Digital Commons Network^™

Pesticide Dissipation In Agroecosystems – Exploring Pesticide Fate And Transport Mechanisms To Protect Alternative Pollinators, Calvin Luu

All Graduate Theses and Dissertations, Fall 2023 to Present

Honey bees are the most well-known pollinators, but there exists thousands of other bee species that contribute to pollination; one such group of bees are the solitary bees. True to their namesake, solitary bees do not live in hives like honey bees. Some solitary bees, like alfalfa leafcutting bees (ALCB) and blue orchard bees, can pollinate crops more efficiently than honey bees. However, since they live solitary lives, pesticide exposure is much more harmful to their overall population. If one honey bee dies from pesticide exposure, the hive can still survive, and the queen bee will continue producing offspring. If …

Perfectionism And Discrimination In The Workplace, Kyla Simone Baldonado

Theses & ETDs

Work engagement has been found to relate to both workplace discrimination and employee perfectionism. Building on earlier research, the current study investigated correlations between work engagement, sexual discrimination, racial discrimination, perfectionistic strivings, and perfectionistic concerns. A total of 430 participants responded to an online questionnaire about their personal and interpersonal experiences at work. Work engagement correlated positively to perfectionistic strivings, but negatively to perfectionistic concerns and racial discrimination. Work engagement correlated negatively to sex discrimination but only in the women participants. Hierarchical multiple regression revealed that perfectionism did not moderate the relationship between racial discrimination and work engagement. It did, …

Brainerd Junior High Adaptive Reuse: Transitional Living For Foster Care Graduates, Gavin J. Watson

Honors Theses

Brainerd Junior High is being reused as a transitional living and working facility for foster care age-outs in need of assistance as they learn skills of independence and confidence. The first floor serves the community of Brainerd with a variety of commercial spaces, offering the graduates onsite places for employment. The upper levels serve as studio and 1 bedroom apartments for 24 residents, with shared laundry and community building spaces.

Adaptive Reuse Of Brainerd Junior High: Creating Third Spaces, Nathan S. Shevick

Honors Theses

This thesis project explores how the transformation of a local building in the community can bring people together through adaptive reuse. The Brainerd Junior High School was built in 1930 and designed by Chattanoogan architect R.H. Hunt, who has designed many significant buildings in the area such as the Medical Arts Building, 2nd Presbyterian Church, Lookout Mountain Hotel (Carter Hall, Covenant College), Soldiers’ and Sailors’ Memorial Auditorium, the Chattanooga Bank Building, and many other beloved buildings in the area. The Brainerd Junior High School building was expanded in 1956 and 1959 and changed ownership and became the magnet school, 21st …

Role Of Libraries In Promoting Sustainable Development: A Thematic Literature Review, Ayushi Soni, Dr. Ritu Singh

Library Philosophy and Practice (e-journal)

Sustainable development is a priority worldwide and is driving institutions in different sectors to be environmentally, socially and economically responsible. Libraries have also taken action on the topic of sustainability, including greening, sustainable service, digital transformation and support for Sustainable Development Goals (SDGs). The library's contribution to Sustainable Development is explored in this study by reviewing the literature on the topic from 2020 to 2025. Scholarly databases were searched for literature and analysed to find key trends and themes on sustainability in libraries. Five thematic areas were identified during the review process: Sustainable resources and services, Sustainable library practices, ICT …

All-Cause And Cause-Specific Mortality In Gambling Disorder: Evidence From A Nation-Wide Matched And Sibling Cohort Study In Taiwan, Yang-Chieh Brian Chen, Chih-Wei Hsu, Liang-Jen Wang, Mu-Hong Chen, Yao-Hsu Yang, Chih-Sung Liang, Edward Chia-Cheng Lai

Children’s Nutrition Research Center Staff Publications

Background and aims: Gambling disorder (GD) has been linked to suicidal ideation and suicide deaths; however, evidence on all-cause and cause-specific mortality-particularly in Asian populations-remains limited. Using a retrospective cohort study based on nationwide matched and sibling cohort, we investigated all-cause and cause-specific mortality risk in patients with GD.

