Digital Commons Network^™

Spatio-Temporal Modeling & Goodness Of Fit Testing For Ecological Fire Data, Jedidiah Olof Lindborg

Theses and Dissertations

An analysis of fire data sets resulting from controlled burns was performed. Spatio-temporal models were applied to the data sets to determine which covariates are significant in predicting fire temperature. The data sets were censored and only contain temperatures above 300C, due to a limitation in the measuring device. To handle the censoring, an extrapolation was used to reconstruct the temperatures below 300C. Models were created and run for a data set with the extrapolated temperatures and a data set with all censored temperatures removed. Several aspects of the model were evaluated, such as the chosen hyperparameters, the spatial covariance …

Cultivating Smiles On The Frontier: The Making Of Brazil’S Soybean Capital And Community Building In Sorriso, 1980-2020, Nathalia Francio Cocenza

Theses and Dissertations

This dissertation explores the transformation of Sorriso, a small municipality in Mato Grosso, Brazil, into one of the world's leading soybean producers, placing its local history within the broader context of global agricultural and economic shifts from 1980 to 2020. Sorriso represents the unique convergence of local, regional, and international forces that reshaped Brazil's agricultural landscape. This study critically examines the political, environmental, and social dynamics that positioned Sorriso at the forefront of soybean production, illuminating the town's transition from a remote frontier settlement to a global agribusiness hub.

Through a detailed analysis of previously unstudied archival sources, interviews with …

Camp In The Kitchen: Feminism And Craft In Liza Lou's Beaded Worlds, Aurora X. Bell

Theses and Dissertations

Kitchen (1991–96) was the first major work of art by American artist Liza Lou. It is an installation of a life-size kitchen in which every surface and object is covered in glass beads. Kitchen, which Lou refers to as a monument to women’s unsung domestic labor, received considerable critical attention and drew the artist into ongoing conversations around the relationship between “fine art” and “craft” and about the role of feminism in the art of the 1990s. In contemporary interviews, however, Lou expressed discomfort with the label of “craft” as well as with feminist art that she considered “didactic.” …

Promoting The Mathematical Success Of High School Geometry Students Through Project-Based Learning, Amanda Shankle-Erdman

Theses and Dissertations

This action research study explores the impact of project-based learning (PBL) on the mathematical success of high school geometry students, particularly those from low socioeconomic backgrounds. Students from low SES households often face challenges in acquiring foundational math skills, which in turn leads to low math-related self-efficacy and poor academic performance. The study aimed to determine whether implementing PBL enhances students' understanding of geometry, improves students’ math-related self-efficacy and anxiety, and changes students’ attitude toward math by creating real-world connections to their lived experiences. Using a convergent mixed-methods approach, the study collected both qualitative and quantitative data from high school …

Multi-Dimensional Strategies Impacting Beginning Readers’ Word Solving And Engagement, Brooke Clayton

Theses and Dissertations

This dissertation studied the impact of reading instruction on beginner-level readers’ decoding skills and engagement among four first-grade students in Lexington, South Carolina. The following research question directed the study:

Will an instructional strategy foregrounded on direct, systematic phonics instruction in conjunction with multi-dimensional reading strategies improve beginner readers’ decoding skills and engagement?

The study is grounded in several theoretical frameworks, including Scarborough’s Reading Rope (Appendix A), the Simple View of Reading, the Active View of Reading (Appendix C), Onset-Rime phonics instruction, and Self-Determination Theory. Interventions included the LETRS Science of Reading Phonics Small Group Plan (Moats & Tolman, 2019) …

Bridging The Gap: Implementation And Perception Of High-Leverage Practices Among General And Special Educators, Jacqueline Ann Viotto

Theses and Dissertations

This dissertation explores the use and perception of High Leverage Practices (HLPs) among general and special education teachers within educational settings. Utilizing a concurrent mixed-methods research design, the study integrates quantitative surveys and qualitative interviews to examine how HLP knowledge and use by educators. This dissertation investigates the knowledge and use of HLPs in inclusive settings through the following research questions:

1. What is the self-reported knowledge and use of HLPs by teachers?

2. What are the differences in self-reported knowledge and usage of HLPs in inclusive environments when comparing general education and special education teachers?

