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Adaptation To Base Latency In A Head-Mounted Display Using A Performance Task To Facilitate Adaptation, Amelia Kinsella May 2018

Adaptation To Base Latency In A Head-Mounted Display Using A Performance Task To Facilitate Adaptation, Amelia Kinsella

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Head-tracked head-mounted displays (HMDs) have innate base latency, which has been associated with simulator sickness in users. The purpose of this study was to investigate whether users could adapt to base latency in HMDs shown by a reduction in simulator sickness symptoms. Additionally, this study aimed to investigate whether performing a point and shoot task while wearing an HMD with base latency would facilitate faster and more complete adaptation compared to performing a passive object location task. Forty participants were recruited for a 2 (condition) x 3 (experimental session) mixed ANOVA experiment. Participants completed three experimental sessions separated by 48 …

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Cultivating Head Start Children's Approaches To Learning By Promoting In-Home Play: A Reason To Squeeze In Some Play, Andrea Miller Emerson May 2018

Cultivating Head Start Children's Approaches To Learning By Promoting In-Home Play: A Reason To Squeeze In Some Play, Andrea Miller Emerson

All Dissertations

This dissertation study addresses the need for innovative home-based interventions supporting parent-child play through feasible, culturally responsive, and engaging interventions for families in poverty with preschool aged children. This study utilized an embedded mixed methods design to understand the family feasibility and influence of the Play Pack Intervention. The Play Pack intervention aimed to support the in-home parent-child play of Head Start families in the Upstate of South Carolina and develop assertions that further the understanding and application of the present study’s intervention. In this embedded mixed methods study, the Project Play Pack intervention was implemented in which delivery of …

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Detection And Characterization Of The Newly Described Species Botrytis Fragariae Causing Gray Mold On Strawberries In The United States, Madeline Elizabeth Dowling May 2018

Detection And Characterization Of The Newly Described Species Botrytis Fragariae Causing Gray Mold On Strawberries In The United States, Madeline Elizabeth Dowling

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Gray mold is one of the most devastating diseases infecting strawberries worldwide. Though Botrytis cinerea is the most common causal agent of this disease, five other species are also currently known to cause gray mold on strawberry: Botrytis pseudocinerea, Botrytis caroliniana, Amphobotrys ricini, Botrytis mali, and Botrytis fragariae. This work focuses on the newly described species B. fragariae in the Mid-Atlantic United States: its discovery, distribution, and fungicide resistance patterns. B. fragariae was originally detected in a study of Botrytis species infecting German strawberry fields. It was later detected in the United States through research on the fungicide polyoxin D. …

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Evaluation Of Animal Manure-Based Compost As An Environmental Source Of Clostridium Difficile, Muthu Dharmasena May 2018

Evaluation Of Animal Manure-Based Compost As An Environmental Source Of Clostridium Difficile, Muthu Dharmasena

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The number of Clostridium difficile infection (CDI) cases associated with healthcare and community is increasing. Increased isolation of this pathogen from environmental samples of soil, water, livestock animals and their feces, and produce suggests its dissemination in the environment. Identification, molecular characterization, and revealing the relationship of those isolates with human pathogenicity would be very helpful in understanding the epidemiology of CDI. Livestock manure is a rich source of nutrients for the growth of many crops, and composted manure is widely used as a fertilizer in organic farming. Microbial activities increase the temperature of composting materials, providing sufficient heat to …

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The Dynamics Of Water Movement In Porous Media In Relation To Golf Courses And Sports Fields, Philip James Brown May 2018

The Dynamics Of Water Movement In Porous Media In Relation To Golf Courses And Sports Fields, Philip James Brown

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Soil physical characteristics of golf courses, greens, and fairways, include many factors determining play quality. The United States Golf Association (USGA) has developed extensive guidelines that address many course issues, but various concerns remain, drainage often being the main problem. Sand capping is often suggested as a solution for problem drainage areas on fairways. This work addresses the question of how thick a sand cap must be. Several methods have been proposed to determine an adequate depth with nearly all these methods using some form of a soil moisture retention curve (SMRC) and its air entry point. SMRCs were run …

