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 [14734]
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Masters Theses [19205]
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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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Investigating Induced Pluripotent Stem Cells for Tissue Engineering and Hepatotoxicity Applications
(Virginia Tech, 2019-06-12)Induced pluripotent stem cells (iPSCs) can be differentiated into multiple cell types in the body while maintaining proliferative capabilities. The generation of human iPSC-derived hepatocytes (iPSC-Heps) has resulted in ... -
New Techniques for Time-Reversal-Based Ultra-wideband Microwave Pulse Compression in Reverberant Cavities
(Virginia Tech, 2020-12-02)Generation of high-peak power, microwave ultra-short pulses (USPs) is desirable for ultra-wideband communications and remote sensing. A variety of microwave USP generators exist today, or are described in the literature, ... -
Discovery and dissemination of new knowledge in food science: Analytical methods for quantification of polyphenols and amino acids in fruits and the use of mobile phone-based instructional technology in food science education
(Virginia Tech, 2019-06-11)The discovery and dissemination of new knowledge are essential in food science. To advance our understanding of fruit chemistry, analytical methods were compared and applied. Polyphenols are secondary metabolites in fruits ... -
Characterization and management of major fungal diseases and mycotoxin contamination of grain sorghum in the mid-Atlantic U.S.
(Virginia Tech, 2019-06-11)Industry demand for local sources of grain for animal feed has increased sorghum production in the mid-Atlantic region of the U.S. Sorghum anthracnose (causal agent Colletotrichum sublineola) and the grain mold complex, ... -
The Effects of Out-of-Home Placement on the School Engagement of Maltreated Children
(Virginia Tech, 2019-06-11)Children in the child welfare system face a multitude of challenges following maltreatment. These children frequently go on to report poor outcomes in many facets of their life, including education. It is thought that ... -
Methods for controlling two European Honey bee (Apis mellifera L.) pests: Varroa mites (Varroa destructor, Anderson and Trueman) And Small hive beetles (Aethina tumida)
(Virginia Tech, 2019-06-11)Throughout the last five decades, European Honey bee (Apis mellifera) colonies have been heavily damaged by invading Varroa mites (Varroa destructor), and, more recently, small hive beetles (Aethina tumida). These pests ... -
Task-specific summarization of networks: Optimization and Learning
(Virginia Tech, 2019-06-11)Networks (also known as graphs) are everywhere. People-contact networks, social networks, email communication networks, internet networks (among others) are examples of graphs in our daily life. The increasing size of ... -
Evaluation of the Effects of Mining Related Contaminants on Freshwater Mussels (Bivalvia: Unionidae) in the Powell River of Virginia and Tennessee
(Virginia Tech, 2019-06-10)The Powell River is located in southwestern Virginia and northeastern Tennessee, USA and supports a diverse freshwater mussel assemblage of 29 extant species. Throughout the river major ion and trace element concentrations ... -
An Investigation of Phase Change Material (PCM)-Based Ocean Thermal Energy Harvesting
(Virginia Tech, 2019-06-10)Phase change material (PCM)-based ocean thermal energy harvesting is a relatively new method, which extracts the thermal energy from the temperature gradient in the ocean thermocline. Its basic idea is to utilize the ... -
Three Essays on Price Framing and Price Perceptions
(Virginia Tech, 2019-06-10)This dissertation focuses on contextual frames that influence how consumers perceive prices and how that in turn affects their product evaluations and consumption decisions. This research consists of three essays and ... -
Assessing the relationships between pollinator-friendly plantings and birds, bats and white-tailed deer on farms in the Coastal Plain of Virginia and Maryland
(Virginia Tech, 2020-11-30)Pollinator-friendly wildflower and native grass plantings are increasingly incentivized by state and federal agencies to improve ecosystem services provided by pollinating insects on farmland. However, the potential ecosystem ... -
Monumentality of Serenity and Dynamism
(Virginia Tech, 2020-11-30)Monumentality derives from the eternal need of people to own symbols to reveal their inner life and social conceptions. I want to design a building to represent Modern Monumentality. This project came from the idea of " ... -
Measuring Social Motivation in Autism Spectrum Disorder: Development of the Social Motivation Interview
(Virginia Tech, 2019-06-07)Social motivation in individuals with ASD is currently derived from the observation of overt behaviors and neurological correlates, from which motivational processes are inferred. Motivation, however, is not the same as ... -
Potential and Quantification of Street Sweeping Pollutant Reductions towards addressing TMDL WLAs for MS4 Compliance
(Virginia Tech, 2019-06-07)Municipal separate storm sewer system (MS4) permittees face costly obligations to reduce pollutant loadings needed to achieve waste load allocations (WLAs) and meet total maximum daily loads (TMDLs). Street sweeping is ... -
New Methods of DNA Assembly, Gene Regulation with a Synthetic sRNA, and Cyanobacterium Phenotype Monitoring with Raman Spectroscopy
(Virginia Tech, 2019-06-07)Metabolic engineering has enabled studying microorganisms by the modification of their genetic material and analysis of their metabolism for the isolation of microbial strains capable of producing high yields of high value ... -
A Daily Diary Investigation of the Impact of Flexible Work Arrangements on Physical Activity Among University Staff
(Virginia Tech, 2019-06-07)The goal of this investigation was to examine personal and environmental factors that may influence levels of daily physical activity in a sample of university staff employees who use flexible work arrangements (flextime ... -
Dynamic Fluctuations in Emotion and Space Representation: A Functional Cerebral Systems Approach to Right Hemisphere Dysfunction
(Virginia Tech, 2019-06-07)This study proposed an experimental test of theoretical models related to emotion and space representation in the brain. Previous research has established that emotion is represented, processed, expressed, and regulated ... -
Impact of Mindfulness-Enhanced Pivotal Response Group Treatment on Parenting Stress: A Randomized Controlled Trial
(Virginia Tech, 2019-06-05)One of the core features of Autism Spectrum Disorder (ASD), social communication impairment, presents in a variety of ways, including reduced functional language use and social initiations, which often warrant intensive ... -
Biomechanical Responses of Human Surrogates under Various Frontal Loading Conditions with an Emphasis on Thoracic Response and Injury Tolerance
(Virginia Tech, 2018-06-04)Frontal motor vehicle collisions (MVCs) resulted in 10,813 fatalities and 937,000 injuries in 2014, which is more than any other type of MVC. In order to mitigate the injuries and fatalities resulting from MVCs, new safety ... -
Relationships Between Training Load Metrics and Injury in Collegiate Women's Soccer
(Virginia Tech, 2020-11-25)Injury risk reduction is an ever-evolving topic within an athletic environment. Consequences from an injury include participation time loss, financial, social, and personal costs. Coaching and medical staff strive to reduce ...
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