Digital Commons Network^™

Have Introduced Brown Trout (Salmo Trutta) Affected Native Aquatic Vertebrates In Western United States Streams?, Nora K. Burbank

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The introduction of exotic species to areas outside of their native range is one of the greatest threats to the biodiversity of native freshwater organisms. Exotic species have outcompeted native species for resources such as food and shelter, and in some cases these interactions have resulted in local extinctions or reductions in abundance of those native species. Brown trout are native to Eurasia, but have been introduced to much of the rest of the world, including the United States. In some parts of their introduced range, brown trout have substantially reduced the abundance and home ranges of some native fish …

Relative Importance Of Environmental Variables For Spawning Cues And Tributary Use By An Adfluvial Lake Sucker, Brian A. Hines

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The endangered June sucker (Chasmistes liorus mictus), which is only found in Utah Lake, UT, historically spawned in all streams flowing into the lake, but due to human-caused changes their spawning is restricted to the Provo River. The purpose of this study was to gain a better understanding of the spawning and early life-history of the
June sucker for recovery purposes. My specific objectives were to determine:

1. what environmental factors attract or deter June suckers to certain Utah Lake tributaries for spawning,
2. what cues June suckers to migrate upstream to spawn,
3. if June suckers use more than one …

Using Species Distribution Models To Assess Invasion Theory And Provide Management Recommendations For Riparian Areas In The Eastern Columbia And Western Missouri River Basins, Diane R. Menuz

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Globalization has created opportunities for plant and animal species to be transported to novel ecosystems. A subset of these species become invasive species, which are able to persist and spread rapidly to become influential components in their new ecosystems. Invasive species are often able to out-compete co-occurring native species and can alter fundamental ecosystem properties, such as soil nutrient availability or time between wildfires in a region. The United States is estimated to lose $34 billion per year to invasive plant species through costs to control unwanted species and lowered crop and forage production.

We used statistical models to better …

Managing Water Shortages In The Weber Basin Using The Water Evaluation And Planning (Weap) System, Bereket K. Tesfatsion

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Water is a scarce natural resource while the demand for water grows constantly. In Utah, most of the water resources have already been developed. In addition, Utah is prone to drought events and the effects of climate change may exacerbate the already dire situation. Hence, managing this scarce resource efficiently is very important in meeting the growing demand.

Reservoirs are used to store water which is subsequently released to meet demands. For management purposes, reservoirs have different zones such as flood control zone, conservation zone, buffer zone and inactive zone. Water is normally released from the conservation zone. The water …

The Relationship Of Acculturation And Acculturative Stress In Latina/O Youths’ Psychosocial Functioning, Marsha Tafoya

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was conducted to better understand how acculturation and acculturative stress are related to self-esteem, depression, substance use, and substance use problems in 206 Latina/o youth. Acculturation is the social and psychological process of change that occurs when an individual or group comes in contact with a different culture. The acculturation process can be positive, improving one’s life chances in the new culture, or it could be negative due to the challenging nature of change and adaptation to new cultural and social expectations. This difficulty creates a type of stress, called acculturative stress that has been found to be …

A Dynamic State Metabolic Journey: From Mass Spectrometry To Network Analysis Via Estimation Of Kinetic Parameters, Arockia Ranjitha Dhanasekaran

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The term "metabolism" refers to the chemical processes occurring in a living organism to convert the food consumed into the energy needed to maintain a living state. Metabolism consists of two states, namely, a dynamic state and a steady state. In the dynamic state, the rate of chemical conversion of a substance is proportional to the amount of substance available, whereas in the steady state this rate is constant and independent of the amount of substance present (Chapter 4 Figure 1). Like all other fields of engineering, metabolic engineering involves the analysis and synthesis of metabolism. Molecular biological tools for …

The Potential For Growth In Foreign Direct Investment In The Horticultural Sector Of Armenia, Mikayel Khachatryan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study examines why foreign investors choose to invest in companies in Armenia and is specifically attempting to understand how to attract more investment into the fruit and vegetable companies of Armenia. Investment by foreigners in domestic companies is referred to as foreign direct investment of FDI. The research was completed by gathering information from foreign firms that are already investing in companies in Armenia. This was done by conducting a face-to-face questionnaire with business managers of these companies in Yerevan, Armenia during August and December of 2010. The information gathered from these interviews was used in a statistical analysis …

Class-Wide Respect And Social Support Skill Training To Increase Peer Interactions Of Students With Autism Spectrum Disorders, Melanie Orton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The demand for effective social skills interventions for children with autism spectrum disorders is a pertinent issue for school-based professionals. One approach to increase appropriate social skills is to involve peer support by training a few socially competent children to positively interact with a student with an ASD. Potentially, training larger groups of children could result in increasing the number of different peers who would actively support positive interactions with their classmates with ASD. Thus, the present study investigated the effect of a class-wide peer-training strategy on the percentage of positive social interaction and number of peer contacts for three …

