Energy-Efficient Security For Narrowband Iot Using Blockchain And Ep-Cumac, Hafizullah Kakar

UNF Graduate Theses and Dissertations

The Narrowband Internet of Things (NB-IoT) continues to expand but faces challenges such as cryptographic overhead and energy consumption. Security frameworks such as blockchain and Energy-Performance Cumulative Message Authentication Codes (EP-CuMAC) rely heavily on SHA-256, which is not optimized for energy-limited devices.

This work unifies two complementary approaches, a hybrid blockchain-based NB-IoT framework and an EP-CuMAC-based framework, by engineering their cryptographic core with an Energy Complexity Model-optimized SHA-256 (ECM-SHA256). ECM applies parallel memory-bank mapping and block-level access optimization to reduce redundant power usage while preserving algorithmic integrity.

Experimental evaluation on identical Intel DDR3 systems using pyRAPL shows energy savings of …

Experimental Validation Of Optical Wireless Communication And Power Transfer For Uav Applications, Fnu Dhruv

UNF Graduate Theses and Dissertations

Unmanned Aerial Vehicles (UAVs) have revolutionized emergency response, disaster assessment, and search-and-rescue operations. However, their operational efficacy is fundamentally constrained by limited battery endurance and the susceptibility of traditional radio-frequency communication to disruption in adverse weather. To address these limitations, this thesis proposes and experimentally validates a novel architecture integrating Free-Space Optical (FSO) communication with Simultaneous Lightweight Information and Power Transfer (SLIPT). This system utilizes a split-beam configuration to concurrently enable high-bandwidth data transmission and optical energy harvesting to replenish the UAV's battery pack. The research was conducted in three progressive phases. Initially, system feasibility was established through rigorous optical …

The Un-Bridged Pipeline: Leading And Preparing Women Of Color To Senior-Level Higher Education Administration, Jacqueline D. Slater

UNF Graduate Theses and Dissertations

Despite increased educational attainment among Black women, representation in senior‑level leadership positions within higher education remains limited. This qualitative study examines the experiences of Black women who serve or have served in senior‑level academic administrative roles and explores how those experiences inform guidance, preparation, and decision‑making for future Black women leaders. The study focuses on practical barriers, workplace realities, and strategies that shape leadership entry, advancement, and retention.

Using a descriptive case study design, five Black women with professional experience as presidents, provosts, vice provosts, and academic deans participated in semi‑structured interviews lasting 45 to 75 minutes. Purposeful sampling ensured …

Exploring The Lived Experiences Of Families Of Students With Significant Disabilities In Accessing Community Transition Supports In Rural Settings, Michael David Green Jr.

UNF Graduate Theses and Dissertations

The transition process beyond high school can be daunting for students with disabilities and their families. Families often encounter difficulties accessing community-based supports after students leave the K–12 education system despite federal legislative mandates under the Individuals with Disabilities Education Act (IDEA) and the Workforce Innovation and Opportunity Act (WIOA). Rural contexts further complicate the experience for families accessing adult services after high school. The current hermeneutic phenomenological study explored how families of students with significant disabilities experienced accessing community transition supports after leaving high school in rural contexts. Through the lens of van Manen’s hermeneutic phenomenology, the study explored …

Integrating Inquiry, Peer Observation, And Professional Learning Communities: Teachers’ Experiences With A Job-Embedded Professional Learning Design, Tiffany Outman

UNF Graduate Theses and Dissertations

Professional learning is often experienced through disconnected initiatives that limit opportunities for sustained collaboration, reflection, and instructional growth. This qualitative action research study explored teachers’ experiences with the integration of teacher inquiry, peer observation, and professional learning communities (PLCs) as a design for job-embedded professional learning within an elementary school setting. The study emerged from an existing culture of collaboration and peer observation at Timber Oaks Elementary, a suburban elementary school in Northeast Florida, and examined what happened when inquiry was intentionally integrated into those structures as the next stage of the school’s professional learning journey. While the professional learning …

Cryptic Social Mechanisms And Associated Consequences In The Gouldian Finch, Thomas Mateo

UNF Graduate Theses and Dissertations

Many species of birds rely on visual displays to communicate information to their conspecifics, but it can be difficult to determine the specific functions of such displays. In the Gouldian Finch and its relatives, the contexts in which the peering display has been witnessed indicate that it has multiple uses in social learning such as song learning and communicating reproductive intent. Two flocks of finches were housed separately at the University of North Florida aviary and observed for several months while nest boxes were placed in each habitat. In both flocks, peering increased during the summer molt, but did not …

