Digital Commons Network^™

How Do You Ask Questions? A Thematic And Discursive Analysis Of Question-Asking In Stranger Conversations, Nicholas Elliott

Dissertations

This study used a mixed-methods approach to explore how questions are used in casual conversations between strangers. While conversation has long been studied by linguists, sociologists, anthropologists, and psychologists, a methodological divide persists: conversation analysis versus experimental approaches. Despite extensive research, the rules guiding question-asking in conversation remain unclear. This study integrates both conversation analysis and experimental literature to investigate the role of questions in interactions with strangers. The research began with a quantitative content analysis of questions drawn from a set of recorded conversations known wholly as the Candor Dataset, informed by Brown and Levinson’s politeness theory, which suggests …

Unraveling The Antiviral Mechanisms Of Bat Cells: Processing Of Genomic Rnas By Dicer In Bat Cells Limits Sars-Cov-2 Replication, Iyanuoluwani Owolabi

Dissertations

Bats are reservoirs for numerous viruses that cause serious diseases in other animals and humans. Several mechanisms are proposed to contribute to the tolerance of bats to these pathogens. This study investigates the response of bat cells to double-stranded RNA generated by SARS-CoV-2 replication. Here, we found the involvement of Dicer in the processing of viral genomic RNAs during SARS-CoV-2 infection. Examining RNA sequencing of infected cells, small-interfering RNA (siRNA)-like fragments were found derived from viral RNAs. Depletion of Dicer showed a reduction in these RNAs and an increase in viral loads suggesting unlike other mammals, bats may use Dicer …

Perceptions Of Choral Diction Curricula, Caitlyn Dixon

Dissertations

This study proposed to provide in-depth insights into the current status of the efficacy of diction curricula, as well as to seek ways for enhancing the curricula to better support a culturally diverse musical experience. 21st century choral music encompasses languages and music from all over the world. While this diversity is crucial to the idea of a global choral community, it necessitates choral conductors to be scholars of diction, which includes creating the appropriate sounds for a given language. For a conductor to confidently perform in global languages requires skills, resources, and tools. This study examined the diction coursework …

Here Be Dragons: The Barriers Of Korean American Female Leaders In Secondary Schools, Joyce A. Kim

Dissertations

In K-12 public schools, there is a shortage of Korean American women in school leadership roles at the secondary level. This phenomenological study explores the contributing factors to this lack of representation, how institutions can recruit and retain Korean American female leaders, and how school systems can better support them. This study examines the leadership experiences of eight Korean American women. It utilizes the socio-political contexts of Korean patriarchy, the Model Minority Myth, and mentorship to help frame the problem of existing barriers. This study explores the following questions: What factors hinder Korean American women in school leadership? What structural …

Shades Of Families: Exploring Intersectionalities Of Cross-Cultural Parenting Experiences In The U.S., Shu-Han Huang

Dissertations

As multiracial and multicultural families continue to grow across the United States, parents must navigate evolving cultural identities, systemic inequities, and increasing social and emotional pressures. These realities underscore the need for parenting resources that are both culturally responsive and emotionally supportive. This transcendental phenomenological study explored the lived experiences of 11 cross-cultural parents raising children in the U.S., with a focus on how intersecting identities and systemic forces shape parenting practices.

Guided by Critical Multiracial Theory and Intersectionality Theory, this study investigated parenting at the personal, familial, societal, and structural levels. Data were collected through semi-structured interviews and analyzed …

The Paraprofessional-To-Teacher Experience: Moving From The Margins To Front And Center, Joanna Kerster Ross

Dissertations

This study outlined a qualitative case study research of paraprofessionals from marginalized communities. The purpose of this case study was to investigate the barriers that nontraditional students enrolled in the Metropolitan School of Teaching program experience when earning a teaching degree and working as a paraprofessional, as well as the sociocultural influence(s) that help them develop their teaching philosophy, with a focus on Culturally Responsive Pedagogy (CRP). Paraprofessional hiring pools have tended to be more diverse than teacher hiring pools and changing demographics across the nation could highlight the importance of CRP approaches in education (U.S. Department of Education, 2023; …

Evaluating The Indirect Effect Of Microaffirmations On Intersecting Marginalized Identities And School Sense Of Belonging Among School Psychology Graduate Students, April Pratt

