Digital Commons Network^™

Mining For Biological Control Agents Against B. Glumae, The Causal Agent Of Bacterial Panicle Blight Of Rice., Katherine Anne Wilkinson

Graduate Theses and Dissertations

Burkholderia glumae is the causal agent of the emerging disease, Bacterial Panicle Blight of rice, a serious disease that can significantly decrease yield and poses a threat to rice production worldwide. This thesis is concerned with searching for a biological control agent to control this disease. Plant associated microbes are a good source of beneficial bacteria which can be exploited for use as a biological control agent. It is possible that the microbiomes of cultivars which are known to be more resistant to plant pathogens may contain more microbes which inhibit those pathogens and therefore could be used as biological …

Seeing Through Feeling, Christopher Mitchell Rodgers

Graduate Theses and Dissertations

The purpose of this paper is to describe both the inherent formal qualities and conceptual framework that are addressed within the exhibition, Seeing Through Feeling. The exhibition is centered around the methodology of making, collection, and display all through the one singular positioning, the object. The objects within the exhibition are either handmade or collected fragments that weave together around the singular position of craft and history under the pretense of how our understanding of time may not always be true. The thesis breaks down key components through specific themes into the categories of the hand, eye, symbol, object, value, …

Give Up The Ghost, Hannah T. Mcbroom

Graduate Theses and Dissertations

Give Up the Ghost is a series of six paintings created in Fall 2018 and Spring 2019. The paintings are an introspective examination of transgender subjectivity in visual narrative.

In this paper, I separate the personal and research through first and third person, similarly to how I separate imagery and mark making in my paintings. The paper is broken up into a description of the project, the history and theory which informs the work, and why painting is used to describe bodies and spaces.

Give Up the Ghost refers to giving up social expectations as determined by gender. The paintings …

Good Dyke Art, Sam M. Mack

Graduate Theses and Dissertations

The work in good dyke art visually expands upon conversations about institutional critique and its contradictions, specifically questioning who dictates the boundaries between institutions and bodies: how divisions are made between them and who enacts or receives force. One’s participation in this critique, however, indicates a participation in the problematics of the institution and by extension, a desire to critique may also be considered a desire to participate in that system.

Ceramic, glaze, and found objects manifest an allegorical formalism that utilizes coded languages of institutional spaces, traditions of queer-coding, and charged word-play. The ceramic vessel forms reference the Ancient …

An Echo From The Living Room, Makayla Nichole Songer

Graduate Theses and Dissertations

We are unable to interface with reality as it is. Everything that encompasses our understanding of reality and ourselves—from our physical perceptions to our memories—are subject to innate flaws that make a complete grasp of reality impossible. an echo from the living room is invested in the idea that reality itself is malleable, taking influence from altered states of reality such as dreams, nightmares, and memory. Drawing from the personal experiences of recurring nightmares and living in a haunted house, as well film, the uncanny, and the multiple, an echo from the living room strives to create space for these …

Predicting The Mechanical Properties Of Nanocomposites Reinforced With 1-D, 2-D And 3-D Nanomaterials, Scott Edward Muller

Graduate Theses and Dissertations

Materials with features at the nanoscale can provide unique mechanical properties and increased functionality when included as part of a nanocomposite. This dissertation utilizes computational methods at multiple scales, including molecular dynamics (MD) and density functional theory (DFT), and the coupled atomistic and discrete dislocation multiscale method (CADD), to predict the mechanical properties of nanocomposites possessing nanomaterials that are either 1-D (carbyne chains), 2-D (graphene sheets), or 3-D (Al/amorphous-Si core-shell nanorod).

