Digital Commons Network^™

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 …

Exploring A Boxing Community Exercise Porgram For Women With Parkinson's Disease, Emily Truong

UNLV Theses, Dissertations, Professional Papers, and Capstones

Objective: The purpose of this capstone project was to explore the lived experiences of 10 women with Parkinson’s disease (PD) who participate in the Rock Steady Boxing (RSB) program, an exercise community-based non-contact boxing program. Because women remain underrepresented in PD research and exercise-based interventions, this project aims to better understand how women perceive the physical, emotional, and social impacts of participating in RSB.

Methods: This qualitative case series included 10 women diagnosed with PD that participate in RSB at the Tony Cress Training Center. Data was collected through individual semi-structured interviews and audio recordings. Interviews were consented, transcribed verbatim, …

From Culture To Classroom: The Influence Of Professional Learning Communities On The Learning Organization And High-Cognitive Demand Instruction, Rebecca J. Tschinkel

UNLV Theses, Dissertations, Professional Papers, and Capstones

As schools face increasing pressure to prepare students for the complexities of the 21st century, the role of job-embedded professional learning has become paramount to school improvement. This study investigated the relationships among teacher perceptions of the characteristics of Professional Learning Communities (PLCs), the dimensions of the school as a Learning Organization (LO), and the frequency of high-cognitive-demand instructional practices. Grounded in Learning Organization Theory and the concept of evidence-based PLCs, this research sought to determine whether collaborative teacher structures could serve as a predictive lever for instructional rigor, regardless of school demographics, and to examine their influence on the …

Application Of Occupational Therapy Task-Oriented For Chronic Post-Stroke Rehabilitation: A Case Study, Gia Nghi Vu

UNLV Theses, Dissertations, Professional Papers, and Capstones

Stroke remains the leading cause of long-term disability, with persistent upper extremity (UE) impairment limiting engagement in daily tasks, reducing quality of life and contributing to learned non-use in the chronic stage among stroke survivors. The Occupational Therapy Task Oriented (OTTO) approach is proposed to optimize occupational performance through the use of meaningful, functional and highly individualized tasks that enable clients to fulfill their valued roles and participate in desired daily activities. The purpose of this capstone project was to advance clinical skills by applying the OTTO approach to examine its effect on occupational performance and UE motor function in …

Development And Evaluation Of A Training Program On Pain Assessments For Pediatric Care Teams In Skilled Nursing Facilities, Rudy Velasquez-Correa

UNLV Theses, Dissertations, Professional Papers, and Capstones

This capstone project was a program development and quality improvement initiative at Silver State Pediatrics focused on improving consistency and confidence of pediatric care staff in assessing and documenting pain in children, particularly those who are non-speaking and medically complex. Although validated tools such as the Face, Legs, Activity, Cry, Consolability (FLACC), revised-FLACC (R-FLACC), and Non-communicating Children’s Pain Checklist-Revised (NCCPC-R) exists, inconsistent training and limited interdisciplinary communication have led to variability in clinical practice. This project involved implementing a brief, 20-30-minute interdisciplinary training session for nursing and rehabilitation staff on the use of validated pediatric pain assessment tools and collaborative …

Visual Interpretability Of Multimodal Tissue Perfusion Classification Using Grad-Cam And Saliency Maps, Metehan Zorluoglu

UNLV Theses, Dissertations, Professional Papers, and Capstones

Accurate identification of the tissue perfusion phase from hand images can aid doctors in decision-making with non-invasive techniques. The present study proposes a multimodal deep learning model for classifying the tissue perfusion phase using infrared, thermal, and visible spectrum images of the human hand. The proposed model consists of various preprocessing techniques such as manipulation, homography alignments, and masking. The significant contribution of this thesis is the interpretability analysis of deep learning models, achieved through the analysis of saliency maps and the Gradient-weighted Class Activation Mapping (Grad-CAM) methods. The purpose of this method is to find out how the convolutional …

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 …

An Authentic Key To Universality: The National Sound Of Tajčević And The International Sound Of Milojević In Serbian Piano Music, Nikola Šćepović

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis argues that the authenticity of the works of Marko Tajčević and Miloje Milojević arises from their deep artistic response to the cultural and historical environment in which they lived and created, while their universality lies in their ability to articulate this authentic language within established artistic forms that resonate with a broader international musical community. It situates these works within the broader cultural context of Serbian music between the two World Wars, a period marked by the negotiation between national identity and European artistic integration.

