Digital Commons Network^™

Evaluating Climate Benefits In The Conservation Reserve Program: Methane Emissions And Carbon Storage In Restored Wetlands, Annika Kuleba

All Theses

As climate change progresses, Nature-based Climate Solutions (NbCS) have emerged as a key strategy for mitigation. Historically, wetlands were drained to increase arable land area, resulting in habitat degradation and soil erosion. To address these issues, the United States Department of Agriculture (USDA) incentivizes wetland restoration under the Conservation Reserve Program (CRP), in which landowners retire agricultural land to reestablish native habitat. Although wetlands can act as carbon sinks, they are also sources of methane, a more potent greenhouse gas (GHG). Therefore, the effectiveness of wetlands as a NbCS remains under debate due to assumed high methane emissions. Wetland functions …

Exploring Antimicrobial Performance And Compostability Of A Pectin-Based Film, Jessica Hardiman

All Theses

Packaging is considered one of the most important parts of the food supply chain. Packaging affects many aspects of the food product, such as acceptability, safety, nutritional quality, and it also provides a means of communication with the consumer. Although many people are aware of the great benefits packaging provides to the food sector, fewer think about the repercussions that occur from the waste that is generated from packaging, or the waste from the food inside the package. There is little research done on the development of compostable and antimicrobial packaging, which could reduce plastic and improve food safety. In …

Application Of Remote Sensing In Mapping Callery Pear Distribution And Biomass Estimation In The Southeastern United States, Kavi Raj Awasthi

All Theses

Callery pear (Pyrus calleryana Decne. Rosaceae) is a rapidly spreading invasive species in the southeast United States (US) that hampers the function of native tree species and the forest ecosystem. Native to Southeast Asia, the species has encroached on the natural and secondary vegetation habitats of the Southern US in recent years. This study attempted to 1) map the Callery pear across the southeast US and 2) model the aboveground biomass (AGB) of individual Callery pear trees.

We used Callery pear locations and winter imageries of Sentinel-2, Sentinel-1, L-band radar, and terrain imagery for mapping purposes. In addition, we …

Impacts Of Cognitive Workload On Veteran Driver Reaction Time: Predictive Modeling Using Bayesian And Machine Learning Methods, Kenneth Ofosu-Kwabe

All Theses

In high-demand environments, the ability to manage cognitive workload can mean the difference between optimal or safe performance and critical failure or accidents. Veterans face an elevated risk of fatal motor vehicle accidents due to post-deployment stress, combat-related injuries, and challenges readjusting to civilian driving. This study explores how cognitive workload affects reaction time performance using a driving simulator by collecting and analyzing subjective workload ratings (using the NASA-TLX survey), physiological signals from eye-tracking and performance data from a sample of 28 Veterans.

We examined how task difficulty, cognitive indicators and personal attributes influence reaction times across an interactive driving …

A Qualitative Analysis Of Graffiti Inscriptions At Ecclesiastical Sites In The South Carolina Lowcountry, Hannah Truman

All Theses

The study of graffiti has become a multi-disciplinary study. Historical and modern forms of graffiti offer a unique perspective on the connection people have with religious sites over the span of three hundred years. Within South Carolina, the establishment of twenty-five churches throughout the Lowcountry from 1706 to 1775 offers an understanding of people’s connection to spaces from the beginning of South Carolina’s establishment to the present day. Their beliefs are reflected throughout the space of the building as congregations have left their imprint.

In order to understand the relationship of people to the site over time, various methods were …

A Review On Treatment, Prevention, And Research Of Worldwide Parasitic Disease: Toxoplasmosis, Hannah Skinner

All Theses

Toxoplasmosis is a worldwide, yet often overlooked, parasitic disease caused by the protozoan parasite, Toxoplasma gondii. The parasite is capable of infecting humans and almost all warm-blooded vertebrates. Over a million people are infected in the United States with toxoplasmosis each year. Most infections are asymptomatic but severe cases can lead to vision impairment, neurological disorders, and congenital birth defects. T. gondii is transmitted through undercooked meat, infected feline feces, or contaminated water and soil. The burden of T. gondii infection is most notable in livestock, felines, and immunocompromised humans. Despite being a widespread disease, toxoplasmosis is neglected in …

