Digital Commons Network^™

Novel Atomic Layer Deposition Processes Of Silver For Battery Applications, Darlington Ehijie Imhanzuaria

Graduate Theses and Dissertations

This thesis presents a novel approach to enhance the performance and stability of anode-free lithium-ion batteries (AFLBs) by employing atomic layer deposition (ALD) to coat copper (Cu) current collectors with a silver-aluminum oxide (AgAlO_x) layer. Leveraging the unique capabilities of ALD for precise and conformal deposition, the AgAlO_x coating was achieved using triethyl phosphine-(6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedionato)-silver(I) (Ag(fod)(PEt₃)), trimethylaluminum (TMA), and de-ionized water (H₂O) as precursors. This innovative coating method significantly enhanced the cycling stability and Coulombic efficiency (CE) of both Li||Cu and Cu||NMC811 cells, as evidenced by improved electrochemical performance metrics. The AgAlO_x layer …

Sample Archival System For Quantum Device Manufacturing: Design, Construction, And Integration, Corbin Russ

Graduate Theses and Dissertations

In the manufacturing of quantum devices using 2-dimentional (2D) materials, current processes rely on manual operations of production. MonArk Quantum Foundry is developing a facility to semi-automatically, and ultimately automatically, produce 2D materials. One crucial step in the experimentation process is archiving these materials and completed chips for future access. The sample archival system robot was produced to fulfill this need. The system is a 4 Degree-of-freedom (DOF) cartesian storage system that stores custom aluminum chip trays of sixty samples, having a total storage capacity of 14,400 samples. The sample archive system meets key goals from: it integrates with the …

An Analytical Evaluation Of Economic Geography Within Maine And Its Resource Industries: 1600 To Present, Maureen Mantooth

Graduate Theses and Dissertations

Resource peripheries represent a fringe area within economic geography, originating from the core-periphery theory developed by Friedmann and Miller. This concept has evolved to address global and regional contexts, referring to marginalized regions that rely heavily on the extraction and export of natural resources. By studying these regions, we gain a deeper understanding of critical components in global economic systems. This dissertation focuses on Maine as a case study of a resource periphery, using the framework proposed by Hayter et al. (2003) within the broader regional contexts of New England and the United States. Key factors explored include resource exploitation, …

Laughing Tiger, Michael Shum

Graduate Theses and Dissertations

Laughing Tiger is the title of my thesis exhibition/paper, as well as the middle name I was gifted with. The relationship I have with this name has changed throughout my life. At one point, this name was more a reminder of being different, but now it is a personal symbol I take pride in. My name is Michael Laughing Tiger Shum, and I make inventive autobiographical paintings about the relationships we invest in, whether it’s with others, objects, rituals, environments, and so on. I have broken down my painting practice into three main themes, which are actions, experiences, and thoughts. …

Mandatory Bliss, Jocelyn Reid

Graduate Theses and Dissertations

Mandatory Bliss is an exhibition of sculptural objects that discuss value, feminism, material hierarchy, and societal expectation. Using mundane structures and objects, this installation aims to frustrate and dissect the significance of the tangible items that we interact with every day.

Mindful Symbiotic Ecosystems. Designing For Women In Remote Workspaces, Andrea Guevara Araujo

Graduate Theses and Dissertations

Women represent 61% of designers in the workforce but hold only 29% of leadership roles. This disparity highlights a critical need for an ecosystem that removes barriers and cultivates mentorship, community, and leadership among women (Bolt, 2020). Even though women have proven their ability to succeed in male-dominated corporate cultures, the real question is not about capability but sustainability. Driven by overwork, competition, and burnout, the workplace does not just push women out; it leads to long-term instability for the entire organization (Krivkovich et al., 2024). In the workplace, a culture of masculinity reinforces harmful, outdated mindsets and glorifies aggressive, …

Public Comment: Using Critique-Like Mediating Artifacts To Democratize Discourse At City Council Meetings, Piper Schuerman

Graduate Theses and Dissertations

Are local governments designed for equitable citizen participation? While civic engagement aims to empower citizens and support representative governance, barriers to participation can hinder those outcomes. City council meetings, key venues for public input, pose specific challenges such as long durations, dense content, and intimidating formalities. These issues disproportionately affect Generation Z (born between 1997 and 2012), who frequently report feeling underinformed or having limited time to engage. This thesis explores how city council meetings might use multimodal mediating artifacts, inspired by design critique practices, to make public discourse more accessible for Gen Z adults.

