Digital Commons Network^™

Development Of A Sensor Readout Integrated Circuit Towards A Contact Lens For Wireless Intraocular Pressure Monitoring, Sung Tran

Master's Theses

This design covers the design of an integrated circuit (IC) in support of the active contact lens project at Cal Poly. The project aims to monitor intraocular eye pressure (IOP) to help diagnose and treat glaucoma, which is expected affect 6.3 million Americans by 2050. The IC is designed using IBM’s 130 nm 8RF process, is powered by an on-lens thin film 3.8 V rechargeable battery, and will be fabricated at no cost through MOSIS. The IC features a low-power linear regulator that powers a current-starved voltage-controlled oscillator (CSVCO) used for establishing a backscatter communication link. Additional circuitry is included …

Atomic Oxygen Considerations For Leo De-Orbit Trajectories Using Solar Sails, Daniel A. Fugett

Master's Theses

Solar sails have the potential to benefit many future space exploration missions, but they lack the heritage required for present-day use. To grow confidence in solar sail technology, they could be deployed on LEO satellites higher than 600 km to help de-orbit the satellite within 25 years upon mission termination. To determine how atomic oxygen would affect the solar sail, material from Lightsail-2 was tested in a thermal-energy, isotropic, atomic oxygen vacuum chamber based in the space environments laboratory in California Polytechnic State University. The sail material, aluminized Mylar, was tested for its survivability on both the coated and uncoated …

An Ergonomics Investigation Of The Application Of Virtual Reality On Training For A Precision Task, Delaney M. Bales

Master's Theses

Virtual reality is rapidly expanding its capabilities and accessibility to consumers. The application of virtual reality in training for precision tasks has been limited to specialized equipment such as a haptic glove or a haptic stylus, but not studied for handheld controllers in consumer-grade systems such as the HTC Vive. A straight-line precision steadiness task was adopted in virtual reality to emulate basic linear movements in industrial operations and disability rehabilitation. This study collected the total time and the error time for the straight-line task in both virtual reality and a physical control experiment for 48 participants. The task was …

Code Decomposition: A New Hope, Nupur Garg

Master's Theses

Code decomposition (also known as functional decomposition) is the process of breaking a larger problem into smaller subproblems so that each function implements only a single task. Although code decomposition is integral to computer science, it is often overlooked in introductory computer science education due to the challenges of teaching it given limited resources.

Earthworm is a tool that generates unique suggestions on how to improve the decomposition of provided Python source code. Given a program as input, Earthworm presents the user with a list of suggestions to improve the functional decomposition of the program. Each suggestion includes the lines …

Effects Of Food Consumption On Cell Proliferation In The Brain Of Python Regius, Stacy Star Habroun

Master's Theses

Neurogenesis is an important and vastly under-explored area in reptiles. While the ability to generate new brain cells in the adult mammalian brain is limited, reptiles are able to regenerate large populations of neuronal cells. Pythons exhibit a characteristic specific dynamic action (SDA) response after food intake with an increase in metabolic rate that facilitates processing the meal. Associated with this change in SDA, pythons (Python spp.) also exhibit impressive plasticity in their digestive and cardiovascular physiology due to the sheer magnitude of the increase in organ growth that occurs after a meal to speed digestion, absorption, and assimilation of …

Hand (Motor) Movement Imagery Classification Of Eeg Using Takagi-Sugeno-Kang Fuzzy-Inference Neural Network, Rory Larson Donovan

Master's Theses

Approximately 20 million people in the United States suffer from irreversible nerve damage and would benefit from a neuroprosthetic device modulated by a Brain-Computer Interface (BCI). These devices restore independence by replacing peripheral nervous system functions such as peripheral control. Although there are currently devices under investigation, contemporary methods fail to offer adaptability and proper signal recognition for output devices. Human anatomical differences prevent the use of a fixed model system from providing consistent classification performance among various subjects. Furthermore, notoriously noisy signals such as Electroencephalography (EEG) require complex measures for signal detection. Therefore, there remains a tremendous need to …