The MD method is used to model Ni-graphene nanocomposites. The strength of a Ni-graphene nanocomposite is found to improve by increasing the gap between the graphene sheet and a …

The Role Of Inter-Particle Behavior In Iron Oxide Nanoparticle Induction Heating, Hayden Seth Carlton

Graduate Theses and Dissertations

Due to their multi-functional nature, iron oxide nanoparticles present themselves in a myriad of scientific disciplines, but perhaps the most interesting property of these nanomaterials can be seen in their immense thermal response under the influence of alternating magnetic fields. Currently popularized as an alternative cancer treatment through localized hyperthermia, iron oxide nanoparticle induction heating presents an interesting physical phenomenon that distinguishes itself from macroscopic induction heating. Understanding how a single spherical particle behaves is relatively simple and remains well documented; however, magnetic interactions of a single particle often extend over many length scales, affecting numerous neighboring particles in the …

Investigating The Connection Between Light, A Circadian Clock, And Pathogenesis In Cercospora Zeae-Maydis, John Byron Ridenour

Graduate Theses and Dissertations

Gray leaf spot is a globally important foliar disease of maize caused by the fungus Cercospora zeae-maydis. In C. zeae-maydis, light is a critical environmental signal linked to pathogenesis and secondary metabolism. However, the mechanisms by which the fungus senses and responds to light are not fully understood. Thus, the overarching goal of this project was to unravel the connection between light and pathogenesis in C. zeae-maydis. The conserved fungal protein White Collar-1 (WC-1), designated Crp1 in C. zeae-maydis, senses light and initiates physiological responses. In fungi, WC-1 functions in the White Collar Complex via interaction with White Collar-2 (WC-2). …

Zitrone, Chase Roy Young

Graduate Theses and Dissertations

The purpose of this thesis paper is to describe the elements and narrative associated with the exhibition, Zitrone, as well as the conceptual and theoretical ideas influencing the work. The exhibition is centered around an invented singular historical object in the form of a vehicle, and a museum display of artifacts, documents, and recreations intended to validate the existence of the central subject. Drawing on the work of artists Marcel Broodthaers, Damien Hirst, and David Wilson in conjunction with theoretical writings of Dave Hickey and Lewis Hyde, the exhibition seeks to address the perception and presentation of history as absolute …

Validity And Reliability Of A 5-Minute Web-Camera Based Eye Tracking Test To Assess Visual Memory And Cognition, Emily Bates

Graduate Theses and Dissertations

There are approximately 5.7 million Americans currently living with Alzheimer’s Disease (AD). Early detection of cognitive impairment allows for earlier treatment, potentially slowing or halting cognitive decline. A 30-min web-camera eye tracking assessment (30-min VPC) has been validated as a tool to predict AD risk. However, a shorter version would allow for greater scalability and improve user experience. The purpose of this study was to: 1) determine the validity of the 5-minute web-camera based VPC test with the 30-min test, 2) determine the test-retest reliability of the 5-min test, 3) compare the 5-minute test scores of cognitively intact adults (18-39 …

Master’S-Level Counseling Students’ Experience Of Expressive Arts Techniques In A Cacrep Multicultural Counseling Course, Cameron Houin

Graduate Theses and Dissertations

Counseling governing bodies have defined what should be prioritized in multicultural counseling courses, including students’ multicultural knowledge and awareness; however, best practice regarding how to teach these multicultural concepts has largely been left up to the counselor educator. Counselor educators have begun implementing expressive arts techniques in the classroom, but very little literature exists related to using such techniques in a multicultural course in a manner that positively influence counseling students’ multicultural competency.

The purpose of this study was to explore master’s-level counseling students’ experience of expressive arts techniques utilized during their multicultural counseling course. Ten student participants took part …

Positioning Of English Language Learners And Its Power On Classroom Learning Opportunities And Interactions, Hawraa Nafea Hameed Alzouwain

Graduate Theses and Dissertations

In this qualitative study, the researcher investigated four aspects of positioning used by teacher and ESL students in a mid-south state of the United States. This study was based on the Positioning Theory of Davies and Harré (1990). The study aimed to explore various types of positioning used by the participants and how they impacted social interactions among the students and between them and their teacher. The researcher used four questions to outline the scope of the research, focused on: 1) how ELLs’ different positioning in the ESL classroom promoted or limited their learning opportunities; 2) how the ELL teacher …

Reducing The Risk: Psychological And Technological Approaches For Improving Handwashing Practices In The Foodservice Industry, Jeffrey Allan Clark

