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  • Books  (600)
  • thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues  (388)
  • bic Book Industry Communication::U Computing & information technology::UY Computer science  (111)
  • thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology  (101)
  • KIT Scientific Publishing  (600)
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  • Books  (600)
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  • 1
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    Millimeter-Wave Radio-over-Fiber Links based on Mode-Locked Laser Diodes (2021)
    KIT Scientific Publishing
    Details
    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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  • 2
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    Entwicklung einer Plattform zur individuellen Ansteuerung von Mikroventilen und Aktoren auf der Grundlage eines Phasenüberganges zum Einsatz in der Mikrofluidik (2021)
    KIT Scientific Publishing
    Details
    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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  • 3
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    Prädiktive Lichtfunktionen für volladaptive Scheinwerfersysteme (2021)
    KIT Scientific Publishing
    Details
    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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  • 4
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    Ein Prognosemodell für die Verwitterung von Sandstein (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Sandstone is the most common kind of natural stone used for historic buildings in Central Europe. During the past century a dramatic increase in different types of damage to historic buildings, monuments and sculptures made from natural stone has been observed. The present work deals with theoretical aspects of strength loss, fracture processes and degradation during the decay processes.
    Keywords: TA1-2040 ; Ermüdung ; weathering model ; Lebensdauer ; finite element methods ; durability ; Verwitterungsmodell ; FEMsandstone ; Sandstein ; fatigue behaviour ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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  • 5
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    Physics-Based Probabilistic Motion Compensation of Elastically Deformable Objects (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: A predictive tracking approach and a novel method for visual motion compensation are introduced, which accurately reconstruct and compensate the deformation of the elastic object, even in the case of complete measurement information loss. The core of the methods involves a probabilistic physical model of the object, from which all other mathematical models are systematically derived. Due to flexible adaptation of the models, the balance between their complexity and their accuracy is achieved.
    Keywords: QA75.5-76.95 ; stochastic estimation ; physics-based modeling ; robotics ; distributed parameter systems ; beating heart surgery ; video processing ; probabilistic models ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: English
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  • 6
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    Neues Konzept für die bedarfsgerechte Energieversorgung des Künstlichen Akkommodationssystems (2021)
    KIT Scientific Publishing
    Details
    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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  • 7
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    Magnetic Resonance Imaging on Patients with Implanted Cardiac Pacemakers (2021)
    KIT Scientific Publishing
    Details
    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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  • 8
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    Experimentelle Untersuchungen und Bemessungsansätze für faserverstärktes Mauerwerk unter Erdbebenbeanspruchungen (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Several experimental campaigns are conducted to find feasible fiber reinforcements for buildings under earthquake conditions. Therefore tensile tests for the description of the bonding behavior of the fibers, shear tests on three-stone small specimen, small static cyclic shear wall tests, bending tests of wall segments, large format dynamically loaded wall plates and five building experiments were performed under realistic time history acceleration. At the end a calculation method is proposed.
    Keywords: TA1-2040 ; masonry ; Erdbeben ; Verstärkungen ; fiber reinforced concrete ; Bemessung ; Faserverbundwerkstoffe ; earthquake ; Mauerwerk ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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  • 9
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    Realization Limits of Impulse-Radio UWB Indoor Localization Systems (2021)
    KIT Scientific Publishing
    Details
    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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  • 10
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    Untersuchung der Schwingungseigenschaften von teleskopierbaren Maschinenelementen mit Spiel am Beispiel eines Gabelstapler-Hubgerüstes (2021)
    KIT Scientific Publishing
    Details
    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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  • 11
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    Influence of elevated temperatures up to 100 °C on the mechanical properties of concrete (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Experiments to characterize the effects of moisture content and temperature on the mechanical properties of concrete were conducted. Based on these experiments, a new overall material model capable of predicting the mechanical behaviour of concrete subject to elevated temperatures up to 100 °C was developed. The material model estimates the time, temperature and moisture dependency of the compressive and tensile strength, creep and shrinkage of concrete.
    Keywords: TA1-2040 ; concrete ; Temperatur ; Beton ; Schwinden ; Temperature ; strength ; Kriechen ; creep ; Festigkeit ; shrinkage ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: English
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  • 12
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    System transferability of public hospital facility management between Germany and Iran (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: The subject of this PhD-thesis is the transferability of Facility Management (FM) by using the example of hospitals in Germany and Iran. The intention is to determine the status and significance of facility management in the project countries, to analyse similarities, semblances and differences in order to develop a system transferability model.
    Keywords: TA1-2040 ; health system ; facility management ; system transferability ; hospital ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
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  • 13
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    AlGaN/GaN-HEMT power amplifiers with optimized power-added efficiency for X-band applications (2021)
    KIT Scientific Publishing
    Details
    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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  • 14
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    Funkkanalmodellierung für OFDM-Kommunikationssysteme bei Hochgeschwindigkeitszügen (2021)
    KIT Scientific Publishing
    Details
    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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  • 15
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    Computer science approach to quantum control (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: This work considers several hypothetical control processes on the nanoscopic level and show their analogy to computation processes. It shows that measuring certain types of quantum observables is such a complex task that every instrument that is able to perform it would necessarily be an extremely powerful computer.
