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.
New! - Help video: Searching for Electronic Theses and Dissertations in VTechWorks
Collections in this community
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Doctoral Dissertations [14481]
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Masters Theses [19583]
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Undergraduate Theses [27]
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Virginia Tech ETD Resources [13]
Documentation about creating and formatting Virginia Tech ETDs
Recent Submissions
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Effects of Echolocation Calls on the Interactions of Bat Pairs using Transfer Entropy Analysis
(Virginia Tech, 2020-06-02)Many animal species, including many species of bats, exhibit collective behavior where groups of individuals coordinate their motion. Most bats are unique among these animals in that they use the active sensing mechanism ... -
Degenerate Near-planar Road Surface 3D Reconstruction and Automatic Defects Detection
(Virginia Tech, 2020-06-02)This dissertation presents an approach to reconstruct degenerate near-planar road surface in three-dimensional (3D) while automatically detect road defects. Three techniques are developed in this dissertation to establish ... -
Narrative Generation to Support Causal Exploration of Directed Graphs
(Virginia Tech, 2020-06-02)Causal graphs are a useful notation to represent the interplay between the actors as well as the polarity and strength of the relationship that they share. They are used extensively in educational, professional, and ... -
Computing Exact Bottleneck Distance on Random Point Sets
(Virginia Tech, 2020-06-02)Given a complete bipartite graph on two sets of points containing n points each, in a bottleneck matching problem, we want to find an one-to-one correspondence, also called a matching, that minimizes the length of its ... -
An Assessment of the CFD Effectiveness for Simulating Wing Propeller Aerodynamics
(Virginia Tech, 2020-06-02)Today, we see a renewed interest in aircraft with multiple propellers. To support conceptual design of these vehicles, one of the major needs is a fast and accurate method for estimating wing aerodynamic characteristics ... -
Control-Oriented Thermal Model for a Hybrid Vehicle Battery
(Virginia Tech, 2020-06-01)In a bid to reduce vehicular emissions, automobile manufacturers are moving towards elec- tric and hybrid vehicles. Most hybrid vehicles use Lithium-ion batteries as energy storage systems. Lithium-ion batteries have a ... -
Models and Techniques for Green High-Performance Computing
(Virginia Tech, 2020-06-01)High-performance computing (HPC) systems have become power limited. For instance, the U.S. Department of Energy set a power envelope of 20MW in 2008 for the first exascale supercomputer now expected to arrive in 2021--22. ... -
Modified Kernel Principal Component Analysis and Autoencoder Approaches to Unsupervised Anomaly Detection
(Virginia Tech, 2020-06-01)Unsupervised anomaly detection is the task of identifying examples that differ from the normal or expected pattern without the use of labeled training data. Our research addresses shortcomings in two existing anomaly ... -
Aqueous humor concentration and prostaglandin E2 suppression efficacy of topically applied ophthalmic ketorolac 0.5% and diclofenac 0.1% solutions in dogs with cataract
(Virginia Tech, 2020-06-01)Background: Nonsteroidal anti-inflammatory drugs (NSAIDs) are widely used for their analgesic, anti-pyretic and anti-inflammatory properties in both human and veterinary patients. Topical ophthalmic NSAIDs are commonly ... -
Sensing Atmospheric Winds from Quadrotor Motion
(Virginia Tech, 2020-06-01)Wind observations that are critical for understanding meteorological processes occurring inside of the Earth's atmospheric boundary layer (ABL) are sparse due to limitations of conventional atmospheric sensors. In this ... -
Maternal Residential Proximity to Central Appalachian Surface Mining and Adverse Birth Outcomes
(Virginia Tech, 2020)Maternal residency in Central Appalachian coalfields has been associated with low birth weight at the county-level. To refine the relationship between proximity and adverse birth outcomes, this study employs finer spatial ... -
Revealing Molecular Adversaries of Human Health Using Advanced Imaging Technology
(Virginia Tech, 2018-12-07)Single particle electron microscopy (EM) allows us to examine the molecular world and gain insights into protein structures implicated in human disease. Visualizing the 3D architecture of the macromolecules can inform drug ... -
Mobile Devices for Facilitating Group Fitness and Visualization of Fitness Data
(Virginia Tech, 2020-05-29)Lack of physical activity is a major problem contributing to diseases and poor health. Nowadays, mobile fitness apps serve in important roles in encouraging and facilitating people to do more physical exercise. Many apps ... -
Can Beef Be Bee-Friendly? Using Native Warm-Season Grasses and Wildflowers in Pastures to Conserve Bees
(Virginia Tech, 2020-05-29)Over the past several decades, native and managed bee populations have decreased in the United States and worldwide. Although bee decline is attributable to several factors, habitat loss is the primary driver. Simultaneously, ... -
Learning to handle occlusion for motion analysis and view synthesis
(Virginia Tech, 2020-05-29)The ability to understand occlusion and disocclusion is critical in analyzing motion and forecasting changes. For example, when we see a car gradually blocks our view of a human figure, we know that either the car or the ... -
Handling Invalid Pixels in Convolutional Neural Networks
(Virginia Tech, 2020-05-29)Most neural networks use a normal convolutional layer that assumes that all input pixels are valid pixels. However, pixels added to the input through padding result in adding extra information that was not initially present. ... -
A Separator-Based Framework for Graph Matching Problems
(Virginia Tech, 2020-05-29)Given a graph, a matching is a set of vertex-disjoint edges. Graph matchings have been well studied, since they play a fundamental role in algorithmic theory as well as motivate many practical applications. Of particular ... -
Exploring Accumulated Gradient-Based Quantization and Compression for Deep Neural Networks
(Virginia Tech, 2020-05-29)The growing complexity of neural networks makes their deployment on resource-constrained embedded or mobile devices challenging. With millions of weights and biases, modern deep neural networks can be computationally ... -
Ultra-wideband Radar Detection of Breathing Rate: A Comparative Evaluation
(Virginia Tech, 2020-05-28)This work explores the use of a commodity ultra-wideband (UWB) radar based device to detect breathing rate for health monitoring applications. Health monitoring devices observe physiological signals to detect medical ... -
Parsimonious, Risk-Aware, and Resilient Multi-Robot Coordination
(Virginia Tech, 2020-05-28)In this dissertation, we study multi-robot coordination in the context of multi-target tracking. Specifically, we are interested in the coordination achieved by means of submodular function optimization. Submodularity ...
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