Digital Commons Network^™

Design, Control, And Optimization Of Unfolding-Based Ac-Dc Topologies With Three-Port Resonant Converters For Electric Vehicle Battery Charging Applications, Aditya Zade

All Graduate Theses and Dissertations, Fall 2023 to Present

The global effort to reduce greenhouse gas emissions and reliance on fossil fuels has made electric mobility a cornerstone of sustainable transportation. This transition is driving demand for advanced charging infrastructure and more efficient power conversion systems. Power converters play a central role, not only in enabling reliable EV charging but also in integrating renewable energy sources with the grid. Because of the large amount of power involved, these converters must operate efficiently, reliably, and at low cost. Conventional high-power chargers often use two stages of conversion, which are effective but limited by size and energy losses. To overcome these …

Lagomorphs, Ungulates, And Predation: Exploring Interactions And Quantifying The Effect Of Lagomorph Herbivory In Rangelands, Shantell Marie Garrett

All Graduate Theses and Dissertations, Fall 2023 to Present

Rangelands are expansive ecosystems that make up more than 30% of the total surface land area in the contiguous United States. In the west, they are typically categorized as shrublands, grasslands or deserts with low precipitation. The vegetation communities consist largely of grasses and forbs and are thus widely used for livestock grazing. Despite their barren appearance, rangelands are diverse ecosystems that are home to a wide breadth of species.

The Henry Mountains, located in south central Utah, is one example of this system type. With their inspiring red-rock mesas and towering plateaus, this public land, managed by the Bureau …

Impacts Of Including Sprouted Barley In The Diet Of Beef Cattle On Production, Ruminal Health, And Meat Quality, Zachary C. Crump

All Graduate Theses and Dissertations, Fall 2023 to Present

Beef producers in the United States are working to meet rising global demand for animal protein while facing major challenges such as drought, climate uncertainty, and rapid urbanization. These issues make it difficult to produce consistent and dependable feed, pushing producers to explore new ways to grow feed using fewer natural resources. Vertical farming systems are one option that can grow sprouted cereal grains indoors throughout the year while using decreased land and water than traditional agriculture. Sprouted barley grows within six to seven days and may serve as a nutrient dense alternative feed source for cattle at several stages …

Using Luminescence Of Quartz Temper From Archaeological Pottery To Infer Wildfire Intensity In The Southwestern Us, Brooklyn D. Dib

All Graduate Theses and Dissertations, Fall 2023 to Present

The size and frequency of wildfires have increased recently, impacting ecosystems, communities, and human health. This research uses the heat-sensitive luminescence signals of quartz sand temper within archaeological pottery to record past wildfire conditions. Pottery sherds, which are fragments of archaeological pottery, from the forest floor in sites in New Mexico and Arizona were collected from different fire contexts (no fire exposure, historical fires, prescribed burns, and modern wildfires). These forests are primarily Ponderosa Pine with a grassy understory. The interior sand grains of each sherd sample were analyzed using optically stimulated luminescence, which dates when the mineral grains were …

Reconstruction And Texturing Of 3d Surfaces From Fused Low-Cost Aerial Lidar And Optical Imagery, Samuel Kiguthi

All Graduate Theses and Dissertations, Fall 2023 to Present

Drones equipped with laser scanners (LiDAR) and cameras capture detailed 3D scenes. Combining the laser points with photos builds realistic, photo-textured 3D maps used in surveying, agriculture, and infrastructure planning. Conventional methods to create these maps often misrepresent inward shapes such as doorways, overhangs, and outcrops. These shapes are misrepresented because drones mainly view top surfaces and do not collect significant data on vertical or hidden areas.

This study introduces a surface-reconstruction method that groups LiDAR points into clusters, reconstructs smooth surfaces for each cluster, and uses information from recorded camera poses to stitch clusters together. Tests on real drone …

Spatial Strategies For Restoring Native Biodiversity And Connectivity In Managed Landscapes Of The Upper Clutha Basin, New Zealand, Jessica Zuban

All Graduate Theses and Dissertations, Fall 2023 to Present

Across New Zealand and around the world, biodiversity is declining due to the widespread loss and fragmentation of native habitat. This is especially true in agricultural landscapes, where native habitats have been replaced by intensive land use. This research focuses on the Upper Clutha Basin in Central Otago, New Zealand that has been significantly altered over time by farming, development, and other human activities. As a result, only a small amount of native vegetation remains, and the region is well below the critical threshold needed to support healthy ecological systems.

