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Hydrothermal Fluid Transport Pathways Along Fractures And Veins At Brothers Volcano, Southern Kermadec Arc, Robert Atnip

Master's Theses

Hydrothermal fluid flow in fractures and veins is a key component in the mineralization of economic metals within calderas. But there are several methods by which fractures can form. Regional extension, episodic caldera collapse, and fluid overpressure all have the potential to create brittle features. Current studies focus on the formation of fractures and veins by these methods, but do not focus on the preferred movement of hydrothermal fluids through brittle features, nor which features are more dominant in active hydrothermal systems. This thesis introduces multiple studies to better understand which method of fracture creation dominates Brothers volcano. Data from …

Negotiating National Identity: A Study Of Nationalist Rhetoric During The British Voluntary Recruiting Movement, 1914-1916, Emily Cloys

Master's Theses

Within weeks of the outbreak of World War I, the British Army faced a critical demand for more soldiers to replenish its casualties and to compete with the mass conscript armies of the Central Powers. Hesitant to break from its tradition of non-conscription, the British government relied on a period of voluntary recruitment from 1914 to 1916, resulting in the enlistment of nearly 2.5 million soldiers.

This thesis examines the period of British voluntary recruitment during World War I by exploring how conceptions of British national identity served as a technique of persuasion and as a catalyst for individual enlistment. …

A Meta-Analysis Of Implementation Planning: The Effects On Teachers’ Treatment Adherence And Quality When Implementing Behavioral Interventions, Taylor Ben

Master's Theses

The purpose of the current study was to systematically review the literature investigating the use of Implementation Planning (IP) as a consultation method to improve teacher’s treatment integrity when implementing behavioral interventions. IP consultation is hypothesized to improve treatment implementation adherence as well as the quality of implementation related to the chosen behavior intervention(s). A secondary hypothesis of this review was that cooccurring student behavior would improve as teachers’ level of treatment integrity improved. An initial literature search produced 48 articles from which four studies met the inclusion criteria. Thus, all included studies were single case designs, used IP as …

Estimation Of Mortality Rates For The Gulf Menhaden Stock And Reference Point Implementation For The Fishery, Catherine Wilhelm

Master's Theses

The Gulf menhaden stock is the target of a large commercial fishery in the Gulf of Mexico. To address the needs of both the stock and fishery, I performed two studies. I first addressed the natural mortality rates currently used in the Gulf menhaden stock assessment. To update these rates, I used data from a tagging study conducted from 1970 to 1988. Adult and juvenile menhaden were tagged, released, and recovered in fish processing plants. To evaluate the data, I built a Bayesian model using the negative binomial distribution to estimate natural mortality, catchability, and the overdispersion factor parameters. I …

Disruption Of Play Behavior Influences Development Of Caution In Juvenile Ground Squirrels, William Ryan

Master's Theses

Play behavior is ubiquitous among young mammals and has a variety of important influences on early development. I evaluated possible influences of social play behavior on the development of temperament in juvenile Belding’s ground squirrels (Urocitellus beldingi), using the caution/boldness spectrum as a measure of temperament. I disrupted the play behavior of juvenile U. beldingi by walking toward juveniles at play until the play interactions stopped. I used undisrupted juveniles and juveniles whose non-play behavior was disrupted at regular intervals as controls. Caution was measured with behavioral tests during which a human intruder walked toward a squirrel and recorded the …

Evaluation Of Raman Microspectroscopy And Hyperspectral Imaging As A Screening Tool To Determine Optimal Sampling Sites For Dna Recovery From Human Skeletal Remains, Kathleen M. Smith

Master's Theses

Numerous challenges exist with forensic genetic testing of human skeletal remains due to diagenesis patterns in bone microstructure, DNA degradation, and the presence of PCR inhibitors. Diagenesis is the microscopic breakdown of the bone matrix, which consists primarily of mineralized calcium hydroxyapatite and collagen. The process of diagenesis occurs in a heterogeneous, non-uniform manner along the diaphysis of a long bone, and determining the region with the most intact bone microstructure is not possible with the naked eye. Therefore, taking cuttings from the diaphysis for DNA testing is somewhat of a “blind” process, and decades of research and casework have …

