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Propagation Of Two Utah Native Plants: Ceanothus Velutinus And Cercocarpus Montanus, Asmita Paudel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Among various water conservative approaches, the use of native plants in landscape, such as Ceanothus velutinus (snowbrush ceanothus) and Cercocarpus montanus (alder-leaf mountain mahogany), is attractive. Efficient propagation methods are required to allow these native species to use in water-efficient landscaping. Sexual (seed) and asexual/vegetative (cuttings and micropropagation) propagation methods were evaluated.

Seeds of both C. velutinus and C. montanus were scarified and/or stratified and treated with gibberellic acid (GA₃) to break dormancy. The results showed hot water scarification and 2-3 months of stratification effectively broke the dormancy of C. velutinus seeds, and stratification for 2-3 months was …

Rewriting The Unwritten: Decorum As A Tool For Social Justice In Technical Communication, Jennifer L. Scucchi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

With the recent turn to social justice in Technical and Professional Communication (TPC), it is important to develop a variety of theories and methods that can address issues of power and oppression within TPC. Additionally, some of these theories and methods should work to engage resistant audiences and persuade them to not only be aware, but to also take meaningful action for change. Social justice efforts should also consider the intersectionality that occurs when multiple marginalizing factors intersect, compounding the experiences of oppression for those who fall into each unique category. In this dissertation, I present a theory and method …

Modulation Of P3 And The Late Positive Potential Erp Components By Standard Stimulus Restorativeness And Naturalness, Salif P. Mahamane

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Tests of attention restoration theory (ART) consistently support that exposure to restorative environments can replenish finite cognitive resources, needed to focus attention, from a depleted state. These environments are usually natural, but the dimensions of naturalness and restorativeness are not one and the same, and yet have not been empirically delineated. The restorative effect has been documented in children and adults. However, neuroscientists have barely begun to test for neural correlates of ART. In this dissertation, I employ electroencephalography (EEG) to record electrophysiological brain activity during an active visual oddball task to capture and analyze p3 elicitation and late positive …

Some Examples Of The Liouville Integrability Of The Banded Toda Flows, Zachary Youmans

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Toda lattice is a famous integrable system studied by Toda in the 1960s. One can study the Toda lattice using a matrix representation of the system. Previous results have shown that this matrix of dimension n with 1 band and n‚àí1 bands is Liouville integrable. In this paper, we lay the foundation for proving the general case of the Toda lattice, where we consider the matrix representation with dimension n and a partially filled lower triangular part. We call this the banded Toda flow. The main theorem is that the banded Toda flow up to dimension 10 is …

Perpetuating Peace: Context Versus Contents Of The Power-Sharing Agreements Between The Kdp And Puk Of The Kurdistan Region Of Iraq In 1992 And 1998, Brigitte E. Hugh

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In the mid-1990s the two Kurdish parties in Iraq—the Kurdistan Democratic Party (KDP) and the Patriotic Union of Kurdistan (PUK)—signed two power-sharing agreements, which had dramatically different results. The 1992 50-50 Agreement ended in conflict while the 1998 Washington Agreement ended in long-lasting peace.

I examine both the agreements and their surrounding context to identify what explains the success or failure of these two agreements in establishing long-lasting and cooperative peace. I find that the presence or absence of peace is due to both the language of the agreements and the context in which they were created. I demonstrate this …

Formation Control Using Vehicle Operational Envelopes And Behavior-Based Dual-Mode Model Predictive Control, Brian Merrell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis presents a control framework for formation control. Given an initial desired trajectory, a framework is presented to generate trajectories for each vehicle within the formation. When combined with an operational envelope, a designated area for each vehicle to maneuver, for each vehicle the multi-vehicle formation control problem can be redefined into a single vehicle problem. A single vehicle framework is presented to track the respective trajectory when possible, or stay near it when it passes through previously unknown obstacles. Arc-based motions are used to rapidly produce desirable robot controls while a trajectory tracking motion is used to ensure …

