Digital Commons Network^™

A Course On Advanced Real-Time Embedded Systems, Krista Round

Master's Theses

This thesis discusses the development of an advanced real-time embedded systems course offered at California Polytechnic State University, San Luis Obispo, which aims to prepare students to design modern complex real-time embedded systems. It describes the goals of the real-time embedded systems curriculum, which includes an introductory and advanced course. Finally, this paper discusses the challenges of creating a successful advanced real-time embedded systems course and proposes changes to the current advanced real-time embedded systems course in response to those challenges.

Efficacy Of Chemical And Biological Stump Treatments For The Control Of Heterobasidion Occidentale Infection Of California Abies Concolor, Adrian Luis Poloni

Master's Theses

We conducted an experimental evaluation of treatments to limit Heterobasidion occidentale infection of white fir (Abies concolor) stumps and wounds in California mixed conifer forests. We tested the efficacy of urea, borate, and a mixture of two locally collected Phlebiopsis gigantea strains in preventing pathogen colonization of fir stumps and separately, urea and borate as infection controls on experimental stem wounds. These were paired with a laboratory test on ~100 g wood blocks with and without a one-week delay between inoculation and treatment. Urea, borates, and Phlebiopsis treatments all significantly reduced the stump surface area that was colonized …

Design And Analysis Of N-Path Filter For Radio Frequencies, Nathan M. Bergen

Master's Theses

Due to the growth of wireless communication many communication frequencies have grown increasingly dense. This density requires higher Q-factor to receive only the signal of interest. With the rise of smaller integrated circuits previous solutions used for filtering have become viable again. This paper explores whether the N-path filter is viable in the modern day for radio frequency receiver purposes. A non-differential N-path filter was created by utilizing Cadence Virtuoso with a working center frequency range of 750MHz to 1GHz while using TSMC technology. The desired quality factor of over 1,000 was reached while maintaining a total area of 800 …

Legislative Language For Success, Sanjana Gundala

Master's Theses

Legislative committee meetings are an integral part of the lawmaking process for local and state bills. The testimony presented during these meetings is a large factor in the outcome of the proposed bill. This research uses Natural Language Processing and Machine Learning techniques to analyze testimonies from California Legislative committee meetings from 2015-2016 in order to identify what aspects of a testimony makes it successful. A testimony is considered successful if the alignment of the testimony matches the bill outcome (alignment is "For" and the bill passes or alignment is "Against" and the bill fails). The process of finding what …

Distribution And Ecological Function Of Pacific Lamprey In The San Luis Obispo Creek Watershed, Parker Kalan

Master's Theses

Pacific lamprey (Entosphenus tridentatus) is an endemic species to coastal watersheds along the Pacific Rim in North America and Asia. The species' geographic distribution is retracting and has not been mapped precisely, and the ability for the species to provide ecosystem services, such as water filtration, for supporting watershed management has not been tested. The San Luis Obispo Creek watershed, California, USA is at the southern end of Pacific lamprey’s retracting distribution, and the San Luis Obispo watershed is impacted by degraded water quality, making investigation of Pacific lamprey in the San Luis Obispo Creek watershed of direct …

Evaluation Of Automatic Text Summarization Using Synthetic Facts, Jaewook Ahn

Master's Theses

Automatic text summarization has achieved remarkable success with the development of deep neural networks and the availability of standardized benchmark datasets. It can generate fluent, human-like summaries. However, the unreliability of the existing evaluation metrics hinders its practical usage and slows down its progress. To address this issue, we propose an automatic reference-less text summarization evaluation system with dynamically generated synthetic facts. We hypothesize that if a system guarantees a summary that has all the facts that are 100% known in the synthetic document, it can provide natural interpretability and high feasibility in measuring factual consistency and comprehensiveness. To our …

An Introduction To Fröberg's Conjecture, Caroline Semmens

Master's Theses

The goal of this thesis is to make Fröberg's conjecture more accessible to the average math graduate student by building up the necessary background material to understand specific examples where Fröberg's conjecture is true.

Out-Of-Core Gpu Path Tracing On Large Instanced Scenes Via Geometry Streaming, Jeremy Berchtold

Master's Theses

We present a technique for out-of-core GPU path tracing of arbitrarily large scenes that is compatible with hardware-accelerated ray-tracing. Our technique improves upon previous works by subdividing the scene spatially into streamable chunks that are loaded using a priority system that maximizes ray throughput and minimizes GPU memory usage. This allows for arbitrarily large scaling of scene complexity. Our system required under 19 minutes to render a solid color version of Disney's Moana Island scene (39.3 million instances, 261.1 million unique quads, and 82.4 billion instanced quads at a resolution of 1024x429 and 1024spp on an RTX 5000 (24GB memory …

Bearing Fault Detection And Classification Using Artificial Neural Networks, Harnak Singh

Master's Theses

Bearings are the essential components of modern rotating machines. Bearing faults can cause severe machine damages or even breakdowns.