Brazilian Camming: The Monetization Of Intimacy In Online Sex Work, Fernanda Veiverberg

Master's Theses

This thesis addresses a form of online feminized labor in Brazil, which employs digital technology to relieve the urges for intimacy and monetary insecurity. Camming is a genre of online sex work, in which cam models sell their body image and attention online through computer-mediated interactions. It constitutes a profitable activity that employs body performance without physical contact between model and client, typical in most categories of sex work such as prostitution, and where the clients are not mere spectators as within the pornography industry because camming requires authenticity and communication. For that, I explored three conceptual spheres that combined …

Development Of Mirror Flexures For Use In The Muvi Instrument, Colin W. Harrop

Master's Theses

The Miniaturized Ultraviolet Imager (MUVI), is a compact wide field UV imaging instrument in development at UC Berkeley Space Sciences Laboratory and Cal Poly, San Luis Obispo. MUVI is designed to fit in a 2U CubeSat form factor and provide wide field, high resolution images of the ionosphere at far ultraviolet wavelengths. This thesis details the design and analyses of MUVI’s deployable cover mirror mounting flexures. Three different flexure geometries were evaluated, an optimal candidate was determined based on a number of criteria including isolation of vibration and stress to the mirrors, manufacturability and cost. The design of the flexure …

The Role Of Emotion Regulation And Alexithymia In The Relationship Between Sleep And Social Functioning, Lillian A. Hammer

Master's Theses

Poor sleep quality has been tied to worse social functioning outcomes, including greater loneliness, fewer social interactions, and lower social integration. While the relationship between sleep quality and social functioning has been investigated, other factors likely play a role in this complex relationship. Specifically, alexithymia and the use of different emotion regulation strategies may serve as moderators in the relationship between sleep and social functioning. Alexithymia and emotion regulation strategies are both related to sleep quality and social functioning. Yet, the impact of these emotional processes on the relationship between sleep and social functioning remains unexplored. Data for this study …

Gender Differences In Personality Dysfunction And Aggression In A Sample Of At-Risk Youth, Chloe O'Dell

Master's Theses

Youth with antisocial and borderline traits in adolescence have been found more likely to commit violence and experience negative outcomes later in life. There is evidence for gender differences in the manifestations of dysfunctional personality features (antisocial and borderline traits) and functions of aggression, but little research has sought to assess unique gender differences that may help unravel the sequelae of personality dysfunction in youth. Accordingly, this exploratory study examines gender differences in associations between antisocial features, borderline features, and proactive and reactive functions of aggression in a sample of at-risk youth. Four hundred and sixty-four adolescents (M_age = …

The Relations Between Rumination, Thought Control, And Suicidal Thinking, Morgan Buerke

Master's Theses

Despite the far-reaching impact of suicide on our communities, we need more research to understand how suicidal thoughts develop, and what leads to their maintenance. As suggested by the depression distress-amplification model (Capron et al., 2013), emotion-regulation strategies such as rumination may cause or worsen suicidal ideation by amplifying the distress associated with negative thoughts. In addition, ruminative thoughts are often described as difficult to control, which may lead people to think about suicide as an escape from these uncontrollable thoughts. The current study examined the relationship between certain forms of rumination (i.e., brooding, reflection, anger rumination, and suicidal rumination) …

Benthic Habitat Mapping Of Mountain Top Bank Within The Northern Gulf Of Mexico Through Integrated Geophysical And Visual Data Analysis, Bethany Pertain

Master's Theses

Mesophotic coral ecosystems (MCEs) are among the seafloor ecosystems that have been poorly studied throughout the world’s oceans, but they are a vital and diverse ecosystem that should be prioritized for future mapping and ecological studies. Priority should be given to them because they possess natural, social, and economic values, and face a variety of threats, all of which, if not better understood will result in the loss of this unique ecosystem. Insights into these ecosystems, among other deep-sea environments, are lacking due to difficulty accessing them, inherent lag between data collection by an autonomous system and observation by a …

