Digital Commons Network^™

Weather Permitting, Acadia Kandora

Graduate Theses and Dissertations

Weather Permitting is an exhibition of objects and printed matter, primarily in the form of publicationsthat examine my relationship to nature and the idea of nature as both sanctuary and armor. At a young age, my parents would take my on a hike every Sunday instead of going to church. The hikes acted as a weekly pilgrimage deep into the woods and a ritual instilling the idea of nature being a place of spiritual refuge and retreat. A sanctuary - of course, weather permitting.

As I grew up and experienced hardship, my first instinct has always been to go hide …

Optimistic And A Little Flawed, Christian Schultz

Graduate Theses and Dissertations

The accompanying exhibition to this paper, Optimistic and Flawed is a body of drawings and objects that explores the liminal space between playful and intended actions. Inspired by the landscape of the yard and the actions that take place within, the goalless play of a child and the laborious maintenance of an adult. The value of play exists within labor and labor exists within play. The drawings observe this through the theoretical framework of telic and paratelic motivational states as they relate to drawing. Abstracted yards and landscapes provide a space for the labor of the hand. A history of …

Experimental Design And Preliminary Testing For Skewed Special Moment Frame Prequalification, Sara Alimirzaei

Graduate Theses and Dissertations

Special moment frames having specially detailed connections are common in high seismic regions, providing architectural flexibility for passageways and views without brace obstructions. In situations where the building framing layout requires deviation from typical rectangular framing, skew in the moment frame connections may be required. Currently, the AISC prequalified connections only include testing of orthogonal moment frame connections and it is unclear whether the existing design methods can accommodate skew at the beam-to- column connections. To investigate the effect of out-of-plane skew on the performance of reduced beam section special moment frame connections, an experimental test is designed and a …

Managing Climate Change And Weather Extremes For Nature-Based Tourism Organizations In The United States, Siyao Ma

Graduate Theses and Dissertations

Weather and climate serve as profound motivators for tourism travels. Much of the United States (US) has experienced a warming trend as well as higher extreme weather frequency, and the trends are projected to be continued. Consequently, the changing climate is expected to have both direct and indirect impacts on tourism decision-making and travel patterns due to the complex relationship between climate, weather, and outdoor recreation. Climate resources capture the integrated effects of varied meteorological variables that interact with humans in different ways and can be categorized along a spectrum of quantifiable values. This dissertation proposed a Camping Climate Index …

Characterization, Incidence, And Epidemiology Of Two Novel Strawberry Rhabdoviruses, Ava Wait

Graduate Theses and Dissertations

Strawberry is the most important berry crop, grown in most temperate regions around the world. In the early 2000s and in 2012-2013, viral disease devastated strawberry production in California and Florida respectively; causing multimillion dollar losses. This occurred because viruses were moving in the field undetected. The modern strawberry (Fragaria x ananassa Duch.) is tolerant to single and double infections; yet when several viruses infect plants, symptoms as severe as plant death can occur. To prevent future epidemics, the use of virus-tested planting materials is essential. In 2019, rhabdovirus-like sequences were detected in strawberry using a combination of high-throughput sequencing …

Survey Of Ticks And Tick-Borne Pathogens Associated With Feral Swine (Sus Scrofa) In Arkansas, Haylee Campbell

Graduate Theses and Dissertations

Feral hogs (Sus scrofa L.) are an invasive species throughout the southeast United States and found in every Arkansas county. As feral hogs invade new habitat, they can disrupt ecosystems, damage agriculture systems, and bring ticks and tick-borne pathogens with them. There are no surveys of the tick species parasitizing the Arkansas feral hog populations or the pathogens they carry. This is a public health concern because feral hogs occupy often same geographical regions as humans and livestock and can harbor over 45 animal diseases and parasites. The ticks carried by feral hogs can carry tick-borne pathogens that can cause …

Quality Determinates Of Rice Price In Open Bag Markets In Sub-Saharan Africa, Bailey Peterson-Wilhelm

