Computer Vision Methods For Rfi Segmentation In Radio Astronomy, Yechan Kweon

Graduate Theses, Dissertations, and Problem Reports (ETD)

Radio Frequency Interference (RFI) increasingly contaminates the radio astronomy spectrum, often exceeding astronomical signal amplitudes by 50–70 dB. Reliable detection and mitigation are therefore essential for studies of faint transient phenomena such as pulsars and fast radio bursts (FRBs). Existing practical methods including Spectral Kurtosis (SK), Median Absolute Deviation (MAD), and SumThreshold perform well in many settings but depend on assumptions about the RFI environment and data statistics, limiting their effectiveness for weak, broadband, or nonstationary interference.

We develop a transform based RFI detection method that requires no prior knowledge of the RFI origin or type. The method operates on …

Embodiment Among Collegiate Women Athletes: The Perceived Impact On Sport Performance, Commitment, And Enjoyment, Hannah Lynne Silva-Breen

Graduate Theses, Dissertations, and Problem Reports (ETD)

Collegiate women athletes report high rates of body dissatisfaction and wanting more support for improving their body image within their athletic departments. Guided by the Developmental Theory of Embodiment (DTE; Piran, 2017), the purpose of this study was to examine collegiate women athletes’ perceptions of the relationship between their embodiment and aspects of their sport experience. Participants were 311 women currently competing in 24 different sports within NCAA and NAIA athletics. Participants completed the Experience of Embodiment Scale, Subjective Performance Questionnaire, Sport Commitment Questionnaire-2, and open-ended response questions about the perceived relationship between these variables. A convergent parallel mixed methods …

Architecture And Mechanistic Engineering Of Nanocomposite Steam Electrodes For High-Performance Metal-Supported Protonic Ceramic Cells, Xuemei Li

Graduate Theses, Dissertations, and Problem Reports (ETD)

The advancement of proton-conducting ceramic cells (PCCs) is crucial for efficient energy conversion in hydrogen- and/or ammonia-based energy carrier systems. However, a bigger success requires significant progress in cell fabrication, interfacial stability, fast electrode kinetics, and high Faradaic efficiency. This study investigates the rational design, fabrication, and performance breakthroughs of PCCs, with a focus on electrode architecture engineering, material interfacial coupling, and mechanistic understanding of electrochemical processes.

The metal-supported fuel electrode structure of PCFCs was systematically optimized, revealing the significant influence of Ni diffusion on cell performance and durability. High power density and stable ammonia-fueled operation were achieved. A heterointerface-rich …

Dataless Neural Networks For Boolean Satisfiability And Network Optimization, Andrew Evan Gautier

Graduate Theses, Dissertations, and Problem Reports (ETD)

Combinatorial optimization problems (COPs) require searching over a finite solution space subject to constraints, with the goal of satisfying an objective function. They arise in operations research, scheduling, resource allocation, circuit design, and many other fields. Many problems in combinatorial optimization (including satisfiability and network design) are NP-hard. Traditionally, researchers have built approximate solvers that return near- optimal solutions efficiently by developing increasingly sophisticated heuristics and meta- heuristics. Deep learning has provided new opportunities for improving combinatorial solvers by leveraging neural guidance to prune the search space. Traditional neural networks have distinct drawbacks in this context: separate training and …

Comparing Unet And Hrnet For Geomorphic Feature Extraction From Digital Terrain Model-Derived Land Surface Parameters, Behnam Solouki

Graduate Theses, Dissertations, and Problem Reports (ETD)

Automated extraction of geomorphic features from high spatial resolution terrain data is important for environmental monitoring, geohazard assessment, and landscape change analysis. This study compares two convolutional neural network architectures, UNet and High-Resolution Network (HRNet), for semantic segmentation of mine benches and sinkholes from lidar-derived digital terrain models and land surface parameters. Mine benches represent anthropogenic, elongated, stepped landforms associated with historic surface mining, whereas sinkholes are natural, compact depressions common in karst terrain. Three terrain-derived input layers were used: square-root-transformed slope, broad-scale topographic position index, and fine-scale annulus topographic position index. Models were trained using five training sample sizes, …

Physics-Informed Machine Learning Methods To Predict Heavy-Duty Diesel Engine Performance And Emissions, Sandeep Guguloth

Graduate Theses, Dissertations, and Problem Reports (ETD)