Dissertations

There is a discrepancy between the proportion of school psychologists identified as racially, ethnically, or linguistically diverse (REL) in the United States and the proportion of REL students they serve (Blake et al., 2016; Proctor & Owens, 2019). Current data estimates over 80% of school psychologists identify as white (Goforth et al., 2021), whereas more than 50% of U.S. public school students have non-white racial/ethnic identities (Irwin et al., 2024). In addition to increased recruitment of REL students to school psychology graduate programs, trainers in these programs must implement effective strategies to ensure retention. One method is to increase students’ …

Examining The Effects Of Aryl Hydrocarbon Receptor Activation On Gut Immune Responses, Aspen Elizabeth King

Dissertations

Previous studies conducted in our laboratory suggest that activation of the aryl hydrocarbon receptor (AhR) activation with the prototypical ligand 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) initially suppresses both fecal and serum antigen-specific IgA responses, but fecal antigen-specific IgA levels recover from suppression while serum IgA levels do not. The purpose of the research detailed in this dissertation was to explore two potential mechanisms allowing for the more rapid recovery of antigen-specific IgA in the feces relative to the serum: (1) an increase in myeloid-derived suppressor cells (MDSCs) that enhance IgA antibody responses in intestinal tissues, and (2) an increase in the migration of …

Efficacy Of A Novel Role-Playing Based In-Class Simulation On Enhancing Clinical Judgment Skills In Senior Baccalaureate Nursing Students, Melodie Jolly

Dissertations

Clinical judgment is a critical skill for nurses, directly impacting patient outcomes and quality of care. However, studies have shown that newly graduated nurses often lacked sufficient clinical judgment abilities to meet the demands of increasingly complex patient populations. This quasi-experimental study aimed to evaluate the efficacy of a novel role-playing based in-class simulation designed to enhance clinical judgment skills among senior baccalaureate nursing students. The study employed a single-group pre-assessment and post-assessment design using Lasater’s Clinical Judgment Rubric (LCJR) as the primary measurement tool. Using a convenience sample, 37 senior nursing students who enrolled in a Term 4 clinical …

Student Self-Assessment Of Learning To Foster Improved Self-Reflection Of Learning And Academic Achievement, Leann Renee Doerr

Dissertations

Throughout her career and most notably post-pandemic, the scholar practitioner observed an increase in students giving up when encountering rigorous academic content and assignments. During the research process, concepts of student agency and self-regulation of learning, which were new to the scholar practitioner, came to the forefront of skills her students either lacked or needed to improve upon. Empathy generators were gathered for participants at Context School #1, which led to Student agency and self-regulation of learning becoming the center of the intervention during the design thinking process. The Self-Assessment of Learning, created and modified during the design thinking phases, …

The Shifting Landscape Of Harm: Investigating The Phenomenon Of Concept Creep In Harm Perception, Jefferson Sherwood

Dissertations

Concept creep, the gradual semantic expansion of harm-related concepts (Haslam et al., 2020), is a phenomenon garnering increasing attention in the field of psychology and is examined in the context of shifting perceptions of what is considered harmful. While what is considered harmful has shifted throughout generations, why these shifts happen and what motivates society to accept these broadening definitions has yet to be explained. Up to this point individual differences such as activism, risk, empathy, stressful life events, and dark triad personality have yet to be investigated as potential contributors to the expansion of harm-related concepts. Thus, this group …

The Effects Of Retrieval Practice On Knowledge Acquisition And Durable Learning In Undergraduate Nursing Students, Jessica Everritt Gay

Dissertations

Recent reports of unpreparedness and failure to rescue incidents among new graduate nurses are concerning for nurse educators and health care. New graduates must retrieve and apply learned knowledge to make sound clinical decisions, emphasizing the need for durable learning and knowledge acquisition. Durable learning, which involves understanding and recalling learned information days, weeks, or months later is crucial for clinical judgment. Nurse educators should facilitate durable learning through effective, evidence-based learning techniques such as retrieval practice (RP), which has shown promise in health professions education but is underutilized in nursing education.

