Digital Commons Network^™

The Role Of Interference In Short-Term Forgetting, Monserrat Leal-Arcos, Gabriel Hull, Francisco Sanchez, Rhiannon N. Soriano Smith, William B. Ridgway

Undergraduate Research Symposium Posters

Two explanations have been proposed to explain forgetting: decay (forgetting occurs as a function of time) and interference (mental activity can impinge on the consolidation of a recently acquired memory). Wickelgren (1974) proposed a model of forgetting which suggests that forgetting is a function of both decay and interference, best expressed as a power-exponential function. The present research will be the first to directly examine whether Wickelgren's model accurately predicts the observed effects of these two components on forgetting. This research will further the study of human memory by improving current models, and helping to resolve the debate surrounding decay …

A Study Of Improvement In The User Experience Of Unlv's Campus Safety Mobile Application, Mayra Carrera, Mustafa Diallo, Cecilia Garcia-Leon, Khristine Le, Kristine Monsada

Undergraduate Research Symposium Posters

In 2019, the National Center for Education Statistics (NCES), reported an average of 28,000 crimes on college campuses across the United States. The University of Nevada, Las Vegas (UNLV) has taken measures to address campus safety through their app, RebelSAFE. However, there is little research showing how effective such apps are in aiding students through emergencies. This study aims to evaluate the usability of RebelSAFE through usability testing and surveys.

Is There An App For That? Social Support, Depression, And Anxiety Among Users Of A Digital Mental Health App, Bryce V. Brown, Teresa J. Walker, Christine Guardian, Matthew Schurr

Undergraduate Research Symposium Posters

Perceived social support has been associated with mental health. Social distancing guidelines due to COVID-19 heavily shifted social engagement to digital formats. It is important to understand the role of digital mental health interventions in mental health outcomes.

Who Is Gonna See The Shrink? Anxiety And Depression's Relationship To Openness And Willingness To Engage In Weekly Psychotherapy, Bryce V. Brown, Teresa J. Walker, Christine Guardian, Matthew Schurr

Undergraduate Research Symposium Posters

Digital mental health interventions may offer an alternative to in-person psychotherapy. It is important to understand attitudes about traditional in-person psychotherapy among app users to contextualize treatment seeking and better understand treatment options.

An Illustrated Metamorphoses, Alexandria Devlin

Undergraduate Research Symposium Posters

This project was a comic consisting of five different myths from Ovid's Metamorphoses. My goal was to make it easier and more enjoyable for audiences to read classical myths, and give these stories a way to shine in the 21st century. Myths from many different cultures have been adapted into comics, but direct depictions are much less common than shaping mythological figures to fit a new story. I have yet to find a direct comic adaptation of Metamorphoses. Ovid's Metamorphoses is full of rich and interesting stories and deserves to be represented alongside other mythological tales.

Exporting U.S. Cosmetics To China's Lower-Tier Cities, Kaitlynn Quach, Audrey Stephanie

Undergraduate Research Symposium Posters

What is the cosmetics market like in China's lower-tier cities for U.S. brands? In order to create market entry strategies, China has city-tier classifications that are commonly used in business. Classifications are based on GDP, political administration, and population. In 2020, Chinese consumers spent more than ¥340.0 Billion RMB ($53.46 Billion) on cosmetic products. This number increases from year to year and is especially affected by globalization. The United States is one of the top exporters of cosmetics brands.

Although popular, United States cosmetics brands face strong competition in China's first-tier cities. First-tier cities are considered the largest and wealthiest …

Synthesis Of Modified Walnut Shell Biochar And Material Characterization In Ground Water Treatment, Maaike Parajes, Suraj Pochampally

Undergraduate Research Symposium Posters

Biochar (BC) is a carbon-rich material synthesized from the pyrolysis of biomasses and developed to remove soil and wastewater contaminants. The pyrolysis process involves thermally decomposing the organic materials in the absence of oxygen. Biochar has the potential to be an eco-friendly and effective adsorbent for heavy metals and toxic organic compounds. An adsorbent is a material that attracts other substances on its surface, chemically and physically. Walnut shells were chosen for the biochar modification to improve the surface morphology, pore structure, and adsorption capability.