Antimicrobial Edible Coating Composed Of Chitosan Polyvinyl Alcohol And Zinc-Coated Halloysite Nanotubes, Sindhu Datla

Master's Theses

Changes in everyday activities like food packaging are required due to the global shift from a linear to a circular economy. Therefore, industrial, and institutional research centers are interested in using biodegradable materials like polyvinyl alcohol and natural raw materials like chitosan to develop novel food packaging films. Edible coating materials have been extensively researched to extend the shelf life of fruits and vegetables and reduce the risk of ingesting chemical reagents. Chitosan (CH) is widely used as a natural preservative for fruits and vegetables, but its poor mechanical, and water resistance limits its use. To improve the properties of …

Reinforcement Learning Framework For The Unreal Engine, Justin B. Wheeler

Master's Theses

This dissertation addresses the need for using machine learning-based methods rather than traditional rule-based methods for controlling non-playable characters (NPCs). The goal of the Reinforcement Learning Framework for the Unreal Engine is to enable game development studios to create, train, and more easily implement smarter, more compelling AI characters in major video game releases. The framework contains three distinct software libraries: an Unreal Engine reinforcement learning library whose purpose is to enable Unreal Engine levels to act as reinforcement learning environments, a python library which provides convenient abstractions and implementations to the reinforcement learning process, and a flexible connection system …

Modeling Daily Fantasy Basketball, Martin Jiang

Master's Theses

Daily fantasy basketball presents interesting problems to researchers due to the extensive amounts of data that needs to be explored when trying to predict player performance. A large amount of this data can be noisy due to the variance within the sport of basketball. Because of this, a high degree of skill is required to consistently win in daily fantasy basketball contests. On any given day, users are challenged to predict how players will perform and create a lineup of the eight best players under fixed salary and positional requirements. In this thesis, we present a tool to assist daily …

Shelfaware: Accelerating Collaborative Awareness With Shelf Crdt, John C. Waidhofer

Master's Theses

Collaboration has become a key feature of modern software, allowing teams to work together effectively in real-time while in different locations. In order for a user to communicate their intention to several distributed peers, computing devices must exchange high-frequency updates with transient metadata like mouse position, text range highlights, and temporary comments. Current peer-to-peer awareness solutions have high time and space complexity due to the ever-expanding logs that each client must maintain in order to ensure robust collaboration in eventually consistent environments. This paper proposes an awareness Conflict-Free Replicated Data Type (CRDT) library that provides the tooling to support an …

Lichens Of Ultramafic Rocks: A Multidisciplinary Approach To Understanding The Ecology Of An Understudied Organism In A Well-Studied System, Michael Mulroy

Master's Theses

Lichens are among the most prominent and successful life forms of metal-rich habitats, including ultramafic rocks and soils; however, research on lichens of ultramafic habitats is limited, especially on the North American continent. A review of the published literature on lichens of ultramafic substrates in North America yielded a total of 437 lichen species reported from ultramafic rocks and soils. Lichen assemblages of ultramafic substrates vary in composition and are dominated by acidophytic (low pH preferring) taxa with a minor, but consistent, basiphytic (high pH preferring) component. Species lists from ultramafic habitats in different geographic regions varied widely, suggesting that …

Efficacy Of Biofungicides And Their Application Timing In Managing Botrytis Bunch Rot Of Wine Grape, Marco A. Fernandez

Master's Theses

Botrytis bunch rot (BBR), caused by Botrytis cinerea, leads to a severe reduction of quality and yield in wine grapes (Vitis vinifera). A field study to determine the best BBR management strategy was conducted in 2021 and 2022 in Santa Maria, CA using ‘Chardonnay’, a BBR susceptible wine grape cultivar. Three biofungicides were evaluated: Actinovate® AG, Regalia®, and Serenade® ASO. The efficacy of these three biofungicides was compared with fungicide programs composed of commonly used synthetic fungicide(s) or combinations of commonly used synthetic and biofungicides. For each biofungicide, three application timings were evaluated: 7-day interval, 14-day interval, and by an …

