Digital Commons Network^™

Examining The Impact Of A Comprehensive School Physical Activity Program On High School Students' Health And Well-Being, Joshua Robinson

Doctorate in Kinesiology

This dissertation examined the impact of a Comprehensive School Physical Activity Program (CSPAP) on high school students’ perceived physical, mental, emotional, and academic wellness. Using a mixed-methods design, data were collected from 701 pre-surveys, 175 post-surveys, 603 post-intervention impact surveys, and two student focus group interviews. The yearlong CSPAP intervention was implemented using the CDC’s seven-step framework at a public charter high school during the 2024–2025 academic year. Quantitative results revealed statistically significant improvements in students’ self-reported physical health, mental wellness, emotional resilience, and academic engagement, with mental health and perceived enjoyment of physical activity showing the strongest gains. Perceived …

Experimental Investigation Of Photovoltaic Soiling Losses And Aerosol Absorption And Scattering Related To Dust In The Chihuahuan Desert Region, German Rodriguez Ortiz

Open Access Theses & Dissertations

This dissertation explores the interaction between mineral dust and solar radiation in the Chihuahuan Desert, one of the dustiest areas in North America. I focused on two main aspects: (1) the characterization of atmospheric aerosol optical properties during dust events, and (2) the effects of dust deposition (soiling) on the performance of photovoltaic (PV) modules. I characterized the intrinsic optical properties of aerosols in El Paso, Texas during the peak of the 2021 dust season. Ground-level, high-resolution optical and meteorological data were collected at the Black and Brown Carbon (BC^2) study site, whereas particulate matter and additional meteorological parameters were …

Model-Based Systems Engineering For Aerospace Applications: Strategic Requirements Prioritization In Complex Adaptive Systems And Digital Integration, Iqtiar Md Siddique

Open Access Theses & Dissertations

Ineffective systems engineering practices continue to jeopardize aerospace missions, resulting in multi-billion-dollar losses, delays, and fragmented development outcomes. As complexity intensifies and timelines shrink, conventional document-based methods increasingly fail to support early validation, cross-domain traceability, and synchronized tool usage. This research presents an integrated approach that addresses three critical gaps: synchronizing executable and traceable MBSE models across structural, behavioral, and requirements domains; applying scalable requirements prioritization techniques tailored for Complex Adaptive Systems; and establishing automated simulation feedback loops through digital toolchain integration. Central to this strategy is the Digital Trinity, which connects system models, simulations, and lifecycle data through a …

Examining The Development Of Collective Classroom Efficacy At The Secondary Level, Bradley K. Dutson

All Graduate Theses and Dissertations, Fall 2023 to Present

How can educators develop cohesive and productive learning communities at the secondary level? Prior research has investigated how classrooms develop collective classroom efficacy (CCE) or the shared belief that, as a classroom, they can achieve their learning goals together as a community. Previous studies suggest that CCE at the elementary level is developed with a teacher acting in the role of a community organizer. The teacher employs social and academic practices which incorporate the use of relevance, relationship, and responsibility. These help to establish four key elements of developing CCE which include: 1) a positive classroom environment, (2) persistence and …

Pressure Recovery Analysis Downstream Of Valves And Meters: An Experimental And Numerical Investigation, Stephen J. Sanders

All Graduate Theses and Dissertations, Fall 2023 to Present

In pressurized water systems, flow control devices such as valves and meters cause pressure losses that can affect energy efficiency and measurement accuracy. Industry standards assume that all devices recover within the same distance downstream, but this may not be true for all device types. In this study we used laboratory testing and computer modeling to determine how far downstream pressure stabilizes after flowing through various valves and meters. Devices like Venturi meters recovered pressure quickly, while orifice plates required longer distances and resulted in greater permanent energy loss. In most cases, pressure recovered within four to six pipe diameters. …

Linearized Rigid-Body Dynamics Of Asymmetric Aircraft, Troy A. Abraham

All Graduate Theses and Dissertations, Fall 2023 to Present

Most aircraft are symmetric about their mid-plane, which permits simplifying assumptions when modeling their aerodynamic and mass properties, as well as estimating their dynamic modes. This work considers methods for modeling asymmetric aircraft, including capturing the dynamic mode characteristics that result from their asymmetric properties. While the primary focus of this work is on the dynamic mode properties of these aircraft, a significant portion of the dissertation is dedicated to modeling their aerodynamic, mass, and trimmed flight characteristics. The linearized rigid-body aircraft equations of motion used for dynamic mode estimates are developed to include the effects of asymmetries in both …

