Digital Commons Network^™

Replicating Vignoles Et Al. Results On Multidimensional Self-Construal: Comparing The United States, East Asia, Southeast Asia, And Latin America, Jon Lorenz A. Lim

Master's Theses

Contemporary research on self-construal indicates that people define and perceive themselves either as independent or interdependent. Self-construal scales have become the most common method to quantitatively measure both types of self-construal across the United States, East Asia, Southeast Asia, and Latin America. Multidimensional measures of the self tend to be more accurate in defining the self than earlier dichotomous scales. In general, European Americans and Latin Americans perceived themselves as independent and East and Southeast Asians as interdependent. In the current study, undergraduate European American, East Asian American, Southeast Asian American, and Latin American students from San Jose State University …

An Interpretative Phenomenological Analysis Of Black Female Swimmers' Experiences Of Belonging, Felicity E. Passon

Master's Theses

Although swimming participation has grown in the United States, the experiences of Black female swimmers remain significantly underrepresented in academic literature. This study addresses that gap by exploring the lived experiences of Black women participating in Division 1 (D1) college swimming. Using Interpretative Phenomenological Analysis (IPA) and Black feminist thought, the research explored how Black female D1 swimmers experienced belonging in this underrepresented sport. Semi-structured interviews were conducted with nine D1 Black female swimmers, and six major themes illustrate the varied factors that shaped their experiences of belonging. Even with racially gendered barriers to inclusion, they identified strategies to foster …

Investigating The Complexity Of Language Acquisition For Linguistically Diverse Children, Krittin Srisajjakul

Master's Theses

Understanding the natural productions of children's early expressive language development is important to support their development. These natural productions may also be especially complex in children with diverse linguistic backgrounds. A challenge for clinicians is how to assess these natural productions for children’s early expressive language milestones. For example, what does it mean for children to say the same word in two languages and refer to the same concept (e.g., “water” and “agua”)? Or refer to two different concepts, (e.g., “water” and “leche” (milk))? By understanding how children’s expressive language connects to conceptual understanding, clinicians can better support language learning. …

Sirilla: Predicting Traffic Flow Via Stacked Decentralized Federated Learning, Andrew Selvia

Master's Theses

Billions of people today rely on traffic predictions to optimize their travels. Digital mapping services deliver accurate predictions by learning from vast troves of historical data. Impressive as these systems are, their assumptions do not always apply. They depend on an endless flow of sensitive user data to a central authority, a stable Internet connection, and trustworthiness on both sides of the traditional client-server model. This thesis explores a novel architecture which bucks those assumptions. In the proposed model, traffic data remains on edge devices which individually train models via federated learning. Beyond the obvious privacy benefits, this architecture enables …

False Starts & Finish Lines: Youth Sports, Coaching, & The Crisis Of The American Dream, John S. Lammert Jr

Master's Theses

False Starts & Finish Lines: Youth Sports, Coaching, & the Crisis of the American Dream examines how the American youth sports system reflects, reproduces, and at times resists the evolving contradictions of the American Dream. Drawing on a comparative analysis of institutional documents from public high schools, travel clubs, and recreational leagues, this thesis interrogates how youth sports have shifted from inclusive spaces of play and character-building to stratified marketplaces governed by the Athletic Industrial Complex (AIC). It argues that rising costs, performance pressures, and privatized structures have transformed access to sport—and, by extension, to the Dream itself—into a function …

Seconds From Impact: Anticipatory Vehicular Crash Prediction Using Video Vision Transormers, Ryan P. Geisen

Master's Theses

Vehicular collisions represent a significant public health concern, necessitating re search into advanced emergency notification systems. While deep learning has shown promise in accident detection, a research gap persists in applying state-of-the-art transformer architectures to the task of anticipatory, real-time crash prediction from video. This thesis addresses this gap by developing and evaluating a Video Vision Transformer (ViViT) for the binary classification of imminent vehicular collisions. Utilizing a curated dataset of 1,493 unique collision sequences, this study systemati cally investigates the impact of temporal context by comparing the ViViT against a single-frame Vision Transformer (ViT) baseline and conducting comprehensive exper …

Humanizing The Icu: Implementation Of Personalized Communication Boards In The Sicu Drives Enhanced Patient And Family Experience, Stephen D. Hoefler

Master's Theses

Objective: Research has established the importance of personalized communication in critical care settings, where standardized tools like whiteboards can improve patient and family engagement.

