Digital Commons Network^™

Hydraulic Analysis Of Coupling A Labyrinth Weir With A Steep Stepped Chute, Tucker J. Jorgensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

There are many considerations involved in the design of a dam structure. A few of these include minimizing upstream flooding (and risk of embankment overtopping), economical construction, and downstream erosion. Addressing these concerns has, in part, led to a recent increase in the use of more efficient and economical hydraulic. Complex hydraulic structures such as labyrinth weirs and stepped chutes require extensive study to establish design methods. Combining two complex structures can result in dramatic changes in flow characteristics. This is particularly true in the case of combining a labyrinth weir with a stepped chute. Flow from the labyrinth weir …

Assessment Of Compost On Dryland Wheat Yield And Quality, Soil Fertility And Water Availability In Utah, Kareem A. Adeleke

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In 2014-2016 Kareem Adeleke undertook a graduate project under the supervision of Utah State University (USU) Plants, Soils and Climate professors, Drs. Jennifer Reeve, Astrid Jacobson, and Earl Creech. Organic wheat producers face numerous challenges, such as low soil moisture, soil erosion, and low soil fertility. Organic wheat growers generally do not apply fertilizer due to inability to recoup the costs in the short-term. Compost enhances long-term improvement in soil quality, soil fertility and increase yield in low input environments. Understanding of compost carryover effects in dryland wheat systems is necessary for increased yield that will allow adequate supply of …

Hitting The Trail: An Exploration Of An Outdoor Educational Experience At Intermountain West Junior High School, David N. Joy

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Outdoor educational experiences are one of the ways that young people learn about and experience the benefits that are found in the outdoors. However, despite the benefits that outdoor educational experiences have to offer, many young people do not participate for one reason or another. These reasons are often rooted in issues of social injustice. This study adds to about how outdoor educational experiences effect the perceptions of and attitudes toward the outdoors and learning in the outdoors, as well as what may be keeping so many people from participating in these experiences. One junior high school in the intermountain …

Negotiating Identities In Middle School Science: Impacts On Students’ Perceived Expertise And Small Group Participation, Taylor Dexter

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis investigates how students in a linguistically diverse 7^th grade science lab group interact and position each other’s capabilities within a STEM context. These capabilities are discussed in terms of how the identities local to a particular 7^th grade science lab group of “good student” and “scientist” are assigned, challenged, and strengthened. These interactions are instances of identities and patterns (pathways) of identities being negotiated. This thesis’ analysis focuses particularly on how the identities of being Latinx and multilingual affect these negotiations in the terms of the local identities (“good student” and “scientist”). This analysis sheds light …

Perceptions Of Disabilities Among Native Americans Within The State Of Utah, Erica Ficklin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Native Americans are diagnosed with disabilities at a significantly higher rate than the general American population. Due to cultural differences, other factors are likely impacting this difference in diagnosis rates. One possible factor is that Native Americans may have a different definition for ‘disability’ than the general American population. This study aimed to identify whether there is a difference in the definition for ‘disability’ and to learn about the current services available and what changes should be made to better serve Native Americans with disabilities. Native American participants were asked to share their experiences and thoughts about disabilities in sharing …

Mind-It. Introducing Mindfulness Online To Help Students Change Perceptions And Develop Interest: A Design-Based Research Approach, Joana M. Franco

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study aligns with contemporary perspectives on higher education suggesting that learning ought to be holistic, going beyond disciplinary knowledge and seeing students as whole beings, to support them in knowing themselves and integrating a more conscious society. In the attempt to contribute to this vision, this study advocates for incorporating mindfulness meditation—a contemplative practice to train the ability to be fully aware of the present moment with a nonjudgmental and curious attitude—into higher education curriculum. Adopting design-based research, I created and iteratively refined a two-week online course called Mind-IT to introduce mindfulness meditation to graduate students in the Veterinary …

System Level Characterization Of The Gridded Retarding Ion Drift Sensor (Grids) For The Petitsat Mission, Benjamin B. Oborn

