Publications
Voici les éléments 2241-2320 de 2508
Technik und Kultur
(2010)
not yet available
Bildfolgenbasierte Gewinnung und Nutzung partikelindividueller Bewegungsinformation in der optischen Schüttgutsortierung
(2022)
Sensor-based sorting enables the separation of individual particles from a material stream. In this work, a novel sorting system using an area-scan camera is investigated. The use of high-speed cameras raises exciting ...
Praxis der Digitalen Signalverarbeitung
(2017)
The basics of digital signal processing are introduced with eight practical experiments. The experiments cover a wide range of different topics such as sensor fusion, vibration analysis, acoustics and image processing. The ...
Adding nonlinearity to an electromagnetic-magnonic quantum hybrid device
(2020)
In this book, hybrid systems based on yttrium-iron-garnet (YIG), three dimensional microwave cavity resonators, and superconducting transmon qubits, are investigated by continuous wave and pulsed microwave spectroscopy. ...
Power Generation by Resonant Self-Actuation
(2023)
Research into micro energy harvesting systems has been driven by the need for self-sustaining, stable power sources for interconnected wireless sensors. Waste heat, particularly at temperatures below 200 °C, presents a ...
Parameter- und Ordnungsidentifikation von fraktionalen Systemen mit einer Anwendung auf eine Lithium-Ionen-Batteriezelle
(2022)
Model-based methods are increasingly being used for a safe and efficient operation of battery cells. For modeling battery cells, fractional models which are characterized by non-integer derivative orders have become ...
Biegefestigkeit von Trägern aus kreissektorförmigen Lamellen
(2022)
Laminated Segment Timber (LST) consists of mutually glued trapezoidal lamellas made of Spruce. Due to the optimization of process parameters the wood yield can be increased to an average of 85 %. LST and layered LST are ...
Analyse und Modellbildung von PEM-Brennstoffzellen mittels elektrochemischer Impedanzspektroskopie
(2024)
This work presents a physically motivated model for predicting the current/voltage behavior of PEM fuel cells. Extensive impedance measurements and DRT analyses were used to identify and quantify all loss processes. The ...
Entwicklung einer Methode zum Einsatz von Reinforcement Learning für die dynamische Fertigungsdurchlaufsteuerung
(2023)
This work aims to develop a method that can reschedule the matrix production in the case of a disruption. For this purpose, different artificial intelligence methods are combined in a novel way. The developed method is ...
Untersuchung der Augensicherheit durch Multi-Pulsbestrahlung für LiDAR-Anwendungen
(2022)
LiDAR (Light detection and ranging) represents one of the key technologies for autonomous driving. For this reason, this work is concerned with the question of eye safety of the laser-based technology. For this purpose, ...
Modellierung und Optimierung der strömungstechnischen Vorgänge in Abweiseradsichtern
(2022)
Centrifugal classifiers are processing machines used in the gas-particle classification. The aim of this work is to reduce energy costs by improving the classification properties and reducing the pressure drop. In addition ...
Effizienzoptimierung mobilhydraulischer Load-Sensing-Systeme durch Reduzierung systembedingter Druckverluste am Beispiel eines Hydraulikbaggers
(2024)
In this thesis, a hydraulic circuit will be developed, which can reduce the partial load losses of hydraulic-mechanic load-sensing systems (LS). As reference application, the LS system of an hydraulic excavator will be ...
Perspectives on warm conveyor belts - sensitivities to ensemble configuration and the role for forecast error
(2023)
Warm conveyor belts (WCBs) are weather systems that substantially modulate the large-scale extratropical circulation. As they can amplify forecast errors and project them onto the Rossby wave pattern, they are of high ...
Der Spröd-duktil-Übergang in ultrafeinkörnigem Wolfram
(2023)
High brittle-ductile transition temperatures preclude the use of conventionally manufactured tungsten (W) as a structural material. Ultrafine grained (UFG) W materials, however, exhibit the brittle-ductile transition at ...
Dynamics of Rotors on Refrigerant-Lubricated Gas Foil Bearings
(2021)
The gas foil bearing (GFB) technology is a key factor for the transition to oil-free rotating machinery. Among numerous advantages, GFBs offer the unique ability to be lubricated with working fluids such as refrigerants. ...
Optical coherence tomography for characterization of nanocomposite materials
(2021)
Major challenges in nanoparticle and nanocomposite development are the control of particle size and shape, and to achieve uniform particle dispersion. In this book, the application of optical coherence tomography (OCT) for ...
Knowledge-Driven Harmonization of Sensor Observations: Exploiting Linked Open Data for IoT Data Streams
(2021)
The rise of the Internet of Things leads to an unprecedented number of continuous sensor observations that are available as IoT data streams. Harmonization of such observations is a labor-intensive task due to heterogeneity ...
