Digital Commons Network^™

Improved Sustainability And Efficiency Of Partial Depth Concrete Bridge Deck Repair, Israi I. H. Abu Shanab

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Recently, significant advances have been made in the development of rapid setting cementitious materials for partial depth bridge deck repair. The rapid set times of these materials allow for traffic to be re-opened onto the bridge deck in several hours versus days once the material has been placed. While this is a substantial improvement in reducing the traffic closure time, a large amount of time is still spent on the removal of damaged and deteriorated bridge deck and in preparing the concrete cutouts for placement of the rapid set material. Partial deck removal is a much more delicate process than …

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 …

Critical Democratic Education: A Case Study On Controversy Deliberation And Its Effects Among Pre-Service Elementary Teachers, Shouqing Si

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The state of democracy facing expanding political division and pervasive racial and social inequalities. Discussing and deliberating controversial social and political issues functions help foster students' civic contribution. I conducted a qualitative case study and recruited 14 participants, with whom I conducted interviews, self-reflection, observation, and autoethnography. I targeted the primary research question: How do pre-service elementary teachers experience and get influenced by discussing social and public issues? I broke it down to six operational questions:

1. What issues are considered controversial by pre-service teachers in their future social studies classrooms?
2. What challenges do pre-service teachers perceive in controversial issues teaching? …

Opportunities And Challenges For Cooperative Extension Becoming A Major Actor In Climate Change Mitigation And Adaptation, Dakoeta R. Pinto

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Addressing climate change in the United States is an increasingly complex issue that requires social and technological changes throughout the country, which the Cooperative Extension System (Extension) can influence. Based at land-grant universities, their goals are to bring relevant science and innovation to the people of the United States. For a successful low-carbon transition, there are certain elements of society that must be influenced by innovators like Extension. Extension’s historical roots in agriculture prevail today with most of their programming focusing on this sector. However, there is a movement within Extension to expand their programmatic efforts to address more contemporary …

We Travel Together: Examining The Drivers And Functions Of Animal Movement In Biotic Seed Dispersal, Binod Borah

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Plants and frugivorous animals exist in mutually beneficial relations, as these animals feed on fruits, ingest the seeds, and carry them away from the parent trees. Such dispersion of seeds over space helps them colonize new habitats, escape high mortality rates near their parent trees, and avoid competition with conspecifics. Therefore, seed dispersing animal movement can be critical for the persistence of plant populations. Yet what drives such seed disperser movement is often less understood and how it affects seed dispersal is little explored. In my dissertation, I investigate multiple drivers of seed disperser movement, link movement to potential seed …

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 …

Thermal Tolerance, Physiology, And Microhabitat Use Of Eleutherodactylus Coqui Across An Elevational Gradient In Hawai‘I, Jack Marchetti

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The coqui frog (Eleutherodactylus coqui) is an invasive species in Hawai‘i, and has spread across much of the island. While elevational temperature differences are thought to restrict the coqui’s spread, it is unclear if they have resulted in changes to the coqui’s physiology and microhabitat use as it has expanded into higher elevations.

We first sought to determine if the coqui’s substrate use and baseline physiology differs between elevations. We found that frogs at high elevation were found closer to the forest floor and used different substrates than frogs from low and mid-elevations. This change in microhabitat use …

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 Effects Of Recent Climate Change On Spring Phenology, With A Special Focus On Patterns Of Bee Foraging, Michael Stemkovski

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The date on which plants flower and on which bees begin to pollinate varies year-to-year depending on differences in weather. This seasonal timing is known as phenology, and it is already clear that climate change has pushed the spring phenology of many species earlier by increasing temperatures. This is particularly clear in flowering plants, but studying how and why the phenology of pollinators is shifting is more difficult. Most flowering plants rely on pollinators such as bees for their reproduction, and most bees rely on flowers for their sustenance, so bee and flower phenology has to overlap for the crucial …

Low-Erosion Nozzle Materials For Long-Duration Hybrid Rocket Burns, Russell S. Babb

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Hybrid rocket systems, which employ a solid fuel grain and a liquid oxidizer, are a low-cost and environmentally friendly alternative to traditional rocket systems. However, hybrid rockets suffer from an increased nozzle throat erosion rate, which impacts motor performance and reliability. To address this issue several materials and low-erosion nozzle configurations were tested. The results of the testing campaign produced a nozzle that reduce the throat erosion rate five-fold.

