Digital Commons Network^™

An Analysis Of Truancy Causes And Prevention Programming In Clark County, Nevada, Jennifer Ashley Fletcher

UNLV Theses, Dissertations, Professional Papers, and Capstones

In the United States truancy prevention is lacking two key elements to success; research that explains the causes of truancy and empirical evidence for best practices of truancy prevention. Truancy has been a problem in academics since the early 1900’s, when truancy became illegal. Since then, truancy rates have continued to see a steady increase, and today approximately 10% of public school students in the United States are truant every day (Maynard et al., 2017). To combat this problem, research needs to be conducted to understand why truancy happens. However, there is a severe lack of research on this topic; …

Predicting The Response Of An Underactuated, 3d Printed Prosthetic Hand, Lucas Gallup

UNLV Theses, Dissertations, Professional Papers, and Capstones

The continuing need for hand prostheses has led to incredible developments in this area. However, due to the cost of the most sophisticated models, it is vital to develop simpler, low-cost, underactuated prostheses that can be produced rapidly. 3D printing is an important tool to achieve this goal. In particular, the 3D printed Flexy-Hand 2 has been one of the most common low-cost designs. A key feature of the Flexy-Hand 2 is its use of tendons and thermoplastic polyurethane (TPU) for joints that are strong and flexible. TPUs, however, lack a thorough understanding of their mechanical behavior, which makes it …

Performance Effects Of Dissociated Hydrogen In Nuclear Thermal Propulsion Engines, Richard Adam Gorrell

UNLV Theses, Dissertations, Professional Papers, and Capstones

Nuclear thermal propulsion (NTP) research considers hydrogen dissociation as negligible to design and analysis of propulsion engines. This study reintroduces chemically reacting flow to NTP engine analysis for investigation of the dissociation effect on engine performance. A first-principles approach observes the basic chemical mechanism and reaction within the high-speed, high-temperature NTP flow to baseline expected atomic hydrogen levels and validate equilibrium. A surface reaction study looks into hydrogen absorption through dissociation and its effect on the boundary layer, and bulk flow. For total performance, the resulting dissociated flow is analyzed through nozzle expansion and performance metrics calculated.

All historic reactor …

Redirection Of Current In A Dense Plasma Focus, Rocky Gonzalez

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Mission Support & Test Services (MSTS) reports that significant amounts of energy needed for generating high energy neutrons is lost within a Dense Plasma Focus between its pinch-end of the anode stalk and at its base near the insulating sleeve. It is their mission and the goal of this research effort to both experimentally and theoretically study current redirection in a DPF during and after pinch dynamics. It is hypothesized that current redirection, due to restrike, behind the dynamic sheath of a dense plasma focus will result in a measurable change in the magnetic field along the longitudinal axis …

Suite De Ballet By Gustav Holst: A Transcription For Wind Orchestra, Charles Greggerson

UNLV Theses, Dissertations, Professional Papers, and Capstones

This document includes a wind band transcription of all four movements of Gustav Holst’s orchestral work Suite de Ballet, Op.10, H. 43. An overview of the background of the work and a historical background of the composer is included. The defense of transcriptions, criteria for selection of pieces and problems associated with the transcription process are examined along with the techniques utilized in the solution of problems within the context of this transcription.

A New Canon: Dismantling Racist Exclusion In Opera And Paving The Way For Inclusive Representation, Kourtney J. Holmes

UNLV Theses, Dissertations, Professional Papers, and Capstones

This document examines the exclusion of African American opera from the traditional Western operatic canon and standard performance practices within educational institutions and professional organizations. The narrow conception of opera as a European art form has obscured the contributions and cultural significance of works by pioneering African American composers. This study addresses this gap and elevates neglected histories by arguing for African American opera's artistic merit and contemporary relevance within the American operatic tradition.

Through musical and historical analysis of representative works from the late 19th/early 20th centuries onwards, I aim to illuminate the genre's unheard tales of struggle, identity, …

Standard And Non-Standard Log-Linear Models For 2 × 2 Contingency Tables, G M Toufiqul Hoque

UNLV Theses, Dissertations, Professional Papers, and Capstones

Log-linear models can be used to model the joint relationship of two or more categorical variables in a multiway contingency table. In a log-linear model, the logarithm of the expected joint counts (or the logarithm of the joint probabilities) in a contingency table can be written as a linear model.

