Digital Commons Network^™

Three Essays Examining Technology Adoption And The Role Of Physicians In Improving Efficiency, Quality And Reducing Risk In Healthcare Supply Chains, Rajib Dutta

Graduate Theses and Dissertations

Hospitals across the USA are operating under extreme financial stress and looking for opportunities to improve financial stability and maximize bottom-line savings. As supply chain function accounts for up to 40 percent of total hospital operating cost, hospital leaders are increasingly viewing the healthcare supply chain as a potential area for efficiency gain and cost reduction. The recipe for effective and efficient care delivery is to synchronize the flow of supplies with patient needs by integrating products, processes, and information while complying with government regulations. Therefore, proper management of inventory, role of government policies in shaping hospital strategies, adoption of …

Use Of Herbicides Coated Onto Fertilizer And Applied Over-The-Top Of Cotton, Summer Linn

Graduate Theses and Dissertations

Cotton (Gossypium hirsutum L.) production faces numerous challenges, many related to weed management. A herbicide application method that focuses on combing resources that producers already have access to, such as herbicide-coated fertilizers, could be a practical approach for addressing late-season control of Palmer amaranth (Amaranthus palmeri S. Wats) and other problematic weed species. Two main factors would potentially impact the efficiency of utilizing this method: cotton tolerance to the application and weed control provided by the herbicide-coated fertilizers. Some considerations could affect the efficacy of these applications, such as when the treatments are applied and when they are activated by …

Evaluation, Modeling And Application Of Gallium Nitride Field Effect Transistor, Geno Guillaume

Graduate Theses and Dissertations

Gallium Nitride (GaN) has emerged as one of the leading materials for power devices due to its wide band gap and high electron mobility. The band gap is the minimum energy required to excite an electron up to a state in the conduction band where it can participate in conduction. Because of this, wide band gap (WBG) materials are favorable for various electrical applications. The market for GaN high-electron-mobility transistor (HEMT) is projected to exceed $1.25 billion by 2027. With the increase of market interest, modern technologies emerge that aim to push the boundaries of efficiency for GaN power devices. …

Ideological Becoming During Student, Preservice Teacher, And First-Year Teacher Experiences, Holly Sheppard Riesco

Graduate Theses and Dissertations

In the first manuscript in Chapter 2, this study examines two teachers’ talk about literacy as they describe literacy events and practices throughout multiple contexts. Drawing the theoretical framework of discourse and literacy as a social practice, this research illustrates the potential ways these first-year English teachers talk and have talked about literacy during their time as English methods students to their student teaching experience in their current contexts. Findings illustrate that the teachers assimilated and adapted their literacy ideologies early but continued evolving their understanding of literacy across various contexts. Implications for teacher education include considering literacy events through …

Parallel Degree Planning In The Pursuit Of Academic Success For Pre-Nursing Students In A Competitive Entry Baccalaureate Nursing Programs, Elizabeth L. Mckinley

Graduate Theses and Dissertations

This study sought to understand the student perceptions of parallel academic degree planning for the competitive entry undergraduate Nursing program at a case study university. Parallel degree planning is a relatively new term of alternative curricular planning. The qualitative study includes nine students and their experiences in planning for their intended major while simultaneously planning courses that meet another major or degree program, and understanding how parallel degree planning aided their retention and student satisfaction as well as their academic advisor interaction. The study was completed at a research university where the Nursing program has a very lower acceptance rate, …

Seeking Guidance For Firms’ It Infrastructure Decisions: Twoempirical Studies, Jacob Yates

Graduate Theses and Dissertations

This dissertation explores the complexities of firms' IT infrastructure resource allocation decisions through two essays. The research utilizes extensive datasets and advanced statistical methods to provide nuanced insights into strategic IT decisions. Essay one examines the performance implications of mirroring the IT infrastructure resource allocation decisions of various leading firms, including leading IT firms (identified by InformationWeek), industry firms (based on performance), and business strategy firms (based on performance) through the lens of mimetic isomorphism. Findings indicate that lower IT infrastructure intensity generally leads to higher future performance, suggesting IT infrastructure could also be viewed as an expense (whereas prior …

Desire Lines: Reading Queerly Through The Forests Of Medieval Love Literature, Brianna Skye Oliver

