Digital Commons Network^™

Delay Discounting Mechanisms In Eating Disorders: A Call To Arms, Rowan Crowder

Undergraduate Honors Capstone Projects

Delay discounting, or temporal discounting, is a measure of impulsivity that describes the devaluation of a reinforcer as a function of its receipt in time. Several studies have shown that individuals diagnosed with a variety of behavioral maladies such as obesity/over-eating, substance abuse, cigarette smoking, heavy drinking, and problematic gambling exhibit greater discounting rates. To be specific, they are more impulsive and less willing to wait for delayed reinforcement than healthy controls. Several of these studies have found that obese women discount at a steeper rate than non-obese women, similar results have been shown in binge eating disorder. The relationship …

Dietary Supplementation With Tart Cherries For Prevention Of Inflammation-Associated Colorectal Cancer In Mice, Ashlie Hunter

Undergraduate Honors Capstone Projects

The cherry fruit is a nutrient-dense food with comparatively low caloric content and significant amounts of key nutrients and bioactive food chemicals. Much of the health benefit of cherries is attributed to their high amounts of anthocyanins, which have anti-oxidant and anticancer properties that contribute to changes in cell signaling pathways involved in inflammation, carcinogenesis and angiogenesis. In this project, we aimed to determine whether dietary supplementation with tart cherries prevents colon tumor development in mice consuming a Western diet compared to a prudent diet. Previously, our research team developed the Total Western Diet (TWD) for mice to emulate typical …

Pairing Of Anaerobic And Aerobic Treatment Of Petroleum Wastewater, Zachary Fica

Undergraduate Honors Capstone Projects

The objective of this project was to treat petroleum refinery wastewater using a combination of anaerobic and aerobic processes, namely an Up-flow Anaerobic Sludge Blanket (UASB) reactor paired with a Rotation Algae Biofilm Reactor (RABR), respectively, to produce a treated effluent. The treatment method developed needed to produce a cost-effective and efficient way to decrease nitrogen, phosphorous, total suspended solids (TSS), and COD concentrations to below State of Utah limitations. It was demonstrated that RABR treatment was capable of reducing effluent concentrations of nitrogen, phosphorus, and TSS to State of Utah limitations. RABR treatment did not significantly reduce COD from …

Running In Rem Cycles: Escapism In The French Postwar Films Le Silence De La Mer And La Vache Et Le Prisonier, Danielle Green

Undergraduate Honors Capstone Projects

This thesis compares two postwar critiques of escapist entertainment that appear in Jean-Pierre Melville's Le Silence de La Mer (1949), and Henri Verneuil's La Vache et le Prisonnier (1959). Their directorial choices acknowledge the power, even shortcomings of escapism through entertainment. Overall, Melville and Verneuil's films argue that escapism creates a "dream" cycle in which the audience, in an attempt to escape reality through entertainment. The films' cyclical narrative structures symbolize their characters' psychology, a tactic that frames Le Silence and La Vache into France's postwar culture. In a side-by-side comparison, the repetitive narrative structure of Le Silence and La …

Management Of Predators, Prey, And Aviation Safety At Naval Air Station Patuxent River, Maryland: Can Coyotes Help Reduce Deer Strike Hazards?, Robert Lewis

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

In the past 100 years, coyotes (Canis latrans) have expanded their range eastward. During their expansion, coyotes hybridized with gray wolves (Canis lupus) in the north and red wolves (Canis rufus) in the south. Coyotes were historically occupants of the plains, but now may be found in environments as varied as the sagebrush steppe, deserts, swamps, and inner cities. St. Mary’s County, MD, home to Naval Air Station Patuxent River (Pax River), was one of the last counties in the country to be colonized by coyotes. Pax River is a research and development/flight test and evaluation center, and houses numerous …

Image Segmentation Using De-Textured Images, Yaswanth Kodavali

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Image segmentation is one of the fundamental problems in computer vision. The outputs of segmentation are used to extract regions of interest and carry out identification or classification tasks. For these tasks to be reliable, segmentation has to be made more reliable. Although there are exceptionally well-built algorithms available today, they perform poorly in many instances by producing over-merged (combining many unrelated objects) or under-merged (one object appeared as many) results. This leads to far fewer or more segments than expected. Such problems primarily arise due to varying textures within a single object and/or common textures near borders of adjacent …

