Digital Commons Network^™

Clustering Of Internet Behaviors And Associated Mental Health Outcomes Among U.S. Adolescents, Aakansha Singh

UNLV Theses, Dissertations, Professional Papers, and Capstones

In recent years, the Internet has become an integral part of daily life, influencing education, work, and recreation. As of 2024, approximately two-thirds of the global population is online, with an estimated one-third of users under the age of 18. Given the potential long-term effects of excessive Internet use on health and well-being, adolescents represent a critical population for monitoring online behaviors. This study used baseline data from the SHARE project and conducted a latent class analysis (LCA) to identify patterns of Internet use among a sample of adolescents and the relationship of class membership with mental health outcomes, including …

Associations Of The Medicaid Expansion Policy With Racial/Ethnic Disparities In Breast Cancer Screening And Treatment, James Howard Smith Ii

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background and Aim. This dissertation examines Medicaid expansion’s effect on breast cancer (BC) screening and treatment disparities in two Medicaid-expanding states (MES) that passed Medicaid expansion (New Jersey and Vermont) relative to two non-expansion states (NES) (Georgia and Wisconsin). It then compares the association of Medicaid expansion to other states that did not undertake this policy on various subgroups, such as minorities by race and ethnicity, income, and age groups. Black women still bear significant BC disparities due to untimely screenings, treatments, and deaths. Therefore, it is critical to investigate how socioeconomic status influences racial/ethnic disparity gaps, given that BC …

An Edge Computing Device Optimized And Transfer Learning Enhanced Deep Learning Model For Detecting Wildfire Flame And Smoke, Giovanny Vazquez

UNLV Theses, Dissertations, Professional Papers, and Capstones

The integration of autonomous unmanned aerial vehicles (UAVs) with edge computing technology and deep learning (DL)-based object detection offers a groundbreaking solution for real-time wildfire detection, enabling rapid data processing directly on devices and minimizing response delays in critical scenarios. However, although showing early promise, performance is often constrained by limited training data and edge computing devices that lack graphics processing unit (GPU) acceleration. This thesis seeks to address these limitations in two stages.First, this work explores the transformative potential of Transfer Learning (TL) to enhance wildfire object detection model accuracy while also investigating TL’s impact, for DL-based object detection …

Specters Of Change: A Rhetorical And Qualitative Analysis Of Environmental Ghost Stories From Las Vegas Locals, Rachel J. Wuester

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis explores “environmental ghost stories,” a term created to represent narratives that blend emotions and memories of ecological loss to make sense of environmental change. This project utilizes a mixed-methods approach that blends narrative theory, environmental rhetoric, and qualitative interviews to examine the narratives of chronic and acute changes experienced by long-term residents of Las Vegas, Nevada. Participants (N = 15) were required to have resided in the Las Vegas valley for a minimum of twenty years in order to have had the opportunity to witness both chronic and acute changes to their environment. Using a phronetic iterative approach …

Anonymous Cyber Threat Intelligence Sharing On Blockchain, Chol Hyun Park

UNLV Theses, Dissertations, Professional Papers, and Capstones

In cybersecurity, sharing of cyber threat intelligence (CTI) plays a pivotal role in our collective defense against emerging threats. However, the current paradigm of CTI sharing is one that participants are reluctant to share due to serious concerns about privacy and the potential exposure of sensitive information.We provide a comprehensive look at the potential of blockchain technology in cybersecurity, highlighting its advantages in creating an immutable, transparent, and decentralized ledger for CTI sharing. We also explore the mechanism of decentralized identity (DID) and explain how ZKP can be used to verify the authenticity of shared data without compromising the anonymity …

Exploring The Application Of Complexity Theory And Interdisciplinary Study In Clinical Psychology, Iman Motlagh Arani

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study explores the integration of complexity theory and interdisciplinary approaches in clinical psychology education and training. Responding to growing concerns about the fragmentation of knowledge and the limitations of reductionist models in mental health education, this qualitative research investigates how faculty and graduate students conceptualize and engage with complexity, systems thinking, ethics, culture, and curricular innovation. Using semi-structured interviews with clinical psychology professors and students, the study applies thematic analysis grounded in interpretive paradigms and educational philosophy. Findings reveal widespread epistemological fragmentation, varied familiarity with complexity theory, institutional resistance to interdisciplinary integration, and emerging calls for curricular transformation. Participants …