A Geospatial Assessment Of Social Vulnerability To Sea-Level Rise In Coastal San Luis Obispo, Jesse A. Carpentier

Master's Theses

This project is an assessment of social vulnerability to sea-level rise in the unincorporated coastal area of the County of San Luis Obispo (County) using geospatial and statistical analysis. The intention of this assessment is to inform local climate adaptation efforts now required by state legislation. A social vulnerability index was generated at the Census block group level using 32 variables positively correlated with social vulnerability. The social vulnerability score for each block group is the sum of scores generated for the following principle components: (1) race/ethnicity and disability status, (2) social isolation and age, (3) income, and (4) housing …

On The Impact Of Android Api Evolution On Education Materials, Kennedy Owen

Master's Theses

The recent growing popularity of mobile devices has led to the establishment of several popular mobile platforms such as the Android operating system. To foster growth in this evolving market, Application Programming Interfaces (APIs) were created to enable developers to create mobile device applications that utilize mobile device features and functionality for personal or widespread commercial use. However, as a result of excessive device and API evolution, mobile development faces increasingly complex issues, including an alarmingly rapid decay of development resources.

This thesis conducts a case study around one such resource: a series of Android app development lab …

Linewidth And Ranging Characterization Of A Vernier-Tuned Distributed Bragg Reflector (Vt-Dbr) All-Semiconductor Tunable Swept Laser System For Lidar In Autonomous Applications, Taewan Kim

Master's Theses

ABSTRACT

Linewidth and Ranging Characterization of a Vernier-Tuned Distributed Bragg Reflector (VT-DBR) All-Semiconductor Tunable Swept Laser System for Lidar in Autonomous Applications

Taewan Kim

Linewidth and ranging experiments of a Insight packaged Vernier-Tuned Distributed Bragg Reflector (VT-DBR) laser across its wavelength output range of 1522.13 to 1566.18 nm is done in this work to characterize it for lidar applications. The purpose of this paper is to investigate the laser’s potential to combine the advantages of lidar and FMCW radar for autonomous systems.

Linewidth measurements were done by using a Mach-Zehnder interferometer to set up a delayed self-homodyne measurement. The laser …

Estimating Transit Ridership Patterns Through Automated Data Collection Technology: A Case Study In San Luis Obispo, California, Ashley Kim

Master's Theses

Public transportation offers a crucial solution to the travel demand in light of national and global economic, energy, and environmental challenges. If implemented effectively, public transit offers an affordable, convenient, and sustainable transportation mode. Implementation of new technologies for information-harvesting may lead to more effective transit operations. This study examines the potential of automated data collection technologies to analyzing and understand the origin-destination flow patterns, which is essential for transit route planning and stop location placement.

This thesis investigates the collection and analysis of data of passengers onboard San Luis Obispo Transit buses in February and March 2017 using Bluetooth …

The Population Genetics Of Morro Bay Eelgrass (Zostera Marina), Julia Gardner Harencar

Master's Theses

Seagrass populations are in decline worldwide. Zostera marina (eelgrass), one of California’s native seagrasses, is no exception to this trend. In the last 8 years, Morro Bay, California has lost 95% of its eelgrass. Eelgrass is an ecosystem engineer, providing important ecosystem services such as sediment stabilization, nutrient cycling, and nursery habitats for fish. The failure of recent restoration efforts necessitates a better understanding of the causes of eelgrass decline in this estuary. Previous research on eelgrass in California has demonstrated a link between population genetic diversity and eelgrass bed health, ecosystem functioning, and resilience to disturbance and extreme climatic …

Cubesat Data Transmission And Storage Throughput Optimization Through The Use Of A Zynq Soc Based Cubesat Science Instrument Interface Electronics Board, Caleb Mosby Munsill

