@inproceedings{JanduraWeinmann2023, author = {Jandura, Olaf and Weinmann, Carina}, title = {Greater Confusion in the Voter Market in Germany: Differences Between Subjective and Value-Based Categorization on the Left-Right Axis}, series = {Jahrestagung der DGPuK-Fachgruppe Rezeptions- und Wirkungsforschung 2022: Tagungsband}, booktitle = {Jahrestagung der DGPuK-Fachgruppe Rezeptions- und Wirkungsforschung 2022: Tagungsband}, editor = {Ziegele, Marc and K{\"u}mpel, Anna Sophie and Dienlin, Tobias}, publisher = {SSOAR}, address = {D{\"u}sseldorf}, doi = {10.21241/ssoar.96575}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-56419}, pages = {75 -- 92}, year = {2023}, abstract = {In den letzten Jahren war h{\"a}ufig von einem Rechtsruck in der Gesellschaft die Rede (O. Decker et al., 2016). Bev{\"o}lkerungsrepr{\"a}sentative Umfragedaten belegen diese These jedoch nicht. Weder die Allgemeine Bev{\"o}lkerungsumfrage der Sozialwissenschaften (ALLBUS) noch der European Social Survey zeigen f{\"u}r die letzten Jahrzehnte signifikante Ver{\"a}nderungen in der Selbstpositionierung der Befragten auf der Links-Rechts-Skala. Dies wirft die Frage auf, ob es sich bei dem behaupteten gesellschaftlichen Rechtsruck um ein soziologisches Wahrnehmungsph{\"a}nomen handelt, das durch die intensive {\"o}ffentliche Debatte verst{\"a}rkt wird, oder ob Zweifel an der Validit{\"a}t der politischen Selbstpositionierung auf der Links-Rechts-Skala angebracht sind. Der vorliegende Artikel befasst sich mit der letzteren Frage. Unsere Analysen ergaben, dass bei 31 \% der Befragten in unserer Stichprobe eine Divergenz zwischen der subjektiven Positionierung auf der Links-Rechts-Skala und einer wertbezogenen Positionierung besteht. Wir er{\"o}rtern, welche Variablen diese Divergenz erkl{\"a}ren k{\"o}nnen und welche Konsequenzen daraus f{\"u}r die kommunikationswissenschaftliche Forschung gezogen werden k{\"o}nnen.}, subject = {Politische Einstellung}, language = {en} } @inproceedings{DewitzMoazemiKalkhoffetal.2023, author = {Dewitz, Bastian and Moazemi, Sobhan and Kalkhoff, Sebastian and Kessler, Steven and Geiger, Christian and Steinicke, Frank and Aubin, Hug and Schmid, Falko}, title = {Enacted Selves in Technological Activities - Framework and Case Study in Immersive Telementoring}, series = {Mensch und Computer 2023 (MuC '23), September 03--06, 2023, Rapperswil, Switzerland.}, booktitle = {Mensch und Computer 2023 (MuC '23), September 03--06, 2023, Rapperswil, Switzerland.}, editor = {Stolze, Markus and Loch, Frieder and Baldauf, Matthias and Alt, Florian and Schneegass, Christina and Kosch, Thomas and Hirzle, Teresa and Sadeghian, Shadan and Draxler, Fiona and Bektas, Kenan and Lohan, Katrin and Knierim, Pascal}, publisher = {ACM}, address = {New York}, isbn = {979-8-4007-0771-1}, doi = {10.1145/3603555.3603576}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-49665}, pages = {289 -- 299}, year = {2023}, abstract = {The incorporation of new technology into existing human activities can be challenging. Numerous models have been proposed in human-computer interaction (HCI) to guide research and analyze effects. However, bridging the gap between experimental data and real-world applications often proves to be difficult. In the last decades, post-cognitivistic approaches have been developed to explain human cognition and the relation between humans and their environment. In this paper, we present a novel framework to systematically describe and analyze challenges in the context of HCI from multiple perspectives. It extends Cultural-Historical Activity Theory (CHAT) and is enriched by contemporary philosophical perspectives (enactivism, pattern theory of self and post-phenomenology). The proposed framework is further illustrated by applying it to an immersive telementoring prototype system.}, subject = {Mensch-Maschine-Kommunikation}, language = {en} } @inproceedings{DeckertMohya2023, author = {Deckert, Carsten and Mohya, Ahmed}, title = {Tinkering, Tools and Techniques - Creativity in German Engineering Education}, series = {AIJR Proceedings: Proceedings of the 14th European Conference on Creativity in Innovation}, booktitle = {AIJR Proceedings: Proceedings of the 14th European Conference on Creativity in Innovation}, editor = {Heijne, Katrina}, publisher = {AIJR Publisher}, issn = {2582-3922}, doi = {10.21467/proceedings.154.2}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-51142}, pages = {11 -- 18}, year = {2023}, abstract = {Purpose - Engineers are expected to be the creative problem solvers and innovative tinkerers of a company. This article examines to what extent German tertiary education lives up to this expectation. The analysis of German module descriptions in engineering shows that there are no courses dedicated to creativity and that creativity and its techniques are mentioned only sparsely in the modules of the engineering curriculum. Surveys amongst our students show that they are usually familiar with techniques which are based on generating alternatives such as brainstorming and morphological box, but lack knowledge about techniques based on challenging assumptions such as forced connection. They tend to favour discursive techniques over intuitive ones and techniques which use generation of alternatives as an idea-generating principle. A