Digital Commons Network^™

Utility Of John Deere's See & Spray Ultimate In Southern U.S. Row Crops, Tristen Avent

Graduate Theses and Dissertations

Row crop producers across the southern United States are observing a boom in technological advancement to improve operational efficiency. Additionally, environmental concerns and reduced profit margins drive the adoption of targeted pesticide application technologies like the John Deere See & Spray. This technology is relatively new, introduced in 2022, and producers need more insight into the shortcomings, potential herbicide savings, and the economic benefits of adoption. Since 2021, research has been conducted in Keiser, AR, with additional collaborative projects in Mississippi, North Carolina, Indiana, and Illinois. Five different objectives were addressed in this research: 1) to determine the impact of …

The Relationship Between Attention Deficit Hyperactivity Disorder And Problematic Internet Usage In Lgbtq+ Adults, Kayli Nicole Heigelmann

Graduate Theses and Dissertations

This thesis explores how LGBTQ+ adults who experience attention deficit hyperactivity disorder (ADHD) symptomology perceive and navigate potential problematic Internet usage (PIU). Utilizing a qualitative, phenomenological approach, twelve participants were interviewed to gain insight on how neurodivergence, queer identity, and Internet engagement intersect. Findings revealed two overarching themes: 1) the interplay between PIU, ADHD, and sexual/gender diversity, and 2) the meaning of the Internet for individuals with intersecting minority identities. Participants widely endorsed the Internet as an important space for identity negotiation, community, and affirmation for their multiple minority statuses, but acknowledged their vulnerability to the Internet’s attention-capturing mechanisms, reporting …

Gene Expression And Transfection Of C15orf57 In Chicken Show Clear Correlation To The Function Of The Ap2 Complex, E. Ashton Magdich

Graduate Theses and Dissertations

Discovering the functions of functionally unknown genes has made a huge impact on biological understanding including poultry species. In this thesis, C15orf57 (or C5H15orf57, chicken chromosome 5 human ortholog H15 open reading frame 57), was studied to understand its genetic characteristics and function. Chapter one is literature reviews on annotation of genes, the gene information on C15orf57, the importance of characterizing unknown genes in the genome, and what is known now about C15orf57. The Chapter 2 is for the structural characterization of C15orf57, gene expression of C15orf57 in various organ tissues using the qPCR method and effect of overexpression of …

A Case Study Of Intercultural Competence And Perceived Career Coaching Effectiveness In Higher Education, Robert C. Ellis

Graduate Theses and Dissertations

As the cost of a college education continues to increase dramatically, both policymakers and the general public have begun to question the return on investment in higher education. In response, post-secondary institutions have substantially invested in their career development offices in an effort to improve graduate career outcomes. Among the most widespread of the career services offered to college students is career coaching, which the literature supports as having a substantial impact on increasing starting salaries and job offers for new college graduates. Despite being more likely than their peers to utilize their institution’s career development offices, college graduates belonging …

In Search Of Real Truth And Accurate History: Protecting And Resisting Whiteness In Education Policy Discourse, Rachel Piontak

Graduate Theses and Dissertations

This research examines whiteness in education policymaking through a three-article dissertation, contributing to the broader understanding of how whiteness manifests across education policy and legislative discourse. The first article presents a comprehensive scoping review of critical whiteness studies (CWS) in education policy research. Using CWS tenets such as whiteness as property and colorblind racial ideologies, the analysis identifies themes of manipulated discourse, the economics of whiteness in education, and the protection of whiteness. This study anchors the second and third studies, which examine whiteness ideologies at play within the education policymaking discourse of the American Southeast. The second article addresses …

Meeting The Challenge: The Relationship Between Students’ Educational Gains And Teacher Full-Time Versus Part-Time Status, Dorissa Kaufman

Graduate Theses and Dissertations

This study investigates the effect of instructor status—full-time versus part-time—on student Educational Functioning Levels (EFLs) in adult education centers across Arkansas from 2018 to 2023. Given that funding for these centers is directly tied to student performance, determining the most effective type of instructor is essential. The research examines programs like GED, English Language Learners (ELL), Integrated Education and Training (IET), and Workforce Alliance for Growth in the Economy (WAGE), addressing challenges such as a high number of adults without high school diplomas. Employing a regression model for analyzing EFL gains, the study seeks to provide actionable insights for hiring …

