<TITLE>The Use of GIS for Integrated Watershed Analysis:</TITLE><FONT SIZE=5><P ALIGN="CENTER">The Use of GIS for Integrated Watershed Analysis: </FONT><P ALIGN="CENTER">Integration of Environmental Models with GIS in the Upper Roanoke River Watershed <P ALIGN="CENTER"> <P ALIGN="CENTER">by <P ALIGN="CENTER"> <P ALIGN="CENTER">Robert W. Dietz <P ALIGN="CENTER"> <P ALIGN="CENTER">  <P ALIGN="CENTER">  <P ALIGN="CENTER">  <P ALIGN="CENTER">(ABSTRACT) Practitioners of watershed management are increasingly turning...</p></p></p></p></p></p></p></p></p></p></p></font></title>

Performance based contracting in the transportation arena is a rather recently implemented concept which has a few number of applications in the United States up to date. Nonetheless, the US Department of Transportation has vigorously promoted (by issuing memorandums to be distributed to the...

The dissertation studies traffic dispersion modeling in four parts. In the first part, the dissertation focuses on the Robertson platoon dispersion model which is the most widely used platoon dispersion model. The dissertation demonstrates the importance of the Yu and Van Aerde calibration...

This report presents a top-down methodology to forecast annual international flight operations at sixty-six U.S. airports, whose combined operations accounted for 99.8% of the total international passenger flight operations in National Airspace System (NAS) in 2004. The forecast of international...

The aim of this study is to establish a nation-wide cost-benefit framework for aviation projection appraisal. This framework is built upon Transportation System Analysis Model developed at Virginia Tech Air Transportation System Model (TSAM). Both supply and demand characteristics and their...

Transportation agencies engage in extensive data collection activities in order to support their decision processes at various levels. However, not all the data collected supply transportation officials with useful information for efficient and effective decision-making.This thesis presents...

Abstract State transportation authoritiesâ reliance on traditional financing mechanisms such as gas taxes and federal support has waned of late as these mechanisms have proved insufficient to keep pace with the escalating demand for transportation infrastructure in the United States. As a...

The purpose of this research is to solve several important problems of the AVI system, including the AVI site location problem, travel time forecasting, the study of reliability and accuracy of the forecasted travel time. This thesis serves as a further research toward the modeling of AVI...

With perpetual strains on resources and traffic increasing at a steady rate, transport agencies need to evaluate the road network and make informed decisions to determine which roads have the greatest risk of adverse impacts and therefore identify the roads that have the greatest case for...

This paper provides an overview of the extent to which road agencies nationally and internationally have adopted partnering and alliancing on road projects. The study was based on a telephone/email survey, with responses being received from the eight state and territory Australian road agencies...