TY - JOUR A1 - Grote, Wolfgang A1 - Kastsian, Darya A1 - Mönnigmann, Martin T1 - Guaranteed stability in optimal power generation dispatching under uncertainty JF - IEEE Transactions on Power Systems N2 - Stability and cost optimality of power generation and supply systems must not be considered independently from one another. Simple examples show that optimizing cost without considering stability may result in modes of operation that, while economically optimal, are unstable. We demonstrate that stability, robustness, and optimality can be considered systematically and simultaneously by combining bifurcation theory and nonlinear optimization. Essentially, the proposed method enforces a backoff distance between the optimal point of operation and operational or stability boundaries in the space of the optimization variables, where bifurcation theory is used to describe nonlinear stability boundaries. KW - Normal vector method KW - Power dispatch KW - Robust optimization KW - Stability KW - Unit commitment Y1 - 2013 U6 - https://doi.org/10.1109/TPWRS.2012.2207970 SN - 1558-0679 VL - 28 IS - 2 SP - 1103 EP - 1112 PB - IEEE ER - TY - JOUR A1 - Mier, Dominik A1 - Möllenbruck, Florian A1 - Jost, Michael A1 - Grote, Wolfgang A1 - Mönnigmann, Martin T1 - Model predictive control of the steam cycle in a solar power plant JF - IFAC-PapersOnLine N2 - We derive a nonlinear model of the steam cycle of a solar power plant, estimate its unknown parameters with measured data, and design a linear model predictive controller based on the resulting model. Simulations show that the linear model predictive controller is able to regulate the electrical power of the nonlinear steam process of the plant to a given reference trajectory very well. Moreover, it results in very good disturbance rejection. KW - Power plant control KW - solar power KW - model predictive control Y1 - 2015 U6 - https://doi.org/10.1016/j.ifacol.2015.09.052 SN - 2405-8963 VL - 48 IS - 8 SP - 710 EP - 715 PB - Elsevier ER - TY - CHAP A1 - Grote-Ramm, Wolfgang A1 - Schönig, Felix T1 - Model Predictive Control of Solar Receivers T2 - 25th Cologne Solar Colloquium (DLR) Y1 - 2022 UR - https://www.dlr.de/sf/PortalData/73/Resources/dokumente/soko/soko2022/DLR_Solar_Colloquium_2022_Model_Predictive_Control_GROTE-RAMM.pdf ER - TY - CHAP A1 - Grote, Wolfgang A1 - Kastsian, Darya A1 - Mönnigmann, Martin T1 - Optimal power system unit commitment with guaranteed local stability T2 - Proceedings of the 2011 American Control Conference N2 - This article deals with the cost optimal commitment of power systems. System stability is often only considered after solving the commitment problem. We show by example that a cost optimization may result in a mode of operation that, while economically optimal, is unstable or has otherwise unacceptable dynamics. As a remedy, we propose to use the so-called normal vector method, which has been developed for the optimization of nonlinear dynamical systems with stability boundaries and uncertain parameters. We apply the method to a small sample power grid, where the optimization goal is to minimize the energy production costs for a given power consumption. KW - Optimization KW - Power system stability KW - Robustness Y1 - 2011 U6 - https://doi.org/10.1109/ACC.2011.5991058 SN - 2378-5861 SP - 4526 EP - 4531 PB - IEEE ER - TY - JOUR A1 - Uffmann, Kai A1 - Abicht, Claus A1 - Grote, Wolfgang A1 - Quick, Harald H. A1 - Ladd, Mark E. T1 - Design of an MR-compatible piezoelectric actuator for MR elastography JF - Concepts in Magnetic Resonance Part A: Bridging Education and Research N2 - Magnetic Resonance (MR) elastography is a method for measuring tissue elasticity via phase images acquired with an MR scanner. The propagation of periodic mechanical waves through the tissue can be captured by means of a modified phase contrast sequence. These waves are generated with a mechanical oscillator (actuator) and coupled into the tissue through the skin. The actuator must be capable of generating a sinusoidal excitation with excellent phase and amplitude stability, while not disturbing the MR imaging process. In this work, an actuator based on a piezoelectric principle was developed. Based on the imaging evaluation of several material samples, the housing for the piezoelectric ceramic was constructed of aluminum. Smaller parts of the housing were manufactured from brass and titanium to fulfill the mechanical constraints. A lever was used to transfer the oscillation generated by the piezoelectric ceramic to the point of excitation. The lever amplifies the piezoelectric motion, allowing for a more compact design. Three different lever designs were characterized by an acceleration sensor both outside and inside the magnet. It was shown that the rigidity of the lever, as determined by its material and form, was decisive in determining the resonant frequency of the system and therefore the maximum practical frequency of operation. It was also shown that the motion of the oscillator is unaffected by the electromagnetic fields of the MR imager. The final design can be placed directly in the magnet bore within a few centimeters of the tissue volume to be imaged without generating significant artifacts. An amplitude range of 0–1 mm in the frequency range from 0 to over 300 Hz was achieved, sufficient for performing most MR elastography applications. © 2002 Wiley Periodicals, Inc. Concepts in Magnetic Resonance (Magn Reson Engineering) 15: 239–254, 2002 KW - Elasticity KW - Elastography KW - Actuator KW - MRI KW - Piezoelectric Y1 - 2002 UR - 1552-5023 U6 - https://doi.org/https://doi.org/10.1002/cmr.10045 VL - 15 IS - 4 SP - 239 EP - 254 PB - Wiley ER - TY - JOUR A1 - Beyer, Marc-André A1 - Grote, Wolfgang A1 - Reinig, Gunter T1 - Adaptive exact linearization control of batch polymerization reactors using a Sigma-Point Kalman Filter JF - Journal of Process Control N2 - The Chylla–Haase polymerization reactor is widely accepted as a benchmark process for the evaluation of control strategies for batch reactors. In this contribution a control concept based on Exact I/O-Linearization is proposed and compared to a conventional cascade control structure. In order to adapt the exact linearization control strategy to various polymerization products and batch conditions, an advanced probabilistic inference algorithm (Sigma-Point Kalman Filter) is applied and investigated. Sigma-Point Kalman Filters have the major improvement of simplified implementation compared to local linearization methods (i.e. Extended Kalman Filter) because no analytical Jacobians are required. Stochastic simulation studies are introduced and show the effectiveness, accuracy and benefit of the control concept. Within several scenarios a satisfying robustness against structural errors in the underlying model equations for the nonlinear control law and the inference algorithm is demonstrated. Furthermore it is pointed out, that with little effort in reassembling the plant design, control performance can be improved significantly. KW - Batch process operation KW - Exact I/O-Linearization control KW - Online parameter estimation KW - Sigma-Point Kalman Filter Y1 - 2008 UR - 1873-2771 U6 - https://doi.org/10.1016/j.jprocont.2007.12.002 VL - 18 IS - 7-8 SP - 663 EP - 675 PB - Elsevier ER - TY - JOUR A1 - Galban, Craig A1 - Maderwald, Stefan A1 - Eggebrecht, Holger A1 - Grote, Wolfgang A1 - de Greiff, A. A1 - Uffmann, K. A1 - Ladd, M. E. T1 - Monitoring the Effects of Chronic Obstructive Pulmonary Disease on Muscle Elasticity by MR Elastography JF - Proc. Intl. Soc. Mag. Reson. Med. N2 - Men afflicted with chronic obstructive pulmonary disease (COPD) show signs of muscle dysfunction, such as increased muscle fatigue and acidosis during exercise. We hypothesize that muscle elasticity of the lower extremities differs between patients with COPD and age-related controls. The shear modulus of the soleus muscle was measured non-invasively using MR elastography (MRE) at 0%, 5%, 10%, 15%, and 20% of the subject’s maximum applied force. The results from this study showed statistical differences between the patients and controls, even though there were no statistical differences in the maximum applied force. Y1 - 2005 UR - https://cds.ismrm.org/protected/05MProceedings/PDFfiles/02015.pdf VL - 13 SP - 2015 ER - TY - JOUR A1 - Galban, Craig A1 - Maderwald, Stefan A1 - Herrmann, Burkhard A1 - Brauck, K. A1 - Grote, Wolfgang A1 - de Greiff, A. A1 - Uffmann, K. A1 - Ladd, M. T1 - Measuring Skeletal Muscle Elasticity in Patients with Hypogonadism by MR Elastography JF - Proc. Intl. Soc. Mag. Reson. Med. N2 - Men afflicted with hypogonadism have reduced fat-free mass and in some cases a loss in muscle strength. We hypothesize that muscle elasticity of the lower extremities differs between patients with hypogonadism and healthy controls. The shear modulus of the soleus muscle was measured non-invasively using MR elastography (MRE) at 0%, 5%, 10%, 15%, and 20% of the subject’s maximum applied force. The results from this study showed statistical differences between the patients and controls, even though there were no statistical differences in applied force. Y1 - 2005 UR - https://cds.ismrm.org/protected/05MProceedings/PDFfiles/02016.pdf VL - 13 SP - 2016 ER - TY - CHAP A1 - Grote-Ramm, Wolfgang A1 - Schönig, Felix A1 - Schwarzbözl, Peter A1 - Drexelius, Maximilian A1 - Maldonado Quinto, Daniel A1 - Binder, Matthias T1 - Model Predictive Control and Service Life Monitoring for Molten Salt Solar Power Towers T2 - 29th SolarPACES Conference, Sydney N2 - A two-component system for control and monitoring of solar power towers with molten salt receivers is proposed. The control component consists of a model predictive control applica-tion (MPC) with a flexible objective function and on-line tunable weights, which runs on a In-dustrial PC and uses a reduced order dynamic model of the receiver’s thermal and flow dy-namics. The second component consists of a service-life monitoring unit, which estimates the service-life consumption of the absorber tubes depending on the current mode of operation based on thermal stresses and creep fatigue in the high temperature regime. The calculation of stresses is done based on a detailed finite element study, in which a digital twin of the re-ceiver was developed. By parallelising the model solver, the estimation of service-life con-sumption became capable of real-time operation. The system has been implemented at a test facility in Jülich, Germany, and awaits field experiments. In this paper, the modeling and archi-tecture are presented along simulation results, which were validated on a hardware-in-the-loop test bench. The MPC showed good disturbance rejection while respecting process variable constraints during the simulation studies. KW - Solar Power Tower KW - Molten Salt KW - Model Predictive Control KW - Dynamic Modelling KW - Service-life Monitoring Y1 - 2023 N1 - Eingereichter Beitrag ER - TY - JOUR A1 - Langmann, Reinhard A1 - Michael, Stiller T1 - The PLC as a Smart Service in Industry 4.0 Production System JF - Applied Sciences Y1 - 2019 U6 - https://doi.org/10.3390/app9183815 SN - 2076-3417 VL - 9 IS - 18 PB - MDPI ER - TY - PAT A1 - Lessmann, Stephanie A1 - Meuter, Mirko A1 - Mueller, Dennis T1 - Method to determine distance of