Examining The Effects Of Aspects Of Resiliency And Vulnerability On The Relationship Between Experiencing Microaggressions And Mental Health Among Persons Of Color, Amanda K. Blume

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Ethnic minorities experience discrimination frequently, especially a subtle form of discrimination called microaggressions-which are linked with poorer mental health. This study examined protective factors against microaggressions. In this study, responding to microaggressions actively (as opposed to ignoring the situation) was linked with better mental health. When use of active coping strategies was low, microaggressions were associated with lower self-esteem and higher depression and anxiety. Alternatively, when use of active coping styles was high, microaggressions were associated with higher self-esteem and less depression, anxiety, and drug use. Responding to microaggressions is a disengaged way (such as attempting to ignore or avoid …

Response Of Glyphosate-Resistant Alfalfa To Glyphosate Application In The Intermountain West, Logan Chet Loveland

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Glyphosate-resistant (GR) alfalfa (Medicago sativa L.) has been widely adopted in the Intermountain West United States, where alfalfa plays an important role in agriculture. Exceptional tolerance to glyphosate application has been a reported strength of this technology; however, growers have recently reported potential crop injury under certain environmental conditions. The purpose of this study was to document and characterize the injury, identify local conditions that may have contributed to crop injury, and determine best management practices for avoiding injury to GR alfalfa in the Intermountain West. The effects of glyphosate rate and application timing were investigated at 24 sites …

Are Effort And Helpfulness Ratings Of Session Activities Associated With Improved Outcomes In Web-Based Acceptance And Commitment Therapy (Act) For Caregivers?, Hannah R. Cragun

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Family caregivers for people with dementia are providing care for up to ten years because people with dementia are living longer. This role can be demanding because the person with dementia can have behavioral and psychological symptoms that can be stressful for the caregiver to witness and manage. Acceptance and Commitment Therapy (ACT) in its traditional face-to-face format has strong scientific support in helping caregivers to be less depressed and better cope with the stress associated with taking care of their loved one. However, because caregiving is a time-demanding role, caregivers can struggle with accessing face-to-face therapy, making online ACT …

Framing Climate Change In Local Context: Newspaper Coverage Of Climate Change In Three Mountain Towns In The Intermountain West Compared To National Coverage, Tyler J. Spradlin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Past research has focused on how journalists cover and frame the issue of climate change or global warming in mainly nationally circulated newspapers. This study compares and contrasts the framing of climate change between two nationally circulated newspapers, The New York Times and The Washington Post, and three intermountain west community newspapers, Jackson Hole News & Guide in Jackson Hole, WY, Summit Daily in Summit County, CO, and Park Record in Park City, UT. This research incorporates the five generic frames, responsibility, conflict, human-interest, economic consequences, and morality frames defined by Semetko and Valkenburg (2000) …

Protecting Crops From Abiotic Stress: Copper Oxide Nanoparticle Effects On Wheat And A Beneficial Rhizobacterium, Matthew Potter

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Nanoparticles (NPs) are defined as particles less than 100 nm in at least one dimension. CuO NPs have possible applications in agriculture as micronutrient sources, pesticides, and enhancers of crop stress tolerance. Here, three aspects of CuO NP agricultural applications are studied: 1) the potential of CuO NPs to prevent wheat lodging-when crops irreversibly fall over; 2) CuO NP-induced drought tolerance in wheat seedlings; and 3) the effects of CuO NPs on outer membrane vesicle (OMV) production by Pseudomonas chlororaphis O6 (PcO6), a plant-health promoting bacterium.

