Digital Commons Network^™

Understanding Whole-Brain Dynamics Through Generative Modeling, Ruiqi Chen

Arts & Sciences Graduate Student Theses and Dissertations

A central goal in cognitive neuroscience is to map mental processes onto their physical substrates. Traditionally, this goal is pursued by associating different mental processes with spatially-based anatomic localization. On the contrary, much less is known about the temporal dynamics of neural activity, particularly at the scale of the whole brain. Research into whole-brain dynamics has been challenging primarily due to the lack of an analytic framework that can summarize such dynamics, expose the underlying mechanisms, and associate the mechanisms with cognitive processes. In this dissertation, I describe my doctorate research aimed at building such a framework and deploying it …

Phase-Resolved Measurement And Arbitrary Mode Conversion Of Structured Light, Somayeh Ghazanfarpour

Electronic Theses and Dissertations

This dissertation presents a single-shot phase and amplitude retrieval technique based on spatial light modulator (SLM)-based digital holography. The proposed method enables accurate reconstruction of complex optical fields from a single interferogram, reducing sensitivity to environmental fluctuations and improving experimental stability compared to conventional multi-shot approaches. In addition, a programmable arbitrary mode converter is developed using SLM-based wavefront shaping. By introducing controlled astigmatism and engineering the differential Gouy phase between orthogonal components, the system enables flexible transformation between structured light modes, including Hermite–Gaussian and Laguerre–Gaussian beams. Numerical results demonstrate reliable phase recovery and efficient mode conversion, validating the performance of …

The Palm Farm Next-Door: Land Concessions, Livelihoods, And Nutrition In Plantation-Adjacent Communities, Julia Entwistle

Electronic Theses and Dissertations

Large-scale land concessions have reshaped agrarian landscapes globally, yet their implications for community land tenure, livelihoods, and nutrition remain unevenly understood. This dissertation examines how plantation agriculture and foreign investment have transformed land access, labor relations, and food systems in Liberia, a country with one of the highest proportions of land under concession globally. Guided by a political ecology framework, the study employs a mixed-methods design integrating policy analysis, in-depth interviews, and household surveys across two palm oil concession sites. The findings show that ambiguous land policies historically facilitated dispossession, while recent legal reforms have enabled communities to strategically mobilize …

School Policy, Health Equity, And Lgbtq+ Youth: Implications Of Mahmoud V. Taylor, Anna Folta

Online/Hybrid MPH Integrative Learning Experience (capstone projects)

School-based policy functions as a critical lever for reducing health disparities among LGBTQ+ youth, who face elevated risks of suicidality, bullying, unsafe school environments, and housing instability. An extensive body of research identifies inclusive school practices—such as affirming curricula, supportive staff, and student organizations—as key protective factors that foster belonging and improve mental health outcomes. However, recent political and legal developments threaten the implementation and consistency of these protections.

Using a structured literature review and comparative policy analysis of federal, state, and district responses, this project integrates public health evidence with legal interpretation to assess how emerging parental opt-out frameworks …

2026-06-12 Agenda Booklet, Morehead State University. Board Of Regents.

Morehead State Board of Regents Agenda Books and Meeting Minutes

Agenda booklet for the Board of Regents meeting of June 12, 2026, held in Prestonsburg, which includes the meeting minutes of the meeting held on March 27, 2026.

Re: Approval Letter For The Quarterly Operations And Maintenance Report Grove Gulch Sedimentation Bay For Fourth Quarter 2025 Silver Bow Creek/Bute Area Npl Site – Butte Priority Soils Operable Unit Consent Decree-Civil Action No. Cv 89-039-Bu-She (Dated May 15, 2026)., Emma Rott

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Quantifying Terrain Controls On Satellite-Based Snow Water Equivalent Estimation: A Spatially Explicit Machine Learning Approach, Brant Giovannetti

