Digital Commons Network^™

Analyzing Professional Development To Foster Agency And Professional Growth Among Educators, Kameron Kimbrough

Dissertations

This study explores how professional development (PD) and leadership systems influence teacher agency and instructional coherence at a high-poverty, predominantly Black K–8 school in Chicago. Midwest Elementary Academy has faced persistent achievement gaps and systemic instability that hinder collaboration and teacher growth. Guided by three research questions, this exploratory case study used a mixed-methods design to examine educator perceptions of PD quality, instructional autonomy, and leadership structures. Data were collected through anonymous surveys, semi-structured interviews, classroom observations, and document reviews with four educator participants. Qualitative data were coded using open and in vivo methods, and survey responses were analyzed descriptively …

Reframing Health: A Phenomenological Inquiry Into The Lived Experiences Of Weight- Inclusive Healthcare Providers, Hannah Brass

Dissertations

The purpose of this phenomenological study was to understand the unique lived experiences of healthcare professionals who practiced from a weight-inclusive lens. This study was guided by the following research questions:

Q1 What is the unique lived experience of a healthcare provider practicing from a weight-inclusive lens?

Q2 What are the significant experiences that have influenced the development of weight-inclusive providers’ attitudes (i.e., thoughts, feelings, and behaviors)?

Data from these findings were analyzed using Giorgi’s (2009) descriptive phenomenological method to discover rich descriptions and themes of weight-inclusive healthcare practitioners' experiences. The study explored the significant experiences and supports that influenced …

Feedback Without Content Expertise: Exploring Teacher Perception Of Effective Feedback In Teacher Evaluations With Content Mismatch, Anna Keathley Bergeron

Dissertations

A key element of teacher evaluation systems is to support professional growth by providing teachers with feedback on their instructional practices and identifying opportunities for improvement. Despite this intent, research consistently indicates that teachers often perceive evaluation feedback as vague, generic, or disconnected from their instructional context. These concerns are particularly evident at the secondary level, where evaluators frequently assess teachers outside their area of content expertise. As a result, recent research suggests that a lack of content knowledge may serve as a barrier to providing meaningful feedback.

The purpose of this qualitative instrumental case study was to examine how …

Barriers To Climate Change And Sustainability Action: Nursing Education And Practice, Dawn Marie Smith

Dissertations

Climate change is one of the most pressing public health emergencies of our time and nurses can have a great impact in their current practice and in the education of future nurses (The Alliance of Nurses for Healthy Environments, n.d.; American Nurses Association, 2023; Health Care without Harm, 2025). Deaths due to rising temperatures, vector-borne illness, and food insecurity related to drought and extreme weather are on the rise (WHO, 2024). It has been estimated that globally over 250,000 additional deaths will be attributed to climate related effects between 2030 and 2050 (Watts et al., 2020; WHO, 2023).

A primary …

Making Sense Of The Faith-Based School’S Mission: An Instrumental Case Study Exploring How The School’S Espoused Mission Is Enacted, Richard Mingerink

Dissertations

What happens in the space between a school’s espoused mission and the enactment of that mission in the classroom? For faith-based schools—institutions whose very identity rests upon a religiously grounded purpose—this question is not merely technical but existential. While these schools publicly espouse missions centered on a religious faith, research consistently suggests that what is proclaimed on paper is not always what is practiced in classrooms. The persistent gap between espoused mission and enacted practice raises a critical question: how do educators actually make sense of their school’s religious mission, and how does that sensemaking shape what they do?

This …

Structure-Property Relationships In Epoxy/Amine-Derived Polyester Thermosets, Jeffrey Aguinaga

Dissertations

This dissertation relates to ester-containing aromatic epoxy monomers and thermosets formed via reaction of those monomers with either ester-containing or non-ester-containing amine comonomers.  Due to the wide array of potential reactants (many bioderivable) to form ester-containing epoxy monomers that are closely related in structure, fundamental study of structure-property relationships was highly practical for this platform of materials.