3. How do general …

Filling In The Gaps: Evaluating A Self-Regulated Learning Strategy For Middle School Students Using Action Research, Leslie Eller Southerland

Theses and Dissertations

The purpose of this action research study was to evaluate the effects of a self-regulated learning innovation on middle school students’ self-regulated learning skills. One way to address problems such as student motivation, student engagement, and distracting behaviors in the classroom is to explicitly teach self-regulated learning skills such as goal setting, strategy use, self-monitoring, and systematic practice. Two research questions guided this study: (1) How and to what extent does a self-regulated learning innovation impact 7th and 8th grade students’ self-regulated learning skills (planning, self-monitoring, evaluation, reflection)? (2) In what ways do 7^th and 8^th grade students …

Functional Data Analysis On Life Expectancy And Healthcare Expenditure, Hagen Sanchez

Theses and Dissertations

This study analyzes the life expectancy for 237 countries from 1950-2023 and the healthcare expenditure for 50 countries from 1970-2022, and how life expectancy and healthcare expenditure relate to each other. Functional Principal Components Analysis was used to analyze the life expectancy and healthcare expenditure for each of the countries. Additionally, the regions of the countries were analyzed to identify any regional trends for the life expectancy data. Due to missing data and the structure of the healthcare data, multiple imputation methods and Principal Component Analysis techniques were explored for the healthcare data. Furthermore, a simulation study was conducted to …

Approaches To Enhancing Multiple Hypothesis Testing Methods With Side-Information, Siyu Zheng

Theses and Dissertations

Lesion-symptom mapping (LSM) studies offer insight into the brain areas involved in various aspects of cognition. This is commonly done via behavioral testing in patients with a naturally occurring brain injury or lesions (e.g., strokes or brain tumors). This results in high-dimensional observational data where lesion status (present/absent) is non-uniformly distributed, with some voxels having lesions in very few (or no) subjects. In this situation, mass univariate hypothesis tests have severe power heterogeneity where many tests are known a priori to have little to no power. Additionally, high-dimensional observational data can be grouped according to brain anatomical structure.

In this …

Effects Of Science Of Reading Pedagogy On Student Self-Efficacy In The Elementary Intervention Classroom, Emily Marie Robinette

Theses and Dissertations

This action research study investigated the effects Science of Reading pedagogy and curriculum have on students’ reading self-efficacy within the setting of the elementary intervention classroom. The theoretical framework, Albert Bandura’s self-efficacy theory, guided the study’s research questions, review of literature, methodology, and data analysis. The conceptual framework of the Science of Reading theory and educational movement served as the primary source of design and implementation of the intervention. Students participated in pre-, mid-, and post intervention interviews which measured students’ perceptions about their reading self-efficacy throughout the intervention period. They also participated in weekly reading self-efficacy questionnaires, which provided …

Retaining Teacehrs In A Small, Rural District In A Post-Pandemic World, Sonya Murrah Bryant

Theses and Dissertations

This dissertation in practice uses improvement science to examine the system in an attempt to improve teacher retention. The improvement project centers around improving teacher retention in a small, rural school district in a post-pandemic world. The district in question saw a stark increase in teachers leaving the district after the pandemic. The improvement team consisting of six district certified staff members including the superintendent, the assistant superintendent for personnel and instruction, the director of special services, the public information officer, a primary school principal, and a teacher. After collaboratively designing a fishbone diagram and driver diagram to analyze the …

The Impact Of Teachers’ Cultural Competence On Curriculum Development In Advanced English Courses, Rhine D. Kirkland

Theses and Dissertations

As student demographics become increasingly more diverse, it is imperative that classroom teachers are responsive to the needs of learners from varied backgrounds. The purpose of this study was to examine the impact of teachers’ cultural competence on their curriculum development in advanced English courses. This case study provided insight on the use of administrative instructional coaching as a professional learning approach to aid in teachers’ creation and implementation of culturally responsive curriculums based on the tenets of Culturally Relevant Pedagogy. The analysis and triangulation of survey, interview, document, and observation data yielded key themes regarding the considerations and conditions …

