Digital Commons Network^™

The Effect Of Stem Professional Development On Self-Efficacy In K-12 Sub-Saharan Educators: A Quantitative, Experimental Study, Erin J. Bergen

Doctoral Dissertations and Projects

The purpose of this quantitative, experimental study is to determine if there is a significant difference in self-efficacy in K-12 Christian educators across sub-Saharan Africa because of STEM professional development. This research will help determine if professional development leads to a sense of feeling equipped in STEM integration. The sample of participants is comprised of overseas educators across three sub-Saharan African schools. The number of participants in this experimental study is 81. The Science Teaching Efficacy Belief Instrument STEBI (Form A) was used to record the self-efficacy of the participating in-service educators for posttest-only control group evaluation. After completing descriptive …

Curses & Versus: A Soldier's Life In Verse, Robert M. Haynes

Masters Theses

Every life is complicated. Since the Fall of Man, humans have used art to probe the tumult of the living and give meaning to the dead. The challenge comes when an artist must capture brief moments that define their work or explain the force that impelled their creations. What follows is my attempt to harness five aspects that contributed this work, the process of writing it, and its significance to the wider literary world. The snapshots presented stand on their own and do not require the others to make sense. However, when taken together they present the whole of a …

Incorporating Industry-Standard Technical Writing Into A Materials Testing Laboratory, Caleb Levi Head

Theses and Dissertations

The fluid analysis and materials testing laboratories are crucial for engineering students to learn experimental procedures and data interpretation. Engineers spend a significant portion of their workday on report writing, yet many feel their undergraduate education did not adequately prepare them for this task. At the University of Arkansas at Little Rock, students were given an industry-influenced lab report template to expand their knowledge of the necessary information required in technical writing, thereby teaching and improving their technical writing skills actively. These reports were evaluated qualitatively and quantitatively against previous submissions over two semesters in the mechanical engineering fluids and …

Spidr Enables Multiplexed Mapping Of Rna-Protein Interactions And Uncovers A Mechanism For Selective Translational Suppression Upon Cell Stress, Erica Wolin, Jimmy K. Guo, Mario R. Blanco, Isabel N. Goronzy, Darvesh Gorhe, Wenzhao Dong, Andrew A. Perez, Abdurrahman Keskin, Elizabeth Valenzuela, Ahmed A. Abdou, Carl R. Urbinati, Ross Kaufhold, H. Tomas Rube, Jailson Brito Querido, Mitchell Guttman, Marko Jovanovic

Biology Faculty Works

RNA-binding proteins (RBPs) regulate all stages of the mRNA life cycle, yet current methods generally map RNA targets of RBPs one protein at a time. To overcome this limitation, we developed SPIDR (split-and-pool identification of RBP targets), a highly multiplexed split-pool method that profiles the binding sites of dozens of RBPs simultaneously. SPIDR identifies precise, single-nucleotide binding sites for diverse classes of RBPs. Using SPIDR, we uncovered an interaction between LARP1 and the 18S rRNA and resolved this interaction to the mRNA entry channel of the 40S ribosome using cryoelectron microscopy (cryo-EM), providing a potential mechanistic explanation for LARP1’s role …

Improving Staff Knowledge Of Insulin Protocols, Farzana Dalal

Walden Dissertations and Doctoral Studies

A midwestern inpatient hospital experienced a rise in insulin-induced hypoglycemic events on an acute medical-surgical floor as evidenced by 6-23 incidences per month between September 2024 to February 2025. A gap in practice revealed deficiencies in knowledge on the use of insulin protocols, which led to the project question addressing if nursing education on the use of insulin protocols would improve nursing staff knowledge as measured by pre- and post-educational surveys, thus resulting in decreased hypoglycemic events. This educational project utilized the ADDIE pedagogy, the John Hopkins evidence-based practice (JHEBP) model, and the Walden University's DNP Project Process Guide. This …

Navigating Health Management Decisions In Pediatric Food Allergy: Exploring Caregiver Needs, Experiences, And Behaviors, Perry Allen Catlin

Dissertations (1934 -)

Food allergy (FA) is a prevalent and often severe condition affecting approximately 8% of U.S. children (Gupta et al., 2018; Robson & Assa’ad, 2024). The responsibility for daily management of FA, including making critical health management decisions, often falls to caregivers. These responsibilities can impose significant psychosocial demands on caregivers, particularly as treatment options expand and require more nuanced decision-making (Collins et al., 2024; Hamadi et al., 2024; Knibb & Jones, 2024; Lieberman, 2024; Umetsu, 2024). Caregivers' decisions are shaped by a range of individual needs, experiences, and sociodemographic characteristics (Dale & Hemmerich, 2009; Hoefel, O’Connor, et al., 2020). As …