Master's Theses

The CubeSat standard sprang from the desire to create a satellite standard that would open the doors for universities and other lower budget research institutions by making it more feasible to get their work into space. Since then, many other institutions and industries have been adopting variations on the standard for their own use. As more people are seeking out to use the CubeSat standard as their main bus, the standards and practices of the community have grown and expanded and with this growth, new challenges have been created. One such challenge is the bandwidth limitation in the RF-downlink. When …

The Investigation And Characterization Of The Reaction Of 2-Methylfuran And 2-Methyl-3-Buten-2-Ol With O(3p) And The Photodissociation Of Xylyl Bromide Isomers, Yasmin Fathi

Master's Theses

This thesis has studied the oxidation behavior of different biofuels or additives, 2-methyl-3-buten-2-ol and 2-methylfuran, in combustion experiments at the Chemical Dynamics Beamline held at the Advanced Light Source of the Lawrence Berkley National Laboratory. The oxidation of these fuels were initiated through O(³P) and the combustion experiments were analyzed using a multiplexed chemical kinetics photoionization mass spectrometer with tunable synchrotron radiation. Products of the different reactions were identified using kinetic profiles and further characterized using the photoionization spectra. The amount of each species was calculated using branching fractions.

Additionally, the unimolecular dissociation of the xylyl bromide isomers …

Transnational ‘Interruptions’ In Eritrean Refugee Lives In The Bay Area, Meron Y. Semedar Mr

Master's Theses

For many refugees, the day they flee their home country is the start of the interruption of their life. For refugees, such interruption brings the absence of continuity and loss of vision for the future, that they have to be present in the current situation – not knowing their future. This interruption literally 'interrupts' the life plan of refugees. Many Eritrean refugees vocally state that, "Our body might be here, but our soul is all in Eritrea". Eritrean refugees, having fled an oppressive regime, continue to experience nonstop interruption to their lives in their new country. Due to both the …

Relationship Between Amino Acids And Performance Measures Of Elite Soccer Players, Donald Lanham, Robert A. Huggins

Master's Theses

Current theories suggest serum amino acids concentration can be used as an index of fatigue. The purpose was to quantify changes in the biomarkers, and performance measures over time and determine the ability of amino acids to detect changes in athletic performance. Twenty male collegiate soccer players (age, 20.5 ±1.2 y; height, 180 ±6cm; body mass, 78.2 ±6.3kg; body fat percentage, 12.1 ±2.4%; HR_max; 200 ±7 b∙min^-1; VO2max, 51.5 ±5.1 mL∙kg∙min^-1) were analyzed during this study. Amino acids were analyzed via an extensive panel of blood biomarkers, while performance measures via GPS, accelerometry, and …

Are We Out Of The Woods Yet? How Democrats And Progressives Need To Rethink Their Message Framework, Lauren E. Feuerborn

Master's Theses

The aftermath of the election revealed that the Democratic Party made critical errors and had structural issues that made executing our messaging more difficult. The Democratic Party needs to return to a set of principles that prioritizes all people and their wellbeing to win elections. What do Democrats and progressives need to fix so they can deliver better messages? To better understand the dynamics that impact the Democratic Party’s capacity to create messaging I believe one must look at the relationship between the Democratic Party as an institution and the art of political messaging. The research of this paper focuses …

The Acquisition And Analysis Of Electroencephalogram Data For The Classification Of Benign Partial Epilepsy Of Childhood With Centrotemporal Spikes, Jessica A. Scarborough

Master's Theses

In this thesis, I will expand upon each step in the process of acquiring and analyzing electroencephalogram (EEG) for the classification of benign childhood epilepsy with centrotemporal spikes. Despite huge advancements in the field of health informatics—natural language processing, machine learning, predictive modeling—there are significant barriers to the access of clinical data. These barriers include information blocking, privacy policy concerns, and a lack of stakeholder support. We will see that these roadblocks are all responsible for stunting biomedical research in some way, including my own experiences in acquiring the data for the second chapter of this thesis.

