Digital Commons Network^™

Morp: Monocular Orientation Regression Pipeline, Jacob Gunderson

Master's Theses

Orientation estimation of objects plays a pivotal role in robotics, self-driving cars, and augmented reality. Beyond mere position, accurately determining the orientation of objects is essential for constructing precise models of the physical world. While 2D object detection has made significant strides, the field of orientation estimation still faces several challenges. Our research addresses these hurdles by proposing an efficient pipeline which facilitates rapid creation of labeled training data and enables direct regression of object orientation from a single image. We start by creating a digital twin of a physical object using an iPhone, followed by generating synthetic images using …

An Analysis Of Indoor Air Quality At Cal Poly For Sensor Design, Isabella M. Santi

Master's Theses

Prior research has shown that indoor air quality (IAQ) impacts cognitive performance. At Cal Poly, many older buildings are unable to maintain appropriate IAQ because of their outdated ventilation systems and the increasing number of students in the rooms. This work analyzes the IAQ of different buildings at Cal Poly, with a focus on Building 20. Carbon dioxide, temperature, and relative humidity inside classrooms are collected using an integrated circuit sensor and a microcontroller. A total of 38 hours of data was collected, with 22 of those hours in Building 20 specifically. We find that unlike temperature and relative humidity, …

Jorge Ricardo Masetti: Journalist, Guerrilla, Cold Warrior, Brooks C. Martin Mr.

Master's Theses

The following thesis describes the life and activities of Jorge Ricardo Masetti, an Argentinian journalist who was assigned to interview Fidel Castro, leader of the Cuban Revolution against dictator Fulgencio Batista. Masetti was responsible for broadcasting interviews with Fidel Castro and Ernesto “Che” Guevara to the rest of Latin America for the first time, allowing people to understand what was happening in Cuba through the words of the Revolution’s leaders. Masetti returned to Cuba to found the first international Latin American news agency, Prensa Latina, which still exists today. However, ideological factionalism within Prensa Latina drove Masetti to resign in …

Using Plankton Edna To Estimate Whale Abundances Off The California Coast: Data Integration And Statistical Modeling, Katherine Chan

Master's Theses

Understanding marine mammal populations and how they are affected by human activity and ocean conditions is vital, especially in tracking population declines and monitoring endangered species. However, tracking marine mammal populations and their distribution is challenging due to difficulties in observation and costs. Using surrounding plankton environmental DNA (eDNA) has the potential to provide an indirect measure of monitoring cetacean abundances based on ecological associations. This project aims to apply statistical methods to assess the relationship of visual abundances of common species of baleen whales with amplicon sequence variants (ASV) of plankton eDNA samples from the NOAA-CalCOFI Ocean Genomics (NCOG) …

2-Tertbutylfuran At 550 And 700 K: A Multiplexed Photoionization Mass Spectrometric Investigation And Determination Of Cross Sections Of A Carbon- Bromine Bond And Various Brominated Organic Compounds, Ameyali Tapia

Master's Theses

This thesis presents the combustion study of 2-tertbutylfuran (2-TBF) in reaction with atomic oxygen (O(3P)). Data was collected at the Advanced Light Source (ALS) of the Lawrence Berkeley National Lab, using tunable vacuum ultraviolet radiation coupled with a multiplexed mass spectrometer to acquire the data. These data were taken at low pressures of 7 and 8 torr at temperatures of 550 K and 700 K, respectively. Primary products of the system were identified and characterized, while reaction pathways of the products are currently being studied to ensure thermodynamic feasibility. Branching fractions of the system were also calculated, to view the …

Effect Of Sex On The Accumulation Of Hepatic Mercury In Mallards Wintering In Louisiana, Latorya E. Mason

Master's Theses

The increase in mercury production through anthropogenic activities has led to a global crisis of mercury pollution that poses a significant threat to the health of both humans and wildlife. Aquatic ecosystems are especially at risk due to the creation of methylmercury, a toxic form of mercury, by sulfate-reducing bacteria in anoxic sediments and soils. Methylmercury enters the food chain where it bioaccumulates in individual organisms and then biomagnified with increasing trophic level. Aquatic birds are useful bioindicators of many pollutants, including mercury, due to their abundance and position in the food chain. Previous studies have primarily focused on mercury …

