Digital Commons Network^™

Thaw: A Memoir, Diane Bush

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This collection of creative nonfiction essays is a hybrid text of visual and verbal narratives located broadly within the genres of memoir, research-based nonfiction, and history. Women's memoirs, including a number of non-traditional texts, historical narratives, and an archival collection of photographs, provided springboards for the exploration of and reflection on the emotional terrain of loss, the ache of remembrance, and the ultimate desire for peace.

Ultimately, this work is a search for solace amidst emotional upheaval, beginning in childhood, after the deaths of my father, mother, first husband, and beloved aunt. Unable to sit still with my grief, I …

The Question Concerning The Cooptation Of The Sundance Film Festival: An Analysis Of The Commodification Of Independent Cinema, Matt Dee Cottrell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Sundance Film Festival has transformed from being a fringe festival to a leading showcase for independent cinema. This research shows that studios now descend upon the festival to acquire films for commercial distribution. The Sundance Film Festival seems to currently operate as a marketplace for films rather than an independent festival. This research seeks to examine how Hollywood studios have been able to infiltrate and commodify independent projects from the Sundance Film Festival and what the potential ramifications are for emerging independent filmmakers seeking to have their projects screened at the festival. In other words, have Hollywood studios coopted …

Interim Access To The International Space Station, Tyson Karl Smith

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis evaluates mission scenarios using the existing Evolved Expendable Launch Vehicles for delivering the Crew Exploration Vehicle to the International Space Station. The Space Shuttle is scheduled to retire in the year 2011 and the Ares I is being developed to replace it. With its current schedule, the earliest that the Ares I will become fully operational is 2016. The configurations in this thesis are presented to narrow the gap in which the USA does not have direct access to the International Space Station. They also present "buy down" options for the USA human space operations, if the current …

Implementing Graphic Organizers In A General Education Earth Systems Classroom, Jennifer P. Slade

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Previous research has shown that implementing graphic organizers and giving the needed instruction to use and study content information increases academic gain of students with learning disabilities. In the present study students actively engaged in using graphic organizers, which helped them demonstrate their learning on multiple choice questions. On the multiple choice test, the overall mean gain for the experimental group was 45%. The control group's overall mean gain on the multiple choice test was 30%. While the posttest scores for students in the graphic organizer group were significantly higher than posttest scores of students in the control group, few …

Memory Architecture Template For Fast Block Matching Algorithms On Field Programmable Gate Arrays, Shant Chandrakar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Fast Block Matching (FBM) algorithms for video compression are well suited for acceleration using parallel data-path architectures on Field Programmable Gate Arrays (FPGAs). However, designing an efficient on-chip memory subsystem to provide the required throughput to this parallel data-path architecture is a complex problem. This thesis presents a memory architecture template that can be parameterized for a given FBM algorithm, number of parallel Processing Elements (PEs), and block size. The template can be parameterized with well known exploration techniques to design efficient on-chip memory subsystems. The memory subsystems are derived for two existing FBM algorithms and are implemented on a …

Salinity Inventory And Tolerance Screening In Utah Agriculture, Austin Mccoy Hawks

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Soil salinity, a yield-limiting condition, has plagued crop production for centuries by reducing crop productivity. Research has introduced methods for successfully managing soil salinity. This research discusses the adaptation of established management methods to create new soil salinity management techniques.

One adapted technique is an automated crop screening apparatus. A new design was created and successfully used in rapidly screening two strawberry cultivars to determine their tolerance to salinity. Screening crops and determining their tolerance to yield-limiting conditions are essential in managing soil salinity.

