Digital Commons Network^™

Transformer-Based Methods For Starcraft Macromanagement And Multi-Agent Reinforcement Learning, Muhammad Junaid Khan

Graduate Thesis and Dissertation post-2024

Transformers have emerged as the driving force behind innovative advancements in artificial intel- ligence (AI), particularly in the domain of generative AI. Originally designed for natural language processing, transformers have since demonstrated remarkable versatility across various domains, including computer vision and reinforcement learning. This dissertation investigates the application of transformer-based models to decision-making in the real-time strategy game, StarCraft II. StarCraft II (SC2) serves as an ideal platform for developing and testing AI agents due to its complexity and strategic depth. SC2 requires players not only to fight skirmishes (micromanagement) but also to build an army and construct fortifications (macromanagement). …

Strengthening The Cyber-Physical Resilience Of Active Distribution Systems, Xue Gao

Graduate Thesis and Dissertation post-2024

Inverter-based Distributed Energy Resources (DERs) have experienced a significant rise in popularity due to their distinct advantages, such as improved power quality, advanced functionalities, and rapid response capabilities. These attributes make them particularly well-suited for modern power systems, where the growing demand for efficiency, flexibility, and reliability is crucial. As a result, the integration of inverter-based DERs into distribution networks has been steadily increasing, as they play a critical role in enhancing system performance and meeting the evolving requirements of contemporary power infrastructures.

However, the integration of inverter-based DERs presents several challenges that must be addressed for effective implementation. One …

Gait Entrainment & Energetics Of Young Adults To Discrete Mediolateral Perturbations, Lindsey D. Lee

Graduate Thesis and Dissertation post-2024

Entrainment is a natural phenomenon that occurs with synchronization to a rhythmic stimulus which can be auditory, visual, or mechanical. An everyday example is walking next to someone and synchronizing your steps. Previous studies have explored entrainment from auditory cues, such as a metronome, and mechanical cues, such as an exoskeleton applying a force at the ankle. These studies have found entrainment is more likely to occur if the stimulation frequency is close to the person’s natural locomotion frequency. Previously we found when discrete mediolateral perturbations were applied on a treadmill, participants increased their speed and retained this increased speed …

Using Lidar Data And Gis Analyses To Understand Looting Patterns In The Maya Biosphere Reserve, Chloe E. Sherwood

Graduate Thesis and Dissertation post-2024

This research examines looting activity at archaeological sites in the Maya Biosphere Reserve in Petén, Guatemala, focusing on areas both inside and outside established national park boundaries. The study covers sites occupied by the ancestral Maya from the Middle Preclassic to Terminal Classic periods (800 BC – AD 900), including El Mirador, Nakbé, and Wakná. This research uses LiDAR data and GIS analyses to identify looting clusters, comparing areas within the park to those outside, and investigates the relationship between looting activity and infrastructure such as trails, camps, and fresh water reservoirs.

Findings reveal that looting is more concentrated outside …

Quantifying Age And Growth Rates Of Gray Snapper (Lutjanus Griseus) In Mosquito Lagoon, Florida, Wei Chen

Graduate Thesis and Dissertation post-2024

Gray snapper (Lutjanus griseus) is a common reef fish inhabiting the western Atlantic Ocean. In estuaries of the Southeastern United States, such as Mosquito Lagoon, Florida, oyster reefs, seagrass, and mangrove shorelines are vital nurseries, also known as essential fish habitat (EFH), for juvenile fish. However, EFH in Mosquito Lagoon has declined from historic levels due to human activity. To mitigate these losses, oyster reef and living shoreline restoration projects have occurred to putatively increase the availability of EFH. For gray snapper in Mosquito Lagoon, past studies have assessed local habitat preferences and trophic structure, but the biotic …

The Influence Of Natural And Anthropogenic Drivers On Estuarine Food Webs At Various Spatio-Temporal Scales And Levels Of Complexity, Michelle Shaffer

Graduate Thesis and Dissertation post-2024

Global coastal ecosystems support human life by providing critical services like food, water purification, and coastal protection, yet these ecosystems are among the most threatened due to natural and human-driven disturbances. The long-term maintenance and restoration of these ecosystems is a complex challenge for resource managers due to the wide range of factors affecting these ecosystems ecological condition over long timespans. Most studies in marine ecology evaluate ecosystem change over relatively short temporal scales (ago), often resulting in shifting baseline syndrome. To effectively manage and restore these ecosystems, resource managers must consider long-term ecosystem baselines.

