Digital Commons Network^™

Assessing Stream Ecosystem Structure And Function In An Urban Canal And Logan River In Logan, Utah, Ellie Smith-Eskridge

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Humans have constructed canals to support agriculture, to mitigate flooding, and to discharge stormwater, especially in the Intermountain West. These canals are common in Cache Valley, where they receive flows from the Logan River during summer months. However, the ecological structure (e.g., water quality, freshwater invertebrates) and function (e.g., leaf decomposition) of these canals remains largely unknown. Studying ecosystem structure and function of these urban waterways is important because it can inform us of the health of these waterways.

My research had three objectives. First, I compared water chemistry, invertebrate assemblages, and leaf decomposition in an urban canal and the …

Understanding Parent-Adolescent Transmission Of Values, Jesse P. Higgins

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this dissertation was to better understand the way that parents attempt to influence the values that may influence their adolescent children’s behavior and goals. In the first study, we use a newly created questionnaire, the Transmission of Values Scale or TVS, that measures the use of 27 parenting strategies that influence value transmission. Examples of strategies included in the TVS include being an example of good values, encouraging family discussion about values, and even using coercive strategies like guilt to encourage valued behavior. The results of this study found that these strategies work together to explain how …

Establishment Of A Transgenic Human Angiotensin Converting Enzyme-2 Hamster Infection Model For The Evaluation Of Therapeutics Against Severe Acute Respiratory Syndrome Coronavirus 2, Scott A. Gibson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The virus SARS-CoV-2 emerged in late 2019 and has gone on to spread throughout the global population. The virus is still the cause of a healthcare crisis two years after being identified. Viral infection in humans leads to the development of the disease COVID-19. A complex disease that can result in a wide variety of outcomes for infected individuals. In the majority of individuals, COVID-19 will manifest as either an asymptomatic disease state or a mild to moderate disease state that is resolved in approximately one week. In some infected patients COVID-19 will manifest with the rapid onset of severe …

A Generative Neural Network For Discovering Near Optimaldynamic Inductive Power Transfer Systems, Md Shain Shahid Chowdhury Oni

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An urgent need is to electrify transportation to lower carbon emissions into the atmosphere. Wireless charging makes electrical vehicles (EVs) more convenient and cheaper because energy is transferred to the vehicle without the need to plug it in. Dynamic wireless charging is particularly interesting, where the vehicle does not need to stop to receive the energy. This technology requires the EV and the roadway to include coils of wire, where the roadway coil is energized as the vehicle passes over it to induce an electrical current in the EV coil through electromagnetic induction. However, the problem of designing the two …

County Characteristics And Opioid Mortality Rates In The United States, Baksun Sung

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Opioid overdose deaths are not equally distributed across the United States. While some areas have a less severe problem with opioid abuse, others face serious challenges, which are affected by various social factors. To address that question, in Chapter 1, I investigate how opioid mortality trends differ according to opioid types, race, and region to identify susceptible populations and areas. In Chapter 1, I contend that synthetic opioid is a main trigger for the current opioid epidemic and that the epidemic is concentrated among blacks and in the Eastern United States. Next, the following studies examine how varying social vulnerabilities …

Cross-Boundary Stewardship In Protected Area Centered Ecosystems: Perceptions Of Success And Characteristics Of Cooperative Engagement, Ryan D. Tarver

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The legal boundaries of protected areas, such as national parks are established and enforced by humans. Therefore, jurisdictional boundaries are ultimately have human meaning but not necessarily ecological relevance as natural phenomena such as watersheds and wildlife habitat often extend beyond a jurisdictional boundary. When considering the extent of natural system, we find that protected areas only make up part of a given ecosystem. The result is a large expanse of lands that fall under a various ownership types that include both publicly and privately designated tracts of land. This presents a management challenge when attempting to manage at the …

An Exploration Of Issues Facing Vertiport Integration In The Wasatch Front, Katelynn Hall

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Uncrewed Aerial Systems (UAS) are expected to fill our skies to provide services such as package delivery, supporting emergency services, and even as a new mode of transit. While the private sector has been developing UAS for many years, the planning realm has not considered this new technology’s potential impacts on our communities in any depth. A primary aspect of UAS integration is the development of vertiports, which facilitate ground-based interaction with UAS. These centers, unlike traditional aerial infrastructure, must be dispersed throughout communities to support UAS integration. This thesis aims to involve planning professions in UAS integration by identifying …

How Preservice Teachers Develop Awareness And Beliefs About Design Features And Academic Language Features When Choosing And Evaluating Digital Math Games For English Language Learners, Allison L. Roxburgh

