Digital Commons Network^™

Pediatric Trauma-Informed Care And Implications For Occupational Therapy Practitioners, Quaneka Hoskin-Chase

UNLV Theses, Dissertations, Professional Papers, and Capstones

Occupational therapy practitioners are provided a wealth of knowledge through school and professional fieldwork experiences to understand and skillfully address the needs of children who have been exposed to trauma. Therapists are competently prepared to provide holistic and client-centered care that is dedicated to meaningful and volitional engagement (Lynch et al., 2021). However, many therapists still lack the confidence and awareness of their role related to trauma-informed care in the pediatric environment (Piller, 2022). Trauma compromises each domain of occupation (Lynch et al., 2021). As early intervention specialists, the lack of responsiveness to children’s trauma can have devastating and enduring …

Biopsychosocial Occupational Therapy Interventions For Complex Regional Pain Syndrome – A Pilot Manuscript, Cinthia Hartman

UNLV Theses, Dissertations, Professional Papers, and Capstones

Occupational therapists (OTs) have an essential role in the treatment of upper extremity Complex Regional Pain Syndrome (CRPS) in outpatient therapy settings. Occupational therapy (OT) guidelines and research focus treatment on the Budapest Criteria’s biological signs and symptoms. The International Association for the Study of Pain (IASP) now recognizes CRPS as a primary chronic pain condition and not an autonomic disorder, as it was thought to be in the past. This recognition, along with the psychological and social impacts of the condition, highlight the need for updated OT treatment interventions incorporating a biopsychosocial model. Combining evidence-based CRPS OT interventions for …

The Impact Of Educating Interprofessional Healthcare Workers On The Role Of Occupational Therapy In The Cardiac Acute Care Setting, Jennifer L. Taosuvanna

UNLV Theses, Dissertations, Professional Papers, and Capstones

The acute care setting has been a vastly growing practice area for the occupational therapy profession. Occupational therapists assist clients in the acute care setting with activities of daily living retraining and functional transfer training to increase independence. Each client demonstrates a different discharge course from the acute care setting and occupational therapists play a key role in assisting the clients the most appropriate rehabilitative setting. All professionals in the acute care setting work cohesively to provide clients with the best outcome.

The doctoral project explored the importance of interprofessional healthcare worker education about occupational therapy practices in the acute …

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 …

Physiological And Biomechanical Response To Indoor Cycling With And Without The Ability To Sway, Alina P. Swafford

UNLV Theses, Dissertations, Professional Papers, and Capstones

Introduction: Bicycles have been around since the early 19th century. Since the invention of the bicycle, it has taken on several purposes. People have used bicycles as a means of transportation, leisure, exercise, and sport. The number of individuals who participate in a cycling event per year has increased. With the increase in popularity, research related to cycling has also increased. Research related to the physiology and biomechanics of cycling are of particular areas of interest. Balance is a crucial component of understanding why we cycle a certain way. Some research has labeled balancing on a bicycle as cycling sway. …

Exploring The Influence Of Technology-Supported Immersive Experiences: The Case Of Golf Simulators As A Way Of Relieving Stress In The Workplace, Luka Van Der Merwe

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study explores the impact of immersive technology, specifically golf simulators, on relieving work-related stress among hotel industry employees. The purpose of the current study was to examine how hotel employees perceive the use of immersive technology as a form of stress relief. The study was developed to learn whether hotel employees experience work-related stress, and if so, how they cope with it. The study also aimed to determine whether they would be interested in utilizing a golf simulator as a new form of stress relief if it were offered to them free of charge by their employer. Interviewing hotel …

The Impact Of The Covid-19 Pandemic Response On Food Safety Violations Observed In Southern Nevada Food Establishments, Samantha Morales

UNLV Theses, Dissertations, Professional Papers, and Capstones

Food poisoning is a common term used to describe what is actually foodborne illness. Despite the fact these illnesses can become deadly, foodborne illnesses are endemic and common in the United States. Nonetheless, they are completely preventable simply by following proper food safety procedures. The Food and Drug Administration identified the most common foodborne pathogens responsible for most foodborne infections, as well as the five risk factor categories to target in order to decrease the risk of cases and outbreaks.To ensure foodborne outbreaks and cases are prevented, health authorities are tasked with conducting routine inspections on permitted food establishments. In …

