Digital Commons Network^™

Adaptive Evolution Of Gene Regulatory Networks In Mammalian Neocortex, Zhuo Li, Linda J Richards, Et Al.

2020-Current year OA Pubs

Mammals have evolved a more complex brain, exemplified by the transformation of the single-layer dorsal cortex of excitatory projection neurons (ExNs) in ancestors into a multilayered cerebral neocortex

Teaching In The Age Of Artificial Intelligence: A Hermeneutic Phenomenological Study Of Teachers' Lived Experiences, Nicholas Ricks Harris

All Graduate Theses and Dissertations, Fall 2023 to Present

Artificial intelligence (AI) is rapidly changing education, creating new opportunities for teaching and learning while also raising challenges for teachers. Although schools are encouraging the use of AI, little is known about how teachers experience this transition or how it affects their professional roles. This study explored teachers’ lived experiences as they begin working with AI, using a phenomenological research approach to understand both what they encounter and how they make sense of those experiences. Through interviews with teachers who have recently engaged with AI in their practice, the research identifies themes that reveal opportunities, challenges, and shifts in professional …

Freshwater Mussel Reintroduction And Recolonization Habitat Modeling Using Hydraulic, Sediment And Geomorphic Parameters, Megan Elizabeth Dinicola

All Graduate Theses and Dissertations, Fall 2023 to Present

Freshwater mussels are an important group of aquatic animals that live within the riverbed, but their populations have been drastically reduced by habitat alteration and other anthropogenic activities. In an effort to bolster populations, river managers and biologists are using mussel reintroductions as part of their restoration efforts but there are gaps in our understanding of where to reintroduce mussels within a river to see them create self-sustaining populations. This research helps shrink this gap by better understanding the physical habitat needs and population expansion potential of subadult freshwater mussels, or the size of mussel that hatcheries grow for reintroduction, …

An Autohistoria-Teoría Of A Pasifika Neptantlera, Belinda 'Ofakihevahanoa Fotu

All Graduate Theses and Dissertations, Fall 2023 to Present

This study was an autohistoria-teoría, a type of autoethnography, where I focused on my writing process as a Pasifika researcher creating a middle- grade fiction. As the researcher, my questions delved into how I engage in writing for a majority-culture dominated publication house in a Western-world writing genre while maintaining the cultural significance of the ancient Pasifika mythologies I reproduced and recontextualized in the novel. The research site was my writing process, and the data gathered came from the variety of ways I navigated cultural stimuli specific to writing the novel. The outcome engaged with the specific way Pasifika (and …

Evaluating The Feasibility, Acceptability, And Preliminary Efficacy Of An Online Acceptance And Commitment Therapy Program To Improve Dietary Quality In Highly Stressed Adults, Francesca M. Knudsen

All Graduate Theses and Dissertations, Fall 2023 to Present

Stress can negatively affect both mental and physical health, which can increase the risk for chronic illness. When people feel stressed, they may also find it harder to make healthy food choices, which can further impact their health. Despite this, there are limited treatments designed to help people improve their dietary quality while managing stress. Acceptance and commitment therapy (ACT) is an evidence-based psychological approach that helps people respond more effectively to difficult thoughts and emotions while behaving in ways that are aligned with their personal values. This study tested whether a brief, online ACT-based program, combined with coaching phone …

Characterizing Metabolic Flux Of Plant Secondary Metabolites From Diverse Animal-Source Foods To Humans, Muhammad Ahsin

All Graduate Theses and Dissertations, Fall 2023 to Present

There is a popular saying: “You are what you eat.” But does this also mean, “You are what your food eats”? This dissertation explores that question by examining how farming practices shape the nutritional quality of meat—and what, if anything, those differences mean for the people who consume it. While modern livestock production and nutrition research often emphasize protein and fat, this work tests the idea that animals function as biological mediators, linking soil and plant conditions to human diets through the chemical composition of meat and milk. To evaluate this hypothesis, we tracked health-relevant plant compounds— phytonutrients—across the soil–plant–animal–human …

A Mixed-Methods Investigation Of Physician Compassion In Consultations For Chronic Primary Pain, Sarah Daehler