Though properties of aromatic epoxy thermosets of relatively high-crosslink density and network strand rigidity vary widely with chemical composition and architecture, relatively low fracture toughness and impact resistance due to lack of ductility are typical. Integration of ester functionality and aliphatic spacers/connectors for …

Exploring The Effects Of Polymer-Graphene Interactions On Bulk Composite Properties Using Finite Element Analysis, Bryant Grove

Dissertations

As a filler in high performance materials, graphene significantly enhances the mechanical properties of polymer composites. Experimental characterization of graphene composite enhancements is limited by labor-intensive processes in both synthesizing composites for different purposes and in characterizing the interactions between graphene and polymer composites that lead to these enhancements. Computational approaches such as finite element analysis (FEA) are suitable alternatives that go beyond experimental analysis. This dissertation demonstrates the utility of FEA in analyzing polymer graphene composites with an emphasis on modeling the interaction between graphene fillers and the matrix within the interphase formed between them. The accessible design framework …

Agents Of Agency: Identifying Teacher Traits And Trainings Associated With Promoting Student Agency, Clara Mateo

Dissertations

This study shifts the focus of mathematics teacher quality from the traditional metric of test scores to “student agency,” defined as a learner's capacity to access power, make decisions, and take ownership of their learning process. While the literature on student agency provides ample qualitative insights, it is largely composed of small-scale studies. This research addresses this gap by conducting a large-scale, nationwide quantitative analysis to identify teacher factors associated with the promotion of student agency. The central research question is: What teacher demographics, dispositions, and professional development experiences are associated with increased student agency?

This study used a cross-sectional …

An Assessment Of The Deep And Coastal Responses To Hurricane Passage In The Gulf Of Mexico, Using Complementary Observational Records And Model Simulations, Senam Kofi Tsei

Dissertations

In this dissertation, I examine and discuss different ocean features and ocean processes essential to the intensification of tropical cyclones in the Gulf of Mexico, drawing on observations, theory, and numerical model analyses across both the deep ocean and continental shelf-regimes. In the deep ocean, I integrate in situ measurements, theoretical framework, a 1D shear driven mixed layer model, and a high resolution model outputs to evaluate how salinity-driven stratification, Loop Current warm core eddies, pre-existing warm mixed layer temperatures, and the governing mechanisms mixed layer adjustment shape the upper ocean response before, during, and after storm passage. In the …

Lyapunov-Krasovskii Based Approach To Time-Delay Systems: Computational Efficiency And Feedback Control, Huan Phan

Dissertations

Time-delay systems arise naturally in many engineering applications due to sensing,actuation, communication, and computation delays. The presence of delays has a significant influence on system performance both positively and negatively. Although Lyapunov--Krasovskii functional (LKF) methods provide a systematic framework for stability analysis and controller synthesis, their implementation often suffers from high computational complexity, particularly for large-scale systems and systems involving multiple feedback channels. This dissertation addresses both computational efficiency and feedback control for linear time-delay systems.The first part of this dissertation develops a decomposition-based approach to reduce the computationalburden of stability analysis. By exploiting structured invariant subspaces associated with the …

Intelligent Surveillance For Weapon Threat Detection: Transformer-Based Detection And Segmentation Using Thermal And Rgb Imagery, Akhila Kambhatla

Dissertations

Proactive public-safety surveillance requires deep learning systems that can detect and segment weapons reliably under real-world conditions. This research develops and evaluates a progressive, multi-phase pipeline that moves (i) from RGB object detection to pixel-level semantic segmentation and (ii) from visible-spectrum cameras to thermal imagery to improve robustness under low-light, clutter, and occlusion. Early phases establish strong detection baselines using one-stage and two-stage detectors (YOLOv5 and Faster R-CNN) for multi-class weapon localization, followed by practical optimization through pruning and ensembling to reduce false positives and computational overhead while maintaining real-time feasibility. Building on the limitations of bounding-box localization, the methodology …

Perceptions And Practices: A Qualitative Study Of Middle Grades Physical Science Teachers’ Knowledge And Use Of Formative Assessment, Michelle Morgan

Dissertations

Declining content mastery scores in middle grades physical science across the River Valley School District, as reflected in College and Career Ready Performance Index data, have raised concerns about instructional practices and the use of formative assessment. Although formative assessment is widely recognized as a high-impact practice, limited research has examined how middle school physical science teachers’ conceptual knowledge aligns with their instructional planning and classroom practices. The purpose of this qualitative multiple case study was to explore teachers’ knowledge of formative assessment and the relationship between their stated beliefs and instructional practices. Participants included five eighth-grade physical science teachers …

Students’ And Teachers’ Perceptions Of The Impact Of I-Ready On Students’ Math Achievement, Tanisha L. Wright

Dissertations

This semester-long qualitative study included semi-structured interviews to gather ideas, opinions, and impressions (perceptions) regarding the i-Ready Program, a computer-based solution used to address students’ math deficiencies.  The researcher interviewed three teachers who volunteered to participate. These teachers had at least five years of teaching experience and at least two years of i-Ready use. The researcher also interviewed eight students with varying learning abilities. Parental consent was obtained to conduct the interviews.

