Digital Commons Network^™

Survey Of Insect Pests On Cut Flowers In Utah, Elliot Roberts

Undergraduate Honors Capstone Projects

Cut flower production is a relatively new industry in the state of Utah, gaining momentum by 2020. However, little research concerning management of the crops and their pests has been conducted. One issue producers face are insects that harm the plants in ways such as feeding damage and transmission of diseases. Currently, it is unknown which insects target different species of cut flowers in Utah. Morphological identification of genera and species is often difficult or impossible because of the small size of many of the insects and minute differences between species. This project uses PCR and DNA sequencing to identify …

Death In A Small Town, Christine Cooper

Undergraduate Honors Capstone Projects

Today, those who experience the loss of a loved one are far removed from the process of nursing the dying and watching over the dead. These tasks are relegated to professionals with specific education, certifications, and licensing. With advances in medical technology and hospitals in most communities staffed with well-trained doctors and nurses, the process of dying is more prolonged than that of the late-19th and early-20th centuries in rural small towns. Additionally, with the rise of the death care industry family involvement is often limited to choosing a casket and organizing services. In some ways death has become an …

To Bee Or Not To Bee: Investigating Pesticide Behavior Inside And Outside Of Semi-Field Cages, Mallory Bingham

Undergraduate Honors Capstone Projects

Bees play an important role in ecosystems and food production through pollination. One such bee, the alfalfa leaf cutting bee (ALCB) is a very efficient pollinator and is essential in alfalfa seed production. However, bees face increasing harm, most notably due to the deleterious effect of pesticides used in agriculture, and much research is dedicated to investigating the extent of effects that pesticides have on different bee populations. One common tool used to study the effects of pesticide exposure on bees is semi-field cages. These cages have some key advantages, such as restricting bee foraging to plots sprayed with pesticides …

Evaluating The Self-Healing Capabilities Of Engineered Cementitious Composite Mixtures, Emma W. Baggett

Undergraduate Honors Capstone Projects

Engineered cementitious composites (ECC) is a class of ductile fiber-reinforced concrete designed to exhibit strain-hardening and multiple fine microcracking, instead of large brittle cracks, under tensile loading. The presence of high volume of non-hydrated cement particles in ECC have demonstrated self-healing potential of cracks in ECC. This study evaluates the influence of two ECC additives, limestone powder and crumb rubber, on the self-healing performance of ECC. Three ECC mixture designs were developed: a control mixture, a limestone powder-modified mixture and a crumb rubber modified mixture. Self-healing was monitored over a period of 90 days under alternating wet and dry conditions …

Domestic Challenges, Cultural Factors Driving Ecuador's Authoritarianism Acceleration, Benjamin F. Berlin

Undergraduate Honors Capstone Projects

Using the Cultural Topography (CTops) methodology, this paper provides insight to US policymakers into the cultural factors, combined with current domestic challenges, that are driving Ecuadorians toward authoritarianism. The CTops methodology requires practitioners to conduct primary research on a specific group, which is the population of Ecuador in this paper. To conduct this research, cultural texts and artifacts such as newspaper articles, monuments honoring national heroes, websites and blog posts, and many others were analyzed. Secondary research and an evaluation of current operational realities were also used to inform this paper. Once considered an “Island of Peace,” Ecuador is in …

Tax Increment Financing: A History And Analysis Of Its Success And Failure, Justin Cederlof

All Graduate Reports and Creative Projects, Fall 2023 to Present

Tax increment financing (TIF) is used by cities and towns to subsidize projects within their jurisdictions. The name derives from the growth in the tax base that a (re)development is theoretically responsible for. The increase in tax revenue is directed to funds to pay for the project. TIF is used in 49 U.S. states and each state has unique legislation for its use of it, though there are large similarities between states on how it’s implemented. Research suggests mixed results with whether or not the increase in the tax base is enough to pay off how much money went toward …

Engineering Planktonic And Biofilm Microalgae Systems For Productivity, Power Requirements, Cost, And Scalability, Dallin Chugg

All Graduate Reports and Creative Projects, Fall 2023 to Present

Microalgae cultivation offers dual benefits as an effective wastewater treatment method and a sustainable source of valuable bioproducts, such as biofuels, bioplastics, and feedstocks. This approach supports sustainability by transforming waste into high-value products while minimizing environmental impact. However, scaling microalgae cultivation to industrial levels presents significant challenges, particularly in optimizing harvesting efficiency, reducing mixing and transport costs, and managing large water requirements.

