@article{MandalBiswasMannaetal.2202, author = {Mandal, Dipak Kumar and Biswas, Nirmalendu and Manna, Nirmal K and Benim, Ali Cemal}, title = {Impact of chimney divergence and sloped absorber on energy efficacy of a solar chimney power plant (SCPP)}, series = {Ain Shams Engineering Journal}, journal = {Ain Shams Engineering Journal}, publisher = {Elsevier}, issn = {2090-4495}, doi = {10.1016/j.asej.2023.102390}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-42410}, year = {2202}, abstract = {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.}, language = {en} } @article{MolloyMuellerDeeganetal.2024, author = {Molloy, Dara and M{\"u}ller, Patrick and Deegan, Brian and Mullins, Darragh and Horgan, Jonathan and Ward, Enda and Jones, Edward and Braun, Alexander and Glavin, Martin}, title = {Analysis of the Impact of Lens Blur on Safety-Critical Automotive Object Detection}, series = {IEEE Access}, volume = {12}, journal = {IEEE Access}, publisher = {IEEE}, issn = {2169-3536}, doi = {10.1109/ACCESS.2023.3348663}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-42999}, pages = {3554 -- 3569}, year = {2024}, abstract = {Camera-based object detection is widely used in safety-critical applications such as advanced driver assistance systems (ADAS) and autonomous vehicle research. Road infrastructure has been designed for human vision, so computer vision, with RGB cameras, is a vital source of semantic information from the environment. Sensors, such as LIDAR and RADAR, are also often utilized for these applications; however, cameras provide a higher spatial resolution and color information. The spatial frequency response (SFR), or sharpness of a camera, utilized in object detection systems must be sufficient to allow a detection algorithm to localize objects in the environment over its lifetime reliably. This study explores the relationship between object detection performance and SFR. Six state-of-the-art object detection models are evaluated with varying levels of lens defocus. A novel raw image dataset is created and utilized, containing pedestrians and cars over a range of distances up to 100-m from the sensor. Object detection performance for each defocused dataset is analyzed over a range of distances to determine the minimum SFR necessary in each case. Results show that the relationship between object detection performance and lens blur is much more complex than previous studies have found due to lens field curvature, chromatic aberration, and astigmatisms. We have found that smaller objects are disproportionately impacted by lens blur, and different object detection models have differing levels of robustness to lens blur}, language = {en} } @article{GeerkensSieberichsBraunetal.2024, author = {Geerkens, Simon and Sieberichs, Christian and Braun, Alexander and Waschulzik, Thomas}, title = {QI²: an interactive tool for data quality assurance}, series = {AI and Ethics}, journal = {AI and Ethics}, publisher = {Springer Nature}, issn = {2730-5961}, doi = {10.1007/s43681-023-00390-6}, year = {2024}, abstract = {The importance of high data quality is increasing with the growing impact and distribution of ML systems and big data. Also, the planned AI Act from the European commission defines challenging legal requirements for data quality especially for the market introduction of safety relevant ML systems. In this paper, we introduce a novel approach that supports the data quality assurance process of multiple data quality aspects. This approach enables the verification of quantitative data quality requirements. The concept and benefits are introduced and explained on small example data sets. How the method is applied is demonstrated on the well-known MNIST data set based an handwritten digits.}, language = {en} } @article{SieberichsGeerkensBraunetal.2024, author = {Sieberichs, Christian and Geerkens, Simon and Braun, Alexander and Waschulzik, Thomas}, title = {ECS: an interactive tool for data quality assurance}, series = {AI and Ethics}, journal = {AI and Ethics}, publisher = {Springer Nature}, issn = {2730-5961}, doi = {10.1007/s43681-023-00393-3}, year = {2024}, abstract = {With the increasing capabilities of machine learning systems and their potential use in safety-critical systems, ensuring high-quality data is becoming increasingly important. In this paper, we present a novel approach for the assurance of data quality. For this purpose, the mathematical basics are first discussed and the approach is presented using multiple examples. This results in the detection of data points with potentially harmful properties for the use in safety-critical systems.}, language = {en} } @article{PriesmannMuenchTillmannsetal.2024, author = {Priesmann, Jan and M{\"u}nch, Jonas and Tillmanns, Marius and Ridha, E. and Spiegel, T. and Reich, Marius and Adam, Mario and Nolting, L. and Praktiknjo, Aaron}, title = {Artificial intelligence and design of experiments for resource adequacy assessment in power systems}, series = {Energy Strategy Reviews}, volume = {53}, journal = {Energy Strategy Reviews}, publisher = {Elsevier}, issn = {2211-467X}, doi = {10.1016/j.esr.2024.101368}, year = {2024}, language = {en} } @inproceedings{OsterheiderKlapperichSteinetal.2023, author = {Osterheider, Angela and Klapperich, Holger and Stein, Elisabeth and Weiler, Tim and Endter, Cordula and Huldtgren, Alina and M{\"u}ller, Claudia}, title = {Conceptualization of the Understanding of Participation and Co-Creation in Interdisciplinary Research Groups developing Digital Health Technology: An Exploratory Study}, editor = {Stolze, Markus and Loch, Frieder and Baldauf, Matthias and Alt, Florian and Schneegrass, Christina and Kosch, Thomas and Hirzle, Teresa and Sadeghian, Shadan and Draxler, Fiona and Bektas, Kenan and Lohan, Katrin and Knierim, Pascal}, publisher = {Association for Computing Machinery}, address = {New York}, isbn = {979-8-4007-0771-1}, doi = {10.1145/3603555.3608572}, pages = {534 -- 538}, year = {2023}, abstract = {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.}, language = {en} } @inproceedings{MarziKlapperichHuldtgren2023, author = {Marzi, Karoline and Klapperich, Holger and Huldtgren, Alina}, title = {Insights on Older Adults' Willingness, Motives and Experiences regarding Participation in HCI research}, series = {MuC '23: Proceedings of Mensch und Computer 2023, Rapperswil Switzerland, September 3 - 6, 2023}, booktitle = {MuC '23: Proceedings of Mensch und Computer 2023, Rapperswil Switzerland, September 3 - 6, 2023}, editor = {Stolze, Markus and Loch, Frieder and Baldauf, Matthias and Alt, Florian and Schneegrass, Christina and Kosch, Thomas and Hirzle, Teresa and Sadeghian, Shadan and Draxler, Fiona and Bektas, Kenan and Lohan, Katrin and Knierim, Pascal}, publisher = {Association for Computing Machinery}, address = {New York}, isbn = {979-8-4007-0771-1}, doi = {10.1145/3603555.3608540}, pages = {432 -- 436}, year = {2023}, abstract = {User-centered and Participatory Design approaches have become widespread within HCI, also when designing digital media for older adults. These methodologies are seen as crucial to adapt technology design to older people's needs and increase their acceptance of digital technology. Nevertheless, it is often difficult to reach a diverse group of older people, for instance, people with limited technology skills, limited mobility, or cognitive issues. In addition, gerontologists criticized lately how older people's participation unfolds in technology design projects, e.g. that people are pushed into the role of users. Little is known about the motivations and needs of older adults regarding their participation in HCI research. To close this gap, we conducted an online survey (N=46) and semi-structured interviews (N=8) focusing on motivations, willingness and experiences regarding participation. Results show that people are generally willing to participate due to interest in the topic, learning new things and social bonding. However, despite the conceptions within HCI that long-term engagement is crucial within participatory design, older people in the study preferred less commitment and more open formats.}, language = {en} } @inproceedings{WohlmacherKlapperichMertleetal.2023, author = {Wohlmacher, Bernhard and Klapperich, Holger and Mertle, Fabian and Huldtgren, Alina}, title = {Overcoming technology and communication barriers in intergenerational communication with a tangible interface}, series = {MuC '23: Mensch und Computer 2023, Rapperswil Switzerland, September 3 - 6, 2023}, booktitle = {MuC '23: Mensch und Computer 2023, Rapperswil Switzerland, September 3 - 6, 2023}, editor = {Stolze, Markus and Loch, Frieder and Baldauf, Matthias and Alt, Florian and Schneegrass, Christina and Kosch, Thomas and Hirzle, Teresa and Sadeghian, Shadan and Draxler, Fiona and Bektas, Kenan and Lohan, Katrin and Knierim, Pascal}, publisher = {Association for Computing Machinery}, address = {New York}, isbn = {979-8-4007-0771-1}, doi = {10.1145/3603555.3608554}, pages = {508 -- 512}, year = {2023}, abstract = {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.