Digital Commons Network^™

Impact Of Xenobiotics On Neuronal Outcomes, Gabriela Henriquez

Open Access Theses & Dissertations

Neurodegenerative diseases are a common affliction of the Central Nervous System. They are caused by age, genetics, and environmental factors. Alzheimer's disease, Parkinson's disease, Huntington's disease, and Amyotrophic Lateral Sclerosis are well-known among the host of neurodegenerative disorders, with Alzheimer's disease and Parkinson's disease being the leading pathologies across this canvas. It is known that the pathogenesis of neurodegenerative diseases is multifactorial due to the involvement of genetic mutations, radical-induced protein damage, abnormal aggregation of misfolded proteins, and the formation of amyloid deposits. The amyloid proteins in neurodegenerative disease include Tau and Amyloid (Aβ) in Alzheimer's disease and α-Synuclein in …

Student Attitudes Toward Science: Growth Trajectories And Thematic Analysis Of A Project-Based Internship, Robert Donavin Mccreary

Open Access Theses & Dissertations

In order to increase the number of students pursuing science-related careers, science educators and policymakers have advocated for improving student attitudes toward science (SAS) through inquiry-based instruction, such as project-based learning (PBL). While challenges exist in PBL, research suggests cogenerative dialogue (cogen) can ease the transition for students from traditional learning to PBL. In the present study, a secondary analysis was conducted to examine SAS growth trajectories from participants of the Work With A Scientist Program (WWASP) – a student-scientist internship which integrated cogen with PBL. Additionally, a thematic analysis was conducted to explore student attitudes toward cogen. The growth …

Study Of Barrier Heights And Magnetic Property Using Locally Scaled And Perdew-Zunger Self-Interaction Methods, Prakash Mishra

Open Access Theses & Dissertations

Kohn-Sham density functional theory is a widely used method to estimate the ground state total energies and densities of interacting correlated electronic structures of atoms, molecules, clusters, solids, and liquids. In theory, exact solutions for these properties can be obtained by solving self-consistent one-electron Schrodinger equations based on density functionals for the energy.The practical application of KS DFT require approximation to the exchange-correlation energy functional. Many density functional approximations (DFAs) have been developed with various degree of sophistication and complexity by the satisfaction of exact constraints. Depending on the complexity, these functionals include electron density, density gradients, density Laplacian, kinetic …

Leading In Gendered Spaces: Women Presidents' Perceptions Of Their Experiences In Community Colleges, Keri Moe

Open Access Theses & Dissertations

Gender inequality in leadership is an ongoing challenge found in higher education, including community colleges. Since women remain underrepresented in leadership positions at community colleges, specifically as college presidents, the purpose of this study was to document and better understand the experiences of women in these roles by focusing on three research questions:

• RQ 1: How do women presidents describe their experience in male-dominated community colleges?
• RQ 2: How do gender identity and gender expectations of women impact the behavior of women community college presidents?
• RQ 3: How do women presidents navigate their role within male-dominated community colleges?

Through the …

Goes-16 Level 2 Land Surface Temperature Product-Filling For Cloud Masked Data, Guadalupe Ortega

Open Access Theses & Dissertations

The GOES-16 satellite ground segment team develops different levels of environmental products and makes them readily available to the public. The level 2 Land Surface Temperature (LST) product aims to provide a remote measurement of the Earth’s surface temperature every hour. LST is of fundamental importance to many aspects of the geosciences, for example, to study the Urban Heat Islands (UHI) effect. The product however, does not provide values for pixels where the satellite imager’s view is obstructed by clouds, as determined by a cloud mask intermediate product. The objective of this thesis is to estimate LST in the cloud …

The Posthuman Paradox: Acknowledging What Matters Through Affective Rhetoricity, Alison Wells Zepeda

Open Access Theses & Dissertations

This dissertation advances a theory of affective rhetoricity through personal narrative and an integrative literature review as a methodological approach. The project draws on a theoretical framework constructed from intra- and extra-disciplinary theories of posthumanism, affect, language, material feminism, object-oriented ontology, new materialism, and rhetoric through which collisions between objects and language are examined as arguments for affective rhetoricity as a revised way of understanding rhetoric’s force. The study culminates with ethical and pedagogical implications for the rhetoric and writing classroom, what it means to enact an ontological disposition toward writing, and an exploration of our human capacity to write …