Investigating The Impact Of Gear Up Arkansas On College Readiness And Post-Secondary Enrollment In The Delta, Erika Mcmahan

Graduate Theses and Dissertations

This study evaluates the impact of the Gaining Early Awareness and Readiness for Undergraduate Programs (GEAR UP) Arkansas initiative on improving college readiness and postsecondary enrollment among low-socioeconomic status (SES) students in the Arkansas Delta, a region marked by systemic educational inequities and persistent poverty. Framed by Opportunity Gap Theory, this quantitative, quasi-experimental research addresses two questions: (1) How does GEAR UP participation influence postsecondary enrollment compared to nonparticipants? (2) Do participants achieve higher ACT scores than nonparticipants? Using data from 491 students across high-poverty schools, the study employs logistic regression to assess enrollment rates and multiple regression to analyze …

Only You Can Prevent The Apocalypse: Donald Trump, The Environmental Movement, And Egotism At The Brink, Gregory A. Griffin

Graduate Theses and Dissertations

This thesis explores the rhetorical style termed 'Apocalyptic Egotism,' focusing on its manifestation in American political discourse and environmental activism. By analyzing the rhetoric of Donald Trump and prominent climate advocates, including Al Gore, King Charles III, David Wallace-Wells, and Greta Thunberg, the study identifies four key stylistic elements: imminent crisis, historical insulation, epistemic certainty, and hyperbolic agency. The analysis reveals how this rhetorical style represents a distinct departure from traditional apocalypticism and perpetuates Anglo-centric power structures and marginalizes non-Western voices, with significant implications for understanding race, rhetoric, and global inequality in the context of modern crises. The thesis concludes …

Comparison Of Airborne Lidar-Derived Elevation Data In Fayetteville, Arkansas, Usa, Angelica M. Otting

Graduate Theses and Dissertations

Light detection and ranging (lidar) laser scanners are prominent remote sensing tools to produce high resolution three-dimensional (3D) imagery of the Earth’s surface. These laser scanners combined with global navigation satellite systems (GNSS) and real-time kinematic (RTK) reference stations can generate some of the most accurate ground surface imagery and elevation data for terrain mapping and related applications. Lidar aerial survey is an important tool in industries such as architecture, civil engineering, forestry, geology, geography, and agriculture where digital terrain models (DTMs) can be used to examine the geographical landscape and urban industry. Currently, there are three different common laser …

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 …

Synthesis And X-Ray Characterization Of Nickel Phosphide Nanostructures For Water Oxidation, David Thompson

Graduate Theses and Dissertations

The pursuit of earth-abundant 3d transition metal catalysts for alkaline water electrolysis remains an active area of research. While NiFe layered double hydroxides (LDH) are currently the most active catalysts for the oxygen evolution reaction (OER), doping Ni-based catalysts with phosphorus to form Ni metal phosphides has emerged as a promising alternative. However, the complex crystalline and amorphous phases of NiP_x have hindered their characterization, and the OER mechanism and origin of activity remain unclear. This dissertation aims to elucidate the synthesis, OER performance, and in situ reconstruction of amorphous NiP_x-based nanomaterials, with a focus on in …

Analog Low Dropout Regulator Design Within A 12nm Finfet Node, Harshdeep Singh

Graduate Theses and Dissertations

Modern ICs require the use of multiple voltage regulators to regulate power, this creates the need for analog low dropout regulator (LDO) designs in more advanced nodes such as for the 12nm FinFET process. Analog design is particularly challenging in FinFET processes due to a variety of factors, such as quantized parameters, large parasitic values and length of diffusion effects. An analog LDO was chosen for its improved power supply rejection ratio (PSRR) over digital and hybrid approach which is a key metric for voltage sensitive applications. The LDO was designed through an iterative approach to address the difficulty of …

Real-Time Anomaly Detection In Ot Networks Using Gru-Based Autoencoders, Grant Austin Wilkins