Healthcare Practices In The United States Aimed At Improving Care And Language Access Services For Limited English Proficiency Refugees: A Systematic Review, Bemnet Kebede

UNLV Theses, Dissertations, Professional Papers, and Capstones

Objective: The United States has accepted over 3 million refugees from all around the world since 1975. However, many Limited English Proficiency (LEP) refugees face significant barriers when seeking healthcare due to limited access, lack of knowledge, mistrust in physicians, language differences, cultural concerns, and overall complexity of the U.S. healthcare system. The purpose of this systematic review was to identify practices in the last 10 years that have improved healthcare and language access services for LEP refugees living in the U.S. Methods: A search was conducted in four electronic databases PubMed, Embase, CINAHL, and Scopus from January 2013 to …

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. …

Examining Covid-19 Vaccine Hesitancy Among The Nevada African American Population Using The Social-Ecological Model, Katelyn Faulk

UNLV Theses, Dissertations, Professional Papers, and Capstones

In Nevada, COVID-19 vaccines have been widely available to the general population since March 2021; however, even with the wide availability of these vaccines only 40% of the African American population in Nevada has been fully vaccinated against COVID-19 as of May 2023. This is problematic as it has been shown that the African American population is disproportionately affected by COVID-19 with higher rates of cases, hospitalizations, and deaths when compared to other races or ethnicities. Through the literature, it has also been well documented that African Americans may experience hesitancy toward these vaccinations for a multitude of reasons including …

Interaction Of Technetium (Iv) With Dibutyl Phosphate In N-Dodecane, Jonathan George

UNLV Theses, Dissertations, Professional Papers, and Capstones

During the reprocessing of nuclear fuel, the degradation of tributylphosphate (TBP) occurs as a result of radiolytic and thermal processes. These processes lead to the formation of minor amounts of dibutyl phosphate (HDBP). However, the presence of DBP poses a challenge in the partitioning of uranium (U), plutonium (Pu), and technetium (Tc) due to its chelating effects. The chelation of these elements by HDBP can interfere with their intended separation and purification, thereby impacting the efficiency and effectiveness of the reprocessing process. In this study, X-ray Absorption Fine Structure (XAFS) spectroscopy is employed to investigate the speciation of Tc following …

Investigating Van Der Waals Josephson Junctions With 2h-Nbse2 And 1t’-Wte2, Kristine Lorraine Haley

UNLV Theses, Dissertations, Professional Papers, and Capstones

Josephson junctions have garnered significant attention due to their unique electronic properties and applications in quantum devices. In this thesis, we investigate the fabrication processes and characterization of two-dimensional (2D) Josephson junctions consisting of layered van der Waals materials: niobium diselenide (2H-NbSe2) and few layered tungsten ditelluride (1T’-WTe2). The reduction of dimensionality can bring forth unique characteristics in certain materials that are not seen in their bulk counterparts, making them prime candidates for physical exploration. 2H-NbSe2 is an s-wave superconductor at temperatures near and below 7 K. 1T’-WTe2 is a semimetal in bulk but is an intrinsic quantum spin Hall …

Evolution And Natural Selection Of Olfactory Receptor Genes In Hawaiian Drosophila, Ngoc H. Ly

UNLV Theses, Dissertations, Professional Papers, and Capstones

The olfactory system is a powerful tool for sensing countless odorants. In Drosophila, the olfactory system is critical for detecting food, finding mates, laying eggs, avoiding predators, and adapting to new environments. Understanding the olfactory system in Drosophila will advance our knowledge of sensory biology in various insects and vertebrates, including humans. Drosophila has been a valuable model for biology since the early 1900s, and the Drosophila melanogaster olfactory system is well-studied. The Hawaiian Drosophila represent approximately 1/3 of the world’s Drosophila, however, there is limited research on Hawaiian Drosophila olfactory genes. We conducted a comparative analysis of olfactory receptor …

