@inproceedings{HueningMund2023, author = {H{\"u}ning, Felix and Mund, Cindy}, title = {Integration of agile development in standard labs}, series = {51st Annual Conference of the European Society for Engineering Education (SEFI)}, booktitle = {51st Annual Conference of the European Society for Engineering Education (SEFI)}, doi = {10.21427/NK4Z-WS73}, pages = {11 Seiten}, year = {2023}, abstract = {In addition to the technical content, modern courses at university should also teach professional skills to enhance the competencies of students towards their future work. The competency driven approach including technical as well as professional skills makes it necessary to find a suitable way for the integration into the corresponding module in a scalable and flexible manner. Agile development, for example, is essential for the development of modern systems and applications and makes use of dedicated professional skills of the team members, like structured group dynamics and communication, to enable the fast and reliable development. This paper presents an easy to integrate and flexible approach to integrate Scrum, an agile development method, into the lab of an existing module. Due to the different role models of Scrum the students have an individual learning success, gain valuable insight into modern system development and strengthen their communication and organization skills. The approach is implemented and evaluated in the module Vehicle Systems, but it can be transferred easily to other technical courses as well. The evaluation of the implementation considers feedback of all stakeholders, students, supervisor and lecturers, and monitors the observations during project lifetime.}, language = {en} } @article{ThiebesKleinZingsheimetal.2022, author = {Thiebes, Anja Lena and Klein, Sarah and Zingsheim, Jonas and M{\"o}ller, Georg H. and G{\"u}rzing, Stefanie and Reddemann, Manuel A. and Behbahani, Mehdi and Cornelissen, Christian G.}, title = {Effervescent atomizer as novel cell spray technology to decrease the gas-to-liquid ratio}, series = {pharmaceutics}, volume = {14}, journal = {pharmaceutics}, number = {11}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/pharmaceutics14112421}, pages = {Artikel 2421}, year = {2022}, abstract = {Cell spraying has become a feasible application method for cell therapy and tissue engineering approaches. Different devices have been used with varying success. Often, twin-fluid atomizers are used, which require a high gas velocity for optimal aerosolization characteristics. To decrease the amount and velocity of required air, a custom-made atomizer was designed based on the effervescent principle. Different designs were evaluated regarding spray characteristics and their influence on human adipose-derived mesenchymal stromal cells. The arithmetic mean diameters of the droplets were 15.4-33.5 µm with decreasing diameters for increasing gas-to-liquid ratios. The survival rate was >90\% of the control for the lowest gas-to-liquid ratio. For higher ratios, cell survival decreased to approximately 50\%. Further experiments were performed with the design, which had shown the highest survival rates. After seven days, no significant differences in metabolic activity were observed. The apoptosis rates were not influenced by aerosolization, while high gas-to-liquid ratios caused increased necrosis levels. Tri-lineage differentiation potential into adipocytes, chondrocytes, and osteoblasts was not negatively influenced by aerosolization. Thus, the effervescent aerosolization principle was proven suitable for cell applications requiring reduced amounts of supplied air. This is the first time an effervescent atomizer was used for cell processing.}, language = {en} } @article{Timme2023, author = {Timme, Michael}, title = {Bauliche Ver{\"a}nderungen durch Wohnungseigent{\"u}mer und die Zustimmung der Gemeinschaft : Zugleich eine Besprechung des BGH, Urt. v. 17.3.2023 - V ZR 140/22, MDR 2023, 619}, series = {Monatsschrift f{\"u}r Deutsches Recht}, volume = {77}, journal = {Monatsschrift f{\"u}r Deutsches Recht}, number = {13}, publisher = {Verlag Dr. Otto Schmidt}, address = {K{\"o}ln}, issn = {2194-4202 (online)}, pages = {815 -- 818}, year = {2023}, abstract = {Durch das WEMoG (Gesetz v. 16.10.2020, BGBl. I 2187) hat der Gesetzgeber die Regelung des \S 20 WEG eingef{\"u}hrt. Demnach ist auch f{\"u}r bauliche Ver{\"a}nderungen an R{\"a}umen und Fl{\"a}chen, die einem Sondernutzungsrecht unterliegen, die Zustimmung der Gemeinschaft notwendig. Der BGH hat nun mit Urt. v. 17.3.2023 -V ZR 140/22, MDR 2023, 619 deutlich gemacht, dass bei Fehlen eines entsprechenden Beschlusses, die bauliche Ver{\"a}nderung durch einen einzelnen Wohnungseigent{\"u}mer nicht vorgenommen werden darf, sondern eine rechtswidrige Eigentumsbeeintr{\"a}chtigung darstellt. Der folgende Beitrag nimmt die Entscheidung zum Anlass, um die neue Rechtslage durch \S 20 WEG eingehend zu erl{\"a}utern. Gleichzeitig werden die Folgen der aktuellen Entscheidung n{\"a}her dargestellt.}, language = {de} } @article{BaaderBoxbergChenetal.2023, author = {Baader, Fabian and Boxberg, Marc S. and Chen, Qian and F{\"o}rstner, Roger and Kowalski, Julia and Dachwald, Bernd}, title = {Field-test performance of an ice-melting probe in a terrestrial analogue environment}, series = {Icarus}, journal = {Icarus}, number = {409}, publisher = {Elsevier}, address = {Amsterdam}, doi = {10.1016/j.icarus.2023.115852}, pages = {Artikel 115852}, year = {2023}, abstract = {Melting probes are a proven tool for the exploration of thick ice layers and clean sampling of subglacial water on Earth. Their compact size and ease of operation also make them a key technology for the future exploration of icy moons in our Solar System, most prominently Europa and Enceladus. For both mission planning and hardware engineering, metrics such as efficiency and expected performance in terms of achievable speed, power requirements, and necessary heating power have to be known. Theoretical studies aim at describing thermal losses on the one hand, while laboratory experiments and field tests allow an empirical investigation of the true performance on the other hand. To investigate the practical value of a performance model for the operational performance in extraterrestrial environments, we first contrast measured data from terrestrial field tests on temperate and polythermal glaciers with results from basic heat loss models and a melt trajectory model. For this purpose, we propose conventions for the determination of two different efficiencies that can be applied to both measured data and models. One definition of efficiency is related to the melting head only, while the other definition considers the melting probe as a whole. We also present methods to combine several sources of heat loss for probes with a circular cross-section, and to translate the geometry of probes with a non-circular cross-section to analyse them in the same way. The models were selected in a way that minimizes the need to make assumptions about unknown parameters of the probe or the ice environment. The results indicate that currently used models do not yet reliably reproduce the performance of a probe under realistic conditions. Melting velocities and efficiencies are constantly overestimated by 15 to 50 \% in the models, but qualitatively agree with the field test data. Hence, losses are observed, that are not yet covered and quantified by the available loss models. We find that the deviation increases with decreasing ice temperature. We suspect that this mismatch is mainly due to the too restrictive idealization of the probe model and the fact that the probe was not operated in an efficiency-optimized manner during the field tests. With respect to space mission engineering, we find that performance and efficiency models must be used with caution in unknown ice environments, as various ice parameters have a significant effect on the melting process. Some of these are difficult to estimate from afar.}, language = {en} } @misc{FeldmannFranckeEspeetal.2022, author = {Feldmann, Marco and Francke, Gero and Espe, Clemes and Chen, Qian and Baader, Fabian and Boxberg, Marc S. and Sustrate, Anna-Marie and Kowalski, Julia and Dachwald, Bernd}, title = {Performance data of an ice-melting probe from field tests in two different ice environments}, doi = {10.5281/zenodo.6094866}, year = {2022}, abstract = {This dataset was acquired at field tests of the steerable ice-melting probe "EnEx-IceMole" (Dachwald et al., 2014). A field test in summer 2014 was used to test the melting probe's system, before the probe was shipped to Antarctica, where, in international cooperation with the MIDGE project, the objective of a sampling mission in the southern hemisphere summer 2014/2015 was to return a clean englacial sample from the subglacial brine reservoir supplying the Blood Falls at Taylor Glacier (Badgeley et al., 2017, German et al., 2021). The standardized log-files generated by the IceMole during melting operation include more than 100 operational parameters, housekeeping information, and error states, which are reported to the base station in intervals of 4 s. Occasional packet loss in data transmission resulted in a sparse number of increased sampling intervals, which where compensated for by linear interpolation during post processing. The presented dataset is based on a subset of this data: The penetration distance is calculated based on the ice screw drive encoder signal, providing the rate of rotation, and the screw's thread pitch. The melting speed is calculated from the same data, assuming the rate of rotation to be constant over one sampling interval. The contact force is calculated from the longitudinal screw force, which es measured by strain gauges. The used heating power is calculated from binary states of all heating elements, which can only be either switched on or off. Temperatures are measured at each heating element and averaged for three zones (melting head, side-wall heaters and back-plate heaters).}, language = {en} } @article{LuftLuftArntz2023, author = {Luft, Angela and Luft, Nils and Arntz, Kristian}, title = {A basic description logic for service-oriented architecture in factory planning and operational control in the age of industry 4.0}, series = {Applied Sciences}, volume = {2023}, journal = {Applied Sciences}, number = {13}, publisher = {MDPI}, address = {Basel}, issn = {2076-3417}, doi = {10.3390/app13137610}, pages = {23 Seiten}, year = {2023}, abstract = {Manufacturing companies across multiple industries face an increasingly dynamic and unpredictable environment. This development can be seen on both the market and supply side. To respond to these challenges, manufacturing companies must implement smart manufacturing systems and become more flexible and agile. The flexibility in operational planning regarding the scheduling and sequencing of customer orders needs to be increased and new structures must be implemented in manufacturing systems' fundamental design as they constitute much of the operational flexibility available. To this end, smart and more flexible solutions for production planning and control (PPC) are developed. However, scheduling or sequencing is often only considered isolated in a predefined stable environment. Moreover, their orientation on the fundamental logic of the existing IT solutions and their applicability in a dynamic environment is limited. This paper presents a conceptual model for a task-based description logic that can be applied to factory planning, technology planning, and operational control. By using service-oriented architectures, the goal is to generate smart manufacturing systems. The logic is designed to allow for easy and automated maintenance. It is compatible with the existing resource and process allocation logic across operational and strategic factory and production planning.}, language = {en} } @article{AbbasHedwigBalcetal.2023, author = {Abbas, Karim and Hedwig, Lukas and Balc, Nicolae and Bremen, Sebastian}, title = {Advanced FFF of PEEK: Infill strategies and material characteristics for rapid tooling}, series = {Polymers}, volume = {2023}, journal = {Polymers}, number = {15}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/polym15214293}, pages = {Artikel 4293}, year = {2023}, abstract = {Traditional vulcanization mold manufacturing is complex, costly, and under pressure due to shorter product lifecycles and diverse variations. Additive manufacturing using Fused Filament Fabrication and high-performance polymers like PEEK offer a promising future in this industry. This study assesses the compressive strength of various infill structures (honeycomb, grid, triangle, cubic, and gyroid) when considering two distinct build directions (Z, XY) to enhance PEEK's economic and resource efficiency in rapid tooling. A comparison with PETG samples shows the behavior of the infill strategies. Additionally, a proof of concept illustrates the application of a PEEK mold in vulcanization. A peak compressive strength of 135.6 MPa was attained in specimens that were 100\% solid and subjected to thermal post-treatment. This corresponds to a 20\% strength improvement in the Z direction. In terms of time and mechanical properties, the anisotropic grid and isotropic cubic infill have emerged for use in rapid tooling. Furthermore, the study highlights that reducing the layer thickness from 0.15 mm to 0.1 mm can result in a 15\% strength increase. The study unveils the successful utilization of a room-temperature FFF-printed PEEK mold in vulcanization injection molding. The parameters and infill strategies identified in this research enable the resource-efficient FFF printing of PEEK without compromising its strength properties. Using PEEK in rapid tooling allows a cost reduction of up to 70\% in tool production.}, language = {en} } @misc{Huening2023, author = {H{\"u}ning, Felix}, title = {Sensorvorrichtung zur Erfassung eines Magnetfelds sowie magnetbasiertes Sensorsystem zur Erfassung einer Bewegung eines beweglichen Objekts}, year = {2023}, abstract = {Eine Sensorvorrichtung (10;110;210;310;410) zur Erfassung eines Magnetfelds, mit einer Wiegand-Sensoreinheit (12;112;212) umfassend: • - mindestens zwei Wiegand-Dr{\"a}hte (20) und • - eine Spulenanordnung (22;122;222), die die mindestens zwei Wiegand-Dr{\"a}hte (20) radial umschließt und die • • • ein Sensorelement (26;126;226) und • • ein Triggerelement (28;128;228), durch das ein Triggermagnetfeld erzeugbar ist, bildet, ist bekannt. Um ein magnetbasiertes Sensorsystem (300;400) zur Erfassung einer Bewegung eines beweglichen Objekts (301;401) zu erm{\"o}glichen, das ohne externe Energieversorgung zuverl{\"a}ssig sowie energieeffizient arbeitet und kosteng{\"u}nstig hergestellt werden kann, ist bei der erfindungsgem{\"a}ßen Sensorvorrichtung (10;110;210;310;410) eine Wiegand-Triggereinheit (14;14a) vorhanden, umfassend: • - einen Wiegand-Draht (30) und • - eine Trigger-Sensorspule (32), die den Wiegand-Draht (30) radial umschließt, wobei ein erstes Ende der Trigger-Sensorspule (32) der Wiegand-Triggereinheit (14;14a) mit einem ersten Ende des Triggerelements (28;128;228) der Wiegand-Sensoreinheit (12;112;212) elektrisch verbunden ist und ein zweites Ende der Trigger-Sensorspule (32) der Wiegand-Triggereinheit (14;14a) mit einem zweiten Ende des Triggerelements (28;128;228) der Wiegand-Sensoreinheit (12;112;212) elektrisch verbunden ist. Auf diese Weise verst{\"a}rkt ein in der Trigger-Sensorspule (32) erzeugter Impuls das Gesamtmagnetfeld, das auf die Wiegand-Dr{\"a}hte (20) in der Sensoreinheit einwirkt, derart, dass die Triggefeldst{\"a}rke aller Wiegand-Dr{\"a}hte (20) {\"u}berschritten wird und diese im wesentlichen zeitgleich ausl{\"o}sen.}, language = {de} } @inproceedings{SteuerDankert2023, author = {Steuer-Dankert, Linda}, title = {A crazy little thing called sustainability}, series = {51st Annual Conference of the European Society for Engineering Education (SEFI)}, booktitle = {51st Annual Conference of the European Society for Engineering Education (SEFI)}, doi = {10.21427/9CQR-VC94}, pages = {11 Seiten}, year = {2023}, abstract = {Achieving the 17 Sustainable Development Goals (SDGs) set by the United Nations (UN) in 2015 requires global collaboration between different stakeholders. Industry, and in particular engineers who shape industrial developments, have a special role to play as they are confronted with the responsibility to holistically reflect sustainability in industrial processes. This means that, in addition to the technical specifications, engineers must also question the effects of their own actions on an ecological, economic and social level in order to ensure sustainable action and contribute to the achievement of the SDGs. However, this requires competencies that enable engineers to apply all three pillars of sustainability to their own field of activity and to understand the global impact of industrial processes. In this context, it is relevant to understand how industry already reflects sustainability and to identify competences needed for sustainable development.}, language = {en} } @incollection{Engelmann2023, author = {Engelmann, Ulrich M.}, title = {Moderationsexpertise - Onlinemoderation}, series = {IT-Servicemanagement}, booktitle = {IT-Servicemanagement}, editor = {Lindinger, Markus and Bartsch, Oliver}, publisher = {T{\"U}V-Verlag}, address = {K{\"o}ln}, isbn = {978-3-8249-1154-7}, pages = {Kapitel 05532}, year = {2023}, abstract = {Damit Sie auch in den immer h{\"a}ufiger werdenden Onlineveranstaltungen als Moderator gut bestehen, sollten Sie wissen, was bei der Onlinemoderation im Besonderen zu beachten ist. In diesem dritten Teil der Beitragsserie erfahren Sie, warum online anders als offline ist. Die technischen M{\"o}glichkeiten werden vorgestellt und auch wie diese zu nutzen sind. Schließlich erhalten Sie Tipps, die Sie beim Sprechen online beachten sollten.