Geography and the Environment: Graduate Student Capstones

Terrain variables are widely incorporated into machine learning Snow Water Equivalent (SWE) models but are rarely evaluated for their independent contribution relative to spectral predictors. Using a four-tier stepwise Random Forest framework with Harmonized Landsat Sentinel-2 imagery and Airborne Snow Observatory LiDAR ground truth, this study isolates the contribution of elevation, slope, northness, and eastness across Peak and Ablation snowpack regimes in the East Taylor River Watershed, Colorado. During peak snowpack, adding terrain improved R² by 0.214, with elevation alone accounting for 42.8% of model importance. During ablation, full-dataset terrain gains were modest, increasing R² by only 0.036. However, when …

Geospatial Governance Failures In The Department Of Defense: Contractor Noncompliance, Ai Adoption, And The Parallel Treatment Of Gis And Cybersecurity, Lyndsey Olmstead

Geography and the Environment: Graduate Student Capstones

The Department of Defense's treatment of geographic information systems and cybersecurity as parallel rather than integrated policy domains produces geographically predictable vulnerability patterns across its global military installation footprint. This capstone investigates that conclusion through original spatial analysis, constructing a five-variable composite geospatial vulnerability index across the six U.S. Combatant Command regions using publicly available unclassified data. EUCOM ranked highest overall, driven by GPS/PNT spoofing density, commercial satellite coverage, and cyber incident frequency; CENTCOM ranked second, driven by OSINT exposure incidents and governance risk. The null hypothesis of random geographic distribution is rejected. Findings confirm the structural governance gap documented …

Data Governance Maturity, Ai Integration, And Equity In Colorado K-12 Public Schools, John R. Curtin

Electronic Theses and Dissertations

Colorado's 179 K-12 public school districts operate as autonomous governance units, each responsible for securing and managing student data assets that span health, financial, residential, and academic records. The accelerating integration of artificial intelligence (AI) and machine learning (ML) tools into administrative workflows, productivity software, and instructional platforms has fundamentally altered the risk landscape for student data, yet governance frameworks at the state, district, and school levels have not kept pace. This dissertation investigates whether Colorado's decentralized educational governance structure is institutionally capable of producing equitable, secure, and sustainable data governance outcomes in the AI era.

Drawing on Institutional Theory …

Flame Retardant Metabolites In Urine Samples Associated With U.S. Consumer Dietary Behaviors, Heather Marie Holliday

Walden Dissertations and Doctoral Studies

No abstract provided.

Some Results In Maximal Pattern Complexity, Casey Schlortt

Electronic Theses and Dissertations

For a finite alphabet 𝒜 and a sequence 𝑥 ∈ 𝒜^ℕ_⊬ , Kamae and Zamboni combined the ideas of block complexity and topological sequence entropy to define the maximal pattern complexity, 𝑝^∗_𝑛 (𝑥). They defined an aperiodic sequence 𝑥 over two letters as pattern Sturmian if it had the lowest possible maximal pattern complexity, 2𝑛. Later, Kamae and Rao extended their definition of pattern Sturmian sequences to be sequences over ℓ ≥ 2 letters which are not periodic by projection and have maximal pattern complexity ℓ𝑛.

This dissertation answers a question posed by Kamae and Zamboni …

Ka Here Tāngata:1 Mātauranga And Te Ao Māori In Biocultural Kākāpō (Strigops Habroptilus) Conservation Approaches, Sophie Perfetto

Electronic Theses and Dissertations

This master's thesis examines conservation as a form of living cultural heritage practice through the co-management of kākāpō (Strigops habroptilus), a critically endangered parrot and taonga species in Aotearoa New Zealand. Situated within ongoing histories of colonial dispossession and Western frameworks of land and species management, contemporary kākāpō conservation is shaped through the partnership between the Department of Conservation’s Kākāpō Recovery Programme and Ngāi Tahu. Drawing on semi-structured interviews collected during fieldwork from July to August 2025, this study examines how institutional partnerships structure decision-making, authority, and responsibility in contemporary conservation governance. Findings demonstrate that Māori knowledge systems …

Perceptions Of Giftedness: A Mixed Methods Study Of General Education Classroom Teachers And Gifted And Talented Specialists, Rachel J. Martino