an object from an automated vehicle with a monocular device N2 - A method of determining the distance of an object from an automated vehicle based on images taken by a monocular image acquiring device. The object is recognized with an object-class by means of an image processing system. Respective position data are determined from the images using a pinhole camera model based on the object-class. Position data indicating in world coordinates the position of a reference point of the object with respect to the plane of the road is used with a scaling factor of the pinhole camera model estimated by means of a Bayes estimator using the position data as observations and under the assumption that the reference point of the object is located on the plane of the road with a predefined probability. The distance of the object from the automated vehicle is calculated from the estimated scaling factor using the pinhole camera model. Y1 - 2018 UR - https://depatisnet.dpma.de/DepatisNet/depatisnet?action=pdf&docid=US000009862318B2&xxxfull=1 ER - TY - PAT A1 - Kraemer, Marco A1 - Svetlichny, Vitaly A1 - Eilert, Eva T1 - Method for producing a fermentation product: Angemeldet durch DIREVO Industrial Biotechnology GmbH N2 - Prioritätsdaten: EP15191039A·2015-10-22; US201562245054P·2015-10-22 Bibliographische IPC: C12P7/06; C12P7/14; Y1 - 2017 UR - https://depatisnet.dpma.de/DepatisNet/depatisnet?action=pdf&docid=WO002017067698A1&xxxfull=1 ER - TY - PAT A1 - Eilert, Eva A1 - Suckow, Manfred A1 - Piontek, Michael T1 - A method for producing ectoine or a derivative thereof and a yeast cell for use as a host cell in such a method N2 - Klassifikationen IPC C12N15/81; C12N15/82; C12P17/12; C12P7/42; CPC C12N15/815 (EP); C12P17/12 (EP); Y1 - 2014 UR - https://depatisnet.dpma.de/DepatisNet/depatisnet?action=pdf&docid=EP000002743350A1&xxxfull=1 ER - TY - RPRT A1 - Deckert, Carsten A1 - Keszler, Julia A1 - Schmitz, Helen A1 - Mohya, Ahmed T1 - Forecasting Game: Teaching Prospective Engineers Quantitative Forecasting Techniques with a Simulation Game N2 - In order to determine demand as precisely as possible, many businesses use several forecasting methods. The aim of forecasting is to determine future demand based on data from the past. The use of a specific method is not always easy and depends on a number of factors. To help prospective engineers find the most suitable forecasting method for a specific problem, a forecasting game was developed and then evaluated. The paper describes the design and the evaluation of the forecasting game. In order to provide an overview of existing forecasting methods, the first part of the paper examined the mathematical fundamentals of eight different forecasting methods and outlined the requirements for their application. The second part of the paper describes the creation of a forecasting game in which prospective engineers can learn how to determine the appropriate forecasting method for specific scenarios. In total, five scenarios covering the three different demand patterns (linear/stationary, trend and seasonal) as well as the forecast quality methods were developed and can be played through. For each scenario, the player has to choose the most appropriate forecasting method for a specific problem based on a self-created task description. To make the game as realistic as possible, a fictional company with a background story was designed. The last part was about the evaluation of the forecasting game. For the evaluation, a student survey to gather the opinions of the students was conducted. The results of the student survey show an overall positive evaluation of the simulation game by the students. However, the test also showed that the game takes a certain amount of time. Since only 15 of the approximately 30 students who tested the game participated in the evaluation, the results are not significant. T3 - Working Papers in Industrial Engineering - 5 Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-39057 SN - 2627-8375 CY - Düsseldorf ER - TY - JOUR A1 - Benim, Ali Cemal T1 - Introducing the “Mathematical Modelling and Numerical Simulation of Combustion and Fire” Section of the Journal Fire JF - fire Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40257 SN - 2571-6255 VL - 5 IS - 6 PB - MDPI ER - TY - CHAP A1 - Osterheider, Angela A1 - Klapperich, Holger A1 - Stein, Elisabeth A1 - Weiler, Tim A1 - Endter, Cordula A1 - Huldtgren, Alina A1 - Müller, Claudia 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 - Conceptualization of the Understanding of Participation and Co-Creation in Interdisciplinary Research Groups developing Digital Health Technology: An Exploratory Study BT - MuC '23: Proceedings of Mensch und Computer 2023, Rapperswil Switzerland, September 3 - 6, 2023 N2 - The healthcare sector's digital transformation necessitates the involvement of stakeholders through participation and co-creation processes. This study aims to investigate the understanding and implementation of participation and co-creation in the development of hybrid interaction technologies in healthcare. Eight interdisciplinary research projects were examined through semi-structured group interviews with 49 participants from academia, industry, and the application field. The interviews focused on participants' perspectives on project goals, user groups, access to the field, methods of participation and co-creation, and user motivation. The results highlight the diverse understandings of participation and co-creation, with some perceiving them as research-driven and others as already embedded in user- centered design. The projects emphasized user needs but often excluded stakeholders from collaborative decision-making. Challenges in achieving continuous involvement and co-decision were acknowledged. The findings underscore the need for reflexive practice and evaluation of participation and co-creation throughout the development process, as well as further research on participation across projects. By addressing these challenges and embracing participatory approaches, digital health applications can better address ethical concerns, build trust, and increase acceptance and adoption in the healthcare sector. Y1 - 2023 SN - 979-8-4007-0771-1 U6 - https://doi.org/10.1145/3603555.3608572 SP - 534 EP - 538 PB - Association for Computing Machinery CY - New York 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 - CHAP A1 - Huldtgren, Alina A1 - Klapperich, Holger A1 - Endter, Cordula ED - Maciaszek, Leszek A. ED - Mulvenna, Maurice D. ED - Ziefle, Martina T1 - Configuring Participatory Design of ICT for Aging Well as Matters of Care T2 - Information and Communication Technologies for Ageing Well and e-Health KW - User-centered design KW - Participatory design KW - Subjective wellbeing KW - Ageing KW - eHealth KW - ALL Y1 - 2023 SN - 978-3-031-37496-8 U6 - https://doi.org/10.1007/978-3-031-37496-8_9 N1 - This research is funded by the German Federal Ministry of Education and Research (NaDiA project, 01WJ2227A and CoCreHIT project 16SV8796). VL - Communications in Computer and Information Science, vol 1856 SP - 157 EP - 176 PB - Springer Nature CY - Cham ER - TY - CHAP A1 - von Berg, Markus A1 - Schwörer, Paul A1 - Prinz, Lukas A1 - Steffens, Jochen T1 - Analysis of physical and perceptual properties of room impulse responses: development of an online tool T2 - Forum Acusticuum 2023: 10th Convention of European Acoustics Association, Turin, Italy, 11th-15th September 2023 N2 - Over the past decades, research in room acoustics has established several derivative measures of an impulse response, some of which are incorporated in the ISO 3382 standards. These parameters intend to represent perceptual qualities, but were developed without a consistent modeling of room acoustical perception. More recent research proposed comprehensive inventories of room acoustic perception that are purely based on evaluations by human subjects, such as the Room Acoustical Quality Index (RAQI). In this work RA-QI scores acquired for 70 room impulse responses were predicted from room acoustical parameters. Except for Reverberance, the prediction of RAQI factors performed rather poor. In most cases, the sound source had a greater impact on RAQI scores. All analyses are published in an online tool, where users can upload omnidirectional and binaural impulse responses, and instantly obtain and visualize several physical descriptors, as well as predicted RAQI scores for three different sound sources. So far, acceptable prediction accuracy is achieved for Reverberance, Strength, Irregular Decay, Clarity and Intimacy. Larger data sets of evaluated impulse responses are required to improve the model performance and enable reliable predictions of room acoustical quality. Therefore, the administration of RAQI evaluations within the website is currently being developed. Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-41955 PB - EAA ER - TY - JOUR A1 - Brummel, Mattis A1 - Müller, Patrick A1 - Braun, Alexander T1 - Spatial precision and recall indices to assess the performance of instance segmentation algorithms JF - Electronic Imaging KW - Space-Variance KW - Computer Vision KW - IoU KW - image perturbations Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-41552 SN - 2470-1173 VL - 34 IS - 16 SP - 1 EP - 6 PB - Society for Imaging Science and Technology ER - TY - CHAP A1 - Nunn, Christian A1 - Kummert, Anton A1 - Müller, Dennis A1 - Meuter, Mirko A1 - Müller-Schneiders, Stefan T1 - An improved adaboost learning scheme using LDA features for object recognition T2 - Proceedings of the 12th International IEEE Conference on Intelligent Transportation Systems, St. Louis, MO, USA, October 3-7, 2009 Y1 - 2009 SN - 978-1-4244-5521-8 U6 - https://doi.org/10.1109/ITSC.2009.5309856 SP - 1 EP - 6 PB - IEEE CY - Piscataway, N.J. ER - TY - CHAP A1 - Gonner, Steffen A1 - Müller, Dennis A1 - Hold, Stephanie A1 - Meuter, Mirko A1 - Kummert, Anton T1 - Vehicle recognition and TTC estimation at night based on spotlight pairing T2 - Proceedings of the 12th International IEEE Conference on Intelligent Transportation Systems, St. Louis, MO, USA, October 3-7, 2009 Y1 - 2009 SN - 978-1-4244-5521-8 U6 - https://doi.org/10.1109/ITSC.2009.5309848 SP - 1 EP - 6 PB - IEEE CY - Piscataway, N.J. 