ETDs: Virginia Tech Electronic Theses and Dissertations
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Virginia Tech has been a world leader in electronic theses and dissertation initiatives for more than 20 years. On January 1, 1997, Virginia Tech was the first university to require electronic submission of theses and dissertations (ETDs). Ever since then, Virginia Tech graduate students have been able to prepare, submit, review, and publish their theses and dissertations online and to append digital media such as images, data, audio, and video.
University Libraries staff are currently digitizing thousands of pre-1997 theses and dissertations and loading them into VTechWorks. Most of these theses and dissertations are fully available to the public, but we will, in general, honor requests by the item's author to restrict access to Virginia Tech only. See our process for Requesting that Material be Amended or Removed.
To search all Virginia Tech print and digital theses and dissertations, use the University Libraries ETD resource guide.
Materials that are restricted to Virginia Tech only may be requested via your own university or public library's Interlibrary Loan program or through the VTechWorks request form that appears when you try to access the item. You might also be able to obtain a copy of the work through ProQuest's database of theses and dissertations. If you are on a Virginia Tech campus but are unable to find the pre-1997 thesis or dissertation you are seeking in VTechWorks, you may also be able to order a physical copy from library storage. Please check the library catalog at http://www.lib.vt.edu/ for physical copies.
The guidelines that apply to Virginia Tech's graduate students as ETD authors can be found at http://guides.lib.vt.edu/ETDguide.
Collections in this community
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Doctoral Dissertations [13257]
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Masters Theses [18236]
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Undergraduate Theses [11]
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Virginia Tech ETD Resources [11]
Documentation about creating and formatting Vinginia Tech ETDs.
Recent Submissions
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An Experimentally-Validated V-Belt Model for Axial Force and Efficiency in a Continuously Variable Transmission
(Virginia Tech, 2018-09-19)Rubber V-belt Continuously Variable Transmissions (CVT's) are commonplace in the Baja SAE collegiate design competition, and are also used widely in the power sports industry. These transmissions offer benefits of simplicity ... -
High-Frequency Oriented Design of Gallium-Nitride (GaN) Based High Power Density Converters
(Virginia Tech, 2018-09-19)The wide-bandgap (WBG) devices, like gallium nitride (GaN) and silicon carbide (SiC) devices have proven to be a driving force of the development of the power conversion technology. Thanks to their distinct advantages over ... -
Impedance-Based Stability Analysis in Power Systems with Multiple STATCOMs in Proximity
(Virginia Tech, 2018-09-19)Multiple STATCOM units in proximity have been adopted in power transmission systems in order to obtain better voltage regulation and share burdens. Throughout stability assessment in this dissertation, it is shown, for the ... -
CoListen
(Virginia Tech, 2018-09-19)Humans need to feel connected to one another. With each new technology we create and re-create ways to connect with others we care about. Thanks to the ubiquity of powerful mobile technology in certain parts of the world, ... -
Fatherless Households: Factors Contributing to the Academic Outcomes of High School Male Students
(Virginia Tech, 2017-03-28)(Professional) High school males from fatherless households are less likely to receive the needed support to succeed in school than their peers from two parent households (Astone and McLanahan, 1991). Research indicated ... -
Current-Transformer Based Gate-Drive Power Supply With Reinforced Isolation
(Virginia Tech, 2018-05)In recent years, there is a clear trend toward increasing the demand for electric power in high-power applications. High-power converters are making major impacts on these high-power applications. Recent breakthroughs in ... -
Generalized Consensus for Practical Fault-Tolerance
(Virginia Tech, 2018-09-07)Despite extensive research on Byzantine Fault Tolerant (BFT) systems, overheads associated with such solutions preclude widespread adoption. Past efforts such as the Cross Fault Tolerance (XFT) model address this problem ... -
