Digital Commons Network^™

Co-Construction Of Identities Within The Home Brewing Community Of Practice, Ryan Julius Miller

Electronic Theses, Projects, and Dissertations

This project applies Community of Practice (CoP) theory to examine co-constructions of identity and membership within a Community of Practice based around the home brewing of beer. The study focuses on both the interactions of members with each other and within the community, as well as how the members display their membership and expertise while participating in their practice and acting as identifiable members of their community.

By observing members and their interactions as members of a community, this study attempts to both further the development and understanding of Community of Practice theory as well as gaining understanding of a …

Symmetric Presentations Of Finite Groups And Related Topics, Samar Mikhail Kasouha

Electronic Theses, Projects, and Dissertations

A progenitor is an infinite semi-direct product of the form m∗n : N, where N ≤ Sn and m∗n : N is a free product of n copies of a cyclic group of order m. A progenitor of this type, in particular 2∗n : N, gives finite non-abelian simple groups and groups involving these, including alternating groups, classical groups, and the sporadic group. We have conducted a systematic search of finite homomorphic images of numerous progenitors. In this thesis we have presented original symmetric presentations of the sporadic simple groups, M12, J1 as homomorphic images of the progenitor 2∗12 : …

Adverse Childhood Experiences (Aces): Role Of Emotional Intelligence On Psychological Distress, Ariana Romero, Sean Panganiban

Electronic Theses, Projects, and Dissertations

Currently, over 60% of adults in the U.S have suffered from at least one adverse childhood experience (ACE). The impact of ACEs on mental health and well-being has been immensely researched over the past couple decades. The current study aims to see how emotional intelligence impacts psychological distress among individuals who have experienced ACEs. Researchers conducted a quantitative study in which 3 surveys were administered to a group of 93 voluntary participants via Qualtrics on social media platforms. Participants completed the following surveys: BEIS-10 (Emotional intelligence measure), K-6 (psychological distress measure) and the ACEs questionnaire. Results found that there was …

The Privatization Of The Prison System In The United States: A Comparative Study Of Rehabilitative Resources, Wendi Witherell

Electronic Theses, Projects, and Dissertations

Facing high rates of mass incarceration and prison overcrowding, the United States of America seems to believe that the privatization of its prison system could be a viable solution to the aforementioned problems. Despite the increased incarceration rates of the past few decades, the gradual privatization of the prison system is an understudied area. It is therefore important to understand the rationale behind the movement away from the public sector toward the private sector. This cross-sectional study adopted three theoretical approaches—Models of Incarceration Theory, Political Explanation Theory, and Overcrowding Theory—in an attempt to determine such rationale. It was hypothesized there …

Coping Skills Amongst Social Workers, Sandra Quezada

Electronic Theses, Projects, and Dissertations

This research study used a questionnaire to identify coping behaviors and feelings of social workers dealing with work related stress. The purpose of this research was to identify the most used coping behaviors of social workers. Data was collected from thirty-six participants who had access to southern California social worker blogs. Findings were that over half (63.9) of participants used emotion focused behaviors such as “growing as a person” and “discuss feelings with someone” as a coping behavior. The findings contribute to coping research, but this research also identifies social workers as not using enough coping behaviors. Recommendations for social …

The Effectiveness Of Best Management Practices Implemented At Lake Gregory, Crestline, Ca, Devin Darrow

Electronic Theses, Projects, and Dissertations

Water quality deterioration of recreational surface waters from excess pollution inputs is a significant concern for the health of the public and aquatic ecosystem. This study will examine the effectiveness of Best Management Practices (BMPs) in reducing pollution inputs into Lake Gregory, Crestline, CA. The effectiveness of the BMPs was examined by testing for water quality parameters including dissolved oxygen, temperature, pH, conductivity, turbidity, nitrate (NO3-), ammonium (NH4+), total coliform, and Escherichia coli on weekly to bi-weekly basis for a period of 1 year. A statistical analysis involving descriptive statistics, Pearson’s correlation, the Efficient Ratios (ER) and Percent Removal Rates …

The Impact Of Religion And Spirituality On County Child Welfare Workers, Celeste Ramos, Sonia Magdaleno Ayamel

Electronic Theses, Projects, and Dissertations

This study aims to identify and analyze how county child welfare workers can utilize their own religious and spiritual beliefs to alleviate some of the work-related stress. In addition, the study will examine how participating in religious or spiritual support groups will benefit county child welfare workers. The findings may encourage social workers to rely on their respective religious and spiritual beliefs while dealing with difficult situations.

