Digital Commons Network^™

Top Tier 2.0: Community Partnerships, University Of Nevada, Las Vegas

Focus on Top Tier 2.0

Community Partnerships have a positive long-term impact on our local communities. UNLV leverages resources for the public good to advance the university and the communities it serves. The value of the university is demonstrated through collaboration and engagement with the community to provide expertise, service, and support.

The Scientific Landscape Of The Aging-In-Place Literature: A Bibliometric Analysis, Saman Jamshidi, Nastaran Hashemi

Architecture Faculty Research

The world’s population is aging and, as populations age, they exhibit an increased prevalence of chronic diseases, which can reduce the independence of elderly individuals. The set of initiatives known as aging in place, a common policy response to the aging population, is preferred by both the elderly population and policymakers. Aging in place is a broad and multifaceted topic that involves multiple stakeholders and academic disciplines. A science map of the literature on aging in place can help researchers pinpoint their efforts and help policymakers make informed decisions. Thus, this study maps the scientific landscape of the aging-in-place literature. …

Making A Career Out Of Teaching: Exploring Longevity And Resiliency In Tennessee School-Based Agriculture Teachers, S. Sirrena Wiggins, Blake C. Colclasure, Tyler Granberry, Christopher T. Stripling

Journal of Research in Technical Careers

The need for qualified school-based agricultural education (SBAE) teachers is often discussed in terms of teacher recruitment; however, retaining those teachers is also necessary to ensure the stability and longevity of SBAE programming. Through the lens of teacher resilience, this qualitative study sought to answer the question: What individual and social-ecological characteristics of Tennessee career agriculture teachers contributed to their resiliency and longevity in the profession? In response, we conducted a phenomenological study of Tennessee agriculture teachers with 15 or more years in the profession. After coding data from 15 interviews, six themes emerged: (1) Passion, (2) Support, (3) Adaptability, …

Integrated Transcriptomics And Proteomics Study Of Starvation Selected Drosophila Melanogaster, Aavash Adhikari

UNLV Theses, Dissertations, Professional Papers, and Capstones

Drosophila melanogaster, selected for starvation resistance exhibits phenotypic traits such as increased body size, slower development, reduced fecundity and obesity like characteristics including higher lipid reserves and cardiac dysfunction. While prior studies have explored the metabolic and biochemical changes in these flies, the underlying genetic and molecular mechanisms remain unclear. This study aims to investigate the gene expression and protein abundance in starvation-selected Drosophila through RNAseq, proteomics, and integrating both datasets using the MixOmics package in R. I found differential gene expression in the fat body at the third instar larval stage, particularly in pathways related to lipid metabolism, calcium …

Effects Of Parent-Implemented Video Self-Modeling On Conversational And Play Skills Of Young Children With Developmental Delays, Jessica Ain

UNLV Theses, Dissertations, Professional Papers, and Capstones

Social skills are an important part of child development, and children with developmental delays (DD) often show delays in conversational and play skills. The purpose of the current study was to investigate the effectiveness of parent training on parent implementation fidelity, effectiveness of parent-implemented video self-modeling (VSM), and evaluate the parents’ experiences and perspectives of the intervention. A nonconcurrent multiple baseline across participants was used to determine a functional relation of parent training to parent implementation fidelity and parent-implemented VSM to the scripted and unscripted play actions and vocalizations. A thematic analysis was conducted on parent interviews to determine the …

Real-Time Predictive Analytics For Healthcare Monitoring And Terrain Classification Using Data Streaming And Online Learning, Ayemon Baraka

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis develops a scalable, real-time predictive framework aimed at improving outcomes in healthcare monitoring and gait classification. Specifically, it addresses two primary applications: early detection of cardiovascular events, myocardial infarction (MI) and arrhythmia, through continuous analysis of ECG data streams; and adaptive terrain classification from gait data. Utilizing data streaming technologies such as Apache Kafka and Apache Spark, coupled with machine learning models, this framework enables near real-time and precise predictions from high-throughput, real-time data. Furthermore, the integration of online learning frameworks, including the River API and TensorFlow I/O, allows for continuous model adaptation, enhancing the system’s responsiveness and …

Internationally Trained Teachers: Filipinos Working With Children With Disabilities In The U.S.: A Multiple Case Study, Joseph C. Abueg

UNLV Theses, Dissertations, Professional Papers, and Capstones

The United States (U.S.) is a major destination for teacher migration, with teachers being hired to fill shortages in math, science, and special education. In fact, the nation’s shortage of special education teachers has hit critical levels, further exacerbated by high levels of attrition. For these reasons, some school districts hire teachers from outside the United States on J-1 visas, including the Philippines.