Although this program is very popular and used in multiple school districts, this research aims to determine whether it is the best solution for our school district in …

A Cross-Cultural Comparison Of Pre-Service Mathematics Teacher Preparation Approaches In Jamaica And Historical Black Colleges And Universities In The Southeast United States, Sandra Riley-Brown

Dissertations

This qualitative comparative case study embarked on an in-depth exploration and comparison of the approaches to pre-service mathematics teacher preparation programs (PMTPP) in Jamaica and Historically Black Colleges and Universities (HBCUs) in the Southeast United States (U.S.), employing a cross-cultural lens. The primary objective of the study was to identify and analyze the similarities and differences between the methodologies utilized in PMTPP across these two regions, with a specific focus on how HBCUs addressed the preparation of culturally responsive educators. The research took two distinct phases. The initial phase involved a thorough analysis of documents provided by the participants. This …

A Case Study Of Experiential Learning In A High-Poverty Middle School, Diona F. Brown

Dissertations

This study examined the impact of experiential learning on student achievement in a high-poverty Title I middle school and explored how school leaders perceive and support its implementation. Grounded in experiential learning, active learning, and social justice theories, this research aimed to better understand how instructional practices can improve outcomes for students facing economic and educational challenges. A convergent parallel mixed-methods design was used. Quantitative data were collected through pre- and post-assessments administered to two groups of eighth-grade mathematics students: one receiving experiential learning instruction and the other receiving traditional instruction. Qualitative data were collected through surveys of school administrators …

Examining Mathematics Teachers' Competencies For Facilitating Collaborative Learning In High School Settings, Tessy J. Pereira

Dissertations

Collaborative Learning (CL) – an instructional approach in which students work interdependently in groups to achieve shared academic goals through mutual engagement – has gained remarkable attention in high school mathematics classrooms; yet research examining the pedagogical competencies teachers need to effectively plan, implement, and reflect on CL remains limited. Pedagogical competencies, as defined by Kaendler et al. (2015), refer to the observable teaching behaviors that support student collaboration throughout an instructional cycle. This case study examined how seven high school mathematics teachers demonstrated five competencies – planning, monitoring, supporting, consolidating, and reflecting – using the Implementing Collaborative Learning in …

Recruiting And Retaining Teachers In A Rural School District: A Case Study, Gerald J. Bavero

Dissertations

         This exploratory case study aimed to understand the specific strategies that rural school leaders employ to address the challenges associated with recruiting and retaining teachers in rural schools.  It sought to understand the effectiveness of these strategies within the unique economic and cultural landscape of South West County and to identify practices that could inform broader educational policy and practice in this and similar rural settings.  A qualitative case study approach utilizing semi-structured interview questions was conducted to discover what teacher recruitment and retention strategies school leaders implement and how teachers perceive these strategies.  Findings indicate both formal and informal …

Science For All: Utilizing Native And Everyday Language To Increase Academic Performance And Student Engagement For High School English Language Learners, Lashanda K. Whitworth

Dissertations

In public high schools across the U.S. high stakes assessments are seen as a lever to facilitate high-quality education and to gauge student learning. English Language Learners are mainstreamed into content classes and despite having low English proficiency scores are expected to perform as well as English first students and are required to take district and state mandated biology assessments. At the research site, ELLs comprise 25% of students and consistently score below the other subgroups in biology. This quasi-experimental study tested whether using disaggregate instructional strategies—incorporating ELLs’ native and everyday language—increases learning gains, academic growth, and engagement in a …

Federated Neuromorphic Intelligence: Advancing Robustness, Efficiency, And Continual Adaptation In Edge Environments, Manh V. Nguyen

Dissertations

This dissertation investigates how spiking neural networks (SNNs) can improve federated edge intelligence by advancing three interconnected goals: communication efficiency, adversarial robustness, and continual adaptation. As edge computing deployments expand across Internet of Things (IoT), sensing, and privacy-sensitive applications, conventional federated learning approaches built around artificial neural networks (ANNs) face growing limitations in power consumption, bandwidth demand, and resilience to real-world uncertainty. SNNs offer an alternative computational paradigm based on event-driven, sparse, and temporally structured processing that is naturally suited to constrained edge environments. However, their behavior in practical federated settings remains insufficiently understood.