Buddhism In Thailand: Why Don’T The Youth Believe In Buddhism?, Nutnicha Teekatanasuk

Master's Theses

In Thailand, Buddhism is now known as a Buddhist country. Almost 96% of people in Thailand believe in Buddhism but it is declining every single day. Technology has made many people change their minds and not believe in Buddhism. Surprisingly, people who have been involved in Buddhism since they were born don’t believe, especially the young generation. The number of believers is declining every single day and many people have changed their minds and don’t believe in Buddhism. Surprisingly, people who have been involved in Buddhism since they were born don’t believe anymore. This might be because of Thai monks’ …

Financial Literacy And Aspirations: Experimental Evidence From Eastern Uganda, Ester Agasha

Master's Theses

Financial literacy and the cultivation of aspirations are pivotal in empowering individuals and fostering economic growth, particularly within disadvantaged com munities. Although prior research has extensively analyzed the individual effects of financial education and motivational interventions on economic behaviors, there is less clarity on how the synergy between them can collectively impact the socioe conomic status of individuals in developing economies, especially women. Through randomized control experiment(RCT), this study explored the effectiveness of two interventions; 1) a financial literacy digital gaming application and, 2) an aspirations intervention (a short video documentary and a follow-up curriculum) in not only enhancing financial …

Can Aspiration And Financial Literacy Interventions Relieve Internal Constraints? Evidence From Uganda And India, Veronika Divis

Master's Theses

Can aspiration and financial literacy interventions relieve internal constraints? We address this question through a novel experiment in Uganda and India, using 617 participants in 89 already existing borrowing groups of microfinance institutions. We carry out aspiration and financial literacy treatments as well as a combined treatment group which received both treatments to measure effects on aspirations, hope, agency, and pathway indices. Results show that receiving the aspirations treatment led to 0.34, 0.42, 0.18, and 0.40 standard deviation increases in aspirations, agency, pathways, and aspirational hope, respectively. The game and combined treatment groups also showed positive effects but lacked statistical …

Human Trafficking: Foreign National Adolescent Survivors In The United States, A Call To Expand Otip Eligibility Letters, Ailleene L. Maldonado

Master's Theses

The Office of Trafficking in Persons grants child eligibility letters to foreign national minors who have been confirmed victims of trafficking. These OTIP Eligibility Letters provide recipients with public benefits to the same extent as a refugee but do not grant protection from removal or pathways towards legal permanent residence. Additionally, many OTIP recipients have unaccompanied minor status in the United States. In order to capture the experience of OTIP recipients, this research explores existing literature on trafficking trauma and migration stressors/ trauma. Additionally, this research identifies international and national legal frameworks to define trafficking and acknowledge the responsibility that …

The Impact Of Index Based Livestock Insurance (Ibli) On Child Nutrition In Marsabit County, Kenya, Jackson Kadyampakeni

Master's Theses

The study uses six rounds of Index-Based Livestock Insurance (IBLI) panel surveys (2009 – 2015) for Northern Kenya’s Marsabit county to investigate the impact of IBLI on child nutrition and household food security. We employ Ordinary Least Squares (OLS) and Instrumental Variable (IV) regressions to account for potential endogeneity in IBLI uptake. The results indicate that while IBLI uptake significantly improves the intake of key nutrients such as Vitamin A, protein, iron, and fruits and vegetables, it does not translate into significant improvements in child nutrition status, as measured by Mid-Upper Arm Circumference (MUAC) z-scores. Significant negative effects of age …

The Diorama Of Coexistence Hypnagogia: The Liminal Space Between Dream And Reality, Yunseok Song

Master's Theses

The “Diorama of Coexistence” explores the imagined spaces where humans and animals share the same environments, blurring the lines between reality and fantasy. This year-long photographic project is inspired by my Christian faith and the Genesis creation narrative, where the world was originally harmonious and unspoiled. Through my work, I aim to reimagine the natural world, not as it is, but as it could be a place where animals and humans coexist peacefully.

