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  • Books  (463)
  • thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues  (388)
  • thema EDItEUR::P Mathematics and Science::PN Chemistry  (46)
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  • 1
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    Springer Nature | Springer
    Publication Date: 2024-04-14
    Description: This open access book provides an overview of the dissertations of the eleven nominees for the Ernst Denert Award for Software Engineering in 2020. The prize, kindly sponsored by the Gerlind & Ernst Denert Stiftung, is awarded for excellent work within the discipline of Software Engineering, which includes methods, tools and procedures for better and efficient development of high quality software. An essential requirement for the nominated work is its applicability and usability in industrial practice. The book contains eleven papers that describe the works by Jonathan Brachthäuser (EPFL Lausanne) entitled What You See Is What You Get: Practical Effect Handlers in Capability-Passing Style, Mojdeh Golagha’s (Fortiss, Munich) thesis How to Effectively Reduce Failure Analysis Time?, Nikolay Harutyunyan’s (FAU Erlangen-Nürnberg) work on Open Source Software Governance, Dominic Henze’s (TU Munich) research about Dynamically Scalable Fog Architectures, Anne Hess’s (Fraunhofer IESE, Kaiserslautern) work on Crossing Disciplinary Borders to Improve Requirements Communication, Istvan Koren’s (RWTH Aachen U) thesis DevOpsUse: A Community-Oriented Methodology for Societal Software Engineering, Yannic Noller’s (NU Singapore) work on Hybrid Differential Software Testing, Dominic Steinhofel’s (TU Darmstadt) thesis entitled Ever Change a Running System: Structured Software Reengineering Using Automatically Proven-Correct Transformation Rules, Peter Wägemann’s (FAU Erlangen-Nürnberg) work Static Worst-Case Analyses and Their Validation Techniques for Safety-Critical Systems, Michael von Wenckstern’s (RWTH Aachen U) research on Improving the Model-Based Systems Engineering Process, and Franz Zieris’s (FU Berlin) thesis on Understanding How Pair Programming Actually Works in Industry: Mechanisms, Patterns, and Dynamics – which actually won the award. The chapters describe key findings of the respective works, show their relevance and applicability to practice and industrial software engineering projects, and provide additional information and findings that have only been discovered afterwards, e.g. when applying the results in industry. This way, the book is not only interesting to other researchers, but also to industrial software professionals who would like to learn about the application of state-of-the-art methods in their daily work.
    Keywords: Software Engineering ; Software Development ; Requirements Engineering ; Software Modeling ; Software Research ; Ernst Denert Award ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMZ Software Engineering ; thema EDItEUR::K Economics, Finance, Business and Management::KJ Business and Management::KJQ Business mathematics and systems ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYZ Human–computer interaction::UYZM Information architecture
    Language: English
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  • 2
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    Springer Nature | Springer
    Publication Date: 2024-04-14
    Description: This open access two-volume set LNCS 13371 and 13372 constitutes the refereed proceedings of the 34rd International Conference on Computer Aided Verification, CAV 2022, which was held in Haifa, Israel, in August 2022. The 40 full papers presented together with 9 tool papers and 2 case studies were carefully reviewed and selected from 209 submissions. The papers were organized in the following topical sections: Part I: Invited papers; formal methods for probabilistic programs; formal methods for neural networks; software Verification and model checking; hyperproperties and security; formal methods for hardware, cyber-physical, and hybrid systems. Part II: Probabilistic techniques; automata and logic; deductive verification and decision procedures; machine learning; synthesis and concurrency. This is an open access book.
    Keywords: architecting ; architecture verification and validation ; artificial intelligence ; computer programming ; computer science ; computer systems ; distributed computer systems ; distributed systems ; embedded systems ; formal logic ; mathematics ; model checking ; programming languages ; software architecture ; software design ; software engineering ; software quality ; theoretical computer science ; verification ; verification and validation ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMZ Software Engineering ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMB Algorithms and data structures ; thema EDItEUR::U Computing and Information Technology::UT Computer networking and communications
    Language: English
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  • 3
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    Springer Nature | Springer
    Publication Date: 2024-04-14
    Description: This volume, LNAI 13385, constitutes the refereed proceedings of the 11th International Joint Conference on Automated Reasoning, IJCAR 2022, held in Haifa, Israel, in August 2022. The 32 full research papers and 9 short papers presented together with two invited talks were carefully reviewed and selected from 85 submissions. The papers focus on the following topics: Satisfiability, SMT Solving,Arithmetic; Calculi and Orderings; Knowledge Representation and Jutsification; Choices, Invariance, Substitutions and Formalization; Modal Logics; Proofs System and Proofs Search; Evolution, Termination and Decision Prolems. This is an open access book.
    Keywords: artificial intelligence ; automata theory ; computer hardware ; computer networks ; computer programming ; computer systems ; embedded systems ; formal languages ; formal logic ; logic programming ; network protocols ; semantics ; software architecture ; software design ; software engineering ; theoretical computer science ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYA Mathematical theory of computation ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMZ Software Engineering ; thema EDItEUR::U Computing and Information Technology::UT Computer networking and communications ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering
    Language: English
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  • 4
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    Springer Nature | Springer
    Publication Date: 2024-04-14
    Description: This open access two-volume set LNCS 13371 and 13372 constitutes the refereed proceedings of the 34rd International Conference on Computer Aided Verification, CAV 2022, which was held in Haifa, Israel, in August 2022. The 40 full papers presented together with 9 tool papers and 2 case studies were carefully reviewed and selected from 209 submissions. The papers were organized in the following topical sections: Part I: Invited papers; formal methods for probabilistic programs; formal methods for neural networks; software Verification and model checking; hyperproperties and security; formal methods for hardware, cyber-physical, and hybrid systems. Part II: Probabilistic techniques; automata and logic; deductive verification and decision procedures; machine learning; synthesis and concurrency. This is an open access book.
    Keywords: architecting ; architecture verification and validation ; artificial intelligence ; computer programming ; computer science ; computer systems ; databases ; distributed computer systems ; embedded systems ; engineering ; formal languages ; formal logic ; linguistics ; mathematics ; model checking ; software architecture ; software design ; software engineering ; software quality ; theoretical computer science ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMZ Software Engineering ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence ; thema EDItEUR::U Computing and Information Technology::UT Computer networking and communications ; thema EDItEUR::U Computing and Information Technology::UY Computer science
    Language: English
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  • 5
    Publication Date: 2024-04-09
    Description: Radio communications in the range of 60 GHz enable multi-Gigabit/s network access in indoor environments. Due to the propagation characteristics of such signals only very short range radio transmission is feasible. In order to distribute these signals across large distances, analog transmission over optical fiber is considered. In this work, mode-locked laser diodes serve as optoelectronic oscillators for the generation of such signals. Their system-relevant properties are studied in detail.
    Keywords: T1-995 ; millimeter wave communications ; mode-locked lasers ; wireless personal area networks ; radio-over-fiber ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 6
    Publication Date: 2024-04-09
    Description: Im Rahmen dieser Arbeit wurde eine Plattform zur individuellen Ansteuerung einer Vielzahl thermisch aktivierter Mikroventile und aktoren, auf Grundlage eines Phasenüberganges, zum Einsatz in der Mikrofluidik entwickelt. Ventile dienen dazu den Fluidstrom in komplexen mikrofluidischen Systemen, aus Einsatzgebieten wie der Biologie, Chemie oder Biotechnologie, zu manipulieren. Mit steigender Komplexität der Mikrosysteme steigt auch die Anzahl der benötigten, individuell steuerbaren Mikroventile.
    Keywords: T1-995 ; thermisch ; Mikrofluidik ; Mikroventile ; Phasenübergang ; Mikroaktoren ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 7
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: In this work, the realisation of an adaptive driving beam is examined that is based on the motion prediction of the ego vehicle and other traffic participants. Furthermore, light functions are developed and analysed regarding their effectiveness that project situation adaptive recommendations for action in front of the vehicle regarding a turn or lane change intention of the driver.
    Keywords: T1-995 ; Trajektorienprädiktion ; maneuver detection ; trajectory prediction ; predictive light functions ; Lichtbasierte Assistenzsysteme ; Prädiktive Lichtfunktionen ; Manöverdetektion ; light-based assistance systems ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 8
    Publication Date: 2024-04-09
    Description: Das Wiederherstellen der Akkommodationsfähigkeit des Auges bei Presbyopie oder nach Kataraktoperationen stellt derzeit eine der größten Herausforderungen der Augenheilkunde dar. Das Künstliche Akkommodationssystem ermöglicht die dauerhafte Wiederherstellung der Akkommodationsfähigkeit. In der vorliegenden Arbeit wird ein neues Konzept für die bedarfsgerechte Energieversorgung des Künstlichen Akkommodationssystems erstellt.
    Keywords: T1-995 ; Akkommodationssystem bedarfsgerecht Energieversorgung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 9
    Publication Date: 2024-04-05
    Description: Ein wesentlicher Aspekt dieser Arbeit ist die Suche nach besseren Donorkomponenten für die, mit Hilfe der Kokondensationstechnik dargestellten, Germaniummonohalogenidlösungen.Des Weiteren befaßt sich die Arbeit mit der Folgechemie von metalloiden Germaniumclustern sowohl in Lösung, als auch in der Gasphase.
    Keywords: QD1-999 ; metalloid ; Kokondensation ; Cluster ; Germanium ; Folgechemie ; thema EDItEUR::P Mathematics and Science::PN Chemistry
    Language: German
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  • 10
    Publication Date: 2024-04-09
    Description: The aim of this work was to identify the patterns that can induce heating around implanted cardiac pacemakers during MRI and to develop strategies to counteract them. Two approaches were taken: computer simulations of the occurring electromagnetic field distributions and in-vitro experiments using phantoms in real MRI devices, both for conventional bore-hole and new open MRI systems. Using the open MRI, the observed heating could be reduced significantly.
    Keywords: T1-995 ; pacemaker ; MRI ; numerical field calculation ; biomedical engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 11
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: In this work, the realization limits of an impulse-based Ultra-Wideband (UWB) localization system for indoor applications have been thoroughly investigated and verified by measurements. The analysis spans from the position calculation algorithms, through hardware realization and modeling, up to the localization experiments conducted in realistic scenarios. The main focus was put on identification and characterization of limiting factors as well as developing methods to overcome them.
