E-Dissertationen: Auflistung E-Dissertationen nach Titel
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Old Globular Clusters in Dwarf Irregular Galaxies
(2008)<p>One of the most pressing questions in astrophysics to date is resolving the history of galaxy assembly and their subsequent evolution. In the currently popular hierarchical merging” scenario, massive galaxies are believed ... -
Oligozäne Beckendynamik und Sequenzstratigraphie am Südrand des Nordwesteuropäischen Tertiärbeckens
(2004)Durch die Analyse von Bohrdaten aus 230 Explorations- und Forschungsbohrungen wird für die oligozäne Sedimentfüllung am Südrand des Nordwesteuropäischen Tertiärbeckens zwischen Belgien im Westen und Sachsen-Anhalt im Osten ... -
On a kinetic equation arising in weak turbulence theory for the nonlinear Schrödinger equation
(2016-12-22)We present a study of weak solutions to a kinetic equation of coagulation-fragmentation type. This quadratic equation (QWTE) is the leading order approximation for long times to the isotropic space-homogeneous weak turbulence ... -
On a non-local free boundary problem modeling cell polarization
(2022-11-08)The amplification of an external signal is a key step in direction sensing of biological cells, a process that contributes significantly in the regulation of cell shape. This thesis is concerned with a simple model for ... -
On affine Deligne-Lusztig varieties for GLn
(2005)In the first part of this thesis we study the global structure of moduli spaces of quasi-isogenies of p-divisible groups introduced by Rapoport and Zink. We determine their dimensions and their sets of connected components ... -
On Analysis of some Nonlinear Systems of Partial Differential Equations of Continuum Mechanics
(2003)In this thesis we consider systems of partial differential equations of continuum mechanics and analyze regularity properties of their weak solutions. <br /> The first chapter contains a detailed introduction and reviews ... -
On Approximability of Bounded Degree Instances of Selected Optimization Problems
(2013-08-07)In order to cope with the approximation hardness of an underlying optimization problem, it is advantageous to consider specific families of instances with properties that can be exploited to obtain efficient approximation ... -
On Approximability, Convergence, and Limits of CSP Problems
(2016-09-16)This thesis studies dense constraint satisfaction problems (CSPs), and other related optimization and decision problems that can be phrased as questions regarding parameters or properties of combinatorial objects such as ... -
On arithmetic families of filtered φ-modules and crystalline representations
(2011-05-10)We consider stacks of filtered phi-modules over rigid analytic and adic spaces. We show that these modules parametrize p-adic Galois representations of the absolute Galois group of a p-adic field with varying coefficients ... -
On arithmetic properties of Fuchsian groups and Riemann surfaces
(2015-02-11)In this thesis, Riemann surfaces and their fundamental groups are studied from an arithmetic point of view. First the image of the absolute Galois group of a number field under Grothendieck's representation with values in ... -
On Cells and Agents: Geosimulation of Urban Sprawl in Western Germany by Integrating Spatial and Non-Spatial Dynamics
(2014-07-18)Urban sprawl is one of the most challenging land-use and land-cover changes in Germany implicating numerous consequences for the anthropogenic and geobiophysical spheres. While the population and job growth rates of most ... -
On Discrete and Geometric Firefighting
(2021-08-19)Wildfires ravaging forests around the globe cost lives, homes and billions in damages every year, which motivates the study of effective firefighting. In the area of theoretical computer science, several different models ... -
On discrete surfaces: Enumerative geometry, matrix models and universality classes via topological recursion
(2019-03-21)The main objects under consideration in this thesis are called maps, a certain class of graphs embedded on surfaces. We approach our study of these objects from different perspectives, namely bijective combinatorics, matrix ... -
On GIT Compactified Jacobians via Relatively Complete Models and Logarithmic Geometry
(2014-07-09)In this thesis we study modular compactifications of Jacobian varieties attached to nodal curves.<br /> Unlike the case of smooth curves, where the Jacobians are canonical, modular compact objects, these compactifications ... -
On growth patterns and mechanisms in arctic-alpine shrubs
(2022-12-12)Arctic-alpine ecosystems are considered hot-spots of environmental change, with rapidly warming conditions causing massive alterations in vegetational structure. These changes and their environmental controls are highly ... -
On growth patterns and mechanisms in Mediterranean-alpine shrubs
(2023-05-22)(noch nicht zugänglich / not yet accessible) -
On Modeling and Assessing Uncertainty Estimates in Neural Learning Systems
(2023-04-20)While neural networks are universal function approximators when looked at from a theoretical perspective, we face, in practice, model size constraints and highly sparse data samples from open-world contexts. These limitations ... -
On moduli spaces of Riemann surfaces: new generators in their unstable homology and the homotopy type of their harmonic compactification
(2018-07-10)By M_g(m,n) we denote the moduli space of conformal structures on an oriented compact cobordism S_g(m,n) of genus g greater or equal 0 and with m+n greater or equal 0 enumerated, parametrized boundary components of which ... -
On Multilevel Methods Based on Non-Nested Meshes
(2010-12-15)This thesis is concerned with multilevel methods for the efficient solution of partial differential equations in the field of scientific computing. Further, emphasis is put on an extensive study of the information transfer ... -
On Problems Related To Galaxy Formation
(2016-05-17)The main idea of the underlying PhD study is to trace the history of the assembly of galaxies and of their subsequent evolution. We approach this issue in two ways: 1) by studying galaxy spin and 2) by studying the oldest ...
