Digital Commons Network^™

Densest Subgraph Discovery On The Cpu, Hunter Gerard Gareau

Theses and Dissertations

The Densest Subgraph Discovery (DSD) problem is a prevalent problem in the field of graph mining, aiming to find the cohesive subgraph. Given a graph �� = (��,��) and an integer �� ≥ 2, the goal is to find a vertex sub- set �� ⊆ �� whose induced subgraph �� (��) maximizes the ��-clique density, defined as the number of ��-cliques per vertex. Larger val- ues of �� capture higher-order connectivity patterns beyond edges, enabling the discovery of more cohesive structures. There have been many solutions to this problem. However, one avenue that other graph mining problems have gone down …

Infinite Line, Infinite Knowledge: The 'Spera' And Organized Chaos In Lambert's Encyclopedia, The 'Liber Floridus', Ava Romano

Theses and Dissertations

The Liber Floridus is a medieval encyclopedia renowned for its program of circular diagrams, or sperae. Inside this manuscript of 190 chapters, these diagrams frame and embody written knowledge, revealing a connection between encyclopedism and life in the Benedictine monastery by creating a coherent visual organization of chapters.

Simulation Of Quantum Walks For Secure Data Access Patterns, Arslan Ahmad Janjua

Theses and Dissertations

Quantum computing is revolutionizing computational science, offering fundamentally new approaches to information processing that surpass classical limitations. One of the most versatile and powerful tools in this emerging field is quantum walks. Quantum walks are quantum analogs of classical random walks that leverage superposition and interference to explore complex spaces efficiently.

This thesis will explore how discrete-time scattering quantum walks can be simulated and analyzed to investigate patterns of secure data access. By modeling quantum walks on a variety of graph structures and studying the dynamics of marked vertices, the project aims to demonstrate how quantum interference and graph topology …

Structural Characterization Of Peptide Nanoaggregates At Varying Concentrations And Their Impact On Cellular Responses, Malika Rozmetova

Theses and Dissertations

Peptide nano-assemblies can regulate cellular pathways in a structure-dependent manner. Here, we show that the enzyme-responsive peptide NapFFK(NBD)Yp forms distinct nanoscale assemblies at different concentrations, triggering differential ER stress and extracellular vesicle release in MDA-MB231 cells. These results highlight the importance of supramolecular organization in peptide–cell interactions.

Mass Tourism And Sustainability Discourses: A Rhetorical Analysis Of Stakeholder Communication Across The Canary Islands, Iceland, And Puerto Rico, Carmen Collins

Theses and Dissertations

This study analyzes 123 websites from the Canary Islands, Iceland, and Puerto Rico, each including an equal number of tourism businesses, environmental organizations, and governments from each region, to examine the rhetorical digital communication strategies used and the textual differences between these websites. Thematic analysis was the methodology employed in this study. Ten themes were found inductively from the data, which are: 1) economic value framing, 2) cultural identity and heritage, 3) technological mediation, 4) inspiring guilt, awe, and urgency, 5) sustainability as an instrument, 6) intergenerational responsibility, 7) global versus local contestations, 8) accessibility and inclusion, 9) transparency and …

Servant Leadership And Student Achievement In High Schools: Graduation Rate And Regents Performance In Mathematics And English, Saida Rodriguez-Tabone

Theses and Dissertations

This quantitative, correlational study examined how teachers’ and families’ perceptions of principals’ servant-leadership behaviors relate to student outcomes in New York City (NYC) public high schools. Guided by Greenleaf’s (1977) servant leadership theory, the study examined whether leadership grounded in purpose, empathy, and collaboration is associated with improved academic outcomes. Data were drawn from the 2022 NYC School Survey Reports for 122 schools across the five boroughs of NYC school district. Composite indices representing teacher- and family-perceived servant leadership served as predictors of three school level outcomes: 4-year graduation rate, Algebra I Regents proficiency, and English Language Arts (ELA) Regents …

Rooted In Education: Defining And Exploring Characteristics Of School Learning Gardens And Their Influence On Student Development In Urban Settings, Jason Samuel Fuller