The Validation Of The Patient’S Endorsement Of The Biopsychosocial Model Of Chronic Pain (Peb) Scale In Young Adults, Mathias M. Sanyer

All Graduate Theses and Dissertations, Fall 2023 to Present

This research examined a new tool designed to measure how patients view their chronic pain. While healthcare providers increasingly recognize that chronic pain involves biological, psychological, and social factors (a "biopsychosocial approach"), no previous tool existed to assess whether patients share this perspective. This study tested the reliability and effectiveness of the Patient's Endorsement of a Biopsychosocial Model of Chronic Pain (PEB) Scale in young adults with chronic pain. Results confirmed the scale accurately measures a single, consistent concept and correlates with patients' willingness to consider new pain management approaches. Unlike in older adults, the scale didn't predict active maintenance …

An Evaluation Of Interactive Computerized Training To Teach Preservice Speech Language Pathologists To Implement Brief Multiple Stimulus Without Replacement Preference Assessments, Mattie L. Mecham

All Graduate Theses and Dissertations, Fall 2023 to Present

Positive reinforcement is often used when teaching new skills. When working with individuals with developmental disabilities, it can be difficult to determine reinforcing items. Preference assessments can be used to identify items that may function as reinforcers. A multiple stimulus without replacement preference assessment (MSWO) produces a ranking of preferred items and can be conducted quickly. Researchers have utilized interactive computerized training (ICT) to teach behavior analytic skills and procedures. The present investigation aimed to extend previous MSWO training and ICT research by developing and evaluating the effects of an MSWO ICT implemented with speech language pathology graduate students. The …

Exploring Methods For Quantifying Uncertainty In Neural Network-Based Turbulence Closures, Cody Grogan

All Graduate Theses and Dissertations, Fall 2023 to Present

Machine Learning (ML) is a very promising field for data-driven modeling of different phenomena. In the field of Computational Fluid Dynamics (CFD), ML is an enticing alternative to traditional methods to improve the accuracy and computational efficiency of simulations. However, many ML models, like Neural Networks, don’t quantify their uncertainty or indicate their confidence in a prediction to those who wish to use them. This is especially important because the use of inaccurate ML predictions in a CFD simulation can greatly impact the validity of a simulation. However, with uncertainty quantification, an ML model can indicate to a modeler the …

Sustainable Planning In Gateway Natural Amenity Region Communities, Kori Ann Kurtzeborn

All Graduate Theses and Dissertations, Fall 2023 to Present

This study used six principles of sustainability to comprehensively score general plan documents from seven Gateway Natural Amenity Region (GNAR) communities. The goal was to investigate the sustainability values of communities with public land recreation access based on the understanding that individual participation in outdoor recreation positively influences environmental concern. The study found that while strong sustainability themes are present in gateway community general plan documents, these themes don’t necessarily correspond to higher overall sustainability scores. However, GNAR community plans prioritize the Harmony with Nature principle, indicating an emphasis on ecosystem health in communities with adjacent public land recreation.

Cultural Adaptation Of The Act Guide For Immigrant Community Members, José Manuel González Vera

All Graduate Theses and Dissertations, Fall 2023 to Present

Undocumented immigrants face many challenges that can harm their mental health, such as anti- immigrant policies, the threat of deportation, and difficulty accessing mental health care. Online mental health programs can make mental health care more accessible. The ACT Guide is a self-paced online tool designed to help with anxiety and depression. While it has mainly been used by white college students, similar ACT-based programs have been effective for diverse communities worldwide. The first paper was focused on gathering feedback from community members and Latine psychologists. This was done in partnership with United We Dream (UWD) and the Latinx Immigrant …

Evaluating Uplift At The Leading Edge Of The Yellowstone Hotspot - A Study Of The Shoshone River Drainage, Emma Tombaugh

All Graduate Theses and Dissertations, Fall 2023 to Present

The stationary mantle plume (or hotspot) underlying the Yellowstone region has caused parts of the surrounding landscape to rise as the continental plate migrates over it. However, scientists do not fully agree on the spatial pattern of this uplift and few measurements of the landscape have been made to provide estimates of uplift rates. To better understand uplift patterns and rates, this study examines the Shoshone River, which flows across the predicted zone of highest uplift at the northeastern, leading edge of the hotspot. Digital-terrain analysis is used to measure channel steepness and field and imagery approaches are used to …