Relationship Between Mothers’/Caregivers’ Reported Learning Difficulty And Internalizing Symptoms (Anxiety And Depression) Of Children Aged 5–17 Years In Ghana, Queen Angela Norman, Nutifafa Eugene Yaw Dey, Kenneth Owusu Ansah, Francis Arthur-Holmes, Henry Ofori Duah, Pascal Agbadi

College of Nursing Faculty Research and Publications

Studies have reported different factors associated with anxiety and depression among children and adolescents. However, studies examining the relationship between learning difficulties and internalizing symptoms of Ghanaian children is scarce. The only study available found that 152 students with learning difficulties who visited a psychology clinic for psychological assessment had high levels of stress and anxiety (Asare & Danquah, 2016). While the study provided preliminary evidence of the relationship between learning difficulties and internalizing symptoms, it had some methodological challenges. For instance, the study used a relatively smaller sample size and subsampled children in Accra. Our study used a nationally …

Enhancing Permanency In Children And Families (Epic): A Child Welfare Intervention For Parental Substance Abuse, Bridget Freisthler, Kathryn Maguire-Jack, Susan Yoon, Elinam Dellor, Jennifer Price Wolf

Faculty Research, Scholarly, and Creative Activity

Background: Across Ohio, parental substance abuse has contributed to a marked increase in the number of children in foster care. Children exposed to parental substance use have a higher likelihood of physical abuse and neglect, and consequently a variety of physical, psychological and cognitive problems. The Enhancing Permanency in Children and Families (EPIC) program is a collaborative effort between the Ohio State University College of Social Work, two county offices of the Ohio Department of Job and Family Services, two juvenile courts and local behavioral health agencies. The goal of EPIC is to use three evidence-based and evidence-informed practices to …

Potential Microplastic Release From Beached Fishing Gear In Great Britain's Region Of Highest Fishing Litter Density, Luka Seamus Wright, Imogen Ellen Napper, Richard C. Thompson

School of Biological and Marine Sciences

While land-based sources of marine plastic pollution have gained widespread attention, marine-based sources are less extensively investigated. Here, we provide the first in-depth description of abandoned, lost or otherwise discarded fishing gear (ALDFG) on northern and southern beaches of the English Southwest Peninsula, Great Britain's region of highest ALDFG density. Three distinct categories were recorded: twisted rope (0.28 ± 0.14 m−1, 17%), braided rope (0.56 ± 0.28 m−1, 33%) and filament (0.84 ± 0.41 m−1, 50%), which likely correspond to fishing rope, net and line. Estimating the disintegration of ALDFG from length and filament number suggests that it has the …

Soil Health Monitoring And Management In Corn And Soybean Agroecosystems Of The Midwestern U.S., Bradley S. Crookston

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Soil health is a concept and condition of the soil where measurable soil properties represent the capacity of a soil fulfilling its intended use, such as producing crops, without constraint to its agro-ecological quality. Soil health assessments are used to estimate the health of a soil by assessing soil biological, chemical, and physical attributes, called soil health indicators, and scoring them on a scale, usually 0 to 100, to guide soil and crop management. However, there are few large-scale analyses of soil health assessment scores and their relationships with crop yield. Understanding how soil health assessments relate to crop yield …

Characterizing Relational Values To Inform Message-Framing At The Boa Ogoi Historical Site, Cole G. Stocker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In an increasingly polarized political climate–particularly in the U.S.– environmental issues such as climate change and its effects on the environment have become hot-button partisan talking points resulting in further division. This has led to research on ways to communicate science which does not further inflame political tensions, but rather reinforces and validates the audience’s values. Science communication research provides the foundation for my case study, which focuses on characterizing the environmental values and worldviews of land managers residing and working near the Boa Ogoi Historical Site in southern Idaho. The Northwest Band of Shoshone Nation (NWBSN) is in the …

