Digital Commons Network^™

Iterative Silver-Label Refinement For Temporal Information Extraction In Biomedical Literature, Chan Lee

UNLV Theses, Dissertations, Professional Papers, and Capstones

Temporal information extraction plays a critical role in the biomedical domain, where the ability to identify events and their temporal relationships is central to interpreting research findings. However, annotated corpora for this task remain scarce and costly to produce and the existing models developed for clinical text do not transfer well. This work bridges that gap through iterative silver-label refinement. A temporal model originally trained on news-domain data is adapted to biomedical text through cycles of automatic labeling, targeted correction, and retraining without the need for comprehensive manual annotation.

Key contributions include a practical iterative refinement methodology demonstrating that the …

The Contribution Of Psychophysiological Stress Factors On Muscle Cramp Susceptibility, Lauren D. Levine

UNLV Theses, Dissertations, Professional Papers, and Capstones

Exercise-associated muscle cramps (EAMCs) are painful phenomenon that involves involuntary muscle spasms occurring during physical activity or directly after. 1 The landscape of the research on EAMC etiology has expanded from focusing on a single prevailing cause (e.g., hydration status) to a more holistic approach of how numerous factors contribute to the onset of neuromuscular fatigue, and the significance of each factor in those who suffer from EAMC. Following the multifactorial theory of cramp pathophysiology, this research sought to advance the knowledge of cramp susceptibility by investigating if there is a relationship between common psychophysiological factors like high anxiety, sleep …

Are The Dollars Equal? Investigating Racial And Geographic Disparities In New Market Tax Credit Allocations, Brian L. Maddox

UNLV Theses, Dissertations, Professional Papers, and Capstones

When Minority led CDEs are deprived an allocation of NMTCs and minority small businesses are deprived an investment, successes for minority communities are not as plentiful and economic gains are not shared in the community. Putnam (2000) believes economic empowerment of individuals in and from low-income communities can result in positive impacts to community dynamics, such as a reduction of disparities and enhance social cohesion. According to Putnam (2000) having examples of success breeds more success and often creates a community of individuals who form ties.

Shaping Narratives By Defying Math: How Black Congressional Candidates Frame Economic Issues From 2018–2022, Dante Allen Miller

UNLV Theses, Dissertations, Professional Papers, and Capstones

This dissertation moves the discussion of Black candidates economic policies beyond race to understand how Black candidates participate in racial capitalism. Using a mixed-methods approach, including textual analysis, and multinomial logistic regressions, I interrogate how 374 Black candidates navigate economic framing. Candidates use four distinct economic frames, three of which are rooted in neoliberalism, traditional, welfare state, progressive, and vague values. I present the findings in three papers which examine framing via textual analysis, the intra-categorical differences, and differences by congressional district demographics. In the first paper I show that Black candidates framing of economic issues reinforces racial capitalism even …

From Flight To Hatching: Adult Sexual Dimorphism, Life History, And Egg-Stage Ecology Of Pseudocotalpa Giulianii, Mandylene Mountain

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Nevada endemic dune beetle Pseudocotalpa giulianii is currently known only from two dune systems in Amargosa Valley, Nevada, yet much of its life cycle occurs below the sand surface and remains poorly documented. This thesis addresses key gaps in adult-stage biology and egg-stage development that are relevant to understanding reproduction, vulnerability, and habitat requirements in this dunerestricted species.

To characterize adult sexual dimorphism and life history, I quantified morphological differences between males and females and measured sex-specific adult survival under laboratory conditions relative to the aboveground flight season. Males and females overlapped broadly in external body size, but tarsal …

Sense Of Belonging And Professional Identity In Acute Care Occupational Therapists: A Phenomenological Study, Shania Marion D. Novilla

UNLV Theses, Dissertations, Professional Papers, and Capstones

Occupational therapy practitioners (OTPs) play a crucial and demanding role in acute care, addressing complex diagnoses and facilitating safe discharge; however, the fast-paced biomedical environment often pressures them to compromise their occupation-based philosophy, potentially leading to professional burnout and low retention rates. Although professional identity (the self-perception of one's role) and a sense of belonging (feeling valued and connected) are recognized as correlated concepts vital for professional resilience, this relationship remains critically underexplored within the acute care OT population. Guided by the Occupational Adaptation Model (Schkade & Schultz, 1992), this qualitative study explores how experienced occupational therapists working in an …