Principles of Catastrophic Forgetting for Continual Semantic Segmentation in Automated Driving
(2024)
Deep learning excels at extracting complex patterns but faces catastrophic forgetting when fine-tuned on new data. This book investigates how class- and domain-incremental learning affect neural networks for automated ...
Zur Geschichte der Reedereigebaude an der Elbstrase bei der Alten Liebe in Cuxhaven seit den 1920er Jahren
(2020)
This study will discuss the history of the creation, construction and use of three distinctive shipping company villas in the harbour of Cuxhaven/Germany, located south of the harbours lighthouse, near the Alte Liebe”. The ...
A computational multi-scale approach for brittle materials
(2023)
Materials of industrial interest often show a complex microstructure which directly influences their macroscopic material behavior. For simulations on the component scale, multi-scale methods may exploit this microstructural ...
Entwicklung einer Kontinuumsbeschreibung für die Versetzungsmobilität in Versetzungsnetzwerken
(2020)
This work deals with the homogenization of dislocation reactions across slip systems in a physically based three-dimensional formulation of metal plasticity. Based on comparisons with discrete dislocation dynamics simulations, ...
Design of Cast Steel Components under Cyclic Loading
(2022)
This work presents a design approach that links fatigue resistance of cast steel component to permissible defect sizes. It is based on fractures mechanics, is in line with experiences of the last 60 years and validated by ...
OCM 2025 - 7th International Conference on Optical Characterization of Materials
(2025)
The state of the art in the optical characterization of materials is advancing rapidly. New insights have been gained into the theoretical foundations of this research and exciting developments have been made in practice, ...
Kleinskalige Charakterisierung der Fest-Flüssig-Trennung und Betrachtung des Scherbruchs von Proteinkristallen
(2022)
Proteins are macromolecules composed of amino acids that are essential for a large number of biological metabolic processes. Proteins are also used in technical applications, for example to catalyze reactions. The objective ...
Untersuchung von Wechselstromverlusten verschiedener hochtemperatursupraleitender Mehrleiterkonzepte für dreiphasige Hochstromanwendungen
(2025)
Given the energy transition in Germany, network operators face the challenge of providing reliable energy transmission. The use of superconducting cables represents an alternative for conventional medium- and high-voltage ...
Mehrskalige Charakterisierung der Hochtemperatur-Brennstoffzelle (SOFC)
(2022)
The solid oxide fuel cell (SOFC) as electricity and heat producer of the future represents a key technology in the context of a climate-friendly energy supply. Research focuses on the improvement of the lifetime and cost ...
Modellierung mehrkomponentiger Materialsysteme für die Phasenfeldmethode und Analyse der simulierten Mikrostrukturen
(2021)
In this work, the solidification process of the high-temperature materials NiAl-34Cr und Nb-Si is investigated with the phase-field method. This work includes an entire investigation chain from the modeling of the material ...
Systemauslegung autarker Hybridantriebe unter Berücksichtigung kundenspezifischer Randbedingungen
(2024)
In order to meet the legal requirements, the efficiency of conventional drives can be improved by using electric hybrid systems. Autarkic hybrid systems without external charging options can offer a high cost/benefit ratio. ...
Proceedings - 30. Workshop Computational Intelligence : Berlin, 26. - 27. November 2020
(2020)
The proceedings of the 30th workshop on computational intelligence focus on methods, applications, and tools for fuzzy systems, artificial neural networks, deep learning, system identification, and data mining techniques.
OCM 2023
(2023)
The state of the art in the optical characterization of materials is advancing rapidly. New insights have been gained into the theoretical foundations of this research and exciting developments have been made in practice, ...
Verfahren zur Beurteilung der Schadensumfangs- und Zustandsentwicklung vorgespannter Brückenbauwerke
(2021)
The knowledge of damage processes and their influence on the development of the system´s response is of great significance for the maintenance of infrastructure constructions. By means of computer aided recalculations, the ...
Neue Methode zur Bestimmung und Beschreibung der taktfrequenten Stromsteigungen in Drehstromsynchronmaschinen
(2022)
Knowledge of the cycle-frequency changes in the machine currents is of great advantage for many methods of controlling modern, highly utilized electrical machines. But how can these changes in machine currents be reliably ...
Waveguide-Based Photonic Sensors: From Devices to Robust Systems
(2022)
Integrated photonic sensor systems are miniaturized, mass-producible devices that leverage the mature semiconductor fabrication technology and a well-established ecosystem for photonic circuits. This book aims at a holistic ...
Consequences of hydroxyl generation by the silica/water reaction
(2022)
Water diffusing into silica surfaces gives rise for several effects on diffusion behaviour and mechanical properties. In a preceding booklet, we focused on diffusion and fiber strengths and deformations which were obtained ...