combination of creativity techniques seems to be most conducive to creative output in our course. Finally, we present some first findings on creative sessions in remote work with the help of virtual whiteboards, which have gained in importance since the pandemic. Methodology - Firstly, we present an document analysis of the modules of Bachelor and Master programs of mechanical engineering at German universities and universities of applied sciences. Secondly, we present results from surveys in our Master course in "Innovation and Technology Management" where we gathered data from students over several years and performed an external evaluation of the output using Consensual Assessment Technique (CAT). These results include which creativity techniques the students know prior to the course and which they prefer as well as which techniques seem to be conducive to engineering creativity. Furthermore we surveyed their experiences with creative sessions as remote work. Conclusion - Overall, the article shows the importance to teach prospective engineers the basics in creativity. Students should have the opportunity to acquire knowledge about and apply different creativity techniques, as different techniques have different strengths and weaknesses and, thus, different areas of fruitful application. They should also have the chance to try out different modes such as in-person sessions and virtual sessions, as some of the future work will most likely shift online. Furthermore, a combination of different creativity techniques makes it more likely that engineers break through their usual systematic-analytic way of thinking and helps them to think outside the box to find creative solutions for the pressing problems of our time.}, subject = {Ingenieurstudium}, language = {en} } @inproceedings{DeckertMohya2023, author = {Deckert, Carsten and Mohya, Ahmed}, title = {Teaching Sustainable Logistics As A Project-Based Learning Course}, series = {European Society for Engineering Education (SEFI), 11-14 September 2023, TUDublin, Ireland}, booktitle = {European Society for Engineering Education (SEFI), 11-14 September 2023, TUDublin, Ireland}, publisher = {TU Dublin}, address = {Dublin}, doi = {10.21427/9D3F-KA64}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-51182}, year = {2023}, abstract = {Sustainable logistics combines the task of the 6R of logistics (right product, right place, right time, right condition, right cost) with social and environmental sustainability, especially low emissions and low resource consumption. This means that a problem that is already challenging, namely planning, executing, and controlling logistical processes, gets even more complex and requires aspects of systems thinking to incorporate environmental and social impacts. Classical approaches of teaching, e.g. lectures with presentations and short exercises on closed problems, do not do justice to the complexity and intricacies of the topic sustainability. In such a context, projectbased learning (PBL) where students do group work on open-ended problems with real-world complexity seems to be a more adequate means to teach the subject. The paper describes a PBL course in which students worked on projects to conceptualize micro-depots for parcel delivery in different areas of D{\"u}sseldorf. A micro-depot is a temporary storage location in a city from which parcels can be delivered by cargo bikes. The aim was to locate the micro-depot, design the delivery routes, check the feasibility, and calculate the reduction of greenhouse gases and other emissions. The course was taught in cooperation with a partner from the courier, express, and parcel delivery industry. The paper describes the experiences with the course and gives recommendations for a successful implementation of PBL in courses on sustainability.}, subject = {Ingenieurstudium}, language = {en} } @misc{Deckert2023, author = {Deckert, Carsten}, title = {Review of: "Liberalism Caused the Great Enrichment"}, publisher = {Qeios Ltd}, doi = {10.32388/XZT5XF}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-51193}, year = {2023}, language = {en} } @article{MunnichDederichsKleinetal.2023, author = {Munnich, Patrick and Dederichs, Stefanie and Klein, Paula and Bruno Figura, Carl}, title = {Speech Intelligibility: Lateral Lisp Detection for Real-Time Monitoring}, series = {Current Directions in Biomedical Engineering}, volume = {9}, journal = {Current Directions in Biomedical Engineering}, number = {1}, publisher = {De Gruyter}, issn = {2364-5504}, doi = {10.1515/cdbme-2023-1071}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-49407}, pages = {283 -- 286}, year = {2023}, abstract = {Correcting lisps in speech can prove to be of great difficulty to many, as they may be unaware of whether they are lisping. To help those affected, we have developed a simple algorithm for the real-time identification of the sigmatismus lateralis in "S" sounds within speech via analysis in the frequency domain. The algorithm identifies peaks within the lisp's frequency band after calibration. A frequency band of 3000-4000 Hz has been identified to be generally accurate for lisp and 2500-3000 Hz for the correct pronunciation for a single male test subject. The algorithm splits given speech recordings into smaller segments and