Digital Commons Network^™

How Principals Who Use Artificial Intelligence For Innovation Create Cognitive Equity While Principals Who Use Ai For Efficiency Create Cognitive Debt, Jethro Jones

Dissertations

This dissertation in practice examined whether a targeted professional learning   intervention could shift school leaders’ use of generative artificial intelligence (AI) from efficiency-oriented tasks toward innovation-oriented strategic problem solving. AI is typically adopted to accelerate existing routines, which can deepen “cognitive debt” by reinforcing ineffective practices rather than improving systems. This study advanced a “cognitive equity” frame, positioning AI as a tool that can expand principals’ cognitive capacity to address complex problems and lead adaptive change. Using a quasi-experimental, single-group design, the study evaluated a free, full-day AI for Innovation workshop, which emphasized foundational understanding of how AI tools work …

The Effects Of A Viniyoga-Based Practice On Mental Health Clinicians' Perceived Stress, Burnout, And Quality Of Life, Julie Pate

Dissertations

Psychotherapists often experience stress when treating distressed or emotionally troubled patients due to the emotionally taxing nature of their work, which can lead to burnout and other negative consequences (Bell et al., 2023; Maslach & Leiter, 2016; Simionato & Simpson, 2018) Therapists find it challenging to maintain regular self-care routines (Driscoll, 2023; Baker & Gabriel, 2021; Posluns & Gall, 2020). With the constant demand for counselors (Bureau of Labor Statistics, U.S. Department of Labor, 2024), there is a critical need for effective stress management strategies to mitigate burnout risks (Substance Abuse and Mental Health Services Administration [SAMHSA], 2022; Sibitz, Pils, …

Migrant Domestic Workers As Disposable Kin In Global Capitalism's Care Economy, Miguel Ceron Becerra

Dissertations

This dissertation examines the economic, emotional, and relational harms suffered by migrant domestic workers under global capitalism. These harms are systemic, stemming from labor and migration regimes designed to sustain capital accumulation in the care economy. Affluent regions benefit from the labor of migrant domestic workers at the expense of damage to their fundamental relationships. The result is the erosion of workers' kinship ties, rendering them "disposable kin" in the eyes of those who profit economically and emotionally from their work. The study is organized into four chapters. The first explores how global care chains are structured through labor and …

Changing Lanes, Crossing Industry Lines From Higher Education To Business Leaders: A Narrative Inquiry To Understanding The Challenges Faced By Residence Life Professionals Who Had To Change Career Paths Due To The Covid-19 Pandemic, Tatianna Geneva Ingram

Dissertations

This narrative inquiry examined how higher education residence life and housing professionals navigated career transitions into business leadership roles following the COVID-19 pandemic. Using human capital theory as a framework, the study explored the transferable skills cultivated in residence life positions and how these skills supported adaptation across industries. Participants’ narratives illuminated motivations for transition, including job market volatility, compensation concerns, and work-life balance, while also highlighting challenges encountered in reskilling and navigating identity shifts outside of higher education. The findings reveal the enduring value of competencies such as leadership, crisis management, diversity and inclusion expertise, and operational strategy in …

Revisiting Collective Efficacy: Insights From Cognitive Interviews And Experimental Surveys, Tori Kay Olson

Dissertations

This three-part study revisits the collective efficacy scale developed by Sampson and colleagues in the 1990s to see if the scale needs updating. Defined as community cohesion and social control, collective efficacy is often used in community research to explain crime rates. The first phase uses cognitive interviews to understand how survey respondents interpret the original collective efficacy survey. The interview data then helps create new versions of the ten questions in the second phase. In the third phase, ChatGPT generates a revised version of the collective efficacy scale. The study employs a split-ballot experimental survey to test whether the …

An Examination Of Lysine Acetylation In The Context Of Bacterial Metabolism, Translation, And Regulation Of Gene Expression, Thomas Patrick Bank

Dissertations

Post-translational modifications are a critical tool bacteria employ to survive the challenges of microbial life. Acetylation continues to gain more recognition as a modification of unique importance because the sources of acetylation – acetyl-phosphate and acetyl-coenzyme-A – are critical metabolites associated with central carbon metabolism, acetate overflow metabolism and acetate assimilation. This suggests that acetylation, indelibly coupled to metabolic flux, integrates metabolic sensing with any cellular process or pathway where an acetylation alters the function of a protein. Intuitively, this makes sense. Of course, a bacterial cell would coordinate any cellular process closely with the amount of energy available to …

