Digital Commons Network^™

Application Of Machine Learning Techniques To Forecast Harmful Algal Blooms In Gulf Of Mexico, Bala Tripura Sundari Yerrapothu

Master's Theses

The Harmful Algal Blooms (HABs) forecast is crucial for the mitigation of health hazards and to inform actions for the protection of ecosystems and fisheries in the Gulf of Mexico (GoM). For the sake of simplicity of our application we assume ocean color satellite imagery from the National Oceanic and Atmospheric Administration as a proxy for HABs.

In this study we use a deep neural network trained on the 2-Dimensional time series proxy data to provide a forecast of the HABs’ manifestations in the GoM.Our approach analyzes between both spatial and temporal features simultaneously. In addition, the network also helps …

Trophic Ecology Of Mesopelagic Fish Larvae And Juveniles In The Northern Gulf Of Mexico, Emily Gipson

Master's Theses

The deep-pelagic environment encompasses ocean waters below 200 m depth, and comprises 90% of the volume of the Gulf of Mexico. Deep-pelagic fishes are important prey for many oceanic consumers, but relatively little is known about their early life history, including larval fish trophic ecology. An understanding of the role deep-pelagic fish larvae have in oceanic food webs is important in the development of ecosystem models that examine the connectivity (via vertical migrations) between the deep-pelagic and epipelagic environments with respect to trophic interactions, nutrient cycling, and carbon sequestration. In this study, archived plankton samples collected during 2010 and 2011 …

The Effects Of Using Behavioral Skills Training In Teaching Non-Aba Professionals To Implement Discrete Trial Training: A Meta-Analysis, Lindsey Bernard

Master's Theses

This quantitative meta-analysis evaluated the effectiveness of behavioral skills training (BST) for training non-applied behavior analysis (ABA) professionals to implement discrete trial training (DTT), as well as examining the methodological rigor of these studies using WWC design standards. Results indicate that BST produces large effects and the majority of studies either met design standards with reservations or met design standards. As a result, researchers and practitioners may be optimistic that BST is an effective approach to training non-ABA professionals to implement DTT.

A Deep Learning-Based Automatic Object Detection Method For Autonomous Driving Ships, Ojonoka Erika Atawodi

Master's Theses

An important feature of an Autonomous Surface Vehicles (ASV) is its capability of automatic object detection to avoid collisions, obstacles and navigate on their own.

Deep learning has made some significant headway in solving fundamental challenges associated with object detection and computer vision. With tremendous demand and advancement in the technologies associated with ASVs, a growing interest in applying deep learning techniques in handling challenges pertaining to autonomous ship driving has substantially increased over the years.

In this thesis, we study, design, and implement an object recognition framework that detects and recognizes objects found in the sea. We first curated …

“I’Ll Make A Captain Among Ye, And Do Somewhat To Be Talk Of Forever After”: Female Civic Agency In Sir Thomas More’S Staged Insurrection, Heather Miller

Master's Theses

Sir Thomas More is an English chronicle play that has received far less critical attention than generically similar histories written by Shakespeare. Doll Williamson, the play’s strongest female character, assumes a leadership position in initiating, as well as ultimately quelling, the Evil May Day riots, which provide the play’s initial dramatic impetus. Despite the critical tendency to overlook or diminish the seriousness of her dramatic role in the play, including in the staged insurrection scene, I argue in this thesis that we should take the concerns that Doll articulates and embodies seriously from a feminist perspective. Furthermore, I place Doll’s …

Effects Of Adolescent Motivation And Personality On Adherence And Success In A Voluntary Residential Bootcamp Program, Lydia Sigurdson

Master's Theses

The Youth ChalleNGe Program is a voluntary program for adolescents who have dropped out of high school and is intended to address various needs of at-risk youth. As a result, individuals are motivated to enroll for an array of reasons. Though prior research on the Youth ChalleNGe Program has sought to identify individual factors that determine program outcomes, no study has considered motivation for enrollment as a predictor of program success. Further, personality traits related to goal setting and self-regulation may impact the relationship between motivation and program outcome. Archival data was gathered from 710 participants in the Youth ChalleNGe …

Mass Analysis And Raw Material Sourcing As Metrics Of Poverty Point's Socio-Political Organization, Jeffrey Lewis, Jr.