Aim: This project aims to develop a personalized communication board in the surgical intensive care unit (SICU) at a Bay Area academic quaternary care facility that, once implemented, will achieve at least 75% utilization in patient rooms by May 2025, enhancing communication and patient experiences.

Methods: Surveys were conducted with patients, families, and staff to gather stakeholder input and guide the design of a new standardized whiteboard model with personalized elements. Results: Based on stakeholder feedback, …

Loss Of Neuropeptide F (Npf) Signaling Reduces The Strength Of Circadian Rest-Activity Rhythms But Not Feeding-Fasting Rhythms, Katelyn Ann Wendt

Master's Theses

The circadian system governs crucial physiological and behavioral processes, dictating activities like movement, hormone release, and sleep patterns over a 24-hour cycle. Disruptions to these rhythms can lead to various health problems, including cardiometabolic dysfunction. Research has demonstrated the presence of circadian rhythms of feeding behavior in diverse organisms, but the specific molecules involved are not yet identified. Neuropeptide Y (NPY) influences metabolic activity in mammals, and its counterpart, NPF, affects locomotor activity and feeding in Drosophila melanogaster. Our study aims to investigate whether NPF, its receptor (NPFR), and NPF-expressing cells play a role in regulating circadian rest-activity and feeding-fasting …

The Impact Of Child And Parent Trauma Exposure On A School-Based Trauma-Focused Child Intervention, Andrea Donis

Master's Theses

National statistics demonstrate that vast majority of Latine youth living in low-income neighborhoods in the United States experience on-going trauma exposure throughout their life. However, most trauma-focused therapies were designed without considering the impact that experiencing new trauma exposure during treatment may have on treatment effectiveness, limiting our understanding of the potential attenuation caused by new traumatic experiences. In addition, most youth research has focused on the impact of child trauma exposure, with little attention given to the impact of parental trauma exposure on child treatment outcomes despite the salient role that parents play in child development. In particular, little …

Two Leading Female Figures Of The Anti-Colonial Struggle In Africa, Marie-Ange Anezi Djie

Master's Theses

The Eurocentric and male narrative of the anti-colonial struggle in Africa during the twentieth century marginalized women’s contributions and presented them as passive victims of colonialism. Therefore, this study offers a more comprehensive historical account of women's leadership in Africa and a more inclusive and liberated narrative of the anti-colonial movement. Achieving this goal involves delving into the roles and contributions of two prominent female figures in the anti-colonial resistance in Northern and Sub-Saharan Africa during the twentieth century: Huda Shaarawi from Egypt and Funmilayo Ransome-Kuti from Nigeria. Furthermore, this study aims to demonstrate that the actions and strategies of …

Family Matters: Experiences Of Family Stigma, Addiction Recovery & The Role Of Self-Compassion, Kennedy Hoying

Master's Theses

Addiction and substance use is currently one of the most stigmatized disorders in society, creating a barrier to treatment and recovery. This study explored the role of family stigma, the stigmatization processes of family members of otherwise stigmatized individuals, within families of substance users to examine how stigma might affect family support behaviors. Two hundred and twenty-two U.S. adults who have a substance using family member completed an online survey regarding their experiences of family stigma, attributions of responsibility for addiction, self-compassion, and any supportive recovery behaviors they engage in to help their family member’s addiction. Results of correlation analysis …

Anthropogenic Litter In Freshwater Ecosystems: Effect On Ecosystem Processes And Spatial Distribution, Emily Johnson

Master's Theses

The rapid increase of plastic production and disposal into the environment has resulted in anthropogenic litter (i.e., trash; AL) becoming a global problem. In aquatic ecosystems, macro- and microplastics are long-lived, mobile, and interact with the physical and chemical components of aquatic ecosystems. Our objectives were to: (1) assess the impact of microplastic pollution on the ecosystem processes of ecosystem metabolism and N2 flux in an oligotrophic lake and (2) to assess the abundance and assemblage of anthropogenic litter in a large urban river. For objective (1), we added microplastics at a range of concentrations to littoral mesocosms. Ecosystem metabolism …

