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Dynamic Control Of Active Optical Structures Using Fea-Derived State-Space Models, Damian Suarez

Theses

Active optical systems commonly use influence coefficient methods to map actuator commands to surface deformation, but these static models only describe steady-state behavior and do not capture transient or frequency-dependent structural dynamics. This work develops a finite element analysis (FEA)-derived state-space framework for active optical control by reducing an ANSYS deformable mirror model into modal coordinates and mapping structural deformation into optical Zernike space. The framework is used to compare three control strategies: static feedforward inversion, LQI feedback tracking, and a combined LQR–feedforward controller under steady-state and time-varying Zernike setpoints. The results show that feedforward control provides rapid static correction, …

Thermal And Reactive Transport Phenomena In Plasma With Numerical Modeling, Nitish Kumar Singh

Theses

As semiconductor node technology advances to below 5 nm, it is vital to control Non-uniformity, Line Edge Roughness (LER), and Line Width Roughness (LWR). These factors are crucial for meeting performance, reliability, and yield goals. This study presents a computational fluid dynamics (CFD) model for optimizing Plasma-Enhanced Chemical Vapor Deposition (PECVD) processes, focusing on the synthesis of thin films such as Silicon Dioxide from precursor gases like Silane and Nitrous Oxide. The model is designed to accurately simulate the complex transport and reaction dynamics within the low-pressure, non-equilibrium plasma environment. The transport of neutral radical species (which form the bulk …

What If You Were My Fucked Up Dad And I Was Your Fucked Up Boy And We Cried Together, Ferris Ramirez

Theses

When I was six, maybe seven, my father said I would be disowned if I ended up a faggot. Twenty years have passed since I learned to perform as someone else around my father. As I come to terms with our irreparable estrangement, I present a question to the father I fail to connect with and to an imagined man: What if you were my fucked up dad and I was your fucked up boy and we cried together? This line of inquiry is the very title of my multimedia series, framing concepts of projection, queer desire, fatherhood, role-playing, and …

Scriptural Coping And Emotional Wellbeing: Examining The Mediating Role Of Hope Among Christian Professionals In The Helping Profession, Chinedum Amene

Doctoral Dissertations and Projects

This quantitative study examined the relationship between scriptural coping and emotional well-being among Christian medical and mental health professionals, with particular attention to the mediating role of hope. Christian medical and mental health professionals often operate in emotionally demanding environments and are frequently guided by faith-based practices, such as engaging with Scripture, to manage stress and maintain emotional stability. While religious coping has been extensively studied, limited empirical research has examined scriptural coping as a distinct construct within psychological research.

Grounded in Religious Coping Theory, Snyder’s Hope Theory, and principles of cognitive-behavioral theory, this study investigated whether engagement in scriptural …

High-Functioning Autism, Stress, And Access To Resources: A Grounded Theory Analysis Of Families’ Strategies To Create A Network Of Support, Emmett S. Ramirez Vasquez

Doctoral Dissertations and Projects

The purpose of this systematic grounded theory study was to understand the process of partnership building for parents of individuals between the ages of 10-29 with high-functioning ASD at two counties in Central New York. The method of grounded theory was applied in this study as it gave an opportunity to study this process of partnership building between parents and support systems since previous theories had been insufficient to address this process. This study used a qualitative methodology to gather data from 12 participants including parents of individuals between the ages of 10-29 with high-functioning ASD as well as their …

A Correlational Study Of Principal Self-Efficacy When Compared To Levels Of Work Locus Of Control And Perceived Autonomy Support, Christene Michelle Anderson

Doctoral Dissertations and Projects

The purpose of this quantitative predictive correlational design study was to examine how well perceived autonomy support and work locus of control predict perceived principal self-efficacy among public secondary school principals throughout the state of Maryland. Discovering factors that could contribute to the effectiveness of school-based leadership may help school districts uncover new ways of providing professional development and support to assist principals in leading their buildings. The Principals’ Sense of Self-Efficacy Scale, Work Locus of Control Scale, and the Perceived Autonomy Survey were instruments used to measure the criterion variable of principal self-efficacy and the predictive variables of locus …

A Phenomenological Study On The Lived Experiences Of Military Spouses With Secondary Traumatic Stress Who Are Married To Veterans Diagnosed With Ptsd, Trisha R. Perry

