TY - CHAP
AU - Hesse, Philipp
AU - Gräßler, Iris
ED - Horwath, Ilona
ED - Schweizer, Swetlana
ID - 46796
T2 - Climate Protection, Resource Efficiency, and Sustainable Engineering: Transdisciplinary Approaches to Design and Manufacturing technology.
TI - Interdependency study of design guidelines
ER -
TY - CHAP
AU - Hesse, Philipp
AU - Gräßler, Iris
ED - Horwath, Ilona
ED - Schweizer, Swetlana
ID - 46792
T2 - Climate Protection, Resource Efficiency, and Sustainable Engineering: Transdisciplinary Approaches to Design and Manufacturing technology.
TI - Sustainable product life cycle
ER -
TY - GEN
AU - Gräßler, Iris
AU - Ovtcharova, Jivka
AU - Dattner, Michael
AU - Dietert, Tilko
AU - Dietz, Patrick
AU - Elstermann, Matthes
AU - Fayet, Celestin
AU - Hauck, Andreas
AU - Häuser, Frank
AU - Fischer, Holger
AU - Herzog, Michael
AU - Köhler, Christian
AU - Lachenmaier, Jens
AU - Lachmayer, Roland
AU - Meussen, Bernhard
AU - Mozgova, Iryna
AU - Möser, Sebastian
AU - Pottebaum, Jens
AU - Schluse, Michael
AU - Schneider, Jannik
AU - Stetter, Ralf
AU - Thurnes, Christian
AU - Tusek, Alena Marie
AU - Wurst, Johanna
ID - 46501
TI - Begriffe der strategischen Produktplanung und -entwicklung. Produkt und hybride Leistung
ER -
TY - JOUR
AU - Gilbert, H.
AU - Schürmann, M.
AU - Liebendörfer, M.
AU - Lawson, D.
AU - Hodds, M.
ID - 52806
JF - International Journal of Mathematical Education in Science and Technology
KW - Applied Mathematics
KW - Education
KW - Mathematics (miscellaneous)
SN - 0020-739X
TI - Post-pandemic online mathematics and statistics support: Practitioners’ opinions in Germany and Great Britain & Ireland
ER -
TY - CHAP
AU - Biehler, Rolf
AU - Guntermann, Dominik
AU - Liebendörfer, Michael
AU - Krämer, Sandra
AU - Schlüter, Sarah
ED - Goethe-Universität Frankfur, IDMI-Primar
ID - 52811
SN - 978-3-95987-208-9
T2 - Beiträge zum Mathematikunterricht 2022. 56. Jahrestagung der Gesellschaft für Didaktik der Mathematik
TI - Fachdidaktisches Design von Begründungsvideos im Projekt studiVEMINTvideos
VL - 1
ER -
TY - CHAP
AU - Göller, Robin
AU - Gildehaus, Lara
AU - Liebendörfer, Michael
AU - Besser, Michael
ED - Härterich, Jörg
ED - Kallweit, Michael
ED - Rolka, Katrin
ED - Skill, Thomas
ID - 52810
SN - 978-3-95987-264-5
T2 - Hanse-Kolloquium zur Hochschuldidaktik der Mathematik 2021. Beiträge zum gleichnamigen Online-Symposium am 12 November 2021 aus Bochum
TI - Erfassung und Vergleich (mathematischer) Eingangsvoraussetzungen angehender Studierender verschiedener mathematikhaltiger Studiengänge
ER -
TY - CHAP
AU - Kempen, Leander
AU - Liebendörfer, Michael
ED - Härterich, Jörg
ED - Kallweit, Michael
ED - Rolka, Katrin
ED - Skill, Thomas
ID - 52809
SN - 978-3-95987-264-5
T2 - Hanse-Kolloquium zur Hochschuldidaktik der Mathematik 2021. Beiträge zum gleichnamigen Online-Symposium am 12 November 2021 aus Bochum
TI - Zu digital - zu viel - zu schwer? Qualitative Einsichten in das Erleben und Handeln von Erstsemester-Studierenden der Mathematik während der Corona-Pandemie
ER -
TY - CHAP
AU - Schlüter, Sarah
AU - Liebendörfer, Michael
ED - Goethe-Universität Frankfur, IDMI-Primar
ID - 52813
SN - 978-3-95987-208-9
T2 - Beiträge zum Mathematikunterricht 2022. 56. Jahrestagung der Gesellschaft für Didaktik der Mathematik
TI - Bearbeitungsmuster von Studierenden im Umgang mit formalen Definitionen im Kontext konstanter Folgen
VL - 2
ER -
TY - CHAP
AU - Krämer, Sandra
AU - Liebendörfer, Michael
ED - Goethe-Universität Frankfur, IDMI-Primar
ID - 52812
SN - 978-3-95987-208-9
T2 - Beiträge zum Mathematikunterricht 2022. 56. Jahrestagung der Gesellschaft für Didaktik der Mathematik
TI - Förderung prozeduraler Flexibilität durch Lernvideos mit interaktiven Aufgaben
VL - 2
ER -
TY - JOUR
AB - Many preservice mathematics teachers lose their motivation during their first year at university. This phenomenon has been repeatedly described in recent years but is not yet fully understood. Since motivation may relate to different objects such as mathematics or teaching, we aim to qualitatively reconstruct different facets of the central motivational constructs of Situated-Expectancy-Value theory (intrinsic value, attainment value, utility value, cost, and expectancy of success) for preservice mathematics teachers. The analysis of longitudinal group interviews of 14 preservice higher-secondary mathematic teachers from a German university revealed different objects of motivation (e.g., teaching mathematics, scientific mathematics, procedural mathematics, or proof-based mathematics) in preservice teachers' values and expectancy of success. Furthermore, relations between those values and expectancy of success were identified that played a significant role in preservice teachers’ motivational development over their first semester (e.g., relations of attainment value for scientific mathematics and psychological cost). Theoretical and practical implications towards a teaching-specific conceptualization of expectancy of success and values and value interventions are being discussed.
ID - 52807
TI - Preservice teachers’ mathematics-related values and expectancy in the transition from school to university
ER -
TY - CONF
AU - Uhe, Benedikt
AU - Kuball, Clara-Maria
AU - Merklein, Marion
AU - Meschut, Gerson
ID - 44220
TI - Approach for a sustainable process chain in manufacturing of fasteners for mechanical joining
ER -
TY - JOUR
AU - Trienens, Dorte
AU - Schöppner, Volker
AU - Bunse, Robin
ID - 48659
JF - Polymers 2023
TI - Determination of Correlations between Melt Quality and the Screw Performance Index in the Extrusion Process
ER -
TY - JOUR
AU - Schöppner, Volker
AU - Kleinschmidt, Dennis
ID - 48737
JF - SPE Polymers
TI - Improvement of a method for the correction of wall slip effects within the rheological measurements of filled rubber compounds
ER -
TY - CONF
AU - Gräßler, Iris
AU - Hieb, Michael
AU - Roesmann, Daniel
AU - Unverzagt, Marc
ED - Lohweg, Volker
ID - 34395
TI - Creating Synthetic Training Data for Machine Vision Quality Gates
ER -
TY - CONF
AB - Monitoring force-displacement or force-time curves is a widely used quality control technique in the field of mechanical joining. For online monitoring of self-piercing riveting, envelope curves are often used to define a tolerance zone for the measured setting force. However, the measurement uncertainty is typically not considered and the force curve of a joint can be wrongly rated as non-conform due to measurement errors and noise. In this article, we present a method for dynamical online filtering and uncertainty determination for noisy force curves using two types of Bayesian filters. The methodology is based on a Bayesian probability framework using a priori information for the process curve and sensor noise. To investigate the general feasibility of the method, force measurements with different noise levels are simulated and processed. The conformity is further assessed taking the uncertainty of the filtered signal into account. The results show that the Bayes filter technique is principally able to reduce noise for well-known characteristics of the process curve and sensor noise. Advantages over common filtering techniques, especially for experimental conditions with less known characteristics, are still to be verified. The methodology could be used in future for closed-loop controls to adapt process parameters dynamically.