How Elementary School Principals Equitably Support Mexican Indigenous Students Using The Cultural Proficiency Essential Elements, Veronica Hernandez

Dissertations

Purpose: The purpose of this qualitative study was to identify and describe how elementary principals used the essential elements of cultural proficiency (i.e., assessing culture, valuing diversity, managing the dynamics of difference, adapting to diversity, and institutionalizing cultural knowledge) to provide equitable access for Mexican Indigenous students in California. A second purpose was to identify what elementary principals recommended as best practices for implementing the essential elements of cultural proficiency. Methodology: This ethnographic qualitative research study utilized the elements of cultural proficiency to identify and describe the practices of California elementary school principals in equitably supporting Mexican Indigenous students. Using …

Rocket Injector Flowfield Characterization Through Local, Instantaneous Gas Composition Tracing Using Laser Induced Breakdown Spectroscopy, Michaela Renee Hemming

Dissertations

Laser induced breakdown spectroscopy (LIBS) was developed for applications in the characterization of rocket engine injectors to evaluate the instantaneous, local gas concentration, or local mixture ratio of the injector flowfield. In this work, LIBS was tested in steady flows of premixed methane and air to create the correlation of the LIBS spectral species ratios H/O ratio, followed by a steady non-premixed flow to extract the localized mixing and shape of the flow field, then a transient study was performed to measure the development of the flow of the reactants in a pentad impingement injector previously used in RDE tests. …

Integrating Military-Acquired Iso Quality Management Principles Into Civilian Employment: A Phenomenological Study Of Post-9/11 Veterans, Paul Encinias

Dissertations

Purpose: This qualitative phenomenological study explored how post-9/11 U.S. military veterans describe their lived experiences of understanding and applying four ISO 9001:2015 Quality Management Principles (leadership, engagement of people, process approach, and evidence-based decision making) during the transition to civilian employment. This study further sought to understand how veterans articulated these competencies across employment stages and how those competencies were recognized within civilian organizations.

Methodology: This qualitative phenomenological study used semistructured interviews with 10 post-9/11 U.S. military veterans residing in the United States who had separated from active duty and were engaged in the transition to civilian employment. Participants were …

Walking On A Tightrope: Women And Managers Navigating Maternity Leave And Return-To-Work, Rachel R. Kalvert

Dissertations

Purpose: This qualitative phenomenological study explored how professional women experience maternity leave and return-to-work, focusing on how managerial communication shapes perceptions of career, competence, belonging, and career progression. The study involved professional women who returned to the same organization full-time from 6 months to 3 years after maternity leave.Methodology: Fourteen professional women were recruited via snowball sampling and listservs. Data were collected through Zoom interviews. Participants completed a demographic questionnaire and received interview questions in advance. The interview guide aligned with the study's three questions. After the interview, participants reviewed AI-generated transcript summaries for accuracy; and participants were given a …

Influence Of The Solar Cycle And Interplanetary Shocks On Turbulence At 1 Au, Sujan Prasad Gautam

Dissertations

This thesis studies the effect of the solar cycle and interplanetary shocks on turbulent fluctuations at 1 AU. We examine the solar cycle dependence of turbulence cascade rates corresponding to the total turbulence energy using the methodology developed by Adhikari et al. that utilizes a Kolmogorov phenomenology. Turbulence cascade rates are derived using 25 years (1995–2020) of Wind spacecraft plasma and magnetic-field observations. We find that the total turbulence energy cascade rate changes with the solar cycle, such that the cascade rate is largest during solar maximum and smallest during solar minimum. It is positively correlated with the solar wind …

A Delphi Study: Communication Practices For Expert Elementary Administrators During Day-To-Day Crises On Elementary School Campuses, Anthony Michael Langford

Dissertations

Purpose: The purpose of this Delphi study was to identify the communication practices expert elementary school administrators consider the most effective for informing their district office, staff, students, parents, and the community during day-to-day crises. The study also evaluated the effectiveness of these identified practices and determined the best methods for implementing the top three practices in each area. Methodology: This Delphi study focused on three areas of research: (a) the practices expert elementary administrators use to communicate during day-to-day crises, (b) the way expert elementary administrators rate the effectiveness of those practices, and (c) the methods expert elementary administrators …

