TY - CHAP A1 - Özman, Cansu A1 - Gül, Fethi A1 - Diederich, Michael A1 - Benim, Ali Cemal A1 - Janoske, Uwe T1 - Computational and Experimental Investigation of Flow and Convective Heat Transfer along Rough Surfaces T2 - Proceedings of CONV-22: Int. Symp. on Convective Heat and Mass Transfer June 5 – 10, 2022, Turkey KW - Numerische Strömungssimulation KW - Wärmeübertragung KW - Rauigkeit KW - Turbulenzmodell Y1 - 2022 U6 - https://doi.org/10.1615/ICHMT.2022.CONV22.590 SP - 447 EP - 454 PB - Begellhouse ER - TY - JOUR A1 - Çiçek, Aydın A1 - Koçyiğit, Ali T1 - Episodic evolution and active tectonics of the Karamık Graben in the apex of Isparta Angle, SW Türkiye JF - Mediterranean Geoscience Reviews KW - Neotektonik KW - Verwerfung KW - Kurve von Isparta KW - Karamık Graben KW - Anatolien Y1 - 2025 U6 - https://doi.org/10.1007/s42990-024-00151-5 SN - 2661-863X PB - Springer Nature ER - TY - JOUR A1 - Zuev, Dennis A1 - Virchow, Fabian T1 - Performing national-identity: the many logics of producing national belongings in public rituals and events JF - Nations and Nationalism KW - FBSK_Webseite Y1 - 2014 U6 - https://doi.org/10.1111/nana.12063 VL - 20 IS - 2 SP - 191 EP - 199 PB - Wiley ER - TY - CHAP A1 - Zimmer, Christian A1 - Kruse, Lucie A1 - Rolvien, Lara A1 - Gallinat, Jürgen A1 - Geiger, Christian ED - De Paolis, Lucio Tommaso ED - Arpaia, Pasquale ED - Sacco, Marco T1 - Transformation of MetaHumans for a Generic XR Workflow T2 - Extended Reality: International Conference, XR Salento 2025, Otranto, Italy, June 17–20, 2025, Proceedings, Part VI KW - Erweiterte Realität (Informatik) KW - Avatar (Informatik) KW - Arbeitsablauf KW - Fotogrammetrie KW - Computeranimation Y1 - 2025 SN - 9783031977770 U6 - https://doi.org/10.1007/978-3-031-97778-7_5 SN - 0302-9743 VL - Lecture Notes in Computer Science 15742 SP - 73 EP - 92 PB - Springer Nature Switzerland CY - Cham ER - TY - CHAP A1 - Zimmer, Christian A1 - Drochtert, Daniel A1 - Geiger, Christian A1 - Brink, Michael A1 - Mütze, Rolf ED - Billinghurst, Mark ED - Rungjiratananon, Witawat T1 - Mobile previsualization using augmented reality T2 - SIGGRAPH Asia 2017 Mobile Graphics & Interactive Applications on - SA '17, Bangkok, 27.11.2017 - 30.11.2017 Y1 - 2017 UR - http://dl.acm.org/citation.cfm?doid=3132787 SN - 9781450354103 U6 - https://doi.org/10.1145/3132787.3132805 SP - 1 EP - 5 PB - ACM Press CY - New York ER - TY - CHAP A1 - Zimmer, Christian A1 - Bertram, Michael A1 - Büntig, Fabian A1 - Drochtert, Daniel A1 - Geiger, Christian ED - Billinghurst, Mark ED - Rungjiratananon, Witawat T1 - Mobile augmented reality illustrations that entertain and inform T2 - SIGGRAPH Asia 2017 Mobile Graphics & Interactive Applications on - SA '17, Bangkok, 27.11.2017 - 30.11.2017 Y1 - 2017 UR - http://dl.acm.org/citation.cfm?doid=3132787 SN - 9781450354103 U6 - https://doi.org/10.1145/3132787.3132804 SP - 1 EP - 7 PB - ACM Press CY - New York ER - TY - CHAP A1 - Zimmer, Christian A1 - Bertram, Michael A1 - Büntig, Fabian A1 - Drochtert, Daniel A1 - Geiger, Christian ED - Billinghurst, Mark ED - Rungjiratananon, Witawat T1 - Mobile augmented reality illustrations that entertain and inform with the hololens T2 - SIGGRAPH Asia 2017 Mobile Graphics & Interactive Applications on - SA '17, Bangkok, 27.11.2017 - 30.11.2017 Y1 - 2017 UR - http://dl.acm.org/citation.cfm?doid=3132787 SN - 9781450354103 U6 - https://doi.org/10.1145/3132787.3140546 PB - ACM Press CY - New York ER - TY - CHAP A1 - Zielke, Thomas A1 - Neef, Matthias A1 - Fussenecker, Claudia T1 - Teaching Engineering Conferences T2 - Proceedings of the Canadian Engineering Education Association (CEEA) Conference N2 - This article is on a university course called Engineering Conferences. It has been developed by the authors and installed as a mandatory part of the curriculum in three master’s degree programs for engineering students. The participants of the course are postgraduates with different nationalities, mostly German, and different technical backgrounds. They study Mechanical Engineering, Simulation and Experimental Technology, or International Business Engineering. The basic idea of the course concept goes far beyond simply teaching the standards of academic writing and skills for using scientific publications. By using a learnercentered approach, the students get engaged in typical activities around an active attendance of a real conference. Students learn to locate the field of their bachelor thesis or project report in the world of research communities, scientific journals and engineering conferences. They learn about conferences matching their bachelor/project topic. They write a paper complying with common academic standards, submit it to a mock-up conference, and review submissions of their fellow students. Students also produce a poster and have to defend it in a poster session held publicly on the campus. Engineering Conferences is a course on scientific communication and presentation that also aims at the development of other skills and competences needed in the world of modern engineering. KW - Engineering Conferences Y1 - 2017 CY - Winnipeg ER - TY - CHAP A1 - Zielke, Thomas A1 - Bernst, Irina A1 - Crombach, Tobias A1 - Becker, Martin A1 - Lippel, Jens ED - Gómez Chova, Luis ED - López Martínez, A. ED - Candel Torres, I. T1 - WHAT CAN BE LEARNED BY GRADING ANALYTICS? T2 - INTED 2018: 12th International Technology, Education and Development Conference : 5-7 March, 2018, Valencia (Spain) : conference proceedings Y1 - 2018 SN - 978-84-697-9480-7 U6 - https://doi.org/10.21125/inted.2018.0593 VL - 12th International Technology, Education and Development Conference SP - 3097 EP - 3106 PB - IATED Academy CY - Valencia, Spain ER - TY - CHAP A1 - Zhao, Kun A1 - Meuter, Mirko A1 - Nunn, Christian A1 - Muller, Dennis A1 - Muller-Schneiders, Stefan A1 - Pauli, Josef T1 - A novel multi-lane detection and tracking system T2 - 2012 IEEE Intelligent Vehicles Symposium (IV) Y1 - 2012 SN - 978-1-4673-2119-8 U6 - https://doi.org/10.1109/IVS.2012.6232168 SP - 1084 EP - 1089 PB - IEEE ER - TY - JOUR A1 - Zerrer, Patrick A1 - Pressmann, Paul A1 - Puschmann, Cornelius A1 - Krieter, Philipp T1 - Beyond the Black Box: A Multimodal Approach to Understanding In-App Communication JF - Medien & Kommunikationswissenschaft N2 - Mobile devices are increasingly central as sources of up-to-date information, making the precise recording of information behavior on these devices more relevant for research. Established methods of automated data collection are reaching their limits when capturing in-app communication, such as political content within social media applications. Based on two case studies, we present two approaches that enable the identification of exposure to relevant content and, to some extent, the collection of in-app content. The first case study focuses on identifying relevant exposure across different apps on a mobile device using app tracking and screen recordings. The second case study focuses on linking exposure to seen content and deriving respective content features to obtain an enriched dataset. We discuss the advantages and limitations of both approaches and present conceptual frameworks for processing and analyzing such data. KW - mobile tracking KW - screen recording KW - mobile sensing KW - android logs KW - in-app tracking Y1 - 2026 U6 - https://doi.org/10.5771/1615-634X-2026-1-31 SN - 1615-634X VL - 74 IS - 1 SP - 31 EP - 51 PB - Nomos Verlag ER - TY - JOUR A1 - Zengin, İbrahim A1 - Erdoğan, Beytullah A1 - Benim, Ali Cemal T1 - CFD and Taguchi based optimization of air driven single stage partial admission axial turbine blade profiles JF - Energy KW - Taguchi-Methode KW - Numerische Strömungssimulation KW - Axialturbine KW - Beschaufelung KW - Optimierung KW - Impulse turbine KW - Partial-admission Y1 - 2024 U6 - https://doi.org/10.1016/j.energy.2024.130333 SN - 0360-5442 VL - 290 PB - Elsevier ER - TY - JOUR A1 - Zellner, R. A1 - Herrmann, H. A1 - Wiesen, P. A1 - Nehr, Sascha T1 - New and Emerging Technologies of Societal Relevance: Impact on Air Quality and Climate JF - Chemie Ingenieur Technik KW - Luftreinhaltung Y1 - 2016 U6 - https://doi.org/10.1002/cite.201650083 SN - 0009-286X VL - 88 IS - 9 SP - 1257 EP - 1258 PB - Wiley ER - TY - CHAP A1 - Zeller, Marc A1 - Waschulzik, Thomas A1 - Carlan, Carmen A1 - Serahlazau, Marat A1 - Bahlmann, Claus A1 - Wu, Zhiliang A1 - Spieckermann, Sigurd A1 - Krompass, Denis A1 - Geerkens, Simon A1 - Sieberichs, Christian A1 - Kirchheim, Konstantin A1 - Özen, Batu Kaan A1 - Robles, Lucia Diez ED - Ceccarelli, Andrea ED - Trapp, Mario ED - Bondavalli, Andrea ED - Schoitsch, Erwin ED - Gallina, Barbara ED - Bitsch, Friedemann T1 - Continuous Development and Safety Assurance Pipeline for ML-Based Systems in the Railway Domain T2 - Computer Safety, Reliability, and Security. SAFECOMP 2024 Workshops. DECSoS, SASSUR, TOASTS, and WAISE, Florence, Italy, September 17, 2024, Proceedings. Lecture Notes in Computer Science, vol 14989 KW - Maschinelles Lernen KW - Sicherheit KW - Eisenbahn KW - Autonomes Fahrzeug Y1 - 2024 SN - 9783031687372 U6 - https://doi.org/10.1007/978-3-031-68738-9_36 SN - 0302-9743 SP - 446 EP - 459 PB - Springer Nature CY - Cham ER - TY - JOUR A1 - Zander, Nils A1 - Ruess, Martin A1 - Bog, Tino A1 - Kollmannsberger, Stefan A1 - Rank, Ernst T1 - Multi-level hp -adaptivity for cohesive fracture modeling JF - International Journal for Numerical Methods in Engineering Y1 - 2017 U6 - https://doi.org/10.1002/nme.5340 SN - 1097-0207 VL - 109 IS - 13 SP - 1723 EP - 1755 PB - Wiley ER - TY - JOUR A1 - Zander, Nils A1 - Kollmannsberger, Stefan A1 - Ruess, Martin A1 - Yosibash, Z. A1 - Rank, Ernst T1 - The Finite Cell Method for linear thermoelasticity JF - Computers & Mathematics with Applications Y1 - 2012 U6 - https://doi.org/10.1016/j.camwa.2012.09.002 SN - 0898-1221 N1 - Open Archiv VL - 64 IS - 11 SP - 3527 EP - 3541 PB - Elsevier ER - TY - JOUR A1 - Zander, Nils A1 - Bog, Tino A1 - Elhaddad, Mohamed A1 - Espinoza, R. A1 - Hu, H. A1 - Joly, A. A1 - Wu, C. A1 - Zerbe, P. A1 - Düster, Alexander A1 - Kollmannsberger, Stefan A1 - Parvizian, J. A1 - Ruess, Martin A1 - Schillinger, Dominik A1 - Rank, Ernst T1 - FCMLab: A finite cell research toolbox for MATLAB JF - Advances in Engineering Software Y1 - 2014 U6 - https://doi.org/10.1016/j.advengsoft.2014.04.004 SN - 0965-9978 VL - 74 SP - 49 EP - 63 PB - Elsevier ER - TY - CHAP A1 - Yuwono, Steve A1 - Schwung, Andreas A1 - Schwung, Dorothea T1 - The Impact of Communication and Memory in State-Based Potential Game-based Distributed Optimization T2 - 2022 IEEE 20th International Conference on Industrial Informatics (INDIN) KW - Intelligente Fertigung KW - Bestärkendes Lernen (Künstliche Intelligenz) KW - Speicher (Informatik) KW - Spieltheorie KW - Mehragentensystem Y1 - 2022 U6 - https://doi.org/10.1109/INDIN51773.2022.9976106 SP - 335 EP - 340 PB - IEEE ER - TY - JOUR A1 - Yuwono, Steve A1 - Schwung, Andreas A1 - Schwung, Dorothea T1 - Integrating Deep Model-Based Learning With Modular State-Based Stackelberg Games for Self-Optimizing Distributed Production Systems JF - IEEE Transactions on Cybernetics KW - Intelligente Fertigung KW - Optimierung KW - Maschinelles Lernen KW - Deep Learning KW - Stackelberg-Duopol Y1 - 2025 U6 - https://doi.org/10.1109/TCYB.2025.3610707 SN - 2168-2267 PB - Institute of Electrical and Electronics Engineers (IEEE) ER - TY - CHAP A1 - Yerichuk, Deanna A1 - de Bánffy-Hall, Alicia A1 - Coffman, Don A1 - Cooper, N. A1 - Deane, K. A1 - Johnston, T. A1 - Kleber, M. A1 - Shiobara, M. A1 - Willingham, L. A1 - Veblen, K. ED - Cohen, Mary L. T1 - Policy Directions for Community Music: Looking Back, Looking Forward T2 - Innovation and Change in Community Music Proceedings of the XV International Seminar of the ISME Commission on Community Music Activity Edinburgh College, Edinburgh, Scotland 19-23 July 2016 Y1 - 2016 UR - https://www.isme.org/sites/default/files/documents/2016_Proceedings%20Commission%20on%20CMA_FinalB.pdf SN - 978-0-6481219-1-6 SP - 132 EP - 151 PB - International Society for Music Education ER - TY - JOUR A1 - Yang, Zhengxiong A1 - Kollmannsberger, Stefan A1 - Düster, Alexander A1 - Ruess, Martin A1 - Garcia, Eduardo Grande A1 - Burgkart, Rainer A1 - Rank, Ernst T1 - Non-standard bone simulation: interactive numerical analysis by computational steering JF - Computing and Visualization in Science Y1 - 2011 U6 - https://doi.org/10.1007/s00791-012-0175-y VL - 14 IS - 5 SP - 207 EP - 216 PB - Springer ER - TY - JOUR A1 - Yang, Z. A1 - Ruess, Martin A1 - Kollmannsberger, Stefan A1 - Düster, Alexander A1 - Rank, Ernst T1 - An efficient integration technique for the voxel-based finite cell method JF - International Journal for Numerical Methods in Engineering Y1 - 2012 U6 - https://doi.org/10.1002/nme.4269 SN - 1097-0207 VL - 91 IS - 5 SP - 457 EP - 471 PB - Wiley ER - TY - CHAP A1 - Yamazaki, Yasuhiro A1 - Herder, Jens T1 - Exploring Spatial Audio Conferencing Functionality in Multiuser Virtual Environments T2 - The Third International Conference on Collaborative Virtual Environments N2 - A chatspace was developed that allows conversation with 3D sound using networked streaming in a shared virtual environment. The system provides an interface to advanced audio features, such as a "whisper function" for conveying a confided audio stream. This study explores the use of spatial audio to enhance a user's experience in multiuser virtual environments. KW - chatspaces KW - groupware KW - narrowcasting functions KW - networked audio KW - spatial audio KW - VSVR Y1 - 2000 SP - 207 EP - 208 PB - ACM CY - San Francisco ER - TY - CHAP A1 - Yalçınkaya, Orhan A1 - Durmaz, Ufuk A1 - Tepe, Ahmet Ümit A1 - Benim, Ali Cemal A1 - Uysal, Ünal T1 - Numerical Analysis of Roughened Target Surface for Enhancing Jet Impingement Cooling T2 - Advances in Computational Heat and Mass Transfer: Proceedings of the 14th International Conference on Computational Heat and Mass Transfer (ICCHMT 2023), 4-8 September, 2023, Düsseldorf, Germany KW - Numerische Strömungssimulation KW - Wärmeübertragung KW - Aufrauhen KW - Kühlung KW - Jet Impingement Cooling Y1 - 2024 SN - 9783031672408 U6 - https://doi.org/10.1007/978-3-031-67241-5_64 SN - 2195-4356 VL - 1 SP - 713 EP - 720 PB - Springer Nature CY - Cham ER - TY - JOUR A1 - Xia, Jiliang A1 - Smith, Brian L. A1 - Benim, Ali Cemal A1 - Schmidli, Jiirg A1 - Yadigaroglu, George T1 - Effect of inlet and outlet boundary conditions on swirling flows JF - Computers & Fluids KW - Numerische Strömungssimulation KW - Wirbelströmung Y1 - 1997 U6 - https://doi.org/10.1016/S0045-7930(97)00026-1 SN - 0045-7930 VL - 26 IS - 8 SP - 811 EP - 823 PB - Elsevier ER - TY - CHAP A1 - Wöldecke, Björn A1 - Vierjahn, Tom A1 - Flasko, Matthias A1 - Herder, Jens A1 - Geiger, Christian T1 - Steering actors through a virtual set employing vibro-tactile feedback T2 - TEI '09 Proceedings of the 3rd International Conference on Tangible and Embedded Interaction N2 - Actors in virtual studio productions are faced with the challenge that they have to interact with invisible virtual objects because these elements are rendered separately and combined with the real image later in the production process. Virtual sets typically use static virtual elements or animated objects with predefined behavior so that actors can practice their performance and errors can be corrected in the post production. With the demand for inexpensive live recording and interactive TV productions, virtual objects will be dynamically rendered at arbitrary positions that cannot be predicted by the actor. Perceptive aids have to be employed to support a natural interaction with these objects. In our work we study the effect of haptic feedback for a simple form of interaction. Actors are equipped with a custom built haptic belt and get vibrotactile feedback during a small navigational task (path following). We present a prototype of a wireless vibrotactile feedback device and a small framework for evaluating haptic feedback in a virtual set environment. Results from an initial pilot study indicate that vibrotactile feedback is a suitable non-visual aid for interaction that is at least comparable to audio-visual alternatives used in virtual set productions. KW - tactile feedback KW - interaction in virtual sets KW - navigation aids KW - FHD KW - VSVR KW - Virtual (TV) Studio Y1 - 2009 UR - https://dl.acm.org/citation.cfm?id=1517703 SN - 978-1-60558-493-5 U6 - https://doi.org/10.1145/1517664.1517703 SP - 169 EP - 174 PB - ACM CY - New York ER - TY - CHAP A1 - Wöldecke, Björn A1 - Marinos, Dionysios A1 - Pogscheba, Patrick A1 - Geiger, Christian A1 - Herder, Jens A1 - Schwirten, Tobias T1 - radarTHEREMIN - Creating Musical Expressions in a Virtual Studio Environment T2 - 2011 IEEE International Symposium on VR Innovation N2 - In this paper we describe a prototypical system for live musical performance in a virtual studio environment. The performer stands in front of the studio camera and interacts with an infrared-laser-based multi-touch device. The final TV image shows the performer interacting with a virtual screen which is augmented in front of herself. To overcome the problem of the performer not seeing this virtual screen in reality, we use a special hexagonal grid to facilitate the performer's awareness of this novel Theremin-like virtual musical instrument. KW - multi-point interfaces KW - musical expression KW - virtual studio KW - VSVR KW - Virtual (TV) Studio Y1 - 2011 UR - https://ieeexplore.ieee.org/document/5759671 SN - 978-1-4577-0055-2 U6 - https://doi.org/10.1109/ISVRI.2011.5759671 SP - 345 EP - 346 PB - IEEE CY - Singapore ER - TY - CHAP A1 - Wöldecke, Björn A1 - Marinos, Dionysios A1 - Geiger, Christian ED - Gehring, Sven ED - Boring, Sebastian ED - Quigley, Aaron T1 - Flexible Registration of Multiple Displays T2 - Proceedings of The International Symposium on Pervasive Displays, Copenhagen, 03.06.2014-04.06.2014 Y1 - 2014 UR - https://dl.acm.org/doi/proceedings/10.1145/2611009 SN - 9781450329521 U6 - https://doi.org/10.1145/2611009.2611030 SP - 86 EP - 91 PB - ACM CY - New York ER - TY - JOUR A1 - Wolf, Dominik Werner A1 - Thielbeer, Boris A1 - Ulrich, Markus A1 - Braun, Alexander T1 - Wavefront aberration measurements based on the Background Oriented Schlieren method JF - Measurement: Sensors N2 - Applications based on neural networks tend to be very sensitive to dataset shifts. Hence, the perception chain for autonomous driving is safeguarded against perturbations by imposing exaggerated optical quality requirements. Due to the non-linear coupling of optical elements, system requirements of camera-based Advanced Driver Assistance Systems (ADAS) can not be easily decomposed into individual part tolerances of the objective lens and the windscreen. This holds true for intensity-based part measurements, e.g. slanted edge measurements according to ISO12233, which can fundamentally not capture interference effects of the complex light field. Instead wavefront-based part measurements are required. Unfortunately, state-of-the-art wavefront measurement techniques are limited by the spanned sensitive area of the Shack-Hartmann lenslet array or the aperture stop of a corresponding interferometrical setup, respectively. Further, both measurements are limited by using collimated light only, whereas the target application has a large (angular) field of view, requiring many different measurements. We address those bottlenecks by proposing a novel wavefront aberration measurement procedure based on the Background Oriented Schlieren (BOS) method utilizing image auto-correlation. We analytically derive the governing equations for determining the Zernike coefficients of a wavefront aberration map in the knowledge of the local refractive power map obtained by a high-resolution BOS measurement. Furthermore, we experimentally demonstrate the feasibility of the measurement technique. Applying this novel method yields the promise of affordable wavefront aberration measurements only requiring a high-resolution camera and a sophisticated alignment strategy. KW - Wavefront aberration measurements KW - Deep optics KW - Dataset shifts KW - Data augmentation KW - Autonomous driving Y1 - 2024 U6 - https://doi.org/10.1016/j.measen.2024.101509 SN - 2665-9174 N1 - In Press, Corrected Proof PB - Elsevier ER - TY - CHAP A1 - Wolf, Christian A1 - Gaida, Daniel A1 - Stuhlsatz, André A1 - McLoone, S. A1 - Bongards, Michael T1 - A Comparison of Performance of Advanced Pattern Recognition Methods for Organic Acid Prediction in Biogas Plants Using UV/vis Spectroscopic Online-Measurements T2 - Proceedings of the 2010 International Conference on Life System Modeling and Simulation (LSMS), Wuxi, China, 2010 Y1 - 2010 ER - TY - JOUR A1 - Wolf, Christian A1 - Gaida, Daniel A1 - Stuhlsatz, André A1 - Ludwig, Thomas A1 - McLoone, Seán A1 - Bongards, Michael T1 - Predicting organic acid concentration from UV/vis spectrometry measurements – a comparison of machine learning techniques JF - Transactions of the Institute of Measurement and Control Y1 - 2013 U6 - https://doi.org/10.1177/0142331211403797 VL - 35 IS - 1 SP - 5 EP - 15 PB - sage journals ER - TY - CHAP A1 - Woldecke, Bjorn A1 - Marinos, Dionysios A1 - Geiger, Christian T1 - Poster: MagicLensVS - Towards a flexible framework for quick setup of visual feedback in a virtual studio T2 - 2013 IEEE Symposium on 3D User Interfaces (3DUI), 16.03.2013 - 17.03.2013, Orlando KW - Poster Y1 - 2013 UR - http://ieeexplore.ieee.org/document/6550239/ SN - 978-1-4673-6098-2 U6 - https://doi.org/10.1109/3DUI.2013.6550239 SP - 183 EP - 184 PB - IEEE ER - TY - CHAP A1 - Wohlmacher, Bernhard A1 - Mertl, Fabian A1 - Klapperich, Holger A1 - Huldtgren, Alina ED - Ziefle, Martina ED - Mulvenna, Maurice ED - Maciaszek, Leszek T1 - Hybrid Ludo: Combination of a Tangible UI for Seniors and a Web-based Ludo Game T2 - Proceedings of the 8th International Conference on Information and Communication Technologies for Ageing Well and e-Health, April 23-25, 2022 Y1 - 2022 SN - 978-989-758-566-1 U6 - https://doi.org/10.5220/0011069500003188 SN - 2184-4984 SP - 283 EP - 290 PB - SciTePress ER - TY - CHAP A1 - Wohlmacher, Bernhard A1 - Klapperich, Holger A1 - Mertle, Fabian A1 - Huldtgren, Alina ED - Stolze, Markus ED - Loch, Frieder ED - Baldauf, Matthias ED - Alt, Florian ED - Schneegrass, Christina ED - Kosch, Thomas ED - Hirzle, Teresa ED - Sadeghian, Shadan ED - Draxler, Fiona ED - Bektas, Kenan ED - Lohan, Katrin ED - Knierim, Pascal T1 - Overcoming technology and communication barriers in intergenerational communication with a tangible interface T2 - MuC '23: Mensch und Computer 2023, Rapperswil Switzerland, September 3 - 6, 2023 N2 - Despite the higher uptake of digital media also in older age groups, there are still challenges for people of high ages and with cognitive or motoric problems, which prevent them from learning and using devices like smartphones or tablets. Tangible user interfaces provide an opportunity to connect these people to social media, thereby increasing their digital participation in society and reducing loneliness. In this paper, we discuss the challenges of intergenerational communication and research the opportunities affiliated with tangible technologies to overcome technology barriers for adults of high ages. We present a hybrid system for social media interactions between young smartphone users and their old relatives, who do not use mobile technologies. The system consists of a tangible user interface designed specifically for old adults that connects to a standard mobile messenger service. TAMI was designed in a user-centered process to fulfill the needs of older adults and tested in a longer-term field study with pairs of young and old relatives. Y1 - 2023 SN - 979-8-4007-0771-1 U6 - https://doi.org/10.1145/3603555.3608554 SP - 508 EP - 512 PB - Association for Computing Machinery CY - New York ER - TY - JOUR A1 - Wittpahl, Christian A1 - Zakour, Hatem Ben A1 - Lehmann, Matthias A1 - Braun, Alexander T1 - Realistic Image Degradation with Measured PSF JF - Electronic Imaging, Autonomous Vehicles and Machines 2018 KW - SiL/HiL Y1 - 2018 U6 - https://doi.org/10.2352/ISSN.2470-1173.2018.17.AVM-149 SN - 2470-1173 IS - 17 PB - Society for Imaging Science and Technology ER - TY - JOUR A1 - Winkler, Michael A1 - Becker, Klaus A1 - Doolan, Con A1 - Kameier, Frank A1 - Paschereit, Christian Oliver T1 - Aeroacoustic Effects of a Cylinder-Plate Configuration JF - AIAA Journal Y1 - 2012 U6 - https://doi.org/10.2514/1.j051578 VL - 50 IS - 7 SP - 1614 EP - 1620 PB - ARC ER - TY - CHAP A1 - Windte, Jan A1 - Radespiel, Rolf A1 - Neef, Matthias ED - Kroll, Norbert ED - Fassbender, Jens K. T1 - Aerodynamic Analysis of Flapping Airfoil Propulsion at Low Reynolds Numbers T2 - MEGAFLOW - Numerical Flow Simulation for Aircraft Design KW - Lift Curve KW - Chord Length KW - Pitch Motion KW - Laminar Separation Bubble KW - Combine Motion Y1 - 2005 SN - 978-3-540-24383-0 U6 - https://doi.org/10.1007/3-540-32382-1_21 VL - NNFM, 89 SP - 299 EP - 313 PB - Springer-Verlag CY - Berlin, Heidelberg ER - TY - CHAP A1 - Willingham, Lee A1 - Gerard, Yun A1 - Yerichuk, Deanna A1 - de Bánffy-Hall, Alicia ED - Camlin, Dave T1 - Community Music in Higher Education : Addressing Excellence (Standards) and Inclusivity (Accessibility) T2 - Proceedings of the XV International Seminar of the ISME Commission on Community Music Activity Tbilisi State University, Tbilisi, Georgia 10th-14th Y1 - 2018 UR - https://www.isme.org/sites/default/files/documents/ISME Commission on XV Proceedings 2018.pdf SP - 262 EP - 297 CY - Tbilisi, Georgia ER - TY - RPRT A1 - Williams, Erica J. T1 - Marketing Communications in English KW - Marketing Y1 - 2016 PB - Wayzgoose Press CY - Eugene ER - TY - CHAP A1 - Willers, Oliver A1 - Curcic, Michael A1 - Bosch, Robert ED - Thomas, Otto T1 - Fingerprinting MEMS Gyroscopes T2 - 11th Smart Systems Integration Conference 2017 International Conference and Exhibition on Integration Issues of Miniaturized Systems Cork, Ireland 8-9 March 2017 Y1 - 2017 SN - 978-1-5108-4478-0 PB - Curran Associates, Inc. ER - TY - JOUR A1 - Wille, Hagen A1 - Ruess, Martin A1 - Rank, Ernst A1 - Yosibash, Zohar T1 - Uncertainty quantification for personalized analyses of human proximal femurs JF - Journal of Biomechanics N2 - Computational models for the personalized analysis of human femurs contain uncertainties in bone material properties and loads, which affect the simulation results. To quantify the influence we developed a probabilistic framework based on polynomial chaos (PC) that propagates stochastic input variables through any computational model. We considered a stochastic E-ρ relationship and a stochastic hip contact force, representing realistic variability of experimental data. Their influence on the prediction of principal strains (ϵ1 and ϵ3) was quantified for one human proximal femur, including sensitivity and reliability analysis. Large variabilities in the principal strain predictions were found in the cortical shell of the femoral neck, with coefficients of variation of ≈40%. Between 60 and 80% of the variance in ϵ1 and ϵ3 are attributable to the uncertainty in the E-ρ relationship, while ≈10% are caused by the load magnitude and 5-30% by the load direction. Principal strain directions were unaffected by material and loading uncertainties. The antero-superior and medial inferior sides of the neck exhibited the largest probabilities for tensile and compression failure, however all were very small (pf<0.001). In summary, uncertainty quantification with PC has been demonstrated to efficiently and accurately describe the influence of very different stochastic inputs, which increases the credibility and explanatory power of personalized analyses of human proximal femurs. Y1 - 2016 UR - http://www.ncbi.nlm.nih.gov/pubmed/26873282 U6 - https://doi.org/10.1016/j.jbiomech.2015.11.013 SN - 0021-9290 VL - 49 IS - 4 SP - 520 EP - 527 PB - Elsevier ER - TY - CHAP A1 - Wilczek, Tobias A1 - Steffens, Jochen A1 - Weinzierl, Stefan ED - Lautenbach, Margriet ED - Witew, Ingo B. ED - de Vries, Diemer ED - Hornikx, Maarten T1 - Room acoustics, soundscapes and customer satisfaction in restaurants – a field study T2 - Proceedings of the International Symposium on Room Acoustics (ISRA) 2019, Amsterdam, Netherlands. Y1 - 2019 SN - 978-90-9032895-9 U6 - https://doi.org/10.18154/RWTH-CONV-240148 SP - 854 EP - 857 PB - Nederlands Akoestisch Genootschap CY - Heerde ER - TY - JOUR A1 - Wiesmann, Thomas A1 - Youn Suh, Sung A1 - Kaluza, Stefan A1 - Lohmann, Heiko A1 - Zeidler‐Fandrich, Barbara T1 - Catalytic Oxygen Removal from Synthetic Coke Oven Gas: A Comparison of Sulfided CoMo/γ‐Al 2 O 3 and NiMo/γ‐Al 2 O 3 Catalysts with Pt/γ‐Al 2 O 3 as Benchmark Catalyst JF - Chemie Ingenieur Technik KW - DEAL Y1 - 2020 U6 - https://doi.org/10.1002/cite.202000067 N1 - The research project is funded by the Federal Ministry of Education and Research (Bundesministerium für Bildung und Forschung, BMBF, Verbundvorhaben Carbon2Chem®, FKZ: 03EK3040D). Open access funding enabled and organized by Projekt DEAL VL - 92 IS - 10 SP - 1533 EP - 1541 PB - Wiley ER - TY - JOUR A1 - Wiesmann, Thomas A1 - Hamel, Christian A1 - Kaluza, Stefan T1 - Techniques to Remove Traces of Oxygen by Catalytic Conversion from Gas Mixtures JF - Chemie Ingenieur Technik Y1 - 2018 U6 - https://doi.org/10.1002/cite.201800022 SN - 1522-2640 VL - 90 IS - 10 SP - 1446 EP - 1452 PB - Wiley ER - TY - JOUR A1 - Westkämper, Engelbert A1 - Niemann, Jörg A1 - Stolz, M. T1 - Digital information—potentials for TeleX applications JF - Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Y1 - 2002 U6 - https://doi.org/10.1243/0954405021520319 SN - 2041-2975 SN - 0954-4054 VL - 216 IS - 5 SP - 801 EP - 808 PB - sage journals ER - TY - JOUR A1 - Westkämper, Engelbert A1 - Niemann, Jörg A1 - Dauensteiner, A. T1 - Economic and ecological aspects in product life cycle evaluation JF - Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Y1 - 2001 U6 - https://doi.org/10.1243/0954405011518601 SN - 2041-2975 VL - 215 IS - 5 SP - 673 EP - 681 PB - sage journals ER - TY - CHAP A1 - Werfel, Fabian A1 - Wiche, Roman A1 - Feitsch, Jochen A1 - Geiger, Christian ED - Seigneur, Jean-Marc ED - Hernandez-Munoz, Jose M. ED - McCullagh, Paul ED - Schmidt, Albrecht ED - Terada, Tsutomu ED - Woo, Woontack ED - Mistry, Pranav T1 - Empathizing Audiovisual Sense Impairments T2 - Proceedings of the 7th Augmented Human International Conference 2016, Geneva, 25.02.2016-27.02.2016 Y1 - 2016 UR - https://dl.acm.org/doi/proceedings/10.1145/2875194 SN - 9781450336802 U6 - https://doi.org/10.1145/2875194.2875226 SP - 1 EP - 8 PB - ACM CY - New York ER - TY - CHAP A1 - Wendland, André A1 - Bumann, Marc A1 - Martin, Shane A1 - Niemann, Jörg A1 - Bosman, Stephen ED - Yilmaz, Murat ED - Niemann, Jörg ED - Clarke, Paul ED - Messnarz, Richard T1 - Optimizing System Design Through Thermal Analysis with Cubesatellite as Case Study T2 - Systems, Software and Services Process Improvement Y1 - 2020 SN - 978-3-030-56440-7 U6 - https://doi.org/10.1007/978-3-030-56441-4_30 SP - 408 EP - 420 PB - Springer Nature Switzerland CY - Cham ER - TY - GEN A1 - Weinzierl, Stefan A1 - Vorländer, Michael A1 - Ackermann, David A1 - Behler, Gottfried A1 - Brinkmann, Fabian A1 - von Coler, Henrik A1 - Detzner, Erik A1 - Krämer, Johannes A1 - Lindau, Alexander A1 - Pollow, Martin A1 - Schulz, Frank A1 - Shabtai, Noam R. T1 - A Database of Anechoic Microphone Array Measurements of Musical Instruments KW - directivities KW - musical instruments KW - spectral audio features Y1 - 2024 U6 - https://doi.org/10.14279/depositonce-19858 N1 - Forschungsgruppe | FOR 1557 - SEACEN VL - Version 3 PB - Technische Universität Berlin, RWTH Aachen University ER - TY - CHAP A1 - Weiler, Tim A1 - Struzek, David A1 - Müller, Claudia A1 - Huldtgren, Alina A1 - Klapperich, Holger A1 - Grosskopp, Sabrina A1 - Fischer, Florian A1 - Osterheider, Angela A1 - Gaertner, Wanda T1 - 2nd International Workshop on Co-Creation of Hybrid Interactive Systems for Healthcare: Integrating Interdisciplinary and Interprofessional Perspectives in Healthcare Innovation T2 - Mensch und Computer 2024 - Workshopband N2 - Recent advancements in data science and AI-driven healthcare technologies are bringing up novel opportunities for innovations, such as personalized medicine, self diagnostic tools for everyday use, or hybrid healthcare models. However, the development of these technologies often overlooks the perspectives of patients and their families and socio-cultural surroundings, posing significant social, technological, and ethical challenges related to data bias, empowerment or surveillance, respectively. Bringing together interdisciplinary, interprofessional, and intersectoral collaboration in a systematic way seems to be a crucial element for adressing these issues and ensuring the meaningful integration of sensitive data and AI technologies into patient-centred healthcare arrangements. In this workshop, researchers and practitioners from diverse related disciplines, including HCI, AI, social and cultural sciences, healthcare, gerontology, etc., are invited to share their case studies on innovative health technologies and medical AI. Drawing from contextual best practices, as well as challenges and failures, the workshop organizers aim to collectively devise a systematic approach for co-designing and implementing telemedical innovations in real-world healthcare settings. KW - Künstliche Intelligenz KW - Data Science KW - Gesundheitswesen KW - Mensch-Maschine-Kommunikation KW - Telemedizin KW - Individualisierte Medizin KW - Human-centered Design Y1 - 2024 U6 - https://doi.org/10.18420/muc2024-mci-ws03-120 PB - Gesellschaft für Informatik e.V. ER - TY - JOUR A1 - Weigand, Markus A1 - Van Waeyenberge, Bartel A1 - Vansteenkiste, Arne A1 - Curcic, Michael A1 - Sackmann, Vitalij A1 - Stoll, Hermann A1 - Tyliszczak, Tolek A1 - Kaznatcheev, Konstantine A1 - Bertwistle, Drew A1 - Woltersdorf, Georg A1 - Back, Christian H. A1 - Schütz, Gisela T1 - Vortex Core Switching by Coherent Excitation with Single In-Plane Magnetic Field Pulses JF - Physical Review Letters Y1 - 2009 U6 - https://doi.org/10.1103/PhysRevLett.102.077201 SN - 0031-9007 VL - 102 IS - 7 PB - American Physical Society ER - TY - JOUR A1 - Weide, Philipp A1 - Schulz, Katharina A1 - Kaluza, Stefan A1 - Rohe, Markus A1 - Beranek, Radim A1 - Muhler, Martin T1 - Controlling the Photocorrosion of Zinc Sulfide Nanoparticles in Water by Doping with Chloride and Cobalt Ions JF - Langmuir Y1 - 2016 UR - http://www.ncbi.nlm.nih.gov/pubmed/27934521 U6 - https://doi.org/10.1021/acs.langmuir.6b03385 SN - 1520-5827 VL - 32 IS - 48 SP - 12641 EP - 12649 PB - ACS Publ. ER - TY - CHAP A1 - Weidauer, Derk A1 - Eickel, Karl-Heinz A1 - Lahmann, Wilhelm A1 - Nikowa, Ljuba A1 - Ulbricht, Matthias A1 - Weber, Konradin A1 - Weitkamp, Claus A1 - Wolf, Jean-Pierre ED - Singh, Upendra N. ED - Syed, Ismail ED - Geary K., Schwemmer T1 - Standardization of DAS lidar measurements T2 - Nineteenth International Laser RadarConference KW - Luftreinhaltung KW - Lidar KW - Messtechnik Y1 - 1998 SP - 771 PB - National Aeronautics and Space Administration CY - Hampton, VA ER - TY - JOUR A1 - Weber, Stephan A1 - Weber, Konradin T1 - Coupling of urban street canyon and backyard particle concentrations JF - Meteorologische Zeitschrift KW - Luftreinhaltung Y1 - 2008 U6 - https://doi.org/10.1127/0941-2948/2008/0286 SN - 0941-2948 VL - 17 IS - 3 SP - 251 EP - 261 PB - Schweizerbart ER - TY - JOUR A1 - Weber, Stephan A1 - Kuttler, Wilhelm A1 - Weber, Konradin T1 - Flow characteristics and particle mass and number concentration variability within a busy urban street canyon JF - Atmospheric Environment KW - Luftreinhaltung Y1 - 2006 U6 - https://doi.org/10.1016/j.atmosenv.2006.07.002 VL - 40 IS - 39 SP - 7565 EP - 7578 PB - Elsevier ER - TY - CHAP A1 - Weber, Konradin A1 - Weidemann, Johannes A1 - van Haren, Guenther A1 - Lamp, Torsten ED - Simpson, Orman A. T1 - Open-path FTIR measurements at an urban area in Germany T2 - SPIE Proceedings, Optical Sensing for Environmental and Process Monitoring KW - FT-IR-Spektroskopie KW - Luftreinhaltung KW - Messtechnik Y1 - 1995 U6 - https://doi.org/10.1117/12.210818 SN - 0277-786X VL - 2365 SP - 37 EP - 46 PB - SPIE ER - TY - CHAP A1 - Weber, Konradin A1 - Vogel, Andreas A1 - Reichardt, Roland A1 - Zimmermann, Thomas ED - Altawell, Najib ED - Konstantin, Volkov ED - Cristina, Matos ED - Fernandez de Arroyabe, Pablo T1 - Research aircraft flight for gas leakage investigation at the Elgin wellhead gas platform in the North Sea – initial results T2 - Recent Researches in Environmental and Geological Sciences KW - Luftreinhaltung KW - Forschungsflugzeug KW - Messtechnik KW - Bohrinsel KW - Leckage KW - Erdgas Y1 - 2012 SP - 240 EP - 243 PB - WSEAS ER - TY - CHAP A1 - Weber, Konradin A1 - Vogel, Andreas A1 - Fischer, Christian A1 - van Haren, Günther A1 - Pohl, Tobias ED - Singh, Upendra N. ED - Pappalardo, Gelsomina T1 - Airborne measurements of the Eyjafjallajökull volcanic ash plume over northwestern Germany with a light aircraft and an optical particle counter: first results T2 - Lidar technologies, techniques, and measurements for atmospheric remote sensing VI : 20 - 21 September 2010, Toulouse, Franc KW - Luftreinhaltung Y1 - 2010 SN - 978-0-8194-8349-2 U6 - https://doi.org/10.1117/12.869629 SN - 0277-786X VL - 7832 IS - 7832OP PB - SPIE CY - Bellingham, Wash. ER - TY - CHAP A1 - Weber, Konradin A1 - Thielke, Jan A1 - Fischer, Christian T1 - Evaluation of selected physical parameters measured with smartphones T2 - Verhandlungen der Deutschen Physikalische Gesellschaft e.V. KW - Messtechnik KW - Smartphone KW - Luftreinhaltung Y1 - 2019 UR - https://web.archive.org/web/20250313105536/https://www.dpg-verhandlungen.de/year/2019/conference/aachen/part/dd/session/2/contribution/46 N1 - Posterabstract PB - Deutsche Physikalische Gesellschaft e.V. CY - Bad Honnef ER - TY - CHAP A1 - Weber, Konradin A1 - Scharifi, Emad A1 - Fischer, Christian A1 - Pohl, Tobias A1 - Lange, Martin A1 - Böhlke, Christoph T1 - Mobile measurements of air pollutants with an instrumented car in populated areas T2 - Geophysical Research Abstracts: EGU General Assembly 2017 N2 - Detailed mobile measurement of gases and fine particulate matter has been reported in the literature to be suitable to exhibit the air pollutants concentration in populated areas. This concentration is linked to the increase of number of cars, construction areas, industries and other emission sources. However, fixed measurement stations, mostly operated by environmental agencies, are limited in numbers and cannot cover a large area in monitoring. For this reason, to overcome this drawback, mobile measurements of the variability of gases (such as O3, NO, NO2) and particulate matter concentration were carried out during this study using an instrumented car. This car was able to deliver measurement results of all these compounds in a large area. The experimental results in this work demonstrate a large spatial variability of gases and fine particulate matters mainly depended on the traffic density and the location. These effects are especially obvious in the city core and the high traffic roads. In terms of fine particulate matter, this becomes evident for PM 10 and PM 2.5, where the mass and number concentration increases with arriving these zones. KW - Luftreinhaltung KW - Messtechnik KW - Feinstaub KW - Luftverschmutzung KW - Straßenverkehr Y1 - 2017 UR - https://web.archive.org/web/20240513165039/https://meetingorganizer.copernicus.org/EGU2017/EGU2017-16575.pdf VL - 19 PB - Copernicus CY - Göttingen ER - TY - CHAP A1 - Weber, Konradin A1 - Scharifi, Emad A1 - Böhlke, Christoph ED - Bulucea, Aida T1 - Mobile measurements of the horizontal variation of fine particulate matter in the state of North Rhine Westphalia in Germany – a case study T2 - Recent Advances on Environmental and Life Science N2 - Fine particulate matter is well known for its adverse health effects for the population. It is still one of the major problems of air pollution in Germany. The limit values of fine particulate matter PM10 are often exceeded in bigger German cities. Therefore the level of fine particulate matter and other air pollutants are routinely monitored at single hot spots in the cities by measurement stations of the environmental state agencies. However, it is of high interest, what levels of concentrations of fine particulate matter are to be found in those areas, where no measurement stations are placed. Moreover, it is important to know, how strong exceedings of fine particulate matter concentrations can be influenced by meteorological conditions. In this paper fine particulate matter concentrations are measured with a car, which was equipped with measurement systems for fine particulate matter and which was driving through industrial and rural areas of the state North Rhine Westphalia in Germany. By this means it was possible to measure coarse and fine fractions of particulate matter continuously during driving. In this way the horizontal variation of fine particulate matter could be investigated throughout the state. The measurements comprised dust concentrations of the fractions PM10 (coarse), PM2.5 (more fine) and PM1(very fine), which are addressed within the European environmental legislation. Moreover, every second during driving the full size distribution of particles between 250 nm and 32 μm diameter was measured. Therefore it could be investigated, at what places more bigger or more smaller particles were present under specific meteorological conditions. The mobile car measurements were performed as a case study in a situation with a strong meteorological inversion layer. The mobile measurements of the horizontal variation of fine particulate matter in industrial and rural areas are compared with model prediction calculations. Moreover, using backward trajectories a source appointment of the fine particulate matter could be performed. KW - Luftreinhaltung KW - Feinstaub KW - Luftverschmutzung KW - Luftqualität KW - Messtechnik Y1 - 2015 SN - 978-1-61804-332-0 SN - 2227-4359 VL - Energy, Environmental and Structural Engineering Series 40 SP - 22 EP - 27 PB - WSEAS ER - TY - CHAP A1 - Weber, Konradin A1 - Reichardt, R. A1 - Fischer, Christian A1 - Moser, H. M. A1 - Eliasson, Jonas ED - Jha, Manoj K. ED - Lazard, Myriam ED - Zaharim, Azami ED - Sopian, Kamaruzzaman T1 - Computational Visualization of Volcanic Ash Plume Concentrations Measured by light Aircrafts over Germany and Iceland during the Recent Eruptions of the Volcanoes Eyjafjallajökull and Grimsvötn T2 - Recent advances in Fluid Mechanics, Heat & Mass Transfer, Biology and Ecology KW - Luftreinhaltung KW - Vulkanasche KW - Visualisierung KW - Eyjafjallajökull KW - Atmosphärisches Aerosol Y1 - 2012 SN - 978-1-61804-065-7 SP - 236 EP - 240 PB - WSEAS ER - TY - CHAP A1 - Weber, Konradin A1 - Pohl, Tobias A1 - Fischer, Christian A1 - Lange, Martin A1 - Böhlke, Christoph ED - Valeri, Mladenov T1 - Determination of a Vertical Profile of Black Carbon by a Combined Application of a Light Research Aircraft and a Quadcopter Unmanned Aerial Vehicle – A Case Study Using an Airborne Ultraportable Micro-Aethalometer for Black Carbon Measurements at a Rural Site in Germany T2 - Recent Researches in Electrical and Computer Engineering KW - Luftreinhaltung KW - Messtechnik KW - Atmosphärisches Aerosol KW - Ruß Y1 - 2015 SN - 978-1-61804-315-3 SN - 1790-5117 VL - Recent Advances in Electrical Engineering Series 49 SP - 13 EP - 18 PB - WSEAS ER - TY - CHAP A1 - Weber, Konradin A1 - Kramer, Tim A1 - Fischer, Christian A1 - Pohl, Tobias A1 - Schulenberg, Malte A1 - Heweling, Georg A1 - Böhlke, Christoph T1 - Testing and evaluation of low-cost sensors for fine particulate matter PM10 and PM2.5 T2 - Geophysical Research Abstracts: EGU General Assembly 2018 N2 - It is well known from medical studies that fine particulate matter has adverse effects to human health. However, exceeding of limit values for fine particulate matter PM10 and PM2.5 is still a problem in major German cities. Therefore, fine particulate matter is monitored in Germany by environmental state agencies at fixed stations with certified instruments. These certified instruments are able to deliver reliable and high quality results. However, because of the costs of these certified instruments and the maintenance efforts, only few measurements stations are placed in the cities at places, which are regarded as representative for the air pollution. On the other hand, it is of interest to know the concentration of fine particulate matter in areas and at places, which are not covered by the fixed measurement stations of the environmental state agencies. In this situation citizen science projects started in Germany using low cost sensors for fine particulate