Digital Commons Network^™

A Scalable Iteration Of The Horizon Simulation Framework Using Multithreading Techniques, Jason E. Beals

Master's Theses

The Horizon Simulation Framework (HSF) occupies a unique space in the modern aerospace modeling landscape, enabling flexible, modular modeling of mission-level agent behavior through an object-oriented, hierarchical design. HSF's hallmark breadth-first search scheduling algorithm explores a "multiverse" of possible mission execution pathways, enabling exhaustive evaluation of schedule combinations against user-defined heuristics.

As aerospace systems become increasingly complex, HSF faces critical challenges in establishing verifiable, deterministic behavior. The framework's core scheduling algorithm had not undergone systematic validation, leaving questions about temporal consistency, state management correctness, and reproducibility across different program executions. Furthermore, the exponential growth of schedule combinations creates computational bottlenecks …

Design And Development Of A 12-Degree-Of-Freedom Quadruped Robot, Kai De La Cruz

Master's Theses

This thesis presents the design, analysis, and experimental validation of a 12-degree-of-freedom (DOF) quadruped robot developed as a research platform for legged locomotion and control. The system builds upon the Cal Poly Legged Robotics Group’s prior 8-DOF quadruped, addressing key limitations in manipulability, load distribution, and mechanical robustness by introducing a 3-DOF leg architecture.

The mechanical design emphasizes lightweight construction, structural integrity, and modularity to support future research extensions. Static and dynamic loading models were developed to inform component sizing and material selection. A carbon-fiber chassis and redesigned leg assemblies were fabricated and validated through finite element analysis and physical …

Sea Level Trends Near Critical Levees In The Sacramento-San Joaquin Delta, Reyna Sanchez Gomez

Master's Theses

The Sacramento-San Joaquin Delta (Delta) levee system faces threats from rising sea levels, land subsidence, and deteriorating levees, all of which pose risks to California’s primary surface water supply. The purpose of this thesis is to assess relative sea level rise (RSLR) and estimate the spatially varying factors that influence water levels in the Delta. This thesis extends the work of Baranes et al. (2023) to the period 1975-2022 by appending recently acquired water-level records (1975-1982) to modern datasets (1982-2022) from 10 water-level stations. These water level datasets were digitized, quality-assured, and referenced to a common geodetic datum, as described …

Designing For Trust In Chat-Based Question Answering Systems: An Exchange-Based Retrieval Approach, Nathan Mccutchen

Master's Theses

Community chat platforms such as Discord and Slack support spontaneous, collaborative communication but make it difficult to retrieve previously discussed information. As conversations accumulate, valuable exchanges become buried, leading to repeated questions and sustained burden on experienced community members.

This work contributes a set of design requirements for question-answering systems operating over unstructured chat data, a Discord bot prototype implementing those requirements named Echo, and an empirical evaluation of how such a system affects user trust. Rather than encoding discrete question-answer pairs or generating synthetic responses with a language model, Echo indexes conversation topics for semantic retrieval and presents results …

Environmental Impact Of Preventative Fire-Retardant Applications On Soil Water Chemistry, Patrick C. Michelsen

Master's Theses

Between 1992 and 2012, 84% of all documented wildfires were started by humans. These fires often start around high-risk locations such as power lines and roadsides where fuel loads are near these potential human-caused ignition sources. Point source ignition sites that are surrounded by shrubs or grasslands are especially important because fires that occur within these biomes are responsible for far more destruction of property than forest fires. One strategy that is effective at mitigating the spread of fires from ignition sites that are within grassland or shrub biomes are preventative fire-retardant products (PFRPs). These PFRPs differ from traditional fire-retardant …

A Ship Between Worlds: Illicit Trade, Empire, And Enslavement In The Voyage Of The Nuestra Senora De Las Nieves, 1819-1820, Carly Eastham

Master's Theses

This study examines the illicit Spanish transatlantic slave trade to Cuba during the post-abolition era through a microhistorical analysis of the 1819 voyage of the schooner Nuestra Señora de las Nieves. Despite international efforts to suppress the trade following abolition treaties, this voyage illustrates how Spanish traders adapted their practices to continue trafficking enslaved Africans, fueling Cuba’s booming sugar economy amid shifting geopolitical and economic pressures. Drawing on primary documents seized by the British navy and analyzed alongside relevant secondary scholarship, this research situates the Cuban trade within the broader Atlantic world’s complex cultural, legal, and economic transformations.