Master's Theses

Hypotheses about the socio-political organization of Poverty Point have each attempted to answer the procedures that led to the site’s construction and continued use. Mass analysis and raw material sourcing of the North Three excavation units offer an enhanced examination of the lithic activities of the Poverty Point site. These analyses provide new insight into how the site may have been utilized by those traveling to the site by assigning social values to the raw materials transported there. The results of this lithic analysis and comparison to previous investigations suggest a crucial activity that would have impacted the socio-political organization …

Warm Or Chilly? An Assessment Of The Relationships Between Campus Climate And Gender Identity Among Transgender And Nonbinary College Students, Emma Allen-Morgan

Master's Theses

This research is a mixed-methods analysis of the relationship between campus climate and gender identity for transgender and nonbinary college students. Snowball and convenience sampling were used to obtain a sample of trans and nonbinary college students. Thirty surveys and six interviews were completed. I applied Bronfenbrenner’s ecological theory and Risman’s gender structure theory to analyze how macrosystems, microsystems, and the chronosystem (time) affected trans students’ gender identity, whether positively or negatively. Participants were ambivalent about the effects of college on their gender identity; on one hand, college gives trans students freedom from their previous environments. However, participants described a …

Projecting Ecuadorian Cultures In Andean Dream: A Compositional Exploration Of Psycho-Ethnomusicology For Electronics And Chamber Ensemble, Daniela Paez

Master's Theses

The musical culture of Ecuador, despite being quite unknown to the world and to a great part of the Ecuadorian people, holds an unimaginable richness and diversity rooted in thousands of years of musical traditions. Mestizaje, the process of racial mixture that followed the European conquest, has encouraged homogeneity and uniformity. I am a part of this mestizo culture, that, in reality, does not hold the same worldviews as the diverse Indigenous Ecuadorian communities. The Kichwa community of Cotacachi, presented through musical materials in this thesis, experiences an undeniable connection between the rituals relevant to agricultural life, dance and music …

Exploring The Neurochemical Basis For Toluene-Induced Alterations In Accumbal Dopamine Neurotransmission, Kristofer Reiser

Master's Theses

Inhalants as environmental contaminants or recreational drugs pose a considerable health concern, but little is known about their mode of action. In 2011, a study from the National Institute for Drug Addiction revealed that an estimate of 21.7 million people aged 12 or older have used inhalants that contain high concentrations of volatile organic compounds, primarily toluene. These compounds can have debilitating impact on brain chemistry. While the impact of toluene on the central dopamine reward pathway has been already reported, the exact mechanism underlining the effect of toluene is still obscure. Towards this goal, the present work seeks to …

Indirect Impact Of Soil Microbial Communities On Plant-Aphid Interactions, Zachary Tiemann

Master's Theses

The community dynamics of soil micro-environments are influenced by root, fungal, and bacterial exudates that can preferentially select for functional classes of microbes. Arbuscular mycorrhizal fungi (AM) fungi and plant growth promoting rhizobacteria (PGPR) are members of this community form symbiotic relationships with plants and play an important role in triggering induced systemic resistance (ISR), resulting in defensive “priming.’ Consequently, ‘primed’ plants can activate stronger and faster defense responses to future attacks by pathogens and insects. The biological system in this study involved four genotypes of barrel medic plants (Medicago truncatula), pea aphids (Acyrthosiphon pisum), and microbial communities present in …

Development And Interactions Of Instructor And Student Musical Identities In A University Introductory Music Course For Non-Music Majors, Nicholas Booker

Master's Theses

The purpose of this study was to investigate student and instructor musical identities in the context of a university music course intended for non-music majors. Participants were the instructor of an introductory music course and 16 of her students at a medium-sized university in the western United States. Study of this group of participants and their interactions throughout one 15-week semester led to greater understanding of their roles in music as well as better insight into the many ways in which they formed connections between music and their identity concepts. The research allowed for the development of assertions based on …

Characterizing Of Monoamine Neurotransmitters At The Hub Of The Central Auditory System, Patrick Wilson