Hanging From The Poplar Tree: Kanye West And Racism In Internet Folklore, Magen Olsen

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Folk ideas regarding African-Americans in nineteenth century America fueled racially charged stereotypes that served to promote segregation into the 1960s. Despite the belief of many Americans that the Civil Rights movement has ushered in an era of “postracism,” artifacts of digital culture prove that racism is still prevalent in American culture. Members of online social groups spread rumors and memes of popular African-American figures to propagate old racist stereotypes and spread conspiracy rumors among younger audiences.

Folklorists Bill Ellis, Gary Fine, Véronique Campion-Vincente, and Patricia Turner provided foundational scholarship on rumors, conspiracy theories, and how they divide ethnic groups in …

Speech Rate Entrainment In Children And Adults With Autism Spectrum Disorder, Camille Wynn

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Purpose: Conversational entrainment, the phenomenon whereby people modify their behaviors to match their communication partner, has been evidenced as critical to successful conversation. It is plausible that deficits in entrainment contribute to the conversational breakdowns and social difficulties exhibited by people with autism spectrum disorder (ASD). The present study examined speech rate entrainment in populations with and without ASD.

Method: Sixty participants including typically developing children, children with ASD, typically developed adults, and adults with ASD, participated in a quasi-conversational paradigm with a pseudo-confederate. The confederate’s speech rate was digitally manipulated to create slow and fast speech rate conditions.

Results: …

From Disaster To Sustainability: The Story Of The Pacific Groundfish, Matthew Richards

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

This paper reviews the circumstances that led to the collapse of the Pacific groundfish fishery and the steps that fishery managers took to curb over-harvesting and bring the fishery back to sustainability. Fishery managers utilized various management tools such as a vessel buyback program, regulatory mechanisms, and market strategies to improve the available data on the fishery, improve safety for fishermen, and reduce harvest rates and overcapitalization. By employing a diverse range of measures, managers developed a system by with they successfully balanced conservation objectives and minimized adverse impacts to fishing communities. Overcapitalization and overharvest continue to degrade the health …

Community Supported Agriculture At Indian Creek Nature Center's Sugar Grove Farm: Sustainable Farming For Iowa, Erin Anzalone

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Agriculture is the largest revenue source for the state of Iowa and the state’s two priority crops are corn and soybeans. Farming practices that emphasize monoculture production of these crops can reduce biological diversity and habitat for all-important pollinators, and exacerbate runoff and erosion that sends nutrient-rich soil, herbicides, and pesticides into streams and rivers. The industrial agriculture model is lucrative now, but unsustainable for Iowa over the long run. Sugar Grove Farm, a subset of Indian Creek Nature Center (ICNC), plans to grow a variety of food crops on a large-scale, economically sustainable farm, and support low-income households in …

Effects Of Alternate Sustainable Soil Amendments On Organic Dryland Wheat Systems, Crista Sorenson

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Organic winter wheat production in northern Utah is faced with several limitations, such as water and available soil nutrients. This study explored the possibility of adding a cover crop in the rotation to improve grain yield. There was also a replication of a large on-farm compost treatment of 18 Mg/ha (dry) for comparison.

Cover crops were selected based on a fall-planted study. Treatments included birdsfoot trefoil (Lotus corniculatus L.) with inoculants planted at 20 kg/ha, Austrian winter peas (Pisum sativum subsp. arvense) with inoculants planted at 36 kg/ha, hairy vetch (Vicia villosa) with inoculants planted at …

Statistical Methods For Assessing Individual Oocyte Viability Through Gene Expression Profiles, Michael O. Bishop

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Abstract

Statistical Methods for Assessing Individual Oocyte Viability Through Gene Expression Profiles