Evaluation Of High Temperature Borehole Heat Exchangers For Thermal Energy Storage, Robert J. Mcdaniel

All Theses

The development of renewable power sources like solar panels and wind turbines is crucial to lowering greenhouse gas emissions and slowing the increase in global temperature. These sources are limited by the intermittency of power output depending on factors such as weather or time of day. Storing energy during periods of peak productivity improves the efficiency of renewable sources and makes them more competitive with fossil fuels. The excess energy can be stored underground as heat. At high enough temperatures (>150ºC) and discharge rates (>70 kW) the stored energy can be converted back into electricity. This turns the …

Thymosin Beta-4: A Novel Treatment For Acanthamoeba Keratitis, Victoria A. Murphey

All Theses

Acanthamoeba keratitis (AK) is a severe corneal infection caused by the free-living amoeba, Acanthamoeba. Both stages of its life cycle (trophozoite and cyst) cause infection, primarily in contact lens wearers. It is often misdiagnosed, leading to delayed treatment and poor clinical outcomes. Current treatment options for AK rely on anti-amoebic agents that are toxic to corneal epithelial cells. Further, no single drug can eliminate both forms of the amoeba. Approximately 30% of all AK infections require a corneal transplant.

Thymosin beta-4 (Tβ4) is a G-actin binding protein synthesized in almost all human cells, including corneal epithelial cells. Tβ4 exhibits …

Environmental Concern And Its Relationship To Community Attachment And Satisfaction In Southern West Virginia, Terence Asitibasi

All Theses

Extractive industries, especially coal, in the Appalachia region, have contributed to severe environmental challenges. Over the past years, residents in these areas faced increased health risks and damage to natural landscapes, impacting on how connected they are attached to their communities and overall satisfaction with their quality of life. Previous studies have examined these issues but with a focus on amenity-rich rural west, low amenities, urban-suburban, tourist-dependent and Great Lakes regions; this study looks at southern West Virginia, a coal-dependent region. And as such fills that gap by exploring how environmental concerns - combined with a longstanding reliance on coal …

Developing Reduced Order Models For Gas Bubble Formation In Irradiated Metals Using Integrated Phase Field Modeling And Koopman Operator Theory, John M. Eggemeyer V

All Theses

Irradiation damage in materials is prevalent in nuclear components, posing significant risks in the safety and reliability of nuclear reactors. Phase field models offer a versatile framework for modeling irradiation damage in materials at mesoscales. Such high fidelity method has been used to model the formation of fission gas bubbles superlattice, a microstructure array occurs at certain irradiation conditions (dose, dose-rate, and temperature). To overcome the high computational cost of phase field modeling, Koopman operator theory is applied to create reduced order models, allowing for instantaneous simulations of fission gas bubble behaviors. These low fidelity models are integrated into machine …

An Experimental And Computational Study Of High-Temperature Creep Behavior In Fully Lamellar Titanium Aluminide Alloys, Karel M. Ziminsky

All Theses

Titanium aluminide alloys have seen increased aerospace applications in recent years, especially in aircraft jet engines. They can offer benefits such as improved high-temperature strength compared to titanium alloys and reduced density compared to nickel alloys. These alloys also can exhibit high creep resistance due to their fully lamellar microstructure. These mechanical properties are desirable for components like turbine blades, where tight tolerances must be maintained for optimal performance. This research examines the high-temperature creep behavior of a fully lamellar two-phase titanium aluminide alloy, TNM® (Ti-43.5Al-4Nb-1Mo-0.1B), through experimental and computational methods. Scanning electron microscopy studies reveal the presence of large …

The Effect Corrugated Fiberboard Has On The Environment In Terms Of Compostability, Plant Growth, And Per-And-Poly-Fluoroalkyl Substance Contamination, Meredith Clem