Efficacy And Social Validity Of A Modified Good Behavior Game, Milad Najafichaghabouri

All Graduate Theses and Dissertations, Fall 2023 to Present

Teachers regularly face challenging behavior from students in their classrooms. Research shows that the good behavior game (GBG) is a strategy teachers can use in their classrooms to improve student behavior. However, in practice, very few teachers choose to use this strategy in their classrooms. One reason why teachers may not use this intervention regularly is that they find some parts of the intervention to be difficult to implement in the long-term. The purpose of this study was to modify the procedures of the GBG to reduce implementation effort for teachers and assess if the intervention continues to be effective. …

Evaluating The Effects Of 3d User Interactions And Virtual Displays On Human Cognition And Perception For Immersive Analytics, Dongyun Han

All Graduate Theses and Dissertations, Fall 2023 to Present

This research investigates how virtual reality (VR) can be utilized effectively for users to explore data. Traditional data analysis typically takes place on flat, two-dimensional computer screens. In contrast, immersive technologies like VR offer a three-dimensional environment where users can engage with data more naturally and intuitively. Such immersive experiences have the potential to improve comprehension, memory, and insight during data analysis tasks. Despite this potential, several challenges remain in making immersive analytics practical and effective. Key questions include which types of 3D interaction techniques are most helpful and how accurately people perceive visual information in immersive environments. To address …

A Provable Semi-Infinite Programming Approach For Solving Dynamic Nash Games, Tyler C. Gardner

All Graduate Theses and Dissertations, Fall 2023 to Present

Many engineering problems must account for the non-cooperative decisions and actions of multiple players. These problems can be modeled within a game-theoretic framework. The approach herein is to model problems as Nash games, convert them to semi-infinite programs, and leverage provable semi-infinite algorithms to solve the original problem. A particular algorithm that leverages off-the-shelf solvers is used to solve four low-dimensional benchmark problems successfully. Two types of linear quadratic dynamic games are then investigated: ones where each player’s problem is convex and ones where at least one player’s problem is nonconvex. Within each type, variations based on information structure, communication …

Improving Seasonal Precipitation Forecasts In The Western United States Through Statistical Downscaling, Bradley Vernon

All Graduate Theses and Dissertations, Fall 2023 to Present

Seasonal precipitation forecasts are essential tools for water management, especially in drought-prone areas like the Western United States. While global forecasting systems can predict precipitation months to years in advance, these forecasts are typically produced at a coarse spatial resolution due to high computational costs – especially when multiple forecast iterations, or ensemble members, are included. This coarse resolution limits their ability to capture localized weather features, such as those shaped by the complex terrain of the Intermountain West. Here, analog statistical downscaling is demonstrated as an effective approach to enhance the spatial resolution of operational seasonal forecasts provided by …

Empirical Evaluation Of Bayes Error Rate Bounds In Binary Classification, Riley May

All Graduate Theses and Dissertations, Fall 2023 to Present

Classification tasks are fundamental in statistical machine learning. In classification tasks, a general goal is to build or select a model that can correctly classify data with as few errors as possible. However, for a particular dataset, the minimal number of errors achievable is seldom zero since overlap in the data makes errors unavoidable. As a result, it is often difficult for machine learning practitioners and data scientists to know whether classification errors can be reduced through further refinement. A potential solution to this lies in the Bayes error rate (BER). The BER is the lowest error rate achievable for …

Alevi-Bektashi Ballads: Malady, Melody And Remedy, Mustafa Cingoz

All Graduate Theses and Dissertations, Fall 2023 to Present

This research focuses on how ballads play a central role in the cultural and spiritual life of the Alevi-Bektashi community in Türkiye. These ballads, performed by folk poets known as aşık (minstrel) with the stringed instrument bağlama are the inseparable elements of their daily life and sacred rituals. As rooted in the path of Ali, the fourth Caliph of Islam, and the teachings of 13th-century Sufi saint Haji Bektash Veli, Alevi-Bektashi ballads express shared emotions, struggles, and hopes. Therefore, my point of view argues that these ballads do more than preserve the Anatolian ballad tradition. They create a sense of …