Doctoral Dissertations and Projects

The purpose of this hermeneutical phenomenological study was to understand the lived experiences of Secondary Traumatic Stress (STS) in military spouses whose partners have Post-Traumatic Stress Disorder (PTSD). The theory guiding this study was Lazarus and Folkman’s Transactional Model of Stress and Coping (TMSC). The central research question was: What are the lived experiences of STS in spouses married to a service member with PTSD? Additional sub-questions addressed changes in worldview, marital satisfaction, and daily functioning. Criterion and snowball sampling were used to select participants who were married to service members with PTSD for the study. Following the hermeneutical phenomenological …

A Predictive Correlational Study Of The Accuracy Of Facial Action Units And Heart Rate Variability To Predict Sustained Attention In Kindergarten, First-, And Second-Grade Students With Autism Spectrum Disorder, Carrie Michelle Harmer

Doctoral Dissertations and Projects

The purpose of this quantitative, predictive correlational study was to determine to what extent facial action units brow raise, lip press, lip suck, and mouth open and heart rate variability predict sustained attention and how accurately heart rate variability predicts the same facial action units in children ages 5 to 7 in kindergarten, first, and second grade with autism in a northeast Florida public school district. Results add to the existing body of research on how accurately facial expression analysis and heart rate variability predict sustained attention in a larger, younger sample of children with autism. They also clarify the …

Artificial Intelligence, Synthetic Media, And The Criminal Justice System, Jeffrey J. Jacobs

Doctoral Dissertations and Projects

Artificial intelligence (AI) technologies continue to evolve at an exponential pace, and their utilization of synthetic media in criminal activity presents both unprecedented opportunities and significant challenges for criminal justice systems. This dissertation explores the intersection of AI-driven synthetic media crime and the U.S. criminal justice system, identifying how such technologies are being utilized in criminal activity and evaluating the system’s capacity to adapt. This study uses a longitudinal, mixed-methods research design; it also collects and analyzes data from law enforcement agencies, AI developers, and cybersecurity experts to forecast future crime trends and assess the efficacy of current justice system …

Impact Of The Menstrual Cycle On Female Endurance Athletes' Performance, Julia M. Monk

Doctoral Dissertations and Projects

Background: During different phases of the menstrual cycle, a female endurance athlete will experience some physiological and fatigue variables. This study aims to analyze whether the differences in variables, specifically an increase in heart rate and fatigue, impacts endurance performance. Method: 20 endurance-trained, runners performed a maximal treadmill test in each of the phases of the menstrual cycle: early follicular phase (days 2–3, ± 1 day), mid-follicular phase (days 10–12, ± 1 day), and luteal phase (days 21–22, ± 1 day). Heart rate was measured before, during, and immediately after the test as well as time to exhaustion and the …

Causes Of Unreliable Major Defense Acquisition Program(Mdap) Baselines, Alfred Gordon Hutchins Jr.

Doctoral Dissertations and Projects

According to the Government Accountability Office (GAO), approximately equal numbers of Major Defense Acquisition Programs (MDAPs) are successful and unsuccessful when measured against Acquisition Program Baselines (APBs) established at the Milestone B decision point. While the systems engineering-based Defense Acquisition System (DAS) assumes that sufficient knowledge is available to support making significant resource commitments at the Milestone B decision point, the substantial incidence of cost and schedule overruns suggests otherwise. This research employs an explanatory mixed-methods design to investigate why DAS processes that develop knowledge to support Milestone decisions do not develop adequate information to support reliable program baselines (knowledge …

Creating An Adaptable Discipleship Training Guide To Address The Absence Of Young Adult Ministry Leaders At Church A, Braeden Fleck

Doctoral Dissertations and Projects

This guide was designed to address a lack of young adult ministry leaders within the researcher’s local church. This thesis project serves as a witness to the development and implementation of an adaptable discipleship training guide. The project proclaims that a flexible discipleship curriculum is the key to cultivating spiritual formation in young adults, specifically those belonging to the Z generation. The primary strategy behind implementation was to use short term intervention through a period of five consecutive weeks to assess spiritual growth of young adult congregants who attend a hybrid satellite church campus. The research project was catalyzed by …

The Influence Of Humility And Spirituality On The Relationship Between Work-Family Conflict And Mental Help-Seeking Attitudes In Skilled Trade Workers, Charles Dean Twellmann