Graduate Theses and Dissertations

This dissertation conducts queer eco-sensitive readings of a selection of medieval love texts in Middle English and Old French. Informed in turns by the works of feminist, queer, and ecocritical scholars, each chapter engages with a different iteration of literary queerness by bringing the representation of natural spaces and objects (especially the forest) to the fore and reading through nature depicted in the texts. The readings all share a broad goal of inviting modern audiences to play with desire and its manifestations within each text to make meaning and compel intimacy between the work and its current audience. Chapter 1 …

Environments And Controls Of Erosional Bedforms In Soluble Channels, Ethan W. Oleson

Graduate Theses and Dissertations

Erosional bedforms, such as scallops, preserve valuable information on the paleohydrologic conditions forming soluble channels in karst systems. While these bedforms are commonly used to interpret past conditions, questions about their formation remain. Mathematical models of speleogenesis in turbulent flow predict that the conditions for forming scallops do not occur in natural carbonate systems. However, scallops are readily found in caves throughout the world. This conundrum has several possible resolutions, but each lacks field-based observations. We present a field-based study of the environments and controls of scallops in gypsum, limestone, and dolostone caves. Our results are based on field observation, …

Effects Of An Interdependent Group Contingency On Classroom Behavior And Teacher-Student Relationships For Students With Behavioral Support Needs: An Initial Investigation Of Cw-Fit Ms Tier 1 In Inclusive Secondary Settings, Nancy Ruth Young

Graduate Theses and Dissertations

A wide body of literature has documented the disproportionality in exclusionary discipline rates (Gregory et al., 2010; Losen et al., 2015; Office of Special Education Programs, 2020; Skiba, 2014; Welsh & Little, 2018). Students with disabilities or other minority backgrounds are removed from their classrooms at higher rates than their peers (Losen & Gillespie, 2012; Office of Special Education Programs, 2020). Such punitive practices have been associated with negative outcomes for the most at-risk youth. Thus, educational stakeholders have begun to move away from these punitive practices toward more positive behavior management methods. This study sought to examine the impact …

Moore’S Paradox, The First-Person, And Self-Knowledge, Matthew Warren

Graduate Theses and Dissertations

This thesis argues that Wittgenstein’s remarks on Moore’s paradox can be useful in resolving several debates concerning self-knowledge, particularly as that knowledge is manifested in avowals of belief, taking the form of sentences like “I believe that P”. Usually, sentences like these are taken to have a special first-person authority, epistemically privileged in comparison to their third-person counterparts ("He believes that P") and yet free from any reliance on evidence or observation in order to be made justifiably. It is also assumed that these avowals are functioning uniformly as reports on the speaker's mental state. Often, accounts of self-knowledge are …

Struvite Effects On Greenhouse Gas Emissions From Flood- And Furrow-Irrigated Rice In The Greenhouse, Chandler Arel

Graduate Theses and Dissertations

Over time, as the influences of climate-change and declining, mineable, global phosphorus (P) reserves begin to impact agricultural production systems, alternative fertilizer sources and management practices, such as struvite (MgNH₄PO₄ · 6H₂O) and furrow-irrigation, will be necessary to accommodate nutrient and water demands. The precipitation and use of struvite as a fertilizer-P source could reduce environmental damages caused by nutrient-rich wastewater streams, supplement domestic P supply, and improve the sustainability of flood-, and furrow-irrigated rice production by reducing greenhouse gas emissions. The study of struvite from both chemical and electrochemical precipitation processes is well documented, …

A Brief Values-Based Intervention For Increasing Distress Tolerance In Overcontrol, Katherine Hyde Brott

Graduate Theses and Dissertations

Overcontrol is a transdiagnostic personality syndrome underlying difficult-to-treat psychopathology. Current treatments options are limited, and those that do exist are both cost- and time-prohibitive. Brief interventions are one pathway to improving the care of people with overcontrol. This study had two major aims: (1) evaluate a brief values-based intervention to increase distress tolerance in people with overcontrol and (2) examine the correlates of overcontrol using a novel, theoretically derived transdiagnostic measure of overcontrol. Participants (n = 177) were randomly assigned to one of three conditions: values clarification only, linking values to emotion, or a control condition. They then completed a …