The Indian River Lagoon (IRL) …

On Immunogenomic Evolution And Disease In Marine Turtles, Katherine R. Martin

Graduate Thesis and Dissertation post-2024

Characterizing immune gene diversity and function is paramount to understanding population adaptive potential and species survival in the face of selective pressure from infectious disease. In this dissertation, I examined immune gene evolution and function using sea turtles to better understand the selective forces shaping reptile immunogenomic diversity. I focused on four species from the northwest Atlantic and Gulf of Mexico: loggerheads (Caretta caretta), green turtles (Chelonia mydas), leatherbacks (Dermochelys coriacea), and Kemp’s ridley sea turtles (Lepidochelys kempii). In Chapter 2, I characterized MHC class I (MHCI) evolution and diversity in Ca. caretta …

Past And Present Communities Of Pottery Practice In Guatemala, Karla J. Cardona

Graduate Thesis and Dissertation post-2024

This research aims to identify pottery technological traits and attributes that suggest the presence of communities of pottery practice in archaeological contexts. Through the combination of ethnoarchaeological approach and archaeological ceramic analysis of vessels produced in present communities, we can identify communities of pottery practice in the past. The data obtained using diverse ethnographic methods and multiple archaeological analyses are relevant to archaeologists, as they allow the study of the organization of production in the absence of manufacturing contexts within the archaeological record. At the same time, as contemporary pottery-making practice is becoming scarcer in Guatemala it is relevant to …

Quantify Human Impacts And Climate Control On Hydrology Using Integrated Hydrologic Model, Yu Zhang

Graduate Thesis and Dissertation 2023-2024

The main objective of this dissertation was to investigate the impacts of human activities and climate control on hydrologic responses using the Integrated Hydrologic Model (IHM), which dynamically couples HSPF and MODFLOW. The study first evaluated the impacts of land use change and rainfall variability on hydrologic responses—such as streamflow, evapotranspiration (ET), groundwater ET, recharge, and groundwater heads—in the Anclote River basin (ARB), Florida. The results provided insights into the uncertainties in hydrologic responses due to rainfall variability. Secondly, hydrologic response flux changes were partitioned into anthropogenic causes, including groundwater pumping, irrigation, and land use change, by the IHM in …

Demystifying The Hosting Infrastructure Of The Free Content Web: A Security Perspective, Mohammed Alqadhi

Graduate Thesis and Dissertation 2023-2024

This dissertation delves into the security of free content websites, a crucial internet component that presents significant security challenges due to their susceptibility to exploitation by malicious actors. While prior research has highlighted the security disparities between free and premium content websites, it has not delved into the underlying causes. This study aims to address this gap by examining the security infrastructure of free content websites. The research commences with an analysis of the content management systems (CMSs) employed by these websites and their role. Data from 1,562 websites encompassing free and premium categories is collected to identify CMS usage …

Analysis And Design Of Multiport Converters For Photovoltaic And Electrical Vehicle Applications, Reza Rezaii

Graduate Thesis and Dissertation 2023-2024

The widespread adoption of photovoltaic (PV) and electric vehicle (EV) technologies is crucial for mitigating greenhouse gas emissions. A Multi-Port Converter (MPC) connects multiple PV panels, improving efficiency and reducing costs. In EVs, MPCs extend battery lifespan by adding energy sources, enhancing system quality beyond reliance on Li-ion batteries. This dissertation proposes a Quad-input LLC topology for PV microinverters. It utilizes a single LLC resonant tank and two Y switches configurations. An MPPT control strategy based on Perturb and Observe (P&O) method ensures independent MPPT for each panel. The zero-voltage switching (ZVS) is achieved across all switches for wide input …

Supply Chain Security: Assessing Confidence In Food Defense Compliance As A Function Of Management Systems 4.0 Deployment In Truck Transportation, Celso Alvarado

Graduate Thesis and Dissertation post-2024

The secure transportation of food via trucks within the supply chain is a pivotal aspect of ensuring food safety and defense, necessitating the seamless integration of advanced security control processes and systems. This study primarily investigates how the integrated use of Industry 4.0 (4IR) technologies, such as AI, IoT, and Blockchain, alongside ISO standards like ISO 28001 and ISO 22000, in trucking management systems for food transport influences the confidence of supply chain professionals in ensuring that food products remain safe and untampered with during truck transportation.

