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Modeling Dengue Transmission And Vaccination, Abhishek Pandey May 2014

Modeling Dengue Transmission And Vaccination, Abhishek Pandey

All Dissertations

Dengue is one of the most rapidly spreading mosquito-borne viral diseases in the world and inflicts significant health, economic and social burdens on populations. In this dissertation, I studied different aspects of modeling of dengue and vector-borne diseases in general. Among various dengue models that have appeared in literature, some explicitly model the mosquito population, while others model them implicitly. In spite of extensive use of both modeling approaches, little guidance exists for which type of model should be preferred. I developed a Bayesian approach that uses a Markov chain Monte Carlo (MCMC) method to fit disease models to epidemiological …

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Improved Oxidative Stability In Biodiesel Via Commercially-Viable Processing Strategies, Gregory Lepak May 2014

Improved Oxidative Stability In Biodiesel Via Commercially-Viable Processing Strategies, Gregory Lepak

All Theses

Biodiesel made from waste cooking oil (WCO) frequently requires antioxidants to meet oxidation stability specifications set forth in ASTM D6751 or EN 14214. In contrast, unrefined cottonseed oil (CSO), containing tocopherols and high concentrations of gossypol, a toxic polyphenolic antioxidant, is unique for biodiesel processing because it produces biodiesel resulting in higher oxidation stability. During biodiesel production, however, only a portion of these endogenous natural antioxidants are suspected to be retained. Because the economics of biodiesel manufacturing rely upon inexpensive sources of triglycerides, emphasis was placed upon developing improved alternative commercially-viable processing strategies where WCO is the main source of …

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Density Functional Theory Study Of The Thermodynamics Of Catalytic Remediation Of Nitrate In Water, Lizzie Bollmann May 2014

Density Functional Theory Study Of The Thermodynamics Of Catalytic Remediation Of Nitrate In Water, Lizzie Bollmann

All Theses

Over 1 billion people worldwide lack access to safe drinking water and 5,000 people die each day due to drinking contaminated water. With the development of new industries, new substances and chemicals are entering the waters every day, and the current water treatment processes are unable to remove them entirely. For example, agriculture is the world's heaviest consumer of water, and nitrates and nitrites from fertilizers are washed away with the water to rivers and streams. These chemicals can cause problems to humans and to the environment. To humans, they can cause methemoglobinemia, also known as 'blue baby syndrome'. To …

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Lighting And Compositing For Project Hero, Brooke Buckley May 2014

Lighting And Compositing For Project Hero, Brooke Buckley

All Theses

With tragedies such as the shooting at Sandy Hook Elementary on the rise in the last few years, brainstorming ideas that would prevent that type of violence in schools has become necessary. One such scenario involves a teleoperated robot, manned by local police, which would track down and subdue an intruder until police could arrive at the location. This thesis follows the process of creating a computer-generated robot and compositing it seamlessly into a real environment for the production, Project Hero. This project is a short film that shows a scenario in which a robot would be used to subdue …

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Long-Term Multi-Dimensional Interactive Time-Lapse Photography Using Microsoft Kinect, Daniel Mccoy May 2014

Long-Term Multi-Dimensional Interactive Time-Lapse Photography Using Microsoft Kinect, Daniel Mccoy

All Theses

In this thesis, a method is presented for the capture and interactive presentation of long-term multi-dimensional time-lapse photography. Time-lapse capture is commonly used for the observation based study of relatively long term phenomena such as plant growth and weather patterns. In terms of filmic devices, the visual time compression effect is complementary to slow motion and is nearly as prevalent. In this project, commonly available camera and computer equipment is used to capture images autonomously with minimal system supervision. A set of images is established, using long term, short interval continuous capture at a fixed position. Results are presented demonstrating …

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Volumetric Cloud Rendering: An Animation Of Clouds, Zhaoxin Ye May 2014