Host Plant Use, Phenology, And Biological Control Of The Brown Marmorated Stink Bug (Hemiptera: Pentatomidae; Halymorpha Halys) In Northern Utah, Mark Cody Holthouse

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The invasive brown marmorated stink bug, Halyomorpha halys (Stål), has become a significant agricultural and urban nuisance pest in North America, causing millions of dollars of damage to specialty fruit and vegetable crops over the past two decades. This pest uses over 170 host plant species in North America and is difficult to control with most conventional insecticides. Following the establishment of H. halys in Utah in 2012, this dissertation explores the plant host species, seasonal development, and biological control agents found in the unique climate conditions of the Intermountain West. Chapter II documents important plant species utilized by each …

Estimation Of High-Resolution Evapotranspiration In Heterogeneous Environments Using Drone-Based Remote Sensing, Ayman M. M. Nassar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Evapotranspiration (ET) is a key element of hydrological cycle analysis, irrigation demand, and for better allocation of water resources in the ecosystem. For successful water resources management activities, precise estimate of ET is necessary. Although several attempts have been made to achieve that, variation in temporal and spatial scales constitutes a major challenge, particularly in heterogeneous canopy environments such as vineyards, orchards, and natural areas. The advent of remote sensing information from different platforms, particularly the small unmanned aerial systems (sUAS) technology with lightweight sensors allows users to capture high-resolution data faster than traditional methods, described …

Methods To Improve Our Understanding Of Aspen Regeneration And Aspen Distribution Across The Intermountain West, Robert Joseph Julius Bidner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Quaking aspen (Populus tremuloides) is the dominant broadleaf tree and an ecologically important species at upper elevations in the Intermountain West. Recent large-scale forest mortality events have raised questions about how physiological and climatic factors influence aspen’s distribution across the western U.S. Aspen is particularly well-known for reproducing asexually from its root sprouts, leading to the formation of large clonal stands. In addition, as a wind-dispersed species, aspen sexual reproduction plays an important role in how it is distributed at a landscape scale. My research focuses on questions relating to both sexual and asexual reproduction of aspen.

My …

The Transition To Parenthood: Exploration Of Systemic Changes And Implications For Future Treatment, David B. Jenks

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The transition to parenthood is change that alters the very structure of the family system. Families who engage in this transition are often in need of assistance as they navigate and attempt to manage the changes and challenges that arise. The biopsychosocial-spiritual model is a modality that helps providers more holistically examine the biological, psychological, social and spiritual realms of life’s experiences. This model provides a valuable way to look at the transition to parenthood and understand some of the interactions taking place that may contribute to the development of challenges such as mental health concerns. The present dissertation was …

Intraspecific Variation In Prey Susceptibility Mediates The Consumptive Effect Of Predation: A Case Study Of Yellowstone Elk And Wolves, Lacy M. Smith

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The reintroduction of wolves (Canis lupus) to Yellowstone National Park starting in 1995 is an important case study for understanding the consequences of predation on a prey population. Simulation studies conducted prior to and shortly after wolf reintroduction predicted that wolf predation of elk (Cervus canadensis) would have a modest influence on elk abundance. Predation of elk by wolves has been well documented and elk have remained the primary prey for wolves despite a decline in elk abundance. I used two quantitative approaches to estimate the influence of wolf predation on adult female elk survival and …

Efficacy Of Professional Development Models In Dismantling Scientific Misconceptions, Tyler Hansen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Scientific misconceptions held by educators are both common and well documented. As science education becomes more and more important to students, it is evident that there is a need to not only identify scientific misconceptions held by teachers as a means of bettering the education of students, but also determine effective methods of deconstructing them. Although studies have indicated that professional development can assuage the prevalence of misconceptions held by teachers, there is a dearth in the literature of what makes these professional developments effective. Therefore, this study investigated which models of professional development are most effective in dismantling misconceptions …

Management Strategies For Tomato Spotted Wilt Virus In Utah Tomatoes, Benjamin Scow

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Plant diseases are among the leading causes of tomato stand loss in the state of Utah. Viral plant diseases are often transferred from one plant to another by insect feeding. In Utah, one of the leading viruses that infects tomatoes is Tomato spotted wilt virus (TSWV) which is spread by thrips. The objectives of this study were as follows.