Another salinity management tool used in this research was electromagnetic induction (EMI). EMI was used to …

Design, Test, And Calibration Of The Utah State University Floating Potential Probe, Jessica D. Gregory

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The ionosphere is a conducting layer in the Earth's upper atmosphere and is the nearest naturally occurring plasma environment. Inherent to all plasma environments is an electric field. Currently, the double electric field probe is the most successful instrument for measuring the electric fields of space plasmas. Utah State University/Space Dynamics Lab has developed a double electric field probe, called the Floating Potential Probe (FPP), with a slightly different instrumentation approach than what has been done previously. The FPP is one component of a suite of instruments that launched in fall of 2007 from Wallops Island, Virginia, as part of …

Effects Of Coyote Removal On Pronghorn And Mule Deer Populations In Wyoming, Dylan Earl Brown

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

I studied the relationship between coyote (Canis latrans) removal and pronghorn (Antilocapra americana) and mule deer (Odocoileus hemionus) density and fawn:doe ratios in southwest Wyoming and northeast Utah in 2007 and 2008. Coyote removal variables studied included the number of coyotes removed, ground hours worked, total hours worked, coyotes removed/aerial gunning hour, coyotes removed/ground work hour, and coyotes removed/total effort hour. None of the variables explained changes observed in fawn:doe ratios of pronghorn or mule deer. The number of coyotes removed, ground hours worked, total hours worked, and coyotes removed/aerial gunning hour were positively …

Alternative Sampling And Analysis Methods For Digital Soil Mapping In Southwestern Utah, Colby W. Brungard

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Digital soil mapping (DSM) relies on quantitative relationships between easily measured environmental covariates and field and laboratory data. We applied innovative sampling and inference techniques to predict the distribution of soil properties, soil attributes, taxonomic classes, and dominant vegetation across a 30,000-ha complex Great Basin landscape in southwestern Utah. This arid rangeland was characterized by rugged topography, diverse vegetation, and intricate geology. Environmental covariates calculated from digital elevation models (DEM) and spectral satellite data were used to represent factors controlling soil development and distribution. We investigated optimal sample size and sampled the environmental covariates using conditioned Latin Hypercube Sampling (cLHS). …

Geometry And Electronic Structure Of Doped Clusters Via The Coalescence Kick Method, Boris Averkiev

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Developing chemical bonding models in clusters is one of the most challenging tasks of modern theoretical chemistry. There are two reasons for this. The first one is that clusters are relatively new objects in chemistry and have been extensively studied since the middle of the 20th century. The second reason is that clusters require high-level quantum-chemical calculations; while for many classical molecules their geometry and properties can be reasonably predicted by simpler methods.

The aim of this dissertation was to study doped clusters and explain their chemical bonding. The research was focused on three classes of compounds: aluminum clusters doped …

Removal And Utilization Of Wastewater Nutrients For Algae Biomass And Biofuels, Erick W. Griffiths

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Logan City Environmental Department operates a facility that consists of 460 acres of fairly shallow lagoons (~ 5'deep) for biological wastewater treatment that meets targets for primary and secondary treatments (solids, biological oxygen demand (BOD), and pathogen removal). Significant natural algal growth occurs in these lagoons, which improves BOD removal through oxygenation and also facilitates N removal through volatilization as ammonia under high pH conditions created by algal growth. Phosphorus, however, is non-volatile and stays in the water and likely cycles in and out of algal cells as they grow and die in the lagoons. In the near future, …

Covert Botnet Design And Defense Analysis, Brandon Lyle Shirley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Intrusion defense system (IDS) development has been largely reactionary in nature. This is especially troubling given that botnets are capable of compromising and controlling thousands of computers before security professionals develop a mitigation technique. As new exploits are created, new mitigation techniques are developed to detect infections and, where possible, remove them. This thesis breaks from this tradition of reacting to malware. Instead, it looks at possible malicious software models through analyzing existing defense systems for exploitable weaknesses.

First, this thesis presents a new specialized botnet that circumvents current network intrusion detection mechanisms. The proposed botnet coordinates external communication among …

Effects Of Starch Addition On Low Fat Rennet Curd Properties And Their Partitioning Between Curd And Whey, Kelly Marie Larsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study determined the impact of starches on the properties of low fat rennet curd as measured by microstructural and instrumental analysis. In experiment 1, 17 starches were initially screened for swelling power, impact of curd yield at 5 g/L and 10 g/L in milk, and settling in rennet-induced partially acidified low fat curd.

