E-Dissertationen: Browsing E-Dissertationen by Title
Now showing items 3344-3363 of 4069
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Spaceborne SAR Remote Sensing for Monitoring of Vegetation Dynamics in Arid and Semi-arid Environment
Bahteamy, Ayman Eliewa Elsayed Abdelhamid (2020-04-22)Drylands are under constant threat from multiple stresses and challenges, which occur as a result of a complex interaction of natural processes, and human-induced processes caused by unsustainable land use practices, leading ... -
Sparse Grid Methods for Higher Dimensional Approximation
Feuersänger, Christian (2010-09-10)Diese Arbeit befasst sich mit Dünngitterverfahren zur Lösung von höherdimensionalen Problemen. Sie zeigt drei neue Aspekte von Dünnen Gittern auf: Erweiterungen der elementaren Werkzeuge zur Arbeit mit Dünnen Gittern, eine ... -
Sparse Recovery with Fusion Frames
Ayaz, Ulaş (2014-07-09)Sparse signal structures have become increasingly important in signal processing applications as the technology progresses and a plethora of data needs to be handled. It has been shown in practice that various signals have ... -
Sparse representation of multivariate functions based on discrete point evaluations
Byrenheid, Glenn (2019-01-22)Functions provide one of the most important building blocks for model descriptions of reality. Central point of this thesis is the approximation of multivariate functions using Faber-Schauder hat functions. In the first ... -
Spatial and temporal variability of soil CO2 efflux in a spruce-dominated forest in the Eifel National Park, Germany
Dwersteg, Daniela (2012-05-18)The objective of this study was the analysis of temporal and spatial patterns of soil respiration on a catchment scale. This study is part of the DFG-financed project Transregio 32, which deals with the analysis of spatial ... -
Spatial Interaction of Agricultural Land Uses and their Impacts on Ecosystem Service Provision at the Landscape Scale
Inkoom, Justice Nana (2018-12-12)The relationship between agricultural land use and it impact on ecosystem services, including nutrient cycling and biodiversity conservation, is extremely complex. This complexity has been augmented by isolated research ... -
Spatial patterns of West-African plant diversity along a climatic gradient from coast to Sahel
Da, Sié Sylvestre (2010-07-20)Understanding species distribution patterns and the corresponding environmental determinants is a crucial step in the development of effective strategies for the conservation and management of plant communities and ecosystems. ... -
Spatial sensitivity of midbrain lateral line units of the goldfish, Carassius auratus
Meyer, Gunnar (2010-04-07)The mechanosensory lateral line system of fish responds to water motions and pressure gradients caused by biotic factors (e.g. prey, predators or conspecifics) or abiotic factors. Theoretical and neurophysiological data ... -
Spatial Verification with Wavelets
Buschow, Sebastian (2022-04-04)Modern numerical weather prediction models can simulate atmospheric processes at a resolution of single kilometers. With growing complexity, the realism of these simulations becomes increasingly difficult to quantify. ... -
Spatio-Temporal Estimation and Validation of Remotely Sensed Vegetation and Hydrological Fluxes in the Rur Catchment, Germany
Ali, Muhammad (2018-03-07)Operational availability of spatio-temporal vegetation and hydrological estimates are becoming increasingly attractive for hydrologic studies from local through regional and global scales, especially in remote areas and ... -
Spatio-temporal patterns of tree-growth response to climatic change
Friedrichs, Dagmar Anni (2008)Trees growing under temperate climate conditions are affected by numerous growth influences. Dendroclimatological analyses of tree-ring chronologies in which the long-term growth/climate relations are investigated, help ...
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Spatiotemporal dynamics of stress factors in wheat analysed by multisensoral remote sensing and geostatistics
Franke, Jonas (2007)Plant stresses, in particular fungal diseases, basically show a high variability in space and time with respect to their impact on the host. Recent ‘Precision Agriculture’ techniques allow for a spatially and temporally ... -
Spätkänozoische Reliefentwicklung der Schweizer Alpen
Bansemer, Kai (2004)Die Reliefstruktur der Schweizer Alpen ist das Resultat einer über Jahrmillionen andauernden Wechselwirkung zwischen tektonischen Hebungsprozessen und erosiven Oberflächenprozessen. Letztere werden maßgeblich durch das ... -
Species Identification and Delimitation in Nemerteans
Krämer, Daria (2017-01-24)The accurate identification and delimitation of species constitute the basis for assessing the biodiversity and phylogenetic relationships within the taxon Nemertea. However, working on nemertean taxonomy is challenging ... -
Spectral Data of Avian Plumage
Pohland, Georg (2007)Plumage coloration of museum bird skins provides significant morphometrical data, although it is difficult to objectively access the latter. Among the different methods of analyzing coloration, reflection-spectrophotometry ... -
Spectral Evolution in Blazars: The Case of CTA 102
Fromm, Christian M. (2013-02-05)Active Galactic Nuclei (AGN) are among the most powerful objects in the universe. In their centre they host a supermassive black hole (BH) with up to 1010 solar masses and an accretion disk is formed around them ... -
Spectral Properties of the Kernel Matrix and their Relation to Kernel Methods in Machine Learning
Braun, Mikio Ludwig (2005)Machine learning is an area of research concerned with the construction of algorithms which are able to learn from examples. Among such algorithms, so-called kernel methods form an important family of algorithms which have ... -
Spectro-spatial observations of galaxy clusters with Planck and CCAT-prime
Erler, Jens (2020-07-07)The Sunyaev-Zeldovich (SZ) effect is a spectral distortion of the cosmic microwave background (CMB) caused by inverse Compton scattering of CMB photons by free electrons in the hot intracluster medium (ICM) of galaxy ... -
Spectrophotometric Studies of Avian Plumage Coloration with Special Emphasis on the Ultraviolet Range
Mullen, Peter (2007)In my survey, altogether 1439 (15 %) of the 9702 bird species listed in Sibley & Monroe’s taxonomic list (1990, 1993) were measured by means of reflection spectrophotometry at different museum collections in Europe, the ... -
Spectroscopy of Xenon and Xenon-Noble Gas Mixtures for Bose-Einstein Condensation of Vacuum-Ultraviolet Photons
vom Hövel, Thilo Falk (2024-01-03)Bose-Einstein condensation of photons has first been observed in 2010 by the group of Martin Weitz in Bonn. In the experimental scheme, a photon gas is confined to a wavelength-size microcavity filled with a liquid dye ...