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.
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Showing 1 to 20 of 28 for “"Spatial Science"”.
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Modeling Ozark Caves with Structure-from-Motion Photogrammetry: An Assessment of Stand-Alone Photogrammetry for 3-Dimensional Cave Survey
<p>Nearly all aspects of karst science and management begin with a map. Yet despite this fact, cave survey is largely conducted in the same archaic way that is has been for years - with a compass, tape measure, and a sketchpad. Traditional cave survey can establish accurate survey lines quickly. …
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Spatial Analysis of La Nana Bayou Watershed to Assess Stream Health
<p>The purpose of this study was to evaluate the feasibility of using land cover mapping to identify water quality indicators within a river basin, assessing whether this method provides greater efficiency compared to traditional field-based water quality testing. Land cover mapping has efficiently …
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Identifying Data Centers from Satellite Imagery
<p>We develop two different descriptors which can be utilized to describe satellite imagery. The first, the differential-magnitude and radius descriptor, describes a scene by computing the directional gradient of the scene with respect to a vector field whose solutions are circles around a pixel to …
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THE PLAGUE AND THE PARTHENON: CRUSADE, CLIMATE CHANGE AND DISEASE IN THE EARLY MODERN MEDITERRANEAN
<p>The present study examines the role epidemic diseases, specifically malaria and bubonic plague, played on the course of the Morean War (1684-1699). The Morean War was a major offensive by Christian powers, led by the Venetian Republic, against Ottoman controlled Greece. Christian victories …
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Flow Kinematics and Dynamics of the Gulf Stream From Composite Imagery
<p>A unique set of contemporaneous satellite-tracked drifters and five-day composite satellite images of the North Atlantic is studied in order to infer the near-surface flow kinematics and dynamics of the Gulf Stream. Using fractal and spectral analyses, two kinematic models, and a potential …
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UAS as an Inventory Tool: A Photogrammetric Approach to Volume Estimation
… powerful tool in remote sensing and geospatial applications. Due to the increased availability of low-cost UAS, this technology could soon revolutionize many industries, including those that require volumetric estimation. Traditionally volumetric inventories have been performed with tape …
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LAND SUITABILITY ANALYSIS FOR WINDFARM DEVELOPMENT IN TEXAS
<p>Due to the negative impact on the environment of conventional electric power generation methods, especially coal and oil-fired generating plants, wind power as an alternative for sustainable energy has received more attention in recent years. The purpose of this project was to apply Geographic …
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Influence of Altitude and Scan Angle on UAS-LiDAR Ground Height Measurement Accuracy in Juncus roemerianus Scheele (Black Needle Rush)-dominated Marshes
… marshes that are increasingly crucial in the spatial modeling of these fragile landscapes.</p>
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Toward Global Localization of Unmanned Aircraft Systems using Overhead Image Registration with Deep Learning Convolutional Neural Networks
… framing the global localization problem as a geospatial image registration problem in which overhead aerial and satellite imagery serve as a proxy for UAS imagery. A literature review is conducted covering the use of deep learning convolutional neural networks (DLCNN) with global localization and …
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Geographical Analysis of Offender Vulnerability: Modeling Coastal Hazards and Social Disorganization in Southern Mississippi
… offender residential patterns and examine the spatial relationship to physically vulnerable areas, local crime patterns, and offender support services in coastal Mississippi. A principal component analysis (PCA) consolidated explanatory measures from the criminology literature into the Social …
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Reassessing the Ranging Behavior of Black-And-White Ruffed Lemurs (Varecia variegata) in Ranomafana National Park, Madagascar
… both annual and seasonal home range size and spatial use varied between males and females, as well as within subgroups. Females exhibited larger annual home ranges than males, though not significantly so, and ranging behaviors varied by reproductive season. The topography of Mangevo appears to …
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Investigating the Spatial and Statistical Dimensions of Mortuary Choice in the Historical-Period Old City Cemetery in Roslyn, Washington
… differences in social group mortuary practices spatially and statistically. Using burials in Roslyn’s Old City Cemetery, this project developed a methods framework to assess mortuary practice through demographics, burial location, and monument/plot attributes. I tested correlations between …
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Geospatial Analysis of Droughts, Rice and Wheat Production, and Agrarian Vulnerability: A District-Level Study of the self-calibrated Palmer Drought Severity Index in India
… Local Moran’s I Statistic to elicit the spatial autocorrelation of droughts by decade from 1950 to 2009. This analysis showed the concentration of droughts in certain regions of India relative to others for each decade. Droughts in the 2000-2009 time period were particularly concentrated …
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The Image from the Road: Towards Mapping the Phenomenological
… adopter of the cognitive map approach to reveal spatial cognition, what or how people see their environment, specifically cognition of the urban environment. Lynch’s research aimed to develop empirical methods, to identify how people make spatial relationships. Contemporary tools like machine …
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Simulating the Impacts of Land-Use Land-Cover Changes on Cropland Carbon Fluxes in the Midwest of the United States
… is commonly used to create products with geospatial information on LULC changes. This geospatial information can be integrated into biogeochemical models to simulate the spatial and temporal patterns of carbon fluxes. We used the General Ensemble Biogeochemical Modeling System (GEMS) to study …
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Understanding the Nuances of Transit Accessibility: Temporal and Spatial Resolution, and Neoliberalism
… to jobs via public transit are modeled at a fine spatial resolution in an exploratory analysis across several cities in the United States. Next, temporal and spatial resolution and their impacts on accessibility to jobs via public transit are analyzed and quantified in several cities across the …
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Urban Land Use Efficiency in the United States: Assessing UN 2030 Sustainable Development Goals
… persist. K-means and K-medians clustering reveal spatial variations in urban growth patterns, with older cities and western urban areas exhibiting more compact development. Comparative analysis with international cases and literature suggests that U.S. cities are gradually transitioning from …
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Landscapes of Danger: A Geospatial Analysis of Perceived and Realistic Risk in Bryce Canyon National Park
… a wide breath of literature from the physical sciences, social sciences, and interdisciplinary disciplines like geography. Many attempts to estimate risk via natural hazards either focus on quantifying realistic risk or perceived risk of lay persons, with very little overlap between these …
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A Comparison of Land Use and Land Cover in Public Lands of the Northwestern Great Plains and High Plains Ecoregions and the Implications For Grassland Birds
… makes in these lands. Therefore, I investigated spatial relations among variations in amounts and distributions of publicly owned and managed grassland habitat and avian species richness. My study focused on two ecoregions, the Northwestern Great Plains and the High Plains, which comprise a …
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Far-Right Extremism in America: A Geospatial Analysis of Incident Distribution
… has been little empirical research on the spatial relationship of violent far-right extremism. Previous studies have only focused on portions of far-right violent incidents, such as homicides, or amalgamated all far-right extremist activity, including legal incidents. This study uses data …
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