Starches examined were narrowed down to five in experiment 2; they included: modified waxy corn starch, waxy rice starch, instant tapioca starch, dextrin, and a modified tapioca starch. These starches were added to skim milk to make rennet-induced partially acidified milk gels. Gels were made by …

Statistical Analysis Of Linear Analog Circuits Using Gaussian Message Passing In Factor Graphs, Miti Phadnis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis introduces a novel application of factor graphs to the domain of analog circuits. It proposes a technique of leveraging factor graphs for performing statistical yield analysis of analog circuits that is much faster than the standard Monte Carlo/Simulation Program With Integrated Circuit Emphasis (SPICE) simulation techniques. We have designed a tool chain to model an analog circuit and its corresponding factor graph and then use a Gaussian message passing approach along the edges of the graph for yield calculation. The tool is also capable of estimating unknown parameters of the circuit given known output statistics through backward message …

Self-Healing Cellular Automata To Correct Soft Errors In Defective Embedded Program Memories, Varun Voddi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Static Random Access Memory (SRAM) cells in ultra-low power Integrated Circuits (ICs) based on nanoscale Complementary Metal Oxide Semiconductor (CMOS) devices are likely to be the most vulnerable to large-scale soft errors. Conventional error correction circuits may not be able to handle the distributed nature of such errors and are susceptible to soft errors themselves. In this thesis, a distributed error correction circuit called Self-Healing Cellular Automata (SHCA) that can repair itself is presented. A possible way to deploy a SHCA in a system of SRAM-based embedded program memories (ePM) for one type of chip multi-processors is also discussed. The …

Selected Barriers And Incentives For Participation In A University Wellness Program, Trever J. Ball

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Evidence supporting the benefits of worksite health promotion (WHP) programs is extensive. Research shows these programs can improve the health of participants, lower health care costs, and improve the bottom line of employers. Although the evidence of these benefits is vast, reported participation in WHP is not optimal. Little published data exists on employees' perceived incentives and barriers for participation in WHP.

The purpose of this study was to determine perceived barriers and incentives for participation in an existing WHP program at a large land-grant university. Opinions of eligible WHP participants were collected using a web-based questionnaire (n = …

Ecological Effects Of Genotypic Diversity On Community And Ecosystem Function, Megan K. Kanaga

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Genotypic diversity within populations can have important evolutionary consequences, but the ecological effects of intraspecific genetic variation on community and ecosystem function have only been studied in a few systems. I present the results of a three-year study designed to address the ecological impacts of genotypic diversity in quaking aspen (Populus tremuloides Michx.), using aspen genotypes planted across genotypic diversity levels (monoculture and mixture) and watering treatment levels (well-watered and water-limited). First, I demonstrated that significant variation exists among genotypes for a wide range of growth, morphological and physiological traits, and quantified high heritability and coefficient of genetic variation …

Disturbance Ecology And Vegetation Dynamics At Varying Spatial And Temporal Scales In Southern Rocky Mountain Engelmann Spruce Forests, R. Justin Derose

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

High-severity disturbances are the primary drivers of Engelmann spruce-subalpine fir ecosystems in the southern Rocky Mountain. Recently, an unprecedented, landscape-wide (at least 250 km2) spruce beetle outbreak killed virtually all the Engelmann spruce on the Markagunt Plateau in southwestern Utah, USA. Results from dendroecological analyses suggested the combination of antecedent disturbance history and drought-driven stand development was responsible for creating suitable host conditions prior to the recent outbreak. Multiple and consistent lines of evidence suggested mixed- and high-severity fires shaped the development of the Markagunt Plateau. Subsequent stand development, influenced by species-specific differential tree-ring response to drought, resulted in the …

