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 20 for “"geostatistical analysis"”.
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Determination of Reservoir Characteristics Using Geostatistical Analysis
… spatial distribution of reservoir properties. Geostatistical methods, such as kriging, cokriging, and sequential simulation have been applied to integrate well-log data and seismic attributes. However, conventional deterministic methods of geostatistics, kriging and cokriging often have …
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Bayesian and geostatistical analysis of the effect of air pollution on asthma hospitalisation in Perth
… in the Perth metropolitan region. A time series analysis of the data shows that the seasonality for NO2 and CO coincides with the health data seasonality for all years and all postcode groups. The study makes use of geostatistical and statistical techniques within the hierarchical stages of …
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Variabilidade espacial de atributos físicos em latossolo amarelo de área experimental
… and penetration resistance (RMP). We performed geostatistical analysis and descriptive. Soil bulk density and moisture were the variables with greater and lesser extent, 213 and 6.5 m, respectively, expressing their knitting sample for future studies. The penetration resistance showed no spatial …
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Spatial variability of peat subsidence in Southeast Asia by land use
Variograms are a valuable tool for geospatial analysis as they provide a description of how data are correlated as a function of separation distance. Their application can prove valuable for not only analyzing variations in environmental parameters such as peat subsidence in two dimensional space, …
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Parallel computing on geostatistical data using CUDA
Data analysis is receiving considerable attention with the design of new graphics processing units (GPUs). Our study focuses on geostatistical data analysis, which is currently applied in diverse disciplines such as meteorology, oceanography, geography, forestry, environmental control, and …
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Interplay of porous media and fracture stimulation in sedimentary enhanced geothermal systems : Red River Formation, Williston Basin, North Dakota
… interpolation method in ArcGIS. A GIS and geostatistical analysis was completed to show that there is a satisfactory correlative relationship between the surface lineaments and the basement faults in the study area. Consequently, the orientations and locations of the surface lineaments and …
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Implications of permeability uncertainty within engineered geologic fluid systems
… is a culmination of four projects: (1) a geostatistical analysis resulting in a spatial correlation model of regional scale permeability within the CRBG, (2) a Monte Carlo-type modeling studying investigating the effects that permeability uncertainty has on the injectivity and storativity …
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Integrating basic remote sensing, terrain analysis and geostatistical methods to generate spatially explicate continuous soil attribute maps for Fraser Experimental Forest
… of Geographical Information Systems (GIS) and geostatistical analysis to further quantify the complex spatial relationships of soils and landscapes. These advances have resulted in a new field of study termed pedometrics, which focuses on the application of mathematical and statistical methods …
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Spatial epidemiology of Rhodesian sleeping sickness in recently affected areas of central and eastern Uganda
… A traditional one-step logistic regression analysis of disease prevalence was compared with a two-step hierarchical logistic regression analysis. The two-step method included the analysis of disease occurrence followed by the analysis of disease prevalence in areas with a high predicted …
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Development of a Procedure to Evaluate Groundwater Quality and Potential Sources of Contamination in the East Texas Basin
This study contributes a procedure, based on data analysis and geostatistical methods, to evaluate the distribution of chemical ratios and differentiate natural and anthropogenic contaminant sources of groundwater quality in the East Texas Basin. Four aquifers were studied, Sparta, Queen City, …
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Precision horticulture: application on apple orchards
Precision horticulture and spatial analysis applied to orchards are a growing and evolving part of precision agriculture technology. The aim of this discipline is to reduce production costs by monitoring and analysing orchard-derived information to improve crop performance in an environmentally …
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Wood and soil-atmosphere carbon dioxide fluxes from a tropical forest ecosystem
… Station in Costa Rica (LS) using infrared gas analysis methods. Annual Stem CO2 fluxes for TNF and LS averaged 1.7 mumol m-2 s-1 and 4.5 mumol m-2 s -1, respectively. At TNF wood surface area was calculated (4161 m 2 ha-1) and wood CO2 flux extrapolated to ground area resulted in an annual flux …
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Ore Types And Fluid Regimes: Macassa Gold Mine, Kirkland Lake
… in the coprecipitation of quartz and pyrite.;Geostatistical analysis of gold distribution within a type zone of Breccia ore at Macassa indicates a general continuity which can be approximated by theoretical semivariogram models. However, experimental semivariograms calculated along three …
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Seasonal variation, spatial distribution and decision–making system to control of the Leucoptera coffeella in coffee arabica fields
… coffeella in coffee crops in the Cerrado through geostatistical analyses and propose a decision-making control system based on management zones. L. coffeella densities were higher in the Cerrado area compared to the Atlantic Forest. In the Cerrado, air temperature and potential evapotranspiration …
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Plant Successional Patterns at Sperry Glacier Foreland, Glacier National Park, MT, USA
… System (GIS) derived variables, and subsequent geostatistical analysis, I specifically assessed: (1.) vegetative trends (percent cover, species richness, Shannon's diversity, species evenness, composition, and species turnover) over a 170-year chronosequence, and (2.) vegetative trends over …
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Ndma Formation During Chloramination: Temporospatial Distribution Of Ndma Precursors, The Effect Of Lime Softening Treatment, And Precursor Identification Via Non-Targeted Analysis
… precursors via nontargeted mass spectrometric analysis. The seasonal and spatial variations in NDMA precursor levels in Crow River was assessed by approximately monthly sampling at twelve locations over 18 months. NDMA precursor concentrations was assessed as NDMA formation potential under …
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Transclave Economy: Immigrant Business Survival in An Era of Pandemic
… By utilizing mixed methodology, including geostatistical analysis, interviews, surveys, and longitudinal ethnographic fieldwork from 2020 to 2021, this dissertation reveals how the enclave economy has developed into a multiethnic contested place where immigrants from different backgrounds …
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Integrative Geophysical and Environmental Monitoring of a CO2 Sequestration and Enhanced Coalbed Methane Recovery Test in Central Appalachia
A storage and enhanced coalbed methane (CO2-ECBM) test will store up to 20,000 tons of carbon dioxide in a stacked coal reservoir in southwest Virginia. The test involves two phases of CO2 injection operations. Phase I was conducted from July 2, 2015 to April 15, 2016, and injected a total of 10, …
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Modeling of Groundwater Heavy Metals and Methane Pollution for a Municipal Landfill Utilizing Data Driven and Numerical Modeling Techniques
… first part of the thesis is on spatial-temporal analysis of dissolved metal pollutants near an unlined municipal landfill in a semi-arid climate. The data was collected from 5 groups of wells located upstream and downstream of the landfill in 2012 and 2015. The results represented that in 2015, …
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Development of a Precision Mite Management Program for the Control of the Ectoparasite Varroa destructor in Hives of Apis mellifera L.
… board sampling methods. Spearman's nonparametric analysis showed that there was a significant correlation (ρ = 0.47, P<0.001) in mite population levels for the soapy water roll and sticky board methods for sampling conducted from February to September, 2013 (the SWR method was not used in …