compares the number of lisps and non-lisps detected in these segments to categorize. From tests, it was concluded that a segment length of 0.5 s produces the best results. The algorithm does not detect every lisp section, however it does not raise false positives. Our implementation in Julia with multi-threaded per-file analysis is able to analyze 20 files of lengths between 5 s and 10 s within 0.21 s on a Qualcomm Snapdragon 860 smartphone chipset, meaning analysis is far faster than real-time. The proposed algorithm is a simple prototype algorithm capable of realtime analysis of audio in the frequency domain to identify whether lateral lisps are the dominant sibilant pronunciation in a given window. The method was only tested for a single test subject. However, a calibration algorithm capable of adjusting parameters to new individuals is proposed. The algorithm itself should be easily expandable to identify other speech impediments.}, subject = {Lispeln}, language = {en} } @unpublished{PtasczynskiBlaettermannGrebetal.2023, author = {Ptasczynski, Lena Esther and Bl{\"a}ttermann, Patrick and Greb, Fabian and Sterzer, Philipp and Steffens, Jochen}, title = {The vibe of musical and social reward: Listening to beat-based music acts as a surrogate for socioemotional support during the Covid-19 pandemic}, series = {Research Square}, journal = {Research Square}, edition = {v1}, publisher = {Research Square}, doi = {10.21203/rs.3.rs-2529116/v1}, pages = {34}, year = {2023}, abstract = {Music listening is subjectively efficient in surrogating socioemotional needs during the Covid-19 pandemic, although underlying mechanisms remain unclear. We here challenge the generalizability of music-based coping by testing whether the insufficient satisfaction of distinct needs during the first lockdown entails enhanced listening to beat-based music with medium complexity (BBMMC) stimulating the cortico-striatal reward circuit and triggering oxytocinergic propagation. A Quasi-Bayesian mediation analysis on open-source data revealed that, across 11 European countries, more severe social distancing measures evoke a decline in experienced social provision (SP), in turn provoking BBMMC preferences. The latter was best predicted by the SP dimensions of social reward and attachment, suggesting that the partial overlap in neurophysiological processing at dopaminergic and oxytocinergic sites enables BBMMC to specifically alleviate these socioemotional needs, which has important implications for the development of mental health interventions. Finally, a stress-alleviating effect of BBMMC was found pointing towards HPA-activity modulation through music listening.}, subject = {Psychoakustik}, language = {en} } @article{BenimCicek2023, author = {Benim, Ali Cemal and {\c{C}}i{\c{c}}ek, Ayd{\i}n}, title = {Comparative analysis of water and carbon dioxide injection for the thermohydraulics of an EGS project in Dikili Geothermal Field, T{\"u}rkiye}, series = {Bulletin Of The Mineral Research and Exploration}, volume = {171}, journal = {Bulletin Of The Mineral Research and Exploration}, publisher = {Maden Tetkik ve Arama Genel M{\"u}d{\"u}rl{\"u}ğ{\"u}}, issn = {0026-4563}, doi = {10.19111/bulletinofmre.1288731}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-49115}, pages = {91 -- 105}, year = {2023}, abstract = {A comparative numerical analysis of the thermohydraulics of an enhanced geothermal system (EGS) project in T{\"u}rkiye in Dikili area is presented. The fractured granodiorite is modelled as porous media, utilizing the numerically suggested data of other authors for the corresponding hydraulic characteristics. As the heat transmission fluid, two different mediums are alternatively considered. These are the more classical medium, water and the supercritical Carbon Dioxide (sCO2). Transient calculations are performed for a time period of twenty years, comparing the temporally developing results obtained for water and sCO2 with each other. Based on modeling parameters and assumptions, higher production temperatures are observed with sCO2, in comparison to water, implying an advantage for sCO2 usage as a working fluid in EGS. This is accompanied by the further advantage of a lower pressure drop for sCO2. On the other hand, the temperature advantage is relativized by the lower specific heat capacity of sCO2 causing a decrease in the production thermal power. In general, the present re found to be encouraging for a further and more detailed analysis of the employment of sCO2 as working fluid in EGS.}, subject = {Numerische Str{\"o}mungssimulation}, language = {en} } @article{StruweWredeVennegeerts2023, author = {Struwe, Julian and Wrede, Holger and Vennegeerts, Hendrik}, title = {Validation Aspects for Grid-Forming Converters Based on System Characteristics and Inertia Impact}, series = {Energies}, volume = {16}, journal = {Energies}, number = {21}, publisher = {MDPI}, issn = {1996-1073}, doi = {10.3390/en16217357}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-48751}, year = {2023}, abstract = {Grid-forming converters are considered a key technology for electrical grids with a high share of renewable energy. However, there is a lack of a general, robust and verifiable definition of what constitutes this behaviour. Therefore, this paper presents three simple scenarios that enable such a definition. They are based on simple black-box simulations that allow manufacturers to protect their development work. It can be shown that grid forming can be clearly distinguished from grid-following controls by their grid behaviour in the proposed scenarios. Extensive results illustrate this and also provide suggestions to deepen the understanding of grid-forming grid behaviour and its impact on system inertia. These findings should inspire the development of a clear definition and ultimately new requirements for converter systems.