Digital Commons Network^™

Bridging The Gap Between Vocal Performance Degrees And Opera Apprentice Programs: A Comparative Study Of Pedagogical Methods, Emily Marie Dirks

UNLV Theses, Dissertations, Professional Papers, and Capstones

While operatic apprentice programs seek singers with strong vocal potential, they rarely define the specific technical skills necessary for success. This study bridges the gap between vocal performance degrees and the opera industry by identifying the vocal techniques that may improve a singer’s likelihood of acceptance into an apprentice program. To achieve this, the research draws from two primary sources: pedagogical texts and interviews with industry experts who actively teach, coach, or perform alongside apprentice artists at elite opera houses. These experts include voice teachers Darrell Babidge and Jack LiVigni, vocal coaches Beatrice Benzi and John Parr, and internationally acclaimed …

Advanced Literacies In The 21st Century: Examining A Narrative-Based Video Game As A Stealth Assessment For Comprehension, Joseph Paul Fiorentini

UNLV Theses, Dissertations, Professional Papers, and Capstones

In our technology-rich 21st Century, the need for valid, reliable, and fair literacy assessments remains pertinent to the field of education. This study defines literacy as advanced literacy where comprehension is considered a holistic product of applying acquired knowledge, skills, or abilities (KSA) to contextualized situations. Conventional assessment methods have traditionally parceled out the construct into its component parts (i.e., vocabulary, phonics, fluency, etc.) as a means of understanding the meaning making process from a traditional literacy perspective. Stealth assessments utilize the Evidence-Centered Design (ECD) framework as a robust method for assessing complex constructs holistically within technology rich environments. Adapting …

Mfgat: Map-Free Trajectory Prediction With Graph Attention Networks For Autonomous Vehicles, Zehra Gunindi

UNLV Theses, Dissertations, Professional Papers, and Capstones

Accurate trajectory prediction is a key component for ensuring safe and efficient navigation of autonomous vehicles in complex traffic scenarios. While traditional methods rely heavily on high-definition (HD) maps, these approaches face significant challenges, including high costs, limited availability, and susceptibility to rapid obsolescence. This thesis proposes an end-to-end, map-free trajectory prediction model that leverages Graph Attention Networks (GAT) to dynamically capture spatial-temporal interactions among road agents, eliminating the need for HD maps.The research introduces UNLVTraj, a novel LiDAR-based dataset collected around the University of Nevada, Las Vegas campus, specifically along Cottage Grove Street, Harmon Avenue, and Maryland Parkway. This …

Identifying Alternatively Spliced Events And Exons Between Blood Cell Types, Jessica Holder

UNLV Theses, Dissertations, Professional Papers, and Capstones

Transcript isoforms arising from alternative splicing events can contribute to the development of a cell’s identity and function and overall protein diversity. Peripheral blood is a useful model to study and evaluate computational methods for alternative splicing detection due to its abundant data across various sequencing protocols. The alternative splicing events across different blood cell types have not been completely identified and detecting alternative splicing through short read sequencing is still a challenging problem. Here, we propose to integrate multiple bulk RNA-seq datasets of purified blood cells using a novel integration method to identify the cell-type specific alternative splicing events …

Performance Optimization-Focused Family Behavior Therapy To Address Verbal And Physical Aggression In An Adolescent Diagnosed With Bipolar I Disorder: A Case Report, Sierra Ann Ramirez Jarvis

UNLV Theses, Dissertations, Professional Papers, and Capstones

Bipolar disorder is a chronic and debilitating condition characterized by fluctuations in mood that significantly interfere with day-to-day functioning. While symptom onset typically occurs in early adulthood, manifestations can occur at an earlier developmental stage. Early intervention has been shown to be effective in decreasing long-term negative outcomes and decreasing symptom severity in serious mental illness (SMI) populations, and as such, early intervention treatment programs may have particular benefits for individuals who are early in the course of bipolar disorder. However, there is little information regarding the effectiveness of these programs. This thesis reports a case of an adolescent client, …

The Effectiveness Of Occupational Therapy Objective Structured Clinical Exam & Student Self-Efficacy In Preparation For Fieldwork Rotation, Angela Kay

