Digital Commons Network^™

A Front-End Analysis Of Teacher Retention At A High Poverty K-5 Public School, Nicole Gray

Theses and Dissertations

This dissertation explored the experiences of educators impacted by teacher retention issues at a high-poverty K-5 public school. Researchers have studied the decline in individuals entering into the education profession as well as the high rates of individuals exiting the profession. With individuals leaving the profession at high rates, and not enough entering to replace those that are leaving, there is now a massive shortage with not enough teachers to meet the needs of students in public schools. The few individuals that are entering into the profession are not being retained, especially at high-poverty schools. This study explored the thoughts …

The Influence Of Metacognition On College Readiness And Persistence, Michael L. Fitzgerald

Theses and Dissertations

This applied dissertation examined the influence that metacognition has on college readiness and its most traditionally used metrics: performance-based outcomes and persistence. Specifically, this study addressed to what degree underlying metacognitive structures differ between college students’ successful metrics of performance and persistence compared to a more general sample of college students.

The research characterized metacognition along three domains of analysis: (a) selfefficacy/ motivation, (b) soft skills/psychological capital (Psycap), and (c) expected value of control (EVC). The quantitative study included 54 college students and a crosssectional design. Participants completed a four-part Likert-style survey, where their responses were measured along the three …

Does Integrating Parental Involvement In Therapy Improve Behavior In Children With Attention Deficit Hyperactivity Disorder?, Pamela Lassiter

Theses and Dissertations

The research problem was the lower success rate of interventions for children with attention deficit hyperactivity disorder (ADHD) because of the exclusion of parents in the counseling process. The purpose of the research was to explore if integrating parent involvement in therapy improved the behaviors in children with ADHD. The study occurred at a private mental health facility that used cognitive behavior therapy and behavior interventions with the children.

The study was guided by the phenomenological qualitative research design. Ten single parents of male children, ages 4 to 10 with ADHD, participated in this study. Parents were selected using a …

Screen Time Use, Reading Achievement, And Thinking Maps: A Correlational Study Of Fifth-Grade Students, Morgan Brooke Unger

Theses and Dissertations

The problem addressed in this study was the fixation of screen time among fifth-grade students at a kindergarten to Grade 12 private school in South Florida. By the time children reach age 12, 69% of adolescents own a smartphone. The purpose of this study was designed to determine (a) the relationship between screen time use and reading achievement among fifth graders, (b) the relationship between parents’ awareness of their child’s screen time use and their child’s actual screen time use, and (c) how well fifth-grade students’ Thinking Maps illustrate the problems associated with screen time fixation at a kindergarten to …

How Leadership Styles Can Effectively Alleviate Some Of The Organizational Stressors Of Food-Plant Workers, Latarshe Mccuthin

Theses and Dissertations

This applied dissertation was designed to investigate how leaders in the food processing industry perceive their management style and how they may alleviate some job related employee stress. There was no management training at the organization; the only training provided was for food safety for certification and licensure procedures. Once a year, the company listed a management course, but the supervisors had to pay for it without reimbursement. Further, although the course was available, most supervisors did not know of it.

The researcher developed semi-structured, in-depth interviews to answer the research questions regarding how supervisors perceived leadership styles, strategies, and …

High-Resolution Mapping Of Soil Moisture Variation Using Uas Thermal And Multispectral Imagery, Jackline Amma Timah

Theses and Dissertations

In agricultural landscapes, soil moisture regulates hydrologic partitioning, nutrient transport and water quality, land-atmosphere energy exchange that shapes local climate, and ecosystem resilience. However, traditional monitoring approaches, such as in-situ sensors and satellite imagery, often lack the spatial resolution required to capture fine-scale soil moisture variability. This study evaluated whether unmanned aerial system (UAS)-derived thermal, multispectral, and terrain variables can capture fine-scale spatial variability in volumetric water content (VWC) within an SRB in central Illinois.

