Digital Commons Network^™

Low Resource Assay For Tracking Sars-Cov-2 In Wastewater, Julissa Van Renselaar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Wastewater based epidemiology (WBE) allows for the tracking of nucleic acid of SARS-CoV-2 in wastewater which gives the opportunity for the public and government officials to be informed about the infectivity of the virus in a community. Advances have been made in WBE that have allowed for higher performance, lower resource use, and faster turnaround time. An adapted concentration method of spin column direct extraction has yielded a proxy virus recovery of 83%, consumable cost of $2.01 per sample, and a turnaround time of 0.33 hour/sample. Other concentration methods have lower proxy virus recoveries, comparable cost, and comparable turnaround time. …

Statistical Challenges And Methods For Missing And Imbalanced Data, Rose Adjei

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Missing data remains a prevalent issue in every area of research. The impact of missing data, if not carefully handled, can be detrimental to any statistical analysis. Some statistical challenges associated with missing data include, loss of information, reduced statistical power and non-generalizability of findings in a study. It is therefore crucial that researchers pay close and particular attention when dealing with missing data. This multi-paper dissertation provides insight into missing data across different fields of study and addresses some of the above mentioned challenges of missing data through simulation studies and application to real datasets. The first paper of …

Bugs, Bullets And Birds: Factors Affecting The Health And Survival Of Ferruginous Hawk Nestlings In The Intermountain West, Ellis A. Juhlin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Ferruginous Hawks are a bird of prey species that nest in sagebrush steppe and grassland habitat. These birds are threatened by habitat loss and fragmentation from urbanization, rural development, oil and natural gas extraction, habitat treatment projects, and wildfires, and experiencing widespread population declines across their breeding range. Because of this, Ferruginous Hawks (FEHAs) have been deemed a Species of Greatest Conservation Need by state management agencies in Utah, Idaho, Wyoming and Nevada. The health and survival of Ferruginous Hawk (FEHA) nestlings is crucial to long-term population viability. Understanding the threats these birds are facing as nestlings can provide valuable …

The Efficacy And Feasibility Of Web-Based Acceptance-Enhanced Behavioral Treatment For Trichotillomania In Adults: A Randomized Waitlist-Controlled Trial, Leila K. Capel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Trichotillomania, or chronic hair pulling, impacts several aspects of a person’s everyday life and functioning including making it difficult to fully engage in school, work, romantic relationships, and other social relationships. There are several treatment options for trichotillomania and one that is particularly promising is acceptance and commitment therapy-enhanced behavioral therapy (AEBT). Several studies have been done in person and through telehealth and this treatment has helped participants.

Many people in the U.S. struggle with trichotillomania but many people are not able to access treatment for their hair pulling because clinicians are not available in their area, clinicians are not …

Effects Of Obesity On Knee Extensor Structure, Function, And Gait: A Systematic Review And Meta-Analysis, Michael N. Vakula

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Obesity is a common, costly, and critical disease that increases the risk of disability and premature death. Most commonly, obesity is caused by an increased consumption of energy dense foods and decreased time spent being physically active. The greater weight with obesity interrupts normal musculoskeletal function which can lead to physical adaptations such as decreased lower-extremity muscle strength and abnormal walking patterns, both of which are among top risk factors for falls in older individuals. However, the effects of obesity on walking and lower-extremity muscle strength have not previously been examined by incorporating the results of all existing studies in …

Storytelling To Promote Mental Health: A Conceptual Analysis And Application With Acceptance And Commitment Therapy For Depression, Carter H. Davis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Mental health treatments can be delivered in many ways. One approach is to use storytelling to communicate healthy practices. While societies across the world have engaged in storytelling for thousands of years, these practices have been used less in the mental health field. The aim of this project was to study the overlap between the areas of mental health and storytelling. We also tested how a storytelling-based mental health treatment could help solve a particular clinical problem. In this case, the problem of people who receive inadequate help for managing depression through medication alone.

