Digital Commons Network^™

A Sociological Evaluation Of A Large Team Science Project: The Iutah Experience, K. Taylor Dean

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Many contemporary scientific research projects are composed of large numbers of researchers working together to provide solutions to social issues that affect our society. In an attempt to understand and address these issues, projects have been implemented where researchers from a wide variety of disciplines come together and collaborate. As this research includes a variety researchers, it requires a unique approach. Questions such as how to make these projects as effective as possible, how to properly evaluate these projects, and how to gauge the quality and success of these projects need to be answered.

These are directly addressed in this …

Droplet Impact Onto Super-Hydrophobic Surfaces And Determining The Response To Heat And Light Of Terrestrial Cyanobacteria, Benjamin B. Lovett

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis examines droplets striking water repelling surfaces as well as the movement of a soil based bacteria under various light and heat conditions. Droplet impact studies have shown that introducing a macroscopic feature to a water repelling surface can reduce the amount of time that droplet is in contact with the surface. By manipulating water droplets to impact different sized needles at varying speeds, we present how a needle can induce a similar reduction in the residence time of the droplet to more widely studied features. Results show the spreading and lift-off characteristics of the droplet are dependent on …

Application Of Winslamm To Evaluate The Effect Of Green Infrastructure Implementation In Northern Utah, Rosa A. Fernández Velásquez

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study provides an evaluation of the performance of the WinSLAMM model in two cities of northern Utah, a region in which it has not been validated to date. Runoff volumes for a series of events from 2015 to 2017 were calculated for six study areas. These results were compared to model outputs to evaluate the prediction accuracy. The model performed poorly when default parameters where used, as expected. Thus, the calibration of runoff coefficient was done with local data. Total suspended solids (TSS), total phosphorus (TP) and total dissolved phosphorus (TDP) were also evaluated and calibrations were developed. The …

Measuring Rural Revolutionary Mobilization: The Militiamen, Soldiers, And Minutemen Of Fauquier County, Virginia 1775 - 1782, Jason Fackrell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The story of the rural soldiers and militiamen of Virginia that served in the American Revolution remains open to historical research and exploration. Recent scholarship of Virginia’s military contribution to the Revolution focuses heavily on relationships of power among social groups that operated within the colony’s hierarchy, concluding that a lack of white, lower-class political and economic representation disabled mobilization among the Old Dominion’s more settled regions. My study emphasizes the revolutionary backcountry’s story by using Fauquier County, Virginia as a case study.

A study of Rural Virginia during the Revolution presents scholars with significant challenges. Literacy rates among the …

Efficacy Of Translocation As A Management Tool For Urban Mule Deer In Utah, Channing R. Howard

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An increase in urbanization in the United States has led to an increase in human-wildlife interactions with deer (Odocoileus spp.) which have been able to adapt and thrive in these urban environments. In Utah, urbanization has occurred along the Wasatch Front which was once traditional mule deer (Odocoileus hemionus) winter range habitat. This urban expansion coupled with an increasing use of these urban areas by mule deer, have led to increasing conflicts with deer. Overabundant urban deer have led to increased concerns over safety from deer-vehicle collisions, and damage to personal property including gardens and landscaping. …

Examining Market Channels For Local Produce: Consumer Affordability And Producer Profitability, Karli A. Salisbury

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study examines the price differences of commonly consumed produce between farmers’ markets and grocery stores in Utah. Our first objective is to compare price differences of a basket of produce between farmers’ markets and grocery stores. We compare these price differences in terms of low-income consumer affordability and if an individual can afford a market basket of produce using a combination of Farmers’ Market Nutrition Program (FMNP) dollars and Double Up Food Bucks (DUFB) incentive dollars. Our second objective for this study is to establish the price premiums of individual produce items based on where the produce was sold, …

Influence Of Environmental Variables On Survival Rates Of Pronghorn (Antilocapra Americana) Neonates Across Idaho, Brett R. Panting

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was completed to better understand pronghorn antelope (Antilocapra americana) populations found throughout Idaho. Antelope were studied in three separate and distinct study areas. The Big Desert, Camas Prairie, and Little Lost and Pahsimeroi valleys were all selected as study sites. Idaho Department of Fish and Game (IDFG) is concerned with current pronghorn populations found throughout Idaho. Pronghorn are a valued big game species found in Idaho. Increasing pronghorn populations in Idaho is a focus of IDFG.

We captured and VHF-collared pronghorn fawns found in our three study areas. Fawns were monitored daily with telemetry equipment for …

Predicting U.S. Adolescents’ Purchasing Of Denim Jeans Using Quality Attributes, Behavioral Characteristics, And Sociodemographics, Michelle Clouse

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to establish a predictive model of the factors that contribute to the decision-making process when purchasing denim by 13- to 19-year-old adolescents living in the U.S. The researcher created an online survey through Qualtrics and administered it to an opt-in panel of adolescents, through Centiment. There were 460 survey responses collected.