UNLV Theses, Dissertations, Professional Papers, and Capstones

This capstone project focuses on exploring the effectiveness of the University of Nevada, Las Vegas Department of Occupational Therapy’s Objective Structured Clinical Exam (OSCE) on students’ perceived self-efficacy in preparation for and throughout fieldwork rotation. This retrospective study analyzed repeated measures of the New General Self-Efficacy (NGSE) Likert Scale collected from a sample of 49 occupational therapy students across five time points. Findings indicated a statistically significant increase in self-efficacy over time (p< .001). These results suggest that the OSCE may play a meaningful role in enhancing students’ self-efficacy in their clinical hands-on skills, supporting its continued use in occupational therapy academics.

Undergraduate Student Experiences Of Flow In Culturally Relevant And Contextual Digital Math Games, Kaylie Kurland

UNLV Theses, Dissertations, Professional Papers, and Capstones

Students in co-requisite mathematics classes represent a diverse group of learners, with one thing in common: their previous math performance. This research investigates how playing culturally responsive educational games is associated with students' learning and experience of flow. Quantitative analyses revealed no significant differences in flow scores across demographic groups. However, students with stronger STEM identities reported experiencing higher levels of flow, on average. Math self-efficacy was not significantly associated with flow experiences. ANOVA results indicated that flow was not significantly related to final course grades (F = 0.465, p = 0.707, η² = 0.008), suggesting that students’ self-reported flow …

Cross-Correlation Studies Of The Cosmological 21 Cm Signal And High-Redshift Galaxy Distributions, Simon Matin

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Epoch of Reionization (EoR) marks a critical phase in cosmic history, during which time the first stars and galaxies ionized the surrounding neutral hydrogen gas. A powerful way to probe this period is by cross-correlating the 21 cm signal from neutral hydrogen with high-redshift galaxy distributions. In this study, we analyze the 21 cm-galaxy cross-power spectrum using simulated sky maps and explore its redshift evolution, revealing a transition from positive correlation at early times (high redshift) to anti-correlation at later stages of reionization (low redshift). Our results highlight the sensitivity of the cross-power spectrum to the evolving ionized structure …

El, A Navigational Assistant Based Upon Echolocation, Arthur Mazer

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis investigates the integration of a parametric speaker with a microphone array to enhance the echolocation of objects. A parametric speaker focuses ultrasonic and audible waves in a specified direction. This endows the parametric speaker with the capacity to focus waves across a wide frequency spectrum enabling adaptation of the frequency to environmental considerations.Beam forming allows one to focus a microphone array in a specified direction. The thesis investigates different microphone array configurations for the purpose of enhancing the echolocation ability of an echolocation device. The primary goal of the thesis is the construction and testing of an echolocation …

The Impact Of Psychosocial Factors On Occupational Therapy Doctoral Students’ Communication With Fieldwork Educators: A Retrospective Analysis, Melissa Montes

UNLV Theses, Dissertations, Professional Papers, and Capstones

This capstone project investigates the impact of adverse psychosocial factors, such as depression, anxiety, and stress, on effective communication of occupational therapy doctoral (OTD) students with their fieldwork educators (FWEds) during level II fieldwork experiences at the University of Nevada, Las Vegas (UNLV). Using a convergent parallel mixed methods design and retrospective analysis, the study integrates quantitative data from the Depression, Anxiety, and Stress Scale (DASS-21) and qualitative data from the Fieldwork Experience Assessment Tool (FEAT) to explore how these factors affect communication and the management of the adverse psychosocial factors OTD students experience. This study involved 36 OTD students …

Analysis Of Incident Duration And Real-Time Incident Delay Estimation Using Big Data Analytics And Machine Learning Techniques, Zhubin Najafi

UNLV Theses, Dissertations, Professional Papers, and Capstones

Traffic incidents have a significant impact on freeway operations, leading to severe delays, congestion, fuel wastage, and economic losses for commuters. Each year, billions of gallons of fuel are wasted, and drivers incur thousands of dollars in lost time due to incident-related delays. To mitigate these effects, Traffic Management Centers (TMCs) implement incident management strategies aimed at reducing both the frequency and severity of incidents while ensuring their prompt and safe clearance.