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Weather prediction, wherever people live, serves as a beneficial part of everyday life. Weather in the upper portions of Earth’s atmosphere also impacts life on Earth but it is not able to be predicted as well as its terrestrial counterpart. PetitSat is a cube satellite (CubeSat) mission proposed to help remedy this issue. It will collect measurements of charged particles in the upper atmosphere called a plasma. The measurements taken by PetitSat will facilitate better prediction of upper-atmospheric weather. Prediction of when and where weather phenomenon will occur will allow avoidance of negative consequences that can result. Once such negative …

A Thermochronometric, Microtextural, And Numerical Modeling Approach To Deciphering The Rock Record Of Deformation Processes In The Wasatch And Denali Fault Zones, Robert G. Mcdermott

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Fault zones are the primary features that accommodate movement of Earth’s crust, resulting in the formation of mountain belts and damaging earthquakes. Rocks modified by faulting and brought to Earth’s surface by erosion are archives of the mechanical processes involved in earthquakes and(or) aseismic creep. Thermochronometry is a radioisotopic dating system primarily sensitive to temperature and offers a means to constrain dates and rates of thermal processes. Hematite is common in fault zones, amenable to (U-Th)/He (He) thermochronometry, and exhibits distinct microtextures diagnostic of fault zone mechanics. I apply hematite He thermochronometry and microtextural analyses with a suite of other …

Fate Of Pharmaceuticals And Personal Care Products In Duckweed And Waste Activated Sludge Under Aerobic And Anaerobic Solids Stabilization Conditions, Kwame Tweneboah Duodu

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Twelve commonly used pharmaceuticals and personal care products (PPCPs)(acetaminophen, β-Estradiol, caffeine, carbamazepine, DEET, estrone, gemfibrozil, triclosan, TCEP, sulfamethoxazole, progesterone, fluoxetine) were investigated to determine their fate in biosolids. These compounds were selected due to their wide usage, and varying properties, that makes them representative of many other PPCPs.

Commonly used PPCPs (caffeine commonly found in tea, coffee, chocolate and soda, the pain reliever acetaminophen, and the pesticide DEET) were detected in high amounts in the influent of the Hyrum WWTP and Wellsville sewage lagoons. Although conventional WWTPs are not designed to remove PPCPs from wastewater, some PPCPs, such as acetaminophen, …

A Deep Dive Into Natural Swimming Pool Filtration: Living Walls As Technical Wetland Filters, Anna Farb

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Vertical gardens such as living walls can filter air and water, in addition to cooling buildings, reducing noise, increasing urban biodiversity, providing food, and enhancing well-being. Natural swimming pools (NSPs) are an ecologically sound alternative to chemically treated pools, but they have not reached their potential in the U.S. We investigated whether a living wall could be integrated into an NSP system for water filtration purposes, given that the vertical filter would have to produce excellent water quality for human swimmers. This could be a novel landscape design, particularly in the cases of steep contours, urbanized sites with limited space, …

Analytic Guidance Strategies For Passively Safe Rendezvous And Proximity Operations, Simon Shuster

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A safety ellipse is a type of relative motion trajectory that is commonly used for unmanned rendezvous and proximity operations. As the name suggests, safety ellipses are passively safe relative motion trajectories, which means that their natural motion inherently maintains a low collision risk. The focus of this dissertation is the derivation, analysis, and application of guidance strategies that reconfigure, establish, and exit a safety ellipse. The guidance strategies consist of a set of ∆v vectors and impulse times, all written in closed form. Through applications of optimal control theory and parameter optimization, it is shown that these maneuver …

Pre-Eruptive Evolution Of Izu-Bonin Boninite Melts: Mixing, Cooling, And Crystallization, Jesse L. Scholpp

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Subduction is the geologic process in which one tectonic plate moves beneath another as it sinks into the Earth’s mantle. Subduction initiation in the Izu-Bonin Marianas system is the result of a gravitational failure during which one tectonic plate (the Pacific plate) spontaneously sinks beneath another (the Philippne Sea plate). Fluids released by the sinking plate that caused the overlying mantle to melt by reducing its meltimg temperature, forming the Izu-Bonin Mariana island arc system.