Graduate Theses and Dissertations

Weaknesses in the grades and standards system in low-income countries across Sub-Saharan Africa undermine the transparency of agricultural markets. In the Democratic Republic of the Congo (DRC), Ghana and Mozambique rice is predominately sold in open bags and if rice price does not reflect its quality, then inefficiencies may lead to consumer welfare losses. Importantly, it is possible that impoverished communities are priced out of the market due to inflated and inefficient prices. The objective of this study is to examine determinates of rice price by estimating the impact of selected rice quality attributes on rice prices in DRC, Ghana …

Ancestral Pursuits: A Multicultural Celebration Of Identity & Race, Charlotte Cates Castro

Graduate Theses and Dissertations

Using critical historical rhetorical methods along with critical race and decolonial theory, this project situates ancestral pursuits as a communication-centered discursive formation by investigating the rhetorical strategies modern biotech and genealogy companies utilize to influence contemporary discourse around identity and belonging and narrate ethnicity and genealogy as acts of consumption. Through direct-to-consumer DNA testing and complimentary services, modern day biotech and genealogy companies like Ancestry and 23andMe market personalized insights into ancestry, genealogy, inherited traits, and health data that promise to connect users to their past, as well as to situate them in present-day society, through a deeper understanding of …

Economic And Ecosystem Impacts Of Gm Maize In South Africa, Kristiina Ala-Kokko

Graduate Theses and Dissertations

White maize in South Africa is the only staple crop produced on a widespread commercial basis for direct human consumption using genetically modified (GM) cultivars. Using a combined economic and environmental approach, we estimate the total welfare benefits attributable to GM white maize in South Africa for 2001-2018 are $694.7 million. Food security benefits attributable to GM white maize in South Africa also manifest through an average of 4.6 million additional white maize rations annually. To achieve these additional annual rations using conventional hybrid maize, the additional land required would range from 1,088 hectares in 2001 to 217,788 hectares in …

A Tough Nut Never Boils: Thoughts And Ruminations On Language And Playmaking, Lauren Ferebee

Graduate Theses and Dissertations

After an unorthodox journey through higher education ending during the coronavirus pandemic, which has made the typical theatrical thesis production and subsequent typical final year impossible, the author reflects on the body of work she has created at the University of Arkansas as an M.F.A. candidate in playwriting at the Department of Theatre, how she has reached both deeper into her own discipline and outside of it to widen her understanding of liveness, performance, and textual creation. She interrogates her own unexpected experiences, from figuring out how to make theatre without theatres, to teaching students who have never seen a …

Design And Assembly Of High-Temperature Signal Conditioning System On Ltcc With Silicon Carbide Cmos Circuits, Sajib Roy

Graduate Theses and Dissertations

The objective of the work described in this dissertation paper is to develop a prototype electronic module on a low-temperature co-fired ceramic (LTCC) material. The electronic module would perform signal conditioning of sensor signals (thermocouples) operating under extreme conditions for applications like gas turbines to collect data on the health of the turbine blades during operation so that the turbines do not require shutdown for inspection to determine if maintenance is required. The collected data can indicate when such shutdowns, which cost $1M per day, should be scheduled and maintenance actually performed. The circuits for the signal conditioning system within …

Biopolymeric Materials For Tissue Regeneration, Cell Manufacturing, And Drug Delivery, David Alfonso Castilla-Casadiego

Graduate Theses and Dissertations

The development of materials for tissue regeneration, cell manufacturing, and drug delivery is possible by the manipulation of polymer properties and the use of three different techniques including layer-by-layer, electrospinning, and molding technique.

By applying the layer-by-layer technique over biomaterials, it is possible to develop polymeric multilayers that promote a more favorable environment for cellular functionality, increasing the possibility of improving their acceptance in the area of implantation. IRVASE demonstrated being a powerful technique that allows for a reliable characterization of the physical-chemical and thermal properties of the fabricated surfaces. This opens the possibility to monitor the design of surfaces …

Memory And Rememory: Critically Cultivating An Appropriate Response Through A Storied Approach To Listening, Katie W. Powell