}, language = {de} } @incollection{EngelmannBaumann2023, author = {Engelmann, Ulrich M. and Baumann, Martin}, title = {Moderationsexpertise f{\"u}r QMBs - Onlinemoderation}, series = {Qualit{\"a}tsmanagement im Gesundheitswesen}, booktitle = {Qualit{\"a}tsmanagement im Gesundheitswesen}, editor = {Herbig, Nicola and Poppelreuter, Stefan}, publisher = {T{\"U}V-Verlag}, address = {K{\"o}ln}, isbn = {978-3-8249-0714-4}, pages = {Kapitel 10816}, year = {2023}, abstract = {Damit Sie auch in den immer h{\"a}ufiger werdenden Onlineveranstaltungen als Moderator gut bestehen, sollten Sie wissen, was bei der Onlinemoderation im Besonderen zu beachten ist. In diesem dritten Teil der Beitragsserie erfahren Sie, warum online anders als offline ist. Die technischen M{\"o}glichkeiten werden vorgestellt und auch wie diese zu nutzen sind. Schließlich erhalten Sie Tipps, die Sie beim Sprechen online beachten sollten.}, language = {de} } @book{Lauth2023, author = {Lauth, Jakob}, title = {Physical chemistry in a nutshell: Basics for engineers and scientists}, publisher = {Springer}, address = {Berlin}, isbn = {978-3-662-67636-3 (Softcover)}, doi = {10.1007/978-3-662-67637-0}, pages = {XIII, 248 Seiten}, year = {2023}, abstract = {This book is based on a multimedia course for biological and chemical engineers, which is designed to trigger students' curiosity and initiative. A solid basic knowledge of thermodynamics and kinetics is necessary for understanding many technical, chemical, and biological processes. The one-semester basic lecture course was divided into 12 workshops (chapters). Each chapter covers a practically relevant area of physical chemistry and contains the following didactic elements that make this book particularly exciting and understandable: - Links to Videos at the start of each chapter as preparation for the workshop - Key terms (in bold) for further research of your own - Comprehension questions and calculation exercises with solutions as learning checks - Key illustrations as simple, easy-to-replicate blackboard pictures Humorous cartoons for each workshop (by Faelis) additionally lighten up the text and facilitate the learning process as a mnemonic. To round out the book, the appendix includes a summary of the most popular experiments in basic physical chemistry courses, as well as suggestions for designing workshops with exhibits, experiments, and "questions of the day." Suitable for students minoring in chemistry; chemistry majors are sure to find this slimmed-down, didactically valuable book helpful as well. The book is excellent for self-study.}, language = {en} } @inproceedings{NierlePieper2023, author = {Nierle, Elisabeth and Pieper, Martin}, title = {Measuring social impacts in engineering education to improve sustainability skills}, series = {European Society for Engineering Education (SEFI)}, booktitle = {European Society for Engineering Education (SEFI)}, doi = {10.21427/QPR4-0T22}, pages = {9 Seiten}, year = {2023}, abstract = {In times of social climate protection movements, such as Fridays for Future, the priorities of society, industry and higher education are currently changing. The consideration of sustainability challenges is increasing. In the context of sustainable development, social skills are crucial to achieving the United Nations Sustainable Development Goals (SDGs). In particular, the impact that educational activities have on people, communities and society is therefore coming to the fore. Research has shown that people with high levels of social competence are better able to manage stressful situations, maintain positive relationships and communicate effectively. They are also associated with better academic performance and career success. However, especially in engineering programs, the social pillar is underrepresented compared to the environmental and economic pillars. In response to these changes, higher education institutions should be more aware of their social impact - from individual forms of teaching to entire modules and degree programs. To specifically determine the potential for improvement and derive resulting change for further development, we present an initial framework for social impact measurement by transferring already established approaches from the business sector to the education sector. To demonstrate the applicability, we measure the key competencies taught in undergraduate engineering programs in Germany. The aim is to prepare the students for success in the modern world of work and their future contribution to sustainable development. Additionally, the university can include the results in its sustainability report. Our method can be applied to different teaching methods and enables their comparison.}, language = {en} } @incollection{Kurz2023, author = {Kurz, Melanie}, title = {Waffen und milit{\"a}rische Ausr{\"u}stung in Systemspielzeugwelten}, series = {Design f{\"u}r Spiel, Spaß, Spannung: Gestaltung von Artefakten zum spielerischen Handeln / herausgegeben von Melanie Kurz und Thilo Schwer}, booktitle = {Design f{\"u}r Spiel, Spaß, Spannung: Gestaltung von Artefakten zum spielerischen Handeln / herausgegeben von Melanie Kurz und Thilo Schwer}, publisher = {avedition}, address = {Stuttgart}, isbn = {978-3-89986-396-3}, pages = {104 -- 121}, year = {2023}, language = {de} } @article{HerssensCowburnAlbrachtetal.2022, author = {Herssens, Nolan and Cowburn, James and Albracht, Kirsten and Braunstein, Bjoern and Cazzola, Dario and Colyer, Steffi and Minetti, Alberto E. and Pavei, Gaspare and Rittweger, J{\"o}rn and Weber, Tobias and Green, David A.}, title = {Movement in low gravity environments (MoLo) programme - the MoLo-L.O.O.P. study protocol}, series = {PLOS ONE / Public Library of Science}, volume = {17}, journal = {PLOS ONE / Public Library of Science}, number = {11}, editor = {Cattaneo, Luigi}, publisher = {Plos}, address = {San Francisco}, issn = {1932-6203}, doi = {10.1371/journal.pone.0278051}, pages = {e0278051}, year = {2022}, abstract = {Exposure to prolonged periods in microgravity is associated with deconditioning of the musculoskeletal system due to chronic changes in mechanical stimulation. Given astronauts will operate on the Lunar surface for extended periods of time, it is critical to quantify both external (e.g., ground reaction forces) and internal (e.g., joint reaction forces) loads of relevant movements performed during Lunar missions. Such knowledge is key to predict musculoskeletal deconditioning and determine appropriate exercise countermeasures associated with extended exposure to hypogravity.}, language = {en} } @masterthesis{Schmitz2023, type = {Bachelor Thesis}, author = {Schmitz, Marvin}, title = {Eishockey Uni-Cup der RWTH Aachen : Produktion einer Sport{\"u}bertragung}, publisher = {FH Aachen}, address = {Aachen}, pages = {43 Seiten}, year = {2023}, abstract = {Der Uni-Cup ist ein Amateur Eishockey Turnier der RWTH Aachen. Es treten Studierende und Professor:innen gegeneinander an. Ausgetragen wurde das Turnier vor etwa 2.500 Zuschauern in der 100,5 Arena am Tivoli. Um das Event einer breiteren Masse zug{\"a}nglich zu machen, wurde dort im Rahmen der Bachelorarbeit erstmals eine Live {\"U}bertragung produziert. Das Ziel dabei war es, eine m{\"o}glichst professionelle und unterhaltsame Show zu kreieren.}, language = {de} } @masterthesis{Thiele2023, type = {Bachelor Thesis}, author = {Thiele, Jana}, title = {D{\"u}sseldorfer Schauspielhaus : „Entwicklung eines neuen Erscheinungsbildes"}, publisher = {FH Aachen}, address = {Aachen}, pages = {91 Seiten}, year = {2023}, abstract = {In der heutigen digitalisierten und individualisierten Welt spielt das Theater weiterhin eine bedeutende Rolle als kulturelle Institution und als Ort des k{\"u}nstlerischen Ausdrucks. Dabei ist einer der wichtigsten Aspekte die Bewegung. Sie findet auf der B{\"u}hne in jeglicher Form statt - Tanz, Gestik, Mimik, die Schritte der Schauspieler:innen, Spr{\"u}nge, Armbewegungen. All diese unterschiedlichen Arten von Bewegung sind ausschlaggebend f{\"u}r die Wirkung der Texte und St{\"u}cke. F{\"u}r das neue Erscheinungsbild des D{\"u}sseldorfer Schauspielhauses wurde dieser Bewegungsaspekt in ein spannendes, modernes und {\"u}bersichtliches Corporate Design {\"u}bersetzt. Das Ergebnis: Sonderzeichen, die „Bewegung" aufgreifen und entsprechend „verformt" wurden. Durch ihr ver{\"a}ndertes Aussehen spiegeln sie diese Bewegung abstrahiert wider und f{\"u}hren abwechslungsreich durch die verschiedenen Medien.}, language = {de} } @masterthesis{Thiem2023, type = {Bachelor Thesis}, author = {Thiem, Antonia}, title = {Entwicklung eines neuen Corporate Design f{\"u}r ein Museum mit dem Schwerpunkt Lichtkunst}, publisher = {FH Aachen}, address = {Aachen}, pages = {97 Seiten}, year = {2023}, abstract = {Weithin leuchtend - tief unter der Erde strahlend: Das »Zentrum f{\"u}r internationale Lichtkunst« in Unna ist ein »Unikat« unter den Kunstmuseen weltweit, da das Museum das Einzige ist, welches sich ausschließlich der zeitgen{\"o}ssischen Lichtkunst widmet. Seit 2001 erstreckt sich die Sammlung von 21 dauerhaften Werken in einem großz{\"u}gigen Kellergew{\"o}lbe. Viele der Lichtinstallationen wurden eigens f{\"u}r die R{\"a}umlichkeiten konzipiert und sind sowohl in ihrem technischen, als auch {\"a}sthetischen und perspektivischen Auftritt unverwechselbar. Die Zielsetzung des Projektes ist es, ein systematisches und einheitliches Erscheinungsbild, welches crossmedial eingesetzt werden kann, zu erarbeiten. Des Weiteren soll die Thematik Lichtkunst in dem Corporate Design aufgegriffen und widergespiegelt werden, sodass die Ber{\"u}hrungspunkte des Publikums spannungsvoll und einpr{\"a}gend aufgenommen werden.}, language = {de} } @masterthesis{Thoennissen2023, type = {Bachelor Thesis}, author = {Thoennißen, Amber Katharina}, title = {Boys will be boys}, publisher = {FH Aachen}, address = {Aachen}, pages = {236 Seiten}, year = {2023}, abstract = {"boys will be boys" erkundet bestehende Meinungen zum Thema M{\"a}nnlichkeit und versucht Alternativen zu finden: Wege, die M{\"a}nnlichkeit gehen und Richtungen, in die sich M{\"a}nnlichkeit ver{\"a}ndern kann. Auf 236 Seiten wird das Thema von so vielen Seiten wie irgendwie m{\"o}glich beleuchtet. Es gibt sowohl sehr pers{\"o}nliche, subjektive Besch{\"a}ftigung mit dem Thema als auch eine objektive, wissenschaftliche Herangehensweise. Das Buch ist vor allem mit typografischen Elementen gestaltet worden, wobei in Inhalt und Typografie viel Wert auf Niedrigschwelligkeit gelegt wurde. Außen ist ein partieller Relieflack aufgetragen worden, innen hat das Buch bedrucktes Vorsatzpapier. Ziel des Projektes war es, M{\"a}nnlichkeit und die verschiedenen Meinungen dazu m{\"o}glichst verst{\"a}ndlich wiedergeben zu k{\"o}nnen, um so einen Dialog zum Thema anzuregen.}, language = {de} } @masterthesis{Stiphout2023, type = {Bachelor Thesis}, author = {Stiphout, Maret van}, title = {Entwicklung eines neuen Erscheinungsbildes f{\"u}r das Wallraf-Richartz-Museum und Fondation Carboud}, publisher = {FH Aachen}, address = {Aachen}, year = {2023}, abstract = {Das Wallraf-Richartz-Museum \& Fondation Corboud besitzt eine der wichtigsten europ{\"a}ischen Kunstsammlungen vom Mittelalter bis zum 19. Jahrhundert. Durch das Zusammenspiel von Forschung und Vermittlung der Kunst- und Epochengeschichte tr{\"a}gt das Museum maßgeblich zum Erhalt des kulturellen Erbes und dem Meinungsaustausch {\"u}ber die Vergangenheit, Gegenwart und die Zukunft bei. Im Fokus des neuen Erscheinungsbildes steht die an den kulturellen und historischen Kontext angepasste Szenografie des Museums. Die beeindruckend verzierten Bilderrahmen der gezeigten Kunstepochen werden abstrahiert und durch einen typografischen Rahmen neu interpretiert. Das entwickelte Headline-Prinzip wird durch eine sehr zur{\"u}ckhaltende Gestaltung erg{\"a}nzt, was der Thematik und den gezeigten Meisterwerken Raum zum Wirken verleiht.}, language = {de} } @masterthesis{Transfeld2023, type = {Bachelor Thesis}, author = {Transfeld, Janine}, title = {Ein Kl-gest{\"u}tztes Software-Tool : zur Unterst{\"u}tzung der Projektgestaltung der BMW AG}, publisher = {FH Aachen}, address = {Aachen}, pages = {85 Seiten}, year = {2023}, abstract = {Die Bachelorarbeit besch{\"a}ftigte sich mit der Integration von k{\"u}nstlicher Intelligenz (KI) in softwarebasierte L{\"o}sungen und hatte das Ziel, ein prototypisches L{\"o}sungsmodell zu entwickeln. Dabei wurde das User-Experience-Designverfahren angewendet, um eine neue innovative Arbeitsweise zu schaffen, die KI-gest{\"u}tzte Produktentwicklungsprozesse umfasst.}, language = {de} } @masterthesis{Vaut2023, type = {Bachelor Thesis}, author = {Vaut, Ina}, title = {Hippocampus}, publisher = {FH Aachen}, address = {Aachen}, pages = {119 Seiten}, year = {2023}, abstract = {Hippocampus - Eine Publikation {\"u}ber das Erscheinungsbild und Verhaltensweisen von Seepferdchen, ihre Lebensr{\"a}ume, Bedrohungen und die Schutzmaßnahmen. Seepferdchen geh{\"o}ren zu den wenigen Fischarten, die allgemein bekannt sind. In den meisten F{\"a}llen werden Seepferdchen einfach als »s{\"u}ß« beschrieben. Doch Seepferdchen haben weit mehr zu bieten als ihr m{\"a}rchenhaftes Aussehen. Diese Publikation setzt sich mit kuriosen Erkenntnissen, aktuellen Forschungsergebnissen und Mythen rund um Seepferdchen auseinander und dient als Einstieg in die Thematik.}, language = {de} } @incollection{HeimesKampkerDornetal.2023, author = {Heimes, Heiner Hans and Kampker, Achim and Dorn, Benjamin and Kehrer, Mario and D{\"u}nnwald, Simon and Badura, Dennis and Terren, Maximilian and R{\"o}th, Thilo}, title = {Produktionsprozesse der Fahrzeugstruktur}, series = {Elektromobilit{\"a}t: Grundlagen einer Fortschrittstechnologie}, booktitle = {Elektromobilit{\"a}t: Grundlagen einer Fortschrittstechnologie}, editor = {Kampker, Achim and Heimes, Heiner Hans}, publisher = {Springer Vieweg}, address = {Berlin}, isbn = {978-3-662-65811-6 (Print)}, doi = {10.1007/978-3-662-65812-3_13}, pages = {227 -- 247}, year = {2023}, language = {de} } @incollection{HeimesKampkerKehreretal.2023, author = {Heimes, Heiner Hans and Kampker, Achim and Kehrer, Mario and D{\"u}nnwald, Simon and Heetfeld, Lennart and Polzenberg, Jens and Budde, Lucas and Keusen, Maximilian and Pandey, Rahul and R{\"o}th, Thilo}, title = {Fahrzeugstruktur}, series = {Elektromobilit{\"a}t: Grundlagen einer Fortschrittstechnologie}, booktitle = {Elektromobilit{\"a}t: Grundlagen einer Fortschrittstechnologie}, editor = {Kampker, Achim and Heimes, Heiner Hans}, publisher = {Springer Vieweg}, address = {Berlin}, isbn = {978-3-662-65811-6 (Print)}, doi = {10.1007/978-3-662-65812-3_5}, pages = {69 -- 106}, year = {2023}, abstract = {Um sowohl Treibhausgas-Emissionen zu verringern als auch Kraftstoffressourcen zu schonen, wird zunehmend an einer Transformation konventionell angetriebener Kraftfahrzeuge hin zu elektrifizierten Antriebskonzepten gearbeitet. Basierend auf herk{\"o}mmlichen Fahrzeugen mit Verbrennungsmotor wurde eine Vielzahl neuer Antriebssysteme mit verschiedenem Elektrifizierungsgrad entwickelt. Mitte der 1990er-Jahre kamen erste Fahrzeuge mit einem Hybridantrieb auf den Markt. Die Kombination aus Verbrennungs- und Elektromotor erlaubt eine Verbrauchsreduktion und Bremsenergier{\"u}ckgewinnung sowie lokal emissionsfreies Fahren.}, language = {de} } @article{KowalewskiBragardHueningetal.2023, author = {Kowalewski, Paul and Bragard, Michael and H{\"u}ning, Felix and De Doncker, Rik W.}, title = {An inexpensive Wiegand-sensor-based rotary encoder without rotating magnets for use in electrical drives}, series = {IEEE Transactions on Instrumentation and Measurement}, volume = {72}, journal = {IEEE Transactions on Instrumentation and Measurement}, publisher = {IEEE}, address = {New York}, issn = {0018-9456 (Print)}, doi = {10.1109/TIM.2023.3326166}, pages = {10 Seiten}, year = {2023}, abstract = {This paper introduces an inexpensive Wiegand-sensor-based rotary encoder that avoids rotating magnets and is suitable for electrical-drive applications. So far, Wiegand-sensor-based encoders usually include a magnetic pole wheel with rotating permanent magnets. These encoders combine the disadvantages of an increased magnet demand and a limited maximal speed due to the centripetal force acting on the rotating magnets. The proposed approach reduces the total demand of permanent magnets drastically. Moreover, the rotating part is manufacturable from a single piece of steel, which makes it very robust and cheap. This work presents the theoretical operating principle of the proposed approach and validates its benefits on a hardware prototype. The presented proof-of-concept prototype achieves a mechanical resolution of 4.5 ° by using only 4 permanent magnets, 2Wiegand sensors and a rotating steel gear wheel with 20 teeth.}, language = {en} } @incollection{GrossMuellerHertingetal.1997, author = {Groß, Rolf Fritz and M{\"u}ller, D. and Herting, D. and Schneemann, A. and Renz, Ulrich}, title = {Modulare Messdatenerfassung in Forschung und Lehre}, series = {Virtuelle Instrumente in der Praxis : Begleitband zum Kongress VIP '97}, booktitle = {Virtuelle Instrumente in der Praxis : Begleitband zum Kongress VIP '97}, editor = {Rahman, Jamal and Jaschinski, Hans}, publisher = {H{\"u}thig}, address = {Heidelberg}, isbn = {978-3-7785-2667-5 Pp.}, pages = {282 -- 288}, year = {1997}, abstract = {The Lehrstuhl f{\"u}r W{\"a}rme{\"u}bertragung und Klimatechnik at the Aachen University of Technology operates several test facilities to investigate fundamentals of heat and mass transfer supported by the Deutsche Forschungsgemeinschaft, the Minister f{\"u}r Forschung und Technologie and the industry. In order to get high-resolution and reproselection of hardware components is as critical as the design of software routines to perform successful and accurate measurements. In the following the development of the measurement and control system for three different test facilities is presented and discussed. Special attention is given to the education of students within the framework of laboratories and scientific experiments.