Volumetric Cloud Rendering: An Animation Of Clouds, Zhaoxin Ye

All Theses

This paper demonstrates a production workflow for a volumetric-rendering-based short animation about clouds. The animation is based on the concept of a giant fish swimming in the sky from Zhuangzi's philosophical story. The algorithm and implementation for the modeling and rendering of clouds are also presented. A renderer was developed that uses the OpenVDB library for data storage, fast retrieving and grid manipulation. A user-friendly pipeline was also developed for cloud modeling and rendering, which used Python and XML for adjusting rendering parameters. The pipeline includes Maya to build the rough cloud model and Houdini to calculate the interior light …

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The Intelligent Driver Model: Analysis And Application To Adaptive Cruise Control, Rachel Malinauskas May 2014

The Intelligent Driver Model: Analysis And Application To Adaptive Cruise Control, Rachel Malinauskas

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There are a large number of models that can be used to describe traffic flow. Although some were initially theoretically derived, there are many that were constructed with utility alone in mind. The Intelligent Driver Model (IDM) is a microscopic model that can be used to examine traffic behavior on an individual level with emphasis on the relation to an ahead vehicle. One application for this model is that it is easily molded to performing the operations for an Adaptive Cruise Control (ACC) system. Although it is clear that the IDM holds a number of convenient properties, like easily interpreted …

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Design Of A Custom Software Application To Monitor And Communicate Cnc Machining Process Information To Aid In Chatter Identification, Valerie Pezzullo May 2014

Design Of A Custom Software Application To Monitor And Communicate Cnc Machining Process Information To Aid In Chatter Identification, Valerie Pezzullo

All Theses

In any manufacturing environment, it is important to be able to monitor the Computer Numerical Control (CNC) machining process so that high quality parts can be produced in the least amount of time in order to be profitable. This involves acquiring the proper parameters needed from the machine's controller, which can prove to be difficult with proprietary machine tools that tend to limit access to the internal data collected by the controller. This closed approach to controller design also means that many technological advances that have recently become prevalent in society are not being adopted in the manufacturing industry, preventing …

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Digital Image Processing For Ultrasonic Therapy And Tendinous Injury, Jacob Hammers May 2014

Digital Image Processing For Ultrasonic Therapy And Tendinous Injury, Jacob Hammers

All Theses

In this master's thesis, several digital image processing techniques are explored for potential in evaluation of Brightness mode (B-mode) ultrasound images. Currently, many processing techniques are utilized during ultrasound visualization in cardiovascular applications, mammography, and three-dimensional ultrasound systems. However, approaches that serve to aid the clinician in diagnostic assessment of tendinous and ligamentous injuries are more limited. Consequently, the methods employed below are aimed at reducing the dependence on clinician judgment alone to assess the healing stage and mechanical properties of tendinous injuries. Initial focus concentrated on the use of entropy in texture analysis to relate a tendon's appearance in …

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Meshpotato: A C++/Python Api For Production Volumetric Rendering, Kevin Coley May 2014

Meshpotato: A C++/Python Api For Production Volumetric Rendering, Kevin Coley

All Theses

MeshPotato is a production volume rendering API written in C++. Its purpose is to simplify the creation of high quality volumetric effects such as fire, smoke, clouds and explosions. MeshPotato has been designed to be extensible and flexible for quick changes. Python bindings have been implemented with this library to allow for tools that are scripted and integrated within popular 3D modeling applications such as Maya and Houdini. The design of MeshPotato is discussed along with its plugin system, volume rendering API and some results from using the tool.