Master's Theses

In the United States, loss of hearing impacts approximately 48.1 million people. The cumulative effects of noise are experienced in every area of society whether occupational, environmental, or through aging. A number of studies have linked noise induced hearing disorders to changes in spontaneous neuronal activity in certain auditory brain regions, especially, the inferior colliculus, a region that integrates auditory inputs from both ascending and descending pathways. However, the exact neurochemical basis of these disorders remains elusive. Currently, there are several compelling pieces of evidence that implicate the monoamine neurotransmitter, dopamine, in auditory processing. Based on this data, we have …

Investigating The Role Of Atp-Binding Cassette Transporters In Drosophila Melanogaster Testis Stem Cells, Israel J. Wipf

Master's Theses

Multidrug resistance is among the most pressing obstacles in cancer treatment today. Resistance is thought to arise from the ability of cancer stem cells to efflux therapeutic molecules using a collection of membrane proteins called ATP-binding cassette (ABC) transporters. There is strong interest in targeting ABC transporters to preserve and improve drug efficacy and reduce cancer recurrence. Many studies have been performed in vitro using cultured cell lines, but currently there is a lack of simple models in which to study ABC transporters in vivo. As a solution, I propose to use the fruit fly Drosophila melanogaster for the study …

Resistance To Rattlesnake Venoms In An Eastern Colorado Rodent Community, Neil Balchan

Master's Theses

The grasslands of eastern Colorado are inhabited by two species of rattlesnakes, the Prairie Rattlesnake (Crotalus viridis) and the Desert Massasauga Rattlesnake (Sistrurus tergeminus edwardsii). An array of rodent species, both native and introduced, also occupy these grasslands, and serve as a varied prey base for the previously listed rattlesnakes. Predator-prey interactions in this system gain an additional level of complexity due to the presence of venoms, a chemical arsenal possessed by both rattlesnakes to incapacitate their prey. Rodents in other systems have demonstrated resistance to snake venoms, and there is potential for a similar dynamic to be present in …

Cannabigerol Attenuate Methionine/Choline Deficient Diet- Induced Non-Alcoholic Steatohepatitis Symptoms In C57bl/6 Male Mice Via Modulating The Expression Of Cannabinoid Receptors, Nouf Aljobaily

Master's Theses

Non-Alcoholic Steatohepatitis (NASH) is the advanced and more aggressive form of Non-Alcoholic Fatty Liver Disease (NAFLD). NASH is associated with severe hepatic fibrosis and inflammation. Methionine/choline deficient (MCD) high fat diet is known to induce NASH in a short period of time without showing signs of metabolic syndrome. Cannabigerol (CBG) is a plant-derived, non-psychotropic cannabinoid that has a potential anti-inflammatory effect. Other hemp extracts reduce the progression of NAFLD to NASH, whereas the impact of CBG on NASH is still unknown. Therefore, these studies aim to 1. Evaluate the therapeutic potential of CBG on reducing hepatic steatosis and fibrosis. 2. …

Neural Network For Monitoring Infant Feeding Process In The Smartbottle Device, Jiajun Guan

Master's Theses

To research the relationship between Childhood obesity and infant feeding patterns, the Electrical Engineering Department at California Polytechnic State University has designed a SmartBottle device attaching to the bottom of a baby bottle to monitor the infant feeding process. This project mainly focuses on the software and firmware design, as well as the neural network design of the SmartBottle device. The SmartBottle device is designed to identify infant feeding activities and to record related data for overweight and obesity research on children. This device includes a 6-dimensional inertial sensor that contains a 3-axis digital accelerometer and a 3-axis digital gyroscope. …

Inclusion Of Olive Or Coconut Oil In A High-Fructose High-Fat Diet Increases Liver Injury In A Pig Model Of Pediatric Nafld, Kayla A. Dillard

Master's Theses

Non-alcoholic fatty liver disease (NAFLD) represents the major cause of pediatric chronic liver pathology in the United States. The objective of this study was to investigate the effect of partial substitution of dietary lard by an isocaloric amount of olive or coconut oil on endpoints of NAFLD. Thirty-eight 15-d-old Iberian pigs housed in pens balanced for weight and sex were randomly assigned to receive 1 of 3 hypercaloric high-fructose high-fat (HFF) diets for 10 weeks: 1) lard (LAR; n=5 pens), 2) lard + olive oil (OLI, n=10), and 3) lard + coconut oil (COC; n=10). Additional pigs (BSL, n=4) were …