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 - CHAP A1 - Meuter, Mirko A1 - Müller, Dennis A1 - Müller-Schneiders, Stefan A1 - Iurgel, Uri A1 - Park, Su-Birm A1 - Kummert, Anton ED - Bebis, George T1 - Pedestrian Tracking from a Moving Host Using Corner Points T2 - Advances in visual computing: Third international symposium ; proceedings Y1 - 2007 SN - 978-3-540-76855-5 U6 - https://doi.org/10.1007/978-3-540-76856-2_36 VL - Lecture notes in computer science, 4841 SP - 367 EP - 376 PB - Springer CY - Berlin; Heidelberg; New York ER - TY - CHAP A1 - Müller-Schneiders, Stefan A1 - Hold, Stephanie A1 - Meuter, Mirko A1 - Müller, Dennis A1 - Nunn, Christian T1 - Augmented reality in advanced driver assistance systems T2 - Conference on Artificial Intelligence, KI2009, Workshop Proceedings Y1 - 2009 ER - TY - CHAP A1 - Gavriilidis, Alexandros A1 - Müller, Dennis A1 - Müller-Schneiders, Stefan A1 - Velten, Jörg A1 - Kummert, Anton T1 - Sensor system blockage detection for night time headlight control based on camera and radar sensor information T2 - 15th International IEEE Conference on Intelligent Transportation Systems (ITSC), 2012, 16-19 Sept. 2012, Anchorage, Alaska, USA Y1 - 2012 SN - 978-1-4673-3063-3 U6 - https://doi.org/10.1109/ITSC.2012.6338854 SP - 78 EP - 83 PB - IEEE CY - Piscataway ER - TY - CHAP A1 - Müller, Dennis A1 - Pauli, Josef A1 - Nunn, Christian A1 - Gormer, Steffen A1 - Müller-Schneiders, Stefan T1 - Time to contact estimation using interest points T2 - Proceedings of the 12th International IEEE Conference on Intelligent Transportation Systems, St. Louis, MO, USA, October 3-7, 2009 Y1 - 2009 SN - 978-1-4244-5521-8 U6 - https://doi.org/10.1109/ITSC.2009.5309851 SP - 1 EP - 6 PB - IEEE CY - Piscataway, N.J. ER - TY - CHAP A1 - Müller, Dennis A1 - Pauli, Josef A1 - Meuter, Mirko A1 - Ghosh, Lali A1 - Müller-Schneiders, Stefan T1 - A generic video and radar data fusion system for improved target selection T2 - 2011 IEEE Intelligent Vehicles Symposium (IV) Y1 - 2011 SN - 978-1-4577-0891-6 U6 - https://doi.org/10.1109/IVS.2011.5940469 SP - 679 EP - 684 PB - IEEE ER - TY - CHAP A1 - Strygulec, Sarah A1 - Müller, Dennis A1 - Meuter, Mirko A1 - Nunn, Christian A1 - Ghosh, Shamila A1 - Wöhler, Christian T1 - Road boundary detection and tracking using monochrome camera images T2 - 2013 16th International Conference on Information Fusion (FUSION) Y1 - 2013 SN - 978-605-86311-1-3 SP - 864 EP - 870 PB - IEEE ER - TY - CHAP A1 - Müller, Dennis A1 - Meuter, Mirko A1 - Park, Su-Birm T1 - Motion segmentation using interest points T2 - 2008 IEEE Intelligent Vehicles Symposium Y1 - 2008 SN - 978-1-4244-2568-6 U6 - https://doi.org/10.1109/IVS.2008.4621239 SP - 19 EP - 24 PB - IEEE ER - TY - JOUR A1 - Kampes, Céline Fabienne T1 - Tail or no Tail? Applicability of the Long Tail Theory to the German Online Media Market JF - Central European Journal of Communication N2 - The Long Tail theory serves as an explanation for market change triggered through evolving online market conditions. However, it is often referred to without empirical validation, or with inconsistent findings on its applicability. Therefore, this paper analyses the applicability of the Long Tail theory to German online media offerings as of 2014 and 2016, focusing on offerings that serve information purposes (information offerings). Based on a unique dataset of commercially oriented online media offerings (Longitudinal IntermediaPlus 2014–2016), an analysis for three Long Tail characteristics (variety increase, opposing concentration between hit and niche offerings and niche market share increase) is conducted. By additionally distinguishing between political and entertainment-oriented information offerings as boundaries of democratized online market conditions the analysis reveals that the Long Tail theory is not fully applicable to any market sample, and especially not to politically oriented offerings. KW - online information offerings KW - Long Tail theory KW - entertainment KW - politics KW - Germany Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40123 SN - 1899-5101 N1 - This research was supported by the Digital Society research program funded by the Ministry of Culture and Science of the German State of North Rhine-Westphalia. VL - 13 IS - 3 SP - 371 EP - 389 PB - University Press of Wroclaw ER - TY - JOUR A1 - Ali, R. A1 - Farooq, A. A1 - Shahzad, A. A1 - Benim, Ali Cemal A1 - Iqbal, A. A1 - Razzaq, M. T1 - Computational approach on three-dimensional flow of couple-stress fluid with convective boundary conditions JF - Physica A: Statistical Mechanics and its Applications Y1 - 2022 U6 - https://doi.org/10.1016/j.physa.2019.124056 SN - 0378-4371 VL - 553 PB - Elsevier ER - TY - JOUR A1 - Queval, Loic A1 - Sotelo, Guilherme G. A1 - Kharmiz, Yassin A1 - Dias, Daniel H. N. A1 - Sass, Felipe A1 - Zermeno, Victor M. R. A1 - Gottkehaskamp, Raimund T1 - Optimization of the Superconducting Linear Magnetic Bearing of a Maglev Vehicle JF - IEEE Transactions on Applied Superconductivity KW - High temperature superconductors KW - linear magnetic bearing KW - maglev system KW - stochastic optimization KW - superconductor modeling Y1 - 2016 U6 - https://doi.org/10.1109/TASC.2016.2528989 SN - 1051-8223 VL - 26 IS - 3 PB - IEEE ER - TY - JOUR A1 - Bittremieux, Wout A1 - Schmid, Robin A1 - Huber, Florian A1 - van der Hooft, Justin J. J. A1 - Wang, Mingxun A1 - Dorrestein, Pieter C. T1 - Comparison of Cosine, Modified Cosine, and Neutral Loss Based Spectrum Alignment For Discovery of Structurally Related Molecules JF - Journal of the American Society for Mass Spectrometry KW - Modification KW - Precursors KW - Mass spectrometry KW - Anatomy KW - Peptides and proteins Y1 - 2022 U6 - https://doi.org/10.1021/jasms.2c00153 SN - 1044-0305 N1 - Eingereichte Version ist online verfügbar (Open Access Grün) https://doi.org/10.1101/2022.06.01.494370 unter CC BY 4.0 VL - 33 IS - 9 SP - 1733 EP - 1744 PB - American Chemical Society (ACS) ER - TY - JOUR A1 - Mabrouk, Riheb A1 - Benim, Ali Cemal A1 - Naji, Hassane A1 - Dhahri, Hacen T1 - Investigation of Pulsed Flow Effects on the Phase Change Within an Open-Cell Metal Foam Using Thermal Lattice Boltzmann Method JF - Transport in Porous Media KW - Thermal lattice Boltzmann method KW - Energetic and exergetic efficiencies KW - Local thermal non-equilibrium KW - Solidification process KW - Melting KW - Porous media KW - Pulsating flow Y1 - 2023 U6 - https://doi.org/10.1007/s11242-023-01903-x SN - 0169-3913 VL - 147 IS - 2 SP - 225 EP - 257 PB - Springer Nature ER - TY - JOUR A1 - Bittremieux, Wout A1 - Levitsky, Lev A1 - Pilz, Matteo A1 - Sachsenberg, Timo A1 - Huber, Florian A1 - Wang, Mingxun A1 - Dorrestein, Pieter C. T1 - Unified and Standardized Mass Spectrometry Data Processing in Python Using spectrum_utils JF - Journal of proteome research KW - proteomics KW - mass spectrometry KW - metabolomics KW - Python KW - open source Y1 - 2023 U6 - https://doi.org/10.1021/acs.jproteome.2c00632 SN - 1535-3893 N1 - Eingereichte Version ist online verfügbar (Open Access Grün) unter: https://www.biorxiv.org/content/10.1101/2022.10.04.510894v1 VL - 22 IS - 2 SP - 625 EP - 631 PB - American Chemical Society (ACS) ER - TY - JOUR A1 - Queval, Loic A1 - Coty, Alain A1 - Vido, Lionel A1 - Gottkehaskamp, Raimund A1 - Multon, Bernard T1 - A Switched Reluctance Motor Drive Using Photovoltaic Transistors: Principle, Prototype, Experimental, and Numerical Results JF - IEEE Transactions on Industry Applications Y1 - 2017 U6 - https://doi.org/10.1109/TIA.2017.2718493 SN - 0093-9994 VL - 53 IS - 5 SP - 4886 EP - 4893 PB - IEEE ER - TY - JOUR A1 - Bhattacharyya, Suvanjan A1 - Chattopadhyay, Himadri A1 - Benim, Ali Cemal T1 - Computational investigation of heat transfer enhancement by alternating inclined ribs in tubular heat exchanger JF - Progress in Computational Fluid Dynamics KW - CFD KW - forced convection KW - transitional turbulence KW - inclined ribs KW - heat transfer enhancement Y1 - 2017 U6 - https://doi.org/10.1504/PCFD.2017.088818 SN - 1468-4349 VL - 17 IS - 6 SP - 390 EP - 396 PB - Inderscience Enterprises Limited ER - TY - JOUR A1 - Farooq, Asma A1 - Ali, Ramzan A1 - Benim, Ali Cemal T1 - Soret and Dufour effects on three dimensional Oldroyd-B fluid JF - Physica A: Statistical Mechanics and its Applications Y1 - 2018 U6 - https://doi.org/10.1016/j.physa.2018.02.204 SN - 0378-4371 VL - 503 SP - 345 EP - 354 PB - Elsevier ER - TY - JOUR A1 - Biswas, Nirmalendu A1 - Mandal, Dipak Kumar A1 - Manna, Nirmal K. A1 - Benim, Ali Cemal T1 - Enhanced energy and mass transport dynamics in a thermo-magneto-bioconvective porous system containing oxytactic bacteria and nanoparticles: cleaner energy application JF - Energy Y1 - 2023 U6 - https://doi.org/10.1016/j.energy.2022.125775 SN - 0360-5442 VL - 263 IS - B PB - Elsevier ER - TY - JOUR A1 - Moellmann, Anne A1 - Dietel, Fanny A. A1 - Hunger, Antje A1 - Buhlmann, Ulrike T1 - Prevalence of body dysmorphic disorder and associated features in German adolescents: A self-report survey JF - Psychiatry Research Y1 - 2017 U6 - https://doi.org/10.1016/j.psychres.2017.04.063 SN - 0165-1781 VL - 254 SP - 263 EP - 267 ER - TY - JOUR A1 - Schwung, Dorothea A1 - Yuwono, Steve A1 - Schwung, Andreas A1 - Ding, Steven X. T1 - PLC-Informed Distributed Game Theoretic Learning of Energy-Optimal Production Policies JF - IEEE Transactions on Cybernetics Y1 - 2022 U6 - https://doi.org/10.1109/TCYB.2022.3179950 SN - 2168-2267 SP - 1 EP - 14 PB - IEEE ER - TY - JOUR A1 - Tiator, Marcel A1 - Kerkmann, Anna Maria A1 - Geiger, Christian A1 - Grimm, Paul T1 - US2RO: Union of Superpoints to Recognize Objects JF - International Journal of Semantic Computing KW - MIREVI Y1 - 2021 U6 - https://doi.org/10.1142/S1793351X21400146 SN - 1793-351X VL - 15 IS - 04 SP - 513 EP - 537 PB - World Scientific Publishing ER - TY - JOUR A1 - Reims, Nancy A1 - Tophoven, Silke T1 - Double Burden of Disability and Poverty: Does Vocational Rehabilitation Ease the School–to–Work Transition? JF - Social Inclusion N2 - Poor young people more often face health difficulties, (learning) disabilities, and are overrepresented in special schools. Consequently, youth from poor households disproportionately frequently participate in disability‐specific programs aiming to improve their educational levels and labor market opportunities. They face a double burden of disability and poverty. In our study, we look at poor and non‐poor youth with disabilities (YPWD) who participate in vocational rehabilitation (VR) and whether VR helps them (a) in transitioning into employment and (b) in leaving poverty. We examine the association between the receipt of initial basic income support (BIS) as a poverty indicator, later labor market outcomes, and earned vocational qualification using administrative data. We make use of a sample of all persons accepted for VR in 2010 (N = 36,645). We employ logit models on VR attendees’ labor market outcomes three and five years after being accepted for VR as well as on their earned vocational qualifications. Beside initial poverty status, we control for educational level, type, and degree of disability and program pattern during the VR process. Our findings show that YPWD from poor households have a decreased likelihood of a vocational certificate and employment. Additionally, they are more likely to receive BIS than young people not from poor households and thus more likely to remain poor. In conclusion, VR seems to support poor YPWD less in their school‐to‐work transitions. Thus, disability‐specific programs should be more tailored to the social situations of participants, and counsellors should be more sensitive to their social backgrounds. KW - DOAJ KW - youth KW - vocational rehabilitation KW - labor market integration KW - school‐to‐work transition KW - germany KW - basic income support Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40131 SN - 2183-2803 N1 - This article is part of the issue “Promoting Inclusion and Equality in Education” edited Allen Thurston (Queen’s University Belfast, UK) and Tien‐Hui Chiang (Anhui Normal University, China). VL - 9 IS - 4 SP - 92 EP - 102 PB - Cogitatio ER - TY - JOUR A1 - Schreiber, Andreas A1 - Struminksi, Regina T1 - Visualizing the Provenance of Personal Data Using Comics JF - Computers KW - DOAJ Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40286 