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Articles 1321 - 1350 of 13539
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Selected Projects In Scenic Design, Sera Shearer
Selected Projects In Scenic Design, Sera Shearer
All Graduate Plan B and other Reports, Spring 1920 to Spring 2023
A selection of scenic design projects completed in fulfillment of the Master of Fine Arts degree in scenic design at Utah State University.
Sacred Earth: The Role Of The Natural Divine Within Wendell Berry's "Manifesto", T. Greyson Gurley Ma
Sacred Earth: The Role Of The Natural Divine Within Wendell Berry's "Manifesto", T. Greyson Gurley Ma
All Graduate Plan B and other Reports, Spring 1920 to Spring 2023
Kentuckian writer and poet, Wendell Berry, is often associated with environmental literature and advocacy. However, often overlooked, much of Berry’s work is inherently religious in nature, specifically Christian. Berry’s poetry expresses many of his personal beliefs regarding life, spirituality, religion, interconnection, stewardship, and agriculture. In particular, Berry often uses characters to communicate these aforementioned personal ideas. This practice can be seen through his utilization of the character of the Mad Farmer within a great deal of his poetry, including poetry dedicated to the Mad Farmer himself. Although this character expresses many of the same beliefs as Berry, he is not …
A Study Of Wings With Constant And Variable Sweep For Aerodynamic Efficiency In Inviscid Flow, Bruno Moorthamers
A Study Of Wings With Constant And Variable Sweep For Aerodynamic Efficiency In Inviscid Flow, Bruno Moorthamers
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Wing sweep has been studied by industry and academia since the pioneering days of aviation for both high-speed and low-speed applications. In transonic and supersonic flight regimes it serves to delay the onset of compressibility effects and decrease wave drag. In subsonic conditions, flying wing designs sweep back the main lifting surface in such a way that it can be used for longitudinal stability and control, to allow for the elimination of a traditional empenage. This is desirable because it can decrease the aerodynamic drag. Sweep can also be seen in nature in the wings of birds and fins of …
Evaluating Plant Uptake Of 4,4'-Methylenedianiline, Jeff Wight
Evaluating Plant Uptake Of 4,4'-Methylenedianiline, Jeff Wight
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
4,4’-Methylenedianiline (MDA) is an important industrial chemical used primarily in the production of polyurethane. It is toxic and a suspected human carcinogen. Polyurethane is used in a wide variety of applications such as furniture cushioning, coatings, adhesives, sealants, and elastomers. Polyurethane in soil may degrade and release MDA. This is concerning due to some models predicting a high potential for MDA to be taken up by plants and stored in edible tissue, creating a possible route of exposure for humans and animals. In this project, the potential for MDA to be take up by plants was investigated in order to …
Thermodynamic Analysis Of A Novel Cycle For Nuclear Smr And Heat Transfer Performance Validation Of The Related Supercritical Working Fluids, Benjamin M. Pepper
Thermodynamic Analysis Of A Novel Cycle For Nuclear Smr And Heat Transfer Performance Validation Of The Related Supercritical Working Fluids, Benjamin M. Pepper
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Currently, all operating nuclear power facilities in the U.S. follow the same general design and process: light-water reactors boil water into steam using bundles of nuclear fuel rods as a heat source, pumping that steam through a turbine which powers a generator to produce clean year-round electricity. Water is an effective coolant, but other facilities around the world have demonstrated the ability to use non-water-based coolants in nuclear reactor designs, which consequently have their own trade-offs. Some positive consequences of using different reactor designs include enhanced safety, better economics, and cheaper clean consumer energy. The work described in this paper …
Carnivoran Frugivory And Its Effect On Seed Dispersal, Plant Community Composition, Migration, And Biotic Carbon Storage, John P. Draper
Carnivoran Frugivory And Its Effect On Seed Dispersal, Plant Community Composition, Migration, And Biotic Carbon Storage, John P. Draper
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Seed dispersal by animals is important for the ecology of plants. It is particularly important to understand which animals are involved and how they move seeds differently from one another. Some seed dispersers are understudied despite ample evidence they consume fruits and seeds. This includes animals commonly referred to as carnivores in the order Carnivora. The overall goal of my dissertation was to describe the extent and quality of seed dispersal by Carnivorans, estimate important aspects of seed dispersal for a specific Carnivoran, the coyote, and estimate how differences between a coyote and songbirds affect where plants …
A Computer Programming Intervention For Second Grade Math Students, Eric B. Bagley
A Computer Programming Intervention For Second Grade Math Students, Eric B. Bagley