matter. In principle, with these low cost sensors citizens could measure fine particulate matter at places and in situations of their interests. However, at that point the question of reliability of the low cost sensor data arises. Therefore the Duesseldorf University of Applied Sciences (HSD) in Germany started a project for the testing and evaluation of low-cost sensors. For this reason 20 low-cost sensor units have been built up based on the SDS 011 sensor of Nova Fitness Inc. within the Laboratory for Environmental Measurement Techniques at HSD. The sensor measurement data can be transferred into a network and can be visualized on a digital map. This testing and evaluation at HSD of the low-cost sensors comprised: • Short term and long term comparison studies within the laboratory and at different urban sites with a certifiedwide range aerosol measurement system (Grimm WRAS). • Short term and long term comparison studies within the laboratory and at different urban sites with mid-cost sensors (Alphasense AN2). • Intercomparison testing and evaluation of sensors of the same production charge. • Intercomparison testing and evaluation of sensors of different production charges. • Testing and evaluation of the sensors at different meteorological conditions. The results of this testing and evaluation will be presented at the conference. Moreover, the potential of additional applications for low-cost sensors, e.g. for mobile measurements (multicopter UAS, bicycles, pedestrians) or for the validation of air pollution models, will be discussed KW - Luftreinhaltung KW - Messtechnik KW - Sensor KW - Feinstaub Y1 - 2018 UR - https://web.archive.org/web/20240706113110/https://meetingorganizer.copernicus.org/EGU2018/EGU2018-11298-1.pdf N1 - Vortragsabstract VL - 20 PB - Copernicus CY - Göttingen ER - TY - CHAP A1 - Weber, Konradin A1 - Kramer, Tim A1 - Fischer, Christian A1 - Pohl, Tobias A1 - Böhlke, Christoph T1 - Evaluation of low cost and mid cost sensors for fine particulate matter at urban sites T2 - Geophysical Research Abstracts: EGU General Assembly 2019 N2 - High ambient air concentrations of fine particulate matter are a problem in many European cities, especially in traffic loaded street canyons. Therefore, the introduction of traffic restricted or traffic reduced areas is discussed as a countermeasure in several towns. However, at that point it is not always clear, in what extent the restriction of traffic in presently overloaded streets causes the exceeding of limit values in other areas of the town after the redirection of the traffic. Presently this cannot be recorded appropriately, when the concentrations of fine particulate matter are monitored only at rarely distributed single points by the official measurement systems of the environmental state agencies. On the other hand, meanwhile there are low cost and mid cost sensors for the measurement of fine particulate matter available, which enable the parallel monitoring with many measurement systems in an extended area of the town. By this way, the effect of traffic restrictions on the distribution of fine particulate matter in the city can potentially be observed. However, at this point the question arises, how reliable the results are, which are delivered by the low and mid cost sensors for fine particulate matter. For this reason different low cost and mid cost sensors have been evaluated for this study and intercompared with certified reference measurement systems for fine particulate matter. The study comprised the sensors SDS011 (Nova Fitness), which is in use already for several citizen science projects in Germany, SPS30 (Sensirion), OPC-R1 (Alphasense), OPC-N2 (Alphasense) and OPC-N3 (Alphasense). This study was performed at urban sites in Düsseldorf (Germany) for several weeks and covered different traffic loads and different meteorological situations, in order to get representative results. As atmospheric humidity can influence the measurement results, the humidity was measured in parallel to the fine particulate matter. It could be shown that the validity of the measurement results of fine particulate matter could be improved, when the parallel readings of the humidity were taken into account. KW - Luftreinhaltung KW - Messtechnik KW - Sensor KW - Feinstaub Y1 - 2019 UR - https://web.archive.org/web/20240421022835/https://meetingorganizer.copernicus.org/EGU2019/EGU2019-15021.pdf N1 - Vortragsabstract VL - 21 PB - Copernicus CY - Göttingen ER - TY - CHAP A1 - Weber, Konradin A1 - Kramer, Tim A1 - Fischer, Christian A1 - Pohl, Tobias A1 - Böhlke, Christoph T1 - Application and Feld-Testing of Different Low Cost Sensors for Particulate Matter T2 - European Aerosol Conference 2019, 25.-30. August 2019, Gothenburg, Sweden KW - Luftreinhaltung KW - Messtechnik KW - Sensor KW - Teilchen Y1 - 2019 UR - https://www5.shocklogic.com/scripts/jmevent/programme.php?Client_Id=%27KONGRESS%27&Project_Id=%2719371%27&System_Id=1# ER - TY - CHAP A1 - Weber, Konradin A1 - Heweling, Georg A1 - Fischer, Christian A1 - Lange, Martin A1 - Böhlke, Christoph T1 - Octocopter investigation of the vertical and horizontal variation of ultrafine particles, fine particulate matter and soot in the traffic plume emitted from a Rhine river bridge in Duesseldorf, Germany T2 - Geophysical Research Abstracts: EGU General Assembly 2017 N2 - For this study an octocopter UAV was used for carrying an ultrafine (UFP) particle monitor, an optical particle counter (OPC) and a micro aethalometer. The UFP-monitor, based on electrical charging of UFPs, was able to count the number of UFPs and give an estimated mean diameter of the measured particles. The OPC, based on the particle induced light scattering of a laser beam, was able to detect aerosols in a size range of about 250 nm to 32 μm in 31 bins. The micro aethalometer measured the soot by optical attenuation of a light beam which is caused by carbon particulate matter. The octocopter with a lift off weight by 10.5 kg was especially designed and constructed at the University of Applied Sciences, Duesseldorf, for the measurement of air pollutants. It was equipped with eight 900 W electric engines and a pixhawk flight control. Technically this octocopter was able to climb up to altitudes of up to 2 km AGL. However, during this study an altitude range of several 10 meters was used. During this study about 60 octocopter flights were performed. The flights clearly revealed a plume of UFPs coming from the traffic on the bridge. This result was confirmed by various upwind and downwind measurements with the octocopter in the region of the bridge. KW - Luftreinhaltung KW - Messtechnik KW - Flugkörper KW - Feinstaub KW - Luftverschmutzung KW - Luftqualität Y1 - 2017 UR - https://web.archive.org/web/20240514060803/https://meetingorganizer.copernicus.org/EGU2017/EGU2017-14976.pdf VL - 19 PB - Copernicus CY - Göttingen ER - TY - CHAP A1 - Weber, Konradin A1 - Fischer, Christian A1 - Vogel, Andreas A1 - Pohl, Tobias A1 - Böhlke, Christoph A1 - Lau, Hendrik A1 - Eliasson, Jonas A1 - Palsson, Thorgeir ED - Mladenov, Valeri ED - Tasho, Tashev ED - Hui, Wang ED - Ivan, Kralov ED - Sergey, Stankevich ED - Pelin, Yildiz ED - Jon, Burley T1 - First results of an airborne release of volcanic ash for testing of volcanic ash plume measurement instruments T2 - Recent Advances in Energy and Environmental Management KW - Luftreinhaltung KW - Vulkanasche KW - Messtechnik KW - Forschungsflugzeug Y1 - 2013 VL - Energy, Environmental and Structural Engineering Series 13 SP - 169 EP - 172 PB - WSEAS ER - TY - CHAP A1 - Weber, Konradin A1 - Fischer, Christian A1 - van Haren, Günther A1 - Krause, Horst A1 - Bunte, Gudrun A1 - Schweikert, Wenka A1 - Härdle, Thomas ED - Schubert, Hiltmar ED - Rimski-Korsakov, A. T1 - Stand-Off Detection of Explosives of Suicide Bombers by Means of Open-Path FTIR Spectroscopy T2 - Stand-Off Detection of Suicide Bombers and Mobile Subjects KW - Luftreinhaltung Y1 - 2006 SN - 9781402051579 U6 - https://doi.org/10.1007/1-4020-5159-X_16 SP - 135 EP - 143 PB - Springer Netherlands CY - Dordrecht ER - TY - CHAP A1 - Weber, Konradin A1 - Fischer, Christian A1 - Lange, Martin A1 - Schulz, Uwe A1 - Naraparaju, Ravisankar A1 - Kramer, Dietmar T1 - Design and construction of a testbed for the application of real volcanic ash from the Eyjafjallajökull and Grimsvötn eruptions to microgas turbines T2 - Geophysical Research Abstracts: EGU General Assembly 2017 N2 - It is well known that volcanic ash clouds emitted from erupting volcanoes pose a considerable threat to the aviation. The volcanic ash particles can damage the turbine blades and their thermal barrier coatings as well as the bearings of the turbine. For a detailed investigation of this damaging effect a testbed was designed and constructed, which allowed to study the damaging effects of real volcanic ash to an especially for these investigations modified microgas turbine. The use of this microgas turbine had the advantage that it delivers near reality conditions, using kerosene and operating at similar temperatures as big turbines, but at a very cost effective level. The testbed consisted out of a disperser for the real volcanic ash and all the equipment needed to control the micro gas turbine. Moreover, in front and behind the microgas turbine the concentration and the distribution of the volcanic ash were measured online by optical particle counters (OPCs). The particle concentration and size distribution of the volcanic ash particles in the intake in front of the microgas turbine was measured by an optical particle counter (OPC) combined with an isokinetic intake. Behind the microgas turbine in the exhaust gas additionally to the measurement with a second OPC ash particles were caught with an impactor, in order to enable the later analysis with an electron microscope concerning the morphology to verify possible melting processes of the ash particles. This testbed is of high importance as it allows detailed investigations of the impact of volcanic ash to jet turbines and appropriate countermeasures. KW - Luftreinhaltung KW - Vulkanismus KW - Mikroturbine KW - Messtechnik KW - Vulkanasche Y1 - 2017 UR - https://web.archive.org/web/20220725214516/https://meetingorganizer.copernicus.org/EGU2017/EGU2017-13737.pdf VL - 19 PB - Copernicus CY - Göttingen ER - TY - CHAP A1 - Weber, Konradin A1 - Fischer, Christian A1 - Lange, Martin A1 - Pohl, Tobias A1 - Böhlke, Christoph A1 - Wagner, Frank A1 - Mattis, Ina A1 - Flentje, Harald A1 - Sturm, Klaus A1 - Barth, Joachim A1 - Steinkopff, Thomas A1 - Vogel, Andreas T1 - Aircraft measurements compared with ceilometer measurements during a sahara dust period in Germany T2 - Geophysical Research Abstracts: EGU General Assembly 2015 N2 - A significant Sahara dust event took place at the beginning of April 2014 over large areas of Germany and Europe. The German Weather Service (DWD) detected and monitored the expansion and propagation of this dust cloud with a ceilometer network of more than 50 ceilometers. Moreover, these ceilometers were also able to track the altitude of the dust cloud at the positions of the ceilometers. Additionally, aircraft measurements over Germany and France were performed with two aircraft by the Duesseldorf