Analysis Of The Import, Export, And Bioavailability Of Nitrogen And Phosphorus Within Pineview Reservoir, Brady K. Worwood

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was conducted to provide new and useful data about Pineview Reservoir and its watershed, produce water and phosphorus (P) budgets for Pineview Reservoir, test the validity of conclusions made in the Pineview Reservoir Total Maximum Daily Loading (TMDL) document, and create estimates of nitrogen (N) loading to the reservoir from both surface and ground water sources. The production of the water and P budgets, as well as the N loading estimates, was accomplished by measuring flow, nitrate, ammonium, total phosphorus (TP), and soluble reactive phosphorus (SRP) that was entering and exiting the reservoir through surface water sources and …

Evaluation Of The Usu Retirement And Savings Seminar, Diana Burk

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Consumers need to acquire financial knowledge and confidence in order to take effectual actions to accumulate adequate retirement wealth and improve their overall financial well-being. Thus, quality financial education programs are needed to empower consumers to achieve these goals. The purpose of this study was to evaluate the effectiveness of the Utah State University (USU) Retirement and Savings Seminar as measured by participant satisfaction and participants‘ financial knowledge, financial confidence, and financial behavior change compared to a similar group of non-participants. The program evaluation was guided by a logic model developed for the seminar.

Data for this study were collected …

Environmental Sensor Anomaly Detection Using Learning Machines, Erick F. Conde

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The search for improvements in the quality assurance/quality control (QA/QC) of real-time environmental measurements has been a field well exploited in recent years. These measurements describe actual environmental conditions and processes that provide relevant information upon which water quality management decisions are based. In situ sensors (located at the site of interest) are commonly used for such real-time measurement purposes. However, the performance of these types of sensors can be affected by such things as human factors, lack of necessary maintenance, flaws on the transmission line or any part of the sensor, and unexpected changes in the sensors surrounding conditions. …

Potential Effects Of Altered Precipitation Regimes On Primary Production In Terrestrial Ecosystems, Joanna S. Hsu

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In addition to causing an increase in mean temperatures, climate change is also altering precipitation regimes across the globe. General circulation models project both latitude-dependent changes in precipitation mean and increases in precipitation variability. These changes in water availability will impact terrestrial primary productivity, the fixation of carbon dioxide into organic matter by plants. In my thesis, I addressed the following three questions: 1.) What will be the relative effect of changes in the mean and standard deviation of annual precipitation on mean annual primary production? 2.) Which ecosystems will be the most sensitive to changes in precipitation? 3.) Will …

Outcomes Of Rotator Cuff Surgery In Utah Workers’ Compensation Patients, Jennifer R. Grewe

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The rotator cuff is responsible for the lifting function of the shoulder and the circular movement of the arm. Rotator cuff injuries are the most common problem for the shoulder and account for approximately 4.1 million annual physicians visits. Approximately 20.7% of the population has at least one rotator cuff tear and more than 75,000 individuals will have rotator cuff surgery each year. Medical and compensation costs associated with a rotator cuff surgery are increasing and current estimated annual costs exceed 2 billion dollars. The increasing prevalence and cost associated with rotator cuff injuries in the United States population represents …

Ultrasonic Flow Measurement For Pipe Installations With Non-Ideal Conditions, Devin M. Stoker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In the arid west, water is among the most valuable of resources. One of the most critical aspects of water resource management is that of flow measurement. Accurate flow measurement data is needed to effectively manage any water distribution system, whether for culinary or irrigation use. In order to successfully and accurately measure water flow in pipes, it is recommended that a straight section of pipe be installed immediately upstream from the flow meter to avoid distorted flow patterns at the metering location. In many existing piping scenarios, however, such flow conditions are impossible to achieve.

The performance of ultrasonic …

Molecular Interactions Of Salmonella With The Host Epithelium In Presence Of Commensals, Prerak T. Desai

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Food-borne infections are a major source of mortality and morbidity. Salmonella causes the highest number of Food-borne bacterial infections in the US. This work contributes towards developing strategies to control Salmonella by (a) defining receptors used by Salmonella to adhere to and invade the host epithelium; (b) developing a host receptor based rapid detection method for the pathogen in food matrix; (C) and defining mechanisms of how probiotics can help alleviate Salmonella-induced cell death in the host epithelium.