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Affective Gaming: At The Intersection Of Rhetoric, Affect, And Video Games, Joshua A. Wood May 2018

Affective Gaming: At The Intersection Of Rhetoric, Affect, And Video Games, Joshua A. Wood

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Affective Gaming is an intervention in the field of game studies, designed to address the lack of racial diversity in games. I examine the role that emotion plays in games by melding game studies and rhetorical theory with affect theory and critical identity studies. I build a theory of gaming that is attuned to the way games provoke emotion in players in order to bring a new understanding of identity to game studies. I then turn towards a theory of game design that uses affect toward a rhetorical end, and finally turn this toward games in the classroom. I also …

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Glucose Sensing In Trypanosoma Brucei, Yijian Qiu May 2018

Glucose Sensing In Trypanosoma Brucei, Yijian Qiu

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Trypanosoma brucei is the protozoan parasite that causes human African trypanosomiasis (HAT, also known as sleeping sickness) and nagana disease in livestock. During its life cycle, trypanosomes occupy niches with very different nutrient contents and immune features. They use glucose solely for ATP production in the mammalian bloodstream while switching to amino acid metabolism in the midgut of the tsetse fly vector. A fast and accurate coordination of gene expression with environment alteration is critical for the successful parasitization of the two hosts. My study focuses on the signaling role of glucose in the development and adaptation of T. brucei. …

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Preparation And Studies Of Carbon Dots, Fan Yang May 2018

Preparation And Studies Of Carbon Dots, Fan Yang

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Carbon dots, a new class of benign fluorescent nanomaterials, have been widely studied over the past ten years, as reflected by the recent exponential growth of publications. Such properties as their optical performance, physicochemical and photochemical stability, and aqueous solubility enable them to serve as bright optical probes in a variety of imaging and sensing applications. This dissertation explores the essence of carbon dots, systemically comparing them to graphene quantum dots, thus providing a reexamination of the former. It provides an enhanced understanding of carbon dots from a structural and mechanistic perspective based on the results from their functionalization and …

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Water-Electricity Nexus: Assessing Impacts Of Habitat Loss On Freshwater Mussel Assemblages In The Savannah Basin, South Carolina, Snehal Subhash Mhatre May 2018

Water-Electricity Nexus: Assessing Impacts Of Habitat Loss On Freshwater Mussel Assemblages In The Savannah Basin, South Carolina, Snehal Subhash Mhatre

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The environmental effects of energy production are well known, yet its exact impacts on freshwater resources are often difficult to recognize and measure. Freshwater mussels are extremely imperiled organisms which act as sentinels of freshwater streams and are greatly understudied in context of their drastic decline caused in part due to large water demands by the energy sector. I sought to estimate historic, current and forecasted water use by electricity generation at national, regional and local- scale. To relate the impacts of water-use by electricity generation on freshwater mussels, I conducted occupancy surveys for eight freshwater mussel species in Savannah …

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Study On Optical Properties Of Carbon Dots And Their Composites, Yamin Liu May 2018

Study On Optical Properties Of Carbon Dots And Their Composites, Yamin Liu

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Carbon dots, generally defined as carbon nanoparticles functionalized with organic molecules or polymeric species, have been the subject of much research since their initial report in 2006. The intrinsic properties of carbon dots, include bright fluorescence, low cytotoxicity, chemical inertness, photostability have led to various resulting applications leveraging them. The early research focused on synthetic approaches to produce carbon dots and their optical properties, followed by efforts exploring the mechanisms explaining the fluorescent emission, further enhancing the optical properties and finally their applications in bio-imaging, photocatlysis sensing and so on. In this dissertation, carbon dots of small carbon nanoparticles surface-functionalized …

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Two-Dimensional Nanomaterials For Renewable Energy Generation And Sensing Applications, Sai Sunil Kumar Mallineni May 2018