We examined one particular mental health …

Together, Our Voices Will Strengthen The Weaving: Using Autoethnography And Narrative Inquiry To Indigenize Sense Of Belonging In Higher Education, Devon S. Isaacs

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Native American students in higher education are often asked to find a sense of belonging in places and spaces that do not reflect their cultures or worldviews. This can lead to isolation and a feeling of having to choose between themselves and their identities as Indigenous peoples. This contributes to poorer mental health, loss of well-being, and decreased academic success. The purpose of this study was to ask seven Native American participants how they defined sense of belonging from their own worldviews. Participants were also asked about spaces and places in higher education that helped or did not help them …

The Role Of Dysfunctional Beliefs And Attitudes About Sleep (Dbas), Rumination, Psychological Inflexibility, And Insomnia Among College Students, Guadalupe G. San Miguel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of the study was to understand additional variables that play a role between insomnia and the inability to stay present with internal feelings/emotions (i.e., psychological inflexibility) among college students. These variables that were predicted to help explain this relationship include dysfunctional sleep-related cognitions and insomnia rumination. To do this, college students were surveyed online at the start of the study and one month later. In addition, to be included in the study they must have been enrolled in a 2- or 4-year university, have access to the internet, and not diagnosed with another sleep disorder. Participants (n …

Quantifying Floral Resource Availability Using Unmanned Aerial Systems And Machine Learning Classifications To Predict Bee Community Structure, Jesse Anjin Tabor

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Bees are important for agricultural and non-agricultural ecosystems because they pollinate both wild plants and commercial crops. Flowers provide pollen and nectar resources that bees use to survive and reproduce. Measuring the relationship between the floral community and bee community may help apiarists and land managers to make informed decisions in managing wild and domesticated bee species. Manual methods to describe and count flowering vegetation is costly in time and personnel. Unmanned aerial vehicle (UAV) technology may be an efficient way to describe and count flowering vegetation on a large scale. UAVs with classification analysis and ground transect surveys were …

Modeling And Control Of Battery Management Systems With High-Frequency Ac Link Coupled Multiport Series Resonant Converters For 2nd Life Battery Applications, Brooks Jace Maughan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

While the use and production of Electric Vehicles becomes more prevalent, it is also important to make this economical and ensure the reduction of a carbon footprint. Second-life batteries can satisfy both problems as batteries can be used in a second-life application for lower power purposes such as supplementing the grid so the infrastructure needed to charge the expanding fleet of Electric Vehicles can be easily supplied. This thesis goes through the process of Active Cell Balancing which will produce equal capacities, or similar batteries, that can be more efficiently used in these and other types of second-life applications. The …

Development Of In Situ Second-Order Nonlinear Optical Scatterings For Molecular Behaviors At Aerosol Surfaces, Yuqin Qian

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Aerosol particles are one of the most important components of the atmosphere. During the growth of aerosol particles, they directly or indirectly affect air quality, human health, and environmental chemistry. Therefore, understanding the chemical and physical properties of such particles is an important scientific, engineering, and medical issue. The growth of aerosol particles in the atmosphere is closely related to the chemical structure at its surface, as well as the heterogeneous reactions which take place at and below the particle’s surface. However, there is a lack of suitable surface-specific analytical techniques which directly measure the chemical structure of aerosol particle …

Validation And Exploration Of The Multidimensional Psychological Flexibility Inventory With A Sample Of Adolescents, John Barr

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The current study attempted to further psychological flexibility literature by validating the Multidimensional Psychological Flexibility Inventory (MPFI) with a sample of adolescents (ages 16 and 17). This analysis also examined how the MPFI associates with other indicators of psychological flexibility, distress (depression, anxiety, somatic symptom severity and related distress, difficulties in emotion regulation) and well-being (subjective happiness, life satisfaction, self-compassion, emotional approach coping).