The Mechanisms Of Heterogenic Necrotic And Apoptotic Cell Death Fates In Human Epidermal Keratinocytes Following Uvb Exposure, Madeline Zoe Tara

Master's Theses

UVB radiation is a carcinogen that triggers inflammation and contributes to skin carcinogenesis. Although UVB exposure can induce apoptosis, this form of cell death is non-inflammatory and thus cannot explain the inflammatory response observed following UVB. Necrotic regulated cell death (RCD) pathways, namely necroptosis, pyroptosis, and PANoptosis, are inherently pro-inflammatory, and thus this study focused on characterizing these in irradiated human epidermal keratinocytes. Keratinocytes were irradiated, treated with cell death inhibitors, and analyzed for apoptotic and necrotic RCD markers using immunofluorescence (IF). Despite uniform UVB exposure, keratinocytes displayed heterogeneous cell death responses, and these findings were validated in ex vivo …

Video Game Hacking, A General Problem With Generalized Solutions, Luke Rowe

Master's Theses

As video games continue to get more popular and lucrative, the number of malicious actors seeking to exploit them grows with it. As this industry expands, so does the importance of securing games against cheating and abuse. This thesis aims to educate developers to help mitigate the abuse of video games by these malicious actors. The goal of this thesis is to provide a foundational framework for thinking like a hacker and how to make games harder to abuse once a hacker bypasses conventional anti-cheat software.

This thesis outlines some of the most common cheating methods and provides general context …

Evaluating The Viability Of Shared Electric Vehicle Fleet Services For A Higher Education Campus Through An Assessment Of Current Commuter Behaviors, Gabriel Denson

Master's Theses

The transportation sector remains the largest contributor to greenhouse gas emissions in the United States, with single-occupant personal automobile travel accounting for a significant portion of total emissions. While sustainable mobility solutions such as electric vehicles (EVs) and shared transportation services have emerged as potential strategies to reduce environmental impact, adoption rates remain slow due to behavioral, economic, and infrastructural barriers. This research explores the feasibility of a shared electric vehicle fleet service to reduce vehicle miles traveled (VMT) and improve mobility in and around college campuses, using California Polytechnic State University, San Luis Obispo, as a case study.

Through …

Reverse Engineering Bring Up And Profiling Of Multi-Fpga Systems, Henry A. Evans

Master's Theses

FPGAs have long been used for prototyping and verifying high-speed digital designs in industry and in academic research. As ASIC designs have grown in complexity and size, prototyping those designs on FPGAs has required multiple FPGAs that sometimes span multiple servers. Western Digital donated multiple FPGA-based systems to Cal Poly in 2023. These servers contain multiple high-end AMD FPGAs that are ideal for prototyping large high-speed digital designs, however the full documentation on how to use the servers and how the servers work was not provided. The servers did not come with any information on how to program the FPGAs, …

Griddle: A Novel Hardware Based Matrix Multiplier Architecture, Seth Kiefer

Master's Theses

Matrix multiplication is a computational cornerstone in modern artificial intelligence and scientific computing, yet general-purpose processors struggle to perform these operations efficiently at scale. This thesis presents Griddle, a novel hardware architecture for matrix multiplication implemented on a Xilinx Artix-7 FPGA. Griddle focuses on flexibility and scalability by adopting a purely iterative approach that supports arbitrarily shaped input matrices without requiring padding or strict dimensional constraints. The architecture uses computational pipelines to execute a multiplication operation. Each pipe consists of a multiplication core and accumulation buffer that compute matrix products in parallel. The multiplication core contains a set of multiplier …

Effectiveness Of Nutrition Education On Male Student Veterans From Cal Poly, San Luis Obispo University, Keith S. Kim

Master's Theses

This pilot study evaluated the effectiveness of a 13-week nutrition education intervention designed to improve dietary patterns, physical health, and mental health outcomes among 10 student male military veterans at California Polytechnic State University, San Luis Obispo. The intervention, grounded in the Dietary Guidelines for Americans, 2020–2025, included a one-time educational presentation and periodic recap videos to reinforce key messages. Outcome measures included dietary intake, body mass index (BMI), handgrip strength, depressive symptoms (via the Beck Depression Inventory), and post-traumatic stress disorder (PTSD) symptoms (via the PCL-5). Results revealed no statistically significant changes in dietary patterns, BMI, handgrip strength, …