Theses and Dissertations

This study employed an explanatory sequential mixed-methods research design, grounded in a constructionist framework, to investigate the educational significance and perceived impact of school learning gardens in urban settings. It examined the intended outcomes of various school garden models, including their contributions to academic achievement, health, community engagement, and social-emotional well-being. The study explored similarities and differences among school gardens and the perceptions of school administrators and garden facilitators regarding their value, as well as how garden design and characteristics relate to student experiences and educational goals. Quantitative data were drawn from publicly available sources, including the NYC DOE’s Sustainability …

A Qualitative Study On Teaching Strategies For Comprehension Of Ambiguous Language Among Adolescent English Language Learners, Gonzalo Grant Castro

Theses and Dissertations

Ambiguous language—words, phrases, or sentences with multiple meanings—often creates significant instructional challenges in English Language Development (ELD) classrooms. This qualitative case study, grounded in Vygotsky’s sociocognitive theory, investigates how four high school ELD teachers strategically employ scaffolding and social interactions to clarify such ambiguities. In this study, classroom observations, semi-structured interviews, and detailed analyses of instructional artifacts served as key data sources. These methods provide a comprehensive picture of the classroom dynamics that shape teacher and student interactions, allowing for greater insight into the relationship between instructional strategies and the social context of learning. This study identifies critical elements that …

Exploring Elementary Students’ Perceptions Of Community-School Partnerships: Effect On Academic Motivation, Tolisa Khelawan

Theses and Dissertations

This qualitative case study aims to explore the perceptions and experiences of elementary-aged students when participating in community-school partnerships to provide educators with strong methods of supporting students’ academic, social, and emotional development. The study is conducted in an elementary school in proximity to New York City that includes a diverse racial and ethnic demographic student body. The elementary school’s commitment to participating in community-school partnerships has prompted efforts to incorporate service-learning projects for the students. Through interviews, observations, and analysis of school documents, this study examines the experiences of students, teachers, parents, and the school leader during community service …

The Effects Of Youth Extracurricular Involvement On The Home Environment Of Millennial African American Families, Joyce Merius Speed

Theses and Dissertations

This phenomenological qualitative study explored how youth extracurricular involvement shapes the home environments of Millennial African American families. Guided primarily by Ecological Systems Theory, with Critical Race Theory as a complementary lens, the study examined how parents navigated interconnected systems of home, school, peers, and community while responding to racialized barriers embedded in youth programs. Data were collected through semi-structured interviews, observations, and document analysis with six African American mothers. Seven themes emerged: extracurricular activities, family dynamics, parental involvement, academic achievement, social development, cultural identity, and time management. Findings showed that extracurricular participation strengthened family communication, routines, and cohesion; supported …

The Relationship Between Teacher Self-Efficacy And Student Achievement, Rowena Costa

Theses and Dissertations

his non-experimental correlation study examined the relationship between teacher self-efficacy and student achievement. The participants were elementary teachers and their students in grades 3-5. Teachers' self-efficacy was measured by teacher responses from Tschannen-Moran & Hoy's Teacher Sense of Efficacy Scale. Student achievement scores were obtained from the 2018-2019 New York State English Language Arts and Mathematics Assessments. Other factors such as teaching experience and teacher evaluation were variables in this study. Simple linear regressions and one-way ANOVAs were conducted to look closely at the relationships between the variables. The results revealed that teachers’ years of experience in the field positively …

The Impact Of School Type, Community, And School Factors On Sixth-Grade Students In New York, John Trotta

Theses and Dissertations

Throughout New York State, sixth-grade learners are taught in a wide variety of schools with various configurations in diverse communities. The institutional and environmental differences may impact students' learning as they navigate a complex transition year. This non-experimental ex post facto study examined whether school type, community, and school factors were associated with the academic proficiency of sixth-graders in English Language Arts and Mathematics in New York State. In addition, the study identified the strongest predictors of high school graduation rates. The theoretical lens of Erikson’s psychosocial theory and Bronfenbrenner’s ecological systems theory was used. This study included 1,112 public …

Homework And Well-Being: A Case Study Of Educator, Administrator, And Parent Perspectives In A Long Island Elementary School, Marie Frances Fonzo