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The multiplication algorithms taught to elementary students are made to help students find answers quickly, but why the algorithm works and how it relates to multiplication is not widely known. For example, one intuitive meaning of multiplication is that of iterated, or, repeated, addition. In this paper, we look at the ways a visual, block-based, programming activity uses the concept of iteration to help second-graders learn multiplication. The results of the study observing second-grade students use visual programming and iteration to setup and solve multiplication story problems. We found that generally students enjoyed these activities and found them helpful during …
Effects Of Providing Novel Feedstuffs To Livestock On Production And Skeletal Muscle Growth, Laura A. Motsinger
Effects Of Providing Novel Feedstuffs To Livestock On Production And Skeletal Muscle Growth, Laura A. Motsinger
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
As the population increases and available land for food production decreases, it is necessary for livestock producers to continually work towards increasing livestock production efficiency. In livestock operations, feed accounts for the majority of input costs associated with raising livestock. As such, it is necessary to improve growth and production of livestock animals, while also optimizing feed utilization. Different feedstuffs can be included in the diet of livestock animals to maximize growth and production. However, the effects of some of these novel feedstuffs on growth and production of livestock animals has not been elucidated. As such, we investigated the effects …
Voces: Experiences Of Undocumented Latines, José Manuel González Vera
Voces: Experiences Of Undocumented Latines, José Manuel González Vera
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this study was to learn about the challenges that this community faced before the pandemic and how they coped through those challenges. To answer this question, I examined transcripts from group interviews collected in the state of Texas. In total, there were 67 participants, many of whom were undocumented (n = 49) while the others had a relative or friend who was undocumented. Data were analyzed by looking for common patterns and themes in the transcripts, and guided by Critical Race Theory, Latine Critical Theory, and Undocumented Critical Theory. Results suggest that psychological distress is common …
Changes In Voting Behavior Along Partisan Lines Due To Extreme Weather Events Linked To Climate Change, Daniel Brinkerhoff
Changes In Voting Behavior Along Partisan Lines Due To Extreme Weather Events Linked To Climate Change, Daniel Brinkerhoff
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This paper investigates the relationship between extreme weather events linked to climate change and partisan voting behavior. Looking at House of Representative and Senate elections in the US between 2000-2018 and comparing them to extreme damages from droughts, flooding, tropical cyclones, and fire. Ultimately, we do not find a stable relationship between weather damages and partisan voting behavior.
Cultivating Agrobiodiversity In The U.S.: Barriers And Bridges At Multiple Scales, Kaitlyn A. Spangler
Cultivating Agrobiodiversity In The U.S.: Barriers And Bridges At Multiple Scales, Kaitlyn A. Spangler
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The diversity of crops grown in the United States (U.S.) is declining, causing agricultural landscapes to become more and more simplified. This trend is concerning for the loss of important plant, insect, and animal species, as well as the pollution and degradation of our environment. Through three separate but related studies, this dissertation addresses the need to increase the diversity of these agricultural landscapes in the U.S., particularly through diversifying the type and number of crops grown. The first study uses multiple, openly accessible datasets related to agricultural land use and policies to document and visualize change over recent decades. …
Investigating Tourists' Decision Making And Intentions For Outdoor Recreation Participation During Early Covid-19, Prasanna Humagain
Investigating Tourists' Decision Making And Intentions For Outdoor Recreation Participation During Early Covid-19, Prasanna Humagain
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This dissertation aims at discerning tourists’ behaviors and decision making processes for outdoor recreation participation, during the early COVID-19 pandemic. An outdoor recreation trip is defined in this study as “a journey involving at least one overnight stay away from home, and where the purpose is to engage in recreational activities in an outdoor or natural environment.” This dissertation first explores the factors that inhibit tourists’ desires for participating in outdoor recreation trips, the strategies they apply to avoid COVID-19 transmission, and the motivational factors that induce their desires for outdoor recreation participation in the COVID-19 context. The impact of …
Nutrient Uptake And Water Quality In Great Salt Lake Wetland Impoundments, Rachel L. Buck
Nutrient Uptake And Water Quality In Great Salt Lake Wetland Impoundments, Rachel L. Buck
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The Great Salt Lake (GSL) is the largest inland body of water on the Pacific flyway, a major pathway for migratory birds in the Americas that extends from Alaska to Patagonia. The lake is surrounded by approximately 360,000 acres of wetlands, providing critical food, shelter, cover, nesting areas, and protection to between 4–6 million birds that visit each year. Impounded wetlands were created as part of the GSL ecosystem to support waterfowl habitat. These large, shallow, submergent wetlands are diked to control water levels to sustain aquatic plants which are an important food source. Besides providing critical habitat, these impoundments …
