Digital Commons Network^™

Hospital-Based Professional Spiritual Care: Evaluating The Utilization, Availability, And Impact Of Chaplains., Kelsey B. White

Electronic Theses and Dissertations

BACKGROUND: The Affordable Care Act, enacted in 2010, transformed healthcare policy and forced hospitals to reevaluate traditional methods for care delivery. Researcher advocated for patient-centered models of care to reduce costs, address inequitable access to services, and improve service quality. These models prioritize patient values, preferences, and beliefs inclusive of patients’ religious and spiritual needs. Professional chaplains provide religious and spiritual care within many hospital settings. This dissertation explored the characteristics of hospitalized persons using chaplains, the factors associated with a hospital reporting a chaplaincy department, and how those services impacted patient satisfaction. METHODS: The first analysis used a two-part …

Literacy Abilities Of Children And Adolescents With Williams Syndrome., Caroline Greiner De Magalhaes

Electronic Theses and Dissertations

In this dissertation I report findings from two studies of the literacy abilities of children with Williams syndrome (WS), a genetic disorder associated with intellectual disability. I had two overarching goals: 1) evaluate the applicability of theories of reading and spelling acquisition developed based on typically developing children to children with WS; and 2) provide results that would inform the development of targeted assessments and interventions. In Study 1, individual differences in phonological awareness, visual spatial perception, vocabulary, overall intellectual abilities, and reading instruction approach (systematic phonics vs. other approaches) for sixty-nine 6 – 7-year-olds (most of whom were in …

Local Feature Selection For Multiple Instance Learning With Applications., Aliasghar Shahrjooihaghighi

Electronic Theses and Dissertations

Feature selection is a data processing approach that has been successfully and effectively used in developing machine learning algorithms for various applications. It has been proven to effectively reduce the dimensionality of the data and increase the accuracy and interpretability of machine learning algorithms. Conventional feature selection algorithms assume that there is an optimal global subset of features for the whole sample space. Thus, only one global subset of relevant features is learned. An alternative approach is based on the concept of Local Feature Selection (LFS), where each training sample can have its own subset of relevant features. Multiple Instance …

Charting The Unknown: Examining The Prevalence And Correlates Of Seconday Traumatic Stress In Kentucky Probation And Parole Officers., Amanda Marie Roberts

Electronic Theses and Dissertations

The purpose of this dissertation was to discern the prevalence and magnitude of both exposure to traumatic events and Secondary Traumatic Stress (STS); as well as potential correlates of STS in a group of Probation and Parole officers in the state of Kentucky Department of Corrections (KY DOC). Participants (N=302) completed a written survey which asked them to indicate demographic variables (age, gender, and ethnicity), as well as several important occupational variables, namely years of experience in the KY DOC, caseload volume, prison work experience, and whether or not they are responsible for a sexual offender caseload. Participants were also …

Drone Location And Scheduling Problems In Humanitarian Logistics., Zabih Ghelichi

Electronic Theses and Dissertations

Unmanned Aerial Vehicles (UAVs), commonly referred to as drones, are a promising technology for the last-mile delivery of medical and aid items in humanitarian logistics. In emergency scenarios, like disasters, where transportation networks are destroyed and people are stranded, drones can accelerate the delivery of urgently needed items, e.g., food and water, insulin shots and blood pressure pills, to those trapped in the disaster-affected areas. Drones can also provide logistics services in many non-emergency situations by delivering medical items, e.g., vaccine shots and lab specimens, to remote communities and hard-to-access locations. The contribution of using UAVs goes beyond merely having …

Social Disorganization And Violent Crime Across Nonmetropolitan Areas Of Kentucky., Daniel Ray Jude

Electronic Theses and Dissertations

This macro-level study examines the effects of social disorganization predictors on violent crime registered in nonmetropolitan areas of Kentucky from 2012 to 2016. The study intends to expand the line of research interested in verifying the applicability of the social disorganization theory (Shaw & McKay, 1942), including its new theoretical developments, to non-urban settings and plans to contribute to the literature willing to provide a better understanding of violent crime in rural areas. In response to Narag et al.’s (2009) call for a theoretical integration of environmental contaminants among the ecological factors that influence variations in crime, the study also …

The Influence Of Dual Enrollment On Rural Student College Persistence., Jeanne Toure Guerrero

