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Contagion Chronicles: A Spatiotemporal Analysis Of Armed Conflict And Infectious Disease, Devyn Escalanti

Graduate Thesis and Dissertation post-2024

This dissertation examines the relationship between armed conflict and infectious disease transmission through a novel theoretical framework that integrates ecological disturbance and health systems resilience theories into epidemiological contexts. The framework conceptualizes diseases along a continuum from "pulse" to "press." Pulse diseases, like Ebola, are characterized by sudden onset, high mortality, and short-term outbreaks. Press diseases, like HIV, progress gradually with lower mortality and long-term persistence. Grounded in this pulse–press disease typology and ecological and health systems resilience, the theory suggests that the absorptive capacity, adaptive capacity, and resilience of community health workers in conflict areas can influence disease transmission, …

Shock Tube Investigation And Chemical Kinetic Modeling Of Green Propellants For Space Missions, Marley Albright

Graduate Thesis and Dissertation post-2024

Hydrazine thrusters have been used for decades to land spacecraft on other planets. While its use is common, handling hydrazine is difficult due to its toxicity; this poses a risk to humans during testing and loading the propellant onto a spacecraft. Occupational Safety and Health Administration has limited human exposure to 1 part per million (ppm) of hydrazine per eight-hour workday. Green propellants are promising alternatives because they have lower toxicity but do not sacrifice performance. Green propellant technology has been demonstrated in space and future missions are planned, such as NASA’s Green-Propulson Dual-Mode technology demonstration. At the University of …

Authorship Attribution Of Ai-Generated Codes, Soohyeon Choi

Graduate Thesis and Dissertation post-2024

The field of code authorship attribution focuses on identifying the author(s) of source code written in a specific programming language. Various methods, including manual crafting, automated crafting, and deep learning-generated features, have been developed for this task. These techniques leverage the unique stylistic patterns inherent in code, such as structure, comments, variable names, and function names, to attribute authorship accurately. This field has practical applications in software forensics, cybersecurity, and code plagiarism detection, enabling investigations into issues like piracy, intellectual property violations, and malware attribution. In educational settings, it helps detect plagiarism in programming assignments. However, traditional methods face challenges …

Assessing Driving Performance And Safety In Managed Lanes: A Human Factors Study On The Effects Of Buffer Separation Treatments With Delineators, Sharfuddin Ahmed

Graduate Thesis and Dissertation post-2024

Buffer separation with delineators is one of the commonly used separation treatments across US highways to distinguish managed lanes (ML) from general purpose lanes (GPLs). As MLs continue to be integrated into US highway system for improving traffic flow and reducing congestion, this separation method has become more popular due to its flexibility and cost efficiency over more robust physical separations. While past studies have explored the effectiveness and safety of buffer separations with delineators compared to other treatments, none have examined how specific changes within the buffer design—like separation width and delineator height—impact driver behavior. It is particularly important …

Practical Applications For Biomechanical Modeling Methods, Joseph M. Dranetz

Graduate Thesis and Dissertation post-2024

Models are tools humans use to understand and assess the world around them. The field of biomechanics is one well suited to modeling pursuits. Physiological systems are complex, and modeling may serve as an appropriate method in understanding them. Recently, technologies enabling the collection of biomechanical data have improved greatly and continue to expand. This dissertation serves as an anthology of various attempts to collect and interpret biomechanical data with modeling.