Graduate Theses and Dissertations

This dissertation argues for a storied approach to listening from the perspective of a white Southern woman. To do this, I carefully followed the work of two community groups. One, the Washington County Community Remembrance Project, is working to install a marker venerating Aaron, Anthony, and Randall, three enslaved people who were lynched in our area in 1856. The other, the James H. Berry United Daughters of the Confederacy, is responsible for installing a Confederate statue on the Bentonville Square in 1908 that was removed in 2020. As illustrated by the use of archival research and embedded participation in interracial …

Economic Experiments On Conflict, Information Acquisition, And Public Goods, Jeffrey Braxton Gately

Graduate Theses and Dissertations

This dissertation contains essays on economic experiments. The first chapter, “Well, at Least I Tried: Partial Willful Ignorance, Information Acquisition, and Social Preferences,” focuses on the effects of information acquisition on social decision-making. The second chapter, “Paved With Good Intentions: Partial Willful Ignorance and Group Identity in Public Goods Games,” focuses on the effect of information acquisition on contributions to public goods. I also explore human conflict in the third chapter, “Risk Preferences and Reform Paths: Experimental Evidence.”

In my first chapter, “Well, at Least I Tried: Partial Willful Ignorance, Information Acquisition, and Social Preferences”, I investigate whether remaining partially …

Statistical Machine Learning For Breast Cancer Detection With Terahertz Imaging, Tanny Andrea Chavez Esparza

Graduate Theses and Dissertations

Breast conserving surgery (BCS) is a common breast cancer treatment option, in which the cancerous tissue is excised while leaving most of the healthy breast tissue intact. The lack of in-situ margin evaluation unfortunately results in a re-excision rate of 20-30% for this type of procedure. This study aims to design statistical and machine learning segmentation algorithms for the detection of breast cancer in BCS by using terahertz (THz) imaging. Given the material characterization properties of the non-ionizing radiation in the THz range, we intend to employ the responses from the THz system to identify healthy and cancerous breast tissue …

Testing Spiral Density-Wave Theory In Disk Galaxies Using Multi-Wavelength Image Data, Star Formation History Maps And Spatially Resolved Stellar Clusters, Mohamed Shameer Abdeen

Graduate Theses and Dissertations

Studying galaxy structures using different wavebands enables us to observe a varietyof intrinsic galactic features and to test the validity of underlying theories in detail. Density wave theory, originally proposed by C.C. Lin and F. Shu (Lin & Shu 1964), explains the nature of the spiral arm patterns in disk galaxies as density waves that propagate through the galactic disk. From spiral galaxies to the rings of Saturn, density wave theory has had success in providing qualitative explanations of disk dynamics. However, it is now widely believed that galactic disks are dissipative systems which raises the question of whether they …

Values And Success In Collegiate Athletics, Nathan Shelby Hutchens

Graduate Theses and Dissertations

The rapid commercialization of intercollegiate sports has changed the landscape of the hiring decisions and methodologies within university-associated athletic departments – especially within the Division I Football Bowl Subdivision (DI-FBS) (Wong, 2017). Most notably and recently, the strategies used to hire athletic directors (ADs) have underwent considerable revision – yet successful hires are far from a sure thing. Many strategies include allusions to leadership style, yet leadership styles are as numerous as there are researchers who study them – and are rarely implemented holistically, thus making their assessment and associated outcomes tenuous at best (Peachey et al., 2015). Hambrick and …

Envisioning A New Pakistani Home: Gender, Class, And Identity In Women’S Urdu Journals, 1947-1960, Mehreen Jamal

Graduate Theses and Dissertations

The women’s journals published in Urdu during the first decades of Pakistan were vital to understanding the middle-class aspirations for a new national identity, since independence raised concerns among the dutiful citizens for the reformation of the new society, particularly concerning private lives. The writers and readers of these journals belonged to a generation whose lives and ideas had been formed by the Muslim reform literature of late nineteenth and early twentieth centuries. From the independence of Pakistan in 1947 to roughly the 1960s, writers in women’s journals engaged in refashioning the ideas of a new Pakistani middle-class respectability, foreseeing …

Evaluation Of Nutritional Factors That Influence The Efficacy Of Tributyrin As A Feed Additive For Broilers, Brooke Bodle