}, language = {en} } @inproceedings{HuldtgrenKlapperichEndter2023, author = {Huldtgren, Alina and Klapperich, Holger and Endter, Cordula}, title = {Configuring Participatory Design of ICT for Aging Well as Matters of Care}, series = {Information and Communication Technologies for Ageing Well and e-Health}, volume = {Communications in Computer and Information Science, vol 1856}, booktitle = {Information and Communication Technologies for Ageing Well and e-Health}, editor = {Maciaszek, Leszek A. and Mulvenna, Maurice D. and Ziefle, Martina}, publisher = {Springer Nature}, address = {Cham}, isbn = {978-3-031-37496-8}, doi = {10.1007/978-3-031-37496-8_9}, pages = {157 -- 176}, year = {2023}, language = {en} } @inproceedings{vonBergSchwoererPrinzetal.2023, author = {von Berg, Markus and Schw{\"o}rer, Paul and Prinz, Lukas and Steffens, Jochen}, title = {Analysis of physical and perceptual properties of room impulse responses: development of an online tool}, series = {Forum Acusticuum 2023: 10th Convention of European Acoustics Association, Turin, Italy, 11th-15th September 2023}, booktitle = {Forum Acusticuum 2023: 10th Convention of European Acoustics Association, Turin, Italy, 11th-15th September 2023}, publisher = {EAA}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-41955}, pages = {8}, year = {2023}, abstract = {Over the past decades, research in room acoustics has established several derivative measures of an impulse response, some of which are incorporated in the ISO 3382 standards. These parameters intend to represent perceptual qualities, but were developed without a consistent modeling of room acoustical perception. More recent research proposed comprehensive inventories of room acoustic perception that are purely based on evaluations by human subjects, such as the Room Acoustical Quality Index (RAQI). In this work RA-QI scores acquired for 70 room impulse responses were predicted from room acoustical parameters. Except for Reverberance, the prediction of RAQI factors performed rather poor. In most cases, the sound source had a greater impact on RAQI scores. All analyses are published in an online tool, where users can upload omnidirectional and binaural impulse responses, and instantly obtain and visualize several physical descriptors, as well as predicted RAQI scores for three different sound sources. So far, acceptable prediction accuracy is achieved for Reverberance, Strength, Irregular Decay, Clarity and Intimacy. Larger data sets of evaluated impulse responses are required to improve the model performance and enable reliable predictions of room acoustical quality. Therefore, the administration of RAQI evaluations within the website is currently being developed.}, language = {en} } @article{MabroukBenimNajietal.2023, author = {Mabrouk, Riheb and Benim, Ali Cemal and Naji, Hassane and Dhahri, Hacen}, title = {Investigation of Pulsed Flow Effects on the Phase Change Within an Open-Cell Metal Foam Using Thermal Lattice Boltzmann Method}, series = {Transport in Porous Media}, volume = {147}, journal = {Transport in Porous Media}, number = {2}, publisher = {Springer Nature}, issn = {0169-3913}, doi = {10.1007/s11242-023-01903-x}, pages = {225 -- 257}, year = {2023}, language = {en} } @article{BittremieuxLevitskyPilzetal.2023, author = {Bittremieux, Wout and Levitsky, Lev and Pilz, Matteo and Sachsenberg, Timo and Huber, Florian and Wang, Mingxun and Dorrestein, Pieter C.}, title = {Unified and Standardized Mass Spectrometry Data Processing in Python Using spectrum_utils}, series = {Journal of proteome research}, volume = {22}, journal = {Journal of proteome research}, number = {2}, publisher = {American Chemical Society (ACS)}, issn = {1535-3893}, doi = {10.1021/acs.jproteome.2c00632}, pages = {625 -- 631}, year = {2023}, language = {en} } @article{BiswasMandalMannaetal.2023, author = {Biswas, Nirmalendu and Mandal, Dipak Kumar and Manna, Nirmal K. and Benim, Ali Cemal}, title = {Enhanced energy and mass transport dynamics in a thermo-magneto-bioconvective porous system containing oxytactic bacteria and nanoparticles: cleaner energy application}, series = {Energy}, volume = {263}, journal = {Energy}, number = {B}, publisher = {Elsevier}, issn = {0360-5442}, doi = {10.1016/j.energy.2022.125775}, year = {2023}, language = {en} } @article{Schultz2023, author = {Schultz, Laura}, title = {Methods of Political Influence of Weak Interests Using the Example of the Reform Process of the Bundesteilhabegesetz (Federal Participation Act)}, series = {Journal of Policy Practice and Research}, journal = {Journal of Policy Practice and Research}, publisher = {Springer Nature}, issn = {2662-1517}, doi = {10.1007/s42972-022-00073-2}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-40488}, pages = {1 -- 14}, year = {2023}, language = {en} } @article{GroteRammLanuschnyLorenzenetal.2023, author = {Grote-Ramm, Wolfgang and Lanuschny, David and Lorenzen, Finn and Brito, Marcel Oliveira and Schoenig, Felix}, title = {Continual learning for neural regression networks to cope with concept drift in industrial processes using convex optimisation}, series = {Engineering Applications of Artificial Intelligence}, volume = {120}, journal = {Engineering Applications of Artificial Intelligence}, publisher = {Elsevier}, issn = {0952-1976}, doi = {10.1016/j.engappai.2023.105927}, year = {2023}, language = {en} } @article{HaberfehlnervandeVenvanderBurgetal.2023, author = {Haberfehlner, Helga and van de Ven, Shankara S. and van der Burg, Sven A. and Huber, Florian and Georgievska, Sonja and Aleo, Ignazio and Harlaar, Jaap and Bonouvri{\´e}, Laura A. and van der Krogt, Marjolein M. and Buizer, Annemieke I.}, title = {Towards automated video-based assessment of dystonia in dyskinetic cerebral palsy: A novel approach using markerless motion tracking and machine learning}, series = {Frontiers in Robotics and AI}, volume = {10}, journal = {Frontiers in Robotics and AI}, publisher = {Frontiers}, issn = {2296-9144}, doi = {10.3389/frobt.2023.1108114}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-40592}, year = {2023}, language = {en} } @article{FailingKaluzaStrucks2023, author = {Failing, Luisa and Kaluza, Stefan and Strucks, Peter}, title = {Catalytic CO2 methanation: Providing optimal test conditions for kinetic investigations}, series = {Chemie Ingenieur Technik}, volume = {95}, journal = {Chemie Ingenieur Technik}, number = {5}, publisher = {Wiley}, issn = {1522-2640}, doi = {10.1002/cite.202200201}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-40026}, pages = {749 -- 753}, year = {2023}, abstract = {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}, language = {en} } @article{SteffensAngladaTort2023, author = {Steffens, Jochen and Anglada-Tort, Manuel}, title = {The effect of visual recognition on listener choices when searching for music in playlists}, series = {Psychology of Aesthetics, Creativity, and the Arts}, journal = {Psychology of Aesthetics, Creativity, and the Arts}, publisher = {American Psychological Association}, issn = {1931-3896}, doi = {10.1037/aca0000562}, year = {2023}, language = {en} } @misc{VersuemerSteffensRosenthal2023, author = {Vers{\"u}mer, Siegbert and Steffens, Jochen and Rosenthal, Fabian}, title = {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}, edition = {V.01.1}, address = {Zenodo}, doi = {10.5281/zenodo.7193937}, year = {2023}, abstract = {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.}, subject = {soundscape}, language = {en} } @masterthesis{Obry2023, type = {Bachelor Thesis}, author = {Obry, Yannick}, title = {Music Streaming Adaption - Drivers of Behavioral Intention}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-41326}, school = {Hochschule D{\"u}sseldorf}, pages = {31}, year = {2023}, abstract = {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.}, language = {en} } @misc{DeckertPhanNgoc2023, author = {Deckert, Carsten and Phan Ngoc, Duc Anh}, title = {PlayStation 4 vs. Xbox One: Competitive Analysis of the Video Game Industry}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, doi = {10.20385/opus4-4114}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-41142}, pages = {22}, year = {2023}, language = {en} } @misc{Deckert2023, author = {Deckert, Carsten}, title = {Now What You Hear Is Not a Test: The Invention and Commercialization of Rap Music}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, doi = {10.20385/opus4-4113}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-41134}, pages = {14}, year = {2023}, language = {en} } @article{Gerhards2023, author = {Gerhards, Claudia}, title = {Of tubes and telegrams: The names of social media platforms and messenger services}, series = {Convergence: The International Journal of Research into New Media Technologies}, volume = {0}, journal = {Convergence: The International Journal of Research into New Media Technologies}, number = {0}, publisher = {Sage}, issn = {1748-7382}, doi = {10.1177/13548565231174591}, pages = {1 -- 25}, year = {2023}, language = {en} } @inproceedings{TischbeinFatemiWirtzetal.2023, author = {Tischbein, Franziska and Fatemi, Armin and Wirtz, Frank and Schmoger, Christin and Dorendorf, Stefan and Schurtz, Annika and Echternacht, David and Ulbig, Andreas}, title = {Development of Strategies for the Smartification of Low-Voltage Grids}, series = {ETG-Fb. 170: ETG Kongress 2023 : Die Energiewende beschleunigen, 25. - 26.05.2023 in Kasse}, volume = {ETG-Fachberichte 170}, booktitle = {ETG-Fb. 170: ETG Kongress 2023 : Die Energiewende beschleunigen, 25. - 26.05.2023 in Kasse}, publisher = {VDE}, address = {Berlin}, isbn = {978-3-8007-6108-1}, pages = {438 -- 444}, year = {2023}, language = {en} } @inproceedings{FatemiTischbeinWirtzetal.2023, author = {Fatemi, Armin and Tischbein, Franziska and Wirtz, Frank and Schmoger, Christin and Dorendorf, Stefan and Schurtz, Annika and Echternacht, David and Ulbig, Andreas}, title = {On the Impact of Smartification Strategies for the State Estimation of Low Voltage Grids}, series = {13th "Internationale Energiewirtschaftstagung" (IEWT2023), February 15-17, 2023, Vienna, Austria}, booktitle = {13th "Internationale Energiewirtschaftstagung" (IEWT2023), February 15-17, 2023, Vienna, Austria}, address = {Wien}, doi = {10.48550/arXiv.2303.07964}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-41282}, pages = {1 -- 15}, year = {2023}, abstract = {The decarbonization of for example the energy or heat sector leads to the transformation of distribution grids. The expansion of decentralized energy resources and the integration of new consumers due to sector coupling (e.g. heat pumps or electric vehicles) into low voltage grids increases the need for grid expansion and usage of flexibilities in the grid. A high observability of the current grid status is needed to perform these tasks efficiently and effectively. Therefore, there is a need to increase the observability of low voltage grids by installing measurement technologies (e.g. smart meters). Multiple different measurement technologies are available for low voltage grids which can vary in their benefit to observation quality and their installation costs. Therefore, Bayernwerk Netz GmbH and E.DIS AG in cooperation with E-Bridge Consulting GmbH and the Institute for High Voltage Equipment and Grids, Digitalization and Energy Economics (IAEW) investigated the effectiveness of different strategies for the smartification of low voltage grids. This paper presents the methodology used for the investigation and exemplary results focusing on the impact of intelligent cable distribution cabinets and smart meters on the quality of the state estimation.