To ensure the robustness of our survey, a two-round Delphi study involving 10 …

Exploiting Dynamic Magnetic Fields For New Magnetorheological Fluid Damping Capability, Christian Vazquez

Graduate Thesis and Dissertation 2023-2024

The constituent parts of a magnetorheological (MR) sandwich beam combine to create a powerful damping device. The apparent viscosity of an MR fluid can change with the application of an adjacent magnetic field. Typically, this apparent viscosity rises as the field gets stronger. The resulting resistance to motion makes MR fluids a great choice for damping applications. The sandwich beam is a composite structure with two elastic outer layers and a damping material in between that forms the core layer. Using MR fluid as the damping agent produces good and tunable damping performance while possessing the benefits of a sandwich …

Nonlinear Dynamical Characteristics Of Electroencephalogram Signatures In Patients With Multiple Sclerosis, Christopher I. Hernandez

Graduate Thesis and Dissertation post-2024

The application of nonlinear analysis in studying electroencephalography (EEG) signals has been increasingly applied to patients with neurological disorders, such as multiple sclerosis (MS). Various nonlinear analysis methods have been employed to investigate MS, offering unique insights into understanding, diagnosing, and treating the condition. This study utilized two nonlinear analyses, sample entropy (SampEn) and Higuchi’s fractal dimension (HFD), to explore the effects of Interferon-β (IFN-β) and dimethyl fumarate (DMF) on patients with MS. Data were collected from 175 participants at Jagiellonian University in Krakow, Poland, across three groups: IFN-β (n = 39), DMF (n = 53), and healthy controls (n …

Effects Of Premixing On Emissions And Flame Stabilization For A High-Pressure Reacting Jet In Crossflow, Penelope Torres Serrano

Graduate Thesis and Dissertation post-2024

The effects of fuel premixing on the emissions and flame stabilization characteristics of a high-pressure, axially staged combustion system are experimentally examined. The experimental facility is split into two major components. The main stage provides a high-pressure, high-temperature crossflow that is consistent for all test conditions, and the axial stage provides the reacting jet-in-crossflow, where the flame temperature is varied by equivalence ratio sweep. Methane is injected through the axial stage into a high-speed vitiated crossflow under varying conditions, ranging premixing states, for various equivalence ratios. Experimentally, it is observed that NOx emissions increase with equivalence ratio and decrease under …

Design And Development Of A Real-Time Autonomous Uav Swarm Control System, Berk Cetinsaya

Graduate Thesis and Dissertation post-2024

This dissertation focuses on advancing control systems and path planning techniques for Unmanned Aerial Vehicles (UAVs), particularly in drone swarm operations and real-time digital twin (DT) integration. The research addresses key challenges in scalability, real-time responsiveness, and system adaptability to improve the efficiency and situational awareness of UAV systems. A comprehensive review of existing methods highlights the importance of swarm intelligence and nature-inspired algorithms. The study introduces a real-time DT that integrates multiple drone video feeds into a unified 3D environment. Additionally, the Camera-based Adaptive Line Formation and Dynamic Leader-Following Optimization (CALF-DLFO) strategy enhances drone swarm coverage and reduces update …

Hydrogen Cryo-Adsorption In Silica Aerogel: Analytical Model Of Adsorption In Porous Media And Experimental Validation, Adil Riahi

Graduate Thesis and Dissertation post-2024

Hydrogen has incontestably gained attention as one of the best alternative energy sources to fossil fuels due to its volatility, abundance and eco-friendly attributes. The classical methods for hydrogen storage in its gaseous or liquid forms such as high-pressure tanks or cryogenic temperatures display several challenges. Hence, the need to come up with innovative methods to store and transport it is imminent. Comparative studies have demonstrated that material-based hydrogen storage has proven promising in enhancing energy efficiency. However, material selectivity is the missing part of the puzzle to achieve optimal hydrogen storage performance. This dissertation introduces a novel material for …

High-Performance, Energy-Efficient, And Scalable Accelerator Design For Emerging Machine Learning Applications, Lingxiang Yin

Graduate Thesis and Dissertation post-2024

The use of machine learning (ML) is pervasive in numerous application domains, such as autonomous driving, scientific computing, robotics, and among others. However, the continuous growth of ML model complexity and data size is posing unprecedented computation and communication demands on current computing systems, especially in the era of large language models. The problem is further compounded by unstructured data and technology limitations.