To address this gap, this dissertation …

Perceptions And Beliefs Of A High School Geometry Professional Learning Community During Initial Implementation Of Standards-Based Grading, Marcellyn E. Baker

Dissertations

Traditional grading systems in secondary schools often conflate behavior with achievement, obscure evidence of understanding, and constrain teachers’ ability to enact learning-centered beliefs. This qualitative case study examined how five experienced secondary mathematics teachers in a public high school geometry department experienced and interpreted a grassroots transition to standards-based grading (SBG) within collaborative professional learning communities (PLCs). Guided by a pragmatic and constructivist worldview, data were collected through semi-structured interviews, focus groups, field observations, and questionnaires and analyzed using iterative open and axial coding with cross-group pattern analysis. Findings indicated that SBG did not fundamentally alter teachers’ beliefs about learning; …

Nomophobia In Early Adolescence: An Exploration Of Prevalence, Academic Performance, And School Policy In United States Middle School Students, Christopher Otero

Dissertations

The purpose of this study was to examine nomophobia among middle school students, investigating its relationships with grade level, smartphone OS, school smartphone policy, and academic performance. Grounded in Social Cognitive Theory, the research utilized a sample of 85 U.S. middle school students to address three research questions:

Q1 What relationships exists between middle school students’ grade levels, smartphone operating systems, school smartphone policy, GPA, and nomophobia levels?

Q2 To what extent do middle school student’s grade level, smartphone operating system, and school smartphone policy predict nomophobia?

Q3 Is nomophobia a significant predictor of GPA in middle school students?

Findings …

Certified Orientation And Mobility Specialists’ Experiences Working With Students Who Have Cerebral Visual Impairment, Elise Nobuko Darrow

Dissertations

Certified orientation and mobility specialists (COMS) provide instruction to students who are blind or visually impaired on how to navigate safely and efficiently. Visual impairments can stem from eye-related conditions or neurological issues, such as cerebral visual impairment (CVI), which affects visual processing. Cerebral visual impairment is currently the leading cause of visual impairment in children in the United States and is often accompanied by comorbidities such as cerebral palsy, which is associated with additional disabilities. Orientation and mobility (O&M) instruction focuses on teaching safe and efficient travel skills and began as a rehabilitation service for blinded war veterans who …

An Expertise-Based Approach To Training Decision-Making And Situational Awareness For Basketball Referees, Scott Warner Boatright

Dissertations

Expertise, rapid decision-making, and situational awareness are key components of high performance in many areas, including basketball officiating. Traditional methods of providing feedback on performance to basketball referees rely heavily on broadcast video and rule review, which does not adequately target the perceptual-cognitive skills associated with rapid and dynamic decision-making. The current study developed and evaluated a 360-degree video virtual reality (VR) Expertise-Based Training (XBT) program designed to accelerate expertise in intermediate-level basketball referees. Using think-aloud protocol, conducted with an expert basketball referee, expert judgments and rational were elicited and implemented as Expert-Model Feedback within the referee training program. Twelve …

Enhancing Control Charting Schemes And Exploring New Assessment Metrics To Advance Quality Control And Cyber-Attack Detection In Manufacturing, Ahmad Al Majali

Dissertations

The increasing integration of digital technologies and industrial control systems in modern manufacturing has introduced new cybersecurity vulnerabilities within cyber–physical production environments. Malicious actors can exploit these vulnerabilities to induce subtle process deviations that degrade product quality while remaining undetected by conventional statistical monitoring tools. Such attacks can be deliberately engineered to manipulate process behavior through transient shifts that vary in magnitude, duration, and frequency. Despite extensive research on transient shifts caused by assignable causes in Statistical Process Control (SPC), limited attention has been given to intelligently designed cyber–physical attacks that exploit the structural characteristics and limitations of control charting …