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Improved Mixed-Integer Models Of A Two-Dimensional Cutting Stock Problem, William Lassiter May 2014

Improved Mixed-Integer Models Of A Two-Dimensional Cutting Stock Problem, William Lassiter

All Theses

This paper is concerned with a family of two-dimensional cutting stock problems that seeks to cut rectangular regions from a finite collection of sheets in such a manner that the minimum number of sheets is used. A fixed number of rectangles are to be cut, with each rectangle having a known length and width. All sheets are rectangular, and have the same dimension. We review two known mixed-integer mathematical formulations, and then provide new representations that both economize on the number of discrete variables and tighten the continuous relaxations. A key consideration that arises repeatedly in all models is the …

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White Noise And Newer Media: The Prophetic Impact Of Jack's Avatars, Caleb Milligan May 2014

White Noise And Newer Media: The Prophetic Impact Of Jack's Avatars, Caleb Milligan

All Theses

In this paper, I analyze Don DeLillo's White Noise through a contemporary techno-literate approach that utilizes Internet and game studies to better understand its protagonist, Jack Gladney, and to reevaluate the novel's critical legacy. Jack is not a modernist living in a postmodern world, as critics like Tom LeClair, John Duvall, and Leonard Wilcox have claimed for the many years since the publication of this novel. Lacking the authentic consistency for such a title, he is instead a postmodern human simulacrum sampling different character types to avoid his lack of discernable self. In each role he plays, however, he is …

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An Engineering Approach To Forensic Methods: The Citrate Method For Postmortem Interval Determination, Melissa Dunphy May 2014

An Engineering Approach To Forensic Methods: The Citrate Method For Postmortem Interval Determination, Melissa Dunphy

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The Postmortem Interval (PMI) is the amount of time between the death of an individual and the discovery of the remains. Existing forensic techniques for the determination of the PMI are limited once soft tissue fully decays [31, 32]. A novel technique has recently been developed using the molecule Citrate (C6H8O7) to calculate the Postmortem Interval (PMI) [26]. Currently, this method cannot be practically applied due to the limited understanding of different forensic environments on the biochemistry of postmortem bone. In addition, further understanding of bone citrate measurement methods is needed to determine a practical field measurement approach. This study …

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Clemson University Science Master's Program In Sustainable And Resilient Infrastructure: A Program Evaluation, Elizabeth O'Sell May 2014

Clemson University Science Master's Program In Sustainable And Resilient Infrastructure: A Program Evaluation, Elizabeth O'Sell

All Theses

The Clemson University Science Master's Program (SMP) in Sustainable and Resilient Infrastructure is a program which aims to link engineering, materials, construction, environment, architecture, business, and public policy to produce graduates with unique holistic perspective and expertise to immediately contribute to the workforce in the area of sustainable and resilient infrastructure. A program evaluation of the SMP has been performed to study the effectiveness of the SMP and identify areas where the goals and vision of the SMP are achieved and areas where improvements can be made. This was completed by analysis of trends within survey responses, review of Master's …

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Assessing The Bite Counter As A Weight Loss Tool, Michael Wilson May 2014

Assessing The Bite Counter As A Weight Loss Tool, Michael Wilson

All Theses

Obesity is a growing health concern throughout the world. Health risks associated with obesity such as diabetes and heart disease result in obesity costing us over $170 million annually. Self-monitoring of Energy Intake (EI) is a critical element of a successful weight loss plan; however current methods to monitor EI are cumbersome and prone to under reporting. The primary purpose of the study was to develop and test an experimental diet protocol based on user feedback from the Bite Counter. A secondary purpose was to examine if this protocol would affect meaningful weight loss by device users. Data were collected …

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Unifying Specific Climate Research With A Molar Climate Measure: A Situational Affordances Approach, Alice Brawley May 2014

Unifying Specific Climate Research With A Molar Climate Measure: A Situational Affordances Approach, Alice Brawley

All Theses

Organizational climate - briefly, the shared perceptions of a workplace - was originally studied as a molar concept, but this approach generally lacked focus and thus resulted in unmanageable measures. Organizational climate research has been subdivided into many areas of specific climate research focusing on particular organizational factors or outcomes, such as safety or customer service (Schneider, Ehrhart, & Macey, 2013). While the study of specific climates has been and remains worthwhile, recent literature in the area has called for a return to the molar or global conceptualization of organizational climate (Kuenzi & Schminke, 2009; Schneider et al., 2013). In …