Theses and Dissertations

This case study examined stakeholders’ perceptions of homework’s impact on elementary students’ emotional well-being and examined district policy structures designed to support student mental health. Grounded in John Sweller’s Cognitive Load Theory, the study explored how intrinsic, extraneous, and germane cognitive loads interact to elicit a range of emotional responses to homework. The researcher collected data through principal interviews, teacher focus groups, and parent surveys at the Long Island School District. The findings revealed that homework generates both positive and negative outcomes, depending on the assignment's complexity, the support provided, and the student's home environment. Students in primary grades (K …

The Engagement Of One-To-One Devices In A Community Eligibility Provision Public School Environment, Leonard William Wright

Theses and Dissertations

This quantitative dissertation examines the relationship between one-to-one device engagement and the academic performance of elementary students in a high-poverty Long Island district. The problem addresses the difference between simple access to a platform or undirected platform use and instructionally purposeful technology that supports learning. The purpose is twofold: to determine whether platform activity adds predictive value for state assessment performance beyond baseline achievement and demographics, and to identify developmental patterns that can inform improvement. Guided by the SAMR and TPACK frameworks, the study positions effective technology integration as the intentional alignment of digital tasks, pedagogy, content, and feedback. A …

Commercial Off-The-Shelf Electronic Warfare Threats To Global Positioning System Receivers, Matthew P. Robinson

Theses and Dissertations

This research evaluates the feasibility of commercial-off-the-shelf (COTS) hardware developed into an electronic warfare (EW) system used to degrade or deny Global Positioning System (GPS) receivers. All 16 critical infrastructure sectors rely on GPS signals to operate safely and effectively. Millions of Americans rely on GPS signals and the services they provide in their daily lives, so the loss of these vital services would dramatically impact our society. Our nation’s reliance on the GPS network makes it a potential target for COTS EW threats. The ways and means to develop COTS hardware into EW systems to interfere with GPS receivers …

Disability And Demographic Influences On Advanced Placement Calculus Performance: A Quantitative Analysis, Edward J. Storck

Theses and Dissertations

This quantitative study examined equity in Advanced Placement (AP) Calculus outcomes for students with Individualized Education Programs (IEPs) in New York State. Using statewide data from 16,457 AP Calculus AB and BC exam takers in 2023, the study investigated whether disability status, race/ethnicity, economic status, and English language proficiency predicted performance and the likelihood of passing. Findings revealed that disability status was not a statistically or practically significant predictor of AP Calculus outcomes; students with IEPs performed comparably to peers without IEPs once enrolled. No significant interaction effects were found between disability status and other demographic variables, suggesting that students …

Biogothic: New Directions In The Haunted Spaces Of Nineteenth Century Gothic Fiction, Jessica Mintzes

Theses and Dissertations

The BioGothic is a set of biological metaphors in nineteenth century Gothic fiction that anticipates our contemporary understanding of what we now think of as biological processes. The BioGothic system in the novel captures the site of connection and interaction between the body and the interior spaces it inhabits. The Gothic genre, from its inception, shifts the focus onto interior spaces and the ways in which architectural spaces and the Gothic body interact with one another. This demonstrates, in part, how physical space and biological matter are not only capable of becoming integrated with each other, but also maintain the …

Metabolic Syndrome Beyond Diagnostic Criteria: Population-Scale Integrative Metabolomics Characterization, Marwa Talal

Theses and Dissertations

Background: Metabolic syndrome (MetS) is a complex cluster of interrelated metabolic abnormalities associated with elevated cardiometabolic risk. While diagnosis is based on well-established five clinical criteria, these may overlook early or atypical metabolic alterations. Large-scale metabolomic profiling offers an opportunity to identify biochemical signatures of MetS beyond diagnostic bias and to evaluate their relative importance across different presentations of the syndrome.

