Digital Commons Network^™

Better Gait Quality And Speed In Adults With Down Syndrome When Wearing Supportive Shoes Compared To Unsupportive Shoes And Barefoot, Bailey Gosse, Kimberly Nguyen, Zoe Zelensky

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background: Individuals with Down syndrome (DS), often experience a slower gait speed and decreased quality of gait. Different types of footwear have shown changes in gait in people without DS. The current study aimed to examine the differences between wearing commercially available supportive shoes, unsupportive shoes, and no footwear on gait quality and speed in people with DS.

Methods: In this repeated measures study, 20 adults with DS walked under three footwear conditions: supportive, unsupportive, and no footwear. Gait deviations were scored according to the Rancho Los Amigos Observational Gait Analysis (OGA) and gait speed was measured using the 10-Meter …

Development And Pilot Testing Of A Surface Discrimination Test For People With Lower Limb Amputation, Colin Kruger, Kyle Mcknight, Sharlene Lim, Samuel Straus

UNLV Theses, Dissertations, Professional Papers, and Capstones

Introduction: There is a lack of understanding as to how sensory loss and sensory deficits impact those with LLA. The purpose of this research is to determine the extent to which people with LLA can discriminate between surfaces underfoot, in order to better understand the relationship between people with LLA and their perception of the ground they are walking on. We developed a test to determine which qualities of surfaces may be easier to distinguish.

Methods: 10 unimpaired adults and 2 adults with LLA participated. Participants compared surfaces underfoot that consisted of ceramic, rough tile, gravel, sand, and sandpaper to …

Evaluation, Rating, And Numerical Modeling Of A Shock Mitigation Seat For High-Speed Craft Based On Laboratory Single Impact Testing, Darren Benn

UNLV Theses, Dissertations, Professional Papers, and Capstones

High-speed craft (HSC) are utilized in military and para-military maneuvers that are usually conducted in harsh environments. The Special Warfare Combatant-craft Crewmen (SWCC), a sub-unit of the United States Naval Special Warfare Command (NAVSOC), use an advanced HSC, known as the Combatant Craft Assault, to conduct coastal patrol and interdiction, and for infiltration and exfiltration of Navy SEALs. The United States Coast Guard, and the Drug Enforcement Agency (DEA), employ HSC for maritime patrol and to pursue ‘go-fast’ boats operated by contraband runners. In most of these intense applications, the mode of operation of the HSC results in planing. Planing …

Can Occupational Therapy Take A Hit? A Guide To High-Intensity Training In Stroke Rehabilitation, Jared Demke

UNLV Theses, Dissertations, Professional Papers, and Capstones

Objective: Stroke has been considered a leading cause of functional impairment (Tsao et al., 2022). Recent evidence has supported a treatment approach that increases dosage (Scheets et al., 2021). High-intensity training (HIT) has shown promising evidence for functional recovery poststroke (Crozier et al., 2018). There have been minimal programs related to Occupational therapy (OT) and HIT have been created (Lamoureux, 2023). This doctoral capstone focused on program development of the OT-based HIT program. Theoretical frameworks included the Model of Human Occupation and Motor Learning Theory to provide a foundational structure.

Methods: A needs assessment was performed at the Saint George …

Barriers To A Real Second Chance: Seeking Redemption While Set Up For Failure, Kara Forrai

UNLV Theses, Dissertations, Professional Papers, and Capstones

With the enactment of the Second Chance Act in 2008, there has been a need to better understand the effectiveness of prisoner reentry programs and the services that are provided within these programs. Since then, numerous articles have described the barriers that previously incarcerated persons encounter during reentry and how this increases the likelihood of recidivism. The goal of this current study is to understand what current barriers exist for individuals within a local reentry program and then to suggest future implementations that could reduce the impact of these barriers. To achieve this goal, qualitative research methods are employed to …

Roadblocks To Momentum: An Analysis Of College Major Gpa Restrictions And Stranded Students, Michael J. Hack

UNLV Theses, Dissertations, Professional Papers, and Capstones

College retention, persistence, and completion are key indicators of a successful institution, but six-year degree completion has remained stagnant in recent years (National Student Clearinghouse Research Center, 2022). Despite institutional efforts through success initiatives to keep students retained, one set of barriers to degree completion may be due to established major GPA restrictions and policies that prevent students from being able to declare their majors. Accordingly, students who are unable to declare their major but keep enrolling in courses may be in danger of becoming “stranded.” This quantitative examination of student data from one large public four-year college aims to …