Role Of Progesterone Action In Inguinal Hernia Formation Via Skeletal Muscle Fibrosis And Atrophy, Tianming You, Mehrdad Zandigohar, Tanvi Potluri, Natalie Piehl, John S Coon V, Elizabeth Baker, Maya Kafali, Yang Dai, Jonah J Stulberg, David J Escobar, Richard L Lieber, Hong Zhao, Serdar E Bulun

Faculty, Staff and Student Publications

More than 1 in 4 men will undergo surgery for inguinal hernia, which is commonly associated with fibrotic degeneration of the lower abdominal muscle (LAM) in the groin region. Utilizing a male mouse model expressing the human aromatase gene (Aromhum), previous studies showed that locally produced estradiol acting via estrogen receptor α in LAM fibroblasts leads to fibrosis, myofiber atrophy, and hernia development. Here, we found that upregulation of progesterone receptor (PGR) in a LAM fibroblast population mediates this estrogenic effect. A PGR-selective progesterone antagonist in Aromhum mice decreased LAM fibrosis and atrophy, preventing hernia formation and stopping progression of …

Conceptualizing Covid-19 As A Biosecurity Threat To The National Security Of Twelve Countries: Implications For Global Health Policy, Lydia Donkor

Doctoral Dissertations and Projects

Biosecurity threats, including diseases such as COVID-19, influence public health and national security policies. The COVID-19 outbreak in Wuhan, China, reveals the risks of biological agents to public health. This study investigates how varying perceptions of COVID-19 as a biosecurity threat affected public policy in 12 countries, including the United States (U.S.), the United Kingdom (U.K.), China, and Ghana, aligning with the Copenhagen School's Securitization Theory and employing causal inference methods. This research used qualitative document analysis to examine government responses to COVID-19 within a security framework among the research participants. The findings demonstrate that nations that viewed COVID-19 as …

Precision Care In Screening, Surveillance, And Overall Management Of Barrett's Esophagus, Yeshaswini Reddy, Madhav Desai, Bernadette Tumaliuan, Nirav Thosani

Faculty, Staff and Student Publications

Barrett's esophagus (BE), a metaplastic transformation of an esophageal squamous epithelium into an intestinal-type columnar epithelium, is the primary precursor to esophageal adenocarcinoma (EAC). Traditional management strategies have relied heavily on selective screening, tailored surveillance intervals, and early dysplasia detection and treatment algorithms. However, the heterogeneity in progression risk among BE patients necessitates a more nuanced, personalized approach involving precision care, tailoring decisions to individual patient characteristics, promises to enhance outcomes in BE through more targeted screening, personalized surveillance intervals, and risk-based therapeutic strategies. This review explores the current landscape and emerging trends in precision medicine for Barrett's esophagus, highlighting …

If We Must, We Must: A Better Way To Utilize Placement Exams, Samantha Bravo

Masters Theses (Archived)

College placement exams have been part of a student’s continuing education journey for many years. In a state like Texas, who has had a very extensive and dynamic history in regard to education assessment, students wishing to enter into college must take a state specific college placement exam. Is this state specific placement instrument helping its students? Texas pioneered a shift to a college and career ready focused state curriculum, so does this focused curriculum prepare students for the state college placement exam? How can this potentially be used in a way that can better serve its students? By analyzing …

Experience Matters: An Application Of The Operative Value Index For Lumbar Fusions, Danyal Quraishi, Advith Sarikonda, D. Mitchell Self, Steven R. Glener, Arbaz A. Momin, Emily L. Isch, Ashmal K. Sami, Matthews Lan, Nicholas Clark, Ashwini Sharan, Srinivas Prasad, Jack Jallo, Joshua Pelta-Heller, Alex R. Vaccaro, James Harrop, Ahilan Sivaganesan

Department of Neurosurgery Faculty Papers

INTRODUCTION: As healthcare systems transition to value-based care models, it is critical to understand factors influencing costs and outcomes in neurosurgery. This study utilizes Time-Driven Activity-Based Costing (TDABC) to assess the impact of surgeon experience and case volume on costs, clinical outcomes, and operative value in lumbar fusions. While TDABC has been applied in various surgical specialties, its use in neurosurgery, particularly in analyzing surgeon-specific factors, remains limited.

