Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Graduate Theses and Dissertations

Discipline
Institution
Keyword
Publication Year

Articles 571 - 600 of 2944

Full-Text Articles in Entire DC Network

Springdale, Arkansas Public Art And Its Impact On Diverse Community Members, Cara Elvira Salvatore May 2022

Springdale, Arkansas Public Art And Its Impact On Diverse Community Members, Cara Elvira Salvatore

Graduate Theses and Dissertations

Where we live and how we feel about this environment shape our quality of life. Our geographical location can contribute to our self-perceptions and bond-forming. These are each prioritized by the National Association of Social Workers’ (2021) ethics as essentials for overall health. The areas we live in steward different resources to meet local needs and priorities, ultimately achieving varying impact. Minimal, if any, research exists on topics such as Springdale, Arkansas’ public art, the impactful qualities of public art as defined by members of the public, and how the public art may change individuals’ navigation of and interactions within …


Wonders In The Deep: Faith And Religious Practice In The Shipboard Writings Of American Sailors, 1810-1859, Valerie Sallis May 2022

Wonders In The Deep: Faith And Religious Practice In The Shipboard Writings Of American Sailors, 1810-1859, Valerie Sallis

Graduate Theses and Dissertations

While stereotypes of sailors as immoral, godless ne’er-do-wells flourish in mainland historical accounts, little attention has been paid to the records left by sailors that document their own faith and religious practices. This thesis examines the logbooks, journals, and diaries written by American sailors while at sea, sounding the depth of sailors’ religious beliefs through their own words. While American seamen certainly drank, swore, and caroused, sailors also frequently captured in their writing a much more religious nature than the mainland expected of them. Sailors’ position as highly mobile laborers on the ultimate borderlands—the sea itself—impacted their religious practice and …


Cognitive Tribalism: A Social Doxastic Model, Robert Ragsdale May 2022

Cognitive Tribalism: A Social Doxastic Model, Robert Ragsdale

Graduate Theses and Dissertations

How are facemasks – seemingly innocuous artifacts of the biomedical industry – currently embroiled in cultural wars? What motivates popular rejections of scientific consensus and messaging about the reality and consequences of anthropogenic climate change or the COVID-19 virus and vaccine? The puzzle is that (a) despite its being in everyone’s rational interests to have a well-informed public and body politic about collective threats, and (b) despite the public availability of accurate and reliable information, scientific messaging and public discourse surrounding climate change, COVID-19, and vaccine hesitancy, nevertheless, tend to be hijacked by political interest. Yet, if belief is essentially …


Evaluating The Effects Of Cardiorespiratory Fitness Level And Gender On Outcomes Of The Buffalo Concussion Bike Test, Katie Stephenson May 2022

Evaluating The Effects Of Cardiorespiratory Fitness Level And Gender On Outcomes Of The Buffalo Concussion Bike Test, Katie Stephenson

Graduate Theses and Dissertations

Background: Accurate assessment of concussion is crucial for creating a treatment plan. The Buffalo Concussion Bike Test (BCBT) is a 30-minute graded exercise protocol for a stationary bicycle. Previously this assessment has been reportedly used to screen for exercise intolerance secondary to autonomic dysfunction; however, the original purpose of the assessment was to find a sub-symptom threshold for exercise rehabilitation during concussion recovery. Starting resistance for the BCBT protocol is based solely on body mass. Other factors such as cardiorespiratory fitness level and sex have been noted to effect outcomes on similar assessments and are not considered in the BCBT …


Por Una Vida Mejor: Educational Attainment For Latinos In The Nuevo South In The Pursuit Of A Better Life, Maria Ana Sandoval May 2022

Por Una Vida Mejor: Educational Attainment For Latinos In The Nuevo South In The Pursuit Of A Better Life, Maria Ana Sandoval

Graduate Theses and Dissertations

Por una Vida Mejor, a sentiment that is shared amongst the Latino community. How this sentiment fares in the pursuit of higher education has been largely understudied. I analyze how Latino college students navigate the sociopolitical environment in Arkansas in their pursuit of middle-class certification to help their family and fulfill the American dream. In this thesis I offer an analysis to understand Latinos in the Nuevo South. I use data from the 2021 Latino College Students Navigating the Sociopolitical Environment in Arkansas survey through the lens of Funds of Knowledge (Velez-Ibanez and Greenberg 1992). I conduct a quantitative analysis …