Streamlined Intelligence: Resource-Efficient Machine Learning For 5g Nr V2v Channel Equalization, Jacqueline G. Radding

Master's Theses

As autonomous vehicles continue to evolve, reliable and efficient real-time communication between vehicles is essential for safety and performance. This thesis explores Streamlined Intelligence: Resource Efficient machine learning for 5G NR V2V Channel Equalization, focusing on lightweight random forest decision tree models to address the challenges of channel equalization in 5G New Radio (NR) vehicle to vehicle (V2V) systems. Using orthogonal frequency division multiplexing (OFDM) with QPSK modulation, the study simulates data transmission in nonlinear channels characterized by obstructions, Doppler shifts, and fading. Decision trees are proposed as a computationally efficient alternative to other machine learning methods while being compared …

"Great Big Beautiful Tomorrow": Disneyland, Science, And The Cultural Cold War, Emily Searson

Master's Theses

Disneyland, the popular Anaheim-based theme park in California, opened its doors during heightened Cold War tensions in 1955. In this thesis, I trace the origins of Tomorrowland, one of the five original themed lands in Disneyland that included futuristic rides and attractions to depict Walt Disney’s imagining of the year 1986. I examine Tomorrowland in particular to argue that WED Enterprises (Disneyland, Inc.’s research and development arm) and Disney’s vision of scientific progress aligned with U.S. Cold War policy goals, especially containment. Disney and WED Enterprises meticulously planned Tomorrowland with the help of notable American defense contractors, including the Monsanto …

Low Earth Orbit Drag Sail Degradation Due To Atomic Oxygen And Ultraviolet Radiation, Hannah Rost

Master's Theses

As the orbital debris population increases, so does the risk of collisions with operational spacecraft. In response, the Federal Communications Commission has shortened the deorbit requirement from 25 years to five years. While natural atmospheric decay was sufficient under the previous guideline, many objects with low area to mass ratios can no longer passively comply. Smaller, non-propellant-carrying space objects such as CubeSats lack the ability to maneuver and must rely on alternative deorbit methods. One proposed solution is to deploy a drag sail at end of life to increase atmospheric drag and accelerate orbital decay. However, exposure to atomic oxygen …

Design And Development Of A Half-Bridge Llc Resonant Converter Laboratory Module, Alyssa Lam

Master's Theses

Resonant DC-DC converters have become a well-known solution in power supplies due to their ability to improve efficiency by utilizing soft-switching techniques. This further has caused a growing interest in industry to use these converters for high-switching-frequency, high-efficiency, and high-power applications such as EV charging stations, photovoltaic systems, battery chargers, etc. One particular resonant topology that has gained popularity in recent years is the LLC resonant converter. Due to the prevalent use of the LLC resonant converter, it is therefore crucial for students preparing for a career path in power electronics to become well-versed in the concept and implementation of …

Coherent Synchronization For Distributed Digital Phased Arrays, Zachary C. Numa

Master's Theses

Distributed digital phased arrays are rising technologies that help enable applications such as search and rescue operations, wireless communication, radar navigation, and military operations, among many others. Due to their improved angular resolution, digital phased arrays offer superior direction-finding capabilities compared to traditional analog phased array systems. However, this improvement comes at the cost of increased complexity—specifically, the need for precise synchronization of phase, time, and frequency across physically separated nodes. Without synchronization, the distributed phased array's gain and direction-of-arrival (DoA) estimations deteriorate significantly.

