Publications
Now showing items 1681-1740 of 2508
Werkzeug- und Prozessentwicklung des Roll-to-Roll-Hochdurchsatzverfahrens zur kontinuierlichen, großflächigen Mikrostrukturierung
(2022)
This work describes the set-up of a roll-to-roll (R2R) system and the development of a specific microstructuring process for a variety of different materials ranging from high-performance polymers and low-melting-point ...
Arthur Schnitzler und der Film. Bedeutung, Wahrnehmung, Beziehung, Umsetzung, Erfahrung
(2006)
not yet available
Development and Evaluation of Coded Aperture Reconstruction Methods for Intraoperative Gamma Cameras
(2024)
Intraoperative Gamma Cameras are becoming increasingly common for radio-guided surgery. Coded Aperture Imaging has been proposed as a collimation technique, because it offers a better trade-off between sensitivity and ...
Trustworthy Distributed Usage Control Enforcement in Heterogeneous Trusted Computing Environments
(2025)
Distributed usage control allows to regulate the use of data even after sharing. However, existing solutions are susceptible to manipulation by dishonest data receivers. This work investigates the use of trusted computing ...
Referenzarchitekturmodell für Experience Management
(2024)
The recording and analysis of individual experience worlds via digital feedback communication offers new opportunities. In conjunction with the reconstruction of associated digital event chains, a customer's experience ...
Light Field Imaging for Deflectometry
(2023)
Optical measurement methods are becoming increasingly important for high-precision production of components and quality assurance. The increasing demand can be met by modern imaging systems with advanced optics, such as ...
Das „friedliche Atom“ als Narrativ in Politik, Wissenschaft und Design
(2023)
The work deals with the iconography of the atom from the euphoria about nuclear technology of the 1950s to the anti-nuclear movement of the 1970s in the Federal Republic of Germany. Using the life and work of the German ...
Integrated optical sensors on the Si₃N₄-organic hybrid (SiNOH) platform
(2023)
A waveguide-based sensor chip is demonstrated that is suitable for point-of-care applications. The biosensor is designed using a mathematical model to investigate the sensitivity of the waveguides. A new class of integrated ...
Analyse und Separation polyphoner Musiksignale
(2024)
In this work, improved signal analysis approaches for polyphonic music recordings, based on artificial neural networks, are presented. These approaches enable an objective estimation of the recording quality of amateur ...
Strengthening Resilience of Supply with Essential Goods through Public-Private Emergency Collaborations
(2023)
Companies can be valuable partners in delivering essential goods but must be appropriately motivated to participate in humanitarian crisis management. This work provides valuable insights into the status of humanitarian ...
Experimental investigation of relevant road surface descriptors for tire-road noise measurements on low-absorbing road surfaces
(2024)
Ihrer Arbeit in der Originalsprache: This work aims at identifying relevant road surface characteristics to mitigate tire-road noise of free-rolling tires using a systematic approach. As using open porous roads is already ...
In Search of Meaning
(2009)
The essays collected in this volume explore some of the themes that have been at the centre of recent debates within Wittgensteinian scholarship. In opposition to what we are tentatively inclined to think, the articles of ...
On the Electro-Chemo-Mechanical Coupling in Solid State Batteries and its Impact on Morphological Interface Stability
(2021)
Solid state batteries with a lithium metal electrode are considered the next generation of high energy battery technology. Unfortunately, lithium metal is prone to harmful protrusion or dendrite growth which causes dangerous ...
Ein Beitrag zur asymptotischen Analyse der hydraulischen Ventilsteuerungen
(2022)
A method based on the singular perturbation theory and the averaging method is developed for the dynamic analysis of hydraulic valves. Periodic solutions are calculated and stability is analyzed under the influence of ...
Reconstruction from Spatio-Spectrally Coded Multispectral Light Fields
(2022)
In this work, spatio-spectrally coded multispectral light fields, as taken by a light field camera with a spectrally coded microlens array, are investigated. For the reconstruction of the coded light fields, two methods, ...