Deep Learning Strategies For Pool Boiling Heat Flux Prediction Using Image Sequences, Connor Heo Dec 2021

Deep Learning Strategies For Pool Boiling Heat Flux Prediction Using Image Sequences, Connor Heo

Graduate Theses and Dissertations

The understanding of bubble dynamics during boiling is critical to the design of advanced heater surfaces to improve the boiling heat transfer. The stochastic bubble nucleation, growth, and coalescence processes have made it challenging to obtain mechanistic models that can predict boiling heat flux based on the bubble dynamics. Traditional boiling image analysis relies on the extraction of the dominant physical quantities from the images and is thus limited to the existing knowledge of these quantities. Recently, machine-learning-aided analysis has shown success in boiling crisis detection, heat flux prediction, real-time image analysis, etc., whereas most of the existing studies are …


Examining Risks To Honey Bee Pollinators Foraging In Agricultural Landscapes, Jon Zawislak Dec 2021

Examining Risks To Honey Bee Pollinators Foraging In Agricultural Landscapes, Jon Zawislak

Graduate Theses and Dissertations

Bee pollinators provide essential ecological services to wild plant communities, and addtremendous economic value to agriculture by improving both the quality and quantity of crop yield. Beekeepers are often contracted by growers to provide colonies of honey bees for pollination of high-value produce (fruits, vegetables and nuts). Many of the major commodity crops produced in the central and mid-southern United States are wind-pollinated (rice, corn, grain sorghum, wheat), or are sufficiently self-fertile (soybeans, cotton), and so do not require bee pollination in order to produce yield. Beekeepers still rely on these agricultural landscapes to support honey bee colonies when not …


Combined Stressors In Reliability Failure Modes In Flip-Chip Electronic Packaging, Mahsa Montazeri Dec 2021

Combined Stressors In Reliability Failure Modes In Flip-Chip Electronic Packaging, Mahsa Montazeri

Graduate Theses and Dissertations

The trend toward miniaturization of electronic devices to fulfill Moore’s law introduces new reliability concerns to the electronic packaging process while worsening existing primary challenges. In solder interconnect specifically, temperature cycling is one of the prominent failure threats. However, with further downscaling of the flip-chip solder connections, electromigration also present a precarious failure mode in these interconnects. On the other hand, understanding the degradation mechanism in solders is crucial for the power electronic products' reliability considering the industrial tendency to replace wirebonds with solder attachment while improving the current carry capacity. This dissertation utilizes FEA simulation and an experimental approach …


Thermometry Via Diffusion In Ferrous Core-Shell Nanoparticles For Induction Heating Applications, Hayden Carlton Dec 2021

Thermometry Via Diffusion In Ferrous Core-Shell Nanoparticles For Induction Heating Applications, Hayden Carlton

Graduate Theses and Dissertations

Induction heating causes the release of enormous amounts of heat from dispersed magnetic nanoparticles. While the rate of heat transfer can be easily quantified calorimetrically, measuring the temperature of the nanoparticles on the nanoscale presents experimental challenges. Fully characterizing the temperature and thermal output of these magnetic particles is necessary to gauge overall heating efficiency and to provide a more holistic understanding of heat transfer on the nanoscale. Herein, this dissertation seeks to develop a novel nanoparticle thermometry technique, which correlates diffusion behavior in core-shell nanoparticles to local temperature. Initial measurements suggested that heating silica capped ferrous nanoparticles (SCNPs) via …


Respiratory Compensated Robot For Liver Cancer Treatment: Design, Fabrication, And Benchtop Characterization, Mishek Jair Musa Dec 2021

Respiratory Compensated Robot For Liver Cancer Treatment: Design, Fabrication, And Benchtop Characterization, Mishek Jair Musa

Graduate Theses and Dissertations

Hepatocellular carcinoma (HCC) is one of the leading causes of cancer-related death in the world. Radiofrequency ablation (RFA) is an effective method for treating tumors less than 5 cm. However, manually placing the RFA needle at the site of the tumor is challenging due to the complicated respiratory induced motion of the liver. This paper presents the design, fabrication, and benchtop characterization of a patient mounted, respiratory compensated robotic needle insertion platform to perform percutaneous needle interventions. The robotic platform consists of a 4-DoF dual-stage cartesian platform used to control the pose of a 1-DoF needle insertion module. The active …