Skin Of Frog And Scale Of Dragon: Nutritional Cues, Life Cycle Kinetics, And Secretome Dynamics In Batrachochytrium Dendrobatidis, Naomi C. Okada

UNLV Theses, Dissertations, Professional Papers, and Capstones

Nearly 50% of amphibian species are at risk of extinction, making them the most threatened group of vertebrates on the planet. A major driver of these declines is the pathogenic chytrid fungus Batrachochytrium dendrobatidis (Bd), which causes the fatal skin disease chytridiomycosis. Since its discovery in the late 1990s, Bd has been directly implicated in the extinction of 90 species of amphibians and the declines of hundreds more. Despite this devastating ecological impact, relatively little is known about its basic cellular biology.

Bd has a multi-stage asexual life cycle consisting of a motile and infectious zoospore, which encysts (into a …

Implications Of Role Ambiguity: Task Assignments For Secondary Assistant Principals, Melonie Poster

UNLV Theses, Dissertations, Professional Papers, and Capstones

Despite increasing calls for equity and instructional leadership development, the role of the assistant principal (AP) remains inconsistently structured across schools. Research suggests that APs are frequently assigned managerial responsibilities, while access to instructional leadership experiences associated with principal preparation may vary (Goldring et al., 2021; Gonzales et al., 2022; Pollock et al., 2017). Grounded in the Learning-Centered Leadership (LCL) framework, this study examined how leadership responsibilities are prioritized and distributed among secondary APs in Nevada’s Clark County School District (CCSD) and whether assignment patterns vary by AP and school characteristics.

Survey data from principals and APs were analyzed to …

Effect Of The Sava Syndemic On Hiv Viral Suppression Among People Living With Hiv In The United States: A Scoping Review And Meta-Analysis, Jacquelyn Rodriguez

UNLV Theses, Dissertations, Professional Papers, and Capstones

The SAVA syndemic highlights the interconnected and mutually reinforcing nature of substance use, violence victimization, and HIV/AIDS. The synergistic interaction of these conditions creates structural and behavioral barriers that disrupt the HIV care continuum and contribute to significant health inequities. Achieving a suppressed viral load is a critical clinical outcome for people living with HIV, while viral non-suppression can be an indicator of poor health, elevated transmission risk, and disease progression. Still, the association between SAVA factors and viral suppression/non-suppression outcomes within U.S. populations remains inconsistently characterized due to heterogeneous methodologies and variable inclusion of high-risk groups. This mixed-methods study …

At The Crossroads Of Traditional And Nuclear Forensics: Decontaminating Radiologically Contaminated Dna Evidence Using Magnetic Beads, Rin Nyx Ruby

UNLV Theses, Dissertations, Professional Papers, and Capstones

Known for its impressive discriminatory power, deoxyribonucleic acid (DNA) fingerprinting stands as the “gold standard” of forensic investigation. However, complications arise when such evidence is contaminated with radioactive material. Though biological samples exposed to ionizing radiation can still yield comprehensive DNA profiles, most forensic laboratories lack the facilities which meet the safety and security requirements necessary for handling radioactive material. While nuclear facilities can decontaminate samples prior to forensic analysis, conventional methods for radiological decontamination – such as mechanical cleaning and chemical washes – may degrade the quality of the forensic evidence. The purpose of this study is to evaluate …

2d And 3d Insights Into The Formation And Emplacement Of Martian Meteorites, Sierra Rhaye Ramsey

UNLV Theses, Dissertations, Professional Papers, and Capstones

Martian meteorites are the only samples currently available from Mars, making their study critical for understanding martian igneous processes. Despite extensive study over the last five decades, the formation (e.g., mantle sources, crystallization pressures), emplacement (e.g., intrusive versus extrusive), and shock histories of these rocks remain uncertain due to their innate lack of geologic context and limited petrologic tools calibrated for martian conditions. This dissertation analyzes a large suite of 22 igneous martian meteorites using complementary 2D and 3D analytical methods to better constrain the magmatic, emplacement, and shock processes responsible for their formation and ejection from Mars.