Two-Dimensional Nanomaterials For Renewable Energy Generation And Sensing Applications, Sai Sunil Kumar Mallineni

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Two-dimensional (2D) materials have been intriguing physicists and material scientists for more than two decades due to their unique physical properties that emerge from phenomena such as charge confinement, heat flow in a 2D plane, etc. For example, graphene exhibits room temperature quantum Hall effect, quantized optical transmittance, non-local hot carrier transport, and Klein tunneling. Building on such fundamental phenomena, my work focuses on biomolecular sensing, energy generation, and storage using 2D materials such as graphene, graphene oxide, boron nitride, and 2D titanium carbide. Chapter 1 provides an introduction to 2D materials and their current status and their applications. In …

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An Exploration Of Employed College Student Experiences In Work And Leisure, Katherine Ann Jordan May 2018

An Exploration Of Employed College Student Experiences In Work And Leisure, Katherine Ann Jordan

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Background and Purpose. On-campus college student employment has been positively associated with extracurricular involvement, academic success, and retention. There is a lack of clarity, however, regarding the types of jobs and job characteristics associated with the positive outcomes of on-campus employment. In addition, it is unclear what else employed students might gain or how they might benefit from on-campus employment as opposed to off-campus employment. Furthermore, since living a balanced life has become an increasingly popular value among Millennials, the lives of employed college students need to be further examined, specifically regarding work and leisure experiences. Therefore, this study explored …

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Simulated Inflammation By Hypochlorous Acid And The Corrosion And Tribocorrosion Of Orthopedic Alloys: Feedback Between Corrosion And Inflammation, Gregory Walter Kubacki May 2018

Simulated Inflammation By Hypochlorous Acid And The Corrosion And Tribocorrosion Of Orthopedic Alloys: Feedback Between Corrosion And Inflammation, Gregory Walter Kubacki

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The current paradigm in metallic biomaterials research has focused on biological reactions to wear particles and the cascade by which these reactions contribute to adverse local tissue reactions, including implant loosening and pseudotumors. Conversely, in the body, leukocytes can produce an array of reactive oxygen species (ROS) which may alter the balance of oxidation and reduction reactions occurring at the surface of the metallic implant, thereby accelerating corrosion and causing influx of bioactive corrosion products into the adjacent tissue. Evidence of severe, localized corrosion damage of orthopedic implants has been documented on retrieved (failed) implants, but remain unable to be …

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The Chronic Toxicity Of Ion Mixtures To Freshwater Organisms: Ceriodaphnia Dubia And Pimephales Promelas (Fathead Minnow), Katherine Anne Johnson-Couch May 2018

The Chronic Toxicity Of Ion Mixtures To Freshwater Organisms: Ceriodaphnia Dubia And Pimephales Promelas (Fathead Minnow), Katherine Anne Johnson-Couch

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Dissolved ions are natural components of aquatic systems, the concentration and composition of which are greatly controlled by the surrounding geological material present. Although naturally occurring, many anthropogenic activities, including mountaintop removal mining, road deicing practices, agricultural irrigation and coal-fired power plant effluents, can greatly increase dissolved ion concentrations, as well as alter the ionic composition of freshwater systems. An increase in dissolved ions is positively correlated with an increase in salinity and conductivity. Dissolved ions have many important physiological functions within aquatic organisms, one of which is to create electrochemical gradients within cells. These gradients are necessary for controlling …

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Quasi-Continuum Non-Local Plate And Shell Models Of Carbon-Based 2d Nanomaterials, Jixuan Gong May 2018

Quasi-Continuum Non-Local Plate And Shell Models Of Carbon-Based 2d Nanomaterials, Jixuan Gong

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Non-local plate and shell models have attracted much interest in the area of grap-hene and carbon nanotube simulations. This work explores further into this area and aims to provide more accurate and reliable non-local modeling methods to graphene and carbon nanotubes. At first, a semi-analytical model for determining the equilibrium configuration of single wall carbon nanotubes is presented. By taking advantage of the symmetry charac-teristics, a carbon nanotube structure is represented by five independent variables. A line search optimization procedure is employed to determine the equilibrium values of these variables by minimizing the potential energy. With the equilibrium configuration obtai-ned, …