An Optimization Study Of Multi-Orifice Synthetic Jets, Rhett T. Parry

All Graduate Theses and Dissertations, Fall 2023 to Present

From the mixing of creamer into coffee, to the dynamics of a dust storm, or smoke rising from a chimney—everything is driven by turbulent fluid motion. Experimentalists bring the complex driving mechanism that is turbulence into a laboratory setting to fundamentally understand its behavior in response to certain test parameters. Researchers may choose various drivers, or “actuators”, of fluid motion to start the turbulent regime for their applications. However, in building an entire experimental apparatus, they miss the step of ensuring that an individual driver is performing as best as possible. A common actuator used in experimental studies is a …

Evaluating Cyanotoxins In Surface Water And Aerosols Near Utah Lake, Dylan R. Mcpeake

All Graduate Theses and Dissertations, Fall 2023 to Present

Utah Lake is a freshwater lake in Utah County near Provo, Utah. It is the third- largest lake in Utah and is important for recreation and local businesses. However, from June to October, the lake often has cyanobacteria harmful algal blooms (cHABs), which contain a toxin called cyanotoxin. These toxins can be dangerous to people who come into contact with the water. Government agencies regularly check for cHABs and warn people when the water is unsafe for activities like swimming. Collecting water samples to test for cHABs can be risky because it can possibly result in direct contact with the …

[M]Otherhood: Navigating Work-Family Constraints And Strategies In Pink-Collar Jobs, Madison Brunell

All Graduate Theses and Dissertations, Fall 2023 to Present

Working mothers continue to confront cultural norms and workplace practices that frame paid labor as incompatible with caregiving. In the workplace, these norms often result in motherhood bias and discrimination due to the incompatibility between norms of the ‘ideal worker’ and the ‘ideal mother’ (Acker 2006; Williams, Blair-Loy and Berdahl 2013). This tension is especially acute in pink-collar jobs, women-dominated occupations in service and care sectors, which are often mischaracterized as mother- friendly despite offering limited flexibility, low pay, and minimal structural support (Sartor, Lange, and Tröster 2023; Deming 2022; Ervin et al. 2022). While prior research has explored the …

"I Was In The Story": The Relationship Of Oral Storytelling With Student Hope, Narrative Transportation, And Religious Beliefs, Jacob B. Earnest

All Graduate Theses and Dissertations, Fall 2023 to Present

This study investigated the potential relationships with oral storytelling and student narrative transportation levels, student hope levels, and student religious beliefs. The Children’s Hope Scale and the Transportation Scale-Short Form were to assess hope levels and narrative transportation levels in participants. Results suggest that oral storytelling may have a strong relationship with narrative transportation. A relationship with oral storytelling and student religious beliefs is also suggested. Oral storytelling and student hope levels, and the possible connection between student narrative transportation levels and student hope levels, needs further research.

Analysis Of Thrust Performance And Noise Generation Of Uam Composite Propellers Fabricated Using Composite-Based Additive Manufacturing, Samiul Alam

All Graduate Theses and Dissertations, Fall 2023 to Present

Urban air mobility (UAM) is an emerging transportation concept that uses lightweight, efficient aircraft for transporting goods and passengers and performing other logistical activities. One of the biggest challenges in developing UAM from a structural perspective is manufacturing strong and reliable propellers that are lightweight and durable. Traditional manufacturing methods for composite propellers are expensive, time-consuming, and difficult to scale. This study explores a new approach using Composite-Based Additive Manufacturing (CBAM) to produce high-performance propellers more efficiently. CBAM allows for the fabrication of strong, lightweight composite propellers using short manufacturing lead times. However, one challenge with this technique is that …

Effects Of Elevation, Fire Age, Burn Severity, And Pre-Fire Vegetation On Post-Fire Sagebrush Songbird Communities, William D. Harrod

All Graduate Theses and Dissertations, Fall 2023 to Present

The Sagebrush Biome of western North America has been threatened by a combination of interconnected threats. In the Great and Columbian Basins, a large portion of sagebrush loss has been due to an increase in higher-severity wildfires, caused by invasive annual grasses. As sagebrush declines, numerous wildlife species that rely on the biome have experienced similar trends. Sagebrush-adapted songbirds such as sage thrasher, Brewer's sparrow, and sagebrush sparrow as well as steppe-songbirds, have all experienced population declines. Currently, limited information exists as to how fire severity or recovery affect these songbirds or what resource managers can do to improve their …

Optimization Of The Root Zone In Controlled Environment Agriculture, Brendan Fatzinger

All Graduate Theses and Dissertations, Fall 2023 to Present

Controlled environment agriculture (CEA) helps grow plants in spaces where resources like water and nutrients are limited, such as deserts or spacecraft. Effective management of water in the root zone, the area where plant roots grow, is vital to keeping plants healthy, especially in closed-loop systems where water cannot be wasted, as will be necessary for long-duration space missions.

