Digital Commons Network^™

Shaping Minds, Shaping Future: Analyzing K-12 Climate Change Education Policy Preferences In Arkansas, Nataliia Borozdina

Graduate Theses and Dissertations

Climate change education in K-12 public schools is a highly debated and divisive policy issue, particularly in politically conservative states such as Arkansas, where ideological divisions often dominate and shape public attitudes and policy preferences. This dissertation examines the attitudes, preferences, and behavioral intentions of three key stakeholder groups, namely the policy elites, general public, and educators toward climate change education policies in K-12 public schools in the state of Arkansas. While political party affiliation is an important factor, this study explores a more nuanced relationship by considering the interplay of Cultural Theory, risk perception, trust in government, climate change …

Adversarial Machine Learning: Methods For Attacks And Defenses, Minh Hao Van

Graduate Theses and Dissertations

With the rapid development of machine learning in real-world applications, enhancing security plays an important role. Adversarial machine learning focuses on understanding malicious actions from attackers and developing defensive techniques against such threats when deploying machine learning systems. An attack can occur in different scenarios, such as poisoning attacks during the training stage and evasion attacks during the testing stage. Although extensive research has explored defense strategies to deal with these harmful attacks, there is a need for further research into areas such as how to counteract malicious attacks with healthy noise or how to train an adaptive defense against …

Parole Predictions: Estimating The Likelihood A Humanitarian Parole Group Will Receive A Status Adjustment, Amethyst Osborne

Graduate Theses and Dissertations

Humanitarian parole is an immigration policy that allows paroled individuals to enter or remain in the United States temporarily. The standard pathway for parolees to gain legal permanent residency (LPR) is limited by a number of requirements and restrictions, i.e., sponsorship from a family member or employer is usually required. However, in some instances, laws have been passed that grant an automatic adjustment to LPR status for select groups of parolees. This study is intended to investigate the circumstances that lead some groups to receive a status adjustment while other groups are denied a dedicated pathway to legal permanent residency. …

A Robust Rf Fingerprinting Approach Using Physics-Informed Neural Networks, Jozef Dusenka

Graduate Theses and Dissertations

Radio frequency (RF) fingerprints, caused by unique imperfections in communication hardware, offer a promising solution for zero-trust security. However, existing RF fingerprinting techniques, which aim to extract these signatures from transmitters to uniquely identify devices, often struggle with robustness in the face of temporal and spatial variations in real-world, time-varying wireless environments. For example, a neural network trained on RF signals collected on Day 1 can experience a significant performance drop when tested with data from Day 2.

To address this challenge, we propose a novel, robust RF fingerprinting method based on Physics-Informed Neural Networks (PINNs). Rather than training the …

Impact Of Smartphone Usage On The Performance And Satisfaction Of Hospitality Employees, Karalee Anne Taves

Graduate Theses and Dissertations

This study examined the impact of smartphone usage on the job outcomes (job satisfaction and performance) of employees, specifically focused on the hospitality industry, where employees’ income and performance heavily rely on emotional labor. The research was aimed to distinguish between negative smartphone activities (e.g., doomscrolling, social comparison) and positive activities (e.g., listening to calming music, engaging in stimulating games) to determine how these behaviors affect employees. Using the Stimulus, Organism, Response Cognitive Theory (SOR), the study examined if positive smartphone usage enhances well-being and job outcomes, while negative usage diminishes them. The results revealed that smartphone usage does not …

Exploring 2slgbtqia+ Parenting In Northwest Arkansas, Bailey Mason

Graduate Theses and Dissertations

Since the U.S. Census Bureau first published data on “same-sex” households in 2011, research has repeatedly indicated the majority of 2SLGBTQIA+ parents (here on referred to as “queer parents”) reside outside of major cities in heavily populated regions of the country. However, due to widespread metronormative narratives about the queer experience, the experiences of queer parents in less-populated regions are rarely studied. This qualitative study explores the lived experiences of queer parents in Northwest Arkansas, a region of the politically and religiously conservative Southern U.S. with areas both urban and rural. Applying grounded theory and drawing from queer theory to …