Removal Of Permethrin And Bifenthrin Insecticides From Runoff Water By Activated Carbon Adsorption, Ernesto Hernandez

UNLV Theses, Dissertations, Professional Papers, and Capstones

Among the hundreds of pesticides and insecticides, pyrethroids-particularly permethrin and bifenthrin, have become very popular due to their high toxicity to insects and low toxicity to humans, leading to extensive use in both agriculture and urban areas. Pyrethroids have no discharge limits because of this, leading to a negative impact on surrounding ecosystems due to their high toxicity to fish and aquatic life. Due to their low solubility and long half-lives, they are prominent in the environment long after application with a high potential for getting transported in runoff water to nearby water bodies. In this study, DSR-C reactivated carbon …

Developing A College Readiness Skills Program Aimed At Improving Self-Efficacy For Foster Youth In Academic Settings, Natasa Janjusic

UNLV Theses, Dissertations, Professional Papers, and Capstones

The proposed work focused on the development and feasibility of a project aiming to introduce college readiness skills to youth who were in the foster care system in order to increase their perception of self-efficacy in an educational setting. With this increase in self-efficacy, foster youth who are generally disadvantaged when attaining and completing a college degree can have the skills necessary to combat this barrier. The project involved the development of contents of the program and the procedures performed at Bamboo Sunrise Foster Care Agency, where this Capstone project was carried out. Participants in the program consisted of three …

Spatially Fractionated Radiation Therapy Implementation At Intermountain Cancer Center, Anupreet Kaur

UNLV Theses, Dissertations, Professional Papers, and Capstones

Spatially Fractionated Radiation Therapy (SFRT) is a treatment method that distributes a non-uniform dose with alternating peaks and valleys within a tumor. It is an effective technique to treat large and bulky tumors with limited toxicity to surrounding Organs At Risk (OAR), which is normally hard to treat using traditional radiation therapy methods. It can either be delivered by using a three-dimensional conformal planning technique (either physical block or virtually using Multi Leaf Collimators (MLC)), or by Lattice Radiation Therapy (LRT) using Volumetric Modulated Arc Therapy (VMAT) technique. The scope of this work is to compare and implement SFRT treatment …

The Effect Of Transcranial Direct Current Stimulation Of The Dorsolateral Prefrontal Cortex On Muscle Fatigue Resistance, Taylie Thompson Liddell

UNLV Theses, Dissertations, Professional Papers, and Capstones

Transcranial direct current stimulation (tDCS) delivered to the dorsolateral prefrontal cortex (DLPFC) can increase endurance time in lower body cycling tasks. The purpose was to examine the effect of DLPFC-tDCS on the time to task failure (TTF) of a fatiguing contraction performed by hand muscles. The study used a double-blind, randomized, SHAM-controlled, crossover design. Participants completed two experimental sessions on separate days with a washout between sessions. All facets of the experiments were identical except the stimulation condition (DLPFC-tDCS or SHAM) that was given concurrent with the fatiguing contraction. The fatiguing contraction involved gripping a manipulandum with the index finger …

The Mitochondrial Membrane Potential As A Screening Tool For Immunostimulation, Kendra Mcglothen

UNLV Theses, Dissertations, Professional Papers, and Capstones

The rise of neuroinflammatory disorders highlights the importance of early detection and intervention for more effective treatment options. Neuroinflammation is associated with the pathogenesis of many neurological disorders, including Major Depressive Disorder, Alzheimer's disease, and Multiple Sclerosis. There has been a focus on neurons to advance our understanding of the underlying mechanisms of neuroinflammation and its role in neurodegeneration. However, recent studies have highlighted the pivotal role of glial cells, particularly microglia, in neuroinflammation due to their active participation in the immune response. This study investigates glial-specific indicators of morphology, metabolic changes, and drug efficacy in neuroinflammatory conditions. By analyzing …

Discerning Moral Injury, Alexandra A. Merletti

UNLV Theses, Dissertations, Professional Papers, and Capstones

Moral injury is a recently developed psychological construct used to explain trauma that cannot be adequately explained by post-traumatic stress disorder (PTSD). It arises from experiences in which sufferers feel that they have violated deeply held moral beliefs and has multiple negative long term health and professional consequences for individuals affected. In order to better understand moral injury, this study seeks to understand how it is identified in individuals by others and utilizes Christie’s (2018) Ideal Victim Theory and Gray and Wegner’s (2009) Moral Typecasting Theory as a theoretical framework. Participants for this study were 374 undergraduate students at the …

