Digital Commons Network^™

An Evaluation Of Landscape, Climate, And Management Impacts On Bumble Bees (Hymenoptera: Apidae: Bombus) In Agroecosystems, Morgan Elizabeth Christman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Bumble bees play pivotal roles in pollinating wild and cultivated plant communities. Unfortunately, bumble bee populations are declining due to disturbances such as landscape conversion and climate change. Additionally, traps used to monitor pest insect populations often capture bumble bees, leading to a concern that trap captures increase bumble bee mortality. First, I studied bumble bee communities based on land cover and weather variables in agricultural fields in Utah. Bumble bee communities were more diverse in agricultural fields with more agricultural land in the surrounding area, low temperatures, and high humidity during the growing season, and less diverse in fields …

Reconstructing The Practical Theory Of Communication In Dating Matters: Examining Teen Dating Violence Prevention From A Communicative Approach, Diana Costanzo

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Teen Dating Violence (TDV) has lasting impacts on teens’ health and well-being. Dating Matters: Strategies to Promote Healthy Teen Relationships (DM), a curriculum published by the CDC in 2019, seeks to mitigate the consequences of TDV and promote healthy relationships. Using Grounded Practical Theory (Craig & Tracy, 1995, 2014), this paper analyzes how DM conceptualizes communication. Specifically, I explore and critique how DM discusses topics related to communication and conflict. The findings of the analysis show that DM focuses on sending the right message in communication. In DM, parents and teens are encouraged to “talk it out” or “speak up” …

Skeletal Muscle Growth Of Beef Cattle: Cattle Breed Types And Anabolic Implants, Caleb C. Reichhardt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Two potential methods that can be used by the U.S. to help further improve environmental and economic sustainability of the beef industry are through the use anabolic implants, typically composed of the hormones estradiol and trenbolone acetate, and by crossbreeding Bos taurus and Bos indicus cattle. How anabolic implants operate to improve growth, and their resulting relationship with different cattle breed types have yet to be determined. However, crossbreeding these cattle breed types has been found to have a positive influence on economically important traits such as average daily gain and carcass characteristics. Therefore, we hypothesized that the different hormones …

Using Computational Fluid Dynamics To Predict Flow Through The West Crack Breach Of The Great Salt Lake Railroad Causeway, Michael Rasmussen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Great Salt Lake in Utah, USA, is a terminal, saline lake and is divided into two primary sections (northern and southern) by an east-to-west railroad causeway. Shortly after completion of the earth-fill causeway in the late 1950s, the two sections became dramatically different with differences in water surface elevation and water density. These differences cause the formation of a unique flow behavior commonly referred to as a density-driven exchange flow or bi-directional flow; a behavior observed in other lake and ocean settings where two fluids of differing densities interact. Measuring these exchange flows is a priority for lake managers …

Institutional Betrayal Related To Sexual Trauma In Military Service Members And Veterans: An Examination Of Posttraumatic Sequelae, Felicia Andresen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Military sexual harassment and/or assault (MSH/A) is pervasive and destructive. MSH/A survivors who believe the institution played a role in the traumatic experience by failing to respond in a supportive manner or for failing to keep them safe may feel betrayed by the military itself, a concept referred to as institutional betrayal. Previous research suggests it is more harmful to be abused by trusted others or institutions due to the violation of trust. This two-study dissertation explored experiences of MSH/A-related institutional betrayal to identify survivors at-risk for worse posttraumatic outcomes.