Injection Drug Users (Idus), Blood-Borne Diseases, And The Role Of Needle Exchange Programs, Lilibeth Guzman

Electronic Theses, Projects, and Dissertations

Objective: Needle exchange programs are designed to educate injection drug users of healthy drug behaviors and establish a controlled environment to prevent blood-borne diseases through clean needles and provide treatment to reduce blood-borne diseases and become drug-free. This study observed the prevalence of blood-borne diseases among injection drug users as well as the general population. The study used publicly available data of drug use to assess differences by race/ethnicity, and participation in needle exchange programs.

Methods: Quantitative methods were used with the 2019 National Survey on Drug Use and Health. Analysis began with descriptive statistics, followed by regression analyses to …

Identification And Analysis Of The Contribution Of Various Sources Of Total Dissolved Solids (Tds) In Lake Elsinore Potable Water And Wastewater, Lenai Hunter

Electronic Theses, Projects, and Dissertations

Total Dissolved Solids (TDS) are primarily inorganic salts that can pass through a 2-micron (or smaller) filter and, when found in high concentrations, can cause adverse effects on aquatic organisms and the surrounding environment. The agency servicing Lake Elsinore and surrounding areas is the Elsinore Valley Municipal Water District (EVMWD). EVMWD’s wastewater treatment facilities are not equipped to remove TDS from the wastewater. Therefore, the influent TDS values are often similar to the final treated effluent recycled water TDS values. EVMWD has permit limits at the wastewater treatment plants relating to TDS, and due to the higher influent TDS concentrations …

Through Their Eyes: A California Indian Art Exhibit, Michael Chavez

Electronic Theses, Projects, and Dissertations

In this project I have demonstrated my professional proficiency by curating an exhibit from conception to completion. During the duration of this project I was required to use diverse museum sciences skillset including collections management, curation, development and design of the exhibit. Curated and built inside the Great Hall at the Dorothy Ramon Learning Center in downtown Banning, ancestral lands of the Serrano, this project displays not only my career skillset but also my proud connection to the California Landscape. As Tongva of the Los Angeles River Basin, I also had the opportunity to showcase the artwork of other California …

The “Honorable” Woman: Gender, Honor, And Privilege In The Civil War South, Sarah West

Electronic Theses, Projects, and Dissertations

When past wars are discussed or taught in a mainstream setting, the focus is often on the soldiers, the battles, and the generals that led them. The topic of the people who passively lived through them is rarely included in the narrative and when it is, it usually pertains to the people on the winning side. During the Civil War, the Southern women made tremendous contributions on the home front. Although social construction of southern honor paved the way for patriotic expressions, as the war went on many women found themselves discarding these honorable gestures in favor of self-preservation. The …

The Effects Of Covid-19 On Social Work Students, Rosanne Cabonce

Electronic Theses, Projects, and Dissertations

This research project describes the relationship between anxiety and social support in Bachelors and Masters of Social Work students (N = 80) in a public state university. College students, specifically Social Work students, have been adversely affected due to consequences of COVID-19. Different areas of their life including their academic, financial, and especially, their mental health (e.g. anxiety) have been impacted due to the pandemic. A quantitative, descriptive study is conducted utilizing instruments to investigate anxiety and social support these students face during the pandemic. Correlation analysis is utilized to determine the relationship between anxiety and social support. Not many …