There are multiple aspects to implementing and synchronizing a non-stationary distributed digital phased array. This research …

Open Source Microgrid Integration, Zachary J. Kwast

Master's Theses

Microgrids are small-scale electrical systems that operate in tandem with a centralized grid to provide power to a smaller group of target devices. These microgrids are used for a wide range of different purposes, which invites the need for a generalized model that can be tweaked for a variety of uses. This document goes over the theory used to design an open source AC and DC microgrid meant for use by anyone. The microgrid is created using a Raspberry Pi that controls two different power converters so that a wide range of voltage and current characteristics can be achieved. These …

Bandwagon Behavior In Major League Baseball, Daniel E. Erro

Master's Theses

This study investigates “bandwagon” behavior among Major League Baseball (MLB) fans by analyzing Google search interest data from 2004 to 2019. Drawing on publicly available information from Google Trends, the analysis explores how fluctuations in search activity align with team performance during both the regular season and postseason. Hierarchical linear models are used to estimate expected levels of fan interest based on team performance and market characteristics. Deviations from these expectations during the regular season are interpreted as evidence of bandwagon or anti-bandwagon behavior. A drop-off in interest following playoff elimination is also examined to capture shifts in fan attention …

Quantifying Harmful Trunk Postures: Inertial Sensor Analysis Of Trunk Angle To Support Low Back Pain Prevention, Elsa E. Bates

Master's Theses

Low back pain is a highly prevalent condition worldwide, impacting up to 80% of individuals at least once in their lifetime. A critical gap in current prevention strategies is the lack of tools to accurately measure trunk posture and movement in real-world environments. Accurate identification of biomechanical risk requires information about movement intensity, duration, and frequency, yet traditional assessment methods rely on self-reporting or visual observation, which are time-consuming and prone to error. To address this gap, a wearable monitoring method, consisting of two Inertial Measurement Units, was designed to quantify risk exposure to the spine by measuring angular position …

Design Principles For Robotic-Controlled 3d Printing Of Soft Tissue-Mimicking Materials, Karina Mealey

Master's Theses

Geometrically and physically accurate 3D models are emerging as essential tools for surgeons in pre-operative planning and training, but current methods of producing these models are not sufficient. Existing solutions have downsides such as high costs, long and tedious production times, high complexity resulting in a lack of scalability, or an inability to meet material requirements for accurately simulating human tissue.

The objective of this work is to develop principles for a low-cost, easy-to-use 3D printing system capable of prototyping with soft tissue-mimicking materials. To pursue this goal, a MyCobot280 robot arm was used as the mechanism to explore the …

Machine-Checked Proofs For Correctness Guarantees In Containment Architectures, Sophie Russ

Master's Theses

Modern computing systems are increasingly susceptible to attacks at the hardware and software levels. Formal methods offer promising guarantees as to the correctness and security of systems. However, these methods tend to scale poorly and are thus insufficient to protect complex systems. Leveraging minimal amounts of trusted hardware and software to ensure the security of whole systems is a promising approach to gain the benefits of formal methods without having to overcome the scaling problem. TrustGuard realizes this approach: a containment architecture model that requires all outgoing communication from the host computer to be validated by a small, external hardware …

Frequent Itemset Mining With Tidyclust In R, Andrew D. Kerr

Master's Theses

Unsupervised learning is closely associated with clustering, however other methods fall under this umbrella such as data mining. In R, the tidyclust package provides a unified interface for clustering models, yet lacks support for data mining. This thesis addresses this gap by introducing the Apriori and ECLAT algorithms into tidyclust, with a focus on frequent itemset mining. Unlike traditional clustering models, frequent itemsets produce groupings of column variables, rather than cluster labels or partitions of observations. To address this, a novel clustering approach is proposed: items (columns) are grouped based on their ”dominant” frequent itemset. A key contribution is a …

Functionalization Of A Calcium-Based Squaric Acid Metal Organic Frameworks With Amine-Based Polymers For Enhancing Post Combustion Carbon Capture, Corinne D. Watson

Master's Theses

The primary driver of climate change is the release of carbon dioxide (CO₂) from fossil fuel combustion. Global climate change has resulted in sea level rise, adverse weather patterns, and countless other negative global effects. Several carbon-reduction frameworks emphasize the transition to clean energy sources; however, other strategies must be concurrently pursued to immediately and effectively reduce atmospheric carbon dioxide point source emissions. Metal organic frameworks (MOFs) are a promising new technology for post-combustion carbon dioxide capture. The materials are synthesized using organic linker molecules and metal ion joints. Notably, there are several challenges with various types of …