All Theses

The “Lasagna Method” is a popular and sustainably perceived technique that many gardeners use as a free and convenient method to dispose of cardboard (corrugated fiberboard) packaging while also improving their gardens. Many claim that this creates benefits for your garden, but many others have proposed their concerns, including the safety of the practice. This research analyzes the compostability of cardboard, the effect it has on plant growth and development of lettuce, and its contamination of a prominent chemical that has known negative effects on human health. The results of these studies showed that cardboard, as it is currently produced …

Evaluating The Role Of Electrostatic Forces In The Adsorption Of Perfluoroalkyl Substances To Granular Activated Carbon, Thomas A. Mccall

All Theses

In response to new drinking water regulations announced by the EPA in 2024, many municipalities will need to monitor concentrations and implement new treatments to address PFAS, a class of anthropogenic organic contaminants. A leading technology for this application is GAC adsorption due to its familiarity and availability. The adsorption of four PFAS species (PFBA, PFBS, PFOA and PFOS) to Calgon Filtrasorb400 (F400) was evaluated for a range of pH and ionic strength conditions to investigate the role of electrostatic interactions in adsorption capacity. These PFAS are all strong acids, so pH was used as a control for GAC surface …

Graph Based Deep Reinforcement Learning Aided By Transformers For Multi-Agent Cooperation, Michael S. Elrod

All Theses

Mission planning for a fleet of cooperative autonomous drones in applications that involve serving distributed target points, such as disaster response, environmental monitoring, and surveil- lance, is challenging, especially under partial observability, limited communication range, and uncertain environments. Traditional path-planning algorithms struggle in these scenarios, particu- larly when prior information is not available. To address these challenges, I propose an innovative framework that integrates Graph Neural Networks (GNNs), Deep Reinforcement Learning (DRL), and transformer-based mechanisms for enhanced multi-agent coordination and collective task ex- ecution. My approach leverages GNNs to model agent-agent and agent-goal interactions through adaptive graph construction, enabling efficient …

Investigating The Influence Of Animation And Conversational Virtual Agent Features On The Usability And User Experience Of The Smartphone Mental Health Application “Airheart”, Victoria Hill

All Theses

Rates of depression in college students have skyrocketed since the beginning of the COVID-19 pandemic, reflecting a need for effective, accessible mental health interventions. One potential intervention includes mental health (MHealth) apps. Virtual agents within MHealth apps may represent one way to provide human-like connection and therapeutic benefits. Despite the abundance of MHealth apps currently available for public use, few include virtual agents. Moreover, it is unclear which virtual agent features within mental health apps may be particularly beneficial in providing a positive user experience. The current study sought to evaluate how features of virtual agents, such as animation and …

Community Wastewater Treatment Resilience Assessment, Tristan Veal

All Theses

With the rising threat of climate change and cascading impacts from infrastructure failure there is a growing need to strengthen community resilience. Theoretical and practical resilience frameworks are available, but they vary in aim and scope; there is no standard tool to assess resilience. This research expands on the resilience matrix (RM) application methods of previous research completed by the United States Army Corps of Engineers (USACE) and Clemson University. That work focused on drinking water treatment systems and developed a few dozen specific indicators, or metrics, to quantify resilience. This research adds wastewater infrastructure with the aim of identifying …

Unsettling Femininity In Ottessa Moshfegh’S My Year Of Rest And Relaxation, Audrianna Witcher

All Theses

This thesis covers how Ottessa Moshfegh’s My Year of Rest and Relaxation critiques traditional understandings of femininity and the inadequacy of neoliberal feminism to address the systemic issues that women face. Using Lauren Berlant’s concept of femininity as a genre, this thesis traces how Moshfegh implements disgust and abjection to reject mandates of cleanliness and emotional labor that are central to traditional femininity. Moshfegh also utilizes disgust and the narrator’s attempt at a year-long sleep to resist the ideals of productivity and self-care that are central to neoliberal feminism. In employing these affects, Moshfegh resists the social structures that exploit …

When 'Weird' Means 'Dangerous': Viruses And Firewalls In Affective Polarization, Nathan J. Locke

