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 [15813]
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Masters Theses [20939]
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Undergraduate Theses [30]
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Virginia Tech ETD Resources [14]
Documentation about creating and formatting Virginia Tech ETDs
Recent Submissions
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Cost-saving in Continuous Integration: Development, Improvement, and Evaluation of Build Selection Approaches
(Virginia Tech, 2022-05-24)Continuous integration (CI) is a widely used practice in modern software engineering. Unfortunately, it is also an expensive practice — Google and Mozilla estimate their CI systems in millions of dollars. In this dissertation, ... -
Conservation Behavior Outcomes and Drivers of Participation in a Conservation Research Program on Private Lands
(Virginia Tech, 2022-05-24)Private lands encompass over half of the continental United States and serve as critical habitat for the majority of federally threatened and endangered species. Despite the importance of private lands for conservation, ... -
Methods for the spatial modeling and evalution of tree canopy cover
(Virginia Tech, 2022-05-24)Tree canopy cover is an essential measure of forest health and productivity, which is widely studied due to its relevance to many disciplines. For example, declining tree canopy cover can be an indicator of forest health, ... -
Using Self-Organizing Maps to Calculate Chilling Hours as an Indicator of Temperature Shifts During Winter in the Southeastern United States
(Virginia Tech, 2022-05-24)Several warm winter events have occurred across the Southeast in the past decade, including 2 major events in 2017 and 2018 in Georgia and South Carolina. Plants will begin their spring growth sooner than climatology would ... -
Evaluating the Skillfulness of the Hurricane Analysis and Forecast System (HAFS) Forecasts for Tropical Cyclone Precipitation using an Object-Based Methodology
(Virginia Tech, 2022-05-24)Tropical cyclones (TCs) are destructive, natural occurring phenomena that can cause the loss of lives, extensive structural damage, and negative economic impacts. A major hazard associated with these tropical systems is ... -
Exploring the influence of sociopolitical context on environmental education field trip effectiveness for adolescent youth in the United States
(Virginia Tech, 2022-05-24)Environmental education (EE) programs strive to develop an environmentally literate citizenry capable of addressing the world's environmental problems. However, environmental concerns have become increasingly politically ... -
Control Design for Long Endurance Unmanned Underwater Vehicle Systems
(Virginia Tech, 2022-05-24)In this thesis we demonstrate a technique for robust controller design for an autonomous underwater vehicle (AUV) that explicitly handles the trade-off between reference tracking, agility, and energy efficient performance. ... -
Towards an Intelligent Energy Monitoring System for Autonomous Underwater Vehicles
(Virginia Tech, 2022-05-24)In this thesis, we develop an approach to characterizing the uncertainty in energy use toward development of a real-time intelligent energy monitoring system for an autonomous under- water vehicle (AUV). The purpose of the ... -
Enabling New Material and Process Capabilities for Ultraviolet-Assisted Direct Ink Write Additive Manufacturing via Exploration of Material Rheology and Reactivity
(Virginia Tech, 2022-05-24)Ultraviolet-Assisted Direct Ink Write (UV-DIW) is a material extrusion additive manufacturing (AM) technology in which a viscous ink, often at room temperature, is selectively extruded through a translating nozzle to ... -
Constant Lower Bounds on the Cryptographic Security of Quantum Two-Party Computations
(Virginia Tech, 2022-05-24)In this thesis, we generate a lower bound on the security of quantum protocols for secure function evaluation. Central to our proof is the concept of gentle measurements of quantum states, which do not greatly disturb a ... -
Label-Efficient Visual Understanding with Consistency Constraints
(Virginia Tech, 2022-05-24)Modern deep neural networks are proficient at solving various visual recognition and understanding tasks, as long as a sufficiently large labeled dataset is available during the training time. However, the progress of these ... -
Framework for Optimally Constrained Autonomous Driving Systems
(Virginia Tech, 2020-11-30)The development of Automated Driving Systems (ADS) has been ongoing for decades in varying levels of sophistication. Levels of automation are defined by Society of American Engineers (SAE) as 0 through 5, with 0 being full ... -
ASYMMETRIC ENERGY HARVESTING AND HYDRAULICALLY INTERCONNECTED SUSPENSION: MODELING AND VALIDATIONS
(Virginia Tech, 2020-11-30)Traditional vehicle suspension system is equipped with isolated shock absorbers that can only dissipate energy by themselves. Hydraulic interconnected suspension uses hydraulic circuits to connect each shock absorber, so ... -
Studies on the induction of the hepatic microsomal mixed function oxidase system
(Virginia Polytechnic Institute and State University, 1973) -
A valence bond for several perturbations
(Virginia Polytechnic Institute and State University, 1973) -
Investigations of freshwater surface microlayers: comparisons of methods for sampling various microlayer thicknesses with observations on select chemical and microbiological features of microlayers of three aquatic ecosystems relative to the bulk of subsurface water
(Virginia Polytechnic Institute and State University, 1973) -
Measuring technical efficiency in a fuzzy environment
(Virginia Polytechnic Institute and State University, 1996) -
Diet overlap and habitat segregation between redbreast sunfish and age-o smallmouth bass in the North Anna River, Virginia
(Virginia Polytechnic Institute and State University, 1997) -
An optimally adjusted TCUL controller for the projection of underground transmission lines
(Virginia Polytechnic Institute and State University, 1973) -
Fermentation, digestibility and polatability of ensiled broiler litter and corn forage
(Virginia Polytechnic Institute and State University, 1973)
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