Operationalizing Mtss: A Case Study Of Principal Leadership Practices In Guiding School-Based Leadership Teams Through Inquiry And Improvement Science, Heather M. Teto

UNF Graduate Theses and Dissertations

The COVID-19 pandemic widened academic achievement gaps, creating an urgent mandate for school leaders to implement systemic, data-driven frameworks to support student academic recovery. While the Multi-Tiered System of Supports (MTSS) is a widely adopted framework for addressing these disparities, its success is dependent on the strategic involvement and instructional leadership of the school principal. This qualitative case study explores the lived experiences and leadership characteristics of elementary school principals as they lead School-Based Leadership Teams in implementing a district-developed MTSS framework.

Guided by the principles of Improvement Science and the Plan-Do-Study-Act (PDSA) inquiry cycle, this research examines the specific …

Suspended Futures: Exploring The Lived Experiences Of Black Adult Males Affected By Exclusionary Discipline, Tamara Jones

UNF Graduate Theses and Dissertations

Black males continue to experience exclusionary discipline at disproportionately high rates in American schools, often resulting in academic disruption and long-term educational and social consequences. While existing research had extensively documented disciplinary disparities, less attention had been given to how Black males interpret and make meaning of these experiences over time. This hermeneutic phenomenological study explored the lived experiences of Black adult males who experienced exclusionary discipline during their secondary school years and examined how they now make sense of those experiences in adulthood. Grounded in Critical Race Theory and Social Cognitive Theory, the study focused on participants’ perceptions of …

Fostering Reading: Review Of A College Bridge Program For Deaf And Hard Of Hearing High School Students, Cara Wilmot

UNF Graduate Theses and Dissertations

This mixed-methods formative program evaluation examined the reading component of a summer College Bridge Program (CBP) designed for high school students who are deaf and hard of hearing (d/Dhh). Persistent disparities in reading outcomes among d/Dhh students have been linked to differences in language access, communication access, and opportunities to receive specialized instruction. Using the Context, Input, Process, Product (CIPP) evaluation model, this study evaluated how the CBP identified and addressed students' reading needs, implemented evidence-based instructional practices, and supported reading development through a three-week summer program.

Participants included 45 d/Dhh high school students from 12 southeastern states, as well …

Novice Teachers' Perceptions Of Clinical Experience And Their Preparedness To Teach In High-Need Urban Schools, Robin D. Renelus

UNF Graduate Theses and Dissertations

This hermeneutic phenomenological study examined novice teachers’ perceptions of how clinical experiences in a teacher preparation program prepared them to teach in high-need urban schools. The study included 12 novice teachers with three or fewer years of teaching experience who completed their clinical experience at the same university in Northeast Florida. Data were collected using Seidman’s (2019) three-interview approach, which explored participants’ backgrounds, day-to-day teaching experiences, and reflections on their sense of preparedness. Data were analyzed to develop textural descriptions of what participants experienced and structural descriptions of how those experiences were shaped (Moustakas, 1994).

Participants described clinical experiences as …

Exploring The Undergraduate Student Perceptions Of Sense Of Belonging At Their University: A Q-Methodological Approach, Jose Acevedo

UNF Graduate Theses and Dissertations

       The transition to higher education is a significant life event requiring substantial social, academic, and psychological adjustment, during which a powerful sense of belonging is critical for student success and retention. While traditional models of student retention often prioritize support services and academic integration, they frequently overlook the intricate relational dynamics and deeply personal subjective experiences that shape belonging. This research utilized Q methodology to explore the multifaceted ways undergraduate students at the University of North Florida (UNF) understand and prioritize the determinants of institutional belonging. Guided by an integrated conceptual framework of Maslow’s Hierarchy of Needs, Self-Determination Theory, Social …

From Preparation To Practice: A Study Of Assistant Principals After Completion Of An Aspiring Assistant Principal Preparation Program, Mallory L. Mcconnell

UNF Graduate Theses and Dissertations

Leadership programs and readiness in schools, particularly those in Florida, is well studied. However, few studies have investigated how current assistant principals who have completed Clay County District School’s Aspiring Assistant Principal Program describe their experiences, believe the program has prepared them for the realities of school leadership, or identify the most impactful elements that have supported their leadership development. This case study seeks to collect foundational research knowledge by analyzing data from the program, participants, and key facilitators. Using a sampling of current assistant principals who have completed the Aspiring Assistant Principal Program, this research examines the results in …