1. Determine the impact from reflective mulch and row covers on thrips population numbers.
2. Determine the effects of row covers on the TSWV infection rate.
3. Compare varietal response to thrip populations.

This 2-year study focused on the use of two different types …

An Investigation Into The Feasibility Of Streamlining Language Sample Analysis Through Computer-Automated Transcription And Scoring, Carly Fox

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of the study was to investigate the feasibility of streamlining the transcription and scoring portion of language sample analysis (LSA) through computer-automation. LSA is a gold-standard procedure for examining childrens’ language abilities that is underutilized by speech language pathologists due to its time-consuming nature. To decrease the time associated with the process, the accuracy of transcripts produced automatically with Google Cloud Speech and the accuracy of scores generated by a hard-coded scoring function called the Literate Language Use in Narrative Analysis (LLUNA) were evaluated. A collection of narrative transcripts and audio recordings of narrative samples were selected to …

The Plant Growth Promoting Ability Of The Microbiome Of Ceanothus Velutinus From The Intermountain West Region, Jyothsna Ganesh

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Due to the ever-changing climate and deterioration of the earth’s ecosystem, environmental stresses like abiotic (drought, salinity) and biotic stresses (pathogen infection) gravely affected plant growth. Native plants are a great way of improving these effects on the urban landscape. They can be used as ornamental plants in landscaping as they are accustomed to their natural environment. The Center for Water-Efficient Landscaping at Utah State University has released a list of plants to be used for low water use landscaping. One such native plant is Ceanothus velutinus (snowbrush ceanothus). They are evergreen plants that can grow in dry and harsh …

Assessing Parental Involvement In Required High School Financial Literacy Education Courses Taught In Utah School Districts, Jennifer L. Gardner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Financial management skills are used throughout our lives, from the first allowance we receive until we provide funds for our funeral services and burial. How do we learn financial skills that last us a lifetime?

Much of our learning comes from watching others, specifically as children and teens, even into young adulthood, as explained by Social Learning Theory. This informal learning can help or hinder us throughout our lives, especially when finances are involved. In recent years, the opportunities for formal education have increased.

Ideally, based on systems theory, formal and informal financial learning would work hand in hand for …

Control Of Three Invasive Annual Grasses In Utah Using Herbicides Including Indaziflam, Hailey L. Buell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Invasive grasses pose a threat to rangeland ecosystems in Utah. Three grasses in particular: downy brome, medusahead, and ventenata can push out native plants and prevent other vegetation from germinating. These grasses can also degrade grazing lands for cattle and act as kindling for wildfires. The use of herbicides is the most common way to rid a site of invasive plants. Herbicides that prevent germination for many years work well to keep annual grasses at bay while not harming the many long-living native plants that are already growing.

A study was designed on a site infested with downy brome to …

Impact Of Fish Oil On Intestinal Permeability, Inflammation, And Performance In Swine, Anthony Fernando Alberto

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Our research examined the effects of fish oil supplementation on intestinal permeability, systemic inflammation and performance in piglets. An lipopolysaccharide (LPS) challenge was done to stimulate the synthesis and release of the cytokines, in an effort to mimic the immune response that piglets would have when facing stress or pathogen challenge. Fish oil increased feed intake but did not affect growth when compared to control. Total fatty acid digestibility increased by 6% when fish oil was included in the diet. Also, we observed a 16% increase on 16-carbon fatty acids digestibility. Fish oil did not affect the plasma …

Balance Control And Exercise-Based Interventions In Older Adults, Youngwook Kim

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Loss of balance and consequential falling, caused by natural degenerations in the sensory and motor systems with aging, are critical issues that require constant research exploration to ultimately improve the quality of life in older populations. Balance can be simply classified into static and dynamic balance, and the latter is more associated with common causes of falling in older adults. There are numerous ways to improve dynamic balance, and exercise training has been considered the most beneficial intervention for that purpose. Specifically, aquatic exercises have been suggested as a promising modality because several properties of water, including buoyance and hydrostatic …