Dynamic Message Signs (DMSs) are key tools used by TMCs to communicate travel times and incident information to commuters. Under normal conditions, default travel times are displayed on …

Gaming Participation: An Occupational Therapy Approach To Esports Ergonomics, Althea Rivera-Millare

UNLV Theses, Dissertations, Professional Papers, and Capstones

Competitive e-sport gamers are increasingly at risk for repetitive strain injuries (RSIs) due to the prolonged and repetitive nature of their gaming demands. Current healthcare protocols often overlook the unique ergonomic needs of this population, potentially leading to decreased occupational performance and dysfunction. This study aims to develop and evaluate an evidence-based ergonomic protocol tailored specifically to e-sport gamers who primarily use a mouse and keyboard, with the goal of reducing the risk of musculoskeletal injuries and enhancing gaming performance. Grounded in the principles of occupational therapy, the study emphasizes occupation-based interventions that address the specific occupational demands of e-sport …

Qualitative Analysis Of The Influence Of Military Culture On The Resocialization Of Combat Veterans, Kyle N. Rodgers

UNLV Theses, Dissertations, Professional Papers, and Capstones

The researcher conducted in-depth interviews with 25 combat-experienced Veterans of the Global War on Terror who fit an operational definition of successful resocialization. How do successfully resocialized combat Veterans compare with combat Veterans who became involved with the criminal justice system? Utilizing a snowball method to identify each participant, the most significant finding from these interviews was that two factors seem to differentiate the civilian and military group styles the most, which were the overwhelming importance of purpose and tribe in the lives of combat Veterans. This confirmed the hypothesis that the most significant difference between the civilian and military …

On The Special Cases Of Carmichael’S Totient Conjecture, Christopher Saito

UNLV Theses, Dissertations, Professional Papers, and Capstones

Euler’s totient function, φ(n), is the arithmetic function defined as the number of positive integers less than or equal to n that are relatively prime to n. In his 1922 paper [3], Professor R. D. Carmichael conjectured that for each positive integer n, there exists at least one positive integer m̸ = n such that φ(m) = φ(n).In this thesis, we consider some relevant literature and explore Carmichael’s totient conjecture for particular values of φ(n) = k. Our main consideration will be the set X_k = {n ∈ N : φ(n) = k}. In identifying X_k for k = 2^t, …

Qualitative Analysis Of Clinical And Community Perinatal Providers’ Perceived Barriers To Equitable Care For Food Insecurity In Underserved Communities In Southern Nevada, Kaelia Lynn KeapomekuʻUaloha Saniatan

UNLV Theses, Dissertations, Professional Papers, and Capstones

Food insecurity is prevalent among underserved communities and contributes to increasing maternal-child health disparities. The perinatal period from pregnancy through one year postpartum provides a critical window of opportunity to identify and address food insecurity (FI). However, barriers such as inadequate staffing, lack of institutional and community resources have prevented perinatal providers from offering equitable care for FI, defined as providing screening, referrals, and follow-up services. The Social Ecological Model (SEM) is a framework that observes concepts at multiple levels, including (i) individual, (ii) interpersonal, (iii) institutional, (iv) community, and (v) policy. The objective of this study is to understand …

Elevating Education: Leveling Up Individual Learning Plans, Maximum Mgrdich-Ararat Sirabian

UNLV Theses, Dissertations, Professional Papers, and Capstones

This three-article dissertation investigated the effectiveness, implementation quality, and automation of Individual Learning Plans (ILPs) in promoting college and career readiness. Article 1 analyzed High School Longitudinal Study of 2009 data and found that ILPs did not significantly guide course alignment. Article 2 examined ILP implementation across Nevada high schools, revealing inconsistent quality, limited standardization, and few culturally responsive practices. These findings informed the creation of a new high-quality ILP framework. Article 3 employed a convergent parallel mixed methods design to assess an automated ILP prototype based on this framework. Participants in the automated group reported significantly higher scores in …

On Efficient Position Dependent Computation Of Radiation Near Accretion Disks, Kara Jeanette Smith