All Graduate Theses and Dissertations, Fall 2023 to Present

Chronic primary pain refers to physical pain that has no apparent organic cause, cannot be explained by another condition, and has associated psychological distress or functional impairment. Chronic primary pain is common and can significantly interfere with functioning, including occupational or social functioning. Research has shown that physicians struggle to treat this population, with many physicians reporting feeling unequipped and many patients feeling that their physicians are unhelpful and dismissive. Compassion may play a key role in improving these difficult interactions. The present study analyzed a sample of 99 participants with chronic pain and 100 healthy controls to learn more …

Drought-Tolerant Plants Of Great Salt Lake: Determining Dormancy Break, Germination, And Seeding Timing Requirements To Improve Restoration Under Hydrologically Extreme Conditions, Montana Horchler

All Graduate Theses and Dissertations, Fall 2023 to Present

Wetlands are declining worldwide, and those in arid regions are especially vulnerable to climate change, drought, water diversions, and other human pressures. As a result, land managers increasingly rely on active revegetation to re-establish native plant communities and their associated ecosystem functions. Restoration that utilizes seeds as the propagule source is often the most cost-effective way to revegetate large areas, but in highly variable environments such as exist at Great Salt Lake, Utah, drought and flooding regularly limit plant establishment. Restoration practitioners require science-informed strategies to reach their goal of establishing diverse native plant communities with high native species cover. …

Social And Institutional Factors Influencing Restoration Decisions In Sagebrush Plant Communities In The Great Basin, Carmen Calzado-Martínez

All Graduate Theses and Dissertations, Fall 2023 to Present

Sagebrush landscapes of the Great Basin in the western United States have changed dramatically over the past century. Invasive grasses, repeated wildfires, and past land-use practices have made it increasingly difficult for native plant communities to recover once they are damaged. Most restoration efforts occur after disturbances such as wildfire, when ecosystems may already be severely degraded. An alternative approach is proactive restoration, which aims to strengthen ecosystems before major damage occurs. 

This dissertation examines whether proactive restoration strategies could realistically be used in sagebrush rangelands and what factors influence their adoption. The research combines three complementary approaches. First, interviews …

Out Of Sight, Out Of Mind? Psychological Distance And Public Perceptions Of The Great Salt Lake, Nathan Thompson

All Graduate Theses and Dissertations, Fall 2023 to Present

Over the past several years, Great Salt Lake has received a lot of media attention, both locally in Utah as well as nationally and even internationally. Within Utah, public perception surveys have indicated that concern about the lake varies depending on how low the lake levels are. This suggests that a concept called psychological distance might be influencing concern about the lake as well as support for strategies to help the lake. Psychological distance is the perceived distance a person has from an object, event, or person and is manifested in four ways: across physical distance (spatially), across time (temporal), …

Spatial And Seasonal Concentrations Of Atmospheric Halogens Around The Great Salt Lake (2023/2024), Himalaya Sapkota

All Graduate Theses and Dissertations, Fall 2023 to Present

The Great Salt Lake (GSL), located in northern Utah, is one of the world's saltiest lakes and an essential resource for industry. It is also a significant hotspot for halogen emissions, including chlorine (Cl) and bromine (Br) from both natural and human sources. Although their concentrations in the atmosphere are low, they influence tropospheric chemistry by forming criteria pollutants such as ozone and particulate matter. These pollutants are detrimental to air quality, impacting public health and property. This study investigates the spatial and seasonal variability of halogen species (gas- and particulate-phase of Cl and Br) in the Northern Wasatch Front …

Longing For Home, Ryker Eggenberger

All Graduate Theses and Dissertations, Fall 2023 to Present

This thesis is a collection of creative nonfiction essays examining what it means to belong. Multiple factors of belonging are explored, including belonging in human relationships, belonging to oneself, and feeling a sense of belonging to a physical place. Each essay contains three cohesive narratives—called “strands”—which are woven together to form a single essay. These strands include the author’s personal experiences, site visits conducted by the author, and various research topics. The personal experiences explore the author’s relationship to belonging contextualized by his pure obsessive-compulsive disorder. The site visits recount the author’s experiences in natural and community-oriented places. The research …

Honorata Memoria Prosequar: The Lives Of Republican And Augustan Women As Antecedents For Later Deifications, Megan Fairbanks

All Graduate Theses and Dissertations, Fall 2023 to Present

Emperors and some notable societal figures in the early Roman Empire are known to have practiced apotheosis, a state-sponsored process which confirmed that deceased men, women, and sometimes children had achieved the status of godhood. This process became official during the lifetime of Rome’s first emperor, Augustus, who deified Julius Caesar. As the process developed, it came to involve several formalized elements, including senatorial voting, a public ceremony (consecratio), and the production of commemorative images published through various media such as coins, paintings, and honorific statues. The purpose of this thesis is to determine the possibility of existing precursors for …