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An Automated Build System For Articulated Characters, James Sledge May 2014

An Automated Build System For Articulated Characters, James Sledge

All Theses

Rigging is the process of designing and implementing the manipulation architecture for an animated three-dimensional character. Rigs that give the animator the most control tend to be the most difficult to set up and maintain. Due to the linear nature of some elements of rigging, the more complicated a rig, the more time-intensive--and therefore more expensive--to achieve a high quality rig. A solution to complex rig iterability is to automate as much of the process as possible. The topic of this thesis is a framework for modular rigging automation, with a focus on quick and efficient rig iteration. A rigger …

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Phenological Relationships Of Nesting Barn Swallows In A Swallow-Fly-Cattle System And Their Potential Role In Suppression Of Pest Flies In A Warming Climate, Claire Stuyck May 2014

Phenological Relationships Of Nesting Barn Swallows In A Swallow-Fly-Cattle System And Their Potential Role In Suppression Of Pest Flies In A Warming Climate, Claire Stuyck

All Theses

Conservation efforts for birds that provide ecosystem services in agricultural systems require management approaches that cross disciplines. This information is communicated through a variety of outlets but rarely in ways that interface effectively with normal management approaches. The disconnect between agriculture and wildlife conservation reduces the likelihood that ecosystem service benefits will be realized. One understudied ecosystem service provided by birds such as barn swallows (Hirundo rustica) is their role in suppression of flies that are pests to livestock. Climate change, however, may differentially affect flies that respond largely to temperature, and swallows that migrate and respond to photoperiod and …

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Effects Of Creosote-Contaminated Sediment Extracts On Mouse Macrophage Physiology And Function, Rayna Silva May 2014

Effects Of Creosote-Contaminated Sediment Extracts On Mouse Macrophage Physiology And Function, Rayna Silva

All Theses

The southern branch of the Elizabeth River, at Portsmouth Virginia is one of the most polluted systems in North America. This harbor estuary system is also home to the Atlantic Wood Superfund site, which is heavily contaminated with creosote from the Atlantic Wood (AW) preservative company that ceased production in the later 1990s. Creosote is a mixture of polyaromatic hydrocarbons (PAHs), metals, and numerous aliphatic hydrocarbons, and well known to be carcinogenic. The toxicity of sediments and pore waters from the AW site has been studied extensively using Fundulus heteroclitus, also known as the mummichog, or Atlantic killifish. Most adult …

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Ultra-Wideband Position Tracking On An Assembly Line, Harikrishnan Ravikrishnan May 2014

Ultra-Wideband Position Tracking On An Assembly Line, Harikrishnan Ravikrishnan

All Theses

This works considers the problem of tracking objects on an assembly line using an ultra-wideband (UWB) positioning system. Assembly line tracking can be accomplished using touch sensors that physically detect when an object reaches a given location. Such tracking requires sensors placed throughout the entire assembly line, and only provides readings at the sensor locations. In contrast, UWB position tracking utilizes a set of sensors surrounding the whole area, enabling continuous position tracking with less infrastructure. Similar tracking can be accomplished using radio frequency identication (RFID) sensing, but this only provides readings when the parts are near RFID readers. The …

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Characterizing The Chronic Toxicity Of Ion Mixtures To Ceriodaphnia Dubia Using Two Experimental Designs, Katherine Johnson May 2014

Characterizing The Chronic Toxicity Of Ion Mixtures To Ceriodaphnia Dubia Using Two Experimental Designs, Katherine Johnson