Dry And Wet Deposition Of Atmospheric Microplastics In Las Vegas, Nevada, Laine Adame

UNLV Theses, Dissertations, Professional Papers, and Capstones

Plastics have been one of the most widely used man-made materials since their inception, and production is expected to grow by five percent every year. Plastic waste has become a growing global environmental issue. Primary MPs are plastics that are created to be intentionally tiny for their specific functional purpose. Secondary microplastics (MPs) are byproducts of plastic waste occurring due to the breakdown of larger plastics resulting in the presence and accumulation of MPs in the environment. MPs are defined as tiny particles of plastic between 5 mm and 1 μm in size. MPs have been found in the deep …

High Dynamic Range Actively Quenched Silicon-Germanium Single-Photon Avalanche Diodes, Abraham Castaneda

UNLV Theses, Dissertations, Professional Papers, and Capstones

Single-photon avalanche diodes (SPADs) are solid-state devices capable of providing large current pulses in the milliampere range in response to incident photons. The large gain inherent to SPADs makes them a popular technology for photon-counting applications, but their operation can be hindered by long recharge times, which necessitates the use of active quenching to reduce dead times and increase detection rates. For the prompt gamma/neutron radiation experiments conducted at the Nevada National Security Site, photomultiplier tubes (PMTs) have been the primary photodetector of choice, but their continued use is expected to dwindle as it becomes increasingly difficult to source quality …

Contribution Of Various Factors On The Rate Of Traffic Accidents In The Us, Martin Mnatsakanyan

Undergraduate Research Symposium Lightning Talks

Background:

Until 2020, the number of traffic accidents has been steadily decreasing. After 2020, the number started increasing until 2022, then started s lowly decreasing again. Most drivers aren’t fully aware of the reason behind all of these accidents.

Designing Ai-Driven Dining: A Ux Approach To Enhancing The Self-Service Experience, Kaylin Joung, Yuki Hayashi, Dailuaine Esguerra

Undergraduate Research Symposium Posters

Artificial intelligence has transformed many industries, yet its integration into self-dining experiences is still emerging. This research explores how AI can enhance self-dining by introducing technology like interactive kiosks and robot servers to improve efficiency, personalization, and customer convenience. By addressing current gaps, we aim to create a more seamless and engaging dining experience.

Marine Heat Waves Effects On Rocky Intertidal Ecosystem Functioning, Skyler Peterson, S. Schneider, C.L. Webb, A. Leighton

Undergraduate Research Symposium Posters

Severe heat waves may cause long-term changes in marine ecosystems and are expected to increase in magnitude and frequency. Here we use surveys from six localities across a six-year interval (2013-2019) to investigate the effects of heat waves on the functional diversity of rocky intertidal ecosystems (Vancouver Island, Canada).

Functional diversity, the number and types of functions performed by organisms, influences ecosystem stability and health. To assess changes in functional diversity we used analyses of biological traits. Biological traits are measurable properties of organisms that describe their morphology, physiology, and behavior. We quantitatively assessed changes in functional diversity in response …

The Demise Of Fossil Cycad National Monument As A Consequence Of Paleontological Resource Mismanagement, Nathaniel Valentine, Vincent Santucci, Justin Tweet, Aubrey Bond

Undergraduate Research Symposium Posters

Located in the Black Hills of South Dakota (Figure 1), Fossil Cycad National Monument boasted well-preserved specimens of cycadeoid fossils from the Cretaceous and concentrations of these fossil plants were greatest at the site’s location (Santucci and Hughes, 1998). I studied historical records to estimate the number of fossils removed by paleontologists at the site between 1890-1957.

Assessing The Professional Development Needs Of Traditionally And Alternatively Certified Career And Technical Education Teachers In Virginia, Natalie Ferand, Bradley Bowen, D. Brett Milliken

Journal of Research in Technical Careers

The Virginia Department of Education allows for various paths to teacher licensure. Teachers may graduate from an approved teacher preparation program or obtain a teaching license through alternative pathways. This study identified the professional development needs of traditionally and alternatively certified CTE teachers in Virginia by administering a statewide survey. The participants were divided into three groups: alternatively certified CTE teachers (Group 1), traditionally certified teachers in a non-CTE area and then received a CTE endorsement (Group 2), and traditionally certified teachers in CTE (Group 3). By comparing how teachers from each of these certification pathways reported their level of …

How Do Parents Influence Female Students' Engineering Trajectory?, Niloufar Bayati, Cameron Denson