    Keywords: T1-995 ; localization ; UWB ; transceiver ; positioning ; ultra-wideband ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 12
    Publication Date: 2024-04-09
    Description: Teleskopierbare, spielbehaftete Hubgerüste von Gabelstaplern werden während eines Arbeitszyklus oftmals zu Schwingungen angeregt. Die charakteristischen Schwingungseigenschaften, bedingt durch das usammenwirken von Spiel, auskragender Last und Schwerkraft, werden experimentell untersucht und durch ein 5-Massen-Modell sehr gut abgebildet.Sowohl mit aktiven als auch mit passiven Maßnahmen lassen sich die Schwingungen schnell und deutlich reduzieren.
    Keywords: T1-995 ; Maschinenelement ; Spiel ; Schwingungsverhalten ; Gabelstapler ; Flurförderer ; Hubgerüst ; Schwingungsdämpfer ; Schwingungstilger ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 13
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    Springer Nature | Springer
    Publication Date: 2024-04-14
    Description: This open access two-volume set constitutes the proceedings of the 26th International Conference on Tools and Algorithms for the Construction and Analysis of Systems, TACAS 2020, which took place in Dublin, Ireland, in April 2020, and was held as Part of the European Joint Conferences on Theory and Practice of Software, ETAPS 2020. The total of 60 regular papers presented in these volumes was carefully reviewed and selected from 155 submissions. The papers are organized in topical sections as follows: Part I: Program verification; SAT and SMT; Timed and Dynamical Systems; Verifying Concurrent Systems; Probabilistic Systems; Model Checking and Reachability; and Timed and Probabilistic Systems. Part II: Bisimulation; Verification and Efficiency; Logic and Proof; Tools and Case Studies; Games and Automata; and SV-COMP 2020.
    Keywords: Software Engineering/Programming and Operating Systems ; Special Purpose and Application-Based Systems ; Computer System Implementation ; Control Structures and Microprogramming ; Mathematics of Computing ; open access ; specification and verification techniques ; software and hardware verification ; SAT and SMT solving ; theorem proving ; model checking ; static and dynamic program analysis ; testing ; system construction and transformation techniques ; tool environments and tool architectures ; abstraction techniques for modeling and verification ; compositional and refinement-based methodologies ; mathematics ; software engineering ; software design ; architecting ; software architecture ; embedded systems ; automata theory ; linguistics ; Software Engineering ; Operating systems ; Expert systems / knowledge-based systems ; Systems analysis & design ; Algorithms & data structures ; Mathematical theory of computation ; Maths for computer scientists ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMZ Software Engineering ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence::UYQE Expert systems / knowledge-based systems ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYD Systems analysis and design ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMB Algorithms and data structures ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYA Mathematical theory of computation
    Language: English
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  • 14
    Publication Date: 2024-04-09
    Description: This work has arisen out of the strong demand for a superior power-added efficiency (PAE) of AlGaN/GaN high electron mobility transistor (HEMT) high-power amplifiers (HPAs) that are part of any advanced wireless multifunctional RF-system with limited prime energy. Different concepts and approaches on device and design level for PAE improvements are analyzed, e.g. structural and layout changes of the GaN transistor and advanced circuit design techniques for PAE improvements of GaN HEMT HPAs.
    Keywords: T1-995 ; MMIC design ; power amplifier ; AlGaN/GaN HEMT ; X-band ; power-added efficiency ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 15
    Publication Date: 2024-04-09
    Description: In diesem Buch wird ein drahtloses OFDM-Kommunikationssystem für Hochgeschwindigkeitszüge analysiert, der Funkkanal modelliert und das Modell durch Messungen verifiziert. Mit Hilfe des Kanalmodells können drahtlose Zugkommunikationssysteme unter Berücksichtigung der hohen Zeitvarianz in optimaler Weise ausgelegt werden. Aus der Untersuchung verschiedener Einflüsse werden richtungsweisende Regeln für die Auslegung solcher Systeme abgeleitet und ein entsprechendes OFDM-System vorgeschlagen.
    Keywords: T1-995 ; Zeitvarianz ; OFDM-System ; Funkkanalmodellierung ; Hochgeschwindigkeitszüge ; drahtlose Kommunikation ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 16
    Publication Date: 2024-04-09
    Description: Validation and verification are central activities of product engineering. The aim of these activities is to predict and evaluate the future system behaviour of the product in development. This is achieved by conducting tests and interpreting the generated measurement data. This work introduces an ontology-based method for increasing the efficiency and effectively of innovative automotive development projects, especially in cases where an organisational knowledge base does not exist yet.
    Keywords: T1-995 ; Wissensmanagement ; Validierung ; ProduktentwicklungAutomobile technology ; knowledge management ; Fahrzeugtechnik ; validation ; product engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 17
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: Für Verbindungen im Holzbau werden häufig selbstbohrende Holzschrauben eingesetzt. Diese können oft mit geringen Abständen untereinander und zu den Bauteilrändern angeordnet werden. Durch die Einhaltung von Mindestabständen und Mindestholzdicken soll hierbei ein Versagen des Holzes durch Aufspalten verhindert werden. Im Rahmen dieser Arbeit wurde ein Verfahren entwickelt, mit dem sich die Anforderungen an Abständen und Holzdicken effizienter und zuverlässiger als bisher bestimmen lassen.
    Keywords: T1-995 ; Mindestabstände ; Holzschrauben ; Holzbau ; Verbindungen ; Spaltversagen ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 18
    Publication Date: 2024-04-09
    Description: Fracture of storage particles is considered to be one of the major reasons for capacity fade and increasing power loss in Li-ion batteries. In this work, we tackle the problem by merging a coupled model of mechanical stress and diffusion of Li-ions with a phase field description of an evolving crack. The novel approach allows us to study the evolution of the Li concentration together with the initiation and growth of a crack in an arbitrary geometry and without presuming a specific crack path.
    Keywords: T1-995 ; Lithium-Diffusion ; Lithium-Ionen-BatterienCrack Growth ; Storage Particles ; Risswachstum ; Phasefield ; Li-Diffusion ; Phasenfeld ; Li-Ion-Batteries ; Speicherpartikel ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 19
    Publication Date: 2024-04-09
    Description: Within the bioliq®-process, the organic phase of straw pyrolysis condensates can be gasified directly, while the aqueous phase can be mixed with char to form a slurry, which also can be gasified. For production and storage, several mixers and stirrers are examined. Grinding the porous and elongated char particles decelerates sedimentation and also reduces the viscosity. Thus, higher concentrated slurries can be mixed, which leads to higher stability.
    Keywords: T1-995 ; Pyrolysekondensat ; Vergasungchar ; pyrolysis condensate ; gasification ; Suspension ; Mischen ; slurry ; mix ; Koks ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 20
    Publication Date: 2024-04-09
    Description: The oscillating disc cutting process has shown excellent results in precisely removing area-limited-concrete structures. Due to the highly dynamic oscillatory motion, the stiffness requirements to the tool structure and the basic machine have to be considered, which is the main purpose of this work. Based on these results, a concept of a mechanical adaption of the oscillating disc cutting process to an excavator attachment tool will be developed and tested on a prototype.
    Keywords: T1-995 ; system analysis ; MobilbaggerDisc Cutting ; Werkzeugadaption ; Systemanalyse ; stiffness requirement ; Hinterschneidtechnik ; Steifigkeitsanforderung ; Wheeled Excavator ; tool adaption ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 21
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: We study the potential of the silicon-organic hybrid (SOH) platform for integrated optics. The unique properties of selected organic materials are added to silicon devices made with CMOS-based processes. We investigate the feasibility of this approach by making prototypes of key components in form of photonic integrated circuits: SOH lasers and SOH modulators are designed, fabricated, post-processed, and characterized. Application scenarios are identified.
    Keywords: T1-995 ; CMOS ; Modulator ; laser ; modulator ; Silizium-Photonik ; Laser ; Detektor ; CMOSsilicon photonics ; detector ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 22
    Publication Date: 2024-04-09
    Description: In dieser Arbeit wird ein Simulationswerkzeug zur Untersuchung des komplexen elektromechanischen Verhaltens von Ferroelektrika entwickelt. Es wird ein neues Materialmodell vorgestellt, das die elektrische Leitfähigkeit der Ferroelektrika berücksichtigt. Anhand von anwendungsnahen Beispielen wird der Einfluss der elektrischen Leitfähigkeit untersucht.
    Keywords: T1-995 ; Ferroelektrika ; Materialmodell ; Finite-Elemente-Methode ; elektrische Leitfähigkeit ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 23
    Publication Date: 2024-04-09
    Description: In der Forschungsarbeit wird die Verwendung von Nadelholz statt Buchenholz im weniger biegebeanspruchten Kernbereich von Brettschichtholz untersucht. Es wird anhand von Versuchen und mithilfe von numerischen Methoden gezeigt, dass sich mit so genannten Hybridträgern hohe Festigkeitswerte und geringere Materialkosten als bei reinen Buchenträgern miteinander vereinen lassen.
    Keywords: T1-995 ; Fichte ; Tan ; Brettschichtholz ; Keilzinkung ; Vollwandträger ; Rotbuche ; Biegefestigkeit ; Nadelholz ; Buchenholz ; Fichtenholz ; Elastizitätsmodul ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 24
    Publication Date: 2024-04-09
    Description: In dieser Arbeit wird eine gleisselektive, bordautonome Ortungsplattform für Schienenfahrzeuge unter Verwendung diversitärer, redundanter Sensoren vorgestellt. Durch die Verwendung eines neuartigen Wirbelstrom-Sensorsystems in Kombination mit inertialer Sensorik, GPS und einer digitalen Streckenkarte werden die Anforderungen an eine sicherheitsrelevante Ortungsplattform erfüllt. Hierbei werden unterschiedliche Fusionsansätze hergeleitet und anhand realer Messdaten bewertend verglichen.
    Keywords: T1-995 ; Map-Matching ; Schienenfahrzeuge ; Ortung ; Weichenerkennung ; Kalman-Filter ; Wirbelstrom-Sensorsystem ; Integriertes Navigationssystem ; Informationsfusion ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 25
    Publication Date: 2024-04-09
    Description: In this book, stagnation flows on a catalytic porous plate is modeled one-dimensionally coupled with multi-step surface reaction mechanisms and molecular transport (diffusion and conduction) in the flow field and in the porous catalyst. Internal and external mass transfer limitations as well as possible reaction routes in the catalyst are investigated for CO oxidation, WGS reaction, partial and steam reforming of methane over Rh/Al?O?.
