Digital Commons Network^™

The Problem Of The Whiteness Of Wealth, Elizabeth Tharakan

Dissertations

In 2021, households with a White householder made up 65.3% of all U.S. households and held 80.0% of all wealth. Those with a Black householder made up 13.6% of all U.S. households but held only 4.7% of all wealth. And their median wealth ($24,520) was about one-tenth the median wealth of households with a White householder ($250,400). This disparity in Black wealth and White wealth is almost an order of magnitude. I seek to understand why the racial wealth gap exists and what people of any race can learn from a nuanced understanding of the interplay among culture, education, and …

A New Approach: Supporting Traditional Jazz Pedagogy Through Neuroscience, Christopher John Navarrete

Dissertations

Jazz musicians face a considerable learning curve in their performance endeavors. Numerous factors must be taken into account, including performance anxiety, memorization, active listening, ear training, mastery of musical techniques, and improvisation. Through the effective preparation of these skills, musicians tend to achieve success; however, this success fundamentally relies on the practice habits of the jazz musician.

A common approach in jazz pedagogy emphasizes the development of musical techniques such as scales and chords, modulating across various harmonic progressions. I will define this as a “traditional approach” used in jazz pedagogy. This method has been widely embraced by jazz musicians …

Solution Of Preconditioned Nonsymmetric Saddle Point Systems Through Modified Conjugate Gradient Iteration, Samson Ayo

Dissertations

In this dissertation, we present an iterative method (Preconditioned Nonsymmetric Saddle Point Conjugate Gradient) for simultaneously solving forward ($A{\bf x}={\bf b}$) and adjoint ($A^T{\bf y}={\bf g}$) linear systems. Our approach involves constructing an augmented nonsymmetric saddle point matrix that has a real positive spectrum and developing a conjugate gradient-like iteration for this matrix. We investigate the use of Schur Complement preconditioners with block-diagonal factorization computed by an incomplete QR factorization of $A$ to speed up the convergence of our method and compare the results to the preconditioned generalized least squares residual (GLSQR) and quasi-minimal residual (QMR) methods. We develop quadrature …

Shades Of Families: Exploring Intersectionalities Of Cross-Cultural Parenting Experiences In The U.S., Shu-Han Huang

Dissertations

As multiracial and multicultural families continue to grow across the United States, parents must navigate evolving cultural identities, systemic inequities, and increasing social and emotional pressures. These realities underscore the need for parenting resources that are both culturally responsive and emotionally supportive. This transcendental phenomenological study explored the lived experiences of 11 cross-cultural parents raising children in the U.S., with a focus on how intersecting identities and systemic forces shape parenting practices.

Guided by Critical Multiracial Theory and Intersectionality Theory, this study investigated parenting at the personal, familial, societal, and structural levels. Data were collected through semi-structured interviews and analyzed …

Analyzing The Impact Of Motivational Interviewing In A School Counseling Setting With Academically At-Risk High School Students, Brian Linhart

Dissertations

This study investigates the impact of motivational interviewing (MI) on the academic performance and motivation of academically at-risk high school students over an eight-week period. The primary research questions examine whether there is a statistically significant impact of using MI in a school counseling setting on academic performance and internal motivations. Data collection methods included academic performance, the Self-Reported Academic Beliefs, Behavior, and Self-Efficacy questionnaire, and the MI Pre and Post Meeting Questionnaire to assess students’ motivation and engagement. The study employs a quantitative approach using Friedman’s rank sum test and a paired t-test with a Wilcoxon Signed-Rank test, to …

The Examination Of Teacher Mentorship Design For Mentees, Cagla Cobek

Dissertations

Teacher stress has been documented as a problem for today’s educators. Improving teachers’ well-being through mentorship programs is promising in the literature. Therefore, this study examined a daily check-in mentorship program for teachers experiencing moderate stress. The researchers examined the changes in mentees’ daily stress levels, perceived stress, sense of self-efficacy, and use of proactive classroom management strategies. Mentees and mentors were also asked to complete ratings of the social validity of the mentorship program. Three mentees and mentor dyads working in an elementary and middle school in a Southeastern school district in the USA participated. A nonconcurrent Multiple Baseline …