Methods: Data from 117,147 UK Biobank participants were analyzed in a cross-sectional design. High-throughput NMR quantified 75 circulating metabolites, for. Univariate analyses, MetS subtype stratification, and elastic net models with SHAP interpretation were applied to assess feature …

Literacy Intervention At The Middle Level: A Mixed-Methods Examination Of The Implementation Of Thinking Maps, Ashley Chantal Choice

Theses and Dissertations

This study examined the implementation of Thinking Maps® as a literacy instructional intervention for students in grades four and five. Using an explanatory sequential mixed-methods design, the study investigated the effect of Thinking Maps® on student achievement, changes in students’ literacy-related work products, and teachers’ perceptions of the strategy. The study was conducted at a rural Title I elementary school in the southeastern United States and included nine teachers and 150 students across English language arts, mathematics, science, and social studies during an eight-week intervention period. Quantitative data included unit pretest and posttest scores from standards-aligned assessments and teacher perception …

Enhancing Hospital Length Of Stay Using Ai Agent Modular Capabilities, Dami Fred

Theses and Dissertations

Hospital Length of Stay (LOS) analysis is essential for managing hospital efficiency and financial performance, yet the analytical depth required remains inaccessible to many organizations due to technical and resource constraints. This thesis introduces the AI Agent Modular Capabilities (AIAM) framework, which decomposes LOS analysis into discrete, codifiable capabilities integrated into a single skill activatable with one prompt. Seven AI Agent Modular Capabilities were developed using a Work Breakdown Structure and tested against a simulated hospital scenario across three successive skill versions. Results demonstrate that the packaged AIAM skill produces comprehensive, consistent, multi-section LOS analyses from a single interaction, outperforming …

Type Ii Diabetes Treatment Comparison Via Compartment Modeling, Abigail M. Collins

Theses and Dissertations

Type II diabetes mellitus affects one in ten adults worldwide, yet the effects of treatment type and adherence level on developing complications and quality of life have not been well characterized at the population level, and mathematical modeling offers a structured way to examine these dynamics. This thesis adapts the Boutayeb et al. (2004) model to incorporate dynamic treatment types and levels of adherence, producing nine scenarios in which complication development rate and complication recovery rate differed, to compare peak complications and quality of life across treatment and adherence conditions. Using a system of ordinary differential equations and compartment modeling, …

Thinking Machines: Cybernetics, Artificial Intelligence, And Technological Anxiety In The American Cold War, Erin Mae Wilcox

Theses and Dissertations

Following the Second World War, cybernetics emerged as a cross-disciplinary study in philosophy, neurophysiology, electrical engineering, and mathematics. Cyberneticists proposed the formal study of the man-machine analogy; that is, to equate biological structures to a complex mechanical system. Drawing from this analogy, cyberneticists used programmable digital computers to emulate the functions of the human brain. The study of artificial intelligence emerged within this cybernetic discourse in the early 1950s; yet, by the mid-1960s, the two disciplines suffered a methodological fracture. Drawing from a tradition generated by this fracture, historians have traditionally examined cybernetics and artificial intelligence in isolation from one …

Fostering A Growth Mindset In Mathematics: Faculty And Student Experiences, Yolanda G. Rush

Theses and Dissertations

According to the Center for Community College Student Engagement (2019), many students attending two-year institutions need productive persistence strategies, including the development of a growth mindset. Although some growth mindset interventions have been effective in improving academic achievement among students (Boaler, 2016; Canning et al., 2024) and persistence (Lewis, 2019) among students, especially those with developmental needs (Suh et al., 2019) and those in mathematics, little is known about the experiences of students and teachers (i.e., students’ perceptions of teachers’ intentions and implementation) as teachers work to foster a growth mindset culture (Murphy et al., 2021). In this dissertation, I …

Classifying Mathieu-Zhao Subspaces In Products Of Cyclic Rings, Sarah A. Huber

Theses and Dissertations

Mathieu-Zhao subspaces are a generalization of ideals in an algebra and were introduced by Wenhua Zhao in connection to the Jacobian conjecture and its variants. These subspaces have interesting properties, and often the problem of classification is hard. In this thesis, we investigate the structure of Mathieu-Zhao subspaces of the cartesian product of integers modulo powers of a prime p, Zpr × Zps . We will give a complete classification of the subgroups, maximal subgroups, Mathieu-Zhao subspaces, and maximal Mathieu-Zhao subspaces in these rings.