}, language = {en} } @article{WolfUlrichBraun2023, author = {Wolf, Dominik Werner and Ulrich, Markus and Braun, Alexander}, title = {Novel developments of refractive power measurement techniques in the automotive world}, series = {Metrologia}, journal = {Metrologia}, number = {ACCEPTED MANUSCRIPT}, publisher = {IOP Publishing}, issn = {1681-7575}, doi = {10.1088/1681-7575/acf1a4}, year = {2023}, abstract = {Refractive power measurements serve as the primary quality standard in the automotive glazing industry. In the light of autonomous driving new optical metrics are becoming more and more popular for specifying optical quality requirements for the windshield. Nevertheless, the link between those quantities and the refractive power needs to be established in order to ensure a holistic requirement profile for the windshield. As a consequence, traceable high-resolution refractive power measurements are still required for the glass quality assessment. Standard measurement systems using Moir{\´e} patterns for refractive power monitoring in the automotive industry are highly resolution limited, wherefore they are insufficient for evaluating the camera window area. Consequently, there is a need for more sophisticated refractive power measurement systems that provide a higher spatial resolution. In addition, a calibration procedure has to be developed in order to guarantee for comparability of the measurement results. For increasing the resolution, a measurement setup based on an auto-correlation algorithm is tested in this paper. Furthermore, a calibration procedure is established by using a single reference lens with a nominal refractive power of 100 km-1. For the calibration of the entire measurement range of the system, the lens is tilted by an inclination angle orthogonal to the optical axis. The effective refractive power is then given by the Kerkhof model. By adopting the measurement and calibration procedure presented in this paper, glass suppliers in the automotive industry will be able to detect relevant manufacturing defects within the camera window area more accurately paving the way for a holistic quality assurance of the windshield for future advanced driver-assistance system (ADAS) functionalities. Concurrently, the traceability of the measurement results is ensured by establishing a calibration chain based on a single reference lens, which is traced back to international standards.}, language = {en} } @article{MuellerBraun2023, author = {M{\"u}ller, Patrick and Braun, Alexander}, title = {MTF as a performance indicator for AI algorithms?}, series = {Electronic Imaging: Society for Imaging Science and Technology}, volume = {35}, journal = {Electronic Imaging: Society for Imaging Science and Technology}, number = {16}, publisher = {Society for Imaging Sciences and Technology}, issn = {2470-1173}, doi = {10.2352/EI.2023.35.16.AVM-125}, pages = {1 -- 7}, year = {2023}, abstract = {Abstract The modulation-transfer function (MTF) is a fundamental optical metric to measure the optical quality of an imaging system. In the automotive industry it is used to qualify camera systems for ADAS/AD. Each modern ADAS/AD system includes evaluation algorithms for environment perception and decision making that are based on AI/ML methods and neural networks. The performance of these AI algorithms is measured by established metrics like Average Precision (AP) or precision-recall-curves. In this article we research the robustness of the link between the optical quality metric and the AI performance metric. A series of numerical experiments were performed with object detection and instance segmentation algorithms (cars, pedestrians) evaluated on image databases with varying optical quality. We demonstrate with these that for strong optical aberrations a distinct performance loss is apparent, but that for subtle optical quality differences - as might arise during production tolerances - this link does not exhibit a satisfactory correlation. This calls into question how reliable the current industry practice is where a produced camera is tested end-of-line (EOL) with the MTF, and fixed MTF thresholds are used to qualify the performance of the camera-under-test.}, language = {en} } @article{MuellerBraun2023, author = {M{\"u}ller, Patrick and Braun, Alexander}, title = {Local performance evaluation of AI-algorithms with the generalized spatial recall index}, series = {tm - Technisches Messen}, volume = {90}, journal = {tm - Technisches Messen}, number = {7-8}, publisher = {de Gruyter}, issn = {2196-7113}, doi = {10.1515/teme-2023-0013}, pages = {464 -- 477}, year = {2023}, language = {en} } @inproceedings{StoehrZielke2023, author = {St{\"o}hr, Marcel and Zielke, Thomas}, title = {Machine Learning for Soft Sensors and an Application in Cement Production}, series = {Smart, Sustainable Manufacturing in an Ever-Changing World Proceedings of International Conference on Competitive Manufacturing (COMA '22)}, volume = {Lecture Notes in Production Engineering}, booktitle = {Smart, Sustainable Manufacturing in an Ever-Changing World Proceedings of International Conference on Competitive Manufacturing (COMA '22)}, editor = {Leipzig, Konrad von and Sacks, Natasha and Mc Clelland, Michelle}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-15604-5}, doi = {10.1007/978-3-031-15602-1_46}, pages = {627 -- 638}, year = {2023}, language = {en} } @unpublished{GeerkensSieberichsBraunetal.2023, author = {Geerkens, Simon and Sieberichs, Christian and Braun, Alexander and Waschulzik, Thomas}, title = {QI2 -- an Interactive Tool for Data Quality Assurance}, address = {arXiv}, year = {2023}, abstract = {The importance of high data quality is increasing with the growing impact and distribution of ML systems and big data. Also the planned AI Act from the European commission defines challenging legal requirements for data quality especially for the market introduction of safety relevant ML systems. In this paper we introduce a novel approach that supports the data quality assurance process of multiple data quality aspects. This approach enables the verification of quantitative data quality requirements. The concept and benefits are introduced and explained on small example data sets. How the method is applied is demonstrated on the well known MNIST data set based an handwritten digits.}, language = {en} } @unpublished{SieberichsGeerkensBraunetal.2023, author = {Sieberichs, Christian and Geerkens, Simon and Braun, Alexander and Waschulzik, Thomas}, title = {ECS -- an Interactive Tool for Data Quality Assurance}, publisher = {arXiv}, doi = {10.48550/arXiv.2307.04368}, year = {2023}, abstract = {With the increasing capabilities of machine learning systems and their potential use in safety-critical systems, ensuring high-quality data is becoming increasingly important. In this paper we present a novel approach for the assurance of data quality. For this purpose, the mathematical basics are first discussed and the approach is presented using multiple examples. This results in the detection of data points with potentially harmful properties for the use in safety-critical systems.}, language = {en} } @inproceedings{LorenzenSchoenigGroteRammetal.2023, author = {Lorenzen, Finn and Sch{\"o}nig, Felix and Grote-Ramm, Wolfgang and Oliveira Brito, Marcel and Neuberger, Heiko and Sobolyev, Alexander}, title = {Continual Adaptation of Compressor Maps During Operation on Measurement Data For Increased Performance of Model-Based Applications in Turbomachinery}, series = {ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, June 26-30, 2023 Boston, Massachusetts, USA}, volume = {Volume 4}, booktitle = {ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, June 26-30, 2023 Boston, Massachusetts, USA}, publisher = {ASME}, address = {Boston}, isbn = {978-0-7918-8697-7}, doi = {10.1115/GT2023-103458}, pages = {1 -- 7}, year = {2023}, abstract = {Higher control engineering concepts, including artificial intelligence and model-based control, are recently becoming more popular in complex industrial applications because they enable a significant increase in efficiency. E.g., a model-based approach can be used to enhance the control and monitoring of several coupled components of a larger turbomachinery train. This requires dynamic models of the components, including all machine characteristics, which may experience a shift in their behavior over the course of their lifetime. Such changes occur due to natural fouling, wear of sub-components or external effects induced by maintenance measures. To overcome this problem, we model machine-characteristic maps with artificial neural networks, which may be used as part of prediction models in a model predictive control unit. If an appropriate data set is available, this allows us to adapt the model to the current behavior of the machine without requiring in-depth knowledge about the underlying physics of this "concept drift", as it is known in literature. However, the training of neural networks is usually connected with high computational effort while the task needs to be executed in real-time during operation. Furthermore, in real operating conditions, machine sensors can only provide labeled data from the current operating point of the machine, which can be stationary for long operation periods of up to several months. In general, this yields only an unrepresentative data subset of the machine-characteristics, which is not sufficient to retrain the whole model to a new state. To solve these problems, we firstly reduce the model adaptation to a convex optimization problem, which can be efficiently solved in real-time conditions. Secondly, we use a specialized data management system with which we can integrate historical data to supplement the unrepresentative data subset. In this paper we show the application of the outlined method on a compressor map and discuss the advantages and requirements of the method in the context of modeling applications for industrial turbomachinery.