The development of internal combustion engines for increased efficiency and reduced emissions demands improved design tools that are cost-effective, fast, and easy to integrate into existing engineering workflows. Low-dimensional physically based engine models serve this role by reducing the need for iterative experimental prototyping but historically rely on empirical correlations that sacrifice fidelity compared to CFD. Machine learning (ML) approaches, conversely, achieve high predictive accuracy but lack interpretability and generalize poorly beyond their training data. Physics-informed machine learning (PIML) bridges this gap by constraining the solution space to physically feasible predictions, offering a more reliable way to model in-cylinder phenomena. …

Smartbot V3: A Scalable Educational And Research Robotics Platform And Decentralized Construction Framework, Robert Tyler Cook

Graduate Theses, Dissertations, and Problem Reports (ETD)

Autonomous robotic systems are increasingly used in both engineering education and robotics research, creating a need for systems capable of supporting both within a common platform. This thesis presents SMARTbot V3, a scalable robotics platform developed to support undergraduate robotics education and multi-robot research.

SMARTbot V3 is a differential-drive mobile manipulator incorporating a 3-degree-of-freedom manipulator, LiDAR, RGB cameras, onboard computation, and Robot Operating System 2 (ROS2) software. The platform was designed to support scalable deployment through standardized hardware, modular construction, and common software. A fleet of twenty robots was manufactured and deployed for both educational and research activities. Educational validation …

Data Augmentation And The Reliability Of Conformal Prediction For Uncertainty Quantification In Medical Imaging, Rizwan Ahamed

Graduate Theses, Dissertations, and Problem Reports (ETD)

The safe clinical deployment of deep learning models for high-stakes medical imaging tasks requires more than high average accuracy; it requires demonstrable, per-case reliability. Uncertainty quantification (UQ) provides the missing signal that tells a clinician when a model prediction can be trusted and when a case should be escalated for expert review. Among UQ approaches, conformal prediction (CP) is especially attractive because it produces prediction sets that are guaranteed, under the assumption of exchangeability, to contain the true label with a user chosen probability, and it does so without assumptions about the model or the data distribution. This report first …

Assessing Mobility And Upper Extremity Function Beyond Laboratory Settings In Manual Wheelchair Users With Spinal Cord Injury Using Inertial Measurement Units, Kathylee Pinnock Branford

Graduate Theses, Dissertations, and Problem Reports (ETD)

Manual wheelchair users with spinal cord injury (SCI) face chronic, repetitive shoulder demands that far exceed those of able-bodied daily life, placing them at high risk for rotator cuff pathology and long-term upper extremity dysfunction. Despite this burden, existing research has relied predominantly on brief laboratory assessments that capture only a narrow part of real-world mechanical demands, leaving critical gaps in the identification of true injury risk factors. This dissertation developed and applied inertial measurement unit (IMU)-based methods and novel algorithms to characterize arm use, mobility, and environmental context during a full week of free living behavior in 25 manual …

How Does Pre-Registration Child Specific Education Prepare Newly Qualified Nurses’ To Care For Children, Young People, And Their Families? An Empty Narrative Review, Matt Carey, Danielle Edge, Julie Blamires, Mandie Foster, Sarah Neill

School of Nursing and Midwifery

This narrative review investigates the influence of child-specific content within pre-registration nursing programs on newly qualified nurses’ perceptions of preparedness to care for children, young people, and their families. Despite international recognition of the specialised competencies required for pediatric nursing, the proportion and quality of child-focused education across Higher Education Institutions is not clear. The Population, Exposure, Outcome framework provided a comprehensive search strategy applied across eight databases to identify relevant studies that met the inclusion and exclusion criteria. Of 663 records identified, 451 were screened and 25 full texts wereassessed for eligibility by two reviewers. No studies met the …

Exploring The Views Of Children With Cerebral Palsy, Their Parents And Physiotherapists On Participating In A Feasibility Randomised Controlled Trial Testing An Exergaming Device: A Qualitative Study, Rachel Rapson, Jos M. Latour, Jonathan Marsden, Bernie Carter

School of Nursing and Midwifery

Background: This study aimed to understand the experiences and views of children with cerebral palsy, their parents and physiotherapists participating in the ACCEPT feasibility randomised controlled trial, which explored a 10-week physiotherapy intervention using an interactive gaming training device. Design: Qualitative methods included semi-structured interviews, e-diary and photographs. Nine parent–child dyads and three physiotherapists participated. Children were aged between 7 and 16 years; four had co-existing additional needs. Interviews were transcribed. Reflexive thematic analysis was used. Results: Five themes covered the breadth of participants’ experiences: (1) Fitting in therapy; (2) Motivation; (3) New opportunities; (4) Physiotherapists out of their comfort …