}, language = {de} } @incollection{DautzenbergGrossRenz1996, author = {Dautzenberg, H. and Groß, Rolf Fritz and Renz, Ulrich}, title = {Meßtechnik auf dem Pr{\"u}fstand: Forschung zur Heißgasfiltration}, series = {Virtuelle Instrumente in der Praxis. Begleitband zum Kongress VIP 1996}, booktitle = {Virtuelle Instrumente in der Praxis. Begleitband zum Kongress VIP 1996}, editor = {Jamal, Rahman}, publisher = {National Instruments Germany}, address = {M{\"u}nchen}, pages = {202 -- 208}, year = {1996}, abstract = {Im Rahmen von Forschungsvorhaben des BMBF und verschiedener Industriepartner betreibt der Lehrstuhl f{\"u}r W{\"a}rme{\"u}bertragung und Klimatechnik der RWTH Aachen Pilotanlagen und Pr{\"u}fst{\"a}nde f{\"u}r Untersuchungen auf dem Gebiet der Heißgasfiltration mit keramischen Filterelementen. Als wesentlicher Garant f{\"u}r den Erfolg der Forschungsarbeit muß die auf das jeweilige Projekt genau abgestimmte Meß- und Regelungstechnik angesehen werden. Hierbei z{\"a}hlt neben der Auswahl geeigneter Hardwarekomponenten auch die Softwareentwicklung unter einer leistungsstarken und zuverl{\"a}ssigen Programmierumgebung. Anhand des Aufbaus dreier Versuchsanlagen im Technikumsmaßstab soll das Anforderungsprofil an die Meßtechnik bis hin zur Umsetzung innerhalb der Anlage skizziert werden. Der Heißgasfiltrationspr{\"u}fstand im Heizkraftwerk der RWTH Aachen dient der Beobachtung des Reinigungsverhaltens keramischer Filterelemente bei der Heißgasentstaubung im Temperaturbereich bis 850 Grad C. Wesentlich f{\"u}r die Meßwerterfassung ist hierbei die Kopplung eines Orion-Datenloggers der Firma Schlumberger mit LabView 4.0. Im Hochtemperaturofen des Lehrstuhls werden instation{\"a}re Druckmessungen an einer keramischen Filterkerze w{\"a}hrend eines Abreinigungsimpulses bei 950 Grad C mit hoher Samplingrate durchgef{\"u}hrt. Hierbei {\"u}bernimmt eine durch LabView 4.0 angesteuerte E-Series Karte der Firma National Instruments die Signalaufnahme. Die katalytische Schadstoffreduktion und Entstaubung heißer Rauchgase bei 900 Grad C sind Ziele der Untersuchungen in einer erstellten Versuchsanlage mit einem Quarzglasreaktor. Die Signalerfassung und -konditionierung erfolgt {\"u}ber SCXI in Verbindung mit LabView 4.0, die Steuerung der Anlage {\"u}bernehmen zwei Multifunktionskarten (National Instruments).}, language = {de} } @techreport{ChristGrossRenz1998, author = {Christ, Ansgar and Groß, Rolf Fritz and Renz, Ulrich}, title = {Str{\"o}mungs-, Filterkuchen- und Abreinigungsmodelle f{\"u}r Heißgasfilter, Teilvorhaben "Numerische Simulation des Abreinigungsvorganges und der Rohgasstr{\"o}mung"}, doi = {10.2314/GBV:50431601X}, pages = {117 Seiten}, year = {1998}, language = {de} } @book{KurzSchwer2023, author = {Kurz, Melanie and Schwer, Thilo}, title = {Design f{\"u}r Spiel, Spaß, Spannung: Gestaltung von Artefakten zum spielerischen Handeln / herausgegeben von Melanie Kurz und Thilo Schwer}, series = {Schriften / Gesellschaft f{\"u}r Designgeschichte}, journal = {Schriften / Gesellschaft f{\"u}r Designgeschichte}, edition = {1. Auflage}, publisher = {avedition}, address = {Stuttgart}, isbn = {978-3-89986-396-3}, pages = {171 Seiten}, year = {2023}, abstract = {Die kulturgeschichtlichen Stationen des Spielens vom Beginn der Industrialisierung bis zur Jahrtausendwende werden sowohl aus dem Blickwinkel der Designgeschichte als auch aus dem der Game Studies betrachtet. Die Bandbreite der Themen reicht von der Bauhaus-Wurfpuppe bis zur Barbie, vom Japonismus bis zur Pixelgrafik, von der grafischen Raumillusion zu 3D-Umgebungen und Interaktionsgestaltung, vom Brettspiel bis zum Kriegsspielzeug, von den Utopien der beginnenden Neuzeit bis zu merkantilen Absichten digitaler Spielkonzepte.}, language = {de} } @book{JanserHavermannHoeveleretal.2023, author = {Janser, Frank and Havermann, Marc and Hoeveler, Bastian and Hertz, Cyril and Bergmann, Ole}, title = {Str{\"o}mungslehre und Aerodynamik : inkompressible Profile und Tragfl{\"u}gelaerodynamik, Band 2}, edition = {4. Auflage}, publisher = {Mainz}, address = {Aachen}, isbn = {978-3-8107-0261-6}, pages = {XIII, 211 Seiten}, year = {2023}, abstract = {Das vorliegende Buch dient als Grundlage f{\"u}r die Bachelor- und Master-Ausbildung von Studierenden im Fachgebiet Str{\"o}mungslehre und Aerodynamik. Im hier behandelten Teilbereich der inkompressiblen Profile und Tragfl{\"u}gelaerodynamik werden schwerpunktm{\"a}ßig die folgenden Themen besprochen: - Profilaerodynamik - Tragfl{\"u}gelaerodynamik - Flugzeugpolare - Methoden zur Flugbereichserweiterung - Schwebeschub und Schwebeleistung - Propellerblattaerodynamik - Numerische Methoden zur Tragfl{\"u}gelberechnung}, language = {de} } @incollection{FreyerKempt2023, author = {Freyer, Nils and Kempt, Hendrik}, title = {AI-DSS in healthcare and their power over health-insecure collectives}, series = {Justice in global health}, booktitle = {Justice in global health}, editor = {Bhakuni, Himani and Miotto, Lucas}, publisher = {Routledge}, address = {London}, isbn = {9781003399933}, doi = {10.4324/9781003399933-4}, pages = {38 -- 55}, year = {2023}, abstract = {AI-based systems are nearing ubiquity not only in everyday low-stakes activities but also in medical procedures. To protect patients and physicians alike, explainability requirements have been proposed for the operation of AI-based decision support systems (AI-DSS), which adds hurdles to the productive use of AI in clinical contexts. This raises two questions: Who decides these requirements? And how should access to AI-DSS be provided to communities that reject these standards (particularly when such communities are expert-scarce)? This chapter investigates a dilemma that emerges from the implementation of global AI governance. While rejecting global AI governance limits the ability to help communities in need, global AI governance risks undermining and subjecting health-insecure communities to the force of the neo-colonial world order. For this, this chapter first surveys the current landscape of AI governance and introduces the approach of relational egalitarianism as key to (global health) justice. To discuss the two horns of the referred dilemma, the core power imbalances faced by health-insecure collectives (HICs) are examined. The chapter argues that only strong demands of a dual strategy towards health-secure collectives can both remedy the immediate needs of HICs and enable them to become healthcare independent.}, language = {en} } @techreport{ChristGrossRenz1998, author = {Christ, Ansgar and Groß, Rolf Fritz and Renz, Ulrich}, title = {HGR: Untersuchung zur Minimierung von gasf{\"o}rmigen Schadstoffen aus Rauchgasen bei der Heißgasfiltration}, doi = {10.2314/GBV:504318411}, pages = {141 Seiten}, year = {1998}, abstract = {Gas- und Dampfturbinen-Kraftwerke mit Druckwirbelschicht- oder mit Druckvergasungsverfahren erm{\"o}glichen die Verstromung von Kohle mit hohem Wirkungsgrad und niedrigen Emissionen. Eine Voraussetzung f{\"u}r den Betrieb dieser Anlagen ist die Entstaubung der Rauchgase bei hohen Temperaturen und Dr{\"u}cken. Abreinigungsfilter mit keramischen Elementen werden dazu eingesetzt. Eine Reduzierung gasf{\"o}rmiger Schadstoffe unter den gleichen Bedingungen k{\"o}nnte Rauchgasw{\"a}sche ersetzen. Ziel des Gesamtvorhabens ist es, die Integration von Heißgasfiltration und katalytischem Abbau der Schadstoffe Kohlenmonoxid, Kohlenwasserstoffe und Stickoxide in einen Verfahrensschritt zu untersuchen. Die Arbeitsschwerpunkte dieses Teilvorhabens betreffen: die katalytische Wirkung eisenhaltiger Braunkohlenaschen, die Wirksamkeit des Calciumaluminat als Katalysator des Abbaus unverbrannter Kohlenwasserstoffe im Heißgasfilter, numerische Simulation der kombinierten Abscheidung von Partikeln und gasf{\"o}rmigen Schadstoffen aus Rauchgasen}, language = {de} } @incollection{ThulfautGrossRenz2000, author = {Thulfaut, Christian and Groß, Rolf Fritz and Renz, Ulrich}, title = {Messwerterfassung und -auswertung mit LabView: Experimentelle Analyse der Mischungsg{\"u}te in Hybridzellenk{\"u}hlt{\"u}rmen}, series = {Virtuelle Instrumente in der Praxis. Begleitband zum Kongress VIP 2000}, booktitle = {Virtuelle Instrumente in der Praxis. Begleitband zum Kongress VIP 2000}, editor = {Jamal, Rahman and Jaschinski, Hans}, publisher = {H{\"u}thig}, address = {Heidelberg}, isbn = {3-7785-2789-4 (print)}, pages = {54 -- 60}, year = {2000}, abstract = {Zur K{\"u}hlung von Abw{\"a}rmestr{\"o}men aus Kraftwerksprozessen werden in zunehmenden Maße Hybridzellenk{\"u}hlt{\"u}rme mit Zwangskonvektion eingesetzt, deren wesentlicher Vorteil ihre geringe Bauh{\"o}he ist. Um bei derartigen K{\"u}hlt{\"u}rmen eine Sichtbehinderung oder Glatteisgef{\"a}hrdung durch bodennahen Nebel zu vermeiden, muss durch eine optimale Vermischung des Trocken- und Naßluftanteils gew{\"a}hrleistet sein, daß aus der K{\"u}hlturmkrone keine Nebelschwaden austreten. In Zusammenarbeit mit der Industrie betreibt der Lehrstuhl f{\"u}r W{\"a}rme{\"u}bertragung und Klimatechnik der RWTH Aachen einen Versuchsstand zur Erfassung der Mischungsg{\"u}te in Hybridzellenk{\"u}hlt{\"u}rmen. In maßstabsgerechter Nachbildung k{\"o}nnen dabei am Modell alle relevanten Einflußgr{\"o}ßen wie K{\"u}hlturmgeometrie, Gestaltung zus{\"a}tzlicher Mischeinbauten sowie die Betriebsparameter variiert werden. Mit Hilfe einer unter LabView 5.01 erstellten Software werden sowohl die l3etriebszust{\"u}ncle online {\"u}berwacht, als auch die ben{\"o}tigten Meßwerte zur Bestimmung der Mischungsg{\"u}te erfaßt. {\"U}ber die grafische Oberfl{\"a}che k{\"o}nnen s{\"a}mtliche Meßoptionen gesteuert sowie alle Meßdaten visualisiert und kontrolliert werden. In das LabView-Programm sind dar{\"u}ber hinaus Routinen zur Auswertung der Daten implementiert worden, die sowohl eine direkte Darstellung der Ergebnisse in Form von Diagrammen erm{\"o}glichen, als auch zur Weiterverarbeitung einen Datenexport in eine Microsoft- Excel-Tabelle vorsehen.}, language = {de} } @inproceedings{TischbeinKeanVertgewalletal.2023, author = {Tischbein, Franziska and Kean, Kilian and Vertgewall, Chris Martin and Ulbig, Andreas and Altherr, Lena}, title = {Determination of the topology of low-voltage distribution grids using cluster methods}, series = {27th International Conference on Electricity Distribution (CIRED 2023)}, booktitle = {27th International Conference on Electricity Distribution (CIRED 2023)}, publisher = {IEEE}, isbn = {978-1-83953-855-1}, doi = {10.1049/icp.2023.0478}, pages = {1 -- 5}, year = {2023}, abstract = {Due to the decarbonization of the energy sector, the electric distribution grids are undergoing a major transformation, which is expected to increase the load on the operating resources due to new electrical loads and distributed energy resources. Therefore, grid operators need to gradually move to active grid management in order to ensure safe and reliable grid operation. However, this requires knowledge of key grid variables, such as node voltages, which is why the mass integration of measurement technology (smart meters) is necessary. Another problem is the fact that a large part of the topology of the distribution grids is not sufficiently digitized and models are partly faulty, which means that active grid operation management today has to be carried out largely blindly. It is therefore part of current research to develop methods for determining unknown grid topologies based on measurement data. In this paper, different clustering algorithms are presented and their performance of topology detection of low voltage grids is compared. Furthermore, the influence of measurement uncertainties is investigated in the form of a sensitivity analysis.}, language = {en} } @inproceedings{EichenbaumNikolovskiMuelhensetal.2023, author = {Eichenbaum, Julian and Nikolovski, Gjorgji and M{\"u}lhens, Leon and Reke, Michael and Ferrein, Alexander and Scholl, Ingrid}, title = {Towards a lifelong mapping approach using Lanelet 2 for autonomous open-pit mine operations}, series = {2023 IEEE 19th International Conference on Automation Science and Engineering (CASE)}, booktitle = {2023 IEEE 19th International Conference on Automation Science and Engineering (CASE)}, publisher = {IEEE}, isbn = {979-8-3503-2069-5 (Online)}, doi = {10.1109/CASE56687.2023.10260526}, pages = {8 Seiten}, year = {2023}, abstract = {Autonomous agents require rich environment models for fulfilling their missions. High-definition maps are a well-established map format which allows for representing semantic information besides the usual geometric information of the environment. These are, for instance, road shapes, road markings, traffic signs or barriers. The geometric resolution of HD maps can be as precise as of centimetre level. In this paper, we report on our approach of using HD maps as a map representation for autonomous load-haul-dump vehicles in open-pit mining operations. As the mine undergoes constant change, we also need to constantly update the map. Therefore, we follow a lifelong mapping approach for updating the HD maps based on camera-based object detection and GPS data. We show our mapping algorithm based on the Lanelet 2 map format and show our integration with the navigation stack of the Robot Operating System. We present experimental results on our lifelong mapping approach from a real open-pit mine.}, language = {en} } @book{Heuermann2023, author = {Heuermann, Holger}, title = {Mikrowellentechnik : Feldsimulation, nichtlineare Schaltungstechnik, Komponenten und Subsysteme, Plasmatechnik, Antennen und Ausbreitung}, edition = {2. Auflage}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-41286-9}, doi = {10.1007/978-3-658-41287-6}, pages = {XVI, 394 Seiten}, year = {2023}, abstract = {Das Lehrbuch behandelt alle Aspekte, die den aktuellen Stand der GHz-Technik betreffen. Das Buch behandelt die verschiedenen numerischen Feldsimulationsverfahren. Mit vielen modernen Themen.}, language = {de} } @masterthesis{Namakiravesh2023, type = {Bachelor Thesis}, author = {Namakiravesh, Ehsan}, title = {Coup{\´e} Nr. 13}, publisher = {FH Aachen}, address = {Aachen}, pages = {25 Seiten}, year = {2023}, abstract = {Coup{\´e} Nr. 13 ist eine kurze Animation {\"u}ber ein Zugcoup{\´e} mit 6 individuellen Passagieren und den 5 Stufen der Kommunikationsentwicklung zwischen ihnen. Die Passagiere des "Coup{\´e} Nummer 13" werden zu ihrem wahren Ich, wenn sie sich gegenseitig die Kofferklappen {\"o}ffnen. Doch dieses Offen-Sein ist gar nicht so einfach. Es f{\"u}hlt sich anfangs verletzlich an, psychologisch nackt und meist {\"a}ngstlich. Aber diese Verletzlichkeit ist aus psychologischer Sicht der Schl{\"u}ssel zu engen Beziehungen. Wahre Verbundenheit entsteht nur, wenn man den Weg zur Schattenseite des anderen findet - indem man sie so sieht und annimmt, wie sie wirklich sind. In der Tat bewundern und respektieren wir meistens die Verletzlichkeit anderer Menschen. Wir sehen sie in der Regel als ein Zeichen von St{\"a}rke und Mut - nicht von Schw{\"a}che.}, language = {de} } @masterthesis{Scheffel2023, type = {Bachelor Thesis}, author = {Scheffel, Zeno Samuel}, title = {Identit{\"a}t, Zusammenhalt, Zugeh{\"o}rigkeit : Die Exploration der Gestaltung von Fußballtrikots}, publisher = {FH Aachen}, address = {Aachen}, pages = {95 Seiten}, year = {2023}, abstract = {Das Fußballtrikot - Arbeitsbekleidung, Identifikationsmerkmal, Distinktionsmerkmal? Was ist das Fußballtrikot, was sind seine identit{\"a}tsstiftenden Merkmale und welche Gestaltungsparameter pr{\"a}gen sein heutiges Aussehen? In dieser Publikation wird die Geschichte des Trikots ebenso wie die {\"a}ußeren Einfl{\"u}sse auf sein heutiges Erscheinungsbild dokumentiert und analysiert. Die Publikation definiert die verschiedenen Gestaltungsparameter, erl{\"a}utert diese und ordnet sie ein. Ebenso wird ein Einblick in den kreativen Gestaltungsprozess von Fußballtrikots gew{\"a}hrt. Das Ziel dieser Publikation besteht darin, das Erscheinungsbild von Trikots zu verstehen und eine kritische Reflexion dar{\"u}ber zu erm{\"o}glichen, wie das Fußballtrikot individuell definiert wird.}, language = {de} } @masterthesis{Schlepuetz2023, type = {Bachelor Thesis}, author = {Schlep{\"u}tz, Nico}, title = {News Flow : Nachrichten- und Informationsprozesse im digitalen Wandel}, publisher = {FH Aachen}, address = {Aachen}, pages = {89 Seiten}, year = {2023}, abstract = {"News Flow" Nachrichten- und Informationsprozesse im digitalen Wandel. In der digitalen Welt sind wir von Informationen aus unterschiedlichen Medien umgeben. Die st{\"a}ndige Verf{\"u}gbarkeit f{\"u}hrt zu {\"U}berforderung und Orientierungslosigkeit. Junge Menschen bevorzugen Streaming und Social Media gegen{\"u}ber traditionellen Nachrichten. Angesichts globaler Krisen und Desinformation sind innovative L{\"o}sungen wichtig, um den Informationsfluss zu verbessern. "News Flow" ist eine digitale Anwendung f{\"u}r Alternativen des Nachrichtenkonsums. Sie ber{\"u}cksichtigt individuelle Bed{\"u}rfnisse und nutzt moderne Technologien. Durch die visuelle Vermittlung wird das Interesse an Nachrichten gesteigert und junge Zielgruppen angesprochen. Diese Arbeit stellt sich den Herausforderungen des digitalen Wandels im Nachrichtenbereich und er{\"o}ffnet eine neue Perspektive auf den Nachrichtenkonsum.}, language = {de} } @masterthesis{Schmidt2023, type = {Bachelor Thesis}, author = {Schmidt, Lucie}, title = {„Keine Schmerzen in der Regel" : Aufkl{\"a}rungskampagne zur Fr{\"u}herkennung der Krankheit Endometriose}, publisher = {FH Aachen}, address = {Aachen}, pages = {75 Seiten}, year = {2023}, abstract = {Jede zehnte Frau hat Endometriose. Hierbei entstehen Zysten und Entz{\"u}ndungen, welche sich beispielsweise an den Eierst{\"o}cken ansiedeln k{\"o}nnen. Wie kann es also sein, dass so viele noch nie was von dieser Erkrankung geh{\"o}rt haben? Mit der online Aufkl{\"a}rungskampagne „ Keine Schmerzen in der Regel" soll sich das {\"a}ndern. In vielen F{\"a}llen werden Beschwerden der Endometriose f{\"a}lschlicherweise als normale Menstruationsbeschwerden abgetan. Die Differenzierung zwischen normal und nicht normal misslingt. Die Aufmerksamkeit von M{\"a}dchen und Frauen, die sich in den nicht normalen Aspekten wiederfinden, soll erregt werden. Daf{\"u}r werden vier Symptome visualisiert und gegen{\"u}bergestellt. Zus{\"a}tzlich bietet ein Schnellcheck weitere Informationen. Diese Kampagne soll dem Problem der Unbekanntheit von Endometriose entgegenwirken und ein gesellschaftliches Bewusstsein f{\"u}r sie schaffen.