Electronic Theses and Dissertations

Using the High School Longitudinal Study of 2009 (HSLS:09), this study addresses the research question of whether dual enrollment (DE) influences first- to third-year college persistence at a four-year institution, controlling for gender, race/ethnicity, socioeconomic status (SES), and rurality. The results revealed that there are statistically significant differences between the independent variables of DE Participation, Gender, Race/Ethnicity, SES, and Rurality and the dependent variable of College Persistence. Controlling for other variables, the following main effects results emerged: Students participating in DE courses were more likely to persist than non-DE students. Female DE students were more likely to persist when compared …

A Remote Sensing Perspective: Mapping The Human Footprint In The Zambezi Region Of Namibia., Ariel E Weaver

Electronic Theses and Dissertations

The “human footprint” can be used as a general proxy to estimate human activities across the landscape. The human footprint in the Zambezi Region of Namibia is critically important for regional management of conservation efforts and land use planning. The land covers in the Zambezi Region are characteristically difficult to separate spectrally, due to a highly heterogeneous savanna landscape. Object Based Image Analysis (OBIA) and Random Forest (RF) methods are notable for their ability to improve classification accuracies of remotely sensed imagery. In this study, I investigate the extent of the human footprint in the Zambezi Region of Namibia, using …

Manifestations Of Students’ Voices: Examining Shifts, Academic Demands, And Identity Work In How Students Make Themselves Understood., Lauren Elizabeth Fletcher

Electronic Theses and Dissertations

Voice is a concept that is both highly sought after and elusive in education. While schools aim to foster students’ voices, many academic structures inadvertently conceal their voices and in turn their identities. Definitions of voice have been assumed, vague, or looked at as a writing trait, with little consideration of voices’ dynamic and mediated structures. Drawing on scholarship grounded in sociocultural theories and dialogism (e.g., Bakhtin, 1986; Engeström; 1987, Leont’ev, 1981; Rosenblatt, 1978; Vygotsky, 1978), I contribute a new, tangible definition of voice, in which voice is a dynamic happening, continually negotiated and constructed. This dissertation explores students’ voices, …

Visualizing Anhydrobiosis: Liquid-Liquid Phase Separation, Membraneless Organelles, And Cellular Reorganization., Clinton J. Belott

Electronic Theses and Dissertations

Water is an integral and necessary component of life. It is then, exceedingly remarkable that some species are capable of surviving virtually complete water loss for extended periods of time. Several decades of intense research into anhydrobiosis, or life without water, have given significant insights into the molecular mechanisms governing this phenomenon. Anhydrobiosis-related intrinsically disordered (ARID) proteins have been demonstrated to be critically important for desiccation tolerance in many anhydrobiotic species and exhibit a considerably wide range of protective properties that include membrane stabilization, reinforcing bioglass formation, and protein stabilization. This dissertation begins with cellular dielectrophoresis suggesting that two ARID …

First Principle Studies Of The Effects Of Alkali-Metal Intercalation On Structural Transition From Black To Blue Phosphorene And The Adsorption Of N2h4 On Ws2 Layers., Md Rajib Khan Musa

Electronic Theses and Dissertations

A comprehensive density functional theory calculation has been conducted to seek a potential structural transition from black to blue phosphorene layers, with a focus on the roles played by alkali-metal intercalation in black phosphorene/phosphorus. This study reveals that at sufficiently high Li concentration and specific, well-defined configurations, a phase transition from black to blue phosphorene can take place. The Li atoms intercalated in black phosphorene could act as a “catalyst” in the“reactive region” of the lone pair of P atoms, leading to a P-P bond breaking and, subsequently, a local structural transformation from an orthorhombic lattice to an assembly of …

Q-Griffithsin Interactions And Utility For The Prevention And Treatment Of Mucosal Infections., Henry Nabeta

Electronic Theses and Dissertations

Griffithsin (GRFT) is a carbohydrate binding agent (lectin) that was originally identified in the red alga Griffithsia sp. Q-Griffithsin (Q-GRFT) is an oxidation stable analog of GRFT. GRFT has demonstrated inhibitory activity against HIV-1, Coronaviruses, Hepatitis C, influenza and Ebola viruses. The broad-spectrum activity suggests the potential utility of this lectin in a wide range of viral infections. However, the lectin’s activity in mucosal infections has not been extensively studied. Using in vitro, ex vivo and in vivo assays, we have demonstrated that Q-GRFT maintains the ability to bind glycosylated ligands following incubation in murine, macaque and human rectal …

