Now showing items 1-10 of 65
Modeling Flash Floods in Small Ungaged Watersheds using Embedded GIS
(Virginia Tech, 2006-01-27)
Effective prediction of localized flash flood regions for an approaching rainfall event requires an in-depth knowledge of the land surface and stream characteristics of the forecast area. Flash Flood Guidance (FFG) is ...
Geographic Analysis of Viticulture Potential in Virginia
(Virginia Tech, 1998-09-15)
The state of Virginia was analyzed to establish its suitability for grape culture. This investigation occurred in two phases: a small scale analysis that encompassed the entire state, and a large scale analysis which ...
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 ...
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. ...
Using Light Detection and Ranging (LiDAR) Imagery to Model Radio Wave Propagation
(Virginia Tech, 2003-03-20)
The purpose of this study was to determine if light detection and ranging (LiDAR) imagery could provide a significantly more accurate data set for modeling near line-of-sight (LOS) propagation at higher frequencies, ...
Habitat preferences of the eastern fence lizard, Sceloporus undulatus, in southwestern Virginia
(Virginia Tech, 2007-05-04)
Habitat preference of the eastern fence lizard, Sceloporus undulatus, was investigated in southwestern Virginia. Habitat features were measured at 158 lizard-centered plots and at paired random plots. Landscape-level ...
Usefulness of GIS in Mass Transit: An Analysis of the riderhip characteristics of Greater London and D.C. Metropolitan Region
(Virginia Tech, 2004-05-24)
The Geographic Information Systems (GIS) programs offered a multitude of useful analysis tools for a variety of purposes in the transit industry. One of the significant contributions that GIS offers is the ability to manage ...
Using Qualitative Geographic Information Systems to Explore Gendered Dimensions for Conservation Agriculture Production Systems in the Philippines: A Mixed Methods Approach.
(Virginia Tech, 2013-05-14)
This research identifies gender-based constraints and opportunities for the adoption of conservation agriculture production systems (CAPS) based on a case-study with smallholder farmers in two villages in Misamis Oriental, ...
Land use and Opportunities for Crime: Using GIS as an Analysis Tool
(Virginia Tech, 2001-05-22)
It is important to identify the link between land use and opportunities for crime in order to create safer living environments in cities. Changes in land use change urban form and this leads to changes in the routine ...
Modeling land suitability for the Tom's Creek Basin, Blacksburg using Geographic Information System
(Virginia Tech, 1996-07-24)