Digital Commons Network^™

Fossil Leaf Cuticle: Best Practices For Preparation And Paleo-Co2 Analysis, Xiaoqing Zhang, Dana L. Royer, Carina E. Colombi, Juan Martin Drovandi, Jennifer C. Mcelwain, Gaëtan Guignard, Qin Leng, Barry H. Lomax, Nathan D. Sheldon, Rebekah A. Stein, Garland R. Upchurch, Yongdong Wang, Hong Yang, Richard S. Barclay, Ying Cui, Wolfram Kürschner, Joseph N. Milligan, Isabel Montañez, Jon D. Richey, Tammo Reichgelt, Gongle Shi, Selena Y. Smith, Margret Steinthorsdottir

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

Leaf cuticle is the waxy envelope that protects leaves from desiccation, UV damage, and abrasion. The cuticle encodes information about a plant's chemistry and leaf epidermal and stomatal cell morphology. Fossil leaf cuticle has been used to determine taxonomic affinities for almost two centuries and recognized in recent decades for its value in reconstructing paleoenvironments and paleoclimates, especially atmospheric CO2. Fossil leaf cuticle preparation techniques are typically reported as single workflows tied to individual studies, starting with finding fossils in the field through the steps of preparing cuticle for chemical and morphological analysis, including decisions about type of microscopy and …

Wildfires Impact On Water Treatment, Alli Willmarth, Matthew Jorgenson, Kyle Shimabuku

CURCI Student Research

Study Objective: Determine the effectiveness of using powder activated carbon to remove wildfire dissolved organic matter (DOM).

Usage Of Natural Language Processing And Deep-Learning Techniques On Thematic Apperception Tests To Predict Big Five Personality Traits, Blayten Jones

Electrical Engineering and Computer Science Undergraduate Honors Theses

The usage of personality as a method of behavioral prediction and outcomes of success has grown considerably over the last few decades. This project explores predicting user personality profiles via the Big Five personality index through the integration of advanced natural language processing techniques as well as neural networks. Using a dataset provided by Dr. James W. Pennebaker, participants analyze an image—formally referred to as a thematic apperception test—and write a thorough paragraph describing the details. This free-form text, along with their personality test results, is captured in a structured dataset. Many deep-learning and machine learning models have been used …

A Novel Approach To Attention-Based Models In Image Completion: Weighted Spatial-Attention Using Radial Distance, Tyler D. Kuper

Electrical Engineering and Computer Science Undergraduate Honors Theses

Humans infer missing visual information by focusing on spatial relationships in the context of their surroundings. Machine learning aims to replicate this skill through image completion, a fundamental task in current computer vision research. While advances in self-attention layers have recently enhanced generative machine learning models for text, these mechanisms still currently lack the capability to handle sparse image completion efficiently. We introduce a distance-based attention mechanism that uses radial-based weights to efficiently reconstruct an image. We compare this attention mechanism with self-attention and a fully connected network on an image completion task using the MNIST dataset. Our results show …

Fairness In Recommender Systems: Balancing Bias In Academic Paper Selection, Zachary Bergin

Electrical Engineering and Computer Science Undergraduate Honors Theses

Bias in academic paper selection remains a consistent issue, even within processes designed to promote fairness, such as double-blind peer review, bias stays persistent. In this paper we investigate demographic bias while particularly focusing on racial bias in the process of selecting academic papers and explore the impact of fairness aware recommender systems on the demographic parity. To build an effective system our focus is on the Special Interest Group on Computer Human Interaction (SIGCHI) a pillar in the community, we develop a neural network-based recommender system that uses real demographic data collected by other systems withing the context of …

Synthetic Dataset Generator To Assist In Training Of Multilayer Perceptron Based Neural Network, Megan Leach