The resulting melts initially have the chemical compositions that are rich in silica and magnesia, and highly depleted in other elements, refered to a boninite …

A Systematic Review And Meta-Analysis Of Acceptance And Commitment Therapy In South Korea, Woolee An

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Although psychologists have emphasized the importance of considering clients’ various cultural backgrounds and researching various populations, research is still overly focused on participants from English-speaking countries like the United States and Western countries. Numerous studies evaluating Acceptance and Commitment Therapy (ACT) have been published in South Korea. However, most of the studies are still unknown to English-speaking research communities because of language differences. In order to promote cross-cultural communication of study findings, the current study reviewed treatment research from South Korea.

After searching for Korean ACT studies using Korean electronic databases, 62 studies were selected, and each study’s treatment outcome …

The Dove's Advantage: Impact Of Gender And Conflict On Executive Approval, Micala H. Gillespie

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Do citizens evaluate female vs. male leaders’ foreign policy decisions differently? The number of countries that have had female leaders continues to expand, but little is known about how domestic audiences reward or punish female (relative to male) leaders for foreign policy choices. This study examines how the gender of a national leader conditions the relationship between their hawkish/dovish ideology and public approval for rapprochement policies in militarized interstate conflicts. Results from time-series cross-sectional data using multiple regression models with fixed effects from 31 countries and 127 leaders show that public approval tends to be lower for women leaders and …

Emerging Works On Wireless Inductive Power Transfer: Auv Charging From Constant Current Distribution And Analysis Of Controls In Ev Dynamic Charging, Anindya Chitta Bagchi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Wireless power transfer through inductive coupling, termed as inductive power transfer (IPT), is one of the important technologies in power electronics that enable transfer of power between entities without physical connections. While it has seen significant growth in the areas such as electric vehicle charging, phone charging and biomedical implants, its emerging applications include charging of autonomous underwater vehicles (AUVs) and dynamic charging of electric vehicles from the roadway. This dissertation addresses a few key challenges in these areas of IPT applications, paving the way for future developments.

For the WPT for AUV, the recently developing sea-bed installed marine systems …

Deep Q Learning Applied To Stock Trading, Agnibh Dasgupta

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Developing a strategy for stock trading is a vital task for investors. However, it is challenging to obtain an optimal strategy, given the complex and dynamic nature of the stock market. This thesis aims to explore the applications of Reinforcement Learning with the goal of maximizing returns from market investment, keeping in mind the human aspect of trading by utilizing stock prices represented as candlestick graphs. Furthermore, the algorithm studies public interest patterns in form of graphs extracted from Google Trends to make predictions. Deep Q learning has been used to train an agent based on fused images of stock …

A Study In Gps-Denied Navigation Using Synthetic Aperture Radar, Colton P. Lindstrom

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In modern navigation systems, GPS is vital to accurately piloting a vehicle. This is especially true in autonomous vehicles, such as UAVs, which have no pilot. Unfortunately, GPS signals can be easily jammed or spoofed. For example, canyons and urban cities create an environment where the sky is obstructed and make GPS signals unreliable. Additionally, hostile individuals can transmit personal signals intended to block or spoof GPS signals. In these situations, it is important to find a means of navigation that doesn’t rely on GPS.