Crispy Not Risky: Effects Of Environmental Conditions On Low-Moisture Food Persistent Bacterial Pathogens, Manita Adhikari

Graduate Theses and Dissertations

Low-moisture foods (LMFs) were not historically seen as safety risks due to their ability to inhibit pathogen growth, but evidence shows pathogens can survive in LMFs long-term, causing outbreaks and recalls. Previous studies have lacked the ability to replicate real-world contamination scenarios in LMF processing environments. This research aimed to develop inoculation methods to form LMF persistent bacterial populations (LMF PBPs) and assess pathogen responses to environmental factors, culturing methods (broth vs. lawn), and matrix type and ratio. Inoculation methods tested were “direct” (combining bacterial culture and powder on a stainless-steel coupon) and “slurry” (premixing culture and powder). Matrices included …

Community Perceptions Of A Crisis Response Collaboration: A Community Survey Of Attitudes Towards Police And The Crisis Intervention Response Team., Meghan Anspach

Graduate Theses and Dissertations

This thesis examined community perceptions of the Fayetteville Police Department (FPD) and its Crisis Intervention Response Team (CIRT), focusing on how racial minorities and individuals from lower socioeconomic status (SES) backgrounds view these professionals and their roles in crisis situations. The research also aimed to determine whether perceptions of the collaborative effort through CIRT influenced views of the FPD. Previous research has explored perceptions of police, social workers, and co-response teams individually, but a gap remains in understanding how community members feel about the collaboration between police and social workers and whether these perceptions influence their views of the police. …

Sonic Subversion: An Intersectional Analysis Of South African Punk, 1976-Present, Amber Lenser

Graduate Theses and Dissertations

The 1970s in South Africa were plagued by systematic racial segregation, widespread political violence, and fervent censorship under the apartheid regime. Political tensions were rising precipitously in the final years of the decade, stoked by the brutal police response to the Soweto Uprising (1976) and the murder of Black Consciousness leader Steve Biko (1977). It was amidst this atmosphere of profound oppression and increasing political unrest that punk made its South African debut. Apartheid South Africa served as a fertile breeding ground for punk’s inherent culture of defiance and anti-authoritarianism. Remarkably, punk has demonstrated the power to transcend sociodemographic boundaries …

In Vitro And In Vivo Evaluation Of The Effect Of A Commercial-Dried Enterococcus Faecium Fermentation Product As Quorum Sensing Inhibitors Of Salmonella Enterica Typhimurium, Ileana Loeza

Graduate Theses and Dissertations

The purpose of the present research was to evaluate Enterococcus faecium fermentation peptides (EFP) for antibacterial activity, inhibition of biofilm formation, and anti-quorum sensing properties against Salmonella Typhimurium (ST) in in vitro trials and individual body weight and ST organ colonization in therapeutic and prophylactic models in broiler chickens. Ninety-six day-of-hatch Cobb 500 broiler chickens were randomized and assigned to one of four treatments: NC) Negative Control, no EFP treatment and no ST challenge; NC+EFP) Negative Control, EFP treatment and no ST; PC) Positive Control, no EFP treatment and ST challenge, and PC+EFP) EFP treated and ST challenged. Independent trials …

Experiences Of Black Senior Housing Officers At Predominantly White Institutions In The South, Christian M. Robinson

Graduate Theses and Dissertations

This study examines the lived experiences of Black Senior Housing Officers (SHOs) at predominantly white institutions (PWIs) in the Southern United States. This narrative inquiry study interviewed nine Black SHOs who worked at Southern PWIs. The findings of this study are that participants emphasized that racism remains a significant and present concern at their institutions as informed by Critical Race Theory (CRT). One participant stressed the importance of Black professionals fully understanding the historical context of the South when working in higher education, noting that this knowledge was critical for survival and success. Many participants also described how effective mentorship …

Sanctuary Of The Voiceless: Examining Tik-Tok As A Political Landscape, Quentin Key