Impact Of Simulation On Project Management Knowledge, Self-Efficacy, And Student Perceptions: An Action Research Study With Non-Traditional Undergraduate Students In A Project Management Capstone Course, Deborah Marindin

Theses and Dissertations

This study investigated the effectiveness of a project management simulation in enhancing non-traditional undergraduate students' project management knowledge, self-efficacy, and perceptions in a project management capstone course. The simulation tool, SimulTrain®, provided an authentic, real-world context to bridge the gap between theoretical knowledge and practical application. Utilizing mixed-methods action research, the study comprehensively evaluated the simulation’s impact on students’ learning. The research was guided by three questions: (1) How does a simulation activity affect non-traditional students’ project management knowledge in a capstone course? (2) To what extent does the simulation impact their self-efficacy? (3) What are students’ perceptions of learning …

Exploring Professional Development Of Expatriate Teachers In Kuwait Through Mentoring, Taji Abdul-Raheem

Theses and Dissertations

Professional growth as a teacher is fundamental for teacher retention and an overall determinant of favorable student outcomes. Academic research underscores professional development as an indicator of success for a school’s success as well. Expatriate teachers in Kuwait, who comprise a significant portion of the workforce, come from various backgrounds and levels of readiness for teaching in a contextually and culturally unfamiliar setting. Due to how teachers are hired and approved for teaching without induction, an implementation for continuous professional development has yet to be materialized for teachers in the private sector. This qualitative study leverages Improvement Science to diagnose …

Hearing All The Colors: Stories Of Engagement From Teachers' Perspectives, Carolyn Allison

Theses and Dissertations

This qualitative case study documented four high school English II End of Course teachers' stories about student engagement in the classroom. Students of color, in particular, have been maligned for underperformance on state-mandated tests. Instead of focusing on the despairing headlines and data, this study focused on how teachers follow the state standards and district curriculum guides to increase success. The teachers' authentic voices on student engagement shine through their stories. Student engagement is not a one-size-fits-all scenario which these teachers prove.

The teachers' stories served as the data for this study. The data was viewed through the lens of …

Apathy Or Agency: Exploring Civic Engagement With Ap Psychology Students, Regina Dilley

Theses and Dissertations

Sensing my high school students’ apathy toward civic engagement, I used a community of inquiry framework to address this problem of practice. Through mixed-methods action research, I explored participants’ perspectives on community, civic engagement, and their involvement in both spheres. A community of inquiry framework was the foundation for my research questions, and as I collected data, I launched an intervention based upon my findings. Although the results of this study were not statistically significant and are not generalizable, I collected a wealth of survey, interview, and reflection data from 48 students across two classes. Analysis grounded in my observations …

A Neuro-Symbolic Ai Approach To Scene Understanding In Autonomous Systems, Ruwan Tharanga Wickramarachchige Don

Theses and Dissertations

Effectively understanding scenes requires a unified representation of scene data and background knowledge. A neuro-symbolic AI approach to scene understanding leverages such a unified representation to enable advanced expression, inference, and labeling of scenes, improving the perception of autonomous systems.

Scene understanding remains a central challenge in the machine perception of autonomous systems. It requires the integration of multiple sources of information, background knowledge, and heterogeneous sensor data to perceive, interpret, and reason about both physical and semantic aspects of dynamic environments. Current approaches to scene understanding primarily rely on computer vision and deep learning models that operate directly on …

The Impact Of Artificial Intelligence On The Sport Industry: Trademark Challenges And Legal Issues For Sport Brands, Suji Kim

Theses and Dissertations

This study explores the intersection of artificial intelligence (AI) and trademark law, focusing on the implications of AI-driven brand management in the sport industry. As AI technologies increasingly shape marketing strategies, particularly through fan engagement and content creation, they present new legal challenges, especially concerning trademark infringement, false endorsement, and the protection of athletes’ Name, Image, and Likeness (NIL) rights. The study analyzes key legal issues arising from AI’s role as both a tool and a potential legal actor in brand management, emphasizing the evolving definitions of “use in commerce” and the liability of sport organizations and third-party platforms.