Electrical Engineering and Computer Science Undergraduate Honors Theses

Synthetic dataset generation attempts to solve the issue of needing large datasets to train models and observe behaviors in both a cost and time effective way. This project aims to highlight the value of synthetic data creation and how it was useful when training a neural network model by creating a synthetic dataset generator for a specific model in order to evaluate its behavior in difference scenarios. The model that was used in this project was created to select high-quality papers while maximizing the diversity of authors based on race, gender, and country characteristics, essentially mimicking a review process. The …

Leveraging P4 Programmable Switches For Resilient Operation And Design Of Phasor Measurement Unit Networks, Eva Casto

Electrical Engineering and Computer Science Undergraduate Honors Theses

The power grid utilizes a device called the phasor measurement unit (PMU), allowing power system administrators to remotely monitor and manage the state of the grid in Wide Area Monitoring Systems (WAMS). The advantages of PMUs – such as fine-grained, time-synchronized measurements and efficient, decentralized monitoring – are what make them key devices in the power grid. However, PMU technology also comes with new threats of the digital age, like malfunctions and cyberattacks, which can result in missing and faulty measurements that compromise power grid observability. P4 programmable networks can be used to detect faulty PMU data in a decentralized, …

Design, Simulation, And Testing Of Planar Transformer For Smart Green Power Node (Sgpn) Isolation Using Ansys, Brooke Scott

Electrical Engineering and Computer Science Undergraduate Honors Theses

The goal of this project was to design and simulate a small, high-frequency, planar, ferrite-core transformer which can be used in a variety of applications, the most relevant of which is photovoltaic (PV) converter systems, which often require bulky transformers to function properly. The current research involved several processes: (1) Understanding and designing a tutorial for the use of Ansys software to aid in the efficient development and modeling of transformers, (2) designing and simulating a planar transformer in Ansys to be used in a solar converter, specifically the Smart Green Power Node (SGPN), and (3) testing the planar transformer …

Investigation And Characterization Of Silicon Carbide Power Mosfets, Vincent Hassman

Electrical Engineering and Computer Science Undergraduate Honors Theses

As engineers constantly seek to make solar power systems smaller, cheaper, and more efficient, technological enhancements in the electronics that run them are required. One of the most fundamental electronic components of any solar system is the inverter, which takes DC current from the solar cell and turns it into AC current that is supported by the grid. This is done with metal oxide semiconductor field effect transistors (MOSFETs). Through more advanced MOSFET technology, inverters can switch at a higher frequency, increasing efficiency and reducing size and cost.

MOSFET performance can be enhanced by swapping the traditional silicon substrate with …

Marianne Sawicki V. Michael Kipphan

2025 Decisions

USDC for the Middle District of Pennsylvania

An Introductory-Level Undergraduate Cs Course That Introduces Parallel Computing, Tia Newhall, Kevin C. Webb, Vasanta Chaganti, Andrew Danner

Computer Science Faculty Works

We present the curricular design, pedagogy, and goals of an introductory-level course on computer systems that introduces parallel and distributed computing (PDC) to students who have only a CS1 background. With the ubiquity of multicore processors, cloud computing, and hardware accelerators, PDC topics have become fundamental knowledge areas in the undergraduate CS curriculum. As a result, it is increasingly important for students to learn a common core of introductory parallel and distributed computing topics and to develop parallel thinking skills early in their CS studies. Our introductory-level course focuses on three main curricular goals: 1) understanding how a computer runs …

Improving Hypertension Control Through Structured Lifestyle Interventions In Primary Care Settings In Rural Populations “Hypertension: The Silent Killer”, Jose M. Soto-Hernandez

Cohort XIII

Objective: Prevalence of Hypertension: Hypertension is a common condition that affects a significant portion of the population, and its prevalence is higher in rural areas due to limited access to healthcare services and resources. Access to Care: Rural communities often face barriers such as fewer healthcare facilities, limited healthcare providers, and longer travel distances for medical care, leading to delayed diagnosis and management of hypertension. Health Disparities: Rural populations may experience health disparities, including higher rates of hypertension-related complications like stroke and heart disease, due to socioeconomic factors and limited access to preventive care.