Learning The Musical Elements From An Early Age Through The Use Of Traditional Folk And Popular Tunes In The Mother Tongue And A Compendium Of Music Resources In Spanish For General Music Classes, Román Orlando Carranza Zapata

Dissertations

This document intends to fulfill three primary purposes. One is to explore the principal characteristics of early music education methods regarding teaching and learning music from an early age through the mother tongue, also known as their native language. These methods may suggest other strategies such as: playing and singing children's games, singing traditional folk tunes, improvisation, dancing, or playing instruments for the general music classroom. The second purpose is to provide music educators with a compilation of various music resources written in Spanish, such as pedagogical books, workbooks, and online interactive musical platforms that can be used in the …

Simulating Interactions Between (Remote) Internal Waves And The Background Flows And Topography Of The U.S. West Coast, Oladeji Siyanbola

Dissertations

This dissertation focuses on the simulation of remotely and locally generated semidiurnal internal tides (ITs) and near-inertial waves (NIWs), and how they interact with the California Current System (CCS) and the U.S. West Coast (USWC) topography. In Chapter II, we force Regional Ocean Modeling System (ROMS) simulations of the CCS with tides and remote internal waves (IWs) originating from as far as Hawaii, using a realistic global HYbrid Coordinate Ocean Model (HYCOM) simulation. To allow for optimal wave energy influx and minimize boundary reflections from the interior of the domain, we conduct boundary sensitivity tests on tide and IW forcing …

What Factors Impact Teachers’ Beliefs About The Likelihood To Which Their Students With Intellectual And Developmental Disabilities Can Live On Campus, Jonathan Lidgus

Dissertations

After the Higher Education Opportunity Act was passed in 2008, inclusive postsecondary programs for students with intellectual disability (ID) have grown on campuses across the United States. These programs were designed to eliminate barriers that prevent students with intellectual disability from attending college in order to achieve positive employment outcomes and skills to increase independent living. While programs may be designed for those with intellectual disability, individuals may have multiple diagnoses, including intellectual and developmental disabilities (IDD). The relationship between a student and their secondary teachers can positively impact their future or present a barrier. Using the data from the …

Balancergnn: Balancer Graph Neural Network For Imbalanced Datasets, Mallika Boyapati

Dissertations

Addressing imbalanced datasets is challenging due to machine learning models' inclination to learn the majority class. Graph construction plays a major role in determining how Graph Neural Networks (GNNs) perform on imbalanced datasets. In this research, we introduce the BalancerGNN framework to tackle highly imbalanced datasets, demonstrating its effectiveness in fraud detection as one of the case studies. This framework is designed to work for any binary node classification dataset with significant class imbalances. This research addresses the following questions: i) How effective are feature engineering techniques in the case of imbalanced datasets? ii) How do graph representation learning and …

Exploring The Impact Of Leadership Styles On Teacher Self-Efficacy: A Comparative Case Study Of Rural And Suburban High Schools, Stephanie Hill

Dissertations

This qualitative study examines how high school teachers in rural and suburban settings perceive their school leaders’ leadership styles, and how they influence teachers’ self-efficacy. Grounded in established leadership theories and research on teacher efficacy, this investigation aims to provide a nuanced, context-sensitive understanding of leadership dynamics within diverse educational environments. The study employs a comparative case study design, sampling from two high schools—Suburban Academy and Rural Tech High School. Data collection methods include semi-structured interviews and a questionnaire, offering multiple perspectives on leadership practices and their effects on teachers’ confidence and instructional decision-making. Ultimately, the results will contribute to …

Together We Can! High School Algebra Plc Members’ Experiences On Implementing New Curriculum And Its Impact On Their Self-Efficacy, Chasity L. Hughes

Dissertations

When state or federal legislation adopts new standards, the workload falls on the teachers. Unfortunately, research has shown a decline in teachers’ preparedness due to the many changes in the standards for mathematics in Georgia in the last twenty years. Studies show that teachers have felt overwhelmed and stressed when implementing previous curriculum changes which have decreased the teachers’ self-efficacy levels. This calls for professional learning communities (PLCs) to provide improvement and sustainment in teachers’ self-efficacy in implementing the new curriculum. Little research has been done to describe the teachers’ experience with the recent change in Georgia's mathematics curriculum. There …