Through …

Relative Hazard Losses Along The Atlantic And Gulf Coasts, Erin Kemp

Theses and Dissertations

Coastal areas face a variety of natural hazards, many of which are increasing in frequency or severity due to climate change. Continued coastal development emphasizes the need for a better understanding of the impact of these hazards on coastal communities. This study aims to improve this understanding by investigating temporal, spatial, and causal patterns in county-level relative losses (RL) from hazards along the Atlantic and Gulf Coasts from 2001 to 2021. Three research questions are addressed: 1) Are relative losses increasing over time in coastal counties? 2) Where are the highest relative losses among coastal counties? and 3) Which hazards …

An Efficient Detection And Deep Clustering Based Pipeline For Reliable Rodent Ultrasonic Vocalization Analysis, Sabah S. Anis

Theses and Dissertations

Ultrasonic vocalizations (USVs) are critical for understanding rodents' emotional states and social behaviors. However, manual analysis of USVs is time-consuming, subjective, and prone to errors. This thesis presents an automated pipeline that addresses these challenges by performing efficient USV detection and clustering. The proposed approach significantly reduces the time and effort needed to analyze USV data while improving accuracy and reproducibility.

To address this gap, we introduce ContourUSV, a five-step pipeline for USV detection. First, it begins with generating spectrograms from audio recordings, which are then pre-processed to enhance the contrast between USVs and background noise. Key steps include median …

Exploring Cultural Capital And Literacy Practices In Chinese Immigrant Families: A Critical Ethnographic Case Study, Yuechen Sun

Theses and Dissertations

This dissertation explores the cultural capital and literacy practices of Chinese immigrant families residing in a Southeastern U.S. city. Using an ethnographic case study approach, the research examines two groups of Chinese immigrant parents: those with higher educational backgrounds and those who are restaurant owners. The study investigates how parents’ educational and cultural backgrounds influence their perceptions of and commitments to their children’s education, as well as their home literacy practices. It also explores their understanding of the model minority stereotype and their views on educational equity in the U.S. The findings reveal that both groups of parents value education …

Professional Learning Communities And Digital Literacy: A Framework For Elementary Education, Lauren Hunt

Theses and Dissertations

As digital technologies redefine the definition of literacy, elementary teachers face the challenge of effectively integrating digital literacies into their classroom spaces. This dissertation examines how professional development can enhance teachers’ understanding and implementation of high-quality digital literacy practices. Grounded in the New Literacies framework, the study identifies key characteristics of effective digital literacy instruction and explores how professional development that is contextualized, meaningful, and sustained can foster these practices. Using data from classroom observations, professional learning communities, and teacher interviews, the research highlights how individualized coaching and collaboration empower teachers to create authentic, engaging, and critical digital literacy experiences. …

Post-Selection Inference In Regression Models, Qinyan Shen

Theses and Dissertations

This dissertation develops new methodology for valid statistical inference following model selection in various regression settings. We first consider the logistic regression model for a binary response that can only be observed at the group level, as in group testing, and is subject to testing error. With the true responses only partially observed, we employ the expectation-maximization (EM) algorithm to account for missing information in the response data and simultaneously conduct variable selection using the LASSO-penalized log-likelihood function. After variable selection, we extend an existing post-selection inference method based on the polyhedral lemma \parencite{lee2016exact} to make inferences on selected covariates, …

Exploring Technology Use And Loneliness Among African American Older Adults, Sarah Pace

Theses and Dissertations

Loneliness among African American older adults is a pressing public health concern, affecting more than one-quarter of this population and increasing the risk of premature death. This study explores the experiences of loneliness among African American older adults and examines the technologies they use, the purposes they serve, and their perceived role in mitigating loneliness. It also investigates barriers and facilitators to technology use for promoting social connection. Guided by the Social Support Theory and Technology Acceptance Model 3 (TAM3), the study centers the perspectives of an underrepresented population.