Study #1 evaluated whether PTSD explained the relationship between …

Teacher Home Visits: Changes In Perceptions Of Key Stakeholders, Kevin R. Thomas

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Teacher home visits have been shown to improve student attendance, academics and to reduce behavior issues. Three groups are involved: the student, the teacher, and the family (or parent). This research focused on determining if and how the teacher home visit changes the perspectives, expectations, and relationships of these three groups. A survey followed by interviews of some of the students, parents, and teachers was used. The surveys and the interviews were evaluated. Results indicated that perceptions and relationships between stakeholders were improved. Due to low participation rates, results must be interpreted with caution. With these considerations in mind, I …

Bugs Buy Steady Releases From Hydropower Producers To Encourage More Synergistic Reservoir Management, Moazzam Ali Rind

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Hydropower generated from dams has significant economic value, however, that value is achieved at the cost of native ecosystem devastation. Here, we have estimated loss in hydropower revenue due to inclusion of the steady low flow days –Bug Flow Experiments. We developed a linear optimization model and constraint method that restrict the number of steady low flow days while maximizes the hydropower revenue generation. The results suggested that increase in release volume will benefit both the objectives (win-win scenario), energy price differential between on-and off-peak periods controls the position and shape of tradeoff curves, and offset release does not have …

Evaluating Microbial Safety Of Food Products And Processes In Small Scale Food Services, Processors And Manufacturers, Sujan Acharya

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study evaluated microbial safety of relatively new and modified food products prepared especially by small-scale foodservice establishments and home producers. In the first part, microbial safety during fermentation at room temperature was evaluated. Chapter 3 monitored Listeria monocytogenes and Escherichia coli O157 survival during Sauerkraut’s natural fermentation. Chapter 4 evaluated the survival of acid-adapted E.coli O157 during kombucha fermentation and in kombucha-fruit blend during refrigeration. During both fermentations, the pathogens were inactivated before the recommended duration of fermentation. However, E.coli O157 introduced after fermentation survived in kombucha-fruit blends during refrigerated storage. The second part (Chapter 5) evaluated the safety …

Parent Work-Family Balance And Adolescent Psychosocial Well-Being During The Covid-19 Shutdown, Shailey Woodward

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Parents who work have many responsibilities to fulfill. They may encounter frustration and exhaustion, which can impact how well they parent. Experiences such as financial strain and the COVID-19 shutdown may further impact parenting. At the same time, adolescents are establishing identities and need attentive parents to help them develop healthy psychosocial well-being. Using Erikson’s (1968) psychosocial theory of development as a backdrop, the purpose of this study was to observe the relationships between parent work-family balance, parenting satisfaction, and adolescent psychosocial well-being within the context of financial stress and the COVID-19 shutdown. I found that parent and adolescent perceptions …

A Social-Ecological Approach To Understanding The Structure, Function, And Challenges Faced By Fisheries, Chase C. Lamborn

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Fisheries throughout the world play many important roles, and they are also subject to many pressures. The tension between roles and pressures is increasing, and as a result, many fisheries are being utilized to, or over their capacity, which ultimately threatens their sustainability. To address these challenges, this dissertation provides insights and tools to help us better understand fisheries and the challenges they face. The first study explores the impacts of an earlier spring runoff in Montana. Earlier runoff has resulted in lower and warmer summer flows, which is stressing coldwater species like trout. This stress is affecting fishing quality, …

Emotional Support Animal Partnerships: A Multimethod Investigation, Jillian Ferrell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Emotional Support Animals (ESAs) are increasing in prevalence and awareness, though not all the publicity and attention have been positive. Many people, including housing officials, persons with disabilities, health professionals, and the general public are confused about the roles and rights of ESAs. Misunderstandings, lack of awareness, and fraud have led to dangerous and inappropriate situations for humans and animals alike despite overwhelming evidence of powerful therapeutic benefits of the human animal bond.

Three studies provide insight into various perspectives involved in ESA partnership experiences and development. Each study provides a theoretical, quantitative, and qualitative approach, respectively, to explore the …

Conservation Conflict: Rare Plant Conservation And Energy Development And Potential In The Colorado Plateau, Joshua Carrell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Colorado Plateau provides numerous sources of energy, particularly natural oil and gas. This energy potential is being actively extracted for consumption on both public and private lands. Elements of biodiversity (e.g., listed and sensitive plant and animal species) are distributed among all land tenures, yet the laws protecting them can vary depending if they occur on public, private, or tribal land. Therefore, it is necessary to understand the geographic ranges of threatened, endangered, and sensitive species and their relationship to land ownership to preserve habitat and conserve species populations. I developed species distribution models (SDMs) to examine the predicted …

