Browsing Naturwissenschaften, Mathematik und Informatik by Title
Now showing items 28-47 of 5579
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A Dinuclear Dihydride Complex for Bimetallic Reductive Activation and Transformation of a Range of Inert Substrates
(2018-03-19)In this thesis, a dinickel(II) dihydride complex was used for small molecules activation, such as H2, O2, N2, S8, CO and so on. Here, we present the results of these works and analysis these results by various spectroscopies. -
A discrete geometric view on shear-deformable shell models
(2012-08-15)This thesis presents the construction of a geometrically nonlinear shear-deformable (Cosserat type) shell model by methods from discrete differential geometry (DDG). The model aims at applications in real-time simulations ... -
A feasibility study about the use of vector tomography for the reconstruction of the coronal magnetic field
(2006-03-20)The magnetic field contains the dominant energy per unit volume in the solar corona and therefore plays an important role in most coronal phenomena. But until now, no direct measurement of ... -
A Fine-Grain Scalable and Channel-Adaptive Hybrid Speech Coding Scheme for Voice over Wireless IP
(2006-12-13)Wireless LANs (WLANs) are being more and more widely deployed at present. They are a key element in dynamic business environments where permanent access to network resources is vital. They ... -
A Force Spectroscopy Setup to Mimic Cellular Interaction Processes
(2013-06-21)The main objective of this thesis was to establish a biophysical model system that permits to quantify forces involved in cell-cell contacts and cell-substrate-adhesion in a native-like fashion. For this purpose, colloidal ... -
A Fragment-Based Construction of a Neural Network Potential for Metal-Organic Frameworks
(2023-02-24)In recent years, many types of machine learning potentials (MLPs) have been developed, which are used to represent the high-dimensional potential-energy surface (PES) of a chemical system with similar accuracy as electronic ... -
A Framework for managing Quality of Service in Cloud Computing through Service Level Agreements
(2017-01-16)Until today, Cloud providers only offer a limited set of non-negotiable service levels to their customers. Most often these service levels are expressed as guarantees for availability together with the offer to have ... -
A Framework for Property-preserving Encryption in Wide Column Store Databases
(2017-08-15)While traditional database software usually relies on the relational SQL model, a lot of alternative approaches, commonly referred to as NoSQL (short for \Not only SQL") databases, occurred within the last years to meet ... -
A genetic system to study the nuclear pore complex permeability barrier of the yeast Saccharomyces cerevisiae
(2012-11-20)All nucleocytoplasmic transport occurs through nuclear pore complexes (NPCs). To hinder uncontrolled mixing of cytoplasmic and nuclear content, NPCs maintain the permeability barrier that suppresses passage of inert macromolecules ... -
A geobiological approach to carbonate factories and ecosystem changes across the Permian–Triassic boundary
(2022-04-05)Contemporary climate change is accelerating. Meanwhile, “Has the Earth’s sixth mass extinction already arrived?” is inquired. The Permian–Triassic crisis, as a possible analog in the Earth history, has aroused great ... -
A Grid-Adaptive Algebraic Hybrid RANS/LES Method
(2016-04-04)The present thesis considers the compressible Navier-Stokes equations to simulate the flow of air about basic and complex test cases. As numerical solution method the unstructured finite-volume solver DLR-TAU is used. The ... -
A healthy social life? Sociality and health indicators in wild red-fronted lemurs
(2022-06-29)In the last 40 years, an increasing number of studies from medicine, neurosciences, and psychology demonstrated links between many aspects of sociality, health, and fitness in humans and laboratory animals. Some studies ... -
A Hybrid Method for Inverse Obstacle Scattering Problems
(2007-05-30)We are interested in solving the time-harmonic inverse acoustic scattering problem. In this work, we present the state of the art of a new iterative method to numerically solve this problem. ... -
A knowledge base for generating patient-specific pathways for individualized treatment decisions in clinical applications
(2022-09-29)The vast amount of published data on molecular interactions makes it increasingly challenging for researchers and practitioners to find and extract the most relevant information to target the underlying diseases. Network ... -
A level set approach to integer nonlinear optimization
(2013-11-19)Integer nonlinear optimization programs form a class of very hard problems. Often it is much easier to solve the continuous relaxation. Therefore we are interested in this thesis in identifying special cases of integer ... -
A Massively Parallel Finite Element Framework with Application to Incompressible Flows
(2011-05-13)The incompressible Navier-Stokes equations describe the flow of Newtonian fluids or gases. They are used in many numerical simulations of flow problems. These simulations have become an ... -
A Mathematical Approach to Self-Organized Criticality in Neural Networks
(2008-12-22)Self-organized criticality (SOC) is one of the key concepts to describe the emergence of complexity in natural systems. Recently a candidate for a SOC system has been found in the recordings ... -
A matter of brightness: table-top X-ray generation inside waveguides and X-ray holography with single free-electron laser pulses
(2022-03-22)X-ray microscopy delivers insights into the structure of optically opaque bulk specimens with high spatial resolution. The source brightness poses a limit on the achievable resolution, however. While table-top X-ray sources ... -
A Mayer-Vietoris Spectral Sequence for C*-Algebras and Coarse Geometry
(2019-04-10)Let $A$ be a C*-algebra that is the norm closure $A = \overline{\sum_{\beta \in \alpha} I_\beta}$ of an arbitrary sum of C*-ideals $I_\beta \subseteq A$. We construct a homological spectral sequence that takes as input the ... -
A method for the genetically encoded incorporation of FRET pairs into proteins
(2014-09-03)Proteins are composed of 20 canonical amino acids whose unique arrangements predefine a protein’s structure and function. Importantly, most proteins are not static conformations but rather very dynamic entities that undergo ...