Nonparametric Finite Mixture Of Ising Graphical Models, Manal Hamadi Alloqmani

Dissertations

Statistical applications in fields such as bioinformatics, genomics, speech processing, image processing, and communications often involve large-scale models in which thousands or millions of random variables are linked in complex ways. Graphical models provide a general methodology for approaching these problems, and indeed many of the models developed by researchers in these applied fields are instances of the general graphical model formalism. This formalism gives a nice framework for capturing complex dependencies among the random variables and building a large-scale model for high-dimensional data. Recently, high-dimensional data are more assumed to come from one population and follow a parametric or …

Resilient Learning For Anomaly Detection In Smart Living Systems, Sahar Abedzadeh

Dissertations

Cyber-Physical Systems (CPS) rely on anomaly-based detection methods to ensure the integrity and security of critical infrastructures such as smart grids, smart water metering systems, and advanced metering infrastructures (AMI). Anomaly detection methods are commonly used to identify deviations from normal system behavior by establishing learned profiles and thresholdbased distinctions between benign and anomalous events. However, conventional frameworks often fail to account for adversarial data poisoning attacks, unlabeled unsafe events, and environmental noise—factors that distort training data, degrade detection accuracy, and increase false alarms. This dissertation proposes a resilient learning framework that mitigates these biases by integrating quantile regression, M-estimation …

Utilizing Drainage Induced Pfas Enrichment In Cascade Generated Foam For Efficient Removal At Wastewater Treatment Plants, Ethan Samuel Coffin

Dissertations

Observed trends in municipal solid waste landfills reveal a distinct disparity between per- and polyfluorinated alkyl substances (PFAS) composition entering in waste, mostly as diPAP and FTOH, and leaching out as FTCA and PFCA. These patterns are elucidated by compiling PFAS compositions in paper, textiles, and carpet, with known precursor transformations that generate FTCA and PFCA in leachate. Landfill leachate is commonly discharged to wastewater treatment plants (WWTP), which are ineffective at degrading PFAS and only serve as key conduits and discharge points for PFAS to the environment. Foam fractionation has been identified as a promising technology for concentrating and …

Turbulence And Energetic Ion Production In The Partially Magnetized Hollow Cathode Plume, Margaret Mary Mooney

Dissertations

Hall effect thrusters (HETs) are the most widely used electric propulsion (EP) device for in-space satellite propulsion. EP devices provide high efficiencies for extended mission lifetimes and low thrust for precision maneuvers. The hollow cathode is a critical HET component and undergoes extensive lifetime testing in addition to the lifetime testing of the full HET. Significant density gradients, non-Maxwellian electron behavior, and magnetic fields sufficiently strong enough to magnetize electrons in hollow cathode plumes create favorable conditions for the formation of plasma instabilities, which have an impact on cathode lifetime. Cathode qualification testing is typically conducted independently and includes a …

The Ebony Edge: A Qualitative Exploration Of Math Success Among Black College Women, April Ruiz

Dissertations

Historically, women have been underrepresented as leaders in STEM. However, according to the National Science Foundation (2022), women accounted for a little more than half of the college-educated workforce and underrepresented minority women increased in broad science and engineering occupational categories. This promising upturn underscores the importance—if progress is to continue—of better understanding why some African American women succeed in and persist with their study of college mathematics.

This study aimed to explore the experiences of Black college women attending a predominantly White institution in the Midwest, to better understand what reasons Black college women ascribe to their success in …

An Elementary Review Of Multi-Tiered System Of Support, Zachary R. Ernst

Dissertations

This research aimed to review how a large unit school district can differentiate the Multi-Tiered Systems of Support (MTSS) framework specifically for the elementary level to increase the growth and achievement of all elementary students within the district. A deep dive into publicly available student achievement data for Parkside School District was completed as part of the research and data collection. Additionally, school and district staff were given an in-depth survey about different aspects of the MTSS framework in Parkside School District. All of this data was analyzed and interpreted. The results showed that there is a need for the …

Breaking Barriers: An Educator's Pursuit To Provide Equity In Student Achievement, Christina L. Korsun