Fifteen African American women aged 67–82 participated in semi-structured interviews between …

Methods And Applications For Bayesian Semiparametric Survival Analysis, Zile Zhao

Theses and Dissertations

Survival analysis is a cornerstone of biomedical and clinical research and plays an important role in fields as diverse as engineering, actuarial science, and sociology. In this dissertation, we develop new semiparametric Bayesian methodology for three problems from survival analysis: 1) adjustment for treatment crossover in randomized controlled trials (RCTs), 2) multilevel modeling of clustered survival outcomes when the cluster size is also informative, and 3) divide-and-conquer Bayesian inference for massive survival data. Our methods are semiparametric in the sense that we assume the covariates have a linear effect with regard to the log-hazard or the log- survival time; however, …

The Moderating Effects Of Religious Support And Family Support Between Racial Discrimination And Psychological Health Outcomes Among Black Adolescents, Tiera Cleveland

Theses and Dissertations

Racial discrimination is a common experience for Black adolescents. This study aimed to examine family support and religious support as a moderating variable between discrimination and mental health among Black adolescents. This study utilized data from an existing data set, the National Survey of American Life-Adolescent (NSAL-A). The NSAL-A included 1170 adolescents: 810 African American¹ and 360 Black Caribbean². The sample contained an equal amount of female (n = 608) and male (n = 562) Black adolescents³, who range in age from 13 to 17 years. Significant findings suggest that family support moderates the impact …

Quinone-Mediated Extracellular Electron Transfer In Escherichia Coli During Glucose Oxidation Metabolism, Megan Danielle Whisonant

Theses and Dissertations

The growing global demand for energy, ongoing reliance on fossil fuels, and increasing water pollution from industrial and anthropogenic sources present significant environmental challenges. In response to these issues, renewable and sustainable energy sources offer substantial potential for reducing dependence on fossil fuels and ensuring access to clean water. Microbial electrochemical systems (MESs) have emerged as promising, eco-friendly solutions for energy-efficient wastewater treatment and bioremediation. A key challenge in MESs development is facilitating effective electron transfer between microorganisms and electrode surfaces. The first chapter of this thesis discusses the fundamentals of MES types, explains mechanisms of extracellular electron transfer, and …

Action Research Integrating Heggerty’S Phonemic Awareness Instruction For Transfer Into Third-Grade Writing, Jennifer Elizabeth Jones

Theses and Dissertations

Writing requires the ability to encode phonemes to separate sounds to spell. Students who are mystified by print often find writing a laborious task. This action research investigated the impact of Heggerty's Bridge the Gap phonological instruction on third grade writing development, specifically focusing on elaboration. Recognizing that strong phonological foundations are crucial for both reading and writing success, this study addressed the gap in phonological instruction found in upper elementary grades. The research questions guided the research: What is the impact of phonological awareness instruction on third-grade students’ elaboration domain in writing? 2.) What are the third-grade students' perceptions …

The Potential Importance Of Microenvironment On Polymer Bound Chemical Reagents, Nathan Joseph Halsteter

Theses and Dissertations

In this thesis will provide a brief history of polymer bound reagents, their uses, and advancements. The importance of polymer microenvironments will be explored using a model kinetic resolution reaction utilizing polymer bound reagents to observe how changes in a polymer’s microenvironment effects the yield and selectivity of a reaction. It was found that there are copious factors that affect polymer bound reagents, and no direct conclusion could be drawn from the study.

Impact Of Participation In Extracurricular Activities On Female Students’ Motivation, Noha Ibrahim

Theses and Dissertations

This study investigated the impact of extracurricular activities (ECAs) on academic motivation among female high school students at a semi-governmental international school in the UAE. It addressed three research questions: (1) the effect of ECA participation on academic motivation, (2) students’ perceptions of how these activities influence their motivation, and (3) teachers’ perspectives on their impact. I conducted this action research in a school of 4,500 K-12 students predominantly local and from high-income backgrounds with an international teaching staff. Participants included grade 11 and 12 female students (ages 16–18) enrolled in one of four clubs (Reading, International, Sports, and Art) …