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 [15287]
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Masters Theses [20121]
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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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Development of Passive Lower Back Exoskeletons
(Virginia Tech, 2020-05-01)The design of two passive back lift assist exoskeletons are presented in this thesis. The first exoskeleton uses carbon fiber as an energy storage medium while the second system utilizes a series system comprised of a gas ... -
Impacts of low-water activity food type on inactivation kinetics and models of foodborne pathogens treated with low-temperature, vacuum-assisted steam processing
(Virginia Tech, 2020-04-29)Low water activity foods (LWAF), specifically nuts and dried fruits, have been generally considered safe because they do not support the growth of foodborne pathogens. However, many pathogens have been noted to survive in ... -
Natural history, taxonomy, and phylogenetics of Appalachian flat-backed millipedes (Diplopoda: Polydesmida)
(Virginia Tech, 2020-04-29)Millipedes (class Diplopoda) are ubiquitous in forests worldwide, with about 12,000 described species and an estimated 30,000 undescribed species. The most species-rich order is the Polydesmida, the flat-backed millipedes, ... -
Factors Influencing Salmonella Survival in Agricultural Soils and Internalization through Solanaceous Crop Roots
(Virginia Tech, 2020-04-28)Solanaceous crops such as peppers and more commonly tomatoes have been linked to Salmonella outbreaks that have occurred in the United States. The source of contamination for some of these outbreaks was traced back to the ... -
Spatial Ecology of a Vulnerable Species: Home Range Dynamics, Resource Use, and Genetic Differentiation of Eastern Spotted Skunks in Central Appalachia
(Virginia Tech, 2020-04-28)The spatial distribution of a species is not random or uniform across all landscapes, nor is it independent of resource availability and risk of predation. A key aspect in the study of wildlife ecology is understanding how ... -
Exploring the Effect of Ankle Braces on Foot Posture
(Virginia Tech, 2020-04-28)Foot posture is an important characteristic that can affect kinematics, plantar loading, and injury risk. Arch height is one common aspect of foot posture, and it is estimated that about 60% of the population has normal ... -
Explainable and Network-based Approaches for Decision-making in Emergency Management
(Virginia Tech, 2021-10-19)Critical Infrastructures (CIs), such as power, transportation, healthcare, etc., refer to systems, facilities, technologies, and networks vital to national security, public health, and socio-economic well-being of people. ... -
The Role of Leadership for Community Building and Community Garden Programs
(Virginia Tech, 2020-04-27)Community gardens play a valuable role in creating places where people can socialize; share knowledge, experiences, and mutual interests; and improve food security. As previous research has shown, effective leadership is ... -
Transformative-based Alternative Education Program: A Study of Teacher and Leadership Perceptions
(Virginia Tech, 2021-10-18)The purpose of study was to identify the perceptions of school leaders regarding the effectiveness of an alternative education transformative day program following the first year of implementation. While some divisions ... -
Framing Crime: An Analysis of News Media Twitter Data
(Virginia Tech, 2020-04-24)With the increased social attention to active shooting events in the United States, news outlets are featuring news briefs through social media platforms like Twitter. Using this method of information sharing, news ... -
Informal Car Share's Contribution to Urban Resilience in Quito, Ecuador
(Virginia Tech, 2020-04-23)Latin American cities are challenged by the effects of population growth and insufficient infrastructure. As a consequent, Informal Car Share (ICS) is increasingly filling the gap as a transportation choice for underserved ... -
Equivariant estimators and a special group structure
(Virginia Polytechnic Institute and State University, 1974)Given a G-invariant family of distributions and under suitable hypotheses concerning G, we characterize the form of G-equivariant estimators. In fact, corresponding to each G-equivariant estimator is an appropriate G-invariant ... -
Paleontology and stratigraphy of the Shady Formation near Austinville, Virginia
(Virginia Polytechnic Institute and State University, 1977)The Shady Formation near Austinville, Virginia, approximately 60 miles (96 km) southwest of Roanoke, includes four members. Northwest of the axis of the Austinville anticline, the Shady Formation is entirely of Early ... -
Characterization of Reward Sensitivity, Positive Affect and Working Memory in Socially Anxious Young Adults
(Virginia Tech, 2021-10-12)Social anxiety disorder (SAD) is a debilitating disorder marked by persistent fear of one or more social or performance situations that is associated with poor daily functioning in various areas of life. Most empirically-supported ... -
Pharmacokinetics and pulmonary distribution of Draxxin® (tulathromycin) in healthy adult horses
(Virginia Tech, 2021-10-13)The objective of this study was to determine the pharmacokinetics and tolerance of tulathromycin (Draxxin®; 2.5 mg/kg once) after intramuscular (IM), subcutaneous (SC), and slow intravenous (IV) administration to six adult ... -
Mungbean [Vigna radiata (L.) Wilczek]: Protein-rich Legume for Improving Soil Fertility and Diversifying Cropping Systems
(Virginia Tech, 2020-04-21)Drought, salinity, and low soil fertility have negative impacts on agricultural productivity, resulting in food scarcity and nutritional insecurity, particularly in Sub-Saharan Africa. Mungbean [Vigna radiata (L.) R. ... -
Interactions of Chitin and Lignin Thin Films with Other Molecules
(Virginia Tech, 2021-10-12)As two of the most abundant natural polymers, chitin and lignin not only play critical roles in fungal and plant cell walls but are also important functional materials and promising feedstocks for a variety of chemicals. ... -
Rethinking the Force Concept Inventory: Developing a Cognitive Diagnostic Assessment to Measure Misconceptions in Newton's Laws
(Virginia Tech, 2021-10-12)Student misconceptions in science are common and may be present even for students who are academically successful. Concept inventories, multiple-choice tests in which the distractors map onto common, previously identified ... -
Presumptive identification of smooth Brucella strain antibodies in canines
(Virginia Tech, 2021-10-11)Brucellosis is a zoonotic disease caused by a Gram-negative coccobacillus. There are four Brucella strains of zoonotic importance in our domestic species, subdivided by their culture phenotypes: Brucella abortus (B. abortus, ... -
Patient Room Design that Integrates the Personalized Ventilation System for Cross-Infection Control
(Virginia Tech, 2021-10-11)Many airborne diseases such as Coronavirus variants are spread from person to person by indoor air movement. This is of particular concern in healthcare environments such as hospitals. There is a significant body of research ...
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