Biochar Hydrophilicity Characterization By A Smartphone-Based Apparatus: Design, Construction, And Measurement Calibration, Emma Letourneau, Suraj Pochampally

Undergraduate Research Symposium Posters

Water contact angles are used to determine hydrophilicity, which is a material's attraction to water. A water contact angle of greater than 90 degrees indicates a hydrophobic material that repels water, whereas a contact angle of less than 90 degrees indicates a hydrophilic material [Fig. 1]. Water contact angles are measured through a goniometer, which can cost between $2000 to $10,000.

Biochar is a porous carbon material created from biological waste products, that is pyrolyzed (i.e. burned) in a low-oxygen, high heat environment. Biochar can be used to remove contaminants from water and remediate soil while reusing waste, making it …

Expanding The Library Of Planet Building Materials In Magrathea, Rosalie Chaleunsouck, Tristan Benally

Undergraduate Research Symposium Posters

Exoplanets are often modeled with fully-differentiated layers of iron, silicates, water, and gas. The large pressure and temperature ranges within each layer results in changes of phase and mineral equilibrium. MAGRATHEA is an open-course planet interior structure code with a large library of equations of state for planet building materials. This allows for the user to build detailed planet models and test differing measurements of the equation of state. We extend MAGRATHEA's library to include upper-mantle materials and various phases of iron cores. We show the impact of these materials on the characterization of rocky planet interiors.

Microbial Life In Deep-Subsurface Environments: The Role Of High Pressure In Biogeochemical Cycles, Cheyenne Brokaw

Undergraduate Research Symposium Posters

Ocean World: An ocean world is considered any planet or moon currently with a liquid ocean. While the deepest part of the Ocean (Mariana Trench, 11,000 mbsl, 110 Mpa) and the lithosphere host microbial life, it begs the question, How?

Misophonia Sensitivity Is Related To Enhanced Responsiveness To Misophonia, Asmr And Musical Frisson, Alexis Rice, Kiara O'Keefe, Kacey Chang, Sivan Barashy, Solena Mednicoff, Destiny Gonzales

Undergraduate Research Symposium Posters

Misophonia: a condition in which specific everyday sounds (e.g., chewing, breathing) trigger an atypical, negative emotional response.

ASMR: a sensory phenomenon triggered by stimuli that induce a state of relaxation, positive feelings, and tinging sensations that spread from the head to the rest of the body.

Musical frisson: typically characterized by positive affect and strong physiological reactions, such as shivering, goosebumps, and teary-eyes in response to highly pleasurable music.

Peripheral Blood Cell Counts As Potential Biomarkers For Alzheimer's Disease: A Look At Polygenetic Risk Scores, Melika Cummings, Yimei Lu, Joan Manuel Cue, Neel Patel, Jenifer Do

Undergraduate Research Symposium Posters

Blood-based biomarkers for neurodegenerative illnesses such as Alzheimer's disease (AD) have been extensively researched. Alzheimer's disease (AD) is a progressive neurological illness whose progression has been ascribed to gene expression. However, the pathophysiology of these disorders and its relationship to other abnormalities remain unknown. AD has been connected to PBCs, which include erythrocytes, platelets, and leukocytes and have a complicated interaction with the brain system. The pathogenesis of PBCs has been related to a negative influence on established neurodegenerative illnesses such as Alzheimer's. Candidate gene association studies have become more common as progress in mapping the human genome has increased …

Climate Change Hope Scale: Factor Analysis In An Adult Sample, Gemma Ortega, Steven J. Glover, Jesse Tabaczynksi, Orei Z. Odents

Undergraduate Research Symposium Posters

Willpower - how much individuals believe that set goals can be met. Waypower - the extent to which individuals can think of strategies for accomplishing those goals.

The Climate Change Hope Scale (CCHS; Li & Monroe, 2017) was designed to measure three aspects of hope: 1. Personal sphere willpower and waypower (WP) 2. Collective sphere willpower and waypower (CW) 3. Lack of willpower and waypower (LW).

A three-factor model fits the CCHS among adolescents. The purpose of our study was to determine if the three-factor model fits the CCHS in adults.

Choose Your Own Instruction Adventure: Giving Students Agency And Choice With Twine, Amber Sewell

Library Faculty Presentations

Twine, an interactive non-linear storytelling platform, can be used in a wide variety of instructional contexts. This interactive presentation will walk you through the author’s use of Twine for a library orientation, examine the tool’s pros and cons as an instructional tool, and provide suggestions for implementation.