The Effect Of Species Choice, Seed Mix Composition, And Microtopography On Native Plant Restoration In Great Salt Lake Wetlands, Coryna Hebert

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Wetlands are important ecosystems that improve water quality, prevent floods, and provide wildlife habitat. As such, restoring native plants that promote wetland health is a high priority for land managers. However, there are many challenges to the restoration of native plants. In our study system (Great Salt Lake wetlands), many areas are invaded by the European grass, Phragmites australis. Phragmites grows in dense stands and displaces native plants. The reduction of native plant communities in Great Salt Lake wetlands is a major concern because these ecosystems provide habitat for millions of native birds. Managers have made successful efforts to …

Modeling A Pandemic: Investigating Student Learning About Disease Spread In The Context Of Agent-Based Modeling, Siyu Wu

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The COVID-19 pandemic has highlighted a need for students to learn about public health issues, including the transmission of disease and methods for the prevention of epidemics. This study presents data from a project focused on developing computational microworlds to help middle school students learn about these topics. The microworld is designed to help students model and test their ideas about how a disease spreads through a population and how an epidemic can be prevented. I employed a lab-based case study approach to conduct one-on-one 1.5-hour interviews through Zoom with four middle-school students (ages 12-14). During the interview, the student …

Natural History And Development Of Melittobia Acasta On Megachile Rotunda , Alan R. Anderson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Alfalfa is one of the most economically important crops in North America. To produce alfalfa seed, a pollinator must release plant reproductive organs by applying pressure to keel petals. The alfalfa leafcutting bee, Megachile rotundata, is the primary commercial pollinator of alfalfa. U.S. bee managers struggle to maintain populations due to many mortality factors. One cause is attack from parasitoid wasps such as Melittobia acasta. Females can lay hundreds of eggs and have multiple generations, which can decimate bee stocks. Chapter Two investigates the life cycle and base temperature that allows development of M. acasta on bee hosts. …

Evaluation Of Noninvasive Methods For Determining Pregnancy, Diet, Nutrition, And Stress Among Pronghorn Antelope: Implications For Population Monitoring, Cole Bleke

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was conducted to increase our understanding of the influence of adult female pronghorn (Antilocapra americana) physiology on fawn summer survival. Pronghorn are a valued big game animal in Idaho, but are particularly sensitive to capture; therefore, we designed a noninvasive fecal sampling study to measure pregnancy (progesterone and estrogen), diet, nutrition (fecal nitrogen and DAPA), and stress (cortisol), during metabolically-demanding female life history stages (late gestation, early lactation, and breeding season). We also compared survey results between ground and aerial methods within mountain valley landscapes.

Pregnancy determination, via progesterone, is possible for pronghorn, but sample collection …

Hidden Mechanisms Of Climate Impacts In Western Forests: Integrating Theory And Observation For Climate Adaptation, Sara J. Germain

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Fire, insects, and disease are necessary components of forest ecosystems. Yet, climate change is intensifying these tree stressors and creating new interactions that threaten forest survival. This dissertation combined field observations with statistical predictions of changing disturbances in western forests to identify 1) how conventional models may underestimate future forest loss, and 2) how positive relationships between trees may be exploited by managers to prevent forest loss.

In Chapter II, I tested whether increasingly extreme weather with climate change increases Pacific yew extinction risk. I found that conventional modeling methods underestimated local extinction risk because trees were adapted to a …

Psychosocial Development In Adolescents With Disabilities: Modification And Evaluation Of Measures, Myles Maxey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Adolescents with intellectual and developmental disabilities (IDD) are often overlooked in research, including psychosocial development (self-esteem, autonomy, attachment, and identity formation). Reliable and consistent survey tools are essential to understanding developmental trends. This study focused on creating surveys that could be comprehended by all adolescents, no matter if they experience IDD or not. Findings from this study suggested that there are more similarities than difference across areas of psychosocial development among adolescents with IDD as well as with their typically developing peers. These findings can help researchers more accurately assess psychosocial development for more adolescents, including those experiencing IDD.