Objektivierung des Schwingungskomforts schwerer Nutzfahrzeuge
(2021)
A time efficient development process of new trucks includes an early development of ride comfort before real prototypes exist. Therefore it is necessary to determine objective and measurable characteristic values to predict ...
Chip-scale optical frequency comb sources for terabit communications
(2022)
To keep up with the ever-increasing data transmission speed needs, data center interconnects are scaling up to provide multi-Tbit/s connectivity. These links require a high number of WDM channels, while the associated ...
Automatische Erzeugung langzeitverfügbarer Punktmerkmalskarten zur robusten Lokalisierung mit Multi-Kamera-Systemen für automatisierte Fahrzeuge
(2021)
Automated vehicles heavily rely on accurate self-localization to operate safely and efficiently in dynamic road traffic scenarios. In this work, an iterative and robust approach to create highly accurate maps comprising ...
Inverse Dynamic Game Methods for Identification of Cooperative System Behavior
(2021)
This work addresses inverse dynamic games, which generalize the inverse problem of optimal control, and where the aim is to identify cost functions based on observed optimal trajectories. The identified cost functions can ...
Sustainable phosphate management
(2023)
Phosphorus is a crucial element in agriculture to feed the fast-growing global population. Its sustainable supply has ecological, social and human dimensions and it is classified as critical to European industries. On the ...
Experimental characterization and modelling of textile reinforced masonry structures with the Equivalent frame method
(2022)
An innovative strengthening technique for the seismic retrofitting of masonry buildings is the fabric-reinforced cementitious matrix (FRCM). The system presented in this work is EQ-GRID, which consists of a multi-axial ...
Zur Wechselwirkung zwischen Fahrbahntextur und Laufstreifenmischung von Pkw-Reifen
(2023)
This work aims to gain an understanding of the interactions between tread compounds and surface texture on dry and wet road conditions. If, for example, a corundum surface, which is very well-established in the tire industry, ...
Mesoscale simulation of the mold filling process of Sheet Molding Compound
(2022)
Sheet Molding Compounds (SMC) are discontinuous fiber reinforced composites that are widely applied due to their ability to realize composite parts with long fibers at low cost. A novel Direct Bundle Simulation (DBS) method ...
Vibroakustische Analyse eines elektrischen Radnabenmotors und Optimierung durch geeignete Steuerungsansätze
(2023)
This work deals with the mechanisms of disturbing noises at the electric wheel hub motor and describes a multiphysical model which simulates them. From this, countermeasures are derived and evaluated. A vibroacoustical ...
Technologische Beschreibung und physiologische Bewertung eines hochaufgelösten Laserscanner- Scheinwerfersystems
(2023)
The approach of a laser scanning headlamp for adaptive light functions includes six laser sources which are deviated on a micro mirror. The oscillation of that mirror generates an extended light distribution on a white ...
Prozesssicherheit von Laserschneidmaschinen
(2022)
The aim of this work is the design and validation of an image-based optimization of laser flatbed cutting machines to avoid tilted parts. Three different approaches for the visual detection of the slats are presented and, ...
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 ...
Prozesssicherheit von Laserschneidmaschinen
(2022)
The aim of this work is the design and validation of an image-based optimization of laser flatbed cutting machines to avoid tilted parts. Three different approaches for the visual detection of the slats are presented and, ...
Hybride Beamformingsysteme niedriger Komplexität für den Mobilfunk
(2022)
An important method to increase the spectral efficiency of wireless radio communication networks is the use of multiple-input multiple-output communication systems operating in the centimetre and millimetre wave region. ...
Multisensorielle Navigation und Kartierung in schwierigen Bedingungen
(2023)
Robust navigation as well as mapping of the environment are critical for autonomous aerial vehicles. This is especially challenging in poor visual conditions or degraded GNSS. Therefore, this thesis proposes multi-sensor ...
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 ...
Technologische Beschreibung und physiologische Bewertung eines hochaufgelösten Laserscanner- Scheinwerfersystems
(2023)
The approach of a laser scanning headlamp for adaptive light functions includes six laser sources which are deviated on a micro mirror. The oscillation of that mirror generates an extended light distribution on a white ...
Diagenetic controls on fluid flow and mechanical properties in Rotliegend reservoir sandstones
(2021)
Reservoir quality of Rotliegend sandstones is mainly controlled by their permeability, and porosity, and their mechanical properties. Thus, diagenetic porosity-reducing processes need to be understood to evaluate reservoir ...
Multisensorielle Navigation und Kartierung in schwierigen Bedingungen
(2023)
Robust navigation as well as mapping of the environment are critical for autonomous aerial vehicles. This is especially challenging in poor visual conditions or degraded GNSS. Therefore, this thesis proposes multi-sensor ...
Diagenetic controls on fluid flow and mechanical properties in Rotliegend reservoir sandstones
(2021)
Reservoir quality of Rotliegend sandstones is mainly controlled by their permeability, and porosity, and their mechanical properties. Thus, diagenetic porosity-reducing processes need to be understood to evaluate reservoir ...