Doctoral Dissertations and Projects

This quantitative study examined the relationships among work-family conflict (WFC), humility, spirituality, and mental help-seeking attitudes (MHSA) among skilled trade workers in the United States. Skilled trade occupations are characterized by demanding schedules, physical labor, safety risks, and cultural norms emphasizing independence and self-reliance, factors that may influence occupational strain and attitudes toward psychological support. Although WFC and help-seeking have been examined in other high-demand professions, limited research has explored how humility and spirituality relate to these constructs within skilled trade populations. Validated self-report measures of WFC, humility, spirituality, and MHSA were administered to 196 skilled trade workers who were …

A Phenomenological Study Of The Lived Experiences Of Eritrean Refugee Mothers Who Have Experienced Intimate Partner Violence, Kebreab Hailegiorgis

Doctoral Dissertations and Projects

The purpose of this transcendental phenomenological study is to explore how the lived experiences of surviving intimate partner violence (IPV) in the context of forced migration influences among Eritrean refugee mothers. Guided by trauma theory and attachment theory, the research seeks to understand the impact of IPV and displacement-related trauma on parenting behaviors and parent–child relationships among Eritrean women. This study recruited 12 Eritrean refugee mothers with IPV experiences and used semi-structured interviews conducted virtually (via Zoom) to gather rich, first-person narratives of their parenting challenges and resilience. Data analysis followed Moustakas’ phenomenological approach, involving horizonalization, thematic coding, and synthesis …

A Phenomenological Study: The Lived Experiences Of Uncertified Bilingual Teachers In Dual Language Elementary Schools At A Mid-Sized Urban Public-School District In Texas, Jeini Gordon

Doctoral Dissertations and Projects

The purpose of this hermeneutic phenomenological study was to understand the lived experiences teaching in a dual-language classroom for uncertified teachers at a mid-sized urban public-school district in Texas. A teacher’s lack of participation in an adequate teacher preparation program may alter students’ educational outcomes, even more so that of English language learners, influencing their academic achievement. The theory that guided this study was Walberg’s theory of educational productivity, which posits that student achievement is affected by student aptitude and motivation, instructional quality and quantity, and a student’s social and cultural learning environments. This phenomenological study focused on the shared …

A Qualitative Case Study Exploring The Relationship Between Nutritional Awareness, Behavioral Outcomes, And The Prevention Of Early Risk Factors Of Hypertension And Cardiovascular Disease In Elementary School Students: Perceptions Of Parents And Educators In Hull-Daisetta Independent School District, Shante Monique Espree

Doctoral Dissertations and Projects

The purpose of this case study was to explore the relationship between nutritional awareness and observed behavioral outcomes among elementary school students, with a secondary focus on how these factors may contribute to early risk indicators for hypertension and cardiovascular disease. This study was situated within Hull-Daisetta Independent School District (ISD), Texas and centered on the perspectives of both parents and educators. The theory guiding the study was the Social Cognitive Theory (Bandura, 1986) as it emphasizes the role of observational learning, social influence, and behavior change in health-related interventions. This framework supported the exploration of how nutritional awareness shapes …

Becoming Better Teachers Through Community: A Transcendental Phenomenological Dissertation Exploring The Lived Experiences Of Adjunct Faculty In A Cohort-Based Faculty Learning Community, Gerard Wayne Hall

Doctoral Dissertations and Projects

The purpose of this transcendental phenomenological study was to understand how adjuncts’ participation in a cohort-styled faculty learning community designed specifically for them shaped their teaching and connectedness with their institution. The theory that guided this study was situated learning theory, which explained the relationship between participation in learning communities and teaching practice. Additionally, this theory provided a foundation for understanding how the social dynamics of a learning community affected connectedness. The central research question examined in this study was, ‘What are adjunct faculty’s experiences participating in a cohort-based faculty learning community?’ To explore this topic and question, a transcendental …

Black Women Special Educators And Burnout: A Phenomenological Study, Whitney Patrice Collins

Doctoral Dissertations and Projects

The purpose of this transcendental phenomenological study was to understand Black women special educators’ experiences with burnout while working in Georgia, public, K-12 schools. The first theory guiding this study was Black Feminist Thought, as it provides an understanding of Black women’s unique experiences in the workplace due to the intersectionality of their race and gender. The second theory guiding this study was Maslach’s multidimensional theory of burnout, as it provides a framework for understanding burnout in the workplace. The central research question explored how Black women special educators describe their experiences with burnout in Georgia public K-12 schools. This …