Wheat grown 7 d exposed to CuO NPs in the growth matrix …

Cultural And Contextual Influences On Mental Health, Stigma, And Substance Use Among Mena U.S. College Students, Molly Mechammil

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The aim of this dissertation was to investigate whether certain cultural and contextual factors influence Middle Eastern/North African (MENA) college students' mental health, alcohol/marijuana use, and experiences with mental health stigma and help seeking. Research with MENA college students is very limited, which leaves mental health providers with limited information on how to best support MENAs. MENAs report high rates of discrimination, and other research shows that many they may use religion as a way to cope with stressors such as discrimination. I examined whether religious coping might buffer the effects of discrimination on mental health outcomes. I also considered …

Solar Irradiance Prediction Using Xg-Boost With The Numerical Weather Forecast, Pratyusha Sai Kamarouthu

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

To defeat global warming, the world expects to look at renewable energy sources. Solar energy is one of the best renewable energy sources which causes no harm to the environment. As solar energy changes with atmospheric parameters like temperature, relative humidity, cloud coverage, dewpoint, sun position, day of the year, etc. It is difficult to understand its nature by science. Predicting solar irradiance which is directly proportional to solar energy using atmospheric parameters is the main goal of this work. Powerful artificial intelligence algorithms that won many coding competitions have been used to predict it. Using these methods and numerical …

Developing And Validating Stealth Assessments For An Educational Game To Assess Young Dual Language Immersion Learners' Reading Comprehension, Frederick J. Poole

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this multiple-paper dissertation is to design a digital game and stealth assessments within the game to assess young second language learners' Chinese reading proficiency. In Chapter 2 (Paper 1), I describe the game designed for this dissertation and how it was implemented in a dual language immersion classroom. This study found that the digital game and in-class implementation led to significant vocabulary and reading comprehension gains. Further, seven types of support that students needed while playing the game were identified. In Chapter 3 (Paper 2), I describe how educational data mining approaches, and more specifically, how data-driven …

A Translational Investigation Of Reinforced Behavioral Variability: Implications For Promoting Behavioral Variability In Individuals With Autism Spectrum Disorder, Ann Galizio

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Behavioral variability is sometimes adaptive and can be maintained by the delivery of reinforcement. Individuals with autism spectrum disorder (ASD) often show restricted and repetitive behaviors. Therefore, interventions to promote behavioral variability in individuals with ASD are needed. The present line of research was designed to inform such interventions by investigating reinforced behavioral variability from basic, applied, and translational perspectives. Each of these laboratory studies involved participants making sequences of well-defined responses, which were compared to previous responses. Responses that meet a variability contingency (i.e., were sufficiently different from previous responses) produced rewards. Studies 1 and 2 were basic experiments, …

Trisiloxane Surfactant Adjuvants In Pollen, Autumn Slade

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Chemicals are often added to agricultural pesticide mixes to help increase the efficiency of the field spray solution, and one of the main groups of chemicals used for this purpose are trisiloxane surfactants (TSSs). Normally TSSs are considered non-toxic, but recent studies have shown TSSs to have negative impacts on organisms like honey bees. Though TSSs have recently been found in environmental sources like water, pollen, and beeswax, little is known about how TSSs behave in the environment or affects active ingredients, like pesticides.

To help determine the environmental prevalence and fate of TSSs, several studies were performed. Pollen was …

Teaching Students To Communicate With The Precise Language Of Mathematics: A Focus On The Concept Of Function In Calculus Courses, Derrick S. Harkness

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The use of precise language is one of the defining characteristics of mathematics that is often missing in mathematics classrooms. This lack of precision results in poorly constructed concepts that limit comprehension of essential mathematical definitions and notation. One important concept that frequently lacks the precision required by mathematics is the concept of function. Functions are foundational in the study undergraduate mathematics and are essential to other areas of modern mathematics. Because of its pivotal role, the concept of function is given particular attention in the three articles that comprise this study.

A unit on functions that focuses on using …

Submerged And Floating Woody Debris-Blocking Sensitivity Of Labyrinth Weirs, Taylor Vaughn

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Accumulation of floating and submerged woody debris at flow control structures can result in reduced discharge efficiency (higher upstream head for a given weir discharge). Labyrinth weirs are more prone to debris blockage than less efficient control structures due to their ability to pass large amounts of flow with relatively small heads. Labyrinth weirs also have geometric properties that are more likely to prevent debris from passing over the weir than linear weirs.