Graduate Theses and Dissertations

Operational Technology (OT) networks, particularly those used in critical infrastructure, face increasing cyber threats that target network-level protocols and behaviors. While most anomaly detection research for OT systems has traditionally relied on sensor data, this thesis explores the viability of detecting malicious activity directly from network telemetry. We propose a sequence-to-sequence autoencoder model based on Gated Recurrent Units (GRUs) with multilevel attention, trained to reconstruct normal patterns of packet-level communication extracted from raw PCAP data. The developed feature engineering pipeline integrates general networking attributes such as IP and MAC addresses, ports, and transport protocols with OT-specific protocol information from Modbus …

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. …

The American Lowrider As A Form Of Art, Chad Johnson

Graduate Theses and Dissertations

This paper argues that lowriders, a style of heavily customized vehicle deeply rooted in Chicano culture, ought to be recognized as a legitimate American art form. After establishing the historical and cultural background of lowriders, this paper identifies a cluster of essential aesthetic features which define lowriders, such as lowered suspension, custom wheels, elaborate paintwork, and opulent interiors. Several paradigmatic lowriders exhibiting these features are then examined against the background of various philosophical definitions of art. The analysis demonstrates that lowriders with their elaborate body modifications and paintwork do align with the essentialist views such as Clive Bell’s formalism and …

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 …

The Rhetorical Use Of The Lower Classes In Three Primary Accounts Of The First Crusade, John Hannon

Graduate Theses and Dissertations

This study analyzes the rhetorical use of the lower classes in three primary accounts of the First Crusade: Albert of Aachen, the Gesta Francorum, and Raymond of Aguilers — specifically with an eye towards the proper maintenance of the order of society through everyone performing their assigned role. Through a close reading of these three texts this study demonstrates how the three authors engage with and uphold versions of the idealized three orders model of medieval society. Though there is nuance between each source, broadly, each of the authors presents the lower classes as a force that needs to …

Atomic Level Characterization For The Transport Cycle Conformational Pathways Of Multidrug Resistance Protein 1 (Mrp1), Samuel Wamwere Mwatha

Graduate Theses and Dissertations

The multidrug resistance-associated protein 1 (MRP1/ABCC1) is an ATP-binding cassette (ABC) transporter that mediates the cellular efflux of endogenous and xenobiotic substrates, including therapeutic drugs. Its overexpression is a major contributor to multidrug resistance in cancer, which tends to result in negative clinical results. Even with considerable progress made in structural biology, the intricate details of how membrane lipid composition affects the conformational changes and functional switches of MRP1 still lack explanation.

This thesis employs long-timescale, all-atom molecular dynamics (MD) simulations to study the influence of various lipids on MRP1 lipid bilayer environments. Both inward-facing and outward-facing conformations of MRP1 …

Sibling Groups And Family Adaptability And Cohesion Among Emerging Adult Women, Julianne M. Post

Graduate Theses and Dissertations

This study examined how sibling group size is related to family adaptability, cohesion, and individual resiliency outcomes during emerging adulthood. Using Bowen's Family Systems Theory and Olson's Circumplex Model, the research investigates sibling subsystems as sites where systemic imbalances are first experienced within families. Data from 124 college students revealed that larger sibling groups were associated with marginally higher disengagement and chaos resulting in decreased perceived social support, suggesting resiliency implications for youth growing up within larger families. While sibling size didn't directly predict mental health, family dynamics significantly mediated the relationship between sibling composition and resiliency outcomes. Demographic factors …

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 …

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. …

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 …

Perceiving School Success: A Phenomenological Study Of Asian Indian Parents, Scott Nozik

Graduate Theses and Dissertations

This phenomenological qualitative study aimed to explore how Asian Indian parents at East Ridge Elementary School perceived student success. The research sought to understand their experiences, their views on student success, and the factors they perceived as supports or barriers to achieving that success. Interviews with 14 Asian Indian families revealed four major themes: Positive School Experiences, Academic Programming, Holistic View of Education, and Parental Engagement. While communication emerged as a central element, it was not categorized as a theme but rather as a supporting factor. The study found that parents expressed satisfaction with the school’s cultural inclusivity and sense …

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 …

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 …

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 …

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 …

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 …