This study investigates how native vegetation can be strategically restored …

Biocontrol Of Canada Thistle (Cirsium Arvense) With The Rust Fungus, Puccinia Punctiformis In The Intermountain West: Integrated Weed Management Compatibility And Characterization Of Microbiome Associations, Caitlin Henderson

All Graduate Theses and Dissertations, Fall 2023 to Present

Canada thistle (Cirsium arvense) is an invasive weed of major concern in both agricultural and native areas. It competes against native plants, reduces crop production and quality, and causes significant costs in management and damages. Canada thistle can survive and spread through seeds, but primarily does so through its extensive root system, which causes the greatest management difficulties. There are several control methods for this invasive weed, herbicides are perhaps the most common and effective, however, they have limitations and negative consequences. Herbicide use near waterways is restricted and there are growing concerns of the development of herbicide …

Evaluating Energy Transition Winners And Losers: Are Algae Biofuels Desirable, Feasible, And Viable?, Michelle M. Arnold

All Graduate Theses and Dissertations, Fall 2023 to Present

Climate change, environmental degradation, finite resources, and the uneven distribution of energy access all points to an urgent need for a global energy transition. But making that transition responsibly requires more than enthusiasm for “green” solutions—it demands careful evaluation of which energy sources are truly worth investing in. This dissertation develops a practical decision-making framework to help policymakers, scientists, and the public answer three foundational questions about any new energy technology: Is it desirable? Is it feasible? Is it viable? By systematically weighing public narratives, biophysical constraints, and patterns of innovation, the framework aims to prevent wasted time, funding, and …

Developing Standardized Testing Datasets For Benchmarking Automated Quality Control Algorithm Performance With Aquatic Sensor Data, Ehsan Kahrizi

All Graduate Theses and Dissertations, Fall 2023 to Present

Advances in water monitoring technologies have led to a large increase in the amount of data collected from rivers, lakes, and other water systems. However, ensuring that these data are accurate and reliable remains a major challenge. Traditional data quality checks are done manually by a technician, which can be slow, inconsistent, and not practical for real-time monitoring. This research addresses these challenges by developing standardized datasets for testing computer-based methods that automatically detect and correct errors in water data. Using information from the Logan River Observatory in northern Utah, we created a step-by-step process to identify, categorize, and label …

Practical Effectiveness Of Large Language Models In Assisting Landscape Architects In Plant Selection, Paul Gardner

All Graduate Theses and Dissertations, Fall 2023 to Present

Artificial intelligence (AI) is rapidly transforming many industries, but its role in landscape architecture remains relatively unexplored. This study examines how AI, specifically GPT-4, can assist landscape architects in selecting plants for projects. By comparing AI-generated plant lists to those that human experts created, the research evaluates Accuracy, Suitability, Availability, Aesthetics, and Professional Usability.

The results show that AI-generated plant lists were highly efficient, accurately matching site conditions and improving plant availability while significantly reducing selection time. However, human expertise was essential for ensuring aesthetic quality and design intent. While AI can serve as a powerful tool for streamlining plant …

Investigating Pyrethroid Insecticide Resistance In The Alfalfa Pest Insects Hypera Postica (Alfalfa Weevil) And Lygus Spp. (Lygus Bugs) In Utah Alfalfa Fields, Rosalie Sepesy

All Graduate Theses and Dissertations, Fall 2023 to Present

Chemical insecticides are commonly used to manage the damage to crops caused by agricultural pest insects. Reliance on insecticides for pest management has resulted in insecticide resistance in many insect species worldwide. Alfalfa weevils (Hypera postica) and lygus bugs (species within the genus, Lygus), are major pests to alfalfa hay and seed respectively and cause significant economic damage. The goal of this dissertation was screen Utah alfalfa fields for resistant alfalfa weevil and lygus bug populations, investigate genetic mutations that can influence resistance in alfalfa weevils, and establish which species of lygus bugs are present in Utah …