The first study: Electromyographic, ultrasound, and knee torque data was collected from both legs of an individual with a unilateral transtibial amputation. These data were used to generate a …

Integration Of System Dynamics And Agent-Based Simulation To Emulate Cyberattacks In An Iot-Based Smart Grid, Francisco Valdez

Graduate Thesis and Dissertation post-2024

The electric power grid is a cyber-physical system (CPS) that plays a fundamental role in modern society. With the integration of renewable energy sources and advanced communication technologies, Smart Grids (SGs) can enhance both the profitability and reliability of the electric power system. The communication network that interconnects numerous remotely distributed generators, devices, and controllers plays a vital role in grid control, and current trends favor the widespread adoption of Internet of Things (IoT) devices. However, this network is inherently vulnerable to cyberattacks. This dissertation presents a hybrid methodology to model and analyze the dynamic behavior of an electrical Smart …

Critical State-Based Study On Deformations Due To Construction Activities And Blast Densification, Jorge Enrique Orozco-Herrera

Graduate Thesis and Dissertation post-2024

The behavior of geo-structures and foundation systems in densely populated urban areas relies on the successful performance of the supporting soils when subjected to static (e.g., the weight of the structure or service loads) or dynamic (e.g., earthquake-induced ground motions, construction-induced vibrations, wind loads, or traffic) loading scenarios. Construction-related activities and ground improvement operations can also be responsible to alter the stress-strain-strength behavior of supporting soils by causing vibration-induced ground deformations, excessive vibrations, or mobilizing soil shear strength in relation to in situ or as-built conditions. Construction-related activities and ground improvement operations such as blast densification trigger complex dynamic input …

Exploring The Experience Of Heart Disease Among Burmese Immigrants In The United States, Khup S. It

Graduate Thesis and Dissertation post-2024

The ongoing political and military turmoil in Myanmar has resulted in a significant increase in the migration of Burmese individuals to the United States in recent years. This demographic shift has brought attention to the health challenges faced by Burmese immigrants, particularly with regard to heart disease (heart attack). The complexities of the U.S. healthcare system, compounded by legal and social barriers, place immigrants at greater risk for health disparities. This study examines the health challenges of Burmese immigrants in Tulsa, Oklahoma, with a specific focus on their perceptions and experiences related to heart disease, as explored through illness narratives. …

Shock Tube Droplet Breakup Experiments Facilitated By Acoustic Levitation, Anthony J. Aguilera

Graduate Thesis and Dissertation post-2024

Droplet introduction methodology in a shock tube differs based on the experimental conditions. For experiments in which the objective is to image droplet breakup, acoustic levitation allows for a consistent droplet shape and for diagnostic equipment to be aligned to a droplet prior to an experiment. A levitator was designed and used in the University of Central Florida’s shock tube facility. Polystyrene doped droplets were levitated to increase the likelihood of cavitation occurring. Multiple droplets were impacted by a shock wave, and the breakup regime was captured using a high-speed camera.

Paleoethnobotany And Starch Grain Residue Analysis Collected From Ceramics At The White Marl Site, Jamaica, Lydia E. Kiernicki

Graduate Thesis and Dissertation post-2024

The White Marl site represents the largest known Taíno settlement and archaeological site in Jamaica. Road construction in the eighteenth century first disturbed the site, followed by further damage during Mandela Highway construction in the 1940s. The site now faces renewed threats from a proposed highway expansion that has divided it into two zones. In response, the Jamaica National Heritage Trust began archaeological investigations in 2016 to assess and document the land before development and preserve any recoverable material remains and cultural heritage. Field seasons from 2016 to 2019 recovered of several ceramic burial vessels from inhumation contexts, providing valuable …

Addressing Vulnerabilities And Defesne Mechanisms In Transformer-Based Language Models, Mansour Al Ghanim

Graduate Thesis and Dissertation post-2024

Transformer-based Large Language Models (LLMs) have achieved remarkable success across Natural Language Processing (NLP) tasks, yet their increasing adoption has exposed critical vulnerabilities across input, model, and output layers. This dissertation systematically investigates these vulnerabilities and develops corresponding defenses, offering an end-to-end view of LLM security. First, we study model-level vulnerabilities through backdoor injection attacks that implant hidden malicious behaviors via hardware perturbations. We propose TrojBits, a hardware-aware attack that uses minimal bit-flips to insert trojans into models. Its three-stage design—Vulnerable Parameter Ranking, Hardware-Aware Attack Optimization, and Vulnerable Bit Pruning—success- fully compromises BERT and XLNet using only 64 parameters and …