University of Applied Sciences. These aircraft were equipped with optical particle counters (OPC) and were able to measure the particle size distribution within the Sahara dust cloud and as a result of this to calculate the particle mass concentration of the dust. The ceilometer measurements and the aircraft measurements complemented each other: whereas the ceilometers gave continuous information about the Sahara dust cloud at the ceilometer positions, the aircraft measurements delivered interpolating results between the ceilometer positions. Moreover, at several ceilometer positions intercomparison flights were performed by spiraling with the aircraft up or down around the ceilometer laser beam. This gave the unique possibility for comparing the remote sensing results of the ceilometers with the in-situ measurements of the aircraft. This study shows that a significant high amount of Saharan dust particles was transported over Germany during a several days long episode. Furthermore, the intercomparison study between the German ceilometer network and aircraft measurements results shows a good agreement. A combination of these techniques could help to detect the vertical and horizontal distribution of the dust cloud and additionally the particle mass concentration. KW - Luftreinhaltung KW - Deutscher Wetterdienst KW - Forschungsflugzeug KW - Messtechnik KW - Atmosphärisches Aerosol KW - Saharastaub Y1 - 2015 UR - https://web.archive.org/web/20250314100317/https://meetingorganizer.copernicus.org/EGU2015/EGU2015-9776.pdf N1 - Vortragsabstract VL - 17 PB - Copernicus CY - Göttingen ER - TY - CHAP A1 - Weber, Konradin A1 - Fischer, Christian A1 - Amend, Detlef T1 - A new development of drop-sondes for the measurement of CO2-concentrations at extended volcanic areas BT - 6th Workshop on Physics of Volcanoes T2 - Physics of Volcanoes 2020 N2 - One of the main compounds emitted by volcanoes or volcanic fields is CO2. This is not only emitted from localized craters, but can emerge as distributed and fugitive emissions on extended volcanic areas. In this situation it is of interest to explore the distribution and horizontal concentration profiles of the CO2-emissions. For this purpose new drop-sondes for sensor measurements of CO2 emissions are under development at the Duesseldorf University of Applied Sciences. These drop-sondes are designed to be dropped from aircraft or drones over volcanic areas in order to map the distributed CO2 concentrations over longer times in an unattended way. They are very lightweight and cheap, so that a large number of drop-sondes might be deployed even over remote areas or regions with difficult access. The data are transmitted with GSM broadcasting and can be visualized on a geographical map. The drop-sondes use an NDIR CO2 sensor as a base for the measurement unit. Additionally to CO2 the atmospheric pressure, temperature and humidity are measured. The sensor unit is mounted in a special shock absorbing housing, which is designed to absorb impacts from the touch down after dropping of the sensor and is able to resist even adverse weather conditions. First measurement results and more details of the design of the sensor unit will be presented in this contribution KW - Sonde KW - Kohlendioxidemission KW - Messtechnik KW - Vulkanismus KW - Luftreinhaltung Y1 - 2020 UR - https://web.archive.org/web/20240702210730/https://www.conferences.uni-hamburg.de/event/104/attachments/86/133/PoV_VI_BookOfAbstracts.pdf N1 - Vortragsabstract SP - 32 ER - TY - CHAP A1 - Weber, Konradin A1 - Eliasson, Jonas A1 - Arnason, Gylfi A1 - Rögnvaldsson, Ólafur A1 - Thorsteinsson, Throstur A1 - Palsson, Thorgeir A1 - Böhlke, Christoph A1 - Fischer, Christian A1 - Smith, Paul A1 - Jones, Roderic L. A1 - Tirpitz, Lukas A1 - Platt, Ulrich T1 - Airborne Investigations and WRF - Model Calculations of the Bardarbunga-Holuhraun Eruption Plume T2 - Geophysical Research Abstracts: EGU General Assembly 2015 N2 - The eruption in Holuhraun is the largest producer of lava and gas in Iceland since 1783. The Volcanic Ash Research (VAR) group organized an airborne measurement campaign including 10 flights, where emissions of SO2 and ash concentrations were measured at the source and at the far plume. The highest SO2 concentration at the source was nearly up to 100 mg/m3. This is an extremely high value, compared to other airborne campaigns and a contamination considered to cause serious illness by the Icelandic Directorate of Health. Volcanic ash consisted of very fine particles, but the concentration was low when compared to other recent eruptions. Measurements of the far plume showed that scavenging is very active. The dispersion was successfully modeled with the Weather Research and Foreast (WRF-chem) model and analysis using the model showed that a large amount of the sulphur was precipitated in the Icelandic highlands. KW - Luftreinhaltung KW - Vulkanismus KW - Vulkanasche KW - Messtechnik KW - Atmosphärisches Aerosol KW - Schwefeldioxid Y1 - 2015 UR - https://web.archive.org/web/20240719170649/https://meetingorganizer.copernicus.org/EGU2015/EGU2015-10846-1.pdf N1 - Vortragsabstract VL - 17 PB - Copernicus CY - Göttingen ER - TY - JOUR A1 - Weber, Konradin A1 - Eliasson, J. A1 - Vogel, A. A1 - Fischer, C. A1 - Pohl, T. A1 - van Haren, G. A1 - Meier, M. A1 - Grobéty, B. A1 - Dahmann, D. T1 - Airborne in-situ investigations of the Eyjafjallajökull volcanic ash plume on Iceland and over north-western Germany with light aircrafts and optical particle counters JF - Atmospheric Environment KW - Luftreinhaltung Y1 - 2012 U6 - https://doi.org/10.1016/j.atmosenv.2011.10.030 SN - 1352-2310 VL - 48 SP - 9 EP - 21 PB - Elsevier ER - TY - CHAP A1 - Weber, Konradin A1 - Eickel, Karl-Heinz ED - Cecchi, Giovanna ED - Lamp, Torsten ED - Reuter, Rainer ED - Weber, Konradin T1 - Standardization of open-path FTIR measurements in Germany T2 - SPIE Proceedings, Remote Sensing of Vegetation and Water, and Standardization of Remote Sensing Methods KW - Luftreinhaltung KW - FT-IR-Spektroskopie KW - Messtechnik Y1 - 1997 U6 - https://doi.org/10.1117/12.274753 SN - 0277-786X VL - 3107 SP - 174 EP - 176 PB - SPIE ER - TY - JOUR A1 - Wannek, C. A1 - Nehr, Sascha A1 - Vahlenkamp, M. A1 - Mergel, J. A1 - Stolten, D. T1 - Pseudo-half-cell measurements on symmetrical catalyst-coated membranes and their relevance for optimizing DMFC anodes JF - Journal of Applied Electrochemistry KW - Luftreinhaltung Y1 - 2009 U6 - https://doi.org/10.1007/s10800-009-9960-9 SN - 0021-891X VL - 40 IS - 1 SP - 29 EP - 38 PB - Springer Nature ER - TY - CHAP A1 - Wacht, Anika A1 - Kaluza, Stefan A1 - Fleiger, Philipp ED - Leipzig, Konrad von ED - Sacks, Natasha ED - Mc Clelland, Michelle T1 - Carbon Capture and Utilization in Cement Industry—Aspects of the Production of E-Fuels by Upcycling Carbon Dioxide T2 - Smart, Sustainable Manufacturing in an Ever-Changing World: Proceedings of International Conference on Competitive Manufacturing (COMA ’22) KW - Carbon dioxide capture and utilization KW - Synthetischer Kraftstoff KW - Upcycling KW - Kreislaufwirtschaft KW - Zementindustrie KW - Kohlendioxid Y1 - 2023 SN - 9783031156014 U6 - https://doi.org/10.1007/978-3-031-15602-1_44 SN - 2194-0525 SP - 603 EP - 612 PB - Springer Nature CY - Cham ER - TY - CHAP A1 - Völker, Lutz A1 - Casey, Michael A1 - Neef, Matthias A1 - Stüer, Heinrich T1 - The Flow Field and Performance of a Model Low Pressure Steam Turbine T2 - 6th European Conference on Turbomachinery - Fluid Dynamics and Thermodynamics : conference proceedings; 7-11 March 2005, Lille, France N2 - A 3-stage model of a low pressure steam turbine has been equipped with extensive instrumentation to assess aerodynamic performance and for validation of numerical methods. Emphasis was placed on detailed measurements at the inlet and exit of the last stage guide vane. Two configurations were examined – the first used a guide vane with lean in the last stage and a the second used a guide vane combining both lean and sweep. The experimental results from the two configurations have been compared with data from various design methods, ranging from through-flow to 3D multistage viscous simulations with mixing planes. Despite the challenges in modelling complex rotating blades in a wet steam environment, good agreement between the numerical and experimental results was obtained, and the new stator vane combining lean and sweep achieved the desired increase in reaction at the hub section. Y1 - 2005 CY - Lille ER - TY - CHAP A1 - Voss, Karsten A1 - Sartori, Igor A1 - Napolitano, Assunta A1 - Geier, Sonja A1 - Gonzalves, Helder A1 - Hall, Monika A1 - Heiselberg, Per A1 - Widén, Joakim A1 - Candanedo, José A. A1 - Musall, Eike A1 - Karlsson, Björn A1 - Torcellini, Paul T1 - Load Matching and Grid Interaction of Net Zero Energy Buildings. EuroSun Conference 2010, Graz N2 - “Net Zero Energy Building” has become a prominent wording to describe the synergy of energy efficient building and renewable energy utilization to reach a balanced energy budget over a yearly cycle. Taking into account the energy exchange with a grid infrastructure overcomes the limitations of seasonal energy storage on-site. Even though the wording “Net Zero Energy Building” focuses on the annual energy balance, large differences may occur between solution sets in the amount of grid interaction needed to reach the goal. The paper reports on the analysis of example buildings concerning the load matching and grid interaction. Indices to describe both issues are proposed and foreseen as part of a harmonized definition framework. The work is part of subtask A of the IEA SHCP Task40/ECBCS Annex 52: “Towards Net Zero Energy Solar Buildings”. Y1 - 2010 UR - https://www.researchgate.net/publication/229043919_Load_Matching_and_Grid_Interaction_of_Net_Zero_Energy_Buildings CY - Graz ER - TY - CHAP A1 - Voss, Karsten A1 - Musall, Eike A1 - Sartori, Igor A1 - Lollini, Roberto ED - Stolten, Detlef ED - Scherer, Viktor T1 - Nearly Zero, Net Zero, and Plus Energy Buildings – Theory, Terminology, Tools, and Examples T2 - Transition to renewable energy systems KW - Eigene Methodik KW - Mismatch KW - Querschnittsauswertung Y1 - 2013 SN - 978-3-527-33239-7 U6 - https://doi.org/10.1002/9783527673872.ch41 SP - 875 EP - 889 PB - Wiley CY - Weinheim ER - TY - JOUR A1 - Voss, Karsten A1 - Musall, Eike A1 - Lichtmeß, Markus T1 - From Low Energy to Net Zero-Energy Buildings: Status and Perspectives JF - Journal of Green Building N2 - “Net Zero-Energy Building” has become a popular catchphrase to describe the synergy between energy-efficient building and renewable energy utilisation to achieve a balanced energy budget over an annual cycle. Taking into account the energy exchange with a grid overcomes the limitations of energy-autonomous buildings with the need for seasonal energy storage on-site. Although the expression, “Net Zero-Energy Building,” appears in many energy policy documents, a harmonised definition or a standardised balancing method is still lacking. This paper reports on the background and the various effects influencing the energy balance approach. After discussing the national energy code framework in Germany, a harmonised terminology and balancing procedure is