Important denim attributes to respondents included comfort and fit, price, durability, and body perception. Significant predictors that increased respondents’ intention to purchase denim jeans included intrinsic attributes-appearance of fabric on the body, cognitive attributes, tighter fit, and purchased denim in the last three …

Surviving A Civil War: Expanding The Scope Of Survival Analysis In Political Science, Andrew B. Whetten

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Survival Analysis in the context of Political Science is frequently used to study the duration of agreements, political party influence, wars, senator term lengths, etc. This paper surveys a collection of methods implemented on a modified version of the Power-Sharing Event Dataset (which documents civil war peace agreement durations in the Post-Cold War era) in order to identify the research questions that are optimally addressed by each method. A primary comparison will be made between a Cox Proportional Hazards Model using some advanced capabilities in the glmnet package, a Survival Random Forest Model, and a Survival SVM. En route to …

Identifying Criticality In Market Sentiment: A Data Mining Approach, Vaibhav Sahu

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The aim of this thesis is to study and identify time periods of high activity in commodity and stock market sentiment based on a data mining approach. The method is to develop tools to extract relevant information from web searches and Twitter feeds based on the tally of certain keywords and their combinations at regular intervals. Periods of high activity are identified by a measure of complexity developed for analysis of living systems. Experiments were conducted to see if the measure of activity could be applied as a predictor of changes in stock market and commodity prices.

A Simple Metabolic Switch May Activate Apomixis In Arabidopsis Thaliana, David Alan Sherwood

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Apomixis, asexual or clonal seed production in plants, can decrease the cost of producing hybrid seed and enable currently open pollinated crops to be converted to more vigorous and higher yielding hybrids that can reproduce themselves through their own seed. Sexual reproduction may be triggered by a programmed stress signaling event that occurs in both the meiocyte, just prior to meiosis, and later in the egg just prior to embryo sac maturation. The prevention of stress signaling and the activation of a pro-growth signal prior to meiosis triggered apomeiosis, the first half of apomixis. The same approach was used prior …

Brun's 1920 Theorem On Goldbach's Conjecture, James A. Farrugia

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

One form of Goldbach’s Conjecture asserts that every even integer greater than 4is the sum of two odd primes. In 1920 Viggo Brun proved that every sufficiently large even number can be written as the sum of two numbers, each having at most nine prime factors. This thesis explains the overarching principles governing the intricate arguments Brun used to prove his result.

Though there do exist accounts of Brun’s methods, those accounts seem to miss the forest for the trees. In contrast, this thesis explains the relatively simple structure underlying Brun’s arguments, deliberately avoiding most of his elaborate machinery and …

The Industry And Occupation Incidence Of State Mandated Maternity Benefits, Adam Bahr

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Government mandates are often used to promote equality in the workplace, often imposing additional costs upon employers. Economic theory suggest that these additional costs will be shifted onto the employees through a reduction in wages. However, when wage shifting is not an option due to anti-discrimination laws, how will employers respond to the additional costs imposed? Gruber (1994) found that wage shifting occurs when the groups benefiting from a government mandate are easily identifiable to the employer, despite the existence of anti-discrimination laws.

This study seeks to further the work of Gruber (1994) and examine wage shifting at an industry …

The Effects Of Enhanced Flows On Community Structure And Ecosystem Functioning In A Montane Utah River System, Joshua A. Epperly

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Due to growing human demands for freshwater within the last century, manmade flow alterations are now a common characteristic of rivers worldwide. Alterations to the volume and timing of flows in rivers are known to negatively impact aquatic biodiversity, biological productivity and ecosystem functions such as nutrient cycling. While previous research has focused on the effects of flow reductions and spates, there is a lack of knowledge on how high flows across longer timespans (i.e. ‘enhanced flows’) impact the structure of river communities and the integrity of ecosystem functions.

The Utah Reclamation, Mitigation and Conservation Commission has expressed interest in …

Why Do They Do That? Understanding Factors Influencing Visitor Spatial Behavior In Parks And Protected Areas, Abigail M. Sisneros-Kidd

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Visitors to parks and protected areas within the United States and worldwide often visit these areas with a particular destination in mind, such as seeing Old Faithful erupt in Yellowstone National Park or standing on the rim of the Grand Canyon in Grand Canyon National Park. These visitor use destinations, and the pathways leading to them, such as trails and roadways, see high levels of use, and as a result, impacts to soil, vegetation, air, water, soundscapes, and night skies that result from this use. The field of recreation ecology studies these impacts to park and protected area resources resulting …

Engelmann Spruce Survival And Regeneration After An Epidemic Spruce Beetle Outbreak On The Markagunt Plateau In Southern Utah, Jessika M. Pettit