A Survey On Digital Reading Materials And Personal Study Of Christian Religious Texts, Teancum Price

All Graduate Theses and Dissertations, Fall 2023 to Present

Religion, including reading from religious texts such as scriptures, are a part of the daily lives of many people. Modern technology has influenced the way that this religious reading takes place, but its effects have not yet been studied. Existing research of the effects of technology on reading focus on topics such as reading comprehension, but the study of religious texts is often focused on achieving a religious experience, so the existing research does not capture the whole scope of these changes. In our study, we surveyed two universities (Utah State University and Abilene Christian University) to ask individuals how …

Cannabis: A Model Plant To Study Light-Mediated Reproductive Development, Madigan J.H. Eckels

All Graduate Theses and Dissertations, Fall 2023 to Present

Cannabis (Cannabis sativa) is a plant of increasing importance for research, medical, recreational, industrial, and agricultural purposes, but a strict legal landscape means that it was chronically understudied. Now that research institutions can utilize this plant for study, we require updated terminology to describe various cannabis flowering types that occur under ideal and non-ideal growing conditions. We introduce new flowering terminology and describe them in text and with photographs.

Plants use light as a resource to power photosynthesis, and a greater total sum of photons generally increases yield. In controlled environment agriculture where growers utilize light fixtures instead …

Assessing Geomorphic Change From Large Wood Additions In An Intensively Monitored Watershed, Alexander Walt

All Graduate Theses and Dissertations, Fall 2023 to Present

Rivers across the American West are under stress. Over time, human activities have decreased riparian vegetation and removed naturally occurring large wood from fallen trees and beaver dams. Overgrazing, wetland drainage, and artificial barriers like levees and berms have further changed these ecosystems, leaving behind simple channels that lack varied habitat for aquatic species.

Efforts to restore rivers have made some progress, but many projects are small in scale and focus more on reshaping the river rather than restoring the natural processes that keep it healthy. This study evaluates a different approach—Low-Tech Process-Based Restoration (LTPBR)—which works with nature to rebuild …

Visualizing Probabilistic Model Checking: An Interactive Framework For Exploring Ctmc Models, Ishara Mawelle Kankanamge

All Graduate Theses and Dissertations, Fall 2023 to Present

Probabilistic model checking is a critical method for analyzing systems characterized by uncertainty, such as communication protocols, randomized algorithms, and biochemical networks. While formal verification tools provide precise numerical data about these systems, interpreting these results is often limited by large state space, high-dimensional state space and time dependent evolution. Current tools typically output raw numerical data, offering limited support for intuitively understanding the time-dependent behavior of a model. This research presents an interactive visualization framework designed to bridge the gap between complex numerical analysis and human intuition. The framework integrates coordinated visual interfaces, including lower-dimensional state-space projections and synchronized …

Production Of Hydrolyzed Lactose Syrup From The Acid Whey, Aubrey Jean Arbon

All Graduate Theses and Dissertations, Fall 2023 to Present

Acid whey has gained significant attention within the dairy industry due to its complex matrix and the processing challenges. This by-product contains lactose that can be isolated, hydrolyzed, and further processed to produce hydrolyzed syrup. To optimize lactose utilization, it is essential to fine-tune the kinetics of the β-galactosidase enzymes used for lactose hydrolysis. To analyze sugars in acid whey, and LC-MS-based chromatographic method was developed. Once the method was developed, the kinetics of β-galactosidase were optimized with respect to enzyme concentration, pH, and temperature. The goal was to achieve the highest possible lactose hydrolysis. The hydrolyzed acid whey was …

Beyond Morphology: Testing Molecular Assessment Of Macroinvertebrate Communities In Alpine Streams Of The Teton Range, Usa, Joshua Vollmer

All Graduate Theses and Dissertations, Fall 2023 to Present

Alpine streams and the macroinvertebrate communities that reside within them are threatened by the rapidly changing climate. Long-term monitoring of these communities is required to understand how they are changing and to predict their future trajectories. Historically, stream monitoring and assessment has been performed by collecting and identifying individuals using their morphological traits. However, in alpine aquatic ecosystems, distinct macroinvertebrate species often lack the morphological differences that allow them to be distinguished. DNA metabarcoding, an alternative method for identification which uses genetics instead of morphological differences, is not impacted by this issue, and therefore, may be better suited for alpine …