Graduate Theses and Dissertations

As Americans are spending greater portions of their dollar on food consumed outside the home, the foodservice industry plays more of an integral part of daily existence compared to previous generations. Given the numerous annual foodborne illness outbreaks that threaten human lives while undermining confidence in the food supply, food safety is a pertinent issue for industry stakeholders, government regulators, and consumers. Food worker handwashing reduces the risk of foodborne illness transmission, yet compliance with this simple behavior is a complex problem. This dissertation addresses, predominantly, the issue of sub-optimal handwashing practices through applying psychology and technology, including wearable computers …

Identifying Predictors Of Organizational Commitment Among Community College Faculty Members In Arkansas, Chris Aaron Lorch

Graduate Theses and Dissertations

Community colleges serve an important function of allowing students to achieve an affordable education closer to home. However, these opportunities often challenge community college faculty members due to smaller budgets and resources, which leads to differentiation in curriculum delivery, underprepared students, increasing workloads, and increasing stakeholder expectations. As such, across the nation, faculty are showing lack of commitment, lowered engagement, and increasing turnover rate. This study sought to determine the predictors of organizational commitment in community college faculty, using Meyer and Allen’s framework of three components of this commitment. Both individual demographic characteristics of faculty, and institution characteristics of degree …

Familiarization Through Ambient Images Alone, Nia Imani Gipson

Graduate Theses and Dissertations

The term “ambient images” has begun to show up in much of the current literature on facial recognition. Ambient images refer to naturally occurring views of a face that captures the idiosyncratic ways in which a target face may vary (Ritchie & Burton, 2017). Much of the literature on ambient images have concluded that exposing people to ambient images of a target face can lead to improved facial recognition for that target face. Some studies have even suggested that familiarity is the result of increased exposure to ambient images of a target face (Burton, Kramer, Ritchie, & Jenkins, 2016). The …

Socially Constructing Marijuana Policy And Target Populations In The News Media, Jonathan Taylor Langner

Graduate Theses and Dissertations

This research focuses on different aspects of the co-construction African Americans and marijuana in the news. First, the historical background of modern drug laws, including marijuana prohibition, and how this was dependent on racialized fears in the wake of the abolition of slavery. Next, the prevalence and variety of marijuana constructions in a national newspaper, with careful attention paid to associations with racial identifiers. Finally, how African American athletes and marijuana are co-constructed in an exemplary article.

Chapter 2 describes how racial fears relate to the social construction of disadvantaged population in the media. We first describe the current situation …

Advanced Statistics In Arkansas Sports Reporting, Andrew Lee Epperson

Graduate Theses and Dissertations

This study seeks to analyze how Arkansas’ sports journalists are adapting to the recent surge in available advanced statistics that are being used by certain national news organizations. Using in-depth qualitative research that includes in-depth interviews with a number of individuals in the print, broadcast, and athletics side of sports coverage, we discover how journalists and coaches use these next-generation analytics, what they fundamentally mean for the evolution of each respective path, and why so few Arkansas reporters and writers use them at the time of this paper’s defense. We see how budgets and deadlines restrict the use of these …

Evaluating The Effectiveness Of Motor Planning With Core Vocabulary: A Behavior Analytic Account, Alison Judith Karnes

Graduate Theses and Dissertations

As the prevalence of autism spectrum disorders (ASD) increases, it is important for practitioners to continue to improve evidence-based practices (EBP) for the treatment of ASD symptoms (i.e., impairments in social communication and repetitive behaviors and restricted interests; American Psychiatric Association [APA], 2013). It is estimated that 30-50% of individuals with autism do not acquire functional speech (Wodka, Mathy, & Kalb, 2013). These individuals would make appropriate candidates for Augmentative and Alternative Communication (AAC; Mirenda, 2003). One form of AAC is the speech-generating device (SGD). Over the last ten years, tablet-based technologies including iPad minisⓇ have been emphasized in the …

Examining The Phenomenon Of Elementary School Principal Succession Through The Perspectives And Experiences Of Novice Principals, Dayna Kay Lewis