We developed a cell-cell crosslinking method to discover host-microbe receptors, and discovered three new receptor-ligand interactions. Interaction of Salmonella Ef-Tu with …

An Embedded Atom Method Investigation Into The Lattice Dynamics Of Metallic Surfaces, Richard B. Wilson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The explosion in electronic devices over the last half century is a result of the successful development and application of theories that explain the physical properties of solids. For example, the theory of lattice vibrations developed in the first half of the 20^th century has had a huge impact on our ability to understand and design devices. The idea that atoms vibrate together in grouped vibrational modes, called phonons, has enabled scientists to quantify the impact that atomic motion has on mechanical, thermal, electrical, and optical properties. This has aided the creation of all sorts of useful technology ranging …

Evaluation And Seismically Isolated Substructure Redesign Of A Typical Multi-Span Pre-Stressed Concrete Girder Highway Bridge, Brian D. Richins

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Seismic considerations greatly influence the lateral and vertical design of a structure, often necessitating larger elements than would otherwise be required. Seismic isolation greatly reduces the demands on a structure due to earthquake loading, allowing the use of smaller, more efficient members and foundations. This case study illustrates the theory and procedure of evaluating the response of a recently built multi-span highway bridge using the most recent (2009) AASHTO code. Based on this response, an equivalent structure was designed to incorporate a seismic isolation system, and the substructure of the isolated bridge redesigned to meet the reduced demands more economically. …

Under What Conditions Do Community Demographics Influence Aggregate Recycling?, Edward Kotter

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Tons of household waste go to landfills throughout the western United States each year. Recycling has been a popular way for cities to extend the life of landfills by decreasing the amount of waste entering them. The development and implementation of recycling programs has not come without challenges. People recycle or do not recycle for different reasons. Much research has been done to understand who recycles, who does not recycle, and what recycling program characteristics elicit greater participation. This study adds to the existing body of literature by focusing on determinants of community-level recycling in the western United States. This …

Predictive Modeling And Analysis Of Student Academic Performance In An Engineering Dynamics Course, Shaobo Huang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Engineering dynamics is a fundamental sophomore-level course required for many engineering students. This course is also one of the most challenging courses in which many students fail because it requires students to have not only solid mathematical skills but also a good understanding of dynamics concepts and principles.

The overall goal of this study was to develop a validated set of mathematical models to predict student academic performance in an engineering dynamics course taught in the College of Engineering at Utah State University. The predictive models will help the instructor to understand how well or how poorly the students in …

Effects Of High-Interest Writing Prompts On Performance Of Students With Learning Disabilities By, Kelsey J. Chlarson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The following study was done to examine the extent to which high-interest narrative writing prompts for 12- to 13-year old students in special education increase accuracy and total words written (TWW) in a 3-min timed writing sample compared to low-interest writing prompts.

Students who will participate will be individuals from a sixth- and seventh-grade special education language arts class who have been classified with LD. In this study, participants select high-interest writing prompts as story starter topics as preferred prompts for writing tasks. Initially, participants will select high- and low-interest writing topics using a prompt selection procedure. Given 40 potential …

Prediction Models For Estimation Of Soil Moisture Content, Swathi Gorthi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Center for Self-Organizing Intelligent Systems (CSOIS) has been successful in developing personal remote sensing systems. These systems can be further enhanced to monitor important resources of earth such as soil moisture content. Soil moisture is the major component of the soil in relation to plant growth. Soil water dissolves salts and makes up the soil solution, which is important as medium for supply of nutrients to growing plants.

Usually, measuring such physical quantities would include using derived formulas that mathematically describe the relationships between the parameters involved. With the advancements in computer modeling, other methods such as empirical modeling …

Pedestrian Leadership And Egress Assistance Simulation Environment (Please), Kyle D. Feuz

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Pedestrian simulation models are used in many different applications including, the design of safer buildings, the validation of fire codes, and automatic video surveillance and tracking. By improving the simulation model used, each of the application areas can experience similar improvements in accuracy. Current simulation models fail to address key concerns in representing pedestrian knowledge and in accurately modeling group formation. This project has at its core the goal of bringing attention these areas of concern and providing an initial look at ways to solve these problems.

The Pedestrian Leadership and Egress Assistance Simulation Environment (PLEASE) is developed specifically to …

The Relationship Between Family Functioning, Family Resilience, And Quality Of Life Among Vocational Rehabilitation Clients, Kristi P. Openshaw

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

While there has been extensive research on the quality of life for people with disabilities, very little research has been conducted on the way in which families impact the quality of life of these individuals. This study focused on how family dynamics impact the quality of life for people with disabilities who are clients of state vocational rehabilitation agencies. Specifically, family flexibility and cohesion, as well as family resilience, were the independent variables; quality of life was the dependent variable.