}, language = {de} } @incollection{GrossThulfautRenz2000, author = {Groß, Rolf Fritz and Thulfaut, Christian and Renz, Ulrich}, title = {On-Line Simulation mit LabView: Experimentelle und numerische Analyse homogener Gasphasenreaktionen aus Kraftwerksprozessen,}, series = {Virtuelle Instrumente in der Praxis. Begleitband zum Kongress VIP 2000}, booktitle = {Virtuelle Instrumente in der Praxis. Begleitband zum Kongress VIP 2000}, editor = {Jamal, Rahman and Jaschinski, Hans}, publisher = {H{\"u}thig}, address = {Heidelberg}, isbn = {3-7785-2789-4 (print)}, pages = {103 -- 108}, year = {2000}, abstract = {The institute of heat transfer and air conditioning at the Aachen University of Technology operates several test facilities in order to investigate homogeneous and catalytical processes for the reduction of gaseous pollutants (e.g. nitrous oxide) of flue gases in a tempeature range up to 900°C. One test facility consists of a stainless steel reactor in which the influence of reducing additives can be investigated. The software tool, created with LabVIEW 5.01, offers the possibility to measure, visualize and control all relevant physical quantities and to gain a numerical solution of the problem by solving the one dimensional, steady state conservation equations.}, language = {de} } @misc{SteuerDankertBergPostweilerLeichtScholten2023, author = {Steuer-Dankert, Linda and Berg-Postweiler, Julia and Leicht-Scholten, Carmen}, title = {One does not fit all: applying anti-bias trainings in academia}, series = {Twenty-third international conference on diversity in organizations, communities \& nations June 22 - 23, 2023 Toronto Metropolitan University, Rogers Communication Centre Toronto, Canada}, journal = {Twenty-third international conference on diversity in organizations, communities \& nations June 22 - 23, 2023 Toronto Metropolitan University, Rogers Communication Centre Toronto, Canada}, year = {2023}, abstract = {Anti-bias trainings are increasingly demanded and practiced in academia and industry to increase employees' sensitivity to discrimination, racism, and diversity. Under the heading of "Diversity Management", anti-bias trainings are mainly offered as one-off workshops intending to raise awareness of unconscious biases, create a diversity-affirming corporate culture, awake awareness of the potential of diversity, and ultimately enable the reflection of diversity in development processes. However, coming from childhood education, research and scientific articles on the sustainable effectiveness of anti-bias in adulthood, especially in academia, are very scarce. In order to fill this research gap, the paper explores how sustainable the effects of individual anti-bias trainings on the behavior of participants are. In order to investigate this, participant observation in a qualitative pre-post setting was conducted, analyzing anti-bias trainings in an academic context. Two observers actively participated in the training sessions and documented the activities and reflection processes of the participants. Overall, the results question the effectiveness of single anti-bias trainings and show that a target-group adaptive approach is mandatory due to the background of the approach in early childhood education. Therefore, it can be concluded that anti-bias work needs to be adapted to the target group's needs and reality of life. Furthermore, the study reveals that single anti-bias trainings must be embedded in a holistic diversity management approach to stimulate sustainable reflection processes among the target group. This paper is one of the first to scientifically evaluate anti-bias training effectiveness, especially in engineering sciences and the university context.}, language = {en} } @article{GrossTimmer1998, author = {Groß, Rolf Fritz and Timmer, H.}, title = {Energetische und betriebswirtschaftliche Bewertung von K{\"u}hlsystemen f{\"u}r K{\"u}hllager}, series = {HLH. Heizung, L{\"u}ftung/Klima, Haustechnik}, volume = {49}, journal = {HLH. Heizung, L{\"u}ftung/Klima, Haustechnik}, number = {9}, publisher = {Springer}, address = {D{\"u}sseldorf}, issn = {1436-5103}, pages = {74 -- 77}, year = {1998}, language = {de} } @incollection{GrossHeckenRenz1999, author = {Groß, Rolf Fritz and Hecken, M. and Renz, Ulrich}, title = {Hot gas filtration with ceramic filter candles: experimental and numerical investigations on fluid flow during element cleaning}, series = {High temperature gas cleaning. Vol. 2}, booktitle = {High temperature gas cleaning. Vol. 2}, editor = {Dittler, A. and Hemmer, G. and Kasper, G.}, publisher = {KIT Institut f{\"u}r Mechanische Verfahrenstechnik und Mechanik}, address = {Karlsruhe}, isbn = {3-9805220-1-6}, pages = {862 -- 873}, year = {1999}, abstract = {Ceramic hot gas filters are widely used in combined cycles based on pressurised fluidised beds. They fulfil most of the demands with respect to cleaning efficiency and long time durability, but their operation regarding the consumption of pulse gas and energy still has to be optimised. Experimental investigations were carried out to measure the flow field, the pressure and the gas temperature inside the filter candle during pulse jet cleaning. These results are compared with the results of a numerical procedure based on a solution of the two - dimensional conservation equations for momentum and energy. The observed difficulties handling different flow regimes like highly turbulent flow as well as Darcy flow simultaneously are discussed.}, language = {en} } @unpublished{BornheimGriegerBlanecketal.2023, author = {Bornheim, Tobias and Grieger, Niklas and Blaneck, Patrick Gustav and Bialonski, Stephan}, title = {Preprint: Speaker attribution in German parliamentary debates with QLoRA-adapted large language models}, series = {Journal for Language Technology and Computational Linguistics}, journal = {Journal for Language Technology and Computational Linguistics}, doi = {10.48550/arXiv.2309.09902}, pages = {8 Seiten}, year = {2023}, abstract = {The growing body of political texts opens up new opportunities for rich insights into political dynamics and ideologies but also increases the workload for manual analysis. Automated speaker attribution, which detects who said what to whom in a speech event and is closely related to semantic role labeling, is an important processing step for computational text analysis. We study the potential of the large language model family Llama 2 to automate speaker attribution in German parliamentary debates from 2017-2021. We fine-tune Llama 2 with QLoRA, an efficient training strategy, and observe our approach to achieve competitive performance in the GermEval 2023 Shared Task On Speaker Attribution in German News Articles and Parliamentary Debates. Our results shed light on the capabilities of large language models in automating speaker attribution, revealing a promising avenue for computational analysis of political discourse and the development of semantic role labeling systems.}, language = {en} } @article{ThulfautGross2000, author = {Thulfaut, Christian and Groß, Rolf Fritz}, title = {Experimentelle Untersuchung der Luftstromvermischung in Hybridzellenk{\"u}hlt{\"u}rmen}, series = {HLH. Heizung, L{\"u}ftung/Klima, Haustechnik}, volume = {51}, journal = {HLH. Heizung, L{\"u}ftung/Klima, Haustechnik}, number = {8}, publisher = {Springer}, address = {D{\"u}sseldorf}, issn = {1436-5103}, pages = {48 -- 49}, year = {2000}, abstract = {Zwangsbel{\"u}ftete Nassk{\"u}hlt{\"u}rme haben im Gegensatz zur Trockenk{\"u}hlung bei naßkaltem Wetter Nebelschwaden zur Folge. Dagegen ist bei Naßk{\"u}hlung die spezifische K{\"u}hlleistung durch abgef{\"u}hrte Kondensationsw{\"a}rme h{\"o}her als bei der Trockenk{\"u}hlung. Hybridzellenk{\"u}hlt{\"u}rme kombinieren beide Methoden, so daß ein Mischstrom beider Abluftstr{\"o}me die Wasserdampf-S{\"a}ttigungsgrenze nicht {\"u}berschreitet. Durch das Mischungsverh{\"a}ltnis kann man den gew{\"u}nschten S{\"a}ttigungsgrad einstellen. Je dichter dieser an der S{\"a}ttigungsgrenze liegt, desto h{\"o}her ist die K{\"u}hlleistung. Der von unten zugef{\"u}hrte Luftstrom der Naßk{\"u}hlung und der seitlich zugef{\"u}hrte trockene Abluftstrom m{\"u}ssen sehr gut durchmischt werden, um {\"u}ber den gesamten Austrittsquerschnitt des K{\"u}hlturms die S{\"a}ttigungsgrenze nicht zu {\"u}berschreiten. In einem maßstabsgerechten Modell wurde der Mischungsgrad mit und ohne Einbauten untersucht. {\"U}ber ein Raster von 10 mal 10 Punkten wurde die {\"o}rtliche Temperaturverteilung ermittelt. W{\"a}rmebilanzen ergeben dann die Mischungsg{\"u}te in einer Ebene oberhalb der Zellenkrone. W{\"a}hrend ohne Mischeinbauten der Trockenluftanteil in der Mitte des Querschnitts bei unter 15 \% liegt erh{\"o}hen Einbauten den Trockenluftanteil auf 30 \% bis {\"u}ber 40 \%. Dabei wurde die Trockenluft auf jeder K{\"u}hlturmseite durch 4 konisch zulaufende, unten offene und oben geschlitzte Einbauten kanalisiert. Die Nassluft wurde durch eine im Querschnitt dreieckige Rinne in Richtung der Trockenluftausl{\"a}sse umgelenkt. Im Raster leicht zu lokalisierende Abweichungen vom gew{\"u}nschten Mittelwert zeigen Potential f{\"u}r die weitere Verbesserung der Einbauten.}, language = {de} } @techreport{AyarFielenbachGrossetal.2003, author = {Ayar, A. and Fielenbach, C. and Groß, Rolf Fritz and Holfeld, T. and Lockemann, S. and Severin, C. and Thulfaut, Christian and Hillemacher, B.}, title = {Druckkohlenstaubverbrennung von rheinischer Braunkohle : Abschlussbericht}, pages = {119 Seiten}, year = {2003}, abstract = {Im Rahmen des Forschungsschwerpunkts 3 wurde experimentell und theoretisch die NO{sub x}-Bildung und -Reduktion bei der Druckkohlenstaubverbrennung untersucht. Der zuvor beschriebene Einfluss der Kohlemahlung auf die Flamme konnte auch anhand der NO{sub x}-Messungen an der DKSF-Anlage Aachen bestaetigt werden. Waehrend mit Braunkohle im Staubfeuerungsbetrieb noch keine eindeutige Druckabhaengigkeit nachgewiesen werden konnte, haben vom Lehrstuhl durchgefuehrte NO{sub x}-Messungen an der DKSF-Anlage Dorsten im Schmelzkammerfeuerungsbetrieb mit der Steinkohle Spitzbergen zwischen 9 und 13 bar ein Absinken der Stickoxidkonzentrationen mit steigendem Druck ergeben. Fuer die rheinische Braunkohle soll dieser Druckeinfluss in den naechsten Versuchsfahrten ausfuehrlicher untersucht werden. Es wurde anhand von numerischen Simulationen zu einer Braunkohleflamme der 6. Versuchsfahrt ein Vergleich zwischen der NO{sub x}-Modellierung im Standard-FLUENT-Code und in dem mit User Defined Subroutines der international flame research foundation (IFRF), Ijmuiden, erweiterten FLUENT-Code vorgenommen. Es zeigte sich, dass bei der Modellierung der Stickoxidbildung die unterschiedlich vorhergesagten Flammentemperaturen eine entscheidende Rolle spielen. Eine genauere Analyse der NO{sub x}-Modelle im Vergleich zu Messergebnissen ist bei einer Schmelzkammerfeuerung mit einer stabilen Flamme vorzunehmen. Es wurden zusaetzlich Messungen zur Untersuchung der Kinetik homogener Gasphasenreaktionen in Rauchgasen an einem Stahlreaktor durchgefuehrt. Dabei wurde sowohl der thermisch bedingte als auch der durch zudosierte Additive katalysierte Abbau nitroser Komponenten betrachtet. Vergleichend wurden mit einem am Lehrstuhl entwickelten Programm die Kinetik beschrieben. Hierbei wird mit einer Sensitivitaetsanalyse eine Reduzierung der detaillierten Darstellung der Reaktionskinetik erreicht, die es erlaubt, mit einem CFD-Code wie FLUENT zwei- und dreidimensionale Rechnungen zum Abbau verschiedener Rauchgaskomponenten durchzufuehren. Die Uebereinstimmung zwischen ein- und zweidimensionalen Rechnungen und den Messungen ist gut.}, language = {de} } @incollection{EggertZaehlWolfetal.2023, author = {Eggert, Mathias and Z{\"a}hl, Philipp M. and Wolf, Martin R. and Haase, Martin}, title = {Applying leaderboards for quality improvement in software development projects}, series = {Software Engineering for Games in Serious Contexts}, booktitle = {Software Engineering for Games in Serious Contexts}, editor = {Cooper, Kendra M.L. and Bucchiarone, Antonio}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-33337-8 (Print)}, doi = {10.1007/978-3-031-33338-5_11}, pages = {243 -- 263}, year = {2023}, abstract = {Software development projects often fail because of insufficient code quality. It is now well documented that the task of testing software, for example, is perceived as uninteresting and rather boring, leading to poor software quality and major challenges to software development companies. One promising approach to increase the motivation for considering software quality is the use of gamification. Initial research works already investigated the effects of gamification on software developers and come to promising. Nevertheless, a lack of results from field experiments exists, which motivates the chapter at hand. By conducting a gamification experiment with five student software projects and by interviewing the project members, the chapter provides insights into the changing programming behavior of information systems students when confronted with a leaderboard. The results reveal a motivational effect as well as a reduction of code smells.}, language = {en} } @article{WendlandtKochBritzetal.2023, author = {Wendlandt, Tim and Koch, Claudia and Britz, Beate and Liedek, Anke and Schmidt, Nora and Werner, Stefan and Gleba, Yuri and Vahidpour, Farnoosh and Welden, Melanie and Poghossian, Arshak and Sch{\"o}ning, Michael Josef}, title = {Facile Purification and Use of Tobamoviral Nanocarriers for Antibody-Mediated Display of a Two-Enzyme System}, series = {Viruses}, volume = {9}, journal = {Viruses}, number = {15}, publisher = {MDPI}, address = {Basel}, issn = {1999-4915}, doi = {doi.org/10.3390/v15091951}, pages = {Artikel 1951}, year = {2023}, abstract = {Immunosorbent turnip vein clearing virus (TVCV) particles displaying the IgG-binding domains D and E of Staphylococcus aureus protein A (PA) on every coat protein (CP) subunit (TVCVPA) were purified from plants via optimized and new protocols. The latter used polyethylene glycol (PEG) raw precipitates, from which virions were selectively re-solubilized in reverse PEG concentration gradients. This procedure improved the integrity of both TVCVPA and the wild-type subgroup 3 tobamovirus. TVCVPA could be loaded with more than 500 IgGs per virion, which mediated the immunocapture of fluorescent dyes, GFP, and active enzymes. Bi-enzyme ensembles of cooperating glucose oxidase and horseradish peroxidase were tethered together on the TVCVPA carriers via a single antibody type, with one enzyme conjugated chemically to its Fc region, and the other one bound as a target, yielding synthetic multi-enzyme complexes. In microtiter plates, the TVCVPA-displayed sugar-sensing system possessed a considerably increased reusability upon repeated testing, compared to the IgG-bound enzyme pair in the absence of the virus. A high coverage of the viral adapters was also achieved on Ta2O5 sensor chip surfaces coated with a polyelectrolyte interlayer, as a prerequisite for durable TVCVPA-assisted electrochemical biosensing via modularly IgG-assembled sensor enzymes.}, language = {en} } @article{BertzMolinnusSchoeningetal.2023, author = {Bertz, Morten and Molinnus, Denise and Sch{\"o}ning, Michael Josef and Homma, Takayuki}, title = {Real-time monitoring of H₂O₂ sterilization on individual bacillus atrophaeus spores by optical sensing with trapping Raman spectroscopy}, series = {Chemosensors}, volume = {8}, journal = {Chemosensors}, number = {11}, publisher = {MDPI}, address = {Basel}, issn = {2227-9040}, doi = {10.3390/chemosensors11080445}, pages = {Artikel 445}, year = {2023}, abstract = {Hydrogen peroxide (H₂O₂), a strong oxidizer, is a commonly used sterilization agent employed during aseptic food processing and medical applications. To assess the sterilization efficiency with H₂O₂, bacterial spores are common microbial systems due to their remarkable robustness against a wide variety of decontamination strategies. Despite their widespread use, there is, however, only little information about the detailed time-resolved mechanism underlying the oxidative spore death by H₂O₂. In this work, we investigate chemical and morphological changes of individual Bacillus atrophaeus spores undergoing oxidative damage using optical sensing with trapping Raman microscopy in real-time. The time-resolved experiments reveal that spore death involves two distinct phases: (i) an initial phase dominated by the fast release of dipicolinic acid (DPA), a major spore biomarker, which indicates the rupture of the spore's core; and (ii) the oxidation of the remaining spore material resulting in the subsequent fragmentation of the spores' coat. Simultaneous observation of the spore morphology by optical microscopy corroborates these mechanisms. The dependence of the onset of DPA release and the time constant of spore fragmentation on H₂O₂ shows that the formation of reactive oxygen species from H₂O₂ is the rate-limiting factor of oxidative spore death.}, language = {en} } @phdthesis{Gross2002, author = {Groß, Rolf Fritz}, title = {Zur Kinetik homogener Gasphasenreaktionen nitroser Komponenten in Rauchgasen einer kohlebefeuerten Wirbelschicht}, publisher = {Shaker}, address = {Aachen}, isbn = {3-8322-0004-5 (softcover)}, pages = {X, 146 Seiten}, year = {2002}, language = {de} } @article{GrossBergerGross2003, author = {Groß, Rolf Fritz and Berger, J. and Groß, H.}, title = {Geb{\"a}udeautomation - Betriebsdatenerfassung und Geb{\"a}udeleittechnik im Klartext}, series = {HLH. Heizung, L{\"u}ftung/Klima, Haustechnik}, volume = {54}, journal = {HLH. Heizung, L{\"u}ftung/Klima, Haustechnik}, number = {2}, publisher = {Springer}, address = {D{\"u}sseldorf}, issn = {1436-5103}, pages = {81}, year = {2003}, language = {de} } @article{GrossBerger2005, author = {Groß, Rolf Fritz and Berger, J.}, title = {Quo Vadis - Ausblick in die Geb{\"a}udeleittechnik der Zukunft}, series = {HLH. Heizung, L{\"u}ftung/Klima, Haustechnik}, volume = {56}, journal = {HLH. Heizung, L{\"u}ftung/Klima, Haustechnik}, number = {1}, publisher = {Springer}, address = {D{\"u}sseldorf}, issn = {1436-5103}, pages = {39 -- 41}, year = {2005}, abstract = {Auf dem Weg zum vernetzten Haus stoßen Hersteller und Planer, insbesondere im privaten Wohnungsbau, zur Zeit noch auf erhebliche Widerst{\"a}nde bei der Durchdringung des Marktes.