Most log-linear models used in practice are standard. Standard log-linear models include the traditional parameter terms we see in ANOVA models: an overall effect, main effects, and various kinds of interaction terms.

Standard log-linear models are divided into hierarchical and non-hierarchical. Hierarchical models satisfy the hierarchy principle: if a higher-order …

Screening Of Orthodontic Patients And Age-Matched Non- Orthodontic Samples For High-Risk Oncogenic Human Papillomavirus (Hpv) Strains, Hunter Hinton

UNLV Theses, Dissertations, Professional Papers, and Capstones

Introduction: The human papillomavirus (HPV) is known to cause cancer in several tissues and organs, including the cervix and the oral cavity. Several oncogenic or high-risk strains have been identified, which include HPV16 and HPV18.However, other research has demonstrated that additional oncogenic, high-risk strains exist - including HPV31, HPV33, HPV35, HPV52 and HPV58, although much less is known about their prevalence. Based upon this lack of knowledge, the primary objective of this project is to address the prevalence of these strains among pediatric and adult patients through screening of saliva samples from the UNLV-SDM and orthodontic clinic populations.

Methods: The …

Pain Management Series For Stroke: Identifying Teaching Methods To Increase Clinical Self-Efficacy For Occupational Therapy Doctoral Students, Apasara Jittprasert

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose

Post-stroke pain has been identified as a significant challenge for individuals experiencing a stroke. Occupational therapists play a crucial role in the complex treatment of post-stroke pain but often face challenges due to a lack of self-efficacy in implementing treatments for stroke-related pain. This project’s purpose was to,1) to identify which teaching methods are effective for increasing clinical self-efficacy in doctoral occupational therapy students for implementing pain management treatment for individuals’ post-stroke and 2) to increase reported clinical self-efficacy levels among these students following the completion of a pain management educational program for stroke pain.

Methodology

This project recruited …

Persisting Inequity: School Administrators’ Social Dominance Orientation And Disciplinary Practices, Abigail Johnson

UNLV Theses, Dissertations, Professional Papers, and Capstones

Empirical research has established that exclusionary discipline is applied to black students at a higher rate than white students for similar offenses, and that this disproportionality cannot be attributed to the severity or frequency of misconduct. Exclusionary discipline, which removes a student from the educational setting, poses significant challenges to academic and social well-being and introduces a host of proximal issues for black students. This dissertation draws upon Social Dominance Theory (SDT), which examines how beliefs aligned to existing hierarchies perpetuate discrimination and oppression, to explore how administrators' anti-egalitarian beliefs and disciplinary practices influence the disproportionate application of exclusionary discipline …

Becoming A Bicultural High School Teacher In The United States: An Autoethnography Of A Latina Educator, Silvina Jover

UNLV Theses, Dissertations, Professional Papers, and Capstones

This research was guided by two autoethnographic questions, namely: How does autoethnography enable understanding of the needs of emergent bilinguals in the sociopolitical context of local and federal language policies in the United States? As well as extended by the following ancillary questions: a. What are the patterns and variations that emerge from journal entries crafted by the author of this study? And b. What are the patterns and variations that emerge from state and national news pieces between the years 2015 and 2020?

This narrative serves not only to present the challenges encountered within the field of multicultural education …

The Feasibility Of High-Intensity Training To Improve Self-Control And Occupational Participation In At-Risk Adolescents, Tashia Kaplan

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose

Adolescence is a challenging time navigating self-control and decision-making, creating vulnerability to developing poor habits and unhealthy behaviors. This feasibility study aimed to determine if a high-intensity training program (HIT) would improve self-control, health-related behaviors, and healthy occupational participation in at-risk adolescents in the Real Talk Youth Impact Program (Real Talk), measured by the Occupational Experience Profile (OEP).