Power Of Connection: How Communication Between Leaders And Employees Impacts Job Satisfaction, Keaira G. Turner

Doctoral Dissertations and Projects

Direct communication in the workplace plays a critical role in shaping employees’ perceptions of leadership and the organization. This study examines the impact of Leader-Member Exchange Theory (LMX) on understanding the relationship between leaders and employees, with particular attention to how effective communication practices influence that relationship. Data were collected through semi-structured interviews with 27 participants, who were invited to share their workplace experiences with their supervisors. Using a hybrid coding approach, the data were analyzed using thematic analysis to identify recurring patterns and themes across participants' responses. Five key themes emerged, including (1) trust through communication, (2) transparency and …

Quantitative Study Of The Predictive Correlational Relationship Between Passenger Knowledge, Attitudes, And Behaviors In Aviation Ground Safety Events, Nikkolas Howard Kraay

Doctoral Dissertations and Projects

This study examined the relationships between passenger cabin safety knowledge, attitude, and behavior using the Knowledge-Attitude-Behavior (KAB) framework as the guiding theoretical model. Although prior aviation safety research has demonstrated a linear progression from knowledge to attitudes to behaviors, these studies were conducted primarily in Asian cultural contexts. The present study investigated whether this linear sequence would hold within a larger cultural passenger population. A predictive correlational design was used, and data was collected through an online survey completed by 194 adult airline passengers. The instrument measured cabin safety knowledge, attitudes, and behavioral intent, along with demographic characteristics.

Data was …

Servant Leadership And Affective Commitment In A Bottom-Line World: Considering The Implications Of Leadership Orientation, Richard Herczeg

Doctoral Dissertations and Projects

This quantitative correlational study examined how servant leadership (SL), bottom-line mentality (BLM), Theory X/Y orientation (XY), and Theory X/Y manager–worker congruence relate to affective commitment (AC) in contemporary workplaces. In response to persistently high turnover and low engagement, even amid widespread wellness initiatives, this study positions AC as a vital, yet often overlooked, contributor to organizational resilience. While grounded in a Christian worldview, this research was applied within secular workplace contexts to examine how leadership styles and orientations, such as SL, BLM, and XY, may reflect relational and psychological conditions that shape a worker’s AC. Participants included individuals who were …

Examining The Perceived Self-Efficacy Of Governing Board Members Of Charter Schools In Florida: A Qualitative Holistic Case Study, Donald Toy Williams Jr.

Doctoral Dissertations and Projects

The purpose of this qualitative, holistic case study was to examine the perceived self-efficacy of governing board members in charter schools in Florida. The theory guiding this study was Bandura’s (1986) social cognitive theory, which explains how personal beliefs, behaviors, and environmental influences shape an individual’s and collective governance self-efficacy. The central research question guiding this study was: How does the self-efficacy of governing board members in Florida charter schools influence their governance practices? This study used a qualitative, holistic case study design and purposeful sampling to select governing board members from charter schools across Florida. Data were collected through …

Acute Effects Of Olympic Lifting Post-Activation Potentiation On Baseball Pitching Velocity And Ball Flight: A Crossover Study, Brent Hauser Pourciau

Doctoral Dissertations and Projects

This quantitative study evaluated the acute effect of an Olympic lifting-based post-activation potentiation (PAP) warm-up on fastball performance in collegiate baseball pitchers. Using a randomized, counterbalanced within-subjects crossover design (N = 13), each participant completed two warm-up conditions in a single indoor session: (a) a standard dynamic baseball warm-up and (b) the same standard warm-up followed by a brief Olympic-lifting PAP sequence (1 x 3 clean pulls at 80% predicted one-repetition maximum [1RM], 1 x 3 power cleans at 80% predicted 1RM, and 1 x 3 power jerks at 60% predicted 1RM, with 2-minute rests between sets) and a 3-minute …

A Phenomenological Study Exploring The Experiences Of Rural Elementary School Teachers’ Stem Education And Training Development, Jack W. Owens

Doctoral Dissertations and Projects

The purpose of this qualitative transcendental phenomenological study was to understand the lived experience rural elementary school teachers receiving STEM education, professional development, and training to provide high-quality STEM education to students at rural elementary schools. The theory guiding this research study was Ryan and Deci’s self-determination theory, which promotes autonomy, competence, and relatedness; when these factors are present, thereby teachers’ motivation and effectiveness in teaching STEM are enhanced. The central research question was: What are the lived experiences of rural elementary teachers concerning their preparedness to teach STEM subjects? This research study used a transcendental phenomenological qualitative design. This …