AU - Butzhammer, Lorenz
AU - Kappe, Fabian
AU - Meschut, Gerson
AU - Hausotte, Tino
ID - 52831
SN - 2474-395X
T2 - Materials Research Proceedings
TI - Dynamic conformity assessment for joining force monitoring using Bayes filters
ER -
TY - CONF
AU - Gräßler, Iris
AU - Hieb, Michael
ID - 46974
TI - Creating Synthetic Datasets for Deep Learning used in Machine Vision
ER -
TY - CONF
AB - AbstractTo select design guidelines engineers have to identify relevant from a bewildering amount of design guidelines. In this paper, a rule-based method for selecting design guidelines for material circularity selection is presented. For this purpose, a generic Product Life Cycle model is detailed with regard to Multi Material cycles (gPLC-MM). The presented method is divided into four steps. Core of the presented method is the comparison of circular product strategies with product life phases and material recovery processes. Engineering activities and increments of the product architecture are used to identify design guidelines. The results show that through the material circularity-oriented design guideline identification method, the product architecture is designed for different processes and technologies, to recover materials. The method allows engineers to select guidelines in a more targeted and consolidated way in sustainability-friendly product engineering.
AU - Gräßler, Iris
AU - Hesse, Philipp
ID - 46219
KW - Sustainability
KW - Circular economy
KW - Conceptual design
SN - 2732-527X
T2 - Proceedings of the Design Society
TI - CONSIDERING ENGINEERING ACTIVITIES AND PRODUCT CHARACTERISTICS TO ACHIEVE MATERIAL CIRCULARITY BY DESIGN
VL - 3
ER -
TY - CONF
AB - The involvement of human workers is an essential part of the design of production systems. In this
context, test scenarios in Virtual Reality are increasingly used to verify the fulfillment of requirements.
This paper proposes a procedure for generating virtual test scenarios. The objective is to support human-
centered design by means of virtual measurement systems. The procedure involves three steps:
selecting relevant human factors in requirements, modeling the virtual test scenario, and carrying out
the verification study. The goal is to advance the significance of testing outputs.
AU - Gräßler, Iris
AU - Roesmann, Daniel
AU - Unverzagt, Marc
AU - Pottebaum, Jens
ID - 52823
KW - virtual reality
KW - virtual measurement systems
KW - virtual test scenario
KW - human-centered design
T2 - Poster
TI - Virtual Test Scenarios for Human-Centered Design with Virtual Measurement Systems
ER -
TY - CONF
AU - Gräßler, Iris
AU - Hieb, Michael
AU - Roesmann, Daniel
AU - Unverzagt, Marc
AU - Pottebaum, Jens
ID - 52839
KW - General Earth and Planetary Sciences
KW - General Environmental Science
SN - 1556-5068
T2 - SSRN Electronic Journal
TI - Virtual learning environment for teaching the handling of collaborative robots
ER -
TY - CONF
AU - Gräßler, Iris
AU - Hieb, Michael
ID - 46973
T2 - Automation 2023
TI - Cloud-Computing für die Verwendung synthetischer Trainingsdaten für Machine Vision Quality Gates
VL - 2419
ER -
TY - JOUR
AU - Brüning, Florian
AU - Kleinschmidt, Dennis
AU - Petzke, J.
ID - 52828
JF - Polymers
SN - https://doi.org/10.3390/polym15224406
TI - Wall Slip-Free Viscosity Determination of Filled Rubber Compounds Using Steady-State Shear Measurements
ER -
TY - JOUR
AU - Schöppner, Volker
AU - Austermeier, Laura
AU - Brüning, Florian
AU - Oldemeier, Jan Philipp
AU - Brandt, O.
ID - 52833
IS - 8/2023
JF - EXTRUSION
SN - 2190-4774
TI - Recycling-Ansatz für mehrkomponentige Kunststoffprodukte durch thermische Verbundtrennung
ER -
TY - CONF
AU - Schöppner, Volker
AU - Arndt, Theresa
ID - 52840
T2 - 76th Annual Assembly of the International Institute of Welding (IIW)
TI - Anvil-free ultrasonic welding for welding situations with one sided access
ER -
TY - JOUR
AU - Brüning, Florian
AU - Kleinschmidt, Dennis
AU - Petzke, J.
ID - 52836
IS - 03/2023
JF - Kunststoffland NRW Report
TI - Elastomerrecycling mittels Mikrowellenstrahlung
ER -
TY - JOUR
AU - Moritzer, Elmar
AU - Kartelmeyer, S.
AU - Kringe, R.
AU - Jaroschek, C.
ID - 52837
IS - 8/2023
JF - Plastics Insights
TI - Conformal Cooling at Low Cost
ER -
TY - CONF
AB - Manufacturing companies face the challenge of reaching required quality standards. Using
optical sensors and deep learning might help. However, training deep learning algorithms
require large amounts of visual training data. Using domain randomization to generate synthetic
image data can alleviate this bottleneck. This paper presents the application of synthetic
image training data for optical quality inspections using visual sensor technology. The results
show synthetically generated training data are appropriate for visual quality inspections.
AU - Gräßler, Iris
AU - Hieb, Michael
ID - 52816
KW - synthetic training data
KW - machine vision quality gates
KW - deep learning
KW - automated inspection and quality control
KW - production control
T2 - Lectures
TI - Creating Synthetic Training Datasets for Inspection in Machine Vision Quality Gates in Manufacturing
ER -
TY - CONF
AU - Gräßler, Iris
AU - Preuß, Daniel
AU - Brandt, Lukas
AU - Mohr, Michael
ID - 46450
T2 - Proceedings of the Design Society
TI - Efficient Formalisation of Technical Requirements for Generative Engineering
ER -
TY - CONF
AB - Due to economic and ecological framework conditions, a resource-saving utilization of raw materials and energy is becoming increasingly important in particular in the mobility sector. For the reduction of moving masses and the resources consumed, lightweight construction technologies are part of modern production processes in vehicle manufacturing, for example in the form of multi-material systems. Challenging in the manufacture of multi-material systems especially in view of changing supply chains is the variety of materials and geometries that bring conventional joining processes to their limits. Therefore, new processes are required, which can react versatile to process and disturbance variables. A widely used industrial joining process is semi-tubular self-piercing riveting, which is however a rigid process. To increase the versatility, the two newly established processes multi-range self-piercing riveting and tumbling self-piercing riveting are combined and the capabilities for targeted material flow control are united. Therefore, an innovative two-stage process based on the combination is introduced in this paper. The rivet is set with the multi-range self-piercing riveting process with an overlap of the rivet head and then formed by a tumbling process. Further, a specific adaptation of the tumbling strategy is used to investigate the possibility of reducing cracks in the rivet head. Thereby, different tumbling strategies are used and similar geometric joint formations are achieved to compare the results.