}, language = {en} } @article{GroteRammLanuschnyLorenzenetal.2023, author = {Grote-Ramm, Wolfgang and Lanuschny, David and Lorenzen, Finn and Oliveira Brito, Marcel and Sch{\"o}nig, Felix}, title = {Continual learning for neural regression networks to cope with concept drift in industrial processes using convex optimisation}, series = {Engineering Applications of Artificial Intelligence}, volume = {120}, journal = {Engineering Applications of Artificial Intelligence}, publisher = {Elsevier}, address = {New York}, issn = {1873-6769}, doi = {10.1016/j.engappai.2023.105927}, pages = {10}, year = {2023}, abstract = {Process models in industrial applications, e.g. predictive maintenance or automation, are subject to both divergence from the underlying system due to their time-variant nature and to high complexity resulting from a wide operational range being covered. Hence, regression models require high accuracy for the present system state and at the same time need to be valid across the whole system operating space. While accuracy for the current system state can be gained by updating the model on the current data, the overall validity must often be retrieved from historical or design data. We propose a method to find an appropriate compromise for these two demands. A pre-trained artificial neural network (ANN) is continually updated on the current sensor data stream using convex optimisation. Thus, a unique and optimal solution is generated in each update step, while robust regression accuracy on the domain that is not covered by the arriving data subset is maintained. This is achieved by introducing a data management system to provide some historical data, constraining the optimisation problem and manipulating the architecture of the ANN. Models updated with this method show reasonable stability but display plastic behaviour at the current operating point.}, language = {en} } @inproceedings{GroteRammSchoenigSchwarzboezletal.2023, author = {Grote-Ramm, Wolfgang and Sch{\"o}nig, Felix and Schwarzb{\"o}zl, Peter and Drexelius, Maximilian and Maldonado Quinto, Daniel and Binder, Matthias}, title = {Model Predictive Control and Service Life Monitoring for Molten Salt Solar Power Towers}, series = {29th SolarPACES Conference, Sydney}, booktitle = {29th SolarPACES Conference, Sydney}, year = {2023}, abstract = {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 J{\"u}lich, 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.}, language = {en} } @inproceedings{RakowKlessHasleretal.2023, author = {Rakow, Thomas C. and Kless, Andr{\´e} and Hasler, Charlotte and Knolle, Harm and Faeskorn-Woyke, Heide and Saatz, Inga Marina and Lambert, Jens and Focken, Mareike}, title = {Developing OERs for Teaching Database Systems: A Two-Year Effort of Four Universities of Applied Sciences}, series = {GI Edition Proceedings Band 331 "BTW 2023" : 6. - 10. M{\"a}rz 2023 in Dreden}, booktitle = {GI Edition Proceedings Band 331 "BTW 2023" : 6. - 10. M{\"a}rz 2023 in Dreden}, editor = {K{\"o}nig-Ries, Birgitta and Scherzinger, Stefanie and Lehner, Wolfgang and Vossen, Gottfried}, publisher = {K{\"o}llen}, address = {Bonn}, isbn = {9783885797258}, doi = {10.18420/BTW2023-31}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-40611}, year = {2023}, language = {en} } @article{HeizmannBraunGlitzneretal.2022, author = {Heizmann, Michael and Braun, Alexander and Glitzner, Markus and G{\"u}nther, Matthias and Hasna, G{\"u}nther and Kl{\"u}ver, Christina and Krooß, Jakob and Marquardt, Erik and Overdick, Michael and Ulrich, Markus}, title = {Implementing machine learning: chances and challenges}, series = {at - Automatisierungstechnik}, volume = {70}, journal = {at - Automatisierungstechnik}, number = {1}, publisher = {De Gruyter}, address = {Berlin}, issn = {2196-677X}, doi = {10.1515/auto-2021-0149}, pages = {90 -- 101}, year = {2022}, language = {en} } @misc{Neuhaus2022, type = {Master Thesis}, author = {Neuhaus, Annika}, title = {Prokrastination, Stressempfinden und -bew{\"a}ltigung: Eine quantitative Analyse einer Onlinebefragung mit Studierenden}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-38638}, school = {Hochschule D{\"u}sseldorf}, pages = {92}, year = {2022}, language = {en} } @inproceedings{SteffensHimmelein2022, author = {Steffens, Jochen and Himmelein, Hendrik}, title = {Induced cognitive load influences unpleasantness judgments of modulated noise}, series = {Proceedings of the 24th International Congress on Acoustics}, booktitle = {Proceedings of the 24th International Congress on Acoustics}, address = {Gyeoungju, S{\"u}dkorea}, year = {2022}, language = {en} } @article{Braun2022, author = {Braun, Alexander}, title = {Automotive mass production of camera systems: Linking image quality to AI performance}, series = {tm - Technisches Messen}, journal = {tm - Technisches Messen}, publisher = {Walter de Gruyter}, issn = {2196-7113}, doi = {10.1515/teme-2022-0029}, year = {2022}, abstract = {Artificial intelligence methods based on machine learning or artificial neural networks have become indispensable in camera-based driver assistance systems, and also represent an essential building block for future autonomous driving. However, the great successes of these evaluation methods in environment perception and also driving planning are accompanied by equally great challenges in the validation and verification of these systems. One of the essential aspects for this is the required guaranteed safety of the functions under mass production conditions of the vehicles. This article explains this point of view using a detailed example from the field of camera-based driver assistance systems: the determination of inspection limits at the end of the production line. The camera is one of the most important sensor modalities for vehicle environment sensing and as such, the quality of the camera systems plays a key role in the safety argumentation of the overall system. Several illustrative application examples (role of simulations, calibration, influence of the windshield) will be presented. The basic ideas presented can be well transferred to the other sensor modalities (lidar, radar, ToF, etc.). The investigations/evidence show that doubts are allowed whether or how fast autonomous driving on level L4/5 will take hold as robotaxis or - even more challenging - in private ownership on a larger scale.}, language = {en} } @inproceedings{vanAerssenLeichSchmidtetal.2022, author = {van Aerssen, Max and Leich, Christian and Schmidt, Holger and Al Ali, Salar and Benni, Abdulkader and Tanz, Jakob}, title = {CopypastaVulGuard - A browser extension to prevent copy and paste spreading of vulnerable source code in forum posts}, series = {ARES '22: Proceedings of the 17th International Conference on Availability, Reliability and Security}, booktitle = {ARES '22: Proceedings of the 17th International Conference on Availability, Reliability and Security}, publisher = {Association for Computing Machinery}, address = {New York}, doi = {10.1145/3538969.3538973}, pages = {1 -- 8}, year = {2022}, abstract = {Forums such as Stack Overflow are used by many software developers to find a solution for a given coding problem. Found solutions, i.e. forum posts containing relevant source code, are utilized in a copy and paste manner. This behavior carries the risk that vulnerabilities contained in the source code of the forum posts are spread. Software developers should be able to identify vulnerable source code at an early stage, thereby preventing copying the corresponding source code. In this paper, we introduce the tool CopypastaVulGuard that identifies vulnerable source code in forum posts and allows software developers to omit the source code by marking the forum posts as dangerous. Our tool consists of a browser extension and a management application capable to address as examples SQL injections, remote code executions and deprecated functions based on a dump of the archive.org Stack Overflow data set. We present an evaluation of our tool's possible impact and relevance considering pros/cons and selected research questions.}, language = {en} } @inproceedings{vonBergPrinzSteffens2022, author = {von Berg, Markus and Prinz, Lukas and Steffens, Jochen}, title = {Comparing individual perception of timbre and reverberance}, address = {Gyeoungju, S{\"u}dkorea}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-38706}, pages = {5}, year = {2022}, abstract = {Room reverberation alters the spatial impression and timbre of a sound by modulating its spectral and temporal characteristics. Thus, we argue that, on a perceptual level, reverberation basically breaks down into interaural differences and spectro-temporal cues and that the separation of a perceived timbre into a sound source and a surrounding room is a purely cognitive process. To investigate the connection between the perception of reverberation cues and timbre analysis, the sensitivity for changes in reverberation was compared to timbre perception abilities. The Timbre Perception Test was used to measure the perception of the temporal envelope, spectral centroid, and spectral flux of artificial sounds. Sensitivity for changes in reverberation time was tested with a discrimination task using speech and noise with speech-alike spectral and temporal envelopes as source signals. Musical and acoustical expertise was assessed through the Goldsmiths Musical Sophistication Index and self-reports on experience with and knowledge of acoustics. There was a considerable correlation between timbre and reverberance perception ability, but timbre perception and academic experience predicted only 41\% of the variance in reverberance perception. Still, perception abilities related to similar acoustical phenomena seem to be better indicators of listening skills than self-reports on acoustical or musical expertise.}, language = {en} } @inproceedings{Prusas2022, author = {Prusas, Benedik}, title = {Simulation of Germany's security of supply: long-term forecasting of electric load profiles using machine learning.}, series = {ENERDAY 2022 - 16th international conference of energy economics and technology, 30.9.2022, Dresden}, booktitle = {ENERDAY 2022 - 16th international conference of energy economics and technology, 30.9.2022, Dresden}, publisher = {Technische Universit{\"a}t Dresden}, address = {Dresden}, year = {2022}, language = {en} } @article{DeckertSchomaker2022, author = {Deckert, Carsten and Schomaker, Rahel M.}, title = {Cultural tightness-looseness and national innovativeness: impacts of tolerance and diversity of opinion}, series = {Journal of Innovation and Entrepreneurship}, volume = {11}, journal = {Journal of Innovation and Entrepreneurship}, publisher = {Springer Nature}, issn = {2192-5372}, doi = {10.1186/s13731-022-00219-2}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-36515}, pages = {1 -- 19}, year = {2022}, abstract = {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.