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 x-ray …

The Room Temperature Electrolysis Of F-Elements In Aqueous And Ionic Liquid Media: Synthesis, Dissolution, And Reduction, Phillip George Hammer

UNLV Theses, Dissertations, Professional Papers, and Capstones

Procuring F-element metals is no simple task and often requires the use of caustic and hazardous materials at high temperatures. These materials are invaluable for a variety of scientific missions ranging from the elucidation of fundamental properties, as fast spectrum nuclear fuel forms, to pit production modernizing our nuclear stockpiles. Metallic actinide materials are essential to strategic and critical materials recovery, the nuclear energy sector, and weapons production. Room temperature electrolysis is envisioned as a process to recover laboratory scale (milligram to gram) quantities of actinide metals. This process closes the uranium chemical loop allowing the reclamation of materials for …

Actinide Behavior In Soft Ligand Environments And Higher Oxidation States Of Neptunium In Aqueous Media With Solid-State Synthesis Of Np(Vii) Compounds, Kelly Floyd Seeley

UNLV Theses, Dissertations, Professional Papers, and Capstones

The fundamental properties of Uranium and Neptunium were investigated with Powder X-Ray Diffraction (PXRD) to study the behavior or 5f electrons with chalcogen, alkali metals, and alkaline earth metals. Two novel compounds were generated: NaCuUS3 and NaCuNpS3. There are several crystal structures that form in the family of AMM’Q (A = s-block, M = d¬-block, M’ = d-block or f-block, and Q = chalcogen), with oxidation states of A1+, M1+, M’4+, and Q2- ions from the family of type I compounds. Work was continued to generate the double perovskite structures in soft donor ligand environments, along with the double perovskite …

New Observations On The Age And Origin Of The Geologist Seamounts, South Hawaiian Seamount Province, Brandon Chester Scott

UNLV Theses, Dissertations, Professional Papers, and Capstones

Investigation into seamounts that stem from intraplate volcanism—that is volcanism occurring far from plate boundaries—presents an opportunity to deconvolve processes associated with mantle compositional heterogeneities and melting dynamics. Upwelling and decompression of thermochemically anomalous mantle plumes is the primary mechanism for significant intraplate volcanism; however, many seamounts dotted across the Pacific Plate do not correlate spatially, temporally, or geochemically with mantle plume volcanism. One region of enigmatic volcanism in the ocean basins that is not clearly attributable to plume-derived magmatism are the Geologist Seamounts and the wider South Hawaiian Seamount Province (∼19°N, 157°W). Here we present merged multibeam (<100 m) and satellite altimetry bathymetric maps of the Geologist Seamounts region, new 40Ar/39Ar age determinations, and major and trace element geochemistry for six remote-operated vehicle recovered igneous rock samples (NOAA-OER EX1504L3) and two dredged samples (KK840824-02) from the Geologist Seamounts. The new ages indicate volcanism was active from 89–86 Ma and 73–72 Ma, inferring that, in conjunction with previous ages of ~83 Ma, seamount emplacement initiated near the paleo Pacific-Farallon spreading ridge and volcanism continued for at least a ~17 Ma period. Geochemical analyses indicate that Geologist Seamounts lava flows are highly alkalic and represent low-degree partial mantle melts primarily formed from a mixture of melting within the garnet and spinel stability field prior to eruption. Using the new age and chemical constraints three separate formation models for the Geologist Seamounts are tested: (1) a mantle-plume derived origin, (2) a shear-driven upwelling origin, and (3) a lithospheric extension origin. The ages and morphological characteristics infer the seamounts were likely not related to the Euterpe Plume (Musician Seamounts) or a different extinct plume. Shear driven upwelling cannot account for ~17 Ma of volcanism in a limited geographic region, nor for the oblique orientation of Geologist Seamounts relative to paleo spreading direction as shear driven upwelling forms seamount chains mirroring the direction of crustal spreading. Lastly, we build upon previous models that local microblock formation and rotation corresponded with regional lithospheric extension and the formation of the Geologist Seamounts. Using available multibeam bathymetry and magnetic reversal data, we propose the microblock was bounded by the Molokai and short-lived Kana Keoki Fracture Zones. Regional deformation and corresponding volcanism among the Geologist Seamounts associated with the microblock potentially occurred in pulses contemporaneous to independently constrained changes in Pacific Plate motion vectors at ca. 85 and 75 Ma—indicating that major changes in plate vectors can generate intraplate volcanism.