SN - 2073-431X VL - 7 IS - 1 PB - MDPI ER - TY - JOUR A1 - Vocks, Silja A1 - Kosfelder, Joachim A1 - Wucherer, Maike A1 - Wächter, Alexandra T1 - Does habitual body avoidance and checking behavior influence the decrease of negative emotions during body exposure in eating disorders? JF - Psychotherapy research Y1 - 2008 U6 - https://doi.org/10.1080/10503300701797008 VL - 18 IS - 4 SP - 412 EP - 419 PB - Taylor & Francis ER - TY - JOUR A1 - Grote-Ramm, Wolfgang A1 - Lanuschny, David A1 - Lorenzen, Finn A1 - Brito, Marcel Oliveira A1 - Schoenig, Felix T1 - Continual learning for neural regression networks to cope with concept drift in industrial processes using convex optimisation JF - Engineering Applications of Artificial Intelligence Y1 - 2022 U6 - https://doi.org/10.1016/j.engappai.2023.105927 SN - 0952-1976 VL - 120 PB - Elsevier ER - TY - JOUR A1 - Bhattacharyya, Suvanjan A1 - Benim, Ali Cemal A1 - Pathak, Manabendra A1 - Chamoli, Sunil A1 - Gupta, Ashutosh T1 - Thermohydraulic characteristics of inline and staggered angular cut baffle inserts in the turbulent flow regime JF - Journal of Thermal Analysis and Calorimetry Y1 - 2020 U6 - https://doi.org/10.1007/s10973-019-09094-8 SN - 1388-6150 VL - 140 IS - 3 SP - 1519 EP - 1536 PB - Springer Nature ER - TY - JOUR A1 - Laux, Christoph A1 - Gotter, Andreas A1 - Eckert, Frank A1 - Neef, Matthias T1 - Experimental results of a low-pressure steam Rankine cycle with a novel water lubricated radial inflow turbine for the waste heat utilization of internal combustion engines JF - Energy Conversion and Management Y1 - 2022 U6 - https://doi.org/10.1016/j.enconman.2022.116265 SN - 0196-8904 VL - 271 PB - Elsevier ER - TY - JOUR A1 - Nebel, Janine A1 - Schmidt, Stefan A1 - Pan, Qiushi A1 - Lotz, Katrin A1 - Kaluza, Stefan A1 - Muhler, Martin T1 - On the role of cobalt carbidization in higher alcohol synthesis over hydrotalcite-based Co-Cu catalysts JF - Chinese Journal of Catalysis Y1 - 2019 U6 - https://doi.org/10.1016/S1872-2067(19)63344-9 SN - 1872-2067 N1 - The research project is funded by the Federal Ministry of Education and Research (Bundesministerium für Bildung und Forschung, BMBF, Verbundvorhaben Carbon2Chem®, FKZ: 03EK3041). VL - 40 IS - 11 SP - 1731 EP - 1740 PB - Elsevier ER - TY - JOUR A1 - Chyle, Fabian A1 - Ostermann, Thomas A1 - Boehm, Katja T1 - Body- and movement-based interventions with male offenders - a narrative review JF - International Journal of Comparative and Applied Criminal Justice Y1 - 2018 U6 - https://doi.org/10.1080/01924036.2017.1364278 SN - 0192-4036 VL - 42 IS - 4 SP - 359 EP - 375 PB - Taylor & Francis ER - TY - JOUR A1 - Anton, Johan A1 - Nebel, Janine A1 - Göbel, Christoph A1 - Gabrysch, Thomas A1 - Song, Huiqing A1 - Froese, Christian A1 - Ruland, Holger A1 - Muhler, Martin A1 - Kaluza, Stefan T1 - CO Hydrogenation to Higher Alcohols over Cu–Co-Based Catalysts Derived from Hydrotalcite-Type Precursors JF - Topics in Catalysis Y1 - 2016 UR - https://doi.org/10.1007/s11244-016-0663-2 U6 - https://doi.org/10.1007/s11244-016-0663-2 VL - 59 IS - 15-16 SP - 1361 EP - 1370 PB - Springer Nature ER - TY - CHAP A1 - Langmann, Reinhard A1 - Stiller, Michael ED - Auer, Michel E. ED - Zutin, Danilo G. T1 - Cloud-based industrial control services - The next generation PLC? T2 - Online Engineering & Internet of Things: Proceedings of the 14th International Conference on Remote Engineering and Virtual Instrumentation REV 2017, held 15–17 March 2017, Columbia University, New York, USA Y1 - 2017 SN - 978-3-319-64351-9 U6 - https://doi.org/10.1007/978-3-319-64352-6_1 SN - 2190-4111 VL - Lecture Notes in Networks and Systems : 22 SP - 3 EP - 18 PB - Springer Nature CY - Cham ER - TY - JOUR A1 - Bhattacharyya, Suvanjan A1 - Benim, Ali Cemal A1 - Chattopadhyay, Himadri A1 - Banerjee, Arnab T1 - Experimental investigation of heat transfer performance of corrugated tube with spring tape inserts JF - Experimental Heat Transfer Y1 - 2019 U6 - https://doi.org/10.1080/08916152.2018.1531955 SN - 0891-6152 VL - 32 IS - 5 SP - 411 EP - 425 PB - Taylor & Francis ER - TY - JOUR A1 - Benim, Ali Cemal A1 - Canal, Cansu Deniz A1 - Boke, Yakup Erhan T1 - Computational investigation of oxy-combustion of pulverized coal and biomass in a swirl burner JF - Energy Y1 - 2022 U6 - https://doi.org/10.1016/j.energy.2021.121852 SN - 0360-5442 VL - 238 IS - C PB - Elsevier ER - TY - JOUR A1 - Tarlao, Cynthia A1 - Steffens, Jochen A1 - Guastavino, Catherine T1 - Investigating contextual influences on urban soundscape evaluations with structural equation modeling JF - Building and Environment KW - Soundscape KW - Extraversion KW - Social interaction KW - Structural equation modeling KW - Measurement invariance KW - ISAVE Y1 - 2021 U6 - https://doi.org/10.1016/j.buildenv.2020.107490 SN - 0360-1323 N1 - Manuskriptversion ist als Open Access verfügbar (Open Access Grün): https://escholarship.mcgill.ca/concern/articles/q811kq411?locale=en VL - 188 PB - Elsevier ER - TY - JOUR A1 - Basaran, Anil A1 - Benim, Ali Cemal A1 - Yurddas, Ali T1 - Numerical Simulation of the Condensation Flow of the Isobutane (R600a) inside Microchannel JF - Heat Transfer Engineering Y1 - 2021 U6 - https://doi.org/10.1080/01457632.2021.1874668 SN - 0145-7632 VL - 43 IS - 3-5 SP - 337 EP - 361 PB - Taylor & Francis ER - TY - JOUR A1 - Keshavanarayana, Pradeep A1 - Ruess, Martin A1 - de Borst, René T1 - A feedback-loop extended stress fiber growth model with focal adhesion formation JF - International Journal of Solids and Structures Y1 - 2017 U6 - https://doi.org/10.1016/j.ijsolstr.2017.08.023 SN - 0020-7683 N1 - Open Archive VL - 128 SP - 160 EP - 173 PB - Elsevier ER - TY - JOUR A1 - Mabrouk, Riheb A1 - Naji, Hassane A1 - Benim, Ali Cemal A1 - Dhahri, Hacen T1 - A State of the Art Review on Sensible and Latent Heat Thermal Energy Storage Processes in Porous Media: Mesoscopic Simulation JF - Applied Sciences KW - DOAJ Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40343 VL - 12 IS - 14 PB - MDPI ER - TY - JOUR A1 - Huber, Florian A1 - van der Burg, Sven A1 - van der Hooft, Justin J. J. A1 - Ridder, Lars T1 - MS2DeepScore: a novel deep learning similarity measure to compare tandem mass spectra JF - Journal of Cheminformatics N2 - Mass spectrometry data is one of the key sources of information in many workflows in medicine and across the life sciences. Mass fragmentation spectra are generally considered to be characteristic signatures of the chemical compound they originate from, yet the chemical structure itself usually cannot be easily deduced from the spectrum. Often, spectral similarity measures are used as a proxy for structural similarity but this approach is strongly limited by a generally poor correlation between both metrics. Here, we propose MS2DeepScore: a novel Siamese neural network to predict the structural similarity between two chemical structures solely based on their MS/MS fragmentation spectra. Using a cleaned dataset of > 100,000 mass spectra of about 15,000 unique known compounds, we trained MS2DeepScore to predict structural similarity scores for spectrum pairs with high accuracy. In addition, sampling different model varieties through Monte-Carlo Dropout is used to further improve the predictions and assess the model's prediction uncertainty. On 3600 spectra of 500 unseen compounds, MS2DeepScore is able to identify highly-reliable structural matches and to predict Tanimoto scores for pairs of molecules based on their fragment spectra with a root mean squared error of about 0.15. Furthermore, the prediction uncertainty estimate can be used to select a subset of predictions with a root mean squared error of about 0.1. Furthermore, we demonstrate that MS2DeepScore outperforms classical spectral similarity measures in retrieving chemically related compound pairs from large mass spectral datasets, thereby illustrating its potential for spectral library matching. Finally, MS2DeepScore can also be used to create chemically meaningful mass spectral embeddings that could be used to cluster large numbers of spectra. Added to the recently introduced unsupervised Spec2Vec metric, we believe that machine learning-supported mass spectral similarity measures have great potential for a range of metabolomics data processing pipelines. KW - DOAJ Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-34847 UR - http://www.ncbi.nlm.nih.gov/pubmed/34715914 SN - 1758-2946 N1 - J.J.J.v.d.H. acknowledges funding from an ASDI eScience grant, ASDI.2017.030, from the Netherlands eScience Center. VL - 13 IS - 1 PB - Cold Spring Harbor Laboratory ER - TY - JOUR A1 - Steffens, Jochen A1 - Wilczek, Tobias A1 - Weinzierl, Stefan T1 - Junk Food or Haute Cuisine to the Ear? – Investigating the Relationship Between Room Acoustics, Soundscape, Non-Acoustical Factors, and the Perceived Quality of Restaurants JF - Frontiers in Built Environment N2 - Sound and music are well-studied aspects of the quality of experience in restaurants; the role of the room acoustical conditions, their influence on the visitors’ soundscape evaluation and their impact on the overall customer satisfaction in restaurants, however, has received less scientific attention. The present field study therefore investigated whether sound pressure level, reverberation time, and soundscape pleasantness can predict factors associated with overall restaurant quality. In total, 142 persons visiting 12 restaurants in Berlin rated relevant acoustical and non-acoustical factors associated with restaurant quality. Simultaneously, the A-weighted sound pressure level (LA,eq,15) was measured, and the reverberation time in the occupied state (T20,occ) was obtained by measurements performed in the unoccupied room and a subsequent calculation of the occupied condition according to DIN 18041. Results from linear mixed-effects models revealed that both the LA,eq,15 and T20,occ had a significant influence on soundscape pleasantness and eventfulness, whereby the effect of T20,occ was meditated by the LA,eq,15. Also, the LA,eq,15 as well as soundscape pleasantness were significant predictors of overall restaurant quality. A comprehensive structural equation model including both acoustical and non-acoustical factors, however, indicates that the effect of soundscape pleasantness on overall restaurant quality is mediated by the restaurant’s atmosphere. Our results support and extend previous findings which suggest that the acoustical design of restaurants involves a trade-off between comfort and liveliness, depending on the desired character of the place. KW - DOAJ Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-32115 SN - 2297-3362 N1 - The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fbuil.2021.676009/full#supplementary-material; ut:000655121500001 VL - 676009 PB - Frontiers ER - TY - JOUR A1 - Haberfehlner, Helga A1 - van de Ven, Shankara S. A1 - van der Burg, Sven A. A1 - Huber, Florian A1 - Georgievska, Sonja A1 - Aleo, Ignazio A1 - Harlaar, Jaap A1 - Bonouvrié, Laura A. A1 - van der Krogt, Marjolein M. A1 - Buizer, Annemieke I. T1 - Towards automated video-based assessment of dystonia in dyskinetic cerebral palsy: A novel approach using markerless motion tracking and machine learning JF - Frontiers in Robotics and AI Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40592 SN - 