    Keywords: QA75.5-76.95 ; Informationstheorie ; Quanteninformatik ; Berechnungskomplexität ; Komplexitätstheorie ; Hauptsatz der Thermodynamik 2 ; Quantentheorie ; Entropie ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: English
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  • 16
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    Ontologie-basierte Definition von Anforderungen an Validierungswerkzeuge in der Fahrzeugtechnik (2021)
    KIT Scientific Publishing
    Details
    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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    Spaltverhalten von Holz beim Eindrehen von selbstbohrenden Holzschrauben (2021)
    KIT Scientific Publishing
    Details
    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
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    The Effects of Internal Stress and Lithium Transport on Fracture in Storage Materials in Lithium-Ion Batteries (2021)
    KIT Scientific Publishing
    Details
    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
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    Konditionierung von biogenen Energieträgern aus den Produkten der bioliq®-Schnellpyrolyse (2021)
    KIT Scientific Publishing
    Details
    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
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    Analyse der mechanischen Randbedingungen zur Adaption der oszillierenden Hinterschneidtechnik an einen Mobilbagger (2021)
    KIT Scientific Publishing
    Details
    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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    Spannungsfeld Hochwasserrückhaltung und Trinkwassergewinnung : ein Leitfaden (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Viele Talauen sind sowohl für die Gewinnung von Trinkwasser aus Grundwasser, als auch für die Schaffung von Hochwasserrückhalteräumen geeignet. Im vorliegenden Leitfaden werden die Prozesse des Stofftransports von der fließenden Welle über den Retentionsraum bis zu den Entnahmebrunnen eines Wasserwerks vorgestellt. Es wird deren Einfluss auf ein höheres Risiko der Verunreinigung der Grundwasserressource durch den Eintrag von Schadstoffen aus den Retentionsräumen diskutiert.
    Keywords: TA1-2040 ; Grundwasser ; Hochwasserretentionsraum ; Trinkwassergewinnung ; Schadstofftransport ; Verunreinigungsrisiko ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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  • 22
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    Silicon-Organic Hybrid Platform for Photonic Integrated Circuits (2021)
    KIT Scientific Publishing
    Details
    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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  • 23
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    Nichtlineare Modellierung von Ferroelektrika unter Berücksichtigung der elektrischen Leitfähigkeit (2021)
    KIT Scientific Publishing
    Details
    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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  • 24
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    Biegefestigkeit von Brettschichtholz-Hybridträgern mit Randlamellen aus Buchenholz und Kernlamellen aus Nadelholz (2021)
    KIT Scientific Publishing
    Details
    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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  • 25
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    Gleisselektive Ortung von Schienenfahrzeugen mit bordautonomer Sensorik (2021)
    KIT Scientific Publishing
    Details
    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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  • 26
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    Numerical Modeling of Stagnation Flows over Porous Catalytic Surfaces (2021)
    KIT Scientific Publishing
    Details
    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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  • 27
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    High accuracy determination of skin friction differences in an air channel flow based on pressure drop measurements (2021)
    KIT Scientific Publishing
    Details
    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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  • 28
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    ECG Based Analysis of the Ventricular Repolarisation in the Human Heart (2021)
    KIT Scientific Publishing
    Details
    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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    Ein Vorgehensmodell zur automatischen Kopplung von Services am Beispiel der Integration von Standardsoftwaresystemen (2021)
    KIT Scientific Publishing
    Details
    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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    Magnetisches Nanoaktorsystem (2021)
    KIT Scientific Publishing
    Details
    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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    Planung und Steuerung von Crossdocking-Zentren (2021)
    KIT Scientific Publishing
    Details
    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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    Verfahren zur Entschwefelung von flüssigen handelsüblichen Brennstoffen für die Anwendung in Brennstoffzellensystemen durch partielle Verdampfung und anschließende hydrierende Entschwefelung (2021)
    KIT Scientific Publishing
    Details
    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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    Zum Einfluß stochastischer Anregungen auf mechanische Systeme (2021)
    KIT Scientific Publishing
    Details
    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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    Feldtheoretische Modellierung der Materialprozessierung mit Mikrowellen im Durchlaufbetrieb (2021)
    KIT Scientific Publishing
    Details
    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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    Development of an Electrochemical Biosensor Platform and a Suitable Low-Impedance Surface Modification Strategy (2021)
    KIT Scientific Publishing
    Details
    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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    Grain-size effects in nanoscaled electrolyte and cathode thin films for solid oxide fuel cells (SOFC) (2021)
    KIT Scientific Publishing
    Details
    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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  • 37
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    Verbrennungskontrollierte Erwärmung des Brennraums zur Emissionsreduktion während des Kaltstarts - Untersuchungen zu Emissionen und zur Flammenausbreitung (2021)
    KIT Scientific Publishing
    Details
    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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  • 38
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    Risikoberechnung zum Schadstoffeintrag aus Hochwasserretentionsräumen in einen Grundwasserleiter (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Die Errichtung von Hochwasserretentionsräumen entlang von Flüssen ist eine verbreitete Maßnahme zur Verbesserung des Hochwasserschutzes. Durch die zusätzlichen Überflutungsflächen können vermehrt Schadstoffe aus der Hochwasserwelle in das Grundwasser eingetragen werden. Dies kann zu einer Gefährdung der Trinkwasserressource in den Flussauen führen. In der vorliegenden Arbeit wird eine Methode zur Risikoberechnung für eine Grundwassergefährdung in einem Hochwasserretentionsraum vorgestellt.