Needs Assessment For Implementation Of A Dedicated Admission And Discharge Nurse Position, Connie Ngo

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background: Patient turnover refers to when patients are admitted, discharged, or transferred to or from a clinical unit or another facility. Rapid patient turnover compels nurses to provide care in an environment where clinical demands exceed nursing care capacity. The excess of clinical demands can lead to rationing of nursing care and culminate in nursing stress and dissatisfaction. These negative effects on the nursing workforce subsequently have undesirable implications for patient and hospital outcomes. Implementation of a dedicated admission and discharge nurse (ADN) position can optimize patient flow, improve nursing satisfaction, and ultimately promote positive patient outcomes. Purpose: The purpose …

Parsing The Plains: Placing Emporia, Kansas In The Great Plains Midwest, Joseph Noce

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis examines the formation of a region that can be called the Great Plains Midwest. It shows this formation through the city of Emporia, Kansas, which grew in tandem with the region. The thesis also examines Emporia as a case study of the cycle of birth, growth, and stagnation visible across the Great Plains between the 1850s and 1910s. This era traces Emporia from its humble beginnings to a period of population stagnation that followed the Panic of 1893. Three chapters cover Emporia’s agriculture, railroads, and colleges and universities, comparing each to the same elsewhere in both the midwestern …

Boron-Doped Diamond As A Resilient Electrode Material In Molten Salts, Hannah Katherine Patenaude

UNLV Theses, Dissertations, Professional Papers, and Capstones

Molten salt chemistry has a range of applications within nuclear technology, including for the Molten Salt Reactors (MSRs) and pyroprocessing to recover valuable actinides for energy and national security needs. However, the high-temperature, corrosive nature of molten salts makes them particularly challenging to deploy on an industrial scale and study in benchtop measurements. Material accountability and corrosion monitoring of MSR fuels are essential components to the successful deployment of MSRs, and electroanalytical techniques like cyclic voltammetry (CV) and spectroelectrochemistry (SEC) can provide a wealth of information to describe salt systems in situ. To perform such measurements, it is imperative to …

“A Contradiction To Being A Teenage Girl”: Identity Gaps As Conceptualization Turning Points For Girl Activists, Madalena Robertson

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study employed a turning point analysis to document milestones that influence the development of activist identities in young girls. All participants (N = 19), between the ages of 16–23 years old, self-identified as an activist and participated in activist spaces. Through an analysis of semi-structured interviews and arts-based elicitation research, data revealed several turning point events that influenced participants’ activist identity development, as well as their personal definition of activism. These turning points, paired with the communication theory of identity (CTI) framework, highlighted how girl activists negotiate gaps in their activist identities by communicatively co-constructing an evolving definition of …

The Effects Of Nicotine On Growth, Surface Marker Expression, And Osteogenic Capacity Of Stem Cells From Human Exfoliated Deciduous Teeth (Shed) And Dental Pulp Stem Cells (Dpsc), Kaileen Rodriguez

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background: The gaining popularity of electronic nicotine delivery systems (ENDS) and inhaling aerosols (“vaping”) among young people have exposed them to unprecedented amounts of nicotine. Fourth generation ENDS manufacturers attract the adolescent demographic with a smooth vaping experience with enticing flavors such as “Piña Colada” or “Peppermint Blast.” Components of e-liquids in cartridges of ENDS combine protonated nicotine, also referred as nicotine salts, with flavors in a propylene glycol or vegetable glycerin solvent. Unregulated, high amounts of nicotine in ENDS products have been associated with increased levels of nicotine in the circulating blood of users with an average concentration of …

Evaluation Of The Extent Of Floods In 2022 In Different Land Cover And Land Use Classes In Sindh Province, Pakistan Using Sentinel-1 And Sentinel-2 Imageries, Alina Shrestha

UNLV Theses, Dissertations, Professional Papers, and Capstones

Floods are one of the most frequent and most devastating natural disasters, which cause widespread destruction and pose significant risks to human life, infrastructure, and the environment. Advancement in remote sensing technologies and methodologies have demonstrated their efficacy in disaster-related applications, such as the detection, monitoring, and analysis of floods. This study explores the utilization of Synthetic Aperture Radar (SAR) and optical imagery for flood extent mapping and studying the extent of flood over various land cover and land use classes in Pakistan's Sindh province, utilizing the cloud computing power of Google Earth Engine. The change detection method identified extensive …

