Now showing items 31-40 of 45
Dynamic Synthesis/Design and Operation/Control Optimization Approach applied to a Solid Oxide Fuel Cell based Auxiliary Power Unit under Transient Conditions
(Virginia Tech, 2005-02-11)
A typical approach to the synthesis/design optimization of energy systems is to only use steady state operation and high efficiency (or low total life cycle cost) at full load as the basis for the synthesis/design. Transient ...
Bivariate Best First Searches to Process Category Based Queries in a Graph for Trip Planning Applications in Transportation
(Virginia Tech, 2009-02-25)
With the technological advancement in computer science, Geographic Information Science (GIScience), and transportation, more and more complex path finding queries including category based queries are proposed and studied ...
New Multi-Phase Diode Rectifier Average Models for AC and DC Power System Studies
(Virginia Tech, 2005-12-13)
More power semiconductors are applying to the aircraft power system to make the system smaller, lighter and more reliable. Average models provide a good solution to system simulation and can also serve as the basis to ...
High-Intensity Discharge Industrial Lighting Design Strategies for the Minimization of Energy Usage and Life-Cycle Cost
(Virginia Tech, 2008-08-26)
Worldwide, the electrical energy consumed by artificial lighting is second only to the amount consumed by electric machinery. Of the energy usage attributed to lighting in North America, approximately fifteen percent is ...
Optimizing analysis pipelines for improved variant discovery
(Virginia Tech, 2014-04-17)
Experiment Management for the Problem Solving Environment WBCSim
(Virginia Tech, 2009-08-10)
A problem solving environment (PSE) is a computational system that provides a complete and convenient set of high level tools for solving problems from a specific domain. This thesis takes an in-depth look at the ...
Hurdle Technologies Using Essential Oils And High Hydrostatic Pressure To Inactivate E. Coli In Fresh Beef
(Virginia Tech, 2016-12-08)
In this study, potential of high hydrostatic pressure (HHP) and essential oils (EOs) as natural antimicrobials was evaluated to produce E. coli safe and quality beef product. First, the individual and combined effects of ...
Optimal Geometric Trimming of B-spline Surfaces for Aircraft Design
(Virginia Tech, 2005-06-15)
B-spline surfaces have been widely used in aircraft design to represent different types of components in a uniform format. Unlike the visual trimming of B-spline surfaces, which hides unwanted portions in rendering, the ...
Design-Oriented Translators for Automotive Joints
(Virginia Tech, 1998-09-13)
A hierarchical approach is typically followed in design of consumer products. First, a manufacturer sets performance targets for the whole system according to customer surveys and benchmarking of competitors' products. ...
Optimal Evacuation Plans for Network Flows over Time Considering Congestion
(Virginia Tech, 2011-06-09)
This dissertation seeks to advance the modeling of network flows over time for the purposes of improving evacuation planning. The devastation created by Hurricanes Katrina and Rita along the Gulf Coast of the United States ...