Now showing items 31-40 of 734
Corrosion detection using metal coatings on fiber optic sensors
(Virginia Polytechnic Institute and State University, 1995)
Fiber optic sensors have been utilized as corrosion sensors by depositing metal coatings to the surface of the sensors. Three types of fiber optic sensors were investigated as candidates for corrosion detection: the extrinsic ...
Recognition of logic blocks in CMOS circuits
(Virginia Polytechnic Institute and State University, 1988)
A Prolog based approach towards the recognition of logic functional blocks in CMOS circuits is described in this thesis. A transistor level description of the circuit is assumed to be available. Predefined gates and logic ...
Propagation modeling for land mobile satellite communications
(Virginia Polytechnic Institute and State University, 1985)
Satellite systems are being planned for two-way communication with mobile vehicles using UHF and L-band frequencies. Of special concern in the system design are the characteristics of propagation in suburban and rural areas ...
The radiation field produced by longitudinal slots in a long circular cylinder
(Virginia Polytechnic Institute, 1963)
no abstract provided by author
Automatic Detection of Elongated Objects in X-Ray Images of Luggage
(Virginia Tech, 1997-09-05)
This thesis presents a part of the research work at Virginia Tech on developing a prototype automatic luggage scanner for explosive detection, and it deals with the automatic detection of elongated objects (detonators) in ...
An analysis of low-earth-orbit-satellite communication systems
(Virginia Polytechnic Institute and State University, 1989)
There is an ever increasing need for low-cost communication systems in the world. One such system, low-earth-orbit satellites, can provide store-and-forward, as opposed to real time, communication for many earth stations. ...
Input impedance of a slot-cylinder antenna
(Virginia Polytechnic Institute, 1965)
In this thesis a mathematical analysis is made of the input impedance to a cylinder antenna with an axial slot. It is excited by a parallel-wire line connected across the center of the slot. This causes standing waves along ...
An iterative technique for shaped-beam synthesis of unequally spaced, nonuniformly excited linear arrays
(Virginia Polytechnic Institute and State University, 1978)
Antennas with radiation patterns conforming to a specified shape have many applications. Further, precise shaping of the main beam is often required. Array antennas are especially suited for shaped beam synthesis. The ...
Networking Requirements and Solutions for a TV WWW Browser
(Virginia Tech, 1997-09-17)
<P> Most people cannot access the World Wide Web (WWW) and other Internet services because access requires a complex and expensive computer. Moreover, the bandwidth offered to the general public is mostly limited by today's ...
Development of Web-Based Educational Modules for Developing VHDL Models of Digital Systems
(Virginia Tech, 1997-08-07)
Hardware description languages (HDLs) such as VHDL have made it possible for circuit and board designs to be done without resorting to paper, allowing computers to manage the design database and automate the translation ...