Improvisation Of Mands Using Augmentative And Alternative Communication, Lauren Decker

All Graduate Theses and Dissertations, Fall 2023 to Present

Research shows that young children who use pictures to communicate can use colors, shapes, and functions of items to request when the specific picture of the item is not available. This problem-solving skill is called improvisation, which this study taught to a preschool aged participant with communication delays. A four-year-old preschool student was able to make these requests with basic colors, shapes, and three function pictures. They also were able to make these requests for items not taught to them in different settings. This suggests that improvisation training can be successfully implemented with preschool aged children with communication delays and …

Discourses Embedded In The Adams V. School Board Of St. Johns County Decision And The Rights Of Transgender Students In Schools, Douglas Larson

All Graduate Theses and Dissertations, Fall 2023 to Present

This study was critical analysis of the language of the court case Adams v. School Board of St. Johns County (2022). This case was brough by a student against the School District challenging a policy that prevented him, a transgender boy, from using the boys’ restroom. The analysis was not intended to determine the merits of the case or the correctness of the legal reasoning. Rather, the analysis was performed on the text of the case—the language used by the judges—to learn about the beliefs, attitudes, and values of the judges.

The reason this analysis is important is because judges …

A Software Framework For Translating Onnx Models Onto The Lace-C3a Hardware, Shawn Jones

All Graduate Theses and Dissertations, Fall 2023 to Present

Modern computers are powerful, but they are not always efficient enough for small, low power systems like those used on satellites and scientific instruments. To solve this problem, engineers often turn to FPGAs—reconfigurable computer chips that can be customized to run specific tasks much faster and with far less energy than ordinary processors. However, finding the best possible design for an FPGA program is extremely difficult because there are millions of ways a design could be built, and only a small fraction of them actually perform well.

This thesis presents SNOW, a new framework that helps automate the search for …

The Effects Of Lactoferrin And Iron-Enriched Whey On Iron Status Of Collegiate Females, Connor Kemp

All Graduate Theses and Dissertations, Fall 2023 to Present

Iron deficiency has remained a global issue even in developed countries despite food fortification and increased nutritional literacy, biological women of child baring age are at particular risk due to menstruation and reduced dietary intake of iron containing foods compared to men. This issue is of particular concern in athletics due to the critical role of iron in oxygen transport and energy metabolism. With nearly half of female athletes presenting low iron status iron supplementation is often necessary. With iron supplementation often resulting in gastrointestinal symptoms that could negatively impact sport performance itself there is a need to explore other …

Lace Network Firmware: A Polarfire Fpga Network For Data Routing And Command Interfacing In Space Applications, Kade C. Howes

All Graduate Theses and Dissertations, Fall 2023 to Present

Modern small spacecraft rely on powerful yet efficient onboard compute devices to process data from sensors in real-time due to tight power and volume constraints. This work explores a new compute device system built from PolarFire Field-Programmable Gate Arrays (FPGAs), which are power-efficient, reprogrammable chips well-suited for space applications. The system connects via a central controller FPGA with one or multiple companion processing FPGAs, allowing sensor data to be quickly received and shared across the network. Standardized data formats and interfaces increase compatibility with spacecraft computers. By simplifying data handling and using high-speed communication links, this architecture makes it easier …

Understanding Impact Of Starter Culture Blends On The Ph Variation In Cheddar Cheese During Early Aging, Samuel J. Clarke

All Graduate Theses and Dissertations, Fall 2023 to Present

Consumer expectations govern what is acceptable when it comes to the flavor, texture, and color of the cheese. These quality attributes of cheese are all influenced by the pH of the cheese which is in turn controlled by the acid production of the starter lactic acid bacteria (SLAB) used to make cheese. Whatever the final pH of the cheese is, is what determines the quality of the cheese. Unfortunately, there are some Cheddar cheese manufacturers that have observed pH variation during the early aging of their cheeses. We hypothesize that the addition of thermophilic, fast-acid producing bacteria, like Streptococcus thermophilus …

Faxes, Emails, And Cad: A Case Study Of The Changing Landscape In Born-Digital Design Records, 1994-2006, Julia D. Larson

Journal of Western Archives

The article examines the technological changeover from analog to born digital design records in the mid-1990s, and is a case study in how one San Francisco Bay Area landscape architecture firm navigated the paradigm shift. The firm retained extensive documentation of the project management/construction administration for large scale projects, and this case study shows how archivists can utilize the analog documentation (like faxes and printed emails) to gain a greater understanding of how design firms began using Computer Aided Drafting and how CAD changed design and the process of archiving.