}, subject = {Stromrichter}, language = {en} } @inproceedings{SteffensWeinzierl2023, author = {Steffens, Jochen and Weinzierl, Stefan}, title = {Noise for dinner - Towards a comprehensive statistical model of the acoustical and overall quality of restaurants}, series = {Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023, September 11 - 15, 2023,Torino, Italy}, booktitle = {Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023, September 11 - 15, 2023,Torino, Italy}, editor = {Astolfi, Arianna and Asdrubali, Francesco and Shtrepi, Louena}, publisher = {European Acoustics Association}, address = {Turin, Italy}, isbn = {978-88-88942-67-4}, issn = {2221-3767}, doi = {10.61782/fa.2023.0483}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-47908}, pages = {3325 -- 3327}, year = {2023}, abstract = {Studies on noise in restaurants have shown a multitude of potential negative effects, for example related to mood, overall satisfaction, intended revisit, the ability to communicate and the actual behaviour in the room. In this paper, we investigated the complex interplay between room acoustics, soundscape evaluation, non-acoustical aspects of a restaurant visit and overall restaurant quality. Based on acoustical measurements and reports from 142 persons visiting 12 restaurants in Berlin, we propose a structural equation model including both acoustical and non- acoustical factors and yielding a good overall fit. The model, for instance, suggests that the A-weighted sound level negatively impacts the assessment of overall restaurant quality, while the effect of soundscape pleasantness on overall restaurant quality is mediated by the restaurant's perceived atmosphere. Moreover, the reverberation time was found to be effective predominantly through its effect on sound strength, which leads patrons to increasingly raise their speech level to ensure intelligibility. These results thus emphasize the need to design actively the restaurant's acoustical atmosphere beyond pure loudness reduction which involves a specific trade-off between comfort and liveliness, depending on the desired character of the place.}, subject = {European Acoustics Association}, 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 = {Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023, September 11 - 15, 2023,Torino, Italy}, booktitle = {Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023, September 11 - 15, 2023,Torino, Italy}, editor = {Astolfi, Arianna and Asdrubali, Francesco and Shtrepi, Louena}, publisher = {European Acoustics Association}, address = {Turin, Italy}, isbn = {978-88-88942-67-4}, issn = {2221-3767}, doi = {10.61782/fa.2023.0480}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-47929}, pages = {1647 -- 1654}, 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 RAQI 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.}, subject = {Raumakustik}, language = {en} } @article{NehrJaeckel2023, author = {Nehr, Sascha and J{\"a}ckel, Simon}, title = {Successful Innovation Transfer through Pre-Standardization: A Case Study}, series = {Standards}, volume = {3}, journal = {Standards}, number = {1}, publisher = {MDPI}, issn = {2305-6703}, doi = {10.3390/standards3010004}, pages = {31 -- 42}, year = {2023}, abstract = {This study presents an approach to structure, analyze and evaluate corporate standardization processes using the example of pre-standardization for the reduction of environmental impacts in product design and development. For this purpose, we give a detailed description of the evolution of the European Standard EN 16524 entitled "Mechanical products—Methodology for reduction of environmental impacts in product design and development". The standardization strategy behind the evolution of EN 16524 is analyzed using the approach of a Business Model Canvas combined with an evaluation using pre-defined success factors. Moreover, we derive general recommendations for corporate standardization professionals in checklists for each field of the underlying Business Model Canvas. With regard to the case study depicted here, we come to the conclusion that pre-standards are especially suited for innovation transfer in the field of emerging and rapidly evolving scientific and technical results.