Herbicide, Salinity, And Flooding Tolerance Of Foxtail Barley (Hordeum Jubatum L.) And Desirable Pasture Grasses, Karl R. Israelsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Research trials performed in the greenhouse compared the tolerance and response of Hordeum jubatum and desirable pasture grass species to herbicides, salinity, and flooding. Desirable grass species used in this study included: 'Fawn' tall fescue (Festuca arundinaceae), 'Garrison' creeping foxtail (Alopecurus arundinaceus), 'Palaton' reed canarygrass (Phalaris arundinacea), 'Climax' timothy (Phleum pratense), 'Alkar' tall wheatgrass (Thinopyrum ponticum), 'Potomac' orchardgrass (Dactylis glomerata), and 'Mustang' altai wildrye (Leymus angustus). Tolerance to herbicides, salinity, and flooding varied significantly among grass species. Herbicide tolerance was tested using four herbicides at five …

Defining And Meeting The Demand For Agricultural Machinery In China: A Case Study Of John Deere, Garrett W. Davis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

There has been little research conducted regarding the agricultural machinery market in China. However, current data suggest that this demand is dramatically increasing. This dissertation endeavors to generally define the current demand of the agricultural machinery market in China. There has been research conducted on multiple factors of the agricultural machinery market in China, such as land tenure rights, rural migration, government agricultural policies, and others. Through the use of limited quantitative data, market demand is analyzed and defined. By means of a qualitative case study of a successful multinational corporation, Deere & Co., how the demand is being met …

Conservation Design Guidelines For Botanic Gardens, C. Craig Houston

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Botanic gardens worldwide are asked to be centers of conservation. However, little is written about conservation-specific planning and design forms botanic gardens should use to fulfill this assignment. After looking at the history of botanic gardens, with a focus on the purpose/design relationship, examining design guidelines suggested in and inferred from the literature, and presenting habitat conservation principles and sustainable construction guidelines from other areas of practice, the author developed conservation design guidelines for botanic gardens focused on conservation. The guidelines address the following five categories: (1) Mission Statement and Site Character, (2) Presentation of Native Habitats, (3) Presentation of …

The Effectiveness Of The Implementation Of The Early Reading First Initiative On Preschool Students With Disabilities, Jiselle Jones

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Early Reading First Program emphasizes that preschool classrooms provide services to better prepare children entering kindergarten with the necessary language, cognitive, and literacy skills that can avert reading difficulties. This study investigated two questions. The first addressed the effectiveness of the ERF program on students identified with a disability within control and experimental groups. The second addressed the effectiveness of the ERF program on subpopulations of students within the ERF program categorized with a severe language delay or a mild/moderate language delay. To address the first question, results showed a statistically significant difference between the control sample and experimental …

Reconciling Holocene Alluvial Records In Buckskin Wash, Southern Utah, Jonathan E. Harvey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Most approaches to interpreting alluvial records in drylands fall into one of two categories: (1) The "arroyo problem," wherein workers study cycles of streambed aggradation and degradation in broad, unconstricted alluvial valleys; and (2) paleoflood hydrology, where alluvial sequences in constricted bedrock canyons are interpreted as paleoflood deposits from streams with stable channel grade and geometry. Both approaches can be valid in their end-member settings, but there is confusion about how the two record types relate in a single drainage. We address this disconnect in Buckskin Wash, an ephemeral stream that consists of a broad alluvial reach draining into a …

Native Earth Electric Field Measurements Using Small Spacecraft In Low Earth Orbit, John A. Pratt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The use of small satellites to measure the native electric field of the earth has historically presented many problems as a result of the generally modest pointing capabilities of small satellites. In spite of this, the cost of small satellites makes them ideal for just such scientific missions. This thesis details many of the constraints of electric field measuring missions as well as the requirements on any spacecraft designed to accomplish such. The data from a small sounding rocket mission is then analyzed and its usefulness discussed. Possible other methods for use are also discussed.