An improved automated watering system designed for use in space-like environments was developed over several trials. Early designs using suction to draw water through tubes faced problems with uneven watering and roots blocking the tubes. Switching to a system that pushed …

An Investigation Into The Principle Of Symmetric Criticality, Guillermo Frausto

All Graduate Theses and Dissertations, Fall 2023 to Present

In physics, symmetries help us understand complex systems by revealing conserved quantities and simplifying equations. In the context of general relativity, where spacetime is curved and dynamic, these symmetries become especially important when trying to reduce or solve the equations that govern gravitational and matter fields.

This dissertation investigates a mathematical principle known as the Principle of Symmetric Criticality (PSC), which helps determine when symmetries can be used to simplify physical theories without losing essential information. While often assumed to be valid, PSC does not always hold, and understanding when it does is critical for the reliable use of symmetry …

Cutting Propagation And Out-Planting Of White-Margined Beardtongue (Penstemon Albomarginatus M.E. Jones), A Vulnerable Herbaceous Perennial Of The Mojave Desert), Alexander Stosich

All Graduate Theses and Dissertations, Fall 2023 to Present

Plant biodiversity is crucial for the proper functioning of ecosystems, with many species needed to maintain the variety of functions provided, especially with increasing environmental change. However, plant biodiversity is threatened in many different ecosystems, primarily through habitat loss. Species can be conserved by protecting their original habitat and mitigating for threats such as invasive species or altered disturbance regimes (plant conservation); however, with declining population numbers and continued habitat loss and/or disturbance, it may be necessary to actively move plants (plant restoration). Plant restoration is dependent on developing the capacity to a) reliably propagate plants in a nursery and …

Adapting To Change In Amenity-Oriented Communities: Innovative Strategies For Shifting Social And Environmental Needs, Emma L. R. Epperson

All Graduate Theses and Dissertations, Fall 2023 to Present

Amenity-oriented communities are places with significant and desirable natural amenities that are highly visited and plentiful within the Intermountain West. These high rates of visitation create complex challenges such as congestion in recreation spaces and in towns and increase costs of living. These communities are typically rural and often do not have the resources, funding, or infrastructure to combat these challenges. Although tourists provide financial stability and other amenities to these towns, local wellbeing is highly impacted. Outdoor recreation and the nature connections derived from outdoor experiences are major contributors to wellbeing in amenity communities. This research investigates the changes …

Intra-Stand Movement Of Balsam Woolly Adelgid (Adelges Piceae) In The Intermountain West, Michael S. Wayman

All Graduate Theses and Dissertations, Fall 2023 to Present

Balsam woolly adelgid (BWA, Adelges piceae (Ratz.)) is an invasive insect of true firs (Abies spp.). BWA has spread from initial introductions on the west coast of North America in the 1920s through the Intermountain West and has recently invaded Utah. White fir (A. concolor) and subalpine fir (A. lasiocarpa) are the two main species of concern in this region; however, subalpine fir has been found to be more susceptible to attack and subsequent damage. While long-range dispersal mechanisms and patterns are of interest for spread across regions and for predicting new infestations, very little …

Aquatic Habitat Representation For Robust Water Resources Management And Fish Conservation Decision-Making, Gregory C. Goodrum

All Graduate Theses and Dissertations, Fall 2023 to Present

We rely on rivers to provide water supply, flood control, and hydroelectricity for people and to sustain aquatic ecosystems. The development of dams and reservoirs to provide water for people did not consider environmental impacts to rivers, leading to widespread decline of freshwater species and habitat. Improving environmental outcomes of water management is needed to protect and restore aquatic ecosystems. However, rivers are complex and variable, making them difficult to represent as objectives for water management. This dissertation explores approaches to improve aquatic habitat representation and environmental objectives for water resources management and river conservation and restoration.

Chapter 2 uses …