This report compares the productivity, scalability, cost, and energy requirements of two primary cultivation systems: planktonic and biofilm. Planktonic systems, such as open raceway ponds (ORPs), excel in light distribution and nutrient uptake due to continuous mixing, …

Evaluating The Economic Viability Of Feeding Hydroponic Barley Fodder To Growing Wethers, Fallon Johnson

All Graduate Reports and Creative Projects, Fall 2023 to Present

As the livestock industry combats challenges including rising feed costs and ensuring sustainable production practices, some attention is being given to hydroponic fodder as a feed source. Hydroponic fodder offers a potential alternative to traditional feed sources. Research has demonstrated hydroponic fodder production has increased water efficiency while providing a sustainable green feed source throughout the year. This study seeks to understand how using hydroponically produced barley fodder in a total mixed ration for growing wethers compares economically to feeding traditional feed sources. A stochastic simulation model is used to determine the expected total feed costs, costs of gain, and …

Aleci: An R Package For Non-Parametric Confidence Intervals On Accumulated Local Effects Plots, Matthew R. Lister

All Graduate Reports and Creative Projects, Fall 2023 to Present

Machine learning models can take a collection of inputs and craft an output. The mathematical formulas these models use to calculate their outputs easily become too complex or time consuming for a human to analyze. Collectively, we refer to these as black box models. Accumulated local effects plots (ALE) are a method for adding interpretability and visibility into the effects that individual variables contribute to the predictions made by black box models. The method designed by D.W. Apley calculates equally spaced point estimates of the response value to construct a graph across the range of the variable of interest. AleCI …

An Invitation To Language: Fostering Critical Language Awareness Through Assignment Design, Amrutha Smith

All Graduate Reports and Creative Projects, Fall 2023 to Present

First-year composition (FYC) instructors are often required to teach institution-issued course outcomes alongside their personal values. The author proposes a pedagogy to identify how teachers can invite rhetorical and linguistic agency in student writers and teach toward institutional objectives. To do so, the author shares her approach for revising existing and creating new FYC assignments that invite students to use their multiple codes and languagings (ways of communicating) in their writing. The assignments are driven by translanguaging approaches in writing instruction, specifically code-meshing and Critical Language Awareness (CLA), a theoretical framework coined by Shapiro, and integrate three settings in which …

Building Bridges And Breaking Barriers: Instructional Videos For Intercultural Communication, Morgan M. Lankford

All Graduate Reports and Creative Projects, Fall 2023 to Present

I've created instructional YouTube videos focusing on Intercultural Communication. My goal was to make academic material/learning accessible to the general public. I have completed the background research, the script writing and editing, the filming and video editing, and it has been a learning curve. However, I’ve been able to translate academic information in such a way that more people can understand it and learn from it. As people watch these academic videos, they will not only learn facts and terms about intercultural communication, but more importantly they will learn how to be more understanding people. They will learn to be …

How Does Fiscal Decentralization Shape Corruption?, Sharandy G. Appiah

All Graduate Reports and Creative Projects, Fall 2023 to Present

In this paper, I offer a comprehensive review of the impact of fiscal decentralization on corruption. Corruption has been a big hindrance to development, it undermines the inflow of foreign direct investment and even affects education. The literature on fiscal decentralization and corruption has conventionally argued that fiscal autonomy for local officials lowers corruption whereas most recent papers have found that fiscal decentralization increases corruption. I identify four possible pathways through which fiscal decentralization affects corruption and address possible reasons for the difference in findings in the literature. Understanding the mechanisms through which fiscal decentralization shapes corruption at the national …

Correlative Assessment Of Demographic Markers And Health Insurance On Self-Reported Health Status, Ismat Ara Sharin Sajnee

All Graduate Reports and Creative Projects, Fall 2023 to Present

This study investigates whether known demographic groups report poorer health status even after adjusting for health insurance. Research analyzes the factors that correlate with poor reported health status and demographic markers associated with inequitable healthcare access. Sealy-Jefferson et al. (2015) explores the rate of health insurance as a primary mechanism to mitigate the financial risk of accessing health care, but significant racial and ethnic health disparities continue to exist among insured populations.