Computational Alchemy: Pioneering Spintronic, Thermoelectric, And Optoelectronic Materials Design Through First-Principles Calculations And Machine Learning, Eesha Sanjay Andharia

Graduate Theses and Dissertations

Intelligent materials discovery and design plays a pivotal role in advancement of spintronics, optoelectronics and thermoelectric devices and technology. In this study, we investigate three types of materials using first principles calculations. First, the structural, electronic, and magnetic properties of CrTiCoZ (Z = Al, Si) equiatomic quaternary Heusler alloys were investigated. CrTiCoAl compound was found to exhibit a half metallic ferromagnetic structure and Curie temperature above room temperature, which makes it an ideal candidate for magnetic tunnel junction, the basic building block of Spintronic devices. Second, we use Green’s function to obtain the finite temperature phonons by including quartic anharmonicity …

Intellectual Humility And The Role Of Feedback On Children’S Intellectual Humility Expression, Christina M. Barnes

Graduate Theses and Dissertations

Intellectual Humility (IH) is the ability to recognize, acknowledge, and act, on the fallibility of one’s own knowledge (Porter et al., 2021). IH is associated with many positive outcomes including intellectual curiosity, tenacity, open-mindedness, and mastery behaviors (Leary, 2018; Porter & Schuman, 2017, Porter et al., 2020) leading some to believe IH is the promotion of IH as the next great educational virtue. Some scholars argue however, that too much IH can lead to Intellectual Servility which is associated with negative outcomes such as maladaptive perfectionism, need for cognitive closure, and less willingness to change a belief when presented with …

Tuning Electronic Transport And Magnetic Properties Of Layered Magnetic Materials, Md Rafique Un Nabi

Graduate Theses and Dissertations

Two-dimensional magnetic materials (2DMMs) have gained significant interest due to their potential for novel physical phenomena and device applications. Mn_2-xZn_xSb, with its tunable magnetic properties and stable tetragonal layered structure, offers a rich platform for exploring these phenomena. The introduction of Zn into the Mn₂Sb lattice efficiently tunes magnetic and electronic properties, making it a compelling candidate for high-performance spintronic devices.

With this motivation, we synthesized Mn_2-xZn_xSb (0 ≤ x ≤ 1) single crystals using a flux method. Mn2Sb exhibits ferrimagnetic order below 550 K with antiparallel spins aligned along …

Smartphone Gaming And International Students: Exploring The Experiences Of Hypercasual Gameplay For Practicing English Vocabulary And Learning About The United States Culture In Mediated Action, Se He Hwang

Graduate Theses and Dissertations

The use of smartphones in everyday settings is widespread, and people around the world use smartphones not only for making phone calls and sending text messages but also as a tool for searching for information and playing smartphone games during their free time. Since people around the world have easy access to smartphones regardless of their physical locations, smartphones can function as a tool for learning purposes, and playing games for learning purposes also supports the students to learn information in less stressful settings since playing games is predominantly for entertainment. The purpose of this qualitative phenomenological study in mediated …

Assessment Of The Drivers Of Adoption Of Climate Smart Agriculture Practices Among Field Crop Farmers In Zambia, Faindani Nyirenda

Graduate Theses and Dissertations

Climate smart agriculture (CSA) practiced has been promoted in Zambia since the 1980s to address the declining crop productivity due to increased occurrence of drought or dry spells caused by climate change. Despite considerable research indicating that CSA practices have many potential benefits such as increased yield and income, the adoption rate in southern Africa is still low especially where farmers have stable off farm income. This might be because most of the research and promotion has been directed to the main staple crop maize and other context specific impacts related to agroecological and socioeconomic heterogeneity. In this study we …

Measurement Reliability For Intentions To Change Behavior, Emily Schlichtig

Graduate Theses and Dissertations

It is common for researchers to ask participants to associate probabilities with words, often using tools like the Likert scale to measure behavioral intentions and attitudes. However, it remains unclear what specific probabilities participants assign to the response options on a Likert scale, how much variation exists across these options, and whether these probabilities differ across various behaviors. The purpose of this paper is to explore the numeric probabilities that participants associate with different Likert scale points, to understand their perception of the variation at each point, and to compare these perceptions across three behaviors: eating more vegetables, exercising more, …

