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.
Collections in this community
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Doctoral Dissertations [13096]
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Masters Theses [17942]
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Virginia Tech ETD Resources [11]
Documentation about creating and formatting Vinginia Tech ETDs.
Recent Submissions
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Surface Based Decoding of Fusiform Face Area Reveals Relationship Between SNR and Accuracy in Support Vector Regression
(Virginia Tech, 2018-05-24)The objective of this study was to expand on a method previously established in the lab for predicting subcortical structures using functional magnetic resonance imaging (fMRI) data restricted to the cortical surface. Our ... -
Total Surface Area in Indoor Environments
(Virginia Tech, 2018-05-23)Certain processes in indoor air, such as deposition, partitioning, and heterogeneous reactions, involve interactions with surfaces. To accurately describe the surface-area-to-volume ratio in a room, we have characterized ... -
Investigation of Concrete Mixtures to Reduce Differential Shrinkage Cracking in Inverted T Beam System
(Virginia Tech, 2018-05-23)The inverted T-beam system provides an accelerated bridge construction alternative. The system consists of adjacent precast inverted T-beams finished with a cast-in-place concrete topping. The system offers enhanced ... -
Receiver-Assigned CDMA in Wireless Sensor Networks
(Virginia Tech, 2018-05-23)A new class of Wireless Sensor Networks (WSNs) is emerging within the Internet of Things (IoT) that features extremely high node density, low data rates per node, and high network dependability. Applications such as ... -
Safety of Flight Prediction for Small Unmanned Aerial Vehicles Using Dynamic Bayesian Networks
(Virginia Tech, 2018-05-23)This thesis compares three variations of the Bayesian network as an aid for decision-making using uncertain information. After reviewing the basic theory underlying probabilistic graphical models and Bayesian estimation, ... -
Modeling and Analysis of a Cantilever Beam Tip Mass System
(Virginia Tech, 2018-05-22)We model the nonlinear dynamics of a cantilever beam with tip mass system subjected to different excitation and exploit the nonlinear behavior to perform sensitivity analysis and propose a parameter identification scheme ... -
Multi-Fidelity Structural Modeling For Set Based Design of Advanced Marine Vehicles
(Virginia Tech, 2018-05-22)This thesis demonstrates that a parametrically-modifiable Advanced Marine Vehicle Structural (AMVS) module (that can be integrated into a larger framework of marine vehicle analysis modules) enables stakeholders, as a ... -
Secure Intermittent Computing: Precomputation and Implementation
(Virginia Tech, 2018-05-22)This thesis explores the security of intermittent devices, embedded systems designed to retain their state across periods of power loss, for cases both when the device has an excess of available energy and when power loss ... -
Frequent Inventory of Network Devices for Incident Response: A Data-driven Approach to Cybersecurity and Network Operations
(Virginia Tech, 2018-05-22)Challenges exist in higher education networks with host inventory and identification. Any student, staff, faculty, or dedicated IT administrator can be the primary responsible personnel for devices on the network. Confounding ... -
Design and Optimization of a Self-powered Thermoelectric Car Seat Cooler
(Virginia Tech, 2018-05-22)It is well known that the seats in a parked vehicle become very hot and uncomfortable on warm days. A new self-powered thermoelectric car seat cooler is presented to solve this problem. This study details the design and ... -
Potential for City Parks to Reduce Exposure to Hazardous Air Pollutants
(Virginia Tech, 2018-05-21)Benzene, toluene, ethylbenzene, and xylenes (BTEX) are hazardous air pollutants commonly found in outdoor air. Several studies have explored the potential of vegetation to mitigate BTEX in outdoor air, but they are limited ... -
EMI Noise Reduction Techniques for High Frequency Power Converters
(Virginia Tech, 2018-05-21)Switch mode power supplies are widely used in different applications. High efficiency and high power density are two driving forces for power supply systems. However, high dv/dt and di/dt in switch mode power supplies will ... -
Ancillary Scientific Instrument Attachment (ASIA): A Distributed Hitchhiker Payload Carrier
(Virginia Tech, 2018-05-18)As more spacecraft reach more locations in the solar system, and with increasing residual capability of those spacecraft, an opportunity exists to improve scientific return at low cost to the satellite operator and minimal ... -
Innovating the Mind: Three Essays on Technology, Society, and Consumer Neuroscience
(Virginia Tech, 2018-05-18)This dissertation examines the emerging practice of consumer neuroscience and neuromarketing, combined called CNNM. CNNM utilizes tools and technologies to measure brain activity and human behavior coupled with scientific ... -
Preschool and the Literacy Achievement Gap in one Rural School Division in Virginia
(Virginia Tech, 2018-05-18)As the number of public school students identified as living in poverty increases, so does the number of children entering kindergarten with inadequate pre-literacy skills. This lack of preparation creates a gap in literacy ... -
Seeing the Forest for the Trees: New approaches to Characterizing and Forecasting Cascades
(Virginia Tech, 2018-05-18)Cascades are a popular construct to observe and study information propagation (or diffusion) in social media such as Twitter and are defined using notions of influence, activity, or discourse commonality (e.g., hashtags). ... -
EEG-Based Control of Working Memory Maintenance Using Closed-Loop Binaural Stimulation
(Virginia Tech, 2018-05-17)The brain is a highly complex network of nonlinear systems with internal dynamic states that are not easily quantified. As a result, it is essential to understand the properties of the connectivity network linking disparate ... -
A Novel Auxiliary Resonant Snubber Inverter Using Wide Bandgap Devices
(Virginia Tech, 2018-05-16)In the application of power inverters, power density has become a key design specification where it has stringent requirements on system size and weight. Achieving high power density need to combine lasted wide bandgap ... -
Design of High-Performance, Dual-Motor Liquid-Cooled, Linear Series Elastic Actuators for a Self-Balancing Exoskeleton
(Virginia Tech, 2018-05-16)As a valuable asset in human augmentation and medical rehabilitation, exoskeletons have become a major area for research and development. They have shown themselves to be effective tools for training and rehabilitation of ... -
The Effect of Lane Departure Warning Systems on Cross-Centerline Crashes
(Virginia Tech, 2018-05-16)Cross-centerline crashes occur rarely in the United States but are especially severe. This type of crash is characterized by one vehicle departing over a centerline and encountering a vehicle traveling in the opposite ...
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