To ascertain the experiences of special education teachers from the Philippines working in the U.S. on J-1 visas, a multiple case study was conducted. The study was anchored in the transnationalism tenet of AsianCrit, allowing participants to …

Exploring The Interactive Effects Of Officer, Subject, And Encounter Factors On Police Use Of Force Outcomes, Jeremy David Barnum

UNLV Theses, Dissertations, Professional Papers, and Capstones

Police use of force incidents are highly complex events that can be characterized by factors pertaining to the officers, subjects, and immediate encounter. These factors and the dynamic interrelationships between them encompass the situational context of use of force and have been widely studied in the criminological literature (Bolger, 2015). However, extant research has almost exclusively focused on identifying the main effects of situational factors on use of force with little consideration of how effects may vary across specific situational contexts. This limits our understanding of police use of force and complicates efforts to develop policy or training that ensures …

Biological Reduction Of Mixed Oxyanions In Wastewater Brine, Katherine J. Earp

UNLV Theses, Dissertations, Professional Papers, and Capstones

Treatment of contaminated brine water is an area of active research spurred by the use of advanced treatment technologies, such as membrane separation, reverse osmosis, ion exchange, etc. for water reuse and recycling, which has become critical due to the impact of climate change on water resources throughout the globe. Biological reduction of harmful organic and inorganic pollutants in water has been demonstrated as an effective method for water and wastewater treatment and would be a potential technology for brine treatment. However, biodegradation of contaminants in high salinity waters is challenging because most microbial communities cannot survive brine environments. The …

Understanding Levels Of Perceived Racism And Discrimination When Utilizing Perinatal Care, Alexandria S. Evans

UNLV Theses, Dissertations, Professional Papers, and Capstones

Social and structural determinants of health, grounded in historical racism and discrimination, significantly influence maternal health outcomes. Because of this, communities of color experience a higher burden of maternal health disparities. In the last several decades, there has been an increased awareness of the need to integrate critical race theory into public health research to address maternal health disparities in the context of perinatal care delivery, policy, and funding decisions.

This three-manuscript dissertation utilized mixed methods to examine the ways in which systemic racism and discrimination are perceived and how it impacts the utilization of perinatal care services in historically …

Effect Of Epistemic Cognition And Self-Regulation On The Evaluation Of Online Information, Devin T. Foschi

UNLV Theses, Dissertations, Professional Papers, and Capstones

While research has shown that epistemic cognition plays an important role in self-regulation, the way in which it does so in online contexts needs further research. The objective of this dissertation was to examine the relationship between Internet-specific epistemic cognition and Internet-specific self-regulated learning, and to use a mixed-methods approach in order to expand upon the way learners undergo the evaluation of information in online spaces beyond the traditional method of only using self-report measures and other common quantitative techniques. Using an explanatory sequential mixed-methods design, Phase 1 (N = 117) used quantitative methods to first look at the relationship …

The Assignment Despite Objection Construct: Its Efficacy And Utility In Measuring Nurse-Perceived Unsafe Staffing Events And Associated Outcomes, Debra F. Fox

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose: This three-manuscript approach provided a progressively built overview of Assignment Despite Objection as a construct used by nurses to document their perceptions of unsafe staffing events and as an unstudied concept in the staffing outcomes literature.