METHODS: A retrospective cohort study was conducted at a single center, analyzing lumbar instrumented arthrodesis procedures from 2017 to 2019. Primary variables included surgeon experience (years) and case volume (annual procedures). Confounding …

Exploring How People Become Investigative Genetic Genealogists Who Assist With Law Enforcement Investigations: A Multiple Case Study, Matthew Serio Hoggatt

Doctoral Dissertations and Projects

In today’s world of criminal justice, the use of Deoxyribonucleic Acid, otherwise known as DNA, to solve crimes, has become a popular tool for law enforcement, and a popular subject plot within the entertainment industry. Also growing in popularity at a fast rate, is the use of DNA combined with consumer-based genealogy websites to help identify unknown suspects or unidentified human remains. This process has become commonly known as investigative genetic genealogy (IGG), or forensic investigative genetic genealogy (FIGG). What remains unclear however, is how people learn the skills necessary to establish a career within the IGG field. The purpose …

Perceptions Of Air National Guard Students’ Transformative Technology Experiences During Their Professional Military Education Courses: A Transcendental Phenomenological Study, Tiffany Colburn

Doctoral Dissertations and Projects

The purpose of this transcendental phenomenological study was to understand the perceptions of Air National Guard students stationed in the United States about technology integration during their professional military education (PME) courses and its role in encouraging leadership perspective transformative learning in the United States. The theory guiding this study was the transformative learning theory. This study explored how technology could help students expand their views while completing their PME courses and enabled them to use their own experiences to add value to the course. The central research question was: What are the perceptions of Air National Guard students on …

Church Support For People With Suicidal Ideations Or Attempts: A Phenomenological Study, S. Allyson Bowers

Doctoral Dissertations and Projects

The purpose of this phenomenological study was to understand the lived experiences of people with suicidal behavior seeking help from an Evangelical Church. The theories that guided this study were Kelman’s social influence theory and Kelly and Thibaut’s interdependence theory. The social influence theory explains the influence the church may have over an individual, and the interdependence theory describes how church leadership impacts interactions with church members who have suicidal behaviors. Data was collected through semi-structured interviews of participants. The interviews were recorded to help with accuracy and transcribed. Participants reviewed the transcriptions for accuracy. Then the researcher went through …

Biblical Servant Leadership And Physical Therapists' Clinical Decision Making For Breast Cancer Patients After Breast Cancer Surgery: A Correlational Study, Cleve Carter Iii

Doctoral Dissertations and Projects

The purpose of this quantitative, correlational study was to determine whether a relationship exists between physical therapists’ (PTs’) perceptions of their manager’s or director’s application of BSL and the clinical decision-making of the PT when treating patients of varying socioeconomic status (SES) and race after breast cancer surgery (e.g., mastectomy, lumpectomy) in the United States (U.S.). This study utilized case-based vignettes for a patient population seeking skilled physical therapy services after breast cancer surgery within the U.S. healthcare system context. The sample population consisted of PTs from across the U.S. who actively evaluate and treat patients following breast cancer (BC) …

Unseen Warriors: A Phenomenological Study Of Female Veterans' Post Military Experiences In Central Texas, Natasha D. Smith

Doctoral Dissertations and Projects

The purpose of this phenomenological study was to describe female veterans' post-military experiences in Central Texas. Female veterans faced challenges post military service, including reintegrating into society, seeking resources through veteran and community programs, maintaining overall well-being, building relationships, and establishing their identities as veterans. Although programs and services were implemented to address barriers such as the lack of gender-specific healthcare, difficulties navigating community support systems, limited information about resources, and persistent social stigmas continued to exist. The goal of this phenomenological study was to understand female veterans’ lived experiences by using Alfred Schuetz’s Homecoming theory and Nancy Schlossberg’s Transition …

Uncovering The Parental Self Identification Process, Danita M. Baber

Doctoral Dissertations and Projects

This dissertation sought to uncover the first-time parent’s novel journey of transforming their identity from individual to parent. Through highlighting the well-established theories that describe the self-identification process, this study centered around concepts related to the conceptualization of the self, the developmental process of self-identification, and the establishment of one’s self-concept, through the lens of parenting. Specifically, this study asked, “For first time parents, does the age of one’s infant impact one’s level of obtained parental identity?” To best answer this question, this study followed a quantitative research design to discover if there was a positive relationship between measured parental …

Digital Identity Management As A Critical Criminal Justice And Homeland Security Legal Issue: A Qualitative Analysis Of The Reasonable Person Factors Involved In Court Decisions, William H. Nicholson

Doctoral Dissertations and Projects

The purpose of this descriptive qualitative applied study is to define and explain through analysis the reasonable person standard as it relates to prosecution and sentencing computer crime cases involving digital identities while addressing the problem of digital anonymity. This has been done by analyzing computer crime cases with the advent of current and planned technologies, and surveying potential jurors to understand the current state of knowledge of digital attribution. This descriptive qualitative research method analyzed the problem through the use of criminological theories of control and social learning theory to better understand the reasonable person standard in computer crime …