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Nonlinear Optical Phenomena In Emerging Low-Dimensional Materials, Yongchang Dong May 2018

Nonlinear Optical Phenomena In Emerging Low-Dimensional Materials, Yongchang Dong

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As digital information technologies continue to evolve at much faster rates than the growth of Si-based processors, the encroachment of light-based technologies into computing seems inevitable. With the advent of lasers, photonic crystals, and optical diodes, photonic computing has made significant strides in information technology over the past 30 years. This continuing integration of light into all-optical computing, optoelectronic components, and emerging optogenetic technologies demands the ability to control and manipulate light in a predictable fashion, or by design. Of particular interest, is the passive control and manipulation of light in all-optical switches, photonic diodes, and optical limiting which can …

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Graphene Foam And Helically Coiled Carbon Nanotubes As Electrodes In Energy Storage Devices, Anthony Childress May 2018

Graphene Foam And Helically Coiled Carbon Nanotubes As Electrodes In Energy Storage Devices, Anthony Childress

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Since their inception, carbon nanomaterials have been exploited for use in energy storage. The discovery of carbon nanotubes and the later isolation of graphene opened new avenues in electrode research for batteries and electric double layer capacitors (EDLCs). Their combination of flexibility, mechanical robustness, and electronic conductivity make them ideal for use as active materials and additives. My research has focused on the synthesis and implementation of helical carbon nanotubes (HCNTs) for supercapacitors and few-layer graphene in the form of graphene foam (GF) for aluminum-ion batteries. The presence of defects and dopants was controlled in each system to determine how …

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Mechanisms Of Fluconazole-Based Aneuploidy In Cryptococcus Neoformans, Damiana Altamirano May 2018

Mechanisms Of Fluconazole-Based Aneuploidy In Cryptococcus Neoformans, Damiana Altamirano

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Cryptococcus neoformans is an opportunistic fungal pathogen that primarily infects the immunocompromised. It is responsible for approximately 180,000 deaths per year in individuals with HIV. Fluconazole (FLC) is a fungistatic drug widely used to treat cryptococcosis and prevent recurrence. C. neoformans exhibits an intrinsic heteroresistance to FLC, which is an emerging barrier to effective treatment especially in resource-limited regions where FLC is often the only therapy available. Previous studies have demonstrated that C. neoformans cells confer resistance to FLC through aneuploid formation. The mechanisms underlying aneuploid formation during FLC treatment are unknown. This dissertation characterizes the effects of the initial …

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A Computational Model Of The Pulmonary Fibroblast Signaling Network As Related To Idiopathic Pulmonary Fibrosis, Jessica Lennox Batista May 2018

A Computational Model Of The Pulmonary Fibroblast Signaling Network As Related To Idiopathic Pulmonary Fibrosis, Jessica Lennox Batista

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Idiopathic pulmonary fibrosis, or IPF for short, is an interstitial lung disease that primarily affects the interstitium of the lungs (the tissue around the alveolar space). Overtime this disease causes scar tissue to form in these tissues, making them fibrous and stiff. As the disease progresses the lungs lose their ability to function properly, preventing the adequate intake and distribution of oxygen. There is currently no known cause for IPF and furthermore there are few treatments available. Medications such as pirfenidone and n intedanib can be used to slow the progression of the disease and can be used along with …

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Land Use Planning, Policy, And Water Quality Nexus For Escherichia Coli Mitigation: A Case Study Of Greenville, Sc, Katherine D'Anna Bernier May 2018

Land Use Planning, Policy, And Water Quality Nexus For Escherichia Coli Mitigation: A Case Study Of Greenville, Sc, Katherine D'Anna Bernier