Design, setting and participants: A retrospective cohort study was conducted using 2000-2022 data from Taiwan's National Health Insurance Research Database. A cohort of 961 individuals diagnosed with GD was identified. An age- and sex-matched control cohort (n = 3,844) and an unaffected sibling cohort (n = 675) were constructed. Cumulative survival …

Environmental Psychology In Historic Preservation, Eva Kindall

Honors Theses

This thesis explores the adaptive reuse of the historic Brainerd Junior High School in Chattanooga, TN, as a catalyst for community revitalization. Initially built in 1930, the building served generations of students for 75 years. Currently, the main building is closed, while the additional buildings serve as the Midtown Community Center. Its architectural character, accessible location, and nostalgia present an opportunity to reimagine its role in the current economy. Adaptive reuse offers more than architectural preservation, but is a strategy to address urban challenges such as housing affordability, lack of amenity access, and cultural erasure. Through this project, the aim …

Genetic Regulation Of Uterine Organogenesis, Diana A. Machado

Dissertations and Theses (Open Access)

In eutherian and marsupial mammals, the site of embryo implantation and gestation is the uterus. The precursor tissue of the uterus, oviducts, cervix, and upper vagina is the Müllerian duct epithelium and its adjacent mesenchyme. Morphological uterine variation between species is established during embryogenesis by species-specific differences in Müllerian duct fusion at the midline, growth, and differentiation. For example, laboratory mice have a bipartite uterus with two uterine horns and a single cervix, whereas humans have a simplex uterus with a single chamber and single cervix. In humans, variations in the fusion process can alter typical uterine morphology, correlating with …

Reduced Lower Extremity Strength, Altered Muscle Activation, And Unchanged Kinetics During Single-Leg Squatting In Males With Patellofemoral Pain Versus Pain-Free Males: A Cross-Sectional Analysis, Lisa T. Hoglund, Amy H. Amabile, Thomas Alexander Hulcher, Victoria K. Polansky, Erin L. Dopke

Department of Physical Therapy Faculty Papers

BACKGROUND: Patellofemoral pain is frequently a cause of reduced quality of life in physically active males. The cause of patellofemoral pain is theorized to include aberrant biomechanics during weight-bearing activities. Altered biomechanics of females with patellofemoral pain have been reported, but there is a dearth of research for males with this condition. This study aimed to compare males with and without patellofemoral pain for hip and knee joint moments and muscle activation during single-leg-squatting and proximal muscle strength.

METHODS: Twenty males with patellofemoral pain and 20 pain-free males aged 20-39 years performed single-leg-squatting while motion, ground reaction force, and proximal …

Assessing The Feasibility Of A Self-Management Intervention For Individuals With Advanced Prostate Cancer And Comorbid Type Ii Diabetes Mellitus, Amy L. Shaver, Christina Steinbock-Malfer, William Tester, Patrick Mille, William K. Kelly, Kevin K. Zarrabi, Costas D. Lallas, Mihir M. Shah, Rose Dimarco, Emily Brand, Shawntel Brown, Swapnil Sharma, Nikita Nikita, Cindy Cogen, Scott W. Keith, Grace Lu-Yao

Kimmel Cancer Center Faculty Papers

BACKGROUND: Many older adults with cancer have at least one comorbidity. Type II diabetes mellitus (T2DM) is a common comorbidity among patients with prostate cancer (PC) and represents an important consideration in this population. Comorbid T2DM can negatively impact cancer-specific outcomes for patients, suggesting the need for better glycemic management, especially for patients on active cancer treatment. The goal of this modified Diabetes Self-Management Education Services (mDSMES) pilot study was to provide patients with the opportunity to learn methods of diabetes self-management, including how to manage their glucose levels, improve their understanding and utilization of medication to promote improvements in …

Multidimensional Determinants Of Gait, Balance, And Softball Performance In Female Youth: Biomechanics, Resource Access, And Psychosocial Factors, Allie G. Mcauliffe

Master's Theses

Movement quality is a fundamental indicator of healthy childhood development and supports physical, emotional, psychosocial, and cognitive well-being. Movement quality is influenced by multiple biomechanical, environmental, and psychosocial factors, yet the relationships among them remain poorly understood in underrepresented populations such as female youth, particularly in softball. Previous studies have largely examined biomechanics, resource access, and psychosocial experience independently, and few have investigated how these factors interact in female youth softball players. To address this gap, this study compared gait and balance characteristics between softball (N = 34) and non-softball (N = 7) female youth, examined associations between resource access, …

Liah Greenfeld On Antisemitism As A Defining Characteristic Of The Monotheistic Civilization, Efraim Karsh

Comparative Civilizations Review

One cannot overstate the scholarly and intellectual loss occasioned by the untimely death of Boston University Professor Liah Greenfeld. Through her prodigious interdisciplinary research, Professor Greenfeld has established herself as one of the foremost social science theorists of our time and a worthy heir to the great firstgeneration nationalism scholars, in particular Eric Hobsbawm, Ernest Gellner, and Anthony Smith.