Method: Community Assessment: Conduct surveys and …

Characterizing Environmental Background Microflora And Assessing Their Influence On Listeria Persistence In Dairy Processing Environment, Vaishali Poswal, Sanjeev Anand, Brian Kraus

Dairy Science and Food Science Faculty Publications: 2022 to Present

Listeria monocytogenes (Lm) may persist in food processing environments (FPEs) alongside diverse background microflora. While microbial communities in FPEs can in- fluence Lm survival, their role in supporting or suppressing its growth remains unclear. This study aimed to characterize the microflora in floor swabs and air samples collected from a dairy processing facility across three seasons and assess their potential impact on the growth of a Lm test strain previously isolated from a dairy processing environment. A total of 167 environmental isolates, representing 30 bacterial genera, were identified. Pseudomonas was consistently prevalent across all sample types. Seasonal shifts in bacterial …

“More Than What [They] Made Us To Be”: From Passing To Perception In Victorian And Modern Vampire Media, Lauren Sieberg

English (MA) Theses

Throughout Victorian Gothic horror fiction, vampires function as deviant figures, maneuvering within social confines of passing until their status quo-threatening identity is exposed. Of the popular vampires from this period, most gradually fail to maintain status as social insiders—as demonstrated with Bram Stoker’s Count Dracula or Sheridan Le Fanu’s Carmilla, who possess the temporary capacity to pass until their hidden monstrosity is revealed over time. Even if Gothic monsters are confined to a limited space and time far from society, this is still not enough; in accordance with the Victorian culture of morality policing by dominant groups, the vampiric Other …

The Next Generation Of Free Expression Scholarship: A Very Short Manifesto (In Memory Of Fred Schauer), Mark Tushnet

William & Mary Bill of Rights Journal

This Manifesto begins with a discussion of the accomplishments of the prior generation of free expression scholarship. The core of the Manifesto starts with a description of the idea of epistemic authority and draws upon Leiter’s analysis to show its importance in free expression theory. It emphasizes, with Leiter, that epistemic authority is relational: between and among epistemic authorities, and between such authorities and “ordinary” citizens (that is, those who aren’t near the core of an epistemic community that, as a collective, defines the community’s core and boundaries).

That discussion is followed by a description of challenges to the idea …

The Benefits Of A Multi-Framework Approach To Social Movement Scholarship, Ananya Bhamadipati Rao

Standard Theses

There are many different social movement frameworks and approaches used to not only analyze social movements' outcomes but also to account for why they begin and what accounts for them. But in the development of social movement scholarship over the past decades, there has been a tendency in social movement scholarship to advance by rejecting or invalidating previous frameworks. This has left scholars of social movements with unnecessarily myopic approaches over the years. More recent approaches, often in conversation with Global South scholars, have produced more holistic and integrated studies. My thesis joins this field of scholarship. I ask What …

Land Use Matters: The Interactions Between Soil Characteristics, Ecosystem Cycling, And Anthropogenic Influences At Valley View Farm, Heidi Nydam

Standard Theses

Soil characteristics are the foundation of forest and agricultural productivity. Therefore, understanding how soils change as a reflection of changing landscapes is essential for sustainable management. Valley View Farm is a small, multi use farm in central southern Maine, which seeks to balance conservation and successful farming in terms of providing for the owner and the surrounding community. There are a variety of management practices across the farm, but three distinct areas were examined: the Older Forest, which has been only minimally managed for the last 100 years; the Newer Forest, which was selectively logged 15 years ago and left …

What's For Dinner: A Carbon And Nitrogen Stable Isotope Analysis Of Carcinus Maenas In Maine Salt Marshes, Sydney G. Schuster

Standard Theses

Carcinus maenas, AKA the European Green Crab, is a highly invasive species that has established populations in many non-native sites, altering trophic systems and ecological well-being. In recent years, C. maenas populations have drastically increased throughout the Gulf of Maine, and have been particularly harmful to Maine’s estuarine and intertidal ecosystems (Miller et. al., 2014). In this study, we used carbon and nitrogen stable isotope analysis of green crab tissue to examine their dietary patterns, with the hope of parameterizing how they are feeding in and depleting the resources of Maine’s coastal ecosystems. Specimens for this study were collected from …