Background: All nurses have an ethical, legal, and professional responsibility to refuse or object to assignments they believe are unsafe for their well-being or their patient’s safety. Assignment Despite Objection being the only widely used construct nurses use to document these perceptual details. No studies have focused on Assignment Despite Objection as a construct or concept, leaving a complete gap in understanding its …

Social Network Analysis: How Social Media Groups Can Influence Policies Among Hispanic Families, Valeria Gurr

UNLV Theses, Dissertations, Professional Papers, and Capstones

The COVID-19 pandemic in March 2020 impacted the entire world in various ways. On March 15, 2020, education in Nevada was significantly impacted when the Governor announced the closure of public schools due to the pandemic. When the schools were closed, students were forced to stay home and receive their education through virtual instruction. This transition to distance education affected the Hispanic/Latino(a) communities in pronounced ways and highlighted issues such as limited access to the Internet, technology, lack of hardware devices, as well as language barriers and more. This study uses social networking analysis techniques to examine the nature of …

Uptake Of Contaminants Of Emerging Concerns (Cecs) By Plants Irrigated With Recycled Waters, Abid Hussain

UNLV Theses, Dissertations, Professional Papers, and Capstones

The increasing demand for water in arid and semi-arid regions necessitates the use of recycled water (RW) for irrigation. RW is a viable alternative to conventional irrigation water at most locations, but it can be a major route for contaminants of emerging concerns (CECs) to be taken up by the tissues of food crops, thereby leading to their subsequent entry into the food chain. CECs include pharmaceuticals, personal care products, and industrial chemicals that are generally present at low concentrations in environmental waters, hence their common designation as trace organic compounds (TOrCs), and CECs also include microbiological constituents such as …

Music And Narrative Memory, Maxwell Kayser

UNLV Theses, Dissertations, Professional Papers, and Capstones

Music can overlap with many activities, but its effects on our memory for those activities are not fully understood. The experiments here investigated the effects of calm and intense background music on both memory and narrative transportation (the feeling that one is absorbed into the events of a narrative) during reading. Participants read narratives either in silence or with background music and completed a measure of narrative transportation (Transportation Scale-Short Form; Appel et al., 2015). Participants were then tested, either in silence or with background music, on memory for explicit details and inferences from the narrative. Across both experiments, memory …

Physiology And Genomics At The Bottom Of The World: Genome To Phenome, Amy Christine Klink

UNLV Theses, Dissertations, Professional Papers, and Capstones

Mammals are exposed to a suite of physiological challenges based on the environment in which they inhabit. Animal individuals can overcome challenges associated with the dynamic nature of their habitat through variation in phenotypic traits. The plasticity of a phenotype relies on an individual’s genome and the transcription factors that act on regulatory elements. Species living in Antarctica display physiological specializations to withstand harsh conditions, such as severe cold temperatures, shifts in available ice habitat, and annual fluctuations in daylight. To explore the connections between an individual’s genome and its phenotype, we investigated two physiologies of the Antarctic Weddell seal …

Exploring Staff Nurses’ Perceptions Of Nursing Student Enculturation Within Clinical Teaching: A Focused Ethnography, Larizza Limjuco Woodruff

UNLV Theses, Dissertations, Professional Papers, and Capstones

The traditional clinical education model in nursing has utilized on-site learning experiences in clinical settings with patient encounters. With the growing complexity and demands of contemporary nursing care today, it is imperative to question the principal assumptions that guide the design and use of traditional clinical teaching experiences. Staff nurses working with nursing students can illuminate the impact of sociocultural workplace factors on clinical teaching and learning when preparing students for practice. Yet there is little known about staff nurses’ perspectives of nursing culture and how enculturation prepares nursing students for the profession. By understanding the perceptions of enculturation among …

Peer Led Learning Curriculum On Sexual Education, Hannah Harris

UNLV Theses, Dissertations, Professional Papers, and Capstones

Sexual education is a necessary course that teaches students about health and safety. There have been many obstacles that educators have faced in implementing into schools. This has led to a statewide division in how the topic is taught. Because of this, gaps in students' knowledge can lead to harmful practices or actions. A comprehensive sex ed, or CSE, needs to be utilized across the United States as this curriculum focuses on empirically based evidence and facts. Having an unbiased curriculum will improve student’s knowledge and help prevent parent backlash. However, sex ed needs to embrace peer-led learning as many …

Using Neighborhood Information To Improve Fiber Direction Estimation From Neuroimaging Data, Anjan Mandal