Results from this study suggested that psychological inflexibility as measured by the MPFI positively associated with a number of measures of distress, but generally did not inversely correlate with measures of well-being in a theoretically-consistent manner, which …

Dust Deposition Changes Production, Chlorophyll-A And Community Composition In Mountain Lakes, Jiahao Wen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Increasing quantities of dust emitted from semi-arid soils, agricultural soils, and urban regions are blown to remote mountain lakes in the American West. Remote mountain lakes lacking local nutrient inputs and presenting simple food webs that are easily affected by climate changes. Dust can carry nutrients (e.g., nitrogen and phosphorus) to mountain lakes and potentially enhance algae growth and change algal communities. However, experimental tests of this hypothesis are lacking. Using in situ experiments, we investigated the effects of dust enrichment on the production, biomass, and primary algal species in three mountain lakes in the American West. We found that …

Integrated Concept Mapping As A Method For Democratically Evaluating A Teacher Preparation Program In The Area Of Classroom Assessment Proficiency, Carrie Elizabeth Ashcraft

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This dissertation reviews current policies regarding Teacher Preparation Program (TPP) evaluation and addresses “accountability era” influences which often minimize factors related to equity and promote a limited view of teacher and school “effectiveness.” Integrated concept mapping is proposed as an alternative method of evaluation because of its democratic framework for accountability. Using this method, a TPP in the Mountain West was evaluated in the area of classroom assessment.

Preference Reversals In Delay Of Gratification, Jeremy M. Haynes

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Intertemporal choices are decisions between outcomes occurring at different times. For example, people may choose to quit smoking cigarettes for the delayed health-related benefits associated with abstention, or they may continue to smoke for the immediate gratification associated with smoking now. Importantly, patterns of intertemporal choices among people are associated with a number of maladaptive behaviors (e.g., cigarette smoking). In the present set of studies, I examine a facet of intertemporal choice: preference reversals. Although there are multiple forms of preference reversal, I focus on those characterized by shifts in preference from a larger-later reward to a smaller-immediate reward after …

Insecticide Susceptibility And Resistance Detection In Phlebotomus Argentipes Sandflies (Diptera: Psychodidae: Phlebotominae), Shawna M. Hennings

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Leishmaniasis is an understudied disease found predominantly in high heat and humidity areas. The disease is transmitted by sandflies which are blood-feeding, biting insects. There is currently no known vaccine for any form of leishmaniasis and treatment imposes a significant economic impact on already poor and marginalized populations, as well as severe, lingering side effects for afflicted individuals. Annually, there are millions of people around the world afflicted with a form of Leishmaniasis that is transmitted by species of sandflies. The primary sandfly population control method for over half a century has been indoor residual spraying using insecticides. The selective …

Immunological Tradeoffs And The Impacts Of Urbanization On The Reproductive Ecology And Physiology Of The Side-Blotched Lizard (Uta Stansburiana), Emily E. Virgin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Investing resources into reproduction can limit energy available to other competing demands, such as fighting off an infection; yet, both processes are necessary for organisms to survive and pass on their genes to the next generation. These strategies often follow patterns associated with lifespan, such that shorter-lived animals are more likely to invest more resources into reproduction over survival, and vice versa in long-lived animals. However, environmental change caused by urbanization can disrupt these relationships, and the within- and transgenerational costs of urbanization on females and offspring are unknown. I address these uncertainties in three research chapters to better understand …

Assessing Post-Fire Revegetation Efforts In Box Elder County, Utah, Using The Rangeland Analysis Platform, Rayce Bryan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

After fires occur in western rangelands, land management agencies commonly perform vegetation treatments and reseeding projects. The West Box Elder Coordinated Resource Management Group expressed concern regarding the difficult process of determining outcomes from the many post-fire revegetation projects undertaken on rangeland of Box Elder County, Utah. This research attempted to compile and clarify the fire and treatment history of the county and produce an assessment of the outcomes from each unique post-fire treatment in West Box Elder County. Also produced was a database of post-fire revegetation outcomes in published literature.