    Keywords: TA1-2040 ; Grundwasser ; Hochwasserretentionsraum ; Boden ; Schadstofftransport ; Risikoberechnung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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  • 39
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    Specification and verification of object-oriented software components (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: This work presents a flexible methodology for formally specifying and deductively verifying object-oriented components.It is based on a simple notion of program correctness. Correctness can be achieved with a novel system of proof obligations, which serve as input to a suitable theorem prover.
    Keywords: QA75.5-76.95 ; proof obligations ; encapsulation ; components ; context specification ; deductive verification ; modular proofs ; formal specification ; object-orientation ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: German
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  • 40
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    Projektbegleitendes (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Eine zügige, ökologisch-ökonomisch ausgewogene und innovative Umsetzung der erforderlichen Infrastruktur wird mit der bestehenden Herangehensweise in Deutschland bisher nicht erreicht. Mit der vorliegenden Arbeit wurde am Beispiel des Tunnelbaus mit dem ""Projektbegleitenden
    Keywords: TA1-2040 ; Umweltverträglichkeit ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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  • 41
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    Deterministic Sampling for Nonlinear Dynamic State Estimation (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: The goal of this work is improving existing and suggesting novel filtering algorithms for nonlinear dynamic state estimation. Nonlinearity is considered in two ways: First, propagation is improved by proposing novel methods for approximating continuous probability distributions by discrete distributions defined on the same continuous domain. Second, nonlinear underlying domains are considered by proposing novel filters that inherently take the underlying geometry of these domains into account.
    Keywords: QA75.5-76.95 ; Sensordatenfusion ; Richtungsstatistik ; Directional Statistics ; Stochastische Filterung ; Sensor Data Fusion ; DichteapproximationStochastic Filtering ; Density Approximation ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: English
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  • 42
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    Mikroskopische Modellierung des Außenverkehrs eines Planungsraums (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Im Rahmen der mikroskopischen Verkehrsnachfragemodellierung wird ein Modell vorgestellt, das den für den Planungsraum relevanten Verkehr der in den Außenzellen wohnenden Personen abbildet. Voraussetzung dafür ist die Übertragbarkeit von individuellen Mobilitätsdaten, die auf Basis der Daten des Deutschen Mobilitätspanels (MOP) analysiert wird. Darüber hinaus wird eine Methode zur Abgrenzung von Untersuchungsgebieten für beliebige Planungsräume in Deutschland dargelegt.
    Keywords: TA1-2040 ; Mikroskopisch ; Untersuchungsgebiet ; Verkehrsnachfragemodellierung ; Mobilitätsdaten ; Außenverkehr ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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  • 43
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    Grafische Benutzungsunterstützung auf Befehlsebene für die Entwicklung massivparalleler Programme (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: Benutzungsunterstützung wird heute von jedem Programm verlangt. Aufbauend auf allgemeinen ergonomischen Grundlagen und einem allgemeinen Modell für parallele Algorithmen stellt die vorliegende Arbeit Methoden vor, wie Quelltext paralleler Programme durch den Einsatz dynamisch erzeugter Icons übersichtlicher gestaltet werden kann. Dazu wird eine neu entworfene Entwicklungsumgebung vorgestellt, die neben der Icondarstellung im Quelltext auch Dialogboxen bereitstellt, welche besonders für Aktivierungs- und Kommunikationsaufgaben auf Parallelrechnern angepasst sind.
    Keywords: QA75.5-76.95 ; Barrierefreiheit ; Parallelrechner ; Qt ; Programmierumgebung ; Softwareergonomie ; Benutzeroberfläche ; Softwarewerkzeug ; SIMD ; Editor ; Quellcode ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: German
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    Russisch-Deutsches Wörterbuch für Wasserwirtschaft = Russko-nemezkij slowarj po wodnomu chosjajstwu (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Dieses zweisprachige Wörterbuch zur Wasserwirtschaft ist das Standardwerk bei Kontakten unter Wissenschaftlern und Technikern aus Deutschland und deutschsprachigen Ländern mit Kollegen aus Russland und den russischsprachigen US-Staaten. Es ist als aktuelles und handliches Hilfsmittel vor allem für die Praxis gedacht. Das Wörterbuch enthält ca. 40.000 Begriffe aus den Bereichen Energie- und Wasserwirtschaft, Wasserbau sowie anderer angrenzender Industrie- und Wissenschaftsbereiche.
    Keywords: TA1-2040 ; Wasserwirtschaft ; Umweltschutz ; Wasserbau ; Energiewasserwirtschaft ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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  • 45
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    Superconducting Multilayer Technology for Josephson Devices : Technology, Engineering, Physics, Applications (2021)
    KIT Scientific Publishing
    Details
    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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  • 46
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    Vor-Sicht im Straßenverkehr - Experimentelle Untersuchung der somatischen Antizipation von Risiko (2021)
    KIT Scientific Publishing
    Details
    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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    Zustandsbestimmung von externen Spanngliedern und Schrägseilen mit Frequenzanalysen (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: In this work, the measurement system ResoCable®, consisting of hardware and software, was developed with the implementation and evaluation of the frequency measurements of external tendons and cables. Numerous measurements at external tendons and cables were conducted. Among them, the behavior of strands and deflection points was investigated with FE calculations.