Navigating without GPS means that other types of sensors or instruments must be used to …

Land-Use Attitudes And Local Election Choice: Estimating Effects Of Land-Use Attitudes On Municipal Electoral Choice, Scott R. Dresher

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Predicting voter behavior is a difficult task, however there are factors that suggest which candidates will be more successful. This study examined some factors that predict voter behavior in local elections and asks if local land-use authority can be a factor in predicting vote choice. Using survey responses collected from a sample of college students, answers suggest that some factors more strongly influence voter behavior than others. An analysis of survey results suggests that candidate party affiliation alone or candidate land-use attitudes alone are individually significant influences on voter decision making. However, combining effects of candidate party affiliation and candidate …

Job Satisfaction And Employee Turnover Determinants In Fortune 50 Companies: Insights From Employee Reviews From Indeed.Com, Bishal Sainju

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

We explored 682176 employee reviews of Fortune 50 companies from Indeed.com using topic discovery techniques like Latent Dirichlet Allocation (LDA) and Structural Topic Modeling (STM) to identify salient aspects in employee reviews and automatically infer latent topics that tend to drive employee satisfaction. We also studied how various satisfaction factors could be related to employee turnover. We discovered important topics in the reviews, including Management and Leadership, Advancement Opportunity, Pay and Benefits, Work-Life Balance, and Culture, which we compare to the five Job Descriptive Index (JDI) facets. Both LDA and STM discovered well-separated and distinguishable topics. We also …

Soil Health, Phosphorus And Carbon Dynamics In Response To A One-Time Compost Application And Cover Crops In Organic Dryland Winter Wheat, Idowu Ademola Atoloye

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Organic dryland winter wheat (Triticum aestivum) growers in the U.S. are faced with high interannual variability in yields. This is related to the low annual precipitation and low soil fertility on the cultivated soils. Improving soil health is the key to increasing and maintaining crop yields. In this study, we compared the effects of different rates (0, 12.5, 25 and 50 Mg DW ha^-1 compost and 2 Mg ha manure^-1) of large quantities of steer manure compost and the inclusion of cover crops versus fallow on soil health and on carbon and phosphorus dynamics in …

Self-Describing Fiducials For Gps-Denied Navigation Of Unmanned Aerial Vehicles, Amanda J. Strate

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Accurate estimation of an Unmanned Aerial Vehicle’s (UAV’s) location is critical for the operation of the UAV when it is controlled completely by its onboard processor. This can be particularly challenging in environments in which GPS is not available (GPS-denied). Many of the options previously explored for estimation of a UAV’s location without the use of GPS require more sophisticated processors than can feasibly be mounted on a UAV because of weight, size, and power restrictions. Many options are also aimed at indoor operation without the range capabilities to scale to outdoor operations. This research explores an alternative method of …

The Role Of The Recently Deorphanized G-Protein Coupled Receptor, Gpr171, In Morphine Tolerance And Withdrawal, Leela Afrose

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Opioid analgesics, such as morphine, represent the gold standard pain killer and the most frequently used drugs for the treatment of moderate to severe pain. Despite being a potent analgesic, morphine has unwanted and dangerous side effects with repeated use, such as tolerance and withdrawal. Tolerance is a state when a person no longer responds to a drug and a higher dose is required to achieve the same initial pain relief. Withdrawal is a set of undesirable psychological and physiological symptoms that occur after someone stops taking a drug or reduces the dose. Morphine tolerance and withdrawal play a vital …

Molecular Mechanisms And Design Of Hydrogen-Bonded Materials For Thermal Applications, Jinlong He

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Heat transfer at the nanoscale plays an important role in determining the reliability and performance of many innovative advanced materials technologies such as nanoelectronics, semiconductor, biomedical devices, polymers, and composites. Extensive efforts have been made to design materials with extraordinary thermal properties. However, fundamental understanding of heat transfer in many of these materials is still not lacking, because the thermal transport processes are governed by several factors including molecular morphology and chemical bonding. Among these factors, the atomic bonding between two dissimilar materials or within single materials is of particular interest due to its ubiquity and importance in physical processes. …

Effects Of Effort Training On Effort-Based Impulsive Choice, Sara Peck

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Because impulsive decision-making is correlated with many maladaptive tendencies, researchers have increasingly studied methods for reducing impulsive choice. Most research in this area has focused on reducing delay-based impulsive choice, as measured by choices between smaller, immediate or larger, delayed rewards. A second type of impulsive choice is selecting a smaller, less-effortful reward over a larger, more-effortful one. Little nonhuman research has examined experimental methods for reducing effort-based impulsive choice. Within the realm of delay-based impulsive choice, extended exposure to reinforcer delays has proven effective in reducing impulsive choices in rats. The current study took a similar tac by evaluating …

