Now showing items 11-20 of 380
Model Updating Using Neural Networks
(Virginia Tech, 1996-04-01)
Accurate models are necessary in critical applications. Key parameters in dynamic systems often change during their life cycle due to repair and replacement of parts or en- vironmental changes. This ...
Application of Bifurcation Theory to Subsynchronous Resonance in Power Systems
(Virginia Tech, 1996-12-16)
A bifurcation analysis is used to investigate the complex dynamics of two heavily loaded single-machine-infinite-busbar power systems modeling the characteristics of the BOARDMAN generator with ...
Investigative Learning in an Undergraduate Biology Laboratory: an Investigation into Reform in Science Education
(Virginia Tech, 1996-06-20)
This study examined an innovative, project-based curriculum in a freshman biology laboratory by focusing on how students developed their conceptual understanding of a biological species. A model for ...
The applicability of Herzberg's two-factor theory to the job satisfaction of Malaysian polytechnic instructors
(Virginia Tech, 1996-08-29)
The purpose of this study were: 1) to determine whether support exists for Herzberg's two factor theory in an educational setting in Malaysia; 2) to determine and describe the job satisfaction of polytechnic instructors ...
Residual Stress Effects on Power Slump and Wafer Breakage in GaAs MESFETs
(Virginia Tech, 1996-06-06)
The objectives of this investigation are to develop a precise, non-destructive single crystal stress measurement technique, develop a model to explain the phenomenon known as 3power slump2, and investigate the role of ...
A Design Methodology for Physical Design for Testability
(Virginia Tech, 1996-07-01)
Physical design for testability (PDFT) is a strategy to design circuits in a way to avoid or reduce realistic physical faults. The goal of this work is to define and establish a speci c methodology ...
Mechanics of Fiber-Controlled Behavior in Polymeric Composite Materials
(Virginia Tech, 1996-05-28)
Modern durability and damage tolerance predictions for composite material systems rely on accurate estimates of the local stress and material states for each of the constituents, as well as the manner in which the constituents ...
Characterization of Organosilicone Surfactants and Their Effects on Sulfonylurea Herbicide Activity
(Virginia Tech, 1996-04-05)
This research focused on the characterization of organosilicone surfactants and their effects on sulfonylurea herbicide activity. The project included efficacy tests, rainfastness studies in the greenhouse, radiotracer ...
A Study of Earth Radiation Budget Radiometric Channel Performance and Data Interpretation Protocols
(Virginia Tech, 1996-08-27)
Two aspects of the study of the Earth radiation budget and the effects of clouds on our climate system are considered in this dissertation: instrumentation and data interpretation. Numerical models have ...
The Minimax control chart for multivariate quality control
(Virginia Tech, 1996)