    Keywords: TA1-2040 ; frequency analysis ; ZfP ; ResoCable ; stay cable ; Schrägseil ; Spannglied ; Frequenzanalyse ; Tendon ; NdT ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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  • 48
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    Kornwachstum in Strontiumtitanat (2021)
    KIT Scientific Publishing
    Details
    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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    Integrated Planning and Control for Collision Avoidance Systems (2021)
    KIT Scientific Publishing
    Details
    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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    Untersuchung und Optimierung der Fahrkomfort- und Fahrdynamikeigenschaften von Radladern unter Berücksichtigung der prozessspezifischen Randbedingungen (2021)
    KIT Scientific Publishing
    Details
    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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    Korrosionsschutzschichten für Dieselpartikelfilter aus Cordierit zur Erhöhung der thermochemischen Belastbarkeit (2021)
    KIT Scientific Publishing
    Details
    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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    Verfahren zur Charakterisierung des Niederfrequenzverhaltens von Lithium-Ionen Batterien (2021)
    KIT Scientific Publishing
    Details
    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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    Objektive Bewertung querdynamischer Reifeneigenschaften im Gesamtfahrzeugversuch (2021)
    KIT Scientific Publishing
    Details
    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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    Bewegungsplanung und sensorgestützte Ausführung für das Greifen auf humanoiden Robotern (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: Zielsetzung dieser Arbeit ist die Untersuchung, Entwicklung und Realisierung von Algorithmen zur Planung und Ausführung von Greif- und Manipulationsaufgaben auf humanoiden Robotern. Die hierzu entwickelten Methoden ermöglichen die Planung kollisionsfreier Bewegungen für ein- und zweiarmige Aufgabenstellungen sowie deren sensorgestützte Ausführung.
    Keywords: QA75.5-76.95 ; Humanoide Roboter ; Greifen ; Bewegungsplanung ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: German
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    Electrochemical Performance and Stability of Ba?.?Sr?.?Co?.?Fe?.?O??? for Oxygen Transport Membranes (2021)
    KIT Scientific Publishing
    Details
    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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    Entwicklungswerkzeuge für die Fahrzeugklimatisierung von Nutzfahrzeugen (2021)
    KIT Scientific Publishing
    Details
    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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    Fahrzeugdetektion durch Fusion monoskopischer Videomerkmale (2021)
    KIT Scientific Publishing
    Details
    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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  • 58
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    Application of the cohesive zone model to the analysis of rotors with a transverse crack (2021)
    KIT Scientific Publishing
    Details
    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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  • 59
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    Modellbasierte und positionsgenaue Erkennung von Regentropfen in Bildfolgen zur Verbesserung von videobasierten Fahrerassistenzfunktionen (2021)
    KIT Scientific Publishing
    Details
    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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    Konzeption und Realisierung eines neuen Systems zur produktbegleitenden virtuellen Inbetriebnahme komplexer Förderanlagen (2021)
    KIT Scientific Publishing
    Details
    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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    Efficient Reinforcement Learning using Gaussian Processes (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: This book examines Gaussian processes in both model-based reinforcement learning (RL) and inference in nonlinear dynamic systems.First, we introduce PILCO, a fully Bayesian approach for efficient RL in continuous-valued state and action spaces when no expert knowledge is available. PILCO takes model uncertainties consistently into account during long-term planning to reduce model bias. Second, we propose principled algorithms for robust filtering and smoothing in GP dynamic systems.
    Keywords: QA75.5-76.95 ; autonomous learning ; Gaussian processes ; control ; machine learning ; Bayesian inference ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: English
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    Simulations for the optimization of High Temperatur Superconductor current leads for nuclear fusion applications (2021)
    KIT Scientific Publishing
    Details
    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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    Ein neuartiges mehrträgerbasiertes PLC-System mit störresistenter Synchronisation (2021)
    KIT Scientific Publishing
    Details
    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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    Reactive Control of Turbulent Wall-Bounded Flows for Skin Friction Drag Reduction (2021)
    KIT Scientific Publishing
    Details
    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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  • 65
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    Hardwaregestützte Energieoptimierung von Elektrik/Elektronik-Architekturen durch adaptive Abschaltung von verteilten, eingebetteten Systemen (2021)
    KIT Scientific Publishing
    Details
    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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  • 66
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    Integratives Anforderungsmanagement : Konzept und Anforderungsmodell am Beispiel der Fahrzeugentwicklung (2021)
    KIT Scientific Publishing
    Details
    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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    Deutsch-Russisches Wörterbuch für Wasserwirtschaft = Nemeckij-russko slovar' po vodnomu chozjajstvu (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Das Deutsch-Russische Wörterbuch für Wasserwirtschaft ist ein unentbehrliches Hilfsmittel für den Aufbau von Kontakten und Kooperationen zwischen den Fachleuten und Wissenschaftlern aus russischsprachigen GUS-Staaten und deutschsprachigen Ländern. Das Wörterbuch enthält rund 40.000 Stichwörter und nahezu die gleiche Anzahl Bedeutungen aus den Bereichen Energie- und Wasserwirtschaft, Wasserbau,
    Keywords: TA1-2040 ; Energiewirtschaft ; Wasserwirtschaft ; Wasserbau ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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  • 68
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    Entwicklung und Optimierung von gradierten Wolfram/EUROFER97-Verbindungen für Divertorkomponenten (2021)
    KIT Scientific Publishing
    Details
    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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  • 69
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    Eine modulare Funktionsarchitektur zur Umsetzung einer gesamtheitlichen Betriebsstrategie für Elektrofahrzeuge (2021)
    KIT Scientific Publishing
    Details
    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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    Über lernende optische Inspektion am Beispiel der Schüttgutsortierung (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: Automated visual inspection is an integral part in industrial manufacturing processes, but development and setup of such systems is very costly. Machine learning significantly reduces the effort of and speeds up both tasks. This work develops several machine learning methods suitable for automated visual inspection. The methods augment each other and can be used for a wide range of products.
