Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 180 for “"spatial extent"”.
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A Chemical Study of Garnet Growth in the Moine Rocks of Western Scotland: Evidence of the Spatial Extent of Equilibrium
Made available in DSpace on 2014-12-14T07:10:55Z (GMT). No. of bitstreams: 1 8009121.pdf: 4918987 bytes, checksum: 1fa6c96f5df7c0b151acc3d8dc3b840f (MD5) Previous issue date: 1979
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Remote sensing analyses for open pit mine area computation. A comparative study on the implementation of multi-spectral classifications and crowdsourcing to compute the spatial extent of four open-pit mines in Indonesia, Australia, Canada and Brazil
… EHP requires detailed knowledge about the spatial extent of the mining area. Even though several studies have already been conducted in the domain of mine detection and mapping, no comparative study has yet been carried out that investigates several remote sensing analyses, which are …
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An analysis of the spatial and temporal changes in the Riparian zone of the Berg River in the vicinity of Hermon: implications for governance
… identifies changes in vegetation composition and spatial extent of the riparian zone. The study site is a stretch of the Berg River in the Hermon area. Changes in vegetation and the spatial extent of the riparian zone over time were identified and mapped using aerial photographs of the study area …
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3D spatial layout and geometric constraints for scene understanding
… objects do not occur randomly but follow certain spatial rules. Many existing computer vision approaches tend to ignore this aspect of understanding images. In this work, we build representations and propose strategies for exploiting such constraints towards extracting a 3D understanding of a …
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Pastoral mobility in a variable and spatially constrained South African environment
… the different movement patterns and their spatial extent within a spatially constrained environment. This thesis also investigated the role of vegetation type and condition in the distribution of grazing pressure and further discussed the implications of using variable stocking rates in a …
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Clock-based segmentation in the red flour beetle Tribolium castaneum
… of Tc-cad regulators. Specifically, the spatial extent, frequency, and width of Tc-eve waves correlate with the spatial extent, expression level, and slope of Tc-cad gradient, respectively, as predicted by computer modeling. These results pose intriguing evolutionary questions, since …
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Environmental, spatial and temporal drivers of plant community composition in British forest habitat
… local environmental conditions and forest spatial extent in order to investigate the ways in which species richness and functional diversity in forest communities are dependent upon local and landscape scale drivers, and to quantify the strength of these relationships. This provides novel …
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Aspects of dynamically enhanced electromagnetic fields from charged relativistic sources in a beam pipe
The spatial and spectral content of electromagnetic …fields produced by charged sources in prescribed motion, moving in an infinitely long cylindrical beam pipe with perfect electrically conducting boundary conditions, is investigated in order to understand dynamic …field effects. In the …
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Essays in Suface Water Quality Valuation
… throughout the United States. I consider five spatial scales and estimate models using different sample selection criteria and model specifications. The results indicate considerable spatial heterogeneity both within and across the four U.S. Census regions. However, I also find heterogeneity …
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Modeling Culex tarsalis Coquillett abundance on the northern Colorado Front Range using a landscape-level approach
… has greatly enhanced the understanding for the spatial and temporal distribution patterns of vectors, thereby enabling improved vector control operations and disease management response. Since the initial detection of West Nile virus (WNV) in Colorado in 2002, the northern part of the Colorado …
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Toxicity and Contamination in Bear Creek Sediment: Spatial Analysis and Implications for Risk Assessment
… contaminants. The present study maps the spatial extent and depth profile of toxicity and contamination in Bear Creek, and explores correlations between heavy metals, organic contaminants, and toxic responses. Two novel analytical techniques – handheld XRF and an antibody-based PAH …
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MRI at 3 T of brain functions and fibre tracts adjacent to intracranial tumors
The aims of the studies were: to evaluate the spatial resolution of fMRI at 3 T by studying fingersomatotopy in area 3 b of the primary sensory area (Paper 1); to investigate the potential of fMRI at 3T as a clinical tool for preoperative evaluation of patients with intracranial tumors (Paper 2); …
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Extreme Stellar Populations in the Universe: Backsplash Dwarf Galaxies and Wandering Stars
… the most massive satellites has a much smaller spatial extent than that produced by lower mass satellites, meaning that baryon prescriptions designed to supress star formation in low mass satellites also shrink the spatial extent of intergalactic light. It may be possible to use observations of …
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A Device Compatible with Functional Magnetic Resonance Imaging for Assessing Brain Activity During a Finger Force Tracking Motor Task
… literature. Force tracking elicited a greater spatial extent of neural activation, and also allowed the user to more accurately follow the visual track. This is the first hand extensor force sensor developed for this application, and can be used longitudinally in a wide range of rehabilitation …
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Fluctuation Electron Microscopy Investigations of Medium Range Order in a-Silicon and a-Silicon:hydrogen Thin Films
… UIUC. This technique provides information on the spatial extent of the medium range order. Nanodiffraction patterns are obtained using electron probes with a full width at half maximum between 1--4 nm. A convenient method of forming coherent nanoprobes has been developed where the probes are …
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Pseudospin transfer torques and the effect of disorder in semiconductor electron bilayers
… materials with mean-free paths larger than the spatial extent of the system.
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Extreme value modelling of heatwaves
… periods of hot weather will last and what the spatial extent of the event will be. For heatwaves, it is vital to explicitly model extremal dependence in time and space. An aim of this thesis is to develop extreme value methods that can accurately capture the temporal evolution of heatwaves. …
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Scanning tunneling microscopy and spectroscopy of topological materials and heterostructures in thin films and devices
… WTe2 is explored and discussed. A study of the spatial extent of 1D edge states of WTe2 is presented. A new process combining nanopatterned superconductors and topological materials is proposed and implemented. The proposed geometry in devices suitable for scanning tunneling microscopy studies …
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Statistical models for extreme weather events
… or adapted to address questions related to the spatial extent of an event, which is important for policy makers eager to reduce the economic and societal impacts associated with extreme weather. One aim of this thesis is to improve inference with regarding to existing extreme value methodology. …
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