Job Satisfaction, Burnout, And Intent To Stay In Neonatal Nursing In England And Wales: A Cross-Sectional Survey Study, Kathy Chant, Yoko Nishimura, Aviva Petrie, Jos M. Latour, Nicola Booth, Kelly Crofts, Lisa Viola, Katie Gallagher

School of Nursing and Midwifery

Objective: To explore job satisfaction, burnout and intent to stay in neonatal nurses in England and Wales. Methods: A cross-sectional online survey study using the McCloskey Mueller Satisfaction Scale (MMSS) to explore job satisfaction, the Copenhagen Burnout Inventory (CBI) to explore burnout and the Nurse Retention Index (NRI) to measure intent to stay. All neonatal nurses working in England and Wales were eligible to take part. Data were collected between February and September 2024. Results: A total of 1590 neonatal nurses completed the survey. Job satisfaction was neutral. Moderate work burnout was reported, with statistically significant differences in mean score …

A Review Of The Effect The Kentucky Center For School Safety Has On Kentucky School District’S Safe Schools Data, Patricia Greer

Murray State Theses and Dissertations

The study examines the impact of the Kentucky Center for School Safety on safety data from Kentucky Schools. The data consisted of behavior events reported in the Safe Schools Data collected from the student information system, Infinite Campus. The analysis was conducted using interaction data from the Kentucky Center for School Safety and behavioral data from Kentucky Public Schools.

Speaking For The Families: Organizational Socialization Of Military Spouses In Volunteer Leader Positions, Virginia Klaus

Murray State Theses and Dissertations

Military spouses holding volunteer leadership positions in military unit family readiness groups, provide a link between commanders and families of service members. They act within military organizations as the only official voice of spouses, a stakeholder group recognized as influential in retention rates and force readiness. Despite their importance, military spouses are often portrayed in research as passive members, taking on roles to meet the expectations of their peers and military organizations. That contradicts historical evidence of military spouses as active organizational members who have socialized other spouses, and as family advocates who have challenged military organizational practices and policies. …

Identifying The Knowledge And Skills That Students Enrolled In Agricultural Systems Technology Degree Programs Need: Perspectives From University Faculty, Jerry Blake Kennedy

Murray State Theses and Dissertations

National trends have highlighted the need for a knowledgeable, skilled workforce in advanced agricultural systems. University-level Agricultural Systems Technology (AST) undergraduate degree programs and closely-related degree programs are vital to equipping the agricultural workforce with the knowledge and skills needed to support the industry. Ensuring that AST curricula are relevant and appropriate is vital to equipping undergraduate students in such programs with the knowledge and skills they need to succeed in the modern agricultural workforce. This study sought to identify the essential knowledge and skills needed by undergraduate AST degree program students from the perspectives of university-level faculty across the …

Exploring Pedagogical Content Knowledge Of Experienced Teachers In Agricultural Animal Reproduction: A Grounded Theory, Amanda Wooditch

Murray State Theses and Dissertations

Teaching agricultural animal reproduction requires a specialized integration of scientific content knowledge and instructional strategies, conceptualized as Pedagogical Content Knowledge (PCK). While PCK has been widely studied in other disciplines, research on its development and application in agricultural education has been limited. This qualitative study utilized grounded theory methodology to explore the PCK of experienced high school agriculture teachers in Georgia as they taught animal reproduction.

Twenty educators, each with a minimum of eight years of classroom experience, participated in the study through semi-structured interviews, lesson artifacts, and memos. Analysis, guided by Gess-Newsome’s (2015) Model of Teacher Professional Knowledge and …

Wired For Inclusion: Leveraging Strengths Of Neurodivergent Special Educators, Brok Hess, Teresa Clark Ed.D.