Multi-User Gesture Recognition with Radar Technology
(2022)
The aim of this work is the development of a Radar system for consumer applications. It is capable of tracking multiple people in a room and offers a touchless human-machine interface for purposes that range from entertainment ...
Bauen mit Beton im Kreislauf - Recycling, Re-Use und Ressourcenschonung
(2023)
The concrete industry is facing the major challenge of drastically reducing CO₂ emissions and thus contributing to sustainability and climate protection. In these conference proceedings, we would like to focus on how we ...
Transactive Control of Coupled Electric Power and District Heating Networks
(2023)
The design of approaches for future market-based energy network operation faces the technical challenge of needing to coordinate a vast number of network participants spatially and temporally, in order to balance energy ...
Erfassung der Sichtweite bei Nebel durch die Kombination aus hochauflösendem Scheinwerfer und einem Kamerasystem
(2024)
In this work, the opportunities of high resolution headlamps are used in combination with camera sensors as a visibility meter in fog.
Different concepts are presented and investigated in a fog chamber. The results are ...
Einfluss des Dralls auf den Überschallnachlauf eines längsangeströmten zylindrischen Körpers
(2021)
This study investigates the effects of swirl on the supersonic wake of longitudinally-aligned axisymmetric afterbodies. The swirl was introduced upstream of the base corner by either spinning non-canted or non-spinning ...
Phasenfeldmodellierung von Bruchbildungs-, Kristallisations- und Auflösungsvorgängen in hydrothermalen Umgebungen
(2022)
This work focuses on the numerical investigation of fracture formation, crystallization, and crystal dissolution processes in subsurface hydrothermal environments on microscale. Phase-field models are presented and applied ...
Nutzung von Blickbewegungen für die Mensch-Computer-Interaktion mit dynamischen Bildinhalten am Beispiel der Videobildauswertung
(2024)
Interaction with dynamic image content is challenging for user perception, cognition and motor action. This dissertation identifies appropriate gaze-based interaction techniques for moving object selection in image sequences ...
Ein Beitrag zum simulationsbasierten Test von Lichtfunktionen
(2022)
In this work, two methods are developed and evaluated to integrate and test functional chains of automotive lighting functions on simulation-based test systems. The focus is initially on an approach for the efficient use ...
Nanoskalige Analytik der Mikrostruktur von hochdosig bestrahltem Beryllium
(2022)
The aim of the present work is to develop an in-depth understanding of the microstructural changes in neutron-irradiated beryllium. In particular, it aims to reveal the precise mechanisms leading to the observed tritium ...
Proceedings - 31. Workshop Computational Intelligence : Berlin, 25. - 26. November 2021
(2021)
The proceedings of the 31st Workshop on Computational Intelligence focus on methods, applications, and tools for fuzzy systems, artificial neural networks, deep learning, system identification, and data mining techniques.
Globale Handlungsfelder. Medien - Politik - Bildung
(2006)
not yet available
Context-based Access Control and Attack Modelling and Analysis
(2024)
This work introduces architectural security analyses for detecting access violations and attack paths in software architectures. It integrates access control policies and vulnerabilities, often analyzed separately, into a ...
Energy-efficient, scalable and modular industrial microwave applicator for high temperature alkaline hydrolysis of PET
(2023)
Microwave-assisted alkaline hydrolysis of PET can be 20 times faster and at lower temperatures. This work presents a novel industrial microwave applicator at 2.45 GHz with homogeneous distribution to support this reaction, ...
Schlüsselqualifikationen für Studium, Beruf und Gesellschaft
(2009)
not yet available
NMR micro-detectors tailored for multinuclear and electrochemistry lab-on-a-chip applications
(2022)
This work offers three solutions tailored to specific applications to overcome NMR challenges in the micro-domain. As the first sub-topic of this work, different potential electrode designs, compatible with NMR technique, ...
New Type of sub-THz Oscillator and Amplifier Systems Based on Helical-Type Gyro-TWTs
(2023)
This work presents the development of a new sub-THz source for the generation of trains of coherent high-power ultra-short pulses at 263 GHz via passive mode-locking of two coupled helical gyro-TWTs. For the first time, ...