Chapters 2 …

Model Based Control And Hil Verification Of An Integrated Battery Management System, Catalin Sabou

UNLV Theses, Dissertations, Professional Papers, and Capstones

The rapid advancement of electric vehicle technologies necessitates highly reliable Battery Management Systems (BMS); however, validating embedded supervisory logic presents a notable challenge. While physical pack testing is accurate, it is costly and hazardous for early stage software evaluation. This thesis presents the design, implementation, and rigorous validation of an integrated BMS developed for the Battery Workforce Challenge, bridging the gap between model based design and safe hardware execution. The core of this work is a model based supervisory controller, developed in MATLAB/Simulink and executed on an STM32G4 embedded target. To facilitate embedded validation while preserving a representative battery environment, …

Collaboration Between Non-Denominational Community-Based Support And Social Work Professionals For Substance Use-Related Family Crises, David Marcelo Siqueira

UNLV Theses, Dissertations, Professional Papers, and Capstones

Family social problems such as child maltreatment and domestic violence continue to impact vulnerable populations, despite societal progress. Evidence of negative results due to these factors is found not only in vulnerable populations in the United States but also throughout the world. These issues are often interconnected and cyclical, with substance abuse both contributing to and resulting from familial trauma. Addressing such issues requires interdisciplinary interventions and socioecological models that consider the broader environments influencing an individual's well-being.

One such environment is the non-denominational Christian church. While churches have traditionally offered community support, the professionalization of social work, including licensure …

Evaluating An Educational Intervention On Screen-Time And Behavior Change: A Pilot Study, Kayla L. Sweeney

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background: Excessive screen time among adolescents has been associated with negative health outcomes, including sleep disturbances, anxiety, and depression. Despite growing awareness, many parents lack sufficient understanding of these risks and their impact on adolescent well-being. This project evaluated whether a brief educational intervention improved parents’ knowledge of the health effects of excessive screen time. Methods: A pre-and post-survey design was used to assess changes in parents’ understanding following an educational video intervention. The educational intervention consisted of evidence-based content highlighting the impact of screen time on mental health and sleep. The survey measured knowledge, beliefs, behavioral intentions, and strategies …

An Ex Post Facto Study: The Social Validity Of Two Evidence-Based Instructional Practices, K. Ryan Wennerlind

UNLV Theses, Dissertations, Professional Papers, and Capstones

For over 15 years, the opportunity for individuals with intellectual disabilities to continue education in inclusive postsecondary education programs has steadily risen (Baker et. al, 2018). Poor employment trends for these individuals has motivated institutions to provide more educational opportunities by increasing the number of such programs. Education is consistently linked to greater employment opportunities and the potential for greater earnings as more education is achieved (BLS, 2023). Research attests this connection by studying individuals’ experiences in education after high school. In addition to greater employment opportunities, those individuals receiving postsecondary education services are also earning wages at a higher …

Addressing Sexual Health For Older Veterans By Healthcare Providers: A Mixed Method Study, Andrew James White

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background: Older adults remain sexually active, yet sexual health is frequently under-discussed in healthcare settings, particularly within veteran populations. Sexual health is essential to overall quality of life, and prior studies have shown that older patients value these conversations. However, veterans often face unique factors such as military-related trauma, including military combat exposure and post-traumatic stress disorder, in addition to compounded stigma from these topics in regards to open discussions about sensitive health issues to their healthcare providers. This study is significant in its potential to uncover systemic, cultural, and interpersonal influences that shape these dynamics, with a particular emphasis …

Navigating The Unknown: Understanding The Impact Of Mentorship For First-Generation Students In Stem, Shanika Roshanie Wickramarachchi

UNLV Theses, Dissertations, Professional Papers, and Capstones

First-generation students often encounter systemic barriers and inequities in academic pursuits related to science, technology, engineering, and math (STEM). Many institutions implement mentoring programs to mitigate these challenges; however, the effectiveness of STEM mentoring relationships for first-generation college students has been underexplored in the empirical literature. The current study centers the voices of first-generation college students to explore how mentors and institutions can better support their success through STEM mentoring relationships. In addition, this study examines how mentors’ generational status informs how they approach mentoring relationships with first-generation mentees. Participants included mentors and first-generation mentees in STEM research mentoring relationships …

Disparities Between Rural And Urban Patients With Epilepsy In Oregon From Time Of Seizure Onset To Genetic Testing And Surgical Treatment, Bahar Madani

University Honors Theses

Drug-resistant epilepsy (DRE) is associated with significant morbidity and worsened outcomes when access to specialized epilepsy care is delayed. Rural populations may face additional barriers to neurological evaluation, genetic testing, and epilepsy surgery due to geographic and healthcare access limitations. This retrospective cohort study evaluated disparities in epilepsy care timelines among rural and urban patients treated at Oregon Health & Science University (OHSU), one of Oregon's two Level 4 epilepsy centers. Electronic health record data were reviewed for 110 patients, including 80 urban and 30 rural patients. Variables included age at seizure onset, age at genetic testing, age at epilepsy …