It was found that family functioning and family resilience play an important role in the quality of life for people …

The Interrelationship Between The Bio- And Sequence Stratigraphy Of The Middle Cambrian Spence Shale Of Northern Utah And Southern Idaho, Eva Lyon

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This project was undertaken with the objective of discerning the relationship between sea level change and changes in the fauna of the Spence Shale. A combination of field and lab work was employed to undertake this research. The Spence Shale is rich in fossils from the earliest period of visible life on this planet. It provides a unique window onto the evolution of life and changes in the Earth at this time. It is important to study this relationship between sea level and life changes as these conditions are constantly changing, particularly in this day and age. A better understanding …

Effect Of Pseudoephedrine On 800-Meter Run Times Of Ncaa Division I Women Athletes, Caroline Berry

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Pseudoephedrine is an over-the-counter drug commonly used as a decongestant, but also thought to have ergogenic effects. The World Anti-Doping Agency (WADA) has prohibited large doses (> 150 μg∙ml^-1) of pseudoephedrine, while the National College Athletic Association (NCAA) does not include it on the banned substance list. The purpose of this study was to examine the effect of body weight dosing of pseudoephedrine on 800-m run times of NCAA female runners. Fifteen NCAA female track runners volunteered to participate in the randomized, double blind, crossover design. In trials that were a week apart, participants were given both 2.5 …

Determining Co2 Storage Potential: Characterization Of Seal Integrity And Reservoir Failure In Exposed Analogs, Daniel Corey Barton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Sequestration of carbon dioxide (CO₂) into subsurface porous sandstone is proposed as a method for reducing accumulation of anthropogenic emissions of CO₂ into the atmosphere. Natural exposures of reservoir and top-seal pairs in central and southeastern Utah are identified as analogs to proposed CO₂ injection targets. Reservoir and top-seal pairs in natural analog exposures are analyzed in tandem to evaluate evidence for paleo-migration of fluids and/or hydrocarbons from the reservoir through the top seal. The San Rafael Swell and Monument Uplift exhibit similar structure and exposures of Jurassic units yet differ in amount and type of …

Air Demand In Low-Level Outlet Works, Jason Arthur Larchar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Most dams have a low-level outlet that consists of a closed conduit through the dam with a slide gate or valve to regulate flow. These outlets are used mainly for irrigational purposes but also for flushing the reservoir and controlling the reservoir elevation. When discharging through the low-level outlet works, negative pressures can develop on the downstream side of the gate creating a potential for cavitation damage and vibration. To minimize these effects, air vents (vented to the atmosphere) are installed on the downstream side of the gate to limit downstream pressure to something above vapor pressure (i.e., near atmospheric …

Newlywed To Established Marriage: A Longitudinal Study Of Early Risk And Protective Factors That Influence Marital Satisfaction, Daniel Alfred Moen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This current study took questionnaire information from couples as newlyweds through five years of marriage in an attempt to discover the most significant predictors of marital satisfaction.

This study also used additional information from these couples to help understand how problem issues change from newlywed to established marriage (five or more years of marriage). This study found that experiencing a difficult transition to marriage as newlyweds was the only significant predictor of marriage satisfaction five years later. Meaning, couples who experienced a difficult transition to marriage as newlyweds tended to report lower levels of marital satisfaction five years later in …

A Pilot Study Of Solution-Focused Brief Therapeutic Intervention For Couples, J. Wade Stewart

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A program was set to provide two 2-hour relationship consultations for couples. The purpose of this program was to attract couples that would not normally seek traditional therapy and/or relationship enrichment programs. The consultations were scheduled a month apart and were designed to be collaborative; the couple offered ideas for behaviors that they wanted to work on. Before the first consultation, each individual filled out several questionnaires about their relationship. In the initial session, the consultant reviewed the results with the couple pointing out the strengths of the couple. In addition, during the initial session, the couple also collaboratively created …

“I Neither Omit Aught, Nor Have I Omitted Aught”: Embodying A Sovereign—The Resident Ambassador In The Elizabethan Court, 1558-1560, Sarah M. Gawronski

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In November 1558, Elizabeth I ascended the throne of England as a single Queen with Protestant tendencies in a male-dominated Catholic world. Her council believed it was imperative that she marry immediately, and the rest of Western Europe agreed. Catholic suitors sought to bring England back under Catholic control. Protestant suitors hoped for an ally in the religious wars that were ravaging Europe. Even Englishmen sought to become king. Ambassadors from the Spanish Empire, the Holy Roman Empire, and the Baltics and Scotland came to negotiate the suits of their monarchs.

Ambassadorial correspondences are often used as primary source material …