Murray State Theses and Dissertations

Special education teachers face unique challenges, and neurodivergent special educators possess distinctive strengths that can allow them to excel in the classroom. However, barriers, stigma, and ableism persist that have prevented neurodivergent individuals from accessing this career, receiving support, and thriving as special educators. Self-efficacy and executive functioning both correlate to success and retention within education. This research analyzed the relationship between special education teachers’ self-efficacy and executive functioning, specifically among neurodivergent special educators. Results concluded that a significant positive correlation exists between neurodivergent special education teachers’ executive functioning and self-efficacy. Attention to these results will highlight the importance of …

Out In The Arena: Examining The Lgbtq+ Experience In Ihsa, Katharine C. Didier

Murray State Theses and Dissertations

This study investigated factors influencing Intercollegiate Horse Show Association (IHSA) LGBTQ+ riders’ perceptions of inclusion, safety, and belonging, with the hypothesis that teams with diversity and inclusion policies would be perceived as more accepting. An online survey was developed to gather information from self-identified LGBTQ+ IHSA students. Questions covered demographics, team environment, and perceived inclusivity within their equestrian programs. Question types included multiple choice, Likert-type, short answer, and open-ended. IHSA coaches were asked to share the survey link with team members. Students were able to respond anonymously. The survey was open for 8 weeks. Reminders were sent out at 3 …

The Impact Of Rti On Ninth Grade Reading Success, James Dailey

Murray State Theses and Dissertations

Graduation rates are an important component of a school’s progress report card, published by the state’s department of education.  Ensuring that students have the resources and supports that they need in order to be successful is paramount to a school’s ability to provide quality educational services for their students.  Research published by the Center for High School Success (2020) indicates that students entering their freshman year of high school are twice as likely to drop out of school for being academically behind compared to their peers. For students to receive the support that they need to help them close their …

Utilizing Cte Programs To Bridge The Expectations Gap Between Academia And Entrance Into The Global Workforce, Jose M. Gaspar

Murray State Theses and Dissertations

The purpose of this study was to examine whether completing high school Career and Technical Education (CTE) coursework, completing foreign language coursework, or participating in community college CTE programs predicted higher levels of postsecondary degree attainment. The study was designed to better understand how academic and technical pathways function within the P–20 system and how these pathways shape student perceptions and long-term educational outcomes. Participants in the study included individuals who had completed some level of postsecondary education and provided information on their high school and community college coursework experiences. Findings indicated that students who participated in both academic and …

Beyond The Classroom: The Continuing Impact Of Brown V Board On Equitable Access To Career And Technical Education For Historically Underrepresented Students, Shannon Hood

Murray State Theses and Dissertations

Using a qualitative phenomenological design grounded in Critical Race Theory (CRT) and Culturally Relevant Pedagogy (CRP), this study examined how institutional structures, instructional practices, and community and industry partnerships shape equitable access, engagement, and outcomes in secondary Career and Technical Education (CTE) programs serving students from historically marginalized backgrounds. Semi-structured interviews were conducted with thirteen participants, including educators, administrators, and industry partners engaged in secondary CTE implementation. Thematic analysis identified recurring patterns related to leadership decision-making, instructional relevance, culturally responsive teaching practices, relational trust and advocacy, and authentic work-based learning (WBL) experiences. Findings indicate that equitable participation in CTE extends …

An Analysis Of Systemic And Contact Herbicide Usage Trends In Illinois Corn Production Systems, Paige E. Mckittrick

Murray State Theses and Dissertations

Herbicide use is central to weed management in Illinois corn production; however, long-term changes in the balance between systemic and contact herbicides have not been well quantified at the statewide scale. This study analyzes herbicide trends in Illinois corn from 1982 to 2016 using secondary data from the USDA Agricultural Chemical Use Survey, paired with climate, regulatory, and herbicide resistance information. Herbicide active ingredients were classified into systemic and contact functional categories and grouped according to Weed Science Society of America (WSSA) mode-of-action (MOA) codes. For each survey year, total herbicide load (lb a.i./acre), functional proportions, MOA-specific contributions, and a …

The Economic Impact Of The Georgia Young Farmers Association On Georgia's Economy, Robert E. Bodiford Iii

Murray State Theses and Dissertations

Agriculture is Georgia’s largest economy, generating billions of dollars annually. Sustaining this sector requires ongoing investment in human capital through education, training, and leadership development. While research has extensively examined youth agricultural education, limited attention has been given to the economic contributions of adult agricultural education programs. The Georgia Young Farmers Association serves as a primary provider of structured adult agricultural education in the state, offering continuing education through meetings, farm tours, workshops, and leadership development activities. The purpose of this study was to estimate the economic impact of the Georgia Young Farmers Association on Georgia’s economy[BL1] . The …

The Effect That Positive And Negative Self-Concepts Have On Adolescents' Behavior And Personalities, Portia L. Davis