The Adolescent Development Of Small Business Owners’ Entrepreneurial Mindset, Fern Arredondo

Dissertations

Purpose: The purpose of this phenomenological study was to describe how small business owners in Southern California interpret experiences before age 20 that influenced the development of the eight domains of the Network for Teaching Entrepreneurship (NFTE) Entrepreneurial Mindset Index (EMI). This study used a qualitative phenomenological approach to explore how adult small business owners reflect upon and interpret experiences before age 20 that influenced the development of their entrepreneurial mindset. By examining the influence of pre-adulthood on these owners, the study aimed to deepen the understanding of how early experiences shape entrepreneurial mindsets and contribute to long-term entrepreneurial success. …

Principal Leader Behaviors That Create Meaning For Their Teachers To Reduce Stress And Burnout, Angelina Santana

Dissertations

Purpose: The purpose of this mixed methods study was to identify and describe the behaviors that exemplary high school principals use to create meaning for themselves and their teacher followers through relationships, character, vision, wisdom, and inspiration. In addition, the study aimed to determine the new teachers’ perceived degree of importance of the principal leader behaviors related to relationships, character, vision, wisdom, and inspiration to help create meaning.Methodology: The mixed methods convergent study design uses qualitative and quantitative means to collect and analyze data to understand how exemplary high school principals make meaning for their teacher followers. First, qualitative interviews …

A Qualitative Multiple Case Study Exploring Shifts In Thinking Of Principals Through Initiatives To Foster Relational Leadership Conducive To Retaining Teachers In High-Minority, High-Poverty Public Schools, Rita Seay

Dissertations

Problem

The public education system is broken, and teacher shortages have reached a crisis, especially in some specialty fields in United States (Carrillo & Salhotra, 2022; Podolsky et al., 2016). Lately, the teacher workforce has been described as a “leaky bucket” (Podolsky et al., 2016, p. 1). Indeed, the problems are complex in poor socioeconomic communities with racial and ethnic groups of students because teachers struggle to make a difference and, in most cases, fail due to insurmountable situations that are beyond their scope of influence (Rondfeldt et al., 2013). Evidence published that students suffer immensely from a broken, segregated …

Match Or Mismatch? : The Effects Of Fingerprint Evidence And Expert Testimony On Jury Decisions, Kassie N. Thallas

Dissertations

Fingerprint evidence is widely perceived as objective and reliable, yet is typically presented to jurors through expert testimony rather than directly evaluated. The present study examined how fingerprint match status and expert testimony influence juror decision-making. Participants (N = 225) read a mock criminal trial summary and were randomly assigned to one of five conditions. Four conditions were derived by crossing Expert Condition (fingerprint expert alone vs. conflicting experts) and Match Status (match vs. no match), with an additional control condition without fingerprint evidence. The participants made verdict decisions and rated the credibility, honesty and believability of the expert. The …

Exploring Detached Concern, A Dual-Process Emotional-Regulation Strategy, Among Intensive Care Nurses Providing End-Of-Life Care In The United States, Melissa Milton Miasek

Dissertations

Intensive care unit (ICU) nurses repeatedly provide end-of-life care (EoLC) and experience significant emotional distress, burnout, and moral distress that can lead to leaving the profession. Detached concern (DC), a dual-process emotional-regulation strategy which balances empathetic concern with emotional detachment, may support ICU nurses' emotional well-being; however, DC among nurses remains vastly understudied. This qualitative descriptive study gained deeper understanding of DC among ICU nurses providing EoLC in the United States. The study was guided by a conceptual model adapting Lampert and Glaser's dynamic DC process within Elfenbein's emotional regulation framework. The overarching research question explored ICU nurses' perspectives on …

A Computational Investigation Of The Deposition Of Firebrands Subject To A Turbulent Jet Flow, Patrick Wayne Damiani

Dissertations

To improve the understanding of the role of firebrands in fire spread, the dispersion and deposition of firebrands carried by turbulent jet flows were simulated by Lagrangian particle tracking and large--eddy simulation. The simulations were configured to replicate previous experiments involving cubiform and cylindrical particles carried by pipe flow and the resulting jet flow before deposition on the ground. First, validations were performed for the jet flow simulations by comparing quantities such as the jet spread rate and velocity decay constant with previous experimental and theoretical values for free jet flows. Then, two series of simulations were performed to evaluate …