Exploring The Promotion Of Youth Voice And Activism By Youth Development Workers In Community-Based Programs., Rebecka M. Bloomer

Electronic Theses and Dissertations

Youth-adult partnerships (Y-APs) and youth voice promotion are best practices within the youth development sector, but youth development workers receive little training or guidance in employing these concepts. A scarcity of research explores the relationships between organizational supports, as demonstrated by training, supervision, evaluation, and worker engagement in promoting youth voice. The two studies within this dissertation investigated the social processes of how and why youth development workers promoted youth voice. Program participants were primarily youth of color living in areas of high multidimensional poverty. They also explored how and why organizational factors impacted the promotion of youth voice within …

An Exploration Of Afrocentric Features At A Black Homeschool Collective., Tytianna Nikia Maria Wells

Electronic Theses and Dissertations

This dissertation explores the development and benefits of familial relationships as the primary feature of Afrocentricity at Black Scholars Academy (BSA), a Pre-Kindergarten (Pre-K) through 12th-grade Black homeschool collective in the United States. This qualitative study draws upon Afrocentricity as a theoretical framework to analyze and interpret data collected from classroom observations, individual interviews with current and former teachers and students, and textual artifacts between July and November 2019. Familial relationships—an African time orientation, a personalized learning plan, OurStory, and Rising Meeting—are present in BSA. Familial relationships helped students develop cultural pride, agency, self-determination, independence, liberation through education, and a …

Effects Of Chemosensory Experience And Context On Consummatory Behaviors., Saphira M. Chiu

Electronic Theses and Dissertations

Eating food generates associations between odors and tastes (i.e., flavor) that guide future choices. Experience with an odor-taste mixture links an odor with a taste’s quality and hedonic value, resulting in a preference for an odor paired with a palatable taste over an odor paired with an unpalatable taste. However, experience with a neutral stimulus (i.e., latent inhibition) or environment (i.e., context) can influence the formation of conditioned associations. Here, I used a two-bottle brief-access task to determine whether rats display an innate preference between unpaired odors (isoamyl acetate and benzaldehyde), how preexposure to the unpaired odors impacts mixture-dependent consummatory …

The Forgotten Ones: A Qualitative Study To Understand The Phenomena Of Medically Disqualified Student-Athletes., Regina Chanel Johnson

Electronic Theses and Dissertations

The purpose of this phenomenological study was to gain a better understanding of the experiences of medically disqualified student-athletes (MDSA) at National Collegiate Athletic Association (NCAA) Division I institutions. This study is significant because few studies have examined MDSAs, yet they present concerns around career-ending injuries. Drawing on the Kübler-Ross Model of Death and Dying (1969) framework, this study examined if MDSAs have faced experiences in stage-like forms such as denial, anger, bargaining, depression, and acceptance. This study called the attention of athletic administrators to examine and develop support resources for this often-overlooked student-athlete group. Over five chapters, this dissertation …

Theoretical Investigation Of The Co-C Bond Activation In Methylcobalamin And Adenosylcobalamin-Dependent Systems: Mechanistic Insights., Arghya Pratim Ghosh

Electronic Theses and Dissertations

The vitamin B₁₂ derivates, otherwise known as cobalamin (Cbl), are ubiquitous organometallic cofactors. The biologically active forms of Cbl, such as methylcobalamin (MeCbl) and adenosylcobalamin (AdoCbl), act as cofactors in different physiological reactions for both prokaryotes and eukaryotes. A crucial aspect of the Cbl-mediated systems is the activation of the organometallic Co-C bond that plays a critical role in its catalytic activity. One of the most remarkable features of this Co-C bond is its unusual activation in AdoCbl-dependent enzymatic reactions, where a trillion-fold rate acceleration of the Co-C bond cleavage is observed inside the enzyme compared to the isolated …

Decisive Neutrality, Restricted Decisive Neutrality, And Split Decisive Neutrality On Median Semilattices And Median Graphs., Ulf Högnäs