Graduate Theses and Dissertations

While studies of social media as a political landscape often focus on established platforms like Twitter. They neglect emerging spaces like TikTok, the short-form video app, which has become an unexpected hub for political discourse. This study test Melissa Harris-Perry's "everyday talk" framework to analyze the political utility of this new digital space. Through analysis of 271 posts across TikTok, Twitter/X, and Truth Social, the research reveals how platforms simultaneously enable and constrain political discourse. Findings show verified accounts post political content 3.2 times more often than regular users, while political posts receive 167% more reposts, demonstrating how algorithms amplify …

The Effects Of Wwii Service On Black South African Soldiers, 1939-1950, Zachary Wilmoth

Graduate Theses and Dissertations

This thesis examines the experiences and motives of black South African soldiers who were a part of the Native Military Corps during the Second World War. It argues that these Black South African soldiers gained a growing sense of racial consciousness as a result of their service and corresponding experiences. In doing so, this thesis challenges previous historical interpretations of the Native Military Corps that have perpetuated the notion that Black veterans gained little political or racial understanding as a result of their service. Previous historians have predominantly relied on archival governmental records to substantiate their claims. However, such source …

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 …

Predicting Migrant Youth Integration In The United States, Scott Bayer Gove

Graduate Theses and Dissertations

The relationship between participation in an identity development program for migrant youth and their subsequent integration into U.S. society is examined. The study focuses on the U.S. Committee for Refugees and Immigrants' (USCRI) READY4Life program, which aims to support migrant youth in their transition to life in the United States. This study will examine whether performance scores in the READY4Life program can predict scores on the Immigration Policy Lab's (IPL) Integration Index, a validated measure of integration. The study will employ a cross-sectional experimental research approach, using multiple linear regression analysis to examine the relationship between the READY4Life performance scores …

Nonparametric Methods For Bayesian Community Detection In Complex Networks, Kedran Young

Graduate Theses and Dissertations

Network analysis is becoming an increasingly popular interdisciplinary area of study, with emerging interest in fields like sociology, biology, economics, and ecology. Within the niche of network analysis, capturing the community structure of a network is one important achievement that many statisticians have been working toward over recent decades. The most popular modeling technique for latent community detection is the Stochastic Block Model (SBM), which falls into the category of latent variable models and will serve as the baseline model throughout this thesis. SBM is widely regarded as the most effective community detection method as it detects latent community membership …

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 …

What's Love Got To Do With It? A Content Analysis Of Romantic Depictions In Tween Television Programming, Laura Workman

Graduate Theses and Dissertations

In the streaming era of entertainment, television programming is available at the touch of a fingertip to any pre-adolescent tween (those between the ages of 8-13) with a smartphone. Previous content analyses have examined romantic relationship content on television programming in a limited manner, covering mostly teen shows and sexual behavior, rather than tween shows and romantic relationship behavior. And so, despite the fact that tweens tend to use media as a socializing agent for learning acceptable romantic relationship norms, not much is known about how television programs likely watched by this age demographic are depicting romantic relationships. Therefore, it …

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 …

Influence Of Smartphone Notifications On Behavior And Eye Movement Parameters Of Emotional Attention, Joshua Daniel Upshaw

Graduate Theses and Dissertations

This study examined how smartphone notifications interact with emotional facial expressions to influence behavioral and physiological eye movement parameters of attentional orientation. Using a dot-probe paradigm, participants viewed mixed emotional face pairs (angry, happy, or neutral) following an auditory stimulus (smartphone notifications, control tones, or silence). Angry faces elicited greater behavioral accuracy and delayed initial fixations, consistent with heightened threat-related attentional engagement. Notifications disrupted attentional stability, reflected in increased fixations and pupil size variability. The combined effect of smartphone notifications preceding angry faces intensified attentional modulation—evidenced by slower responses, increased blinking, greater pupil constriction, less pupil variability, and faster initial …

Application Of Ordinal Regression Models To Acquired Stress Resistance In Wild Strains Of Saccharomyces Cerevisiae, Carson Stacy