Enhancing Traffic Safety Through Ai-Driven, Privacy-Preserving, And Secure Impaired Driving Detection Systems, Razan Alsulieman

Dissertations

Drunk driving remains a major threat to road safety worldwide, contributing significantly to traffic injuries and fatalities each year. Traditional detection approaches are largely reactive and vehicle-centric, relying on in-vehicle sensors, breathalyzers, or post-incident enforcement. These methods often depend on driver cooperation, intrusive hardware installations, or limited monitoring environments, restricting their scalability and effectiveness in large transportation systems. At the same time, modern cities increasingly deploy roadside cameras, surveillance networks, and drone- based monitoring systems, creating new opportunities for proactive intoxication detection at the infrastructure level. However, leveraging such external monitoring introduces challenges related to secure data collection, reliable AI-based …

A Qualitative Exploration Of The Military Veteran Teaching Experience In A Public High School Setting, Denise R. Embrey

Dissertations

This coded qualitative study examines whether military veterans as second career teachers can help address the ongoing shortage of qualified public high school teachers in the United States. Focusing on three Midwestern public high school systems with at least 10% of military veteran teachers employed in their high school. I explored veterans as second-career educators. I personally interviewed five public high school principals, to find that these five strongly favor hiring veterans, citing their discipline, teamwork, and willingness to engage with students and parents are outstanding character qualifications for the public high school to have on staff. I noted and …

Factors That Affect African American Representation In Cybersecurity Academic Programs In The United States, Damon Walker

Dissertations

The U.S. cybersecurity workforce continues to experience a critical talent shortage alongside persistent inequities in racial representation, particularly at the faculty level within higher education. This mixed-methods dissertation examines African American representation among faculty in cybersecurity academic programs designated by the National Centers of Academic Excellence in Cybersecurity (NCAE-C) and investigates the factors that influence recruitment, retention, and advancement. Grounded in a transformative research framework, the study integrates quantitative analysis of national institutional data with qualitative interviews to illuminate structural patterns and lived experiences shaping representation.

Quantitative findings revealed pronounced underrepresentation: African American faculty comprise 2.57% (130 of 5,051) of …

A Design-Based Mixed-Method Study On Mathematical Fluency Interventions Implemented In A Midwestern School District, Shari Fox

Dissertations

The purpose of this mixed-methods study was to implement math fluency interventions with intention and fidelity to increase student math achievement. Recent studies have reported a decline in students' mathematics achievement scores, calling for an urgent redesign of instructional practices. Aligning with strategic organizational change, the scholar-practitioner designed math fluency activities to be implemented during math instructional time, embedding the strategies within the current curriculum, which lacked sufficient resources. The researcher then collected data from student reflections, end-of-unit assessments, and the beginning-of-year math diagnostic to design a specific implementation of math fluency activities that would help students increase their mathematical …

Mathematics In Crisis: Predictors Of Achievement For Black And Latino High School Students Post-Covid-19, David Mikel Etheridge

Dissertations

This quantitative study examines systemic factors predicting math achievement for Black and Latino high school students in Chicagoland's 2025 graduating class, using public Illinois School Report Card data. It identifies teacher qualifications, chronic absenteeism, and school ratings as statistically significant predictors, confirming systemic inequities. The study advocates for structural policy reform, targeted teacher investment, and culturally responsive pedagogy to achieve equity and disrupt barriers for marginalized students.

The Impact Of Social-Emotional Learning On Student Academic Achievement And Outcomes, Tanya L. Fields

Dissertations

This mixed-methods study examined the impact of the Second Step social-emotional learning (SEL) program on student achievement and outcomes in Forest Elementary School District (FESD). Guided by Patton’s utilization-focused evaluation framework, the research addressed five questions: (1) How has Second Step implementation during SY23–24 and SY24–25 impacted behavioral referrals in K–5 students? (2) How has it influenced NWEA, ELA, and Math grades in SY23–24 and SY24–25? (3) To what extent do teachers and leaders feel prepared to implement SEL and the Second Step program? (4) How effective is the training and support provided by school leaders? and (5) What additional …