To address these challenges, this dissertation research explores novel accelerator designs tailored for a wide range of machine learning applications. First, this research investigates a flexible communication fabric that can enable efficient training for deep learning applications …

Ritual Change And Sociopolitical Transformations At The Maya Center Of Pacbitun, Belize: Intra-Polity Interactions Between Epicenter And Periphery, George J. Micheletti

Graduate Thesis and Dissertation post-2024

This dissertation examines how peripheral communities at the ancient Maya site of Pacbitun, Belize, exercise agency through their ritual practices from the Middle Preclassic to the Late Classic periods. By focusing on public, semi-public, and private/domestic contexts, this study investigates how these peripheral households engaged with, maintained, or diverged from the elite ideologies emerging in the epicenter. Through a diachronic analysis of architecture and ritual deposits, particularly burials, this research traces the evolving interactions between the periphery and the epicenter across five major sociopolitical transformations. Fieldwork involved targeted excavations at select peripheral households and public ceremonial groups, supplemented by ceramic …

Enhancing Digital Reading Experiences For Older Adults: Investigating The Impact Of Font Selection And Hyperlinks In Newspaper Articles On Reading Speed, Comprehension, Engagement, Reading Pleasure, And Fatigue, Shalah Thomas

Graduate Thesis and Dissertation post-2024

This study explores the impact of font selection, hyperlink presence, memory retention, and visual acuity on digital reading experiences for older adults. Initially designed to evaluate the effects of font types and hyperlinks on reading outcomes, the study adapted its approach after participants indicated a strong dislike for hyperlinks and largely avoided using them. Using a multiple linear regression analysis, this research examines how font choices, memory, and visual acuity influence reading speed, comprehension, engagement, pleasure, and fatigue. Variance Inflation Factor (VIF) analysis was employed to address multicollinearity. Results indicate that familiar fonts, strong memory retention, and good visual acuity …

Shifting Educational Paradigms: An Analysis Of Evolving Student Expectations Within A Reformed Physical Chemistry Curriculum, Kevin E. Morales

Undergraduate Scholarship and Creative Works

Students often hold negative expectations when enrolling in rigorous undergraduate courses. PhysicalChemistry is a challenging upper-level course for Chemistry majors; the course has a reputation as a demandingcourse that leads to students building negative expectations. This worsened when ambiguity existed in an instructor’s pedagogy. Not addressing those initial expectations of the students abates their motivation, which does not put them in the best place to learn, leading to poor academic performance. The course syllabus is often the first interaction a student has with the course; it can be a critical tool in (re)setting students' initial expectations and allows the instructor …

Curacao Milestone 2023: Welcoming Over Half A Million Tourists, Manuel Rivera, Valeriya Shapoval, Margaret Zorrilla

Dick Pope Sr. Institute Publications

In 2023, the Curaçao Tourism Board achieved significant milestones in promoting and developing the island as a premier tourist destination. The tourism sector experienced remarkable growth, with a 19% increase in stayover arrivals, reaching 582,400 visitors compared to 489,599 in 2022. This marked the first time Curaçao exceeded half a million stayover arrivals.

The success of Curaçao's tourism sector was bolstered by targeted marketing campaigns in key source markets. The Curaçao Tourist Board actively promoted the island through collaborations with local stakeholders, enhancing the effectiveness of their efforts. Additionally, the Board launched several initiatives to raise consumer awareness, such as …

One Beat, One Island: The Seamless Fusion Of Curaçao And The Curaçao North Sea Jazz Festival, Manuel Rivera, Robertico Croes, Brianna Morman, Margaret Zorrilla Cortez

Dick Pope Sr. Institute Publications

The Curaçao North Sea Jazz Festival (CNSJF) has established itself as a significant international event, attracting 6,232 attendees worldwide, significantly boosting the island’s tourism and cultural profile. Notably, 78.9% of attendees, or 4,917 "Festival-Passion Tourists," traveled to Curaçao specifically for the festival. These tourists were affluent and well-educated, primarily from the Netherlands, USA, Venezuela, Colombia, Aruba, and Suriname. Despite ongoing challenges with accessibility, particularly from Aruba, the festival strengthened perceptions of Curaçao as a destination, as evidenced by many visitors expressing intentions to return.[1] Held at the World Trade Center in Curaçao from August 29 through August 31, 2024, this …

Using Geographic Information Systems To Examine Unmet Healthcare Needs Among Transgender And Non-Binary Young Adults In Florida, Nino Franklin

Graduate Thesis and Dissertation 2023-2024

This study explored healthcare utilization among the Transgender and Gender Non-Binary (TGNB) population of Florida using Geographic Information Systems (GIS) to visualize and analyze the spatial distribution of unmet healthcare needs. The aim was to provide a clear comparison of unmet healthcare needs across various regions, highlight areas with the highest and lowest levels of unmet needs, and understand the demographic factors influencing these disparities. Utilizing survey data from the NIH-funded U=CARE study, which involved TGNB participants aged 18-26 from diverse racial/ethnic and socioeconomic backgrounds, the data were cleaned, geocoded, and analyzed within ArcGIS. Geocoded survey responses were linked to …