    Keywords: T1-995 ; Heterogeneous catalysis ; Stofftransportlimitierungen ; Reaktion-DiffusionStagnation-flow reactor ; Staupunktreaktor ; Reaction-Diffusion ; Heterogenen Katalyse ; External and internal mass transfer limitation ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 26
    Publication Date: 2024-04-09
    Description: The present work delivers a versatile, accurate and reliable wind tunnel facility that is particularly developed to test different flow control techniques for drag reduction in precisely adjustable test conditions. Skin friction changes of 0.4% are resolved, which is comparable to the most accurate reported studies in liquids. this high accuracy is verified through a comprehensive uncertainty analysis. Subsequently, various passive and active flow control strategies are investigated.
    Keywords: T1-995 ; Riblets ; Kanalströmung ; pressure measurement ; riblets ; accuracy ; Messgenauigkeitchannel flow ; drag reduction ; Wandreibung ; Druckmessung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 27
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: ECG recordings provide diagnostic relevant information on the de- and repolarisation sequences of the heart. A modification of the repolarisation sequence is assumed to cause Torsades de Pointes. Especially drug induced effects on the repolarisation processes are in focus, since some non-cardiac drugs have been associated with sudden cardiac death in the 1990s. The analysis of the ventricular repolarisation using a set of parameters depicting the morphology of the T-wave is introduced in this work. Therefore, new methods of fully automatic patient-specific QRS detection, beat classification and precise T-wave delineation are presented. Using these methods, medical studies are investigated regarding the modification of the T-wave by different compounds. Also the impact of the heart rate on the morphology of the T-wave is part of this research.The reliable identification of ventricular ectopic beats allows an analysis of the influence of these beats on subsequent heart beats. It turned out that the morphology of subsequent heart beats can significantly be changed. This might give new information on the proarrythmical risk of ventricular ectopic beats.
    Keywords: T1-995 ; QT interval ; QT prolongation ; T wave ; Repolarisation ; HRT ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 28
    Publication Date: 2024-04-09
    Description: Heutige Architekturen von PLM-Lösungen sind überwiegend Client-Server orientiert. Mittelfristig wird sich hier eine offene, flexible-Architektur wie Service-orientierte Architekturen (SOA) durchsetzen. Dabei werden die PLM-Funktionen als Services zur Ausführung prozessrelevanter Tätigkeiten angeboten. Daraus ergibt sich ein service-basierter Ansatz für das PLM. Die Kombination von PLM und SOA kann so Unternehmen helfen, ihre bestehenden Infrastrukturen im Laufe der Zeit schrittweise aufzubauen.
    Keywords: T1-995 ; Produktdatenmanagement Integration SOA PDM PLM ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 29
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: Ziel dieser Arbeit ist die Entwicklung eines metallischen Nanoaktors, dessen mechanisches Verhalten über magnetische Felder gesteuert werden kann. Mit Hilfe der in der Mikrotechnik etablierten Technologien werden Titan-Nanobiegebalken realisiert, dessen Vorderenden mit einem magnetischen Element funktionalisiert sind. Prozessablauf und Charakterisierungsmethoden werden ausführlich beschrieben und liefern wertvolle Erkenntnisse für den Betrieb solcher Nanoaktoren in zukünftigen Nanosystemen.
    Keywords: T1-995 ; Nanoaktoren ; Magnetpartikel ; Nanostrukturierung. Nanobalken ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 30
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: In dieser Arbeit werden zwei Verfahren zur operativen Planung und Steuerung von Crossdocking-Zentren (CDZ) entwickelt und bewertet. Es wird erläutert, wie externe Logistikdienstleister zur Steuerung von CDZ eingesetzt werden können und es werden sowohl ein zentral-hierarchischer als auch ein dezentral-heterarchischer Planungsansatz abgeleitet. Hierdurch lassen sich die Kosten in der Tourenplanung deutlich senken und es wird ein reibungsloser Ablauf der logistischen Prozesse im CDZ ermöglicht.
    Keywords: T1-995 ; Auktionstheorie ; Vickrey-Auktion ; Logistik ; Logistikplanung ; Tourenplanung ; Logistikunternehmen ; Ressourcenal ; Gemischt-ganzzahlige Optimierung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 31
    Publication Date: 2024-04-09
    Description: Um Brennstoffzellen mit flüssigen Brennstoffen zu betreiben, müssen diese fast schwefelfrei sein. Die Arbeit stellt ein neuartiges Verfahren zur Entschwefelung vor, bei dem nur der für die Brennstoffzelle bestimmte Teil des Einsatzstroms verdampft und in der Gasphase mit rezykliertem Wasserstoff aus der Brenngaserzeugung entschwefelt wird. Schwerpunkt ist die experimentelle Untersuchung der hydrierenden Entschwefelung von teilverdampftem Kerosin und Heizöl.
    Keywords: T1-995 ; Hydrierende Entschwefelung ; Brennstoffzelle ; Kerosin ; Heizöl ; Teilverdampfung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 32
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: Dynamische Systeme sind durch die Angabe des Zeitverlaufs ihrer Zustandsvariablen vollständig beschreibbar. Diese Form ist jedoch für eine mathematische Bearbeitung ungeeignet. Die Datenmenge reduziert sich um ein vielfaches und eine mathematische Behandlung wird ermöglicht, wenn zur Beschreibung der dynamischen Systeme charakteristische Größen herangezogen werden.In dieser Arbeit werden mit der phänomenologischen Herangehensweise durch eine Untersuchung der Verteilungsdichten die Bifurkationen in stochastischen dynamischen Systemen beschrieben.
    Keywords: T1-995 ; Lineares dynamisches System ; Radsatz ; Fokker-Planck-Gleichung ; Stochastisches dynamisches System ; Nichtlineares dynamisches System ; Querdynamik ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 33
    Publication Date: 2024-04-09
    Description: Mikrowellen bewirken direkt im Inneren des zu prozessierenden Materials eine schnelle und energiesparende Heizung. In Kombination mit dem Durchlaufbetrieb wird eine besonders gleichmäßige Prozessierung sowie eine verbesserte Integration in den Produktionsprozeß erreicht. Es wird beschrieben, wie sich solche Applikatoren in konsistenter Weise modellieren lassen. Dies umfaßt die gekoppelte elektromagnetische und thermische Feldberechnung unter Berücksichtigung eines simultanen Materialvorschubs.
    Keywords: T1-995 ; Mikrowellenprozessierung Materialprozessierung Durchlaufbetrieb Modellierung Feldtheorie ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 34
    Publication Date: 2024-04-09
    Description: In this work, a flexible biosensor platform based on impedance spectroscopy and comprising of gold electrodes, polymeric flow cells and a suitable surface modification were developed. Initially, several surface modification techniques described in literature were implemented and optimized for impedimetric biosensors but their individual limitations rendered them unsuitable for this biosensor platform. A novel method based on photobleaching was developed and tested showing satisfactory results.
    Keywords: T1-995 ; Mikrofluidik ; electrochemical impedance spectroscopy ; Oberflächenmodifikation ; Biosensor ; surface modification ; photobleaching ; PhotobleichungBiosensor ; microfluidics ; Elektrochemische Impedanzspektroscopie ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 35
    Publication Date: 2024-04-09
    Description: Due to their high energy conversion efficiencies and low emissions, Solid Oxide Fuel Cells (SOFCs) show promise as a replacement for combustion-based electrical generators at all sizes. Further increase of SOFC efficiency can be achieved by microstructural optimization of the oxygen-ion conducting electrolyte and the mixed ionic-electronic conducting cathode. By application of nanoscaled thin films, the exceptionally high efficiency allows the realization of mobile SOFCs.
    Keywords: T1-995 ; grain-size effect ; nanoscaled thin film ; solid oxide fuel cell (SOFC) ; cathode ; electrolyte ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 36
    Publication Date: 2024-04-09
    Description: This work describes the influence of catalytic converter heating strategies on the emissions during heating operation, as well as during the subsequent load demand at different engine start temperatures. A novel strategy is presented, that provides heating of the combustion chamber, without decreasing the catalyst converter heating significantly. The studies were carried out on a gasoline engine. Emissions were examined in detail. In addition, the flame propagation is evaluated experimentally.
    Keywords: T1-995 ; Katalysatorheizen ; cold start ; combustion process ; Flammenausbreitung ; particulate emission ; Partikelemissionen ; Brennverfahren ; Kaltstart ; flame Development ; catalytic converter heating ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 37
    Publication Date: 2024-04-09
    Description: Within this book fabrication processes for high-quality Josephson junctions based on niobium and aluminum oxide as well as niobium nitride and aluminum nitride on various substrates are discussed. Techniques for achieving a planar chip topography and sub-µm lateral dimensions, aiding the realization of sophisticated Josephson devices such as SQUIDs, flux-flow oscillators and long Josephson junctions with artificial phase discontinuities, are presented in detail.
    Keywords: T1-995 ; Superconductor ; Quantum ; Multilayer ; Cryogenics ; Josephson ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 38
    Publication Date: 2024-04-09
    Description: Based on the Somatic Marker Hypothesis, an attempt is made to measure the anticipation of risky traffic situations by means of the electrodermal activity. The results indicate that the strength of the anticipatory electrodermal activity is systematically related to situational factors of a traffic situation. In addition, a model was derived that postulates an inverted U-shaped relationship between driver’s experience and anticipatory electrodermal activity.
    Keywords: T1-995 ; somatic markers ; Risikoantizipation ; driver-vehicle-interaction ; Hautleitfähigkeit ; Modell der erfahrungsabhängigen somatischen Aktivierung ; risk anticipation ; electrodermal activity ; Somatische Marker ; Fahrer-Fahrzeug-Interaktion ; model of experience-dependent somatic activation ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 39
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: Anhand von Kornwachstumsexperimenten wird das Verhalten von Korngrenzen in Strontiumtitanat im Temperaturbereich zwischen 1100°C und 1600°C untersucht. Die Ergebnisse werden unter Zuhilfenahme hochauflösender und analytischer Transmissionselektronenmikroskopie diskutiert. Einflüsse von Strontium-Titan-Verhältnis, Dotierungselementen und Verunreinigungen werden untersucht. Im Kornwachstumsverhalten auftretende Unstetigkeiten werden durch die Anisotropie der Grenzflächenenergie erklärt.
