@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{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{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{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{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{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{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{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{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{Herder1997, author = {Herder, Jens}, title = {Cooperative Tools for Teaching : an Impact of a Network Environment}, series = {Annual Report of the Information Systems and Technology Center, University of Aizu, October 1997}, booktitle = {Annual Report of the Information Systems and Technology Center, University of Aizu, October 1997}, address = {Aizu}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-827}, pages = {3 -- 8}, year = {1997}, abstract = {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).}, language = {en} }