Ammonia Emission Assessment From Gasoline And Diesel Engines Under Utah Specific Conditions, Motasem Suleiman Abualqumboz

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study aims to quantify ammonia (NH₃) emission rates from the on-road gasoline and diesel motor vehicles fleet of the Wasatch Front, Utah. For this purpose, a portable Pollution Emissions Monitoring System (PEMS) was used to estimate NH₃ emission rates from a representative fleet of 53 in-use light-duty (LD) gasoline and diesel vehicles over a total of 166 on-road Real Driving Emissions (RDE) tests. The post-catalyst concentrations of NH₃ precursors, nitrogen oxides (NO_x) and carbon monoxide (CO) were also measured. The outcomes of this study showed that a motor vehicle in the Wasatch Front …

Development And Validation Of A Basic Ground Skills Assessment For Equine-Assisted Services, Sarah J. Andersen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The equine-assisted services program at Utah State University produced and validated an assessment process used to test equines for suitability for equine-assisted services. Equine-assisted services incorporate the interaction of humans who face mental, physical, emotional, and/or social challenges and equines for therapeutic purposes. Recreational, physical, mental, social, and/or emotional goals are met through various equine-assisted services such as therapies, equine-assisted learning, and horsemanship.

Due to the potential for human injury while interacting with equines, it is important to ensure equines are assessed for safe behavior prior to participation in equine-assisted services. This is why our group developed and tested the …

Enzymatic Synthesis Of Maltodextrin Fatty Acid Esters And Their Emulsion Stabilizing And Microbial Inhibitory Properties, Namhyeon Park

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Food additives have been one of the traditional methods for preserving foods and are still in everyday use for multiple reasons. As the market size of processed foods grows, the use of food additives is increasing. Simultaneously, consumers try to avoid specific food additives or demand less processed foods because of several potential health concerns, suggesting the need for safe food additives.

In this environment, one group of food additives consisting of carbohydrates and fatty acids have received attention because of its nontoxicity and biodegradability with diverse functions. Notably, carbohydrate fatty acid compounds made of sucrose have been approved and …

A Comparison Of The Ecology Of Resident And Translocated Beavers Used For Passive Restoration In Degraded Desert Rivers, Emma Doden

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Ecosystem engineers are species that create, destroy, modify, or maintain habitat. As ecosystem engineers, beavers have the potential to assist in stream restoration. Translocation is the capture and relocation of an animal to another area. Translocation of nuisance beavers has become a popular method to reduce human-wildlife conflict and restore waterways. However, few projects monitor beavers after release and compare behavior to naturally occurring resident beavers. Translocations to desert rivers are also rare. We captured, tagged, and monitored 47 beavers which we translocated to desert river restoration sites on the Price and San Rafael Rivers, Utah, USA. We compared translocated …

Wear Behaviors Of Process Cheese With Varying Formulations And The Development Of Predictive Models On Shreddability, Jason Young

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Process Cheese is manufactured by grinding, mixing, and heating with agitation one or more of the same varieties of natural cheese with an emulsifying agent to create a cheese with desirable properties. After process cheese is made, it is often sliced or shredded. Some of its properties affect how well it can be sliced or shredded and can lead to loss of material due to cheese sticking to equipment or being too crumbly. The loss of material, called wear behavior can incur significant losses to cheese manufacturing operations. The purpose of this study was to produce process cheese formulations with …

Racial Diversity Of Texas School Teachers, Julie Ann Olguin-Phillips

Electronic Theses and Dissertations

There is a growing gap between the racial demographics of public-school teachers and their students. Teachers with demographic backgrounds similar to a school’s student population are often successful, particularly in Title 1 schools with high proportions of minority students; however, teacher turnover is high. The students in Texas public schools are a growing minority-majority population. Changes in the student body racial composition and other school-related variables could influence teacher workforce demographics. The focus of discussion of this quantitative research study is to determine the factors that predict the racial diversity of teachers in Texas high schools. The research questions addressed …