It also explores the two formative directions of Serbian piano music, the music …

Vegetated Canopy Heterogeneity Footprints In The Roughness Sublayer, Giulia Salmaso, Raul Bayoan Cal, Marc Calaf

Mechanical and Materials Engineering Faculty Publications and Presentations

Turbulent flows over horizontally homogeneous rough surfaces are categorized as rough‐wall boundary layer flows, while flows over homogeneous vegetated canopies are better described through a mixing‐layer analogy. At present, numerous studies have investigated canopy density as a transition mechanism between rough‐wall and mixing‐layer‐type flows. Yet, most considered canopies have been spatially homogeneous, with few exceptions investigating agricultural arrangements. However, most vegetated canopies are not homogeneously distributed, but instead contain gaps and spatial heterogeneities of different scales. In these cases, it remains unclear which are the dominant flow traits, and how spatial heterogeneity affects them. To help overcome these knowledge gaps, …

Ecological And Nutritional Drivers Of Floral Fidelity In Wild Pollinators, Adelaide Elise Ergastolo

Master's Theses

Plants must receive pollen from the same species in order to successfully reproduce. For most flowering plants, the transfer of pollen occurs via animal pollinators while they forage on plants to obtain food. Therefore, the fidelity of pollinators to individual plant species during foraging trips is directly related to the amount of conspecific pollen plants receive. Low floral fidelity of pollinators can reduce plant reproductive success, which in turn has the potential to lower food resources for pollinators in the future. While many factors can potentially influence pollinator floral fidelity, several important ones may be the nutritional resources provided by …

Vietnamese American Anti-Imperialism: South Vietnamese History And Analysis Of Publications Pre-1975, Jeannie Nguyen

Master's Theses

During the Vietnam War, citizens contested US imperialism at multiple levels. In South Vietnam, citizens published newspapers and magazines to challenge their government and expose the depth of US aggression in South Vietnamese society and culture. Inside the imperial core, Black, Chicano, and Asian American activists formed solidarities to resist the war and challenge racial inequality. At the intersection of imperialism inside and outside its borders, lies a group of South Vietnamese students and scholars who became American, migrating during the war via state-structured projects. However, in response to the heightening of war and drawing inspiration from their ‘Third World’ …

Translating Ctdna Into Cutaneous Melanoma Care: An International Expert Survey, Glenn Geidel, Nathan Fekade, Katharina Raabe, Daniel J. Smit, Laura Adam, Isabel Heidrich, Alessandra Rünger, Julian Kött, Tim Zell, Teresa Amaral, Paolo A. Ascierto, Pippa Corrie, Reinhard Dummer, Alexander Eggermont, Jun Guo, Jessica C. Hassel, Mathilde Jalving, Douglas B. Johnson, Lidija Kandolf, John M. Kirkwood, Celeste Lebbé, Rebecca Lee, Georgina V. Long, Paul Lorigan, Josep Malvehy, Joanna Mangana, Peter Mohr, Sapna P. Patel, Helen Rizos, Caroline Robert, Dirk Schadendorf, Vernon K. Sondak, Inge Marie Svane, Alberto Wainstein, Jonathan S. Zager, Klaus Pantel, Axel Hauschild, Christoffer Gebhardt, Melanoma World Society Study Group, Adnan Khattak

Research outputs 2022 to 2026

Background: Circulating tumor DNA (ctDNA) is a promising biomarker in melanoma, with higher sensitivity for tumor burden detection than conventional diagnostics. While well established in research, clinical routine implementation remains pending. Key global questions concern optimal clinical applications and barriers to adoption.