Grounded in activity theory and …

Using Scaffolding, Gamification, And Self Awareness To Create Responsive Ux/Ui In Cad Software To Nurture Metacognition In Novice Users, Obed Ibrahim Gonzalez

Graduate Theses and Dissertations

Computer-aided Design (CAD) software represents a significant shift from manual and analog design processes to digital workflows, offering substantial utility, accuracy, and productivity benefits. However, CAD software often presents a steep learning curve, particularly for novice users who are new to the software or possess only basic knowledge. Traditional CAD curricula have predominantly focused on technical problem-solving—teaching tools and systems—while often neglecting strategic knowledge that encompasses reflection, planning, and refining, which are essential components of metacognition. Metacognition is crucial for transforming novices into experts who use fewer and more complex commands, employ sophisticated planning, and achieve their goals more efficiently. …

Development And Investigation Of A Novel Near-Wall Methodology For Large-Eddy Simulation Based On Dynamic Hybrid Rans-Les, Michael Tullis

Graduate Theses and Dissertations

The use of computational fluid dynamics (CFD) to test engineering designs with reduced cost and time compared to physical testing has become increasingly common in a range of industries and research fields. While numerical methods exist that can accurately solve the equations that govern the flow of fluids, these methods are computationally expensive for practical engineering problems due to the large amount of computational power needed to resolve the fluid flow over the entire range of length and time scales. Several different approaches have been introduced to address this computational cost issue, namely Reynolds-averaged Navier-Stokes (RANS) modeling and scale resolving …

A Living House Never Stands Still, Holly Rose Kranker

Graduate Theses and Dissertations

A Living House Never Stands Still is an exhibition that explores the interplay between place, memory, and the suspension of time through diverse mediums and materials. I engage with seemingly mundane objects, interpreting them through a non-linear, dream-like, and irrational framework to unearth latent connections across time–past, present, and future. Central to these explorations is the concept of home—not merely as a physical location, but as an evolving entity. Home is a sacred space for me.

My recent studio reflections are focused on the lifecycle of objects, the emotional responses they evoke, and how these cycles emulate the human body …

Mechanical Properties And Microstructural Characteristics Of Hydrated Bcsa Cement At Extreme Temperatures, Behzad Farivar

Graduate Theses and Dissertations

Belitic Calcium Sulfoaluminate (BCSA) cement is an alternative binder known for its rapid setting and high early strength, making it ideal for applications such as fast-track construction and repair. This study presents a comprehensive investigation into the behavior of BCSA cement under a wide range of curing temperatures, with emphasis on early-age strength development, admixture effects, and the use of the maturity method for strength prediction.

The research evaluates BCSA cement performance in both hot and cold environments, ranging from approximately -28.9 °C (-20°F) to 49 °C (120°F). In warm climates, citric acid was used as a set retarder to …

Latent Variable Dyadic Regression Models For Predicting Over/Under Bets In Sports Betting, Alexcia Trejo

Graduate Theses and Dissertations

This thesis explores the use of latent factor models to uncover hidden structures in pair wise outcomes derived from Over/Under betting markets in sports betting. Specifically, we implement and evaluate the Eigen model, a latent space model that represents dyadic data using node-specific vectors whose inner product govern edge probabilities. By modeling relationships between teams as adjacency matrices of binary outcomes, we investigate the extent to which the Eigen model captures both homophily, the tendency of similar teams to yield consistent betting results, and stochastic equivalence, where different teams exhibit indistinguishable patterns of Over/Under outcomes. A Bayesian formulation of the …

Experimental Study Of Novel Bcsa Scc Repair Materials And Implications On Corrosion In Bcsa Concrete Structures, Elizabeth S.M. Poblete