Comparison Of Youth Migration Patterns Across Cohorts: Evidence From Two National Longitudinal Surveys Of Youth, Yan Guo

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This research is a systematic comparison of youth migration experiences between two birth cohorts, using the first ten rounds of two national longitudinal surveys of youth, NLSY79 and NLSY97. Results show both changes and continuities in youth migration patterns across cohorts for ages16-25. Specifically, youth today have a delayed but stronger migration momentum than the late baby boom generation, the dividing point being at age 22. Women are more likely to migrate than men in the recent cohort, but not in the older cohort. Whites migrate considerably more than blacks and Hispanics consistently across cohorts. The likely life events in …

Synchronization And Media Exchange In Large-Scale Caenorhabditis Elegans Cultures, Jason D. Brown

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The nematode Caenorhabditis elegans is a model organism for understanding sensory molecules of multicellular organisms. Ovulating hermaphrodites produce putative pheromone(s) that cause male attraction. Because pheromones are produced in such small quantities, adult conditioned-media from large-scale synchronous culture is necessary to analyze these pheromones. Current protocols for culture synchronization have volume constraints that limit large-scale synchronous cultures and current methodology for adult conditioned-media production is impractical.

Modification of Tangential Flow Filtration (TFF) systems was investigated for use as a method to increase the volume limits of bleach egg harvest for C. elegans culture synchronization. Also, an adult retention device built …

Financing Home And Community-Based Long-Term Care: Adult Children Caregiver Perspectives, Patricia K. Davis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Large numbers of baby boomers and a shift towards home-based long-term care designate a need for a greater understanding of caregiver attitudes surrounding the financing of long-term home-based care. This study examined more fully the types of home-based long-term care services that family caregivers were utilizing for their parents. In addition, the willingness and ability of caregivers to privately fund these services for aging parents were explored.

The study utilized a preexisting data set of qualitative interviews that were conducted with 30 family caregivers helping to provide long-term care for an elderly parent or older-generation relative. Participants in the sample …

Factors Affecting Air Entrainment Of Hydraulic Jumps Within Closed Conduits, Joshua D. Mortensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

While there has been a great deal of research on air entrainment at hydraulic jumps within closed conduits, very little of the research has specifically addressed size and temperature scale effects. Influences from jump location and changing length characteristics on air entrainment have also received little attention from past research. To determine the significance of size-scale effects of air entrained by hydraulic jumps in closed conduits, air flow measurements were taken in four different-sized circular pipe models with similar Froude numbers. Each of the pipe models sloped downward and created identical flow conditions that differed only in size. Additionally, specific …

Investigating Methods To Reduce Black Bear (Ursus Americanus) Visitation To Anthropogenic Food Sources: Conditioned Taste Aversion And Food Removal, Kari D. Signor

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Conflicts between humans and black bears (Ursus americanus) jeopardize the safety of both humans and bears, especially when bears become food-conditioned to anthropogenic food sources in areas such as campgrounds. Interest in using non-lethal techniques, such as aversive conditioning, to manage such conflicts is growing. I conducted a captive experiment at The Wildlife Science Center in Minnesota and two field experiments in the La Sal Mountains, Utah, to investigate the effects of taste aversion conditioning using thiabendazole (TBZ) with a novel flavor cue and food removal on black bear food consumption and visitation to human food sources. In …

The Impact Of Knowledge, Attitudes, And Peer Influence On Adolescent Energy Drink Consumption, Alyson C. Ward

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Adolescents are labeled as sensitive to caffeine, though despite this predisposition, consumption is high among this population. Energy drinks are a current trend in soft-drink-like beverages and are marketed to 11-35 year olds. However, unlike soft drinks, energy drinks are not regulated by the Food and Drug Administration, and therefore do not have to limit their caffeine content.

This cross-sectional, correlational study sought to identify the role that knowledge, attitudes, and peers play in adolescent energy drink consumption. Adolescents (n = 199), ages 18 to 21, at a university in the west were surveyed. Descriptive statistics revealed that 25% …