This study explored the impact of RP on …

Learning The Musical Elements From An Early Age Through The Use Of Traditional Folk And Popular Tunes In The Mother Tongue And A Compendium Of Music Resources In Spanish For General Music Classes, Román Orlando Carranza Zapata

Dissertations

This document intends to fulfill three primary purposes. One is to explore the principal characteristics of early music education methods regarding teaching and learning music from an early age through the mother tongue, also known as their native language. These methods may suggest other strategies such as: playing and singing children's games, singing traditional folk tunes, improvisation, dancing, or playing instruments for the general music classroom. The second purpose is to provide music educators with a compilation of various music resources written in Spanish, such as pedagogical books, workbooks, and online interactive musical platforms that can be used in the …

El Salvador’S Cultural Memory And María De Baratta’S Piano Music: Kushkatan, Nahualismo, And The Representation Of Indigeneity, Alejandro Jose Arroyo Alberto

Dissertations

Following independence from the Viceroyalty of New Spain between 1821 and 1823, the United Provinces of Central America entered a period of cultural redefinition, as emerging national frameworks sought to integrate diverse ethnic and historical legacies. After a century, in early twentieth-century El Salvador, a revival of Kushkatan—a pre-Hispanic Indigenous territory within present-day El Salvador—gained symbolic traction among intellectual elites during a politically volatile era marked by social upheaval and cultural realignment. Within this historical context, Cuzcatlán Típico (1951) by María de Baratta, published by the Ministry of Culture, stands as the first ethnomusicological study dedicated to Indigenous music in …

Coming Back To Life: Inner Work, Intentional Containers And Feminine Leadership For Social Change — A Phenomenological Case Study Of A Social Change-Oriented Organization And The Self, Maria Trias Arraut

Dissertations

This qualitative study explores the phenomenon of inner work within social change organizations through an in-depth case study of a nonprofit organization dedicated to women’s empowerment and transformation. Using a phenomenological approach and ethnographic methods, the research combines intensive 7-month fieldwork in 2016 with reflective analysis years later, shaped by my own evolving relationship with inner work practices, providing a unique perspective on how inner work lived experience shapes individuals, organizational culture, and social change efforts.

The findings reveal that the social change organization (SCO) operated through three distinct yet interconnected levels of inner work practice: tending to the personal …

Utilization Of Imidazolium Ionic Liquids For Enhanced Oil Recovery In Harsh Emirati Tight Carbonate Oil Reservoirs, Noran Hussein Mousa

Dissertations

In response to the increasing global demand for energy and the limitations of traditional chemical oil recovery methods, this study explores the potential of imidazolium-based ionic liquids (ILs) as enhanced oil recovery (EOR) agents for Emirati tight oil reservoirs. Four ILs—C10mimCl, C12mimCl, C12mimBF4, and C16mimBr—were evaluated for their effects on the interfacial tension (IFT), wettability, emulsification, and rheological properties under reservoir conditions. Experiments conducted at varying salinities, temperatures (up to 110°C), and IL concentrations (500–3000 ppm) demonstrated that longer alkyl chain ILs, particularly C16mimBr, effectively reduced IFT by >99% and improved wettability by lowering contact angles down to 15.37°. Statistical …

E-Learning In Developing Countries: Unveiling Faculty Digital Realities, Dauran Mcneil

Dissertations

Faculty in developing regions like the Caribbean play a crucial role in shaping education systems and the broader academic landscape. In this era of technology and e-learning, faculty encounter unique experiences, perceptions, and challenges that influence their roles, effectiveness, and the learning environment. This qualitative phenomenological study examined the perceptions, experiences, and challenges of e-learning among higher education faculty in developing countries, particularly in the English-speaking Caribbean region. A qualitative phenomenological approach was used to gain a deeper understanding of the lived experiences of 11 faculty members from Antigua and Barbuda, Barbados, Belize, Jamacia, St. Lucia, and the Bahamas. These …

Structural And Functional Characterization Of The Sos Pathway Genes (Sos1, Sos2, And Sos3) In Avicennia Marina: Insights Into Salinity Stress Tolerance, Mariam Obaid Alzaabi

Dissertations

Abiotic stress is a major challenge for agricultural productivity. Salinity stress is a vital environmental constraint that significantly limits plant growth and reduces crop yield worldwide. Halophytes, such as Avicennia marina, offer unique opportunities to dissect adaptive mechanisms underlying salt tolerance. This study focuses on the structural and functional characterization of the Salt Overly Sensitive (SOS) pathway genes (SOS1, SOS2, and SOS3) from A. marina. Full-length cDNAs of AmSOS1, AmSOS2, and AmSOS3 were cloned and characterized. The sequence analysis of these genes compared to the respective orthologs revealed high similarities and conservation of all …