Differential Transcriptome Analysis Reveals That Cache Valley Pm2.5 Triggers The Unfolded Protein Response In Human Lung Cells, Morgan Eggleston
Differential Transcriptome Analysis Reveals That Cache Valley Pm2.5 Triggers The Unfolded Protein Response In Human Lung Cells, Morgan Eggleston
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Worldwide, exposure to air pollution is a serious human health threat. Particulate matter (PM) air pollution is a mixture of suspended solid and/or liquid particles and particle size is determined by its aerodynamic diameter. Fine, or “respirable” particles, typically from vehicle emissions, manufacturing, power generation, agriculture, as well as secondary photochemical reactions, are classified as ≤2.5μm in diameter (PM2.5). Upon inhalation, PM2.5 particles can reach the lower, more sensitive regions of the lung, enter the bloodstream, and be distributed to other areas in the body. Large-scale epidemiology studies have shown that PM2.5 air pollution is associated …
Quantifying The Indirect Effect Of Wolves On Aspen In Northern Yellowstone National Park: Evidence For A Trophic Cascade?, Elaine M. Brice
Quantifying The Indirect Effect Of Wolves On Aspen In Northern Yellowstone National Park: Evidence For A Trophic Cascade?, Elaine M. Brice
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Yellowstone National Park is renowned for its incredible wildlife, and perhaps the most famous of these species is the gray wolf, which was reintroduced to the Park in the mid-1990s. After reintroduction, it was highly publicized by scientists, journalists, and environmentalists that the wolf both decreased elk density and changed elk behavior in a way that reduced elk effects on plants, a process known as a “trophic cascade.” Aspen, which is eaten by elk in winter, is one species at the forefront of Yellowstone trophic cascade research because it has been in decline across the Park for over a century. …
Punishment And Choice, Rafaela M. Fontes
Punishment And Choice, Rafaela M. Fontes
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Punishment is defined as a consequence that decreases the frequency of behavior that produces it and is an important behavior regulation mechanism for learning to stop engaging in maladaptive behavior. Punishment has implications for behavioral disorders and treatments and plays an important role in both programmed and natural contingencies. Despite the clear relevance of punishment for behavioral regulation, little is known about how punishment works. Furthermore, punishment research has been in evident decline, leaving important empirical and theoretical gaps in the literature. Therefore, the overall goal of the present set of studies is to fill in some of these gaps. …
Assessing The Role Of Magnetite In Municipal Wastewater Treatment, Patricia Ayaa
Assessing The Role Of Magnetite In Municipal Wastewater Treatment, Patricia Ayaa
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Some municipal wastewater treatment (MWWT) facilities have adopted magnetite in their treatment processes through a technology called BioMag® to meet effluent regulatory requirements for total nitrogen and total phosphorus. However, there is limited information on the mechanisms and efficiency of magnetite in the removal of nitrogen (N) and phosphorus (P) from wastewater. This research, therefore, estimated its effectiveness in the removal of these nutrients, with a case study of the Marlay-Taylor Water Reclamation Facility in Maryland. The intervention analysis model was used, but a new forecasting approach to the model was proposed to fit the data in this study and …
Refining, Testing, And Applying Thermal Species Distribution Models To Enhance Ecological Assessments, Donald J. Benkendorf
Refining, Testing, And Applying Thermal Species Distribution Models To Enhance Ecological Assessments, Donald J. Benkendorf
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The temperature of streams and rivers is changing rapidly in response to a variety of human activities. This rapid change is concerning because the abundances and distributions of many aquatic species in streams and rivers are strongly associated with temperature. Linking observations of temperature effects on species distributions with observations of temperature effects on fitness is important for improving confidence that temperature (and not some other variable) is causing the distributions we observe. Furthermore, producing accurate models of temperature effects on species distributions may allow us to develop tools to diagnose whether or not thermal pollution has impaired aquatic life. …
Children's Mathematical Engagement Based On Their Awareness Of Different Coding Toys' Design Features, Joseph S. Kozlowski
Children's Mathematical Engagement Based On Their Awareness Of Different Coding Toys' Design Features, Joseph S. Kozlowski