    Keywords: T1-995 ; Strontiumtitanat Transmissionselektronenmikroskopie Korngrenzen Anisotropie Facettierung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 40
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: Collision avoidance systems like emergency braking assist systems have demonstrated their effectiveness in increasing the safety of vehicle passengers in various studies. To further increase the effectiveness of collision avoidance systems, the exploitation of the lateral free space by evasive maneuvers is being investigated in this book. This work focuses on methods for integrated trajectory planning and vehicle dynamics control in collision avoidance scenarios by combined evasion and braking.
    Keywords: T1-995 ; Fahrdynamikregelung ; model predictive control ; Collision Avoidance System ; Modelprädiktive Regelung ; Kollisionsvermeidung ; Trajectory Planning ; Driver Assistance System ; Fahrassistenzsystem ; Trajektorienplanung ; Vehicle Dynamics Control ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 41
    Publication Date: 2024-04-09
    Description: The objective of this work is to provide an efficient solution to analyze and optimize global dynamic vehicle behavior of wheel loaders in the areas of vibration comfort, vehicle dynamics and tipping safety. To quantify the vehicle’s behavior several virtual tests and maneuvers are automatically performed by a full-vehicle simulation model of the machine. The results are then analyzed and combined to provide objective measures representing the global dynamic vehicle behavior.
    Keywords: T1-995 ; wheelloader comfort dynamics tipping optimization ; Radlader Komfort Fahrdynamik Kippsicherheit Optimierung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 42
    Publication Date: 2024-04-09
    Description: Ein im normalen Betrieb geeignetes Material für Dieselrußpartikelfilter stellt Cordierit dar. Bei der Filterregeneration, die nötig ist um die im Betrieb akkumulierten Rußpartikel abzubrennen, kann es zu Reaktionen mit Aschebestandteilen kommen, wodurch der Filter geschädigt wird. Um dies zu verhindern, wird ein Schutzschichtmaterial identifiziert und ein Verfahren etabliert, womit die Porenkanäle des Filters beschichtet werden, um die durch
    Keywords: T1-995 ; Natriumzirkonphosphat ; Sol-Gel ; dünne Schichten ; Dieselrußpartikelfilter ; Cordierit ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 43
    Publication Date: 2024-04-09
    Description: In order to understand the current-voltage behaviour of a Lithium-Ion Battery, its impedance needs to be investigated in the low-frequency domain. This work deals with measurement, modelling and model validation in that low-frequency domain and introduces the Distribution-Function-of-Differential-Capacity (DDC) as a new tool for investigating capacity contributions of different particle sizes and particle types inside of a Lithium-Ion Battery.
    Keywords: T1-995 ; Lithium-Ion-Battery ; Lithium-Ionen-Batterie ; Distribution Function of Differential Capacity (DDC) ; Impedanz ; Batteriemodell ; Low-Frequency ; Verteilungsfunktion der differentiellen Kapazität (DDC) ; Battery-Model ; Niederfrequenz ; Impedance ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 44
    Publication Date: 2024-04-09
    Description: Tire properties show significant impact on the driving behavior of a modern passenger car. Today tires are being optimized in their driving function and adapted to the vehicle in close cooperation by vehicle and tire manufacturers. To meet all requirements, support of the test drive engineers by a tire test system based pre-selection, with help of a virtual evaluation method, becomes necessary. Therefore the root cause between driver, vehicle and tire characteristics has been examined.
    Keywords: T1-995 ; Fahrverhalten ; Fahrzeugbewegung ; Reifen ; Subjektivbeurteilung ; Objektivierung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 45
    Publication Date: 2024-04-09
    Description: Mixed ionic-electronic conducting (MIEC) ceramics as oxygen transport membranes (OTMs) can provide high oxygen permeation rates at comparably low energy demands. For this purpose, Ba?.?Sr?.?Co?.?Fe?.?O??? (BSCF) shows the best performance under ideal operating conditions. Thermal and chemical stability investigations, electrical behavior ?(T,pO?,t), and oxygen exchange parameter extraction by means of electrical conductivity relaxation resulted in a far better understanding of the BSCF system.
    Keywords: T1-995 ; electrochemical characterization ; thermische und chemische Stabilitätmixed ionic-electronic conductors ; oxygen transport membranes ; elektronische/ionische Mischleiter ; thermal and chemical stability ; Sauerstofftransportmembranen ; BSCF ; elektrochemische Charakterisierung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 46
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: The development of measures enhancing efficiency within a vehicle is very complex due to the interaction with other vehicle systems. Consequently, developers must be equipped with appropriate tools for successful execution of a development task. This book deals with ""simulation"" and ""complete vehicle test rig"" development tools for air conditioning systems in general and the efficient implementation and adaption of these two development tools for the fields of application of trucks.
    Keywords: T1-995 ; Entwicklungswerkzeuge ; Simulation ; PrüfstandAir Conditioning System ; Development Tools ; Klimatisierung ; Truck ; Nutzfahrzeuge ; Test Bench ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 47
    facet.materialart.
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: Die vorliegende Arbeit beschreibt ein Verfahren zur Fahrzeugdetektion anhand monoskopischer Videomerkmale. Aus den Bildern einer im Fahrzeug angebrachten Videokamera werden charakteristische Merkmale extrahiert.Diese Beobachtungen werden fusioniert und zeitlich verfolgt. Dabei kommen Joint Probabilistic Data Association- Filter zum Einsatz. Mehrere Bewegungsmodelle werden in einem Interacting Multiple Model-Verfahren verknüpft, um eine zuverlässige Verfolgung zu gewährleisten.
    Keywords: T1-995 ; Fahrerassistenzsystem ; Datenfusion ; Objektverfolgung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 48
    Publication Date: 2024-04-09
    Description: Ein Riss im Rotor ruft eine lokale Steifigkeitsänderung hervor. Die vorliegende Arbeit ermittelt die Steifigkeitsänderung einer angerissenen Welle. Dazu wird ein Kohäsivzonenmodell eingesetzt. Das Modell wurde für die erste Rissöffnungsmode bei ebenem Verzerrungszustand in Abhängigkeit der Mehrachsigkeit des Spannungszustandes (Triaxialität) entwickelt. Außerdemwird das Kohäsivzonenmodell bei einem eindimensionalen Kontinuumsrotor als FE Modell ausgeführt.
    Keywords: T1-995 ; Cohesive zone model ; cracked rotor ; stiffness variation ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 49
    Publication Date: 2024-04-09
    Description: Witterungsbedingte Effekte, insbesondere Regentropfen auf der Windschutzscheibe, führen zu einer starken Beeinträchtigung gegenwärtiger videobasierter Fahrerassistenzfunktionen. In dieser Arbeit wird ein Verfahren zur Erkennung von Regentropfen auf der Windschutzscheibe vorgestellt, das auf einer physikalischen und signaltheoretischen Regentropfen-Modellierung sowie der Betrachtung des Bildentstehungsprozesses in realen optischen Systemen basiert.
    Keywords: T1-995 ; Strahlenverfolgung ; Regentropfen ; Rekursive Zustandsschätzung ; Erkennung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 50
    Publication Date: 2024-04-09
    Description: Die virtuelle Inbetriebnahme ermöglicht die Vorwegnahme der steuerungstechnischen Inbetriebnahme von komplexen Förderanlagen an einem virtuellen Modell. In dieser Arbeit wird die Konzeption eines neuen Systems zur produktbegleitenden virtuellen Inbetriebnahme geschildert und dessen Umsetzung in Form eines neuen prototypischen Simulationssystems beschrieben. Durch die Umsetzung des entwickelten Konzeptes wurde eine durchgängige virtuelle Inbetriebnahme der betrachteten Förderanlagen erreicht.
    Keywords: T1-995 ; Fahrerloses Transportsystem ; Simulation ; Förderanlage ; Virtuelle Inbetriebnahme ; Elektrohängebahn ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 51
    Publication Date: 2024-04-09
    Description: Techniques based on numerical simulations have been applied to the analysis of the heat exchanger and the High Temperature Superconductor (HTS) module of HTS current leads. In the first case correlations have been derived for the meander flow geometry. In the second case steady state and transient thermal-electric models have been validated. Both techniques are used to design and optimize HTS current leads. The correlations were applied to a predictive analysis of the ITER HTS current leads.
    Keywords: T1-995 ; current lead ; Nuclear fusion ; High Temperature Superconductor ; Computational thermal Fluid Dynamics ; Numerical simulation ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 52
    Publication Date: 2024-04-09
    Description: Die Entwicklung und Implementierung neuer Ansätze für PLC-Systeme zur robusten Zählerfernabfrage wird ausgehend von Untersuchungen der Kanaleigenschaften diskutiert. Insbesondere robuste Synchronisationsverfahren stehen im Vordergrund der Betrachtungen. Auf der Basis von Simulationen werden Optimierungsansätze zur Verbesserung der Übertragungsqualität untersucht. Anhand der Verifikation des Systementwurfs werden Maßnahmen zur optimalen Implementierung der physikalischen Ebene hergeleitet.
    Keywords: T1-995 ; Energieversorgungsnetz ; OFDM ; Datenübertragung ; Nulldurchgangssynchronisation ; Zählerfernabfrage ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 53
    Publication Date: 2024-04-09
    Description: The work presents an attempt to improve the understanding of reactive drag reducing control of near-wall turbulence with respect to limitations present in a realistic application scenario. The reference reactive control scheme of opposition control is studied using direct numerical simulation through the consideration of various application oriented restrictions, i.e. local control application, limited spatial and temporal resolution of the scheme, sensor noise and control elements arrangement.
    Keywords: T1-995 ; turbulence control ; direct numerical simulation ; turbulent boundary layers ; Direkte Numerische Simulation ; Reibungsminderung ; drag reduction ; Turbulente Grenzschichten ; Turbulenzkontrolle ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 54
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    Springer Nature | Springer
    Publication Date: 2024-04-14
    Description: This open access State-of-the-Art Survey presents the main recent scientific outcomes in the area of reversible computation, focusing on those that have emerged during COST Action IC1405 "Reversible Computation - Extending Horizons of Computing", a European research network that operated from May 2015 to April 2019. Reversible computation is a new paradigm that extends the traditional forwards-only mode of computation with the ability to execute in reverse, so that computation can run backwards as easily and naturally as forwards. It aims to deliver novel computing devices and software, and to enhance existing systems by equipping them with reversibility. There are many potential applications of reversible computation, including languages and software tools for reliable and recovery-oriented distributed systems and revolutionary reversible logic gates and circuits, but they can only be realized and have lasting effect if conceptual and firm theoretical foundations are established first.