Electronic Theses and Dissertations

This convergent mixed methods study examined similarities and differences in perceptions of giftedness held by general education teachers and gifted specialists in two suburban elementary school districts. Grounded in social constructivism and labeling theory, the study explored how educator role shapes understandings of giftedness and gifted education. Survey data from 70 educators and interviews with eight participants were analyzed and integrated. Findings revealed alignment regarding the multidimensional and social–emotional nature of giftedness, but statistically significant differences in perceptions were found related to instructional practices and differentiation, identification, autonomy, and service models. Findings also revealed a gap between belief and practice, …

Tracing The Flow Of Value In Ecotourism: A Case Study Of Lekki Conservation Center, Lagos, Nigeria, Queen Oluwatobi Olafadehan

Electronic Theses and Dissertations

This study examines the flow of value in ecotourism at Lekki Conservation Center (LCC) in Lagos, Nigeria, using a political ecology framework to analyze how economic benefits, participation opportunities, and environmental impacts are distributed among different community groups. Drawing on semi-structured interviews with 16 community members, participant observation, and photographic documentation, the study investigates how surrounding communities perceive and experience ecotourism, how revenue is understood to be distributed, and in what ways communities are included in or excluded from conservation decision-making. The findings reveal that ecotourism at LCC generates benefits that are unevenly distributed, that community participation in governance remains …

Design Principle For Staple-Mediated Stabilization Of Peptides And Proteins, Samantha C. Hatfield

Theses and Dissertations

Macrocyclization, or stapling, has emerged as a powerful strategy to enhance the stability and function of peptides and proteins by constraining their conformational ensembles. Stapling can improve thermodynamic stability, increase resistance to proteolytic degradation, and enhance biomolecular recognition, making it particularly valuable for the development of peptide-based therapeutics. Despite these advantages, staple design remains largely empirical, relying on iterative screening of linker chemistries, lengths, and attachment sites. This trial-and-error approach limits scalability and hinders the rational design of stabilized peptide systems. In this work, we address this challenge by integrating large-scale experimental datasets with molecular dynamic simulations to develop predictive …

Improving Cluster Expansion Efficiency And Generalizability, Samuel D. Bills

Undergraduate Honors Theses

The cluster expansion (CE) method is a powerful framework for modeling alloy systems by linking atomic configurations to thermophysical properties. However, constructing accurate and robust CE models requires careful selection of both training structures and cluster bases. In this work, we investigate how structure enumeration and cluster selection strategies influence CE performance in binary face-centered cubic alloys using a Julia-based implementation. Model performance is evaluated using empirical risk and the generalized aliasing decomposition (GAD), which provides insight into the relationship between model complexity and generalization error. We find that physically motivated selection strategies that prioritize small clusters consistently outperform approaches …

Evaluation And Distillation Of Source Code Generation Tasks By Large Language Models, Danny Brahman

Electronic Theses and Dissertations

Large Language Models (LLMs) are predominantly assessed based on their common sense reasoning, language comprehension, and logical reasoning abilities. While models trained in specialized domains like mathematics or coding have demonstrated remarkable advancements in logical reasoning, there remains a significant gap in evaluating their code generation capabilities. Existing benchmark datasets fall short in pinpointing specific strengths and weaknesses, impeding targeted enhancements in models’ reasoning abilities to synthesize code.

To bridge this gap, this thesis introduces two novel contributions: CodeEval and CodeQual. CodeEval is an innovative, pedagogical benchmarking method that mirrors the evaluation processes encountered in academic programming courses. It comprises …

The Organizational Experience Of Next Gen Learning Through Portrait Of A Graduate, Kathleen J. Campbell

Electronic Theses and Dissertations

This qualitative single-case study investigates the organizational journey of navigating the complexities of systemic transformation. In 2021, Silver Peak School District (SPSD; a pseudonym), a rural educational organization in the western United States, implemented a graduate competency framework known as Portrait of a Graduate. This study analyzed the experiences of teachers, instructional coaches, and principals with the explicit Portrait policies, practices, and resource flows of five learning structures—graduate competencies (in SPSD, this is analogous to Portrait), deeper learning, agency, performance assessment, and teaching culture—in a district in the messy middle of Portrait adoption. By focusing on a district situated in …

Projected Climate Change Impacts On Soil Greenhouse Gas Emissions From A Restored Freshwater Marsh, Annika Hendrickson