Comprehending Levels Of Explainability And Ai Recommendations (Clear) Study Series, Virginia Sullivan

Dissertations

AI systems can offer a great deal to improve decision-making through efficiency and predictive accuracy due to their unique ability to rapidly analyze large amounts of data relevant to the decision. Yet many AI systems remain opaque, limiting users’ ability to evaluate outputs and leading to issues of mistrust or over-reliance. This dissertation investigates how varying levels of AI explainability affect trust, perceived reliability, understanding, and confidence, and identifies perceptual and behavioral indicators of over-reliance behavior in AI-assisted decision making scenarios. This dissertation is organized as a three-study series. The CLEAR survey study uses a mixed design to examine the …

Leadership Studies In The Master Of Divinity (M.Div.) Curricula Of The Southern Baptist Convention (Sbc) Seminaries, Todd Stinnett

Dissertations

This dissertation chronicles the pursuit of an answer to the following question: In what ways have Southern Baptist Conventions (SBC) seminaries incorporated leadership studies into the curricula of their Master of Divinity (M.Div.) programs? This dissertation is a qualitative, multi-site case study that utilized a descriptive method of research. The research also utilized a qualitative interview that asked seminary administrators about their understanding of leadership studies and the place of those studies in the leadership courses that each seminary provided. One administrator from each of the six SBC seminaries was interviewed for this research. Content analysis was used to discover …

Constructing Effectiveness: Culture, Legitimacy, And Strategic Planning In Zoos And Aquariums, Robin Keith

Dissertations

Zoos and aquariums are complex organizations operating with multiple mandates—saving species, providing exceptional care to animals, connecting communities with nature, and inspiring environmental action—making “effectiveness” difficult to define. What counts as success depends on who is asked and which goals are foregrounded. This study investigated how stakeholders in Association of Zoos and Aquariums (AZA)–accredited organizations conceptualize and operationalize effectiveness within strategic planning processes. Prior research on nonprofit and mission-driven organizations has shown effectiveness is multidimensional and often defined differently by various stakeholders. However, little has been known about how these definitions are negotiated through the practice of strategic planning, …

Investigation Of A Flux Compression Magnetic Nozzle For Pulsed Plasma Propulsion, Zachary K. White

Dissertations

A key part of any propulsion system is how the energy of the propellants is used for thrust. Because of the high temperatures of nuclear fusion plasma, traditional methods like guiding the propellant with walls are not feasible, so instead, electromagnetic forces must be used to avoid physical contact between the propellant and the vehicle. Usually, to do so the physical nozzle is replaced by a magnetic nozzle where the physical walls are replaced by magnetic fields. This thesis focuses on the direct imaging and probe measurements of a laser produced plasma expanding into a magnetic field as analogous event …

Threatened To Testify : Juror Perceptions Of Coercive Eyewitness Interviews, Alexa A. Mecikalski

Dissertations

The effects of coercive investigative questioning techniques have been extensively studied in the context of suspect interrogations; however, few studies have evaluated outcomes related to coercive questioning of eyewitnesses. Therefore, the present study investigated mock juror perceptions of the use of interrogation tactics during eyewitness questioning. Participants read a trial summary and provided trial judgments (e.g., verdict, eyewitness credibility, perceived coerciveness of the interview) pertaining to a case in which an eyewitness is questioned using either (1) maximization tactics (e.g. high pressure questioning, threats), (2) minimization tactics (e.g., minimizing severity or consequences), or (3) no tactics (e.g., statement provided voluntarily). …

Diffusion Behavior Of Uranium Fission Products In A Centrifugal Nuclear Thermal Rocket, Mitchell Schroll

Dissertations

Centrifugal nuclear thermal rockets (CNTR) are an advanced concept engine first proposed in the 1950’s that would allow for specific impulses of up to 1800 seconds. A major difference in this engine is that the liquid fuel allows for fission products to move through the fuel layer and even exit out of the reactor completely. This dissertation seeks to answer the question, how does the migration of fission products within a centrifugal nuclear thermal rocket affect its operation and performance?” To accomplish this a reduced order model was developed to simulate and track the fission products generated during the firing …