UNLV Theses, Dissertations, Professional Papers, and Capstones

Accretion onto super massive black holes (SMBH) plays a vital role in explaining our observations of active galactic nuclei (AGN). One key aspect of observations of AGN is the prevalence of massive outflows which transport matter and energy away from the galactic core. These outflows are characterized by highly blueshifted absorption lines as radiation from the accretion disk is absorbed by gas which is moving toward us. Radiation pressure on spectral lines is expected to play a vital role in launching and accelerating these winds. At the other end of the spectrum of black hole masses, accretion disks in X-ray …

Torque Efficacy Of Cadmus Bracket Design Using Clear Aligners, Joseph Soderberg

UNLV Theses, Dissertations, Professional Papers, and Capstones

Introduction: Clear aligner therapy (CAT) is an alternative option for clinicians to use for orthodontic treatment as opposed to fixed appliances. Many patients prefer clear aligner therapy due to its esthetic looks, removability, ease of oral hygiene, and comfort. Clear aligner companies boast to clinicians that it can be used more efficiently and effectively than fixed appliances in many orthodontic cases. Although these claims have been made, there is a lack of evidence to prove that clear aligner therapy is more efficient or effective. This research will focus on torque control. This project is designed around a new, pre-manufactured attachment …

Balanced Artistry: Integrating The Methods Of Michael Chekhov And Body Mapping For The Versatile Singing Actor, Olivia Yokers

UNLV Theses, Dissertations, Professional Papers, and Capstones

This document explores the integration of movement-based techniques in vocal performance training by focusing on integrating Michael Chekhov’s acting method and Body Mapping. It examines how these methodologies enhance expressive freedom, technical efficiency, and injury prevention in singers. By providing a framework for performers to embody characters with greater authenticity, this document contextualizes exercises from both Body Mapping and Chekhov’s technique through an interdisciplinary approach that enhances student achievement of technical vocal and acting proficiency. Synthesizing principles from Body Mapping, such as inclusive awareness and the dynamic points of balance, with key elements of Michael Chekhov’s acting technique, including crossing …

Genome-Wide Association Of Gene Regions Controlling Selenium And Magnesium Accumulation In Walnuts (Juglans Regia L.), İrem Büyükalgan, Bülent Yağmur, Erdal Orman, Muhammed Bahatti̇n Tanyolaç, Duygu Ateş

Turkish Journal of Botany

Walnut (Juglans regia L.) is one of the most economically important species. It is of great importance to the food industry due to its nutritional value, and high content of many beneficial components such as macro and microelements. In the current study, the aim was to determine markers of single nucleotide polymorphism (SNP) associated with the gene(s) controlling the accumulation of Selenium (Se) and Magnesium (Mg) in walnuts. Se and Mg concentrations were measured in 154 genotypes of Juglans regia in 2021 and 2022. A total of 16,473 SNP markers were used for association mapping to analyze the marker-trait associations. …

Two-Way Random Effects Model With Serial Correlation, Badi H. Baltagi, Georges Bresson, Jean-Michel Etienne

Center for Policy Research

This paper derives a feasible GLS estimator for a two-way error component model with serial correlation on both the time effects as well as the remainder disturbances. This estimator is based on two methods, one proposed by De Porres and Krishnakumar (2013) for deriving the spectral decomposition of a general error component structure and the other based on an inversion trick for the variance-covariance matrix of this model suggested by Skoglund and Karlsson (2001). While the last paper used maximum likelihood methods under the normality assumption, we use method of moments estimators following Baltagi and Li (1991) for the one-way …

The Riddle Of Rescissions: Ascent And Decline Throughout The Last Half-Century, Blake Bacas

Washington Semester Program

No abstract provided.

Independent- May 15, 2025, Leslie Lozada

The Independent (1988-present)

No abstract provided.