Graduate Theses and Dissertations

Tributyrin (TB) is a glyceride ester of butyrate that has the potential to improve broiler performance and intestinal development. Therefore, to fully evaluate this potential, three experiments were conducted to evaluate effect of tributyrin (TB) on broiler growth performance, nutrient digestibility, carcass characteristics, intestinal morphology, and gastrointestinal function in birds fed diets varying in composition reared in battery cages and floor pens. Experiment 1 explored the supplementation of graded doses of TB and its impact upon growth performance, nutrient digestibility, and carcass characteristics in a step-down program when added to a reduced energy and amino acid diet. A linear reduction …

The Double Edge: Contradictory Functions Of Civil Society Organizations In The Tunisian Democratic Process, Dhia Ben Ali

Graduate Theses and Dissertations

“Democratic transition,” the act of becoming democratic, and “democratic consolidation,” the subsequent actions that solidify the achievement of becoming democratic, are two separate processes that go hand in hand. While several Arab Spring nations overthrew their dictators, fewer underwent a democratic transition, and only one – Tunisia – achieved democratic consolidation (Bouchlaghem and Thepaut, 2019; Sadiki, 2019; Gianni, 2019). Tunisia constitutes the sole Arab Spring country to have: 1) created and adopted a new constitution; 2) formed and institutionalized political parties that peacefully share power; and 3) achieved multiple rounds of free and fair elections (Al-Anani, 2014; Yerkes, 2019). Scholarly …

Still Dreaming Of You: Selena's Discourse With And Continuing Impact On American Musical Culture, Hannah Lastra

Graduate Theses and Dissertations

Selena Quintanilla Perez continues to circulate in popular culture, including MAC cosmetic lines, a Netflix series, and podcasts. As a result, her cultural influence continues to be passed on and shared with future generations. This thesis focuses on three aspects of Selena and Selena y Los Dinos: Selena’s music, Selena’s performance aesthetic, and Selena’s fandom today. Chapter 1 focuses on Selena y Los Dinos’ American musical influences, particularly studying the songs “Enamorada de ti,” “Missing my Baby,” and “Fotos y Recuerdos” and the presence of American genres of new jack swing, R&B, and rock within them. Chapter 2 focuses on …

Disgust Versus Anger-Relevant Trauma Analogues: Associations With Affect And Disclosure Behavior, Teah-Marie Bynion

Graduate Theses and Dissertations

Due to high prevalence rates of sexual assault experienced by college-aged women, it remains important to consider factors associated with negative posttraumatic outcomes (e.g., posttraumatic stress disorder). One factor consistently linked to negative outcomes following sexual assault is elevated peri- and posttraumatic disgust. Particularly, when such feelings are self-focused, peri- and posttraumatic disgust is linked with feelings of dirtiness (mental contamination). The current study extends this line of research to disclosure behavior. Disclosing a sexual assault to another person can be beneficial, however many survivors will never disclose. Theoretical accounts suggest that specific feelings associated with a sexual assault may …

Recovering From Substance Abuse In Arkansas: The Accessibility And Affordability Of Drug Treatment Programs, Whitney King

Graduate Theses and Dissertations

This thesis is going to examine how people recover from drug addiction and see if there are any similarities due to their socioeconomic statuses at the time of recovery. This research addresses the following questions: How accessible and affordable are drug addiction recovery programs and rehabilitation facilities in Arkansas for mid- to low-income individuals? What are the social costs for people who can’t obtain drug rehabilitation services? The goal of this research is to explore whether there is a lack of affordable recovery programs in the state of Arkansas. This project utilizes survey responses as well as in-depth interviews with …

Evaluating The Effects Of Wood Source On The Physicochemical Properties Of Crosslinked Cellulose Nanocrystals, Helena Tchoungang Nkeumen

Graduate Theses and Dissertations

Cellulose is an abundant and naturally occurring biopolymer that has been used by humans for food, shelter, and clothing for about two centuries now. Highly crystalline nanoparticles derived from cellulose, called cellulose nanocrystals (CNCs), show great potential to meet the rising need for sustainable and nontoxic materials for biomedical applications. However, multiple biomedical applications of CNCs, such as those involving their use in tissue engineering scaffolds, require CNC-based structures to be stable in aqueous environments, a property that native CNCs do not possess due to their inherent hydrophilicity. Chemical crosslinking of CNCs addresses this issue by providing aqueous stability to …