Analysis Of An Aero-Engine Using Ammonia As A Fuel Carrier, Kangana Patel

Graduate Thesis and Dissertation post-2024

Numerous studies in the literature have explored the decarbonization of aviation. Some opt for sustainable aviation fuels (SAF), while others propose Hydrogen(H₂). Recent studies have also investigated Ammonia (NH₃) as a potential hydrogen fuel carrier. This study of NH₃ as a viable alternative fuel could help reduce overall emissions and overcome the challenges of H_2, which is highly flammable and difficult to store. This study aims to develop a core-engine model in a system simulation software called Simcenter Amesim. Results show a reasonable similarity between jet-A fuel and NH₃ cracked H₂ within …

Large Language Models And Networks: Edge Proposal, Synthetic Corpora, And Adaptive Node Generation, Nathan Gonzalez

Graduate Thesis and Dissertation post-2024

Natural Language Processing (NLP) and Artificial Intelligence (AI) have evolved from brittle rule-based engines through data-driven statistical models to today’s transformer architectures whose multi-head attention enables rich contextual reasoning. Against this backdrop, this dissertation unifies three complementary investigations that deepen our understanding of how large language models (LLMs) can reason over, generate, and strategically adapt language within networked settings. First, instruction-tuned LLMs are recast as latent-relationship detectors: by prompting models to hypothesize links between text-described entities, we recover edge sets that reconstruct social, thematic, and citation graphs with high precision, revealing how attention distributions encode topological cues. Recognizing the difficulty …

Advanced Large Language Model Approaches And Natural Language Processing Techniques To Improve Hate Speech Detection Using Ai, Saad Almohaimeed

Graduate Thesis and Dissertation post-2024

The proliferation of hate speech on social networks can create a significant negative social effect, making the development of AI-based classifiers that can identify and characterize different types of hateful speech in messages highly important for stakeholders. While this is a highly challenging problem, recent advances in language models promise to advance the state of the art such that even subtle and indirect forms of hate speech can be detected.

In this dissertation we present a series of contributions that improve different aspects of hate speech classification. We developed THOS, a hate speech dataset consisting of 8.3k tweets. Compared to …

Integrated Performance-Based Framework For Evaluating Alternative Containment Systems In Subtitle D Landfills Managing Coal Combustion Products, Poyu Zhang

Graduate Thesis and Dissertation post-2024

Designing landfill containment systems that remain effective over decades to centuries poses significant challenges in geoenvironmental engineering, especially for landfills managing coal combustion products (CCPs) with complex hydraulic and chemical behaviors. This dissertation aims to develop an integrated, performance-based framework for evaluating landfill barrier systems by combining numerical modeling, experimental leaching tests, and machine learning prediction. The first component assesses the equivalency of the Florida double liner system relative to the Subtitle D composite liner mandated by the U.S. Environmental Protection Agency (US EPA). Using field leakage observations and COMSOL Multiphysics-based numerical simulations, results demonstrate that the Florida system, when …

Aluminum Alloys For Laser Powder Bed Fusion Additive Manufacturing And Process Optimization By Machine Learning, Kevin Graydon

Graduate Thesis and Dissertation post-2024

Laser powder bed fusion (LPBF) additive manufacturing is a promising manufacturing technology enabling enhanced design freedom through layer-by-layer production. However, traditional, wrought aluminum (Al) alloys suffer from solidification cracking during LPBF processing and the initial printer parameter optimization process required for every novel or untested material is time and resource intensive. There exists a need to formulate Al alloys for LPBF and a method to reduce the resources consumed during initial printer parameter optimization studies. Al-9.5Ce-xMo (x = 0.2, 0.6, 1.0 wt. %) alloys have been designed specifically for LPBF utilizing the CALPHAD approach. Additionally, a neural network model was …