Maintaining Elementary Student Engagement And Motivation During Stem Activities: A Phenomenology, Christopher Feiler

Doctoral Dissertations and Projects

The purpose of this hermeneutic phenomenological study was to describe the lived experiences of maintaining student engagement and motivation during STEM activities in elementary classrooms across the United States. For this research, I applied Bandura's self-efficacy theory as my foundational framework. The study highlights that a teacher’s perception of their efficacy affects their instructional practices and the achievement levels that students reach in STEM disciplines. As such, the primary guiding research question in this case was framed as follows: In what ways do elementary educators articulate their experiences fostering engagement and motivation in students during STEM activities? Data collection for …

Understanding Dissonance Between Clinical Theory And Christian Principles In Counseling: Equipping Clinically Trained Professional Counselors To Counsel Through A Christian Worldview, Herbert Douglas Geiger

Doctoral Dissertations and Projects

This action project focuses on addressing the need for a research-based activity to understand the operational worldviews related to the counseling practices of the counselors at the Abundant Life Counseling Center. With the increasing demand for clinically and theologically informed counseling, the study explored how a counselor's worldview affects faith integration into a clinically based, therapeutic approach. The goal is to equip counselors to provide wisdom through theologically grounded and clinically informed training within a Christian philosophical framework, improve their Christian counseling skills, and reduce dissonance caused by the lack of integration skills in Christian-principled counseling (Prov 29:18). Every Christian-principled …

Exploring Higher Education Faculty Experiences With Artificial Intelligence: A Case Study, Keisha Pierre-Stephen

Doctoral Dissertations and Projects

The purpose of this case study was to explore the experiences and perceptions of higher education educators integrating artificial intelligence (AI) tools, such as ChatGPT, in curriculum work conducted within a university setting, focusing specifically on faculty members. The theory guiding this study was the technological pedagogical content knowledge (TPACK) framework, which presented a window for understanding the integration of technology, pedagogy, and content knowledge in educational practices. The central research question was: What are the lived experiences and perceptions of higher education faculty members at an urban university on the West Coast of the United States regarding students' use …

Exploring The Influence Of Early Life Attachment And Faith On Resilience And Independence In Emerging Adulthood: The Role Of Childhood Loss, Moriah E. Lewis

Doctoral Dissertations and Projects

The transition to emerging adulthood is a period of change that is shaped by early attachment. Previous literature has established that attachment security influences functioning later in life, including both resilience and independence. Additionally, faith is often associated with positive outcomes. However, limited research has examined how these constructs relate to one another in emerging adulthood. The purpose of this quantitative correlational study was to explore how faith moderates the relationship between early life attachment and both resilience and independence in emerging adults. The study employed self-report surveys to measure attachment, resilience, independence, and faith in a sample of 70 …

Impacts Of Positive Childhood Experiences That Foster Resilience In Adults With Childhood Trauma A Qualitative Case Study, Jennifer J. Ruiz

Doctoral Dissertations and Projects

In today’s rapidly evolving environment, adolescents face increasingly complex challenges to their health and well-being. A significant contributor to these challenges is exposure to adverse childhood experiences (ACEs), which have been linked to long-term negative outcomes in physical, emotional, and psychological health. The pervasive impact of ACEs highlights the urgent need to explore protective mechanisms that can buffer against these adverse effects. Positive childhood experiences (PCEs) have emerged as a promising counterbalance, offering supportive and nurturing conditions that enhance resilience and promote healthier developmental trajectories. This qualitative case study explored the specific types of PCEs that foster resilience in individuals …

Understanding The Willingness Of Christian Ethnic Minority Student-Athletes To Seek On-Campus Mental Health Services: A Mixed Methods Approach, Benael J. John-Rose

Doctoral Dissertations and Projects

Romans 12:1 tells Christians that their unique physical abilities are gifts from God that should be used to honor Him (New International Version Bible, 1978/2011). Christian racial/ethnic minority student-athletes (CMSAs) often navigate complex intersections of spirituality, identity, and stigma in relation to mental health. Despite growing research in biopsychosocial-spiritual (BPSS) models, CMSAs remain underrepresented in mental health literature. This mixed-methods study explored the willingness of CMSAs to seek on-campus mental health services at a public university in the Southwestern United States. Data was collected through a web-based survey (N = 20) and semi-structured interviews with a subset of participants (N …

The Christian Impact On Addiction Recovery In The Revive And Restore Recovery Ministry In Westmoreland County, Pennsylvania, Donald Albert Walczak