Tannin Supplementation Alters Foraging Behavior And Spatial Distribution In Beef Cattle, Bashiri Iddy Muzzo, R. Douglas Ramsey, Kelvyn Bladen, Juan J. Villalba

Wildland Resources Student Research

Beef production on chemically uniform grass monocultures can limit nutrient synchrony and contribute to uneven pasture use. We evaluated whether supplementing tannins with bioactive plant secondary compounds improves foraging dynamics and landscape use by beef cattle grazing a meadow bromegrass monoculture in ways aligned with rangeland sustainability. Twenty-four Angus cow–calf pairs were allocated to six 3.6-ha paddocks (four pairs/paddock), randomly assigned to Control (Ctrl; n = 3) or Tannin treatment (TT; n = 3). Animals received 1 kg/cow/day of DDGs, with TT receiving an added 0.4% tannins (2:1 condensed:hydrolyzable). Grazing occurred during four 15-day periods (July– September) across two years. …

Faculty Senate Agenda December 1, 2025, Utah State University

Faculty Senate & Faculty Senate Executive Committee

• 3:00 Call to Order
• Approval of Minutes - November 3, 2025
• 3:05 University Business
• 3:20 Faculty Senate Business
• 3:30 Information
• EPC Report - November 6, 2025
• 3:45 Report
• Honors Program Annual Report
• USUSA Annual Report
• Faculty Evaluation Committee
• Academic Freedom and Tenure
• 4:10 Old Business
• 4:15 New Business
• Faculty Forum
• Adjourn: 4:30 pm

Decision Support To Meet Objectives For Water And Fisheries Management In Large River And Estuarine Systems, Phaedra Elizabeth Budy

Funded Research Records

No abstract provided.

Access To Healthy And Nutritious Food In Utah: Results From The 2024 Utah Wellbeing Survey, Heather H. Kelley, Palak Gupta, Courtney G. Flint

All Current Publications

Every Utahn, regardless of income, ZIP code, race, age, or health status, deserves reliable access to affordable, nutritious, and culturally meaningful food. Yet, too many communities across the state face persistent barriers that limit their ability to eat well and live healthy lives. This fact sheet reviews results of a 2024 Utah State University (USU) Extension needs assessment that identified food and nutrition security as a high-priority issue in Utah. It explores the current landscape, identifies key challenges, and outlines strategic opportunities for USU Extension and its partners to enhance food security statewide.

Preserve The Harvest: Canning Goat Meat At Home, Callie Adams, Andrea Schmutz

All Current Publications

Due to its lean composition and nutritional profile similar to those of other tested meats, goat is well-suited for pressure canning. Follow USDA and Utah State University (USU) Extension altitude guidelines. This fact sheet provides guidelines for selecting high-quality meat, using proper equipment, and adhering to tested methods. Home canners can safely preserve goat meat and enjoy its benefits year-round.

Intergenerational Transfers In A Tractable Overlapping-Generations Setting, James Feigenbaum, T. Scott Findley, Sepideh Raei

Economics and Finance Faculty Publications

Motivated by the Generation-Skipping Transfer Tax (GSTT) in the United States, we examine how varying estate tax rates by the heir’s age affects welfare. Methodologically, we introduce a parsimonious constant elasticity of substitution (CES) bequest utility that is markedly more tractable than the altruistic specifications commonly used in the literature, delivering closed-form optimal rules and transparent parameterization. Using this new framework, we provide a proof of concept showing how transfers from older to younger generations can enhance equilibrium welfare in a dynamically efficient economy à la Samuelson (1975). We embed the tractable bequest utility in a two-period overlapping-generations model with …