Heat Flux Dynamics And Seasonal Variability In Morro Bay, California, Mikaela Romanini

Master's Theses

There is a growing need to better understand the dynamics of small and medium Mediterranean low-inflow estuaries (LIEs), which is addressed here by characterizing a heat budget and associated heat transfer processes. A one-dimensional deterministic model was developed from the advection-diffusion equation and applied to Morro Bay, CA using 15-minute water property (temperature, salinity, pressure) and meteorological (wind speed and direction, air temperature, relative humidity, air pressure, irradiance) data collected over a two-year period (2020 – 2021). Seasonal variability is observed in meteorological components, water temperature, and salinity. There is strong seasonal variability in head-mouth temperature and salinity differences. Temperature …

Time-Domain Evaluation Of Atmospheric Ducting Effects On X-Band Propagation Over Water, Jack A. Gallegos

Master's Theses

The marine atmospheric boundary layer (MABL) is the region of atmosphere that interacts with the ocean surface. The atmospheric variability (i.e. temperature and relative humidity) in this region can result in rapid changes in the refractive index with increasing height from the sea surface. The complex region can result in non-standard propagation of electromagnetic (EM) waves beyond the horizon under atmospheric ducting conditions. However, when ducting layers are not present, EM waves are limited to line-of-sight transmission. Atmospheric ducting research is typically conducted using radio frequencies in the X-band (around 8-12 GHz) due to its impact on performance of marine …

The Implications Of Sexual Assault Awareness On Sexual Overperception Bias, Zach Buckner

Master's Theses

Heterogeneity has recently emerged in research investigating men’s overperceptions of women’s sexual receptivity, namely that such overperceptions are less robust than previously considered. Various social movements (e.g., #MeToo) could be a modern-day contextual factor that has reduced men’s tendency toward overperception. In this study, participants viewed hypothetical information regarding sexual assault perpetration committed by men or women (or control information) before rating opposite-sex targets on perceived sexual interest in them and reporting individual differences in just and dangerous world. The results indicate that individuals who hold stronger beliefs in an unjust world are more sensitive to perceived threats from potential …

I Was Looking For God: A Study Of Wehrmacht Personnel And Their Personal Relationships With Religion, Christopher Bishop

Master's Theses

The Wehrmacht was Germany’s fighting force in the field during World War II. Its brutality and discriminatory practices rivaled that of the Nazi paramilitary and police units dispatched alongside them in newly conquered areas during this conflict. Coming from a society that was not at all unfamiliar with Christianity, some within the Wehrmacht related to Christianity in some form and attempted to use it to either justify actions or make sense of the world around them.

While considerable scholarship exists on the Nazi Party’s relationship to Christianity as a convenient propaganda tool for both soldier and civilian alike, the historiography …

Simple Open-Source Formal Verification Of Industrial Programs, Christopher Disney Peterson

Master's Theses

Industrial programs written on Programmable Logic Controllers (PLCs) have become an essential component of many modern industries, including automotive, aerospace, manufacturing, infrastructure, and even amusement parks. As these safety-critical systems become larger and more complex, ensuring their continuous error-free operation has become a significant and important challenge. Formal methods are a potential solution to this issue but have traditionally required substantial time and expertise to deploy. This usability issue is compounded by the fact that PLCs are highly proprietary and have substantial licensing costs, making it difficult to learn about or deploy formal methods on them.

This thesis presents the …

The Vertic Clay Flora Of The San Joaquin Desert: Niche, Competition & Floral Mosaics On A Novel Substrate, Emma R. Fryer

Master's Theses

Plant communities that occur on edaphically heterogeneous landscapes are ideal systems for exploring questions of niche and community assembly. Species with affinity for harsh substrates often have well-defined edaphic niches and are ideal models for testing ecological and evolutionary theory. While plants on substrates such as serpentine and gypsum have received much attention, those on other harsh substrates, including on vertic clay soils, have gone unstudied. Vertic clay soils are both chemically and physically challenging to plant establishment and productivity. Plant communities associated with vertic clay soils of the San Joaquin Desert appear to have a distinctive mosaic pattern of …