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 …

Augmented State Linear Covariance Applications For Nonlinear Missile Engagements, Jeffrey Scott Clawson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Sustained actuator saturation is a common occurrence for missile engagements. The saturation nonlinearity creates some difficulty for high-fidelity linear analysis methods. This dissertation investigates three methods of modeling actuator saturation in an advanced linear analysis. The linear covariance tools from this dissertation run extremely fast and provide several advantages over other linear missile engagement analysis methods. First, a simulation is developed and validated for a target engagement scenario without actuator saturation. Next, saturations are introduced to the problem, along with the first analysis method: statistical linear covariance analysis. This method combines the augmented state linear covariance framework with the statistical …

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 …

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 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 …

Student Perceptions Of Male And Female Instructors In A Post-Secondary Welding Course, S. Kjersti R. Decker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Agricultural mechanics and welding have traditionally been perceived to be careers reserved for males, yet more females have entered professions using welding such as agricultural education. This research was developed because of the lack of gender research in welding. The purpose of this study was to examine students’ perceptions of learning from a male instructor versus a female instructor in a post-secondary welding course. We examined associations and differences between students’ preference of a male and a female welding instructor as well as individual self-efficacy and perceptions towards using welding technology. The population for this study was undergraduate students and …

Fish Community Impacts And Conservation Implications Of A Novel Barrier On The San Juan River, Utah, Zachary T. Ahrens

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Stream fragmentation and non-native species introductions are among a suite of anthropogenic disturbances shaping the structure and function of freshwater ecosystems. The impacts of such alterations contribute to the global decline of stream fish biodiversity and may be synergistic in their effects. For example, the Colorado River basin’s unique native fish assemblage is imperiled not only by numerous dams and diversions, but also by threats of predation and competition for limited resources from non-native fish species. On the San Juan River, Utah, a recently formed fish barrier prevents upstream movement of native and non-native fish. The goal of this project …

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 …

Habitat Selection By Desert Carnivores: How Water, Intraguild Predation, And Prey Impact Animal Space Use, Nadine A. Pershyn

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Across North America large carnivores have lost nearly half of their historic range, creating openings for smaller (< 15 kg) carnivores to take over their ecological roles. Coyotes (Canis latrans) have seen a significant range expansion, including into arid deserts. It was believed that the addition of artificial water sources by humans allowed coyotes to expand into desert ecosystems where they were previously unable to survive. The kit fox (Vulpes macrotis) is a small, desert-adapted carnivore with declining populations that faces threats from coyotes of intraguild predation. This is when carnivores compete over the same prey, and the larger carnivore (intraguild predator) kills the smaller carnivore (intraguild …

A Mixed-Methods Study Investigating How A Video Club Professional Development Relates To Teachers' Mindsets, Beliefs, And Reflections On Instructional Practices, Amy Lynn Kinder

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

One of the most significant barriers to changing instructional practices is often the teacher's mindsets and beliefs about teaching and learning mathematics. This study identifies a promising new type of video club professional development that supports teachers in examining their instructional practices and mindsets. This is an important addition to the field due to educators and researchers are just beginning to understand more about how mindset mediates and filters belief systems that impact how instruction is implemented. The purpose of this convergent parallel mixed-methods study is to provide a deeper understanding of how the experience of engaging in video club …

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 …

Evaluating Methods For Pathogen Spillover Detection And Forecasting In Desert Bighorn Sheep (Ovis Canadensis Nelsoni), Grete E. Wilson-Henjum

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Managers mitigate the effects of disease on wildlife populations by detecting outbreaks and predicting disease transmission. Bighorn sheep (Ovis canadensis) populations face threat from the introduced pathogen Mycoplasma ovipneumoniae (M. ovipneumoniae). In the eastern Mojave Desert, managers detect pathogen outbreaks in desert bighorn (O. c. nelsoni) through aerial population surveys, which produce irregular and coarse population information. Furthermore, managers model the risk of M. ovipneumoniae transmission amongst desert bighorn populations, however these models assume that desert bighorn space use is unchanging across years. Here, I evaluate methods used by managers to detect disease outbreaks …

Toward A More Holistic Understanding Of Uranium-Related Views And Experiences Of Residents In The Four Corners Region Of The United States, Matthew J. Barnett

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Research on rural Four Corners Region (FCR) residents’ views about uranium production has focused mainly on predominately-White communities in the northern portion of the region. Meanwhile, residents in the southern part of the region, which includes the Navajo Nation and other tribal nations and communities, have dealt with the worst environmental and health effects of the uranium boom. Through a series of three studies in the southern part of the FCR, I explore the uranium-related views and experiences of racially diverse FCR residents.

In the first paper of this dissertation, I used 53 interviews to explore how sociodemographic factors (e.g., …

Tacitus, Barditus, And Odin's Eleventh Spell, Marie Skinner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Roman Historian Cornelius Tacitus wrote about native Europeans in 98 C.E., around a thousand years before the same peoples began recording their own history. Despite this, the work titled Germania is little-known and under-utilized. It is only by studying Germania and discussing it that the text will be seen for what it is and neither dismissed nor taken out of context. This thesis examines a few of the many passages of Germania that correspond with archaeological, literary, legal, and artistic information from later periods, demonstrating the value of Tacitus’ work to anyone studying European history.

Livestock Risk Protection: An Analysis Of Coverage Length And Level To Determine Optimal Contract Selection, Logan B. Haviland

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

We evaluate the historically optimal producer-selected coverage options comprised of coverage length and level for each marketing month for various types of livestock insured with Livestock Risk Protection insurance. We begin with feeder cattle steers (600-900lbs) and then analyze the other types of feeder cattle, followed by fed cattle and swine. The optimal contracts are identified as those that have historically provided the highest probability of a positive net return and the highest average net return. We find that regardless of marketing month, the optimal contracts consist of relatively high coverage levels whereas the optimal length of the contracts varies …

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 …