}, language = {en} } @article{NehrDuarteAlmeidaetal.2023, author = {Nehr, Sascha and Duarte, Regina M. B. O. and Almeida, Antoine S. and Baus, Lukas and Bergmann, Karl-Christian}, title = {Assessing the relevance of allergenic pollen in indoor environments—current knowledge base and research needs}, series = {Allergo Journal International}, volume = {32}, journal = {Allergo Journal International}, number = {6}, publisher = {Springer Nature}, issn = {2197-0378}, doi = {10.1007/s40629-023-00251-y}, pages = {167 -- 175}, year = {2023}, abstract = {SummaryAirborne pollen allergens—a relevant component of bioaerosols and, therefore, of airborne particulate matter—are considered an important metric in air quality assessments. Although the measurement of airborne pollen allergen concentrations in outdoor environments (namely, in urban areas) has been recognized as a key environmental health indicator, no such obligation exists for indoor environments (dwellings or occupational settings). However, people spend most of their daily time (80-90\%) indoors, where the majority of their exposure to air pollution, including pollen allergens, occurs. Nonetheless, the relative importance of airborne pollen allergen exposure indoors differs from outdoors because of differences in pollen loads, sources, dispersion, and degree of penetration from the outdoor surroundings, as well as the differences in the allergenic pollen profiles. In this brief review, we mined the literature over the last 10 years to summarize what existing measurements reveal about the relevance of airborne allergenic pollen in indoor environments. The research priorities on this topic are presented, highlighting the challenges and the motivations for obtaining pollen data in built environments which are key to understand the extent and mechanisms of human exposure to airborne pollen allergens. Thus, we provide a comprehensive assessment of the relevance of airborne allergenic pollen in indoor environments, highlighting knowledge gaps and research needs related to their health effects.}, language = {en} } @article{SaffellNehr2023, author = {Saffell, John and Nehr, Sascha}, title = {Improving Indoor Air Quality through Standardization}, series = {Standards}, volume = {3}, journal = {Standards}, number = {3}, publisher = {MDPI}, issn = {2305-6703}, doi = {10.3390/standards3030019}, pages = {240 -- 267}, year = {2023}, abstract = {Human beings experience a large fraction of their exposure to air pollutants in indoor environments. Air pollution is a large environmental health risk, and exposure to ambient air pollution and indoor air pollution contribute equally to the total number of fatalities worldwide. Although legislative authorities have established limit values for ambient outdoor air and stack emissions, there are inconsistent and variable national and regional limit values for gaseous substances and airborne particulate matter in the built environment (schools, homes, healthcare facilities, offices, and other public spaces). This lack of regulation is unsurprising, because indoor spaces are characterized by complex air chemistry, and their construction materials and types of activities vary significantly. The current understanding of indoor pollutants, including short-lived oxidants, degradation of VOCs, particle formation, and particle composition, is incomplete. It is necessary to identify and assess emerging pollutants and their toxicity, and to consider new consumer products and green construction materials and their impact on indoor air quality (IAQ). Learning from IAQ surveys and audit protocols, research methodologies should be regularized for cross-research comparisons. Some indoor air quality guidance and standards have been written, and several more are in development, with the international ISO 16000 series of indoor standards leading the way for improving indoor air data quality. The WHO has established some ambient air limit values which can mostly be translated into indoor limit values. The built environment needs to harmonize energy efficiency, thermal comfort and air quality standards and guidance. In this review, we discuss the next steps for improving international, regional and national standards and guidance, leading to better and more complete indoor air quality regulations.}, language = {en} } @article{BausNehrMaeda2023, author = {Baus, Lukas and Nehr, Sascha and Maeda, Nobutaka}, title = {Investigation of CO2-Sorption Characteristics of Readily Available Solid Materials for Indoor Direct Air Capturing}, series = {Indoor Air}, volume = {2023}, journal = {Indoor Air}, editor = {Ming, Ting Zhen}, publisher = {Wiley}, issn = {1600-0668}, doi = {10.1155/2023/8821044}, pages = {1 -- 8}, year = {2023}, abstract = {Direct air capturing (DAC) is an energy demanding process for CO2-removal from air. Ongoing research focuses on the potential of indoor air as DAC-feed to profit from currently unused energetic synergies between DAC and the built environment. In this work, we investigated the performance of three different readily available, solid DAC-adsorbers under typical indoor environmental conditions of 16-25°C, 25-60\% relative humidity (RH), and CO2-concentrations of less than 800 ppm above atmospheric concentrations. The measured mass-specific CO2-adsorption capacities of K2CO3-impregnated activated carbon, polyethylenimine-snow (PEI-snow), and polyethylenimine (PEI) on silica a amount to 6.5 ± 0.3 mg g-1, 52.9 ± 4.9 mg g-1, and 56.9 ± 4.2 mg g-1, respectively. Among the three investigated adsorber materials, PEI on silica is the most promising candidate for DAC-applications as its synthesis is rather simple, the CO2-desorption is feasible at moderate conditions of about 80°C at 100 mbar, and the competing co-adsorption of water does not strongly affect the CO2-adsorption under the investigated experimental conditions.