}, language = {de} } @book{Heuermann2023, author = {Heuermann, Holger}, title = {Hochfrequenztechnik. Komponenten und Mess-, Funk-, RFID- sowie Lokalisierungssysteme}, edition = {4}, publisher = {Springer Fachmedien}, address = {Wiesbaden}, isbn = {978-3-658-37825-7 (Print)}, pages = {XV, 453 Seiten}, year = {2023}, abstract = {Dieses Lehr- und Fachbuch vermittelt anschaulich die Grundlagen der HF-Technik, gibt konkrete Beschreibungen f{\"u}r den Entwurf von linearen Komponenten aus Bauteilen wie auch Leitungen f{\"u}r High-Speed- und HF-Schaltungen. Dem Leser wird vermittelt, wie Bauteile modelliert und Schaltungen synthetisiert und optimiert werden. Mit Hilfe frei verf{\"u}gbarer Simulationssoftware k{\"o}nnen GHz-Schaltungen selbst entwickelt werden. Viele {\"U}bungsbeispiele erm{\"o}glichen die Eigenkontrolle des Wissensstandes. Weiterhin werden komplexe nichtlineare Komponenten wie Hochfrequenzmischer, Oszillatoren und Synthesegeneratoren in ihrer Funktionalit{\"a}t dargestellt. Die neuen Mixed-Mode-Streuparameter sowie deren Leitungs- und Schaltungstechnik f{\"u}r Anwendungen der schnellen Digital- und der modernen HF-Technik sind ausf{\"u}hrlich beschrieben. Es wird auf Systeme f{\"u}r folgende Bereiche eingegangen: Streuparametermesstechnik, verschiedene Funktechniken, UHF-RFID und Lokalisierung- und Ortung. Dem Leser wird somit erm{\"o}glicht, komplexe GHz-Schaltungen insbesondere mit Halbleiter-, SMD- und LTCC-Schaltungen zu entwickeln.}, language = {de} } @techreport{HoeflerGross2016, author = {H{\"o}fler, Matthias and Groß, Rolf Fritz}, title = {Optimierung der Oxidationskinetik von Sulfit zu Sulfat durch effiziente feinblasige Bel{\"u}ftung bei Anlagen zur Rauchgasentschwefelung fossil befeuerter Kraftwerke und Industrieanlagen mittels Seewasser ("Optiox")}, pages = {1 Seite}, year = {2016}, abstract = {Das Forschungsvorhaben Optiox besch{\"a}ftigt sich mit der Optimierung eines Bel{\"u}ftungsbeckens zur Rauchgasentschwefelung fossil befeuerter Kraftwerke mittels Seewasser. Unter Neutralisierung der entstehenden Hydroniumionen (H3O+) durch die nat{\"u}rliche Alkalit{\"a}t des Seewassers dissoziiert Schwefeldioxid aus dem Rauchgase im vorgeschalteten Absorber beim Phasen{\"u}bergang von der Gas- in die Fl{\"u}ssigphase zu Sulfiten. Im Bel{\"u}ftungsbecken werden diese Sulfite mittels eingeblasener Luft zu Sulfaten oxidiert, was zu einer geringen Erh{\"o}hung der Sulfatfracht vor Einleitung ins Meer f{\"u}hrt, die unterhalb der nat{\"u}rlichen Schwankungen liegt. Daneben dient das Bel{\"u}ftungsbecken der Konditionierung des Seewassers hinsichtlich pH-Wert und Sauerstoffgehalt und ist mit hoch effizienten Bel{\"u}ftern ausgestattet, deren Spezifikation den jeweiligen Randbedingungen, wie Abscheideleistung des Absorbers, Beckengeometrie sowie lokalen Gegebenheiten angepasst wird.}, language = {de} } @masterthesis{Leiwen2023, type = {Bachelor Thesis}, author = {Leiwen, Sophie}, title = {Steinreich : Mineralien des Siegerlands}, publisher = {FH Aachen}, address = {Aachen}, pages = {69 Seiten}, year = {2023}, abstract = {Der Aufbau und die Entstehung unseres Planeten sind untrennbar mit der Bildung von Gesteinen verbunden - diese setzen sich aus verschiedenen Mineralien zusammen. Sie sind in der Natur weit verbreitet und spielen eine entscheidende Rolle in unserem t{\"a}glichen Leben. Obwohl vielen Menschen der Nutzen von Bodensch{\"a}tzen bewusst ist, besteht ein geringes Wissen {\"u}ber deren Vorkommen und Relevanz. F{\"u}r die wirtschaftliche Entwicklung des Siegerlandes beispielsweise waren der Abbau und der Handel mit Mineralien von großer Bedeutung. Insbesondere der langj{\"a}hrige Abbau von Eisenerz legte den Grundstein f{\"u}r die gesamte Metallindustrie der Region. Die Publikation visualisiert eine umfangreiche Sammlung Siegerl{\"a}nder Mineralien und vermittelt ein grundlegendes Verst{\"a}ndnis von Mineralien.}, language = {de} } @inproceedings{AlhaskirTschescheLinkeetal.2023, author = {Alhaskir, Mohamed and Tschesche, Matteo and Linke, Florian and Schriewer, Elisabeth and Weber, Yvonne and Wolking, Stefan and R{\"o}hrig, Rainer and Koch, Henner and Kutafina, Ekaterina}, title = {ECG matching: an approach to synchronize ECG datasets for data quality comparisons}, series = {Proceedings of the 68th Annual Meeting of the German Association of Medical Informatics, Biometry, and Epidemiology e.V. (gmds) 2023}, volume = {307}, booktitle = {Proceedings of the 68th Annual Meeting of the German Association of Medical Informatics, Biometry, and Epidemiology e.V. (gmds) 2023}, editor = {R{\"o}hrig, Rainer and Grabe, Niels and Haag, Martin and H{\"u}bner, Ursula and Sax, Ulrich and Schmidt, Carsten Oliver and Sedlmayr, Martin and Zapf, Antonia}, publisher = {IOS Press}, isbn = {978-1-64368-428-4 (Print)}, doi = {10.3233/SHTI230718}, pages = {225 -- 232}, year = {2023}, abstract = {Clinical assessment of newly developed sensors is important for ensuring their validity. Comparing recordings of emerging electrocardiography (ECG) systems to a reference ECG system requires accurate synchronization of data from both devices. Current methods can be inefficient and prone to errors. To address this issue, three algorithms are presented to synchronize two ECG time series from different recording systems: Binned R-peak Correlation, R-R Interval Correlation, and Average R-peak Distance. These algorithms reduce ECG data to their cyclic features, mitigating inefficiencies and minimizing discrepancies between different recording systems. We evaluate the performance of these algorithms using high-quality data and then assess their robustness after manipulating the R-peaks. Our results show that R-R Interval Correlation was the most efficient, whereas the Average R-peak Distance and Binned R-peak Correlation were more robust against noisy data.}, language = {en} } @inproceedings{Gross2018, author = {Groß, Rolf Fritz}, title = {M{\"o}glichkeiten und Grenzen f{\"u}r Forschung an Fachhochschulen}, series = {Smart Building Convention und BIMconvention in Aachen im September}, booktitle = {Smart Building Convention und BIMconvention in Aachen im September}, pages = {19 Seiten}, year = {2018}, language = {de} } @inproceedings{DuranParedesMottaghyHerrmannetal.2020, author = {Duran Paredes, Ludwin and Mottaghy, Darius and Herrmann, Ulf and Groß, Rolf Fritz}, title = {Online ground temperature and soil moisture monitoring of a shallow geothermal system with non-conventional components}, series = {EGU General Assembly 2020}, booktitle = {EGU General Assembly 2020}, year = {2020}, abstract = {We present first results from a newly developed monitoring station for a closed loop geothermal heat pump test installation at our campus, consisting of helix coils and plate heat exchangers, as well as an ice-store system. There are more than 40 temperature sensors and several soil moisture content sensors distributed around the system, allowing a detailed monitoring under different operating conditions.In the view of the modern development of renewable energies along with the newly concepts known as Internet of Things and Industry 4.0 (high-tech strategy from the German government), we created a user-friendly web application, which will connect the things (sensors) with the open network (www). Besides other advantages, this allows a continuous remote monitoring of the data from the numerous sensors at an arbitrary sampling rate.Based on the recorded data, we will also present first results from numerical simulations, taking into account all relevant heat transport processes.The aim is to improve the understanding of these processes and their influence on the thermal behavior of shallow geothermal systems in the unsaturated zone. This will in turn facilitate the prediction of the performance of these systems and therefore yield an improvement in their dimensioning when designing a specific shallow geothermal installation.}, language = {en} } @incollection{EngelmannBaumann2023, author = {Engelmann, Ulrich M. and Baumann, Martin}, title = {Moderationsexpertise f{\"u}r QMBs - die Methoden}, series = {Qualit{\"a}tsmanagement in Dienstleistungsunternehmen}, booktitle = {Qualit{\"a}tsmanagement in Dienstleistungsunternehmen}, editor = {Thomann, Hermann and Tr{\"a}ger, Thomas}, publisher = {T{\"U}V-Verlag}, address = {K{\"o}ln}, isbn = {978-3-8249-0473-0}, pages = {Kapitel 08631}, year = {2023}, abstract = {Damit Sie als Moderator effektiv und professionell moderieren k{\"o}nnen, sollten Sie die entsprechenden Methoden kennen. Mit den richtigen Methoden k{\"o}nnen Sie Diskussionen leiten, Konflikte l{\"o}sen, die Teilnehmer motivieren und daf{\"u}r sorgen, dass die Ziele der Veranstaltung erreicht werden. Außerdem helfen sie Ihnen, eine positive Atmosph{\"a}re zu schaffen und das Interesse der Teilnehmer zu halten. In diesem zweiten Beitrag der mehrteiligen Serie lernen Sie die grunds{\"a}tzlichen Methoden kennen, um erfolgreiche Teamsitzungen, Arbeitsgruppentreffen, Kick-offs und Meetings durchzuf{\"u}hren.}, language = {de} } @incollection{EngelmannBaumann2023, author = {Engelmann, Ulrich M. and Baumann, Martin}, title = {Moderationsexpertise - die Methoden}, series = {IT-Servicemanagement}, booktitle = {IT-Servicemanagement}, editor = {Lindinger, Markus and Bartsch, Oliver}, edition = {54. Update}, publisher = {T{\"U}V-Verlag}, address = {K{\"o}ln}, isbn = {978-3-8249-1154-7}, pages = {Kapitel 05531}, year = {2023}, abstract = {Damit Sie als Moderator effektiv und professionell moderieren k{\"o}nnen, sollten Sie die entsprechenden Methoden kennen. Mit den richtigen Methoden k{\"o}nnen Sie Diskussionen leiten, Konflikte l{\"o}sen, die Teilnehmer motivieren und daf{\"u}r sorgen, dass die Ziele der Veranstaltung erreicht werden. Außerdem helfen sie Ihnen, eine positive Atmosph{\"a}re zu schaffen und das Interesse der Teilnehmer zu halten. In diesem zweiten Beitrag der mehrteiligen Serie lernen Sie die grunds{\"a}tzlichen Methoden kennen, um erfolgreiche Teamsitzungen, Arbeitsgruppentreffen, Kick-offs und Meetings durchzuf{\"u}hren.}, language = {de} } @article{Pfaff2023, author = {Pfaff, Raphael}, title = {Braking distance prediction for vehicle consist in low-speed on-sight operation: a Monte Carlo approach}, series = {Railway Engineering Science}, volume = {31}, journal = {Railway Engineering Science}, number = {2}, publisher = {SpringerOpen}, issn = {2662-4753 (eISSN)}, doi = {10.1007/s40534-023-00303-7}, pages = {135 -- 144}, year = {2023}, abstract = {The first and last mile of a railway journey, in both freight and transit applications, constitutes a high effort and is either non-productive (e.g. in the case of depot operations) or highly inefficient (e.g. in industrial railways). These parts are typically managed on-sight, i.e. with no signalling and train protection systems ensuring the freedom of movement. This is possible due to the rather short braking distances of individual vehicles and shunting consists. The present article analyses the braking behaviour of such shunting units. For this purpose, a dedicated model is developed. It is calibrated on published results of brake tests and validated against a high-definition model for low-speed applications. Based on this model, multiple simulations are executed to obtain a Monte Carlo simulation of the resulting braking distances. Based on the distribution properties and established safety levels, the risk of exceeding certain braking distances is evaluated and maximum braking distances are derived. Together with certain parameters of the system, these can serve in the design and safety assessment of driver assistance systems and automation of these processes.}, language = {en} } @inproceedings{NeugebauerBrutschyMeyeretal.2014, author = {Neugebauer, Georg and Brutschy, Lucas and Meyer, Ulrike and Wetzel, Susanne}, title = {Privacy-preserving multi-party reconciliation secure in the malicious model}, series = {DPM 2013, SETOP 2013: Data Privacy Management and Autonomous Spontaneous Security}, booktitle = {DPM 2013, SETOP 2013: Data Privacy Management and Autonomous Spontaneous Security}, editor = {Garcia-Alfaro, Joaquin and Lioudakis, Georgios and Cuppens-Boulahia, Nora and Foley, Simon and Fitzgerald, William M.}, publisher = {Springer}, address = {Berlin}, isbn = {978-3-642-54567-2 (Print)}, doi = {10.1007/978-3-642-54568-9_12}, pages = {178 -- 193}, year = {2014}, abstract = {The problem of fair and privacy-preserving ordered set reconciliation arises in a variety of applications like auctions, e-voting, and appointment reconciliation. While several multi-party protocols have been proposed that solve this problem in the semi-honest model, there are no multi-party protocols that are secure in the malicious model so far. In this paper, we close this gap. Our newly proposed protocols are shown to be secure in the malicious model based on a variety of novel non-interactive zero-knowledge-proofs. We describe the implementation of our protocols and evaluate their performance in comparison to protocols solving the problem in the semi-honest case.}, language = {en} } @article{HerzwurmKramsPietschetal.2012, author = {Herzwurm, Georg and Krams, Benedikt and Pietsch, Wolfram and Schockert, Sixten}, title = {Report from the 3rd international workshop on requirements prioritization for customer oriented software development (RePriCo'12)}, series = {ACM SIGSOFT Software Engineering Notes}, volume = {37}, journal = {ACM SIGSOFT Software Engineering Notes}, number = {4}, publisher = {Association for Computing Machinery}, address = {New York}, issn = {0163-5948}, doi = {10.1145/2237796.2237817}, pages = {32 -- 34}, year = {2012}, abstract = {Prioritization is an essential task within requirements engineering to cope with complexity and to establish focus properly. The 3rd Workshop on Requirements Prioritization for customer oriented Software Development (RePriCo'12) focused on requirements prioritization and adjacent themes in the context of customer oriented development of bespoke and standard software. Five submissions have been accepted for the proceedings and for presentation. The report summarizes and points out key findings.}, language = {en} } @inproceedings{ViehmannLimpertHofmannetal.2023, author = {Viehmann, Tarik and Limpert, Nicolas and Hofmann, Till and Henning, Mike and Ferrein, Alexander and Lakemeyer, Gerhard}, title = {Winning the RoboCup logistics league with visual servoing and centralized goal reasoning}, series = {RoboCup 2022: Robot World Cup XXV}, booktitle = {RoboCup 2022: Robot World Cup XXV}, editor = {Eguchi, Amy and Lau, Nuno and Paetzel-Pr{\"u}smann, Maike and Wanichanon, Thanapat}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-28468-7 (Print)}, doi = {https://doi.org/10.1007/978-3-031-28469-4_25}, pages = {300 -- 312}, year = {2023}, abstract = {The RoboCup Logistics League (RCLL) is a robotics competition in a production logistics scenario in the context of a Smart Factory. In the competition, a team of three robots needs to assemble products to fulfill various orders that are requested online during the game. This year, the Carologistics team was able to win the competition with a new approach to multi-agent coordination as well as significant changes to the robot's perception unit and a pragmatic network setup using the cellular network instead of WiFi. In this paper, we describe the major components of our approach with a focus on the changes compared to the last physical competition in 2019.}, language = {en} } @masterthesis{Glueck2023, type = {Bachelor Thesis}, author = {Gl{\"u}ck, Anna}, title = {Entwicklung eines Erscheinungsbildes f{\"u}r ein Unternehmen im Bereich Bioenergiefassaden}, publisher = {FH Aachen}, address = {Aachen}, pages = {88 Seiten}, year = {2023}, abstract = {Nachhaltige Technologien, die Ressourcen schonen und Energie gewinnen, erlangen zunehmend an Bedeutung im urbanen Raum. Diese Bachelorarbeit befasst sich mit der Entwicklung eines Corporate Designs f{\"u}r ein Unternehmen, das sich auf die Fertigung und Planung von Bioenergiefassaden spezialisiert hat. Das Unternehmen sorgt durch seinen Fokus auf nachhaltige Energiegewinnung und effiziente Geb{\"a}udeplanung f{\"u}r die Verbesserung der {\"o}kologischen Herausforderungen. Das Ziel des neuen Corporate Designs ist es, die komplexe Thematik der Bioenergiefassaden der Zielgruppe effektiv zu vermitteln und ihr Interesse f{\"u}r dieses System zu wecken. Dabei werden Illustrationen und Infografiken eingesetzt, um die Technologie verst{\"a}ndlich darzustellen, die positiven Umweltauswirkungen sowie Vorteile der Bioenergiefassaden deutlich hervorzuheben und mehr Umsetzungen zu erzielen.}, language = {de} } @inproceedings{ZaehlTheisWolfetal.2023, author = {Z{\"a}hl, Philipp M. and Theis, Sabine and Wolf, Martin R. and K{\"o}hler, Klemens}, title = {Teamwork in software development and what personality has to do with it - an overview}, series = {Virtual, Augmented and Mixed Reality}, booktitle = {Virtual, Augmented and Mixed Reality}, editor = {Chen, Jessie Y. C. and Fragomeni, Gino}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-35633-9 (Print)}, doi = {10.1007/978-3-031-35634-6_10}, pages = {130 -- 153}, year = {2023}, abstract = {Due to the increasing complexity of software projects, software development is becoming more and more dependent on teams. The quality of this teamwork can vary depending on the team composition, as teams are always a combination of different skills and personality types. This paper aims to answer the question of how to describe a software development team and what influence the personality of the team members has on the team dynamics. For this purpose, a systematic literature review (n=48) and a literature search with the AI research assistant Elicit (n=20) were conducted. Result: A person's personality significantly shapes his or her thinking and actions, which in turn influences his or her behavior in software development teams. It has been shown that team performance and satisfaction can be strongly influenced by personality. The quality of communication and the likelihood of conflict can also be attributed to personality.