Journal of Research in Technical Careers

Using the Parental Socialization Framework, this research provides a detailed analysis of how early STEM exposure, parental confidence in abilities, and gender-neutral upbringing contribute to the development of STEM identities among women. Employing a hermeneutic phenomenological approach, six undergraduate women engineering majors were interviewed in-depth about their parents' influence on their STEM pathways. The findings reveal that parents' high academic expectations, confidence in their daughters' abilities, verbal and non-verbal encouragement, and early STEM opportunities are pivotal in steering female participants toward engineering. The study also underscores the importance of creating a gender-neutral environment that allows girls to explore and develop …

School-Based Agricultural Educators’ Educational Technology Integration Self-Efficacy And Technological Pedagogical Content Knowledge: A Relational Study, Macey Kleinjan, Brooke L. Thiel, Adam Marx

Journal of Research in Technical Careers

The purpose of this study was to assess the relationship between school-based agricultural education (SBAE) teacher Technological Content Knowledge, Pedagogical Content Knowledge, and Technological Pedagogical Knowledge and teachers’ technology integration self-efficacy through the use of TPACK and the Intrapersonal Technology Integration Scale (ITIS). In-service SBAE teachers from four upper-Midwest states were surveyed to assess their current self-efficacy related to the integration and utilization of the educational technology available in their classroom and curriculum. According to the findings of this study, SBAE teachers are using educational technology in their classrooms and curriculum daily but are only slightly confident in their ability …

Real-World Applications: Strategies To Inspire Students To Learn Calculus And Differential Equations Through Modeling, Aleksei Talonov

UNLV Best Teaching Practices Expo

Key elements of strategy to inspire students include:

• Pre-Class Preparation;
• Historical Context (Starting each lecture with a brief historical overview to provide relevance and context to the material);
• Interactive Real-Life Problem Solving (Discussing the main concepts of the lecture and collaboratively solving challenging problems);
• Proof Techniques (Demonstrating mathematical methods used to prove key statements from the current lesson);
• Real-Time Feedback.

Reframing Information Seeking In The Age Of Generative Ai: A Critical And Humanistic Approach, Joseph Kevin Sebastian

Library Faculty Research

Information-seeking has long been the subject of theoretical modeling, often drawing from cognitive, behavioral, computational, and even evolutionary perspectives to explain how individuals navigate, filter, and utilize information. Several dominant frameworks—Carol Kuhlthau’s Information Search Process, Marcia Bates’ Berrypicking Model, Peter Pirolli & Stuart Card’s Information Foraging Theory, Kiyohiko Nakamura’s Information Criteria framework, and Ian Ruthven’s Information Shaping Theory —have provided structured ways of understanding how people interact with information environments. However, while these frameworks offer valuable insights, they often operate within mechanistic or efficiency-driven paradigms, which risk overlooking the complex, embodied, and socioculturally situated nature of human information behaviors. These …

A Review Of The National Partnership For Student Success (Npss) Voluntary Quality Standards: A Resource For Community-Based Organizations In Southern Nevada, Benita R. Brooks, Omolola A. Odejemi,, Carolina Clavel, Amy Wolfe

National Institute for the Advancement of Education (NIAE)

This literature review examined how three nonprofits—Saga Education (high-impact tutoring), MENTOR (high-quality mentoring), and Communities In Schools (wraparound/integrated student supports)—aligned their programs with the National Partnership for Student Success (NPSS) Voluntary Quality Standards. By leveraging empirical research and data analysis, these organizations have developed evidence-based practices that improve academic outcomes, enhance student well-being, and create more supportive learning environments. The review evaluated the impact of each program on student outcomes, offering insights into how research-driven approaches in tutoring, mentoring, and wraparound student support contribute to student success. The NPSS initiative and its Voluntary Quality Standards provide a comprehensive framework for …

Slot Floor Layout Strategy: Optimizing Revenues Vis-À-Vis Game Location And Popularity, Anthony F. Lucas, Jungsun (Sunny) Kim

UNLV Gaming Research & Review Journal

Slot revenues are critical to the success of many of the world’s casinos. The rising cost of slot machines has often resulted in fewer games on the floor and fewer purchases of new games. Such conditions create choices for operators seeking to optimize slot revenues with their existing game mix, which invariably includes both high- and low-performing titles. Like game titles, the quality of all bank locations on the slot floor is not the same. Thus, operators must decide whether it is better to place the popular titles in the best locations and the less popular titles in the challenging …