    Keywords: QA75.5-76.95 ; Mustererkennung ; Schüttgutsortierung ; visual inspection ; optische Inspektion ; maschinelles Lernen ; Pattern recognition ; machine learning ; bulk material soriting ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: German
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    Human Pose Estimation with Implicit Shape Models (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: This work presents a new approach for estimating 3D human poses based on monocular camera information only. For this, the Implicit Shape Model is augmented by new voting strategies that allow to localize 2D anatomical landmarks in the image. The actual 3D pose estimation is then formulated as a Particle Swarm Optimization (PSO) where projected 3D pose hypotheses are compared with the generated landmark vote distributions.
    Keywords: QA75.5-76.95 ; Computer vision ; Bildverarbeitung ; Human pose estimation ; action recognition ; AktionserkennungScene understanding ; Szenenverstehen ; Menschliche Posenschätzung ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: English
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    Whole-Body Affordances for Humanoid Robots: A Computational Approach (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: The goal of this work is the development of a novel computational formalization of whole-body affordances which is suitable for the multimodal detection and validation of interaction possibilities in unknown environments. The hierarchical framework allows the consistent fusion of affordance-related evidence and can be utilized for realizing shared autonomous control of humanoid robots. The affordance formalization is evaluated in several experiments in simulation and on real humanoid robots.
    Keywords: QA75.5-76.95 ; Kognition ; cognition ; Manipulation ; Perzeption ; robotics ; Humanoide Robotik ; humanoid robotics ; manipulation ; Robotik ; perception ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: English
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    Real-time Biomechanical Modeling for Intraoperative Soft Tissue Registration (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: Computer assisted surgery systems intraoperatively support the surgeon by providing information on the location of hidden risk and target structures during surgery. However, soft tissue deformations make intraoperative registration (and thus intraoperative navigation) difficult. In this work, a novel, biomechanics based approach for real-time soft tissue registration from sparse intraoperative sensor data such as stereo endoscopic images is presented to overcome this problem.
    Keywords: QA75.5-76.95 ; real-time finite elements ; soft tissue modeling ; echtzeitfähige finite Elemente ; intraoperative Navigation ; registration ; Registrierung ; intraoperative navigation ; GPU ; Weichgewebemodellierung ; GPU computing ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: English
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    Baustoffe und Betonbau : Lehren, Forschen, Prüfen, Anwenden - Festschrift zum 60. Geburtstag von Prof. Dr.-Ing. Harald S. Müller (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Die vorliegende Festschrift ""Baustoffe und Betonbau - Lehren, Forschen, Prüfen, Anwenden"" ist Herrn Prof. Dr.-Ing. Harald S. Müller zum 60. Geburtstag gewidmet. Sie würdigt die Tätigkeit von Herrn Prof. Müller als Hochschullehrer und Forscher, seinen unermüdlichen Einsatz für die Materialprüfung und Normung von Baustoffen sowie sein umfangreiches und langjähriges Engagement in vielen für die Betonbauweise relevanten Gremien und Vereinigungen.
    Keywords: TA1-2040 ; Beton ; Bauwesen ; Baustoffe ; Zement ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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    Strategie und Praxis der Umnutzung von Kirchengebäuden in den Niederlanden (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: The Netherlands have a long-termstanding experience concerning regarding the reuse of churches. The work delivers an in-depth analysis of current re-use practises and strategies that is following a mixed methods approach. Based on an initial policy analysis, 35 re-used churches were investigated by mapping their spatial and structural characteristics, complemented by governance and planning process related attributes. The work provides conditions, enablers and barriers for the German situation.
    Keywords: TA1-2040 ; Umnutzung ; Kirchengebäude ; Netherlands ; Niederlande ; Strategie ; Strategy ; Church buildings ; Re-Use ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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    Intraoperative Planning and Execution of Arbitrary Orthopedic Interventions Using Handheld Robotics and Augmented Reality (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: The focus of this work is a generic, intraoperative and image-free planning and execution application for arbitrary orthopedic interventions using a novel handheld robotic device and optical see-through glasses (AR). This medical CAD application enables the surgeon to intraoperatively plan the intervention directly on the patient’s bone. The glasses and all the other instruments are accurately calibrated using new techniques. Several interventions show the effectiveness of this approach.