UNLV Theses, Dissertations, Professional Papers, and Capstones

Accurately estimating neuronal fiber directions is crucial in neuroimaging analysis. The Ball-and-Stick Model (BSM), introduced by Behrens et al. (2003), and widely used in software tools like FSL, remains one of the most popular models for this purpose. BSM analyzes each voxel individually, based solely on its signal information.In this dissertation, we propose modifications to BSM, that incorporate signal information from neighboring voxels in the estimation process, potentially improving the accuracy of the estimates. Additionally, within the estimation process, we introduce two novel proposal distributions to enhance the efficiency of the Markov chain Monte Carlo sampling procedure on the simplex …

Self-Regulated Learning Through Self-Concordant Goals, Social Modeling And Sustainability Focus, Oana Mandrutiu-Iancu

UNLV Theses, Dissertations, Professional Papers, and Capstones

Research has shown that when students spend time reflecting and autonomously selecting their college goals, they show high intrinsic motivation, low extrinsic motivation and improvement in emotional and social adjustment over the first several months of college. Despite of this, it is estimated that 77% of first- and second-year students are undecided on their major and many remain undecided as they transition into their junior and senior year. Moreover, in education settings the primary emphasis is on academic success, but focusing solely on academic goals is limiting. As learning is inherently social, academic and social domains cannot be separated, while …

How Couples Navigate Interethnic Differences In Asian American Population: A Grounded Theory Approach, Michelle Nakaula

UNLV Theses, Dissertations, Professional Papers, and Capstones

Several studies have discussed the impact of cultural factors in Asian American families. Previous research has demonstrated useful strategies used in dealing with distress and relationship dissatisfaction regarding cultural differences. There is limited data or studies that explore additional challenges faced by interethnic couples, rather than interracial couples and the impact of family dynamics on these relationships. Each partner’s identity development process was influenced by their understanding of different cultural traditions and customs. These unique experiences shaped their understanding of roles and expectations within their relationship and parenting styles. Additionally, these family relationships and cultural backgrounds play a role in …

Symptom Network Comparisons Between Pre- And Post-Concussion, Christine Salva

UNLV Theses, Dissertations, Professional Papers, and Capstones

Increased awareness about the short and long-term negative outcomes associated with sport-related concussion has resulted in active monitoring of cognitive and symptom profiles of athletes using a variety of assessments. The traditional approach to interpretation of cognitive and symptom measures has been based on a latent construct framework where domain scores reflecting latent constructs representing cognitive or symptom domains are collected at baseline and then compared to those obtained after concussion during the acute injury phase, with repeated additional assessments to determine when cognitive and symptom alterations have resolved. More recently, network approaches have been used to examine changes in …

Development And Testing The Predictability Of An Instrument Based On The Multi- Theory Model (Mtm) Of Health Behavior Change For Pre-Exposure Prophylaxis (Prep) Uptake Among People Of Color, Siddharth Raich

UNLV Theses, Dissertations, Professional Papers, and Capstones

HIV/AIDS continues to be a significant public health problem in the US and globally. In the US, it disproportionately affects people of color. In 2012, Pre-exposure Prophylaxis (PrEP) was approved by the FDA for HIV prevention. PrEP reduces the chances of acquiring HIV by 99% among people at high risk. However, PrEP uptake among people of color remains low. Therefore, this study aimed to develop and test the predictability of an instrument to describe the intent to initiate and sustain PrEP use among people of color. This research utilized an exploratory sequential mixed methods design based on the fourth-generation, multi-theory …

Developing A Remote Gamma Spectra Collection System For Radiation Sciences At The University Of Nevada, Las Vegas, Haven Searcy

UNLV Theses, Dissertations, Professional Papers, and Capstones

Educational institutions of all levels have been significantly impacted by the COVID-19 epidemic with none more so than higher education. The challenges faced by researchers are numerous while performing a study and have only increased since the pandemic. Many colleges or universities have halted research to cut off unnecessary contact in order to protect study participants and research personnel. In the Department of Health Physics and Diagnostic Sciences (DHPDS) at the University of Nevada Las Vegas, a solution was developed that would allow scientists and students alike to be able to analyze already prepared samples either in the lab or …

Removal Capabilities Of Zeolite And Zero Valent Iron With High-Level Waste Tank Radionuclides And Metals: Cesium, Strontium And Chromium, Colette R. Towles