Growth And Dielectric Characterization Of Epitaxial Sr1-Xmgxtio3 Thin Films, Richard Badu

UNF Graduate Theses and Dissertations

Complex oxide materials with ferroelectric ground states remain promising candi dates for next-generation high-capacitance and nonlinear microelectronic applica tions. One of those materials is SrTiO3 (STO). However, STO is an incipient fer roelectric with anomalously high dielectric permittivity at low temperatures. STO crystals possess a highly polarizable lattice that is sensitive to even small amounts of impurities. Substituting Mg into the STO matrix is predicted to induce a corre lation between ferroelectric and relaxor behavior. In this thesis, we demonstrated the growth of a series of epitaxial STO and Sr1-xMgxTiO3 thin films using molec ular beam epitaxy. The surface evolution …

From Framework To Fidelity: A Cipp Evaluation Of Mtss Implementation In A Rural Secondary School, Jodi Arroyo Nagel

UNF Graduate Theses and Dissertations

This formative program evaluation examined implementation of the Multi-Tiered System of Supports (MTSS) at Rowling Middle High School, a rural secondary school in Northwest Florida. Using the Input and Process domains of Stufflebeam’s Context, Input, Process, and Product (CIPP) evaluation model, this evaluation sought to assess the resources currently in place to support MTSS implementation and the extent to which MTSS procedures were implemented with fidelity across grade levels and target subject areas, namely ELA/English/Reading and Math courses. Data were collected through analysis of the 2025-2026 Rowling master schedule, six classroom observations, six semi-structured staff interviews, individual responses to the …

Implementing Multi-Tiered Systems Of Support For School-Based Mental Health Services: An Explanatory Case Study Of An Elementary School, Laura Acker

UNF Graduate Theses and Dissertations

This qualitative explanatory case study examined how school-based mental health services (SBMHS) are implemented within an elementary school’s Multi-Tiered System of Supports (MTSS). Guided by the Consolidated Framework for Implementation Research (CFIR) and sensemaking theory, the study examined how educators and school-based professionals interpret and enact their roles in supporting student mental health within educational contexts. Data were collected through interviews with five MTSS team members and analyzed using a combination of deductive and inductive coding. Results showed that mental health implementation is not a fully integrated system of supports but rather a process shaped by roles and relationships influenced …

Library Support For Massive Open Online Courses (Moocs) In The Philippines: The Case Of American Corners, Princess Grace Wooden, Darin Jan Tindowen

Library Philosophy and Practice (e-journal)

This study examined the role of libraries in supporting Massive Open Online Courses (MOOCs) in the Philippines, with particular focus on American Corners as library-based learning spaces. Grounded in the increasing demand for flexible and accessible education, the study aimed to assess the readiness of American Corner libraries and determine the extent of MOOC implementation, as well as examine the relationship between these variables. A quantitative descriptive-correlational research design was employed, involving 28 American Corner staff composed of directors and librarians from 14 participating institutions. Data were collected using a validated survey questionnaire and analyzed through frequency, percentage, weighted mean, …

Uncovering The Disciplinary Pulse Of Library And Information Science Through Large-Scale Topic Modelling Of Openalex Scholarly Literature, Sailendra Malik, Sukumar Mandal

Library Philosophy and Practice (e-journal)

Library and Information Science is among the oldest and intellectually pluralistic scholarly disciplines but the inner thematic structure has not been established. The article develops a systematic and data intensive mapping of the field by the Latent Dirichlet Allocation topic modelling to 7,824 articles in the English language indexed in OpenAlex in the year 2000 to 2025. A ten topic solution is an optimised solution that identifies a group of readable and sensible thematic domains including information literacy digital libraries scientometrics archives and scholarly communication. The analysis of temporal trajectory reveals that there have been consistent expansion at the emergent …

Rethinking Library Opac: From Siloed Retrieval To Ai And Ml-Driven Discovery Using Fastapi And Mysql, Sukumar Mandal

Library Philosophy and Practice (e-journal)

The paper explores integration methods between MySQL and FastAPI to develop dynamic Online Public Access Catalog services including functionalities for modern libraries and information centers. It addresses evolving user expectations by replacing rigid keyword-based search models with adaptive, intelligent discovery experiences that prioritize search relevance. The goal involves transforming traditional library retrieval tools into contextual discovery platforms that effectively understand specific user intent and complex needs. The prototype was created on Ubuntu in a customized Python environment. It uses FastAPI to manage asynchronous API calls and MySQL to store bibliographic data. SQLAlchemy abstracts the database layer, and Pydantic validates data. …

Availability And Utilization Of School Library Resources And Its Impacts On The Academic Excellence Of Secondary School Students In Edo State., Iyobosa Ewere Mrs., Ben Asuquo, Glory Mbah Mrs.