High-resolution imagery was collected and paired with 50 field-measured VWC observations. Land surface temperature (LST), vegetation indices (NDVI and NDRE), spectral bands, and slope were …

Refusing To Die On The Vine: Black Women's Survival, Resistance, And Dei Labor In Historically White Institutions, Senesta D. Howard

Theses and Dissertations

This dissertation examines the lived experiences of Black women in non-diversity, non-faculty roles at historically White institutions (HWIs) who engage in diversity, equity, and inclusion (DEI) advocacy beyond their formal job responsibilities. Grounded in Black Feminist Thought and guided by Interpretative Phenomenological Analysis, the study explores how race and gender shape invisible labor expectations, emotional and psychological burdens, and strategies for safety and meaning-making. Semi-structured interviews with 12 Black women staff members yielded seven interrelated themes, including invisible DEI labor, hypervisibility, emotional exhaustion, sisterhood as a form of resistance, respectability politics, self-constructed safety, and purpose rooted in legacy and spirituality. …

Exploring Culturally Responsive Faculty Practices That Support Student Success In Community College Classrooms, Mary Catherine Flynn

Theses and Dissertations

This qualitative study explored the culturally responsive teaching practices used by six community college faculty and instructors in their in-person courses. Faculty and instructors taught courses included in certificate and degree programs related to early childhood education, human services, and criminal justice at one midwestern community college. Specific content areas included sociology, political science, and child development. Data collection for this study included comprehensive interviews with each instructor, an analysis of documents including syllabi, student assignments, and assessments, and multiple classroom observations. This study was anchored in a theoretical framework based on the constructs of culturally responsive teaching practices. Each …

Examination Of The Effects Aesthetic Enrichment And Music Have On Well-Being And Task Performance In A Workplace Simulation, Emily Budik

Theses and Dissertations

Workplace environments are often designed with a focus on efficiency, yet emerging research suggests that environmental features such as aesthetic enrichment and music may influence employee well-being and performance. The present study examined whether visual aesthetic enrichment and auditory stimulation through music could improve well-being, reduce stress, and enhance task performance within a simulated workplace task. Participants completed a 30-minute in-basket task under one of four conditions: a control environment, music only, aesthetic enrichment only, or a combined aesthetic enrichment and music condition. Measures of stress, well-being, and task performance were collected following task completion. Results indicated that neither aesthetic …

Building A Cell Specific System For In Vivo Rna Imaging Of The Endogenous Actin Gene In C. Elegans, Jasmine A. Huerta Canete

Theses and Dissertations

Messenger RNA (mRNA) plays a crucial role in protein synthesis and cellular processes, important for the development of cells such as neurons. When dysregulation occurs, it can lead to outcomes such as aberrant translation, causing neurodegenerative conditions to arise. Unfortunately, the localization of mRNA in an in vivo cell specific manner is still not understood. To address this, we decided to develop a cell-specific system to image RNA in vivo, within the organism known as C. elegans with a focus on the actin gene. The Actin gene encodes for an important cytoskeleton protein expressed ubiquitously, vital for the cell …

La Enseñanza En Línea Para Superar La Deficiencia En El Aprendizaje De La Biología En Estudiantes Del Primer Año De Una Universidad En Puerto Rico, Sergio Medina Ríos

Theses and Dissertations

Esta investigación aplicada se desarrolló a partir de una preocupación concreta observada por el investigador en su trayectoria como educador universitario en Puerto Rico: la dificultad persistente de los estudiantes de primer año para comprender conceptos fundamentales en biología. Muchos de estos jóvenes ingresan a la universidad con lagunas formativas que limitan su aprovechamiento académico, especialmente en disciplinas científicas que demandan razonamiento crítico y conceptualización abstracta.

Frente a esta realidad, el estudio propuso la implementación de estrategias de enseñanza en línea como respuesta pedagógica a dicha deficiencia. Con base en la experiencia adquirida en la impartición de cursos virtuales, se …

Teacher Perceptions Of Social-Emotional And Behavioral Factors That Impede Preschool Adjustment, Allease J. Glamore

Theses and Dissertations

Children with behavioral and social-emotional challenges struggle to adjust to the preschool environment which places increased demands on preschool teachers to implement effective strategies. The purpose of the study was to assess teachers’ perceptions regarding social-emotional and behavioral factors implicated for successful preschool adjustment. The theoretical framework guiding this study is grounded in the integration of Bronfenbrenner’s ecological systems theory, social-emotional learning theory, and behavior theory. A case study design was used to examine the perceptions and use of social-emotional and behavior interventions and supports by four early childhood teachers across two programs.

Data were collected using qualitative in-depth one-on-one …

Graduate Student Retention: Examining Why Master’S Students Leave And What Motivates Their Return In A Large Public University System, Sonja Prophete

Theses and Dissertations

Graduate student persistence is a relatively unexplored area in the literature of higher education studies; specifically, at a multi-institutional scale at the master's level. This research study examines the factors which cause students to discontinue their master's degrees, and what conditions could possibly support them returning to their program at a large urban public university system. The current study was guided by Hoyt and Winn's (2004) distinction between non-returning students, and Bean & Metzner's (1985) theoretical model of student attrition. A sequential mixed-methods study was conducted to examine the institutional and environmental influences on students' decision-making processes.