The case …

A Literature Review On Ethics In Medical Diagnostic Ai & Analysis Therein, Connor J. Turetzky

Master's Theses

Artificial Intelligence presents a very promising future in medicine. Being able to diagnose and recommend treatments quickly is vital in ensuring positive patient outcomes. However, the new technology is not without risk. In this narrative literature review, the risks of AI in terms of bias, ethics, and environmental impact will be explored through existing research. This paper will focus on research published between 2019 and 2026, highlighting the major ethical and systematic problems currently facing diagnostic AI. Historical bias in medical data has led to AI that share those biases, and humans inherit that bias creating a potential negative feedback …

Defining Limited English Proficiency: Implications For Assessment And Special Education Placement Decisions, Christine Vernon

Master's Theses

Problem

The problem addressed was the lack of a clear, consistent definition of Limited English Proficiency, despite its influence on funding, programming, assessment, and student placement. The purpose of the study was to clarify how LEP is constructed and used in educational literature and to explore its impact on assessment practices. This study examines the definition of Limited English Proficiency and its implications for educational assessment and special education placement decisions.

Methodology

An integrative literature review, guided by meta-narrative methodology and structural coding, was conducted using 119 peer-reviewed sources from APA PsycInfo, ERIC, and JSTOR (2001–2023).

Findings

Findings revealed that …

Assessing The Ecological Drivers Of Wildfire Hazard Mitigation Of Fuels In The California Home Ignition Zone, Christopher David Benterou

Master's Theses

Consecutive years of devastating home losses to wildfire indicate the need for home fuel reduction and construction improvements. Existing research correlates house survival with modifications to the home ignition zone (HIZ) and is required in high fire hazard areas of California (CA). Mitigations, designed to disrupt continuous fuel patterns, (e.g., separating surface and canopy fuels), can also introduce ecological changes that can alter overall code compliance. Previous compliance studies used respondent and agency-generated data, which may lack accuracy. Assessing additional house and ecological features (e.g., canopy cover and construction) would improve prediction of compliance, but these relationships are poorly studied. …

Mobile Markets And Farmers’ Markets: Evaluating Food Accessibility For Underserved Communities In The Bay Area, Rajeshwari Rajesh

Master's Theses

Studies indicate including farmers’ markets, mobile markets, and other local food systems improve fresh food access for low-income communities, especially when paired with food assistance programs that offer financial incentives. This study aims to evaluate mobile markets and farmers’ markets in the Bay Area using the five dimensions of food access: accessibility, availability, acceptability, affordability, and accommodation. The study is based on primary data collected from 173 in-person surveys at six mobile and eight farmers’ markets in the Santa Clara and Contra Costa counties. Key survey participants were market shoppers participating in food assistance programs. A mixed research methodology included …

Game Genre, Gender, And Sense Of Community In Online Gaming, Patrick Brown

Master's Theses

Sense of community has been shown to improve quality of life in numerous ways. Previous research suggests sense of community can be felt even within groups that never meet in person. The current study explored the relation between game genre, gender status, and sense of community in online gaming groups. Additionally, discrimination was included as an additional outcome due to its close link with sense of community. A total of 189 college students (Mage = 20 years old) of diverse gender and ethnicity completed an online survey consisting of the Sense of Community Scale, Everyday Discrimination Scale, demographic questions, and …

The Effects Of Educational Materials On Knowledge And Attitudes Toward Psilocybin, Lindsey Elise Wade

Master's Theses

Depression is one of the most prevalent and burdensome mental health conditions worldwide, affecting millions and contributing to over 700,000 deaths by suicide annually. Nearly half of patients with major depressive disorder fail to respond adequately to standard antidepressant treatments such as selective serotonin reuptake inhibitors (SSRIs). Psilocybin-assisted therapy (PAT) has emerged as a promising alternative for treatment-resistant depression (TRD), yet public understanding of this therapy remains limited. The present study examined whether a brief psychoeducational intervention could affect knowledge and attitudes toward PAT among members of the general public in the United States. Participants were randomly assigned to read …

