Digital Commons Network^™

Serendipityblah, Amanda Linn Kunkel

English Theses & Dissertations

So, you’ve stumbled upon my neck of the woods, where the weird and fantastical reside. Wit and humor may save you here but beware of what draws near. Beneath the bright and smiling facade, you may find the danse macabre. Within these pages you’ll find magic and wonder, darkness, and failure. The setting is post-March 2020 in Norfolk, Virginia. An urban city at the heart of Hampton Roads where the lines between reality and otherworldliness blur. Witches protect ghosts in a downtown Abbey. The fae break new ground in the art district of Ghent. Even Death stalks the halls of …

The Experiences Of School Counselors Providing Virtual Services During Covid-19: A Phenomenological Investigation, Allison Kathryn Worth

Counseling & Human Services Theses & Dissertations

School counselors are trained in providing academic, career, and social/emotional support to K-12 students. In March 2020, the Covid-19 pandemic took the world of K-12 education by surprise, forcing school counselors to deliver a virtual school counseling program with little to no time for preparation. School counselors were faced with meeting the seemingly ever-changing needs of K-12 students as social, political, and health concerns evolved throughout the pandemic. Although schools have since begun to reopen their doors, the effects of Covid-19 are far from over. The purpose of this study was to explore the experiences of United States (U.S.) public …

The Relationship Of Strength, Mobility, And Performance Variables On Throwing Speed In Baseball Catchers, Caleigh D. Hall

Human Movement Studies & Special Education Theses & Dissertations

Baseball is a popular sport worldwide and has thus garnered significant research focus, predominately of pitchers and hitters. However, research involving catchers is scant despite their major influence and consistent presence throughout a game. Therefore, the purpose of this study was to determine the relationship of lower body strength and mobility and performance with throwing speed in baseball catchers. We hypothesized that strength and mobility would have a positive relationship with ball speed, peak power generated while rising out of the squat position would be positively related to ball speed, shorter ascent time would be inversely related to ball speed, …

Entrepreneurship Education Relation To Mathematical Proficiency Amongst Secondary Youth, Mariam Abdelhamid

STEMPS Theses & Dissertations

Mathematical aptitude in the United States has been a concern over the past few decades, not only from an international perspective but from a student proficiency perspective. This phenomenon is also further negatively impacted due to COVID-19 associated learning loss. Correspondingly, there are calls for students to develop entrepreneurial skills to thrive in the 21st century economy. The purpose of this quasi-experimental study was to examine whether participation in an entrepreneurship class was related to mathematical proficiency (Algebra II) in high school. Data on students from two school districts were used, consisting of 2,741 and 1,172 Algebra II students in …

Bad Actors, Wendell Ward

English Theses & Dissertations

This manuscript contains a collection of short stories. It also includes the first several chapters of a novella. Within are characters who act and suffer consequences without the imposition of supernatural elements to affect outcomes, which is hopefully what makes them seem “real.” But then there are ambiguities and archetypes and symbolic imagery dancing around the edges of their predicaments, too. Think flambéed Flaubert with the saltiness of Hemingway and the peppery tang of Woolf complimented with a sugary pinch of Charlotte Bronte to bring out the flavor of the tomatoes, poured over with a rich, Jungian gravy. If this …

Fragmentation In The Dual Enrollment Experience: The Importance Of Students’ Self-Perceptions In Dual Enrollment First-Year Composition Students, Sarah Crystal Johnson

English Theses & Dissertations

Dual enrollment has become an embedded aspect of our writing programs yet is still an under-researched area within rhetoric and composition. One reason for this research gap is that many DE students experience their FYC courses on secondary campuses, liminal spaces that are more difficult to access for research. DE students within these spaces experience daily tensions between the collegiate expectations of FYC curriculum and the secondary social contexts in which their DE FYC courses are taught. These unique contextual experiences impact their perceptions of themselves as writers. This research is an attempt to step into this DE research gap …

Failure Mode, Effects And Criticality Analysis Of A Very Low Earth Orbit Cubesat Mission, Robb Christopher Borowicz