Unique treatment polygons were identified and then subset according …

Normative Evaluations Of Resource Conditions: The Influence Of Visitor Characteristics And Implications For Recreation Management In Urban-Proximate Parks, Jordan E. Nesbitt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Urban-proximate parks and protected areas provide a unique recreation landscape to individuals living in and near urban centers. They have been shown to provide similar recreation experiences to traditionally studied parks and protected areas such as National Parks, National Forests and Wilderness areas. This study takes place in a set of four urban-proximate parks in Orange County, California, USA. These parks are designated as urban-proximate because they are located within 100 miles of an urban center with 1 million or more people. Using norm theory, a well vetted social science theory, this work sought to identify thresholds of acceptability for …

Treason Town: Cities As Traitors During The U.S.-Mexican War, Kelsey Foster

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

During the U.S.-Mexican War (1846-48) the U.S. army invaded Mexico from several fronts. The Mexican Army was unable to prevent U.S. troops marching into and occupying Mexico City, resulting in the transfer of a vast swath of territory from Mexico to the United States. Historians offer several explanations for Mexico's inability to repel this invasion, and one of them is the disunity of the Mexican nation. Evidence of this disunity can be seen in the response of some local leaders when they were confronted with the invading army: instead of fighting, they elected to surrender, allowing U.S. troops to occupy …

Characterizing Karst Mountain Watersheds Through Streamflow Response To Snowmelt, Daniel Meade Thurber

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The climate in many parts of the Western US is characterized by cold, wet winters preceding long, dry summers. In the absence of precipitation, water supplies in these regions are sustained by melting snow and mountain groundwater. Changes in regional climate can reduce snow accumulation, accelerate melt, and prolong dry periods, all increasing the importance of groundwater on summertime water availability. In mountainous regions with limestone and dolomite geology, bedrock formations can host significant karst aquifers comprising dissolution-enhanced karst conduits which play an outsized and variable role in how precipitation is translated into streamflow. In this study, we considered an …

Examining Geographic Variations In Disaster Preparedness Across The United States And Puerto Rico, Forest Kane Cook

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Disaster events, such as floods, wildfires, and earthquakes increasingly cause damage to livelihoods, the economy, and the environment. Preparing for these events to occur is an important part of increasing resilience, however studies have found that households are generally not prepared for these events to happen. When it comes to identifying where these households are, there is typically no related tool or series of maps that can indicate location. In order to fill this gap, we use public survey data from FEMA to create estimates of household preparedness across a number of actions, such as developing an evacuation plan or …

Shame-Proneness And Sexual Satisfaction Among Conservatively Religious Sexual Minorities, Sydney A. Sorrell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study examined how various aspects of religiousness and sexuality were related to sexual satisfaction among conservatively religious sexual minorities and explored whether dispositional proneness to feeling shame changed these relationships. Analysis of survey data from 315 current and former members of the Church of Jesus Christ of Latter-day Saints revealed numerous factors that were related to sexual satisfaction. Sexual minorities who attended more religious services and who were more religiously committed were less sexually satisfied. This may be a result of the conflict a religious sexual minority individual experiences when engaging in same-sex sexual behavior due to stigmatizing religious …

The Latter-Day Saint Home As A Site Of Religious Transition, 1890–1930, Cathy Gilmore

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis examines religion as practiced in the Latter-day Saint home during a period of religious transition between 1890 and 1930. Using the family of June A. Bushman and Hyrum Smith as subjects, we examine how families managed the religious reforms of the Church of Jesus Christ of Latter-day Saints during this period. As individuals who came of age at the turn of the twentieth century, June and Hyrum’s lives intersected with their church’s transition from an isolated religion to a modern, American church.
Administrative modernization, priesthood reforms, reimagined family relationships, and other ecclesiastical changes came into tension with the …

Bipartisn Bills From Caucus Collaboration: Solutions To Polarized Or Non-Polarized Issues?, Kaitlin Holden

