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 275 for “"local scale"”.
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Local-scale optical properties of single-crystal ferroelectrics
Das Ziel dieser Arbeit ist die optische Untersuchung von ferroelektrischen Domänen und Domänenwänden auf lokaler Skala. Dafür wurden neuartige nichtinvasive Ansätze entwickelt, die auf der Anwendung optischer Rastersondenmikroskopie basieren. Die untersuchten Schlüsseleigenschaften umfassen den …
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The effects of local-scale resource heterogeneity on tropical tree communities
… tropical forest tree species and how they affect local (< 1 km) tree community structure. This research draws upon data from eight large (24-50 ha) tropical forest plots located around the globe, for which all trees > 1 cm in diameter have been mapped. Additionally, topographic variation has been …
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Groundwater Modeling of Managed Aquifer Recharge at the Regional and Local Scale
… used to simulate the combined impact of the full-scale SWIFT project. This study estimated the change in hydraulic head in the Potomac Aquifer System caused by the proposed James River recharge well field at a regional and local level. That estimation required the use of a widely accepted model of …
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Interpreting Global Emissions Scenarios into a Local Scale Urban Growth Model: Truckee Meadows Metropolitan Region, NV, USA
… regions of the world and at various sub-global scales, but this process has seen limited application at the local scale or in North America. The methodology for interpreting these scenarios to the local scale is discussed, along with how the scenarios are used to drive a cellular automata urban …
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Sea Ice Cover Deformation on the Local Scale and Mesoscale and Its Relationship to Atmosphere-Ocean Processes
… modest number of studies has addressed the cross-scale analysis of the ice deformation. The aim of the present research has two foci: to investigate the variability of ice deformations and identify mechanisms responsible for their generation, and to explore the relationships of the ice deformation …
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Anticipation nationwide risks to drinking water : predicting local scale contamination of community supply wells by gasoline additives
Only ten years after the increased addition of methyl-tert-butyl-ether (MTBE) to U.S. gasolines, nationwide MTBE contamination of thousands of drinking water supply wells has been widely documented, reflecting enormous environmental and economic costs. Due to its abundance in gasoline, high aqueous …
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Multi-scale features of atmospheric rivers and the linkages with local-scale hydrological impacts on the U.S. West Coast
… cycle and are characterized by a multi-scale nature. On the one hand, ARs are embedded in the planetary-scale Rossby waves and account for the majority of poleward moisture transport in the midlatitudes. On the other hand, ARs are the fundamental reason for generating extreme basin-scale …
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The provision of ecosystem services at the local scale along a rural-urban gradient : a case study of a typical UK metropolitan city
… have generally focused at landscape andglobal scales, failing to appreciate the provision at local scales. The research reported in thisthesis focuses on the provision of nine ecosystem services of importance to urbanenvironments (aesthetic, recreation, spiritual, climate change adaptation and …
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Exploring the relationship between the water-energy-food nexus and livelihoods at the local scale: a case study focussed on a low-income residential area in Velddrif, South Africa
… to addressing WEF security at large spatial scales in response to resource scarcity concerns. In contrast, WEF security at local levels, particularly amongst the poor, has received little attention. This thesis addresses this gap by exploring the application of the WEF nexus at the local …
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Development of techniques for rapidly assessing the local air quality impacts of airports
… Currently, dispersion models can assess these local-scale (distances ~10 km) impacts, calculating long-term (annual) average concentrations of PM2.5. However, these models typically require hours to complete an analysis for one site, hindering their use for assessing local-scale impacts over …
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A hydroclimatic assessment of the U.S. corn belt across spatial and temporal scales
… patterns at specific locations on Earth (large-scale climate) and the climate established at Earth's surface resulting from the daily fluxes of radiant energy and water in its various forms between the atmosphere, Earth's surface, and the subsurface (local-scale climate) (Shelton 2009). This …
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The relative influence of competition and coevolution on the community structure of insectivorous bats in Southern Africa
… obtained data for these analyses by sampling the local and regional species richness of insecti vorous bats of southern Africa between 2001 and 2004. Rarefaction and species richness estimators indicated that species inventories of the fynbos, forest, and savanna ensembles, and the Cape Floristic …
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Intra-seasonal variability of Southern Ocean primary production: the role of storms and mesoscale turbulence
… measured (eddies occupying the meso to sub-mesoscale). The presence of the passage of intense storms and meso to sub-mesoscale eddy variability has the potential to strongly impact the intraseasonal variability of the upper ocean environment where phytoplankton live. Yet, exactly how …
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BIOGRAPHIES OF PEOPLE AND PLACE: THE HAREWOOD ESTATE, 1698-1813
… The work focuses around the three themes of scale, multivocality and biography to provide a new perspective on post-medieval estate landscapes. A biographical approach is used to conciliate different scales of analysis and give meaning to the local, fleeting lives of the estate’s inhabitants. …
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Determinants of native and exotic plant species diversity and composition in remnant oak savannas on southeastern Vancouver Island
Many regional and local factors can influence the distribution of native and exotic species in ecological communities. I examined the regional- and local-scale determinants of native and exotic vascular plant species richness and composition in a highly fragmented oak savanna ecosystem on …
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Impact of a Historical Translocation on Populations of White-Tailed Deer Odocoileus virginianus
… This indicated historical genetic impact on a local scale; however, other "native" Georgia populations which did not directly receive translocated individuals showed no evidence of genetic impact. Impact of the translocation was detected in local deer populations as a significant difference …
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Optimizing peak gust and maximum sustained wind speed estimates from mid-latitude wave cyclones
… kriging when modeling continental-scale wind storms because of the identification of strong directional correlations across space. Results suggest that coastal areas and mountainous areas experience the highest wind intensities during wind storms. These same areas also experience …
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Patterns and causes of intertidal community structure around the coast of Southern Africa
… three major biogeographic provinces. The large-scale variations were due to geographical differences in the physical environment including temperature, nutrients and primary production. Large-scale and local-scale vertical and horizontal zonation of intertidal communities were investigated. …
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