Diversity-Augmented Training For Generalizable Ai Agents, Wenjun Li

Dissertations and Theses Collection (Open Access)

Deep Reinforcement Learning (RL) has achieved remarkable success over the past decade, from superhuman performance in video games to real-world applications like robotics. However, RL models often lack generalization, making them unreliable when deployed in unfamiliar scenarios. For example, robots must adapt to varying terrains with different slopes and obstacles, yet standard RL training does not explicitly promote such adaptability. While various methods have been proposed to enhance RL robustness, achieving reliable generalization remains an open challenge.

This dissertation focuses on improving the generalization capability of agents in three major settings: infinite horizon RL agents, finite horizon RL agents, and …

Navigating The Tides Of Change: Girls’ Experiences In Scouts Bsa, Alexandra Rush, Olivia Kochis, Beth Belanger, Jennifer Brown Urban, Miriam R. Linver

Journal of Youth Development

On February 1, 2019, Boy Scouts of America officially accepted girls into its signature program (ages 11–18) and changed its name to Scouts BSA. This historic shift provided a novel opportunity for researchers to investigate the experiences of some of the first 13 girls to enter this traditionally all-boy space and examine how participation influenced sense of self and purpose. A qualitative phenomenological approach was adopted to explore girls’ experiences and perceptions and meanings they constructed, using secondary data consisting of 38 transcribed interviews from all 13 girls. Girls ranged in age from 12–18 years old (M = 13.72, SD …

2025 May - Tennessee Monthly Climate Report, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Monthly Reports

Hi All,

For May 2025, the main weather/climate stories were the continued pattern of severe weather impacting Tennessee as well as Chattanooga recording their wettest May in the 147-year weather history of the city. Starting with the record rainfall in Chattanooga, the Chattanooga airport weather station recorded a total of 12.02-inches of rainfall over May 2025, 8.08-inches above normal and 0.02-inches above the previous record wettest May in 1929. Many other areas of East Tennessee and the Cumberland Plateau also had well above normal rainfall this month, but they were emerging out of a drought from last fall and winter …

Statistical Designs For Learning User Preference And Experience, William S. Fisher

All Dissertations

For any organization, designing a new product or planning the features of a new service is a complex decision-making process which depends on understanding its users' preferences and the experiences they have with prototypes of the new product or service. Design of experiments (DOE) offers a framework to aid in the modeling and collection of data to learn user preferences and experiences to facilitate this decision-making process. Questions such as ``which of our newly proposed products is preferred most by our customers" and ``which version of our new service results in the highest monthly revenue" can be readily addressed by …

Disability Pride And Community Connection In Eastern Virginia: The Disability Resource Center Of The Rappahannock Area, Inc., Luke Santore, Lillie Greiman, Rayna Sage

Independent Living and Community Participation

The disAbility Resource Center of the Rappahannock Area, Inc (dRC) is a Center for Independent Living (CIL) that provides services that promote independence, advocacy, and leadership among the people with disabilities they serve. dRC focuses on disability-led services and programs to meet consumers' needs, with an extraordinary level of peer support. RTC:Rural researchers explore dRC's peer mentoring and peer support groups through the Rural Community Living Development project.

“I Now Have The Freedom To Do What I Want, When I Want, Like Anybody Else”: The Impact, Creation, And Management Of Transportation Voucher Programs, Luke Santore, Andrew Myers

Independent Living and Community Participation

Poor access to transportation is associated with negative results in life outcomes such as health, quality of life, employment, and community participation. Rural people with disabilities are particularly vulnerable to poor transportation access. Transportation voucher programs are an effective but underutilized resource that addresses transportation for rural people with disabilities. In this factsheet, RTC:Rural researchers explore how Center for Independent Living (CIL) staff establish and manage voucher programs, and illustrate how vouchers affected the people with disabilities who have used them.