This study uses pooled cross-sectional data from the National Health Interview Survey (NHIS) from 2019 to 2023 and simple linear regression models to examine the relationship between demographic …

Bomb Calorimeter As Proof Of Concept For Low-Cost Calorimeter To Measure Thermal Runaway In Pouch Cells To Facilitate Statistical Characterization, Mykell Johnson

All Graduate Reports and Creative Projects, Fall 2023 to Present

Transportation is becoming increasingly electrified, with the main energy storage system being lithium-ion (li-ion) batteries. Despite the widespread adoption of li-ion batteries, unique design abuse tolerance concerns need to be addressed, specifically regarding the catastrophic exothermic release of energy, called thermal runaway (TR). While TR is a major design consideration in all li-ion applications, it presents unique difficulties in the electric aviation industry. The Federal Aviation Administration (FAA) considers thermal runaway inevitable in a battery pack and requires containment of the event per DO311-A for certified aircraft. Due to the wide variability of TR, designing for this phenomenon can be …

"Death Is The Fifth [Season], And Master Of All": Necropolitical Violence And/As Environmental Violence In The Fifth Season, Mason T. Goodrich

All Graduate Reports and Creative Projects, Fall 2023 to Present

While many scholars have already described N.K. Jemisin’s Hugo Award-winning speculative novel The Fifth Season as one that highlights intersections between race, settler-colonialism, neoliberalism, and, most frequently, climate change, I apply a necropolitical lens to The Fifth Season in order evaluate a relationship that exists between systemic violence and environmental degradation. The Fifth Season depicts a socially inscribed relationship between an othered race of humans, called orogenes, and the land, anthropomorphized as “Father” Earth. Orogenes have a paradoxical social status: they are simultaneously feared and revered for their ability to control the Earth. This paradox is the impetus for many …

Gravity Wave Breaking Over Northern Utah With An Advanced Mesospheric Temperature Mapper And Sodium Lidar, Eric Davis

All Graduate Reports and Creative Projects, Fall 2023 to Present

Considerable progress has been made in recent decades in the understanding of gravity wave (GW) dynamics. However, there remain important aspects and effects that are poorly understood. In particular, the coupling and deposition of their energy and momentum into the mesosphere lower thermosphere (MLT) region and the interaction and instability dynamics that are directly associated with GW breaking. Using an Advanced Mesosphere Temperature Mapper (AMTM) several strong wave breaking events were observed in the summer of 2015 at USU’s BLO research station. These events have exhibited high momentum fluxes and associated strong wave breaking, prompting detailed data analyses. Rossby waves, …

“How Can I Make This Real Life?”: Realism, Politics, And Simulational Rhetoric In Video Games, Samuel Rowles

All Graduate Reports and Creative Projects, Fall 2023 to Present

Video games are becoming an increasingly relevant aspect of modern culture, both shaping discourse around topics of labor, play, and art, and being shaped by the society they are created within. Scholars have examined the link between video games and player behavior since the 1990s and found that there is little concrete proof that video games alter behavior on their own and are simply one part of a much larger context. But with video games increasing in complexity and accuracy, it becomes necessary to examine whether video games are capable of convincing players about truths of the real world through …

Increasing The Use Of Data-Based Individualization And Data-Based Decision-Making In Secondary Resource Settings, Melissa D. Garside

All Graduate Reports and Creative Projects, Fall 2023 to Present

Data-based decision-making (DBDM) and data-based individualization (DBI) are two evidenced-based and high-leverage practices that improve student outcomes when implemented with fidelity. Unfortunately, these practices face various implementation obstacles, particularly when applied to students with intensive academic, functional, and behavioral needs in a secondary school setting. With this project, I aimed to improve my personal practice to provide secondary special education teachers in my district with professional development and support to understand, implement, and sustain the implementation of DBDM and DBI. Report 1 describes a day-long professional development session about DBI as applied to intensive reading interventions provided by middle school …

She: The Shadow Self, Mya Bethers

All Graduate Reports and Creative Projects, Fall 2023 to Present

This multimodal poetry thesis explores the Female Shadow, an adaptation of Carl Jung’s concept of the Shadow that focuses on women’s experiences, through the themes of silence, abuse, and generational trauma. Incorporating multimodal forms such as video poetry and visual poetry alongside traditional print poetry, the collection mirrors the fragmented nature of trauma and the instability of memory. This collection draws from feminist theorists like Hélène Cixous, bell hooks, and Trinh T. Minh-ha, as well as poets engaging with Jungian concepts such as Sylvia Plath, Robert Bly, and Châtillon Coque. This work examines repression, voice, and the unconscious. Formally, it …