AU - Wituschek, Simon
AU - Kappe, Fabian
AU - Meschut, Gerson
AU - Lechner, Michael
ID - 52821
SN - 2474-395X
T2 - Materials Research Proceedings
TI - Combination of versatile self-piercing riveting processes
ER -
TY - CHAP
AU - de Camargo e Souza Câmara, Igor
AU - Turhan, Anni-Yasmin
ID - 52859
SN - 0302-9743
T2 - Logics in Artificial Intelligence
TI - Deciding Subsumption in Defeasible $$\mathcal {ELI}_\bot $$ with Typicality Models
ER -
TY - JOUR
AU - Gil, Oliver Fernández
AU - Patrizi, Fabio
AU - Perelli, Giuseppe
AU - Turhan, Anni-Yasmin
ID - 52861
JF - CoRR
TI - Optimal Alignment of Temporal Knowledge Bases
VL - abs/2307.15439
ER -
TY - THES
AB - The importance of fiber-reinforced plastics for lightweight construction applications is steadily increasing due to their outstanding weight-specific property values. However, a decisive disadvantage of these composite materials has so far been the high material and process costs, which is why fiber-reinforced plastics are almost exclusively used in small to medium-sized series. Optimization of manufacturing methods is of great importance to reduce the production cost. In this study, two concepts are proposed that can optimize vacuum assisted light resin transfer molding (VA-LRTM) further, leading to a possibility of fully automatic process. Conventional VA-LRTM methods are used to produce complex fiber-reinforced plastics (FRP) and hybrid components. Traditional molds used to produce components via VA-LRTM are sealed using polymer materials to prevent the leakage of matrix system. The seals undergo tremendous amounts of thermal, chemical, and mechanical loadings. Thus, sealings must be replaced in short intervals. In the current study, a concept where sealing is achieved by accelerating the curing of matrix system itself with the help of heating elements and catalysts resulting in a self-sealing approach is proposed. Another concern is mold surface contamination during component production. To address this, a modified automatic cleaning technique based on ultrasonic cleaning was proposed which can be integrated into the production line with minimum modification. Both the proposed concepts were validated and optimized using experiments, simulations, and analytical approaches by producing metal-FRP hybrid shafts.
AU - Chalicheemalapalli Jayasankar, Deviprasad
ID - 50449
KW - fiber-reinforced plastics
KW - resin transfer molding
KW - composites
TI - Advances In RTM Manufacturing Of Metal-FRP Hybrids By Self-Sealing And In-Mold Cleaning Techniques
ER -
TY - GEN
AU - Chalicheemalapalli Jayasankar, Deviprasad
AU - Stallmeister, Tim
AU - Lückenkötter, Julian
AU - Tröster, Thomas
ID - 45831
KW - Compression Molding
KW - Glass Mat Thermoplastics
KW - Hybrid Brake Pedal
TI - In-Mold Assembly of Hybrid GMT-Steel Brake Pedals by Compression Molding
ER -
TY - CONF
AU - Sloane, Hannah Sabrina
AU - Schmöckel, Sabrina
ID - 52866
TI - Turning Disciplinary Differences from a Brake into a Motor in Higher Education (Collaboration)
ER -
TY - JOUR
AB - In virtual reality (VR), participants may not always have hands, bodies, eyes, or even voices—using VR helmets and two controllers, participants control an avatar through virtual worlds that do not necessarily obey familiar laws of physics; moreover, the avatar’s bodily characteristics may not neatly match our bodies in the physical world. Despite these limitations and specificities, humans get things done through collaboration and the creative use of the environment. While multiuser interactive VR is attracting greater numbers of participants, there are currently few attempts to analyze the in situ interaction systematically. This paper proposes a video-analytic detail-oriented methodological framework for studying virtual reality interaction. Using multimodal conversation analysis, the paper investigates a nonverbal, embodied, two-person interaction: two players in a survival game strive to gesturally resolve a misunderstanding regarding an in-game mechanic—however, both of their microphones are turned off for the duration of play. The players’ inability to resort to complex language to resolve this issue results in a dense sequence of back-and-forth activity involving gestures, object manipulation, gaze, and body work. Most crucially, timing and modified repetitions of previously produced actions turn out to be the key to overcome both technical and communicative challenges. The paper analyzes these action sequences, demonstrates how they generate intended outcomes, and proposes a vocabulary to speak about these types of interaction more generally. The findings demonstrate the viability of multimodal analysis of VR interaction, shed light on unique challenges of analyzing interaction in virtual reality, and generate broader methodological insights about the study of nonverbal action.
AU - Klowait, Nils
ID - 43437
JF - Human Behavior and Emerging Technologies
KW - Human-Computer Interaction
KW - General Social Sciences
KW - Social Psychology
KW - Virtual Reality : Multimodality
KW - Nonverbal Interaction
KW - Search Sequence
KW - Gesture
KW - Co-Operative Action
KW - Goodwin
KW - Ethnomethodology
SN - 2578-1863
TI - On the Multimodal Resolution of a Search Sequence in Virtual Reality
VL - 2023
ER -
TY - JOUR
AB - We investigate how people with atypical bodily capabilities interact within virtual reality (VR) and the way they overcome interactional challenges in these emerging social environments. Based on a videographic multimodal single case analysis, we demonstrate how non-speaking VR participants furnish their bodies, at-hand instruments, and their interactive environment for their practical purposes. Our findings are subsequently related to renewed discussions of the relationship between agency and environment, and the co-constructed nature of situated action. We thus aim to contribute to the growing vocabulary of atypical interaction analysis and the broader context of ethnomethodological conceptualizations of unorthodox and fractured interactional ecologies.
AU - Klowait, Nils
AU - Erofeeva, Maria
ID - 45599
IS - 1
JF - Social Interaction. Video-Based Studies of Human Sociality
KW - General Medicine
SN - 2446-3620
TI - Halting the Decay of Talk
VL - 6
ER -
TY - CONF
AU - Ŝkvorc, Urban
AU - Eftimov, Tome
AU - Koro]ec, Peter
ID - 52863
T2 - 2023 IEEE Symposium Series on Computational Intelligence (SSCI)
TI - Analyzing the Generalizability of Automated Algorithm Selection: A Case Study for Numerical Optimization
ER -
TY - CONF
AU - Dellori, Anna
AU - Wessel, Lena
ED - Drijvers, Paul
ED - Palmér, H
ED - Gosztonyi, K
ED - Kónya, E
ID - 52877
T2 - Proceedings of the Thirteenth Congress of the European Society for Research in Mathematics Education (CERME13)
TI - Prospective teachers' mathematical knowledge: Relating representations as design principle for developing knowledge of non-local mathematics for teaching in abstract algebra
ER -
TY - CONF
AU - Dellori, Anna
AU - Wessel, Lena
ED - IDMI-Primar Goethe-Universität Frankfurt , .