By

Michael O. Bishop

Utah State University, 2017

Major Professor: Dr. John R. Stevens

Department: Mathematics and Statistics

Oocytes are the precursor cells to the female gamete, or egg. While reproduction may vary from species to species, within humans and most domesticated animals, the oocyte maturation process is fairly similar. As an oocyte matures, there are various processes that take place, all of which have an effect on the viability of the individual oocyte. Barring outside damage that may come to the oocyte, one of the primary reasons …

Improving Comprehension For Students With Learning Disabilities Using The Comprehension Improvement Strategy, Ryun Payne

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Students with learning disabilities generally have a difficult time meeting all of the course deadlines and gaining necessary skills in each of their rigorous high school courses. There are students who have difficulty showing what they learn and completing all the requirements for each class. For many years, there have been teachers that have looked for the best ways to instruct students and give them the tools they need to find success. There have been some strategies that have worked through the years and proved to be a great benefit for the students. There are other strategies that must be …

Pitch Perception In Preschool-Age Children Who Are Deaf Or Hard Of Hearing, Megan Lambert

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

This research thesis will 1) provide an overview of the psychoacoustics of music perception, particularly as related to the properties of pitch perception in young children and 2) describe the methods and outcomes of an exploratory study to evaluate the efficacy of obtaining pitch perception data from preschool age children with hearing loss. Each child completed a series of three tasks, including coaching and practice, single note perception, and pitch contrasts. All of the children readily understood the single-note pitch perception task. Pitch contrast performance across participants ranged from 50% to 96% correct for the first data collection period and …

Environmental Values And Landscape Architecture: A New Ecological Paradigm Study, Emmet J. Pruss

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In recent decades, landscape design theory has been affected by an increase in pro-environmental values. Largely, this trend has been associated with notions of ‘sustainability’ and ‘ecosystem services.’ These notions involve sustaining current human behaviors within the constraints of ecological limits and maximizing the benefits that humans receive from ecosystems, respectively. In this way, they involve high evaluations of the instrumental values of ecosystems, yet remain predominantly anthropocentric. As such, they are characteristic of shallow ecology worldview.

In order to assess whether the pro-environmental, yet essentially anthropocentric values involved with modern landscape architecture theory are reflected in the environmental worldviews …

A Tournament Approach To Price Discovery In The Us Cattle Market, Jeffrey Wright

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Cattle price discovery is a process of determining the price in the market through the interactions of cattle buyers (packers) and sellers (ranchers). Locating the price discovery center or market, and estimating price interactions among the regional fed cattle markets and also among feeder cattle markets can help define a relevant fed cattle procurement market. This research identifies that the U.S. cattle markets is discovered in the futures markets, feeder cattle futures and fed futures.

Production Of Phenol-Formaldehyde Adhesives From Catalytic Pyrolysis Oil, Angela M. Akude

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Phenol-formaldehyde adhesives conventionally synthesized from fossil fuel resources pose two major concerns: sustainability issues and environmental concerns. The sustainability issues arise from the inevitable depletion of fossil fuel resources while
the environmental concerns, primarily, stem from the emission of volatile organic compounds. Thus, opting for alternative raw materials from renewable resources reduces the dependence on fossil fuels as well as promote the production of environmentally-friendly products.

The successful commercialization of bio-adhesives requires that the substitution of phenol with bio-oil during resin synthesis should be above 40%. In this study, catalytic pyrolysis oil produced from pinyon-juniper biomass and red mud alumina …

Effect Of N-3 And N-6 Polyunsaturated Fatty Acids On Inflammation, Tao Xu

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Intake of polyunsaturated fatty acids (PUFA) has changed drastically in the past century in the American diet has received attention due to potential effects on chronic inflammation-related metabolic diseases. In this project, the effects of dietary PUFA content and the n-6 to n-3 ratio on inflammatory responses in the acute and chronic inflammation models were evaluated. The PUFA content was modified on a Western diet background to deliver both n-6 and n-3 intakes at the 10^th and 90^th percentile of the population in the United States, and models of acute and chronic inflammation were tested in mice model. …

The Behavior And Ecology Of Cursorial Predators And Dangerous Prey: Integrating Behavioral Mechanisms With Population-Level Patterns In Large Mammal Systems, Aimee Tallian