An Incremental Approach For Recovering Decompiled Variable Data Types Using Graph Neural Networks With Learned Confidence Estimates, Caleb Stewart

Dissertations

When software is compiled into machine code, the high-level data types defined in the original source code are lost. Binary type inference is the process of attempting to recover these high-level data types from compiled binary code. This dissertation investigates binary type inference using graph neural networks (GNNs) to predict data types for decompiled variables. The study is organized into three phases. Phase one presents DRAGON, a GNN model that predicts simple data types for decompiled variables using input graphs derived from decompiled abstract syntax trees (ASTs). DRAGON also produces confidence estimates indicating the degree of faith the model places …

Exploring Cultural Competence Of Alabama Nurse Educators : A Mixed Methods Study, Rachel Bloodworth

Dissertations

Cultural competence is a vital skill in nursing practice and nursing education. Nurse educators must be able to teach this concept and prepare students to provide culturally competent care to patients. This study examined the cultural competence of Alabama pre-licensure nurse educators in associate degree nursing (ADN) and baccalaureate (BSN) programs and explored their perceptions of cultural competence's role in nursing education. An explanatory sequential mixed-methods design was employed, guided by Campinha-Bacote's Process of Cultural Competence in the Delivery of Health Care Services Model. In Phase I, 51 nurse educators completed the Cultural Diversity Questionnaire for Nurse Educators-Revised (CDQNE-R) and …

Utility Of Model-Based And Probabilistic Approaches For Rocket Engine Affordability : Exemplified On The Rs-25 Engine, Shreyas Lakshmipuram Raghu

Dissertations

Rocket engine development has historically relied on test–fail–fix (TFF) methodologies to uncover structural and fatigue deficiencies under representative operating conditions. While effective, TFF is inherently costly and schedule-intensive, often revealing life-limiting behavior late in the development lifecycle. The increasing use of additive manufacturing (AM) amplifies this challenge by introducing material property scatter and process-induced variability. Without explicit early treatment of uncertainty, these effects can increase reliance on physical testing and drive additional TFF cycles. This work presents a reliability-driven life-consistent design-bounding framework intended as an early lifecycle decision-support tool to assess and mitigate TFF risk. Although material variability is inherently …

Exploring Pregnancy-Related Empowerment And Person-Centered Prenatal Care In Black Pregnant And Postpartum Women In Alabama, Lauren Milam

Dissertations

Black women in the United States experience disproportionately high rates of maternal morbidity and mortality and often report feeling unheard, dismissed, or excluded from decision-making during pregnancy and childbirth. Understanding how Black women experience prenatal care and how those experiences relate to empowerment during pregnancy is essential for improving care and addressing persistent inequities. This study examined the relationship between person-centered prenatal care and pregnancy-related empowerment and explored Black women’s prenatal care experiences in Alabama using a sequential Quan → QUAL mixed methods design. In the quantitative phase, relationships among person-centered prenatal care, pregnancy-related empowerment, and care-related factors were examined …

Large Scale Cold Fronts In Sloshing Galaxy Clusters, Matthew Sundquist

Dissertations

Galaxy Clusters are the largest virialized structures in the universe, with the majority of baryonic matter being made up of the intracluster medium (ICM), a diffuse plasma between the galaxies in the cluster. The large mass of galaxy clusters heats up the ICM to high temperatures, causing it to emit x-rays. When a cluster is left unperturbed, the center of a cluster cools at a faster rate than the outer regions due to the increased mass density and rate of x-ray production. At a later time, after the center of the cluster has had enough time to cool, another cluster …

Human Perceptions Of Social Intelligence In Large Language Models, Derek Koehl

Dissertations

This dissertation investigates how users form perceptions of social intelligence and trust when interacting with large language model chatbots. Three experimental studies manipulated chatbot agreeableness, goal orientation, and simulated short-term memory, measuring perceived social intelligence and trust. The primary finding is an asymmetric effect of personality: disagreeable chatbot behavior produced large reductions in perceived social intelligence and trust, whereas agreeable behavior produced negligible gains above a warm baseline, consistent with negativity bias in social cognition. Goal orientation did not independently enhance perceptions but functioned as a contextual moderator. Simulated memory produced medium-to-large increases in perceived social intelligence without reliably increasing …