100 Seconds To Midnight, Melissa Medina

Electronic Theses, Projects, and Dissertations

My artistic practice focuses on the concept of mortality and investigates the human condition. Through my work, I often personify the concept of death and investigate the several forms that it may take across several cultures. The skull is most often used as a symbol of mortality, and it serves as one of the key elements in my work. I am drawn to the elements portrayed in classical memento mori paintings, and as a result, I have borrowed certain objects commonly used in these works and have paired them alongside more modern elements to create a new narrative. With this …

As Seen On Tv: Representation Of Women In Advertisements And The Effects On Women’S Self-Perceptions, Self-Objectification, And Self-Dehumanization, Kori Gearhart

Electronic Theses, Projects, and Dissertations

When women are exposed to sexually objectifying advertisements, they experience many adverse effects such as increases in self-objectification and dehumanization of other women (Vaes, Paladino, and Puiva, 2011). Because these effects might be amplified by food advertisements in which the line between a woman’s body and a food item is non-discernible, we examined whether “women as consumable” advertisements lead women to implicitly self-dehumanize and experience reduced body satisfaction. Women (N=129) viewed a woman in hamburger advertisement. Participants were randomly assigned to one of three conditions, control condition (non-sexualized woman with a burger), sexualized condition (topless woman with burger), and edible …

Terms Of Service Agreement Contracts: An Overview Of Personal Risk Management And Recommendations For Enhancing User Awareness, Brenda Collazo Taylor

Electronic Theses, Projects, and Dissertations

This cumulative project will explore the personal risks involved when a user agrees to an online service’s Terms of Service (TOS) Agreement contract, especially when a user checks the “I Agree” box on an online service’s TOS. The key questions were: (1) What are the personal risks involved when a user clicks on the “I Agree” box on an online service TOS Agreement? (2) How are these risks co-related? and (3) How can end users mitigate risks after they have agreed to the TOS? To answer the questions, various TOS agreements were reviewed, and a poll was conducted asking a …

Narrative Inquiry Of Opt Workers In Manufacturing Engineering Fields, Marietta Joleen Watson

All-Inclusive List of Electronic Theses and Dissertations

Optional Practical Training (OPT) is a highly valued and highly underutilized program designed to offer international students an opportunity to work in the U.S. and train in their field of study. This qualitative study collected and analyzed the narratives of three alumni of a Midwest university who completed OPT in the manufacturing engineering field. Four themes were identified in the narratives. These themes were inextricable to the premise that OPT is a deeply appreciated opportunity for F-1 students. The first theme is viewing the OPT experience as a system which includes the university, USCIS, and the employer and moreover a …

An Analysis Of Charging Practices And Their Impact On Battery Degradation In North American Electric Vehicles Built Between 2010-2020, Douglas William Edward Ferrier

All-Inclusive List of Electronic Theses and Dissertations

Electric vehicles (EVs) are emerging as a component of the global solution to combat climate change. However, in North America, particularly in the United States and Canada, the transition away from internal combustion engines (ICE) has been slow. North America faces unique challenges due to its geographical size and population in comparison to other continents. The good news is that EV adoption is increasing within North America. Along with increased EV adoption, governments and public companies are constructing charging infrastructure to support increased consumer EV purchases. Despite increased adoption, many future and current owners throughout North American society have concerns …

Membrane Bioreactor For Enhanced Enzymatic Hydrolysis Of Cellulose, Saleha Abdullah Al-Mardeai

Dissertations

With the rising environmental concerns related to fossil fuels utilization and the depletion of these resources, interest in bioethanol from lignocellulosic waste as an alternative, sustainable energy source has been increasing. Date palm waste is considered a good feedstock for bioethanol production, especially in countries of large date palm plantations, such as the United Arab Emirates.

In the lignocellulose to bioethanol process, the enzymatic hydrolysis of celluloses to produce simple sugars that can be converted to bioethanol by fermentation is the most challenging step, and enhancing it is essential for efficient and feasible operation. Enzyme inhibition by the products is …

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 …