Browsing Naturwissenschaften, Mathematik und Informatik by Title
Now showing items 48-67 of 5814
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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 Measure-Theoretic Perspective on Multivariate Information with Applications to Data Science
(2025-09-17)This dissertation establishes a measure-theoretic foundation for information theory by formulating entropy, mutual information, and related quantities on a common type of probability spaces. Using Radon–Nikodym derivatives ... -
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 ... -
A Multi-Layered Identity and Access Management Solution for Establishment of Scalable Federated Identity
(2023-12-22)Federated identity management (FIM) systems are defined as a group of organizations (entities) that have agreed to establish trust relationships and share identity information to enable seamless access to resources across ... -
A Multi-objective Ant Colony Optimisation-based Routing Approach for Wireless Sensor Networks Incorporating Trust
(2012-08-31)In the near future, Wireless Sensor Networks (WSNs) are expected to play an important role for sensing applications, in the civilian as well as in the military sector. WSNs are autonomous, distributed, self-organised ... -
A Multi-Scale Assessment and Modeling of Water and Land Resources for Sustainability in the Lower Okavango River Basin: Integrating Climate Change, Land Use, and Hydrological Dynamics
(2025-07-11)This dissertation provides a multi-scale assessment and modeling of water and land resources within the Lower Okavango River Basin, aiming to foster sustainability by integrating the complex dynamics of climate change, ... -
A mutant with apetalous flowers in oilseed rape (Brassica napus): Mode of inheritance and influence on crop physiology and sclerotinia infection
(2001-02-23)Apetalous genotypes might be of interest in oilseed rape breeding because of their more efficient photosynthesis and reallocation of the photosynthesized assimilates and a lower probability ... -
A neuronal PIP3-dependent program of oligodendrocyte precursor recruitment and myelination
(2017-01-26)Evolution of myelin has enabled rapid impulse propagation and development of complex brain circuitry. However, the in vivo mechanisms that trigger and orchestrate proliferation of oligodendrocyte precursor cells (OPCs), ... -
A new approach to the investigation of Iwasawa invariants
(2015-01-05)Let K be a fixed number field, let p be a prime number, and let Z_p denote the additive group of p-adic integers. The growth of the p-Sylow subgroups of the ideal class groups of the intermediate fields in a Z_p-extension ... -
A new rodent model of Parkinson s Disease based on neuron specific downregulation of glutathione production.
(2009-04-21)Parkinson s disease (PD) is characterized by a progressive degeneration of the nigrostriatal system. Only in few patients genetic mutations have been identified to cause disease onset, ... -
A nidulans development and secondary metabolism requires coordinated VeA nuclear import and export
(2025-02-14)Survival of multicellular organisms requires the functional interplay between complex regulatory networks including gene expression, the ubiquitin proteasome protein degradation system, and intracellular transport control. ... -
A novel approach of immittance-spectra analysis and how it resolves a decade-old deviation of the Frenkel-Poole model
(2017-02-23)Immittance (i.e. a generalisation of all quantities containing identical information as e.g. the impedance) spectroscopy is a well-established and versatile method with a broad range of applications in a wide variety of ... -
A novel pathway for VLDL assembly in the mouse liver
(2006-12-11)LDL is thought to be endocytosed and completely degraded by peripheral cells and the liver. Using primary mouse hepatocytes, mouse liver perfusion and intravenous LDL-injection in mice, it ... -
A novel rRNA quality control function for Npl3 in Saccharomyces cerevisiae
(2024-03-25)In all domains of life, ribosomes are essential complexes that are the sole source for protein synthesis. Ribosome biosynthesis, the most energy-consuming process in a cell, has to be tightly regulated. Misregulation ... -
A Phytosociological Study of Glacier National Park, Montana, U.S.A., with Notes on the Syntaxonomy of Alpine Vegetation in Western North America
(2001-09-14)The alpine and parts of the subalpine vegetation of Glacier National Park, Montana, USA, are investigated using the European phytosociological method of Braun-Blanquet.Based on ... -
A post-frontier in transformation: land relations between access, exclusion and resistance in Jambi province, Indonesia
(2017-03-02)Since the early twentieth century, forests on the Indonesian island of Sumatra are converted into large plantation areas for the cultivation of boom crops, such as rubber and oil palms. This land use transformation goes ... -
A Process-Oriented Framework for Security Assessment of Cyber-Physical Systems
(2022-07-28)Due to digitalization and technological advancement, systems and their requirements are changing, and there is an increasing use of Cyber-Physical Systems (CPS) with a direct connection between the physical and the digital ... -
A real effective version of the Freĭman-Scourfield Theorem
(2025-11-04)We study the solvability of a Diophantine equation with mixed real exponents for sufficiently large natural numbers. The connection to a condition on the sum over the reciprocals of the exponents was first shown by Freĭman ...