Doctoral Dissertations and Projects

The problem at Revive and Restore Recovery Ministry is that participants fail to grasp the importance of a biblically based approach to addiction recovery. The purpose of this action research project is to develop a written plan that implements an effective Christian-based approach to addiction recovery. The field of addiction recovery provides a multi-faceted approach to accomplish healing for individuals seeking wholeness and healing. The primary goal of this study is to develop a viable Christian recovery model. The implementation of this model will be detailed in the research. Research methods include the gathering of basic data points through the …

The Effect Of Sleep Latency, Duration, And Quality In Adolescents When Altering Nighttime Smartphone And Social Media Use, Ryan R. May

Doctoral Dissertations and Projects

Smartphones and social media are quickly becoming standard technological tools for connection and socialization within the modern-day adolescent population. Inversely, sleep for adolescents/young adults is decreasing while sleep problems are rising. This research trend is prompting researchers to investigate how restricting or eliminating smartphone/social media use benefits sleep health. The current study hypothesized that when adolescents/ young adults aged 18-21 eliminate smartphone/social media usage one hour before bedtime there would be a significantly lower number of nighttime awakenings, a reduction in sleep onset, and a higher number of minutes slept for participants in the experimental group when compared to participants …

Exploring The Bidirectional Relationship Between Attachment Styles And Spiritual Practices In Protestant Christians: A Qualitative Study, Emily Lauren Pritt

Doctoral Dissertations and Projects

This qualitative study explores the bidirectional relationship between spirituality and attachment among Protestant Christians—a topic with limited empirical focus. Grounded in attachment theory and theological insights, prior research often treats attachment as a static predictor of spiritual development, with little attention to how spiritual engagement may reshape attachment. This study addresses the gap by examining how these relational domains mutually inform each other and affect psychological well-being within a Christian context. The purpose was to explore if adult attachment styles and spiritual practices influence emotional health, relational security, and overall well-being among active Protestant Christians. Twenty-two adults actively engaged in …

Predicting School Culture From Teacher Experience And Funding: A Predictive Correlational Study, Bailey D. Keller

Doctoral Dissertations and Projects

The purpose of this quantitative, predictive correlational study is to understand how accurately the perception of school climate can be predicted from a linear combination of special education teachers’ years of teaching experience and supplemental state and federal funding allocated to teachers in the special education setting. The participants were drawn from a convenience sample of public school special education teachers located in a large school district in a southern state of the United States during the 2024-2025 school year. The setting for this research is a collection of campuses representing the work environments of the participants sampled. The My …

Nurse Preceptors' Perceptions Of Effectiveness Precepting Senior Baccalaureate Nursing Students: A Transcendental Phenomenological Study, Kelly Anne Arraf

Doctoral Dissertations and Projects

The purpose of this transcendental phenomenological study was to explore how clinical nurse preceptors perceive their effectiveness when working with senior baccalaureate nursing students in East Texas. The study was guided by two theories: Invitational Education Theory, introduced by Purkey and Novak, used to understand how preceptors teach, and Bandura’s Social Learning Theory, used to understand how preceptees learn. The central research question was: What is the lived experience of being a nurse preceptor to senior baccalaureate nursing students in East Texas? Data were collected from semistructured virtual interviews, field and journal notes, and a demographic survey. Braun and Clarke’s …

No Evidence Of Pitavastatin Effect On Muscle Area Or Density Among People With Hiv, Kristine M Erlandson, Triin Umbleja, Heather J Ribaudo, Michael T Lu, Jana Taron, Marissa R Diggs, Pamela S Douglas, Kathleen V Fitch, Carl J Fichtenbaum, Markella V Zanni, Judith A Aberg, Maria C Rodriguez-Barradas, Katharine Breaux, Rosalba Gomez Morones, Craig A Sponseller, Judith S Currier, Gerald S Bloomfield, Sarah M Chu, Alex B Lu, Carlos D Malvestutto, Steven K Grinspoon, Todd T Brown

Faculty, Staff and Students Publications

Background: Skeletal muscle area (MA) and muscle density (MD) are key determinants of physical function and typically decline with increasing age. Statins have well-known musculoskeletal effects but whether statins impact MA or MD is not well established, especially in the setting of randomized treatment.

Methods: REPRIEVE is a double-blind randomized trial evaluating the effect of pitavastatin for primary prevention of major adverse cardiovascular events in people with HIV (PWH). Thoracic paraspinal, pectoralis, and infraspinatus MA and MD were assessed among Mechanistic Substudy participants with CT at baseline and month 24.

Results: Of 804 substudy participants, 510 remained on study treatment …