Paleolimnology And Diatom Taxonomy From Lake Tanganyika, Sristika Adhikari

All-Inclusive List of Electronic Theses and Dissertations

Lake Tanganyika is one of the world's largest freshwater ecosystems, supporting rich aquatic biodiversity and providing several ecosystem services to surrounding communities. Environmental changes such as rising lake surface temperatures, pollution, and land-use alterations threaten the lake’s sustainability. This research examines spatial and temporal variations in nutrient dynamics and primary productivity of Lake Tanganyika using diatom assemblages from multiple locations. Our findings indicate reduced nutrient levels and longer stratification periods in the lake’s central basin during most of the Common Era, as indicated by a remarkable increase in the relative abundance of long, needle-shaped planktonic Nitzschia species. In the southern …

Closer Than They Appear: Parasocial Relationships, Social Processes, And Emotional Intimacy, Paige Bedore

All-Inclusive List of Electronic Theses and Dissertations

Decades of research have attempted to clarify the mechanisms underlying parasocial relationships, or one-sided relationships. Yet, relatively little empirical attention has been given to the subjective experiences of intimacy that occur in these relationships or to making direct comparisons between social and parasocial relational processes within individuals. The present study aimed to address these gaps and to investigate whether selected variables associated with social relationships similarly predicted parasocial relationship strength. Adult participants identified both a meaningful social relationship target and a parasocial target before completing measures of relationship strength, intimacy, attachment style, and cumulative exposure for each relationship type. Hypotheses …

Parent Emotion Socialization And The Influence On Child Emotion Regulation In A Clinical Sample, Crystal Tracy

All-Inclusive List of Electronic Theses and Dissertations

This study aimed to contribute to existing literature by examining parent emotion socialization (i.e., parent orientation to child emotion) and its influence on child internalizing symptoms. Prior research suggests that parent emotion socialization impacts child emotion regulation and internalizing symptoms; however, there is little research at present focused specifically on the influence of parent orientation to child emotion on child internalizing symptoms through child emotion dysregulation. This study adds to the literature by considering the association between parent orientation to child emotion and internalizing symptoms in a sample of children referred for an ADHD evaluation. Participants included 161 children ages …

Charting The Martian Future: Long-Term Space Policy Planning Of Nasa’S Human Spaceflight Program, 1957-1988, Angel J. Peralta

Electronic Theses and Dissertations

From the late 1950s to the early 1990s, NASA’s human spaceflight programs repeatedly encountered political and bureaucratic pressures that prioritized short-term interests over long-term planning. These constraints shaped the development of the Apollo, Space Shuttle, Space Station, and other human spaceflight programs, limiting NASA’s ability to pursue a sustained strategic vision. This thesis traces the evolution of long-term human spaceflight policy through documents and memos produced by advisory committees, research councils, and key individuals during this period. Despite shifting administrations and their respective politics, these sources reveal a consistent goal of human spaceflight ultimately leading beyond Earth to the Moon …

Lessons From The Club Homeschool Capstone: Testing, Data Discipline, And The Computer Science Curriculum, Shane Brown

University Honors Theses

This thesis looks at the CLUB Homeschool Capstone project to argue that Portland State University's Computer Science curriculum should introduce testing and data quality discipline earlier and more intentionally than it does now. As team lead of a seven-person team, I coordinated sprint planning, communicated with the sponsor, and developed custom Discourse plugins that enhanced an existing forum platform instead of creating a separate application database, as requested by the sponsor. The project's requirements document called for a formal testing plan, but our team lacked the practical experience to implement one. This gap became evident through my internships as a …

Ranger Ferdinand Castillo: His Life And Legend, David Carle

Eastern Sierra History Journal

Park Ranger Ferdinand Castillo welcomed visitors to Yosemite National Park from his station at the Tioga Pass gate for 38 years, from 1954 to 1993. The warmth of his greeting, which might include a serenade with his guitar, captivated thousands, a memorable moment. Using hitherto unseen documents and images, David Carle does justice to this public servant.

