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 [13430]
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Masters Theses [18358]
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Undergraduate Theses [12]
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Virginia Tech ETD Resources [11]
Documentation about creating and formatting Vinginia Tech ETDs.
Recent Submissions
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Quality Control Tools for Cyber-Physical Security of Production Systems
(Virginia Tech, 2019-01-15)With recent advancements in computer and network technologies, cyber-physical systems have become more susceptible to cyber-attacks; and production systems are no exception. Unlike traditional Information Technology (IT) ... -
Ecosystem Transformation Across a Changing Social Landscape: Landowner Perceptions and Responses to Woody Plant Encroachment
(Virginia Tech, 2019-01-15)The conversion of grasslands to woodlands is an ecosystem transformation that threatens grassland biodiversity, the provision of important ecosystem services, and the sustainability of rural livelihoods. A global phenomenon, ... -
Influence of Curing Temperature on Strength of Cement-treated Soil and Investigation of Optimum Mix Design for the Wet Method of Deep Mixing
(Virginia Tech, 2019-01-15)The Deep Mixing Method (DMM) is a widely used, in-situ ground improvement technique that modifies and improves the engineering properties of soil by blending the soil with a cementitious binder. Laboratory specimens were ... -
Frequency Locking Techniques Based on Envelope Detection for Injection-Locked Signal Sources
(Virginia Tech, 2017-07-21)Signal generation at high frequency has become increasingly important in numerous wireline and wireless applications. In many gigahertz and millimeter-wave frequency ranges, conventional frequency generation techniques ... -
Effect of Soil Type, Composting, and Antibiotic Use on Fate of Antibiotic Resistance Genes and Microbial Community Composition in Dairy and Beef Manure Applied Soils
(Virginia Tech, 2017-07-20)Manure is a commonly used soil fertilizer, but there are concerns that this practice could affect the spread of antibiotic resistance genes (ARGs) from farm to fork. A microcosm-scale study evaluated the effect of prior ... -
Discontinuities, Balance Laws, and Material Momentum
(Virginia Tech, 2019-01-10)This dissertation presents an analytical study of a class of problems involving discontinuities, also referred to as shocks, propagating through one dimensional flexible objects such as strings and rods. The study entails ... -
Investigation of the Effect of Corrugated Boxes on the Distribution of Compression Stresses on the Top Surface of Wooden Pallets.
(Virginia Tech, 2019-01-10)Pallets are the foundation of unit loads and supply chains. They provide a way to store and transport products in an efficient manner. The load capacity of pallets greatly depends on the type of packages carried by the ... -
Structure-Activity Relationship Studies of Sphingosine Kinase Inhibitors and Mitochondrial Uncouplers
(Virginia Tech, 2017-07-19)Sphingosine 1-phosphate (S1P) is a cellular signaling molecule that has been implicated in a variety of diseases including cancer, fibrosis, Alzheimer's, and sickle cell disease. It is formed from the phosphorylation of ... -
Smart Environment Based On Real-Time Human Position Tracking For Remote Presence And Collaboration
(Virginia Tech, 2017-07-19)Real-time, virtual and mixed reality systems have diverse uses for real-world data visualization, representation, and remote collaboration in distant learning settings, especially in universities. Design of such systems ... -
Methods for Analysis of Prokaryotic Genome Architecture
(Virginia Tech, 2017-07-19)Research in comparative microbial genomics has largely been organized around the concept of reference genomes. Reference genomes provide a useful comparative touchstone for closely related organisms. However, they do not ... -
Development and Validation of a Finite Element Dummy Lower Limb Model for Under-body blast Applications
(Virginia Tech, 2017-07-18)An under-body blast (UBB) refers to the use of a roadside explosive device to target a vehicle and its occupants. During Operation Iraqi Freedom, improvised explosive devices (IEDs) accounted for an estimated 63% of US ... -
An Assessment of Floating Treatment Wetlands for Reducing Nutrient Loads from Agricultural Runoff in Coastal Virginia
(Virginia Tech, 2017-07-18)Floating treatment wetlands (FTWs) are an innovative best management practice that can enhance the performance of traditional retention ponds by increasing removal of the nutrients nitrogen (N) and phosphorous (P). FTWs ... -
Ideological Foundations of Jihadist Organizations: Hizbullah, al-Qaeda, and IS.
(Virginia Tech, 2017-07-18)This thesis explores the ideological foundations of three jihadist organizations, Hizbullah, al-Qaeda, and Islamic State (IS). All three are categorized as international terrorist organizations but their goals differ. ... -
An Approach to Mitigate Electric Vehicle Penetration Challenges through Demand Response, Solar Photovoltaics and Energy Storage Applications in Commercial Buildings
(Virginia Tech, 2017-07-18)Electric Vehicles (EVs) are active loads as they increase the demand for electricity and introduce several challenges to electrical distribution feeders during charging. Demand Response (DR) or performing load control in ... -
In Vitro Synthetic Biology Platform and Protein Engineering for Biorefinery
(Virginia Tech, 2017-07-17)In order to decrease our dependence on non-renewable petrochemical resources, it is urgently required to establish sustainable biomass-based biorefineries. Replacing fossil fuels with renewable biomass as a raw feedstock ... -
Characterization of Deoxycholate-Responsive Genes Utilized by Brucella abortus 2308 During Oral Infection
(Virginia Tech, 2017-07-17)Brucellosis is a chronic, recurring disease caused by the bacterium Brucella abortus, along with other species of the genus Brucella, and is one of the most common bacterial zoonosis worldwide. The bacteria preferentially ... -
Scleraxis-mediated regulation of tendon and ligament cell mechanobiology
(Virginia Tech, 2018-06-12)Tendon and ligament injuries are common orthopedic problems that have an enormous impact on the quality of life of affected patients. Despite the frequency at which these injuries occur, current treatments are unable to ... -
Phase I Clinical Trial of Recombinant Oncolytic Newcastle Disease Virus for Intracranial Meningioma
(Virginia Tech, 2017-07-14)Meningioma is one of the most commonly diagnosed intracranial tumors in dogs and humans. Treatment failures resulting in local recurrence and death remain common in tumors of high grade, prompting a need for additional ... -
Perceptions of Leaders: The Role of Leader Prototypes and Intervention to Improve Judgments of Female Leaders.
(Virginia Tech, 2017-07-14)Leader prototypes are our expectations for attributes a leader should possess, and these prototypes guide our perceptions and judgments of others with regard to leadership. This dissertation uses a connectionist perspective ... -
Considerations for Contemporary Design and Land Use Within Existing Historical Context
(Virginia Tech, 2017-07-14)The inevitable changes to the built environment over time presents the question of what contemporary design is appropriate for existing historical context. This is inherently a wicked problem that is becoming increasingly ...
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