ID - 52907
T2 - Beiträge zum Mathematikunterricht 2022. 56. Jahrestagung der Gesellschaft für Didaktik der Mathematik
TI - Entwicklung und Erprobung von professionsorientierten Lernumgebungen zur Wissensvernetzung in der Algebra
ER -
TY - CONF
AU - Turhan, Anni-Yasmin
ED - Kutz, Oliver
ED - Lutz, Carsten
ED - Ozaki, Ana
ID - 52913
T2 - Proceedings of the 36th International Workshop on Description Logics {(DL} 2023) co-located with the 20th International Conference on Principles of Knowledge Representation and Reasoning and the 21st International Workshop on Non-Monotonic Reasoning {(KR} 2023 and NMR 2023)., Rhodes, Greece, September 2-4, 2023
TI - Brushing-up DLs to Cope with Imperfect Data (Abstract of Joint DL+NMR Invited Talk)
VL - 3515
ER -
TY - BOOK
AU - Janus, Richard
ID - 52852
SN - 978-3-643-15443-9
TI - Inklusion und Religionsunterricht. Einführung in eine heterogenitätssensible Religionspädagogik
VL - 9
ER -
TY - BOOK
ED - Janus, Richard
ED - Schroeter-Wittke, Harald
ED - Kamcili-Yildiz, Naciye
ED - Rose, Marion
ID - 52855
SN - 978-3-374-07442-6
TI - Religiöse Bildung angesichts von Kriegs- und Krisenerfahrungen im 19. und 20. Jahrhundert
ER -
TY - BOOK
AU - Janus, Richard
ID - 52942
SN - 9783140536363
TI - Die Kreuzzüge. Militärisches Mönchtum, Kirchlicher Imperialismus, Gottesfurcht und Menschenverachtung
ER -
TY - CONF
AU - Weller, Julian
AU - Roesmann, Daniel
AU - Eggert, Sönke
AU - von Enzberg, Sebastian
AU - Gräßler, Iris
AU - Dumitrescu, Roman
ID - 52832
KW - General Medicine
SN - 2212-8271
T2 - Procedia CIRP
TI - Identification and prediction of standard times in machining for precision steel tubes through the usage of data analytics
VL - 119
ER -
TY - GEN
AU - Banh, Ngoc Chi
AU - Scharlau, Ingrid
ED - Merz, Simon
ED - Frings, Christian
ED - Leuchtenberg, Bettina
ED - Moeller, Birte
ED - Mueller, Stefanie
ED - Neumann, Roland
ED - Pastötter, Bernhard
ED - Pingen, Leah
ED - Schui, Gabriel
ID - 46283
T2 - Abstracts of the 65th TeaP
TI - First steps towards real-time assessment of attentional weights and capacity according to TVA
ER -
TY - CONF
AU - Sloane, Hannah Sabrina
AU - Heidebrecht, Jana
ID - 52864
TI - Entwurfsmuster: Fachsensible wissenschaftliche Begleitung
ER -
TY - JOUR
AB - Die Rollenspiel-Methode ist ein handlungs- und anwendungsbezogenes Instrument, um Studierende bereits während der universitären Ausbildung für unterschiedliche professionelle Sicht- und Handlungsweisen zu sensibilisieren. In diesem Sinne stellt der folgende Beitrag ein Rollenspiel vor, welches als hochschuldidaktisches Material für die inklusionssensible Lehrer*innenbildung genutzt werden kann und Studierende auf zukünftige multiprofessionelle Kooperationshandlungen in der schulischen Praxis vorbereiten soll. Dieses bietet einen geeigneten Anlass, um die professionsübergreifende Zusammenarbeit „gefahrlos“ im Rahmen einer fiktiven kollegialen Fallkonferenz zu erproben sowie unterschiedliche pädagogische Professionsverständnisse aufzudecken und zu reflektieren. Darüber hinaus werden erste Durchführungserfahrungen und Evaluationsergebnisse diskutiert, die im Zuge der wissenschaftlichen Begleitforschung der Teilmaßnahme „Multiprofessionelle Kooperation in inklusiven Ganztagsschulen“ des Bielefelder QLB-Projekts BiProfessional erhoben wurden.
AU - Schuldt, Alessa
AU - Palm, Manfred
AU - Neumann, Phillip
AU - Böhm-Kasper, Oliver
AU - Demmer, Christine
AU - Lütje-Klose, Birgit
ID - 49434
IS - 4
JF - Zeitschrift für Konzepte Und Arbeitsmaterialien für Lehrer*innenbildung Und Unterricht
KW - Rollenspiel
KW - mulitprofessionelle Kooperation
KW - inklusionssensible Lehrerbildung
KW - Hochschuldidaktik
KW - Blended Learning
TI - „Jede*r von uns sieht die Situation eben unterschiedlich – das ist zwar eine Schwierigkeit, aber auch eine Bereicherung“
VL - 5
ER -
TY - CONF
AB - To ensure uniform documentation of support structure information, a concept is presented that enables a standardized depiction of support structures in technical drawings based on ISO 128-3. To this end, requirements for a uniform depiction are defined and a procedure for drawing entry is presented. The drawing entry should contain all production-relevant support structure information. The standardized documentation of support structure information in technical drawings is intended to ensure a simple, clear and safe exchange of information between business units or different companies along the value chain. As a result a possible drawing entry of support structures was developed. To distinguish between different support structure types, a standardized depiction of geometrical information in a specification field is shown. The specification field gives a detailed description of the support structure type, the geometry as well as the connection to the part and the building platform. Also uncommon support types like lattice structures or CAD based support structures can be implemented. To ensure the usability the depiction is editable and extendable.
AU - Lammers, Stefan
AU - Koers, Thorsten
AU - Magyar, Balázs
AU - Zimmer, Detmar
AU - Lieneke, Tobias
ID - 46745
KW - additive manufacturing
KW - support structures
TI - Depiction of support structures in technical drawings
ER -
TY - JOUR
AB - In spray-flame synthesis of nanoparticles, a precise understanding of the reaction processes is necessary to find optimal process parameters for the formation of the desired products. Coupling the chemistries of flame, solvent, and gas-phase species initially formed from the particle precursor in combination with the complex flow geometry of the spray flame means a special challenge for the modeling of the reaction processes. A new burner has been developed that is capable to observe the reaction of precursor solutions frequently used in spray-flame synthesis. The burner provides an almost flat, laminar, and steady flame with homogeneous addition of a fine aerosol and thus enables detailed investigation and modeling of the coupled reactions inde-pendent of spray formation and turbulent mixing. With its two separate supply channel matrices, the burner also enables the use of reactants that would otherwise react with each other already before reaching the flame. These features enable the investigation of a wide range of flame-based synthesis methods for nanoparticles and, due to the flat-flame geometry, kinetics models for these processes can be developed and validated. This work describes the matrix burner development and its gas flow optimization by simulation. Droplet-size dis-tributions generated by ultrasonic nebulization and their interaction with the burner structure are investigated by phase-Doppler anemometry. As an example for nanoparticle-for ming flames from solutions, iron-oxide nanoparticle-generating flames using iron(III) nitrate nonahydrate dissolved in 1-butanol were investigated. This effort includes measurements of two-dimensional maps of the flame temperature by a thermocouple and height-dependent concentration profiles of the main species by time-of-flight mass spectrometry. Exper-imental data are compared with 1D simulations using a reduced reaction mechanism. The results show that the new burner is well suited for the development of reaction models for precursors supplied in the liquid phase usually applied in spray-flame synthesis configurations.& COPY; 2022 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
AU - Apazeller, Sascha
AU - Gonchikzhapov, Munko
AU - Nanjaiah, Monika
AU - Kasper, Tina
AU - Wlokas, Irenäus
AU - Wiggers, Hartmut
AU - Schulz, Christof
ID - 53078
IS - 1
JF - Proceedings of the Combustion Institute
KW - Physical and Theoretical Chemistry
KW - Mechanical Engineering
KW - General Chemical Engineering
SN - 1540-7489
TI - A new dual matrix burner for one-dimensional investigation of aerosol flames
VL - 39
ER -
TY - JOUR
AB - Polycyclic aromatic hydrocarbons (PAHs) are formed in fuel-rich and sooting hydrocarbon flames. These compounds and smaller aromatic flame constituents, such as benzene, toluene and naphthalene can be detected by flame-sampling molecular beam mass spectrometry (MBMS). They are readily ionized by photoionization with UV light, either in resonant or non-resonant ionization processes. The multiphoton ionization of benzene, toluene, and styrene with MBMS detection was investigated as a function of laser power and wavelength and the quantitative relation between ion signal and mole fractions in the flames was established. These measurements were prerequisites for the measurement of quantitative mole fraction profiles of these species in flames of various fuels. In addition, the measurements provide relative mole fraction profiles of various other aromatic flame species. The results are compared to measurements of aromatics in butadiene, propyne, and allene flames by single-photon ionization with vacuum ultraviolet radiation from a synchrotron source and other literature data. (c) 2023 Published by Elsevier Inc. on behalf of The Combustion Institute.