In researching human development and its impact on nature, I found that animals are often confined to spaces like zoo, far from their natural habitats. This led …

Knowledge Production And The Unthinkable: Weaving Stories Of Art, Gender, And Land, Christin Huntsman

Master's Theses

Colonialism is deeply and violently embedded in Western knowledge formation—dominant power structures produce epistemes that uphold and perpetuate colonial narratives. This kind of knowledge production forecloses other possibilities. Western discourse of truth becomes universalized to the point that other worldviews, other knowledges that do not conform to hegemonic norms, are suppressed or silenced. This thesis examines three areas of hegemony and erasure: art, gender, and land. First, the history of art clearly marks a delineation between Western elitist artistic masterpieces and non-Western ethnographic artifacts. Eurocentrism of art in the academy determines what counts as art and how art is categorized. …

The Investigation Of The Reaction Of 2,3-Dimethylfuran With O(³P) And The Estimate Of The Photoionization Cross Section Of C-Cl And Absolute Photoionization Cross Sections Of Chlorinated Organic Compounds, Yilan Lori Chen

Master's Theses

The work presented in this thesis focuses on gas-phase reactions, which are fundamental for reducing greenhouse gas emissions and mitigating climate change. The experiments are performed at the Advanced Light Source (ALS) of Lawrence Berkeley National Laboratory, where there is a time-of-flight mass spectrometer coupled with tunable synchrotron radiation at Beamline 9.0.2 to collect high-quality data.

Chapter 1 details the background and purpose of each project, along with an overview of the origins of synchrotron radiation and time-of-flight mass spectrometry. The adaptation of biofuels is a way to minimize carbon emission and air pollutants, so research surrounding the reaction dynamics …

Downregulation Of Dax-1 Expression Via Mirna Overexpression As A Mechanism To Potentiate Breast Cancer, Nicholas C. Devito

Master's Theses

The orphan nuclear receptor DAX-1 (Dosage Sensitive Sex Reversal, Adrenal Hypoplasia Congenita, critical region on the X chromosome, gene 1) plays a key role in mammalian sex determination and steroidogenesis. In addition to these canonical examples, DAX-1 has been shown to play a contradictory role in cancer development. While DAX-1 is overexpressed in lung and prostate cancer, it is downregulated in breast cancer. One of the explanations for the paradoxical role of DAX-1 in cancer development could be microRNA (miRNA) dysregulation. After broadly surveying over 96 miRNAs historically upregulated in MCF7 breast cancer cells, we compared the expression of DAX-1 …

Exploring The Learning Outcome Of A Financial Literacy Game, Stanley Yip

Master's Theses

The financial literacy game was part of a financial literacy intervention that was conducted in Karnataka, India. Rural women participated in playing the game for four weeks. Using a fixed effects model at the subject level, the game was measured by three outcomes. These outcomes consist of the rate of type one errors, type two errors and the rate of going bankrupt that could occur for players when playing the financial literacy game. With type one errors, we find that adding one more unit on the return on investment (roi) would lead to about a 1.59 percent decrease in type …

Magpie Naheševehe: An Autoethnographic Study Of A Chief’S Son Reclaiming His Language, Quinn A. Magpie

Master's Theses

This paper is an autoethnographic study covering my journey to learn my heritage languages, Cheyenne and Arapaho. The purpose of this study is to give a personalized account of what studying my languages means to my Indigenous identity. Between the months of January and April of 2024, I studied my languages daily and documented the process. I then used Brayboy’s TribalCrit as my theoretical framework to elicit themes from my experience, many of which became a personal reflection on how my languages have become a new part of my life. This study also frames my father’s knowledge as essential towards …

Patterns And Potential Mechanisms Of Phenotypic Changes In Urban Small Mammals, Leslie Lopez

Master's Theses

Urbanization is an example of human induced rapid environmental change that can have wide-reaching ecological effects, including habitat destruction, fragmentation, and alteration of local climates. Effects of urbanization have been shown to impact wildlife, as disturbances resulting from urbanization can create novel environments and selective pressures that could lead to changes in morphology, physiology, or both. Small mammals such as rodents are an ecologically important set of wildlife species because they are a key prey item for several predators, hold strong influence over plants as a primary consumer, and some species carry and transmit major human and animal diseases. Previous …

Chemical Extraction Of Non-Exchangeable Radiocesium From Fukushima Soils Using Ion-Exchange And Selective Precipitation, Ian Danquah