Subculture And Identity As An Escape From The Societal Norms Of Power Imbalance And Authoritative Abuse, Sarah Goldberg

Master's Theses

By definition, a “bolthole” is an animal’s escape or burrow; or, a person’s escape or place of refuge. It also connotes construction, building, even sculpture - relating proletarian materials to themes of working-class labor and the need for escape. Through sculpture, installation, drawing, and oil painting, Bolthole as a body of work examines power imbalance as a societal norm, and identity and subculture as a rejection of the influence of capitalist institutions. Animal symbolism is used in combination with figurative work and portraiture, directly comparing power imbalances between humans to those in nature; such as predator and prey, parent and …

A Functional Mri Meta-Analysis Encoding In Alzheimer’S Disease, Joanne Ha

Master's Theses

Alzheimer’s disease (AD) is the most common form of dementia and is characterized by episodic memory impairment. Numerous functional magnetic resonance imaging (fMRI) studies have examined brain activity differences between individuals with AD and age-matched controls during memory encoding. However, small sample sizes and methodological variability across studies have limited the ability to draw meaningful conclusions regarding brain activity underlying encoding impairments. We conducted a meta-analysis to identify consistent patterns of hyperactivity and hypoactivity in AD during episodic memory encoding. Using PubMed to identify studies that met our inclusion criteria, 1,002 studies were screened; ultimately, seven studies were included in …

I Can’T Believe It’S Not Social: Investigating The Relationship Between Loneliness, Parasocial Relationships, And Potential Moderators, Hannah I. Suozzi

Master's Theses

Increased loneliness trends coincide with increased media use. Media is turned to as a source of comfort and distraction from the real world. There is cause to believe that people also use media as a way to form parasocial relationships (PSRs), one-sided relationships audiences form with media figures (i.e., celebrities, influencers, and fictional characters). The connection between loneliness and PSR is thought to be moderated by social vulnerability, particularly the need to belong (NTB) and ethnicity. The medium from which PSRs originate lacks empirical study. To address the limitations, this study analyzed data collected from San Jose State University students …

A Methodology To Reconstruct The Extent And Dynamics Of Historic Wildfires (1850-1950) In The Santa Cruz Mountains Of California, David Vásquez Ospina

Master's Theses

This thesis reconstructs the extent and dynamics of historic wildfires in the Santa Cruz Mountains of California between 1850 and 1950 using qualitative archival evidence from historical newspapers, maps, and related documents. A systematically coded database of 225 reports, consolidated into 155 unique wildfire events, was developed to analyze temporal and spatial patterns, ignition sources, vegetation types, suppression strategies, and impacts on communities and infrastructure. Historical rainfall records from the Boulder Creek station were integrated using water-year totals, three-year rolling averages, and standardized precipitation indices to examine how multi-year dryness relates to fire occurrence and size. Linear regressions show only …

Building A Data-Driven Security Ai Framework Using Machine Learning Models, Christopher Chan Vi

Master's Theses

This research project explores a modern approach to Intrusion Detection System (IDS) anomaly detection by leveraging Artificial Intelligence (AI), Machine Learning (ML), Large Language Models (LLM), and Explainable AI (XAI). The purpose is to assess the effectiveness of these technologies in enhancing the understanding of intrusion events. This research study addresses the challenges of threshold determination and the interpretability of anomaly detection results. The proposed solution involves an LLM-based framework with XAI capabilities, integrated with a Retrieval Augmented Generation (RAG) architecture, to provide clear explanations for detected anomalies, utilizing both custom and pre-trained datasets. The study navigated inherent challenges, including …

Fully Integrated Slippage Detection System For Lower Limb Amputees, Christopher E. Miglio

Master's Theses

Lower limb amputees face significant challenges in maintaining a proper prosthetic fit, as improper fit can lead to slippage at the limb-socket interface, resulting in discomfort, pressure sores, and long-term musculoskeletal complications. To address this issue, a fully integrated slippage detection system was developed to monitor an amputee’s daily activities and slippage occurrences to understand their prosthetic fit over time. The system consists of a prosthetic sock embedded with Interlink 406 flexible piezoresistive force-sensing resistors (FSRs). The sock, worn directly on the residual limb, continuously measures pressure at the limb-socket interface. Sensor data from six FSRs is sampled at approximately …