Graduate Theses and Dissertations

This thesis explores the application of ordinal regression to the analysis of semi-quantitative growth assays often used when comparing fitness for different strains of the model yeast Saccharomyces cerevisiae. For stress survival assays, yeast stress resistance is measured using an ordered survival score that ranges from 0 (no growth) to 4 (confluent growth). Traditional approaches to analyze this type of data either treats data as a nominal categorical variable or as a continuous numerical variable. These approaches risk loss of information or violation of testing assumptions. In contrast, cumulative logit ordinal regression uses the information contained in the order …

Victims Of Stage And Screen: Parasocial Savior Rhetoric And Coded Social Critique At The Convergence Of Celebrity & Conspiracy Cultures, Amy Whiteside

Graduate Theses and Dissertations

This thesis offers a critical rhetorical analysis of what I term parasocial savior conspiracy theories , a unique genre of conspiracy narrative that portrays a public figure as victimized and allows their fans to step into a savior role through their advancement of the conspiracy theory. These narratives, I argue, are both catalyzed by and further insulative to a fan’s parasocial relationship with the public figure in question. Herein, the celebrity acts as a vessel of projection for their fans’ anxieties about control, allowing them to displace their agency panic onto a beloved external party and critique factors that seem …

Subsurface Characterization Using Electrical Resistivity Tomography (Ert) Integrated With Masw, P-Wave Refraction, And Boring Results, Mohammadyar Rahimi

Graduate Theses and Dissertations

Electrical resistivity tomography (ERT) has gained widespread application in geotechnical engineering as a non-invasive method for subsurface characterization. Despite its versatility, several challenges remain regarding its resolution capabilities, interpretive limitations, and integration with other investigative methods. This dissertation addresses three key applications of ERT, focusing on its effectiveness and limitations in resolving thin subsurface layers, detecting anomalies such as voids, and supporting environmental assessment in river restoration projects.

The first study investigates the ability of ERT to resolve thin, discontinuous clay layers beneath levees, using the Melvin Price Reach of the Wood River Levee on the Mississippi River as a …

Implications Of Acetylation And Phosphorylation On Metabolic Enzymes, Nour Fatema

Graduate Theses and Dissertations

All living things depend on glycolysis and the TCA cycle for energy production and metabolic control. Post-translational modifications (PTMs) such as acetylation and phosphorylation, which can change enzyme activity, substrate binding, and overall metabolic balance, tightly regulate these pathways. Diseases like cancer and metabolic problems are associated with disruptions in these alterations.

Serine phosphorylation and lysine acetylation are two of the many PTMs that are evolutionarily conserved processes that alter protein function. Previously thought to be a static histone alteration, acetylation is now understood to be a dynamic regulator of metabolic enzymes that modifies contacts, charge, and conformation. In response …

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, …

Women’S Participation In Homegrown And Domestic Terrorism Plots, Caroline Johnson

Graduate Theses and Dissertations

The 21^st century ushered in major social, political, and cultural changes in the United States, including a new era of homeland security and new forms of domestic terrorism. Little is known about how such shifts may have impacted women’s participation in terrorism plots. In response, data from the American Terrorism Study (ATS) are used to comparatively examine the involvement of women in homegrown and domestic terrorism plots before and after the 9/11 terrorist attacks. Findings of similarities and differences in women’s involvement in terrorism across time periods are presented and contextualized.

The Uneven Disruptions Covid-19 Caused To Scholars’ Publication: A Preregistered Study, Marco De Prosperis

Graduate Theses and Dissertations

This proposed, preregistered study investigates the uneven impacts of COVID-19 on scholarly productivity among University of Arkansas faculty, focusing on how demographic and professional factors—such as gender, ethnicity, academic rank, tenure status, field of study, and the presence of children—may have moderated productivity during the pandemic. Utilizing a non-experimental, cross-sectional design, this research will collect data from 160 full-time faculty members through an online survey. Grounded in Role Theory, the study will examine role conflict and enrichment as faculty navigated shifting responsibilities in research, teaching, and caregiving during remote work. This study is particularly relevant as many assistant professors who …