Use Of Wastewater Surveillance For Early Detection Of Alpha And Epsilon Sars-Cov-2 Variants Of Concern And Estimation Of Overall Covid-19 Infection Burden, Van Vo, Richard L. Tillett, Katerina Papp, Shirley Shen, Richard Gu, Andrew Gorzalski, Danielle Siao, Rayma Markland, Ching-Lan Chang, Hayley Baker, Jingchun Chen, Martin Schiller, Walter Q. Betancourt, Erin Buttery, Mark Pandori, Michael A. Picker, Daniel Gerrity, Edwin C. Oh

Nevada Institute of Personalized Medicine Faculty Research

A decline in diagnostic testing for SARS-CoV-2 is expected to delay the tracking of COVID-19 variants of concern and interest in the United States. We hypothesize that wastewater surveillance programs provide an effective alternative for detecting emerging variants and assessing COVID-19 incidence, particularly when clinical surveillance is limited. Here, we analyzed SARS-CoV-2 RNA in wastewater from eight locations across Southern Nevada between March 2020 and April 2021. Trends in SARS-CoV-2 RNA concentrations (ranging from 4.3 log10 gc/L to 8.7 log10 gc/L) matched trends in confirmed COVID-19 incidence, but wastewater surveillance also highlighted several limitations with the clinical data. Amplicon-based whole …

Assessing Psychological Impact Of Covid-19 Among Parents Of Children Returning To K-12 Schools: A U.S. Based Cross-Sectional Survey, Kavita Batra, Jennifer R. Pharr, Emylia Terry, Brian Labus

School of Medicine Faculty Research

Background and Purpose: While impacts of the pandemic on family well-being have been documented in the literature, little is known about the psychological challenges faced by children and their parents as schools reopen after mandated closures. Therefore, the purpose of this study was to determine if sending children back to in-person school impacts the mental health of parents and the perceived mental health of their children. Methods: This cross-sectional descriptive study recruited a nationally representative, non-probability sample of parents or guardians (n = 2100) of children attending grades K-12 in the United States (U.S.) through a 58-item web-based survey. The …

American Rescue Plan Act (Arpa): City And County Budget Allocations In The Mountain West, Katie M. Gilbertson, Caitlin J. Saladino, William E. Brown Jr.

Economic Development & Workforce

This fact sheet details how city and county governments within the Mountain West states of Arizona, Colorado, Nevada, New Mexico, and Utah allocated funds from the State and Local Fiscal Recovery Fund (SLFRF) portion of the American Rescue Plan Act (ARPA). Brookings Metro in partnership with the National League of Cities and the National Association of Counties created the “Local Government ARPA Investment Tracker” to display how communities across the country allocate this financial resource. This interactive site allows budget information from cities and counties to be added as such decisions are made.

A 2020 Census Portrait Of America’S Largest Metro Areas: Population Growth, Diversity, Segregation, And Youth, William Frey

Policy Briefs and Reports

The nation’s major metropolitan areas—those with populations exceeding 1 million, which are home to nearly six in 10 Americans—have been a focal point of the nation’s economic vibrancy, politics, and racial and ethnic diversity. The 2020 census provides an opportunity to see how they fared in the 2010-2020 decade. Unlike the previous decade, major metro areas grew more sharply than their smaller-sized counterparts, and their cities showed growth surges even in a decade when the nation’s population registered historically low growth. Moreover, the increased racial and ethnic diversity that characterized the nation is especially concentrated in major metro areas and, …

Crafting Contemporary Indigenous Studies Collections In The Age Of Algorithms: A Case Study, Amy Tureen, Brittani Sterling

Library Faculty Presentations

This presentation provides an overview of "Crafting Contemporary Indigenous Studies Collections in the Age of Algorithms: A Case Study," a chapter that appeared in the 2021 ACRL text, Ethnic Studies in Academic and Research Libraries. Both the chapter and presentation slides describe a collection enhancement project focused on Indigenous Studies and, further, offers recommendations for others conducting similar work.

Electric Vehicle (Ev) Infrastructure In The Mountain West, 2020-2021, Olivia K. Cheche, Caitlin J. Saladino, William E. Brown Jr.