    Keywords: QA75.5-76.95 ; Kalibrierung ; Handgehaltene Roboter ; Orthopädie ; Orthopedics ; Augmented Reality ; Handheld Robot ; Planning ; Calibration ; Planungsanwendung ; Erweiterte Realität ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: English
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    Modulare, verteilte Hardware-Software-Architektur für humanoide Roboter (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: Humanoide Roboter sind hochkomplexe Systeme. Sie zeichnen sich durch ein sehr heterogenes Sensor- und Aktorsystem aus, welches wiederum sehr hohe und breit gefächerte Anforderungen an die verwendete Architektur stellt. Es wird sowohl der Entwurf einer funktionalen Steuerungsarchitektur, das verwendete Softwarerahmenwerk als auch die Abbildung auf eine dezidierte Hardwarearchitektur beschrieben.
    Keywords: QA75.5-76.95 ; Humanoide Roboter ; Hardwarearchitektur ; Softwarearchitektur ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: German
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    Effiziente Schätzung dichter Bewegungsvektorfelder unter Berücksichtigung der Epipolargeometrie zwischen unterschiedlichen Ansichten einer Szene (2021)
    KIT Scientific Publishing
    Details
    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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    Wissensbasierte probabilistische Modellierung für die Situationsanalyse am Beispiel der maritimen Überwachung (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: In today’s surveillance systems, a multitude of sensors are used. Thus, the data volume is clearly increasing and the human decision maker has to be supported in analyzing this data in an intelligent way. This contribution deals with the process of situation assessment, which is analyzing real-time data with respect to pre-modeled situations of interest with a dynamic Bayesian network. The quality of the recognition is evaluated with a maritime dataset.
    Keywords: QA75.5-76.95 ; data fusion ; dynamic Bayesian networks ; SituationsbewusstseinSituation assessment ; maritime surveillance ; maritime Überwachung ; Situationsanalyse ; Datenfusion ; situation awareness ; dynamische Bayes’sche Netze ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: German
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    Methode zur Klassifizierung von Tragfähigkeitsmessergebnissen des Falling Weight Deflectometers bei Asphaltbefestigungen (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Mit dem Falling Weight Deflectometer können Tragfähigkeitsmuster als Merkmal für die strukturellen Gegebenheiten einer Straßenkonstruktion erfasst werden. Zur Bewertung dieser Tragfähigkeitsmuster (Deflexionsmulden) wurde durch Generierung theoretischer Deflexionsmulden eine bereits vorhandene Datenbank erweitert und dieser Datenbestand klassifiziert. Durch den Einsatz von Künstlichen Neuronalen Netzen wurde außerdem eine pragmatische Anwendung des klassifizierten Datenbestandes dargestellt.
    Keywords: TA1-2040 ; Substanzbewertung ; Zustandserfassung ; Erhaltung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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    Dreidimensionale und tiefengemittelte Large-Eddy-Simulation von Flachwasserströmungen (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: In dieser Arbeit wird ein tiefengemitteltes Large-Eddy-Simulationsverfahren für Flachwasserströmungen entwickelt. Dazu liefern umfangreiche dreidimensionale LES-Rechnungen Informationen über die in den tiefengemittelten Gleichungen zu modellierenden Terme.Als Anwendungen werden unter anderem die ausgebildete Gerinneströmung, die Zylinderumströmung, eine Mischungsschicht sowie die Strömung in einem Buhnenfeld betrachtet.
    Keywords: TA1-2040 ; LES ; Flachwasser ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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    Entwicklung und Evolution dienstorientierter Anwendungen im Web Engineering (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: Die vorliegende Abhandlung untersucht die methodische und systematische Herangehensweise an die Entwicklung dienstorientierter Anwendungen im Web Engineering. Dabei wird deren architekturelle Betrachtung in den Vordergrund gerückt, die auf der Grundlage autonomer, wiederverwendbarer Komponenten in Form von Web Services basiert. Dazu werden dedizierte Modelle, Methoden und Werkzeuge entlang dieser - an Web-Standards orientierten - Architektur entwickelt.
    Keywords: QA75.5-76.95 ; Web Engineering Entwicklung WSLS Agil Software ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: German
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    Tool-supported identification of functional concerns in object-oriented code (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: Concern identification aims to find the implementation of a functional concern in existing source code. In this work, concerns are described, using the Hierarchic Concern Model, as gray-boxes containing subconcerns, inputs, and outputs. The inputs and outputs are used as concern seeds to identify data-oriented abstractions of concern implementations, called concern skeletons. The identification approach is based on context free language reachability and supported by a tool, called CoDEx.
    Keywords: QA75.5-76.95 ; concern skeleton ; hierarchic concern model ; CoDEx ; concern identification ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: English
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    Untersuchung diffus spiegelnder Oberflächen mittels Infrarotdeflektometrie (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: Thermal infrared deflectometry is based on the effect that rough surfaces, although having a dull appearance in the visual spectrum, exhibit a specular reflection in the thermal infrared spectrum and therefore enabling surface inspection with the method of deflectometry. This work covers the problems of generating the required thermal code patterns. The evaluation either adapts established methods from deflectometry, or new methods are introduced.
    Keywords: QA75.5-76.95 ; Thermal infrared camera ; Wärmebildkamera ; Infrared-Deflectometry ; Oberflächeninspektion ; Thermische Muster ; Infrarotdeflektometrie ; Surface inspection ; Deflectometry ; Deflektometrie ; Thermal patterns ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: German
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    Modellbasierte, sensorgestützte Navigation von Laufmaschinen im Gelände (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: In der vorliegenden Arbeit werden Navigationsstrategien erforscht, die es einer Laufmaschine im Gelände ermöglichen, ein vorgegebenes Ziel autonom zu erreichen.Hierbei werden die Teilbereiche der Navigation, Lokalisation, Umweltmodellierung, Bahnplanung sowie Adaption an das Gelände unter Berücksichtigung der speziellen Anforderungen und Randbedingungen von Laufmaschinen eingehend untersucht.