}, subject = {Innovation}, language = {en} } @incollection{DeckertSchomakerKnappitsch2022, author = {Deckert, Carsten and Schomaker, Rahel and Knappitsch, Eithne}, title = {Cultural Impacts on National Innovativeness and Entrepreneurship}, series = {Innovation and entrepreneurship : theory and practice}, booktitle = {Innovation and entrepreneurship : theory and practice}, editor = {Poznańska, Krystyna and Szczepańska-Woszczyna, Katarzyna and Michałek, Janusz}, publisher = {WSB University}, address = {Dąbrowa G{\´o}rnicza}, isbn = {9788366794306}, pages = {57 -- 84}, year = {2022}, language = {en} } @article{SenthurAnandRameshKumaretal.2022, author = {Senthur, N.S. and Anand, C and Ramesh Kumar, M and Elumalai, P.V. and Shajahan, Mohamed Iqbal and Benim, Ali Cemal and Nasr, Emad Abouel and Hussein, H.M.A. and Parthasarathy, M.}, title = {Influence of cobalt chromium nanoparticles in homogeneous charge compression ignition engine operated with citronella oil}, series = {Energy Science \& Engineering}, volume = {10}, journal = {Energy Science \& Engineering}, number = {4}, publisher = {Wiley}, issn = {2050-0505}, doi = {10.1002/ese3.1088}, pages = {1251 -- 1263}, year = {2022}, language = {en} } @inproceedings{DeckertKalefeldKutz2022, author = {Deckert, Carsten and Kalefeld, Jannik and Kutz, Martin}, title = {Business Model Innovation for the Internet of Things}, series = {Lecture Notes in Information Systems and Organisation: Digital Twins and New Business Models}, volume = {LNISO,volume 54}, booktitle = {Lecture Notes in Information Systems and Organisation: Digital Twins and New Business Models}, editor = {Kumar, Vikas and Leng, Jiewu and Akberdina, Victoria and Kuzmin, Evgeny}, publisher = {Springer International Publishing}, address = {Cham}, isbn = {978-3-030-94617-3}, issn = {2195-4968}, doi = {10.1007/978-3-030-94617-3_23}, pages = {321 -- 333}, year = {2022}, language = {en} } @article{KampaFinkeStalderetal.2022, author = {Kampa, Miriam and Finke, Johannes and Stalder, Tobias and Bucher, Leandra and Klapperich, Holger and Mertl, Fabian and Zimmer, Christian and Geiger, Christian and Hassenzahl, Marc and Klucken, Tim}, title = {Facilitating relaxation and stress reduction in healthy participants through a virtual reality intervention: study protocol for a non-inferiority randomized controlled trial}, series = {Trials}, volume = {23}, journal = {Trials}, publisher = {BMC}, issn = {1745-6215}, doi = {10.1186/s13063-022-06307-8}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-40118}, year = {2022}, language = {en} } @article{Benim2022, author = {Benim, Ali Cemal}, title = {Introducing the "Mathematical Modelling and Numerical Simulation of Combustion and Fire" Section of the Journal Fire}, series = {fire}, volume = {5}, journal = {fire}, number = {6}, publisher = {MDPI}, issn = {2571-6255}, doi = {10.3390/fire5060178}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-40257}, year = {2022}, language = {en} } @article{BrummelMuellerBraun2022, author = {Brummel, Mattis and M{\"u}ller, Patrick and Braun, Alexander}, title = {Spatial precision and recall indices to assess the performance of instance segmentation algorithms}, series = {Electronic Imaging}, volume = {34}, journal = {Electronic Imaging}, number = {16}, publisher = {Society for Imaging Science and Technology}, issn = {2470-1173}, doi = {10.2352/EI.2022.34.16.AVM-101}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-41552}, pages = {1 -- 6}, year = {2022}, language = {en} } @article{AliFarooqShahzadetal.2022, author = {Ali, R. and Farooq, A. and Shahzad, A. and Benim, Ali Cemal and Iqbal, A. and Razzaq, M.}, title = {Computational approach on three-dimensional flow of couple-stress fluid with convective boundary conditions}, series = {Physica A: Statistical Mechanics and its Applications}, volume = {553}, journal = {Physica A: Statistical Mechanics and its Applications}, publisher = {Elsevier}, issn = {0378-4371}, doi = {10.1016/j.physa.2019.124056}, year = {2022}, language = {en} } @article{BittremieuxSchmidHuberetal.2022, author = {Bittremieux, Wout and Schmid, Robin and Huber, Florian and van der Hooft, Justin J. J. and Wang, Mingxun and Dorrestein, Pieter C.}, title = {Comparison of Cosine, Modified Cosine, and Neutral Loss Based Spectrum Alignment For Discovery of Structurally Related Molecules}, series = {Journal of the American Society for Mass Spectrometry}, volume = {33}, journal = {Journal of the American Society for Mass Spectrometry}, number = {9}, publisher = {American Chemical Society (ACS)}, issn = {1044-0305}, doi = {10.1021/jasms.2c00153}, pages = {1733 -- 1744}, year = {2022}, language = {en} } @article{SchwungYuwonoSchwungetal.2022, author = {Schwung, Dorothea and Yuwono, Steve and Schwung, Andreas and Ding, Steven X.}, title = {PLC-Informed Distributed Game Theoretic Learning of Energy-Optimal Production Policies}, series = {IEEE Transactions on Cybernetics}, journal = {IEEE Transactions on Cybernetics}, publisher = {IEEE}, issn = {2168-2267}, doi = {10.1109/TCYB.2022.3179950}, pages = {1 -- 14}, year = {2022}, language = {en} } @article{LauxGotterEckertetal.2022, author = {Laux, Christoph and Gotter, Andreas and Eckert, Frank and Neef, Matthias}, title = {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}, series = {Energy Conversion and Management}, volume = {271}, journal = {Energy Conversion and Management}, publisher = {Elsevier}, issn = {0196-8904}, doi = {10.1016/j.enconman.2022.116265}, year = {2022}, language = {en} } @article{BenimCanalBoke2022, author = {Benim, Ali Cemal and Canal, Cansu Deniz and Boke, Yakup Erhan}, title = {Computational investigation of oxy-combustion of pulverized coal and biomass in a swirl burner}, series = {Energy}, volume = {238}, journal = {Energy}, number = {C}, publisher = {Elsevier}, issn = {0360-5442}, doi = {10.1016/j.energy.2021.121852}, year = {2022}, language = {en} } @article{MabroukNajiBenimetal.2022, author = {Mabrouk, Riheb and Naji, Hassane and Benim, Ali Cemal and Dhahri, Hacen}, title = {A State of the Art Review on Sensible and Latent Heat Thermal Energy Storage Processes in Porous Media: Mesoscopic Simulation}, series = {Applied Sciences}, volume = {12}, journal = {Applied Sciences}, number = {14}, publisher = {MDPI}, doi = {10.3390/app12146995}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-40343}, year = {2022}, language = {en} } @misc{Blum2022, type = {Master Thesis}, author = {Blum, Jessica}, title = {Queering Empowerment and Accountability - Towards a Decolonial Peacebuilding-Development Praxis Nexus}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-38517}, school = {Hochschule D{\"u}sseldorf}, pages = {139}, year = {2022}, language = {en} } @article{WojciechowskiPogscheba2022, author = {Wojciechowski, Manfred and Pogscheba, Patrick}, title = {Building a COVID-Safe Navigation App Using a Meta-Model Based Context Server}, series = {sensors}, volume = {22}, journal = {sensors}, number = {24}, publisher = {MDPI}, issn = {1424-8220}, doi = {10.3390/s22249890}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-39570}, pages = {1 -- 14}, year = {2022}, abstract = {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.}, language = {en} } @article{PfeiffelmannOzmanBenimetal.2022, author = {Pfeiffelmann, Bjorn and Ozman, Cansu and Benim, Ali Cemal and Joos, Franz}, title = {Analysis of the effect of nonuniform surface temperature distribution on the performance of a thermoelectric generator}, series = {Sustainable Energy Technologies and Assessments}, volume = {53}, journal = {Sustainable Energy Technologies and Assessments}, number = {A}, publisher = {Elsevier}, issn = {2213-1388}, doi = {10.1016/j.seta.2022.102375}, year = {2022}, language = {en} } @article{AngladaTortMastersSteffensetal.2022, author = {Anglada-Tort, Manuel and Masters, Nikhil and Steffens, Jochen and North, Adrian and M{\"u}llensiefen, Daniel}, title = {The Behavioural Economics of Music: Systematic review and future directions}, series = {Quarterly Journal of Experimental Psychology}, volume = {76}, journal = {Quarterly Journal of Experimental Psychology}, number = {5}, publisher = {SAGE}, isbn = {1747-0218}, issn = {1747-0226}, doi = {10.1177/17470218221113761}, year = {2022}, abstract = {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.}, language = {en} } @article{WohlersMuellerBraun2022, author = {Wohlers, Luis Constantin and M{\"u}ller, Patrick and Braun, Alexander}, title = {Original image noise reconstruction for spatially-varying filtered driving scenes}, series = {Electronic Imaging: Society for Imaging Science and Technology}, volume = {34}, journal = {Electronic Imaging: Society for Imaging Science and Technology}, number = {16}, publisher = {Society for Imaging Sciences and Technology}, issn = {2470-1173}, doi = {10.2352/EI.2022.34.16.AVM-214}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-41479}, pages = {1 -- 7}, year = {2022}, language = {en} } @inproceedings{MuellerBraunKeuper2022, author = {M{\"u}ller, Patrick and Braun, Alexander and Keuper, Margret}, title = {Impact of realistic properties of the point spread function on classification tasks to reveal a possible distribution shift}, series = {NeurIPS 2022: Workshop on Distribution Shifts: Connecting Methods and Applications, December 3rd, 2022, New Orleans, USA}, booktitle = {NeurIPS 2022: Workshop on Distribution Shifts: Connecting Methods and Applications, December 3rd, 2022, New Orleans, USA}, address = {New Orleans}, year = {2022}, language = {en} } @inproceedings{MuellerBraun2022, author = {M{\"u}ller, Patrick and Braun, Alexander}, title = {Simulating optical properties to access novel metrological parameter ranges and the impact of different model approximations}, series = {2022 IEEE International Workshop on Metrology for Automotive (MetroAutomotive), 4-6 July 2022}, booktitle = {2022 IEEE International Workshop on Metrology for Automotive (MetroAutomotive), 4-6 July 2022}, publisher = {IEEE}, isbn = {978-1-6654-6689-9}, doi = {10.1109/MetroAutomotive54295.2022.9855079}, pages = {133 -- 138}, year = {2022}, language = {en} } @inproceedings{WohlmacherMertlKlapperichetal.2022, author = {Wohlmacher, Bernhard and Mertl, Fabian and Klapperich, Holger and Huldtgren, Alina}, title = {Hybrid Ludo: Combination of a Tangible UI for Seniors and a Web-based Ludo Game}, series = {Proceedings of the 8th International Conference on Information and Communication Technologies for Ageing Well and e-Health - ICT4AWE}, volume = {1}, booktitle = {Proceedings of the 8th International Conference on Information and Communication Technologies for Ageing Well and e-Health - ICT4AWE}, publisher = {SciTePress}, isbn = {978-989-758-566-1}, issn = {2184-4984}, doi = {10.5220/0011069500003188}, pages = {290}, year = {2022}, language = {en} } @inproceedings{HuldtgrenKlapperichEndter2022, author = {Huldtgren, Alina and Klapperich, Holger and Endter, Cordula}, title = {Next Steps for User Integration in ICT for Aging Well}, series = {Proceedings of the 8th International Conference on Information and Communication Technologies for Ageing Well and e-Health April 23-25, 2022}, booktitle = {Proceedings of the 8th International Conference on Information and Communication Technologies for Ageing Well and e-Health April 23-25, 2022}, editor = {Ziefle, Martina and Mulvenna, Maurice and Maciaszek, Leszek}, publisher = {SciTePress}, isbn = {978-989-758-566-1}, issn = {2184-4984}, doi = {10.5220/0011072700003188}, pages = {291 -- 298}, year = {2022}, language = {en} } @inproceedings{WohlmacherMertlKlapperichetal.2022, author = {Wohlmacher, Bernhard and Mertl, Fabian and Klapperich, Holger and Huldtgren, Alina}, title = {Hybrid Ludo: Combination of a Tangible UI for Seniors and a Web-based Ludo Game}, series = {Proceedings of the 8th International Conference on Information and Communication Technologies for Ageing Well and e-Health, April 23-25, 2022}, booktitle = {Proceedings of the 8th International Conference on Information and Communication Technologies for Ageing Well and e-Health, April 23-25, 2022}, editor = {Ziefle, Martina and Mulvenna, Maurice and Maciaszek, Leszek}, publisher = {SciTePress}, isbn = {978-989-758-566-1}, issn = {2184-4984}, doi = {10.5220/0011069500003188}, pages = {283 -- 290}, year = {2022}, language = {en} } @article{BiswasMandalMannaetal.2022, author = {Biswas, Nirmalendu and Mandal, Dipak Kumar and Manna, Nirmal K. and Benim, Ali Cemal}, title = {Magneto-hydrothermal triple-convection in a W-shaped porous cavity containing oxytactic bacteria}, series = {scientific reports}, volume = {12}, journal = {scientific reports}, publisher = {Springer Nature}, issn = {2045-2322}, doi = {10.1038/s41598-022-18401-7}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-40041}, year = {2022}, abstract = {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.}, language = {en} } @inproceedings{GroteRammSchoenig2022, author = {Grote-Ramm, Wolfgang and Sch{\"o}nig, Felix}, title = {Model Predictive Control of Solar Receivers}, series = {25th Cologne Solar Colloquium (DLR)}, booktitle = {25th Cologne Solar Colloquium (DLR)}, pages = {17}, year = {2022}, language = {en} } @techreport{DeckertKeszlerSchmitzetal.2022, author = {Deckert, Carsten and Keszler, Julia and Schmitz, Helen and Mohya, Ahmed}, title = {Forecasting Game: Teaching Prospective Engineers Quantitative Forecasting Techniques with a Simulation Game}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, issn = {2627-8375}, doi = {10.20385/opus4-3905}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-39057}, pages = {43}, year = {2022}, abstract = {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.}, language = {en} } @inproceedings{RakowFaeskornWoykeSaatzetal.2022, author = {Rakow, Thomas C. and Faeskorn-Woyke, Heide and Saatz, Inga Marina and Knolle, Harm}, title = {OER Tools and Courses for Teaching Database Systems as Developed in the Project EILD.nrw}, series = {LWDA'22: Lernen, Wissen, Daten, Analysen. October 05-07, 2022, Hildesheim, Germany}, volume = {CEUR Workshop Proceedings: 3341}, booktitle = {LWDA'22: Lernen, Wissen, Daten, Analysen. October 05-07, 2022, Hildesheim, Germany}, editor = {Reuss, Pascal and Eisenstadt, Viktor and Sch{\"o}nborn, Jakob and Sch{\"a}fer, Jero}, address = {Aachen}, issn = {1613-0073}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-40622}, year = {2022}, abstract = {In the EILD.nrw project, Open Educational Resources (OER) are being developed for teaching databases. Instructors can use the tools and courses in a variety of learning scenarios. Students of computer science and application subjects learn the complete life cycle of databases. For this purpose, quizzes, interactive tools, instructional videos, and courses for learning management systems are developed and published under a Creative Commons license.}, language = {en} } @misc{Seidel2021, author = {Seidel, Carl Anton}, title = {Jumping Humanoid Simulink Simulation With Three Hill-Type Muscle Models}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-33765}, year = {2021}, abstract = {This paper investigates the implementation of a human body model for the simulation of a jumping motion in Simulink. It contains details to get an insight into modern biomechanics without previous experience. In the simulation, a Hill-Type muscle is used to generate joint momentum with a phenomenologically realistic relationship between muscle length and force. The simulation published with this article is one of many solutions to design a humanoid simulation. The paper guides through the implemented build and explains its range of application.}, language = {en} } @article{FrankRoedderNeefetal.2021, author = {Frank, Lena and R{\"o}dder, Maximilian and Neef, Matthias and Adam, Mario}, title = {Heating, Ventilation, Domestic Appliances - an Energy Integrated System Concept for the Household of the Future}, series = {Energy}, volume = {234}, journal = {Energy}, publisher = {Elsevier}, issn = {0360-5442}, doi = {10.1016/j.energy.2021.121303}, year = {2021}, language = {en} } @article{vonBergSteffensWeinzierletal.2021, author = {von Berg, Markus and Steffens, Jochen and Weinzierl, Stefan and M{\"u}llensiefen, Daniel}, title = {Assessing room acoustic listening expertise}, series = {Journal of the Acoustical Society of America}, volume = {150}, journal = {Journal of the Acoustical Society of America}, number = {4}, publisher = {Acoustical Society of America}, doi = {10.1121/10.0006574}, pages = {2539-2548}, year = {2021}, abstract = {Musicians and music professionals are often considered to be expert listeners for listening tests on room acoustics. However, these tests often target acoustic parameters other than those typically relevant in music such as pitch, rhythm, amplitude, or timbre. To assess the expertise in perceiving and understanding room acoustical phenomena, a listening test battery was constructed to measure the perceptual sensitivity and cognitive abilities in the identification of rooms with different reverberation times and different spectral envelopes. Performance in these tests was related to data from the Goldsmiths Musical Sophistication Index, self-reported previous experience in music recording and acoustics, and academic knowledge on acoustics. The data from 102 participants show that sensory and cognitive abilities are both correlated significantly with musical training, analytic listening skills, recording experience, and academic knowledge on acoustics, whereas general interest in and engagement with music do not show any significant correlations. The regression models, using only significantly correlated criteria of musicality and professional expertise, explain only small to moderate amounts (11\%-28\%) of the variance in the "room acoustic listening expertise" across the different tasks of the battery. Thus, the results suggest that the traditional criteria for selecting expert listeners in room acoustics are only weak predictors of their actual performances.}, language = {en} } @article{AlSadawiBiedermannFritsche2021, author = {Al-Sadawi, L. and Biedermann, Till M. and Fritsche, M.}, title = {Passive Control of Vortex Shedding Noise of Circular Cylinders by Passive Air-Jet Blowing}, series = {Journal of Aerospace Engineering}, volume = {34}, journal = {Journal of Aerospace Engineering}, number = {5}, publisher = {American Society of Civil Engineers (ASCE)}, issn = {0893-1321}, doi = {10.1061/(asce)as.1943-5525.0001301}, year = {2021}, language = {en} } @article{UnterfraunerVoigtHofer2021, author = {Unterfrauner, Elisabeth and Voigt, Christian and Hofer, Margit}, title = {The effect of maker and entrepreneurial education on self-efficacy and creativity}, series = {Entrepreneurship Education}, volume = {4}, journal = {Entrepreneurship Education}, number = {4}, publisher = {Springer Nature}, issn = {2520-8152}, doi = {10.1007/s41959-021-00060-w}, pages = {403 -- 424}, year = {2021}, language = {en} } @article{EckhardtKaletkaPelkaetal.2021, author = {Eckhardt, Jennifer and Kaletka, Christoph and Pelka, Bastian and Unterfrauner, Elisabeth and Voigt, Christian and Zirngiebl, Marthe}, title = {Gender in the making: An empirical approach to understand gender relations in the maker movement}, series = {International Journal of Human-Computer Studies}, volume = {145}, journal = {International Journal of Human-Computer Studies}, number = {102548}, publisher = {Elsevier}, issn = {1095-9300}, doi = {10.1016/j.ijhcs.2020.102548}, year = {2021}, language = {en} } @inproceedings{BeckerLippelZielke2021, author = {Becker, Martin and Lippel, Jens and Zielke, Thomas}, title = {Dimensionality Reduction for Data Visualization and Linear Classification, and the Trade-off between Robustness and Classification Accuracy}, series = {Proceedings of ICPR 2020: 25th International Conference on Pattern Recognition, 10-15 January 2021, Milan}, booktitle = {Proceedings of ICPR 2020: 25th International Conference on Pattern Recognition, 10-15 January 2021, Milan}, editor = {Vezzani, Roberto}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-72818-808-9}, doi = {10.1109/ICPR48806.2021.9412865}, pages = {6478 -- 6485}, year = {2021}, language = {en} } @article{SeebacherVanaVoigtetal.2021, author = {Seebacher, Lisa M. and Vana, Irina and Voigt, Christian and Tschank, Juliet}, title = {Is Science for Everyone? Exploring Intersectional Inequalities in Connecting With Science}, series = {Frontiers in Education}, volume = {6}, journal = {Frontiers in Education}, publisher = {Frontiers}, issn = {2504-284X}, doi = {10.3389/feduc.2021.673850}, year = {2021}, language = {en} } @article{GirodLohmannKaluza2021, author = {Girod, Kai and Lohmann, Heiko and Kaluza, Stefan}, title = {Methanol Synthesis with Steel Mill Gases: Performance Investigations in an On-Site Technical Center}, series = {Chemie Ingenieur Technik}, volume = {93}, journal = {Chemie Ingenieur Technik}, number = {5}, publisher = {Wiley}, organization = {Wiley}, issn = {1522-2640}, doi = {10.1002/cite.202000230}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-34409}, pages = {850 -- 855}, year = {2021}, language = {en} } @book{NiemannPisla2021, author = {Niemann, J{\"o}rg and Pisla, Adrian}, title = {Life-Cycle Management of Machines and Mechanisms}, series = {Mechanisms and Machine Science}, volume = {90}, journal = {Mechanisms and Machine Science}, publisher = {Springer International Publishing}, address = {Cham}, isbn = {978-3-030-56447-6}, doi = {10.1007/978-3-030-56449-0}, year = {2021}, language = {en} } @article{GuoZouRuess2021, author = {Guo, Yujie and Zou, Zhihui and Ruess, Martin}, title = {Isogeometric multi-patch analyses for mixed thin shells in the framework of non-linear elasticity}, series = {Computer Methods in Applied Mechanics and Engineering}, volume = {380}, journal = {Computer Methods in Applied Mechanics and Engineering}, publisher = {Elsevier}, issn = {0045-7825}, doi = {10.1016/j.cma.2021.113771}, pages = {49 -- 52}, year = {2021}, language = {en} } @article{DasBhattacharyyaChattopadhyayetal.2021, author = {Das, Sampad Gobinda and Bhattacharyya, Suvanjan and Chattopadhyay, Himadri and Benim, Ali Cemal}, title = {Transport Phenomenon of Simultaneously Developing Flow and Heat Transfer in Twisted Sinusoidal Wavy Microchannel under Pulsating Inlet Flow Condition}, series = {Heat Transfer Engineering}, journal = {Heat Transfer Engineering}, publisher = {Taylor \& Francis}, doi = {10.1080/01457632.2021.1875166}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-27697}, pages = {1 -- 14}, year = {2021}, language = {en} } @article{PfeiffelmannBenimJoos2021, author = {Pfeiffelmann, Bj{\"o}rn and Benim, Ali Cemal and Joos, Franz}, title = {Computational Investigation of Impingement Cooling of Thermoelectric Generators}, series = {Heat Transfer Engineering}, volume = {42}, journal = {Heat Transfer Engineering}, number = {3-4}, publisher = {Taylor \& Francis}, issn = {0145-7632}, doi = {10.1080/01457632.2019.1699296}, pages = {282 -- 295}, year = {2021}, language = {en} } @article{KuskeBorgmannWolfetal.2021, author = {Kuske, Silke and Borgmann, Sandra Olivia and Wolf, Florian and Bleck, Christian}, title = {Emotional Safety in the Context of Dementia: A Multiperspective Qualitative Study}, series = {Journal of Alzheimer's disease}, volume = {79}, journal = {Journal of Alzheimer's disease}, number = {1}, publisher = {IOS}, doi = {10.3233/jad-201110}, pages = {355 -- 375}, year = {2021}, language = {en} } @article{Manthe2021, author = {Manthe, Barbara}, title = {On the Pathway to Violence: West German Right-Wing Terrorism in the 1970s}, series = {Terrorism and Political Violence}, volume = {33}, journal = {Terrorism and Political Violence}, number = {1}, publisher = {Taylor \& Francis}, issn = {0954-6553}, doi = {10.1080/09546553.2018.1520701}, pages = {49 -- 70}, year = {2021}, language = {en} } @misc{Brummel2021, type = {Master Thesis}, author = {Brummel, Mattis}, title = {Performance evaluation of state-of-the-art computer vision systems in the field of autonomous driving in dependency of optical parameters}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-37508}, school = {Hochschule D{\"u}sseldorf}, pages = {121}, year = {2021}, language = {en} } @inproceedings{TriebusDruzeticDewitzetal.2021, author = {Triebus, Charlotte and Druzetic, Ivana and Dewitz, Bastian and Huhn, Calvin and Kretschel, Paul and Geiger, Christian}, title = {is a rose - A Performative Installation between the Tangible and the Digital}, series = {Proceedings of the Fifteenth International Conference on Tangible, Embedded, and Embodied Interaction}, booktitle = {Proceedings of the Fifteenth International Conference on Tangible, Embedded, and Embodied Interaction}, editor = {Wimmer, Raphael and Kaltenbrunner, Martin and Murer, Martin and Wolf, Katrin and Oakley, Ian}, publisher = {ACM}, address = {New York}, isbn = {9781450382137}, doi = {10.1145/3430524.3444640}, pages = {1 -- 4}, year = {2021}, language = {en} } @article{BehbehaniSteffens2021, author = {Behbehani, Sami and Steffens, Jochen}, title = {Musical DIAMONDS: The influence of situational classes and characteristics on music listening behavior}, series = {Psychology of Music}, volume = {49}, journal = {Psychology of Music}, number = {6}, publisher = {sage journals}, issn = {1741-3087}, doi = {10.1177/0305735620968910}, pages = {1532 -- 1545}, year = {2021}, language = {en} } @article{HuberRidderVerhoevenetal.2021, author = {Huber, Florian and Ridder, Lars and Verhoeven, Stefan and Spaaks, Jurriaan H. and Diblen, Faruk and Rogers, Simon and van der Hooft, Justin J. J.}, title = {Spec2Vec: Improved mass spectral similarity scoring through learning of structural relationships}, series = {PLOS Computational Biology}, volume = {17}, journal = {PLOS Computational Biology}, number = {2}, publisher = {Cold Spring Harbor Laboratory}, organization = {PLOS}, issn = {1553-7358}, doi = {10.1371/journal.pcbi.1008724}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-34687}, year = {2021}, abstract = {Spectral similarity is used as a proxy for structural similarity in many tandem mass spectrometry (MS/MS) based metabolomics analyses such as library matching and molecular networking. Although weaknesses in the relationship between spectral similarity scores and the true structural similarities have been described, little development of alternative scores has been undertaken. Here, we introduce Spec2Vec, a novel spectral similarity score inspired by a natural language processing algorithm-Word2Vec. Spec2Vec learns fragmental relationships within a large set of spectral data to derive abstract spectral embeddings that can be used to assess spectral similarities. Using data derived from GNPS MS/MS libraries including spectra for nearly 13,000 unique molecules, we show how Spec2Vec scores correlate better with structural similarity than cosine-based scores. We demonstrate the advantages of Spec2Vec in library matching and molecular networking. Spec2Vec is computationally more scalable allowing structural analogue searches in large databases within seconds.}, language = {en} } @article{SchornVerhoevenRidderetal.2021, author = {Schorn, Michelle A. and Verhoeven, Stefan and Ridder, Lars and Huber, Florian and Acharya, Deepa D. and Aksenov, Alexander A. and Aleti, Gajender and Moghaddam, Jamshid Amiri and Aron, Allegra T. and Aziz, Saefuddin and Bauermeister, Anelize and Bauman, Katherine D. and Baunach, Martin and Beemelmanns, Christine and Beman, J. Michael and Berlanga-Clavero, Mar{\´i}a Victoria and Blacutt, Alex A. and Bode, Helge B. and Boullie, Anne and Brejnrod, Asker and Bugni, Tim S. and Calteau, Alexandra and Cao, Liu and Carri{\´o}n, V{\´i}ctor J. and Castelo-Branco, Raquel and Chanana, Shaurya and Chase, Alexander B. and Chevrette, Marc G. and Costa-Lotufo, Leticia V. and Crawford, Jason M. and Currie, Cameron R. and Cuypers, Bart and Dang, Tam and de Rond, Tristan and Demko, Alyssa M. and Dittmann, Elke and Du, Chao and Drozd, Christopher and Dujardin, Jean-Claude and Dutton, Rachel J. and Edlund, Anna and Fewer, David P. and Garg, Neha and Gauglitz, Julia M. and Gentry, Emily C. and Gerwick, Lena and Glukhov, Evgenia and Gross, Harald and Gugger, Muriel and Guill{\´e}n Matus, Dulce G. and Helfrich, Eric J. N. and Hempel, Benjamin-Florian and Hur, Jae-Seoun and Iorio, Marianna and Jensen, Paul R. and Kang, Kyo Bin and Kaysser, Leonard and Kelleher, Neil L. and Kim, Chung Sub and Kim, Ki Hyun and Koester, Irina and K{\"o}nig, Gabriele M. and Leao, Tiago and Lee, Seoung Rak and Lee, Yi-Yuan and Li, Xuanji and Little, Jessica C. and Maloney, Katherine N. and M{\"a}nnle, Daniel and Martin H, Christian and McAvoy, Andrew C. and Metcalf, Willam W. and Mohimani, Hosein and Molina-Santiago, Carlos and Moore, Bradley S. and Mullowney, Michael W. and Muskat, Mitchell and Nothias, Louis-F{\´e}lix and O'Neill, Ellis C. and Parkinson, Elizabeth I. and Petras, Daniel and Piel, J{\"o}rn and Pierce, Emily C. and Pires, Karine and Reher, Raphael and Romero, Diego and Roper, M. Caroline and Rust, Michael and Saad, Hamada and Saenz, Carmen and Sanchez, Laura M. and S{\o}rensen, S{\o}ren Johannes and Sosio, Margherita and S{\"u}ssmuth, Roderich D. and Sweeney, Douglas and Tahlan, Kapil and Thomson, Regan J. and Tobias, Nicholas J. and Trindade-Silva, Amaro E. and van Wezel, Gilles P. and Wang, Mingxun and Weldon, Kelly C. and Zhang, Fan and Ziemert, Nadine and Duncan, Katherine R. and Cr{\"u}semann, Max and Rogers, Simon and Dorrestein, Pieter C. and Medema, Marnix H. and van der Hooft, Justin J. J.}, title = {A community resource for paired genomic and metabolomic data mining}, series = {Nature Chemical Biology}, volume = {17}, journal = {Nature Chemical Biology}, number = {4}, publisher = {Nature}, issn = {1552-4469}, doi = {10.1038/s41589-020-00724-z}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-34708}, pages = {363 -- 368}, year = {2021}, language = {en} } @article{BeniddirKangGentaJouveetal.2021, author = {Beniddir, Mehdi A. and Kang, Kyo Bin and Genta-Jouve, Gr{\´e}gory and Huber, Florian and Rogers, Simon and van der Hooft, Justin J. J.