Beyond The Basics Motivation And Assessment In Sustaining Arabic Learning, Laila Eissa

All Graduate Reports and Creative Projects, Fall 2023 to Present

This portfolio presents the teaching philosophy, examples of teaching approaches and techniques, and a research project of the writer for the Master of Second Language Teaching at Utah State University (USU). It highlights collaboration with colleagues and faculty in Second Language Acquisition research, providing an overall overview of the entire experience. The research in this portfolio explores the theories behind language teaching and assessment through two sections: first, the teaching philosophy, and second, hands-on experience section. The third section focuses on the main research paper, which examines the motivational factors influencing students in Arabic, French, and German classes to continue …

The Art Of Engagement: Personal Connections, Innovative Practices, And Goal-Driven Language Motivation, Margrit Staiger

All Graduate Reports and Creative Projects, Fall 2023 to Present

This portfolio includes the author’s personal experiences, practices, and perspectives for teaching languages, all refined and revitalized during her time in the Master of Second Language Teaching program at Utah State University. The author’s teaching perspectives have been informed by her experiences teaching French to primary, secondary, and university students, as well as by courses taken throughout the program. The following consists of three main pieces: the author’s teaching philosophy, an overview of research and practical applications of Game-Based Learning, and finally, research on factors that influence continuation of Arabic, French, and German in a university program.

Observing Mesospheric Gravity Waves With Nasa's Awe Mission And Correlating To Gnss Tec Maps, Jaime Aguilar Guerrero, Björn Bergsson, Sehin Mesfin, Pavel Inchin, Matthew Zettergren, Ludger Scherliess, Yucheng Zhao, Dominique Pautet

Space Dynamics Laboratory Publications

The Atmosphere Waves Experiment (AWE) is a NASA mission launched on November 9, 2023, and installed on the International Space Station (ISS). Its primary goal is to detect and characterize atmospheric gravity waves (AGWs) by measuring Earth’s mesospheric hydroxyl (OH) airglow with its key instrument, the Advanced Mesospheric Temperature Mapper (AMTM). Since its deployment, AWE has been quantifying the seasonal and regional variability of AGWs, investigating their occurrence and potential sources, and enabling the assessment of their broader impact on the atmosphere by comparing measurements at different altitudes by other instruments. AWE has collected extensive imagery and temperature data capturing …

Strategies For Increasing Methane Removal In Methanotroph Bench-Scale Systems For The Production Of Ectoine, Jaden Storrer

All Graduate Theses and Dissertations, Fall 2023 to Present

Anthropogenic methane emissions contribute to the greenhouse gas profile which is the chief cause of climate change. One significant source of methane emissions is biogas produced from bacteria in wastewater facilities and landfills. Methane rich biogas has the potential to be valorized into high value bioproducts by using methanotrophs (microbes that use methane as their primary carbon source). Methylotuvimicrobium alcaliphilum 20Z was selected for this study as it can generate ectoine when grown in highly saline environments. Ectoine has been proven to have many benefits such as it prevents protein denaturation, it has hydration properties, and is a UV protectant. …

Managing For Disturbance: Trade-Offs Associated With Population Resilience And Ecosystem Size, Ellie Wallace

All Graduate Theses and Dissertations, Fall 2023 to Present

Populations can recover from and withstand disturbance through characteristics such as reproduction and maintaining large abundances. While these traits are beneficial to native species conservation, they can simultaneously challenge effective invasive species management. Effective invasive species control requires sufficient efforts to overcome a population's ability to recover from disturbance, such as harvest. My dissertation aimed to address how the size of an invasive population and its ability to recover from disturbance impact a suite of invasive species control methods, including those that (1) target mainly larger and older individuals (i.e., mechanical removal), (2) target all sizes of individuals (i.e., targeted …

Door - To - Door Summer Sales And Other Summer Employment: A Cost And Benefit Analysis, Jentrie Gilliland