Mechanical & Aerospace Engineering Theses & Dissertations

When space programs launch vehicles into orbit, multiple failures could arise throughout the mission and corrective actions are often not an option. Applying reliability engineering approaches during the design phase focuses on analyzing risk by anticipating potential failures and mitigating uncertainties in the design. Old Dominion University, in partnership with the U.S. Coast Guard Academy, and the U.S. Air Force Institute of Technology designed and developed a 3U CubeSat mission to validate on-orbit, three space technology payloads. Mission SeaLion will fly as a secondary payload on stage two of Northrop Grumman’s Antares rocket and will be deployed in a very …

“Finding A Balance”: User, Reader, And Learner Functions In First-Year Composition Textbook Engagement, Travis Vincent Holt

English Theses & Dissertations

This qualitative, multiple participant case study investigates the phenomenon of student textbook engagement in a First-Year Composition course at a private, evangelical four-year university. Shifting away from a dominant history where textbooks served as the primary object of study (Besser et al., 1999; Carr, Carr, & Schultz, 2005; Colby, 2013; Connors, 1987; Edwards, 1984; Faigley, 1992; Gale & Gale, 1999; Hawhee, 1999; Issitt, 2004; Miles, 2000; Ohmann, 1979; Rendleman, 2009, 2011; Welch, 1987), I answered calls (Colby, 2013; Harris, 2012; Rendleman, 2009, 2011) to examine engagement with textbooks in context. Additionally, scholars have dominated discussions of textbooks; thus, the student …

Exploring The Workplace Climate At Police Agencies During Civil Unrest And The Factors Influencing Officers' Participation In Black Lives Matter Protesting, Joshua R. Ruffin

Sociology & Criminal Justice Theses & Dissertations

Scholars have long documented the negative relationship between police and communities of color. While these findings are of great importance, research remains limited on how connected police officers are to social justice movements (e.g., Black Lives Matter, or BLM for short) and the purposes behind why they exist. Furthermore, many studies focusing on police officer experiences tend to examine officer experiences with protesters, with limited studies focusing on their experiences with other officers during civil unrest and on the factors that influence their participation in protest movements when off duty. To help fill this gap, this study utilized semi-structured interviews …

An Analysis Of In-Service Choral Music Educators’ Methods Of Classroom Management, Brooke Ann Ward

Music Theses & Dissertations

The purpose of this study was to discuss topics of classroom management as it relates to the experience and training of pre-service music educators. Topics reviewed in the discussion include issues of mentorship, pre-service teacher training, experiential learning, student teaching experiences, conducting knowledge, and confidence in pre-service music educators. This research project was granted an IRB exemption by the Old Dominion University College of Arts and Letters.

The participants in the research survey were choral music educators who had accumulated one through 40 years of teaching experience. The participants were graduates of a music education degree program, or a music …

Evaluating Plant Uptake Of 4,4'-Methylenedianiline, Jeff Wight

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

4,4’-Methylenedianiline (MDA) is an important industrial chemical used primarily in the production of polyurethane. It is toxic and a suspected human carcinogen. Polyurethane is used in a wide variety of applications such as furniture cushioning, coatings, adhesives, sealants, and elastomers. Polyurethane in soil may degrade and release MDA. This is concerning due to some models predicting a high potential for MDA to be taken up by plants and stored in edible tissue, creating a possible route of exposure for humans and animals. In this project, the potential for MDA to be take up by plants was investigated in order to …

Improving Flood Inundation And Streamflow Forecasts In Snowmelt Dominated Regions, Irene Garousi-Nejad

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Much effort has been dedicated to expanding hydrological forecasting capabilities and improving understanding of the continental-scale hydrological modeling used to predict future hydrologic conditions and quantify consequences of climate change. In 2016, the National Oceanic and Atmospheric Administration’s (NOAA) Office of Water Prediction implemented the National Water Model (NWM) to provide nationally consistent, operational hydrologic forecasting capability across the continental U.S. The primary goal of this research was to develop hydrological tools that include modeling of flood inundation mapping and snowmelt contributions to river flow in snowmelt-dominated regions across the Western U.S. This dissertation first presents terrain analysis enhancements developed …

Thermodynamic Analysis Of A Novel Cycle For Nuclear Smr And Heat Transfer Performance Validation Of The Related Supercritical Working Fluids, Benjamin M. Pepper