}, title = {Advances in decomposing complex metabolite mixtures using substructure- and network-based computational metabolomics approaches}, series = {Natural Product Reports}, volume = {38}, journal = {Natural Product Reports}, number = {11}, publisher = {The Royal Society of Chemistry}, issn = {1460-4752}, doi = {10.1039/D1NP00023C}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-34772}, pages = {1967 -- 1993}, year = {2021}, language = {en} } @inproceedings{KrauseBakerJGroarkeetal.2021, author = {Krause, Amanda and Baker J., David and Groarke, Jenny and Pereira, Ana I. and Liew, Kongmeng and Anglada-Tort, Manuel and Steffens, Jochen}, title = {A global investigation of music listening practices: The influence of country latitude and seasons on music preferences}, series = {ICMPC-ESCOM 2021: 16th International Conference on Music Perception and Cognition/11th Triennial conference of the European Society for the Cognitive Sciences of Music, 28-31 July 2021, Sheffield}, booktitle = {ICMPC-ESCOM 2021: 16th International Conference on Music Perception and Cognition/11th Triennial conference of the European Society for the Cognitive Sciences of Music, 28-31 July 2021, Sheffield}, address = {Sheffield}, year = {2021}, language = {en} } @article{TsengMoslehMannanetal.2021, author = {Tseng, Ethan and Mosleh, Ali and Mannan, Fahim and St-Arnaud, Karl and Sharma, Avinash and Peng, Yifan and Braun, Alexander and Nowrouzezahrai, Derek and Lalonde, Jean-Fran{\c{c}}ois and Heide, Felix}, title = {Differentiable Compound Optics and Processing Pipeline Optimization for End-to-end Camera Design}, series = {ACM Transactions on Graphics}, volume = {40}, journal = {ACM Transactions on Graphics}, number = {2}, publisher = {Association for Computing Machinery}, address = {New York, NY, USA}, issn = {1557-7368}, doi = {10.1145/3446791}, pages = {1 -- 19}, year = {2021}, abstract = {Most modern commodity imaging systems we use directly for photography--or indirectly rely on for downstream applications--employ optical systems of multiple lenses that must balance deviations from perfect optics, manufacturing constraints, tolerances, cost, and footprint. Although optical designs often have complex interactions with downstream image processing or analysis tasks, today's compound optics are designed in isolation from these interactions. Existing optical design tools aim to minimize optical aberrations, such as deviations from Gauss' linear model of optics, instead of application-specific losses, precluding joint optimization with hardware image signal processing (ISP) and highly parameterized neural network processing. In this article, we propose an optimization method for compound optics that lifts these limitations. We optimize entire lens systems jointly with hardware and software image processing pipelines, downstream neural network processing, and application-specific end-to-end losses. To this end, we propose a learned, differentiable forward model for compound optics and an alternating proximal optimization method that handles function compositions with highly varying parameter dimensions for optics, hardware ISP, and neural nets. Our method integrates seamlessly atop existing optical design tools, such as Zemax. We can thus assess our method across many camera system designs and end-to-end applications. We validate our approach in an automotive camera optics setting--together with hardware ISP post processing and detection--outperforming classical optics designs for automotive object detection and traffic light state detection. For human viewing tasks, we optimize optics and processing pipelines for dynamic outdoor scenarios and dynamic low-light imaging. We outperform existing compartmentalized design or fine-tuning methods qualitatively and quantitatively, across all domain-specific applications tested.}, language = {en} } @inproceedings{Gottschald2021, author = {Gottschald, Joans}, title = {Data Driven Model Predictive Control of a District Heating Network}, series = {Smart Energy Systems International Conference 2021, 21.09.2021,}, booktitle = {Smart Energy Systems International Conference 2021, 21.09.2021,}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, year = {2021}, language = {en} } @inproceedings{NeumannAdamBackesetal.2021, author = {Neumann, Hannah and Adam, Mario and Backes, Klaus and B{\"o}rner, Martin and Clees, Tanja and Doetsch, Christian and Glaeser, Susanne and Herrmann, Ulf and May, Johanna and Rosenthal, Florian and Sauer, Dirk Uwe and Stadler, Ingo}, title = {Development of open educational resources for renewable energy and the energy transition process}, series = {ISES SWC 2021: Solar World Congress Virtual Conference, 25.-29. Oktober 2021}, booktitle = {ISES SWC 2021: Solar World Congress Virtual Conference, 25.-29. Oktober 2021}, organization = {The International Solar Energy Society (ISES)}, year = {2021}, language = {en} } @article{DenizCanalBokeAydinetal.2021, author = {Deniz Canal, Cansu and Boke, Yakup Erhan and Aydin, Ozer and Benim, Ali Cemal}, title = {COMPUTATIONAL ANALYSIS OF PULVERIZED COAL CO-FIRING WITH BIOMASS IN 150MWe UNIT OF TUNCBILEK THERMAL POWER PLANT}, series = {Isi Bilimi ve Teknigi Dergisi - Journal of Thermal Science and Technology}, volume = {41}, journal = {Isi Bilimi ve Teknigi Dergisi - Journal of Thermal Science and Technology}, number = {1}, issn = {1300-3615}, doi = {10.47480/isibted.979314}, pages = {37 -- 50}, year = {2021}, language = {en} } @misc{Radtke2021, type = {Master Thesis}, author = {Radtke, Linn}, title = {Power and Intersectionality Matters! Gender Training in Development}, address = {D{\"u}sseldorf}, organization = {Hochschule D{\"u}sseldorf}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-37462}, school = {Hochschule D{\"u}sseldorf}, pages = {137}, year = {2021}, subject = {Gender}, language = {en} } @article{FallingKaluzaStrucks2021, author = {Falling, Luisa and Kaluza, Stefan and Strucks, Peter}, title = {A Short Review on Ni-Catalyzed Methanation of CO²: Reaction Mechanism, Catalyst Deactivation, Dynamic Operation}, series = {Chemie Ingenieur Technik}, volume = {93}, journal = {Chemie Ingenieur Technik}, publisher = {Wiley}, issn = {1522-2640}, doi = {10.1002/cite.202100049}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-32134}, pages = {1526 -- 1536}, year = {2021}, abstract = {Today, the use of renewable energies and recycling of climate-changing gases are increasingly important. In this context,coupling of methanation with small, decentralized CO2sources such as biogas plants provides one possibility. However,fluctuating availability of renewables for hydrogen production in combination with small storage volumes result in anenhanced demand for dynamic process operation. This leads to new research challenges with respect to the required cata-lysts and the overall process design. To draw reliable conclusions about the catalytic performance under dynamic processoperation, the mechanism of the methanation reaction as well as typical deactivation procedures of the catalyst appliedunder steady-state conditions have to be reviewed thoroughly.}, language = {en} } @incollection{DavinHerder2021, author = {Davin, Till and Herder, Jens}, title = {Real-Time Relighting of Video Streams for Augmented Virtuality Scenes}, series = {GI VR / AR Workshop. Gesellschaft f{\"u}r Informatik e.V.}, booktitle = {GI VR / AR Workshop. Gesellschaft f{\"u}r Informatik e.V.}, editor = {Weier, Martin and Bues, Matthias and Wechner, Reto}, publisher = {Gesellschaft f{\"u}r Informatik e.V. (GI)}, address = {Bonn}, doi = {10.18420/vrar2021_6}, publisher = {Hochschule D{\"u}sseldorf}, pages = {16}, year = {2021}, language = {en} } @article{BenimCanalBoke2021, author = {Benim, Ali Cemal and Canal, Cansu Deniz and Boke, Yakup Erhan}, title = {A Validation Study for RANS Based Modelling of Swirling Pulverized Fuel Flames}, series = {Energies}, volume = {14}, journal = {Energies}, number = {21}, publisher = {MDPI}, issn = {1996-1073}, doi = {10.3390/en14217323}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-37365}, year = {2021}, abstract = {A swirling pulverized coal flame is computationally investigated. A Eulerian-Lagrangian formulation is used to describe the two-phase flow. Turbulence is modelled within a RANS (Reynolds averaged numerical simulation) framework. Four turbulence viscosity- (TV) based models, namely the standard k-ε model, realizable k-ε model, renormalization group theory k-ε model, and the shear stress transport k-ω model are used. In addition, a Reynolds stress transport model (RSM) is employed. The models are assessed by comparing the predicted velocity fields with the measurements of other authors. In terms of overall average values, the agreement of the predictions to the measurements is observed to be within the range 20-40\%. A better performance of the RSM compared to the TV models is observed, with a nearly twice as better overall agreement to the experiments, particularly for the swirl velocity. In the second part of the investigation, the resolution of the discrete particle phase in modelling the turbulent particle dispersion (TPD) and particle size distribution (SD) is investigated. Using the discrete random walk model for the TPD, it is shown that even five random walks are sufficient for an accuracy that is quite high, with a less than 1\% mean deviation from the solution obtained by thirty random walks. The approximation of the measured SD is determined by a continuous Rosin-Rammler distribution function, and inaccuracies that can occur in its subsequent discretization are demonstrated and discussed. An investigation on the resolution of the SD by discrete particle size classes (SC) indicates that 12 SC are required for an accuracy with a less than 1\% mean deviation from the solution with 18 SC. Although these numbers may not necessarily be claimed to be sufficiently universal, they may serve as guidance, at least for SD with similar characteristics}, language = {en} } @article{StrucksWatermannWeberetal.2021, author = {Strucks, Peter and Watermann, Clara and Weber, Konradin and Kaluza, Stefan}, title = {Systematic Investigations of Vibrational and Fluid-Mechanical Stability of Coated Monolithic Catalysts}, series = {Chemie Ingenieur Technik}, volume = {93}, journal = {Chemie Ingenieur Technik}, number = {5}, publisher = {Wiley}, issn = {1522-2640}, doi = {10.1002/cite.202000233}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-28930}, pages = {1 -- 6}, year = {2021}, abstract = {Heterogeneous catalysts usually consist of porous, inorganic materials. Especially in the mobile application, e.g., in exhaust gas catalysis as a part of the gas line of an engine, there are loads due to vibrations and high gas velocities. It can be assumed that physical stress will lead to a loss of the catalytically active coating. The present contribution describes experimental setups and methods for a systematic and reproducible investigation of the main influences to the mass loss due to vibrational and fluid-mechanical stress caused by particle-free gas flows.}, language = {en} }