Audience, Minah Kim Dec 2021

Audience, Minah Kim

Graduate Theses and Dissertations

My work, “audience,” reflects binary oppressions sensed and recognized in my private memory and psychological space of living as a transnational being. Linguistic and sensical cognition I(a vulnerable transnational individual) had, have easily been dis-esteemed and devalued by White-centric epistemology. By confronting the reality of history that shapes my thoughts, performance, names, and meanings, I emphasize transnationality as an opportunity to multiply visual tools, dialogues, and inter-connections of individuals. This work integrates moments of physical connection and accountability by utilizing multidisciplinary expression, including ceramics, writing, sound, and the movements of performers and of the audience. Like an interfusion between artists …


Field Evaluation Of Struvite As A Phosphorus Source, Niyi Sunday Omidire Dec 2021

Field Evaluation Of Struvite As A Phosphorus Source, Niyi Sunday Omidire

Graduate Theses and Dissertations

Phosphorus (P) is an element that is crucial in many biological processes in all forms of life and is not substitutable. Excess P in wastewaters leading to the degradation of receiving waters or eutrophication once released is a major environmental concern. Removal of excess P from wastewater as the mineral struvite (MgNH4PO4·6H2O) could be a promising solution to reduce P discharge into receiving waters and can potentially provide a valuable fertilizer-P source for agricultural production. The objectives of this project were to evaluate the effects of: 1) chemically precipitated struvite (CPST), compared to triple superphosphate (TSP) and an unamended control …


Remixed, Remastered: Investigating Organizational Adaptation In Higher Music Education, Jacob Bruce Hertzog Dec 2021

Remixed, Remastered: Investigating Organizational Adaptation In Higher Music Education, Jacob Bruce Hertzog

Graduate Theses and Dissertations

Higher music education presents a unique opportunity to examine change within higher education due to the digital revolution in the music industry over the past two decades. The purpose for conducting this study was to describe, map, and explain the strategies that higher music education programs are using to adapt to the digital revolution in the music industry. This study was grounded in organizational adaptation theory, drawing upon nine well-established theories: population ecology, life cycles, strategic choice, isomorphism, symbolic action, resource dependence, cybernetics, and network theory. Critical concepts of the turbulent environment, environmental perception, and organizational adaptation strategy emerged from …


The Passion Of Ken Williams: The Double Life Of A Mayor, The Newspaper That Brought Him Down, And The Story Of Journalism In America, Michael Adkison Dec 2021

The Passion Of Ken Williams: The Double Life Of A Mayor, The Newspaper That Brought Him Down, And The Story Of Journalism In America, Michael Adkison

Graduate Theses and Dissertations

In November 2007, a team of reporters from the Benton County Daily Record published an expose revealing that Ken Williams, the mayor of Centerton, Arkansas, had been living a double life. In his former life as Don LaRose, he was a preacher in the Northeast, who one day vanished without a trace. His wild saga includes Satanists, truth serums, and a supposed murder. The Benton County Daily Record confronted the former reverend several times before he finally confessed to his double life. The next morning, he resigned as mayor, saying that the decisions he made were for the protection of …


News Media Trust And Mistrust During The Covid-19 Pandemic, Kaitlyn Seiter Dec 2021

News Media Trust And Mistrust During The Covid-19 Pandemic, Kaitlyn Seiter

Graduate Theses and Dissertations

With the uncertainty and growing information surrounding the COVID-19 pandemic, news media consumption has increased drastically compared to pre-pandemic consumption. At the start of the pandemic, 94% of Americans reported closely following COVID-19 news, with more than half of Americans spending more than two hours consuming COVID-19 news everyday (SSRS, 2020). With the news media serving as a critical source of information through this public health crisis, the public’s reactions, behaviors, and attitudes to the pandemic stem from the level of trust they have in the news media to share COVID-19 information. Because of this, this study examines trust in …


Recalibrating Student Services: Examining Staff Perceptions Of Services During Covid-19, Justin White Dec 2021