Managing Inventory In The Supply Chain, Matthew J. Drake

Open Education Materials

Inventory represents a significant investment for most organizations and enables its operations to fulfill customer requirements. Effective inventory management frees critical working capital that the organization can use elsewhere while making sure products and services are available for customers. This book discusses the fundamental concepts of managing inventory within the supply chain and also describes methods for making inventory decisions in a variety of business scenarios.

Evaluating The Motivations Of Participants In Online Equine Extension Courses, Sarah Vos

Department of Animal Science: Dissertations, Theses, and Student Research

Traditional program evaluations emphasize participant demographics, knowledge gain, behavior change, and program impact. However, evaluating participant motivation can provide addition insight into why participants enroll in extension programs and help explain participant engagement and persistence throughout a program. The purpose of this study was to evaluate participant motivation in two online equine extension courses and examine potential relationships between motivation, demographics, and course delivery method, and describe participant engagement in Virtual Horse Judging Camp (VHJC). This cross-sectional study utilized convenience sampling of participants in two online equine extension courses, Horse Adult Leader Training and Educational Resource (HALTER) and VHJC. The …

Cross-Border Initiatives Border Fellow Report 2025-2026, Elise Free Ma, Tori Luna Ma, Jonathan De Vicente Encarnación Ma, Yolanda Viridiana Chávez Flores Phd, Korina Odet Cortés Uribe Edd, Jessie Valcin, Cristina Solano Díaz, Etienne Mulumeoderhwa Mufungizi Phd

Kroc IPJ Research and Resources

The 2025–2026 Border Fellows Report documents six community-led projects carried out across the Tijuana–San Diego region under the Kroc Institute for Peace and Justice's Border Fellows Program. Working in academia, civil society, and the public sector, the fellows addressed distinct challenges shaped by a common context: firearms trafficking and armed violence against women and LGBTQIA+ people; youth violence and suicide risk in a public middle school; discrimination in a federal preparatory school serving more than 4,300 students; the organizational capacity and language rights of Indigenous communities in Baja California; academic accompaniment for Haitian adolescents excluded from formal schooling; and intercultural …

Survival First: How Citizens Prioritize Competing Climate-Health Risk Countermeasures Under Fiscal Constraints, Katsuya Tanaka, Kazuhide Akaishi

Center for Public Service Publications and Reports

When governments must allocate limited resources among competing climate-health countermeasures, citizen risk priorities determine political feasibility—yet whether those priorities translate into fiscal support remains poorly understood. This study develops a hybrid best–worst scaling and contingent valuation framework that integrates individual-level priority parameters into an acceptance model, enabling direct testing of whether preference intensity predicts willingness to pay. Applied to a largesample survey of residents in Yokohama, Japan—a rapidly aging metropolis facing escalating heat emergencies—the analysis reveals three findings. First, citizens exhibit a survival-first hierarchy, decisively prioritizing immediate protective measures over long-term structural interventions, with consensus varying sharply across countermeasure types. …

Modulating Linear Frequency Modulated Pulses To Send Communications Data In A Bistatic Sar Scenario, Jarren T. Worthen

All Graduate Theses and Dissertations, Fall 2023 to Present

Synthetic aperture radar (SAR) is the technology that enables the creation of images using radar waves, allowing images to be formed regardless of weather. In bistatic SAR a radar platform uses a radar pulse from a separate platform to form an image. It is important that these radar systems are able to communicate with each other. Rather than wasting energy and space flying with a separate communication system, the radar systems could use the already existing SAR system to send data between each other while still forming SAR images. The work of this thesis is to show how very simple …

Fibrous Protein Biomaterials: Characterization Of Solitary Bee Silk And Cocoons, And Development Of Recombinant Hagfish And Bee Silk Materials, Oran Wasserman

All Graduate Theses and Dissertations, Fall 2023 to Present

This dissertation explores two complementary aspects of fibrous protein biomaterials: the characterization of understudied naturally occurring solitary bee silk and cocoons; and recombinant expression and biomaterial formation of recombinant hagfish intermediate filaments (rHIF) and a single Osmia lignaria Say (Hymenoptera: Megachilidae) silk protein. Some solitary bee species, which make up about 75% of all bee species, spin silk to construct protective cocoons during development. Despite the importance of silk and cocoons to the solitary bees' life history, their properties remain largely unexplored. This dissertation presents a novel method for isolating and testing individual silk fibers without interfering with the development …