A laboratory study was performed to evaluate the interaction between labyrinth weirs and debris sizes. The individual debris tests indicated that debris blockage probability is influenced by …

College Prescription Opioid Misuse: An Exploration Of Social Learning, Social Control, And Strain Theories, Julie Murray

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Prescription opioids, when used as medically intended, can be effective in pain management. However, the consequences and costs of widespread misuse of prescription opioids in the United States are cause for concern. Prescription opioids are related to increased risk of death and injury. Young adults, between the ages of 18 and 25, have the highest rates of misuse nationally and within this age group, college students may be particularly at risk. In order to effectively curb the growing misuse of prescription opioids within college populations, we must have a better understanding of the factors that potentially lead to misuse.

This …

A Brief Online Acceptance And Commitment Training For Enhancing Outcomes Of A Cultural Competence Intervention, Elizabeth Tish Hicks

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In an increasingly diverse and multicultural society, there is a pressing and practical need for interventions to help professionals improve their cultural competence. Cultural competence trainings that target psychological flexibility in addition to knowledge, awareness, and skills may produce more efficacious results. The current study will examined the utility of targeting psychological flexibility (the ability to maintain contact the present moment and current internal experiences and to choose contextually appropriate, values-consistent behaviors, regardless of what one’s internal experiences are) as a process to enhance the impact of a cultural competence intervention with an Acceptance and Commitment Training (ACT)-enhanced cultural competence …

Advancing Water Resources Systems Modeling Cyberinfrastructure To Enable Systematic Data Analysis, Modeling, And Comparisons, Adel Mohammad Kheir Abdallah

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Water resources systems models aid in managing water resources holistically considering water, economic, energy, and environmental needs, among others. Developing such models require data that represent a water system’s physical and operational characteristics such as inflows, demands, reservoir storage, and release rules. However, such data is stored and described in different formats, metadata, and terminology. Therefore, Existing tools to store, query, and visualize modeling data are model, location, and dataset-specific, and developing such tools is time-consuming and requires programming experience. This dissertation presents an architecture and three software tools to enable researchers to more readily and consistently prepare and reuse …

Boron In The Pariette Wetlands, Uinta Basin, Ut, Palak Vasudeva

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Boron is a naturally occurring mineral in shale and coal beds formed in marine environments, as found in the Uinta Basin. Mining activity and the application of excess irrigation water on agricultural lands in the Pariette watershed lead to mobilization of B via surface run off. Water quality monitoring records from 2006- 2009 reported violations of Utah B standard for irrigation water 43-100% of the time, for water flowing through the Pariette Wetlands. This study aims to determine B distribution in abiotic (water, sediments) and biotic samples (macroinvertebrates, aquatic vegetation, fish, bird eggs), and to establish correlations between B concentrations …

Architecture Of Engagement: Autonomy-Supportive Leadership For Instructional Improvement, Travis N. Thurston

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This multiple paper dissertation addresses the importance of improving student success in online higher education programs by providing support for instructors. The autonomy-supportive structures to improve instructional practice are explained through three main domains, including instructional development, instructional design, and instructional practice. The first paper addresses instructional leadership with the theoretical foundations and practical considerations necessary for instructional leaders. Recommendations are made to use microcredentials or digital badges to scaffold programming using self-determination theory. The second paper addresses the importance of instructional design in improving instructional practice including the intentionality involved in implementing a gamification strategy to improve online student …

Psychosocial Effects Of Shared Book Reading, Amy Halling

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Many studies have examined the academic benefits of parents reading with their children, but few studies have looked at the psychological and social benefits, and even fewer have related the quality of shared book reading to psycho-social benefits. This study looked at whether positive and negative reading interactions during shared book reading predicted parent-child relationships, child social skills and child academic skills. Twenty-five parents of 4-year-olds read a story with their child and completed parent relationship and child social skills questionnaires. The reading interactions were then coded into two separate composite scores: positive and negative. Positive interactions did not significantly …

