Now showing items 1-10 of 93
An investigation into the origin, measurement and application of chemiluminescent light emissions from premixed flames
(Virginia Tech, 2000-12-14)
The chemiluminescent species CH* and OH* are studied in premixed methane combustion to investigate the possible application of their light emissions in gas turbine combustion monitoring systems. The interpretation of ...
Integrated urban transportation and land use modeling by application of system dynamics
(Virginia Tech, 1995-01-16)
The spatial allocation of land uses and vehicle route selection within an urban network are both dependent upon travel times between zones in an urban region. These location and accessibility components form the basis of ...
Modeling land suitability for the Tom's Creek Basin, Blacksburg using Geographic Information System
(Virginia Tech, 1996-07-24)
The Role of Local Material Properties in Modeling Fracture Tolerance of the Human Thorax
(Virginia Tech, 2003-09-19)
This dissertation presents the results of dynamic material tests and computational modeling exploring the effects of regional rib mechanical properties on thoracic fracture patterns. Test coupon modeling was used to verify ...
Characterization, Modeling, and Control of Ionic Polymer Transducers
(Virginia Tech, 2002-09-06)
Ionic polymers are a recently discovered class of active materials that exhibit bidirectional electromechanical coupling. They are `soft' transducers that perform best when the mechanical deformation involves bending of ...
Application of Optimization Techniques to the Design of a Boost Power Factor Correction Converter
(Virginia Tech, 2001-07-02)
This thesis analyzes the procedural approach and benefits of applying optimization techniques to the design of a boost power factor correction (PFC) converter with an input electromagnetic interference (EMI) filter at the ...
Characterization, Modeling, and Control of the Nonlinear Actuation Response of Ionic Polymer Transducers
(Virginia Tech, 2005-09-27)
Ionic polymer transducers are a class of electroactive polymer materials that exhibit coupling between the electrical, chemical, and mechanical domains. With the ability for use as both sensors and actuators, these ...
Flood pulse influences on exploited fish populations of the Central Amazon
(Virginia Tech, 2017-01-10)
Seasonally fluctuating water levels, known as flood pulses, influence the population dynamics and catches of fishes from river-floodplains. Although different measures of flood pulses, here called flood pulse variables, ...
Impedance Measurement of Cells; Experiment and Analysis of Passivation Layer
(Virginia Tech, 2009-11-20)
Biological cells like any other material do conduct electricity. Though they come across as insulators, the resistance to the flow of current, i.e. impedance, could be used to characterize the cell itself. In this aspect, ...