Now showing items 1-10 of 100
Effect of mixing intensity on polymer conditioning of sludges
(Virginia Tech, 1986-07-05)
Conditioning studies were conducted on several water and wastewater sludges using polymers to determine the effect of high-intensity mixing on floc formation and breakup. Mechanisms acting in particle coagulation were also ...
Analysis and design of a triangular cross section truss for a highway bridge
(Virginia Tech, 1983-12-05)
Determination of chloride diffusion constants for concretes of differing water to cement ratios and admixtures
(Virginia Tech, 1988-08-05)
Reinforced concrete exposed to chlorides is subject to rapid deterioration once the concentration of the chloride ion in the concrete reaches a critical level to cause corrosion of the reinforcing steel. The chloride ...
Effects of grid lattice geometry on digital image filtering
(Virginia Tech, 1989-04-05)
The spatial distribution of discrete sample points from an image affect digital image manipulation. The geometries of the grid lattice and edge are described for digital images. Edge detecting digital filters are considered ...
Interactive design of braced excavations
(Virginia Tech, 1985-12-05)
A two-point vehicle classification system
(Virginia Tech, 1988-02-22)
The counting and classification of vehicles is an important part of transportation engineering. In the past twenty years many automated systems have been developed to accomplish that labor-intensive task. Unfortunately ...
A study of the relationship between rapid rail transit and urban development
(Virginia Tech, 1989-04-06)
The thesis presents an opportunity to study relationship between rapid rail transit system and urban development through measuring various changes caused by the rapid rail transit improvement in Washington, D.C., Beijing, ...
Evaluation of Tidewater district's operations improvements program
(Virginia Tech, 1989-12-05)
The increasing congestion on the roads in the United States of America has become a topic of much interest among the transportation planners. There is a limit to which there can be building of new highways. Thus, the ...
Data processing in a small transit company using an automatic passenger counter
(Virginia Tech, 1986-01-05)
<p>This thesis describes the work done in the second stage of the implementation of the Automatic Passenger Counter (APC) system at the Roanoke Valley - Metro Transit Company. This second stage deals with the preparation ...
Evacuation of Special Facilities
(Virginia Tech, 1987-12-07)
In this research, the issue of evacuating people from large public facilities has been studied. The focus has mostly been on the evacuation of hospitals. For the hospital evacuation planner, it is necessary to know how ...