Exploring The Relationship Between Telework Intensity And The Voluntary Or Involuntary Nature Of Physical Work Arrangements Related To Work-Related Rumination, Savannah R. Schwartz

Doctoral Dissertations and Projects

Work-related rumination occurs when an individual thinks about work during non-work hours. Following the emergence of COVID-19, more employers adopt flexible models of physical working arrangements for their employees that extend beyond traditional on-site (working from a designated business office location) models, such as hybrid (working part of the time from home and part of the time at a designated business office location) and fully remote (working from home all of the time) models. The present non-experimental quantitative, cross-sectional survey study explored the relationship between telework intensity (i.e., the amount of time one spends working remotely), as well as the …

Legal Administrators’ Perceived Impact Of Coaching On Job Satisfaction And Commitment: A Phenomenological Study, Michael Francis Hayes

Doctoral Dissertations and Projects

Executive coaching has emerged as a leadership development tool that can influence how professionals interpret their work experiences within organizations. This qualitative phenomenological study explored how legal administrators within the U.S. Army Judge Advocate General’s Corps (JAGC) described their lived experiences with executive coaching and how those experiences influenced their perceptions of job satisfaction and organizational commitment. Data was collected through semi-structured interviews with 12 active-duty legal administrators. Interview transcripts were analyzed using thematic analysis to identify patterns within the collective experiences described by the participants. The analysis revealed several themes that characterized how legal administrators experienced coaching and its …

A Phenomenological Study: Experiences Of Educational Instructors Utilizing Technology Within Higher Educational Institutions, David B. Mead

Doctoral Dissertations and Projects

The purpose of this phenomenological study was to understand the lived experiences of instructors within higher educational classrooms at institutions of higher education in the Southern region of the United States. The guided theory for the study was the TPACK theory, which combined educational knowledge with educational technology. The TPACK theory of integrating technology with the knowledge framework to answer the central question and three sub-questions: (A) What are the lived experiences of educational instructors in higher education institutions as they engage in utilizing technology in their teaching practices? (B) How do instructors perceive the role of integrating technology in …

Pastors’ Children’S Stress In Evangelical Church In Java, Indonesia: A Phenomenological Study, Daniel Trihandarkha

Doctoral Dissertations and Projects

The purpose of this phenomenological study is to describe the pastors’ children's experience with stress in the evangelical church on the island of Java, Indonesia. The theory guiding this study is the self-determination theory developed by Richard Ryan and Edward Deci, as it explains the existence and absence of psychological needs of organisms to grow and thrive. The theory describes the struggle of the pastors’ children in environments where the relationship with the caregivers is fundamental in determining the growth of the pastors’ children and their well-being. The theory where relatedness, autonomy, and competencies, will examine the lived life of …

The Flaming Cross Of Kildare: A Model Of Gender And Power In Early Irish Christian Identity, 470-1220 A.D., Patricia M. Hendrick

Doctoral Dissertations and Projects

This dissertation examines the development of early Irish Christianity through the lens of gender, monasticism, and cultural synthesis, centering on the figure of Saint Brigid of Kildare and her foundational role in shaping one of Ireland’s most influential religious institutions. It argues that the Christianization of Ireland was neither abrupt nor uniform, but rather a gradual, negotiated process that fused indigenous Gaelic traditions with emerging Christian structures. Within this unique context, Ireland’s ecclesiastical organization diverged markedly from continental models, privileging monastic networks over episcopal hierarchies and enabling alternative configurations of spiritual authority. Importantly, this is seen in Kildare Abbey, a …

The Impact Of Cognitive Behavioral Therapy In Enhancing Employee Well-Being And Performance In The Workplace, Chris M. Garcia

Doctoral Dissertations and Projects

This study investigates the lived experiences of clinical administrative professionals in healthcare settings who have undergone Cognitive Behavioral Therapy (CBT) training. The importance of this study lies in addressing significant gaps in existing literature, particularly the long-term outcomes of CBT training in healthcare workplace settings and the necessity of tailoring these training to diverse work environments. The purpose of the study is to explore how CBT training influences the mental health, job performance, and overall well-being of these professionals.

Employing a Transcendental Phenomenology approach, the study will conduct in-depth interviews with clinical administrative professionals in various healthcare settings. The sample …