Recalibrating Student Services: Examining Staff Perceptions Of Services During Covid-19, Justin White

Graduate Theses and Dissertations

As a result of the 2019 global coronavirus pandemic, nearly every business and industry in the United States was forced to adapt its operations to accommodate the restrictions that a community health crisis necessitated. This study examined the experiences of front-line Enrollment Services staff while serving students during the pandemic at one community college in the Midwestern United States. The study focused on staff perceptions of how college policies, processes, and leadership affected the student onboarding experience that encompasses the complete path a student takes from beginning as an applicant to becoming an enrolled student in the classroom. The study …


Engineering Fluorescently Labeled Human Fibroblast Growth Factor One Mutants And Characterizing Their Photophysics Properties Towards Designing Fret Assays, Mamello Mohale Dec 2021

Engineering Fluorescently Labeled Human Fibroblast Growth Factor One Mutants And Characterizing Their Photophysics Properties Towards Designing Fret Assays, Mamello Mohale

Graduate Theses and Dissertations

Human fibroblast growth factor one (hFGF1) belongs to a family of 22 FGF members produced by fibroblast cells. Cell signaling during physiological processes of angiogenesis and wound healing occurs when hFGF1 binds to its receptor (FGFR). However, when heterogenous homeostasis is not maintained, fibroblast cells exhibit excessive proliferation which can lead to a myriad of cancers. smFRET is an ultrasensitive distant dependent (1-10 nm) technique capable of resolving such heterogeneity in structural dynamics and binding affinities (Kd). Therefore, we successfully designed and characterized fluorescently labeled hFGF1 tracers which span the visible light region of the electromagnetic spectrum for use in …


Synthesis Of Polyethylene Glycol-Based Hydrogels And Silver/Gold Nanostructures For Biomedical Applications, Isabelle Ishimwe Niyonshuti Dec 2021

Synthesis Of Polyethylene Glycol-Based Hydrogels And Silver/Gold Nanostructures For Biomedical Applications, Isabelle Ishimwe Niyonshuti

Graduate Theses and Dissertations

This work focuses on the synthesis of biocompatible polyethylene glycol (PEG)-based hydrogels, silver nanoparticles (AgNPs), and silver-gold nanocages (Ag-AuNCs) for biomedical applications. The dissertation includes two parts with Part I on the work of PEG-based hydrogel for wound healing applications and Part II on the work of Ag/Au nanostructures for antimicrobial applications. Part I studies PEG-based hydrogel for the delivery of fibroblast growth factors (FGFs) for wound healing applications, aiming to overcome the challenge of designing hydrogels capable of the sustained release of bioactive FGFs. This research develops new biocompatible anionic injectable hydrogel formulations based on Poly (Oligo Ethylene Glycol …


Cover Crop Effects On Infiltration, Aggregate Stability, And Water Retention On Loessial And Alluvial Soils Of The Lower Mississippi River Valley, Shelby G. Lebeau Dec 2021

Cover Crop Effects On Infiltration, Aggregate Stability, And Water Retention On Loessial And Alluvial Soils Of The Lower Mississippi River Valley, Shelby G. Lebeau

Graduate Theses and Dissertations

Cover crops are a widely considered practice to improve soil health in the form of erosion control, organic matter additions, and improving water-holding capacity. Despite the well-documented benefits, little is known about the effect of cover crops on soils in the Lower Mississippi River Valley (LMRV), an area historically dominated by intensive cultivated agriculture, with soils prone to erosion, and unsustainable aquifer withdrawals for irrigation. The main objective of this study was to evaluate the effects of cover crops [with cover crops (CC) and without cover crops (NCC)] on near-surface soil physical/chemical- and infiltration-related properties, aggregate stability, and water retention. …


Efficacy Of Spirulina (Arthrospira Platensis) Utilization In Broiler Diets, Garrett James Mullenix Dec 2021

Efficacy Of Spirulina (Arthrospira Platensis) Utilization In Broiler Diets, Garrett James Mullenix