Multispecies Weed Detection Using Unmanned Aerial Vehicles And Deep Learning Object Detection Models In Utah Forage Crop Corn Field, Utsav Bhandari

All Graduate Theses and Dissertations, Fall 2023 to Present

Weeds cost global agriculture over $32 billion annually and reduce crop yields by nearly one-third. Current weed control relies heavily on spraying herbicides uniformly across entire fields, leading to herbicide-resistant weeds, environmental harm, and increasing costs for farmers. A smarter approach is detecting weeds from the air and spraying only where they are present. This could dramatically reduce herbicide use while protecting crop yields. This thesis developed a complete system for identifying weeds in corn fields using drone-captured images and artificial intelligence. Working in commercial forage corn fields in Cache Valley, Utah, high-resolution aerial images were collected and used to …

Unifying And Expanding Global And Local Variable Importance Methods For Explainable Machine Learning, Kelvyn K. Bladen

All Graduate Theses and Dissertations, Fall 2023 to Present

Machine learning methods are powerful analytical tools used across all scientific disciplines and many other fields of investigation for prediction and inference from diverse data sources. Despite their broad applicability, machine learning methods are often highly complex and difficult to interpret. Developing a greater understanding of which variables most influence a response is essential for increasing the interpretability of these models and supporting informed decision-making. This research focuses on improving how we evaluate the importance of these variables.

One common approach is to shuffle the values of a variable and see how much the model accuracy gets worse. Another approach …

Visualizing The Phase Space Of Two Interacting Spherical Magnets Via Lagrangian Descriptors, Matthew Pontius

All Graduate Theses and Dissertations, Fall 2023 to Present

This thesis studies the motion of one spherical magnet sliding on another fixed spherical magnet. Although the setup is simple, the resulting motion can range from regular and predictable to chaotic as the energy increases. To understand this behavior, mathematical tools are used to visualize how all possible motions are organized in phase space. These methods reveal patterns such as stable regions, repeating motions, and chaotic trajectories. The results show how order and chaos coexist in this system and provide insight into how small changes in the initial conditions can lead to very different outcomes.

Comparing Error Correction Strategies In Discrete Trial Training For Children With Autism, Rachael Litchford

All Graduate Theses and Dissertations, Fall 2023 to Present

Children diagnosed with Autism Spectrum Disorder (ASD) often require structured, evidence-based teaching methods to promote skill acquisition. Discrete Trial Training (DTT) is one such approach widely used in Applied Behavior Analysis (ABA) to teach skills through repeated learning opportunities. However, limited research has compared the efficiency of specific error correction procedures within DTT. This study examined the comparative effectiveness of two error correction strategies, Active Student Response (ASR) and Model-Only, when acquiring tacting skills for children ages 2-10 with ASD. An alternating treatments design (ATD) was used to evaluate each strategy’s impact on skill acquisition, as measured by the percentage …

Using A Prerequisite Skills Assessment To Identify Effective Communication Modalities For Mand Training, Christine White

All Graduate Theses and Dissertations, Fall 2023 to Present

Many children with Autism Spectrum Disorder (ASD) need support to learn how to communicate their wants and needs. This study examined three different ways to teach children to request preferred items or activities: using sign language, exchanging pictures, and speaking. We compared how three children learned each communication method to determine whether their existing skills influenced which method was most effective. No clear relationship was found between children's existing abilities and how well they learned each communication method. These findings suggest that selecting the most effective communication approach may require considering each child's individual strengths and learning history rather than …

Integrating Space Use And Demography To Support Management Of An Endangered Alpine Ungulate, Danielle J. Berger

All Graduate Theses and Dissertations, Fall 2023 to Present

The places animals choose to live affect the food they find, the dangers they face, and the weather conditions they experience. These experiences influence whether individual animals survive and reproduce, which in turn affects the size and health of animal populations. Although scientists have long believed that animal movements play an important role in population trends, there has been limited real-world evidence showing this connection. Advances in GPS tracking technology now allow researchers to follow animals over long periods and better understand how movement influences survival. Using 20 years of GPS tracking data from the endangered Sierra Nevada bighorn sheep …