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Tangible coding toys have been promulgated as useful learning tools for young children to learn computer science and mathematics concepts and skills. Although research shows coding toys can support mathematics for early childhood aged children, little is known about the specific design features of coding toys that afford mathematical thinking concepts and skills to young children. The purpose of this study was to examine kindergarten-aged children’s awareness of the design features in coding toys and to understand how those design features afford children’s engagement with mathematics. The dataset used for this study was collected as part of design-based research NSF …
Detecting Ecosystem Response To Restoration Efforts With Implications For Recovery Of The Threatened June Sucker (Chasmistes Liorus) In A Shallow, Eutrophic, Utah Lake, Ryan D. Dillingham
Detecting Ecosystem Response To Restoration Efforts With Implications For Recovery Of The Threatened June Sucker (Chasmistes Liorus) In A Shallow, Eutrophic, Utah Lake, Ryan D. Dillingham
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Environmental damage associated with a growing human population will increase globally without active management. Restoration can promote ecosystem recovery, yet often fails to produce desired results and may require decades to achieve noticeable benefits. Detecting small, incremental change sis imperative in these difficult situations. Here, I demonstrate that restoration focused on fish removal triggers incremental responses in aquatic plants and animals. Removing common carp is expected to encourage recovery of aquatic plants, increasing animal habitat, resulting in more macroinvertebrates (e.g., aquatic insects, snails). Carp removal should also increase water clarity, improving visibility for fishes, thus increasing their ability to find …
Role Of Mitochondria In Postmortem Proteolysis And Meat Tenderness, David Son Dang
Role Of Mitochondria In Postmortem Proteolysis And Meat Tenderness, David Son Dang
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Among all eating quality characteristics in beef, tenderness is regarded as one of the most important traits. Previous research indicates that consumers are willing to pay a premium for beef guaranteed to be tender. Yet, tenderness is difficult to control and predict as it is influenced by a multitude of factors. Among these factors, meat aging has been shown to be a strong determinant of tenderness. Meat aging describes a process in which muscle tissue is broken down by other proteins within the muscle, resulting in a more tender product after cooking. Two well-recognized proteins that participate in the breakdown …
Characterizing The Migratory Phenology And Routes Of The Lazuli Bunting (Passerina Amoena) In Northern Utah, Kim Savides
Characterizing The Migratory Phenology And Routes Of The Lazuli Bunting (Passerina Amoena) In Northern Utah, Kim Savides
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Migratory species time their movements to follow changes in food and environmental resources throughout the year. Despite the ubiquity of migration in birds, little is still known about how birds select routes and time migrations. Recent advancements in miniaturized tracking devices now allow tracking of small birds throughout their annual life cycle, presenting opportunities for migratory ecology research at scales immeasurable in the past. Here we investigated the migratory ecology of a northern Utah, USA breeding population of Lazuli Bunting, a common songbird in western North America for which few migratory studies have been completed. We sought to compare breeding …
Comparative Studies In Rangeland Management: Examining The Foundational Assessments Relationship To The Greater Sage-Grouse Habitat Assessment Framework And Assessment Of Predicted Cattle Distributions Using Gps Collars In Rich County, Utah, Michael T. Anderson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The greater sage-grouse (Centrocercus urophasianus) is being used as an umbrella species to manage for 350 plant and animal species that also depend on rangeland communities. Sage-grouse habitat assessments have been carried out using multiple methods. Standard sage-grouse methods described by Connelly et al 2003, include line intercept (LI) and Daubenmire frames (DF) measuring canopy cover. These methods were adopted broadly among sage-grouse biologist and used to develop habitat objectives for greater sage-grouse. Federal land management agencies now use the Habitat Assessment Framework (HAF). Specifically, HAF employs line-point intercept (LPI), to assess foliar cover in sage-grouse habitat. While …
Opportunities For Optimal Apple Production Management In Arid Conditions, Sam Johnson
Opportunities For Optimal Apple Production Management In Arid Conditions, Sam Johnson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Apple trees are susceptible to biotic and abiotic stresses in the Intermountain West. The arid climate along with non-ideal soils make apple production challenging. Also, as high-quality agricultural land is developed, crop production gets pushed to land that often is saline. Apple trees grow poorly in saline soils. If apples are going to be grown in Utah, rootstocks must be identified that will tolerate saline soils. The USDA rootstock breeding program produced some rootstocks that may show salt tolerance. This project assessed the salt tolerance of these apple rootstocks in the greenhouse and in the field. Test rootstocks were compared …
Greater Sage-Grouse Brood Responses To Livestock Grazing In Sagebrush Rangelands, Hailey Peatross Wayment