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This mixed methods study examined how preservice teachers developed awareness and beliefs about design features and academic language features when choosing and evaluating digital math games for English language learners. The overarching research question for this study was, “How do preservice teachers develop awareness and beliefs about design features and academic language features when choosing and evaluating digital math games for English language learners (ELLs)?” During the study, 21 elementary preservice teachers participated in online learning modules about design features and academic language features in digital math games. During the modules, preservice teachers chose and evaluated three digital math games …

Effect Of Increasing Levels Of Gossypol And Fatty Acids Coming From Whole Cottonseed On Rumen Fermentation, Nutrient Digestibility And Microbial Community Composition In Continuous Culture Fermenters, Camila Castro Veloz

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In this study we determined the impact of increasing dietary whole cottonseed (WCS) on rumen fermentation, nutrient digestibility, and microbial community composition. This study contributes novel information to the dairy community deepening the understanding of how including different levels of WCS can affect the rumen environment. This research was conducted in continuous culture fermenters. Treatments included a control diet without WCS, or the control diet plus 5, 10, or 15% (dry matter) WCS. The control diet was a 50:50 orchardgrass hay:concentrate mixture fed twice daily. In the second experiment, soybean meal and cottonseed meal (CSM) were included, and rations were …

Exploring The Process Of Mindful Breathing With Stressed Mothers, Caleb D. Farley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Mindfulness exists in many parenting and family interventions and are intended to decrease stress, improve familial relationships, and indirectly improve child wellness, and these mindfulness-based interventions (MBI) are relatively effective at doing so. However, critical issues remain related to designing effective and useful interventions for school-based and other community practitioners. Specifically, research has not demonstrated clear relationships between parent mindfulness practice increasing generalized mindfulness behaviors (i.e., awareness and acceptance), experiencing subsequent parental stress reduction, and reporting decreased behavior problems in children. The current study examined these relationships between practicing mindfulness and experiencing changes in parents’ mindfulness process, wellbeing, and perceptions …

Evapotranspiration And Energy Balance Of Irrigated Urban Turfgrass, Matthew D. Miksch

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Water usage for irrigation is a big consumer of water resources in urban areas in Utah and other parts of the Intermountain Region of the Western United States. As populations continue to increase in these states, it is important to understand how much water is being used by urban landscapes in order to plan and manage future water resources. Evapotranspiration (ET), or the amount of water leaving a surface over a certain timeframe due to both transpiration from plants and evaporation from the soil, is a key variable in understanding how much water urban landscapes are really using to grow …

The Active Cryocubesat Technology: Active Thermal Control For Small Satellites, Lucas S. Anderson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Modern CubeSats and Small Satellites have advanced in capability to tackle science and technology missions that would usually be reserved for more traditional, large satellites. However, this rapid growth in capability is only possible through the fast-to-production, low-cost, and advanced technology approach used by modern small satellite engineers. Advanced technologies in power generation, energy storage, and high-power density electronics have naturally led to a thermal bottleneck, where CubeSats and Small Satellites can generate more power than they can easily reject. The Active CryoCubeSat (ACCS) is an advanced active thermal control technology (ATC) for Small Satellites and CubeSats, which hopes to …

The Relation Between Racial Attitudes And Facets Of Impulsivity, Diana M. Perez

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Racism is an ongoing issue in U.S. society. The present study examined the relation between racial attitudes and two types of impulsivity (i.e., behavioral inhibition and delay discounting). Prior research has not touched upon the relationship between impulsivity and racial bias; nonetheless, the factors that influence the ability to interfere with automatic thinking and bad decision making may be a way to address racial bias. One hundred eighty-seven White adult participants were recruited from Amazon Mechanical Turk (MTurk), an online survey taking website. The value participants place on future rewards (i.e., delay discounting) and the ability to stop their behavior …

The Barriers To Movement: The Effects Of Anthropogenic Linear Features On The Space-Use Behaviors Of Mule Deer And Pronghorn In Utah, Ronan B. Hart

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Human development of structures like roads, fences, and other linear features can make it difficult for animals to move around their environment, affecting their ability to find food and avoid danger. Animal movement and the way they use space comes about from their responses to their surroundings and their choices to balance risk and reward. Because of this, we can understand how roads and fences affect wildlife by studying the way they move around their habitats. In this thesis, I focused on two large herbivores, mule deer and pronghorn, and studied how they use the space within Utah, United States …

Getting The Dirt On Phosphorus Pollution In Mountain Lakes: Are Rising Soil Temperatures Contributing To Eutrophication In Mountain Watersheds?, Gordon O. Gianniny