Methods: A web-based survey of 116 members of the Melanoma World Society Study Group assessed international expert opinions on ctDNA utility across predefined clinical scenarios. The questionnaire included 18 general questions on ctDNA use and 5 clinical vignettes with de-identified patient data and retrospectively obtained ctDNA results.

Results: ctDNA was rated most valuable for detecting minimal residual disease …

Machine Learning Approaches For Predicting Biochemical Oxygen Demand And Ammonium Nitrogen: A Decade-Long Weekly Field Study At A Full-Scale Water Resource Recovery Facility, Hoda Khoshvaght, Ratish Ramyad Permala, Amir Razmjou, Mehdi Khiadani

Research outputs 2022 to 2026

Unlike previous studies that rely on high-frequency (15-min or hourly) datasets, this study is among the first to use low-frequency (weekly) data to evaluate the performance of linear and nonlinear machine learning (ML) algorithms for predicting biochemical oxygen demand (BOD) and ammonium nitrogen (NH4⁺-N) in the primary and secondary treatment effluents from the Subiaco Water Resource Recovery Facility (WRRF) in Western Australia. Various feature selection methods, including filters, wrappers, and embedded methods, were employed to identify the most effective approach that achieves the highest model performance while enhancing computational efficiency. The results demonstrate that a reduced set of …

Protecting Galápagos’ Marine Ecosystems: Biosecurity And Network Design Against Invasive Species From Tourist Vessels, Marnie L. Campbell, T.U. Le, Chad Hewitt

Research outputs 2022 to 2026

The modern world is characterized by high connectivity, enhancing economic productivity, and global communication, but outpacing our ability to manage its consequences. This connectivity increases the risk of pathogen, pest, and invasive species transmission. In the Galápagos islands, Ecuador, tourist vessel networks operate with limited restrictions and connect high conservation value locations, boosting tourism and the economy. These vessels frequently travel between multiple islands, leading to moderate connectivity and high vessel promiscuity. To prevent the spread of invasive species via these vessels, we propose a biosecurity system that combines social network tools with risk management frameworks that balances environmental protection …

Impact Of Travel Time To Health Facilities On Perinatal Outcomes: A Systematic Review With Narrative Synthesis And Meta-Analysis, Sanam Roder-Dewan, Marwa Ramadan, Paul Ouma, Alexander Manu, Emelda A. Okiro, Natalie Strobel, Bibian N. Robert, Emily Odipo, Peter M. Macharia, Anthony Danso-Appiah, David C. Goodman, Queen Dube, Gagan Gupta, Hema Magge, Karen Edmond

Research outputs 2022 to 2026

Background: Evidence-based global guidance on safe travel time for small or sick newborns who require transfer to health facilities after birth is lacking. A two-hour threshold is frequently cited in low- and middle-income countries (LMICs), while 30 minutes is commonly used in high-income countries (HICs). Although these thresholds are widely referenced, their empirical basis and consistency across levels of newborn care and journey types have not been systematically examined. This study synthesises the evidence linking travel time and perinatal outcomes. Methods: We conducted a systematic review with narrative synthesis and meta-analysis to assess the impact of travel time or distance …

Repetition Without Learning: Nine Years Of Safeguarding Adults Review Involving Acquired Brain Injury., Alyson Norman, Hannah Steed, Lucy Milliner, Mark Holloway, Joshua Deacon

School of Psychology

PurposeThe purpose of this paper is to produce an extensive review of safeguarding adult reviews (SARs) pertaining to individuals with acquired brain injury (ABI) since 2014. This review examines the lessons learned and recommendations arising from these reviews as they relate to health and social care practice in England.Design/methodology/approachThe review presented and discussed findings across multiple reviews and then applied narrative analysis to synthesise the findings and recommendations from the SARs reviews.FindingsThe authors identified 22 SARs relating to people with ABI that matched the inclusion criteria. Four main themes were identified: (1) ABI-responsive safeguarding policies and legal frameworks, (2) training …