Frequenzkamm-basiertes breitbandiges MIMO-OFDM-Radar
(2022)
In recent years, OFDM has become more and more important for radar applications. A disadvantage, however, is the need for high sampling rates, which is exactly the starting point of the frequency comb OFDM radar scheme. ...
Frequenzkamm-basiertes breitbandiges MIMO-OFDM-Radar
(2022)
In recent years, OFDM has become more and more important for radar applications. A disadvantage, however, is the need for high sampling rates, which is exactly the starting point of the frequency comb OFDM radar scheme. ...
Integrierte Multi-Sensor-Fusion für die simultane Lokalisierung und Kartenerstellung für mobile Robotersysteme
(2021)
In this work, probabilistic methods for combining multiple sensors utilizing multi-sensor fusion for robust and precise localization and mapping in heterogeneous outdoor environments are presented. Aspects of increasing ...
Integrierte Multi-Sensor-Fusion für die simultane Lokalisierung und Kartenerstellung für mobile Robotersysteme
(2021)
In this work, probabilistic methods for combining multiple sensors utilizing multi-sensor fusion for robust and precise localization and mapping in heterogeneous outdoor environments are presented. Aspects of increasing ...
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, ...
Allgemeine Technologie
(2009)
Allgemeine Technologie, die Lehre von den grundlegenden Prinzipien der Technik, verbindet technik- und sozialwissenschaftliches Wissen mit philosophischen Überlegungen. Das Buch behandelt anhand zahlreicher Beispiele die ...
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, ...
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 ...
Allgemeine Technologie
(2009)
Allgemeine Technologie, die Lehre von den grundlegenden Prinzipien der Technik, verbindet technik- und sozialwissenschaftliches Wissen mit philosophischen Überlegungen. Das Buch behandelt anhand zahlreicher Beispiele die ...
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 ...
Beitrag zur Entwicklung von Konstantflusspumpen für Frischbeton unter genauerer Betrachtung der Dickstoffventile
(2021)
On almost every construction site, mobile fresh-concrete pumps of different designs can be found, all of which have an interruptions in delivery. In this work, a fresh-concrete constant-flow pump is developed and simulated. ...
Abbildende Ellipsometrie mit Lichtwegumkehrung für die optische Charakterisierung von gekrümmten Oberflächen
(2023)
Ellipsometry is a measuring method for surface characterization and thin-film measurement of flat surfaces using polarized light. However, a new measuring principle based on return-path ellipsometry and retroreflection ...
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 ...
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, ...
Self-learning Anomaly Detection in Industrial Production
(2023)
Configuring an anomaly-based Network Intrusion Detection System for cybersecurity of an industrial system in the absence of information on networking infrastructure and programmed deterministic industrial process is ...
Ein Verfahren zur lexikographischen modellprädiktiven Regelung mit der Anwendung auf eine permanenterregte Synchronmaschine
(2022)
In classical approaches for the torque control of Permanent Magnet Synchronous Machines the torque references are converted into current references by static lookup tables which consider power losses. This procedure is ...
Active Vision for Scene Understanding
(2021)
Visual perception is one of the most important sources of information for both humans and robots. A particular challenge is the acquisition and interpretation of complex unstructured scenes. This work contributes to active ...
Spannungseinprägende aktive Filter zur Kompensation der Stromverzerrungen von Netzstromrichtern
(2023)
In this thesis, the use of voltage-source active filters for harmonic mitigation of grid-connected power converters is proposed. Based on a modeling of this novel converter configuration, an operating strategy is derived ...
Der Quasi-n-Level Betrieb des Flying Capacitor Umrichters für Mittelspannungsanwendungen
(2024)
The quasi-n-level operation of the flying capacitor converter (FCCs) is an optimized operation mode of a multilevel converter. The quasi-n-level operation of a multilevel converter was presented with an analysis of its ...
Abbildende Ellipsometrie mit Lichtwegumkehrung für die optische Charakterisierung von gekrümmten Oberflächen
(2023)
Ellipsometry is a measuring method for surface characterization and thin-film measurement of flat surfaces using polarized light. However, a new measuring principle based on return-path ellipsometry and retroreflection ...
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 ...
Spannungseinprägende aktive Filter zur Kompensation der Stromverzerrungen von Netzstromrichtern
(2023)
In this thesis, the use of voltage-source active filters for harmonic mitigation of grid-connected power converters is proposed. Based on a modeling of this novel converter configuration, an operating strategy is derived ...
Active Vision for Scene Understanding
(2021)
Visual perception is one of the most important sources of information for both humans and robots. A particular challenge is the acquisition and interpretation of complex unstructured scenes. This work contributes to active ...
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 ...
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 ...
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, ...