On The Synthesis Of Heavy Rare Earth Solid Solutions And Their Hydrides, Joshua R. Van Cleave

UNLV Theses, Dissertations, Professional Papers, and Capstones

The theoretical predictions and results from the (La,Y)Hx ternary hydride solution provided evidence toward phase stability at comparatively lower pressures, as consequence the (Yb,Lu)Hx and (Tm,Lu)Hx ternary hydrides are studied here with pressures up to 25 GPa in the diamond anvil cell. The onset of an unknown feature in the XRD pattern coincides with crystallographic plane distortions in the tetragonal lattice of ytterbium hydride at their laser-heated interface, possibly driven by a solid solution of Lu-Yb. Findings in collected Raman spectra and X-ray diffraction patterns in an Ar environment suggest potential stability of the FCC and high-temperature HCP phases of …

Examining The Spatial Periodicity Of Force Chains And Strain Localization In Polycrystal Models, Richard D. Panduro-Allanson

UNLV Theses, Dissertations, Professional Papers, and Capstones

Shear strain localization is typical in deforming rocks and is vital for developing faults and tectonic boundaries. There are various proposed drivers of shear localization (temperature, fluid, phase transformation, and microstructure); we will explore the effects of elastic heterogeneity (a microstructural influence) on shear localization in polycrystal models. Elastic heterogeneity can lead to varied stress states in material and drive shear localization. Previous simulations of elastically heterogeneous polycrystal models have shown that the stress distribution can be described as forming an anastomosing pattern of high-stress streams parallel to the compression direction. This anastomosing patterning resembles force chains; linear, high-stress features …

Beyond Corporate Greenwashing: Discourse Of A Just Electric Energy Transition Materialized At The Thacker Pass Lithium Mine, Laekyn Kelley

UNLV Theses, Dissertations, Professional Papers, and Capstones

Thacker Pass in Northern Nevada is a rich desert ecosystem with spiritual significance to local Indigenous peoples, and it is also the site for what will be, for now, the United States’ largest open-pit lithium mine. Lithium is one mineral constituent of electric batteries which are essential to current U.S. electric energy transition policy, a transition which policymakers and other public groups have called on to be done in a way which is just. However, what exactly a just electric energy transition looks like in places like Thacker Pass is under continued negotiation in theoretical and practical senses. Existing research …

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 …

Examining The Social Equity Pillar Of Sustainability: The Effects Of Public Participation And State Actions On Local Social Services Initiatives, Jennifer Mary Crownhart

UNLV Theses, Dissertations, Professional Papers, and Capstones

Sustainability policies are vital in promoting social equity in municipalities across the United States. When examining economic development, environment protection, and social equity, the three pillars of sustainability, the third pillar of social equity is shown in research to be largely ignored. Using understanding drawn from co-production theory and the multilevel governance perspective, this study proposed to advance the literature on urban sustainability by examining the effects of public participation and state grants of local authority on municipal social equity. Affordable housing, transportation, and childcare programs are essential in promoting livability and social equity within urban communities. National survey data …

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 …

A Dynamic Scoring Methodology For Morphing Airfoil Designs With Application To A Stalling Scenario, Stone Wachs

UNLV Theses, Dissertations, Professional Papers, and Capstones

Shape Changing Airfoils (SCAs) are a developing technology with potential aircraft applications. Leading aerospace corporations are actively researching SCA capabilities. The necessity for this technology stems from the requirement of control surfaces for safe aircraft control. However, the process of testing and determining optimal SCA designs can be costly and time-consuming. While methodologies exist, they often require specific scenario examples and lack a standard approach. To address this issue, a standardized methodology is needed that can be applied to various applications and scenarios. This methodology consists of computational/experimentally produced data for airfoils, a subjective and strategic scoring equation, an algorithmic …