Transportation & Infrastructure

This fact sheet highlights data on electric vehicles (EVs) and EV charging stations, as originally reported by Zutobi in The 2022 EV Charging Station Report. This report examines the presence of EV infrastructure across the United States. The Mountain West states of Arizona, Colorado, Nevada, New Mexico, and Utah are considered here.

Mountain West Personal Income Growth, 2021, Kristian Thymianos, Caitlin J. Saladino, William E. Brown Jr.

Economic Development & Workforce

This fact sheet highlights personal income growth in the Mountain West states of Arizona, Colorado, Nevada, New Mexico, and Utah. The data are retrieved from The Pew Charitable Trusts (Pew) report, “Fiscal 50: State Trends and Analysis.” The compound annual growth rate in state personal income through the second quarter of 2021 and the year-to-year change in state personal income are presented. These values are adjusted for inflation.

The Theoretical Challenges In Ukraine, Andrew Kim

Calvert Undergraduate Research Awards

The unfolding situation in Ukraine seems like a scene out of the Cold War, the complexity within it not only lies in how fast these events are occurring but also in the unpredictability of Russia’s leader; to address this current conflict requires the acknowledgment of a brief background within these events and also the possible responses which we could expect to see. The following policy brief addresses the matter of the historical influences and challenges that would be facing US national security policy because of the Russia and Ukraine conflict and how this question isn’t a historical question, but rather …

Mental Disorder Symptoms During The Covid-19 Pandemic In Latin America – A Systematic Review And Meta-Analysis, Stephen X. Zhang, Kavita Batra, Wen Xu, Tao Liu, Rebecca Kechen Dong, Allen Yin, Andrew Yilong Delios, Bryan Z. Chen, Richard Z. Chen, Saylor Miller, Xue Wan, Wenping Ye, Jiyao Chen

School of Medicine Faculty Research

Aims There is a lack of evidence related to the prevalence of mental health symptoms as well as their heterogeneities during the coronavirus disease 2019 (COVID-19) pandemic in Latin America, a large area spanning the equator. The current study aims to provide meta-analytical evidence on mental health symptoms during COVID-19 among frontline healthcare workers, general healthcare workers, the general population and university students in Latin America. Methods Bibliographical databases, such as PubMed, Embase, Web of Science, PsycINFO and medRxiv, were systematically searched to identify pertinent studies up to August 13, 2021. Two coders performed the screening using predefined eligibility criteria. …

2023 Graduate Program Rankings, Unlv & Unr, Olivia K. Cheche, Joshua Padilla, Caitlin J. Saladino, William E. Brown Jr.

Higher Education

This fact sheet highlights the 2023 U.S. News and World Report graduate program rankings for the University of Nevada, Las Vegas (UNLV) and the University of Nevada, Reno (UNR). Rankings are displayed for graduate programs in the following fields: business; education; engineering; fine arts; law; medical; sciences and mathematics; and social sciences and humanities.

Both UNLV and UNR first achieved Carnegie R1 status in 2018 and retained the designation of very high research activity in December 2021. The graduate program rankings explored in this fact sheet help to illuminate efforts toward enhancing graduate education, an important metric to achieving and …

Validation Of Accelerometry As A Digital Phenotyping Measure Of Negative Symptoms In Schizophrenia, Gregory P. Strauss, Ian M. Raugh, Luyu Zhang, Lauren Luther, Hannah C. Chapman, Daniel N. Allen, Brian Kirkpatrick, Alex S. Cohen

Physics & Astronomy Faculty Research

Negative symptoms are commonly assessed via clinical rating scales; however, these measures have several inherent limitations that impact validity and utility for their use in clinical trials. Objective digital phenotyping measures that overcome some of these limitations are now available. The current study evaluated the validity of accelerometry (ACL), a passive digital phenotyping method that involves collecting data on the presence, vigor, and variability of movement. Outpatients with schizophrenia (SZ: n = 50) and demographically matched healthy controls (CN: n = 70) had ACL continuously recorded from a smartphone and smartband for 6 days. Active digital phenotyping assessments, including surveys …