In recent years, artificial intelligence and deep learning have been successfully applied to fault detection. In this thesis, convolutional neural networks (CNN) are employed for bearing fault detection and classification. Computer simulations results demonstrate that the CNN based approach is advantageous over the conventional regression model, with an overall accuracy of 99.5%.

A Synthesis Of Classical Boundary Theorems, Lukas A. Dakhlia

Master's Theses

Bounded analytic functions on the open unit disk D = {z ∈ C | |z| < 1} are a fre-
quent area of study in complex function theory. While it is easy to understand the
behavior of analytic functions on sequences with limit points inside D, the theory
becomes much more complicated as sequences converge to the boundary, ∂D. In this
thesis, we will explore boundary theorems, which can guarantee specific desired be-
havior of these analytic functions. The thesis describes an elementary approach to
proving Fatou’s Non-Tangential Limit Theorem, as well as proofs and discussion of
the subsequent classical boundary theorems for specific points, …

Seed Longevity And Climatic Tolerance Of San Joaquin Wooly-Threads (Monolopia Congdonii; Asteraceae) An Endangered Plant From The San Joaquin Desert, California, Paul Excoffier

Master's Theses

San Joaquin wooly-threads (Monolopia congdonii; Asteraceae) is a federally-listed, endangered annual plant species from the desert areas of the San Joaquin Valley. Its limited range puts it at risk of extinction if the climate changes in such a way as to hinder its growth and reproduction. The primary aims of the study were to 1) determine how long-lived the seeds of the M. congdonii are, a key determinant of survival of desert annual plant populations through long droughts and 2) determine how severely hotter, drier conditions impact the ability of emerged plants to grow and reproduce. Secondarily, I …

Strainer: State Transcript Rating For Informed News Entity Retrieval, Thomas M. Gerrity

Master's Theses

Over the past two decades there has been a rapid decline in public oversight of state and local governments. From 2003 to 2014, the number of journalists assigned to cover the proceedings in state houses has declined by more than 30\%. During the same time period, non-profit projects such as Digital Democracy sought to collect and store legislative bill and hearing information on behalf of the public. More recently, AI4Reporters, an offshoot of Digital Democracy, seeks to actively summarize interesting legislative data.

This thesis presents STRAINER, a parallel project with AI4Reporters, as an active data retrieval and filtering system for …

The Influence Of Happiness On The Perception Of Ingroup And Outgroup Stereotypes, Diego R. Gómez

Master's Theses

An important social issue that influences judgments between ingroups and outgroups is how moods influence stereotype judgments. For instance, research on moods has provided evidence that happiness increases stereotype judgments. However, research has not considered the impact of individuals’ ingroup membership and how it may moderate these effects. The purpose of this study was to explore the potential moderating role that ingroup membership may have on the effects of happiness on stereotype judgments. University student participants in a happy or neutral induced mood completed a disciplinary task to assess guilt of either a Hispanic or non-Hispanic suspect of an assault …

Unmasking Medical Fake News Using Machine Learning Techniques, Garima Chaphekar

Master's Theses

Fake news has always been a critical and challenging problem in the informationenvironment. The propagation of false news is a serious concern, especially in medical information, which can have dangerous and potentially deadly consequences. With the tsunami of online misinformation, it is crucial to fight fake medical news. In this study, we use machine learning techniques to help detect fake news related to diseases, including COVID-19, Ebola, Zika, SARS, Cancer, and Polio. To facilitate research in this space, we create a new medical dataset named MedHub. MedHub has records from two publicly available datasets on COVID and manually curated facts …

Exploring Shared Book Reading Among Mexican And Dominican Parent-Child Dyads, Maria Flores Lopez

Master's Theses

Using an ethnically diverse sample of Mexican and Dominican families from the NewYork metro area, the present study investigated the behaviors of parents and their three-yearold children, during shared book reading (SBR). The aspect of child behavior that was investigated was engagement, which was assessed by observations of children’s attentiveness and verbal participation during the reading activity. Children within this sample were highly engaged, with most demonstrating active engagement, the highest level of engagement in this study. When looking at the behaviors of parents, the use of two sets of strategies were investigated: interactive book reading strategies and language use. …

The Influence Of Cultural Stigma On Perceptions Of Mental Illness, Rakshitha Mohankumar