Vertrauen - zwischen sozialem Kitt und der Senkung von Transaktionskosten
(2010)
not yet available
Verantwortung in Technik und Ökonomie
(2009)
not yet available
Methode zur Messung des Einflusses von Lichtimpulsen auf die visuelle Leistungsfähigkeit
(2021)
Due to its dynamic range, the human eye can adapt to a wide variety of light situations within a very short time. If the dynamic range of the eye is insufficient, glare occurs. There is no suitable objective measurement ...
Anonymous Point Collection - Improved Models and Security Definitions
(2020)
This work is a comprehensive, formal treatment of anonymous point collection. The proposed definition does not only provide a strong notion of security and privacy, but also covers features which are important for practical ...
Experimentelle Untersuchung der Zündung von Kerosin Jet A-1 unter subatmosphärischen Bedingungen
(2024)
The present study investigates the generation of a flame kernel in the polydisperse spray of a complex fuel under the influence of turbulent flow and under subatmospheric conditions in order to contribute to a better ...
Mechanische und Strömungsmechanische Topologieoptimierung mit der Phasenfeldmethode
(2022)
In engineering work, the optimization of the microstructure of a material, of mechanically loaded components and of components influencing the flow behaviour is important. Understanding the behavior of flows in geological ...
Modellierung von Lithium-Ionen-Batterien zur Lebensdauerprädiktion unter besonderer Berücksichtigung des Anodenüberhangeffekts
(2022)
The focus of this work is on the modelling of the degradation behaviour of conventional lithium-ion cells with graphite/NMC electrodes in conjunction with electrolytes based on LiPF6 in organic solvents. The potential for ...
Entwicklung eines lichtbasierten Fahrerassistenzsystems
(2020)
In this work describes the development of a light-based driver assistance system through projections on the road. Under realistic conditions it is shown that information can be transmitted to the driver at night by using ...
On the Influence of Piecewise Defined Contact Geometries on Friction Dampers
(2023)
This work considers dampers that do not solely focus on a single strategy but instead combine them. The capabilities of conventional dry friction dampers are expanded by taking into account piecewise defined contact ...
Vorausschauende Regelung von Fahrzeugsystemen durch stochastische Vorhersage der Fahrzeugdynamik
(2021)
Predictive control of vehicle systems often requires application of forecasting models. In this work a stochastic framework for generating forecasts of vehicle dynamics is proposed, to directly address uncertainty within ...
Adaptive Dynamic Programming: Solltrajektorienfolgeregelung und Konvergenzbedingungen
(2022)
In this work, discrete-time and continuous-time methods that integrate flexible reference trajectory representations into Adaptive Dynamic Programming approaches are presented and analyzed for the first time. Moreover, ...
Implicit Incremental Model Analyses and Transformations
(2021)
When models of a system change, analyses based on them have to be reevaluated in order for the results to stay meaningful. In many cases, the time to get updated analysis results is critical. This thesis proposes multiple, ...
Entwicklung und Evaluierung einer Kommunikationsgestützten Lokalisierung
(2023)
The content of this work is the development of a localization system, which enables several driverless transport vehicles to navigate locally in a highly flexible and free way. The ceiling mounted sensor system detects and ...
Wirksamkeit der Taktplanung aus Perspektive des Bauherrn am Beispiel von Produktionsimmobilien in der Automobilindustrie
(2022)
This work analyses the time effect that occurs due to the use of takt planning and takt control during the construction process from the perspective of the client. At first the historical courses of takt planning and takt ...
Modeling martensitic phase transformation in dual phase steels based on a sharp interface theory
(2021)
Martensite forms under rapid cooling of austenitic grains accompanied by a change of the crystal lattice. Large deformations are induced which lead to plastic dislocations. In this work a transformation model based on the ...