This second chapter …

Generating Prevalence Estimates Of Sensitive Behaviors Through List Randomization: Survey Experiment Among Indian Males, Abha Indurkar

Master's Theses

Survey respondents may under-report or misreport sensitive behaviors due to social desirability bias. List randomization is an indirect way of asking questions which allows respondents to answer sensitive questions without the surveyor knowing their actual response. This has emerged as a new technique to ask sensitive questions as it reduces respondent’s discomfort while reporting sensitive behaviors. In this study, we apply list randomization to generate prevalence estimates of sensitive behaviors and perception related to homosexuality, molestation of women and notion of partner purity in the sample of young, college educated Indian males. Our findings are consistent with the literature on …

Goal Effectiveness In Achieving Educational Outcomes: Experimental Evidence From 9th Graders In Medellin, Colombia, Daniel Salicath, Alessandra Cassar

Master's Theses

Does goal setting among low-income ninth graders leads to higher average goal achievements of educational outcomes? This question is explored by a field experiment motivated by the acknowledged California-based Family Independence Initiative (FII), to analyze the effectiveness of individual goal setting, incentives and self-help groups on the achievement of educational goals. By randomizing treatments and control with the cooperation of the Secretary of Education in Medellin, different classrooms were assigned to five different experimental groups that met systematically for five months. The results show that goal setting is a cost-effective method to help low-income students achieve educational outcomes. Setting a …

Competitive Mothers: An Experimental Study Of Female Competitiveness And Polygamy In Togo (West Africa), Aminata Cissokho

Master's Theses

Are women in a patriarchal society like Togo as competitive as men? How does being a parent, in a polygamous vs. monogamous marriage and having high income affect one’s willingness to compete? With an incentivized experiment, we explore whether there are gender differences in selecting into competitive environments, especially when the incentives switch from cash to voucher. This experiment is conducted in Togo, West Africa, with 428 subjects including females-males, parent-non parent. Overall, the findings reveal no significant differences between the females and males’ willingness to compete. Female parents are more competitive than male parents regardless of the incentive. Subjects …

Reducing Vulnerability Through Reintegration: The Case Of The Syrian Refugees In Jordan., Felipe Hernan Rodriguez

Master's Theses

Abstract: The Syrian Civil War has claimed at least two hundred thousand lives, with over four million people having now fled Syria. Of those, about six hundred thousand have registered with the UNHCR in Jordan, with an estimated eighty thousand others living in Jordan’s Zaatari Camp. In view of the foregoing, this research attempts to analyze the vulnerability of Syrian Refugees living in Jordan in two very different environments: the Zaatari Camp and non-camp communities. We conduct a covariate matching analysis to compare the differences in socioeconomic conditions and well-being among the heads of Syrian households. Our results suggest that …

Gender Differences In Willingness To Compete: Experimental Evidence From Bosnia, Boris Jokic

Master's Theses

Abstract: This research examines gender differences in willingness to compete with differing incentives . The results of previous experiments show that women are significantly less competitive, even when they perform equally well as men. However, in these experiments cash was the only incentive provided. Therefore, we investigate what happens to gender differences in willingness to compete when we switch the incentive from cash to non-cash prize. Similar to Cassar, Whordofa, and Zhang (2016) who found that women become equally competitive as men when incentive is related to wellbeing of their children, we find that the gender gap in competitiveness still …

Drawings From Syria's Lost Generation: Psychological Impacts Of The Refugee Crisis, Rafael Panlilio

Master's Theses

Since the onset of the Syrian civil war in 2011, more than 11 million people have been forcibly displaced and exposed to violence. Even if the civil war were to end tomorrow, the refugee crisis will be expected to last for decades more. With nearly half of the refugees being children, the impact of the loss of health, education, social networks, and home environments on children have resulted in what is being called Syria‟s lost generation. A potential solution in mitigating these psychological impacts is the reintegration from refugee camps into non-camp host communities or the resettlement into other countries. …

Financing And Productivity: Evidence From Indian Manufacturing Industry, Tingyi Wu

Master's Theses

India grows rapidly in recent years, not to mention its high-technology industry. What are secrets behind this fast-growing situation? This paper intends to find the answer using a firm-level panel data in India and examine the loan-productivity relationship via both contemporaneous and lagged models. I find positive and statistically significant results that loans play an important role in firms’ performances.