proposed. The procedure takes not only the energy balance but also energy efficiency and load matching into account. KW - Eigene Methodik Y1 - 2011 U6 - https://doi.org/10.3992/jgb.6.1.46 VL - 6 IS - 1 SP - 46 EP - 57 PB - College Publishing ER - TY - GEN A1 - von Berg, Markus A1 - Versümer, Siegbert A1 - Steffens, Jochen A1 - Bitta, Joshua T1 - Reproduction levels of outdoor soundscapes in the lab after in-situ exposure: participant responses and recording level envelopes N2 - Supplemental material for https://doi.org/10.1051/aacus/2025062 To investigate loudness biases in the lab, where outdoor sounds are perceived as being too loud if reproduced with physically accurate levels in the lab, a listening experiment was conducted, where thirty-one participants visited a street and listened to the environmental sounds for one minute. These sounds were also recorded using a dummy head. Afterwards, participants listened to the recording in a quiet laboratory and adjusted its level as they remembered it. About half of the sample did this immediately, the other half about 20 min after the recording, during which the performed another listening tests. Afterwards, previous experience with acoustics, musical sophistication and noise sensitivity were assessed. The results revealed a mean gain adjustment of 8.9 dB below the original. The data uploaded here comprises participants gain adjustment, the recording levels averaged other A) the entire recording and B) the first and last 7.5s or 15s, respecitvely and all questionnaire responses as well as aggregate scores for musical sophistication and noise sensitivity, as well as a binary categorization of the respondent into laymen and experienced, based on their previous experience with acoustics. For sociodemographic information, participants age, sex and educational degree are reported as well. Content - 00_Description: - Description of the data files - Includes a list of explanation of the columns names in "data_questionnaires_aggregateLevels.csv - data_questionnaires_aggregateLevels.csv - Participants' adjusted recordings levels - Several level and loudness aggregates of each participant's recording that were analyzed in the paper - Participants' responses to the administered questionnaires - level_envelopes.zip - Archive with 31 CSV files containing level envelopes of each participant's recording. - A-weighted and unweighted level envelope for the dummy head's left and right ear - One-minute recordings with a temporal resolution of 125ms KW - Psychoakustik KW - Lautwahrnehmung KW - Lautstärke Y1 - 2025 UR - https://doi.org/10.1051/aacus/2025062 U6 - https://doi.org/10.5281/zenodo.17663267 PB - Zenodo ER - TY - JOUR A1 - von Berg, Markus A1 - Versümer, Siegbert A1 - Bitta, Joshua A1 - Steffens, Jochen T1 - Reduced reproduction levels of outdoor soundscapes are deemed appropriate - even after real-world exposure JF - Acta Acustica N2 - Laboratory experiments in psychoacoustical and soundscape research indicate that participants perceive a reproduction sound level lowered by 8-10 dB as more plausible than the original level. This bias supposedly roots in an adaptation of perceptual loudness scaling to the laboratory environment, that is overall quieter than urban outdoor soundscapes. To gain further insights into the nature of such loudness bias, we conducted a listening experiment in both field and laboratory using a within-subjects design. Thirty-one participants visited a street and listened to the environmental sounds for one minute, while these sounds were also recorded using a dummy head. Thereafter, they listened to the recording in a quiet laboratory nearby and adjusted its level as they remembered it. About half of the sample did this immediately, the other half about 20 minutes after the recording. Results confirm a bias towards lower levels with a mean of about 8.9 dB, regardless of the time between the recording and the reproduction in the laboratory. Also, participants with higher musical abilities tended to select higher, more accurate levels, whereas noise-sensitive participants deemed lower levels appropriate. Results suggest that the hypothesized adaptation of perceptual scaling to the laboratory happens immediately and is affected by individual factors. KW - Psychoakustik KW - Lautwahrnehmung KW - Lautstärke Y1 - 2025 UR - https://doi.org/10.5281/zenodo.17663267 U6 - https://doi.org/10.1051/aacus/2025062 SN - 2681-4617 N1 - Acta Acustica, Forthcoming article, Accepted Manuscript PB - EDP Sciences ER - TY - JOUR A1 - von Berg, Markus A1 - Steffens, Jochen A1 - Weinzierl, Stefan A1 - Müllensiefen, Daniel T1 - Assessing room acoustic listening expertise JF - Journal of the Acoustical Society of America N2 - Musicians and music professionals are often considered to be expert listeners for listening tests on room acoustics. However, these tests often target acoustic parameters other than those typically relevant in music such as pitch, rhythm, amplitude, or timbre. To assess the expertise in perceiving and understanding room acoustical phenomena, a listening test battery was constructed to measure the perceptual sensitivity and cognitive abilities in the identification of rooms with different reverberation times and different spectral envelopes. Performance in these tests was related to data from the Goldsmiths Musical Sophistication Index, self-reported previous experience in music recording and acoustics, and academic knowledge on acoustics. The data from 102 participants show that sensory and cognitive abilities are both correlated significantly with musical training, analytic listening skills, recording experience, and academic knowledge on acoustics, whereas general interest in and engagement with music do not show any significant correlations. The regression models, using only significantly correlated criteria of musicality and professional expertise, explain only small to moderate amounts (11%–28%) of the variance in the “room acoustic listening expertise” across the different tasks of the battery. Thus, the results suggest that the traditional criteria for selecting expert listeners in room acoustics are only weak predictors of their actual performances. Y1 - 2021 U6 - https://doi.org/10.1121/10.0006574 VL - 150 IS - 4 SP - 2539 EP - 2548 PB - Acoustical Society of America ER - TY - CHAP A1 - von Berg, Markus A1 - Himmelin, Hendrik A1 - Steffens, Jochen T1 - Does Noise Sensitivity Decrease Auditory Task Performance and Person-Reliability? [Vortrag] T2 - Fortschritte der Akustik - DAGA 2024, 18. - 21. März 2024, Hannover N2 - Noise sensitivity is a widely used, yet inconsistently defined, concept of being disturbed by environmental noise, independent of loudness levels. The origins of noise sensitivity are mostly unclear, but it has a higher prevalence among people with attention deficit hyperactivity disorder and autism, and could be caused by increased neural excitation due to sound, resulting in increased cognitive load. In this case, noise sensitivity can be expected to decrease people’s mental performance in both auditory and non-auditory tasks. The former was tested in an experiment using a dual-task paradigm where participants had to solve a visual task in the presence of environmental sounds and afterwards had to recall which sounds they perceived and to evaluate the overall soundscape pleasantness and loudness. Preliminary results indicate that participants’ noise sensitivity is positively correlated with the experienced cognitive load as well as with loudness and unpleasantness judgments. Also, noise sensitivity was negatively associated with the performance in the recall task and the test-retest-reliability of their judgments. These findings support the idea that noise sensitivity is a consequence of difficulties in filtering irrelevant auditory information. Y1 - 2024 PB - Deutsche Gesellschaft für Akustik e.V. CY - Berlin ER - TY - CHAP A1 - Voigt, Christian A1 - Unterfrauner, Elisabeth A1 - Stelzer, Roland ED - Kompatsiaris, Ioannis ED - Cave, Jonathan ED - Satsiou, Anna ED - Carle, Georg ED - Passani, Antonella ED - Kontopoulos, Efstratios ED - Diplaris, Sotiris ED - McMillan, Donald T1 - Diversity in FabLabs: Culture, Role Models and the Gendering of Making T2 - Internet Science Y1 - 2017 SN - 978-3-319-70283-4 U6 - https://doi.org/10.1007/978-3-319-70284-1_5 VL - Lecture Notes in Computer Science, 10673 SP - 52 EP - 68 PB - Springer International Publishing CY - Cham ER - TY - CHAP A1 - Voigt, Christian A1 - Unterfrauner, E. A1 - Aslan, Tamer A1 - Hofer, Margit ED - Blikstein, Paulo ED - Holbert, Nathan T1 - Design Thinking with Children T2 - Proceedings of FabLearn 2019, 09.03.-10.03.2019, New York KW - FBSK Y1 - 2019 SN - 9781450362443 U6 - https://doi.org/10.1145/3311890.3311912 SP - 144 EP - 147 PB - ACM CY - New York ER - TY - JOUR A1 - Voigt, Christian A1 - Swatman, Paula T1 - Contextual e-learning evaluation: A preliminary framework JF - Journal of Educational Media Y1 - 2004 U6 - https://doi.org/10.1080/1358165042000283057 SN - 1469-9443 VL - 29 IS - 3 SP - 175 EP - 187 PB - Taylor & Francis ER - TY - CHAP A1 - Voigt, Christian A1 - Swatman, Paula T1 - Online Case Discussions: Tensions in Activity Systems T2 - Sixth IEEE International Conference on Advanced Learning Technologies (ICALT'06), 05-07 July 2006, Kerkrade, The Netherlands Y1 - 2006 SN - 0-7695-2632-2 U6 - https://doi.org/10.1109/icalt.2006.1652550 SP - 748 EP - 750 PB - IEEE ER - TY - CHAP A1 - Voigt, Christian A1 - Montero, Calkin Suero A1 - Menichinelli, Massimo ED - Bagnoli, Franco ED - Satsiou, Anna ED - Stavrakakis, Ioannis ED - Nesi, Paolo ED - Pacini, Giovanna ED - Welp, Yanina ED - Tiropanis, Thanassis ED - DiFranzo, Dominic T1 - An Empirically Informed Taxonomy for the Maker Movement T2 - Internet Science Y1 - 2016 SN - 978-3-319-45981-3 U6 - https://doi.org/10.1007/978-3-319-45982-0_17 VL - Lecture Notes in Computer Science, 9934 SP - 189 EP - 204 PB - Springer International Publishing CY - Cham ER - TY - CHAP A1 - Voigt, Christian A1 - Misuraca, Gianluca A1 - Kucsera, Csaba A1 - Lipparini, Fiorenza T1 - ICT-enabled Social Innovations in Social Services: Mapping the Evidence T2 - 2016 Conference for E-Democracy and Open Government (CeDEM), 18.05.2016 - 20.05.2016, Krems, Austria Y1 - 2016 SN - 978-1-5090-1042-4 U6 - https://doi.org/10.1109/cedem.2016.15 SP - 105 EP - 114 PB - IEEE ER - TY - CHAP A1 - Voigt, Christian A1 - Mair, Sebastian A1 - Unterfrauner, Elisabeth ED - Bodrunova, Svetlana S. T1 - Hacking the Knowledge of Maker Communities in Support of 21st Century Education T2 - Internet Science Y1 - 2018 SN - 978-3-030-01436-0 U6 - https://doi.org/10.1007/978-3-030-01437-7_22 VL - Lecture Notes in Computer Science: 11193 SP - 286 EP - 299 PB - Springer International Publishing CY - Cham ER - TY - CHAP A1 - Voigt, Christian A1 - Kieslinger, Barbara A1 - Schäfer, Teresa ED - Meiselwitz, Gabriele T1 - User Experiences Around Sentiment Analyses, Facilitating Workplace Learning T2 - Social Computing and Social Media. Applications and Analytics Y1 - 2017 SN - 978-3-319-58561-1 U6 - https://doi.org/10.1007/978-3-319-58562-8_24 VL - Lecture Notes in Computer Science: 10283 SP - 312 EP - 324 PB - Springer International Publishing CY - Cham ER - TY - CHAP A1 - Voigt, Christian A1 - Dobner, Susanne A1 - Neuschmid, Julia T1 - Data-driven and value sensitive urban decision making T2 - eChallenges e-2015 Conference, 25.11. - 27.11.2015, Vilnius Y1 - 2015 SN - 978-1-9058-2453-3 U6 - https://doi.org/10.1109/echallenges.2015.7441077 SP - 1 EP - 9 PB - IEEE ER - TY - CHAP A1 - Voigt, Christian A1 - Dobner, Susanne A1 - Ferri, Mireia A1 - Hahmann, Stefan A1 - Gareis, Karsten ED - Miesenberger, Klaus ED - Bühler, Christian ED - Penaz, Petr T1 - Community Engagement Strategies for Crowdsourcing Accessibility Information T2 - Computers Helping People with Special Needs Y1 - 2016 SN - 978-3-319-41266-5 U6 - https://doi.org/10.1007/978-3-319-41267-2_35 VL - Lecture Notes in Computer Science: 9759 SP - 257 EP - 264 PB - Springer International Publishing CY - Cham ER - TY - CHAP A1 - Voigt, Christian ED - Akkermans, Hans ED - Fontaine, Kathy ED - Vermeulen, Ivar ED - Houben, Geert-Jan ED - Weber, Matthew S. T1 - Not Every Remix is an Innovation T2 - Proceedings of the 10th ACM Conference on Web Science, 27.05.