Murray State Theses and Dissertations

Abstract

The development stage of adolescence is a complex process in which adolescents begin to explore their identity and form either a positive or negative self-concept. Self-concept plays a crucial role in shaping adolescents' personalities and behaviors. Self-concept includes how adolescents view themselves and how others see them. An adolescent's self-concept can influence their self-confidence, social relationships, and decision-making abilities. This study examines the relationship between overall self-concept and adolescents' personality traits and behaviors. To gather this information, a quantitative research design is used, in which adolescents complete assessments such as the Tennessee Self-Concept Scale (TSCS), the Woodcock-Johnson IV (WJ-IV), …

Classifying Surfaces With Handle Decomposition, Elizabeth Sipes

Murray State Theses and Dissertations

Among topological spaces, manifolds draw a lot of interest. An
n-manifold is a space that is locally like R^n. Manifolds of dimension 2
are called surfaces. Using handle decomposition, we decompose surfaces
into k-handles, where 0< =k< =2. Techniques such as handle sliding and
handle cancellation allow us to get a more favorable representation of
our surface. We use these tools and calculation of the fundamental group
to classify all compact surfaces.

"It's Dangerous To Go Alone": Examining Npcs As Influential Social Agents In An Original Single-Player Rpg, Chloe Bella Whitfield

Murray State Theses and Dissertations

Parasocial Interactions (PSI) and Parasocial Relationships (PSR) may have the capacity to act as an extension of and supplement for healthy social interaction (Elvery, 2021). In some instances, PSI and PSR may even be used as a means to improve unfulfilled social needs and decrease feelings of loneliness (Jarzyna, 2021). It has been noted that digital media such as video games may produce parasocial encounters that are particularly unique, as they often simulate realistic, back-and-forth social interactions between users and a virtual agent (Elvery, 2022; Hartmann, 2008). The present study observed PSR formation between players and a non-player character (NPC) …

Barriers To Mental Healthcare Among Men, Adrienne White

Murray State Theses and Dissertations

Men are consistently less likely than women to seek professional mental health services despite experiencing significant rates of depression and psychological distress. Traditional masculine norms and depression-related stigma have been proposed as major contributors to this disparity. The present study examined the relationships among depression stigma, conformity to masculine norms, depression severity, perceived barriers to care, and attitudes toward seeking professional mental health treatment among adult men with current or past depression. Seventy participants completed measures of depression severity (PHQ-9), conformity to masculine norms (CMNI-30), depression stigma (DSS), attitudes toward help seeking (MHSAS), and perceived barriers to care (BMHS). Contrary …

Personality Assessment Inventory Profiles In Adults Seeking Autism Spectrum Disorder Assessment, Emily Kinsey

Murray State Theses and Dissertations

The current study aimed to examine differences in interpersonal functioning and response validity among adults presenting for autism spectrum disorder (ASD) assessment compared to those seeking services for other clinical concerns. The study used archival data from 238 client files collected in an outpatient clinical setting. Interpersonal functioning was assessed using the Dominance (DOM), Warmth (WRM), and Nonsupport (NON) subscales of the Personality Assessment Inventory (PAI; Morey, 1991). Response validity was evaluated using the Negative Impression Management (NIM) and Positive Impression Management (PIM) scales. A multivariate analysis of variance (MANOVA) showed no significant group differences across DOM, WRM, and NON …

Comprehensive Postsecondary Transition Planning For Students With Intellectual Disability In Florida, Sonia Y. Clark-Rosier

Murray State Theses and Dissertations

The purpose of this qualitative study was to explore the impact of early transition planning on parents’ postsecondary expectations for their child with an intellectual disability and to examine the benefits of planning, particularly when considering higher education opportunities. This study also probed the factors that contribute to the development of self-efficacy in special education teachers facilitating comprehensive transition planning. Schlossberg’s transition theory, with its four S’s—situation, support, self, and strategies—served as the theoretical framework. The data collection methods were document analysis, focus groups with special education teachers, high school teachers, and parents, and researcher observations. Seven themes emerged to …

Academic Growth From Preact To Act: The Influence Of Socioeconomic Status And Attendance In A Rural Alabama High School, Stacy L. Tinch

Murray State Theses and Dissertations

The purpose of this quantitative correlational study was to examine academic growth from the PreACT to the ACT among students attending a rural public high school in Alabama and to investigate whether socioeconomic status (SES) and attendance were associated with differences in that growth. Guided by Opportunity-to-Learn Theory, the study explored whether students demonstrated academic growth during high school and whether SES, attendance, or the interaction between these variables influenced growth outcomes. Archival student-level data were collected from four graduating cohorts. The final sample consisted of 384 students with complete records for PreACT scores, ACT scores, attendance, and socioeconomic status. …