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 [14699]
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Masters Theses [19182]
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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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A Journey through a Story : Remembering to be a child again with The Little Prince
(Virginia Tech, 2020-10-28)myth (n.) A traditional story which embodies a belief regarding some fact or phenomenon of experience, and in which often the forces of nature and of the soul are personified; a sacred narrative regarding a god, a hero, ... -
Detection of Antineutrinos at the North Anna Nuclear Generating Station
(Virginia Tech, 2020-10-28)Nuclear reactors have played an essential role in developing our current understanding of neutrinos. The precision measurement of these high-flux, pure-flavor and controllable artificial neutrino sources shed lights on a ... -
OPTIMIZING BIKE SHARING SYSTEMS: DYNAMIC PREDICTION USING MACHINE LEARNING AND STATISTICAL TECHNIQUES AND REBALANCING
(Virginia Tech, 2019-05-07)The large increase in on-road vehicles over the years has resulted in cities facing challenges in providing high-quality transportation services. Traffic jams are a clear sign that cities are overwhelmed, and that current ... -
Development of Controlled Ring-Opening Polymerization of O-Carboxyanhydrides
(Virginia Tech, 2020-10-27)The aim of my Ph.D. thesis is to summarize my research on the development of ring-opening polymerization (ROP) of O-carboxyanhydrides (OCAs) to synthesize functionalized, degradable polyesters. Biodegradable polyesters are ... -
The Material Separation Process for Recycling End-of-life Li-ion Batteries
(Virginia Tech, 2020-10-27)End-of-life lithium-ion batteries retired from portable electronics, electric vehicles (EVs), and power grids need to be properly recycled to save rare earth metals and avoid any hazardous threats to the environment. The ... -
Mechanical Redesign and Fabrication of a 12 DOF Orthotic Lower Limb Exoskeleton and 6 Axis Force-Torque Sensor
(Virginia Tech, 2020-10-27)This thesis details several modifications to the mechanical design of the Orthotic Lower Limb Exoskeleton (OLL-E) that improve upon the functionality and manufacturability of parts and their assemblies. The changes made ... -
Investigating the origin of localized plastic deformation in nanoporous gold by in situ electron microscopy and automatic structure quantification
(Virginia Tech, 2019-05-06)Gold gains many useful properties when it is formed into a nanoporous structure, but it also becomes macroscopically brittle due to flow localization and may therefore be unreliable for many applications. The goal of this ... -
Investigating the Valley Fever – Environment Relationship in the Western U.S.
(Virginia Tech, 2019-05-06)Valley fever, or coccidioidomycosis, is a disease caused by the Coccidioides immitis and Coccidioides posadasii fungal species that dwell in the soil but can become airborne and infect a human or mammalian host through ... -
Is the presence of biomolecules evidence for molecular preservation in the fossil record?
(Virginia Tech, 2019-05-06)The molecular components of life (i.e., biomolecules such as DNA, proteins, lipids) have the potential to preserve in animals that have been extinct for millions of years, offering a scale of analysis previously inaccessible ... -
Improving Rural Health Disparities: Understanding and Addressing Intake of Added Sugars and Sugar-Sweetened Beverages among Adults and Adolescents
(Virginia Tech, 2019-05-06)Around 46.2 million Americans living in rural areas are disproportionately burdened by health disparities. Likewise, obesity and obesity-associated diseases (e.g., diabetes, cardiovascular disease) are much higher for rural ... -
Prioritizing Food Retailer Perspectives for Environmental Change in Food Stores to Encourage Healthy Dietary Purchases Among Low-Income Consumers in the United States
(Virginia Tech, 2019-05-06)Supplemental Nutrition Assistance Program (SNAP)-authorized store environments could be improved to favor consumer purchase of healthy products. Engaging with the key intermediaries who can use marketing-mix and ... -
Observation of Reactor Antineutrinos with the CHANDLER Detector
(Virginia Tech, 2020-10-26)Experimental anomalies hint at the possible existence of a sterile neutrino. Several experiments have been searching for the sterile neutrino, but none can claim either its discovery or fully rule it out. To test the sterile ... -
Quantitative Approach and Departure Risk Assessment for Unmanned Aerial Systems
(Virginia Tech, 2020-10-26)The usage of unmanned aerial systems (UAS), also called drones, has grown at an increasing rate, with expectations of the number of unmanned aircraft (UA) to triple between 2019 and 2023 as commercial and government usage ... -
Technology Adoption and Integration at a University in Saudi Arabia: A Descriptive Study
(Virginia Tech, 2020-10-26)Information and communication technology (ICT) is becoming a critical part of operations and innovations in many sectors around the world (Basri, Alandejani, and Almadani, 2018). As such, ICT is commonly integrated in ... -
Development of Neuroconnectivity and Inhibitory Control: Relation to Social Cognition in Late Childhood
(Virginia Tech, 2019-05-03)Social cognition is a set of complex processes that mediate much of human behavior. The development of these skills is related to and interdependent on other cognitive processes, particularly inhibitory control, which ... -
Design of Time-Varying Hybrid Zero Dynamics Controllers for Exponential Stabilization of Agile Quadrupedal Locomotion
(Virginia Tech, 2020-10-23)This thesis explores the development of time-varying virtual constraint controllers that allow stable and agile gaits for full-order hybrid dynamical models of quadrupedal locomotion. Unlike time-invariant nonlinear ... -
Modeling the Thermal Performance of an Intelligent MEMS Pressure Sensor with Self-Calibration Capabilities
(Virginia Tech, 2020-10-23)Recent industry trends toward more complex and interconnected systems have increased the demand for more reliable pressure sensors. One of the best methods to ensure reliability is by regularly calibrating the sensor, ... -
Assessment of the Geological Storage Potential of Carbon Dioxide in the Mid-Atlantic Seaboard: Focus on the Outer Continental Shelf of North Carolina
(Virginia Tech, 2019-05-02)In an effort to mitigate carbon dioxide (CO2) emissions in the atmosphere, the Southeast Offshore Storage Resource Assessment (SOSRA) project has for objective to identify geological targets for CO2 storage in two main ... -
Digital Game-Based Learning in K-12 Classrooms: Studying Effectiveness and Influential Factors in Instruction
(Virginia Tech, 2019-05-02)The adoption of new technologies in K-12 classrooms usually generates claims about their effectiveness, but in many cases, these claims are not carefully studied. Furthermore, conclusions drawn from effectiveness studies ... -
Spectroscopic Studies of Small Molecule Adsorption and Oxidation on TiO2-Supported Coinage Metals and Zr6-based Metal-Organic Frameworks
(Virginia Tech, 2019-05-02)Developing a fundamental understanding of the interactions between catalytic surfaces and adsorbed molecules is imperative to the rational design of new materials for catalytic, sorption and gas separation applications. ...
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