A Two-Part Validation Study Of The Sexual Minority Identity Emotion Scale, Henrietta Kadi Tettey-Tawiah

Graduate Theses and Dissertations

A number of existing studies indicate that there is some correlation between pride and shame and various behavioral health outcomes like anxiety, depression, and self-harm in the general population. Research also confirms that this relationship is true among sexual minorities as well. This study sets itself up to interrogate this assertion vis-à-vis sexual minority adolescents (SMAs). Consequently, confirmatory factor analysis (CFA) and differential item functioning (DIF) detection analysis were performed on the 35-item Sexual Minority Identity Emotion Scale (SMIES) for SMAs. A tree-based modeling technique, specifically conditional inference trees (CIT), was then employed to explore and make predictions about the …

A Grain Of Hope: Analysis Of The Economic Potential For An Association Of South East Asian Nations (Asean) Rice Futures Market, Richard Nyarko

Graduate Theses and Dissertations

The ASEAN (Association of Southeast Nations) region is the world's leading rice producer, yet the region lacks a dedicated rice futures market. In contrast other world grain markets are served by liquid futures contracts, which aid producers through price discovery and risk management. This glaring gap raises a critical question: Can an ASEAN rice futures market be established to unlock the potential economic benefits for the region's rice sector? By predicting ASEAN rice pricing features and analyzing the efficacy of hedging for regional rice market players, this study explores the viability of an ASEAN rice futures contract to service the …

Cobblestone Farms, Fayetteville: A Study Of A Non-Profit Teaching Farm’S Volunteer Management Programs, Ariel Scholten

Graduate Theses and Dissertations

Non-profit teaching farms (NPTFs) represent a unique intersection of mission-driven non-profits, agricultural education, and sustainable food production. Despite their growing presence, research on NPTFs, particularly regarding volunteer management, remains limited. This thesis examines volunteer management practices at Cobblestone Farms (CF), a prominent NPTF in Northwest Arkansas, focusing on its strategies to engage and retain volunteers. Through qualitative methods including semi-structured interviews with staff and volunteers, the study identifies, describes, and evaluates key components of CF's volunteer management program. Major findings reveal that CF leverages digital media, online platforms like Give Pulse, and strategic partnerships to recruit and maintain volunteers. The …

The Effects Of Grading Equity Practices On Students: Do Student Perceptions Of And Teachers’ Exposure To Grading Equity Practices Matter?, Sarah Ruth Morris

Graduate Theses and Dissertations

This dissertation critically examines grading practices within schools, tracing the evolution from traditional to modern approaches and highlighting the social dimensions and debates surrounding grading. Through a mixed-methods study spanning three empirical chapters, it explores students' and teachers' perceptions of grading practices, the impact of professional development (PD) on teachers' approaches to grading equity, and the resultant effects on student outcomes. Chapter Two reveals students' preferences for practices that recognize effort and support academic growth, alongside a tension between Pre-AP students' resistance and the support from students under high stress. Chapter Three finds that while PD can shift teachers' views …

Consumer Perceptions Of Hemp-Fed Aquaculture, Jillian Hyink

Graduate Theses and Dissertations

Global demand for seafood has increased significantly over the past several decades and is projected to continue rising in the future. The volume of aquaculture production has also particularly increased to meet this demand in the United States and globally, offering a relatively sustainable supplement to wild fish supplies. However, conventional fish farming uses unsustainable quantities of fishmeal and fish oil as feed inputs, which raises the cost of production and introduces safety concerns associated with fish consumption. One currently underexplored potential alternative to fishmeal is hemp grain, which can provide an affordable and nutritious feed for carnivorous fish and …

How Supply Chains Respond To Disruptions: Three Essays On Responses To Operational, Geopolitical, And Natural Disaster Disruptions, Travis Kulpa

Graduate Theses and Dissertations

The ability to respond to supply chain disruptions efficiently and effectively is a highly sought after capability, particularly in light of recent events such as the COVID-19 pandemic, geopolitical conflicts, and major natural disasters. These events have led researchers, practitioners, and policymakers to ask: how can we better use our resources to respond to supply chain disruptions? This dissertation examines responses to the three main types of supply chain disruptions: operational disruptions, geopolitical disruptions, and natural disasters. The first study examines how US importers adjust between air and containerized transportation in response to shipment delays and abnormally high demand from …