All Theses

As traditional sources of epistemic authority face declining trust, alternative narratives have gained prominence - often leveraging the emotional and cultural resonance of seemingly simple terms. In the 2024 election cycle, the term “weird” emerged as a potent meme in American political discourse. Using a memetic perspective that incorporates elements of framing theory and Social Judgment Theory, this thesis investigates the use and reaction to “weird” and its role in shaping perception of Donald Trump, his political allies, his followers, and his opposition during and immediately after the 2024 Presidential election. The memetic perspective, which views ideas as units of …

Commodification And Objectification Of The Black Male Athlete In The Nfl, Jalen A. Terrell

All Theses

The black male body has often been viewed as a commodity in Western culture since the commodification of the black male body in the historical slave auction. Albeit slave owning ended in 1863 with the Emancipation Proclamation, it was not until 1946 that the National Football League (NFL) became integrated, and the commodification of black bodies became prevalent once again. As such, this study looks to understand how the X population from the data set for this study demonstrates the commodification of the black male body, the general discourse around the black and white male athletes, and explores the language …

Essential Components For A Uas Standard Operating Procedure Manual For State Departments Of Transportation, Nurudeen Segun Lawal

All Theses

The integration of Unmanned Aircraft Systems (UAS) within state Departments of Transportation (DOTs) has become increasingly essential for improving efficiency, safety, and regulatory compliance in transportation operations. However, the lack of a standardized approach to UAS program management has resulted in variability in policies, procedures, and implementation strategies across state agencies. This study examines how state DOTs incorporate the Association of Unscrewed Vehicle Systems International (AUVSI) Organizational Implementation Guide (OIG) 35 essential components into their UAS Standard Operating Procedures (SOPs) and identifies 13 additional components that address agency-specific operational, regulatory, and administrative needs. Through an analysis of publicly available SOPs …

Connecting With Millennials: A Guide For Donor Engagement, Sydney A. Hopkins

All Theses

Millennials are emerging as a vital donor demographic, yet many resource-limited nonprofits, including Clemson Community Care (CCC), struggle to effectively engage this generation. This applied thesis project investigates how CCC can build meaningful connections with millennial donors by exploring nonprofit awareness, donor motivations, communication expectations, content preferences, and common barriers to giving. Using qualitative data gathered from two focus groups of millennial participants, this study reveals that millennials represent a diverse and distinct audience with unique expectations for nonprofit communication. Grounded in public relations theories of stewardship and organization-public relationships (OPR), the research highlights the importance of flexibility and autonomy …

Industrialization And Immigration: Latino And Hispanic Immigrants In The South Carolina Upstate, Matthew D. Girardeau

All Theses

European investment in the South Carolina Upstate created favorable conditions for Latino immigration. French tire manufacturer Michelin came to the region in the 1970s, and the construction of the largest BMW plant in the world in the 1990s greatly impacted the local economy. The Upstate had a history of outside investment, beginning with Northern industrialists in the textile industry and later European companies that provided equipment for textile mills. The automotive industry did not necessarily employ Latinos, but the money generated by the sector created booming construction and service industries. Latinos built a community in western Greenville County and established …

Laboratory Performance Evaluation Of Hot Mix Asphalt Mixtures With Incorporations Of Different Recycled Plastic Additives Using The Dry Method, Alvaro A. Cerdas Murillo

All Theses

Asphalt pavements are susceptible to distresses such as cracking, rutting, and moisture damage, which reduce service life and increase maintenance costs. This study evaluated the use of recycled materials from HDPE and LDPE plastics (shredded and pelletized) and PET fibers of two lengths as asphalt mixture additives to provide a sustainable approach to improve performance. The materials were incorporated into two control mixtures designed with the Balanced Mix Design (BMD) method. Laboratory testing assessed cracking and rutting resistance, moisture susceptibility, abrasion resistance, and dynamic modulus across a range of conditions.

Results showed that PET fibers improved cracking resistance due to …

Efficient Solvers And Anderson Acceleration For The Bingham Equations, Victoria L. Fisher

All Theses

This work studies two techniques utilized to solve the Bingham equations that model viscoplastic flow. An Uzawa-type iterative procedure is first analyzed and tested for poor convergence of velocity and stress. We apply Anderson acceleration (AA) to this method and show improved convergence rates for both velocity and stress. A solver utilizing regularization is introduced, and AA is also applied to display better convergence results. We propose a new method that combines these two solvers and applies Anderson acceleration.