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Mountain watersheds provide a critical supply of clean water to millions of people around the world. In recent years, evidence of a concerning trend has emerged in these watersheds: rising phosphorus (P) concentrations. P often acts as the limiting nutrient in mountain lake ecosystems, so increasing P availability in mountain lakes and streams has the potential to drastically increase algal growth in these systems. In extreme cases, increasing mountain lake P concentrations may even cause harmful algal blooms that degrade downstream water quality. While the implications of rising P concentrations in mountain lakes are serious, the cause driving this widespread …

The Concept Of Multicenter Bonds In Chemistry And Materials Science, Nikolay V. Tkachenko

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Chemical bonds are components of a universal and compact language of chemistry that was empirically developed before the modern concepts of quantum physics. This language explains how molecules and solids keep together. In particular, Lewis’s shared electron-pair bonding model may be considered the most successful and generally accepted theory of chemical bonding due to its simplicity and predictive power. However, there is an entire world of chemical species where the classical Lewis bonding language fails to describe the bonding pattern adequately. Those cases include but are not limited to compounds with a significant electron delocalization (where electron density spread on …

Examining Political Discourse On Online 8kun And Reddit Forums, Braden Mindrum

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A recent example of political violence in the United States was that of the January 6, 2021, Capitol attack in connection with the certification of Joseph R. Biden’s victory over Donald J. Trump in the 2020 US presidential election. This thesis analyzes the events of January 6, 2021, through the lens of social media discourse. This thesis presents a workflow that acquired over 5 million 8kun and Reddit posts from various apolitical and political forums in the three months preceding and following the Capitol attack on January 6, 2021. Techniques from text analysis are then used to group forums according …

Connections Between Mathematics And Computational Thinking: Kindergarten Students' Demonstration Of Mathematics Knowledge In A Computational Thinking Assessment, Lise E. Welch Bond

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Research shows that computational thinking can be used with kindergarten mathematics instruction, however we still do not know much about how specific math knowledge is related to computational thinking and if (and if so, how) children's mathematical knowledge is related to students' performance on computational thinking assessments. This student fills this knowledge gap by examining the following research questions: (1) How are kindergarten students' mathematical knowledge (MK) and computational thinking (CT)MK and CT operationalized during a CT assessment? In what ways, if any, do MK and CT co-occur, and (2) How do students' mathematical knowledge and co-occurring mathematical knowledge and …

Groundwater-Surface Water Interaction To Increase Groundwater Availability, Saeid Masoudiashtiani

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study develops procedures for using surface water to increase groundwater availability and sustainable yield, and for evaluating impacts on surface water. Increasing sustainable groundwater yield requires reducing the gap between the volumes of discharge from versus recharge to an aquifer. The study presents procedure for water user(s) to help increase groundwater availability. Toward that end, this study simulates and evaluates: a) aquifer storage and recovery (ASR) of water diverted from Red Butte Creek in Salt Lake Valley, Utah for subsequent turf irrigation; b) ASR injection of residential runoff from daily rainfall for subsequent extraction to irrigate turf; and c) …

Practical Improvements For Pivot And Surface Irrigation, Jonathan A. Holt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Irrigation is critical to meeting global food and fiber demands. Optimizing agricultural irrigation may help sustain production levels, while reducing its demand for water. This research evaluated precision sprinklers and drip irrigation for pivots, five pivot track mitigation tools, three scientific irrigation scheduling (SIS) methods, sensors for surface irrigation cutoff, and automating surface systems to implement surge irrigation. With pivots and surface irrigation being the most common methods for irrigation in the West, small improvements from these tools could result in significant water savings.

Low energy precision application (LEPA) sprinklers and mobile drip irrigation (MDI) were tested on two pivots. …

Regeneration Of Quaking Aspen And Understory Vegetation Change After Fire Risk Reduction Treatment, Allison M. Trudgeon

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Quaking aspen (Populus tremuloides Michx.) is a keystone species that, when coexisting with conifers (i.e., seral aspen), often undergoes stand-replacing disturbances to sustain long term vigor. Historically, mixed-to-high severity fire reduced fuels and regenerated aspen, but such disturbances have become less common in recent decades. This has often led to high fuel loading, and many seral aspen stands are at now risk of an unpredictable, high-severity fire, posing a threat to development in the wildland-urban-interface. The lack of a commercial market for aspen, and the risk of conducting prescribed fire, means there are few alternate management options. This has …

Laboratory Modelling Of The Various Components Of Backward Erosion Piping Behavior Due To Converging Flow With Different Constricted Outlets, Ibrahim Ahmed Abdelmotelb Ibrahim

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Backward Erosion Piping (BEP) is an internal erosion mechanism which occurs at the down stream of dams or levees. Two conditions needed for this failure to occur: 1) head of water in the upstream of the dam or the levee to drive the seepage forces, and 2) crack in the roof or the blanket layer of the cohesionless material in the downstream of the dam or a levee. Numerous researches were performed in the past in an attempt to predict the critical gradient for BEP to initiate. Some researches are too conservative and other researches are under predicting the critical …