Master's Theses

The stigma of mental illness can often lead to the afflicted individual not receiving the professional help they need and thereby worsening their condition, which has serious consequences both for themselves and their loved ones. Moreover, stigma surrounding mental illness varies from culture to culture. This research study highlighted the significance of studying stigma and long-term coping with a loved one’s mental health issues across cultures. Differences in perceptions of mental health based on the type of culture and (in)experience of growing up with someone who had mental health issues were tested. I predicted that there were main effects of …

Association Between Stone Fruit Intake And Markers Of Cardiovascular Disease Risk Among United States Adults: Nhanes 2017-2018, Lasya S. Shah

Master's Theses

Cardiovascular Disease (CVD) is the most common cause of mortality in the world affecting people from all backgrounds. There is abundant evidence supporting diet affecting the risk for CVD. The consumption of fruits and vegetables is inversely related to CVD risk factors, likely due to their content of phenolic compounds. Although stone fruits contain high quantities of phenolic compounds, it remains unclear if their intake is associated with CVD risk. In this study, data from the National Health and Nutrition Examination Survey 2017-2018 were used to estimate the consumption level of stone fruits and whether it was associated with CVD …

Smartrec - A Smart Conversational Recommendation System Using Semantic Knowledge Graphs, Sudha Vijayakumar

Master's Theses

CRS strives to return the most relevant recommendations to users through a multi-turn interactive conversation. The Covid-19 pandemic has undoubtedly accelerated the pace of adoption of conversational AI systems by many online platforms needing to provide highly available customer support. This ongoing demand calls for the need to implement more generic and efficient conversational agents and recommendation engines that can provide customers with the required information at every stage of the user’s interaction with the e-commerce platform. This study presents a Smart Conversational AI-based recommendation system - SMARTREC, which enables a multi-turn conversation with the user to understand the context …

Diet Quality, Diet Motives, And Nutrition Literacy Of Vegans, Vegetarians, And Semi-Vegetarians, Sapna J. Peruvemba

Master's Theses

Individuals consuming plant-based diets have shown favorable dietary behaviors and diet quality. However, differences in diet quality considering motivations to adopt plant-based (vegan, vegetarian, and semi-vegetarian) diets and nutrition literacy, are not well known. The primary objective of this study was to assess diet quality, diet motives and nutrition literacy in vegans, vegetarians, and semi-vegetarians. The secondary objective was to investigate the association between diet motives and dietary quality. In this cross-sectional study, 223 participants completed an online survey and food frequency questionnaire. The study used the Healthy Eating Index-2015 to measure dietary quality, the Food Choice Questionnaire to measure …

Buried Treasure In San Francisco’S Golden Gate Park: Changing Tastes In The Twentieth Century As Seen Through The Music Of The Golden Gate Park Concert Band, Nathaniel L. Pergamit

Master's Theses

Buried deep under the Spreckels Temple of music, the bandstand In San Francisco’s Golden Gate Park, lay a treasure trove of sheet music and concert programs belonging to the Golden Gate Park Concert Band. This band, which has delighted audiences and park-goers in San Francisco for 140 years, had over a thousand scores and programs each waiting to be archived and preserved. From documents marked “Property of the WPA,” to handwritten letters from composers, to photographs of since forgotten events, these newly archived materials detail historic trends that shed light on San Francisco’s unique civic culture. Along with conventional critical …

The Modern-Day Effect Of Holc Redlining On Neighborhood Development, Liubov Ivashov

Master's Theses

Racial segregation, which happened more than one hundred years ago in the U.S., is a fundamental cause of economic inequality for people living in historically segregated neighborhoods today. Redlining was one form of federal policy that forced to separate communities by race even more after the Great Depression. The Home Owners Loan Corporation (HOLC) maps are widely used in economic research papers as one of the most comprehensive sources of data available to measure the effect of residential segregation. In this paper, using the Historical Redline Score (HRS) method, the author measured the association between modern-day population distribution, rent prices, …

Sexual And Reproductive Health Care For Undocumented Californians: Universal Health Care & Reproductive Justice, Josephine Emily Roberts

Master's Theses

Universal Health Care can hardly be achieved if the Sexual Reproductive Health needs of a population are not met. In other words, Sexual and Reproductive Health and Universal Health Care are mutually reinforcing, and the state of California should consider this when implementing Medi-Cal health care for all Undocumented Californians. In 2016, California implemented an extension of Medi-Cal treatment to undocumented children up to 26 years of age. Comparable to the United States Federal Medicaid program aimed to help cut health care costs for low-income and vulnerable populations, Medi-Cal offers some coverage for emergency medical services to undocumented individuals of …

