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 [14993]
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Masters Theses [19696]
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Undergraduate Theses [29]
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Virginia Tech ETD Resources [14]
Documentation about creating and formatting Virginia Tech ETDs
Recent Submissions
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Investigations into the Form and Design of an Elbow Exoskeleton Using Additive Manufacturing
(Virginia Tech, 2021-05-05)The commercial exoskeletons are often heavy and bulky, thus reducing the weight and simplifying the form factor becomes a critical task. This thesis details the process of designing and making a low-profile, cable-driven ... -
Sex-Specific Head Impact Exposure in Rugby: Measurement Considerations and Relationships to Clinical Outcomes
(Virginia Tech, 2021-05-05)Concussions are diffuse injuries that affect areas of the brain responsible for a person's physical, cognitive, and emotional health. Although concussions were once thought only to present transient symptoms, mounting ... -
Numerical Analysis for Data-Driven Reduced Order Model Closures
(Virginia Tech, 2021-05-05)This dissertation contains work that addresses both theoretical and numerical aspects of reduced order models (ROMs). In an under-resolved regime, the classical Galerkin reduced order model (G-ROM) fails to yield accurate ... -
Routing and Control of Unmanned Aerial Vehicles for Performing Contact-Based Tasks
(Virginia Tech, 2021-05-05)In this dissertation, two main topics are explored, the vehicle routing problem (VRP) and model reference adaptive control (MRAC) for unknown nonlinear systems. The VRP and its extension, the split delivery VRP (SVRP), ... -
Immune Checkpoint Molecule Expression in Canine Lymphoma and Canine Reactive Lymphoid Hyperplasia
(Virginia Tech, 2019-11-12)Background: Although lymphoma is one of the most common malignancies in dogs, remission rates and survival times remain stagnant. Treatment with a multi-agent chemotherapy protocol induces remission for less than one year ... -
Poultry Litter Ash as an Alternative Fertilizer Source for Corn
(Virginia Tech, 2019-11-12)Poultry litter ash (PLA) is a co-product from manure-to-energy systems that originated in response to increased poultry litter (PL) volumes generated in concentrated poultry production regions. Investigating PLA as a crop ... -
Enhancing Freeway Merge Section Operations via Vehicle Connectivity
(Virginia Tech, 2019-11-12)Driving behavior considerably affects the transportation system, especially lane-changing behavior occasionally cause conflicts between drivers and induce shock waves that propagate backward. A freeway merge section is one ... -
Applications of Applied Econometrics in the Food and Health Economic and Agribusiness Topics
(Virginia Tech, 2019-11-12)This dissertation consists of three essays in Applied Econometrics that seek a better understanding of different aspects of risk and risk management tools. The first essay is about mortality risk in Virginia coal regions. ... -
Principal Perceptions on the Impact of Leadership Development Attributed to the Virginia Tech School Leaders Institute Recently Appointed Administrator Program
(Virginia Tech, 2021-05-04)The role of the school principal is second only to classroom instruction in terms of its impact on student achievement. Due to the evolving needs of students, schools, and school districts, the training of new principals ... -
Influence of Fuel Inhomogeneity and Stratification Length Scales on Detonation Wave Propagation in a Rotating Detonation Combustor (RDC)
(Virginia Tech, 2021-05-03)The detonation-based engine has the key advantage of increased thermodynamic efficiency over the traditional constant pressure combustor. These detonation-based engines are also known as Pressure Gain Combustion systems ... -
Non-invasive Method to Measure Energy Flow Rate in a Pipe
(Virginia Tech, 2018-11-08)Current methods for measuring energy flow rate in a pipe use a variety of invasive sensors, including temperature sensors, turbine flow meters, and vortex shedding devices. These systems are costly to buy and install. A ... -
A Qualitative Investigation of Principals' Experiences with and Interventions Provided to Gifted Students who have Dropped Out or are At Risk of Dropping Out
(Virginia Tech, 2021-04-30)This qualitative study investigated principals' experiences with gifted students who have dropped out of school or are at risk of dropping out of school. The research was guided by the following research questions, 1.) ... -
Felted Objects via Robotic Additive Manufacturing
(Virginia Tech, 2021-04-30)In this thesis, we develop a new method for Additive Manufacturing of felt to make three dimensional objects. Felting is a method of intertwining fibers to make a piece of textile. In this work, a 6 DOF UR-5 robotic arm ... -
Perceptions of the Role of the Principal in the Development, Implementation, and Continuation of a Series Reading Program
(Virginia Tech, 2021-04-30)Elementary students continue to read below proficiency levels. Principals play a key role in the reading programs at their school. The purpose of this study was to identify perceptions of selected elementary principals and ... -
Power Architectures and Design for Next Generation Microprocessors
(Virginia Tech, 2019-11-07)With the rapid increase of cloud computing and the high demand for digital content, it is estimated that the power consumption of the IT industry will reach 10 % of the total electric power in the USA by 2020. Multi-core ... -
Exploring the Effects of Language on Angry Drivers' Situation Awareness, Driving Performance, and Subjective Perception
(Virginia Tech, 2021-04-28)Research shows that anger has a negative impact on cognition due to the rumination effect and in the context of driving, anger negatively impacts situation awareness, driving performance, and road safety. In-vehicle agents ... -
Evaluating Campylobacter spp at the human-wildlife interface
(Virginia Tech, 2019-11-05)Campylobacter spp. infections are an increasing global concern responsible for a significant burden of disease every year. Wildlife and domestic animals are considered important reservoirs, but little is known about ... -
The Biomechanics of Tracheal Compression in the Darkling Beetle, Zophobas morio
(Virginia Tech, 2019-11-05)In this dissertation, we examine mechanics of rhythmic tracheal compression (RTC) in the darkling beetle, Zophobas morio. In Chapter 2, we studied the relationship between hemolymph pressure and tracheal collapse to test ... -
Machine Learning and Field Inversion approaches to Data-Driven Turbulence Modeling
(Virginia Tech, 2021-04-27)There still is a practical need for improved closure models for the Reynolds-averaged Navier-Stokes (RANS) equations. This dissertation explores two different approaches for using experimental data to provide improved ... -
Rapid Prediction of Tsunamis and Storm Surges Using Machine Learning
(Virginia Tech, 2021-04-27)Tsunami and storm surge are two of the main destructive and costly natural hazards faced by coastal communities around the world. To enhance coastal resilience and to develop effective risk management strategies, accurate ...
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