Does Psychosocial Stress Moderate The Association Between Indicators Of Vascular Health And Cognitive Performance: An Examination In Native Hawaiian - Pacific Islander And Non-Nhpi Older Adults, Maddy Mills

All Graduate Theses and Dissertations, Fall 2023 to Present

Late-life cognitive decline and dementia that are unrelated to normal aging are a source of major global health concerns. Vascular risk factors, including high blood pressure, high cholesterol, and diabetes, along with psychosocial stress, are well-established risk factors for cognitive decline. However, no research has explored how these variables interact to influence cognitive performance in older adults. Native Hawaiian-Pacific Islanders (NHPI) face disproportionate rates of vascular risk factors linked to cognitive decline, yet this population has been historically underrepresented in health research. As a result, limited evidence exists regarding how these factors collectively impact cognitive performance in this population. This …

The Rodent Electronic Nicotine Delivery System (Rends): Effects Of Age On Self-Administration Of Inhaled Nicotine In Female Rats, Daniel Santos Da Silva

All Graduate Theses and Dissertations, Fall 2023 to Present

Smoking tobacco is the leading avoidable cause of death and drives many health problems. Nicotine, the main chemical in tobacco products, keeps people using it. This study used the Rat Electronic Nicotine Delivery System (RENDS), an inexpensive and freely shared, to examine e-cigarette use in adolescent and adult female rats by exploring four phases of nicotine delivered and not delivered to understand use patterns among ages. Our study found that both adolescent and adult female rats chose to inhale nicotine when given the opportunity, showing drug-seeking behavior. Overall, nicotine use was similar between ages. These results could help inform therapies, …

Evaluation Of Fertilizer Recommendation And Soil Amendment Impacts On Crop Production In The Intermountain West, Megan Baker

All Graduate Theses and Dissertations, Fall 2023 to Present

Fertilizers improve crop yield and quality by supplying crops with essential nutrients, but can also be a significant input cost. Determining what nutrients and rates to apply for optimal crop growth can be difficult, leading many growers to use external sources for these decisions. Land-grant universities are a common source for fertilizer recommendations, but often based on decades-old research and should be evaluated periodically to verify effectiveness and calibrated to current soil analysis methods. Current Utah State University (USU) guidelines for sulfur (S) and zinc (Zn) were tested across Utah in on-farm trials in 2021-2025. Zinc applications of 5 or …

Exploring Cognitive Load Theory In The Post-Secondary Engineering Classroom, Gabriel Q. Van Dyke

All Graduate Theses and Dissertations, Fall 2023 to Present

Engineering programs often emphasize subject-matter expertise over pedagogical training, which can leave students struggling with course demands and contribute to retention challenges. This study applied Cognitive Load Theory (CLT) to examine how undergraduate engineering students experience the cognitive demands of their coursework compared to non-engineering classes. Using a sequential explanatory mixed methods design, cognitive load surveys were followed by interviews to address two research questions: (1) What are the differences in intrinsic and extraneous cognitive load levels between engineering courses and non-engineering courses taken concurrently by undergraduate engineering students? (2) How do engineering students perceive the unique challenges or benefits …

Sequential Products Of Anaerobic Denitrification In Calcareous And Noncalcareous Soils By Use Of The Gas Chromatograph, Grant S. Cooper

All Graduate Theses and Dissertations, Fall 2023 to Present

The sequential products of anaerobic denitrification were determined on seven Western soils (four alkaline, two acid, and one neutral) by soil and gas analysis. The soils with 1% alfalfa and added KNO3 were incubated at moistures slightly greater than field capacity and with an atmosphere of He. The soils and gases were periodically analyzed and balance sheets prepared. The sequence of NO3-->NO2-->N2O-->N2 operated in all soils. The rates of nitrogen interchanges and maximal amounts of nitrate, N2O2 and N2 were determined. From this data it was postulated that the rate-limiting process for denitrification in acid soils is …

Redeveloping Mississippi: A Case Study On Brownfields In Central & Southern Mississippi, Sahrah R. Yeroozedek