AU - Kasper, Tina
AU - Hansen, Nils
ID - 53075
IS - 1
JF - Combustion and Flame
TI - Resonance enhanced multiphoton ionization detection of aromatics formation in fuel-rich flames
VL - 257
ER -
TY - JOUR
AU - Apazeller, Sascha
AU - Gonchikzhapov, Munko
AU - Nanjaiah, Monika
AU - Kasper, Tina
AU - Wlokas, Irenäus
AU - Wiggers, Hartmut
AU - Schulz, Christof
ID - 36812
JF - Proceedings of the Combustion Institute
KW - Physical and Theoretical Chemistry
KW - Mechanical Engineering
KW - General Chemical Engineering
SN - 1540-7489
TI - A new dual matrix burner for one-dimensional investigation of aerosol flames
ER -
TY - JOUR
AU - Kasper, Tina
AU - Hansen, Nils
ID - 53074
JF - Combustion and Flame
KW - General Physics and Astronomy
KW - Energy Engineering and Power Technology
KW - Fuel Technology
KW - General Chemical Engineering
KW - General Chemistry
SN - 0010-2180
TI - Resonance enhanced multiphoton ionization detection of aromatics formation in fuel-rich flames
VL - 257
ER -
TY - JOUR
AB - In der zukünftigen Produktion werden der Aufbau und die Entwicklung der Fähigkeiten der Mitarbeiter:innen ein entscheidender Wettbewerbsvorteil von Unternehmen. In menschenzentrierten Montagesystemen passen sich die Mitarbeiter:innen auf der Grundlage von Lernprozessen an neue und sich ändernde Aufgaben an. Dazu muss der Bezug zu den Fähigkeiten der Mitarbeiter:innen im Zuge der integrierten Produkt-und Prozessentwicklung vorgesehen werden. Daher wurde eine Methodik entwickelt, die diese Fähigkeiten explizit abbildet und sie sowohl in der Entwicklung als auch in der kurzfristigen Personaleinsatzplanung bei der Aufgabenzuordnung berücksichtigt. Zur Anwendung wurde die Methodik prototypisch in einem Software-Werkzeug umgesetzt und in Kombination mit einer diskreten ereignisorientierten Simulation erprobt.
AU - Gräßler, Iris
AU - Roesmann, Daniel
AU - Pottebaum, Jens
ID - 44215
IS - 3
JF - Zeitschrift für wirtschaftlichen Fabrikbetrieb
KW - Management Science and Operations Research
KW - Strategy and Management
KW - General Engineering
SN - 2511-0896
TI - Human Factors in der integrierten Produktentwicklung
VL - 118
ER -
TY - JOUR
AU - Pelster, Matthias
AU - Schaltegger, Stefan
ID - 25041
IS - 1
JF - Business Ethics, the Environment & Responsibility
TI - The dark triad and corporate sustainability: An empirical analysis of personality traits of middle managers
VL - 31
ER -
TY - CHAP
AU - Kehrbusch, Burkhard
AU - Engels, Gregor
ED - Vogel-Heuser, Birgit
ED - Wimmer, Manuel
ID - 28338
T2 - Digital Transformation: Core Technologies and Emerging Topics from a Computer Science Perspective
TI - Digital Transformation - Towards flexible human-centric enterprises
ER -
TY - JOUR
AB - Optical traveling wave antennas offer unique opportunities to control and selectively guide light into a specific direction, which renders them excellent candidates for optical communication and sensing. These applications require state-of-the-art engineering to reach optimized functionalities such as high directivity and radiation efficiency, low sidelobe levels, broadband and tunable capabilities, and compact design. In this work, we report on the numerical optimization of the directivity of optical traveling wave antennas made from low-loss dielectric materials using full-wave numerical simulations in conjunction with the particle swarm optimization algorithm. The antennas are composed of a reflector and a director deposited on a glass substrate, and an emitter placed in the feed gap between them serves as an internal source of excitation. In particular, we analyze antennas with rectangular- and horn-shaped directors made of either hafnium dioxide or silicon. The optimized antennas produce highly directional emissions due to the presence of two dominant guided TE modes in the director in addition to leaky modes. These guided modes dominate the far-field emission pattern and govern the direction of the main lobe emission, which predominately originates from the end facet of the director. Our work also provides a comprehensive analysis of the modes, radiation patterns, parametric influences, and bandwidths of the antennas, which highlights their robust nature.
AU - Farheen, Henna
AU - Leuteritz, Till
AU - Linden, Stefan
AU - Myroshnychenko, Viktor
AU - Förstner, Jens
ID - 28413
IS - 1
JF - Journal of the Optical Society of America B
KW - tet_topic_opticalantenna
SN - 0740-3224
TI - Optimization of optical waveguide antennas for directive emission of light
VL - 39
ER -
TY - CONF
AU - Müller, Michelle
AU - Neumann, Jürgen
AU - Kundisch, Dennis
ID - 24579
T2 - Proceedings of the 55th Hawaii International Conference on System Sciences (HICSS)
TI - Dear Guests, please pay for my license – Analyzing the heterogenous cost-pass-through of commercial and non-commercial rental suppliers in response to regulatory policies
ER -
TY - CONF
AU - Seutter, Janina
AU - Müller, Michelle
AU - Müller, Stefanie Jutta Marianne
AU - Kundisch, Dennis
ID - 24581
T2 - Proceedings of the 55th Hawaii International Conference on System Sciences (HICSS)
TI - Moment or Movement – An Empirical Analysis of the Heterogeneous Impact of Media Attention on Charitable Crowdfunding Campaigns
ER -
TY - JOUR
AB - We study a double-scattering coherent mechanism of negative polarization (NP) near opposition that is observed for powder-like surfaces. The problem is solved numerically for absorbing structures with irregular constituents, cubes, spheres, and ellipsoids larger than the wavelength of incident light. Our simulations show that double scattering between two random irregular particles shows weak NP. Adding one more particle significantly increases the relative contribution of double scattering which enhances NP. Simulations with regular shapes and controlled geometric parameters show that the interference mechanism is sensitive to the geometry of the scattering system and can also result in no polarization or even strong enhancement of positive polarization at backscattering.
AU - Alhaddad, Samer
AU - Grynko, Yevgen
AU - Farheen, Henna
AU - Förstner, Jens
ID - 29075
IS - 1
JF - Optics Letters
KW - tet_topic_scattering
SN - 0146-9592
TI - Numerical analysis of the coherent mechanism producing negative polarization at backscattering from systems of absorbing particles
VL - 47
ER -
TY - CONF
AU - zur Heiden, Philipp
AU - Priefer, Jennifer
AU - Beverungen, Daniel
ED - Bui, Tung X.
ID - 29146
SN - 978-0-9981331-5-7
T2 - Proceedings of the 55th Hawaii International Conference on System Sciences
TI - Utilizing Geographic Information Systems for Condition-Based Maintenance on the Energy Distribution Grid
ER -
TY - CONF
AU - Herwix, Alexander
AU - zur Heiden, Philipp
ED - Bui, Tung X.
ID - 29147
SN - 978-0-9981331-5-7
T2 - Proceedings of the 55th Hawaii International Conference on System Sciences
TI - Context in Design Science Research: Taxonomy and Framework
ER -
TY - CONF
AU - zur Heiden, Philipp
AU - Beverungen, Daniel
ED - Bui, Tung X.
ID - 29148
SN - 978-0-9981331-5-7
T2 - Proceedings of the 55th Hawaii International Conference on System Sciences
TI - A Renaissance of Context in Design Science Research
ER -
TY - GEN
AU - Koldewey, Christian
AU - Dumitrescu, Roman
AU - Rabe, Martin
ID - 29149
T2 - Proceedings of the 55th Hawaii International Conference on System Sciences
TI - Introduction to the Data-driven Services in Manufacturing Minitrack - Exploring Management, Engineering, and Organizational Transformation
ER -
TY - JOUR
AU - Eke, Norbert
ID - 29155
IS - 18
JF - Literatur in Westfalen. Beiträge zur Forschung. Hg. von Walter Gödden und Arnold Maxwill.