    Keywords: Logic Design ; Computer System Implementation ; Computer Communication Networks ; Special Purpose and Application-Based Systems ; Software Engineering ; Operating Systems ; open access ; reversible computation ; semantics of reversible computation ; formal methods ; models of computation ; circuit design ; simulation ; robotics ; debugging ; quantum computing ; wireless communications ; programming languages ; dependability ; modelling of biochemical systems ; computer networks ; engineering ; software engineering ; parallel processing systems ; theoretical computer science ; Computer architecture & logic design ; Systems analysis & design ; Network hardware ; Expert systems / knowledge-based systems ; Operating systems ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYF Computer architecture and logic design ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYD Systems analysis and design ; thema EDItEUR::U Computing and Information Technology::UK Computer hardware::UKN Network hardware ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence::UYQE Expert systems / knowledge-based systems ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMZ Software Engineering ; thema EDItEUR::U Computing and Information Technology::UL Operating systems
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  • 55
    Publication Date: 2024-04-09
    Description: Mit der steigenden Bedeutung des Kraftstoffverbrauchs von Fahrzeugen geriet in den letzten Jahren auch die elektrische Leistungsaufnahme eines Fahrzeugs in den Blickpunkt. Diese ist durch den Zuwachs von Umfang und Komplexität von automobilen Elektrik/Elektronik-Systemen über die letzten Fahrzeuggenerationen hinweg stark angestiegen. Die vorliegende Arbeit befasst sich daher mit Ansätzen zur Energieoptimierung automobiler Elektrik/Elektronik-Architekturen aus Sicht eines Fahrzeugherstellers.
    Keywords: T1-995 ; FlexRay ; Hardwaregestützte Energieoptimierung ; Automobile Elektrik/Elektronik-Architekturen ; Energieeffizienz ; eingebettete Systeme ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 56
    Publication Date: 2024-04-09
    Description: Wünschenswert für eine zielgerichtete Produktentwicklung ist ein Anforderungsmanagement als maßgeblicher Treiber über den gesamten Entwicklungszeitraum.Die vorliegende Arbeit liefert hierzu einen neuen, ganzheitlichen Ansatz, bei dem biologische Entwicklungsprozesse die Ausgangspunkte für ein Anforderungsmodell bilden. Im Fokus steht die Entstehung des Produkts über dessen Eigenschaften und Merkmale sowie deren Beziehungen untereinander. Beispielhaft wird dies an der Fahrzeugentwicklung gezeigt.
    Keywords: T1-995 ; Fahrzeugentwicklung ; Produktorganismus ; Produktentwicklung ; Anforderungsmanagement ; Produktanforderung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 57
    Publication Date: 2024-04-09
    Description: Ein Problem beim Fügen von Wolfram mit Stahl sind thermisch induzierte Spannungen. Der hier gewählte Ansatz zur Reduzierung dieser Spannungen ist der Einsatz einer funktional gradierten Zwischenschicht. Vier verschiedene Herstellungsverfahren wurden erprobt mit dem Ziel gradierten Wolfram/Stahl-Zwischenschichten zu realisieren. Nach erfolgreicher Produktion und Charakterisierung wurden die gradierten Schichten mit Stahl- bzw. Wolframvollmaterial mittels Diffusionsschweißen gefügt.
    Keywords: T1-995 ; Vakuum-Plasmaspritzen ; Stahl ; Diffusionsschweißen ; Wolfram ; Gradierung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 58
    Publication Date: 2024-04-09
    Description: Due to the low energy content of the high-voltage traction battery, the range of battery electric vehiclesis currently restricted. Compared to conventional vehicles, the range is significantly lower. Thus, using a battery electric vehicle everyday might result in a complex conflict of objectives between range, dynamic and comfort requirements.For this purpose, this study develops a holistic system approach, in order to implement and apply range-extending functionalities.
    Keywords: T1-995 ; Operation Strategy ; Optimierung ; Elektrofahrzeug ; Optimisation ; FunktionsarchitekturElectric Vehicle ; Gesamtfahrzeug ; Betriebsstrategie ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 59
    Publication Date: 2024-04-05
    Description: In der vorliegenden Arbeit wird die Anregungs/Abfrage-Photoelektronenspektroskopie auf die Untersuchung elektronischer Dynamik in massenselektierten Molekülionen unter Hochvakuum-Bedingungen angewendet, wodurch die Beobachtung intramolekularer elektronischer Relaxation unter Ausschluss jeglicher Wechselwirkung der untersuchten Teilchen zur umgebenden Matrix möglich ist.
    Keywords: QD1-999 ; Dianion ; Dynamik ; Gasphase ; Zeitauflösung ; Photoelektronenspektroskopie ; Phthalocyanin ; Fulleren ; Ab-initio-Rechnung ; thema EDItEUR::P Mathematics and Science::PN Chemistry
    Language: German
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  • 60
    Publication Date: 2024-04-05
    Description: In einer rußenden pulsierten Methan-Luft Diffusionsflamme werden Rußkonzentration, Partikelzahldichte, -radius, -temperatur und OH*-Emission bestimmt. Die pulsierte Flamme zeigt transiente Effekte, erhöhte mittlere Rußkonzentrationen und Ablösung der Flammenspitze. Ein analytisches Modell beschreibt Flammenkontur, Ablösung der Flammenspitze und den asymmetrischen Verlauf der OH*-Emission. Eine numerische Analyse auf Basis der Flamelettheorie gibt die nichtlinearen Effekte der Rußbildung wieder.
    Keywords: QD1-999 ; Verbrennung ; Laminare Strömung ; Methan ; Luft ; Ruß ; Pulsation ; thema EDItEUR::P Mathematics and Science::PN Chemistry
    Language: German
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  • 61
    Publication Date: 2024-04-09
    Description: In this book an efficient algorithm for estimating dense motion vector fields between different views of a scene is presented. The approach combines geometric constraints between two views of a static scene with a model to describe the apparent motion in the image plane. The estimation is performed using a maximum-a-posteriori-method yielding reliable results, which is demonstrated using challenging real world image sequences.
    Keywords: T1-995 ; Optischer Fluss ; Visuelle Odometrie ; Bewegungsvektorfeld ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 62
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    Springer Nature | Springer
    Publication Date: 2024-04-14
    Description: This Open Access book presents the results of the "Collaborative Embedded Systems" (CrESt) project, aimed at adapting and complementing the methodology underlying modeling techniques developed to cope with the challenges of the dynamic structures of collaborative embedded systems (CESs) based on the SPES development methodology. In order to manage the high complexity of the individual systems and the dynamically formed interaction structures at runtime, advanced and powerful development methods are required that extend the current state of the art in the development of embedded systems and cyber-physical systems. The methodological contributions of the project support the effective and efficient development of CESs in dynamic and uncertain contexts, with special emphasis on the reliability and variability of individual systems and the creation of networks of such systems at runtime. The project was funded by the German Federal Ministry of Education and Research (BMBF), and the case studies are therefore selected from areas that are highly relevant for Germany’s economy (automotive, industrial production, power generation, and robotics). It also supports the digitalization of complex and transformable industrial plants in the context of the German government's "Industry 4.0" initiative, and the project results provide a solid foundation for implementing the German government's high-tech strategy "Innovations for Germany" in the coming years.
    Keywords: Software Engineering ; Software Management ; Automotive Engineering ; Special Purpose and Application-Based Systems ; IT in Business ; Model-Driven Software Development ; Requirements Engineering ; Automotive Software Engineering ; Embedded Systems ; Open Access ; SPES Methodology ; Simulation ; Co-Design of Systems ; Business mathematics & systems ; Business applications ; Automotive technology & trades ; Automotive (motor mechanic) skills ; Expert systems / knowledge-based systems ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMZ Software Engineering ; thema EDItEUR::K Economics, Finance, Business and Management::KJ Business and Management::KJQ Business mathematics and systems ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TR Transport technology and trades::TRC Automotive technology and trades ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence::UYQE Expert systems / knowledge-based systems
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  • 63
    Publication Date: 2024-04-05
    Description: In dieser Arbeit wurden Geschwindigkeitskonstanten für den thermischen Zerfall von NCN und Allylamin unter verbrennungsrelevanten Bedingungen untersucht. Zerfallsreaktionen stickstoffhaltiger Verbindungen spielen zum Beispiel bei der Stickoxidbildung in Verbrennungsprozessen eine Rolle. Die Experimente wurden an einem Stoßrohr durchgeführt, an das ein ARAS-Aufbau oder ein FM-Spektrometer gekoppelt wurde. Die erhaltenen Ergebnisse wurden mit Hilfe der statistischen Reaktionstheorie analysiert.
    Keywords: QD1-999 ; Reaktionskinetik ; Atomresonanzabsorptionsspektroskopie ; Mastergleichung ; Stoßwellenuntersuchung ; Frequenzmodulationsspektroskopie ; thema EDItEUR::P Mathematics and Science::PN Chemistry
    Language: German
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  • 64
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    Springer Nature | Springer
    Publication Date: 2024-04-14
    Description: This open access book constitutes the proceedings of the 30th European Symposium on Programming, ESOP 2021, which was held during March 27 until April 1, 2021, as part of the European Joint Conferences on Theory and Practice of Software, ETAPS 2021. The conference was planned to take place in Luxembourg and changed to an online format due to the COVID-19 pandemic. The 24 papers included in this volume were carefully reviewed and selected from 79 submissions. They deal with fundamental issues in the specification, design, analysis, and implementation of programming languages and systems.