}, language = {en} } @incollection{Schroeder2023, author = {Schr{\"o}der, Joachim}, title = {Forced Accommodation for Jews in the Context of the Deportations at the D{\"u}sseldorf Abattoir (1939-1944)}, series = {Deportations in the Nazi Era. Sources and Research}, volume = {2}, booktitle = {Deportations in the Nazi Era. Sources and Research}, editor = {Borggr{\"a}fe, Henning and Jah, Akim}, publisher = {De Gruyter}, isbn = {9783110746464}, doi = {10.1515/9783110746464-014}, pages = {229 -- 248}, year = {2023}, abstract = {During the period 1941 to 1944, the former D{\"u}sseldorf abattoir served as an assembly camp for almost 6,000 Jewish men, women and children from the administrative district of D{\"u}sseldorf prior to their deportation. Their deportation was the end of a long process of disenfranchisement and social isolation, the penultimate stage of which was eviction from their own or rented housing and confinement in forced accommodation: a 'Judenhaus' ('Jews house', a tenement building where Jews were housed), communal accommodation or a camp. This paper investigates for the first time the background to and the process of 'residential segregation' in this region. It names the various actors of local municipal authorities and the NSDAP involved and uses examples to describe the situation faced by those who were persecuted.}, subject = {Segregation (Soziologie)}, language = {en} } @article{VanRiessenThissenKnopp2023, author = {Van Rießen, Anne and Thissen, Julia and Knopp, Reinhold}, title = {A note on the D{\"u}sseldorfer Model for counting homeless people in a German city}, series = {International Journal of Population Studies}, volume = {9}, journal = {International Journal of Population Studies}, number = {1}, publisher = {AccScience}, issn = {2424-8606}, doi = {10.36922/ijps.397}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-46647}, pages = {58 -- 68}, year = {2023}, abstract = {This article describes the D{\"u}sseldorfer Model which was developed for the city's homeless census in 2021. It allows focusing on the number as well as living situations of homeless people with the objective of analyzing their needs to derive concrete recommendations for action. A complete quantitative count of homeless people in the city on a key date was performed according to principles developed together with the actors of the homeless support system in D{\"u}sseldorf. Beyond that, qualitative interviews afforded insights into the living situation of homeless people from the user's perspective. Along with the research methodology, major results are briefly presented in the article, followed by an outlook with recommendations for action.}, subject = {Obdachlosigkeit}, language = {en} } @article{MaginStarkJanduraetal.2023, author = {Magin, Melanie and Stark, Birgit and Jandura, Olaf and Udris, Linards and Riedl, Andreas and Klein, Miriam and Eisenegger, Mark and K{\"o}sters, Raphael and Hofstetter Furrer, Brigitte}, title = {Seeing the Whole Picture. Towards a Multi-perspective Approach to News Content Diversity based on Liberal and Deliberative Models of Democracy}, series = {Journalism Studies}, volume = {24}, journal = {Journalism Studies}, number = {5}, publisher = {Taylor \& Francis}, issn = {1461-670X}, doi = {10.1080/1461670X.2023.2178248}, pages = {669 -- 696}, year = {2023}, abstract = {By providing diverse news content, news media are key for a well- functioning public sphere. However, agreement on how to measure news content diversity is lacking. Research often refers to democratic theory as normative reference point, but different models of democracy understand news content diversity differently. Our study makes a unique, innovative contribution to this field: (1) We develop a methodological framework for measuring news content diversity, that is a set of comprehensive measuring instruments that derive different operationalizations of topic and actor diversity each from liberal and deliberative democratic theories. (2) Considering that a good public discourse requires more than diversity, we analyze news content diversity in the context of four other journalistic standards: neutrality, rationality, discursivity, and civility. (3) We prove the applicability of our measuring instruments by means of a standardized content analysis of six German news media as a case study. The different quality profiles of these outlets our analysis reveals are explained by their different functions in the media system. Our study shows how important a multi-perspectival normative approach to news content diversity is, both empirically and theoretically. Future studies on news content diversity should make their normative foundations transparent and derive their indicators purposefully therefrom.}, subject = {Demokratie}, language = {en} } @article{deJongeLouwenChekmenevaetal.2023, author = {de Jonge, Niek F. and Louwen, Joris J. R. and Chekmeneva, Elena and Camuzeaux, Stephane and Vermeir, Femke J. and Jansen, Robert S. and Huber, Florian and van der Hooft, Justin J. J.