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Pathogenic impairments are widespread across the United States and the source of the pollutant is both complicated and often elusive. The boundary of Greenville County, South Carolina crosses four Hydrologic Unit Code 8 watershed designations, and within those, there are over one hundred approved Total Maximum Daily Loads related to fecal indicator bacteria. This region is experiencing rapid growth and development; consequently, it is critical for planners to better understand the nexus between land use choices and water quality impacts, as zoning, ordinance decisions, and comprehensive plans can affect this relationship. The goal of this research was to correlate urbanized …

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A Meta-Analysis Of The Enantioselectvie Dechlorination Of Select Chiral Polcychlorinated Biphenyls (Pcbs), Eric Boley May 2018

A Meta-Analysis Of The Enantioselectvie Dechlorination Of Select Chiral Polcychlorinated Biphenyls (Pcbs), Eric Boley

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A meta-analysis was performed to investigate nonracemic enantiomer fraction (EF) levels of chiral polychlorinated biphenyls (PCBs) found in various media across the world. Nonracemic EF levels are those determined to be statistically different than 0.5. The existing body of knowledge from the literature provided the necessary data to determine via meta-analysis a true average EF for five selected congeners, 91, 95, 132, 136, and 149. A thorough literature search was conducted to find relevant articles that contained sampling data from lab and field studies for chiral PCBs. A database was constructed to organize the sampling data obtained from the literature. …

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Understanding Urban Renewal From A Different Perspective, Makonen A. Campbell May 2018

Understanding Urban Renewal From A Different Perspective, Makonen A. Campbell

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In 1958, the Charlotte City Council voted to demolish the community of Brooklyn for the purpose of creating a better environment for its residents and attracting business opportunities to the city. Over a ten-year period, over 9,000 residents would be forced to move to the outskirts of the city as the history of Brooklyn was erased. The history of urban renewal in Charlotte has been reported from the perspective of politicians, city planners, and businessmen who have touted the benefit of the city’s efforts. The historical literature has neglected to tell the story of those who were directly affected by …

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Taking The Plunge: Enhancing The Visitor Experience In Waterfall-Based State Parks, Margaret M. Citarella May 2018

Taking The Plunge: Enhancing The Visitor Experience In Waterfall-Based State Parks, Margaret M. Citarella

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Waterfalls have long been popular tourist attractions due to their soundscape, beauty, natural pool, and recreational opportunities. With technological advances and abundant tourism information, more visitors are being drawn to waterfalls. Such high visitation and use amplifies the risk of degrading pristine waterfall sites and their resources. Not only are waterfalls experiencing high demand, but state parks are also seeing large increases in visitation. State parks are typically located closer to population centers and complement the more well-known and iconic national parks by providing recreational opportunities to more, diverse visitors. The present study aims to provide a basis for understanding …

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Who Will Save The City: A Comparative Study Of Public Policies For Revitalization In Greenville, South Carolina And Macon, Georgia, Katharine Gallotta May 2018

Who Will Save The City: A Comparative Study Of Public Policies For Revitalization In Greenville, South Carolina And Macon, Georgia, Katharine Gallotta

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With the collapse of industry in combination with suburban sprawl, American cities nationwide experienced an economic recession in the early 1980s. To counter this recession, local governments pursued a range of revitalization policies. These public policies secured various levels of success in the cities working to bring their downtowns back to life. Creating a strategy for revitalization is a difficult process and has been approached differently all over the country. Public policies directly affect the residents and development in a city, inherently making them a representation of the city’s priorities. Macon, Georgia has pursued a revitalization strategy that centers around …

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Equine Assisted Programs For Military Service Members: A Program Evaluation Using Importance-Performance Analysis, Taylor Hooker May 2018

Equine Assisted Programs For Military Service Members: A Program Evaluation Using Importance-Performance Analysis, Taylor Hooker

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Developing research, anecdotal evidence and a growing focus on non-pharmacological interventions for veterans with post-traumatic stress support the use equine-therapy as a therapeutic outlet; however, programmatic factors that contribute to veteran’s desire to attend such programs are under-investigated. Furthermore, evaluative processes in equine therapy for this particular population are scare and vary greatly from program to program. The use of the Importance-Performance Analysis (IPA) tool when applied to social services yields direct, applicable feedback of program success and relevancy. In this study, interviews with the selected population informed the evaluation tool used to assess the importance, and subsequent performance, of …