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Currently, all operating nuclear power facilities in the U.S. follow the same general design and process: light-water reactors boil water into steam using bundles of nuclear fuel rods as a heat source, pumping that steam through a turbine which powers a generator to produce clean year-round electricity. Water is an effective coolant, but other facilities around the world have demonstrated the ability to use non-water-based coolants in nuclear reactor designs, which consequently have their own trade-offs. Some positive consequences of using different reactor designs include enhanced safety, better economics, and cheaper clean consumer energy. The work described in this paper …

Calibration Procedure For Dic Strain Measurements During Vibration-Based Fatigue Testing, Benjamin D. Hill

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Vibration-based fatigue testing is fast and effective method for determining failure characteristics of a material. Often, a small electrical device called a strain gage is bonded to a rectangular plate specimen to measure the deformation of the plate during a test. However, these strain gages break before the plate does, so an alternative method would improve the results obtained from the test. As an alternative to strain gages, Digital Image Correlation (DIC) is a non-contacting, camera-based technique that measures the deformation of an object by comparing digital images taken before and after the object is deformed. During a vibration-based fatigue …

The Gambler's Edge - A Theoretical Framework To Trading Securities, Matthew Haines

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Like gamblers, retail investors seeking excess returns in financial markets are prone to miscalculation and their models are often misspeciffied. Forecasting asset prices is extremely difficult in the long run and nearly infeasible in the short run. Additionally, retail investors are likely to be at a disadvantage both technologically and informationally—rarely will they be ahead of the curve. With these disadvantages and the difficulty of predicting future outcomes, retail investors may come to view prices as unpredictable and random in nature, like a roll of the dice. This theoretical research explores a possible investing methodology (derived from gambling principles) should …

A Computer Programming Intervention For Second Grade Math Students, Eric B. Bagley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The multiplication algorithms taught to elementary students are made to help students find answers quickly, but why the algorithm works and how it relates to multiplication is not widely known. For example, one intuitive meaning of multiplication is that of iterated, or, repeated, addition. In this paper, we look at the ways a visual, block-based, programming activity uses the concept of iteration to help second-graders learn multiplication. The results of the study observing second-grade students use visual programming and iteration to setup and solve multiplication story problems. We found that generally students enjoyed these activities and found them helpful during …

Artificial Intelligence And Deep Reinforcement Learning Stock Market Predictions, Andrew W. Brim

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Billions of dollars are traded automatically in the stock market every day, including algorithms that use artificial intelligence (AI) techniques, but there are still questions regarding how AI trades successfully. The black box nature of these AI techniques, namely neural networks, gives pause to entrusting it with valuable trading funds. This dissertation applies AI techniques to stock market trading strategies, but it also provides exploratory research into how these techniques predict the stock market successfully.

This dissertation presents the work of three research papers. The first paper presented in this dissertation applies a artificial intelligence technique, reinforcement learning, to candlestick …

Automated Quality Control For In-Situ Water Temperature Sensors, Leah S. Richardson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The identification of data not representative of the target subject for outdoor (in-situ) environmental sensors (bad data) is a topic that has been explored in the past. Many tools (such as data filters and computer models) have succeeded in providing an end user with properly identified incorrect data over 95% of the time. However, with the continuous increase in the use of automated data collection, a simple indication of the bad data may no longer provide the end user with enough information to reduce the amount of time that must be spent for manual quality control. The purpose of this …

Dynamical Systems Analysis In Adaptive And Metapopulation Ecology With Applications To Conservation Management, Guenchik Grosklos

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The ability for a species to persist largely relies on how well they adapt to the environment and their interactions with local and global communities. Specifically, if adaptation occurs quickly enough or nearby communities sufficiently promote growth rates, populations at risk of extinction may persist. In this dissertation, we first develop a method that estimates and compares rates of change in time series data of population densities and measurable traits (phenotypes). Additionally, we compare between genetic (evolutionary) and non-genetic (plastic) trait change to determine whether phenotypes change faster when driven by evolutionary or plastic change. We then focus on metapopulation …