Distress Tolerance As A Potential Target For Change: The Relationship Between Distress Tolerance, Craving, And Alcohol Consumption In A Lab-Based Experiment, Isabel F. Augur

Graduate Theses and Dissertations

Distress tolerance (DT) has recently been studied as a potential catalyst for the development ofalcohol use disorder (AUD). Research exploring the relationship between DT and craving is limited and has primarily focused on nicotine craving. Furthermore, there are no current studies examining the relationship between DT and alcohol consumption. This study was designed to fill this gap in the literature, which may shed light on a potentially important target for alcohol use treatment. Additionally, the role of mindfulness was explored in the context of the relationship between DT and alcohol craving and consumption, with the intention of expanding on the …

Faith-Based Education And Civic Value Formation, Matthew H. Lee

Graduate Theses and Dissertations

Since the founding of the United States, scholars and policymakers have argued that education should not merely train the minds of students, but also prepare them for active participation in a democratic republic. This dissertation, divided into three chapters, studies the leaders, schools, and content that shape students’ character.

While educational leadership in U.S. public schools is widely studied, there is much less scholarly attention to educational leadership in Protestant and other private schools. The first chapter investigates principal leadership and tests for systematic differences in educational priorities and preparation for their responsibilities by educational sector. Using a nationally-representative sample …

Analyzing Purchase Behavior For Domestic And Imported Dry Wines In The U.S. Market Using Panel Data, Nadica Koskarovska

Graduate Theses and Dissertations

The objective of this study is to explore wine purchase behavior in the United States market, including different off-premise channels using AC Nielsen panel data and wine prices and rankings from the Wine Enthusiast database of wine reviews. The purpose of this thesis is to identify factors that impact customer loyalty to retail wine brands. In so doing my goal is to provide information that can be used to improve marketing efforts of small wineries that are seeking to grow into mainstream retail formats. The results suggest that efforts to build brand equity will be more successful if the brand …

Description Of Job Embeddedness In Arkansas County Extension Agents, Anika Parks

Graduate Theses and Dissertations

The Cooperative Extension System (CES) has had a long-standing problem with the retention of its county Extension agents (CEAs), who are in charge of running various programs in over 3,000 counties within the United States. When a CEA leaves a county, voluntarily or involuntarily, the community members are left without that leader, and their needs go unmet, which was proposed to increase voluntary turnover among CEAs even further. Arkansas CES has had its problems with turnover, and studying this issue through the lens of Job Embeddedness Theory was identified as a gap in the literature.

Job Embeddedness Theory is a …

A 3-Dimensional Approach To Projectile Point Classification, Kayden Dennis

Graduate Theses and Dissertations

Typologies have long been used by archaeologists to answer questions about the past, ranging from issues of site chronology to tool function. However, current methods are hampered by subjective misclassifications as well as a loss of the range of variability among different tool forms due to a process that forces them into singular types. This thesis looks to create a simple and reliable technique of projectile point classification. It is also the author’s goal to use a classification system that monitors cultural transmission over time. This objective is addressed with an Archaic projectile point sequence from the Albertson site in …

Understanding Gender Gaps In Student Achievement And Stem Majors: The Role Of Student Effort, Test Structure, Self-Perceived Ability, And Parental Occupation, Lina Anaya Beltran

Graduate Theses and Dissertations

Increasing women’s participation in Science, Technology, Engineering, and Mathematics (STEM) has become a policy goal for many countries. This dissertation focuses on the origin and measurement of gender gaps in student achievement and self-perceived ability, as well as their potential role in predicting college career choices in STEM.

The first two chapters provide an international overview of gender achievement gaps and focus on issues around measurement using data from the Programme for International Student Assessment (PISA). These chapters study the role of student effort in predicting gender gaps in achievement and whether or not test structure, defined as question difficulty …