TI - Blurred Lines. Der Reisende Michael Roes
ER -
TY - JOUR
AU - Eke, Norbert
ID - 29156
JF - Arbeitsbuch Judith Kuckart: Erzählen – Theater – Tanz. Hg. von Johanna Canaris und Stefan Elit. Berlin u.a.:
TI - Schweigen, Erzählen (und Lieben). Judith Kuckarts Roman Lenas Liebe (2002) und seine Verfilmung Bittere Kirschen (2011)
ER -
TY - JOUR
AU - Eke, Norbert
ID - 29157
JF - Theater und Krise. Paradigmen der Störung in Dramentexten und Bühnenkonzepten nach 2000. Hg. von Marta Famula und Verena Witschel.
TI - „Das Grundelement von Theater ist Verwandlung“. Heiner Müllers Idee des Theaters als Krise (und Störung).
ER -
TY - JOUR
AU - Eke, Norbert
ID - 29158
JF - Literatur in Westfalen. Beiträge zur Forschung 18. Hg. von Walter Gödden und Arnold Maxwill.
TI - „Ich glaube, der Melancholiker ist jemand, der die Fremde lies, der sie nicht gestalten will und sich von ihr nicht gestalten lässt, sondern der sie wie ein Buch aufschlägt…“. Ein Gespräch mit Michael Roes.
ER -
TY - CONF
AU - Schoormann, T.
AU - Möller, F.
AU - Szopinski, Daniel
ID - 27280
T2 - Tagungsband der 17. Internationalen Tagung Wirtschaftsinformatik 2022
TI - Exploring purposes of using taxonomies
ER -
TY - CONF
AU - Altenhöner, Reinhard
AU - Dieckmann, Lisa
AU - Münzmay, Andreas
AU - Richts-Matthaei, Kristina
AU - Röwenstrunk, Daniel
AU - Stellmacher, Martha
AU - Pratschke, Margarete
AU - Primavesi, Patrick
AU - Schulz, Christoph
ID - 27461
TI - Kultur – Daten – Kuratierung: Was Speichern Wir Und Wozu?
ER -
TY - CONF
AB - Explainability for machine learning gets more and more important in high-stakes decisions like real estate appraisal. While traditional hedonic house pricing models are fed with hard information based on housing attributes, recently also soft information has been incorporated to increase the predictive performance. This soft information can be extracted from image data by complex models like Convolutional Neural Networks (CNNs). However, these are intransparent which excludes their use for high-stakes financial decisions. To overcome this limitation, we examine if a two-stage modeling approach can provide explainability. We combine visual interpretability by Regression Activation Maps (RAM) for the CNN and a linear regression for the overall prediction. Our experiments are based on 62.000 family homes in Philadelphia and the results indicate that the CNN learns aspects related to vegetation and quality aspects of the house from exterior images, improving the predictive accuracy of real estate appraisal by up to 5.4%.
AU - Kucklick, Jan-Peter
ID - 27506
KW - Explainable Artificial Intelligence (XAI)
KW - Regression Activation Maps
KW - Real Estate Appraisal
KW - Convolutional Block Attention Module
KW - Computer Vision
T2 - 55th Annual Hawaii International Conference on System Sciences (HICSS-55)
TI - Visual Interpretability of Image-based Real Estate Appraisal
ER -
TY - CONF
AB - Accurate real estate appraisal is essential in decision making processes of financial institutions, governments, and trending real estate platforms like Zillow. One of the most important factors of a property’s value is its location. However, creating accurate quantifications of location remains a challenge. While traditional approaches rely on Geographical Information Systems (GIS), recently unstructured data in form of images was incorporated in the appraisal process, but text data remains an untapped reservoir. Our study shows that using text data in form of geolocated Wikipedia articles can increase predictive performance over traditional GIS-based methods by 8.2% in spatial out-of-sample validation. A framework to automatically extract geographically weighted vector representations for text is established and used alongside traditional structural housing features to make predictions and to uncover local patterns on sale price for real estate transactions between 2015 and 2020 in Allegheny County, Pennsylvania.
AU - Heuwinkel, Tim
AU - Kucklick, Jan-Peter
AU - Müller, Oliver
ID - 27507
KW - Real Estate Appraisal
KW - Text Regression
KW - Natural Language Processing (NLP)
KW - Location Intelligence
KW - Wikipedia
T2 - 55th Annual Hawaii International Conference on System Sciences (HICSS-55)
TI - Using Geolocated Text to Quantify Location in Real Estate Appraisal
ER -
TY - JOUR
AU - Widhalm, Alex
AU - Golla, Christian
AU - Weber, Nils
AU - Mackwitz, Peter
AU - Zrenner, Artur
AU - Meier, Cedrik
ID - 29716
IS - 4
JF - Optics Express
KW - Atomic and Molecular Physics
KW - and Optics
SN - 1094-4087
TI - Electric-field-induced second harmonic generation in silicon dioxide
VL - 30
ER -
TY - CONF
AU - Abughannam, Saed
AU - Scheytt, J. Christoph
ID - 29767
T2 - International Symposium on Circuits and Systems (ISCAS 2022)
TI - Low-Power Low-Data-Rate Wireless PPM Receiver Based on 13-Bits Barker Coded SAW Correlator with Scalable Data-Rate and Sensitivity
ER -
TY - CONF
AU - Abughannam, Saed
AU - Kruse, Stephan
AU - Iftekhar, Mohammed
AU - Scheytt, J. Christoph
ID - 29770
T2 - German Microwave Conference 2022 (GeMiC 2022)
TI - Design and Measurements of a Low-power Low-Date-rate Direct-detection Wireless Receiver with Improved Co-channel Interference Robustness
ER -
TY - CHAP
AB - Die Studieneingangsphase Physik stellt für die Studienanfänger Innen einen komplexen Lernprozess mit vielfältigen Anforderungen auf fachlicher, Metakognitions- und Sozialisations-Ebene dar, der ihre akademische Identitätsbildung beeinflusst und prägt.
Ziel des Projektes Paderborner Studieneingangsphase Physik (PSΦ) ist die evidenzbasierte Gestaltung eines strukturierten Studieneinstiegs und einer in sich kohärent abgestimmten Studieneingangsphase „aus einem Guss“. Die Implementation eines neuen Übungsformats (Präsenzübungen) in den Fachvorlesungen sowie die Unterstützung der Studierenden im Bereich des selbstregulierten Lernens zeigen positive Effekte in einer erhöhten Teilnahmequote sowie Zufriedenheit der Studierenden mit der Veranstaltung, in einem aktiveren Arbeitsverhalten sowie einer höheren Bestehensquote der Klausur. Ein messbar größerer Fachwissenserwerb konnte nicht nachgewiesen werden. Auf Basis der Evidenzen konnten Stellschrauben für die Weiterentwicklung sowie für die Unterstützung der Lehrenden abgeleitet werden.
In dem Beitrag werden die Gelingensbedingungen und Strukturen für eine wirksame Zusammenarbeit von Fachdidaktik und Fachwissenschaft am Beispiel der Überarbeitung der Studieneingangsphase im Rahmen einer community of practice sowie der Wirksamkeit der Implementierung diskutiert.
AU - Bauer, Anna
AU - Woitkowski, David
AU - Reuter, Dirk
AU - Reinhold, Peter
ED - Fahr, Uwe
ED - Kenner, Alessandra
ED - Angenent, Holger
ED - Eßer-Lüghausen, Alexandra
ID - 29789
T2 - Hochschullehre erforschen.