Electronic Theses and Dissertations

Consensus functions on finite median semilattices and finite median graphs are studied from an axiomatic point of view. We start with a new axiomatic characterization of majority rule on a large class of median semilattices we call sufficient. A key axiom in this result is the restricted decisive neutrality condition. This condition is a restricted version of the more well-known axiom of decisive neutrality given in [4]. Our theorem is an extension of the main result given in [7]. Another main result is a complete characterization of the class of consensus on a finite median semilattice that satisfies the axioms …

Black Codes Re-Envisioned: The Dred Scott Majority Opinion As An Antiblack Performative Speech Act., Tiffany Dillard-Knox

Electronic Theses and Dissertations

This dissertation is a discursive analysis of the decision in the Dred Scott v Sandford, 1857 case written by Chief Justice Roger Taney. It begins with an overview of the literature on performative speech acts, focusing on the aspects of performatives that relate to Louis Miron and Jonathan Xavier Inda’s thesis that race is a performative speech act. Breaking from their use of race as the analytic, this analysis is situated within a black/nonblack paradigm. This provides a framework that focuses on the unique ways in which the discourse of the text enacts, accumulates and renders blackness fungible. The …

Collaborative Human-Machine Interfaces For Mobile Manipulators., Shamsudeen Olawale Abubakar

Electronic Theses and Dissertations

The use of mobile manipulators in service industries as both agents in physical Human Robot Interaction (pHRI) and for social interactions has been on the increase in recent times due to necessities like compensating for workforce shortages and enabling safer and more efficient operations amongst other reasons. Collaborative robots, or co-bots, are robots that are developed for use with human interaction through direct contact or close proximity in a shared space with the human users. The work presented in this dissertation focuses on the design, implementation and analysis of components for the next-generation collaborative human machine interfaces (CHMI) needed for …

A Practical Extension To The Ab/Ba Design, My T.A Nguyen

Electronic Theses and Dissertations

In this work, we take a close look at a general extension to the traditional AB/BA
crossover design that is commonly used in clinical trials to determine the effectiveness
of new candidate drugs. While the traditional crossover design requires each patient
in the study to be measured on both treatment A and treatment B, we consider the
possibility of additional measurements being available on each patient. This produces
designs such as the AABB/BBAA design which has been used in previous studies.
A general test statistic will be derived to test for treatment effects as well as its
corresponding power function …

Confidence Interval For The Mean Of A Beta Distribution, Sean Rangel

Electronic Theses and Dissertations

Statistical inference for the mean of a beta distribution has become increasingly popular in various fields of academic research. In this study, we developed a novel statistical model from likelihood-based techniques to evaluate various confidence interval techniques for the mean of a beta distribution. Simulation studies will be implemented to compare the performance of the confidence intervals. In addition to the development and study involving confidence intervals, we will also apply the confidence intervals to real biological data that was gathered by the Department of Biology at Stephen F. Austin State University and provide recommendations on the best practice.

Ledgers Of The W.T. Carter And Brother Lumber Company: An Archival Processing Project, Christopher Cameron Cotton

Electronic Theses and Dissertations

The W.T. Carter and Brother Lumber Company began in 1898 and operated until 1968 when it was sold to the U.S. Plywood Corporation. The Polk County, Texas company harvested longleaf pine during a crucial period of development for the Texas economy. The lumber industry was the state’s first large scale commercial enterprise not dependent on farming and provided a model for future extractive industries in the state. The W.T. Carter and Brother Lumber Company town of Camden, Texas exemplifies rural implementations of the company town system in the Texas lumber industry. This public history thesis provides a brief history of …

Soil Gypsum Content Analysis Of The Proposed Road Route Extension Of Fm 2185 In The Gypsum Plain, Culberson County, Texas, Chikaodili Ohakawa

Electronic Theses and Dissertations

Soils serve as the underlying substrate on which foundations for most structures are built. The properties of a soil type are therefore an important consideration in building engineered structures. Gypsic soils are problematic for construction of such structures. One of the main problems with gypsic soils is dissolution. Gypsum (CaSO₄·2H₂O) in soils dissolves easily creating voids which can be detrimental to the integrity of engineering structures. To mitigate this, it is important to determine the amount of gypsum present in soils, before construction is initiated.

