Now showing items 21-30 of 67
Spatial Distribution of Four Exotic Plants in Relation to Physical Environmental Factors with Analysis using GIS
(Virginia Tech, 2009-01-30)
The spatial distributions of four plant species native to Asia, yet considered invasive in southwestern Virginia, were studied in order to produce predictive habitat maps. The study took place in the mountains to the north ...
Evaluation of TIN extraction methods for various terrain textures
(Virginia Tech, 1996)
GIS Aided Radio Wave Propagation Modeling and Analysis
(Virginia Tech, 2005-05-12)
The analysis of radio wave propagation is a crucial part in designing an efficient wireless communication system. The Geographic Information System (GIS) can be incorporated into this procedure because most of the factors ...
Modeling land suitability for the Tom's Creek Basin, Blacksburg using Geographic Information System
(Virginia Tech, 1996-07-24)
Lyme Disease Emergence in Virginia: An Examination of the Demographic and Environmental Variables Correlated to the Spatial Pattern of Disease Incidence
(Virginia Tech, 2013-06-06)
Since its initial identification in 1975, Lyme disease has become a public health concern in the U.S. Increased concern is sparked by the rapid rate at which the disease is emerging into new areas. One area of disease ...
Integration of a GIS and an expert system for freeway incident management
(Virginia Tech, 1996-09-15)
Congestion due to traffic accidents and incidents can be reduced through effective freeway incident management. However, this is plagued by a number of problems and requires a high level of expertise and coordination among ...
GIS and the dairy industry: examining the roles of government regulation and dairy cooperatives in the shipment of fluid milk
(Virginia Tech, 1996-09-05)
<p>This thesis deals with the use of Geographic Information Systems (GIS) in the transport of raw fluid milk from its origin on the farm to the processing plant. Current applications of GIS in transportation planning are ...
Distributed Hydrologic Modeling of the Upper Roanoke River Watershed using GIS and NEXRAD
(Virginia Tech, 2003-03-27)
Precipitation and surface runoff producing mechanisms are inherently spatially variable. Many hydrologic runoff models do not account for this spatial variability and instead use "lumped" or spatially averaged parameters. ...
The Use of GIS for Integrated Watershed Analysis
(Virginia Tech, 2000-04-26)
Practitioners of watershed management are increasingly turning to computer models to understand and make decisions about the diverse problems that occur in the watershed. Such models can provide insight into how human ...
Estimating Hg Risk to the Common Loon (Gavia immer) in the Rangeley Lakes Region of Western Maine: A Regression Based GIS Model
(Virginia Tech, 2004-04-21)
This research relates Hg levels in the Common Loon (Gavia immer) to a variety of physical factors. Constructed within the framework of a GIS system, this model analyzes the spatial relationships and the influence of physical ...