Dissertations

There is a sense of urgency to address the widening achievement gaps among minority students, students with disabilities, and English-language learners. This makes immediate school action necessary to create a more equitable learning environment. Without strategic interventions, including improved teacher retention efforts, stronger student support systems, and effective leadership, these challenges will continue to hinder student success and overall school performance. The purpose of this project is to find solutions for schools to institute to narrow the achievement gap by ensuring all students receive the support needed to succeed. Schools can respond to the learning gap by promoting equitable learning …

An Investigation Into The Effectiveness Of High School Models Of Instruction In English Language Arts For Exceptional Education Standard Diploma Students, Lori A. Rath Minton

Dissertations

This study examined the effectiveness of high school instructional models in English Language Arts (ELA) for Exceptional Student Education (ESE) students pursuing a standard diploma. The purpose was to compare self-contained and inclusion models within the framework of the Individuals with Disabilities Education Act (IDEA), emphasizing Free and Appropriate Public Education (FAPE) and the Least Restrictive Environment (LRE). The research was conducted in a medium-sized rural district high school.

The overarching research question was: Based on student test scores, ESSA data, surveys, and interviews with content area teachers, ESE teachers, paraprofessionals, support facilitators, and administrators, how effective are self-contained and …

A Multiple Case Study Of Four-Year Public, Non-Flagship Universities: Meeting Common Institutional Goals Of Increased Enrollment And Academic Profile, Alicia Kornowa

Dissertations

For several reasons, the number of students seeking and enrolling in a postsecondary education has started to decline in the United States (U.S.) and the decrease is expected to intensify for the foreseeable future. This trend is cause for concern among higher education enrollment leaders, especially those who serve at institutions not among the most elite universities or without a national brand—the campuses researchers project will have the greatest difficulty maintaining enrollment levels. Using strategic enrollment management (SEM) as an example of general systems theory and systems thinking, this multiple case study explored how four public, four-year, non-flagship institutions increased …

Quadratic Stochastic Processes: Algebraic Structures And Their Applications, Taimun Saleh Qaisar

Dissertations

This research focuses on the algebraic structures of the Quadratic Stochastic Processes (𝑄𝑆𝑃𝑠). In this work, we first study 𝜉𝑎- Quadratic Stochastic Operators (𝑄𝑆𝑂𝑠) linked to the partition P3. We simultaneously discuss the dynamics of the obtained 𝑄𝑆𝑂𝑠. Moreover, algebraic structure of the associated genetic algebra is studied. Further, we build Quadratic Stochastic Processes (𝑄𝑆𝑃𝑠) using the given Markov processes. Consequently, we obtain an ordinary differential equation for the resultant Quadratic Stochastic Processes (𝑄𝑆𝑃𝑠). Besides, we apply the solution of this ordinary differential equation for the option pricing problem. Thereafter, we construct Quadratic Stochastic Processes (𝑄𝑆𝑃𝑠) in three-dimensional space by …

Measurement Of Groundwater And Contaminant Fluxes In Fractures Using A Combined System Of Passive Flux Meter And Multiport Sampler, Qasim Raza Khan

Dissertations

Groundwater and contaminant movement in fractured rock aquifers is highly variable. Its dependence on fracture apertures and orientation as well as fracture network interconnectivity is not well understood. This poses a challenge to the measurement of groundwater and contaminant fluxes, especially when using open-hole techniques, which significantly alter natural flow conditions by connecting different fractures along an open borehole or a well. Hence, downhole techniques to directly measure groundwater fluxes and map fractures' locations, orientations, and apertures are considered valuable tools. In this work, the use of Fractured Rock Passive Flux Meter (FRPFM) with invisible tracer and visible dye component …

Overcoming Motor Imagery Bci Illiteracy: Adaptive Decoding And Knowledge Transfer In Eeg-Based Brain-Computer Interfaces, Zaid Shuqfa

Dissertations

Brain–computer interfaces (BCIs), also known as brain–machine interfaces (BMIs), enable direct communication between the brain and external devices without the involvement of peripheral nerves or muscles. Among various BCI paradigms, motor imagery (MI)–based BCIs are particularly appealing due to their intuitive, cue-independent nature, allowing users to issue control commands at will. MI–BCIs hold substantial promise for improving the quality of life of individuals with motor impairments, as well as enhancing hands-free control for healthy users. However, their widespread adoption remains limited by challenges such as low signal-to-noise ratio, inter- and intra-subject variability, and the need for frequent calibration. These challenges …