Methodology

Three at-risk adolescent were recruited via convenience sampling from Real Talk to participate in a twelve-session HIT intervention, one participant completed all sessions. Researchers used a quasi-experimental exploratory sequential mixed-methods design to examine self-control, health-related behaviors, and occupational participation measured …

Liminal Embodiment And The Changing Parental Body, Torisha Khonach

UNLV Theses, Dissertations, Professional Papers, and Capstones

This dissertation sits at the intersection of sociology of the body, parenting, and life course to examine how the role and status of becoming a parent shape individuals' embodiment. Grounded in research highlighting body and embodiment as crucial, yet understudied aspects of social experiences, my study views biological changes as rooted in the social, where symbolic messages shape how parents think and understand their bodies and embodiment. The transition to parenthood serves as a unique lens for analyzing embodiment, as pregnancy, barriers to assisted reproductive technology, and adoption serve as evidence for the intersection of physical and social changes. My …

Analyses Of Thermal And Spectral Characteristics Of Artificial Turf And Natural Grass In Las Vegas Valley, Tarannum Kalam Khandoker

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis presents a comprehensive analysis of the thermal and spectral characteristics of Las Vegas Valley (LVV). The first objective examines the effects of artificial turf on the urban thermal environment in the LVV by analyzing the impact of Land Surface Temperature (LST) and surface albedo at 26 ROIs that transitioned from natural to artificial turf, alongside another 26 ROIs that remained unchanged between 2018 and 2022 utilizing available Landsat 8 satellite images for the respective years. In the comprehensive comparison of ROIs over the two years in question, it was observed that transitioning to artificial turf correlated with elevated …

Characterization Of Fibronectin Adhesion Isolated Dental Pulp Progenitor Cell Populations, Heoijin Kim

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background: The DPSC constitutes a significantly small population, comprising approximately 1% of the total cells in the pulp tissue. Therefore, it is imperative to successfully culture and populate DPSCs in vitro before utilizing them for therapeutic purposes. Understanding DPSC heterogeneity is crucial for innovative regenerative therapies, prompting the investigation of mixed populations using fibronectin as a biological marker. It is reported that cellular phenotype and biological function may undergo alterations as cells replicate in a cultured environment or the substrate to which the cells adhere.

Objectives: In this study, we compared and analyzed the impact of various isolation methods on …

Reframing Addiction As A Coping Response: A Needed Shift In Modern Public Health Paradigms, Anthony King

UNLV Theses, Dissertations, Professional Papers, and Capstones

What are the primary risk factors that compel one person towards addiction and not another? After decades of research, there is still no clear consensus. Some experts say addiction is a brain disease; others say it is a willful act, or even an outright crime. Nevertheless, the three research studies contained within this dissertation suggest an alternative, more parsimonious public-health-centered framework for viewing addictive behavioral patterns: as a biopsychosocial coping strategy for past and present stressors. In Study 1, this idea was examined by evaluating how symptoms of posttraumatic stress disorder (PTSD) were associated with problem gambling severity, different gambling …

Statistical Classification Using Selection And Ranking Methodologies With Statistical Learning, Jeong Jun Lee

UNLV Theses, Dissertations, Professional Papers, and Capstones

The subject of Statistical Classification is concerned with identifying and allocating future observations into one of the pre-categorized classes based on the characteristics of the objects. Typically, these decisions to classify and categorize the objects have been dependent on identifying a system of classification, and from there, determining attributes for sorting.

In past decades, from discriminant analysis, various methods have been developed for classification. In particular, the rise of artificial intelligence (AI), machine learning, and statistical learning theory has made it possible to consider improving the existing methods along with new developments and more comprehensive schemes in conjunction with data-driven …

Interdisciplinary Education On Using The Combilizer For Grooming Tasks In The Intensive Care Unit, Bonnie Lei

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose: The purpose of this study was to provide a teaching and learning program to the interdisciplinary team on how to use the Sara Combilizer with critically ill patients to increase efficacy for early progressive mobility (EPM) by facilitating grooming tasks. Methods: A teaching and learning program on using the Sara Combilizer to facilitate grooming tasks was provided to the acute care therapy team at a hospital. The program included an evidence-based lecture, a practice case study, and a digital instructional manual. The program was evaluated through a pre- and post-survey, and a quality improvement survey. The Wilcoxon signed-rank test …

Unraveling The Relationship Between Social Vulnerability Index And Covid-19 Prevalence In Southern Nevada, Andrea Lopez