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Total Dissolved Solids, commonly referred to as TDS, is a measure of all organic and inorganic substances that pass through a 2-um filter and are naturally found in aquatic environments. Anthropogenic activities such as agricultural irrigation, road salt runoff, hydraulic fracturing, and coal-fired power plant effluents can increase TDS concentrations of freshwater ecosystems ultimately increasing salinity. Aquatic organisms actively manage the ion balance between their external and internal environments. Freshwater organisms use energy to pump sodium in from the environment, while losing it through passive diffusion. If the external ion concentration changes significantly, these organisms must allocate more energy towards …

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Assessing The Response Of Small Mammal Functional Guilds To A Simulated Pathogen Attack In A Deciduous Forest Ecosystem, Katie Keck May 2014

Assessing The Response Of Small Mammal Functional Guilds To A Simulated Pathogen Attack In A Deciduous Forest Ecosystem, Katie Keck

All Theses

Oak trees (Quercus species) are a foundation species that influence the population dynamics of other organisms by stabilizing ecosystem processes. Globally, oak-dominated forests have experienced widespread mortality due to the fungal pathogen, Phytophthora ramorum, which causes the disease Sudden Oak Death (SOD). I investigated the impact of a simulated pathogen attack such as SOD on the small mammal assemblage of an oak forest in Cornwall, New York. Specifically, I tested the hypothesis that specialist species are most impacted by the loss of foundation species and that they would decline in abundance because of changes in food and habitat resources. In …

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Efficient Control Of Assets In A Modern Production Pipeline, Timothy Curtis May 2014

Efficient Control Of Assets In A Modern Production Pipeline, Timothy Curtis

All Theses

Managing large collections of assets created in today's CG productions is no easy task. This thesis examines basic production hierarchies and identifies problems that arise without proper workflow and asset control. The possibility of hundreds of assets being created in several workflows each week creates the potential for extraordinary time waste and user error without a system to track and manage the files being produced. It is becoming increasingly necessary to utilize methods during production that enforce naming and storage standards to prevent catastrophic data loss. This thesis presents an implementation of a customized database used to track all of …

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Birding By Ear: A Study Of Recreational Specialization And Soundscape Preference, Zachary D. Miller May 2014

Birding By Ear: A Study Of Recreational Specialization And Soundscape Preference, Zachary D. Miller

All Theses

Soundscapes have become recognized as an important natural resource. The traditional human-made versus natural soundscape comparison currently used in recreational resource management is challenged by borrowing soundscape components (i.e., biophony, anthrophony, and geophony) from soundscape ecology. This study is designed to evaluate the soundscape preference of birders. A three-component model of recreational specialization was used to evaluate how recreationists may differ in their preference for soundscape components. Data from in-person surveys collected at The Audubon Center and Sanctuary at Francis Beidler Forest in Harleyville, South Carolina were used in combination with surveys from online birding list servers to obtain a …

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A Comparative Study: Structural Complexity Metrics Applied Against Function And Assembly Product Graphs In Predicting Market Price And Assembly Time, Sri Ram Mohinder Cherkadu Vasala May 2014

A Comparative Study: Structural Complexity Metrics Applied Against Function And Assembly Product Graphs In Predicting Market Price And Assembly Time, Sri Ram Mohinder Cherkadu Vasala

All Theses

The overarching objective of this research is to investigate the measurement and use of complexity in the prediction of product performance metrics (assembly time and market cost) for two model graph types (assembly models and function structures). This research focusses on analyzing how accurate the prediction of performance metrics are based on these graph types. This research focuses on developing four prediction models: Function Structures to predict Market Price (FS-MP), Assembly Models to predict Assembly Time (AM-AT), Function Structures to predict Assembly Time (FS-AT), and Assembly Models to predict Market Price (AM-MP). These assembly models and function structures are analyzed …

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Determination Of Pore Size Distribution In Capillary-Channeled Polymer (C-Cp) Fiber Stationary Phases By Inverse Size-Exclusion Chromatography (Isec) And The Study Of The Role Of Interstitial Fraction On C-Cp Fibers On Protein Binding Capacity, Zhengxin Wang May 2014