}, language = {en} } @inproceedings{ArndtConzenElsenetal.2023, author = {Arndt, Tobias and Conzen, Max and Elsen, Ingo and Ferrein, Alexander and Galla, Oskar and K{\"o}se, Hakan and Schiffer, Stefan and Tschesche, Matteo}, title = {Anomaly detection in the metal-textile industry for the reduction of the cognitive load of quality control workers}, series = {PETRA '23: Proceedings of the 16th International Conference on PErvasive Technologies Related to Assistive Environments}, booktitle = {PETRA '23: Proceedings of the 16th International Conference on PErvasive Technologies Related to Assistive Environments}, publisher = {ACM}, isbn = {9798400700699}, doi = {10.1145/3594806.3596558}, pages = {535 -- 542}, year = {2023}, abstract = {This paper presents an approach for reducing the cognitive load for humans working in quality control (QC) for production processes that adhere to the 6σ -methodology. While 100\% QC requires every part to be inspected, this task can be reduced when a human-in-the-loop QC process gets supported by an anomaly detection system that only presents those parts for manual inspection that have a significant likelihood of being defective. This approach shows good results when applied to image-based QC for metal textile products.}, language = {en} } @article{DellmannGloriusLitvinovetal.2023, author = {Dellmann, Sophia Florence and Glorius, J. and Litvinov, Yu A. and Reifarth, R. and Al-Khasawneh, Kafa and Aliotta, M. and Bott, L. and Br{\"u}ckner, Benjamin and Bruno, C. G. and Chen, Ruijiu and Davinson, T. and Dickel, T. and Dillmann, Iris and Dmytriev, D. and Erbacher, P. and Freire-Fern{\´a}ndez, D. and Forstner, Oliver and Geissel, H. and G{\"o}bel, K. and Griffin, Christopher J. and Grisenti, R. and Gumberidze, Alexandre and Haettner, Emma and Hagmann, Siegbert and Heil, M. and Heß, R. and Hillenbrand, P.-M. and Joseph, R. and Jurado, B. and Kozhuharov, Christophor and Kulikov, I. and L{\"o}her, Bastian and Langer, Christoph and Leckenby, Guy and Lederer-Woods, C. and Lestinsky, M. and Litvinov, S. A. and Lorenz, B. A. and Lorenz, E. and Marsh, J. and Menz, Esther Babette and Morgenroth, T. and Petridis, N. and Pibernat, Jerome and Popp, U. and Psaltis, Athanasios and Sanjari, Shahab and Scheidenberger, C. and Sguazzin, M. and Sidhu, Ragandeep Singh and Spillmann, Uwe and Steck, M. and St{\"o}hlker, T. and Surzhykov, A. and Swartz, J. A. and T{\"o}rnqvist, H. and Varga, L. and Vescovi, Diego and Weick, H. and Weigand, M. and Woods, P. and Xing, Y. and Yamaguchi, Taiyo}, title = {Proton capture on stored radioactive ¹¹⁸Te ions}, series = {EPJ Web of Conferences}, volume = {279}, journal = {EPJ Web of Conferences}, number = {Article Number: 11018}, publisher = {EDP Sciences}, issn = {2100-014X}, doi = {10.1051/epjconf/202327911018}, pages = {1 -- 5}, year = {2023}, abstract = {Experimental determination of the cross sections of proton capture on radioactive nuclei is extremely difficult. Therefore, it is of substantial interest for the understanding of the production of the p-nuclei. For the first time, a direct measurement of proton-capture cross sections on stored, radioactive ions became possible in an energy range of interest for nuclear astrophysics. The experiment was performed at the Experimental Storage Ring (ESR) at GSI by making use of a sensitive method to measure (p,γ) and (p,n) reactions in inverse kinematics. These reaction channels are of high relevance for the nucleosyn-thesis processes in supernovae, which are among the most violent explosions in the universe and are not yet well understood. The cross section of the ¹¹⁸Te(p,γ) reaction has been measured at energies of 6 MeV/u and 7 MeV/u. The heavy ions interacted with a hydrogen gas jet target. The radiative recombination process of the fully stripped ¹¹⁸Te ions and electrons from the hydrogen target was used as a luminosity monitor. An overview of the experimental method and preliminary results from the ongoing analysis will be presented.}, language = {en} } @inproceedings{NethSchubaBrodkorbetal.2023, author = {Neth, Jannik and Schuba, Marko and Brodkorb, Karsten and Neugebauer, Georg and H{\"o}ner, Tim and Hack, Sacha}, title = {Digital forensics triage app for android}, series = {ARES '23: Proceedings of the 18th International Conference on Availability, Reliability and Security}, booktitle = {ARES '23: Proceedings of the 18th International Conference on Availability, Reliability and Security}, publisher = {ACM}, isbn = {9798400707728}, doi = {10.1145/3600160.3605017}, pages = {6 Seiten}, year = {2023}, abstract = {Digital forensics of smartphones is of utmost importance in many criminal cases. As modern smartphones store chats, photos, videos etc. that can be relevant for investigations and as they can have storage capacities of hundreds of gigabytes, they are a primary target for forensic investigators. However, it is exactly this large amount of data that is causing problems: extracting and examining the data from multiple phones seized in the context of a case is taking more and more time. This bears the risk of wasting a lot of time with irrelevant phones while there is not enough time left to analyze a phone which is worth examination. Forensic triage can help in this case: Such a triage is a preselection step based on a subset of data and is performed before fully extracting all the data from the smartphone. Triage can accelerate subsequent investigations and is especially useful in cases where time is essential. The aim of this paper is to determine which and how much data from an Android smartphone can be made directly accessible to the forensic investigator - without tedious investigations. For this purpose, an app has been developed that can be used with extremely limited storage of data in the handset and which outputs the extracted data immediately to the forensic workstation in a human- and machine-readable format.}, language = {en} } @inproceedings{SchulzeBuxlohGrossUlbrich2021, author = {Schulze-Buxloh, Lina and Groß, Rolf Fritz and Ulbrich, Michelle}, title = {Digital planning using building information modelling and virtual reality: new approach for students' remote practical training under lockdown conditions in the course of smart building engineering}, series = {Proceedings of International Conference on Education in Mathematics, Science and Technology 2021}, booktitle = {Proceedings of International Conference on Education in Mathematics, Science and Technology 2021}, publisher = {ISTES Organization}, address = {San Antonio, TX}, isbn = {978-1-952092-17-6}, pages = {118 -- 123}, year = {2021}, abstract = {The worldwide Corona pandemic has severely restricted student projects in the higher semesters of engineering courses. In order not to delay the graduation, a new concept had to be developed for projects under lockdown conditions. Therefore, unused rooms at the university should be digitally recorded in order to develop a new usage concept as laboratory rooms. An inventory of the actual state of the rooms was done first by taking photos and listing up all flaws and peculiarities. After that, a digital site measuring was done with a 360° laser scanner and these recorded scans were linked to a coherent point cloud and transferred to a software for planning technical building services and supporting Building Information Modelling (BIM). In order to better illustrate the difference between the actual and target state, two virtual reality models were created for realistic demonstration. During the project, the students had to go through the entire digital planning phases. Technical specifications had to be complied with, as well as documentation, time planning and cost estimate. This project turned out to be an excellent alternative to on-site practical training under lockdown conditions and increased the students' motivation to deal with complex technical questions.}, language = {en} } @inproceedings{SchulzeBuxlohGross2021, author = {Schulze-Buxloh, Lina and Groß, Rolf Fritz}, title = {Interdisciplinary Course Smart Building Engineering: A new approach of teaching freshmen in remote teamwork project under pandemic restrictions}, series = {New Perspectives in Science Education - International Conference}, booktitle = {New Perspectives in Science Education - International Conference}, publisher = {Filodiritto}, address = {Bologna}, pages = {4 Seiten}, year = {2021}, abstract = {In the context of the Corona pandemic and its impact on teaching like digital lectures and exercises a new concept especially for freshmen in demanding courses of Smart Building Engineering became necessary. As there were hardly any face-to-face events at the university, the new teaching concept should enable a good start into engineering studies under pandemic conditions anyway and should also replace the written exam at the end. The students should become active themselves in small teams instead of listening passively to a lecture broadcast online with almost no personal contact. For this purpose, a role play was developed in which the freshmen had to work out a complete solution to the realistic problem of designing, construction planning and implementing a small guesthouse. Each student of the team had to take a certain role like architect, site manager, BIM-manager, electrician and the technitian for HVAC installations. Technical specifications must be complied with, as well as documentation, time planning and cost estimate. The final project folder had to contain technical documents like circuit diagrams for electrical components, circuit diagrams for water and heating, design calculations and components lists. On the other hand construction schedule, construction implementation plan, documentation of the construction progress and minutes of meetings between the various trades had to be submitted as well. In addition to the project folder, a model of the construction project must also be created either as a handmade model or as a digital 3D-model using Computer-aided design (CAD) software. The first steps in the field of Building information modelling (BIM) had also been taken by creating a digital model of the building showing the current planning status in real time as a digital twin. This project turned out to be an excellent training of important student competencies like teamwork, communication skills, and self -organisation and also increased motivation to work on complex technical questions. The aim of giving the student a first impression on the challenges and solutions in building projects with many different technical trades and their points of view was very well achieved and should be continued in the future.}, language = {en} } @masterthesis{Baumann2023, type = {Bachelor Thesis}, author = {Baumann, Ivana Edita}, title = {Toolbar : Werkzeuge des Grafikdesigns}, publisher = {FH Aachen}, address = {Aachen}, pages = {96 Seiten}, year = {2023}, abstract = {Von Zeichentisch und Letraset zu inhaltsbasierter F{\"u}llung und OpenType - wie sich die Werkzeuge des Grafikdesigns entwickelt und die Gestaltungsprozesse beeinflusst haben. Die Bachelorarbeit „Toolbar: Werkzeuge des Grafikdesigns" setzt sich mit der eigenen Disziplin, dem Grafikdesign, auseinander und geht dabei seinen Wurzeln, den Werkzeugen, nach. Im Rahmen dessen werden in Gespr{\"a}chen mit verschiedenen Gestalter*innen Tools und Technologien des Grafikdesigns untersucht und verglichen - angefangen vom analogen Paste-Up bis hin zu modernen Designmethoden. Dabei wird diskutiert, wie sich die Werkzeuge im Laufe der Zeit entwickelt haben und welche Auswirkungen dies auf das Grafikdesign und die Positionierung von Designer*innen hatte. Außerdem wird die Bedeutung von Werkzeugen im kreativen Prozess und ihre Auswirkungen auf die Gestaltung hinterfragt und aufgezeigt.}, language = {de} } @phdthesis{Gaigall2023, author = {Gaigall, Daniel}, title = {On selected problems in multivariate analysis}, doi = {10.15488/14304}, pages = {17 Seiten}, year = {2023}, abstract = {Selected problems in the field of multivariate statistical analysis are treated. Thereby, one focus is on the paired sample case. Among other things, statistical testing problems of marginal homogeneity are under consideration. In detail, properties of Hotelling's T² test in a special parametric situation are obtained. Moreover, the nonparametric problem of marginal homogeneity is discussed on the basis of possibly incomplete data. In the bivariate data case, properties of the Hoeffding-Blum-Kiefer-Rosenblatt independence test statistic on the basis of partly not identically distributed data are investigated. Similar testing problems are treated within the scope of the application of a result for the empirical process of the concomitants for partly categorial data. Furthermore, testing changes in the modeled solvency capital requirement of an insurance company by means of a paired sample from an internal risk model is discussed. Beyond the paired sample case, a new asymptotic relative efficiency concept based on the expected volumes of multidimensional confidence regions is introduced. Besides, a new approach for the treatment of the multi-sample goodness-of-fit problem is presented. Finally, a consistent test for the treatment of the goodness-of-fit problem is developed for the background of huge or infinite dimensional data.}, language = {en} } @article{FissabreRottke2023, author = {Fissabre, Anke and Rottke, Evelin}, title = {Das Quelle-Fertighaus : Einklang von Maß, Konstruktion und Entwurf}, series = {architectura}, volume = {51}, journal = {architectura}, number = {1}, editor = {Bergdoll, Barry and Schwarting, Andreas and Tragbar, Klaus}, publisher = {Deutscher Kunstverlag (DKV)}, address = {Berlin}, issn = {2569-1554}, doi = {10.1515/atc-2021-1005}, pages = {57 -- 78}, year = {2023}, abstract = {The steel prefabricated family house ›Quelle-Fertighaus‹ designed and constructed by the German company Quelle, is an innovative modular system commercialised in 1962. All aspects of the Quelle-Fertighaus are planned on the principle of minimal effort for maximal flexibility. The clever design of the ground plan based on a 4 m × 7 m module offers the flexibility for either one to three additional modules. The steel construction is innovative and unique, consisting of load-bearing portal frames acting as braces. The house design is furthermore characterised by a simple metrical grid layout and the practical placement of the foundation and basement, which allowed the very cost-effective production and the lowest price for a prefabricated family house in Germany during the postwar era. Nowadays its portal-frame-construction offers an interesting approach for its renovation and transformation according to present building demands.}, language = {de} } @inproceedings{KueppersSchubaNeugebaueretal.2023, author = {K{\"u}ppers, Malte and Schuba, Marko and Neugebauer, Georg and H{\"o}ner, Tim and Hack, Sacha}, title = {Security analysis of the KNX smart building protocol}, series = {ARES '23: Proceedings of the 18th International Conference on Availability, Reliability and Security}, booktitle = {ARES '23: Proceedings of the 18th International Conference on Availability, Reliability and Security}, publisher = {ACM}, doi = {10.1145/3600160.3605167}, pages = {1 -- 7}, year = {2023}, abstract = {KNX is a protocol for smart building automation, e.g., for automated heating, air conditioning, or lighting. This paper analyses and evaluates state-of-the-art KNX devices from manufacturers Merten, Gira and Siemens with respect to security. On the one hand, it is investigated if publicly known vulnerabilities like insecure storage of passwords in software, unencrypted communication, or denialof-service attacks, can be reproduced in new devices. On the other hand, the security is analyzed in general, leading to the discovery of a previously unknown and high risk vulnerability related to so-called BCU (authentication) keys.}, language = {en} } @misc{SchulzeBuxlohGrossCheng2020, author = {Schulze-Buxloh, Lina and Groß, Rolf Fritz and Cheng, Kevin Toni}, title = {Development and manufacturing of an interactive three-dimensional phase diagram of carbon dioxide for teaching sessions in thermodynamics}, series = {Proceedings of the International Conference The Future of Education 2020}, journal = {Proceedings of the International Conference The Future of Education 2020}, year = {2020}, language = {en} } @inproceedings{GaldiHartungDugelay2017, author = {Galdi, Chiara and Hartung, Frank and Dugelay, Jean-Luc}, title = {Videos versus still images: Asymmetric sensor pattern noise comparison on mobile phones}, series = {Electronic Imaging}, booktitle = {Electronic Imaging}, publisher = {Society for Imaging Science and Technology}, address = {Springfield, Virginia}, issn = {2470-1173}, doi = {10.2352/ISSN.2470-1173.2017.7.MWSF-331}, pages = {100 -- 103}, year = {2017}, abstract = {Nowadays, the most employed devices for recoding videos or capturing images are undoubtedly the smartphones. Our work investigates the application of source camera identification on mobile phones. We present a dataset entirely collected by mobile phones. The dataset contains both still images and videos collected by 67 different smartphones. Part of the images consists in photos of uniform backgrounds, especially collected for the computation of the RSPN. Identifying the source camera given a video is particularly challenging due to the strong video compression. The experiments reported in this paper, show the large variation in performance when testing an highly accurate technique on still images and videos.}, language = {en} } @article{ThomaThomessenGardietal.2023, author = {Thoma, Andreas and Thomessen, Karolin and Gardi, Alessandro and Fisher, A. and Braun, Carsten}, title = {Prioritising paths: An improved cost function for local path planning for UAV in medical applications}, series = {The Aeronautical Journal}, journal = {The Aeronautical Journal}, number = {First View}, publisher = {Cambridge University Press}, address = {Cambridge}, issn = {0001-9240 (Print)}, doi = {10.1017/aer.2023.68}, pages = {1 -- 18}, year = {2023}, abstract = {Even the shortest flight through unknown, cluttered environments requires reliable local path planning algorithms to avoid unforeseen obstacles. The algorithm must evaluate alternative flight paths and identify the best path if an obstacle blocks its way. Commonly, weighted sums are used here. This work shows that weighted Chebyshev distances and factorial achievement scalarising functions are suitable alternatives to weighted sums if combined with the 3DVFH* local path planning algorithm. Both methods considerably reduce the failure probability of simulated flights in various environments. The standard 3DVFH* uses a weighted sum and has a failure probability of 50\% in the test environments. A factorial achievement scalarising function, which minimises the worst combination of two out of four objective functions, reaches a failure probability of 26\%; A weighted Chebyshev distance, which optimises the worst objective, has a failure probability of 30\%. These results show promise for further enhancements and to support broader applicability.