    Keywords: QA75.5-76.95 ; Schreitroboter ; Navigation ; Gelände ; Lokalisation ; Bahnplanung ; Umweltmodell 〈Informatik〉 ; Anpassung ; Robotik ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: German
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    IT-gestütztes Compliance Management für Geschäftsprozesse (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: Compliance with regulatory requirements and internal policies has become increasingly critical to business success. This book presents an approach for efficiently checking the compliance of business processes based on event data recorded in a standardized event log format. In addition to a reference implementation of the approach an extension for a business process management tool as well as a web-based dashboard are developed.
    Keywords: QA75.5-76.95 ; Compliance-Regeln ; event logs ; Compliance-Prüfung ; compliance rules ; Compliance-Anforderungen ; Geschäftsprozessebusiness processes ; Ereignisprotokolle ; compliance requirements ; compliance checking ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: German
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  • 87
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    Modellierung und Simulation semi-transparenter organischer Solarzellen (2021)
    KIT Scientific Publishing
    Details
    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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  • 88
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    Intervallbeobachter für lineare parametervariante Systeme und deren Anwendung auf die Asynchronmaschine (2021)
    KIT Scientific Publishing
    Details
    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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    Informationserhaltende Sichten und ihre Änderungsoperationen (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: Anwendungsprogramme wie Applikationsserver folgen in ihrem Aufbau häufig einer mehrschichtigen Architektur, wobei eine Sicht beschreibt, wie die Daten aus der Datenbank in die Anwendung ausgelesen werden. Wird auf der Sicht eine Änderungsoperation durchgeführt, muss der Zustand der Datenbank entsprechend nachgeführt werden, so dass insgesamt wieder ein konsistenter Systemzustand erreicht wird. Die Arbeit zeigt, dass für eine weitaus größere Klasse von Sichten bei Änderungsoperationen eine Nachführung bestimmbar ist, als dies bei bisherigen Ansätzen der Fall ist.
    Keywords: QA75.5-76.95 ; Baumautomat ; View-Update-Problem ; Relationales Datenmodell ; Datenbank ; Sicht ; Änderungsoperationen ; Objektorientiertes Datenmodell ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: German
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    Automated Improvement of Software Architecture Models for Performance and Other Quality Attributes (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: Quality attributes, such as performance or reliability, are crucial for the success of a software system and largely influenced by the software architecture. Their quantitative prediction supports systematic, goal-oriented software design and forms a base of an engineering approach to software design. This thesis proposes a method and tool to automatically improve component-based software architecture (CBA) models based on such quantitative quality prediction techniques.
    Keywords: QA75.5-76.95 ; Software ArchitectureOptimizationQuality AttributesPerformanceModel-based Prediction ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: English
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    Flexible Application-Layer Multicast in Heterogeneous Networks (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: This work develops a set of peer-to-peer-based protocols and extensions in order to provide Internet-wide group communication. The focus is put to the question how different access technologies can be integrated in order to face the growing traffic load problem. Thereby, protocols are developed that allow autonomous adaptation to the current network situation on the one hand and the integration of WiFi domains where applicable on the other hand.
    Keywords: QA75.5-76.95 ; Adaptive Networks ; Wireless Communication ; Traffic Load Balancing ; Peer-to-Peer ; Application-Layer Multicast ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: English
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    Modellunterstützte Beurteilung der Verkehrsqualität auf Netzabschnitten von Bundesautobahnen (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: An efficient highway capacity design is becoming an increasingly important topic, thanks to recurring congestions and unreliable travel times in the German highway network. This work provides a new methodology for the analysis of oversaturated freeway facilities. A Cell Transmission Model was used as an underlying traffic flow model for modeling oversaturated freeway facilities and tailor-fitted to represent the HBS manual faithfully.
    Keywords: TA1-2040 ; freeway ; Bundesautobahn ; HCM ; traffic flow model ; Verkehrsqualität ; HBS ; level of service ; Cell Transmission Model ; Verkehrsflussmodell ; Zellenmodell ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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    Spectroscopic investigations of delaminated and intercalated phyllosilicates (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: The characteristic feature of phyllosilicates like muscovite (KAl2[Si3AlO10(OH)2] is their layered structure. Due to the resulting anisotropic optical and electrical properties this mineral is an important raw material in paint industries and polymer composites.Crucial for many of these properties is on one hand a high aspect ratio of the stacks, which will be enhanced by delamination of the mineral. On the other hand the exchange of the interlayer cations like potassium changes the chemical properties of the muscovite, its refraction behaviour and surface properties. But these interlayer cations are difficult to access and are not exchangeable under normal conditions.Thus a process for the intercalation of cations like Cu2+, Mg2+ or Zn2+ from super saturated nitrate solutions in autoclaves was developed to reveal a chemically modified mica phase.The extensive modification of the muscovite structure, due to the intercalation is monitored by X-ray diffractometry and several spectroscopic methods. The XRD results strongly suggest the formation of an intercalated irregular mixed-layer phase. This is proven by far infrared spectroscopy which show the simultaneous occurrence of both K+ and Cu2+ in the interlayer region, strongly increasing the interlayer space.1Investigations in the mid infrared region using diffuse reflectance spectroscopy (DRIFT) suggest a further migration of the intercalated cations deep into the ditrigonal holes of the tetrahedral sheet and their fixation within these holes close to the OH groups.