Graduate Theses and Dissertations

Some current building codes for structural concrete allow the use of alternative cement concrete if their structural, durability, and fire performance can be shown to be comparable to portland cement (PC) concrete. One such alternative cement, belitic calcium sulfoaluminate (BCSA) cement, is a promising standalone replacement for portland cement given its lower global warming potential (GWP), fast setting time, and high early age compressive strength. These properties also make it an ideal repair material. But repair materials often need to be highly flowable and easy to consolidate and their performance when used to repair PC concrete structures must be understood. …

Leveraging Natural Variation In Yeast To Understand Susceptibility Differences In Parkinson’S Disease, Julio Andres Molina Pineda

Graduate Theses and Dissertations

Parkinson’s Disease (PD) is a neurodegenerative disorder that causes countless suffering around the world. Both forms, familial and sporadic, have been associated with the misfolding and cytotoxicity of α-synuclein, an otherwise non-pathogenic protein suspected to have various roles in the normal maintenance of the central nervous system. Model organisms have emerged as great vessels to uncover the cellular and molecular mechanisms that shape α-syn biology, and great strides have been made to understand it. Yet, it is still unclear why some individuals are affected by α-syn toxicity, while others not so much. Since it’s extremely complicated to study and probe …

Rewriting The School Calendar: A Mixed-Methods Analysis Of Four-Day School Week Implementation In Arkansas, Kate Barnes

Graduate Theses and Dissertations

The four-day school week (4DSW) has gained traction across the United States, particularly in rural districts seeking innovative responses to mounting challenges. Despite its expanding adoption, key questions remain regarding the motivations for implementing 4DSW schedules and their implications for teacher well-being and student achievement. This dissertation examines the emergence and effects of the 4DSW in Arkansas, where adoption has increased rapidly in recent years, offering a unique context shaped by state-level policy and rural dynamics. Employing a mixed-methods, this dissertation investigates (1) why and how districts adopt the 4DSW, (2) whether the policy alleviates teacher burnout, and (3) how …

A Wicked Game, Andrew Nikonowicz

Graduate Theses and Dissertations

A Wicked Gameis an installation comprised of a video game in an arcade cabinet, photographs, sound, and sculpture. The installation explores the complexity of play and personal memory. Working from the concept of “wicked” (Epstein) learning environments – domains with hidden rules, unstable structures, and inconsistent feedback – the project constructs a playable space, where players must navigate an inhospitable environment, echoing the experience of living in a world that resists accommodation.

The installation centers around an all-black arcade cabinet placed in a darkened gallery space, inviting visitors to play A Wicked Game. The game demands the player …

Survival Signature Estimation For All-Terminal Networks By Solving The Multi-Objective Bottleneck Spanning Tree Problem, Dewan Maisha Zaman

Graduate Theses and Dissertations

This research examines the problem of estimating the survival signature of all-terminal networks using Monte Carlo (MC) simulation. Following a recent similar result for twoterminal networks, we show that the work required within each MC replication corresponds to solving a multi-objective bottleneck spanning tree (MOBST) problem. We implement the resulting MC procedure using a “Blocks” algorithm from the literature to solve the MOBST in each replication by identifying its minimal set of non-dominated points. We compare this implementation against intuitive benchmark procedures for completing the work within an MC replication. We conduct numerical experiments to assess the efficacy of multi-objective …

Gender, Politics, And Power: How Women Presidential Candidates Are Framed By News Narratives, Victoria Hernandez

Graduate Theses and Dissertations

The aim of this study was to look at the coverage of the presidential campaigns of Hillary Clinton in 2016 and Kamala Harris in 2024 during the Democratic National Convention, and analyze the differences in regard to gender, race, and political bias. The examination of these news narratives helps explore a question of whether journalists report with bias when covering politics. The researcher analyzed 11 published pieces from five mainstream media outlets. Findings of the study show that bias is unavoidable even when a journalist strives for objectivity which does not exist in newsrooms across the political spectrum. The findings …

Bang!: Real-Time Measurements And Transcriptomics Of Metabolic Reprogramming In Activated Macrophages At Fever Temperature, Kenneth Howard Taylor