Determination Of Pore Size Distribution In Capillary-Channeled Polymer (C-Cp) Fiber Stationary Phases By Inverse Size-Exclusion Chromatography (Isec) And The Study Of The Role Of Interstitial Fraction On C-Cp Fibers On Protein Binding Capacity, Zhengxin Wang

All Theses

ABSTRACT High performance liquid chromatography (HPLC), first used in the 1960's, is a rapidly evolving analytical technique, widely employed for identification, separation, and purification in biotechnology and pharmaceutical industries. The development of the stationary phases has played an important role in improving this technique. Each stationary phase will have its own disadvantages. Polysaccharide-based stationary phases such as cross-linked dextran cannot tolerate high pressures and linear velocities; silica stationary phases are rigid enough but slow mass transfer in the pores on the surface causes another problem; with the introduction of non-porous and small bead packing materials, the low surface area and …

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Design And Implementation Of A Real-Time Adaptive Oxygen Transfer Rate Estimator, Li Wang May 2014

Design And Implementation Of A Real-Time Adaptive Oxygen Transfer Rate Estimator, Li Wang

All Theses

Oxygen transfer rate (OTR) is the most signicant signal for aerobic bioprocess control, since most microbic metabolic activity relies on oxygen consumption. However, accurate estimation of OTR is challenging due to the difficulty of determining uncertain oxygen transfer parameters and system dynamics. This paper presents an adaptive estimator, which incorporates exhaust gas, stir speed and dissolved oxygen measurements, to predict the real-time OTR. The design of this estimator takes into account the headspace dilution effect, off-gas sensor dynamics and uncertain oxygen transfer parameters. Accurate and real-time OTR signal is derived by combining the low latency property of stir speed and …

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Lighting And Compositing For Qa-Arm-A, Mandy Madigan May 2014

Lighting And Compositing For Qa-Arm-A, Mandy Madigan

All Theses

This thesis focuses on lighting, rendering, and compositing for the short film, QA-ARM-A. The goal of this project was to create a photorealistic short film centered on an interesting story. During this project, aesthetic direction, rendering requirements, and technical challenges arose. Issues of primary importance included: the proper render system to employ, the division of render layers, the selection of render passes, the combination of those layers and passes in compositing, and techniques for lighting each scene. As a result, many of the collaborative techniques and methods can be directly employed in future productions.

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Persistence Of A Vulnerable Semi-Aquatic Turtle In An Intensively-Managed Forest Landscape, Christopher O'Bryan May 2014

Persistence Of A Vulnerable Semi-Aquatic Turtle In An Intensively-Managed Forest Landscape, Christopher O'Bryan

All Theses

Understanding spatial and population ecology of organisms allows land managers to predict how changes in distribution and composition of landscape features influence persistence. Our goal was to investigate body size, sex ratios, survival, individual movements, and habitat selection of a vulnerable freshwater turtle species, the spotted turtle (Clemmys guttata), in an intensively-managed forest landscape in eastern North Carolina, USA. Spotted turtles naturally occur in wetland-dominated landscapes, but this system is heavily-altered, with >222,000 hectares of pine plantations and >10,000 km of ditches managed by Weyerhaeuser Company. During 2012-2013, we captured and individually marked 280 turtles, and used radio-telemetry (n = …

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The Rusterizer: An Art-Directable And Semi-Procedural Tool For Generating Rust Surfaces, Karen Stritzinger May 2014

The Rusterizer: An Art-Directable And Semi-Procedural Tool For Generating Rust Surfaces, Karen Stritzinger

All Theses

The Rusterizer is an art-directable tool designed to facilitate the creation of rust on the surfaces of 3d models. Cellular automata are combined with a procedural shader to create an animated growth effect. A workflow for using the tool is provided. The result is demonstrated with a time-lapse animation of a robot in an alley as it rusts. Future extensions and improvements to the tool are suggested.

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