Graduate Theses and Dissertations

Spirulina (Arthrospira platensis) is a cyanobacteria microalgae that has potential as an animal feed ingredient. Five experiments were conducted to further assess its ability to serve as a protein source in broiler diets. Experiment 1 consisted of an amino acid digestibility and apparent metabolizable energy assay. The results indicated that the standardized ileal amino acid levels of spirulina are comparable with typical soybean meal. Experiment 2 assessed the performance and processing parameters of broilers fed 10% spirulina in low crude protein diets, using published digestibility coefficients. Spirulina inclusion improved footpad quality and increased redness and yellowness of the breast, skin …


Reflective Conversations: Exploring Faculty’S Perceptions Of Reflection To Enhance Teaching Effectiveness, Jonna Lynn Myers Dec 2021

Reflective Conversations: Exploring Faculty’S Perceptions Of Reflection To Enhance Teaching Effectiveness, Jonna Lynn Myers

Graduate Theses and Dissertations

The purpose of this pragmatic qualitative research study is to examine the impact of a faculty development program’s reflection component on teaching effectiveness as perceived by the faculty participants. This study utilizes Schön’s (1983) reflective practice, which calls professionals to move from the technical rationality position of development and practice (theoretical and detached) into a reflective position (practical and applicable). Schön contends that this movement occurs by focusing on reflection in the forms of reflection-in-action, reflection-on-action, and reflective conversations. This study specifically examines the reflection component embedded into the inaugural class of the Excellence in Teaching Program (ETP) at pseudonymous …


Design, Synthesis, And Catalytic Application Of Crystalline Porous Nanomaterials, Zainab Abdullah Almansaf Dec 2021

Design, Synthesis, And Catalytic Application Of Crystalline Porous Nanomaterials, Zainab Abdullah Almansaf

Graduate Theses and Dissertations

Chapter 1: COFs (covalent organic frameworks) are a new type of microporous crystalline polymer connected by organic units via strong covalent bonds. Due to their well-defined crystalline structures and excellent chemical and thermal stabilities, COF materials are considered promising candidates in applications such as gas adsorption, catalysis, and energy storage.Chapter 2: A new covalent organic framework (COF) based on imine bonds was assembled from 2-(4-formylphenyl)-5-formylpyridine and 1,3,6,8-tetrakis(4-aminophenyl)pyrene, which showed an interesting dual-pore structure with high crystallinity. Postmetallation of the COF with Pt occurred selectively at the N donor (imine and pyridyl) in the larger pores. The metalated COF served as …


In The Line Of Duty - A Documentary Film About Davis Duty And His Seeing Eye Dog, Paulina Sobczak Dec 2021

In The Line Of Duty - A Documentary Film About Davis Duty And His Seeing Eye Dog, Paulina Sobczak

Graduate Theses and Dissertations

“In the Line of Duty” is a documentary film about Jeff Davis Duty, a man from a small town in Arkansas, who lost his sight at the age of five. He is the oldest Seeing Eye dog user in the world. At the age of 22, he was awarded a Fulbright Scholarship at the London School of Economics in England, as the first Fulbright Scholar with disability. Duty achieved great success in his career as a lawyer, leading a fulfilling and enjoyable life. The documentary film’s storytelling focuses on Duty’s life from his childhood to current times and presents all …


Two-Dimensional Black Phosphorus For Terahertz Emission And Near-Field Radiative Heat Transfer, Mahmudul Hasan Doha Dec 2021

Two-Dimensional Black Phosphorus For Terahertz Emission And Near-Field Radiative Heat Transfer, Mahmudul Hasan Doha

Graduate Theses and Dissertations

The main focus of this work is to investigate two potential optical and optoelectronic applications of black phosphorus (BP): the near-field radiative heat transfer in plasmonic heterostructures with graphene and terahertz emission from multi-layer BP photoconductive antennas. When the separation distance between graphene-black phosphorene is much smaller than or comparable to the thermal wavelength at different temperatures, a near-field radiation heat transfer breaks the Planck blackbody limit. The magnitude of the near-field radiation enhancement acutely depends on the gate voltage, doping, and vacuum gap of the graphene and BP pair. The strong near-field radiation heat transfer enhancement of the specific …


How Bad Do You Want It?: The Personal Motivation Of Joining A Sorority, Garry Butler Dec 2021

How Bad Do You Want It?: The Personal Motivation Of Joining A Sorority, Garry Butler