UNLV Theses, Dissertations, Professional Papers, and Capstones

High level nuclear waste (HLW) has been disposed for temporary storage in underground steel tanks at the Department of Energy Nuclear sites. For example, at the Hanford Site, WA, and Savannah River Site (SRS), SC, HLW account for eighty-eight million gallons (Mgal) and 450 million Curies (MCi) of radioactivity. In the early nuclear activity at Hanford, the waste was discharged to single-shell steel tanks, and the lack of secondary containment allowed leaks, contaminating soil and groundwater. Despite tremendous efforts to stabilize the liquid waste at nuclear sites, treatment is complex, costly, and time-consuming; therefore, HLW may have to be stored …

Cultivating Nursing Student Competency Through Serious Gaming Simulation-Enhanced Prebriefing, Shopha M. Tserotas

UNLV Theses, Dissertations, Professional Papers, and Capstones

Problem: Simulation is an effective teaching strategy for undergraduate nursing students, providing a safe environment for learning in a low-risk setting. However, students are not fully prepared to take full advantage of high-fidelity simulation activities. The purpose of this study was to examine the impact of serious gaming simulation-enhanced prebriefing on student competency and simulation effectiveness. Methodology: The study employed a quantitative, cross-sectional, quasi-experimental design using secondary data. Participants included undergraduate nursing students in a southern private university. The students were enrolled in the prelicensure nursing program and the obstetric or the transition to practice course. The control group received …

Density-Driven Investigations Of Ruthenium Binary Compounds Rux2 (X = O, S, N), Melanie White

UNLV Theses, Dissertations, Professional Papers, and Capstones

Exploration and fine-tuning of the energy landscape of materials can be accessed by means of changes in material density, a key principle of high pressure research. Density-driven changes impact variations in oxidation states and coordination numbers for the element constituents of a compound. Pressure-induced modification of intrinsic density can promote the formation of new materials, variations in physical properties, and transformations in crystallographic symmetry. With this as our foundation, we focus on ruthenium binary compounds - altering the anion species to change electronegativity while probing pressure and temperature effects. This led us to the present study of ruthenium oxide RuO2, …

Tracking Joint Movement Using Optical Flow, Isabella Paperno

UNLV Theses, Dissertations, Professional Papers, and Capstones

We developed an algorithm that aims to move us closer to detecting early signs of arthritis. The program processes and analyzes X-ray videos using coyote and dog cadavers as models to examine the range of motion around the hip and connecting joints using optical flow techniques that track motion and velocity. We focus on how optical flow techniques track embedded metal markers and verify accuracy through comparisons with XMALab (X-ray motion analysis lab). Once proven as an accurate alternative, the focus will switch to markerless tracking and become a proof-of-concept for optical flow to be used in place of XMALab, …

Alteration Of Peripheral Cytokines In Alzheimer’S Disease, Zhengshi Yang

UNLV Theses, Dissertations, Professional Papers, and Capstones

Alzheimer’s disease (AD) is a progressive neurodegenerative disease with the clinical symptoms of gradual cognitive decline and memory loss. Biologically, abnormal accumulation of Aβ (Aβ) plaque and tau tangles in the brain are the core pathological hallmarks in AD. Although inflammatory response is not specific to AD, emerging evidence suggests that the disrupted innate immune system within the central nervous system, particularly microglial activation, might act as the bridge linking Aβ aggregation to pathological phosphorylation and aggregation of tau. The inflammatory response was suggested to initially have a neuroprotective role of attempting to clear Aβ plaques, and then become neurotoxic …

Integrating Deep Traffic Prediction And Environmental Impact Assessment Using Noisy Real-World Data In Las Vegas, Tarek Bin Zahid

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis introduces an integrated framework for advanced traffic prediction and real-time emission estimation, designed to aid urban planning and environmental monitoring. Utilizing a graph-based transformer model, it predicts traffic conditions across the Las Vegas road network, drawing on spatial and temporal data from a large-scale sensor network. The study significantly expands the dataset from 26 to approximately 900 sensors, enhancing predictive accuracy and regional coverage. Inspired by masking techniques and strategies tailored to incomplete datasets, the model effectively handles real-world, noisy data without relying on resource-intensive imputation. Innovative training approaches enable robust traffic flow predictions despite missing or imperfect …