Network-Wide Pedestrian And Bicycle Crash Analysis With Statistical And Machine Learning Models In Utah, Md Rafiur Rahman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Recent trends in crashes indicate a dramatic increase in both the number and share of pedestrian and bicyclist injuries and fatalities nationally and in many states. Crash frequency modeling was undertaken to identify crash prone characteristics of segments and non-signalized intersections and explore possible non-linear associations of explanatory variables with crashes. Crowdsourced “Strava” app data was used for bicycle volume, and pedestrian counts estimated from nearby signalized intersections were used as pedestrian volume. Multiple negative binomial models investigated crashes at different spatial scales to account for different levels of data availability and completeness. The models showed high traffic volume, steeper …

The Impact Of Covid-19 And Telehealth Services On Attrition Rates In Psychotherapy, Rylan B. Hellstern

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Clinicians in psychotherapy are constantly looking at their outcomes in order to identify and remove barriers that may inhibit effective treatment. Defined generally as the ending of a treatment prior to proper optimal benefit, attrition has been found to both hinder treatment efficacy and cost-effectiveness in therapy. While most attrition literature focuses on the contributing factors to such premature termination, little to no research is available that discusses potential resources for attrition rates. The COVID-19 pandemic has resulted in the use of telehealth services which may serve as a resource to combat attrition. The current study aims to identify how …

Exploring The Role Of Metabolites In Cancer And The Associated Nerve Crosstalk, Inah Gu, Emory A. Gregory, Casey Atwood, Sun-Ok Lee, Young Hye Song

Biomedical Engineering Faculty Publications and Presentations

Since Otto Warburg's first report on the increased uptake of glucose and lactate release by cancer cells, dysregulated metabolism has been acknowledged as a hallmark of cancer that promotes proliferation and metastasis. Over the last century, studies have shown that cancer metabolism is complex, and by-products of glucose and glutamine catabolism induce a cascade of both pro- and antitumorigenic processes. Some vitamins, which have traditionally been praised for preventing and inhibiting the proliferation of cancer cells, have also been proven to cause cancer progression in a dose-dependent manner. Importantly, recent findings have shown that the nervous system is a key …

Chromosome-Level Thlaspi Arvense Genome Provides New Tools For Translational Research And For A Newly Domesticated Cash Cover Crop Of The Cooler Climates, Adam Nunn, Isaac Rodríguez-Arévalo, Zenith Tandukar, Katherine Anna Frels, Adrián Contreras-Garrido, Pablo Carbonell-Bejerano, Panpan Zhang, Daniela Ramos Cruz, Katharina Jandrasits, Christa Lanz, Anthony Brusa, Marie Mirouze, Kevin Dorn, David W. Galbraith, Brice A. Jarvis, John C. Sedbrook, Donald L. Wyse, Christian Otto, David Langenberger, Peter F. Stadler, Detlef Weigel, M. David Marks, James A. Anderson, Claude Becker, Ratan Chopra

Department of Agronomy and Horticulture: Faculty Publications

Thlaspi arvense (field pennycress) is being domesticated as a winter annual oilseed crop capable of improving ecosystems and intensifying agricultural productivity without increasing land use. It is a selfing diploid with a short life cycle and is amenable to genetic manipulations, making it an accessible field-based model species for genetics and epigenetics. The availability of a high-quality reference genome is vital for understanding pennycress physiology and for clarifying its evolutionary history within the Brassicaceae. Here, we present a chromosome-level genome assembly of var. MN106-Ref with improved gene annotation and use it to investigate gene structure differences between two accessions (MN108 …

Intercontinental Movement Of Highly Pathogenic Avian Influenza A(H5n1) Clade 2.3.4.4 Virus To The United States, 2021, Sarah N. Bevins, Susan A. Shriner, James C. Cumbee Jr., Krista E. Dilione, Kelly E. Douglass, Jeremy W. Ellis, Mary Lea Killian, Mia K. Torchetti, Julianna B. Lenoch

United States Department of Agriculture Wildlife Services: Staff Publications

We detected Eurasian-origin highly pathogenic avian influenza A(H5N1) virus belonging to the Gs/GD lineage, clade 2.3.4.4b, in wild waterfowl in 2 Atlantic coastal states in the United States. Bird banding data showed widespread movement of waterfowl within the Atlantic Flyway and between neighboring flyways and northern breeding grounds.