Psf Sampling In Fluorescence Image Deconvolution, Eric A. Inman

Master's Theses

All microscope imaging is largely affected by inherent resolution limitations because of out-of-focus light and diffraction effects. The traditional approach to restoring the image resolution is to use a deconvolution algorithm to “invert” the effect of convolving the volume with the point spread function. However, these algorithms fall short in several areas such as noise amplification and stopping criterion. In this paper, we try to reconstruct an explicit volumetric representation of the fluorescence density in the sample and fit a neural network to the target z-stack to properly minimize a reconstruction cost function for an optimal result. Additionally, we do …

Trajectory-Tracking Control Of The Ball-And-Plate System, Dominic E. Riccoboni

Master's Theses

The Mechatronics group in the Mechanical Engineering department of Cal Poly is interested in creating a demonstration of a ball-and-plate trajectory tracking controller on hardware. The display piece will serve to inspire engineering students to pursue Mechatronics and control theory as an area of study. The ball-and-plate system is open-loop unstable, underactuated, and has complicated, nonlinear equations of motion. These features present substantial challenges for control - especially if the objective is trajectory tracking. Because the system is underactuated, common nonlinear trajectory tracking control techniques are ineffective. This thesis lays out a theoretical foundation for controlling the hardware.

Several important …

Our Pearls Matter: Pcos Through The Lens Of Women Of Color And White Women, Kimberley Sheri Miles

Master's Theses

The prevalence of PCOS is increasing and due to the associated health complications, it is important to understand how higher-risk populations (women of color) cope with said condition. Analyzing current symptom management and treatment could help develop more practical resources and treatment strategies to help improve healthcare expectations and quality of life.

Ten women aged 22-38 with PCOS participated in comprehensive individual interviews with goal-oriented, semi-structured questions. A 27-question survey was also completed. Sampling was continued until data saturation was reached. The data was analyzed using the grounded theory technique which codes emergent themes with keywords and phrases which ultimately …

Finding The Middle Zone; Redefining Spirituality Through Contemporary American Literature, Mickey Mcpoland

Master's Theses

In this essay, I investigate the intersection of post-postmodern literature and postsecular thought. I examine Jonathan Franzen’s novel Crossroads (2022) as a means to examine a religious conception of goodness and how goodness becomes rooted in what we worship. I also look to Infinite Jest and “Good People” by David Foster Wallace. The latter illuminates the conflict between traditional forms of worship and contemporary calls to worship one’s own desires, which results in stagnation, frigidity, and indecisiveness. Characters follow their internal compass, which leads them only further away from a sense of stability. Franzen’s work shows what replaces traditional religious …

Characterizing The Developmental Role Of Autism-Risk Gene Adnp In A Zebrafish Model For Autism, Vaishnavi Balaji

Master's Theses

Autism spectrum disorder is a complex neurodevelopmental disorder characterized by impaired social

skills, restricted/ repetitive behaviors, and developmental delay. The disease has a genetic component,

and mutations in the adnp gene have been found in 0.17% of non-inherited genetic cases of the disorder. The exact molecular mechanism by which adnp is involved in the development of autism is not known. This study aimed to use zebrafish to determine the phenotypic effects of adnp mutations using two adnp paralogs- adnpA and adnpB to understand the underlying mechanism. Novel zygotic adnp double heterozygous mutants (A+/- B+/-) were previously generated using …

Building Strength Versus Getting Lean: An Analysis Of The Gendered Nature Of Fitness In Crossfit, Barre, And Personal Training, Margaret M. Jones

Master's Theses

Like many industries in contemporary society, the fitness sector is heavily gendered, andthus needs to be examined as a sector that both creates and reinforces gendered bodies. Building on previous single-method studies, I utilized a multi-methods approach of ethnography and interviews to analyze organizational and individual experiences with gender and fitness. Using West and Zimmerman’s concept of “doing gender,” I analyzed fitness organizations as a setting where gender and inequality are actively reproduced. By analyzing three fitness organizations with different gendered audiences (a barre studio, a CrossFit gym, and a personal training facility) I looked at how gender and fitness …