2025.05.15 - Audit And Finance, Buildings And Grounds Committees Meeting Minutes, Northeastern Illinois University Board Of Trustees

Board of Trustees - 2025

Meeting materials for the NEIU Audit Committee and Finance, Buildings and Grounds Committee

Balance, Liberty, And Law: Montesquieu’S Legacy In U.S. Constitutional Thought, Christian Yockey

History Student Research

In 1787, a Constitutional Convention was convened to revise the weak Articles of Confederation. However, the delegates at this convention ended up creating an entirely new system of government—that is one with a much more powerful structure of federal power. This paper examines the influence of the French philosopher Baron de Montesquieu on this process and the creation of early U.S. political culture. While previous academic scholarship has acknowledged Montesquieu’s influence on this process of writing the Constitution, this paper seeks to explore further the specific ways his influence shows itself in the U.S. Constitution and the creation of U.S. …

Bell Telephone System’S Preeminent Role In The Growth Of Industrial Design, Ralph O. Meyer, Russell A. Flinchum

Purdue University Press Books

Histories of design pay scant attention to the corded telephone, which played an immeasurable role in early communication. Although the Bell System, with many Nobel Prizes, is justly acknowledged for its technical prowess, it should also be recognized for its early and considerable impact on the developing discipline of industrial design. In 1930, young Henry Dreyfuss, who would later become known as a pioneer of industrial design, was retained by the Bell System as a design consultant and matured in that environment. With substantial input from Bell System engineers, Dreyfuss and his staff produced attractive telephone designs that were manufactured …

Assessment Of Vegetation Dynamics After South Sugar Loaf And Snowstorm Wildfires Using Remote Sensing Spectral Indices, Ibtihaj Ahmad

UNLV Theses, Dissertations, Professional Papers, and Capstones

Wildfires are increasingly common in sagebrush ecosystems across the western United States, leading to vegetation loss and ecosystem restructuring. This study investigated vegetation recovery within two large Nevada burn scars, the Snowstorm Fire of 2017 and the South Sugar Loaf Fire of 2018. Landsat 8 surface reflectance imagery supplied multi temporal spectral data, and vegetation burn severity was mapped with the difference Normalized Burn Ratio. The research aimed to quantify how vegetation health spectral indicators respond over time across severity gradients and to detect shifts in land cover composition from pre fire to post fire conditions.Four spectral indices—NDVI, MSI, MCARI2, …

Gender Biases: The Interaction Between Children And Voice Assistants, Trà Hương Bùi

UNLV Theses, Dissertations, Professional Papers, and Capstones

Nowadays, children can access and interact with voice assistants (VAs) easily since the machines are more available in the family context. However, there is a gap in understanding how children conceptualize VAs when interacting with the machine. Specifically, this study aimed to examine whether children understand VAs as inanimate. Additionally, the study also compared how children and adults rate the VAs’ level of warmth and competence and the way they associate AI voices with feminine or masculine faces. Another goal was to explore how children and adults match the gender and competence/warmth of the VA with facial masculinity and femininity. …

Developments On Abbreviations Towards Machine Reading Comprehension, Sing Choi

UNLV Theses, Dissertations, Professional Papers, and Capstones

Machine reading comprehension is a critical step in development of applications that require the semantic understanding of human speech-to-text driven work. Many devices such as smart home appliances like the Amazon Echo Dot, Google Home, or smart assistants like Apple Siri or Microsoft Cortana are examples of these applications. The comprehension task involves a deeper understanding and recognition of named entities such as person names, locations, medicals codes, quantities, abbreviations, and acronyms in speech or text data. In this dissertation, we explore and extend the different approaches and techniques in modern research that tackles the problem of recognition and definition …

Advancements In Solar Energy Life Cycle Assessment And Implications For Power Plants In The Western Us, Santiago Cisneros Castillo

UNLV Theses, Dissertations, Professional Papers, and Capstones

New solar energy technologies, such as second-generation photovoltaic panels, are increasingly being installed at utility scale. Our accounting of the life cycle climate change impacts or carbon footprint of solar power technologies needs to be revised as technologies change and as prior omissions of related impacts are identified. This thesis aims to update the life cycle climate change impacts of two solar energy technologies. First, the direct land use change (DLUC) and albedo change impacts from removing native vegetation and installing CSP troughs were incorporated into life cycle assessment (LCA) scenarios for the four currently operational CSP trough power plants …