Quantifying Physical Function: Moving Towards A New Definition And Better Assessment, Anthony Campitelli

Graduate Theses and Dissertations

Though poor physical function (PF) and disability are two of the most impactful problems facing older adults today, the field of kinesiology has not yet devised a method of measuring PF, thus limiting investigations with the potential to lead to improved PF interventions and assessments. This dissertation aimed to develop a single, continuous measure of PF using a latent variable modeling approach, and then use the generated scores to evaluate the role of lower body muscular power in PF assessment and to construct an improved PF assessment battery for predicting overall PF. Each aim of this dissertation was addressed through …

Understanding And Control Of Frustration And Topological Defects In Ferroic Matter, Suyash Rijal

Graduate Theses and Dissertations

Ferroic matter are of great importance as they provide a platform to extend the understanding of many-body physics and also for their amazing functional properties relevant for technological advancements. The work in this dissertation is dedicated to two of such ferroic materials.

First is CrGeTe₃ (CGT), a two dimensional (2D) magnet discovered in 2017. The discovery of two-dimensional magnetism has invigorated the research community as their low dimensionality offers a unique avenue to understand and investigate the origin of magnetism in these atomically thin systems and harvest diverse application such as information processing, storage and transfer using their magnetic …

Students' And Teachers' Perceptions Of Play On Students' Classroom Behavior, Melissa Bradt

Graduate Theses and Dissertations

Play is an integral part of human nature. Research has demonstrated that play supports physical, socio-emotional, and cognitive development in children and even adults. However, according to the American Association for the Child’s Right to Play (2024), 40% of school districts in the U.S. have eliminated or reduced recess in order to promote academic excellence as measured by standardized tests. How does the reduction in play time influence students’ classroom behavior? An examination of this question has tremendous theoretical and societal impact as it informs the influence of the environment on human development. This fundamental question in human development has …

L-Arabinose Induced Overexpression For Crystallographic Analysis Of The Spoiie Protein From Clostridioides Difficile, Danielle M. Maynard

Graduate Theses and Dissertations

The SpoIIE protein plays a crucial role in the sporulation process of Clostridioides difficile, a pathogen responsible for severe gastrointestinal diseases. Understanding the structural and functional aspects of SpoIIE is pivotal for deciphering its role in sporulation and exploring its potential as a therapeutic target. This study investigates the impact of varying concentrations of L-arabinose on the overexpression of SpoIIE in C. difficile, aiming to optimize protein yield and purity for subsequent crystallization and structural determination via X-ray crystallography. Using a recombinant expression system in Escherichia coli, different concentrations of L-arabinose were employed to induce SpoIIE overexpression. Protein purification was …

Quantum Modeling & Experimental Studies Of Radical Chemistry, Justin Michael Barrett

Graduate Theses and Dissertations

This work describes two projects centered around radical chemical mechanisms. The first investigation generalized the utility of a C-N bond homolysis followed by a [1,3] – rearrangement synthetic strategy found possible in N-alkylated thiazole & benzothiazole species onto analogous systems. Computational investigation guided the inquiry on structurally analogous systems that would favor a radical, [1,3] – rearrangement. Herein, we describe the implementation of that mechanism to transform Breslow Intermediate-like substrates into tertiary alcohol and amide products under facile conditions. We confer on the proficiency of this strategy with 2-pyridinemethanol and the problematic implementation with 2-(aminomethyl)pyridine. The second investigation solved a …

Impacts Of High-Frequency Operation On Magnetics And Performance On Isolated Power Electronic Converter Design, David Arturo Porras Fernandez

Graduate Theses and Dissertations

The pursuit of high-power density and high switching frequency is a central theme in the advancement of power electronic converters. While these parameters offer significant benefits in terms of compactness and performance, they also introduce challenges related to efficiency and thermal management. This doctoral dissertation aims to provides a design framework to analyze the implications of high-frequency operation (> 100 kHz) on magnetics design and performance in power electronic converters, particularly when integrating silicon carbide (SiC) power modules. It examines the advantages and disadvantages of high-frequency operation and delves into its effects on the performance of the converter, focusing on …