UNLV Theses, Dissertations, Professional Papers, and Capstones

The COVID-19 pandemic was a catastrophic global event that exacerbated public health issues and disparities, especially in socially vulnerable communities. Thus, this study examines areas classified by the CDC's Social Vulnerability Index (SVI) metric, which assesses vulnerable communities experiencing adverse events through sixteen social determinants that impact health. The purpose of this study will be to determine if (1) COVID-19 testing rates and/or COVID-19 vaccination rates mediate SVI and COVID-19 prevalence rates and (2) if COVID-19 testing rate and COVID-19 vaccination rates serially mediate SVI and COVID-19 prevalence rates. In order to achieve this, census tracts within Southern Nevada will …

Triangulation Guided High Clearance Collision-Free Paths, Sandeep Maharjan

UNLV Theses, Dissertations, Professional Papers, and Capstones

Algorithms dealing with the construction of high clearance collision-free paths in the presence of polygonal obstacles is an important problem in robotics and transportation engineering. Method of extracting collision-free paths guided by triangulation of free space is examined. Two algorithms for improving the standard triangulation guided algorithms are presented. The time complexities of the presented algorithms are analysed. Finally, further applications of the proposed techniques are discussed.

Self-Perception And Positive Stereotype Endorsement, Aileen Lovitt

UNLV Theses, Dissertations, Professional Papers, and Capstones

The origin and reasoning behind the use of racial stereotypes has been a point of interest for researchers over the years. Many different theories have been proposed including those related to cognitive, evolutionary, and motivational explanations. However, most of these theories and the research backing them primarily focus on negative stereotyping. The origin of positive stereotyping, which also has negative implications associated with their use, has not been evaluated fully. Previous research has suggested that the motive to preserve self-worth and positive self-concept may play a role in stereotype endorsement. Two studies were conducted with the purpose of investigating whether …

Photoelectic Driven Decomposition Of Uracil Via Hard X-Ray Irradiation, Trimaan Malik

UNLV Theses, Dissertations, Professional Papers, and Capstones

Radiation damage into biological samples creates substantial challenges across a wide range of fields, from biochemistry to materials science. This comprehensive study investigates the effects of x-ray irradiation on uracil, the only nucleobase exclusive to Ribonucleic acid (RNA), to understand how doping with 10% (by mass) of specific powdered elements impacts the sustained radiation damage. The experiments were conducted at the Brockhouse Undulator Beamline of the Canadian Light Source synchrotron. Virgin and doped uracil samples were irradiated with hard x-rays, above their respective absorption edges, and studied with x-ray diffraction to compare their decomposition behaviors. The Uracil reflections on the …

Investigative Research On Design Parameters And Criticality Models For Microreactors, Cameron Jensen

UNLV Theses, Dissertations, Professional Papers, and Capstones

With increased energy demand and the desire to reduce reliance on fossil fuels, nuclear power will need to play a prominent role in achieving carbon-free energy independence. Large nuclear reactors are necessary to meet this objective. However, they are expensive and take a long time to build. For remote locations (e.g., military bases) and smaller communities, large nuclear reactors would not be feasible or cost effective. Small reactors (microreactors) can fill this necessary gap. These reactors would be factory-built, delivered quickly, and operated with high intrinsic levels of safety. With microreactors still in conceptual and testing states, there is a …

Compliance And Efficacy Of Orthodontic Medicaid In Southern Nevada: A Retrospective Study, Troy Mccartney

UNLV Theses, Dissertations, Professional Papers, and Capstones

Objective: The study’s main objective is to evaluate efficacy and compliance in Medicaid orthodontic patients compared to private insurance and cash (self-pay) patients in Southern Nevada. In addition, the paper will study the trends in approval selection such gender, age, race/ethnicity, and case type. This information will be used to discuss the barriers that Medicaid patients face and offer solutions for the issues found in the orthodontic Medicaid system.

Introduction: Medicaid coverage was brought forward by the Federal Social Security Act in July of 1965. Since then, there have been many discussions on how orthodontic treatment should be covered under …

Symphony No. 7 “Leningrad” By Dimitri Shistakovich: A Wind Band Transcription Of The Final Movement With Historical Context And A Description Of The Transcription Process, Scott Patrick Mcglasson

UNLV Theses, Dissertations, Professional Papers, and Capstones

This document includes a wind band transcription of the final movement of Dimitri Shostakovich’s “Symphony No. 7” known as the Leningrad Symphony. It contains an overview of the composer's life leading up to the creation of this work as well as a description of the historical context during which this work was composed. This document also contains a detailed description of the transcription and editing process that led to the completed work contained at the end of this document. The transcription process included examining other wind band transcriptions of Shostakovich’s music as well as other wind transcriptions of orchestral works.