TI - Fachliche und überfachliche Herausforderungen in der Studieneingangsphase Physik
ER -
TY - GEN
AB - We study the abilities of competitive markets to produce sufficient energy capacities to
meet a fixed energy demand. Renewable energy producers with stochastic outputs and no
variable costs compete against conventional energy producers with deterministic, pollutant
outputs and increasing marginal costs. We find that either market forces are strong enough
to serve the entire demand, or they are too weak such that the market fails and nothing is
produced. This crucially depends on the relative cost of renewable energy investments, such
that relatively cheap renewable energy causes the market to fail. Welfare analyses show that
with increasing levels of conventional energy pollution the ability of the market to produce
an ecient outcome further declines. As a policy implication, our findings refute the use of
a strategic reserve as a blackout backstop solution. Instead, a capacity mechanism consisting
of a tax-and-subsidy scheme can align the market outcome with the eficient solution for all
pollution levels and relative costs of renewable energy capacities.
AU - Block, Lukas
AU - Westbrock, Bastian
ID - 29761
KW - Renewable versus conventional energy
KW - capacity mechanisms
KW - strategic reserves
KW - capacity payments
TI - Capacity investments in a competitive energy market
ER -
TY - CONF
AU - Priefer, Jennifer
AU - Steiger, Lennart
ID - 29805
T2 - Wirtschaftsinformatik 2022 Proceedings
TI - Designing a GIS-AHP-Based Spatial Decision Support System for Discovering and Visualizing Suitable Locations for Electric Vehicle Charging Stations
VL - 31
ER -
TY - JOUR
AU - Reitz, A.
AU - Grydin, O.
AU - Schaper, M.
ID - 29809
JF - Materials Science and Engineering: A
KW - Mechanical Engineering
KW - Mechanics of Materials
KW - Condensed Matter Physics
KW - General Materials Science
SN - 0921-5093
TI - Influence of thermomechanical processing on the microstructural and mechanical properties of steel 22MnB5
VL - 838
ER -
TY - CONF
AB - The development of business models is a challenging task that can be supported with software tools. Here, existing approaches and tools do not focus on the company’s situation in which the development takes place (e.g., financial resources, product type). To tackle this challenge, we used design science research to develop a situation-specific business model development approach that contains three stages: First, existing knowledge in terms of tasks to do (e.g., analyze competitive advantage), and decisions to be made (e.g., social media marketing) are stored in repositories. Second, the knowledge is used to compose a development method based on the company’s situation. Third, the development method is enacted to develop a business model. This demonstration paper presents a tool-support called Situational Business Model Developer that supports all stages of our approach. We release the tool under open-source and evaluate it with a case study on developing business models for mobile apps.
AU - Gottschalk, Sebastian
AU - Yigitbas, Enes
AU - Nowosad, Alexander
AU - Engels, Gregor
ID - 29839
KW - Business Model Development
KW - Situational Method Engineering
KW - Tool Support
T2 - Proceedings of the 17th International Conference on Wirtschaftsinformatik
TI - Situational Business Model Developer: A Tool-support for Situation-specific Business Model Development
ER -
TY - CONF
AB - Due to the proliferation of Virtual Reality (VR) technology, VR is finding new applications in various domains, such as stock trading. Here, traders invest in stocks intending to increase their profit. For this purpose, in conventional stock trading, traders usually make use of 2D applications on desktop or laptop devices. This leads to many drawbacks such as poor visibility due to limited 2D representation, complex interaction due to indirect interaction via mouse and keyboard, or restricted support for collaboration between traders. To overcome these issues, we have developed a novel collaborative, virtual environment for stock trading, which enables stock traders to view financial information and trade stocks with other collaborators. The main results of a usability study indicate that the VR environment, compared to conventional stock trading, shows no significant advantages concerning efficiency and effectiveness, however, we could observe an increased user satisfaction and better collaboration.
AU - Yigitbas, Enes
AU - Gottschalk, Sebastian
AU - Nowosad, Alexander
AU - Engels, Gregor
ID - 29840
KW - virtual reality
KW - stock trading
KW - collaboration
KW - usability
T2 - Proceedings of the 17th International Conference on Wirtschaftsinformatik
TI - Development and Evaluation of a Collaborative Stock Trading Environment in Virtual Reality
ER -
TY - JOUR
AU - Castenow, Jannik
AU - Kling, Peter
AU - Knollmann, Till
AU - Meyer auf der Heide, Friedhelm
ID - 29843
JF - Information and Computation
KW - Computational Theory and Mathematics
KW - Computer Science Applications
KW - Information Systems
KW - Theoretical Computer Science
SN - 0890-5401
TI - A Discrete and Continuous Study of the Max-Chain-Formation Problem
ER -
TY - CONF
AU - Fockel, Markus
AU - Schubert, David
AU - Trentinaglia, Roman
AU - Schulz, Hannes
AU - Kirmair, Wolfgang
ID - 29847
T2 - Proceedings of the 10th International Conference on Model-Driven Engineering and Software Development
TI - Semi-automatic Integrated Safety and Security Analysis for Automotive Systems
ER -
TY - CONF
AU - Koch, Thorsten
AU - Trippel, Sascha
AU - Dziwok, Stefan
AU - Bodden, Eric
ID - 29844
T2 - Proceedings of the 10th International Conference on Model-Driven Engineering and Software Development
TI - Integrating Security Protocols in Scenario-based Requirements Specifications
ER -
TY - CHAP
AU - Albers, Timm
AU - Filipiak, Agnes
AU - Franzen, Katja
AU - Hellmich, Frank
ED - Schimek, B
ED - Kremsner, G
ED - Proyer, M
ED - Grubich, R
ED - Paudel, F
ED - Grubich-Müller, R
ID - 26657
T2 - Grenzen.Gänge.Zwischen.Welten. Kontroversen – Entwicklungen – Perspektiven der Inklusionsforschung
TI - Kompetenzentwicklung im inklusiven Unterricht (KinU) – eine internationale Perspektive
ER -
TY - GEN
AU - Beule, Felix
AU - Teutenberg, Dominik
AU - Meschut, Gerson
AU - Aubel, Tobias
AU - Matzenmiller, Anton
ID - 29852
T2 - 22. Kolloquium: Gemeinsame Forschung in der Klebtechnik
TI - Methodenentwicklung zur Versagensanalyse aufgrund der Aushärtung vorgeschädigter Klebverbindungen in stahlintensiven Mischbaustrukturen
ER -
TY - CONF
AU - Carillo Beber, Vinicius
AU - Nagel, Christof
AU - Mayer, Bernd
AU - Köster, Christian
AU - Matzenmiller, Anton
AU - Hecht, Matthias
AU - Baumgartner, Jörg
AU - Melz, Tobias
AU - Tews, Karina
AU - Çavdar, Serkan
AU - Meschut, Gerson
ID - 29855
T2 - 22. Kolloquium: Gemeinsame Forschung in der Klebtechnik
TI - Lebensdauerprognose für Stahlklebverbindungen bei multiaxialer Belastung mit Phasenverschiebung, veränderlicher Mittelspannung und variablen Amplituden
ER -
TY - GEN
AU - Lanza, Lukas Johannes
AU - Berger, Thomas
ID - 29835
TI - Funnel control of linear systems under output measurement losses
ER -
TY - THES
AU - Schneider, Stefan Balthasar
ID - 29672
TI - Network and Service Coordination: Conventional and Machine Learning Approaches"
ER -
TY - CONF
AB - Cyber-physical systems generate and collect huge amounts of usage data during operation. Analyzing these data may enable manufacturing companies to identify weaknesses and learn about the users of their products. Such insights are valuable in the early phases of product development like product planning, as they facilitate decision-making for product improvement. The analysis and exploitation of usage data in product planning, however, is a new task for manufacturing companies. To reduce mistakes and improve the results, companies should build upon a suitable reference process model. Unfortunately, established models for analyzing data cannot be easily applied for product planning. In this paper, we propose a reference process model for usage data-driven product planning. It builds on three well-established models for analyzing data and addresses the unique characteristics of usage data-driven product planning. Finally, we customize the model for a manufacturing company and demonstrate how it could be implemented in practice.