    Keywords: TA1-2040 ; Spektroskopie ; Interkalation ; Phyllosilicate ; Delamination ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: English
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    Symbiosen, Rituale, Routinen (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-04
    Description: not yet available
    Description: Die sozialkonstruktivistischen Essays über Technikrituale und Technikakzeptanz bieten an ausgewählten Beispielen und Quellen der 1920er bis 1960er Jahre einen Blick auf einige, zum Teil bislang wenig beachtete Quellenformen aus der Nähe, getragen von dem erkenntnisleitenden Interesse an ihrer identitätsstiftenden, also soziokulturellen Bedeutung, ihrem sozialen Leben in unserem Leben. Dabei geht es um eine Umsetzung der Ansätze der social construction of technology (SCOT).
    Keywords: history of technology ; technikgeschichte ; sozialkonstruktivismus ; constructivism ; Deutsche Reichsbahn (1920–1945) ; thema EDItEUR::P Mathematics and Science::PD Science: general issues::PDR Impact of science and technology on society ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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    Entwurfsoptimierung von selbst-adaptiven Wartungsmechanismen für software-intensive technische Systeme (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: This work presents novel concepts for efficient decision support in reconfiguring software-intensive technical systems with limited maintenance access. In contrast to purely redundancy-oriented approaches, the proposed methodology is based on the predictive pre-calculation of adequate configuration alternatives in the relevant design space. The knowledge about configuration relationships is manifested early and used for the autonomic cost-efficient assessment of configuration alternatives.
    Keywords: QA75.5-76.95 ; Fehlertoleranz ; fault tolerance ; Redundanz ; decision support ; redundancy ; software maintenance ; Software-Wartung ; Entscheidungsunterstützung ; Rekonfiguration ; Reconfiguration ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: German
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    Hydrodynamic processes at the water-sediment interface of streambeds (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Simultaneous 2D pressure and 2D velocity information at the rough water-sediment interface of streambeds were gained by a newly developed measurement setup. In the bed the pressure fluctuations decay exponentially within the first 1-2 equivalent sand roughnesses. Structural findings concerning coherent flow structures are consistent with models originally developed for smooth walls. A significant bed destabilizing flow-pressure pattern was identified for the first time.
    Keywords: TA1-2040 ; open channel flow ; pressure sensors ; coherent structures ; gravel bed ; PIV ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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    Schädigungsmodell für die Hydroabrasionsbeanspruchung zur probabilistischen Lebensdauerprognose von Betonoberflächen im Wasserbau (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Hydraulic structures are exposed to multifaceted exposures. Particular the hydro-abrasive wear of the concrete edge zones represents a key exposure. The knowledge about the abrasive mechanisms of concrete and its degradation process is still insufficient. Relating to the hydro-abrasive test method, the relevant material parameter and degradation model incomplete knowledge existed which was removed.
    Keywords: TA1-2040 ; Beton ; Lebensdauer ; Test method ; Hydroabrasionsverschleiß ; Concrete ; SchädigungsmodellHydro-abrasion ; Prüftechnik ; Life-time ; Deterioration model ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: German
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    Service-oriented design of environmental information systems (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: Service-orientation has an increasing impact upon the design process and the architecture of environmental information systems. This thesis specifies the SERVUS design methodology for geospatial applications based upon standards of the Open Geospatial Consortium. SERVUS guides the system architect to rephrase use case requirements as a network of semantically-annotated requested resources and to iteratively match them with offered resources that mirror the capabilities of existing services.
    Keywords: QA75.5-76.95 ; design methodology ; SERVUS ; resource orientation ; service-oriented architecture ; environmental information system ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: English
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    Semantic technologies for distributed information systems (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: In this book we show how semantic technologies and in particular the use of ontologies can be employed to address a number of typical challenges in distributed information systems: First, we illustrate how ontologies enable the integration of information across heterogeneous nodes. Second, we show how ontology evolution allows dealing with the dynamics in the information in a consistent manner. Third, we present a model for ontologybased coordination using semantic overlay networks.
    Keywords: QA75.5-76.95 ; Semantic Web ; Semantic Technologies ; Ontologies ; Information Systems ; Information Integration ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: English
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    Nonlinear state and parameter estimation of spatially distributed systems (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2023-12-20
    Description: In this thesis two probabilistic model-based estimators are introduced that allow the reconstruction and identification of space-time continuous physical systems. The Sliced Gaussian Mixture Filter (SGMF) exploits linear substructures in mixed linear/nonlinear systems, and thus is well-suited for identifying various model parameters. The Covariance Bounds Filter (CBF) allows the efficient estimation of widely distributed systems in a decentralized fashion.
    Keywords: QA75.5-76.95 ; sensor network ; nonlinear estimation ; distributed-parameter system ; bic Book Industry Communication::U Computing & information technology::UY Computer science
    Language: English
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