Within Melbourne: Landscape, Labor, And Material Culture In A Derbyshire Parish, 1650-1750, Mia Powell

Senior Honors Papers / Undergraduate Theses

In May of 1695, a group of inhabitants walked the grounds of the English locality of Melbourne (Derbyshire) and collected demographic data from every household within the parish boundaries. From this perambulation came a uniquely detailed census-type listing. Combining that listing with other available sources, including probate records, criminal litigation, property disputes, financial papers, antiquarian accounts, maps, and enclosure agreements from across seven record offices, this project uncovers the complex social and economic developments experienced by those who lived in Melbourne from 1650 to 1750. To analyze this well-documented parish, this thesis utilizes various methodologies. Nominal record linkage connects Melbourne’s …

Beyond English: Auditing And Mitigating Cross-Lingual Data Contamination In Multimodal Large Language Models, Pavan Dharma Adapa

Theses and Dissertations

This thesis extends data contamination auditing for multimodal large language models to multilingual settings. Using LLaVA 1.5 and a high-fidelity French parallel dataset derived from ScienceQA, the study evaluates how performance changes when identical image-question pairs are translated from English to French. The resultsshow a substantial cross-lingual performance decline and frequent flips from correct English predictions to incorrect French predictions, indicating that benchmark performance can depend heavily on memorized English-specific patterns rather than stable multimodal reasoning. To address this weakness, the thesis introduces an inference-time mitigation strategy based on perturbation ensembling and cross-lingual consistency aggregation. The proposed method reduces instance-level …

Design And Uncertainty Methodology In High Efficiency Filtration Media Testing, Jeremy Andrei Adriano

Theses and Dissertations

Electrospun nanofiber media are being developed as potential alternatives to conventional HEPA filtration materials due to their small fiber diameters and tunable microstructures. To support future testing of these materials, the Small-Scale Test Stand (SSTS) at the Institute for Clean Energy Technology (ICET) requires modifications to ensure accurate and repeatable aerosol filtration measurements. Electrospun filters introduce challenges including fragile media structures and uncertain filtration efficiencies that may allow particle penetration to downstream instrumentation. This work evaluates adaptations to the SSTS design to support testing of electrospun filtration media. In addition, an uncertainty framework for aerosol measurements obtained using a Scanning …

Improving Durability And Structural Integrity Of Southern Pine And Sweetgum Through Fabrication, Treatment, And Mechanical Testing., Ershad Ahmmed

Theses and Dissertations

This research integrates material modification, preservative performance, and engineered fabrication to enhance the long-term durability and structural reliability of southern pine and sweetgum for outdoor and structural applications. The first project investigates the effects of simulated checks and splits on the strength and stiffness of southern pine fence posts. By introducing controlled defects and conducting mechanical testing, the study quantifies reductions in load-carrying capacity and evaluates how defect severity influences structural performance. The results provide insight into service life prediction and grading considerations for in-ground applications. The second project evaluates water ingress behavior in creosote-treated sweetgum using wetting angle measurements …

Impacts Of Structural Design On Oyster Survival And Predation In Restored Oyster Reefs, Jaden Akers

Theses and Dissertations

Restoration efforts are critical to ensure healthy oyster populations, but the high cost and marginal success rate of many restoration efforts demonstrates the need to evaluate alternative oyster reef restoration designs and strategies. To address this issue, I conducted a paired field and mesocosm study to assess the influence of structural design on oyster survival and predation. Results of the field portion of this study showed that oyster survival was greatest in short and bed-level (i.e., sitting on the sea bottom) reef designs. When assessing how design features impact oyster drill activity, elevated reefs (i.e., elevated above the sea bottom) …

Enhancing Professional Development Opportunities For Mississippi Early Childhood Education Technology Students, Sheri H. Anders

Theses and Dissertations

This capstone project examined professional development opportunities for early childhood students enrolled in Early Childhood Education Technology (ECET) programs in Mississippi. Grounded in Situated Learning Theory and aligned with the National Association for the Education of Young Children (NAEYC) Professional Standards and Competencies, this study used a desk-based systematic literature review to examine how ECET students engage in professional development during preparation, how standards-aligned experiences support preparedness and professional identity development, and what barriers limit access to meaningful opportunities. Findings indicate that professional development during preparation is often informal and inconsistent; however, participation in professional communities such as conferences, coaching, …