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Driving into Yellowstone National Park for the first time is a moving experience. Gazing over the sweeping landscapes, seeing a geyser erupt 80 feet into the air, and having your first ‘wildlife encounter’, whether that be a 2 ton bull bison aggressively wallowing on his dirt mound, snorting and kicking up dust, or watching a pack of 6 wolves move through a valley off in the distance, pausing to howl in search of their companions. Yellowstone staff wishes to manage our park in a way that preserves these remarkable experiences. In order to effectively manage this dynamic ecosystem, it is …

Intentional Mentoring Through 4-H: The Role Of 4-H In A Successful Mentoring Program Between Youth And Adults, Emily Ann Shepperd

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

4-H Youth and Families with Promise (4-H YFP) is a one to one youth mentoring program that aims to help youth obtain skills that will help them to be successful. The purpose of this research was to determine if any positive outcomes were shown of youth participating in 4-H YFP. Positive outcomes were identified as peer social competence, greater ability to make positive choices, the development of effective communication skills, building connections, and contributing to the community. Results show that these outcomes positively increased among youth participants in the 4-H YFP program- but the changes were too small to be …

Water Entry Impact Dynamics Of Diving Birds, Saberul Islam Sharker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Plunge diving and surface diving are two main techniques used by seabirds for foraging purposes. While some plunge divers can dive into the water at very high speeds (24 m/s), surface divers do not. This study analyzes the free-surface impact of 3D printed bird head models with embedded accelerometers to determine why surface divers cannot dive safely at high speeds. The problem is investigated in the context of impact jerk where surface divers, unlike plunge divers, are found to experience non-dimensional jerk (J^∗) values exceeding a safe limit. This approach portrays itself as an unconventional yet effective method …

Predicting The Impact Of A Northern Pike (Esox Lucius) Invasion On Endangered June Sucker (Chasmistes Liorus) And Sport Fishes In Utah Lake, Ut, Jamie Reynolds

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Invasive species introductions are associated with negative economic and environmental impacts, including reductions in native species populations. Successful invasive species populations often grow rapidly and a new food web structure is established. The ability of invasive species to outcompete and prey upon native species are two characteristics that make them a leading cause of fish extinctions in North America.

Northern pike (Esox lucius; hereafter pike) are voracious ambush top predators \native to the upper Midwest and Mid-Atlantic regions of the lower 48 United States, Alaska, and southern Canada. Pike have been spreading across the Intermountain West and Pacific …

Evaluating Habitat-Based Niche Requirements And Potential Recruitment Bottlenecks For Imperiled Bluehead Sucker (Catostomus Discobolus), Bryan C. Maloney

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Changes to rivers that alter physical and thermal habitat may cause fish population abundance to decline, due to fewer individuals maturing and entering the adult population. The Weber River has become highly degraded with many dams and diversions altering fish habitat, river volume, velocity, and temperature, and limiting movement between reaches. Bluehead suckers (Catostomus discobolus) occupy only 47% of their historical range and the genetically-distinct Weber River (northern UT) population is declining and contains few young, juvenile fish. My objectives were to determine whether spawning and rearing habitat available in the Weber River may be limiting bluehead sucker …

Spatial And Behavioral Patterns Of Captive Coyotes, Jeffrey T. Schultz

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Environmental enrichment is a technique used at many captive animal facilities that can improve the well-being of their animals. It seeks to enhance habitat features and promote natural behavior by providing a variety of practical ways for captive animals to control their environmental settings, especially during stressful circumstances. Enclosure features, such as shelter structures, are one tool that promotes wild behavior by adding complexity to an enclosure’s physical environment. Enrichment efforts for captive wildlife are most effective when they are specialized to the biological needs of the animals. Human activity may alter captive animal behavior and utility of enclosure features, …

Direct And Indirect Effects Of Climate Change On Plant Populations And Communities In Sagebrush Steppe, Andrew R. Kleinhesselink