-30.05.2018, Amsterdam Y1 - 2018 SN - 9781450355636 U6 - https://doi.org/10.1145/3201064.3201070 SP - 153 EP - 161 PB - ACM CY - New York ER - TY - CHAP A1 - Vogel, Andreas A1 - Weber, Konradin A1 - Fischer, Christian A1 - van Haren, Günther A1 - Pohl, Tobias A1 - Grobety, Bernhard A1 - Meier, Mario T1 - Airborne in-situ measurements of the Eyjafjallojökull ash plume with a small aircraft and optical particle spectrometers over north-western Germany - comparison between the aircraft measurements and the VAAC-model calculations T2 - Geophysical Research Abstracts: EGU General Assembly 2011 N2 - The eruption of the volcano Eyjafjallajökull (Iceland) in 2010 has caused a transportation of an ash dust plume over large areas of Europe. In April 2010 many airports in Europe were closed for several days because of the volcano ash plume and even in May 2010 several German and European airports were closed for shorter periods because of the danger caused by the volcanic ash dust. The VAAC (Volcanic Ash Advisory Center), London, has continuously published graphics of the predicted spread and dispersion of the volcanic ash plume, which were partly basis for the air traffic restrictions in Germany. In this situation the Laboratory for Environmental Measurement Techniques of the University of Applied Sciences in Duesseldorf has performed 14 measurement flights starting from April 23 2010 to May 21 2010 to get real airborne in-situ dust measurement data over the north-western part of Germany and for comparison with the predicted ash dispersion model data of the VAAC of London in Germany. Moreover, airborne passive DOAS remote sensing measurements have been performed by a mini-DOAS system for SO2-measurements within the plume. In this paper the results of the airborne optical ash particle measurements as well as the remote sensing SO2 measurements will be reported for situations with and without the volcanic plume over northern Germany in detail. Moreover, the measured dust data will be compared with the model dispersion predictions for the ash plume by the VAAC and with European limit concentrations. Main conclusions are: The „ash plume“, found by the aircraft measurement of the Duesseldorf University of Applied Sciences over north western Germany in the “red zone” predicted by the VAAC turned out to be inhomogeneous during the measurement flights Clusters of ash plume sometimes had only a height extension of several hundred meters or less Ash substructures with a horizontal extension of ten kilometres up to several tenth of kilometres could be found Vertical double structures of ash plume could be measured by spiral flights and could be observed visually in horizontal direction Ash plume could be observed visually as small brown layer in horizontal direction Particles collected during flight could be identified as ash particles by electron microscope analysis and chemical analysis KW - Luftreinhaltung KW - Vulkanasche KW - Atmosphärisches Aerosol KW - Eyjafjallajökull KW - Messtechnik Y1 - 2011 VL - 13 PB - Copernicus CY - Göttingen ER - TY - CHAP A1 - Vogel, Andreas A1 - Weber, Konradin A1 - Fischer, Christian A1 - Prata, A. J. A1 - Durant, A. J. T1 - Aircraft in situ and remote sensing measurements of emissions from Etna volcano, Sicily T2 - Geophysical Research Abstracts: EGU General Assembly 2012 N2 - Volcanoes emit particles (silicates and sulphate aerosol) and gases (e.g., water and sulphur dioxide) which influence the radiative balance of the atmosphere. The rate at which sulphur dioxide oxidises to sulphate aerosol is poorly constrained and measurements of downwind abundance are required to quantify the rate at which this process occurs. During July and November 2011, a series of measurements were performed in emissions from Etna Volcano, Sicily, using the University of Applied Sciences (Dusseldorf) research aircraft. Both in situ and remote sensing instrumentation was simultaneously deployed to quantify the down-wind characteristics of gases and particles in the plume emitted by the volcano. In situ particle characteristics were measured using a Grimm 1.109 optical particle counter (microparticles 0.25-32 microns) and Grimm 1320 diffusion electrometer (nanoparticles 25-300 nanometers). Column abundance of sulphur dioxide was measured using a vertically-pointing differential optical absorption spectrometer (DOAS). These measurements were compared to horizontal pathlength-integrated measurements of sulphur dioxide from the Airborne Volcanic Imaging Object Detector (AVOID). Down-wind plume dispersion was discriminated through a series of aircraft transects below and through the volcanic plume. The emissions contained large amounts of nanoparticles relative to microparticles, which reflects gas-phase nucleation of sulphate aerosol. The AVOID system discriminated horizontal layering of volcanic aerosol at altitudes of up to 12,000 ft from a detection range of >50 km. Plume boundaries were discriminated using a combination of the in situ and DOAS measurements in order to compare to the pathlength-integrated measurements from AVOID. KW - Luftreinhaltung KW - Forschungsflugzeug KW - Messtechnik KW - Telemetrie KW - Schwefeldioxid KW - Vulkanismus KW - Atmosphärisches Aerosol Y1 - 2012 PB - Copernicus CY - Göttingen ER - TY - CHAP A1 - Vogel, Andreas A1 - Weber, Konradin A1 - Eliasson, Jonas A1 - Palsson, Asgeir A1 - Moser, H. M. A1 - Palsson, Thorgeir A1 - von Löwis, S. A1 - Fischer, Christian T1 - Airborne and groundbased measurements of ash particles on Iceland and over Germany during the Grímsvötn eruption May 2011 [Abstract] T2 - Geophysical Research Abstracts:EGU General Assembly 2012, held 22-27 April, 2012 in Vienna, Austria N2 - The eruption of the Grimsvötn volcano in May 2010 posed with its ash plume a thread to the aviation in northern Europe. Because of ash plume forecasts of the VAAC London the airport of Keflavik in Iceland as well as airports in England, Scotland and Scandinavia were closed for some time, which caused the cancellation or change of about 500 flights in Europe. Even in Germany the airports of Bremen, Hamburg and Berlin were closed for several hours on 25 May 2011. During this eruption period in May 2011, a team of the Duesseldorf University of Applied Sciences, the University of Iceland, the University of Reykjavik and the IMO has performed airborne in-situ measurements over Iceland and Germany as well as ground based measurements in the south of Iceland. The ground based measurements were performed continuously during the whole eruption period at two significant positions (Skogar and Hvollsvöllur) with optical particle counters (OPCs). The measurement method was based on measuring the airborne concentrations of the classic aerosol components (PM10, PM2.5 and PM1) and TSP (total suspended particles) every 6 seconds. Additional measurement flights on Iceland were started already one day after the beginning of the eruption (twelve in-situ measurement flights) and marked the spatial and temporal spread of volcanic ash in the atmosphere. For the flights light slow flying piston engine powered airplanes where used. The flights over Iceland focused on the western part of Iceland in the region of Reykjavik and Keflavik and over the international airport in Keflavik and were mostly coordinated by ISAVIA. The measurement flights helped to keep Keflavik International Airport open for many additional hours despite of adverse predictions by the London VAAC model, because it was possible to observe the particle concentration on-line during the flights. In Germany a measurement flight was performed on 25 May 2012 over the northern part of Germany where the volcanic ash cloud was forecasted from the dispersion model of the London VAAC. This flight was performed on the behalf of the German Weather Service (DWD). The measurement flights revealed most time relative low airborne ash concentrations over western Iceland, although the groundbased measured ash concentrations in the south of Iceland nearer to the Grimsvötn were very high. In Germany the measured concentrations during the flight were low enough to be consistent with the re-opening of the airports Bremen, Hamburg and Berlin, which were closed by the authorities for several hours on 25 May 2011 because of high concentration predictions by the VAAC-model. The measurement flights clearly proved that OPCs, based on slow flying piston-motor driven aircrafts, are very suitable for the determination of airborne ash particles during volcanic eruptions. This is an important issue for air traffic safety. KW - Luftreinhaltung Y1 - 2012 UR - https://meetingorganizer.copernicus.org/EGU2012/EGU2012-12854-1.pdf SP - 12854 PB - Copernicus CY - Göttingen ER - TY - JOUR A1 - Vocks, Silja A1 - Wächter, Alexandra A1 - Wucherer, Maike A1 - Kosfelder, Joachim T1 - Look at yourself: can body image therapy affect the cognitive and emotional response to seeing oneself in the mirror in eating disorders? JF - European eating disorders review : the journal of the Eating Disorders Association N2 - The study examined whether the extent of negative body-related thoughts and emotions evoked by looking in a mirror can be changed by cognitive-behavioural body image therapy (BIT) and whether any remaining cognitive and affective responses dropped faster after the treatment. Females with eating disorders (n = 17) looked in a mirror for 40 minutes under standardised conditions before and after BIT. A control group (CG) (n = 24) was also exposed to their own bodies twice. Cognitive and affective reactions were assessed four times during the session. Hierarchical Linear Modelling revealed that among eating-disordered patients, the entrance levels of negative thoughts and feelings were lower at post compared to pre-BIT, whereas they remained stable in the CG. The extent of reduction of the remaining body image distress was not changed after the treatment. BIT seems to be a potent treatment of negative emotions and cognitions in an in vivo situation. KW - FBSK_Webseite Y1 - 2008 UR - http://www.ncbi.nlm.nih.gov/pubmed/17721910 U6 - https://doi.org/10.1002/erv.825 VL - 16 IS - 2 SP - 147 EP - 154 PB - Wiley ER -