Muscle Impulse Transducer: Research, Pre-Pilot Experiments, And The Design Of A Pilot Study For Quadriplegic Spinal Cord Injured Subjects For The Development Of A Novel Device, Marta Oreglia

Master's Theses

Paralysis due to spinal cord injury is a challenging condition that affects millions of people around the world. The Muscle Impulse Transducer (MIT) is a novel, wearable device that can be used to improve grip strength in the hand by using functional muscle impulses as a trigger for stimulus delivery to weakened or paralyzed nerves, to induce contraction of a paralyzed or paretic muscle. The MIT is still in development, with proof of concept [1], and functional prototypes [2] achieved. In this thesis, research was conducted on the best methods for functional electrical stimulation, EMG data collection, and nerve stimulus …

Performance Enhancement For Rufa: Rapid Urban Forest Assessment, Nicholas Tan

Master's Theses

Urban forests are crucial to the livability and resilience of cities, offering critical ecosystem benefits such as air quality enhancement, temperature regulation, and biodiversity. Managing said urban forests is essential to ensure their sustainability and adaptability to rapidly changing environmental and climate conditions. The Rapid Urban Forest Assessment (RUFA) tool was developed to address the need for a standardized approach to evaluating and comparing urban and community forestry programs. By analyzing and aggregating tree-specific data across California, such as canopy cover, tree counts, and diversity scores, RUFA assigns a comprehensive urban forestry score for each city. This score allows for …

Educational Methods For Fostering Sustainability Competencies: A Toolkit For Integration Of Sustainable Education In Engineering, Clara Hallgarth

Master's Theses

This thesis proposes a framework to assist in developing educational activities targeting the longitudinal growth of sustainability skills, knowledge, and attitudes (cumulatively known as competencies), contextualized in a Toolkit for engineering educators. This framework is applied to three civil engineering classes in a teaching-oriented university to demonstrate potential applications and limitations. Sustainability integration in higher education institutions has been recognized as increasingly important as complex sustainability challenges continue to develop and arise. Sustainable education, a pedagogical framework and collection of educational methods, has been shown to produce students with the key sustainability competencies needed to address sustainability challenges and promote …

Using Scenario-Based Design Activities To Explore Sociotechnical Thinking In Engineering Professionals, James M. Whealan

Master's Theses

Sociotechnical thinking is the ability to recognize the interconnectedness of both technical and non-technical dimensions such as environmental, economic, social, cultural, and political factors. Although traditional engineering curriculum often emphasizes technical knowledge and skills, research suggests that engineering work is inherently sociotechnical. While sociotechnical thinking is a critical engineering skill, relatively little is understood about the nature of it or the different aspects comprised within it. To that end, this study addresses the following research question: What sociotechnical factors do engineering professionals consider in a collaborative scenario-based design activity? To answer this question, we conducted a qualitative study of engineering …

Where Is Dance In Education? Perspectives On The State Of Dance In Independent Schools Across The Midwest And How One School Community Fits Into The Larger Picture, Megan O'Toole

Master's Theses

The goal of this study was to examine the current state of dance education in independent K-12 schools in the Midwest region of the United States. The researcher developed four essential questions to guide the study:

Q1 Which schools had dance programming, and which schools did not have dance programming?

Q2 For the schools that had dance programming, what did the dance programs look like?

Q3 What factors influenced a school’s decision to include dance programming?

Q4 What factors influenced a school's decision to exclude dance programming?

A regional study was conducted to understand the trends associated with current dance …

The Impact Of Using The Visual, Auditory/Aural, Reading/Writing, And Kinesthetic (Vark) Model In Ballet Class: A Multifaceted Approach To Teaching Ballet Technique To Children Ages Nine To Twelve Years Old, Angelle Cain Wise

Master's Theses

The purpose of this study was to generate data that would measure the impact of the application of the Visual, Auditory/Aural, Reading/Writing, and Kinesthetic (VARK) Model learning styles on student comprehension and execution of movement in ballet class. The researcher sought to answer these questions:

Q1 Does teaching students’ using their preferred learning style help them understand the movement thoroughly?