Lotus: A Web-Based Computational Tool For The Preliminary Investigation Of A Novel Mst Method Utilizing A Library Of 16s Rrna Bacteroides Otus, Ginger Dewitte

Master's Theses

Microbial Source Tracking (MST) is a field of study that attempts to identify the source of fecal contamination in waterways in order to assist with development of remediation strategies. Biologists at Cal Poly Center for Applications in Biotechnology (CAB) are developing a new MST method using microbes from the genus Bacteroides. Bacteroides species are host-specific microorganisms that can theoretically be used to trace back to a single host species. After fecal samples are collected, biologists use Next-Generation Sequencing (NGS) techniques to obtain only the genetic sequences of microorganisms belonging to the phylum Bacteroidetes. Investigators hypothesize that similar sequences belong …

Honor Crimes: A Question Of Honor, Culture, And Humanity, Nadia N. Almusleh

Master's Theses

Honor crimes, femicide, domestic abuse and violence are widely prevalent in patriarchal societies. Middle Eastern cultures deeply value protecting the chastity and honor of women. The traditional images of women and the notions of honor and shame are consistently used as justifications for violence and killings. This is not attributable to a single culture or religion. It is rather a manifestation of societal norms around gender-based violence. Feminist activism against honor crimes in the Middle East within the last decade has increasingly received social media attention. However, the impact of this social media activism on government intervention has yet to …

Foundations Of Development: Perceptions Of Character And Leadership Development In Collegieate Judo Student Athletes, Hiroshi Yamaguchi

Master's Theses

Sports have been a tool for development within educational institutions for decades. In the United States, around 8 million high school students participate in high school sports. Very few go on to play for University Athletic Departments. Out of the 8 million students, only 495,000 (6.1%) of them will compete at NCAA schools (NCAA, 2020). Though the probability of competing in the NCAA's elite divisions is low, university students have plenty of opportunities to play and compete in sports via club/recreational sports programs, intramurals, and physical education courses. Estimates show that over 2 million higher education students in the United …

An Interdisciplinary Approach: Schizophrenia Derails Heteronormative Expectations In Psychological Narratives 2021, Bobbie Jo Weaver

Master's Theses

Required introductory psychology courses teach students a general and oversimplified version of the immense number of subfields within Psychology studies, much like introductory literature classes compress different genera throughout history into a miniscule number of “representative” texts. Nevertheless, these footholds generate an entryway into a whole new world of (specialized) exploration. Reading a text such as The Quiet Room: A Journey out of the Torment of Madness by Lori Schiller and Amanda Bennett provides a window for many students to crawl into one of Psychology’s darkest shadows, the field of abnormal psychology. Schiller’s non-fictional memoir, The Quiet Room, tells readers …

Found Media: Interactivity And Community In Online Horror Media 2021, Jax Mello

Master's Theses

Being isolated is a common fear. The fear can take many forms, from the fear of being the last one alive in a horrific situation to being completely deserted by everyone you love. This is a fear that has been showcased many different times in movies, novels, and every other piece of media imaginable. Although not always tied to the horror genre, the fear of being isolated is tightly intertwined with many horror stories. Therefore, it is interesting when a horror production goes out of their way to encourage interactivity within its audience. This goes beyond an artist’s desire for …

Study Of Fragility Functions For Assessing Damage To Water Pipe Networks Caused By Earthquake Loading, Dylan Joseph Merlo

Master's Theses

The performance of water lifelines during seismic events is an area of ongoing research. In this study we evaluate eight (8) different seismic events and the impact that ground shaking and ground deformations had on water pipeline systems. The overall goal of this work is to provide municipalities and utility providers with tools for mitigating the consequences of seismic hazards on water lifeline systems by analyzing the accuracy of damage estimation models. Three (3) different repair rate models are evaluated using data collected from the seismic events and compared to observed repair rate data. Results are analyzed to examine the …

Design Of An Ultra-Wideband Frequency-Modulated Continuous Wave Short Range Radar System For Extending Independent Living, Toai-Chi Nguyen