Leadership Styles And Barriers To Leadership For Women In Agriculture: A Mixed Methods Study, Erica Ramsey Louder

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Women are a growing demographic in agriculture, yet women holding positions in agricultural leadership is limited. This research sought to identify the ways women in agriculture lead by examining their leadership styles and the barriers they face as they strive to advance within their professions.

The results show that women are relationship-based leaders and that there are significant barriers that inhibit women’s advancement in agriculture. Many of these barriers are related to gender bias, self-perception, and life issues such as stress and workload.

Acquisition, Processing, And Analysis Of Video, Audio And Meteorological Data In Multi-Sensor Electronic Beehive Monitoring, Sarbajit Mukherjee

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In recent years, a widespread decline has been seen in honey bee population and this is widely attributed to colony collapse disorder. Hence, it is of utmost importance that a system is designed to gather relevant information. This will allow for a deeper understanding of the possible reasons behind the above phenomenon to aid in the design of suitable countermeasures.

Electronic Beehive Monitoring is one such way of gathering critical information regarding a colony’s health and behavior without invasive beehive inspections. In this dissertation, we have presented an electronic beehive monitoring system called BeePi that can be placed on top …

Micro Grid Control Optimization With Load And Solar Prediction, Shaju Saha

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Using renewable energy can save money and keep the environment cleaner. Installing a solar PV system is a one-time cost but it can generate energy for a lifetime. Solar PV does not generate carbon emissions while producing power. This thesis evaluates the value of being able to make accurate predictions in the use of solar energy. It uses predicted solar power and load for a system and a battery to store the energy for future use and calculates the operating cost or profit in several designed conditions. Various factors like a different place, tuning the capacity of sources, changing buy/sell …

Systems Thinking In Engineering Design: Differences In Expert Vs. Novice And Relationship To Personality Traits, Yuzhen Luo

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Systems thinking is the ability to see the big picture and the related elements when designing, and how these relationships form the big picture. In engineering design, systems thinking is valuable to both industry, as well as engineering education. As such, it creates opportunities for researchers to better understand systems thinking of both professional engineers in industry, who are assumed to be the experts, and engineering students in higher education, who are assumed to be the novices. The purpose of this study was to compare and identify the differences between expert and novice systems thinking in engineering design. Additionally, the …

Effects Of Premortem Stress On Heat Shock Protein Abundance, Oxidation, And Color In The Longissimus Lumborum Of Holstein Steers Following Harvest, Reganne K. Briggs

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Consumers consider tenderness and steak color to be two important attributes associated with meat quality. However, inconsistencies in both tenderness and steak color remain despite similar production practices of beef cattle. Stressful events before harvest may impact meat quality by initiating certain pathways such as abundance of heat shock proteins (HSP) and oxidation within the skeletal muscle. Heat shock proteins have been associated with tenderness while oxidation may affect steak color and flavor. In this study, 40 Holstein steers were administered adrenocorticotrophic hormone (ACTH) to mimic a stressful event before harvest. Animals were harvested at different times following the ACTH …

Development Of Molecular Sensor And Imaging Analysis Techniques For Improving Life Quality, Wei Zhang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As life science advances, we are getting closer and closer to understanding the truth about life. Some specific cell types or molecules play a vital role in regulating routine functions of life. The imperceptible changes of these critical components can lead to serious diseases. Traditionally, histopathological techniques are widely employed to study and diagnose human diseases. However, these methods are time consuming and invasive. Herein, we introduce multiple types of biosensors that are sensitive, easy to use and most importantly non-invasive. First, I developed a smartphone based colorimetric sensor for detection of water hardness in a convenient way by introducing …