Improving Occupational Therapy Student Utilization Through A Community Engagement Program For Individuals With Dementia, Andrew Stevenson

UNLV Theses, Dissertations, Professional Papers, and Capstones

The contents of this doctoral project include an introduction to some of the difficulties people with dementia face in regard to engaging in the community, and how that may impact their health. It goes on to support how occupational therapists (OTs) have the skills to provide treatment addressing this issue but have faced difficulty entering settings such as memory care. A literature review demonstrates some of the positive benefits that can result from providing people with dementia opportunities for community engagement and reveals some of the difficulties associated with providing quality dementia care. This helps to explain the purpose of …

Online Learning For Acid-Fast Bacilli Detection In Histopathological Images, Shizhao Wang

UNLV Theses, Dissertations, Professional Papers, and Capstones

The acid-fast stain is frequently used for laboratory diagnosis of tuberculosis. It is a labor intensive task requiring thorough examination of extremely high-resolution images to pinpoint the presence of the mycobacteria. This paper presents a machine learning assisted slide image analysis tool with the aim of aiding histopathology professionals in the accurate diagnosis of tuberculosis in patients through the analysis of microscopic imagery. The proposed tool combines a digital whole slide image viewer with an online learning framework. We also conducted a survey of different state-of-the-art online learning methods, and found that MIR with pre-training has the best performance on …

Simulation And Design Of Ion Traps Using The Method Of Fundamental Solutions, Trevor Taylor

UNLV Theses, Dissertations, Professional Papers, and Capstones

In this thesis I apply the numeric method, the Method of Fundamental Solutions (MFS), to solve for the fields create by ion traps in various configurations, such as quadrupole ion traps, linear ion traps, toroidal ion traps, and toroidal surface ion traps. The traps are then designed to maximize desired qualities such as minimization of their anharmonicity, and their ability to shuttle ions. A particular focus will be on the toroidal surface ion trap, as well as its ability to shuttle ions. This trap is planned for future experiments involving measurement of the electron Electric Dipole Moment.

Hunnenschlacht By Franz Liszt: A Transcription For Wind Orchestra With Accompanying Historical Context And Transcription Techniques, Dean Snavely

UNLV Theses, Dissertations, Professional Papers, and Capstones

This document includes a transcription of Liszt’s symphonic poem Hunnenschlacht. An overview of the work's historical context and a detailed explanation of the techniques used in transcribing the work for wind orchestra are included.

Identifying Trauma Related Predictors Of Dissociation In Maltreated Youth, Amanda L. Mraz

UNLV Theses, Dissertations, Professional Papers, and Capstones

Maltreated youth who experience traumatic dissociation are at an increased risk for various psychopathological difficulties. Much is still unknown about the machinations behind experiences of dissociation post-trauma. This study aimed to identify variables that place maltreated youth at risk for experiencing traumatic dissociation (e.g., dissociative amnesia, absorption and imaginative involvement, passive influence, depersonalization and derealization, and total adolescent dissociative experiences symptoms (A-DES)). Investigatory variables included demographic (e.g., age, gender, and racial identity), cognitive (e.g., resiliency and posttraumatic cognitions), and psychological (e.g., posttraumatic stress disorder symptoms (PTSD) and anxiety) factors. Classification and regression tree (CART) analysis was utilized to observe the …

An Exploratory Pilot Study On Generating An Emergency Evacuation Vr Experience For A Real-Life Building Without Existing Bim Or Floor Plans, Naveed Ahmed

UNLV Theses, Dissertations, Professional Papers, and Capstones

With the rising frequency of active shooter incidents and fire hazards in both private and public facilities, it is crucial to establish a strategy for an effective emergency evacuation response for minimizing its consequences. Modern technological advancements such as virtual reality (VR) and game engines offer the potential to serve as valuable evacuation training tools within a virtual environment, aiding real-time decision making. Previous studies highlight the benefits of using VR simulations for emergency evacuation training, enhancing safety; however, two challenging factors exist that hinder their application. First, many existing structures (especially for older buildings) lack an available computer model/approach. …