Initial Development And Validation Of A New Measure Of Students' Social-Emotial Competencies, Stephanie A. Vinal

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In order to support student success, schools and researchers are targeting non-academic skills, termed social-emotional learning. Social-emotional learning (SEL) represents the process by which students develop critical thinking and problem-solving skills, establish healthy and positive relationships, and identify as well as regulate emotions. Research shows SEL interventions are effective in decreasing student problems (e.g., anxiety, depression, low motivation; Barry et al., 2015; Corcoran, et al., 2018; Durlak et al., 2011; Weare & Nind, 2011) and increasing positive student outcomes (e.g., academic success, personal growth; Merrell, 2010; Zins et al., 2007). Although SEL is gaining popularity among practitioners and researchers, there …

A Single-Case Experimental Investigation Of Sketch And Speak Expository Intervention For Adolescents With Language-Related Learning Disabilities Via Telepractice, Amy K. Peterson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study investigated the effects of Sketch and Speak expository language intervention for adolescent students with language-related learning disabilities (LLD). Students with LLD have trouble understanding and using academic language for reading and writing and often benefit from explicit instruction in these areas. Sketch and Speak is an expository language intervention that teaches students to take notes in two forms and to systematically use oral practice to facilitate understanding and memory of notes. First, students learn to take notes using simple sketch writing, or pictography, which allows them to focus on the ideas of the text rather than the spelling, …

Passage Probability Of Woody Debris Elements And Accumulations At I- And V-Shaped Rock Weirs, Kathryn Margetts

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The transport and accumulation of driftwood or large woody debris (LWD) in mountain streams is a natural part of catchment health and river connectivity. At hydraulic structures, the presence of LWD may impact flow efficiency and influence upstream water depth. LWD has been studied at a variety of spillways and weir types, however, little is known about its interaction at rock weirs. This study investigated factors affecting the passage of individual LWD elements and any LWD accumulations at rock weirs, as well as potential impacts upstream of LWD accumulations through field-informed scaled model testing. Observations of LWD at rock weirs …

Stewards And Conservationists: Merging Moral Norms And The Theory Of Planned Behavior To Understand Altruistic Conservation Behavior Among Hunters In Southwestern Utah, Jacob C. Richards

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The leading cause of mortality in California Condors (condors) is lead poisoning, which occurs when condors ingest lead-based ammunition left in carcasses. As a critically endangered species with approximately 115 individuals remaining in the American southwest, increasing the adoption of non-lead ammunition is essential to the recovery of the species. In Utah, the Division of Wildlife Resources (DWR) uses communication with hunters as the primary tool for increasing the adoption of non-lead ammunition in southwestern Utah. In this research, we use social science theory and data collected from a survey of hunters throughout the region to develop a strategic communication …

Investigating Factors That Impact Income Generation And Distribution In Western National Park Gateway Communities, Elizabeth Depew

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Many rural towns in the western united states have come to be defined by high levels of tourism, seasonal residents, and migration driven by the desire to be close to natural amenities and the higher quality of life they afford. This shift is especially apparent in communities that are “gateways” to natural amenities such as national parks. Embracing this shift towards the “New West,” many community planners have heralded amenity-led development as a remedy to the waning feasibility of relying on agriculture and extractive industries. However, anecdotal evidence and several case studies indicate the factors which make these gateway communities …

Spatiotemporal Data Augmentation Of Modis-Landsat Water Bodies Using Generative Adversarial Networks, Ashit Neema

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The monitoring of the shape and area of a water body is an essential component for many Earth science and Hydrological applications. For this purpose, these applications require remote sensing data which provides accurate analysis of the water bodies. In this thesis the same is being attempted, first, a model is created that can map the information from one kind of satellite that captures the data from a distance of 500m to another data that is captured by a different satellite at a distance of 30m. To achieve this, we first collected the data from both of the satellites and …