The Problem Of The Whiteness Of Wealth, Elizabeth Tharakan

Dissertations

In 2021, households with a White householder made up 65.3% of all U.S. households and held 80.0% of all wealth. Those with a Black householder made up 13.6% of all U.S. households but held only 4.7% of all wealth. And their median wealth ($24,520) was about one-tenth the median wealth of households with a White householder ($250,400). This disparity in Black wealth and White wealth is almost an order of magnitude. I seek to understand why the racial wealth gap exists and what people of any race can learn from a nuanced understanding of the interplay among culture, education, and …

Getting The Unbanked, Banked: An Adult Education Intervention Program To Increase The Usage Of The Banking System By Low-Income Families, Orlando A. Smith

Dissertations

Financial literacy describes the skills, knowledge and tools consumers use to make informed financial decisions to meet their goals. The purpose of this study was to determine how many consumers utilize the resources offered by banks and credit unions and for those who do not, after participating in an intervention, will begin to do so. The Transtheoretical Model of Behavior Change served as the theoretical framework. It has been shown to be a useful model to examine adults’ change in financial behaviors. The sample consisted of 65 adults who lived within specific zip codes in a large metropolitan area in …

Warriors And Guardians: Police Recruit Role Orientation And Heterogeneity, Robert Boxerman

Dissertations

American police have experienced an expansion of duties over the last century, and their function has become increasingly diverse. As a result, researchers have developed role orientation typologies to understand how officers view themselves, their attitudes toward their work, and their responsibilities. One such typology is the warrior/guardian framework, where warrior-oriented officers see themselves as crime-fighting soldiers in conflict with criminals, while guardian-oriented officers view themselves as protectors of the community and providers of broader public services. Despite its popularity, there is limited empirical evidence supporting this framework. Further, little research examines how police recruits differentially view their role as …

Deadtime In The Vale Of Soul-Making: Hermeneutics, Humanization, And Higher Education In Prison, Dale Michael Brown

Dissertations

This body of work examines higher education with and for justice-involved people from a descriptive, theoretical, and empirical perspective—pulling together multiple disciplines and employing different methodologies from the humanities and social sciences. The investigation is written from a philosophical perspective via educational foundations and a social science perspective via qualitative research, including an examination of carceral higher education’s connections to teaching and experiential learning. This approach reflects the interdisciplinary nature of both the author’s degree program and the topic itself, which (as a field of academic inquiry) is part theoretical and part empirical (both qualitative and quantitative). The papers in …

A Multiple Case Study Of Four-Year Public, Non-Flagship Universities: Meeting Common Institutional Goals Of Increased Enrollment And Academic Profile, Alicia Kornowa

Dissertations

For several reasons, the number of students seeking and enrolling in a postsecondary education has started to decline in the United States (U.S.) and the decrease is expected to intensify for the foreseeable future. This trend is cause for concern among higher education enrollment leaders, especially those who serve at institutions not among the most elite universities or without a national brand—the campuses researchers project will have the greatest difficulty maintaining enrollment levels. Using strategic enrollment management (SEM) as an example of general systems theory and systems thinking, this multiple case study explored how four public, four-year, non-flagship institutions increased …

Quadratic Stochastic Processes: Algebraic Structures And Their Applications, Taimun Saleh Qaisar

Dissertations

This research focuses on the algebraic structures of the Quadratic Stochastic Processes (𝑄𝑆𝑃𝑠). In this work, we first study 𝜉𝑎- Quadratic Stochastic Operators (𝑄𝑆𝑂𝑠) linked to the partition P3. We simultaneously discuss the dynamics of the obtained 𝑄𝑆𝑂𝑠. Moreover, algebraic structure of the associated genetic algebra is studied. Further, we build Quadratic Stochastic Processes (𝑄𝑆𝑃𝑠) using the given Markov processes. Consequently, we obtain an ordinary differential equation for the resultant Quadratic Stochastic Processes (𝑄𝑆𝑃𝑠). Besides, we apply the solution of this ordinary differential equation for the option pricing problem. Thereafter, we construct Quadratic Stochastic Processes (𝑄𝑆𝑃𝑠) in three-dimensional space by …

Development Of Al Ain Flash Flood Risk Maps\ Utilizing High-Resolution And Accurate Remote Sensing Data, Khaled Khamis Al Arfati

Dissertations

Al Ain City has undergone significant land use transformations from 1992 to 2022, marked by a population increase of over 50% and extensive development activities. This period has seen the construction of new residential areas, infrastructure, and commercial establishments, as well as enhancements to green spaces. An analysis of the Digital Terrain Model (DTM) revealed an 83% alteration in the terrain due to urbanization and shifting sand dunes, with most elevation changes under 5 meters.