Age, Gender, And Sexual Orientation And Their Effects On Online Dating Motivations, Jenna Leigh Mcpherson

UNLV Theses, Dissertations, Professional Papers, and Capstones

Online dating and dating apps are becoming more common as a means to meet a romantic or sexual partner (e.g. Rosenfeld, Thomas, & Hausen, 2019). Previous literature on the motivations for why people use dating apps and how they differ among participants of varying age, gender, and sexual orientation has not allowed for comparisons across these groups, or shows conflicting findings. In order to consolidate existing literature and further explore the topic, I conducted both a meta-analysis and meta-synthesis. The meta-analysis demonstrated a gender difference in the motivation of casual sex, such that men scored higher than women. The meta-synthesis …

Effectiveness Of A Virtual Simulation Program As A Novel Approach To Improve Clinical Judgment In Prelicensure Nursing Students, Monica Millard

UNLV Theses, Dissertations, Professional Papers, and Capstones

Problem: Limited clinical placement opportunities for practicing decision-making skills have widened the academic-practice gap. Research shows a disturbing decline in entry-level competency among newly graduated registered nurses. Innovative strategies like virtual patient simulation may foster decision-making skills and prepare prelicensure nursing students for practice. However, research is lacking in examining virtual patient simulation (VPS) as an effective approach for developing clinical judgment in prelicensure nursing students. The American Association for Academic Nursing has determined that clinical judgment is an essential nursing attribute. Moreover, the National Council of State Boards of Nursing developed the Next Generation National Council Licensure Exam based …

Behavioral Health, Mental Health, And Overall Well-Being Of Informal Caregivers Before And After The Covid-19 Pandemic, Zahra Mojtahedi

UNLV Theses, Dissertations, Professional Papers, and Capstones

Informal caregivers, such as relatives or close friends, are vital for maintaining the welfare of the individuals they provide care for. However, caregiving can be difficult and stressful that adversely impacts caregivers’ health. The extra stress brought on by the COVID-19 pandemic can potentially aggravate health problems, particularly mental health. The current research aimed to nationally analyze whether the COVID-19 pandemic was significantly associated with behavioral health (physical activity and smoking), mental health (worrying, nervousness, hopelessness, little interest, and psychological distress score), and the perception of overall well-being among informal caregivers in the United States. Whether behavioral health could mediate …

Voices From The Field: Black Women Who Have Successfully Transcended The Leadership Pipeline Into Superintendency, Brione A. Minor-Mitchell

UNLV Theses, Dissertations, Professional Papers, and Capstones

Black women have a distinct journey within the realm of education, one that can only be fully comprehended and articulated by Black women themselves. However, even with their insights, not all readers will grasp the intense scrutiny Black women face when they strive for leadership roles, particularly in superintendency. This study aims to delve into the experiences of Black women who have risen to superintendency, examining the challenges they've encountered. It seeks to address four key questions through the lenses of Critical Race Feminism and Black Feminist Thought: What barriers do Black aspiring women leaders confront as they ascend to …

Dismantling The Stigma Of "Strong Black Girl" & "Strong Black Boy:" Cultural And Gender Differences In Trauma And Suicidality Among Black Adolescents, Tiffany Mosier-Hunter

UNLV Theses, Dissertations, Professional Papers, and Capstones

Trauma exposure has been linked to a plethora of negative outcomes, including suicidality. Despite the abundance of research on the effects of trauma, little is known about its relationship with suicidality among adolescents. Moreover, even less research examines cultural and gender specific risk factors among Black adolescents. This study was founded on the cultural model of suicide, and the gendering of suicide theory, suggesting that suicidality in minority populations is influenced by cultural experiences (i.e., traumas) and perceptions of suicide, as well as gender differences that dictate where Black adolescents fall on the suicide spectrum. Using archival data (e.g., YRBSS) …