SyKonaS - Projektbericht. Nr. 5, Systemische Analyse der Wechselwirkungen zwischen Konfliktlinien und Rahmenbedingungen der Energiewende: Weiterentwicklung soziotechnischer Energieszenarien Anzeigen

Im Teilvorhaben SyKonaS/iKonS („Systemische Konfliktanalyse mittels Szenariotechnik“) wurden die technoökonomischen Szenarien um soziale Größen ergänzt und zu soziotechnischen Szenarien weiterentwickelt, um ihre jeweilige Konflikthaftigkeit abzuschätzen. Hierfür wurden zwölf durch die technoökonomischen Energieszenarien vorgegeben...

Analyse der Spallation von Hitzeschutzmaterialien in Wiedereintrittsströmungen Anzeigen

In der vorliegenden Arbeit wird das Phänomen der Spallation, das Absplittern fester Partikel aus der Oberfläche ablativer Hitzeschutzmaterialien, experimentell untersucht. Reine Kohlenstoffmaterialien sowie Kohlenstoff-Phenolharz Materialien werden in Plasmawindkanalanlagen unter drei verschiedenen Strömungsbedingungen getestet. D...

Exciton Bose-Einstein condensation and topology in Van Vleck-type Mott insulators Anzeigen

Immobilization of per- and polyfluoroalkyl substances (PFAS) : experimental and model-based analysis of leaching behavior Anzeigen

Die Dissertation untersucht die Elution und Immobilisierung von per- und polyfluorierten Alkylsubstanzen (PFAS) in belasteten Böden, insbesondere unter Verwendung von aktivkohlebasierten und zementbasierten Immobilisierungsansätzen. Ziel der Arbeit war es, das Elutionsverhalten von PFAS unter verschiedenen experimentelle...

Hollywood caught in two worlds? : the impact of the Bechdel test on the international box office performance of cinematic films Anzeigen

The Bechdel test is increasingly used in academia as a quality indicator for the portrayal of women in films. Previous studies explored how passing the Bechdel test affects box office earnings. However, earlier considerations were all limited to the US market. Therefore, the impact...

Mycostructures : growth-driven fabrication processes for architectural elements from mycelium composites Anzeigen

The paper discusses how characteristics of the mycelium growth process - namely different growth effectiveness depending on the nutrition content of the substrate, gradual solidification of the inoculated substrate, and bio-welding - can be a driving force for developing sustainable biofabricatio...

Frauen in der lokalen Politik und kommunale Wahlbeteiligung : ein Fall für deskriptive Repräsentation? Anzeigen

Diese Studie präsentiert neue empirische Evidenz für die Argumente feministischer Theoretiker*innen, welche die Notwendigkeit deskriptiver Repräsentation von Frauen unterstreichen. Anhand eines neuartigen Datensatzes wird die Wirkung der Präsenz von Frauen in lokalpolitischen Ämtern auf die Beteiligung bei Rats...

A time-accurate inflow coupling for zonal LES Anzeigen

Generating turbulent inflow data is a challenging task in zonal large eddy simulation (zLES) and often relies on predefined DNS data to generate synthetic turbulence with the correct statistics. The more accurate, but more involved alternative is to use instantaneous data from a pr...

A consistent finite element formulation of the geometrically non-linear Reissner-Mindlin shell model Anzeigen

We present an objective, singularity-free, path independent, numerically robust and efficient geometrically non-linear Reissner-Mindlin shell finite element formulation. The formulation is especially suitable for higher order ansatz spaces. The formulation utilizes geometric finite elements presented by Sander ...

Experimental evaluation and uncertainty quantification for a fractional viscoelastic model of salt concrete Anzeigen

This study evaluates and analyzes creep testing results on salt concrete of type M2. The concrete is a candidate material for long-lasting structures for sealing underground radioactive waste repository sites. Predicting operational lifetime and security aspects for these structures requires spec...

Binding free energies for the SAMPL8 CB8 “Drugs of Abuse” challenge from umbrella sampling combined with Hamiltonian replica exchange Anzeigen

Umbrella sampling along a one-dimensional order parameter in combination with Hamiltonian replica exchange was employed to calculate the binding free energy of five guest molecules with known affinity to cucurbit[8]uril. A simple empirical approach correcting for the overestimation of the affinit...

High-power, high-brightness solid-state laser architectures and their characteristics Anzeigen

The development of high-power diode lasers enabled new solid-state laser concepts such as thin-disk, fiber, and Innoslab lasers based on trivalent ytterbium as the laser-active ion, which resulted in a tremendous increase in the efficiency and beam quality of cw lasers compared to ...

Requirements for a smart product-service system development framework Anzeigen

Collective variables in data-centric neural network training Anzeigen

Neural Networks have become beneficial tools for physics research. While they provide a powerful tool for data-driven modeling, their success is accompanied by a lack of interpretability. This thesis aims to add transparency to the opaque nature of NNs by means of collective variab...

Implementation of a design guideline for aluminum foam sandwich based on industrial demands Anzeigen

Stability of compact symmetric spaces Anzeigen

In this article, we study the stability problem for the Einstein-Hilbert functional on compact symmetric spaces following and completing the seminal work of Koiso on the subject. We classify in detail the irreducible representations of simple Lie algebras with Casimir eigenvalue less th...

Fourier spotting : a novel setup for single-color reflectometry Anzeigen

Single-color reflectrometry is a sensitive and robust detection method in optical biosensor applications, for example for bioanalysis. It is based on the interference of reflected monochromatic radiation and is label free. We present a novel setup for single-color reflectometry based on the&...

Simulation of flow in deformable fractures using a quasi-Newton based partitioned coupling approach Anzeigen

We introduce a partitioned coupling approach for iterative coupling of flow processes in deformable fractures embedded in a poro-elastic medium that is enhanced by interface quasi-Newton (IQN) methods. In this scope, a unique computational decomposition into a fracture flow and a poro-elasti...

Zur Bewertung und Verbesserung der Ermüdungsfestigkeit von Stahl- und Verbundbrücken Anzeigen

Tragwerke wie Brücken unterliegen der Werkstoffermüdung unter zeitlich veränderlichen, häufig wiederholten Beanspruchungen. Um der Materialermüdung entgegenzuwirken und die Bauteillebensdauer zu verlängern, werden neue Tragwerke ermüdungsoptimiert konstruiert und Kerben wie Schweißnähte nach Möglichkeit zur Verbesserung der&#...