Artificial Intelligence And Communication Technologies In Academia: Faculty Perceptions And The Adoption Of Generative Ai, Aya Shata, Kendall Hartley

Hank Greenspun School of Journalism and Media Studies Faculty Research

Artificial intelligence (AI) is ushering in an era of potential transformation in various fields, especially in educational communication technologies, with tools like ChatGPT and other generative AI (GenAI) applications. This rapid proliferation and adoption of GenAI tools have sparked significant interest and concern among college professors, who are dealing with evolving dynamics in digital communication within the class-room. Yet, the effect and implications of GenAI in education remain understudied. Therefore, this study employs the Technology Acceptance Model (TAM) and the Social Cognitive Theory (SCT) as theoretical frameworks to explore higher education faculty’s perceptions, attitudes, usage, and motivations, as the underlying …

Relational Database Schema To Support Research Profiling Studies, Natural Language Processing, And Bibliometric Analysis, Darnelle Melvin

Library Faculty Research

In this paper, a relational database schema is introduced that supports rapid prototyping, data preprocessing, and warehousing tasks associated with research profiling studies, natural language processing, and bibliometric analysis. Python scripts are leveraged for the seamless retrieval and processing of data from Semantic Scholar. This schema is tailored to efficiently analyze entities such as authors, their scientific papers, referenced papers, and cited papers. Adhering to the relational model, this schema offers a standardized approach to data storage and detailed information retrieval for scientific papers. Enhancing knowledge discovery in scientific databases, this schema provides researchers with a powerful platform for robust …

Climate And Gypsum Parent Material Shape Biocrust Communities And Moss Ecology In The Chihuahuan And Mojave Deserts, Nicole Pietrasiak, Katelyn G. Gobbie, Brian Jusko, Rebecca E. Drenovsky

Life Sciences Faculty Research

Biological soil crust communities (biocrusts) establishing on gypsum soils have been well-documented for their prolific appearance and rich diversity of lichens and bryophytes. However, studies characterizing gypsum biocrusts have occurred primarily outside of the U.S., most of which lack comparisons to other soil types. We conducted intensive field surveys to evaluate the ground cover and frequency of biocrust functional groups and moss species on gypsum and non-gypsum soils in the U.S. regions with the most extensive gypsum outcrops, the northern Chihuahuan and eastern Mojave Deserts. Study sites were stratified by geomorphology and paired, so that every gypsum site was matched …

The Role Of Full-Time Job Postings For Postsecondary Cte Faculty In Curriculum Design: A Document Analysis, James Bartlett Ii, Michelle Bartlett

Journal of Research in Technical Careers

This study examines job postings for full-time postsecondary Career Technical Education (CTE) faculty to explore job duties. Document analysis was used on the job postings collected on JobsEQ Real-Time Intelligence for CTE instructors in North Carolina. Over a year, 318 job postings were found through specific search terms in JobsEQ, with 205 retained. Discarded postings were due to duplication, not postsecondary CTE, or part-time positions. Examination of job postings revealed six thematic areas that tie to curricular skills: development process, inputs and standards, content of the CTE curriculum for students, uses of curriculum in the CTE instructor’s role, goals, and …

Employing The Next Generation: Defining The Need For Employability Skills Integration Through The Lens Of School District Superintendents, William Norris, Shannon L. Norris-Parish

Journal of Research in Technical Careers

Since its inception, agricultural education has been instrumental in equipping secondary graduates with the necessary skills to be successful in their future career endeavors. While this has remained a priority over time, many employers claim that secondary graduates do not possess the necessary skills to be successful in the workforce. This study sought to assess the perceptions of school-district superintendents on the importance of integrating employability skills into agricultural education courses and evaluate differences in the perceptions of male and female superintendents. We used a descriptive research design to collect the data. The instrument assessed 41 individual skills in nine …

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

UNLV Theses, Dissertations, Professional Papers, and Capstones

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

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

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

UNLV Theses, Dissertations, Professional Papers, and Capstones

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

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

UNLV Theses, Dissertations, Professional Papers, and Capstones

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

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

UNLV Theses, Dissertations, Professional Papers, and Capstones

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

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

UNLV Theses, Dissertations, Professional Papers, and Capstones

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

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

UNLV Theses, Dissertations, Professional Papers, and Capstones

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