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Bark beetle outbreaks are becoming more intense and severe when coupled with the effects of climate change. Engelmann spruce (Picea engelmannii) is one such species facing large-scale, epidemic spruce beetle outbreaks. Large-scale disturbances, such as beetle outbreaks, have major consequences for the future success of the ecosystem, thus highlighting the importance of understanding what promotes amplified outbreaks as well as their effects on future seedling establishment. Our research focused on two parts of a large-scale beetle outbreak: the mortality of spruce trees and the subsequent regeneration of seedlings. Our first study examined the timing of spruce mortality during …

Investigations Into Factors Affecting The Wpd-Loop In The Protein Tyrosine Phosphatases Yoph And Ptp1b, Gwendolyn Moise

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The research in this dissertation documents connections between the primary amino acid sequence of proteins, the dynamics of proteins, and their catalytic function. This research project studied two proteins called protein-tyrosine phosphatases (PTPs): the human enzyme PTP1B, and the bacterial enzyme YopH. PTP1B is a human enzyme that down regulates the insulin receptor on the outer cellular membrane, and causes the insulin receptor to be less responsive to insulin. A deeper knowledge of how PTP1B is different from other human PTPs might be useful in designing drugs to increase insulin sensitivity in diabetics. Yersinia Pestis is the bacteria that caused …

Development And Optimization Of A Produced Water, Biofilm Based Microalgae Cultivation System For Biocrude Conversion With Hydrothermal Liquefaction, Benjamin L. Peterson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Extraction of oil and gas in Utah’s Uintah Basin results in large quantities of wastewater, or produced water, with nutrients and residual organic chemical that represent a significant resource for producing energy-related and value-added products. Produced water was obtained as a biomass producing nutrient source from industries operating in Utah’s Uintah Basin. Within the Uintah Basin (defined as Uintah and Duchesne Counties within Utah) approximately 93 million barrels of water were produced in 2013 while only 11% of the water was disposed of through evaporation, with the national average at 2%. The rest is reinjected into the subsurface.

The goal …

Novel Methods To Produce Large Recombinant Spider Silk Proteins Via Polymerization, Nathan L. Hebert

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Spider silk has long been a subject of scientific research due to its remarkable mechanical properties. Until recently, there has been no way to effectively obtain spider silk except by harvesting it from individual spiders. With advances in technology, the genes that code for the individual spider silk proteins have been isolated and genetically engineered into other hosts to produce recombinant spider silk proteins (rSSp) of varying sizes, Larger rSSp have correspondingly greater mechanical properties in any resulting materials. Using current production methods, larger rSSp cannot be produced in commercially viable quantities while simultaneously being economically viable. The current production …

Chronic Migraines And Couples: A Grounded Theory Of Adaptation To Chronic Migraines For Patients And Their Partners, Douglas P. Mcphee

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was completed to better understand and treat couples wherein one partner suffers from chronic migraines. I interviewed eight couples about their experiences in dealing with migraines as a patient, as a partner, and together. The interviews were transcribed and analyzed by a team of seven researchers. We developed a theory that can be used to understand how patients and their partners adapt to chronic migraines. The theory was grounded in the experiences of the patients and partners who were interviewed. We found that patients and partners alike dealt with burdens and costs associated with chronic migraines. Coping, healthcare, …

Social Stability And Promotion In The Communist Party Of China, Siniša Mirić

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Communist Party of China CCP) controls all political, economic, and military issues in China. In the absence of elections, the only route of recruitment at higher levels of the political hierarchy in the Party is an official promotion. The scholarship on promotions offers two main explanations for advancement inside the Communist Party of China: (i) informal connections between high officials and candidates, and (ii) merit of candidates. This scholarship disregards, however, the importance of achievement of political targets by the candidates, specifically, their ability to deliver social stability.

Like every authoritarian regime, the CCP faces threats from the masses …

Plume Contamination Measurements Of An Additively-Printed Gox/Abs Hybrid Thruster, David A. Brewer

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis examines the impact of the physical contamination on optical surfaces of spacecraft by an ABS/GOX thruster. Plume contamination presents a significant operational hazard for spacecraft solar arrays and thermal control surfaces can lead to decreased power production and increased spacecraft temperatures. Historically, due to the lack of a reliable, on-demand, and multiple-use ignition methodology, hybrid rockets have never been previously considered for in-space propulsion. Recent advancements in hybrid rocket technologies, have made hybrid systems feasible for in space propulsion. However, prior to this study no research had ever been performed with regard to plume contamination effects due to …

Biomass And Phycocyanin From Oil And Natural Gas Extraction Produced Water Utilizing A Cyanobacteria Dominated Rotating Algal Biofilm Reactor (Rabr), Jonathan L. Wood