Institutional Predictors Of Overall Retention And Graduation Rates For Black Male Students At Public Two-Year Colleges In The Southeastern United States, Jonathan Larry Armstrong

Theses and Dissertations

This quantitative, cross-sectional, non-experimental study examined institutional characteristics associated with retention and graduation outcomes at public two-year colleges in the Southeastern United States. Using data from the Fall 2023 Integrated Postsecondary Education Data System (IPEDS), the study analyzed institutional student–faculty ratio, core expenditures per full-time equivalent (FTE) student, and academic support expenditures per FTE as predictors of institutional full-time fall-to-fall retention rates for all students and 150% graduation rates for Black male students. Descriptive statistics indicated substantial variation across institutions in spending and student outcomes. Simple linear regression analyses revealed no statistically significant relationships between student–faculty ratio or core expenditures …

Machine Learning-Based Decision Support Models With Applications In Postsecondary Education, Marco Paolo Anglesio

Theses and Dissertations

This dissertation investigates the deployment of machine learning methodologies in an industrial engineering framework for the development of advanced decision support systems in the context of enrollment management. Drawing on techniques from educational data mining, the research addresses three key phases in the lifecycle of traditional and non-traditional students. First, it analyzes student retention using predictive classification models designed to identify individuals at elevated risk of attrition. Second, it employs temporal convolutional networks for time series forecasting, estimating aggregate enrollment levels over highly variable, finite planning horizons on the basis of partially observed data and using an asymmetric loss function. …

On The Bias And Variance Of The Plug-In Estimator For Generalized Shannon’S Entropy, Shirli Salihaj Arndt

Theses and Dissertations

This dissertation analyzes the bias and variance of the plug-in estimator for generalized Shannon’s entropy. The setting is discrete data where observations take categorical values and the statistical object of interest is a probability distribution on an alphabet of possible outcomes. In such problems, entropy provides a relabeling-invariant summary of dispersion, but estimation can be challenging when the number of possible outcomes is large relative to the sample size. In addition, on some countably infinite alphabets, the classical Shannon entropy may diverge, motivating alternative entropy-like targets. Generalized Shannon’s entropy is defined by applying Shannon entropy to an escort reweighting of …

The South Got Somethin' To Say!: Black Student Affairs Professionals Sustaining Equity Work Amid Dei Dismantling, Jaborius D. Ball

Theses and Dissertations

Scholarship within the academy extensively interrogates the realities of Black faculty but neglects the lived experiences of Black Student Affairs Professionals (BSAPs). This omission renders BSAPs labor and experiences institutionally invisible while reinforcing the narrative of equity work being a racial obligation pushed on Black professionals rather than institutional responsibility. Although representing 15% of the higher education workforce, this gross percentage is disproportionately concentrated in lower-paying, non-exempt staff positions (e.g., service, office/clerical) rather than in decision-making authority (CUPA-HR, 2025). Despite structural marginalization and inconsistencies, institutions rely on Black professionals to bear the brunt of racialized equity labor work classified as …

How Did A Pandemic Impact Park Usage Among The Older Adult Populations In Memphis, Tn?, Katherine Barlow

Theses and Dissertations

During COVID-19 older adults’ populations were a vulnerable demographic, and through a review of existing literature it was determined that there is limited research about park and outdoor space use during COVID-19 by older adults. This research seeks to address these gaps by examining how a pandemic impacted park usage among the older adult population (age 60+) in Memphis, TN at Shelby Farms Park. This study examines the comparison of park use during (2020-2023) and after (2023-present) COVID-19. A mixed methods approach was employed. Wilcoxon Signed Rank test was run to analyze the survey data and a significant statistical difference. …

The Effect Of Stem Recutting And Floral Food On Vase Life Of Zinnias Elegans, Lauren Elise Baskin

Theses and Dissertations

A recent shift in the cut flower market focuses on locally produced cut flowers, creating interest in the consumer mind. The vase life of these cut flowers varies by variety and species. Knowing the proper post-harvest protocol is crucial information, as this affects flower’s longevity. This research used a 2x2x2 factorial design examining the zinnias variation in vase life between the following test groups: zinnias with trimmed and untrimmed stems in tap water and trimmed and untrimmed stems in floral food solution. The results of the study indicated that zinnias placed in a floral food solution and were trimmed have …