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Rapid climate change presents humanity with a number of big problems. Foremost among these is the sad fact that the climate we will pass on to our children will likely be nothing like the climate that we inherited from our parents. Ecologists have collected solid evidence that climate change has already begun to affect the living things around us and the ecosystems humans depend on. Unfortunately, predicting the future effects of climate change on life on earth is not easy. We focused on three research goals as part of an effort to improve our ability to predict how plants and …

The Influence Of Wind Energy Development On Columbian Sharp-Tailed Grouse (Tympanuchus Phasianellus Columbianus) Breeding Season Ecology In Eastern Idaho, Matthew C. Proett

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Columbian sharp-tailed grouse (Tympanuchus phasianellus columbianus; CSTG) has experienced range-wide population declines, primarily as a result of habitat loss or degradation, and currently occupies <10% of its historic range. Expansion of wind energy developments across the remaining occupied CSTG range has been identified as a potential threat to the species. To assess the potential influence of wind energy development of CSTG breeding season ecology, I captured and radio-marked 135 female CSTG drugin 2014-2015 at leks located between 0.1-13.8 km from wind turbines in restored grassland habitats. Using radio-telemetry, I monitored 147 nests and 68 broods and developed models to assess the influence of wind turbines, roads, habitat features temporal factors, and precipitation on CSTG nest site selection, nest survival, brood success, and chick survival. Female CSTG in my study selected nest sites in grassland habitats where >30% of the canopy cover in the nesting core use area was composed of forbs (i.e., broadleaf plants). The strength of selection for this habitat type increased as its availability increased on the landscape. Nest survival increased with higher visual obstruction readings (i.e., concealment) at the nest bowl and in grassland habitats where forb cover exceeded 30% in the nesting core use area. I did not detect an influence of wind turbines or …

The Influence Of Threatened State Preemption On City Council Voting Behavior And Municipal Broadband, Dillon P. Corbridge

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The relationship between city and state government has been contentious at times throughout American history. Cities only have the legal authority granted to them by state government, yet many cities have cause to seek policy that may not be in the interest of those who govern the state. Leaders of American states may choose to preempt municipal authority by removing the legal power of a city to perform certain actions. While preemption provides states with a tool for regulating the policies and practices that cities may pursue, it is unclear whether city leaders act cautiously to avoid preemption, or instead …

Effects Of Changing Environments On Survival Of A Widely Distributed Ungulate, S Andrew Sims

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Wildlife species distributed over large areas of land inhabiting varying environments are experiencing shifts in their home ranges due to human expansion and climate change. As these species home ranges shifts out of familiar, critical habitat they are forced to interact with novel environments, which in turn affects the species population demographics. In order to manage and conserve these species accordingly, specifically in a time of large-scale change, it is imperative that we add to current understandings of how they interact with various environments. Furthermore, frequently generating short-term predictions of demographic drivers will allow for conservation and management insight that …

Effects Of Variable And Changing Environments On Demography: Inferences From A Lesser Snow Goose Colony, David T. Iles

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The mean and variability of environmental conditions have changed as a result of human activity, and continued changes are predicted. The strongest effects on natural populations will often be channeled through species interactions, as shifts in species range limits and life cycle schedules will shift in relation to each other. These changes will often impact rates of survival, growth, and reproduction simultaneously, and these effects will likely differ across habitats.

In chapter 2, I used mathematical modeling and computer simulations to investigate the evolutionary significance of increasingly variable environments, and examine how evolutionary pressures change when multiple vital rates are …

Molecular And Physiological Mechanisms Of Toxin Resistance In Toad-Eating Snakes, Shabnam Mohammadi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Many plants and animals are defended by toxic compounds, and circumvention of those defenses often has involved the evolution of elaborate mechanisms for tolerance or resistance of the toxins. Toads synthesize potent cardiotonic steroids known as bufadienolides (BDs) from cholesterol and store those toxins in high concentrations in their cutaneous glands. Those toxins protect toads from the majority of predators, including most snakes that readily consume other species of frogs. BDs exert their effect by inhibiting ion transport by the Na⁺/K⁺-ATPase (NKA). This ubiquitous transmembrane enzyme consists of a catalytic alpha-subunit, which carries out the enzyme's …