Estimation of Runway Throughput with Reduced Wake Vortex Separation, Technical Buffer and Runway Occupancy Time Considerations
(Virginia Tech, 2018-09-18)This thesis evaluates the potential recovery of the runway throughput under Wake Turbulence Re-categorization (RECAT) Phase II and Time-based Separation (TBS) with a Runway Occupancy Time (ROT) constraint comparing with ... -
Drive Quality Improvement and Calibration of a Post-Transmission Parallel Hybrid Electric Vehicle
(Virginia Tech, 2018-09-18)The Hybrid Electric Vehicle Team (HEVT) of Virginia Tech is one of 16 university teams participating in EcoCAR 3, the latest competition in the Advanced Vehicle Technology Competitions (AVTC) organized by Argonne National ... -
Effects of Bird Feeder Density on the Behavior and Ecology of a Feeder-Dependent Songbird: Patterns and Implications for Disease Transmission
(Virginia Tech, 2018-09-18)Anthropogenic resource provisioning of wildlife has increasingly been hypothesized to alter pathogen spread. Although bird feeding is the most widespread form of intentional wildlife provisioning, we know relatively little ... -
Reconstructing Signaling Pathways Using Regular-Language Constrained Paths
(Virginia Tech, 2018-09-18)Signaling pathways are widely studied in systems biology. Several databases catalog our knowledge of these pathways, including the proteins and interactions that comprise them. However, high-quality curation of this ... -
Energy Harvesting IC Design for an Electromagnetic Generator Based on the Split Capacitor Approach
(Virginia Tech, 2018-09-18)The proposed energy harvesting system intends to harvest vibrational energy via an electromagnetic generator (EMG). The proposed circuit intends to extract maximum power from the EMG by utilizing the maximum power transfer ... -
Millipede-Inspired Locomotion for Rumen Monitoring through Remotely Operated Vehicle
(Virginia Tech, 2018-09-18)There has been a growing interest in development of nature-inspired miniature mobile robotics, for navigating complex ground scenarios, unknown terrains, and disaster-hit areas. One application is the development of a ... -
Macroergonomics to Understand Factors Impacting Patient Care During Electronic Health Record Downtime
(Virginia Tech, 2018-09-18)Through significant federal investment and incentives, Electronic Health Records have become ubiquitous in modern hospitals. Over the past decade, these computer support systems have provided healthcare operations with new ... -
Data Standardization and Machine Learning Models for Histopathology
(Virginia Tech, 2017-03-27)Machine learning can provide insight and support for a variety of decisions. In some areas of medicine, decision-support models are capable of assisting healthcare practitioners in making accurate diagnoses. In this work ... -
Interplay between Ephaptic and Gap Junctional Coupling in Cardiac Conduction
(Virginia Tech, 2016-03-24)Sudden cardiac death occurs due to aberrations in the multifactorial process that is cardiac conduction. Conduction velocity (CV) and its modulation by several determinants, like cellular excitability, tissue structure and ... -
Finite Element Modeling of Steel Corrosion in Concrete Structures
(Virginia Tech, 2018-09-14)Concrete is a popular construction material for bridges, due to its high durability and energy efficiency. An important concern for concrete bridges is the possible occurrence of chloride- induced corrosion in prestressing ... -
Spatial and Temporal Transitions in the Composition and Transport of Carbon under Variable Flow
(Virginia Tech, 2018-09-14)Recent studies have focused on dissolved organic matter (DOM) cycling throughout river corridors or in reservoirs, but few have explored DOM cycling in commonplace but understudied run-of-river (ROR) reservoir systems. ... -
Scalability Analysis of Synchronous Data-Parallel Artificial Neural Network (ANN) Learners
(Virginia Tech, 2018-09-14)Artificial Neural Networks (ANNs) have been established as one of the most important algorithmic tools in the Machine Learning (ML) toolbox over the past few decades. ANNs' recent rise to widespread acceptance can be ... -
Human Perception of Aural and Visual Disparity in Virtual Environments
(Virginia Tech, 2018-09-13)With the development of technology over the past decade and the former challenges of virtual environments mitigated, the need for further study of human interaction with these environments has grown apparent. The visual ...
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