Graduate Theses and Dissertations

College campuses provide students with endless opportunities to become members of various student organizations that provide leadership, accountability, a sense of belonging, personal growth, and development. Many colleges have provided students with the opportunities to join social Greek fraternity and sorority organizations. The foundation of social fraternity and sorority organizations are built on principles such as sisterhood, brotherhood, scholarship, service, philanthropy, and leadership. Many traditional college-age women who desire to become members of a social sorority organization all participate in a formal recruitment process. There are various motivations that traditional college-age women have for joining social sororities on college campuses …


Advising Student Veterans In Higher Education, Brett Edward Rankin Dec 2021

Advising Student Veterans In Higher Education, Brett Edward Rankin

Graduate Theses and Dissertations

Student veterans are a growing population in higher education with over 650,000 veterans using education benefits in 2018. Student veterans are enrolling in colleges of all types, and many institutions have support services designed for them specifically. In most cases these support services are limited to veteran centers where officials certify credit hours for financial benefits and do not offer services to help them fully assimilate into higher education. Student veterans bring a wide range of life experiences, culture, and work ethic to college campuses which serves to build and diversify the student body. However, veterans have reported feeling isolated …


Lgbtq+ College Students' Perceptions Of Social Presence And Self-Disclosure In Online Learning: A Single-Case Study, Scott Anthony Wright Dec 2021

Lgbtq+ College Students' Perceptions Of Social Presence And Self-Disclosure In Online Learning: A Single-Case Study, Scott Anthony Wright

Graduate Theses and Dissertations

Social interaction among learners plays a significant role in online learning environments (Garrison, 2006; Kreijns et al., 2014; Mykota, 2017). The construct of social presence in online courses is important because it influences interaction and connectedness among learners and its effects on their learning outcomes and emotional well-being. Social presence at its essence refers to how an individual is perceived as a "real person" in an online environment (Gunawardena & Zittle, 1997). Online students must decide what aspects of their social identities they share in their interactions with their peers and instructors. Furthermore, LGBTQ+ students must negotiate what aspects of …


A Song Of The Bluff: The Phoenix Of Pine Bluff Arkansas - Documentary, Neba Evans Dec 2021

A Song Of The Bluff: The Phoenix Of Pine Bluff Arkansas - Documentary, Neba Evans

Graduate Theses and Dissertations

Pine Bluff, Arkansas has long grappled with a reputation as a town riddled with crime and violence. Once a thriving agricultural center of the state, Arkansas residents tend to score the town’s successes as relics of the past. Economic decline, negative migration systems like white flight and brain drain, and racial disparities ties to the city’s roots has continued to take its toll on the city. Nonetheless, the community of Pine Bluff knows excellence has and continues to prosper there. A Song of the Bluff is a 15-minute documentary that seeks to flip the negative narrative by confronting these stereotypes …


Adapting Animals: Nineteenth-Century British Literature, Science, And Media, Kristen Layne Figgins Dec 2021

Adapting Animals: Nineteenth-Century British Literature, Science, And Media, Kristen Layne Figgins

Graduate Theses and Dissertations

In the nineteenth century, Charles Darwin and other proponents of evolutionary theory provided a theoretical framework for discussing the question of humanity’s place in the world. These nascent theories emphasized the shared animal nature of humans and the nonhuman creatures who had once occupied a distinctly lower place on the chain of being. My dissertation addresses the question of how nineteenth-century scientific attitudes about animals were reflected in the literature of the period. By examining culture-texts from the nineteenth century, it is clear that literature was an active participant in extending scientific knowledge, often by playing with the blending categorical …


Screening For Our Fathers: Representations Of Native American Masculinity In American Film, Jeromy Duane Miller Dec 2021

Screening For Our Fathers: Representations Of Native American Masculinity In American Film, Jeromy Duane Miller

Graduate Theses and Dissertations

In this work, I examine representation of Native American masculinity in the American film industry. The American film industry began just over a century ago, and one of its earliest subjects was the Native American. Throughout its history, the American film industry has maintained a steady trajectory of exploitation and erasure of Native American men and their subsequent masculine qualities. While there are notable historical outliers and critical exceptions in the 21st century, Native American men in film have been continually reduced to corpses, devoid of significant social presence, and denied meaningful explorations of their sexuality and interpersonal identity. The …