Policing That Matters: Making Civilian Oversight Work, Sofia Aguilar

Master's Theses

Since 2015, there have been 8 fatal shootings by the San Francisco Police Department and no officers have faced any administrative discipline. This paper works to demonstrate how the San Francisco Police Department escapes administrative discipline in situations of officer involved shootings (OIS) through the combination of flawed accountability procedures, state laws and government leaders who fail to push against these protective forces. My project will show how the combination of little authoritative power from the Department of Police Accountability and protective state laws in favor of police privacy complicate the investigation procedures that determine whether or not officers face …

People, Land, And Profit In The South Of Market: A Critical Analysis Of The Central Soma Plan, David Woo

Master's Theses

The South of Market neighborhood in San Francisco has undergone several transformations, especially since WWII, that have largely characterized the broader relationships among local city government, private interests, and the public in San Francisco. These transformations have included deindustrialization and the restructuring of the local economy after WWII, Urban Renewal, the intensification of office uses, and the first and second technology booms. City planning and the implementation of area plans (a type of city planning development tool) have also played a significant role in facilitating these changes. By historically situating the current moment in San Francisco, this research paper seeks …

Investigation Of Absolute Photoionization Cross Sections Of Cyclic Ketones, Low Temperature Combustion Of Propargylamine By Synchrotron Photoionization Mass Spectrometry, And Computational Study Of Hypersalts, Chelsea Liliana Price

Master's Theses

The presented research was carried out at the University of San Francisco. Measurements of absolute photoionization cross sections of both cyclopentanone and cyclohexanone, as well as the Cl-initiated oxidation of propargylamine were completed through the use of a multiplexed photoionization mass spectrometer (MPMIS) located at the Lawrence Berkeley National Laboratory Advanced Light Source (ALS). Furthermore, the design of novel LiF containing hypersalts, constructed from superhalogens and superalkalis, were explored due to their enhanced ionization energies and electron affinities. All determined calculations were completed using the CBS-QB3 composite model with the Gaussian09 program.

Facial Morphology As A Determinant Of Anchorage Control, Jonathan Norman Dzingle

Master's Theses

No abstract provided.

Do Marketing Strategies Impact Condom Sales In Uganda?, Meyhar Mohammed

Master's Theses

What attracts people to buy condoms? HIV/AIDS remain one of the biggest health dangers of the world, especially in Sub-Saharan Africa. A lot of efforts have been pursued in the past two decades to drastically reduce prevalence of HIV and increase awareness about preventive mechanisms. In order to prevent relapse of success achieved so far, it is important to recognize transformation of consumer behavior due to growth in social networks, education and awareness over time. There are a lot of behavioral triggers captured by social marketing interventions in the field of public health. In an attempt to investigate the role …

The Rise Of The Maquiladoras And Crimes In Mexico, Christelle K. Bamona

Master's Theses

While it is generally argued that a stronger labor market is negatively associated with crime, there exists a “consensus of doubt” around the relationship between employment and crime. This paper examines the impact of the rise of female labor participation in manufacturing on various types of crimes in Mexico from 1998 to 2012. A fixed effects specification and an instrumental variable approach with regional and time fixed effects are employed to compare the crime rates in municipalities that were heavily exposed to local factory openings to municipalities that did not receive a labor shock of the same magnitude. By introducing …