Development, Voice, And Vulnerability: A Rhetorical Analysis Of The Policy-Making Discourse Regarding The Paris Agreement As An Organizational Response To Climate Change, David Almanza-Canas

UNLV Theses, Dissertations, Professional Papers, and Capstones

On December 12, 2015, the Paris Agreement was officially ratified by 196 sovereign entities. This treaty represents a global call to action to ameliorate the impact of human activities on our environment, and it creates a means of cooperation through financial support and transparent industrial practices with the goal of promoting accountability across the world. This treaty and the discourse surrounding it present fertile ground for the academic understanding of persuasive practices in policy-making. By examining the rhetorical implications of the Paris Agreement as a global policy, scholars can gain new insight about the communities represented in the conversation as …

Investigation Of The Chemical And Electronic Structure Of A 2h Phase Mos2 Single Crystal, Mary Blankenship

UNLV Theses, Dissertations, Professional Papers, and Capstones

Molybdenum disulfide has a wide range of applications in energy conversion devices, like thin-film solar cells, batteries, bio sensors, and more. Although the properties of MoS2 and other transition metal dichalcogenides (TMDC) have been widely studied, disagreements and discrepancies regarding its electronic structure remain.

In this thesis, a highly-oriented synthetic 2H phase MoS₂ single crystal is investigated using a toolchest of spectroscopic techniques to uncover its chemical and electronic properties. Lab-based x-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS), inverse photoemission spectroscopy (IPES), and low energy electron diffraction (LEED) were performed at UNLV and combined with resonant inelastic soft …

Assessing The Risk Of West Nile Virus In The Southwestern United States, Bradon Bucher

UNLV Theses, Dissertations, Professional Papers, and Capstones

Climate change is an increasing public health threat that has been shown to influence Culex mosquito populations, the vectors of West Nile Virus (WNV). The main objective of this study was to determine which variables are most associated with WNV in the Southwest United States, defined herein as: California, Nevada, Arizona, and Utah. A Poisson regression model was used to analyze total cases from 2004-2020 using the following predictors: mosquito season temperature average, mosquito season precipitation average, bodies of water, and protected lands. Results indicated that precipitation average (P =.014) and the interaction between precipitation and temperature (P=.024) were significant. …

Unraveling Water Quality Issues In The Colorado River Basin: Utilizing Remote Sensing Satellite Images, Statistical, And Machine Learning For Improved Monitoring, Godson Ebenezer Adjovu

UNLV Theses, Dissertations, Professional Papers, and Capstones

This research was aimed at exploring innovative and cost-effective tools in understanding the spatiotemporal variability of water quality parameters in the Colorado River Basin (CRB), which includes the Colorado River and major reservoirs and lakes in the USA including Lake Mead. The river which arises in the state of Colorado and empties into the Republic of Mexico at the Gulf of California, is a source of water to seven US states and the Republic of Mexico and provides water to about 40 million people and million acres of farmlands in seven states in the western US and the Republic of …

Factors Associated With Caregiver Responsive And Non-Responsive Feeding Styles In Clark County, Nevada, Amanda Castelo Saragosa

UNLV Theses, Dissertations, Professional Papers, and Capstones

Early childhood obesity has increased significantly over the last few decades, reaching epidemic levels in the United States. Many interventions exist to alleviate early childhood obesity; however, little focus is on preventing obesity-related risks for children under two. High-quality child-caregiver interactions are deemed critical for preventing early childhood obesity development, but there is little information on the socio-ecological factors that influence a caregivers' feeding styles. This study examined socio-ecological factors associated with caregivers' feeding styles (responsive vs. non-responsive) for infants under two in Clark County, Nevada. This cross-sectional study utilized a survey targeted to caregivers (18 and older) with infants …

Addressing Challenges Faced By Public Organizations: The Central Role Of Agility At The Federal Level During The Covid-19 Crisis, Shuktika Chatterjee

UNLV Theses, Dissertations, Professional Papers, and Capstones

This dissertation investigates the role of organizational agility in public organizations (such as the United States Federal Agencies) and demonstrates how agility works in public institutions. This study explores how organizational agility within public institutions can lead to successes and prevent failures stemming from underutilized agility, identifies the societal demographics impacted by these outcomes, and offers recommendations for effectively implementing agility to enhance efficiency and societal progress. Agility in sum, is adaptability and proactiveness. If developed and practiced by public organizations, this process can avert prominent institutional failings that impede the dispersal of services and resources that would promote social …