Master's Theses

The Fukushima Daiichi Nuclear Power Plant meltdown in Japan resulted in the release of radionuclides into the environment. Soil in neighboring prefectures has been reported to be among the most contaminated. Since the event in 2011, a large volume of soil has been collected and stored in temporary storage facilities, awaiting decontamination. Numerous methods have been used and employed to remediate these soils, but most methods do not achieve the 90% removal target set by the Japanese government for safe disposal. Among all reported methods, the ion-exchange technique has been reported to be cost-efficient and effective. A study by Tamura …

Primate Social Behavior And Embodied Action, Maria Elbon

Master's Theses

The evolutionary origins of uniquely human cognitive processes remain poorly understood. Comparative analysis between humans and great apes can help identify derived characteristics and extrapolate ecological conditions leading to the evolution of specifically human cognitive abilities. It has been posited that the relatively large brain size of primates, in relation to body size, evolved in response to increasing social complexity and the accompanying cognitive demands placed on gregarious organisms that need to maintain cohesive, functional groups. Studies examining primate social behavior and cognition have focused on foundational abilities and cognitive capacities that are theorized to act as progenitors to uniquely …

Manufacturing Silicone In-House For The Creation Of Customized Neurovascular Blood Vessel Mimics, Jacob Wilbert Perisho

Master's Theses

The Tissue Engineering Lab at California Polytechnic State University San Luis Obispo focuses on creating tissue-engineered Blood Vessel Mimics (BVMs) designed for the preclinical testing of neurovascular devices. These BVMs are composed of silicone models, representing anatomically accurate neurovasculatures, that are sodded with vascular cell types and then cultivated in bioreactors (which maintain physiologic conditions). These silicone models are currently sourced externally from industry partners, so the primary goal of this thesis was to develop the means and methods for the Tissue Engineering Lab to manufacture silicone models in-house.

The first aim of this thesis was to develop and explore …

Recovery Of Nuclear Dna From Skeletal Remains Decomposed In Freshwater, Zoe L. Sikon

Master's Theses

This research compared freshwater and dry decomposition environments and their impact on DNA recovery from Sus scrofa domesticus(domestic pig) femora over a 3-month period. Prior to decomposition, initial cuttings were taken from "fresh" bone samples. Cuttings were then collected at 3-week intervals from waterlogged and dry bone samples. All samples were extracted using the vendor recommended protocol for the Applied Biosystems PrepFiler BTA extraction kit and an updated version of the same protocol, that substitutes Proteinase K with additional Dithiothreitol (DTT) (Thermo Fisher Scientific, 2012.). DNA quantitation was performed using pig-specific custom primer sets, with the QuantStudio 5 Real-Time …

The Role Of B Cell Activation State And Sex In Aryl Hydrocarbon Receptor Mediated Induction Of Chemokine Receptor 9 And Alpha4beta7 Expression In Vitro, Logan Bauerle

Master's Theses

Defense of mucosal tissues from microbial infection and allergy is reliant on continual production of antibodies. The aryl hydrocarbon receptor (AhR) is known to regulate B cell development and is associated with suppression of systemic humoral immunity. Recent attention has been paid to the role of the AhR in altering expression of cell adhesion molecules (CAMs). B cells express CAMs and chemokine receptors to migrate around the body for localized secretion of antibodies. AhR agonists promote B cell migration to the small intestine through upregulation of chemokine receptor 9 (CCR9) and integrin α₄β₇. Both the AhR …

Role Of Atp-Binding Cassette (Abc) Transporters As A Protector Of Testis Stem Cell Niche From Chemotherapy Drugs In Drosophila Melanogaster, Swagata Maity

Master's Theses

In chemotherapy treatments most tumor cells are destroyed by drugs, but some tumor cells are drug resistant, and these are known as cancer stem cells (CSCs). Normal adult stem cells are also chemo resistant. Therefore, investigation of normal stem cells can be useful to provide further knowledge of CSCs. One of the primary ways that CSCs achieve drug resistance is by drug efflux through transmembrane pumps called ATP-binding cassette (ABC) transporters. Many studies on ABC transporters have been performed in vitro using cultured cell lines, but very few studies have been performed on normal stem cell populations in vivo. Drosophila …