Ready, Set, No: Why Not All Successful Dual Credit High School Graduates Matriculate To Postsecondary Education, Jessica Deckard Mann

Dissertations

Dual-credit programs that allow students to earn college credentials in high school have become commonplace in the United States. Early College High Schools (ECHSs) were specifically developed to support equitable access to these programs, targeting groups that are historically underpopulated in postsecondary education (PSE). ECHSs aim to close the achievement gap, increase the number of college credentials earned by high school students, better train the workforce, and improve the life-time earnings potential of a diverse population.

The purpose of this nonexperimental quantitative study was to gather data from graduates in one Midwestern state who earned a college credential in high …

Upper-Level Undergraduate Pre-Healthcare Students’ Journeys To Graduation And Health Professional Graduate Programs, Holly L. Sisson

Dissertations

Despite decades of research on undergraduate student retention and persistence, only a handful of researchers, such as Dumke et al. (2018) and Stull et al. (2021), have looked specifically at pre-health students preparing for graduate health professional programs and the complex challenges these students face while trying to achieve their goals. Very little research focused on upper-level undergraduate students pursuing graduate health professional programs, such as physical therapy, occupational therapy, physician assistant, or similar graduate health professional programs excluding medical school. To help fill this gap, my study focused on the experiences of pre-healthcare students as they navigated their undergraduate …

How New Mathematics Teachers Develop Teacher-Student Relational Pedagogy, Dustin Kinser

Dissertations

This study investigated the support structures implemented with new mathematics teachers to help them build relational pedagogy with their students to determine their effectiveness. The literature review examines topical research, gaps in literature and theoretical frameworks to justify the study. The case study investigated new math teachers and their processes of building positive teacher-student relationships using the support structures that they were taught on their way to becoming a teacher. Math teachers were interviewed to find any common themes across the study and find out what is truly working or not working so that the process can be improved. Another …

Exploring The Relationships Between G2g, G2e And G2c E-Government Interactions And Organizational Readiness For Citizen Centricity In The Uae Government: Organizational Culture As A Moderator, Esam Al Sayed Ahmed

Dissertations

The UAE has topped the e-Gov development rankings globally over the last two decades. But during the era of the COVID-19 pandemic, certain problems befell the model of e-Gov, like no coherent strategy, inconsistencies in digital practice, inadequate collaboration, the lack of mechanisms for innovation, poor digital talent, and concerns with public trust. After the pandemic, the government released its digital strategy (2021-2025) as part of the rapid recovery plan to stimulate the economy and society. The strategy aimed at increasing sustainability and innovation and putting citizens first. Yet, the strategy can be improved in regard to how prepared government …

Examining Rural High School Students’ Perceptions Toward And Experiences With The Reading Plus Intervention Program: A Qualitative Case Study, Deshonda Wolfe

Dissertations

Reading is the gateway to all other academic skills and across all disciplines of learning. Content courses at the high school level central focus are on reading to learn core curriculum verses learning to read. However, research shows that if students read significantly behind their typical peers, the reading gap widens throughout high school. Learning is stalled, and access to other contents, curriculums, and instructions becomes limited. To address the reading proficiency gap of high school students struggling to read in grade level, school districts have turned to computer assisted interventions programs, such as Reading Plus, to combat the reading …

Domino Effect: A Case Study On The Impact Of Education Legislation On The Emotions, Self-Efficacy, Job Satisfaction, And Retention Of English Language Arts Teachers In A Rural Middle School, Melinda Palmer

Dissertations

This multiple case study uses the appraisal theory of emotions to examine how Georgia education legislation, the Georgia Parents’ Bill of Rights and Senate Bill 226, impacted the emotional experiences, self-efficacy, and job satisfaction of ELA teachers in a rural middle school. This study also examines how this legislation impacted the retention of ELA teachers at the site school. The study highlights the experiences of 3 veteran teachers who were teaching ELA during the year immediately following the passage of the legislation. The findings indicate that the subsequent procedural changes initiated unpleasant emotional experiences: anger associated with the loss of …