2296-9144 VL - 10 PB - Frontiers ER - TY - JOUR A1 - Biedermann, Till M. A1 - Czeckay, Pasquale A1 - Hintzen, Nils A1 - Kameier, Frank A1 - Paschereit, C. O. T1 - Applicability of Aeroacoustic Scaling Laws of Leading Edge Serrations for Rotating Applications JF - acoustics KW - DOAJ KW - ISAVE Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40311 SN - 2624-599X VL - 2 IS - 3 SP - 579 EP - 594 PB - MDPI ER - TY - THES A1 - Blum, Jessica T1 - Queering Empowerment and Accountability - Towards a Decolonial Peacebuilding-Development Praxis Nexus T3 - Hervorragende Abschlussarbeiten im Fachbereich Sozial- und Kulturwissenschaften - 134 KW - Queer KW - Empowerment KW - Accountability KW - Decolonial KW - Peacebuilding-Development Nexus Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-38517 CY - Düsseldorf ER - TY - JOUR A1 - Wojciechowski, Manfred A1 - Pogscheba, Patrick T1 - Building a COVID-Safe Navigation App Using a Meta-Model Based Context Server JF - sensors N2 - Building context-aware applications is an already widely researched topic. It is our belief that context awareness has the potential to supplement the Internet of Things, when a suitable methodology including supporting tools will ease the development of context-aware applications. We believe that a meta-model based approach can be key to achieving this goal. In this paper, we present our meta-model based methodology, which allows us to define and build application-specific context models and the integration of sensor data without any programming. We describe how that methodology is applied with the implementation of a relatively simple context-aware COVID-safe navigation app. The outcome showed that programmers with no experience in context-awareness were able to understand the concepts easily and were able to effectively use it after receiving a short training. Therefore, context-awareness is able to be implemented within a short amount of time. We conclude that this can also be the case for the development of other context-aware applications, which have the same context-awareness characteristics. We have also identified further optimization potential, which we will discuss at the conclusion of this article. KW - context awareness KW - internet of things KW - development methodology KW - meta model KW - context query language Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-39570 SN - 1424-8220 VL - 22 IS - 24 SP - 1 EP - 14 PB - MDPI ER - TY - JOUR A1 - Failing, Luisa A1 - Kaluza, Stefan A1 - Strucks, Peter T1 - Catalytic CO2 methanation: Providing optimal test conditions for kinetic investigations JF - Chemie Ingenieur Technik N2 - In the context of using renewable energies and recycling climate-changing gases, methanation of CO2 provides one possibility. However, volatile availability of renewable energies for hydrogen production and fluctuating CO2streams from different sources lead to enhanced demand in investigating the influence of dynamic process operation on the catalyst performance, including detailed kinetic characterization. Reliable kinetic measurements require isothermal temperature control and absence of macrokinetic diffusion limitations. Both were investigated in this work while the determination of steady-state kinetic parameters is part of ongoing studies. Furthermore, a detailed analysis with respect to the long-term-stability of the nickel-based catalyst was performed KW - CO2 methanation KW - Kinetics KW - Long-term stability KW - Ni catalyst KW - Power-to-Gas Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40026 SN - 1522-2640 VL - 95 IS - 5 SP - 749 EP - 753 PB - Wiley ER - TY - JOUR A1 - Niemann, Joerg A1 - Fussenecker, Claudia A1 - Schloesser, Martin A1 - Ocakci, Elif T1 - THE WORKERS PERSPECTIVE - EYE TRACKING IN PRODUCTION ENVIRONMENTS JF - ACTA TECHNICA NAPOCENSIS SERIES-APPLIED MATHEMATICS MECHANICS AND ENGINEERING Y1 - 2021 SN - 1221-5872 VL - 64 IS - 1 SP - 7 EP - 14 PB - Technical University of Cluj-Napoca ER - TY - JOUR A1 - Manthe, Barbara T1 - On the Pathway to Violence: West German Right-Wing Terrorism in the 1970s JF - Terrorism and Political Violence KW - Forena Y1 - 2021 U6 - https://doi.org/10.1080/09546553.2018.1520701 SN - 0954-6553 VL - 33 IS - 1 SP - 49 EP - 70 PB - Taylor & Francis ER - TY - JOUR A1 - Pfeiffelmann, Bjorn A1 - Ozman, Cansu A1 - Benim, Ali Cemal A1 - Joos, Franz T1 - Analysis of the effect of nonuniform surface temperature distribution on the performance of a thermoelectric generator JF - Sustainable Energy Technologies and Assessments Y1 - 2022 U6 - https://doi.org/10.1016/j.seta.2022.102375 SN - 2213-1388 VL - 53 IS - A PB - Elsevier ER - TY - GEN A1 - Versümer, Siegbert A1 - Steffens, Jochen A1 - Rosenthal, Fabian T1 - Extensive crowdsourced dataset of in-situ evaluated binaural soundscapes of private dwellings containing subjective sound-related and situational ratings along with person factors to study time-varying influences on sound perception - research data N2 - The soundscape approach highlights the role of situational factors in sound evaluations; however, only a few studies have applied a multi‐domain approach including sound‐related, person‐related, and time‐varying situational variables. Therefore, we conducted a study based on the Experience Sampling Method to measure the relative contribution of a broad range of potentially relevant acoustic and non‐auditory variables in predicting indoor soundscape evaluations. Here we present the comprehensive dataset for which 105 participants reported temporally (rather) stable trait variables such as noise sensitivity, trait affect, and quality of life. They rated 6.594 situations regarding the soundscape standard dimensions, perceived loudness, and the saliency of its sound components and evaluated situational variables such as state affect, perceived control, activity, and location. To complement these subject‐centered data, we additionally crowdsourced object‐centered data by having participants make binaural measurements of each indoor soundscape at their homes using a low‐(self‐)noise recorder. These recordings were used to compute (psycho‐)acoustical indices such as the energetically averaged loudness level, the A‐weighted energetically averaged equivalent continuous sound pressure level, and the A‐weighted five‐percent exceedance level. This complex hierarchical data can be used to investigate time‐varying non‐auditory influences on sound perception and to develop soundscape indicators based on the binaural recordings to predict soundscape evaluations. KW - Dataset KW - soundscape KW - person factors KW - indoor soundscape KW - acoustic environment KW - non-auditory factors KW - situational factors KW - binaural recording KW - Experience Sampling Method KW - acoustic descriptors Y1 - 2023 U6 - https://doi.org/10.5281/zenodo.7193937 N1 - This study was sponsored by the German Federal Ministry of Education and Research. “FHprofUnt” funding code: 13FH729IX6. Versions: Version V.01.1 10.5281/zenodo.7858848 Apr 25, 2023 Version V.01.0 10.5281/zenodo.7193938 Mar 7, 2023 CY - Zenodo ET - V.01.1 ER - TY - JOUR A1 - Eilert, Eva A1 - Rolf, Theresa A1 - Heumaier, Andreas A1 - Hollenberg, Cornelis P. A1 - Piontek, Michael A1 - Suckow, Manfred T1 - Improved processing of secretory proteins in Hansenula polymorpha by sequence variation near the processing site of the alpha mating factor prepro sequence JF - Journal of biotechnology N2 - The literature as well as databases are ambiguous about the exact start of human interleukin-6 (IL-6)--three possibilities for the initiation of the mature protein are described. These three variants of IL-6, different in the exact initiation of the mature protein (A28, P29, or V30), were expressed in Hansenula polymorpha using the Saccharomyces cerevisiae MFα prepro sequence instead of the homologous pre sequence. All three IL-6 variants were secreted but the processing by the Kex2 protease showed significant differences. V30-IL-6 showed correctly processed material but also a molecule species of higher molecular weight indicating incomplete processing of the MFα pro peptide. P29-IL-6 did not yield any correctly processed IL-6, instead only the unprocessed pro form was found in the culture supernatant. Only A28-IL-6 led to 100% correctly processed material. N-terminal sequencing of this material revealed a start at V30--obviously the first two amino acids (Ala28-Pro29) have been removed by a so far unknown protease. Thus expression of both A28-IL-6 and V30-IL-6 as MFα prepro fusion proteins resulted in the very same mature V30-IL-6, however, the ratio of correctly processed molecules was significantly higher in the case of A28-IL-6. The expression of an MFα prepro-interferon α-2a (IFNα-2a) fusion protein in H. polymorpha leads to about 50% correctly processed molecules and 50% misprocessed forms which contain part of the pro peptide at the N-termini. The insertion of A28 and P29 of IL-6 between the pro peptide and the start of the mature IFNα-2a led to correct processing and elimination of all high molecular weight isoforms observed in earlier experiments. Y1 - 2013 UR - http://www.ncbi.nlm.nih.gov/pubmed/22982399 U6 - https://doi.org/10.1016/j.jbiotec.2012.08.024 VL - 167 IS - 2 SP - 94 EP - 100 PB - Elsevier ER - TY - JOUR A1 - Eilert, Eva A1 - Kranz, Andreas A1 - Hollenberg, Cornelis P. A1 - Piontek, Michael A1 - Suckow, Manfred T1 - Synthesis and release of the bacterial compatible solute 5-hydroxyectoine in Hansenula polymorpha JF - Journal of biotechnology N2 - Ectoine and 5-hydroxyectoine belong to the family of compatible solutes which are known to mainly contribute to the adaptation of the cell to osmotic stress by mediation of a constant turgor. In addition the cell's essential functions are maintained under stress conditions like high salinity, heat or aridity stress. Hansenula polymorpha was engineered to catalyze the transformation of monomeric substrates to 5-hydroxyectoine. For this purpose four genes encoding the enzymes of the 5-hydroxyectoine biosynthesis pathway of Halomonas elongata, EctA, EctB, EctC, and EctD, were inserted into the genome of H. polymorpha. Subsequently the syntheses of ectoine and 5-hydroxyectoine were analyzed and optimized. We showed that H. polymorpha is a suitable system for recombinant 5-hydroxyectoine synthesis in gram per liter scale (2.8 g L⁻¹ culture supernatant, 365 μmol/g dcw) in which almost 100% conversion of ectoine to 5-hydroxyectoine without necessity of high salinity were achieved. Y1 - 2013 UR - http://www.ncbi.nlm.nih.gov/pubmed/23467000 U6 - https://doi.org/10.1016/j.jbiotec.2013.02.005 VL - 167 IS - 2 SP - 85 EP - 93 PB - Elsevier ER - TY - JOUR A1 - Eilert, Eva A1 - Hollenberg, Cornelis P. A1 - Piontek, Michael A1 - Suckow, Manfred T1 - The use of highly expressed FTH1 as carrier protein for cytosolic targeting in Hansenula polymorpha JF - Journal of biotechnology N2 - The iron storage protein ferritin is a member of the non-heme iron protein family. It can store and release iron, therefore it prevents the cell from damage caused by iron-dioxygen reactions as well as it provides iron for biological processing. To study whether the human ferritin heavy chain (FTH1) can be expressed in Hansenula polymorpha, we integrated an expression cassette for FTH1 and analyzed the protein expression. We