University Honors Theses

Wetlands provide valuable ecosystem services, one of which is a wetlands ability to sequester carbon. Climate change and human land use threaten a wetlands ability to do so. Globally, 21% of wetlands have been lost since the 1700s. As a result, restoration of wetlands has been increasing. However, wetlands in the process of restoration emit more methane than degraded ones, and as the climate continues to change, these fluxes could respond. Projected sea level rise is expected to cause salt water to infiltrate coastal freshwater systems, increasing the salinity. Past research has found that increased salinity has led to suppressed …

Beyond The Best Fit: Fitting Sir-Style Models To Data While Prioritizing Biological Meaning, Meredith L. Greer

CODEE Journal

Many students find comfort in mathematics because math classes have been a place where they can find the “right answer” to exercises. Modeling courses typically emphasize more nuance, teaching students to try modeling approaches, compare back with real-world mechanisms and data, and then refine their models, in an ongoing cycle. One topic, however, can cause students to quickly revert into “right answer” mode: fitting a model to data. Phrases such as best fit and minimize the distance suggest there is one optimal solution that can be determined by an algorithm, and these algorithms typically have no relationship to the biology …

A Case Study Of Principal Preparation In A Social Justice-Informed Principal Preparation Program, Katie Golieb

Electronic Theses and Dissertations

This qualitative case study examined how a social justice-informed principal preparation program fostered the development of socially just school leaders and how graduates perceived their capacity for resilience as educational leaders in the contemporary PK–12 context. The Mountain Range Principal Preparation Program (MRP3), a university–district partnership designed to prepare educational leaders to be transformative leaders equipped to improve student achievement and address challenges in low-performing schools, served as the site of inquiry. The study explored how principals made meaning of their preparation experiences and how those experiences shaped their enactment of equity-focused leadership and their ability to sustain such work. …

A Computational Micropatterning Approach To Study Caveolae And Protein Localization In Vascular Biology, Andrew B. Grespin

Electronic Theses and Dissertations

Caveolae are specialized, flask-shaped membrane invaginations highly expressed in endothelium and dysregulated in atherosclerosis. Caveolae play a central role in buffering membrane tension, yet the principles governing their spatial organization remain elusive. Thus, we sought to generate the most comprehensive and systematic analysis of blood vessel caveolar spatial organization. However, cell culturing, the backbone of human-focused biological research, does not standardly do well to model physiologically relevant cell behaviors such as migration or polarity-based tissue formation, particularly for punctate proteins and structures like caveolae. Micropatterns are cell-adhesive shapes that biophysically confine cell(s) to a user defined geometry which stereotype organelle …

Higher Education Institutions In U.S. Blockchain Innovation Governance Documents, Clarissa Terracciano

Electronic Theses and Dissertations

Blockchain technologies have attracted growing attention as an evolution of digital recordkeeping, prompting interest in higher education governance, credentialing, and data management. Yet, no systematic analysis exists on how U.S. government blockchain documents define institutional roles and governance authority within higher education institutions. As the national blockchain innovation system expands through governance infrastructure, the inclusion of higher education institutions as governing actors is imperative for coherent and equitable deployment. This qualitative study examines what roles the U.S. government blockchain documents assign to higher education institutions within the national blockchain innovation system.

Using innovation systems theory, particularly the triple-helix model of …

Re: Approval Letter For The Quarterly Operations And Maintenance Report Grove Gulch Sedimentation Bay For First Quarter 2026 Silver Bow Creek/Bute Area Npl Site – Butte Priority Soils Operable Unit Consent Decree-Civil Action No. Cv 89-039-Bu-She (Dated May 15, 2026)., Emma Rott

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Comment Letter For The Revised Draft Final Butte Priority Soils Operable Unit (Bpsou) Butte Treatment Lagoon (Btl) System Annual Report – 2025 (Dated May 11, 2026), Emma Rott

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Exploring Engineering Technology: A Multi-Year, Multidisciplinary Project-Based Engineering Technology Workshop, Benito Mendoza, Angran Xiao, Muhammad Ummy