Graduate Theses and Dissertations

School districts across the United States are confronted with a shortage of highly qualified principal applicants, a situation compounded by a haphazard approach to leadership succession planning. While the vast majority of principals and superintendents endorse the promotion of assistant principals as the most effective way to develop successful school leaders, few structures exist to support that endeavor. Despite their essential role in the school’s operations and escalating demands for accountability for high standards and performance at the school level, assistant principals have been rendered virtually invisible in the scholarly literature. This study sought to fill the glaring gap in …

Self-Assembled Nanoantenna Enhance Optical Activity And Transport In Scalable Thin Films And Interfaces, Keith Richard Berry Jr.

Graduate Theses and Dissertations

Continued population growth and the decrease of existing energy platforms demands long-term solutions for development and implementation of scalable plasmonic metamaterials for energy and agricultural applications. Self-assembled nanoantenna into random and ordered arrangements are advanced herein for optical and thermal enhancements in scalable thin film. An analytical approach to estimating the thermal dynamics of random arrangements of nanoantenna resulted in estimates within 30% across a range of geometric parameters, nanoantenna-containing media, and thermal parameters. Multimodal thermal dynamics of polymer thin films containing gold nanoparticles (AuNPs) were observed through the natural log of the dimensionless temperature driving force plotted versus time …

Career Transitions Caused By Chronic Illness: A Career Construction Perspective, Julie Christine Hill

Graduate Theses and Dissertations

People living with chronic illness face significant challenges when it comes to finding and maintaining employment. There is ample research available that discussed the challenges and barriers to employment for this population. However, there is a lack of research devoted to interventions dedicated to assisting people with chronic illness in career exploration and development. This study attempted to address one possible intervention to assist people with chronic illness identify and pursue possible careers. The purpose of this research study was to explore the impact of participating in the Career Construction Interview on the career exploration of individuals facing a forced …

Diversity And Health: Three Essays Exploring Social Context And Outcomes, Aaron Novotny

Graduate Theses and Dissertations

As the world becomes more diverse and more integrated, examining how racial, political, and food diversity influences individuals’ consumption, behaviors, and health becomes more paramount than ever before. The United States grows more racially diverse with large racial and ethnic shifts on the horizon regarding the proportion of the population. With the U.S. population expected to become more diverse, individuals’ political affiliation becoming more prevalent to personal identity, and food security becoming more problematic; we examine how racial, political, and food diversity influences individuals’ consumption and preferences with the intent to understand what changes in health and preferences may occur. …

They Soon Forgot Their Words - Documentary, Karen Paulk

Graduate Theses and Dissertations

This documentary film, They Soon Forgot Their Words, is about the language issues that threaten the Kaqchikel Mayan language spoken in Guatemala. It is one of 21 Mayan languages spoken in the country and is one of the most widely used with more than 500,000 speakers. Unfortunately, however, scholars have noticed that Kaqchikel is in a state of “shift” a process where one language combines with another in speech. As is the case with many Mayan languages in Guatemala, Kaqchikel is often combined with Spanish in speech. The colloquial name used for the combining of these two languages is “kaqchinol.” …

Ix: Story About The Law Of Non-Discrimination - Documentary, Denzel Jenkins

Graduate Theses and Dissertations

The purpose of this project is to provide historical awareness for how Title IX, the anti-gender discrimination law in education, evolved to where it is today and the impact it has on universities in the United States. Strong-willed individuals sought change in the late 1960s and 1970s to prevent gender discrimination in education, thus beginning the creation of the law and making it a powerful tool for women’s rights. As Title IX expanded its reach, universities have been shaped by gender discrimination in athletics, sexual assault, harassment and rape. This project outlines the evolution of Title IX through research based …

Project Luminous: An E-Textiles Workshop Study To Increase Science Technology Engineering Mathematics/Science Technology Engineering Art Mathematics Interest In Middle School Girls, India Semone Callahan

Graduate Theses and Dissertations

In this research study, young middle schoolers engaged in a stimulating workshop that seamlessly merged fashion with technology and electrical engineering. Students learned how to use simple hand sewing skills to create wearable-tech items using conductive thread, sewable LED lights, and sewable battery packs. The objective of the study was to increase young women’s interest in Science Technology Engineering Mathematics/Science Technology Engineering Art Mathematics (STEM/STEAM).