Master's Theses

Falls in the disabled and elderly people have been a cause of concern as they can be immobilized by the fall and have no way to contact others and seek assistance. The proposed frequency modulated continuous wave (FMCW) short range radar (SRR) system, which uses ultra-wideband (UWB) signals can provide immediate assistance by monitoring and detecting fall events. The unique characteristics of this system allow for a frequency-based modulation system to carry out triangulation and sense the location of the fall through the usage of a continuous chirp signal that linearly sweeps frequency. This project focuses on the development, design …

The Relation Of Physical Activity To Quality Of Life, Balance, And Cognition In Adults With Parkinson's Disease: A Pilot Study, Alexandra Ziepke

Master's Theses

As the 2nd most common neurodegenerative disorder, Parkinson’s disease (PD) is compiled of motor and nonmotor symptoms (Dashtipour et al., 2015). Motor symptoms include bradykinesia (slow movement), resting tremor, rigidity, and postural instability, and nonmotor symptoms include cognitive delays (Steib et al., 2018). Many studies have found positive results using exercise as therapy, but few have inspected daily levels of physical activity on balance, cognition, and quality of life in adults with PD. Therefore, the purpose of this investigation is to examine the relationship between physical activity level and progressive symptoms of PD - specifically bradykinesia, balance, cognitive function, and …

The Role Of Med12, Notch1, And Notch3 In Adipose Stem Cell Self-Renewal And The Integrated Use Of Stem Cells In Public Educational Materials, Rebecca Hodnett

Master's Theses

Human adipose-derived mesenchymal stem cells offer significant therapeutic potential as an ethically sound, easily accessed source of adult stem cells. To harness their medically relevant properties, it is necessary to understand the mechanisms that control their fate. Cell state and differentiation of stem cells is determined by interactions of signaling pathways, chromatin modifiers, and transcription factors working to regulate cell-type specific gene expression profiles. Specifically, both the MED12 subunit of the Mediator complex and the Notch signaling pathway are known to individually influence hASC self-renewal. We investigated the relationship between Notch signaling and transcriptional cofactor, MED12, to elucidate a potential …

The Effects Of Increased Nacl Salinization On Riparian Plant Productivity And Decomposition Processes, Connor Gruntz

Master's Theses

NaCl salinization in inland ecosystems is increasing globally due to anthropogenic activity and may alter organism abundances and ecosystem processes. Because sodium is an essential nutrient for heterotrophs but not required by autotrophs, this salinization can alter species abundance and performance. Riparia may be particularly sensitive to increases in salinization. Here, I examined the Sodium Subsidy-Stress Hypothesis, which states that deviations from an organism’s optimal nutrient target can decrease abundance and performance, by studying the effects of NaCl salinization on plant chemistry, productivity, and decomposition rates in riparia. First, I selected three focal common riparian plants (water oak: Quercus nigra, …

Relationship Between Calcium Consumption From Dairy And Non-Dairy Sources On Bone Mineral Density Of College Students, Andrew M. Pescovitz

Master's Theses

Dairy product consumption has been on the decline for decades in the US and worldwide, and the increase in plant-based substitutes has grown substantially. Osteoporosis and the risk of bone fractures are serious public health issues. To date, little scientific-based studies have compared the relationship between calcium intake from dairy sources vs non-dairy sources and bone mineral density. The purpose of this study is to compare the relationships between calcium consumption from dairy vs. non-dairy sources and bone mineral density among college students. There was a total of 66 participants in the study including 15 (23%) males and 51 (77%) …

Controller Modeling And Stability Analysis Of Multiple Input Single Output Dc-Dc Converter, Astha Adhikari

Master's Theses

This thesis entails the stability analysis of the Multiple Input Single Output (MISO) DC-DC converter developed for the DC House Project at Cal Poly. A frequency domain control system model of the MISO converter was designed and constructed using MATLAB Simulink. Transfer functions were derived and modeled for each stage of the converter to best fit the converter circuit system used in the original MISO circuit. Stability metrics such as overshoot, undershoot, rise time, phase margin and gain margin were measured to evaluate and analyze the stability of the converter. These metrics were measured with the original model including the …