Impact Of Climate Variability On Child Nutrition In Ethiopia, Juan S. Gomez

Master's Theses

Changes in precipitation and temperature due to climate change have caused a shortage in food productivity leading to an increase in malnutrition outcomes, especially among children in developing countries that are more susceptible to undernutrition outcomes. This study contributes to existing literature studying the impact of climate variability measured by temperature, precipitation, and vegetation index on wasting. Wasting is measured by the weight for height score during the main growing season (Meher) using Demographic and Health Surveys data for five different periods in Ethiopia. Results suggest that lower NDVI outcomes are associated with an increase in the risk of acute …

Formal And Informal Styles Of Clothing In The Assessment Of Female Political Candidates, Erma Kurtovic

Master's Theses

Abstract: This study will research the importance of dress code of female candidates on the confidence in leadership.The research question is: How Important is the Formality of Dress Code in the Assessment of Leadership of Female Political Candidates? It is addressed by using an experimental design carried out in India and the United States, using Qualtrics and Amazon Mechanical Turk. This research gathered 400 responses, 200 from each country. Primary data collection was used, with the implementation of two experiments. The experimental design of the two experiments consisted of two conditions, one in which the main political candidate is dressed …

Using Machine Learning To Analyze Children’S Drawings As Indicators Of Mental Well-Being, Nicholas R. Lawrie

Master's Theses

Human figure drawings are a well-studied diagnostic tool for emotional distress in children. Cleft lip/palate is one of the most common birth defects in the world, and has been shown to negatively impact emotional well-being in childhood which can have negative economic consequences in adulthood. Utilizing a dataset of human figure drawings from children in India and survey data on mental health, this paper will assess the impact of corrective surgery on mental health outcomes, as well as assess the validity of the drawing emotional indicators themselves. The results indicate that while the emotional indicators may not be valid in …

It Could Be “Win-Win”: The Us-China Bilateral Relationship, Xiaying Huang

Master's Theses

The bilateral relationship between the United States and China is crucial for international relations since these two great power states will influence the global economy, politics, and security. However, the US-China bilateral relationship has not always been stable and peaceful. The trade war was current issue to make the relationship between the two countries tenser and tenser. On the US side, the trade war was thought to promote domestic production, but the reality was the opposite; the trade war just broke the bilateral relationship and provided no long-term advantages to the US economy. In March 2022, the U.S. restores tariffs …

Mahalaya: Building Community In The Filipinx Diaspora Through Solidarity Journalism, Casey Ticsay

Master's Theses

Unethical approaches to storytelling in professional journalism continue to shape public discourse around the diverse experiences of Asians and Asian Americans. This paper analyzes the origins and impact of ethnic news media, specifically the rise of Filipino and Filipino American press in the United States, and the ways journalists of color continue to challenge traditional practices of professional journalism that perpetuate anti-Blackness and maintain white supremacy. Filipino and Filipino American newspapers in the early twentieth century provide historical insight into the issues, debates, and conversations transpiring at the time and highlight the community’s ongoing response to the misrepresentations of their …

Heterogeneous Effects In Matching Grants, Kaustri Bhattacharyya

Master's Theses

The main objective of this thesis is to apply causal forest to identify the variables responsible for the treatment of heterogeneity without making any prior assumptions. This research is based on a paper based on a natural field experiment and explored how matching grants affect charitable giving.

The Role Of African Non-National Storytelling In Challenging Xenophobic Discourses In Post-Apartheid South Africa, Kelly Allyn Cruchett

Master's Theses

A growing body of literature on xenophobic violence in post-apartheid South Africa has shown that this form of violence targeted towards African non-nationals is closely linked to a xenophobic discourse of national chauvinism that has been deployed by powerful institutions since the nation’s independence. This capstone project seeks to highlight the role that non-national storytelling plays in addressing the issue of anti-African xenophobia and xenophobic violence in post-apartheid South Africa by challenging the discourses that contribute to it. Through the analysis of a NGO’s youth summit that revolved around the stories of four non-national speakers, this study examines the impact …

Inaccessible Interpolated Imagery: How Coffee Farmers In The State Of Chiapas Might Access Political Economic Opportunity Through Representation, Paolo Fiann Bicchieri

Master's Theses

Here is a useful parable to boil down the idea of this project and set the tone: when one goes to the bar to tell a story about a fight at the bar, they would never venture to place themselves as the hero of the brawl, taking out three drunkards in a single punch, unless they were really in the bar, at that time, fighting a good fight. One would never do this as the bartender, locals, and regulars would all know if this were the case or not. Yet transnational corporations, governments, and even consumers do this all the …