AU - Meyer, Maurice
AU - Wiederkehr, Ingrid
AU - Panzner, Melina
AU - Koldewey, Christian
AU - Dumitrescu, Roman
ID - 29380
T2 - Proceedings of the 55th Hawaii International Conference on System Sciences
TI - A Reference Process Model for Usage Data-Driven Product Planning
ER -
TY - CONF
AU - Yigitbas, Enes
AU - Karakaya, Kadiray
AU - Jovanovikj, Ivan
AU - Engels, Gregor
ED - Grunske, Lars
ED - Siegmund, Janet
ED - Vogelsang, Andreas
ID - 29927
T2 - Software Engineering 2022, Fachtagung des GI-Fachbereichs Softwaretechnik, 21.-25. Februar 2022, Virtuell
TI - Enhancing Human-in-the-Loop Adaptive Systems through Digital Twins and VR Interfaces
VL - {P-320}
ER -
TY - CONF
AU - Yigitbas, Enes
AU - Gorissen, Simon
AU - Weidmann, Nils
AU - Engels, Gregor
ED - Grunske, Lars
ED - Siegmund, Janet
ED - Vogelsang, Andreas
ID - 29926
T2 - Software Engineering 2022, Fachtagung des GI-Fachbereichs Softwaretechnik, 21.-25. Februar 2022, Virtuell
TI - Collaborative Software Modeling in Virtual Reality
VL - {P-320}
ER -
TY - CONF
AU - Witschen, Linus Matthias
AU - Wiersema, Tobias
AU - Reuter, Lucas David
AU - Platzner, Marco
ID - 29945
T2 - 2022 59th ACM/IEEE Design Automation Conference (DAC)
TI - Search Space Characterization for Approximate Logic Synthesis
ER -
TY - CONF
AU - Witschen, Linus Matthias
AU - Wiersema, Tobias
AU - Artmann, Matthias
AU - Platzner, Marco
ID - 29865
T2 - Design, Automation and Test in Europe (DATE)
TI - MUSCAT: MUS-based Circuit Approximation Technique
ER -
TY - GEN
AB - We extend a recent result in high-gain feedback output tracking control to achieve exact tracking within finite time, i.e., the output of a system and its relevant derivatives have certain exact values at a predefined finite time.
We propose a new funnel control scheme achieving this, whereas the error between the reference and the output evolves within prescribed bounds.
Applications of this are, for instance, linking up two parts of a train, or docking spaceships.
AU - Lanza, Lukas Johannes
ID - 29952
TI - Exact output tracking in prescribed finite time via funnel control
ER -
TY - CONF
AU - Kowatz, Jannik
AU - Teutenberg, Dominik
AU - Meschut, Gerson
ID - 29344
T2 - 22. Kolloquium Gemeinsame Forschung in der Klebtechnik
TI - Weiterentwicklung der induktiven Schnellhärtung von Klebverbindungen für robuste Fertigungsprozesse unter Berücksichtigung von serienrelevanten Einflussfaktoren
ER -
TY - CONF
AU - Chudalla, Nick
AU - Meschut, Gerson
AU - Bartley, Aurélie
AU - Wibbeke, Tim Michael
ID - 30003
T2 - 22. Kolloquium: Gemeinsame Forschung in der Klebtechnik
TI - Analyse des Versagensverhaltens geklebter Stahl-Verbindungen beim werkstoffschonenden Entfügen in der Karosserieinstandsetzung
ER -
TY - JOUR
AB - The growing demand for bandwidth and energy efficiency requires new solutions for signal detection and processing. We demonstrate a concept for high-bandwidth signal detection with low-speed photodetectors and electronics. The method is based on the parallel optical sampling of a high-bandwidth signal with sinc-pulse sequences provided by a Mach-Zehnder modulator. For the electronic detection and processing this parallel sampling enables to divide the high-bandwidth optical signal with the bandwidth B into N electrical signals with the baseband bandwidth of B/(2N) . In proof-of-concept experiments with N=3 , we present the detection of 24 GHz optical signals by detectors with a bandwidth of only 4 GHz. For ideal components, the sampling and bandwidth down-conversion does not add an excess error to the signals and even for the non-ideal components of our proof-of-concept setup, it is below 1%. Thus, the rms error for the measurement of the 24 GHz signal was reduced by a factor of about 3.4 and the effective number of bits were increased by 1.8.
AU - Meier, Janosch
AU - Singh, Karanveer
AU - Misra, Arijit
AU - Preussler, Stefan
AU - Scheytt, Christoph
AU - Schneider, Thomas
ID - 30012
JF - IEEE Photonics Journal
TI - High-Bandwidth Arbitrary Signal Detection Using Low-Speed Electronics
VL - 14
ER -
TY - JOUR
AB - In this paper, the theory of phase-locking of a microwave oscillator on the interharmonics, i.e. non-integer harmonics, of the repetition rate of the optical pulse train of a mode-locked laser (MLL) is developed. A balanced optical microwave phase detector (BOMPD) is implemented using a balanced Mach-Zehnder modulator and is employed to discriminate the phase difference between the envelope of the optical pulses and the microwave oscillator. It is shown mathematically that the inherent nonlinear properties of BOMPD with respect to the microwave excitation amplitude can be used for interharmonic locking. The characteristic functions of the phase detector for interharmonic locking are derived analytically and are compared with the measurement results. An opto-electronic phase-locked loop (OEPLL) is demonstrated whose output frequency locks on interharmonics of the MLL repetition rate when an appropriate modulator bias and sufficient RF amplitude are applied. Thus, for the first time theory and experiment of reliable locking on interharmonics of the repetition rate of a MLL are presented.
AU - Bahmanian, Meysam
AU - Kress, Christian
AU - Scheytt, Christoph
ID - 30011
JF - Optics Express
TI - Locking of microwave oscillators on the interharmonics of mode-locked laser signals
VL - 14
ER -
TY - BOOK
AU - Rossel, Moritz Sebastian
AU - Meschut, Gerson
ID - 30102
SN - 978-3-86776-631-9
TI - Methodenentwicklung für die Simulation mechanischer Fügeprozesse mit besonderer Berücksichtigung fügespezifischer Reibverhältnisse
VL - 573
ER -
TY - GEN
AU - Roopa, Rajanna
ID - 30152
TI - Evaluation of Algorithms for the Node Capacitated Clique
ER -
TY - JOUR
AB - Metasurfaces provide applications for a variety of flat elements and devices due to the ability to modulate light with subwavelength structures. The working principle meanwhile gives rise to the crucial problem and challenge to protect the metasurface from dust or clean the unavoidable contaminants during daily usage. Here, taking advantage of the intelligent bioinspired surfaces which exhibit self-cleaning properties, a versatile dielectric metasurface benefiting from the obtained superhydrophilic or quasi-superhydrophobic states is shown. The design is realized by embedding the metasurface inside a large area of wettability supporting structures, which is highly efficient in fabrication, and achieves both optical and wettability functionality at the same time. The superhydrophilic state enables an enhanced optical response with water, while the quasi-superhydrophobic state imparts the fragile antennas an ability to self-clean dust contamination. Furthermore, the metasurface can be easily switched and repeated between these two wettability or functional states by appropriate treatments in a repeatable way, without degrading the optical performance. The proposed design strategy will bring new opportunities to smart metasurfaces with improved optical performance, versatility, and physical stability.
AU - Lu, Jinlong
AU - Sain, Basudeb
AU - Georgi, Philip
AU - Protte, Maximilian
AU - Bartley, Tim
AU - Zentgraf, Thomas
ID - 26747
IS - 1
JF - Advanced Optical Materials
SN - 2195-1071
TI - A Versatile Metasurface Enabling Superwettability for Self‐Cleaning and Dynamic Color Response
VL - 10
ER -