Modulation Of The Semi-Annual Oscillation By Stratospheric Sudden Warmings As Seen In The High-Altitude Jawara Re-Analyses, Jiarong Zhang, Yvan Orsolini, Kaoru Sato

All Physics Faculty Publications

The semi-annual oscillation (SAO) dominates seasonal variability in the equatorial stratosphere and mesosphere. However, the seasonally dependent modulation of the SAO in the stratosphere (SSAO) and mesosphere (MSAO) by sudden stratospheric warmings (SSWs) in the Arctic has not been investigated in detail. In this study, we examine the seasonal evolution of the SAO during 16 major SSW events spanning 2004 to 2024 using the Japanese Atmospheric General Circulation Model for Upper Atmosphere Research Data Assimilation System Whole Neutral Atmosphere Re-analysis (JAWARA). Basic features of the SAO are well captured by JAWARA, as evidenced by the SSAO and MSAO appearing at …

Leveraging Consistency: Evaluating Ai Coders For Qualitative Research, Saríah López-Fierro, Carlos Chiriboga-Calderón, José López-Fierro, Rubén Pacheco-Villamar

Instructional Technology and Learning Sciences Faculty Publications

This study provides insights of using Large Language Models (LLMs) for deductive coding tasks in market research. Deductive coding, which applies predefined codes to text, often demands consistency rather than interpretive nuance. 

We compare five closed-weight LLMs with a group of human coders in tagging instances of “Expansive Framing” across qualitative excerpts, using Fleiss’ Kappa, ANOVA, and Estimated Marginal Means. Results reveal that LLMs exhibit higher consistency and faster processing than humans. These findings suggest that integrating LLMs can improve efficiency, making them an attractive asset for firms managing large datasets.

Journal Of Early Hearing Detection And Intervention: Volume 10 Issue 1, Pages 1-58

Journal of Early Hearing Detection and Intervention

No abstract provided.

Third Grade Reading Proficiency In Deaf/Hard Of Hearing Children Who Received Early Intervention, Jareen Meinzen-Derr, Cassandra Conrad, Mekibib Altaye, Elodie Betances, Jayna Schumacher, Susan Wiley

Journal of Early Hearing Detection and Intervention

Background

Early enrollment in Part C Early Intervention (EI) by age 6 months is linked to improved language and kindergarten readiness in deaf or hard of hearing (DHH) children, but its effect on later academic outcomes is unclear. This study examines whether earlier (<6 months) or later (>6 months) enrollment influences third-grade reading proficiency.

Method

This study used data linked from three Ohio state agencies for infants identified with permanent hearing loss born 2008-2014 who received EI; 412 had third grade standardized reading tests. Reading levels were categorized from limited to advanced. Logistic regression assessed the association between enrollment timing and reading proficiency, …

The Radical Middle: Caregiver Beliefs About Language Access For Deaf And Hard Of Hearing Children, Monica Zmudzinski, Krystal L. Werfel

Journal of Early Hearing Detection and Intervention

The purpose of this study was to explore the communication choices of caregivers of deaf or hard of hearing (DHH) children. Specifically, we explored what communication options caregivers were presented with, identify what factors impacted a caregiver’s decision to pursue spoken language, and identify what barriers exist to learning sign language. We conducted semi-structured interviews with 20 caregivers of DHH children who had decision making power at the time of their child’s diagnosis. Transcripts were coded using an inductive approach with triangulation between authors. Many families reported that minimal to no information was provided about communication options at the time …

Evaluating Preschoolers Who Are Deaf/Hard Of Hearing Using Listening And Spoken Language To Determine Special Education Eligibility, Kameron C. Carden, R. A. Mcwilliam

Journal of Early Hearing Detection and Intervention

The aim of this study was to increase understanding of evaluation practices used when determining special education eligibility for preschoolers who are deaf/hard of hearing (DHH) using listening and spoken language (LSL), particularly during the early intervention to preschool transition. Specifically, we explored alignment of school-based practices with recommended practices from the National Association of State Directors of Special Education (NASDSE, 2018). An online survey was distributed to school-based special educators, including speech-language pathologists (SLPs), special education teachers, and teachers of the deaf within the United States that included a) evaluation practices, b) eligibility requirements, and c) practice demographics. Participant …