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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Search results

Showing 1 to 2 of 2 (0.098 seconds)
1

A GIS Model for Predicting Potential "High Risk" Areas of West Nile Virus by Identifying Ideal Mosquito Breeding Habitats

Wallis, Robert Charles 07 May 2005 (has links)
West Nile virus has become a major risk to humans since its first appearance in New York City in 1999. Physicians and state health officials are interested in new and more efficient methods for monitoring disease spread and predicting future outbreaks. This study modeled habitat suitability for mosquitoes that carry West Nile virus. Habitat characteristics were used to derive risk maps for the entire state of Mississippi. Statistical significance tests yielded objective evidence for choosing among many habitat variables. Variables that were significantly correlated with diagnosed human cases for 2002 were combined in weighted linear algebraic models using a geographic information system (GIS). Road density, slope, and summer precipitation minus evaporation (P-E) were the most significant variables. GIS-based model results were compared with results from logistic regression models. The algebraic model was preferred when validated by 2003 human cases. If adopted, GIS-based risk models can help guide mosquito control efforts.
West Nile virus
geographic information system
Mississippi
habitat suitability
raster modeling
2

Socioeconomic Development In The Southeast Region Of The United States From 1995 - 2000: A Structural Equation Modeling And A Gis Modeling Approach

Eldev-Ochir, Erdenechimeg 15 December 2007 (has links)
This research presented in this study demonstrates that county level population growth, economic growth, and localized social structure are interrelated. An analysis of the spatial distribution of these factors in the Southeast Region of the United States during the period of 1995-2000 also indicates the importance of differences in rural versus urban and coastal versus non-coastal areas as well as the importance of such factors as highways, large cities, and universities in economic, population, and social structure interrelationships. An extensive dataset is used in the analysis as a number of analysis tools including statistical analysis, econometric models, spatial econometric models, structural equation models, and GIS mapping.
Structural Equat
Nonrecursive SEM
GIS Raster Modeling
Spatial Lag Modeling
Spatial Econometrics
Cluster Analysis
GIS Modeling
SEM
Economic Growth in the Southeast
Population Growth in the Southeast
Multivariate Analysis
Social Development in the Southeast
Confirmatory Factor Analysis
CFA
EQS
Southeast Region of the United States

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