The quantitative data …

The Nonlinguistic Factors That Predict Spanish Oral Proficiency, Merrie Kay Ames

Theses and Dissertations

This study investigates the predictive power of self-assessment and nonlinguistic factors in determining Spanish oral proficiency among university learners. Drawing on data from 2,475 undergraduate students enrolled in a third-year Spanish course at Brigham Young University, the research examines how self-assessed speaking ability and experiential background variables--including age of acquisition, mission service, dual immersion, and study abroad--influence Oral Proficiency Interview - Computer (OPIc) scores. A one-way ANOVA revealed a statistically significant but modest relationship between students' calibration (self-assessment minus actual ability) and their OPIc ratings, suggesting that learners can generally approximate their speaking proficiency within two sublevels. A multiple regression …

Exploring The Individual Relationships Of Mothers' And Fathers' Parenting Styles With Emerging Adults' First-Term Gpa, Tiffany Fox Okeke

Theses and Dissertations

Parenting styles have most often been studied through the lens of adolescent academic outcomes but less is known about how mothers' and fathers' parenting styles influence academic performance separately, especially during the critical transitionary period to post-secondary education. This study examines how mothers' and fathers' parenting styles distinctly shape emerging adults' first-term academic outcomes during their postsecondary education, with a focus on the dimensions of parental warmth and control. The study uses the National Longitudinal Survey of Youth 1997 dataset and the NLSY97 Post-Secondary Transcript Data focusing on the 1997-2005 cohorts (N=3,478) along with OLS regression analyses to predict emerging …

Investigating The Regulatory Impact Of Non-Coding Rnas On Meis1, Salma Fahim

Theses and Dissertations

Myeloid ecotropic virus insertion site 1 (MEIS1) is a transcription factor involved in a myriad of functions such as hematopoiesis, cardiac regeneration, cell cycle progression, cell proliferation, and limb and organ development. Precise control of MEIS1 expression and function is essential for maintaining cellular homeostasis and preventing pathological conditions including cancer. Emerging evidence suggests that non-coding RNAs (ncRNAs) play a significant role in fine-tuning MEIS1 activity. Unmasking these regulatory mechanisms could provide potential therapeutic strategies for conditions where MEIS1 is aberrantly expressed. The present dissertation presents a comprehensive overview of current knowledge on MEIS1, synthesizing findings from the literature to …

The Role Of Dust Inputs And Sediment Phosphorus Diffusion Into Utah Lake, Utah, United States Of America, Kristen E. Smith

Theses and Dissertations

Human activities have led to excessive nutrient enrichment which is greater than lake systems can naturally assimilate. This process is known as eutrophication and it is driving significant algae growth resulting in the more common release of harmful toxins. Utah Lake, located in Utah County, UT is one such water body that even after major reductions in anthropogenic phosphorus influent, continues to experience frequent, harmful algal blooms. The extent to which natural processes, like atmospheric dust deposition and sediment recycling, contribute to the lake's phosphorus budget is still poorly understood.

To address this gap of knowledge, this study quantified phosphorus …

Using Rhizobia Seed Coatings And Soil Amendments To Combat Herbicide Toxicity For Native Legume Establishment, Ryan Matthew Glover

Theses and Dissertations

Dryland ecosystems face widespread degradation from historical mismanagement, climate change, and invasive species proliferation. Although herbicides effectively control invasive annual weeds, they often suppress the establishment of desirable perennial species, limiting restoration success. Legumes enhanced with rhizobia inoculants offer a promising approach to overcome these challenges by facilitating nitrogen fixation, improving soil microbial communities, and potentially mitigating herbicide stress. We conducted paired greenhouse and field experiments to evaluate whether rhizobia seed coatings improve the establishment of three legume species Astragalus cicer (Cicer Milkvetch), Onobrychis viciifolia (Sainfoin), and Medicago sativa (Alfalfa), in soils treated with imazapic and glyphosate. In the greenhouse, …

Targeting Pancreatic Cancer With Rapamycin-Loaded Gold Nanoparticles Conjugated To Egf Peptide: Studies On Cytotoxicity And Uptake Mechanisms Aided By Proteomic Analysis, Adeolu Oluremi