Dordt University 2025-26 Catalog, Dordt University. Registrar's Office

Academic Catalogs

Academic Catalog for 2025-26

Discontinuing Glucagon-Like Peptide-1 Receptor Agonists And Body Habitus: A Systematic Review And Meta-Analysis, Sara Berg, Hannah Stickle, Suzanne J. Rose, Eric C. Nemec

Physician Associate Studies Faculty Publications

Research on Glucagon-like peptide 1 receptor agonist (GLP-1RA) has mainly focused on the efficacy of weight loss and not the long-term efficacy of weight loss maintenance. This systematic review and meta-analysis aims to evaluate the sustainability of weight loss of patients taking GLP-1RAs following the discontinuation of the drug. EBSCOhost was used to simultaneously search Academic Search Premier, CINHAL Ultimate, Cochrane Central Register of Controlled Trials, MEDLINE with full text, Cochrane Database of Systematic Reviews, and separate PubMed search was systematically investigated using a predetermined search strategy from inception to February 1st, 2024. The authors extracted data regarding body weight …

Meta-Narrative Review Of Cancer Of Unknown Primary Patient Outcomes In Response To Advanced Molecular Technique Driven Diagnostics And Treatment Modalities, David A. Figueroa, Ariana D. Harding, Vanessa Mendoza, Adam K. Walston, Mary I. Coolbaugh-Murphy, Denise M. Juroske, Brandon C. Greer

Research Methods Poster Session 2025

No abstract provided.

Under New Management?: Sovereign Wealth Funds And Their Ownership Of U.S. Sports Teams, Benjamin K. Moyer

Dickinson Law Review (2017-Present)

In October 2021, Saudi Arabia’s sovereign wealth fund (“SWF”) successfully purchased the English Premier League soccer team Newcastle United F.C. for $400 million. With this transaction, Saudi Arabia joined fellow Gulf countries, Qatar and the United Arab Emirates, in owning a major European soccer team through one of its state’s SWF. States have long used their SWFs to invest in foreign markets, but recent trends have transformed these originally strictly financial vehicles into political tools. Since the 2007–2008 financial crisis, many states have used their SWFs not only to produce financial gains but also to generate soft power through political …

Front Cover, The Delaware Ornithological Society

Delaware Ornithologist

No abstract provided.

President's Corner, Joe Francis

Delaware Ornithologist

No abstract provided.

A Delaware Bay Field Season; Shorebirds And Scientists, Sally O'Byrne

Delaware Ornithologist

No abstract provided.

Waiting For Waders, Sally O'Byrne

Delaware Ornithologist

No abstract provided.

Ashland Hawk Watch - 2024 Season Report, David Brown, Joe Sebastiani, Ian Stewart

Delaware Ornithologist

The Ashland Hawk Watch is a joint project between the Delaware Nature Society (DNS), the Delaware Ornithological Society (DOS), and the Delaware Department of Natural Resources and Environmental Control (DNREC). This project was funded, in full or part, through a grant from the Delaware Division of Fish and Wildlife with funding from the Division of Federal Aid, United States Fish and Wildlife Service under the State Wildlife Grants Program. DNS manages the Hawk Watch Coordinator and volunteer counters and provides housing and office accommodations for the coordinator. The hawk watch is conducted from Hawk Watch Hill at the DNS headquarters, …

Delaware Bird Records Committee 2025 Annual Report, Bruce Peterjohn

Delaware Ornithologist

No abstract provided.

The Buteos Of Delaware: Current Status And Recent Changes In Abundance, Ian Stewart

Delaware Ornithologist

No abstract provided.

Pacific Golden-Plover At Prime Hook National Wildlife Refuge, Bruce Peterjohn

Delaware Ornithologist

No abstract provided.

Common Ravens Nesting In New Castle County, Delaware, Megan Kasperzak

Delaware Ornithologist

No abstract provided.

Identification Of The May 2022 Golden-Plover In Kent County, Delaware, Bruce Peterjohn

Delaware Ornithologist

No abstract provided.