Development Of Carbon-Fiber-Reinforced Composite Rotor Sleeves For High-Speed, Multi-Layer Ferrite-Based Interior Permanent-Magnet Motors, Andrew Walters

Theses and Dissertations

This research investigated whether a non-wound carbon fiber reinforced composite (CFRC) sleeve could serve as an effective retention mechanism for a high-speed, multi-layer ferrite-based interior permanent magnet motor. Material characterization testing was conducted on IM7/CYCOM-5320 and IM7/8552, with IM7/8552 selected due to its superior commercial availability. Experimentally obtained properties for both materials fell within acceptable tolerances of published values. Sleeves were manufactured to rotor design specifications (50-mm width, 1.2-mm thickness, 88.6-mm diameter) and tested per ASTM D2290 Procedure A to determine apparent hoop-failure stress. These experimental results validated a finite element model of the D2290 test, confirming realistic strain patterns …

Delayed Timing Of Spring Application Of Nitrogen In Corn, Elizabeth Mae Worley

Theses and Dissertations

Application timing of nitrogen (N) fertilizer within the corn growing season can be crucial to crop nutrient uptake and availability. A lack of region-specific timing recommendations may result in inefficient fertilizer use and inconsistent yield responses. The objectives of this study were to determine how late in the growing season a first and second N fertilizer application can be pushed until corn yield is impacted and investigate whether Growing Degree Days (GDDs) should be used as better estimate of timing for N application than calendar date or growth stage. First applications were able to be delayed until V4-V6 growth stages …

Assessing The Relationship Between Subsurface Geology And Surficial Geomorphology: Remotely Predicting Geologic Features And Geohazards Using An Elevation-Trained Machine Learning Algorithm In The Northern Gulf Of Mexico, Allison L. Wing

Theses and Dissertations

This thesis evaluates the capacity to predict subsurface geologic features and submarine landslide susceptibility using surficial geomorphology derived from bathymetric elevation data in the Northern Gulf of Mexico. Quantitative geomorphic variables including slope, curvature, aspect, rugosity, geomorphons, and Bathymetric Position Index were generated from 30-meter digital elevation models and used as explanatory variables in presence-only Maximum Entropy models. Known locations of faults, pockmarks, mud volcanoes, hydrocarbon seeps, and landslides (particularly intact scarps) were used to train and validate predictive models through k-fold cross validation. Model performance was assessed using omission rates and AUC values. Results demonstrate that specific geomorphic signatures, …

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 …

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 …

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 …

Community Development Professionals’ Perceptions Of Agritourism In Mississippi, Emma Jane Berry

Theses and Dissertations

Agritourism has emerged as a strategy for supporting rural economies, strengthening community identity, and increasing agricultural literacy. Although prior research has examined agritourism operators and visitors, limited attention has been given to the perceptions of community development professionals who influence local planning and program support. The purpose of this qualitative exploratory study was to examine community development professionals’ perceptions of agritourism’s role in community development, economic growth, and agricultural literacy in Mississippi. Guided by Social Exchange Theory, data were collected through two semi-structured virtual focus groups with 12 professionals representing Extension, tourism, economic development, and Main Street organizations. Data were …

Assessing Differences In The Frequency And Severity Of Osteoarthritis On The Mandibular Condyles Between Males And Females At Tell Abraq, Brittany C. Brown

Theses and Dissertations

Tell Abraq, a Bronze and Iron Age site in the United Arab Emirates, was a center of trade and cultural expansion during the Umm an-Nar period (2700–2100 BCE). Its multichambered tombs contain large, commingled burials, reflecting increasing sedentism and agricultural practices. This study examines mandibular osteoarthritis (OA) to explore lived experience and biomechanical stress. A total of 138 adult mandibles were analyzed for sex and OA severity. Results show generally mild and infrequent OA, though preservation limited analysis. Sex estimates suggested more gracile morphologies than previously identified. No strong sex-based differences in OA were observed. Overall, findings highlight the impact …