Greater Sage-Grouse Brood Responses To Livestock Grazing In Sagebrush Rangelands, Hailey Peatross Wayment
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The distribution and abundance of the greater sage-grouse (Centrocercus urophasianus; sage-grouse) have declined in the last 60 years. Range contractions and population declines have been attributed to loss and fragmentation of their sagebrush (Artemisia spp.) habitats. Grazing by livestock remains the predominant anthropogenic land-use across sagebrush ecosystems in North America, occurring on 87% of remaining sage-grouse habitat. Most of the peer-reviewed literature reports the potential for negative impacts of sagebrush reduction treatments, to increase livestock forage, on sage-grouse habitat. However, few studies have linked livestock grazing at the landscape level to vital rates (e.g., nest initiation rates, …
A Content Analysis Of Graphical Literacy Skills Instruction In Fifth Grade Core Reading Programs, Georgia A. Bunnell
A Content Analysis Of Graphical Literacy Skills Instruction In Fifth Grade Core Reading Programs, Georgia A. Bunnell
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this content analysis study was to identify the affordances embedded in core reading program (CRP) teacher’s manuals that facilitate graphical literacy skills as a component of literacy instruction. In the informational text selections of selected CRPs, graphic category, type, function, and connection to text were assessed to determine the kinds of graphics used to convey information. The instructional guidance associated with these graphics was then evaluated for type of instruction (no instruction, reference, and teach) and explicit instruction elements. The results from this study indicate that representation photographs and general images are the most prevalent type of …
Let Us Live To Make Men Free: Locke And Aquinas On Toleration And Natural Law, Micah Safsten
Let Us Live To Make Men Free: Locke And Aquinas On Toleration And Natural Law, Micah Safsten
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Tolerance is a difficult and controversial concept in political rhetoric. For many, tolerance requires the acceptance of what one believes is evil. Still, most of us feel as though we must accept the differences of others on some level. This thesis is an attempt to better understand tolerance. To do so, it uses the concept of natural law, or the idea that all law should justified through one, universal theory of good. This would seem contradictory, as natural law supposes that a single vision of the good life exists for all. Yet the natural law theory of one legal theorist, …
Impact Of Ph And Palmitic Acid On Ruminal Fermentation And Microbial Community Composition, Lexie Padilla
Impact Of Ph And Palmitic Acid On Ruminal Fermentation And Microbial Community Composition, Lexie Padilla
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The objective of this study was to evaluate the effects of dietary palmitic acid and pH on rumen fermentation, fiber digestibility, and bacterial community composition. The two factors in the experiment were palmitic acid treatment and pH treatment. Palmitic acid treatments included a control diet compared to a diet containing 1.5% palmitic acid. pH treatments included normal pH (6.6 to 7.0) compared to low pH (6.0 to 6.4). Rumen fluid from a cow was added to artificial rumens to study the effects of the two treatments relative to fermentation and changes within the microbial community. Results of the study showed …
Testing Delay Of Gratification In Rats Using A Within-Session Increasing-Delay Task, Jeremy M. Haynes, Amy L. Odum
Testing Delay Of Gratification In Rats Using A Within-Session Increasing-Delay Task, Jeremy M. Haynes, Amy L. Odum
Psychology Faculty Publications
In delay discounting, preference reversals refer to shifts in preference from a larger-later reward to a smaller-sooner reward. Steep hyperbolic discounting predicts a preference reversal when a smaller-sooner and larger-later reward both become temporally proximal; prior research is consistent with this prediction. Hyperbolic discounting does not predict a preference reversal, however, after an individual chooses a larger-later reward over a smaller-immediate reward; prior research is inconsistent with this prediction. We sought to replicate and extend these findings using a delay of gratification task in rats. The task included a defection response which allowed rats to reverse their preference after choosing …
Reinforced Behavioral Variability In The Valproate Rat Model Of Autism Spectrum Disorder, Ann Galizio, Amy L. Odum
Reinforced Behavioral Variability In The Valproate Rat Model Of Autism Spectrum Disorder, Ann Galizio, Amy L. Odum
Psychology Faculty Publications
Individuals diagnosed with autism spectrum disorder (ASD) tend to display restricted, repetitive behaviors and deficits in social interaction. Rats exposed to valproate (VPA) in utero have been shown to model symptoms of ASD. In previous research, VPA rats engaged in less social interaction and more repetitive responding than controls. The purpose of the present study was to further investigate behavioral variability in the VPA rat model of ASD by testing VPA and control rats in a reinforced-behavioral-variability operant task. In this procedure, rats emitted sequences of lever presses, some of which produced food. During baseline, food was delivered probabilistically, and …