}, language = {en} } @incollection{DachwaldUlamecKowalskietal.2023, author = {Dachwald, Bernd and Ulamec, Stephan and Kowalski, Julia and Boxberg, Marc S. and Baader, Fabian and Biele, Jens and K{\"o}mle, Norbert}, title = {Ice melting probes}, series = {Handbook of Space Resources}, booktitle = {Handbook of Space Resources}, editor = {Badescu, Viorel and Zacny, Kris and Bar-Cohen, Yoseph}, publisher = {Springer}, address = {Cham}, isbn = {978-3-030-97912-6 (Print)}, doi = {10.1007/978-3-030-97913-3_29}, pages = {955 -- 996}, year = {2023}, abstract = {The exploration of icy environments in the solar system, such as the poles of Mars and the icy moons (a.k.a. ocean worlds), is a key aspect for understanding their astrobiological potential as well as for extraterrestrial resource inspection. On these worlds, ice melting probes are considered to be well suited for the robotic clean execution of such missions. In this chapter, we describe ice melting probes and their applications, the physics of ice melting and how the melting behavior can be modeled and simulated numerically, the challenges for ice melting, and the required key technologies to deal with those challenges. We also give an overview of existing ice melting probes and report some results and lessons learned from laboratory and field tests.}, language = {en} } @article{MoraisSumanSchoeningetal.2023, author = {Morais, Paulo V. and Suman, Pedro H. and Sch{\"o}ning, Michael Josef and Siqueira Junior, Jos{\´e} R. and Orlandi, Marcelo O.}, title = {Layer-by-layer film based on Sn₃O₄ nanobelts as sensing units to detect heavy metals using a capacitive field-effect sensor platform}, series = {Chemosensors}, volume = {11}, journal = {Chemosensors}, number = {8}, publisher = {MDPI}, address = {Basel}, issn = {2227-9040}, doi = {10.3390/chemosensors11080436}, pages = {Artikel 436}, year = {2023}, abstract = {Lead and nickel, as heavy metals, are still used in industrial processes, and are classified as "environmental health hazards" due to their toxicity and polluting potential. The detection of heavy metals can prevent environmental pollution at toxic levels that are critical to human health. In this sense, the electrolyte-insulator-semiconductor (EIS) field-effect sensor is an attractive sensing platform concerning the fabrication of reusable and robust sensors to detect such substances. This study is aimed to fabricate a sensing unit on an EIS device based on Sn₃O₄ nanobelts embedded in a polyelectrolyte matrix of polyvinylpyrrolidone (PVP) and polyacrylic acid (PAA) using the layer-by-layer (LbL) technique. The EIS-Sn₃O₄ sensor exhibited enhanced electrochemical performance for detecting Pb²⁺ and Ni²⁺ ions, revealing a higher affinity for Pb²⁺ ions, with sensitivities of ca. 25.8 mV/decade and 2.4 mV/decade, respectively. Such results indicate that Sn₃O₄ nanobelts can contemplate a feasible proof-of-concept capacitive field-effect sensor for heavy metal detection, envisaging other future studies focusing on environmental monitoring.}, language = {en} } @article{CollPeralesSchulteTiggesRondinoneetal.2022, author = {Coll-Perales, Baldomero and Schulte-Tigges, Joschua and Rondinone, Michele and Gozalvez, Javier and Reke, Michael and Matheis, Dominik and Walter, Thomas}, title = {Prototyping and evaluation of infrastructure-assisted transition of control for cooperative automated vehicles}, series = {IEEE Transactions on Intelligent Transportation Systems}, volume = {23}, journal = {IEEE Transactions on Intelligent Transportation Systems}, number = {7}, publisher = {IEEE}, issn = {1524-9050 (Print)}, doi = {10.1109/TITS.2021.3061085}, pages = {6720 -- 6736}, year = {2022}, abstract = {Automated driving is now possible in diverse road and traffic conditions. However, there are still situations that automated vehicles cannot handle safely and efficiently. In this case, a Transition of Control (ToC) is necessary so that the driver takes control of the driving. Executing a ToC requires the driver to get full situation awareness of the driving environment. If the driver fails to get back the control in a limited time, a Minimum Risk Maneuver (MRM) is executed to bring the vehicle into a safe state (e.g., decelerating to full stop). The execution of ToCs requires some time and can cause traffic disruption and safety risks that increase if several vehicles execute ToCs/MRMs at similar times and in the same area. This study proposes to use novel C-ITS traffic management measures where the infrastructure exploits V2X communications to assist Connected and Automated Vehicles (CAVs) in the execution of ToCs. The infrastructure can suggest a spatial distribution of ToCs, and inform vehicles of the locations where they could execute a safe stop in case of MRM. This paper reports the first field operational tests that validate the feasibility and quantify the benefits of the proposed infrastructure-assisted ToC and MRM management. The paper also presents the CAV and roadside infrastructure prototypes implemented and used in the trials. The conducted field trials demonstrate that infrastructure-assisted traffic management solutions can reduce safety risks and traffic disruptions.}, language = {en} } @inproceedings{SchulteTiggesMatheisRekeetal.2023, author = {Schulte-Tigges, Joschua and Matheis, Dominik and Reke, Michael and Walter, Thomas and Kaszner, Daniel}, title = {Demonstrating a V2X enabled system for transition of control and minimum risk manoeuvre when leaving the operational design domain}, series = {HCII 2023: HCI in Mobility, Transport, and Automotive Systems}, booktitle = {HCII 2023: HCI in Mobility, Transport, and Automotive Systems}, editor = {Kr{\"o}mker, Heidi}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-35677-3 (Print)}, doi = {10.1007/978-3-031-35678-0_12}, pages = {200 -- 210}, year = {2023}, abstract = {Modern implementations of driver assistance systems are evolving from a pure driver assistance to a independently acting automation system. Still these systems are not covering the full vehicle usage range, also called operational design domain, which require the human driver as fall-back mechanism. Transition of control and potential minimum risk manoeuvres are currently research topics and will bridge the gap until full autonomous vehicles are available. The authors showed in a demonstration that the transition of control mechanisms can be further improved by usage of communication technology. Receiving the incident type and position information by usage of standardised vehicle to everything (V2X) messages can improve the driver safety and comfort level. The connected and automated vehicle's software framework can take this information to plan areas where the driver should take back control by initiating a transition of control which can be followed by a minimum risk manoeuvre in case of an unresponsive driver. This transition of control has been implemented in a test vehicle and was presented to the public during the IEEE IV2022 (IEEE Intelligent Vehicle Symposium) in Aachen, Germany.}, language = {en} } @incollection{EggertMoulen2023, author = {Eggert, Mathias and Moulen, Tobias}, title = {Auswahl von Gesch{\"a}ftsprozessen zur Anwendung von Robotic Process Automation - Vergleich relevanter Kriterien aus Theorie und Praxis}, series = {Robotik in der Wirtschaftsinformatik}, booktitle = {Robotik in der Wirtschaftsinformatik}, editor = {D'Onofrio, Sara and Meinhardt, Stefan}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-39620-6 (Print)}, pages = {107 -- 129}, year = {2023}, abstract = {Die Auswahl der passenden Gesch{\"a}ftsprozesse f{\"u}r eine Automatisierung mittels Robotic Process Automation (RPA) ist f{\"u}r den Erfolg von RPA-Projekten entscheidend. Das vorliegende Kapitel liefert daf{\"u}r Selektionskriterien, die aus einer qualitativen Studie mit elf interviewten RPA-Experten aus dem Versicherungsumfeld resultieren. Das Ergebnis umfasst eine gewichtete Liste von sieben Dimensionen und 51 Prozesskriterien, welche die Automatisierung mit Softwarerobotern beg{\"u}nstigen beziehungsweise deren Nichterf{\"u}llung eine Umsetzung erschweren oder sogar verhindern. Die drei wichtigsten Kriterien zur Auswahl von Gesch{\"a}ftsprozessen f{\"u}r die Automatisierung mittels RPA umfassen die Entlastung der an dem Prozess mitwirkenden Mitarbeiter (Arbeitnehmerentlastung), die Ausf{\"u}hrbarkeit des Prozesses mittels Regeln (Regelbasierte Prozessteuerung) sowie ein positiver Kosten-Nutzen-Vergleich. Auf diesen Ergebnissen aufbauend wird ein Vergleich mit den bereits bekannten Selektionskriterien aus der Literatur erstellt und diskutiert. Praktiker k{\"o}nnen die Ergebnisse verwenden, um eine systematische Auswahl von RPA-relevanten Prozessen vorzunehmen. Aus wissenschaftlicher Perspektive stellen die Ergebnisse eine Grundlage zur Erkl{\"a}rung des Erfolgs und Misserfolgs von RPA-Projekten dar.}, language = {de} } @article{CheenakulaGriebelMontagetal.2023, author = {Cheenakula, Dheeraja and Griebel, Kai and Montag, David and Gr{\"o}mping, Markus}, title = {Concept development of a mainstream deammonification and comparison with conventional process in terms of energy, performance and economical construction perspectives}, series = {Frontiers in Microbiology}, volume = {14}, journal = {Frontiers in Microbiology}, number = {11155235}, editor = {Huang, Xiaowu}, publisher = {Frontiers}, issn = {1664-302X}, doi = {10.3389/fmicb.2023.1155235}, pages = {1 -- 15}, year = {2023}, abstract = {Deammonification for nitrogen removal in municipal wastewater in temperate and cold climate zones is currently limited to the side stream of municipal wastewater treatment plants (MWWTP). This study developed a conceptual model of a mainstream deammonification plant, designed for 30,000 P.E., considering possible solutions corresponding to the challenging mainstream conditions in Germany. In addition, the energy-saving potential, nitrogen elimination performance and construction-related costs of mainstream deammonification were compared to a conventional plant model, having a single-stage activated sludge process with upstream denitrification. The results revealed that an additional treatment step by combining chemical precipitation and ultra-fine screening is advantageous prior the mainstream deammonification. Hereby chemical oxygen demand (COD) can be reduced by 80\% so that the COD:N ratio can be reduced from 12 to 2.5. Laboratory experiments testing mainstream conditions of temperature (8-20°C), pH (6-9) and COD:N ratio (1-6) showed an achievable volumetric nitrogen removal rate (VNRR) of at least 50 gN/(m3∙d) for various deammonifying sludges from side stream deammonification systems in the state of North Rhine-Westphalia, Germany, where m3 denotes reactor volume. Assuming a retained Norganic content of 0.0035 kgNorg./(P.E.∙d) from the daily loads of N at carbon removal stage and a VNRR of 50 gN/(m3∙d) under mainstream conditions, a resident-specific reactor volume of 0.115 m3/(P.E.) is required for mainstream deammonification. This is in the same order of magnitude as the conventional activated sludge process, i.e., 0.173 m3/(P.E.) for an MWWTP of size class of 4. The conventional plant model yielded a total specific electricity demand of 35 kWh/(P.E.∙a) for the operation of the whole MWWTP and an energy recovery potential of 15.8 kWh/(P.E.∙a) through anaerobic digestion. In contrast, the developed mainstream deammonification model plant would require only a 21.5 kWh/(P.E.∙a) energy demand and result in 24 kWh/(P.E.∙a) energy recovery potential, enabling the mainstream deammonification model plant to be self-sufficient. The retrofitting costs for the implementation of mainstream deammonification in existing conventional MWWTPs are nearly negligible as the existing units like activated sludge reactors, aerators and monitoring technology are reusable. However, the mainstream deammonification must meet the performance requirement of VNRR of about 50 gN/(m3∙d) in this case.}, language = {en} } @article{TrappLammersEngudaretal.2023, author = {Trapp, Svenja and Lammers, Tom and Engudar, Gokce and Hoehr, Cornelia and Denkova, Antonia G. and Paulßen, Elisabeth and de Kruijff, Robin M.}, title = {Membrane-based microfluidic solvent extraction of Ga-68 from aqueous Zn solutions: towards an automated cyclotron production loop}, series = {EJNMMI Radiopharmacy and Chemistry}, volume = {2023}, journal = {EJNMMI Radiopharmacy and Chemistry}, number = {8, Article number: 9}, publisher = {Springer Nature}, issn = {2365-421X}, doi = {10.1186/s41181-023-00195-2}, pages = {1 -- 14}, year = {2023}, language = {en} } @inproceedings{UlmerBraunWollert2021, author = {Ulmer, Jessica and Braun, Sebastian and Wollert, J{\"o}rg}, title = {Adaptive VR-Produktionsumgebungen f{\"u}r Evaluations- und Schulungst{\"a}tigkeiten}, series = {Automation 2021: Navigating towards resilient Production}, booktitle = {Automation 2021: Navigating towards resilient Production}, publisher = {VDI}, address = {D{\"u}sseldorf}, isbn = {978-3-18-092392-5}, issn = {0083-5560}, doi = {10.51202/9783181023921-55}, pages = {55 -- 64}, year = {2021}, abstract = {Industrie 4.0 stellt viele Herausforderungen an produzierende Unternehmen und ihre Besch{\"a}f-tigten. Innovative und effektive Trainingsstrategien sind erforderlich, um mit den sich schnell ver{\"a}ndernden Produktionsumgebungen und neuen Fertigungstechnologien Schritt halten zu k{\"o}nnen. Virtual Reality (VR) bietet neue M{\"o}glichkeiten f{\"u}r On-the-Job, On-Demand- und Off-Premise-Schulungen. Diese Arbeit stellt ein neues VR Schulungssystem vor, welches sich flexible an unterschiedliche Trainingsobjekte auf Grundlage von Rezepten und CAD Modellen anpassen l{\"a}sst. Das Konzept basiert auf gerichteten azyklischen Graphen und einem Level-system. Es erm{\"o}glicht eine benutzerindividuelle Lerngeschwindigkeit mittels visueller Ele-mente. Das Konzept wurde f{\"u}r einen mechanischen Anwendungsfall mit Industriekomponen-ten implementiert und in der Industrie 4.0-Modellfabrik der FH Aachen umgesetzt.}, language = {de} } @inproceedings{UlmerMostafaWollert2022, author = {Ulmer, Jessica and Mostafa, Youssef and Wollert, J{\"o}rg}, title = {Digital Twin Academy: From Zero to Hero through individual learning experiences}, series = {Tagungsband AALE 2022: Wissenstransfer im Spannungsfeld von Autonomisierung und Fachkr{\"a}ftemangel}, booktitle = {Tagungsband AALE 2022: Wissenstransfer im Spannungsfeld von Autonomisierung und Fachkr{\"a}ftemangel}, isbn = {978-3-910103-00-9}, doi = {10.33968/2022.33}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:l189-qucosa2-776097}, pages = {1 -- 9}, year = {2022}, abstract = {Digital twins are seen as one of the key technologies of Industry 4.0. Although many research groups focus on digital twins and create meaningful outputs, the technology has not yet reached a broad application in the industry. The main reasons for this imbalance are the complexity of the topic, the lack of specialists, and the unawareness of the twin opportunities. The project "Digital Twin Academy" aims to overcome these barriers by focusing on three actions: Building a digital twin community for discussion and exchange, offering multi-stage training for various knowledge levels, and implementing realworld use cases for deeper insights and guidance. In this work, we focus on creating a flexible learning platform that allows the user to select a training path adjusted to personal knowledge and needs. Therefore, a mix of basic and advanced modules is created and expanded by individual feedback options. The usage of personas supports the selection of the appropriate modules.}, language = {en} } @inproceedings{ChavezBermudezCruzCastanonRuchayetal.2022, author = {Chavez Bermudez, Victor Francisco and Cruz Castanon, Victor Fernando and Ruchay, Marco and Wollert, J{\"o}rg}, title = {Rapid prototyping framework for automation applications based on IO-Link}, series = {Tagungsband AALE 2022: Wissenstransfer im Spannungsfeld von Autonomisierung und Fachkr{\"a}ftemangel}, booktitle = {Tagungsband AALE 2022: Wissenstransfer im Spannungsfeld von Autonomisierung und Fachkr{\"a}ftemangel}, editor = {Leipzig, Hochschule f{\"u}r Technik, Wirtschaft und Kultur}, address = {Leipzig}, isbn = {978-3-910103-00-9}, doi = {10.33968/2022.28}, pages = {8 Seiten}, year = {2022}, abstract = {The development of protype applications with sensors and actuators in the automation industry requires tools that are independent of manufacturer, and are flexible enough to be modified or extended for any specific requirements. Currently, developing prototypes with industrial sensors and actuators is not straightforward. First of all, the exchange of information depends on the industrial protocol that these devices have. Second, a specific configuration and installation is done based on the hardware that is used, such as automation controllers or industrial gateways. This means that the development for a specific industrial protocol, highly depends on the hardware and the software that vendors provide. In this work we propose a rapid-prototyping framework based on Arduino to solve this problem. For this project we have focused to work with the IO-Link protocol. The framework consists of an Arduino shield that acts as the physical layer, and a software that implements the IO-Link Master protocol. The main advantage of such framework is that an application with industrial devices can be rapid-prototyped with ease as its vendor independent, open-source and can be ported easily to other Arduino compatible boards. In comparison, a typical approach requires proprietary hardware, is not easy to port to another system and is closed-source.