Gamification of telematics data to enhance operators’ behaviour for improvement of machine productivity in loading cycles
(2023)
Construction industry is suffering from low productivity rate in various projects such as excavation. Although this issue is discussed in literature and several approaches are proposed to address it, productivity rate is ...
Über die Formalisierung und Analyse medizinischer Prozesse im Kontext von Expertenwissen und künstlicher Intelligenz
(2023)
Digitalization has already transformed many areas of the economy and social life. Aspects of healthcare and clinical practice are also undergoing digital transformation. In light of these developments, this dissertation ...
Deep Reinforcement Learning zur Steigerung von Energieeffizienz und Pünktlichkeit von Straßenbahnen
(2023)
This work investigates how the energy efficiency and punctuality of streetcars can be increased by using AI. The AI is trained on two scenarios at three traffic times each. The determined driving profiles are compared with ...
Dynamic Model-based Analysis of Oxygen Reduction Reaction in Gas Diffusion Electrodes
(2024)
In this work, the first simulation model of oxygen depolarized cathodes (ODC), which are silver catalyst-based gas diffusion electrodes, is presented that considers the phase equilibrium of the gas-liquid interface and ...
Die Baugeschichte des Freiburger Münsterturms
(2023)
The Freiburg Minster spire viewed from the perspective of archaeological building research. Individual building phases of the tower are presented by means of collecting and analysing thousands of stonemason's marks appearing ...
Ganzheitliche Optimierung einer Axialkolbenpumpe durch bedarfsangepasste Entlastung tribologischer Kontakte
(2022)
Swash plate axial piston pumps are used in various industrial & mobile applications. An optimization of this displacement principle can be achieved by the active influence of the hydrostatic relief in tribological contacts.The ...
Fundamentals for the Dimensioning and Optimization of Prestressed Segmented Girders for Application in Bridge Crane Systems
(2022)
Bridge cranes are widely used as discontinuous material handling systems in industrial environments. The so-called crane bridge plays a central role in the overall construction. With increasing span widths and load capacities, ...
Fluorescent thermal imaging method for investigating transient effects in high-temperature superconductor tapes and coils
(2022)
This work presents the development and application of high-speed fluorescent thermal imaging for quench analysis in high-temperature superconductors (HTS). Using a fluorescent coating, with a temperature-dependent light ...
Inverse dynamics of underactuated flexible mechanical systems governed by quasi-linear hyperbolic partial differential equations
(2024)
This work is about the inverse dynamics of underactuated flexible mechanical systems governed by quasi-linear hyperbolic partial differential equations subjected to time-varying Dirichlet boundary conditions that are ...
Advanced Elastocaloric Cooling Devices Based on Shape Memory Alloy Films
(2022)
Elastocaloric cooling is an emerging solid-state cooling technology with the potential to provide environmentally friendly, efficient cooling. The elastocaloric effect in superelastic shape memory alloy films is used to ...
Integration of Flywheel Energy Storage Systems in Low Voltage Distribution Grids
(2023)
A Flywheel Energy Storage System (FESS) can rapidly inject or absorb high amounts of active power in order to support the grid, following abrupt changes in the generation or in the demand, with no concern over its lifetime. ...
Proceedings of the 2020 Joint Workshop of Fraunhofer IOSB and Institute for Anthropomatics, Vision and Fusion Laboratory
(2021)
In 2020, the annual joint workshop of the Fraunhofer IOSB and the Vision and Fusion Laboratory of the KIT was hosted at the IOSB in Karlsruhe. For a week from the 27th to the 31st July the doctoral students of both ...
Bauen mit rezyklierten mineralischen Baustoffen
(2024)
Due to its high CO2-emissions, the concrete industry bears a significant responsibility in the necessary reduction of global CO2-emissions. The possibility of recycling is crucial in implementing sustainable concrete ...
Impedanzbasierte Spannungsprädiktion von Lithium-Ionen-Batterien
(2024)
This work presents a physically motivated model that predicts the cell voltage of a lithium-ion-battery based on its impedance. The model was parameterized and validated on a commercial pouch cell. In a comprehensive ...