found very efficient expression of FTH1 and obtained yields up to 1.9 g/L under non-optimized conditions. Based on this result we designed a FTH1-PTH fusion protein to successfully express the parathyroid hormone fragment 1-34 (PTH) for the first time intracellular in H. polymorpha. Y1 - 2012 UR - http://www.ncbi.nlm.nih.gov/pubmed/22212821 U6 - https://doi.org/10.1016/j.jbiotec.2011.12.014 VL - 159 IS - 3 SP - 172 EP - 176 PB - Elsevier ER - TY - GEN A1 - Deckert, Carsten T1 - Now What You Hear Is Not a Test: The Invention and Commercialization of Rap Music T3 - Business Cases in Industrial Engineering - 2 KW - Business Case KW - Musikindustrie KW - Entrepreneurship KW - Innovation Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-41134 CY - Düsseldorf ER - TY - GEN A1 - Deckert, Carsten A1 - Phan Ngoc, Duc Anh T1 - PlayStation 4 vs. Xbox One: Competitive Analysis of the Video Game Industry T3 - Business Cases in Industrial Engineering - 3 KW - Business Case KW - Strategy KW - Delta Model KW - Video Game Industry Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-41142 CY - Düsseldorf ER - TY - JOUR A1 - Steffens, Jochen A1 - Anglada-Tort, Manuel T1 - The effect of visual recognition on listener choices when searching for music in playlists JF - Psychology of Aesthetics, Creativity, and the Arts Y1 - 2023 U6 - https://doi.org/10.1037/aca0000562 SN - 1931-3896 PB - American Psychological Association ER - TY - THES A1 - Obry, Yannick T1 - Music Streaming Adaption – Drivers of Behavioral Intention N2 - Music consumption and distribution has changed drastically in the last twenty years due to digitalization. Instead of buying music products, like CDs or even downloaded digital music files, today music is predominantly distributed via online music streaming. Therefore, it is mandatory for the music industry as well as researchers to determine which factors are affecting consumers intention to use music streaming services. This study aims to investigate drivers of Behavioral Intention (BI) to use a music streaming service. Particularly, aspects of social preferences in the context of music streaming will be explored. Therefore, a research model is created, based on the Value-based Adoption Model (VAM) (Kim et al., 2007) with an extension to take social factors into account. An online questionnaire with 102 participants was conducted to test the research model and the corresponding hypotheses. In order to evaluate reliable indications, some adjustments needed to be made resulting in a corrected research model. The final independent variables of the corrected model are Perceived Value (PV) (which is composed of Perceived Usefulness (PU) and Perceived Enjoyment (PE)), Perceived Ease of Use (PEU), Perceived Price Value (PPV), Facilitating Conditions (FC), Perceived Fairness (PF), Social Connectivity (SC), and Peer-Effects (PFX). The empirical results show that Perceived Value (PV), Perceived Price Value (PPV), and Perceived Fairness (PF) are determinants of consumers Behavioral Intention (BI) to use a music streaming service. KW - Bachelor KW - SoSe23 Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-41326 CY - Düsseldorf ER - TY - JOUR A1 - Steffens, Jochen A1 - Dinneen, Jesse David A1 - Donner, Sascha A1 - Potthoff, Tom T1 - ‘Alexa, play metal’: exploring music selection and personal information management via voice assistants JF - Information Research an international electronic journal N2 - Introduction. Music streaming services have changed how music is played and perceived, but also how it is managed by individuals. Voice interfaces to such services are becoming increasingly com-mon, for example through voice assistants on mobile and smart devices, and have the poten-tial to further change personal music management by introducing new beneficial features and new challenges. Method. To explore the implications of voice assistants for personal music listening and management we surveyed 248 participants online and in a lab setting to investigate (a) in which situa-tions people use voice assistants to play music, (b) how the situations compare to established activities common during non-voice assistant music listening, and (c) what kinds of com-mands they use. Analysis. We categorised 653 situations of voice assistant use, which reflect differences to non-voice assistant music listening, and established 11 command types, which mostly reflect finding or refinding activities but also indicate keeping and organisation activities. Results. Voice assistants have some benefits for music listening and personal music management, but also a notable lack of support for traditional personal information management activities, like browsing, that are common when managing music. Conclusion. Having characterised the use of voice assistants to play music, we consider their role in per-sonal music management and make suggestions for improved design and future research. Y1 - 2024 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-44639 SN - 1368-1613 N1 - HTML-Version auf der Webseite verfügbar: https://informationr.net/infres/article/view/646/351 VL - 29 IS - 2 SP - 50 EP - 70 PB - University of Boras, Faculty of Librarianship, Information, Education and IT ER - TY - JOUR A1 - Deckert, Carsten A1 - Schomaker, Rahel M. T1 - Cultural tightness–looseness and national innovativeness: impacts of tolerance and diversity of opinion JF - Journal of Innovation and Entrepreneurship N2 - The links between innovativeness as a driver of economic performance, and the determinants of innovativeness have been investigated by management scholars and economists for decades, focusing mostly on “hard factors” as investment in research and development, or education. Focusing on a relatively neglected, but in times of globalization even more important aspect, the infuence of cultural characteristics on innovativeness, we apply diferent econometric models to test for links between cultural tightness and looseness on the one hand, and national innovativeness on the other hand. We fnd that cultural tightness—in the sense of homogenous and intolerant societies—has a negative link to national innovativeness, while cultural looseness—in the sense of tolerant and diverse societies—displays a positive link to national innovativeness. KW - DOAJ KW - DEAL KW - Innovation KW - Kultur KW - Toleranz KW - Diversity of opinion Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-36515 SN - 2192-5372 VL - 11 SP - 1 EP - 19 PB - Springer Nature ER - TY - JOUR A1 - Nyssen Guillén, Viola Isabel A1 - Deckert, Carsten T1 - Cultural influence on innovativeness - links between “The Culture Map” and the “Global Innovation Index” JF - International Journal of Corporate Social Responsibility KW - culture KW - culture dimensions KW - Innovativeness KW - DOAJ Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-29121 SN - 2366-0074 VL - 6 IS - 1 PB - Springer Nature ER - TY - JOUR A1 - Biswas, Nirmalendu A1 - Mandal, Dipak Kumar A1 - Manna, Nirmal K. A1 - Benim, Ali Cemal T1 - Magneto-hydrothermal triple-convection in a W-shaped porous cavity containing oxytactic bacteria JF - scientific reports N2 - Bioconvective heat and mass transport phenomena have recently been the subject of interest in diverse fields of applications pertaining to the motion of fluids and their thermophysical properties. The transport processes in a system involving triple convective phenomena, irregular geometry, and boundary conditions constitute a complex phenomenon. This work aims to explore the mixed thermo-bioconvection of magnetically susceptible fluid containing copper nanoparticles and oxytactic bacteria in a novel W-shaped porous cavity. The buoyant convention is generated due to the isothermal heating at the wavy bottom wall, whereas the mixed convection is induced due to the shearing motion of the top-cooled sliding wall. Furthermore, the bioconvection is induced due to the manifestation of oxytactic bacteria or organisms. The inclined sidewalls are insulated. The geometry is packed with water based Cu nanoparticle mixed porous structure, which is subjected to a magnetizing field acted horizontally. The complex transport equations are transformed into nondimensional forms, which are then computed using the finite volume-based developed code. The coupled triple-convective flow physics are explored for a wide range of involved controlling parameters, which could provide helpful insight to the system designer for its proper operation. The shape of geometry can be considered one of the important parameters to control the heat and mass transport phenomena. In general, the influence of amplitude (δ) is more compared to the waviness number (m) of the undulations. The magnitude of heat (Nu) and mass (Sh) transfer rate for the W-shaped cavity is high compared to conventional square and trapezoidal-shaped cavities. The output of the analysis could be very helpful for the designer for modeling devices operating on nanotechnology-based bioconvection, microbial fuel cells, and others. KW - DOAJ Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40041 SN - 2045-2322 VL - 12 PB - Springer Nature ER - TY - CHAP A1 - Rakow, Thomas C. A1 - Faeskorn-Woyke, Heide A1 - Saatz, Inga Marina A1 - Knolle, Harm ED - Reuss, Pascal ED - Eisenstadt, Viktor ED - Schönborn, Jakob ED - Schäfer, Jero T1 - OER Tools and Courses for Teaching Database Systems as Developed in the Project EILD.nrw T2 - LWDA’22: Lernen, Wissen, Daten, Analysen. October 05–07, 2022, Hildesheim, Germany N2 - In the EILD.nrw project, Open Educational Resources (OER) are being developed for teaching databases. Instructors can use the tools and courses in a variety of learning scenarios. Students of computer science and application subjects learn the complete life cycle of databases. For this purpose, quizzes, interactive tools, instructional videos, and courses for learning management systems are developed and published under a Creative Commons license. KW - Database systems KW - OER KW - higher education Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40622 UR - https://ceur-ws.org/Vol-3341/DB-LWDA_2022_CRC_1804.pdf SN - 1613-0073 VL - CEUR Workshop Proceedings: 3341 CY - Aachen ER - TY - CHAP A1 - Rakow, Thomas C. A1 - Korezki, Vitali A1 - Bender, Axel T1 - Comparing the Contrast for Electronic and Traditional Whiteboards in a Real-life Environment T2 - Proceedings Electronic Displays Conference 2012, Nuremberg, Germany KW - Whiteboards KW - FHD Y1 - 2012 N1 - USB-Stick PB - Design & Elektronik [i.e. WEKA-Fachmedien] CY - Haar ER - TY - CHAP A1 - Rakow, Thomas C. A1 - Kless, André A1 - Hasler, Charlotte A1 - Knolle, Harm A1 - Faeskorn-Woyke, Heide A1 - Saatz, Inga Marina A1 - Lambert, Jens A1 - Focken, Mareike ED - König-Ries, Birgitta ED - Scherzinger, Stefanie ED - Lehner, Wolfgang ED - Vossen, Gottfried T1 - Developing OERs for Teaching Database Systems: A Two-Year Effort of Four Universities of Applied Sciences T2 - GI Edition Proceedings Band 331 "BTW 2023" : 6. - 10. März 2023 in Dreden KW - database systems KW - open educational resources KW - OER KW - higher education Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40611 SN - 9783885797258 PB - Köllen CY - Bonn ER - TY - JOUR A1 - Mandal, Dipak Kumar A1 - Biswas, Nirmalendu A1 - Manna, Nirmal K A1 - Benim, Ali Cemal T1 - Impact of chimney divergence and sloped absorber on energy efficacy of a solar chimney power plant (SCPP) JF - Ain Shams Engineering Journal N2 - A numerical study is carried out meticulously to scrutinize the impact of different shapes of chimneys like circular (outer dia, dc), convergent (outer dia, 0.5dc), divergent (outer dia, 1.5dc), sudden contraction (outer dia, 0.5dc), and sudden expansion (outer dia, 1.5dc) on the performance of an SCPP. Furthermore, the parametric impact with different chimney divergence angles (CDA, ϕ), and ground absorber slope angle (GSA, γ) on the SCPP performance is also scrutinized. Optimum divergence angle (ϕ=+0.75◦) enhances the power generation up to ~ 47% (76 kW) with a horizontal ground absorber surface. An increase or decrease in CDA lessens the power generation. With a sloped ground absorber angle γ=0.6◦, the gain in power generation is 60% (82 kW). The study of combination of ground sloped absorber (γ=0.6◦) and divergent chimney (ϕ=+0.75◦) shows enhancement of the power generation upto 80% (92 kW) more than the classical Manzaranes plant. KW - Solar chimney power plant (SCPP) KW - Chimney divergence angle KW - Sloped absorber surface KW - Power generation KW - Efficiency KW - Regression analysis KW - DEAL KW - HSD Publikationsfonds KW - DFG Publikationskosten Y1 - 2024 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-42410 SN - 2090-4495 N1 - Datenverfügbarkeitserklärung: Daten, die die Ergebnisse dieser wissenschaftlichen Publikation stützen, sind auf begründete Anfrage bei dem*der korrespondierenden Autor*in erhältlich. PB - Elsevier ER - TY - JOUR A1 - Schultz, Laura T1 - Methods of Political Influence of Weak Interests Using the Example of the Reform Process of the Bundesteilhabegesetz (Federal Participation Act) JF - Journal of Policy Practice and Research KW - Reform process KW - Participation KW - Weak interests KW - Germany KW - Power resources KW - Lobbying Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40488 SN - 2662-1517 SP - 1 EP - 14 PB - Springer Nature ER - TY - JOUR A1 - Gerhards, Claudia T1 - Of tubes and telegrams: The names of social media platforms and messenger services JF - Convergence: The International Journal of Research into New Media Technologies Y1 - 2023 U6 - https://doi.org/10.1177/13548565231174591 SN - 1748-7382 VL - 0 IS - 0 SP - 1 EP - 25 PB - Sage ER - TY - JOUR A1 - Anglada-Tort, Manuel A1 - Masters, Nikhil A1 - Steffens, Jochen A1 - North, Adrian A1 - Müllensiefen, Daniel T1 - The Behavioural Economics of Music: Systematic review and future directions JF - Quarterly Journal of Experimental Psychology N2 - Music-related decision-making encompasses a wide range of behaviours including those associated with listening choices, composition and performance, and decisions involving music education and therapy. Although research programmes in psychology and economics have contributed to an improved understanding of music-related behaviour, historically, these disciplines have been unconnected. Recently, however, researchers have begun to bridge this gap by employing tools from behavioural economics. This article contributes to the literature by providing a discussion about the benefits of using behavioural economics in music-decision research. We achieve this in two ways. First, through a systematic review, we identify the current state of the literature within four key areas of behavioural economics-heuristics and biases, social decision-making, behavioural time preferences, and dual-process theory. Second, taking findings of the literature as a starting point, we demonstrate how behavioural economics can inform future research. Based on this, we propose the Behavioural Economics of Music (BEM), an integrated research programme that aims to break new ground by stimulating interdisciplinary research in the intersection between music, psychology, and economics. Y1 - 2022 SN - 1747-0218 U6 - https://doi.org/10.1177/17470218221113761 SN - 1747-0226 VL - 76 IS - 5 PB - SAGE ER - TY - RPRT A1 - Niemann, Jörg A1 - Bruckmann, Julian A1 - Krautzer, Florian T1 - Green City Deals: A study on the global warming potential of alternative urban transportation systems N2 - The population is growing constantly in urban areas. This results in an increasing demand for mobility solutions while it is also worldwide aimed to reduce greenhouse gas emissions. This paper summarizes the results of a comparative study concerning the greenhouse gas emissions (based on carbon footprint) caused by alternative urban passenger transportation systems. The emissions for the vehicles and their infrastructure are analyszed over the entire life cycle from manufacturing up to their end of life. An existing cable car sytem in La Paz, Bolivia was analysed and evaluated in comparison to other modes of transportation such as small busses, large busses and a tram. According to the system definitions and the considered balance framework the study shows that beside the use of the systems the materials and the manufacturing as well as the infrastructure have a significant impact on the total emissions over the life cycle. To put focus on the „true and real“ impacts to the society it is preferable to consider the measurement results in total absolute emissions. KW - Carbon footprint KW - urban mobility KW - cable car KW - bus KW - tram KW - transport planning KW - city planning Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-28972 CY - Düsseldorf ER - TY - CHAP A1 - Tischbein, Franziska A1 - Fatemi, Armin A1 - Wirtz, Frank A1 - Schmoger, Christin A1 - Dorendorf, Stefan A1 - Schurtz, Annika A1 - Echternacht, David A1 - Ulbig, Andreas T1 - Development of Strategies for the Smartification of Low-Voltage Grids T2 - ETG-Fb. 170: ETG Kongress 2023 : Die Energiewende beschleunigen, 25. – 26.05.2023 in Kasse Y1 - 2023 SN - 978-3-8007-6108-1 VL - ETG-Fachberichte 170 SP - 438 EP - 444 PB - VDE CY - Berlin ER - TY - CHAP A1 - Fatemi, Armin A1 - Tischbein, Franziska A1 - Wirtz, Frank A1 - Schmoger, Christin A1 - Dorendorf, Stefan A1 - Schurtz, Annika A1 - Echternacht, David A1 - Ulbig, Andreas T1 - On the Impact of Smartification Strategies for the State Estimation of Low Voltage Grids T2 - 13th "Internationale Energiewirtschaftstagung" (IEWT2023), February 15-17, 2023, Vienna, Austria N2 - The decarbonization of for example the energy or heat sector leads to the transformation of distribution grids. The expansion of decentralized energy resources and the integration of new consumers due to sector coupling (e.g. heat pumps or electric vehicles) into low voltage grids increases the need for grid expansion and usage of flexibilities in the grid. A high observability of the current grid status is needed to perform these tasks efficiently and effectively. Therefore, there is a need to increase the observability of low voltage grids by installing measurement technologies (e.g. smart meters). Multiple different measurement technologies are available for low voltage grids which can vary in their benefit to observation quality and their installation costs. Therefore, Bayernwerk Netz GmbH and E.DIS AG in cooperation with E-Bridge Consulting GmbH and the Institute for High Voltage Equipment and Grids, Digitalization and Energy Economics (IAEW) investigated the effectiveness of different strategies for the smartification of low voltage grids. This paper presents the methodology used for the investigation and exemplary results focusing on the impact of intelligent cable distribution cabinets and smart meters on the quality of the state estimation. KW - State Estimation KW - Smart Meter KW - Grid Observability KW - Measurement Technologies Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-41282 SP - 1 EP - 15 CY - Wien ER - TY - CHAP A1 - Lehmann, Matthias A1 - Wittpahl, Christian A1 - Zakour, Hatem Ben A1 - Braun, Alexander ED - Haverkamp, Nils ED - Youngworth, Richard N. T1 - Resolution and accuracy of non-linear regression of PSF with artificial neural networks T2 - SPIE Optical Systems Design: Optical Instrument Science, Technology, and Applications, 2018, Frankfurt, Germany N2 - In a previous work we have demonstrated a novel numerical model for the point spread function (PSF) of an optical system that can efficiently model both experimental measurements and lens design simulations of the PSF. The novelty lies in the portability and the parameterization of this model, which allows for completely new ways to validate optical systems, which is especially interesting for mass production optics like in the automotive industry, but also for ophtalmology. The numerical basis for this model is a non-linear regression of the PSF with an artificial neural network (ANN). In this work we examine two important aspects of this model: the spatial resolution and the accuracy of the model. Measurement and simulation of a PSF can have a much higher resolution then the typical pixel size used in current camera sensors, especially those for the automotive industry. We discuss the influence this has on on the topology of the ANN and the final application where the modeled PSF is actually used. Another important influence on the accuracy of the trained ANN is the error metric which is used during training. The PSF is a distinctly non-linear function, which varies strongly over field and defocus, but nonetheless exhibits strong symmetries and spatial relations. Therefore we examine different distance and similarity measures and discuss its influence on the modeling performance of the ANN. Y1 - 2018 U6 - https://doi.org/10.1117/12.2313144 N1 - Preprint bei ArXiv verfügbar. VL - Proc. SPIE, Vol. 10695 IS - 106950C SP - 52 EP - 63 PB - International Society for Optics and Photonics CY - Frankfurt ER - TY - CHAP A1 - Brettschneider, Nico A1 - Herder, Jens A1 - de Mooij, Jeroen A1 - Ryskeldiev, Bektur ED - Herder, Jens T1 - Audio vs. Visual Avatars as Guides in Virtual Environments T2 - 21th International Conference on Human and Computer, HC-2018, March 27–28, 2019, Shizuoka University, Hamamatsu, Japan. N2 - Through constant technical progress, multi-user virtual reality is transforming towards a social activity that is no longer only used by remote users, but also in large-scale location-based experiences. We evaluate the usage of realtime-tracked avatars in co-located business-oriented applications in a "guide-user-scenario" in comparison to audio only instructions. The present study examined the effect of an avatar-guide on the user-related factors of Spatial Presence, Social Presence, User Experience and Task Load in order to propose design guidelines for co-located collaborative immersive virtual environments. Therefore, an application was developed and a user study with 40 participants was conducted in order to compare both guiding techniques of a realtime-tracked avatar guide and a non-visualised guide with otherwise constant conditions. Results reveal that the avatar-guide enhanced and stimulated communicative processes while facilitating interaction possibilities and creating a higher sense of mental immersion for users. Furthermore, the avatar-guide appeared to make the storyline more engaging and exciting while helping users adapt to the medium of virtual reality. Even though no assertion could be made concerning the Task Load factor, the