Library Philosophy and Practice (e-journal)

The study examines availability, and utilization of school library resources and its impacts on the academic excellence in secondary school libraries in Edo state. The descriptive survey research was adopted for the study. The population of the study was 2162 senior secondary school students from Idia Girls’ College, Boiling Point Academy and UNIBEN Demonstration Secondary School. The sampling techniques used for the study was Random Sampling Technique, a total of 216 respondents was used as the sample size representing 10% of the total population. A well structured questionnaire was designed and distributed to respondents .A total of 216 copies of …

From Digital Skills To Digital Ventures: Exploring The Influence Of Digital Competence On Infopreneurship Intentions Of Library And Information Science Students In Nigerian Polytechnics, Uwaebuka Wisdom Madu Dr., Stephen Adekunle Ajayi Dr

Library Philosophy and Practice (e-journal)

The focus of this study was to investigate the influence of digital competence on infopreneurship intention among Library and Information Science (LIS) students in federal polytechnics in South-West Nigeria, a context characterized by high graduate unemployment and rapid digital transformation. Guided by the Theory of Planned Behaviour and Eshet-Alkalai's Digital Literacy Model, a descriptive survey design was employed. The population comprised 638 final-year LIS students across four federal polytechnics, with a sample of 468 selected through multi-stage sampling. A validated questionnaire with a reliability coefficient of 0.828 was used for data collection. 388 responses amounting to 82.9% response rate was …

Direct Ink Writing Of Shear Exfoliated Two-Dimensional Nanomaterial- Elastomeric Multifunctional Nanocomposite, Md Abdur Rahman Bin Abdus Salam, Asif Hasan Ridoy, A K M Abirul Haque, Muhammad Shahbaz Rafique, Md Arafat Hossain, Md Shahriar Forhad, Matthew G. Boebinger, Farid Ahmed, Karen Lozano, Ali Ashraf

Manufacturing & Industrial Engineering Faculty Publications

Direct ink writing (DIW) of polymer nanocomposites with high loadings of two-dimensional (2D) nanofillers (graphene and hexagonal boron nitride (hBN)) is challenging because of potential clogging, use of hazardous solvents, and agglomeration. Here, in this work, a shear exfoliation and sieving method to prepare DIW ink with high loading of nanofillers produced from low-cost bulk layered materials such as graphite and bulk hBN powder for successful DIW printing without the use of any solvents, binders, or plasticizers. The single-step exfoliation technique resulted in a composite with substantial layer reduction along the c-axis, as confirmed by SEM, TEM, XRD, and Raman …

The Executive's Takeover Of Independent Agencies: How Institutional Design Gave Way To Political Will, Neal Devins

Faculty Publications

The anticipated demise of the independent agency is a saga that implicates Congress as much as it does the President or the Supreme Court. By capitulating to presidential initiatives and failing to defend their institutional prerogatives, Congress has facilitated presidential control of the administrative state. Indeed, irrespective of whether the Court formally repudiates Humphrey’s Executor, Congress has largely acquiesced to a regime whereby presidents essentially control independent agencies. By highlighting the competing incentives of Congress and the White House, this Essay explains the rise of presidential unilateralism vis-à-vis independent agencies. This Essay also casts light on a critically important but …

Firearms And Fora: Constructing Public Carry Doctrine, Timothy Zick

Faculty Publications

Where can a person lawfully carry firearms in public? Under what conditions can they do so? Now that the Supreme Court has formally recognized a Second Amendment right to public carry, these are among the most important unresolved questions regarding the right to bear arms. The Second Amendment’s public carry doctrine is in its infancy. How the doctrine develops will have a profound impact on the exercise of Second Amendment rights in public places and on the public square. Integrating a new constitutional right into the public square is not a novel problem. After the Supreme Court recognized First Amendment …

To The Hague And Beyond: The Shifting Terrain Of International Criminal Justice, Leila Nadya Sadat, Valerie Oosterveld, Sharon Weil, Nancy Combs, David Crane

Faculty Publications

Panel of international criminal law experts speak about the areas in which they work.