Forty-eight middle school girls spent a day learning about the basics of e-textiles and building working products using their new knowledge. The day is split into three lessons. In lesson one students build a simple …

The Farmers’ Federation: Regional Racial Mythologies As Agricultural Capital, Jama Mcmurtery Grove

Graduate Theses and Dissertations

In 1927, the Farmers’ Federation agricultural cooperative in Western North Carolina launched an organization to solicit funds from wealthy donors. The money raised through philanthropic campaigns enabled the cooperative to fund large-scale agricultural projects, which helped members navigate the dramatic agricultural transformations of the early twentieth century. Although the cooperative advocated a progressive program of business-minded, scientific farming, its leadership modified programs to reflect farmer members’ limited resources and the realities of mountain production. As a result, the co-op provided a crucial bridge between white farmers and new methods of agricultural production that reached deep into peoples’ familial and productive …

Using Cover Crops To Recycle Nutrients In An Arkansas No-Till Corn System, Kelsey Lynn Hoegenauer

Graduate Theses and Dissertations

Cover crops can provide many benefits to cropping systems including erosion control, weed suppression, and increased soil organic matter. Regardless of the intended goal for using cover crops, the changes to the nutrient flux in a cropping system caused by cover crops retaining and recycling nutrients needs to be considered in order to maximize the productivity of the following commodity crops. This research encompassed complementary greenhouse, field, and laboratory experiments to evaluate nutrient uptake and release by tillage radish (Raphanus sativus) and cereal rye (Secale cereale) cover crops, as well as the subsequent early-season recovery of recycled nutrients by the …

Diffuse Reflectance Spectroscopy To Quantify In Vivo Tissue Optical Properties: Applications In Human Epithelium And Subcutaneous Murine Colon Cancer, Gage Joseph Greening

Graduate Theses and Dissertations

Colorectal cancer is the 4th most common and 2nd deadliest cancer. Problems exist with predicting which patients will respond best to certain therapy regimens. Diffuse reflectance spectroscopy has been suggested as a candidate to optically monitor a patient’s early response to therapy and has been received favorably in experimentally managing other cancers such as breast and skin. In this dissertation, two diffuse reflectance spectroscopy probes were designed: one with a combined high-resolution microendoscopy modality, and one that was optimized for acquiring data from subcutaneous murine tumors. For both probes, percent errors for estimating tissue optical properties (reduced scattering coefficient and …

The Effect Of Using Technology On Students’ Understanding In Calculus And College Algebra, Razieh Shahriari

Graduate Theses and Dissertations

This mixed qualitative and quantitative methods study addressed the effect of technology on college algebra and survey of calculus students’ understanding. This research study was conducted in fall 2016 on eight college algebra classes with a total of 315 students, and in summer 2017, on two survey of calculus classes with a total of 40 students at the University of Arkansas.

Several sources were used to collect data. A pre- and post- student attitude survey was administered during the first and last week of the semester for both college algebra and survey of calculus courses. Students’ scores and paper work …

An Exploratory Study Of The Impact Of Acculturation On Fashion Consumption Among Hispanic Immigrants In The U.S., Laura Toloza

Graduate Theses and Dissertations

With a population of 58 million in 2016, the Hispanic immigrant population in the U.S. is expected to grow nearly 30% by 2060 (Hispanic influence, 2016). Immigrants are affected by acculturation and often have difficulty maintaining their culture of origin. Prior studies have revealed acculturation influences on consumer behaviors, but despite the increased population and purchasing power of Hispanic immigrants in the U.S., few studies have explored the ways in which acculturation influences shopping behaviors for fashion products among Hispanic consumers. The purpose of this study is to explore the general attitude related to shopping (i.e., shopping orientation) of Hispanic …