Undergraduate Honors Capstone Projects

Door-to-door summer sales is heavily marketed to college students, especially on university campuses in Utah. These employment options are marketed as having high financial rewards while giving students the opportunity to develop their professional skills. In this study, I examine whether these expected rewards are delivered and if door-to-door summer sales is a viable position for college students in comparison to other summer employment. Specifically, I focus on the financial benefits and skills gained from both job types as well as determinants for students who participate in door-to-door summer sales versus other summer employment. My findings indicate that there is …

A Systematic Review Of Acceptance And Commitment Therapy In Sub-Saharan Africa: Understanding The Cultural Adaptations, Miriam N. Mukasa

All Graduate Theses and Dissertations, Fall 2023 to Present

Acceptance and Commitment Therapy (ACT) is a type of therapy that helps people handle difficult thoughts and feelings by staying present, accepting what they cannot control, and focusing on what truly matters to them. Despite its growing global popularity, the implementation and effectiveness of ACT in sub-Saharan Africa remains underexplored.

We evaluated the current evidence on the application, effectiveness, and cultural adaptation of ACT in sub-Saharan Africa, identifying gaps and providing recommendations for future research.

18 unique studies that met the inclusion criteria were found. Studies on improving athletic performance were the most common, with ACT also being evaluated for …

A Voice For Unity: The 1947 Freedom Train And Collective Memory Of The American Revolution, Joseph Lewis

All Graduate Theses and Dissertations, Fall 2023 to Present

One element of American Revolution memory is how united the colonists were during the Revolution. Many subsequent political groups, such as the American Heritage Foundation (AHF), utilized this idealistic collective memory to advocate for unity and legitimize their agendas. Through the 1947 Freedom Train, the AHF shaped and reinforced a unified, idealistic, national heritage to unite Americans against the perceived threats of communism, disloyalty, and disunity at home, partially by framing the American Revolution as a united endeavor. Some Utahns and Americans at large, while supporting the pro-capitalist message embedded in the train, applied its message to support the protection …

A Laboratory Study On The Hydraulics Of Stepped Spillways: Effects Of Step Geometry And A Labyrinth Crest, Megh Raj K C

All Graduate Theses and Dissertations, Fall 2023 to Present

Observed trends in extreme storms are affecting the safety of several embankment dams. Spillways are critical for safely conveying excess water in the reservoir over the dam and into the downstream river, yet many dams that were built over 40 years ago have undersized spillways to handle modern flood estimates requiring repairs and upgrades. Consequently, a unique spillway crest, the labyrinth weir, has been used as a cost-effective improvement for numerous projects to enhance discharge capacity of existing weirs. Another cost-effective option for overtopping protection due is to place a less expensive concrete, Roller-Compacted Concrete (RCC), over the dam to …

Gone With The Flow: Flow Reduction Coincides With Reduced Metabolism And Standing Stock Of Benthic Algae And Macroinvertebrates In Desert Rivers, Chloe E. Lyles

All Graduate Theses and Dissertations, Fall 2023 to Present

River metabolism, the measure of energy flow in a river, is driven by hydrological and physicochemical regimes (e.g., temperature, turbidity, and nutrients). However, these regimes are increasingly altered by human water demand and climate change-driven drought. These stressors alter the magnitude, timing, and duration of critical spring-snowmelt floods with poorly understood consequences on ecosystem function, particularly in desert rivers. To investigate the linkages between flow reduction, river metabolism, and basal food resource productivity (i.e., algae and aquatic invertebrates), we measured metabolism and basal resource availability in seven desert tributaries with varying degrees of flow reduction during low-flow conditions in 2023 …

Understanding The Impact Of Colloidal Calcium Phosphate On The Ph Variation In Cheddar Cheese During Early Stages Of Aging, Rachel Lindstrom

All Graduate Theses and Dissertations, Fall 2023 to Present

The Cheddar cheese industry has recently observed variation in the pH of their cheese during the early stage of storage. This variation may be due to the addition of the faster acid producing thermophilic starter culture Streptococcus thermophilus which was recently introduced into the Cheddar cheese making process. This starter culture may impact the calcium buffering properties of the cheese due to more retention of the insoluble calcium (INSOL Ca) within the cheese. To investigate this problem, we studied how insoluble calcium affects cheeses with pH ranging from 4.8 to 6.6 and found that INSOL Ca was positively correlated with …