Effect Of Plant Derived Tannins On Nitrogen And Carbon Cycling In Pasture Soils, Kathryn A. Slebodnik

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Pasture-finished beef has become increasingly popular, but nitrogen losses from these pastures are of concern. Legumes containing condensed tannins such as birdsfoot trefoil (Lotus corniculatus) and sainfoin (Onobrychis viciifolia) may serve as environmentally and economically viable alternative forages in pasture finishing systems while reducing soil nitrogen loss. The goal of this project was to understand how tannin type and concentration affects soil nitrogen cycling both in the lab and the field. This thesis: 1) compared the physical, chemical, and biological characteristics of soil samples obtained from grazed grass and tannin and non-tannin containing legume pastures, 2) …

Gratitude In Adolescents: Examining The Role Of Attachment, Parental Gratitude, And Discounting, Savannah C. Rupp

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

From early childhood, parents often teach their children to use their manners by saying "Thank you"; however, are there any benefits from experiencing gratitude during youth? Understanding the relationship between gratitude and other areas, such as happiness and decision-making, can potentially help researchers in planning interventions for youth. The purpose of this study was to determine the relationship between gratitude and decision-making in youth, as well as the role of maternal gratitude and the mother-child attachment in determining gratitude in youth. Two hundred four participants (102 mothers, 102 adolescents) completed an online survey. Mothers and adolescents completed two gratitude questionnaires …

Novel Three-Dimensional Scaffold For Skeletal Muscle Tissue, Matthew H. Clegg

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Cells are traditionally grown on a flat, plastic surface that has been optimized for cell attachment. While this is appropriate for growing and maintaining cells, this two-dimensional cell culture model is not an adequate representation of a three-dimensional body. Creating three-dimensional lab models is an important step to model diseases and damage to the skeletal muscle system.

To create this three-dimensional environment, a plastic frame was designed to support silkworm fibers. Skeletal muscle cells were then grown along the silkworm fibers and the growth of these cells in a three-dimensional environment was compared to cells grown on a flat, two-dimensional …

Benchmarking Of A Mobile Phone Particle Image Velocimetry System, David Armijo

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

One of the most important tools in a fluid dynamics laboratory is a particle image velocimetry (PIV) system. This system can measure the speed of a fluid flow simply by taking high-speed images of the motion of the fluid, then applying PIV cross-correlation software to calculate speed from the resulting images. The mI-PIV project is in the process of designing a new method of performing PIV by putting the cross-correlation software on a mobile phone application, called mobile Instructional PIV (mI-PIV). This system is an innovative stepping stone in making PIV systems more widely available. It is designed to be …

Evaluating The Hydraulic Performance Of Digital Photogrammetry-Derived 3-Dimensional Models Of A Hydraulic Structure Using Computational Fluid Dynamics, Tyler J. Ashby

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This research investigated the combination of aerial imagery, photogrammetry, and computational fluid dynamics (CFD). Two 3D models of an 8-ft ramp flume were developed from aerial imagery using a commercial photogrammetry software. The GCP model was developed using ground control points (GCP) to improve and measure the model's accuracy. The Non-GCP model used GCPs as check points, which only measure the model's accuracy. The horizontal and vertical errors were, respectively, 0.39 in. and 0.73 in. for the GCP model, and 5.37 in. and 2.80 in. for the Non-GCP model.

In addition to the GCP and Non-GCP models, two hybrid 3D …

Thermal Modeling And Analysis Of Roadway Embedded Wireless Power Transfer Modules, Arden N. Barnes

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Wireless charging of electric vehicles is a developing technology which potentially increases efficiency and safety. It also allows for charging vehicles while they are moving by having charging stations embedded in the roadway. Because roadways are thermally insulating, it is important to know how the heat from the charging stations will move through the roadway, which will allow further research into whether the heat will cause damage to the components in the station or to the roadway. This thesis studies the way the heat moves through concrete with wireless charging coils embedded in it. This is accomplished by measuring the …