Graduate Theses and Dissertations

We investigated the real-time metabolic rates of activated macrophage cell lines derived from mouse, chicken and rainbow trout. Each species showed a different kinetic signature with metabolic rates accelerating under fever conditions specific to each organism. Upon activation mouse macrophages increased their rate of glycolysis early and then a later reprogramming phase occurred with a dramatic decrease in oxidative phosphorylation (OXPHOS) accompanied by a reciprocal second increase in glycolytic rates. Chicken macrophages showed an initial increase in both glycolytic and OXPHOS rates. The late drop OXPHOS rates also occurred in chicken however there was no reprogramming that occurred as glycolytic …

Literary Postcritique And American Transcendentalism: Helping Students Practice Community-Building By Rewilding Literature In The Classroom, Tate Aldrich

Graduate Theses and Dissertations

Literary postcritique is an emergent theoretical approach to literature that has elicited skepticism among many in academia because of its central claim that their unchecked overreliance on suspicious and symptomatic reading styles is diminishing the pedagogical potential of our reading together. To restore this potential, Rita Felski, a champion of literary postcritique, suggests adopting an aesthetic reading style, a mid-level interpretation that neither indulges in the formalists’ habits of close scrutiny nor in the cultural critics’ wider lens of political and social contexts. In The Limits of Critique and Hooked, Felski argues that an aesthetic reading style can develop …

Comparison Of Rt-Qpcr And Rt-Ddpcr On Assessing Model Virus In Wastewater, Wafa Youssfi

Graduate Theses and Dissertations

There is an increasing demand for quantifying viral loads in diverse wastewater systems using polymerase chain reaction (PCR). This study evaluates the performance of two commonly used workflows: reverse transcription quantitative PCR (RT-qPCR) and reverse transcription droplet digital PCR (RT-ddPCR) in wastewater. We compared the two methods by measuring the viral ribonucleic acid (RNA) of a model virus Phi6 in samples collected from various treatment stages at the Westside Wastewater Treatment Facility in Fayetteville, AR. RNA was extracted from real and synthetic wastewater samples and analyzed in parallel using both RT-qPCR and RT-ddPCR. Findings reveal that both methods demonstrated similar …

Examining Stable Isotope Variation Of Herbivores In South Luangwa Valley In The Context Of Anthropogenic Influences, Taylor Hubbard

Graduate Theses and Dissertations

Stable isotopes are an effective tool for inferring mammalian behavior. Though there are multiple factors that can influence mammalian diets, anthropogenic influence is one that is often overlooked. For example, it is important to consider how wildlife living in areas where there are frequent, documented human-wildlife interactions will modify behavior. National Parks (NPs) are a great example of this because of the common misconception that since there are protections in place, that means it is devoid of anthropogenic influence. South Luangwa National Park contradicts this misconception. Though there are protections for wildlife in place within the park, it is unfenced …

Quick Response Codes In Extension Outreach Communications: Insights From A Visual Content Analysis And Educators’ Perceptions, Kobina Danful Fanyinkah

Graduate Theses and Dissertations

Increased smartphone use presents an opportunity to enhance the creative inclusion of Quick Response (QR) codes in extension outreach efforts. Tailoring extension programs to communicate with specific audiences has been identified as essential, highlighting the need for targeted and context-specific strategies. The development of QR code technology has provided a unique approach that allows extension professionals to target clientele with specific extension messages and programs. While extension has a commendable record in educational delivery through traditional forms of outreach, research on how best to employ digital tools with extension audiences is thin at best. Though the rising popularity of QR …

Exploring The Role Of Influencer Marketing In The Animal Health Industry: A Content Analysis Of Strategies And Impact, Haylee Henry

Graduate Theses and Dissertations

A review of literature revealed a lack of peer-reviewed research on influencer marketing within the animal health and nutrition industry, specifically within the livestock sector. This study aimed to address this gap by analyzing how animal health and nutrition companies of different sizes utilized influencer marketing and how consumers interacted with content tailored to influencer marketing. A content analysis was conducted. This study collected and analyzed social media influencer posts from eight North American animal health and nutrition companies, three small, three medium, and two large, between January 2023 and December 2024. Influencer content included posts by individuals, partner organizations, …

The Evolving Changes In The Regionalization Of Export Bans On U.S. Poultry Trade From The 2015 And 2022 Highly Pathogenic Avian Influenza Events, Kylie A. Roesler