Theses and Dissertations

Pancreatic cancer remains one of the most lethal malignancies, with a five-year survival rate below 5%. While rapamycin (Rap) has demonstrated therapeutic potential, its clinical utility is hampered by systemic toxicity. To address this limitation, this study developed a targeted nanocarrier system using gold nanospheres (AuNPs) functionalized with the Epidermal Growth Factor Receptor (EGFR) peptide GE11 for the specific delivery of Rap to pancreatic cancer cells. It is to note that pancreatic cancer overexpresses EGFR. The AuNP–GE11–Rap conjugates were successfully synthesized and characterized using physico-chemical techniques, which confirmed peptide conjugation and drug loading. In vitro studies using PANC-1 cells demonstrated …

Enhancing Fuel Performance Of Molten Salt Reactors Through Improved Thermophysical Property Data, High-Fidelity Simulation, And Advanced Control Strategies, Jackson Seth Ivory

Theses and Dissertations

The deployment of molten salt reactors (MSRs) as next-generation nuclear technology requires accurate thermophysical property data, validated system models, and advanced control strategies to ensure safe and economically competitive operation. This dissertation, Enhancing Fuel Performance of Molten Salt Reactors Through Improved Thermophysical Property Data, High-Fidelity Simulation, and Advanced Control Strategies, integrates experimental measurements, thermal hydraulic simulation, and model predictive control (MPC) to enhance understanding of MSR fuel behavior under steady state and transient conditions. New density and heat capacity measurements of UF4-FLiNaK molten salts were obtained using Archimedean and differential scanning calorimetry methods, respectively, to address critical gaps for fueled …

Spatial Ecology And Population Dynamics Of Chukar Partridge, Jacob Taft Barnes

Theses and Dissertations

Chukar (Alectoris chukar) are a non-native bird that has naturalized in North America following its introduction over a century ago. Today, the species supports hunting opportunities in 11 U.S. states and one Canadian province. Despite its wide distribution and recreational value, key aspects of chukar ecology remain poorly understood. Limited information is available on the species' spatial ecology, including patterns of space use. Likewise, information regarding the influence of weather on population dynamics of chukar has not been formally conducted. As part of our investigation, we evaluated the space use of chukar in western Utah, USA utilizing GPS transmitters (Chapter …

Intrinsic Stability Of Controlled Systems Via Gershgorin-Type Estimates, David Friedbaum

Theses and Dissertations

Time delays are an inherent feature of real-world dynamical systems, arising whenever information, matter, or energy requires non-negligible time to propagate. Even small delays can destabilize systems that are otherwise well behaved, yet most standard control designs--such as PID or LQR--do not explicitly account for them and may fail when delays are present. This thesis investigates the stability of controlled dynamical systems subject to arbitrary time delays and develops new tools to determine when such systems remain stable. Our approach builds on the notion of intrinsic stability, a strong form of global stability introduced by Webb and Bunimovich, which guaranties …

Characterizing Temperature-Dependent Properties Of Fat For Improving High Intensity Focused Ultrasound Simulations, Brian Easthope

Theses and Dissertations

High-intensity focused ultrasound (HIFU) is a non-invasive therapeutic technique that relies on the precise delivery of acoustic energy to ablate diseased tissue. The presence of subcutaneous fat can significantly alter focal accuracy and treatment efficiency due to its distinct thermal and acoustic behavior. This study characterized the temperature-dependent thermal conductivity, thermal diffusivity, specific heat capacity, acoustic attenuation, and acoustic velocity of human subcutaneous fat to improve pretreatment modeling for HIFU therapies. Measurements were performed using a dual needle probe for thermal conductivity and diffusivity, differential scanning calorimetry for specific heat capacity, radiation force balance for attenuation, and through-transmission methods for …

Rab32c Mediates Osmoregulation And Calcium Homeoastasis In Dictyostelium Discoideum, Ashley Esparza

Theses and Dissertations

Vesicular trafficking is a fundamental process essential to cell viability and dictates roles in both cellular and tissue function in multicellular organisms. To further understand various vesicular trafficking processes, our lab focuses on the moderators of these processes, Rab GTPases, using the model organism Dictyostelium discoideum. This dissertation focuses explicitly on the uncharacterized protein Rab32C, a homolog of human Rab32. While several Rab family members have been well defined, the functionality of Rab32C remains poorly understood. This project investigated both the subcellular localization and functional role of Rab32C with biochemical, imaging, and molecular assays. Results from this study provide evidence …