}, language = {en} } @article{ChengWollertChenetal.2023, author = {Cheng, Chi-Tsun and Wollert, J{\"o}rg and Chen, Xi and Fapojuwo, Abraham O.}, title = {Guest Editorial : Circuits and Systems for Industry X.0 Applications}, series = {IEEE Journal on Emerging and Selected Topics in Circuits and Systems}, volume = {13}, journal = {IEEE Journal on Emerging and Selected Topics in Circuits and Systems}, edition = {2}, publisher = {IEEE}, address = {New York}, issn = {2156-3357 (Print)}, doi = {10.1109/JETCAS.2023.3278843}, pages = {457 -- 460}, year = {2023}, language = {en} } @article{KuchlerGuenthnerRibeiroetal.2023, author = {Kuchler, Timon and G{\"u}nthner, Roman and Ribeiro, Andrea and Hausinger, Renate and Streese, Lukas and W{\"o}hnl, Anna and Kesseler, Veronika and Negele, Johanna and Assali, Tarek and Carbajo-Lozoya, Javier and Lech, Maciej and Adorjan, Kristina and Stubbe, Hans Christian and Hanssen, Henner and Kotliar, Konstantin and Haller, Berhard and Heemann, Uwe and Schmaderer, Christoph}, title = {Persistent endothelial dysfunction in post-COVID-19 syndrome and its associations with symptom severity and chronic inflammation}, volume = {26}, publisher = {Springer Nature}, address = {Dordrecht}, doi = {10.1007/s10456-023-09885-6}, pages = {547 -- 563}, year = {2023}, abstract = {Background Post-COVID-19 syndrome (PCS) is a lingering disease with ongoing symptoms such as fatigue and cognitive impairment resulting in a high impact on the daily life of patients. Understanding the pathophysiology of PCS is a public health priority, as it still poses a diagnostic and treatment challenge for physicians. Methods In this prospective observational cohort study, we analyzed the retinal microcirculation using Retinal Vessel Analysis (RVA) in a cohort of patients with PCS and compared it to an age- and gender-matched healthy cohort (n = 41, matched out of n = 204). Measurements and main results PCS patients exhibit persistent endothelial dysfunction (ED), as indicated by significantly lower venular flicker-induced dilation (vFID; 3.42\% ± 1.77\% vs. 4.64\% ± 2.59\%; p = 0.02), narrower central retinal artery equivalent (CRAE; 178.1 [167.5-190.2] vs. 189.1 [179.4-197.2], p = 0.01) and lower arteriolar-venular ratio (AVR; (0.84 [0.8-0.9] vs. 0.88 [0.8-0.9], p = 0.007). When combining AVR and vFID, predicted scores reached good ability to discriminate groups (area under the curve: 0.75). Higher PCS severity scores correlated with lower AVR (R = - 0.37 p = 0.017). The association of microvascular changes with PCS severity were amplified in PCS patients exhibiting higher levels of inflammatory parameters. Conclusion Our results demonstrate that prolonged endothelial dysfunction is a hallmark of PCS, and impairments of the microcirculation seem to explain ongoing symptoms in patients. As potential therapies for PCS emerge, RVA parameters may become relevant as clinical biomarkers for diagnosis and therapy management.}, language = {en} } @unpublished{GreinerJerominSitholeetal.2023, author = {Greiner, Lasse and Jeromin, G{\"u}nter Erich and Sithole, Patience and Petersen, Soenke}, title = {Preprint: Studies on the enzymatic reduction of levulinic acid using Chiralidon-R and Chiralidon-S}, series = {ChemRxiv}, journal = {ChemRxiv}, doi = {10.26434/chemrxiv-2023-jlvcv}, pages = {13 Seiten}, year = {2023}, abstract = {The enzymatic reduction of levulinic acid by the chiral catalysts Chiralidon-R and Chiralidon-S which are commercially available superabsorbed alcohol dehydrogenases is described. The Chiralidon®-R/S reduces the levulinic acid to the (R,S)-4-hydroxy valeric acid and the (R)- or (S)- gamma-valerolactone.}, language = {en} } @article{OhrtmannGolland2023, author = {Ohrtmann, Jan-Peter and Golland, Alexander}, title = {Datenschutz \& Datenrecht - ein Ausblick auf 2023: Gesetzgebungsverfahren auf EU-Ebene}, series = {DSB Datenschutz-Berater}, volume = {2023}, journal = {DSB Datenschutz-Berater}, number = {2}, publisher = {Fachmedien Recht und Wirtschaft}, address = {Frankfurt am Main}, pages = {43 -- 46}, year = {2023}, abstract = {Die Verfasser stellen in ihrem Beitrag die k{\"u}nftig in Kraft tretenden oder schon in Kraft getretenen Gesetzesvorhaben der europ{\"a}ischen Union vor. Vorab werde auf die abgelaufene Frist zur Anpassung von Standardvertragsklausel hingewiesen. Die Anpassung k{\"o}nne ggf. durch den Data Privacy Act der Kommission bewirkt werden, da dieser eine Angemessenheit suggeriere. Neben dem Digital Markets Act, der die Wahrung der Diskriminierungsfreiheit den Gatekeeper-Plattformen bez{\"u}glich der Bewerbung von Waren Dritter vorschreibt, sind ebenfalls der Digital Service Act und der Data Governance Act in Kraft getreten und werden k{\"u}nftig wirksam. Letzteres bezweckt den Datenaustausch von nicht-personenbezogenen Daten {\"o}ffentlich-rechtlicher Datens{\"a}tze, wobei anders als bei DSA, der die Verbraucherrechte durchsetzen m{\"o}chte, mangels Verpflichtung die praktische Umsetzung ausbleiben werde. In der Entwurfsphase stecken der Artificial Intelligence Act, der Data Act, sowie der Cyber Resilience Act. Allen drei sei wegen dem weiten Anwendungsspielraum, der Bußgeldandrohung oder der Cyber-Bedrohungslage besondere praktische Relevanz beizumessen. Die Kommission weite durch diese Gesetzesvorhaben ihre Regelungsabsicht auch auf nicht-personenbezogene Daten und dem Datentransfer aus. Im Ergebnis werden die Unternehmen mit mehr Verpflichtungen konfrontiert, zu dessen Umsetzung ein funktionierendes Compliance-Management-System unabdingbar sei.}, language = {de} } @article{OhrtmannGolland2023, author = {Ohrtmann, Jan-Peter and Golland, Alexander}, title = {Datenschutz \& Datenrecht - ein Ausblick auf 2023: Nationale Entwicklungen, EuGH-Vorlagen \& Aufsicht}, series = {DSB Datenschutz-Berater}, volume = {2023}, journal = {DSB Datenschutz-Berater}, number = {3}, publisher = {DFV Mediengruppe}, address = {Frankfurt a.M.}, pages = {73 -- 75}, year = {2023}, abstract = {Die Verfasser vermitteln einen {\"U}berblick {\"u}ber die nationalen Gesetzgebungsverfahren und wesentliche EuGH-Vorlagefragen betreffend den Datenschutz und das Datenrecht f{\"u}r das Jahr 2023. Zun{\"a}chst folgen u.a. Hinweise in Bezug auf den Hinweisgeberschutz, die Verabschiedung der Einwilligungsverwaltungs-Verordnung zur Konkretisierung des \S 26 TTDSG und das Mobilit{\"a}tsdatengesetz. Anschließend werden Vorlagefragen deutscher Gerichte, die dem EuGH vorgelegt und bereits am 12.01.2023 beantwortet wurden, wie etwa C-154/21 und C-132/21 und die EuGH-Entscheidung vom 9.2.2023 (C-453/21), thematisiert. {\"U}berdies f{\"u}hren die Autoren wesentliche Entscheidungen des EuGH an, die im Jahr 2023 aus dem Bereich Datenrecht und Datenschutz zu erwarten seien. Auch Aktivit{\"a}ten der Datenschutzaufsicht auf nationaler und europ{\"a}ischer Ebene finden Erw{\"a}hnung. Die Verfasser machen abschließend auf besonders interessante Entscheidungen, die 2023 erwartet werden, wie etwa das EuGH-Urteil zum Auskunftsanspruch, sowie auf das Verh{\"a}ltnis des der Whistleblowing-RL umzusetzende Hinweisgeberschutzgesetz einerseits und Vorgaben des Datenschutzes andererseits, aufmerksam. Sie empfehlen, die k{\"u}nftige Rechtsprechung des EuGH im Blick zu behalten.}, language = {de} } @misc{Golland2023, author = {Golland, Alexander}, title = {Formelle DSGVO-Verst{\"o}ße wirken sich nicht auf Rechtm{\"a}ßigkeit der Verarbeitung aus}, series = {DSB Datenschutz-Berater}, journal = {DSB Datenschutz-Berater}, publisher = {DFV Mediengruppe}, address = {Frankfurt a.M.}, pages = {178 -- 180}, year = {2023}, abstract = {In dem vorliegenden Beitrag setzt sich der Verfasser mit dem Urteil des EuGH vom 4.5.2023 (Az.: C-60/22, DSB 2023, 178) zu den Auswirkungen eines formellen Verstoßes des Verantwortlichen gegen die Pflichten aus Artt. 26, 30 DSGVO (juris: EUV 2016/679) auf die Rechtm{\"a}ßigkeit der Datenverarbeitung auseinander. Nachdem zun{\"a}chst der zugrunde liegende Sachverhalt und der Hintergrund des Vorlageverfahrens skizziert wurden, gibt der Verfasser einen {\"U}berblick {\"u}ber die wesentlichen Entscheidungsgr{\"u}nde des EuGH. Insbesondere stelle der EuGH hier fest, dass die Rechtm{\"a}ßigkeit der Verarbeitung in Art. 6 DSGVO geregelt sei und sich eine rechtswidrige Verarbeitung daher nur aus einem Verstoß gegen die Artt. 6 ff. DSGVO ergeben k{\"o}nne; die Pflichten aus Art. 26 und Art. 30 DSGVO w{\"u}rden nicht zu den Gr{\"u}nden f{\"u}r die Rechtm{\"a}ßigkeit der Verarbeitung z{\"a}hlen. Mit Blick auf die Praxis lasse sich, so der Verfasser abschließend, festhalten, dass die Entscheidung insofern nicht {\"u}berraschend sei; jedoch sei die Feststellung, dass sich aus Verst{\"o}ßen gegen Art. 26 und Art. 30 DSGVO kein Verstoß gegen das Grundrecht auf den Schutz personenbezogener Daten nachweisen lasse {\"u}berraschend und bedenklich. Auch {\"u}berrasche es, dass der EuGH eher in einem Nebensatz feststelle, dass der Verantwortliche im Prozess aufgrund seiner Rechenschaftspflicht gegen{\"u}ber Betroffenen beweisbelastet ist; ob sich die Kammer hier der m{\"o}glichen Auswirkungen ihrer Ausf{\"u}hrungen bewusst gewesen sei, bleibe fraglich.}, language = {de} } @article{Golland2023, author = {Golland, Alexander}, title = {Immaterieller Schadensersatz bei Datenschutzverst{\"o}ßen - EuGH tariert aus}, series = {NWB - Steuer- und Wirtschaftsrecht}, volume = {2023}, journal = {NWB - Steuer- und Wirtschaftsrecht}, number = {26}, publisher = {NWB Verlag}, address = {Herne}, issn = {0028-3460}, pages = {1845 -- 1845}, year = {2023}, abstract = {Umsatzbasierte Bußgelder - wie sonst nur aus dem Kartellrecht bekannt - waren einer der Gr{\"u}nde, warum die Datenschutz-Grundverordnung (DSGVO) vor ihrem Inkrafttreten f{\"u}r erhebliches Aufsehen sorgte. Die vielfach relevanteren Schadensersatzanspr{\"u}che, die, wie bei „Dieselgate", aufgrund der Vielzahl von betroffenen Personen und der aus Sicht von Rechtsdienstleistern bestehenden Skalierbarkeit mit weitaus h{\"o}heren Einbußen f{\"u}r Unternehmen einhergehen k{\"o}nnen, blieben zun{\"a}chst unbeachtet. Inzwischen ist der Schadensersatzanspruch gem. Art. 82 DSGVO die Vorschrift, die die meisten Vorlagen zum Europ{\"a}ischen Gerichtshof (EuGH) der letzten Jahre hervorgerufen hat. Am 4.5.2023 hat nun der EuGH (Urteil v. 4.5.2023 - Rs. C-300/21, NWB GAAAJ-41389) in einem Grundsatzurteil {\"u}ber zentrale Fragen rund um den Ersatz immaterieller Sch{\"a}den als Folge von Datenschutzverst{\"o}ßen entschieden.}, language = {de} } @inproceedings{KloeserBuesgenKohletal.2023, author = {Kl{\"o}ser, Lars and B{\"u}sgen, Andr{\´e} and Kohl, Philipp and Kraft, Bodo and Z{\"u}ndorf, Albert}, title = {Explaining relation classification models with semantic extents}, series = {Deep Learning Theory and Applications}, booktitle = {Deep Learning Theory and Applications}, editor = {Conte, Donatello and Fred, Ana and Gusikhin, Oleg and Sansone, Carlo}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-39058-6 (Print)}, doi = {10.1007/978-3-031-39059-3_13}, pages = {189 -- 208}, year = {2023}, abstract = {In recent years, the development of large pretrained language models, such as BERT and GPT, significantly improved information extraction systems on various tasks, including relation classification. State-of-the-art systems are highly accurate on scientific benchmarks. A lack of explainability is currently a complicating factor in many real-world applications. Comprehensible systems are necessary to prevent biased, counterintuitive, or harmful decisions. We introduce semantic extents, a concept to analyze decision patterns for the relation classification task. Semantic extents are the most influential parts of texts concerning classification decisions. Our definition allows similar procedures to determine semantic extents for humans and models. We provide an annotation tool and a software framework to determine semantic extents for humans and models conveniently and reproducibly. Comparing both reveals that models tend to learn shortcut patterns from data. These patterns are hard to detect with current interpretability methods, such as input reductions. Our approach can help detect and eliminate spurious decision patterns during model development. Semantic extents can increase the reliability and security of natural language processing systems. Semantic extents are an essential step in enabling applications in critical areas like healthcare or finance. Moreover, our work opens new research directions for developing methods to explain deep learning models.}, language = {en} } @inproceedings{FreyerThewesMeinecke2023, author = {Freyer, Nils and Thewes, Dustin and Meinecke, Matthias}, title = {GUIDO: a hybrid approach to guideline discovery \& ordering from natural language texts}, series = {Proceedings of the 12th International Conference on Data Science, Technology and Applications DATA - Volume 1}, booktitle = {Proceedings of the 12th International Conference on Data Science, Technology and Applications DATA - Volume 1}, editor = {Gusikhin, Oleg and Hammoudi, Slimane and Cuzzocrea, Alfredo}, isbn = {978-989-758-664-4}, issn = {2184-285X}, doi = {10.5220/0012084400003541}, pages = {335 -- 342}, year = {2023}, abstract = {Extracting workflow nets from textual descriptions can be used to simplify guidelines or formalize textual descriptions of formal processes like business processes and algorithms. The task of manually extracting processes, however, requires domain expertise and effort. While automatic process model extraction is desirable, annotating texts with formalized process models is expensive. Therefore, there are only a few machine-learning-based extraction approaches. Rule-based approaches, in turn, require domain specificity to work well and can rarely distinguish relevant and irrelevant information in textual descriptions. In this paper, we present GUIDO, a hybrid approach to the process model extraction task that first, classifies sentences regarding their relevance to the process model, using a BERT-based sentence classifier, and second, extracts a process model from the sentences classified as relevant, using dependency parsing. The presented approach achieves significantly better resul ts than a pure rule-based approach. GUIDO achieves an average behavioral similarity score of 0.93. Still, in comparison to purely machine-learning-based approaches, the annotation costs stay low.}, language = {en} } @article{KemptFreyerNagel2022, author = {Kempt, Hendrik and Freyer, Nils and Nagel, Saskia K.}, title = {Justice and the normative standards of explainability in healthcare}, series = {Philosophy \& Technology}, volume = {35}, journal = {Philosophy \& Technology}, number = {Article number: 100}, publisher = {Springer Nature}, address = {Berlin}, doi = {10.1007/s13347-022-00598-0}, pages = {1 -- 19}, year = {2022}, abstract = {Providing healthcare services frequently involves cognitively demanding tasks, including diagnoses and analyses as well as complex decisions about treatments and therapy. From a global perspective, ethically significant inequalities exist between regions where the expert knowledge required for these tasks is scarce or abundant. One possible strategy to diminish such inequalities and increase healthcare opportunities in expert-scarce settings is to provide healthcare solutions involving digital technologies that do not necessarily require the presence of a human expert, e.g., in the form of artificial intelligent decision-support systems (AI-DSS). Such algorithmic decision-making, however, is mostly developed in resource- and expert-abundant settings to support healthcare experts in their work. As a practical consequence, the normative standards and requirements for such algorithmic decision-making in healthcare require the technology to be at least as explainable as the decisions made by the experts themselves. The goal of providing healthcare in settings where resources and expertise are scarce might come with a normative pull to lower the normative standards of using digital technologies in order to provide at least some healthcare in the first place. We scrutinize this tendency to lower standards in particular settings from a normative perspective, distinguish between different types of absolute and relative, local and global standards of explainability, and conclude by defending an ambitious and practicable standard of local relative explainability.}, language = {en} } @inproceedings{NikolovskiLimpertNessauetal.2023, author = {Nikolovski, Gjorgji and Limpert, Nicolas and Nessau, Hendrik and Reke, Michael and Ferrein, Alexander}, title = {Model-predictive control with parallelised optimisation for the navigation of autonomous mining vehicles}, series = {2023 IEEE Intelligent Vehicles Symposium (IV)}, booktitle = {2023 IEEE Intelligent Vehicles Symposium (IV)}, publisher = {IEEE}, isbn = {979-8-3503-4691-6 (Online)}, doi = {10.1109/IV55152.2023.10186806}, pages = {6 Seiten}, year = {2023}, abstract = {The work in modern open-pit and underground mines requires the transportation of large amounts of resources between fixed points. The navigation to these fixed points is a repetitive task that can be automated. The challenge in automating the navigation of vehicles commonly used in mines is the systemic properties of such vehicles. Many mining vehicles, such as the one we have used in the research for this paper, use steering systems with an articulated joint bending the vehicle's drive axis to change its course and a hydraulic drive system to actuate axial drive components or the movements of tippers if available. To address the difficulties of controlling such a vehicle, we present a model-predictive approach for controlling the vehicle. While the control optimisation based on a parallel error minimisation of the predicted state has already been established in the past, we provide insight into the design and implementation of an MPC for an articulated mining vehicle and show the results of real-world experiments in an open-pit mine environment.}, language = {en} }