Potential Bioprospecting Within Vemons Of Rear-Fanged Snakes, Tanner Milbank Harvey

Master's Theses

Philodryas baroni (Baron’s Green Racer) and Trimorphodon lambda (Sonoran Lyre Snake) each belong to extensively studied genera of rear-fanged venomous snakes. Investigating the bioactivities and structural composition through methods not typically included in venomic workflows, which use homologous sequences and describe venoms by their constituent peptides, provides valuable insights into both the degree and extent to which venom diversity and complexity can be overlooked by many venomic workflows. This study explores the venom compositions of P. baroni and T. lambda and compares them to published toxins observed in opisthoglyphous snakes, specifically taxon-selective three-finger toxins and metalloprotease-dominated venoms.

This study underscores …

Effects Of Identity And Competency-Based Rejection And Acceptance On Online Versus Face To Face Reaffiliation Preferences In Adults, August Namuth

Master's Theses

Humans are social animals, resulting in notable sensitivity to experiences of acceptance and rejection. This study extends existing research by considering whether rejection or acceptance based on identity uniquely influences reaffiliation interests. Participants recalled either an inclusionary or exclusionary experience (or a control state), which would have been based on their competency or identity. Following this experience, they indicated their interest in participating in virtual and in-person social activities. I hypothesized that identity-based rejection would foster an interest in reaffiliation through online activities due to the greater availability to join likeminded groups online compared to in person. Conversely, I hypothesized …

Analysis Of Social Behavior Of The African Great Apes During Feeding And Non-Feeding Contexts, Jessica Hale

Master's Theses

The three African great apes, bonobos, chimpanzees and gorillas, despite similar habitats, differ considerably in their sociality and feeding ecology. There have been many studies that have investigated the feeding ecology and social behaviors of these species, but there is extremely limited literature available on how feeding ecology may have affected ape social evolution. Chimpanzees are frugivorous, which forces them into close proximity when foraging given the clumped nature of this resource. Bonobos and gorillas, however, are fallback food consumers, which allow them to spread out as they forage. This thesis project aims to test the hypothesis that differences in …

Clonal Growth And Trait Variation In The Colorado Front Range: The Influence Of Elevation And Ecosystem, Jordan Conley

Master's Theses

Amid global climate change, exploring adaptive strategies among alpine flora, particularly through clonal growth, becomes critical for biodiversity conservation. This study aims to explore the patterns of dominance and distributions among clonal species across environmental gradients in the Colorado Front Range, employing a trait-based comparative analysis to understand the adaptive strategies of alpine flora and their implications for conservation amid rapid climate change. We focused on two species, studying traits like lateral spread, bud count, and bulbil numbers. Advanced statistical methods such as Permutational Multivariate Analysis of Variance (PerMANOVA) and Multi-Response Permutation Procedures (MRPP) were used to evaluate community compositions …

Assessing The Independent Role Of Moral Foundations In Attitudes Toward Various Justifications For Abortion, Saba Shahid

Master's Theses

Although many states have legal frameworks that restrict abortion to certain situations, largely associated with health risks to the mother, child or both, other factors, such as financial stability, emotional readiness, and partner's presence, are not covered by existing laws, though they may be critical factors contributing to abortion decisions. To assess the role of these factors, participants (N= 302) were recruited online via Prolific Academic and randomly assigned on a between participants basis to view a single vignette that manipulated abortion justification category (financial, emotional, partner) and the presence/absence of justification. They reported the extent to which …

The Immune Contribution To Postpartum Remodeling, Jessica Caroline Ming

Master's Theses

Following parturition, the uterus must undergo significant changes in size and structure through a process called postpartum remodeling. This process is known to have both pro- and anti- inflammatory components. However, how various immune cells contribute to remodeling and the pathways that promote inflammation are not well understood. We hypothesize that immune cells that infiltrate the uterus postpartum modulate inflammation to promote postpartum remodeling. Our preliminary data suggests that inflammatory cell death may contribute to the inflammation present in the early postpartum period, and thus further studies will analyze caspase-1, gasdermin D, and IL-1β and IL-18. To analyze the immune …