In this study, three methods were employed in the determination of …

Effects Of Varying Warmup Stimuli On Running Economy, Connor Bigenho

Electronic Theses and Dissertations

Purpose: The purpose of this study was to determine the effects of two potentiating warm-up stimuli (weighted-vest strides and plyometrics) on running economy (RE) over short (5-10 minutes) and longer durations (30+ minutes) of exercise in trained distance runners. Methods: Five recreationally trained male runners were recruited to participate in this study. Each trial consisted of a 10-min self-paced warm-up on the treadmill followed by baseline RE test and baseline leg-stiffness. This was immediately followed by one of two intervention warmup protocols. The protocols consisted of either a series of plyometric movements, 6 x 10-sec strides with a …

Assessing Freezing Effect On Kiwifruit Cultivars And Mapping Suitable Areas For Growing The Crop In Eastern Texas, Lais De Oliveira Machado

Electronic Theses and Dissertations

Kiwifruit is a perennial vine originating from China where it has been grown for centuries. In the United States, green kiwifruit (Actinidia deliciosa) is primarily produced commercially in California. They are fuzzy, green fleshed and well known in the marketplace. Kiwifruit plants require low to moderate soil pH, adequate winter chilling and adequate precipitation to guarantee plant development and good fructification. Actinidia chinesis or golden kiwifruit are smooth skinned, feature golden flesh and are a more recent introduction into the global market. Kiwifruit crops have attributes that favor production in east Texas, including low pest problems, current long …

A Study Investigating The Experience Of Teachers’ Innovative Adaptation Of Teaching And Learning, Andrea Lowery

Electronic Theses and Dissertations

The purpose of this qualitative phenomenological study was to identify and examine the technology-based instructional strategies and digital tools being used by teachers in grades 3-5 that engage children in problem-solving learning opportunities. The study included 11 purposely sampled participants from a school district in East Tennessee who responded to questions during a Zoom interview. Seven of the participants submitted artifacts to provide examples of how they have incorporated technology and problem solving in their classrooms. Participants provided information about the digital tools and technology-based instructional strategies they have used to enrich problem solving in their classrooms. Participants in the …

Racial Diversity Of Texas School Teachers, Julie Ann Olguin-Phillips

Electronic Theses and Dissertations

There is a growing gap between the racial demographics of public-school teachers and their students. Teachers with demographic backgrounds similar to a school’s student population are often successful, particularly in Title 1 schools with high proportions of minority students; however, teacher turnover is high. The students in Texas public schools are a growing minority-majority population. Changes in the student body racial composition and other school-related variables could influence teacher workforce demographics. The focus of discussion of this quantitative research study is to determine the factors that predict the racial diversity of teachers in Texas high schools. The research questions addressed …

Natural Regeneration Dynamics And Survival Influenced By Abiotic And Biotic Factors In A Bottomland Hardwood Forest, Lydia J. Voth Rurup

Electronic Theses and Dissertations

Riparian ecosystems are vital to the landscape, providing critical services including water filtration and purification, flood and erosion control, carbon sequestration, biodiversity support, and aesthetic value. Bottomland hardwood forests, however, are threatened by invasive species, land loss/conversion, inconsistent or absence of harvesting disturbances, and altered hydrological patterns, leading to reduced success of desired, native species. This research assessed regeneration dynamics and one-year survival in a seasonally-flooded bottomland hardwood forest at Boggy Slough Conservation Area in East Texas to identify abiotic and biotic factors important for successful establishment of native regeneration. Areas sampled included two that were previously treated with herbicide …

The Role Of Embodied Metaphor In The Relationship Between Vestibular Dysfunction, Anxiety And The Self, Kaitlyn Abrams

Electronic Theses and Dissertations

There is considerable evidence that vestibular dysfunction and anxiety are correlated. Clinical and philosophical arguments suggest that a loss of sense of self, experienced through symptoms like derealization and depersonalization, might contribute to this relationship. The present study used a mixed methods approach, including Systematic Metaphor Analysis, to analyze written short answer and quantitative survey data from one hundred and thirteen participants with vestibular disorders. The Systematic Metaphor Analysis revealed several primary metaphor concepts which elucidated the connections between concrete experience and abstract concepts in vestibular dysfunction. These included metaphors of Agency, Stability, Orientation, Self-Object, and Figure-Ground. Primary metaphors for …