Motivations And Goals For Combatting Covid-19 Misinformation In Clinical Setting: A Case Study Of Nursing Students., Amarachi H. Okoronkwo

All Theses

The misinformation surrounding COVID-19 disrupted public health efforts to mitigate the virus. This study examined the motivations and goals of nursing students to combat COVID-19 misinformation within clinical settings. Medical professionals are best suited to combat health misinformation due to their expertise and lived experience, but they are not mandated but encouraged to address COVID-19 misinformation. Grounded in qualitative research methods and grounded theory, semi-structured interviews were conducted with nursing students who have had clinical practice after the start of the COVID-19 pandemic. Findings reveal that the key motivations and goals for addressing misinformation include the need to educate patients, …

Healthy Dietary Patterns’ Impact On Depressive Symptoms: A Meta-Analysis Of Randomized Controlled Trials, Angela Encardone

All Theses

As the search for innovative mental health treatments expands, dietary interventions have emerged as a promising approach for alleviating depressive symptoms. This thesis presents a meta-analysis of randomized controlled trials (RCTs) examining the efficacy of whole-of-diet nutritional interventions in reducing depression symptoms among adults. Grounded in Bronfenbrenner’s Bioecological Model and Engel’s Biopsychosocial Model, this study explores the intersection of biological, psychological, and social factors that influence mental health outcomes. A systematic review identified six eligible RCTs assessing the impact of healthy dietary patterns, including the Mediterranean diet and other plant-based interventions, on depression symptoms. A random-effects meta-analysis revealed a significant …

Crisis Calling: Fan Relationships With Athletes, Alexis T. Merriman

All Theses

This study identifies the importance and complexities of parasocial relationships, as well as looks at the effects these relationships have on NFL sport consumers in our society. Sport fandom, specifically high-level fandom attachments such as parasocial relationships (PSR), have called for a need to examine what occurs for both athletes and fans when a parasocial relationship is jeopardized in times of inevitable athlete or league crisis. This study applies Situational Crisis Communication Theory (SCCT) and Turning Point Approach to examine these complex parasocial relationships. Due to gaps in literature looking at parasocial breakup (PSB) and relationship turbulence through public relations …

Tiktok Made Me Do It: #75hard, Alexis Lamere

All Theses

TikTok is one of many social media platforms that distribute entertainment videos to its users based on an interactive algorithm. It has an influential impact on the information individuals are exposed to, especially when it is a trending topic. These trending TikTok videos reach millions of viewers; one popular trend on this app is #75Hard. #75Hard is a restrictive fitness program emphasizing mental toughness, self-discipline, and strict diet and exercise routines. However, popular trends like this one can perpetuate unrealistic and unattainable goals that put people at risk for negative outcomes such as body dissatisfaction and disordered eating. The present …

Deleting Values May Either Increase Or Decrease Variance, David L. Farnsworth

Articles

The impact upon variance when a value is deleted is addressed. It is shown that the cutoff for the deleted value yielding an increase or a decrease in variance is approximately one standard deviation from the mean for a univariate random variable with equally distributed probability on a finite set of elements and for a univariate set of observations. The influence of truncation of the domain for such a discrete random variable and for observations is considered.

Spatiotemporal Changes In The Imperiled And Diverse Mussel Assemblage Of The Spring River In Kansas In Response To Known And Emerging Pollutants, Joshua Holloway

Electronic Theses & Dissertations

Kansas was historically home to 50 species of freshwater mussels, of which 42 remain extant. The Spring River of southeastern Kansas is home to 34 of the remaining 42 mussels, many of which are imperiled. Elevated metal concentrations that resulted from past lead and zinc mining in the Tri-State Mining District historically imperiled Spring River mussels, but this threat has abated over the last 20 years. Ammonia pollution may have replaced the threat of metals, however, with potentially severe consequences for Spring River mussels. Our objectives were to evaluate contemporary mussel assemblage structure, in addition to spatiotemporal trends in the …