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Better Than Adequate: An Investigation In Contemporary Short Fiction, Stephen Michael Hundley May 2018

Better Than Adequate: An Investigation In Contemporary Short Fiction, Stephen Michael Hundley

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This thesis is comprised of two components—one critical and one creative—sharing one, convergent goal of achieving a better understanding of, and ability to produce, quality fiction. The critical component addresses craft elements in contemporary fiction. Specifically, these elements include: premise, place, and decoder statements. By analyzing these techniques in the work of active, or otherwise remarkable, authors, the thesis explores the ways in which the pieces are successful and attempts to isolate and come to an understanding of the specific elements employed. The creative component, made up of six works of short fiction, hopes to employ the techniques discussed in …

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Making Interpretations: Digitally Adapting Yeats's 'Ego Dominus Tuus' As A Digital Comic, Jared Jameson May 2018

Making Interpretations: Digitally Adapting Yeats's 'Ego Dominus Tuus' As A Digital Comic, Jared Jameson

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Through adapting Yeats’s “Ego Dominus Tuus” as a digital comic the close ties between the act of interpretation and the creative process are showcased. The process explores how collaborating with those from other disciplines, in this case graphic arts, can benefit humanities scholars by not only allowing them to bring their interpretations to life through creative means but also by helping them to build and develop those interpretations in ways that may not have been otherwise apparent. In assessing this experience, a strong case can be made for viewing interpretive skills as creative devices, implementing inter-disciplinary collaboration within humanities-based instruction, …

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Are You Still With Her? Basking In Reflected Glory And Cutting Off Reflected Failure Frameworks And The Clinton Campaign Twitter Hashtags, Alexandria Jenkins May 2018

Are You Still With Her? Basking In Reflected Glory And Cutting Off Reflected Failure Frameworks And The Clinton Campaign Twitter Hashtags, Alexandria Jenkins

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This thesis intended to analyze the nature of the 2016 U.S. Presidential Election conversation on Twitter through the lens of Hillary Clinton supporters. The 2016 election was an unprecedented election in many ways. For social media, Twitter was used as a source of news, information, and as a communication tool for candidates and voters. This thesis examines the election conversation from November 7, 8, and 9 using Clinton campaign hashtags #ImWithHer and #ImStillWithHer. These hashtags provide insight into how Twitter users voted and why they chose to vote for Clinton. This thesis uses the basking in reflected glory (BIRG) and …

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The Desubjectified Subject In The Poetry Of Rosmarie Waldrop, Amanda Rebecca Johnson May 2018

The Desubjectified Subject In The Poetry Of Rosmarie Waldrop, Amanda Rebecca Johnson

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Criticism of Rosmarie Waldrop’s Driven to Abstraction has centered around her fascination with the notion of zero as both a negation and the locus of infinity, but has so far neglected to discuss the implications that this lacuna has on the role of the subject. True to its title, Driven takes the reader on a journey toward nothingness where desubjectification is made into the subject of the work. Through the use of the prose poem which eschews traditional poetic form and conventional syntax, Waldrop employs a collage that not only provides material representation of abstract concepts, but also demonstrates the …

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Edward Ii: Negotiations Of Credit In The Early Modern Public Sphere, Jane E. Kuebler May 2018

Edward Ii: Negotiations Of Credit In The Early Modern Public Sphere, Jane E. Kuebler

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This paper addresses the role that Christopher Marlowe’s Edward II plays in the establishing and expanding of an early modern public sphere. By examining the ways that power is earned, and wielded in the play, Marlowe demonstrates an economy of cultural credit that operates in both the financial and the socio/political spheres of public life in early modern England. Marlowe applies the logic of that economy beyond the realm of the common people and subjects the historical monarch to the same parameters of judgement that flourished in society, drawing parallels with the currently reigning Elizabeth I, and opening up a …

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