Opportunities And Insecurities: Discursive Power And The Neoliberal Transformation Of Work In The Great Resignation, Caroline Austin

Graduate Thesis and Dissertation post-2024

This study explores the Great Resignation—a mass wave of voluntary job departures during and after the COVID-19 pandemic— through a Foucauldian lens, exploring the intersections of neoliberal labor practices, worker subjectivities, and discursive power. Using Foucauldian Discourse Analysis (FDA) 25 interviews with individuals who resigned during this period were analyzed to explore how workers engage with neoliberal discourses in making sense of their work-related attitudes, experiences, and decisions as well as the broader discursive constructions used to interpret the Great Resignation as a societal phenomenon. Participants’ narratives reveal varying degrees of alignment, negotiation, and resistance to neoliberal subjectivity, shaped by …

An Intersectional Examination Of Adverse Childhood Experiences And Educational Outcomes In Children In The U.S., Josalie C. Condon

Graduate Thesis and Dissertation 2023-2024

Background: Research has found that Adverse Childhood Experiences (ACEs) have been shown to lead to a myriad of issues including struggling in school. The more ACEs a child experiences, the worse their outcome tends to be, including school outcomes. However, critics of ACE research have argued that not all ACEs weigh the same and intersectionality needs to be considered. Therefore, this study aims to analyze the relationship between ACEs and school outcome issues. These school outcome variables are analyzed, first with a binary ACE variable, then with ACE scale variable, to test whether more ACEs lead to worse outcomes. And, …

The Effectiveness Of Constructed Treatment Wetland Systems At Removing Microplastic Pollution, Katherine L. Johnsen

Honors Undergraduate Theses

Plastics are a highly utilized material in modem society, leading to environmental concerns surrounding plastic pollution. Microplastics, which are defined as plastic particles less than 5mm in size, have additionally become increasingly recognized as a harmful pollutant in aquatic systems. Constructed treatment wetland systems (CTWSs) are highly effective at removal and mitigation of pollutants, including anthropogenic nutrient inputs. This study aims to understand the potential of a CTWS to remove microplastic pollution from tertiary-treated municipal wastewater before discharge into a local natural water body. Microplastic percent removal was determined through the manual quantification of microplastics in triplicate 500mL surface water …

The Effects Of Esg On The Financial Performance Of Aerospace & Defense Companies, Cooper Trimble

Honors Undergraduate Theses

This study examines the relationship between Environmental, Social, and Corporate Governance (ESG) activity and financial performance in the context of firms operating in the Aerospace & Defense industry. As societal pressure increases for companies to adopt ESG and related corporate sustainability practices, it is crucial to understand the repercussions of such adoptions. As the Aerospace & Defense industry continues to grow and capitalize on post-COVID travel booms, military modernization efforts, and increased demand for advanced aerospace technology, it is essential to understand the consequences of ESG implementation. By examining data from 2012 – 2023, this study produced results regarding the …

Grief, Identity Transformation, And Resilience In Emerging Adulthood Following Profound Loss, Isabella S. Marcon

Honors Undergraduate Theses

Loss and grief are unfortunate forces of the human experience, highly variable in the experience of intensity and duration, not limited solely to death. Grief is the process that follows loss, and can be a transformative journey towards personal growth, healing, and reshaping one’s self-concept (Corless et al., 2014).

Individuals who have experienced the loss of a significant figure and have grappled with grief and bereavement during their childhood, adolescence, or emerging adulthood have yet to be thoroughly studied. The repercussions of navigating grief and bereavement during these formative years encompass intrapersonal relationships, coping mechanisms, resilience, and overall psychological well-being …

The Influence Of Foster Parent Characteristics On The Relational Permanence Of Foster Youth, Yogita Venkata

Honors Undergraduate Theses

Research suggests that lack of permanency is associated with an increased risk of aggression, mental instability, and delinquent behavior in children (Leve et al., 2012). A crucial component of permanency involves establishing stable connections, including relational permanence with peers and adults, which are believed to enhance the well-being of foster youth (Wekerle et al., 2009). Further, the literature suggests a relationship between a parent’s adverse traumatic experiences, their attachments to their own parents, and their ability to regulate their foster child’s relational permanence to supportive adults and peers. Foster parents who have experienced trauma are often insecurely attached to their …