Plant Preservation: The Contribution Of Bacteriophage And Transposons To Pathogenic Xanthomonas Evolution, And The Demographic And Reproductive Analysis Of Castilleja Parvula, Ciara A. Green

Theses and Dissertations

Plant preservation, whether through disease research or endemic extinction analyses, plays an important role in the relationship between humans and our surrounding environment. In these analyses, both the role of mobile elements in the evolution of pathogenic Xanthomonas sp. bacteria, and the demographic and reproductive analysis of Castilleja parvula, an imperiled alpine plant, are evaluated. Xanthomonas species are one of the top agricultural threats, and are known to evolve rapidly. Until now, the contributions of mobile elements and particularly bacteriophage have not been thoroughly evaluated. The contribution of these agricultural diseases to food insecurity and the devastation of crops that …

Studying Causal Inferences For Student Success In Higher Education, Prabesh Shrestha

Theses and Dissertations

Higher education institutions strive to support students in achieving their academic goals through targeted interventions and data-driven strategies. This study analyzed 19 variables, spanning student demographics, enrollment patterns, and institutional interventions, to identify predictors of students completing all enrolled courses in a semester. Using random forest, logistic regression, and bootstrap forest models, we assessed variable importance and derived causal estimates to determine their impact. Results from causal analysis indicate positive effects from session type, term load, referrals, kudos, flags, and scholarships, while negative impacts were associated with location, course delivery method, enrollment status, advisor contact, and registration interval. These findings …

Achieving More Accurate And Interpretable Fraud Detection With Double Machine Learning, Jeremy Andrew Berry

Theses and Dissertations

Fraud detection remains a critical challenge across industries such as insurance, healthcare, finance, and government. Global losses from fraud and financial crime are estimated in the trillions annually, including billions in healthcare and insurance fraud alone. While effective for prediction, traditional machine learning methods often lack causal interpretability and struggle to adapt to evolving fraud tactics. This dissertation investigates the application of Double Machine Learning (DML), an emerging causal inference technique, to enhance both the accuracy and interpretability of fraud analytics. The research compares DML against established causal inference approaches, leveraging a meta-learning framework to evaluate model performance on accuracy, …

The Relationship Between Light Physical Activity And 10-Year Weight Change In 2,868 U.S. Adults: A National Health And Nutrition Examination Survey Investigation, Chloe Diane Cory

Theses and Dissertations

The prevalence of obesity has steadily increased over the past several decades. About 13.4% of Americans aged 20-74 had obesity in 1960-1962 and the prevalence has steadily increased to 40.3% in 2021-2023--more than a 3-fold increase. PURPOSE: The aim of this study was to evaluate the relationship between time spent in light physical activity (LPA) and 10-year weight change in a random sample of 2868 women and men representative of the U.S. adult population. METHODS: Data were used from the National Health and Nutrition Examination Survey (NHANES) from the 2003-2006 data cycles. Participants were limited to non-pregnant U.S. …

Evaluating Avian And Aquatic Macroinvertebrate Communities In Wetland Reserve Easements In The Mississippi Alluvial Valley, Kara Michelle Hall

Theses and Dissertations

During the 19th and 20th centuries, nearly 80% of historic bottomland hardwood forests (BLHFs) in the Mississippi Alluvial Valley (MAV) was converted to cropland. Efforts to enhance and restore wetlands on marginal farmland have occurred since the early 1990s through the Wetland Reserve Easement (WRE) and other programs, yet few studies have evaluated ecological impacts of WREs. I conducted avian and aquatic macroinvertebrate surveys across WREs, croplands, and historic minimally disturbed wetlands to index abundance, richness, and diversity. I found WREs had less overall avian abundance, richness, and diversity than reference wetlands, whereas WREs exceeded crop sites in total richness …

Assessing Native Bee (Hymenoptera: Anthophila) Community Responses To Seasonal Wetland Management And Red Imported Fire Ants (Solenopsis Invicta) In Mississippi, Haley Michelle Hughes

Theses and Dissertations

Seasonal wetlands support the biological needs of diverse migratory and wintering waterbird species across the southern United States. Management of seasonally flooded impoundments often involves water management and soil and vegetation disturbances to promote early successional plant communities yielding abundant seeds for foraging birds. These wetlands are also occupied by native bees (Hymenoptera: Anthophila) and red imported fire ants (Solenopsis invicta; RIFA), yet how these insects respond to wetland manipulations remains understudied. I experimentally evaluated how native bee communities were influenced by various wetland management practices and reduction of RIFA populations within the wetlands. Overall, wetland manipulation techniques had no …