An Examination Of Interactions Of U.S. Players With Offshore Gambling Sites And Online Casino Reviews: Are They Offenders Or Victims?, Sinyong Choi

UNLV Theses, Dissertations, Professional Papers, and Capstones

While the recent liberal stance of the United States has facilitated the proliferation of legal online gambling venues, the ‘black market’ of online gambling remains prevalent. Illegal online gambling poses concerns for the legal market and risks for gambling addiction and consumer protection. Numerous law violations occur in this domain, which are produced by the interactions between players, gambling sites, and online casino reviews. Exploring the interactions of players with online gambling sites and online casino reviews is vital in enhancing our understanding of illegal online gambling activity and therefore allows us to develop preventive measures that can reduce the …

Evaluating Repetitive Transcranial Magnetic Stimulation To Reduce Opioid Cravings In Opioid Use Disorder, Cameron Duncan

UNLV Theses, Dissertations, Professional Papers, and Capstones

Opioid Use Disorder (OUD) is a multi-faceted, complex ailment affecting many individuals and their families across the globe. Currently, there are multiple interventions used in the treatment of OUD, many of which are designed to reduce cravings for opioids. Cravings for opioids are a strong predictor of relapse in the disorder. However, many of the interventions used in clinical practice have inherent risks including a potential for abuse and diversion. Repetitive Transcranial Magnetic Stimulation (rTMS) is an outpatient procedure that may be effective in reducing cravings for opioids, thereby reducing relapse. Methods: This study employed a randomized, single-blind, experimental design …

Cost Of Attendance And Competitive Balance In The Ncaa Division I Football Bowl Subdivision, Michelle Calica Coyner

UNLV Theses, Dissertations, Professional Papers, and Capstones

The National Collegiate Athletic Association (NCAA) justifies its power and regulatory structure as necessary to promote competitive balance. Despite this, there is limited research on the efficacy of NCAA policies that were implemented with the intention of supporting more parity in Division I conferences. This study examined whether the 2015 cost of attendance (COA) policy was associated with competitive balance in various groups within the Division I Football Bowl Subdivision. Through the lenses of the Matthew Effect and policy design theory, this study aimed to understand how NCAA policies may hurt or help inequality in college sport. Although not all …

Revisiting The Smartphone And Learning Inventory (Sali): Perspectives Of Preservice Teachers, Bridget K. Daleiden

UNLV Theses, Dissertations, Professional Papers, and Capstones

The implications of the presence and usage of smartphone technology in learning contexts are not fully understood. Self-regulated learning (SRL) theory offers a theoretical framework in which smartphone use can be explored. Researchers have recently developed a measure of smartphone use while studying, the Smartphone and Learning Inventory (SALI) (Hartley et al., 2020b). The present study is an exploratory qualitative analysis designed to compare open-ended responses to the 3-factor structure of the SALI. A thematic analysis of open-ended responses from a sample of preservice teachers was conducted. The purpose of the current research is to explore themes that may represent …

Psychometric Properties Of The Eating Disorder Examination Questionnaire: Factor Analysis And Measurement Invariance By The Intersection Of Race And Gender, Jessica H. Habashy

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Eating Disorder Examination Questionnaire (EDE-Q) was originally validated in non-Hispanic White women and over the past two decades has become widely used as an eating pathology screening measure in college students. However, the original factor structure has generally failed to replicate across most studies, particularly among culturally diverse samples. The current study examined the factor structure and measurement invariance of the EDE-Q in a large sample of gender and racially/ethnically diverse college students. Participants included a racially and ethnically diverse sample of men and women from two universities. I first conducted exploratory factory analysis (EFA) to examine the factor …

Changes In Cognitive Networks As A Result Of Sport-Related Concussion, Grace J. Goodwin

UNLV Theses, Dissertations, Professional Papers, and Capstones

Given the high prevalence of concussion in sports, assessment of cognition has become a standard part of athletics, and results are used to inform return to play decisions. Neurocognitive measures (e.g., ImPACT) generate cognitive composite scores from individual subtests, and these scores are compared at baseline and post-concussion. Declines in scores provide evidence for concussive injury, and athletes undergo repeated assessments until their scores and symptoms improve. Recent research suggests that changes in the associations between test scores may provide important information about cognitive recovery. A network framework may help identify post-concussive cognitive changes that may not be apparent when …