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The production of cyanobacterial biofilm biomass and phycocyanin from Rotating Algal Biofilm Reactors utilizing undiluted produced water from oil and natural gas extraction as a culture medium was investigated in this study. Produced water is the largest waste stream generated by the oil and natural gas industries and represents a large volume of non-potable water that may be available for algae culture with minimal impact on freshwater resources. Combining the use of produced wastewater as culture medium with the production of high value algal pigments, such as phycocyanin, may increase the economic viability of algae culture and wastewater purification. High …

Changes In Cultural Capital For Native English And Native Spanish-Speaking Families' Children Who Do And Do Not Participate In An Elementary Spanish Dual Immersion Program, Allen Smithee

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study is framed in Bourdieu’s theory of capital, which asserts that the choices we make are usually designed to help us become better off economically; that economic capital is, to some degree, exchangeable with other types of capital (e.g., social and cultural); and that other types of capital can be exchanged for economic capital. The purpose of this study was to understand which forms of capital native English-speaking and native Spanish-speaking families believed they would acquire by choosing to participate in or not participate in Spanish dual language immersion.

In this study I interviewed four native Spanish-speaking students who …

Use Of Verified Twitter Accounts During Crisis Events, Kai Anderson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis reports on the use of verified Twitter accounts during crisis events. Twitter is a social media platform that allows users to broadcast and exchange public text messages and it can be used as a communication tool during crisis events. Verified Twitter accounts are those accounts that Twitter has investigated and found to be genuinely maintained by the claimed owner. Celebrities, public officials, and other well-known persons or companies often seek this account status. The owners of these accounts are likely to provide more accurate or relevant information during a crisis event because they represent a brand, whether themselves …

A Deep Learning Approach To Recognizing Bees In Video Analysis Of Bee Traffic, Astha Tiwari

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Colony Collapse Disorder (CCD) has been a major threat to bee colonies around the world which affects vital human food crop pollination. The decline in bee population can have tragic consequences, for humans as well as the bees and the ecosystem. Bee health has been a cause of urgent concern for farmers and scientists around the world for at least a decade but a specific cause for the phenomenon has yet to be conclusively identified.

This work uses Artificial Intelligence and Computer Vision approaches to develop and analyze techniques to help in continuous monitoring of bee traffic which will further …

Self-Reliance, Social Welfare, And Sacred Landscapes: Mormon Agricultural Spaces And Their Paradoxical Sense Of Place, Anthony Ross Garner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

What is the sense of place of Mormon agricultural landscapes? That is to say, what makes an LDS Church-owned welfare farm or a Mormon family garden meaningful to those who interact with it? In formulating a partial answer to this question, this thesis demonstrates how religious ideals of self-reliance and social welfare explicitly define Mormon agricultural landscapes, providing a sacred sense of their purpose to those who work and benefit from them. However, these sacred landscapes are complicated by developments of industrial agricultural equipment, corporate institutions, and urban demographics, which tend to isolate people from each other and the land …

Changing Delay Discounting: Identification And Evaluation Of Ecologically Valid Methods For Reducing Impulsive Choice, Jillian M. Rung

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Impulsivity takes many forms, one of which is termed impulsive choice. Impulsive choice entails preference for an outcome due to its immediacy relative to more optimal outcomes that take longer to come to fruition. For example, one may wish to have another serving of a decadent dessert after dinner—but doing so may undermine a longer-term goal of improved health and nutrition. If having the extra serving becomes a habit, the consequences of that choice compound and may lead to, for example, obesity. A high degree of impulsive choice such as this is indeed related to issues such as obesity, …

Socioeconomic Status Influence On Mothers’ Interactions With Infants: Contributions To Early Infant Development, Krista L. Gurko

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Children from different socioeconomic backgrounds often have different long-term outcomes in terms of school, language, and emotional wellbeing. At this time, no reasons for these differences have been agreed upon by experts across disciplines. Parents with different personal characteristics and life situations use different types and amounts of interactions with their infants. The social interactions infants experience during their first year of life provide the start of their developmental path in the areas of language and executive control while also guiding their expectations for interactions with people around them.

This study used previously unpublished data from a sample of 79 …

The Effects Of Geometric And Stoichometric Change In Nanoparticles And Materials On Lattice Thermal Conductivity, W. Tanner Yorgason

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Thermal transport properties are critical for applications ranging from thermal management to energy conversion. Passive thermal management has been an area of study for over a century and has only grown as technology has advanced because it requires no additional energy to remove heat. Changing the nanostructure of the materials involved in passive heat transfer methods, either by geometric changes or stoichiometric changes, can greatly improve the effectiveness of this heat transfer method. In order to explore this further, this work employs LAMMPS molecular dynamics (MD) simulation software to calculate the lattice thermal conductivity (λ_p) of a …