}, title = {MS2Query: reliable and scalable MS2 mass spectra-based analogue search}, series = {Nature Communications}, volume = {14}, journal = {Nature Communications}, publisher = {Springer}, issn = {2041-1723}, doi = {10.1038/s41467-023-37446-4}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-46105}, pages = {12}, year = {2023}, abstract = {Metabolomics-driven discoveries of biological samples remain hampered by the grand challenge of metabolite annotation and identification. Only few metabolites have an annotated spectrum in spectral libraries; hence, searching only for exact library matches generally returns a few hits. An attractive alternative is searching for so-called analogues as a starting point for structural annotations; analogues are library molecules which are not exact matches but display a high chemical similarity. However, current analogue search implementations are not yet very reliable and relatively slow. Here, we present MS2Query, a machine learning-based tool that integrates mass spectral embedding-based chemical similarity predictors (Spec2Vec and MS2Deepscore) as well as detected precursor masses to rank potential analogues and exact matches. Benchmarking MS2Query on reference mass spectra and experimental case studies demonstrate improved reliability and scalability. Thereby, MS2Query offers exciting opportunities to further increase the annotation rate of metabolomics profiles of complex metabolite mixtures and to discover new biology.}, subject = {Metabolomik}, language = {en} } @article{VersuemerSteffensWeinzierl2023, author = {Vers{\"u}mer, Siegbert and Steffens, Jochen and Weinzierl, Stefan}, title = {Day-to-day loudness assessments of indoor soundscapes: Exploring the impact of loudness indicators, person, and situation}, series = {The Journal of the Acoustical Society of America}, volume = {153}, journal = {The Journal of the Acoustical Society of America}, number = {5}, publisher = {Acoustical Society of America (ASA)}, issn = {0001-4966}, doi = {10.1121/10.0019413}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-46127}, pages = {2956 -- 2972}, year = {2023}, abstract = {This study investigates loudness perception in real-world contexts using predictors related to the sound, situation, or person. In the study, 105 participants recorded 6594 sound environments in their homes, which were then evaluated based on the Experience Sampling Method. Hierarchical linear regressions using a loudness level based on ISO 532-1 allowed for obtaining the best model fits for predicting perceived loudness and explaining the highest variance. LAeq and LAF5 provided comparable results and may require less computational effort. However, the analysis shows that only one-third of the variance explained by fixed effects was attributable to the loudness level. Sixteen percent stemmed from perceived properties of the soundscape; 1\% were attributable to relatively temporally stable, person-related predictors like participants' age; non-auditory situational predictors made no additional contribution. The results thus did not confirm previous findings on loudness perception under laboratory conditions, emphasizing the importance of the situational context. Along with the current paper, a comprehensive dataset, including the assessed person-related, situational, and sound-related measures as well as LAeq time-series and third-octave spectrograms, is provided to enable further research on sound perception, indoor soundscapes, and emotion.}, subject = {Lautwahrnehmung}, language = {en} } @article{BiswasMandalBoseetal.2023, author = {Biswas, Nirmalendu and Mandal, Dipak Kumar and Bose, Sharmistha and Manna, Nirmal K. and Benim, Ali Cemal}, title = {Experimental Treatment of Solar Chimney Power Plant — A Comprehensive Review}, series = {Energies}, volume = {16}, journal = {Energies}, number = {17}, publisher = {MDPI}, issn = {1996-1073}, doi = {10.3390/en16176134}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-46139}, pages = {41}, year = {2023}, abstract = {Solar chimney power plants (SCPPs) are encouraging sustainable energy sources due to their low cost, abundance, low maintenance, and eco-friendliness. However, despite significant efforts to optimize SCPP design, their efficiency and power generation capabilities remain limited. Researchers have explored modifications in plant geometry and hybridization to improve efficiency. Despite extensive work in this area, commercialization of SCPPs has not yet been achieved. Most of the research is numerical and may differ from real-world practical use. The number of experimental studies is also relatively small. To facilitate commercialization, further investigation with practical and feasible dimensions is required. This comprehensive review paper aims to provide an in-depth analysis of experimental approaches and advancements in the field of SCPPs. The paper begins with an introduction, highlighting the background, significance, and objectives of the review. It provides an overview of the plants, discussing their principles and operation as innovative renewable energy systems. The historical development and evolution of solar chimneys are explored, shedding light on their progression over time. Case studies of operational hybrid SCPPs are examined to showcase real-world applications and performance. The paper also addresses environmental impacts and sustainability considerations associated with SCPPs. Furthermore, recommendations for future research and development in this field are provided to guide researchers and industry professionals. This study focuses on the possibility of commercialization of both standalone and hybrid SCPPs.