    Keywords: Programming Languages, Compilers, Interpreters ; Natural Language Processing (NLP) ; Software Engineering ; Logics and Meanings of Programs ; Computer Systems Organization and Communication Networks ; Compilers and Interpreters ; Computer Science Logic and Foundations of Programming ; Computer Engineering and Networks ; computer programming ; concurrency theory ; distributed computer systems ; formal logic ; lamdba calculi ; linguistics ; logic ; object-oriented programming ; parallel processing systems ; probabilistic programming ; process calculi ; program compilers ; semantics ; software design ; software quality ; theory ; types ; verification and validation ; Programming & scripting languages: general ; Compilers & interpreters ; Natural language & machine translation ; Computer programming / software engineering ; Computer architecture & logic design ; Computer networking & communications ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMX Programming and scripting languages: general ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMZ Software Engineering ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering ; thema EDItEUR::U Computing and Information Technology::UT Computer networking and communications
    Language: English
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  • 65
    Publication Date: 2024-04-05
    Description: Diese Arbeit befasst sich mit der Wasserdampfreformierung von Methan, Ethan, Propan, Butan und Alkanmischungen an einem mit Rhodium beladenen Wabenkatalysator, der Entwicklung eines mehrstufigen Reaktionsmechanismus dazu und dessen Validierung unter Verwendung numerischer Modelle. Simulationen mit dem Mechanismus erlauben, Einblicke in das molekulare Geschehen im Reaktor zu nehmen und Vorhersagen für ähnliche Reaktionssysteme abzugeben. Auch die Katalysatordeaktivierung wird untersucht.
    Keywords: QD1-999 ; Erdgas ; Wasserdampfreformierung ; numerische Simulation ; Rhodiumkatalysator ; Reaktionsmechanismus ; thema EDItEUR::P Mathematics and Science::PN Chemistry
    Language: German
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  • 66
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: In this work the electrical and optical properties of semi-transparent organic solar cells are investigated. For this purpose an optoelectronic simulation model is developed and simulated results and experimental data are compared to each other. Besides the efficiency of the solar cells this work puts a special emphasis on the color properties of the light, which is transmitted through the semi-transmitted solar cells.
    Keywords: T1-995 ; Numerische Simulation ; Semi-transparent solar cells ; Numerical simulation ; Color rendering index ; Organische Solarzellen ; Semi-transparente Solarzellen ; Farbwiedergabe IndexOrganic solar cells ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 67
    Publication Date: 2024-04-09
    Description: The topic of this publication is the design of two new set-based methods for the determination of the states of linear parameter-varying systems. These sets are computed by interval observers based on unknown but bounded inputs, outputs and parameters. The effectiveness of the methods is demonstrated by the state estimation of an induction motor that is achieved by combining the interval observers with a novel model of a voltage source inverter.
    Keywords: T1-995 ; Intervallbeobachter ; Zustandsschätzung ; Asynchronmaschine ; induction motor ; voltage source inverter ; interval observer ; state estimation ; linear parameter-varying systems ; Lineare parametervariante Systeme ; Wechselrichter ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 68
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    Springer Nature | Springer
    Publication Date: 2024-04-14
    Description: This open access two-volume set constitutes the proceedings of the 27th International Conference on Tools and Algorithms for the Construction and Analysis of Systems, TACAS 2021, which was held during March 27 – April 1, 2021, as part of the European Joint Conferences on Theory and Practice of Software, ETAPS 2021. The conference was planned to take place in Luxembourg and changed to an online format due to the COVID-19 pandemic. The total of 41 full papers presented in the proceedings was carefully reviewed and selected from 141 submissions. The volume also contains 7 tool papers; 6 Tool Demo papers, 9 SV-Comp Competition Papers. The papers are organized in topical sections as follows: Part I: Game Theory; SMT Verification; Probabilities; Timed Systems; Neural Networks; Analysis of Network Communication. Part II: Verification Techniques (not SMT); Case Studies; Proof Generation/Validation; Tool Papers; Tool Demo Papers; SV-Comp Tool Competition Papers.
    Keywords: Theory of Computation ; Computer Systems Organization and Communication Networks ; Control Structures and Microprogramming ; Logic in AI ; Information Systems and Communication Service ; Computer Engineering and Networks ; architecture verification and validation ; artificial intelligence ; automata theory ; computer networks ; embedded systems ; formal languages ; formal logic ; linguistics ; mathematics ; model checking ; model-checking ; SAT and SMT solving ; signal processing ; software and hardware verification ; software architecture ; software engineering ; specification and verification techniques ; static and dynamic program analysis ; system construction and transforamtion techniques ; theorem-proving ; Computer science ; Mathematical theory of computation ; Computer networking & communications ; Algorithms & data structures ; thema EDItEUR::U Computing and Information Technology::UY Computer science ; thema EDItEUR::U Computing and Information Technology::UT Computer networking and communications ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence
    Language: English
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  • 69
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    Springer Nature | Springer
    Publication Date: 2024-04-14
    Description: This open access two-volume set constitutes the proceedings of the 27th International Conference on Tools and Algorithms for the Construction and Analysis of Systems, TACAS 2021, which was held during March 27 – April 1, 2021, as part of the European Joint Conferences on Theory and Practice of Software, ETAPS 2021. The conference was planned to take place in Luxembourg and changed to an online format due to the COVID-19 pandemic. The total of 41 full papers presented in the proceedings was carefully reviewed and selected from 141 submissions. The volume also contains 7 tool papers; 6 Tool Demo papers, 9 SV-Comp Competition Papers. The papers are organized in topical sections as follows: Part I: Game Theory; SMT Verification; Probabilities; Timed Systems; Neural Networks; Analysis of Network Communication. Part II: Verification Techniques (not SMT); Case Studies; Proof Generation/Validation; Tool Papers; Tool Demo Papers; SV-Comp Tool Competition Papers.
    Keywords: Theory of Computation ; Computer Systems Organization and Communication Networks ; Control Structures and Microprogramming ; Software Engineering ; Computer Engineering and Networks ; architecture verification and validation ; automata theory ; computer systems ; distributed computer systems ; embedded systems ; formal logic ; mathematics ; model checking ; model-checking ; parallel processing systems ; SAT and SMT solving ; software architecture ; static and dynamic program analysis ; theorem-proving ; verification and validation ; Computer science ; Mathematical theory of computation ; Computer networking & communications ; Algorithms & data structures ; thema EDItEUR::U Computing and Information Technology::UY Computer science ; thema EDItEUR::U Computing and Information Technology::UT Computer networking and communications ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMZ Software Engineering
    Language: English
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  • 70
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    Springer Nature | Springer
    Publication Date: 2024-04-14
    Description: This open access book constitutes the thoroughly refereed post-conference proceedings of the 6th International Workshop on Graph Structures for Knowledge Representation and Reasoning, GKR 2020, held virtually in September 2020, associated with ECAI 2020, the 24th European Conference on Artificial Intelligence. The 7 revised full papers presented together with 2 invited contributions were reviewed and selected from 9 submissions. The contributions address various issues for knowledge representation and reasoning and the common graph-theoretic background, which allows to bridge the gap between the different communities.
    Keywords: Artificial Intelligence ; Information Systems Applications (incl. Internet) ; Computer Communication Networks ; Mathematical Logic and Formal Languages ; Computer and Information Systems Applications ; Formal Languages and Automata Theory ; open access ; concept lattices ; data mining ; databases ; fca ; formal concept analysis ; formal languages ; formal logic ; information analysis ; information systems ; knowledge-based system ; model-based reasoning ; network protocols ; ontologies ; Information retrieval ; Internet searching ; Network hardware ; Mathematical theory of computation ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence ; thema EDItEUR::U Computing and Information Technology::UN Databases::UNH Information retrieval ; thema EDItEUR::U Computing and Information Technology::UK Computer hardware::UKN Network hardware ; thema EDItEUR::U Computing and Information Technology::UY Computer science
    Language: English
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  • 71
    Publication Date: 2024-04-09
    Description: This work is a comprehensive analysis of the decal process for production of catalyst coated membranes. Both the process window for the transfer of electrodes from decal foil onto membrane and the effects of the parameters of ink and transfer process on structure and function including process reproducibility shall be investigated. A major component of all those aspects is the selection, implementation and assessment of appropriate characterization methods.
    Keywords: T1-995 ; Elektrode ; Brennstoffzelle ; Charakterisierung ; Decal-Prozess ; Catalyst Coated Membrane ; Nafion kontinuierliche Herstellung ; Fuel Cell Electrode Nafion continuous production characterization ; Haftung ; Struktureigenschaften ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 72
    Publication Date: 2024-04-05
    Description: In this thesis the implementation of the explicitly correlated coupled-cluster singles-and-doubles model is presented. This tool is capable of efficiently calculating CCSD energies at the basis set limit with relatively small orbital basis sets. The implementation supports RHF, UHF and ROHF reference wave functions. The usefulness of the developed tool is illustrated with selected chemical applications.
    Keywords: QD1-999 ; coupled-cluster theory ; explicit correlation ; transition-state theory ; CCSD ; thema EDItEUR::P Mathematics and Science::PN Chemistry
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  • 73
    Publication Date: 2024-04-05
    Description: In der vorliegenden Arbeit wurde die selektive katalytische Reduktion von NOx mittels Ammoniak an eisenmodifizierten BEA-Zeolithen untersucht. Der Katalysator zeigt gegenüber dem kommerziellen V2O5/WO3/TiO2-System eine bessere tieftemperatur SCR-Aktivität, sowie eine bessere Beständigkeit gegen über hydrothermaler Alterung. Der Prototyp am Motorenprüfstand zeigt eine dem kommerziellen V2O5/TiO2-System identische SCR-Aktivität. Die vorliegenden Eisenspezies werden charakterisiert.
    Keywords: QD1-999 ; Ammoniak ; SCR ; NOx ; Reduktion ; Zeolith ; BEA ; thema EDItEUR::P Mathematics and Science::PN Chemistry
    Language: German
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  • 74
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: Diese Arbeit befasst sich mit verschiedenen nano- und mikrotechnologischen Konzepten zur Steigerung der Auskoppeleffizienz von OLEDs.Hierfür werden drei bottom-up-Ansätze, bei denen Nanopartikel während der OLED-Herstellung in die OLED eingebracht werden, beschrieben und zwei top-down-Ansätze vorgestellt, bei denen vor der eigentlichen OLED-Herstellung die Substratoberfläche durch Nano- und Mikrostrukturierung modifiziert wird.