Systematic Paleontology, Acritarch Biostratigraphy, And Δ13c Chemostratigraphy Of The Early Ediacaran Krol A Formation, Lesser Himalaya, Northern India, Shuhai Xiao, Ganqing Jiang, Qin Ye, Qing Ouyang, Dhiraj M. Banerjee, Birendra P. Singh, A. D. Muscente, Chuanming Zhou, Nigel C. Hughes

Geoscience Faculty Research

Acritarch biostratigraphic and δ13C chemostratigraphic data from the Krol A Formation in the Solan area (Lesser Himalaya, northern India) are integrated to aid inter-basinal correlation of early–middle Ediacaran strata. We identified a prominent negative δ13C excursion (likely equivalent to EN2 in the lower Doushantuo Formation in the Yangtze Gorges area of South China), over a dozen species of acanthomorphs (including two new species—Cavaspina tiwariae Xiao n. sp., Dictyotidium grazhdankinii Xiao n. sp.), and numerous other microfossils from an interval in the Krol A Formation. Most microfossil taxa from the Krol A and the underlying Infra-Krol formations are also present in …

Consideration Of Sex And Gender In Alzheimer’S Disease And Related Disorders From A Global Perspective, Michelle M. Mielke, Neelum T. Aggarwal, Clara Vila-Castelar, Puja Agarwal, Eider M. Arenaza-Urquijo, Benjamin Brett, Anna Brugulat-Serrat, Lyndsey E. Dubose, Willem S. Eikelboom, Jason Flatt, Nancy S. Foldi, Sanne Franzen, Paola Gilsanz, Wei Li, Alison J. Mcmanus, Debora Melo Van Lent, Sadaf Arefi Milan, Elizabeth C. Shaaban, Shana D. Stites, Erin Sundermann, Vidyani Suryadevara, Jean-Francoise Trani, Arlener D. Turner, Jet M. J. Vonk, Yakeel T. Quiroz, Ganesh M. Babulal

Social and Behavioral Health Faculty Research

Sex or gender differences in the risk of Alzheimer’s disease and related dementias (ADRD) differ by world region, suggesting that there are potentially modifiable risk factors for intervention. However, few epidemiological or clinical ADRD studies examine sex differences; even fewer evaluate gender in the context of ADRD risk. The goals of this perspective are to: (1) provide definitions of gender, biologic sex, and sexual orientation, and the limitations of examining these as binary variables; (2) provide an overview of what is known with regard to sex and gender differences in the risk, prevention, and diagnosis of ADRD; and (3) discuss …

Focus On Top Tier 2.0: Social Justice, Equity, And Inclusion, University Of Nevada, Las Vegas University Of Nevada, Las Vegas

Focus on Top Tier 2.0

Social Justice, Equity, and Inclusion is a stand alone core area to further enable action and ways to measure our progress. Metrics provide baseline data for faculty and staff, based on the 2019 Great Colleges to Work For survey. This survey has recently been administered and will provide insight as to how we can continue to improve our culture. In addition, metrics focused on student responses (National Survey of Student Engagement; Student Satisfaction Inventory) are included with the complete metrics.

Youth Mental Health In The Mountain West, Kristian Thymianos, Olivia K. Cheche, Kelliann Beavers, Katie M. Gilbertson, Caitlin J. Saladino, William E. Brown Jr.

Health

This fact sheet explores youth mental health metrics of Mountain West states from the Hopeful Futures Campaign’s 2022 report, America’s School Mental Health Report Card. This study provides state snapshots on school mental health policies and workforce availability for all 50 states and the District of Columbia. The Mountain West states of Arizona, Colorado, Nevada, New Mexico, and Utah are considered here.

Constructing A Bridge For New Teachers Evolving Schoolwide Communication During Covid, Cecilia Turman

Graduate & Professional Student Association Research Forum

This study investigated novice and veteran teachers' strategies for referring students to seek dean/administrative intervention. Participants included 16 pre-service, and 16 first year, and 16 teachers. The findings show that pre-service and new teachers seek to explore effective approaches rather than refer students to the dean reflecting three reasons: teachers disconnect with school administration, fear of administration's negative evaluation resulting from many referrals, and concerns of referral efficacy. This year, CCSD reported more than 5,000 violent acts, about the same number during 2018-2019, before Covid hiatus. Teachers blame this trend on lack of interaction (Chen for KTNV, 2022).