The Open Knowledge Fellowship: An Opportunity For Transformative Learning At The Doctoral Level, Elvis Bakaitis, Jill Cirasella, Patrick Mcgee

Publications and Research

How can we integrate the principles, practicalities, and complexities of open educational resources (OER) and open access scholarly literature into graduate-level education? At the Graduate Center of the City University of New York (CUNY), the popular and successful Open Knowledge Fellowship offers a much-needed intervention in doctoral education by addressing these topics and associated debates. Between 2020 and 2025, the intensive six-week Fellowship program was offered 12 times and trained over 200 doctoral students from across the disciplines in the selection and use of openly licensed resources in the courses they teach. These 200+ students then taught their revamped courses …

Color-Blind Resilience: How Uniform Climate Standards Reproduce Environmental Inequality In The Rockaways, Aaryan M. Nair

Publications and Research

This paper examines how ostensibly uniform climate resilience standards can reproduce environmental inequality in socially uneven landscapes, using the Rockaway Peninsula in New York City as a critical case study. While flood-resistant building codes, zoning regulations, and insurance frameworks are designed to provide equal protection across flood-prone areas, this analysis argues that their “color-blind” application obscures and intensifies underlying disparities in financial capacity, housing conditions, and tenure. Drawing on environmental justice (EJ) theory, the paper identifies two key mechanisms through which inequality is reproduced. First, “code without capacity” demonstrates how uniform technical standards—such as elevation requirements under NYC Building Code …

Appendices A, B, C, D, & E For "In Their Own Words: Qualitative And Quantitative Analyses Of What Students, Staff, And Faculty Say About Vertical Transfer", Alexandra W. Logue, Vita Rabinowitz, Kerstin Gentsch, David Wutchiett, Barbara Condliffe, Sophia Sutcliffe, Yoshiko Oka, Stephanie Abbeyquaye, Rhina Torres, Nayeon Yoo, Kyle Du

Publications and Research

Deposited here are the Appendices (A, B, C, D, & E) for an article to be published in 2026 in Journal of Postsecondary and Student Success. The abstract of this article is:

This research analyzed higher education constituencies’ statements about vertical transfer (student transfer from community to bachelor’s colleges). Data consisted of both focus group excerpts involving dozens of students, staff, and faculty, and of answers to open-ended survey questions completed by thousands of students and faculty. Results were generally consistent using both qualitative (topic identification) and quantitative (bigram frequency and sentiment analysis) analyses. The results were also compared …

Gendered Resistance: Women’S Strategies Against Military Dictatorships, Argentina And Chile, Maricarmen Canales-Moreno

Publications and Research

This article compares the Madres de Plaza de Mayo in Argentina and the Agrupación de Familiares de Detenidos Desaparecidos (AFDD) in Chile to examine how women transformed their identities as mothers, wives, and daughters into strategies of political resistance under military dictatorship. It argues that maternal imagery, public mourning, and the transformation of private grief into collective defiance enabled women-led human rights organizations to challenge authoritarian regimes while strategically drawing on gender roles those regimes sought to enforce. The article traces the emergence of both organizations, their occupation of public space, hunger strikes, legal action, and engagement with international human …

"Activist" Versus "Passive" Investors: A Closer Look At Proxy Contests And The Contemporary Balance Of Advantage, John C. Coffee Jr.

Faculty Scholarship

The era of the hostile takeover has clearly given way to the era of the proxy contest led by an activist hedge fund. Today, a record number of such contests are underway, and they have changed the board composition at many U.S. companies and caused a record number of CEO resignations. But there is a mystery here: when activist funds negotiate for changes with target managements, they often obtain meaningful changes in the board of directors and corporate policies. However, when activists attempt a proxy contest, they have generally been unsuccessful, winning only a small number of seats in a …

Estimating Sediment Properties Using A New Source Level Function For Wind-Driven Underwater Sound Derived From Long-Term Archival Data, S Bruce Martin, Martin Siderius

Electrical and Computer Engineering Faculty Publications and Presentations

Wind-driven breaking waves generate the background sound throughout the ocean. An accurate source level for wind-driven breaking waves is needed for estimating the ambient sound levels needed for sound exposure modeling, environmental assessments, and assessing the detection performance of sonars. Previous models applied a constant roll-off of sound levels at -16 dB/decade at all wind speeds, and these models' source levels were flat at frequencies below ∼1000 Hz due to a lack of measurements. Here, we analyzed 16 long-term archival datasets with limited anthropogenic sound sources to estimate the wind-driven source level down to 100 Hz. We estimated the site-specific …