    Keywords: T1-995 ; Effizienzsteigerung ; Nanostruktur ; Auskopplung ; OLED ; Streuung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 75
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    Springer Nature | Springer
    Publication Date: 2024-04-14
    Description: This 'Open Access' SpringerBrief provides foundational knowledge for designing autonomous, asynchronous systems and explains aspects of users relevant to designing for these systems, introduces principles for user-centered design, and prepares readers for more advanced and specific readings. It provides context and the implications for design choices made during the design and development of the complex systems that are part of operation centers. As such, each chapter includes principles to summarize the design implication that engineers can use to inform their own design of interfaces for operation centers and similar systems. It includes example materials for the design of a fictitious system, which are referenced in the book and can be duplicated and extended for real systems. The design materials include a system overview, the system architecture, an example scenario, a stakeholder analysis, a task analysis, a description of the system and interface technology, and contextualized design guidelines. The guidelines can be specified because the user, the task, and the technology are well specified as an example. Building Better Interfaces for Remote Autonomous Systems is for working system engineers who are designing interfaces used in high throughput, high stake, operation centers (op centers) or control rooms, such as network operation centers (NOCs). Intended users will have a technical undergraduate degree (e.g., computer science) with little or no training in design, human sciences, or with human-centered iterative design methods and practices. Background research for the book was supplemented by interaction with the intended audience through a related project with L3Harris Technologies (formerly Harris Corporation).
    Keywords: User Interfaces and Human Computer Interaction ; Software Engineering ; Autonomous Systems ; User-Centered Design ; Operation Centres ; Interface Technology ; Human-Centered Design ; Open Access ; User interface design & usability ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYZ Human–computer interaction::UYZG User interface design and usability ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMZ Software Engineering
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  • 76
    Publication Date: 2024-04-09
    Description: This book targets three fields of computational multi-scale cardiac modeling. First, advanced models of the cellular atrial electrophysiology and fiber orientation are introduced. Second, novel methods to create patient-specific models of the atria are described. Third, applications of personalized models in basic research and clinical practice are presented. The results mark an important step towards the patient-specific model-based atrial fibrillation diagnosis, understanding and treatment.
    Keywords: T1-995 ; atrial fibrillation ; radio-frequency ablation ; hemodialysis therapy ; atrial anatomy ; cardiac modeling ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
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  • 77
    Publication Date: 2024-04-09
    Description: The aim of this work was the development of new image processing methods for the analysis and optimization of rotary kiln processes. It is shown how the newly developed methods can be employed to analyze certain areas and effects of rotary kiln processes. Thereby gained new process information can be used in the process control to optimize rotary kiln processes in terms of economic and environmental objectives.
    Keywords: T1-995 ; image processing ; Drehrohrofen ; Bildverarbeitung ; computer vision ; process analysis ; Maschinelles Sehen ; process optimization ; Prozessoptimierungrotary kiln ; Prozessanalyse ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 78
    Publication Date: 2024-04-09
    Description: The incremental hole drilling method is used and further developed to determine residual stress states in thick film systems. The application limits regarding the applicability on film systems and the influence of the system's built up is examined by finite element simulations. A new evaluation method for the hole drilling method is proposed. Using this method residual stress states in thick film systems can be determined reliably in the coating, at the interface and also in the substrate.
    Keywords: T1-995 ; residual stress ; inkrementelle Bohrlochmethode ; coating systems ; Eigenspannungen ; Schichtverbundehole drilling method ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 79
    Publication Date: 2024-04-09
    Description: To estimate the reachable specific energy and power of aqueous Li-air batteries, a physical based model was developed, which for the first time includes the microstructure of Li-air cells. Parameters like solid/liquid interface resistances were quantified with help of a newly developed setup. Simulations based on the developed model revealed that even conservative estimations promise an increase in the specific energy by at least a factor of two compared to present Li-ion batteries.
    Keywords: T1-995 ; wässrige Lithium-Luft Batterie ; impedance spectroscopy ; equivalent circuit modelling ; Grenzflächen-Untersuchungen ; aqueous lithium-air battery ; Ersatzschaltbildmodellierung ; Impedanzspektroskopie ; interface investigations ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 80
    Publication Date: 2024-04-05
    Description: This computational study investigates diverse bonding situations in nanostructures (carbon nanotubes, fullerenes, metal compounds) spanning a broad range of energies. Weak, dispersive interactions and covalent metal-ligand and metal-metal bonding are examined. The results of efficient density functional calculations are compared to those of correlated wavefunction calculations on model systems. This rigorous validation is crucial in evaluating the balance between computational cost and accuracy.
    Keywords: QD1-999 ; open-cage fullerenes ; single-walled carbon nanotubes ; subvalent aluminium and magnesium compounds ; computational chemistry ; nanostructures ; thema EDItEUR::P Mathematics and Science::PN Chemistry
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  • 81
    Publication Date: 2024-04-09
    Description: The work describes a method for the determination of the conversion by radical photopolymerization of acrylic coatings that is suitable for an in situ monitoring during the coating process.The applied method is based on the 1620 nm overtone absorption of the acrylate end group. The capability of the sensor to discriminate between polymerized and unpolymerized coatings on metal substrates down to a coating thickness of less than 16µm is demonstrated and and proved by reference measurements.
    Keywords: T1-995 ; acrylate ; photopolymerization ; in-line monioring ; UV-coatings ; 1620 nm overtone absorption ; conversion monitoring ; IR-spectroscopy ; coating thickness ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
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  • 82
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: Environment perception with cameras is an important requirement for many applications for autonomous vehicles and robots. This work presents a stereoscopic omnidirectional camera system for autonomous vehicles which resolves the problem of a limited field of view and provides a 360° panoramic view of the environment. We present a new projection model for these cameras and show that the camera setup overcomes major drawbacks of traditional perspective cameras in many applications.
    Keywords: T1-995 ; Bildverarbeitung ; Autonomous Vehicles ; Rundumsicht ; Kamera-Kalibrierung ; Computer Vision ; Autonomes Fahren ; Robotik ; Camera-Calibration ; Omni-Vision ; Robotics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
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  • 83
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: Hot-electron bolometers are fast and low noise radiation detectors which can be used for many different applications. The aim of this work was to optimize the fabrication process of hot-electron bolometers and gain a deeper understanding of the underlying processes. To achieve this, the fabrication of the superconducting thin films was optimized and the superconducting properties of the films were analyzed. Detectors fabricated using the results showed a record value for the noise temperature.
    Keywords: T1-995 ; noise temperature ; superconductivity ; THz detector ; optimization ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
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  • 84
    Publication Date: 2024-04-09
    Description: Automatische Entscheidungs- und Entscheidungsunterstützungssysteme finden heute in vielen Bereichen der Technik und Wirtschaft ein breites Anwendungsfeld.Verschiedene Entscheidungskalküle, wie zum Beispiel die klassische oder die Fuzzy-Entscheidungstheorie, die subjektiven Wahrscheinlichkeiten oder die Evidenztheorie stehen in Konkurrenz. Ihre Unterschiede liegen in ihrer Reaktion auf eine Störung der Eingangsdaten.In dieser Arbeit wird dies genauer untersucht und dadurch ein Beitrag geleistet, in konkreten Situationen das beste Kalkül auswählen zu können.
    Keywords: T1-995 ; Entscheidungsunterstützungssystem ; Entscheidungskriterium ; Entscheidungsmodell ; Entscheidungstheorie ; Künstliche Intelligenz ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 85
    Publication Date: 2024-04-09
    Description: Bei Common-Rail-Motoren entstehen im Einspritzsystem Druckschwingungen, die die Kraftstoffmenge bei Mehrfacheinspritzungen verfälschen, was die entstehenden Emissionen nachhaltig verschlechtert.In dieser Arbeit wird ein neues Verfahren zur Korrektur der Einspritzmengen vorgestellt.
    Keywords: T1-995 ; Dieselmotor ; Motorische Entwicklung ; Drucksensor ; Druckwelle ; Magnetoelastischer Effekt ; Common-Rail-Einspritzanlage ; Emissionsverringerung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 86
    Publication Date: 2024-04-09
    Description: The 12th volume of Reports on Industrial Information Technology presents some selected results of research achieved at the Institute of Industrial Information Technology during the last two years.These results have contributed to many cooperative projects with partners from academia and industry and cover current research interests including signal and image processing, pattern recognition, distributed systems, powerline communications, automotive applications, and robotics.
    Keywords: T1-995 ; Powerline Communications ; Image Processing ; Robotics and autonomous systems ; Automotive ; Signal Processing ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
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  • 87
    Publication Date: 2024-04-05
    Description: Ultraschnelle Dynamik von verschiedenen organischen und anorganischen molekularen Systemen wurde unter Verwendung der zeitaufgelöste Anregungs-Abfrage-Technik in Kombination mit anderen spektroskopischen Methoden untersucht. Diese Dynamik umfasst, z.B. die Relaxationsprozesse in Metalloporphyrins, die Ladungstransfer zwischen Donor und Akzeptor durch DANN-Doppelhelix sowie die Dynamik von Ladungsträger in anorganischen nanostrukturierten zyklischen koordinierten Eisen-Lanthanoide Clustern.
    Keywords: QD1-999 ; Lanthanide ; Femtosecond Spectroscopy ; DNA ; Metalloporphyrin ; Ultrafast Dynamics ; thema EDItEUR::P Mathematics and Science::PN Chemistry
    Language: English
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  • 88
    Publication Date: 2024-04-09
    Description: We have developed a microfluidic two-layered channel system based on polycarbonate to investigate the transmigration of cancer cells under flow conditions and defined shear rate using live cell microscopy. The two layers are separated by a porous membrane with an endothelial monolayer on top of the membrane to mimic the blood vessel wall. To extend the measuring capabilities of our microfluidic chip, gold electrodes were structured on the membrane using optical lithography and chemical etching.
    Keywords: T1-995 ; membrane ; Krebszellen ; SensorikCancer cell ; Metastasierung ; Mikrofluidik ; Blutgefäß ; sensors ; Membran ; Blood vessel ; Impedanz ; microfluidic ; Impedance ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 89
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    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: Diese Arbeit befasst sich mit der numerischen Modellierung von monolithischen Autoabgaskatalysatoren unter Berücksichtigung verschiedener Transportmodelle in Gasphase und poröser Washcoatschicht sowie heterogener Reaktionsmechanismen, die auf Elementarreaktionen aufbauen. Hierbei wird der Einfluss mehrerer Modellparameter auf die Schadstoffumsätze im Katalysator mit Hilfe des Softwarepakets zur Simulation reaktiver Strömungen DETCHEM untersucht.