The primary aim of this dissertation is to develop accurate flash flood risk maps for

Al Ain using high-resolution remote sensing data. This research highlights …

The Cellular Trafficking And Targeting Of Angiotensin-Converting-Enzyme-2 (Ace2) And Neutral-Amino-Acid-Transporter (B0at1) Variants: Implications For The Pathogenesis Of Associated Diseases And Therapy, Nesreen Fayyad Alkhofash

Dissertations

Angiotensin-converting enzyme 2 (ACE2) and the neutral amino acid transporter B0AT1, encoded by SLC6A19, are membrane proteins with pivotal roles in human physiology. ACE2 is involved in regulating blood pressure and serves as the cellular entry receptor for SARS-CoV-2, while B0AT1 facilitates amino acid absorption in the intestine. The interplay between ACE2 and B0AT1, particularly their physical interaction and co-expression in the intestine, underscores their relevance in both normal physiology and disease. Dysregulation of these proteins has been implicated in conditions such as hypertension, and Hartnup disease and they have been usurped by SARS-CoV-2 to cause COVID-19. Despite their …

Exploring Date Pomace As A Functional Ingredient In Bread: Nutritional And Functional Properties, Alaa Almoumen

Dissertations

This study investigated the incorporation of desugared date fruit pomace into wheat bread rolls and evaluated its effects on dough handling, bread quality, staling behavior, sensory acceptability, and nutritional composition. The research was conducted in three experimental phases: (i) development and characterization of a high-fiber dietary ingredient (HFDI) from date pomace, including its physicochemical and functional properties; (ii) bread fortification and quality assessment, where wheat flour was partially replaced with 0–20% HFDI to evaluate its effects on dough rheology, bread texture, color, moisture retention, shelf life, and consumer acceptance; and (iii) nutritional and physiological evaluation of the fortified breads, including …

An Investigation Into The Effectiveness Of High School Models Of Instruction In English Language Arts For Exceptional Education Standard Diploma Students, Lori A. Rath Minton

Dissertations

This study examined the effectiveness of high school instructional models in English Language Arts (ELA) for Exceptional Student Education (ESE) students pursuing a standard diploma. The purpose was to compare self-contained and inclusion models within the framework of the Individuals with Disabilities Education Act (IDEA), emphasizing Free and Appropriate Public Education (FAPE) and the Least Restrictive Environment (LRE). The research was conducted in a medium-sized rural district high school.

The overarching research question was: Based on student test scores, ESSA data, surveys, and interviews with content area teachers, ESE teachers, paraprofessionals, support facilitators, and administrators, how effective are self-contained and …

Roses And Concrete: Black Teachers' Roles And Challenges In Marginalized Communities, Alyse N. Barry

Dissertations

Black educators play a vital role in schools that serve marginalized communities, yet their stories are often overlooked in academic research. This phenomenological study explores how Black teachers interpret their roles and navigate challenges within these spaces. Using Interpretative Phenomenological Analysis (IPA), I centered the voices of ten Black educators to better understand the emotional, cultural, and professional layers of their experience.

Through in-depth interviews, participants described themselves as more than just instructors. They saw themselves as cultural connectors, advocates, and protectors for their students. Their presence helps affirm student identities and bridge cultural divides, but they also carry significant …

Refinement Of Megakaryocyte Lineage Commitment In Hematopoietic Stem And Progenitor Cells During Postnatal And Adult Hematopoiesis, Ryan Michael Mack

Dissertations

Mammalian hematopoiesis ensures the continuous production of specialized blood cells, yet the mechanisms that govern megakaryocyte/erythroid (MK/E) bifurcation remain incompletely understood. While HSPCs sustain all blood lineages, how transient waves of progenitors arise and adapt from fetal to adult stages is less clear. This gap in knowledge limits our capacity to precisely manipulate platelet and red blood cell outputs in both developmental and therapeutic contexts. Using refined gating strategies and various bulk- and single-cell transcriptomics, we dissected the traditional “common myeloid progenitor” and Multipotent Progenitor (MPP) compartment into multiple functionally distinct subsets (C1, C2, C3). Within C1, an ESAM⁺ fraction …