Browsing Naturwissenschaften, Mathematik und Informatik by Title
Now showing items 48-67 of 5597
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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 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 regional view of an impending invasion: western corn rootworm development in Northern Germany
(2013-05-10)We examined the immature development of the invasive maize pest western corn rootworm (Diabrotica virgifera virgifera LeConte; WCR) under Northern German temperature regimes. This research was part of the Climate impact ... -
A remote sensing and geospatial statistical approach to understanding distribution and evolution of ignimbrites in the Central Andes with a focus on Southern Peru
(2014-03-25)This PhD thesis investigates timing, cause and location of “ignimbrite flare ups” during the evolution of the Central Andean uplift and relates volcano-tectonic structures and calderas with shallow intrusive stocks to ... -
A Role for Glycogen Synthase Kinase 3 beta in the Regulation of Glucagon Gene Transcription by Insulin
(2003-11-21)Insulin binding to its receptor on the a-cells in endocrine pancreas initiates a signalling cascade that results in inhibition of glucagon gene transcription. Evidence suggests that the ... -
A search for the Rieger-type periodicity on the Sun- like stars
(2023-10-06)Solar activity undergoes variations over many different timescales. The main periodicity is 11 years, called Schwabe cycle. In addition to the 11-year cycle, shorter periodic variations known as Rieger cycles have been ... -
A Secure and Privacy-Friendly IP-based Emergency Services Architecture
(2019-12-20)Emergency services support is one of the most valued features of the public switched telephone network. With the transition to IP-based communication the opportunity to re-design the emergency services communication ... -
A Security Aware Fuzzy Enhanced ACO Routing Protocol in MANETs
(2018-12-20)As Mobile Ad hoc NETworks (MANETs) grow more popular and are deployed as solutions in various applications such as road safety in Vehicular Ad hoc NETworks (VANETs), wildlife tracking in Wireless Sensor Networks (WSNs) and ... -
A semi-microscopic model of synaptic transmission and plasticity
(2000-08-28)A stochastic model of synaptic transmission has been designed on the basis of electro-physiological experiments. Monte Carlo simulations are performed which include presynaptic mechanisms ...