}, subject = {Erneuerbare Energien}, language = {en} } @article{SteinKursaweKoehler2023, author = {Stein, Nora and Kursawe, Janet and K{\"o}hler, Denis}, title = {Contesting State-Led Patriarchy—The Drivers, Demands and Dynamics of Women's Participation in the Gezi Uprisings in Turkey 2013}, series = {Societies}, volume = {13}, journal = {Societies}, number = {12}, publisher = {MDPI}, issn = {2075-4698}, doi = {10.3390/soc13120258}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-46020}, year = {2023}, abstract = {The Gezi Park protests in Istanbul (T{\"u}rkiye) gained worldwide attention in 2013. Both men and women took part in the protests, which were heavily cracked down on by the government. The present study examined 273 Turkish women's attitudes and motivations for taking part in the protests. The results show that the following variables had a significant impact on protest participation: lifestyle threats posed by religious values/norms and by the government; feelings of marginalization as a woman; political dissatisfaction; gender discrimination; and affiliations with feminism. Regarding the impact of attitudes on women's political participation and discrimination, this study provides insights into the state of research on gender discrimination and feministic identity.}, subject = {Gezi-Proteste}, language = {en} } @misc{Thielen2023, type = {Master Thesis}, author = {Thielen, Sven}, title = {Investigating JackTrip's Software Architecture: A Case Study On Prominent Reasons For Architectural Erosion In Open Source Software Originating From Academia}, publisher = {Hochschule D{\"u}sseldorf}, address = {D{\"u}sseldorf}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-44153}, school = {Hochschule D{\"u}sseldorf}, pages = {161}, year = {2023}, abstract = {Sustainable software architecture is crucial for the success of an evolving system that is affected by its context and environment. However, deviations between software design and implementation are often uncontrolled and induce architectural erosion. The literature describes several symptoms and observes this phenomenon in open source software. Prominent reasons for the occurrence of architectural erosion include a rushed evolution, recurring changes, a lack of developers' awareness, time pressures, and the accumulation of design decisions. Architectural erosion is also prevalent in academic projects, but it still needs to be researched in-depth in a real-life setting. In this work, a single case study investigates the symptoms and reasons for architectural erosion in open source software originating from academia by employing a mixed-methods approach. Architectural metrics from a static code analysis using ARCADE Core are contrasted with developers' perspectives sourced from semistructured interviews. The investigated project is JackTrip, a cross-platform application for realtime networked music performances and Internet reverberation research. The first research question aims at assessing the trend of structural symptoms for architectural erosion in JackTrip. The results show a significant increase in link overload smells in the course of the evolution, which reached 11 as of version 1.6.2. This supports the developers' perception of a rushed evolution corresponding to the second research question, which asks to what extent prominent causes for architectural erosion apply. Additionally, the interview data evince time constraints related to tight research funding and the commercialization of the project. Research question 3 investigates how the academic environment and the problem domain relate to the symptoms and reasons for architecture erosion. It has been found that these influences shape the development approach and impact contributor selection. In relation to a certain inexperience and lack of commitment of open source developers as a reason for architectural erosion, the results suggest further studies and opt for ending the discussion regarding skills. Currently, the role of an architect or dedicated architectural work does not seem to be present in the JackTrip project. However, structural issues described in this work should not be considered as categorical statements about its software architecture as they would need to be confirmed on a code level.}, 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{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}, volume = {60}, journal = {Metrologia}, number = {064001}, publisher = {IOP Publishing}, issn = {1681-7575}, doi = {10.1088/1681-7575/acf1a4}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-41484}, 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} } @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} } @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} } @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}, publisher = {arXiv}, 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{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} } @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{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{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} }