Improvement Of Hanford Waste Vitrification Algorithms With Machine Learning, Uncertainty Quantification, And Gradient-Based Optimization, Lagrande L. Gunnell

Theses and Dissertations

Over 200 million liters of nuclear waste is stored in tank farms in Hanford, Washington, USA. An ongoing effort to immobilize non-solid nuclear waste is through waste vitrification, where waste is mixed and melted with glass-forming chemicals (GFCs) to form a waste glass. Algorithms to determine the ideal mixing recipes are formalized as constrained optimization problems to maximize waste loading in the glass product, with constraints on several properties of the glass melt and final product. These properties are on the glass melt, such as viscosity, electrical conductivity, and corrosion rates, as well as the final glass product, such as …

I-630: Divisive Connection, Jacob A. Key

Architecture Undergraduate Honors Theses

The United States’ highway infrastructure provides ease of access to and through cities and towns across the nation. For many of us, this system of interconnected infrastructure is little more than a means of wayfinding with easy access via plentiful exits to just about anywhere along their footprint. This study peels back this veneer of excess and access to relay an uncomfortable truth: these highways have been and continue to be weapons of segregation and White Supremacy, afflicting millions nationwide with mental and physical health issues, restricted mobility, and further restricted access to social mobility in a nation already rife …

Stories From El Dorado: An Exploration Of Art, Design, And Community Belonging, Madison Harper

Architecture Undergraduate Honors Theses

This project examines the history and cultural impact of the downtown arts district in El Dorado, Arkansas through a series of interviews with local community members conducted in February 2025. El Dorado is a city in Southwest Arkansas popularly known as “Arkansas’ first boomtown.” Since the discovery of oil in the area in 1921, El Dorado saw a rapid rise in population from 3,000 residents to nearly 30,000 residents. This rise in population brought in a desire for more entertainment, which led to the development of cultural institutions including the “new” Rialto Theater built in 1929 on top of the …

Curated: The Impact Of Architectural Sequence On The Journey Through The Art Museum, Zairis Padilla

Architecture Undergraduate Honors Theses

The museum is a culturally significant institution used for learning, thought, and contemplation from its conceptualization in The Enlightenment Movement of the 17th century. The art museum has the potential to create a powerful relationship between the art and the architecture that houses it. The architecture of an art museum becomes a critical participant in the experience of art and affects the spaces in a dramatic way. If the art or architecture overpowers the other, the user experience is impacted; therefore, the connection created between the two within the museum is one of great importance. When a symbiotic connection, or …

All Mud In The End: Exploring Registration Between Handcraft And Digital Craft Through Ceramic 3d Printing, Emily Kloostra

Architecture Undergraduate Honors Theses

The goal of this research was to investigate the possible interconnections between handcrafted objects and digital fabrication technologies, specifically in ceramic 3D printing workflows. Digital fabrication tools have advanced rapidly in recent years, raising questions about the role handcraft can still play in the making of objects and buildings. While many artistic endeavors have investigated how far digital technology can be pushed, this study was focused on bringing handcrafted objects back into the conversation. Specifically, it sought to understand how irregular, handcrafted objects may be registered in the digital space and then used in 3D printing processes.

The study used …

Evaluating Ai As A Design Tool In Architectural Workflows: Exploring Its Effectiveness In Addressing Design Problems And Integrating Into Studio Processes, Seth S. Cutlip

Architecture Undergraduate Honors Theses

This paper examines the integration of AI imaging tools into traditional analog workflows within architecture studios. This looks specifically at the early conceptual design phase and examines, through a research through design approach, how AI imaging tools like Comfyui and Krita can support ideation, material exploration, and spatial composition. This approach will be remaking design exercises from a prior architectural studio, the study critically evaluates the effectiveness of AI tools in addressing design problems, enhancing workflow efficiency, and supporting creative agency. The findings show both the generative potential and the limitations of these AI imaging tools. This emphasizes the need …