avatar-guide achieved a higher subjective value on User Experience. Due to the results, avatars can be considered valuable social elements in the design of future co-located collaborative virtual environments. KW - Virtual Reality KW - Co-located Collaborations KW - Networked Immersive Virtual Environments KW - Head-mounted Display KW - Avatars KW - Lehre Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-23859 UR - https://vsvr.medien.hs-duesseldorf.de/publications/hc2018-avatar/ PB - Hochschule Düsseldorf CY - Düsseldorf ER - TY - JOUR A1 - Lehmann, Matthias A1 - Wittpahl, Christian A1 - Zakour, Hatem Ben A1 - Braun, Alexander T1 - Modeling realistic optical aberrations to reuse existing drive scene recordings for autonomous driving validation JF - Journal of Electronic Imaging N2 - Training autonomous vehicles requires lots of driving sequences in all situations. Collecting and labeling these drive scenes is a very time-consuming and expensive process. Currently, it is not possible to reuse these drive scenes with different optical properties, because there exists no numerically efficient model for the transfer function of the optical system. We present a numerical model for the point spread function (PSF) of an optical system that can efficiently model both experimental measurements and lens design simulations of the PSF. The numerical basis for this model is a nonlinear regression of the PSF with an artificial neural network. The novelty lies in the portability and the parameterization of this model. We present a lens measurement series, yielding a numerical function for the PSF that depends only on the parameters defocus, field, and azimuth. By convolving existing images and videos with this PSF, we generate images as if seen through the measured lens. The methodology applies to any optical scenario, but we focus on the context of autonomous driving, where the quality of the detection algorithms depends directly on the optical quality of the used camera system. With this model, it is possible to reuse existing recordings, with the potential to avoid millions of test drive miles. The parameterization of the optical model allows for a method to validate the functional and safety limits of camera-based advanced driver assistance systems based on the real, measured lens actually used in the product. Y1 - 2019 U6 - https://doi.org/10.1117/1.JEI.28.1.013005 SN - 1560-229X VL - 28 IS - 1 SP - 013005 PB - SPIE ER - TY - JOUR A1 - Lehmann, Matthias A1 - Wittpahl, Christian A1 - Zakour, Hatem Ben A1 - Braun, Alexander T1 - Resolution and accuracy of nonlinear regression of point spread function with artificial neural networks JF - Optical Engineering N2 - We had already demonstrated a numerical model for the point spread function (PSF) of an optical system that can efficiently model both the experimental measurements and the lens design simulations of the PSF. The novelty lies in the portability and the parameterization of this model, which allow for completely new ways to validate optical systems, which is especially interesting not only for mass production optics such as in the automotive industry but also for ophthalmology. The numerical basis for this model is a nonlinear regression of the PSF with an artificial neural network (ANN). After briefly describing both the principle and the applications of the model, we then discuss two optically important aspects: the spatial resolution and the accuracy of the model. Using mean squared error (MSE) as a metric, we vary the topology of the neural network, both in the number of neurons and in the number of hidden layers. Measurement and simulation of a PSF can have a much higher spatial resolution than the typical pixel size used in current camera sensors. We discuss the influence this has on the topology of the ANN. The relative accuracy of the averaged pixel MSE is below 10  −  4, thus giving confidence that the regression does indeed model the measurement data with good accuracy. This article is only the starting point, and we propose several research avenues for future work. Y1 - 2019 U6 - https://doi.org/10.1117/1.oe.58.4.045101 SN - 0091-3286 VL - 58 IS - 4 SP - 045101 PB - SPIE ER - TY - CHAP A1 - Ballester Ripoll, Marina A1 - Herder, Jens A1 - Ladwig, Philipp A1 - Vermeegen, Kai ED - Pfeiffer, Thies ED - Fröhlich, Julia ED - Kruse, Rolf T1 - Comparison of two Gesture Recognition Sensors for Virtual TV Studios T2 - GI-VRAR, Workshop Proceedings / Tagungsband: Virtuelle und Erweiterte Realität – 13. Workshop der GI-Fachgruppe VR/AR, N2 - In order to improve the interactivity between users and computers, recent technologies focus on incorporating gesture recognition into interactive systems. The aim of this article is to evaluate the effectiveness of using a Myo control armband and the Kinect 2 for recognition of gestures in order to interact with virtual objects in a weather report scenario. The Myo armband has an inertial measurement unit and is able to read electrical activity produced by skeletal muscles, which can be recognized as gestures, which are trained by machine learning. A Kinect sensor was used to build up a dataset which contains motion recordings of 8 different gestures and was also build up by a gesture training machine learning algorithm. Both input methods, the Kinect 2 and the Myo armband, were evaluated with the same interaction patterns in a user study, which allows a direct comparison and reveals benefits and limits of each technique. KW - Gesture recognition KW - Interaction KW - Kinect KW - Myo KW - Virtual (TV) Studio KW - Lehre Y1 - 2016 UR - http://vsvr.medien.hs-duesseldorf.de/publications/gi-vrar2016-gesture-abstract.html SN - 978-3-8440-4718-9 PB - Shaker Verlag CY - Herzogenrath ER - TY - CHAP A1 - Herder, Jens A1 - Brettschneider, Nico A1 - de Mooij, Jeroen A1 - Ryskeldiev, Bektur T1 - Avatars for Co-located Collaborations in HMD-based Virtual Environments T2 - IEEE VR 2019, 26th IEEE Conference on Virtual Reality and 3D User Interfaces, Osaka, March, 2019 N2 - Multi-user virtual reality is transforming towards a social activity that is no longer only used by remote users, but also in large-scale location-based experiences. Usage of realtime-tracked avatars in co-located business-oriented applications with a ”guide-user-scenario” is examined for user-related factors of Spatial Presence, Social Presence, User Experience and Task Load. A user study was conducted in order to compare both techniques of a realtime-tracked avatar and a non-visualised guide. Results reveal that the avatar-guide enhanced and stimulated communicative processes while facilitating interaction possibilities and creating a higher sense of mental immersion for users and engagement. KW - Virtual Reality KW - Co-located Collaborations KW - Head-mounted Display KW - Avatars KW - Social Presence KW - Lehre Y1 - 2019 UR - https://vsvr.medien.hs-duesseldorf.de/publications/ieeevr2019/ U6 - https://doi.org/10.1109/VR.2019.8798132 SP - 968 EP - 969 PB - IEEE CY - Osaka ER - TY - CHAP A1 - Herder, Jens A1 - Ladwig, Philipp A1 - Vermeegen, Kai A1 - Hergert, Dennis A1 - Busch, Florian A1 - Klever, Kevin A1 - Holthausen, Sebastian A1 - Ryskeldiev, Bektur T1 - Mixed Reality Experience - How to Use a Virtual (TV) Studio for Demonstration of Virtual Reality Applications T2 - GRAPP 2018 - 13th International Conference on Computer Graphics Theory and Applications N2 - The article discusses the question of “How to convey the experience in a virtual environment to third parties?” and explains the different technical implementations which can be used for live streaming and recording of a mixed reality experience. The real-world applications of our approach include education, entertainment, e- sports, tutorials, and cinematic trailers, which can benefit from our research by finding a suitable solution for their needs. We explain and outline our Mixed Reality systems as well as discuss the experience of recorded demonstrations of different VR applications, including the need for calibrated camera lens parameters based on realtime encoder values. KW - Virtual Reality KW - Mixed Reality KW - Augmented Virtuality KW - Virtual (TV) Studio KW - Camera Tracking KW - Lehre Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-15823 UR - http://vsvr.medien.hs-duesseldorf.de/publications/grapp2018-mr-openvr-abstract.html SN - 978-989-758-287-5 N1 - Zweitveröffentlichung - Originalpublikation liegt auf: http://www.scitepress.org/DigitalLibrary SP - 281 EP - 287 PB - INSTICC CY - Setubal - Portugal ER - TY - RPRT A1 - Christianson, Kiel A1 - Herder, Jens T1 - Mini-lectures in Computer Science on the WWW N2 - The task of the Center for Language Research is to provide content-based English language instruction for students of computer science and engineering. As such, we find ourselves at the confluence of many of the streams currently running through the English Language Teaching profession, including English for Science and Technology (EST), English for Academic Purposes (EAP), English for Specific Purposes (ESP), Computer-assisted language learning (CALL), content-based instruction, and multimedia applications in foreign language pedagogy. This paper describes our initial attempts to construct a number of World Wide Web pages where students will be able to study EST, EAP, and computer science topics on their own in a multimedia environment. KW - English as a foreign language KW - teaching KW - web and video supported learning KW - Lehre Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-854 CY - Aizu ER - TY - CHAP A1 - Geiger, Christian A1 - Herder, Jens A1 - Göbel, Sebastian A1 - Heinze, Christin A1 - Marinos, Dionysios T1 - Design and Virtual Studio Presentation of a Traditional Archery Simulator T2 - Proceedings of the Entertainment Interfaces Track 2010 at Interaktive Kulturen, Duisburg, Germany, September 12-15, 2010 N2 - In this paper we describe the design of a virtual reality simulator for traditional intuitive archery. Traditional archers aim without a target figure. Good shooting results require an excellent body-eye coordination that allows the user to perform identical movements when drawing the bow. Our simulator provides a virtual archery experience and supports the user to learn and practice the motion sequence of traditional archery in a virtual environment. We use an infrared tracking system to capture the user’s movements in order to correct his movement. To provide a realistic haptic feedback a real bow is used as interaction device. Our system provides a believable user experience and supports the user to learn how to shoot in the traditional way. Following a user-centered iterative design approach we developed a number of prototypes and evaluated them for refinement in sequent iteration cycles. For illustration purposes we created a short video clip in our virtual studio about this project that presents the main ideas in an informative yet entertaining way. KW - vr archery KW - 3D interaction KW - interactive sport simulation KW - user experience KW - user-centered design KW - Lehre KW - VSVR KW - Virtual Reality Y1 - 2010 UR - https://dl.gi.de/handle/20.500.12116/7385;jsessionid=149F7CDB1184309727393899BD806939 UR - http://ceur-ws.org/Vol-634/Entertainment-Interfaces-Proceedings03.pdf SP - 37 EP - 44 CY - Duisburg ER -