Publications and Research

Many students enter engineering technology programs with a limited understanding of disciplinary differences, curricular expectations, and career pathways, contributing to early dissatisfaction and attrition. To address this challenge, we developed Exploring Engineering Technology, a multidisciplinary, project-based workshop that introduces students to Mechanical, Electrical, and Computer Engineering Technology through a shared robotic systems project. This paper presents a multi-year design-based educational research (DBER) study documenting the iterative refinement and sustained implementation of the workshop across three consecutive summers (2023–2025) at a large urban public college. Using a consistent post-workshop survey administered across cohorts and aggregate student progression indicators, we examine …

Encountering The Blue Economy Through Event Ethnography: A Methodological Reflection On The Geographies Of Policymaking, Carlo Ceglia

School of Engineering, Computing and Mathematics

This article offers a methodological reflection on adopting a particular type of ethnography—event ethnography—to engage with the production and circulation of policy realities. Responding to recent geographical calls asking us to critically investigate the Blue Economy (BE)—a recent policy paradigm supposedly ensuring economic development, social well-being, and environmental sustainability—I detail my choice of event ethnography as the primary methodological choice informing my encounter with one such paradigm in the archipelagic state of the Republic of Seychelles. In doing so, this article expands on current qualitative methodological approaches for the study of the BE by foregrounding the potentialities of event ethnography …

Voice And Choice: Exploring The Role Of Student Agency In High School Math Course Placement, Anne Patia Carpenter Sterry

Electronic Theses and Dissertations

This study examined how students make sense of the mathematics placement process within a high-rigor independent school. In contexts where placement decisions shape access to advanced coursework, students’ interpretations of these decisions may influence both their academic trajectories and their developing mathematical identities. The purpose of this qualitative bounded case study was to understand the experiences of students who enrolled in mathematics courses that differed from placement recommendations, focusing on their motivations for self-selection, their interpretations of feedback from adults and peers, and how these experiences shaped their mathematical identities.

Data were collected through semi-structured interviews with 10 high school …

Artificial Intelligence In Biomedical Scientific Publishing, Tomasz J Guzik, Victor Aboyans, Stefan Agewall, Steven Bailey, Adrian Baranchuk, Magnus Bäck, Michael Böhm, Robert O Bonow, George W Booz, Giuseppe Boriani, Biykem Bozkurt, Nico Bruining, Davide Capodanno, Çetin Erol, Péter Ferdinandy, Alessia Gimelli, Gerd Heusch, Thomas Kahan, Chim Choy Lang, Gerald Maurer, Robert J Mentz, Marco Metra, Philip Moons, Daniel Piskorz, Massimo Piepoli, Piotr Ponikowski, Alexandra Popma, Bianca Rocca, Juan Sanchis Fores, Philipp Sommer, Rhian M Touyz, Zoltan Ungvari, Pascal Vranckx, Joseph A Hill, Thomas F Lüscher, Filippo Crea

Faculty, Staff and Students Publications

Artificial intelligence is now embedded across the scientific research and publishing ecosystem, influencing discovery, analysis, knowledge translation, authorship, peer review, and editorial workflows. In cardiovascular and biomedical sciences, these developments offer substantial opportunities to accelerate knowledge generation, integrate complex datasets, and improve efficiency and consistency. At the same time, they introduce new risks related to bias, transparency, data integrity, and authorship responsibility, potentially endangering trust in the scientific record. This commentary examines the evolving role of AI in biomedical publishing, with particular attention to generative models and machine learning tools. We review both benefits and limitations, highlight risks such as …

Medical Image Integrity Protection Through U-Net Based Roi Segmentation And Hybrid Integer Wavelet–Quadtree Embedding, Muna M. Jawad, Rasha F. Nadhim, Noor A. Yousif, Ashwaq T. Hashim

Journal of Intelligent Informatics, Networking, and Cybersecurity

For decades, secure techniques in medical images have focused on securing the sensitive information through limiting direct access to the images themselves. Nonetheless, these methods tend to cause distortion on the images that can affect the diagnostic value and cause loss of crucial information. There arises the fundamental problem of secure embedding of medical data in such a way that does not affect the diagnostic integrity of the image. To overcome this limitation, a secure yet hidden data-hiding mechanism is introduced that is exploited U-Net-based deep learning for accurate Region of Interest (ROI) segmentation. Therefore U-Net architecture is used for …