The Body Seeking Magnificence, Taylor Franson Thiel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis focuses on how my time as a college athlete, my relationship with my mother, and my experience of an abusive relationship have intersected to impact my personal relationship with my body as I have fluctuated between trying to make it perfect, trying to ruin it, and trying to love it. The collection of poems examines how these forces collided in various ways to change how I thought about myself and my identity. After dealing with the idealized version of what a college athlete should look like and act like, inherited trauma from a mother, and trauma from a …

Teachers’ Learning Of Fraction Division With Area Models, Michael Leitch

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Research shows that fractions concepts play an essential role in the learning of later mathematics. However, fractions are notoriously difficult to learn and difficult to teach. Division with fractions is a frequent subject in mathematics education research because division is the most conceptually difficult of the four basic arithmetic operations and rational numbers are the most conceptually difficult numbers in K-12 mathematics curricula.

In the U.S., teachers are generally proficient with mathematical procedures, but often have difficulty explaining the concepts underlying the procedures. Research indicates a positive association between student learning and teachers’ depth of conceptual understanding of mathematics. Thus, …

Physical Model Of Rainwater Along Roadway Filter Strip, Ryan C. Eberhard

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this research was to investigate infiltration rates of rainwater into a roadside filter strip. The findings of this study were intended to be used by the Utah Department of Transportation in their design of stormwater retention. A testing apparatus was designed and constructed to simulate rainfall and infiltration on an inclined slope during the 80^th percentile 24-hour rainstorm event in Utah. The model was used to test six different surface soil configurations at three slope inclinations. Each test was subjected to a simulated storm event of ½ inch of rain over a 2-hour period. The variation …

A Frobenius-Schur Extension For Real Projective Representation, Levi Gagnon‐Ririe

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Many problems in physics have explicit mathematical descriptions. This thesis aims to provide the mathematical tools for a particular problem in physics, that of Quantum Mechanical symmetries. In essence, we extend the known mathematics to a more general setting and provide a wider view of Real projective representation theory. The work done in this thesis contributes to the subfield of mathematics known as representation theory and to the subfield of physics concerned with time reversal symmetry.

From Mountain Streams To Urban Rivers: An Assessment Of Microplastic Sources And Characteristics, Macy Gustavus

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Plastic products are produced and discarded at an alarming rate. Bottles, bags, toys, and clothing break down into tiny plastic pieces called microplastics, ranging in size from an eraser on the top of a pencil to smaller in size than a red blood cell. Microplastics are becoming so common in the environment that they travel in the atmosphere, rivers, and ocean currents in ways that are similar to other types of Earth Systems Cycles (i.e., the water cycle). In this study, we explored microplastic sources and sinks in a freshwater river system and how seasonal changes in discharge affect how …

Board Certified Behavior Analysts In Public Schools: Challenges And Opportunities, Danielle Lyons

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Board Certified Behavior Analysts (BCBAs) can play an important role in schools. The purpose of this study was to survey BCBAs who self-identify as working in public schools in effort to learn more about their experiences working in this setting. This paper is meant to spark further discussion and research on how BCBAs can be more effective in schools through training and supervision, collaborating with school administrators on systems-level concerns, resolving ethical concerns, and clarifying roles and responsibilities in public schools.

A Fine-Scale Understanding Of Sagebrush Islands To Improve Restoration Outcomes In The Intermountain West, Sofia Koutzoukis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In the Intermountain West, rapid expansion of non-native grasses, primarily cheatgrass, has created a repeating cycle where cheatgrass easily ignites and after a fire, more cheatgrass establishes in the burned area, leading to more fire, and more cheatgrass. The primary method to prevent further fires is to plant grass and shrub seeds after a fire because they can deter cheatgrass from establishing and reduce the chance of fire. However, this approach does not always work. There is a need and interest in alternative ways to establish native grasses and forbs.

Sagebrush, the dominant shrub of lower-elevation regions of the Intermountain …

Dynamic Inductive Power Transfer Systems With Reflexive Tuning Networks Designed By Machine Learning, Shuntaro Inoue

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This dissertation proposes a new way to make dynamic wireless charging systems more affordable. Instead of using one inverter for each transmitter coil, as is typically done, the proposed system uses a single inverter that is connected to multiple transmitter coils. This approach is made possible by reflexive tuning, which allows for high currents to be achieved only on the transmitter coil in use. The system was tested with a 50kW prototype, designed using a combination of neural networks and genetic algorithms. The prototype was tested on both automated rail and vehicle systems. The measured dc-dc efficiency with single and …