Fuchs' Problem For Quasi-Cyclic Groups, Dalen F. Elliott

Theses and Dissertations

Fuchs’ problem asks which groups can arise as the group of units of a ring. Although the finite cyclic case has been completely classified, much less is known in the infinite setting. This thesis contributes to this problem by investigating quasi-cyclic. (Pr¨ufer) groups and their finite direct products. We show that for every odd prime p, there is no commutative ring R such that R×∼= Cp∞. This obstruction arises from characteristic restrictions and the algebraic structure of finite fields. More generally, we prove that any group in which every element has order a power of an odd prime p and …

Managing Multi-Drug Resistance: An Evolutionary Game Theory And Optimal Control Approach, Shukhrat Nasrulloev

Theses and Dissertations

Multi-drug resistance is an evolutionary process in which treatment eliminates sensitive cells, allowing resistant clones to dominate. This thesis investigates this process using a framework integrating population dynamics, evolutionary game theory, and optimal control theory. We develop a two-population logistic growth model describing competition between drug-sensitive and drug-resistant cells under treatment, construct dose-dependent payoff matrices and replicator dynamics to characterize evolutionary competition, and derive a critical drug level D_crit = (r_S - rR)/(dS - d_R) at which resistant cells gain a fitness advantage. An optimal control problem is formulated via Pontryagin's Maximum Principle to identify schedules …

Data-Driven Partitioning In Distributed Optimization For Networked Systems, Prosper Azameti

Theses and Dissertations

The convergence behavior of distributed optimal power flow (OPF) depends strongly on how the power network is partitioned into regions. Classical graph-based methods such as METIS are widely used, but they rely mainly on static topological criteria and do not explicitly incorporate operating-point-dependent information that may affect distributed optimization performance. This thesis develops a data-driven partitioning framework for distributed OPF using graph neural networks (GNNs). Each OPF scenario is represented as a graph in which buses are nodes and transmission lines are edges. Node and edge features capture both structural and operational characteristics of the network. Partition prediction is formulated …

Characterizing A Low-Gradient Stream In Central Illinois As Gaining Or Losing And Observing Seasonal Changes In This Behavior, Eric Timothy Brunner

Theses and Dissertations

While the seasonal behaviors of low-gradient streams have been studied, the behavior of surface water and groundwater interactions within low-gradient streams in glaciated terrain is not fully understood. A third order, low-gradient glacial stream with a saturated riparian buffer in central Illinois was studied to determine the direction of flow between the surface water and groundwater. The goals of this study were to determine 1) whether the stream was gaining or losing water, and 2) whether the gaining or losing nature of the stream-aquifer system changes seasonally. At both an upgradient and downgradient location, two wells were installed: one in …

Symmetry In Latin Hypercubes, Levi Neiburger

Theses and Dissertations

Let [n] = {1, ..., n}. A hypercube H of order n and dimension d is a d-dimensional array whose nᵈ cells are indexed by [n]ᵈ. A hyperplane in H is obtained by fixing one coordinate, while allowing the remaining d–1 coordinates to vary. We wish to color each cell of H from a palette of n^d-1 colors such that each hyperplane is polychromatic.

Our main result is the following. Let n be sufficiently large. There exists a symmetric coloring of the d-dimensional hypercubes of order n whose all hyperplanes are polychromatic if and only if: …

From Deference To Dialogue: How International Gtas From High Power Distance Cultures Adapt To U.S. Classroom Dynamics, Deborah Akua Afi Appiah

Theses and Dissertations

International graduate teaching assistants (GTAs) from high power distance cultures play a significant role in undergraduate education at U.S. universities, yet they face challenges that go well beyond language proficiency. Coming from educational backgrounds where teacher authority is unquestioned and hierarchical, these GTAs must navigate American classrooms that operate on fundamentally different assumptions, where authority is earned rather than assumed, informality is the norm, and students expect to question, negotiate, and be personally known by their instructors. The present study examined how eighteen (18) international GTAs from seven (7) high power distance countries perceived and adapted to these differences while …