Masculinity, Affirmations, Belongingness, And Resiliency In Male Adolescents: Effects On School Engagement, Kelsey Burt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study focused on male adolescent students within 7^th and 8^th grade and how endorsement of masculine stereotypes impacts their school engagement and feelings of belonging. The study also examines how peers maintain masculine conformity and how individual resiliency change outcomes. This research is based on two main theories, inclusive masculinity and social learning theory. These theories describe how behaviors are largely learned from the social environment and maintained due to reinforcement or punishment. There were 127 adolescent males who participated in this study and were recruited through an online survey system. Results of the study show that …

Changes In Healthy Eating And Physical Activity Behaviors Of Adult Participants In Create Better Health's Education (Snap-Ed) Program, Kami Bullock

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to compare the effects of delivery method on the nutrition, food resource management (FRM), and physical activity behavior of participants enrolled in either Create Better Health’s in-person or online courses. The pre-survey and post-survey included data on nutrition, FRM, and physical activity behaviors. The researcher analyzed preexisting data from 138 SNAP-eligible adults who participated in Create Better Health’s online and in-person courses.

Results showed similar improvements in most of the nutrition and physical activity behaviors among those who took the CBH courses online or in-person. The online course showed statistically higher scores for four …

Upstream Methods For Enhancing Engineered Curcumin Biosynthesis, Caleb D. Barton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Curcumin is a bright orange compound with myriad applications for human health and wellness. Curcumin occurs naturally in the plant Curcuma longa (commonly known as turmeric) but must be extracted from the roots in an environmentally unfriendly fashion to obtain commercially relevant amounts of the compound. In addition, extraction of curcumin from turmeric spice yields a mixture of various curcuminoids, presenting an issue for isolating it in its pure form and complicating its use in clinical settings.

Heterologous biosynthetic production of curcumin in Escherichia coli has been used extensively as a viable alternative to plant extraction but suffers from poor …

Evaluating The Effectiveness Of A Task Analysis Data Sheet Protocol In Training Educators To Use The You/Me Game During Direct Instruction Reading Groups, Mckenzie Niebergall

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Teachers often struggle with classroom management during academic lessons. Self-adapted efforts to improve classroom management are often not founded on researched behavioral principles. These struggles and efforts impact student behavioral and academic outcomes. The You/Me game is a game included in many Direct Instruction curricula, specially sequenced curricula that encourage positive classroom management and the gaining of academic skills, as a means to reward students for correct academic performance. This study examined the effectiveness of providing a sheet of specific written instructions and allowing for clarifying questions in training four general educators to implement the You/Me Game for classroom management …

Finding Relationships Between Physical Properties Of Butter And Water Loss, Annalisa Jones

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Butter is a desirable fat rich product used for laminated pastries, like croissants, because of its flavor and consumer acceptance. However, butter has some functional aspects that reduce its performance and quality. In manufacturing of butter for laminated pastries, large blocks of butter are pushed through a rectangular opening to form a thin sheet. In this process it is not unusual to see water dripping, indicating water loss in the butter. The purpose of this study was to understand the properties of butter and their role in water loss during processing.

The properties of commercial butters were tested to understand …

Aging Bison Teeth With A Gis: A New Tooth Age Prediction Methodology And Its Archaeological And Ecological Implications, Andrew Edward Owens

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Archaeologists use teeth to estimate the age an animal died based on tooth eruption, growth, and wear. Animal age estimations then inform archaeologists about when and why archaeological sites were occupied. However, to date, no concise and repeatable practice exists to age estimate teeth. Therefore, we propose a new tooth age estimation methodology, in this case using bison teeth. The new tooth aging method uses GIS mapping software to draw tooth surfaces and then calculate tooth surface areas of known-age bison teeth. Then, this known-age tooth sample is used to derive algebraic equations that can estimate the age of prehistoric …