Characterization Of Water Quality In The Mississippi Sound Using In-Situ And Satellite Observations, William Elliott Butler

Theses and Dissertations

The Mississippi Sound is a highly productive estuary facing increasing pressures from natural disasters, oil spills, freshwater inflows, and coastal urbanization, yet it remains insufficiently monitored. In this study, key water quality parameters were quantified at 25 stations across the Mississippi Sound from 2024-2025 and integrated with Sentinel-3 satellite imagery retrievals to generate monthly turbidity maps from 2016-2025. Peak turbidity (~10 FNU) and TSS (~20 mg/L), reduced Secchi depth (~100 cm) and conductivity (~20,000 μS/cm), were observed from late winter to early summer; these conditions varied in fall and early spring. Colored dissolved organic matter was moderate, while chlorophyll-a and …

From Barriers To Opportunities: Adult Learner Decision Factors And An Implementation Plan For The Awarding Of Credit For Prior Learning, Kristi Leigh Dearing

Theses and Dissertations

With approximately 36 million adults in the nation having some college credit but no degree, these adult learners are the key to filling the gap in the workforce as more jobs will require postsecondary education by 2031 (Jeffe & Rollins, 2024; Carnevale et al., 2023). Adult learners returning to college after sometimes an extended absence encounter barriers that may impact the ability to enroll. Adult learners must balance financial, family, and work responsibilities while completing coursework. By awarding credit for prior learning through portfolio assessment, colleges and universities have an opportunity to recognize the value of the knowledge, experiences, and …

Regional Variability In Tornado Tracks: A Gis-Based Study Of Surface Roughness And Land Cover Differences Between The Lower Midwest And Southeast United States, Joshua Morgan Dison

Theses and Dissertations

Throughout the years, much research has been dedicated to the physical processes leading to tornadogenesis and tornado decay. Much of this research is centered around the inner workings of the supercell itself. Recent studies are now showing that tornadogenesis and decay processes may be generated by interactions with the Earth’s surface. This study examines longtrack tornadoes from 2001-2016 in the southeast and lower Midwest regions of the United States. Utilizing the National Land Cover Database (NLCD) and American Meteorological Society / Environmental Protection Agency / Regulatory Model (AERsurface) surface roughness values, efforts are made to see if statistical significance is …

Faculty Perceptions Of Transfer Students: How Characteristics And Experiences Inform Faculty Predispositions Toward Transfer Students In Senior Institutions, Tracey Ann Dubard

Theses and Dissertations

Faculty perceptions of student populations have been widely discussed, but the conversation has seldom focused on the transfer student population. Because a third of community college students choose to transfer into four-year institutions, the elements of the environment awaiting them are worthy of exploration. The classroom setting is a shared experience for transfer students. Therefore, faculty can play a significant role in creating a climate of support for this population. However, the opposite may be true. Transfer students often arrive on campus to find an environment that is mostly focused on traditional students. The lack of a supportive environment may …

Rethinking Social Disorganization In Rural America: Persistent Poverty, Institutional Fragility, And Crime, Addison Finch

Theses and Dissertations

Social Disorganization Theory (SDT) links structural disadvantage to crime through mechanisms such as residential instability, weakened social networks, and reduced informal social control in urban neighborhoods. Less is known about whether these mechanisms operate similarly in persistently poor rural communities where disadvantage is enduring rather than destabilizing. This study examines whether variation in poverty intensity predicts county-level crime in nonmetropolitan, persistently poor counties in Kentucky and Tennessee from 2016 to 2023. A balanced county-year panel (N = 344) integrates incident-based crime data with measures of poverty intensity and institutional capacity. Pooled ordinary least squares models with year fixed effects and …