Improving Multi-Crane Planning On Construction Sites, Ali Khodabandelu

UNLV Theses, Dissertations, Professional Papers, and Capstones

Designing the configuration of tower cranes, managing their operations, and coordinating material logistics are intricate processes that wield significant influence over the time, cost, productivity, and safety of construction projects. This complexity stems from the multitude of layout configurations, diverse crane types, varied tasks, and material supply points, all interacting within a dynamic environment. Collisions pose a heightened risk due to overlapping crane areas, further adding complexity to the planning of crane layouts and operations. Optimizing crane layout and operational planning while ensuring safety requires establishing effective connections between tasks, cranes, and material supply locations. Traditionally, research and industry practices …

Optimized Indoor Temperature In Office Buildings Through Personalized Thermal Comfort Modeling, Raviteja Patchava

UNLV Theses, Dissertations, Professional Papers, and Capstones

Building occupants experience varying thermal comforts at static indoor set-point temperatures due to variances in preferences, needs, and activities, both within and among individuals. Despite advancement in smart building control systems, many building occupants remain dissatisfied with indoor temperatures. This study developed and created an optimization model to predict the optimized indoor temperature preferences in multiple-occupancy settings. To achieve this, personalized thermal comfort models for each occupant in a multiple occupancy space were developed. The personal comfort models serve as the foundation for predicting their individual thermal preference and developing indoor temperature optimization model. When predicting the individual thermal preference, …

Performance Comparison Of Design-Bid-Build (Dbb), Design-Build (Db) And Construction Management-At-Risk (Cmar) Methods, And Identification Of Critical Success Factors For Db And Cmar In Water And Wastewater Projects, Shrijan Shrestha

UNLV Theses, Dissertations, Professional Papers, and Capstones

The United States encounters numerous challenges within the water and wastewater sectors. The American Water Works Association mandates a capital investment of $1.3 trillion over the next 25 years for the restoration and renewal of water infrastructures throughout the United States. (AWWA). To design and construct cost-effective and time-efficient water and wastewater facilities without compromising the infrastructure quality, owners are adopting alternative approaches to project delivery like Construction Management-at-Risk (CMAR) and Design-Build (DB). These approaches introduce innovation and integration into project delivery, addressing specific limitations inherent in the traditional Design-Bid-Build (DBB) method. The rise in utilization of alternative delivery methodologies …

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. …

Investigating A Passive Treatment System For The Removal Of Nutrients From Urban Runoff, Jasminn Gray

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Environmental Protection Agency recognizes urban runoff as a major contributor of surface water pollution with nutrients as the second largest cause of surface water impairment in the United States. While a water quality standard of 100 lbs/day total phosphorus load allocation for all nonpoint sources is permitted for the Las Vegas Valley (LVV) under the National Pollutant Discharge Elimination System, currently there is not a counterpart standard for nitrogen. With the continued development of the LVV and the depletion of the quantity of water in Lake Mead due to the ongoing drought, the concentrations of phosphorus and nitrogen species …

Scalable Algorithm Design And Performance Analysis For Graph Motifs Discovery, Md Abdul Motaleb Faysal

UNLV Theses, Dissertations, Professional Papers, and Capstones

Discovering motifs or structural patterns, such as communities, is a significant graph application utilized for classifying groups in social and business networks, identifying similar proteins, detecting anomalous behavior in the cybersecurity domain, and finding critical entities in rumor propagation or infectious disease spreading. Existing state-of-the-art techniques for community discovery face challenges related to scalability, performance limitations, and methodological inaccuracies. The objective of this doctoral dissertation is to introduce novel parallel algorithms and propose high-performance computing architecture designs to address the performance constraints of current community detection approaches when processing large-scale social and biological data. This research focuses on two main …