Graduate Theses and Dissertations

As food security becomes a growing concern worldwide in a trading system dominated by globalization, the safeguarding of a bio-secure food system is at risk. One of the greatest risks to this stability of the system is, highly pathogenic avian influenza or HPAI which is growing in frequency and impact. Therefore, the global response to disease events is evolving into a newfound understanding of disease prevalence across the animal protein industries. This study will analyze the 2022 HPAI event in the United States regarding the regionalization of restrictions imposed by trading partners accounting for trade agreements executed. The examination of …

Physiological And Molecular Responses Of Diverse Rice Genotypes Under Drought Stress, Huda Mohmmed Alshaya

Graduate Theses and Dissertations

Climate change-induced drought stress is a significant constraint on global rice (Oryza sativa L.) production, threatening food security. This study evaluated the drought resilience of 15 diverse rice genotypes from the USDA mini-core collection under field, greenhouse, and osmotic stress conditions. Field trials assessed reproductive-stage drought tolerance based on panicle length (PL), number of spikelets per panicle (NSP), and spikelet sterility (SS). Greenhouse experiments examined moisture retention at the vegetative stage. Significant genotypic variation was observed, with genotypes 310724, 310779, 311181, 311603, 311793, and Vandana exhibiting drought tolerance through stable PL and SS. Additionally, genotypes 310100, 310428, 311255, N22, …

Trends In Prenatal Care Utilization, 2014-2022: The Role Of Race And Ethnicity, Sidney Bigham

Graduate Theses and Dissertations

The United States has made significant advancements in healthcare, yet maternal mortality rates continue to rise, with pronounced racial and ethnic disparities in prenatal care (PNC) utilization. The current study examines PNC trends from 2014 to 2022 using data from the CDC WONDER Natality database, focusing on disparities across racial and ethnic groups and the impact of the COVID-19 pandemic. Findings reveal a concerning decline in PNC utilization, with average visits decreasing from 11.24 in 2014 to 10.96 in 2022. Persistent racial disparities are evident, as Non-Hispanic Black and Hispanic women consistently receive fewer PNC visits compared to Non-Hispanic White …

Lgbtq+ Childhood Abuse, Reporting, & Parental Rights, Meagan Smith

Graduate Theses and Dissertations

This study aimed to investigate LGBTQ+ childhood maltreatment, its reporting generally, and the impact of religion on reporting. It was hypothesized that LGBTQ+ youth will experience more maltreatment than their non-LGBTQ+ peers; among those who experienced maltreatment, LGBTQ+ youth will be less likely to receive help or have reports made; and those from more religious families will be less likely to have received help or had their maltreatment reported. A sample of individuals between the ages of 18 and 35, currently living in the states of Arkansas, Mississippi, Missouri, Louisiana, Oklahoma, or Texas, was recruited to complete a cross-sectional survey. …

Identifying Microbial Complexities And Control Strategies At Pre-Harvest Poultry Production, Tolulope Tiwa Ogundipe

Graduate Theses and Dissertations

While significant progress has been made in post-harvest control of Salmonella in the poultry industry, the development of effective pre-harvest intervention strategies remains critical for reducing foodborne pathogens. Environmental reservoirs such as poultry litter and drinking water systems (DWS) are potential harborage sites for Salmonella and other microbial communities. Understanding the microbiota of these environments, including biofilms within water lines, is essential to identifying factors contributing to Salmonella colonization and improving pre-harvest control approaches. This study aimed to evaluate the incidence and quantity of Salmonella in poultry litter and water lines, characterize the microbial populations in these environments, and assess …

Evaluation Of Fluridone In Rice, Maria Carolina De Carvalho Rocha Souza

Graduate Theses and Dissertations

The increasing pressure of Palmer amaranth [Amaranthus palmeri (S.) Watson] in rice (Oryza sativa L.) fields demands new chemical control options to manage this weed. The recent labeling of fluridone on this crop from the three-leaf rice stage offers an additional residual herbicide for battling Palmer amaranth; however, research is needed to evaluate its effectiveness and rice tolerance. Field experiments were conducted to evaluate Palmer amaranth control and rice tolerance to fluridone across different locations in Arkansas in 2022, 2023, and 2024. Preemergence (PRE) applications of fluridone at 168 g ai ha^⁻1; (1× label rate) and 336 …