    Keywords: T1-995 ; CFD ; DETCHEM ; numerische Simulation ; Autoabgaskatalyse ; reaktive Strömungen ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 90
    Publication Date: 2024-04-05
    Description: The photoinduced dynamics of radical precursors in solution were investigated by means of femtosecond transient absorption spectroscopy assisted by quantum chemical calculations. The investigated systems show a wide range of excited state lifetimes ranging from tens of femtoseconds to nanoseconds. Thus, in the first case, on the investigated time scale the dynamics of the generated radicals can be additionally investigated. In the latter case only the excited singlet lifetime is observable.
    Keywords: QD1-999 ; femtosecond spectroscopy ; radical ; photolysis ; thema EDItEUR::P Mathematics and Science::PN Chemistry
    Language: English
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  • 91
    Publication Date: 2024-04-09
    Description: Zahlreiche Anwendungen erfordern das Lokalisieren der Emissionsquelle bestimmter Luftbeimengungen. Beispiele hierfür sind die Leckageer-kennung in Gefahrenstofflagern und die Luftqualitätsüberwachung von Deponien. Die Grundlage einer solchen Quellenlokalisierung stellen räumlich verteilte Online-Konzentrationsmessungen dar, die beispiels-weise durch so genannte Elektronische Nasen ermöglicht werden.In dem vorliegenden Buch werden ausgehend von einem geometrischen Zugang neue, zweistufige Verfahren zur Quellenlokalisierung für die Ausbreitung durch turbulente Diffusion und Advektion vorgestellt.Grundidee des geometrischen Zugangs ist es, zunächst für jeden Sensor die Menge aller Punkte zu bestimmen, auf der sich aus der Sicht des einzelnen Sensors die Quelle befinden kann. Durch Bilden der Schnittmenge für mehrere Sensoren lässt sich dann daraus der Quellort ermitteln. Die entwickelten Verfahren umgehen die numerischen Schwierigkeiten der klassischen ausgangsfehlerbasierten einstufigen Verfahren (Maximum-likelihood-Schätzung) und liefern zudem Aussagen zur Existenz und Eindeutigkeit von Lösungen, zur Lage von Mehrfachlösungen sowie zur geeigneten Platzierung der Sensoren für die Quellenlokalisierung.Zahlreiche Simulationen und Experimente in einem industriellen Chemikalienlager belegen die Leistungsfähigkeit der neuen Verfahren.
    Keywords: T1-995 ; Konzentrationsmessung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 92
    Publication Date: 2024-04-09
    Description: Das vorliegende Buch bietet eine umfassende Analyse des urbanen Mehrnutzer-MIMO-Funkkanals und stellt ein neuartiges geometrisch-stochastisches Kanalmodell für diesen Kanal vor. Besonderes Augenmerk liegt dabei auf der realistischen Modellierung der Zeitvarianz, Frequenz- und Richtungsselektivität sowie der Nutz- und Interferenzsignale im Netz. Zur Parametrierung und Verifikation des Modells werden Ray Tracing Simulationen sowie beidseitig richtungsaufgelöste Funkkanalmessungen eingesetzt.
    Keywords: T1-995 ; Kanalmodellierung ; geometrisch-stochastisch ; MIMO ; Mobilkommunikation ; intelligente Antennen ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 93
    Publication Date: 2024-04-09
    Description: Throughput in manual order picking systems with narrow aisles suffers from congestion as pickers cannot pass each other. Only few models incorporate congestion but they have very strict assumptions. In this work, queueing theory is used to analyze systems with traversal routing as well as different storage policies. The models are able to estimate throughput for many alternative designs in a relatively short amount of time. New guidelines for narrow-­aisle order picking systems are introduced.
    Keywords: T1-995 ; Order Picking ; Blocking ; Queueing Theory ; Congestion ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 94
    Publication Date: 2024-04-05
    Description: Verbrennungsreaktionen spielen im alltäglichen Leben und in der chemischen Industrie eine große Rolle. Wichtige Ziele bei Verbrennungsprozessen stellen die genaue Vorhersagbarkeit der strömungsmechanischen Wärme- und Stofftransportvorgänge und eine detaillierte Beschreibung des reaktiven Stoffumsatzes dar.In der vorliegenden Arbeit wird die numerische Simulation verwendet um technische Verbrennungssysteme zu untersuchen.
    Keywords: QD1-999 ; Verbrennung ; Reaktionskinetik ; Turbulente Strömung ; Numerische Strömungssimulation ; Flamelet-Modell ; Flamme ; Turbulenz ; Reaktionsm ; Chemische Reaktion ; thema EDItEUR::P Mathematics and Science::PN Chemistry
    Language: German
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  • 95
    facet.materialart.
    Unknown
    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: In dieser Arbeit wird ein neuartiges Konzept für die Gefahrenanalyse als Teil eines aktiven Sicherheitssystems entwickelt. Die Überwachung der Gefahrenbereiche erfolgt berührungslos, mit Infrarot-, kapazitiven Sensoren und einem Kamerasystem. Die einzelnen Informationen werden in einem Bayesschen Netz fusioniert. Parallel hierzu läuft die Gefahrenanalyse. Das System arbeitet zuverlässig und ausreichend schnell. Das vorgestellte System ermöglicht eine Steigerung der Arbeitssicherheit.
    Keywords: T1-995 ; Bildverarbeitung ; Sensortechnik ; Stochastisches Modell ; Datenfusion ; Objektverfolgung ; Hough-Transformation ; Bayes-Netz ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 96
    Publication Date: 2024-04-09
    Description: Plastic deformation influences the properties of tribological contacts. Therefore, it is important to understand the underlying dislocation mechanisms in tribological contacts. This work focuses on the formation mechanism of prismatic dislocation structures below an asperity and dislocation transport during sliding. Three dimensional Discrete Dislocation Dynamics simulations are conducted for a cubic face centered metal.
    Keywords: T1-995 ; Versetzung ; Tribologieplasticity ; dislocation ; Plastizität ; indentation ; Indentierung ; Reibkontakt ; tribology ; friction ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 97
    Publication Date: 2024-04-05
    Description: The treatise is the first coherent and comprehensive presentation of the important sub-field of ""technology entrepreneurship"" emphasizing the science and engineering perspectives. It is a presentation of technology entrepreneurship as an inter-cultural approach referring to the US and Germany. It integrates micro- and macro aspects referring to numerous cases of firms' foundations. The book provides also a new semi-quantitative approach to growth of new technology ventures.
    Keywords: QD1-999 ; Unternehmertum ; Unternehmer ; Technology ; Entrepreneurship ; Science ; Firmengründungen ; TechnikEntrepreneurs ; Firms' Foundations ; Wissenschaft ; thema EDItEUR::P Mathematics and Science::PN Chemistry
    Language: English
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  • 98
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    Unknown
    Springer Nature | Springer
    Publication Date: 2024-04-14
    Description: This open access book coherently gathers well-founded information on the fundamentals of and formalisms for modelling cyber-physical systems (CPS). Highlighting the cross-disciplinary nature of CPS modelling, it also serves as a bridge for anyone entering CPS from related areas of computer science or engineering. Truly complex, engineered systems—known as cyber-physical systems—that integrate physical, software, and network aspects are now on the rise. However, there is no unifying theory nor systematic design methods, techniques or tools for these systems. Individual (mechanical, electrical, network or software) engineering disciplines only offer partial solutions. A technique known as Multi-Paradigm Modelling has recently emerged suggesting to model every part and aspect of a system explicitly, at the most appropriate level(s) of abstraction, using the most appropriate modelling formalism(s), and then weaving the results together to form a representation of the system. If properly applied, it enables, among other global aspects, performance analysis, exhaustive simulation, and verification. This book is the first systematic attempt to bring together these formalisms for anyone starting in the field of CPS who seeks solid modelling foundations and a comprehensive introduction to the distinct existing techniques that are multi-paradigmatic. Though chiefly intended for master and post-graduate level students in computer science and engineering, it can also be used as a reference text for practitioners.
    Keywords: Software Engineering ; Cyber-physical systems, IoT ; Special Purpose and Application-Based Systems ; Computer Applications ; Computer-Aided Engineering (CAD, CAE) and Design ; Open Access ; Embedded and cyber-physical systems ; Software design engineering ; Model-driven software engineering ; Modelica ; Performance Analysis ; Design Languages ; System Description Languages ; System and Modeling ; DEVS ; Statecharts ; Petri Nets ; Multi-Paradigm Modeling ; AADL ; Concurrency Modeling ; Electrical engineering ; Cybernetics & systems theory ; Expert systems / knowledge-based systems ; Information technology: general issues ; Computer-aided design (CAD) ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMZ Software Engineering ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TH Energy technology and engineering::THR Electrical engineering ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence::UYQE Expert systems / knowledge-based systems ; thema EDItEUR::U Computing and Information Technology::UB Information technology: general topics ; thema EDItEUR::U Computing and Information Technology::UG Graphical and digital media applications::UGC Computer-aided design (CAD)
    Language: English
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  • 99
    facet.materialart.
    Unknown
    KIT Scientific Publishing
    Publication Date: 2024-04-09
    Description: Ziel dieser Arbeit war die Entwicklung integriert optischer Polymersensoren. Dazu wurden, auch durch Massenfertigungstechnologien, verschiedene Integrationskonzepte umgesetzt. Ein Schwerpunkt lag auf der Integration photonischer Kristallschichten mit Kanälen in Teflon und Polymethylmethacrylat. Zudem wurde die Geometrieoptimierung photonischer Kristallschichtkavitäten diskutiert. Hier wurde ein genetischer Algorithmus entwickelt, der eine bisher unbekannte Kavitätengeometrie liefert.
    Keywords: T1-995 ; Integrierte optische Sensoren ; Photonische Kristalle ; Optische Resonatoren ; Wellenleiter ; Polymere ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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  • 100
    Publication Date: 2024-04-09
    Description: In this work, different methods for material classification by hyperspectral images in the near infrared range are investigated. Specifically, the design of problem-adapted camera systems and the choice of optimal optical filters are discussed. In addition, a method for the fusion of multiple camera signals by spectral unmixing is presented.
    Keywords: T1-995 ; Klassifikation ; Materialvisual inspection ; material ; hyperspectral ; Inspektionssystem ; Sichtprüfung ; classification ; hyperspektral ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: German
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