Q2 Does teaching students’ using their preferred learning style help them execute the movement more precisely?

There was a total of twelve participants ages nine to twelve years old and two observers, whom were colleagues of the researcher. A set …

So You Think You Can Teach Dance?: Evaluating Effective Indicators And Assessments For Teaching Ballroom Dance In A High School Setting, Alyssa Arnold

Master's Theses

The purpose of this study was to determine the most effective learning indicators of ballroom dancing for high school dance educators in Utah’s DSD so that a later date, updated rubrics and assessments could be created and presented as artifacts to DSD’s Fine Arts Supervisor for future teachers. The researcher sought to answer the following questions:

Q1 How are teachers currently assessing students’ ballroom dancing?

Q2 What are the most important learning indicators to teachers?

Q3 Are the learning indicators in alignment with the required standards?

This research took place over two sessions held during students’ regularly held ballroom dance …

Navigating The Terrain: Sense Of Belonging In Geology Field Camps, Ezra J. Hammersfeld

Master's Theses

Social success and feelings of belonging within academic settings play critical roles in students’ continued engagement. Students who feel like they belong are more likely to perform better academically, create feelings of academic self-efficacy, and be more satisfied with their educational experiences (Aelenei et al. 2020; Baker 2013; Chen et al. 2020; Hoffman et al. 2021; Rosenthal et al. 2013; Smerdon 2002; Walton et al. 2012). I examine sense of belonging through analysis of secondary data focused on college student experiences in geology field camps. I approached the study using modified grounded theory (Charmaz 2014) in order to best capture …

Integrating Dance Into Early Childhood Education For Children With Developmental Disabilities: A Curriculum-Based Approach, Stephanie Stine

Master's Theses

The purpose of this thesis was to examine the effects of a structured dance curriculum on the social-emotional learning (SEL) and gross motor development of preschool-aged children with disabilities, specifically those ages three to five, as well as to explore teacher and specialist perceptions of dance as a tool for supporting children’s development. The study was conducted in collaboration with an early childhood education center. Twenty-eight children, ages three to five, participated in ten creative movement sessions designed to promote coordination, balance, and expressive engagement through themed lessons emphasizing emotional awareness and imaginative play.

Quantitative data were collected through observation …

N-Aryl Phenoxazines As Polymer Supported Photocatalysts, Mary Kathryn Hall

Master's Theses

In photosynthesis, the energy of sunlight is perfectly harnessed to facilitate the production of small molecules that are essential for plant life on earth. Inspired by this model of energy efficiency and simplicity, this work seeks to mimic that ability to use the energy in visible light to perform new and more efficient chemistries. Just like in photosynthesis, photocatalysts can act as chromophores absorbing light to excite electrons opening new pathways for previously untapped reactivity. Recent research has provided a wide range of small molecule reactions that are made possible or easier by the use of a photocatalyst. However, these …

Deterministic Methods To Improve The Field-Of-View For Direction Finding Using Sparse Digital Arrays, Nolan J. Egging

Master's Theses

Direction finding algorithms are used with digital phased arrays to determine the incoming angle of arrival (AoA) of an incident signal. These algorithms, and direction finding as a whole, have a wide range of civilian and military applications from radar, electronic reconnaissance, mobile communication, et cetera. However, for situations where the spacing between antenna elements needs to be large, gating lobes appear in the radiation pattern of analog arrays. This work demonstrates that for digital beamforming algorithms, the field of view (FoV) of a uniform linear digital array matches the grating lobe free range of a similarly spaced analog array. …

Marsanywhere: Dataset And Cross-View Diffusion Model For Satellite-To-Ground View Synthesis With Mars Data, Benjamin T. Hinchliff

Master's Theses

Satellite-to-ground view synthesis aims to create a realistic ground view image from a corresponding satellite view image. This is a well-studied problem for street level imagery, with good results being achieved by using modern image synthesis techniques such as diffusion models. However, despite the public availability of satellite and ground level imagery on Mars, these techniques have yet to be applied to the domain due to difficulties in collating and processing the data into a usable form. We address this deficiency by creating a dataset consisting of ground view panorama imagery from the Perseverance rover, along with associated satellite view …