Now showing items 51-60 of 66
Terrain and Landcover Effects of the Southern Appalachian Mountains on the Low-Level Rotational Wind Fields of Supercell Thunderstorms
(Virginia Tech, 2012-04-30)
That tornadoes cannot occur in mountains due to disruptive influences of the complex terrain is a common misperception. Multiple tornadoes occur each year in mountainous environments, including the Appalachian Mountains. ...
Evaluation of TIN extraction methods for various terrain textures
(Virginia Tech, 1996)
Modeling Blister Rust Incidence in Whitebark Pine at Northern Rocky Mountain Alpine Treelines: A Geospatial Approach
(Virginia Tech, 2009-05-06)
The status of whitebark pine (Pinus albicaulis), a foundation and keystone species and a pioneer establisher at alpine treeline, is threatened by the invasive and exotic fungal pathogen (Cronartium ribicola) that causes ...
RF and GIS: Field Strength Prediction for Frequencies between 900 MHz and 28 GHz.
(Virginia Tech, 2001-08-15)
This thesis presents a model to predict signal strength for frequencies between 902 MHz and 28 GHz. The model approximates diffraction using the knife-edge concept and equations proposed by Lee (1985). LOS pathways are ...
GIS and Satellite Visibility: Viewsheds from Space
(Virginia Tech, 2005-04-28)
The Global Positioning System (GPS) has recently become the significant mapping tool for millions of customers worldwide, providing its users with accurate terrestrial positions almost instantaneously. The functionality ...
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 ...
An Analysis of Emergency Vehicle Crash Characteristics
(Virginia Tech, 2003-08-07)
Crash data suggests that intersections are areas producing conflicts among the various road users because of entering and crossing movements. Traffic signal control systems may not always be sufficient in preventing ...
Real-Time Spatial Monitoring of Vehicle Vibration Data as a Model for TeleGeoMonitoring Systems
(Virginia Tech, 2005-05-02)
This research presents the development and proof of concept of a TeleGeoMonitoring (TGM) system for spatially monitoring and analyzing, in real-time, data derived from vehicle-mounted sensors. In response to the concern ...
The development of an interactive computer model for managing geologic hazard databases
(Virginia Tech, 1996)
The Benefits of EcoRouting for a Parallel Plug-In Hybrid Camaro
(Virginia Tech, 2017-07-14)
EcoRouting refers to the determination of a route that minimizes vehicle energy consumption compared to traditional routing methods, which usually attempt to minimize travel time. EcoRoutes typically increase travel time ...