Master's Theses

Brownfields, or properties that are or possibly are contaminated with dangerous materials, represent a common obstacle for communities in Mississippi. The real or potential presence of contaminants at these sites often deters investors due to costly cleanup requirements (EPA, n.d. -b). The Environmental Protection Agency (EPA), through its Brownfield Revitalization Program, implemented guidelines for covering the costs and labor associated with the remediation of these properties. The EPA is not, however, responsible for redevelopment that supports long-term environmental and economic sustainability. Although the EPA maintains inventories of all Brownfields, there is also no comprehensive database of Brownfields and their current …

Volunteer Spotlighting: Costly Signaling To Promote Volunteerism, Clyde A. Raible V

Master's Theses

Prosocial behaviors, because they are initially costly and do not guarantee a direct benefit to the actor, can nonetheless increase social status by signaling a willingness to incur cost on behalf of another. Given this signal value, nonprofit organizations may be able to leverage this knowledge to increase donations, such as through the provisioning of attention to, and recognition of, volunteers through social media. I predicted that the costliness of spotlighted behavior and the target signal clarity (i.e., individual vs. group spotlight) would interact with participants’ dispositional dominance and prestige-based status motives to influence volunteerism interest. To explore these associations, …

Assessment Of Mississippi Landfill Capacity In Relation To Waste Generation And Land-Use Constraints, Jason C. Anderson

Master's Theses

Municipal solid waste (MSW) management presents a growing challenge in Mississippi as population trends, socioeconomic change and regional development continue to place pressure on existing landfill capacity. This thesis examines waste generation and disposal patterns from 2000 through 2022 across Mississippi counties, with projections extending to 2050. Historical landfill tonnage data was gathered and compiled from the Mississippi Department of Environmental Quality (MDEQ) and analyzed using regression models in Excel and RStudio, with forecasts generated for both in-state and out-of-state waste flow. Results highlight significant variations among landfills, including differing closure timelines, changing county service areas and notable shifts in …

Factors Associated With Postpartum Depression Symptoms Following Antepartum Hospitalization, Alison N Goulding, Daniel Palacios, Sukru Aras, Hu Chen, Sasidhar Pasupuleti, Marika Toscano, Nicole Cirino, Israel C Christie, Zhandong Liu, Emily S Miller, Terri L Fletcher

Duncan NRI Faculty and Staff Publications

Background: Hospitalized antepartum patients are at increased risk for postpartum depression (PPD). Developing approaches to identify those at highest risk for PPD would enable timely and targeted intervention.

Objective: We aimed to identify factors associated with the development of PPD symptoms in hospitalized antepartum patients and to assess their predictive utility.

Study design: This retrospective cohort study included pregnant individuals hospitalized in a regional referral center due to medical or obstetric complications between 2012 and 2025. Data were extracted from the electronic health record, including demographics, medical and obstetric history, hospitalization characteristics, and postpartum Edinburgh Postnatal Depression Scale (EPDS) scores …

The Secret Science Of Songs. Created By All Children Everywhere, Paul G. Morehouse Phd

The Transdisciplinary STEAM+ Journal

This field article introduces The Secret Science of Songs, a research-informed, practice-based framework that reconceptualizes songs as powerful, transdisciplinary tools in early childhood education. Drawing on over 40 years of classroom-based action research alongside established findings in cognitive science and music perception, the framework argues that young children’s engagement with songs is rooted not primarily in performance skill, but in their innate capacity to perceive and process auditory patterns in music and language. These pattern-based experiences constitute a rich aesthetic and cognitive domain through which children construct meaning, long before mastery of melody or verbal precision emerges.

The article …

Fiesta De Día De Muertos: Integración De Artes Visuales, Artes Literarias, Artes Escénicas Y Patrimonio Cultural En Una Celebración Escolar De Nivel Primaria, Mayra Urbina, Linda Judith Palafox

The Transdisciplinary STEAM+ Journal

Esta nota de campo documenta un festival transdisciplinario de Día de Muertos organizado en el Colegio México, una escuela primaria ubicada en la colonia El Tapatío, San Pedro Tlaquepaque, Guadalajara, México. El evento integró artes visuales mediante la construcción de tumbas decorativas y el montaje de un altar, artes literarias a través de calaveritas literarias escritas por los alumnos, y artes escénicas mediante coreografías de baile y representación teatral, todo ello vinculado con contenidos de estudios sociales sobre el patrimonio cultural mexicano. Aproximadamente 30 alumnos de primero a sexto grado (edades de 6 a 12 años) participaron como intérpretes, escritores …