung, welche Mitarbeiter und F{\"u}hrungsnachwuchskr{\"a}fte Unternehmen zur erfolgreichen Bew{\"a}ltigung des digitalen Wandels ben{\"o}tigen und welche Erwartungen Studierende an zuk{\"u}nftige Arbeitsstrukturen und -prozesse haben, wurde auch kritisch diskutiert, welche Chancen und Risiken hierbei aus der Digitalisierung der Hochschule resultieren und was dies f{\"u}r zuk{\"u}nftige Forschungs-, Lehr- und Verwaltungsprozesse an Hochschulen bedeutet. Dazu haben unterschiedliche Referenten das Tagungsthema aus Sicht von Wirtschaftspraxis und Hochschule beleuchtetet und wichtige Impulse zu den Potenzialen der Digitalisierung in der Hochschul- und Weiterbildung, zur Bedeutung von selbstbestimmtem und eigenverantwortlichem Lernen, innovativen Lehr- und Lernkonzepten sowie einem ver{\"a}nderten Rollenverst{\"a}ndnis beigetragen.}, language = {de} }