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This paper investigates whether caucus members pursue bipartisan collaboration on bills related to polarized or non-polarized policy issues. The aim is to determine whether caucuses may be used to pursue bipartisan solutions to major policy issues in an increasingly polarized political environment. I model the effect that the presence of a women’s caucus has on bipartisan collaboration in increasingly polarized legislatures, depending on whether a bill’s title contains words related to polarized issues and its overall sentiment. Findings indicate that bipartisan women may be more likely to collaborate on polarized bills then non-polarized bills in legislatures with a women’s caucus …

Comparison Of Crop Water Use Estimation Methodologies In Irrigated Crops, Laura Christiansen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As increasing drought events limit water resources available for irrigation, farmers and other water users are looking for ways to monitor how much water crops use over a growing season. The amount of water used by crops over time is the evapotranspiration (ET) rate. This study compares different methods for ET estimation to recommend methods to water users based on their accuracy, efficiency, and accessibility. Each method was used to estimate ET for sprinkler-irrigated corn and alfalfa fields in Modena, UT over the 2021 growing season. The Soil Moisture based ET (SMET) method was used to estimate ET based on …

Does Teacher Bias Increase Referral Of Blacks To Special Education For A Reading Disability?, Blade Wise Perry

Electronic Theses and Dissertations

Research shows that Black students are over-represented in special education for a reading disability based on the inaccuracy of teacher referrals. Teachers' accuracy in referring Black students to special education for a reading disability is not an extensively researched area. This study aims to determine if teachers' biases and attitudes toward Black students impacted their ability to accurately make a special education referral for a reading disability for this population of students. For this study, teachers completed a questionnaire, cultural competence self-assessment checklist, four vignettes, and a post-vignette question to determine if their personal biases and attitudes impacted their willingness …

The Effects Of Esports On Sport-Confidence And Imagery In Athletes, Kelton Mahon

Electronic Theses and Dissertations

With the growing popularity of esports, athletes may be able to experience potential cognitive and performance-related benefits as a result of watching others play esports. In the current study, student athletes were randomly assigned to watch a sport esport video or a control esport video and then completed measures of sport-confidence and imagery. It was predicted that participants in the sport esport video group would score higher than the control esport video group in the cognitive efficiency and resilience aspects of sport-confidence, as well as the cognitive general, motivational general-mastery, and motivational general-arousal domains of imagery. The overall results did …

The Role Of Microbiota-Biotransformed Bile Acid Metabolites On Campylobacter Jejuni- And Clostridium Perfringens-Infection, Ying Fu

Graduate Theses and Dissertations

Campylobacter jejuni (C. jejuni) and Clostridium perfringens (C. perfringens) are two leading pathogenic bacteria responsible for both human and animal diseases. In chapters Ⅱ to Ⅳ, I presented an overview of current knowledge on the role of immune response, microbiota, bile acids and their microbial metabolites on campylobacteriosis, and C. perfringens induced necrotic diseases.In chapter Ⅴ, I investigated effects of deoxycholic acid-modulated anaerobes (DCA-Anaero) on attenuating chicken transmission-exacerbated campylobacteriosis. SPF Il10-/- mice were gavaged with clindamycin for 7 days followed by infected with three C. jejuni strains, Cj-P0 (C. jejuni AR101), Cj-P1 (from chicken pre-infected with C. jejuni AR101), and …

Amino Acid Nutrition In Broiler Breeders, Jordan Weil

Graduate Theses and Dissertations

Amino acids (AA) are commonly referred to as the building blocks of protein due to their role in the synthesis of proteins. Considering these nutrients are involved in growth and metabolism, much emphasis is placed on determining the dietary requirements of amino acids. Therefore, an experiment was conducted to evaluate the amino acid requirements of performance parameters such as egg weights, egg production, egg mass, feed conversion ratios, and body weight gain in two age groups of broiler breeders. In this experiment, 648 Cobb 700 broiler breeder hens were placed in individual cages to determine the amino acid requirements of …