Digital Commons Network^™

Venom Composition Of Little Known Mountain Rattlesnakes And Predator-Prey Interactions Of Crotalus Pricei Pricei And Its Natural Prey, Sceloporus Jarrovii, Emily Grabowsky

Master's Theses

The Crotalus intermedius clade is a small group composed of four species: C. intermedius, C. transversus, C. pricei, and the recently identified C. tancitarensis (Alvarado-Díaz and Campbell, 2004; Reyes-Valesco et al. 2013). Though these species are restricted to high elevations of Sky Islands of southern Arizona and throughout México, little has been reported about their natural history and basic biology, including venom composition. Specifically, the Western Twin-spotted Rattlesnake (C. pricei pricei) is a small lizard specialist restricted to the more northern Sky Islands of México, with isolated populations in southern Arizona, where they are a protected species. …

Nanosatellite Launch Data-Logger (Sync), Christopher Martin Gerdom

Master's Theses

CubeSat designers are increasingly looking to incorporate delicate structures and optics into their payloads. These delicate payloads, however, may not survive the required absolute-worst-case launch vibration testing needed for flight certification. To help address this problem, and to better match testing conditions to real-world launch environments, this thesis introduces Sync, a compact 1/4U CubeSat payload designed to collect data on the vibrations and thermal environments CubeSats experience inside a deployer on the way to orbit. This data can be used to better understand the launch environment for different vehicles, and help develop new, more realistic testing guidelines that could enable …

The Effect Of Spill Contaminants On Marine Biofilms And Microbially-Induced Corrosion Of Carbon Steel, Rachel Mugge

Master's Theses

There are over 2,000 known historic shipwrecks located in the northern Gulf of Mexico which are ecological and cultural resources that support the diversity of life found in the deep-sea when they become artificial reefs. Spilled crude oil and chemical dispersant from the Deepwater Horizon (DWH) spill may have impacted the preservation of deep-sea historic shipwrecks and their microbiomes if they are located in areas where oil and dispersant were deposited on the seafloor. Oil potentially accelerates corrosion of metal through a biologically-mediated process called microbially-induced corrosion (MIC). Introduction of spill contaminants may accelerate MIC on shipwreck hulls, which may …

Amplifying The Prediction Of Team Performance Through Swarm Intelligence And Machine Learning, Erick Michael Harris

Master's Theses

Modern companies are increasingly relying on groups of individuals to reach organizational goals and objectives, however many organizations struggle to cultivate optimal teams that can maximize performance. Fortunately, existing research has established that group personality composition (GPC), across five dimensions of personality, is a promising indicator of team effectiveness. Additionally, recent advances in technology have enabled groups of humans to form real-time, closed-loop systems that are modeled after natural swarms, like flocks of birds and colonies of bees. These Artificial Swarm Intelligences (ASI) have been shown to amplify performance in a wide range of tasks, from forecasting financial markets to …

Improving Ultra-Wideband Localization By Detecting Radio Misclassification, Cory A. Mayer

Master's Theses

The Global Positioning System (GPS) and other satellite-based positioning systems are often a key component in applications requiring localization. However, accurate positioning in areas with poor GPS coverage, such as inside buildings and in dense cities, is in increasing demand for many modern applications. Fortunately, recent developments in ultra-wideband (UWB) radio technology have enabled precise positioning in places where it was not previously possible by utilizing multipath-resistant wide band pulses.

Although ultra-wideband signals are less prone to multipath interference, it is still a bottleneck as increasingly ambitious projects continue to demand higher precision. Some UWB radios include on-board detection of …

Art As Invitation: The Effects Of Including Art Education In The Curriculum Of A Preschool Classroom Of Refugee Students, Nancy Heckmann Erekson

Master's Theses

This study is about how art constitutes an invitation for marginalized people. Refugees are the uninvited, and often remain on the periphery of host communities. This research examines how artmaking acts as an invitation for refugee preschool students and their families to connect with the broader community. I approached data collection through the method of educational connoisseurship and educational criticism and the theory of relational aesthetics. I analyzed data from observations conducted in a refugee preschool classroom and from interviews with six families. Further, I analyzed observations and surveys from a public exhibit of children’s art. These sources provided data …

Discovering Countries And Their Cultures Through Movement: Fifth-Grade Students Developing Awareness And Empathy Toward Each Other, Rebecca S. Epstein

Master's Theses

The purpose of this study was to investigate and answer the following essential questions: 1) What are students’ responses to use of movement and dance to teach multi-cultural lesson content? 2) What movement and dance-based methods can be used to help fifth-grade students develop empathy towards classmates from different cultures and countries from around the world? 3) Which movement and dance-based lessons seemed to be most effective to develop student empathy for other students from a different culture and country? One goal of the study was to help students become more empathetic toward one another through movement. There were twenty-four …

Dancing The Diaspora: Discovering The Influence Of Traditional And Tribal African Dance In The History Of African-American Social And Concert Dance In The Caribbean And The United States, Kerri-Noelle Humphrey

Master's Theses

The primary goal of this research project was to identify the influence of traditional African dance on African diasporic dance in the Caribbean and the United States. The study demonstrated how movement connects people and gives them the opportunity to share common experiences, ideas, and traditions. This qualitative and quantitative study was designed to answer four essential questions. Q1 What is traditional African dance? Q2 What is Black (Africanist) dance? Q3 How the elements of dance (Time, Space, Energy) can be used to help students make comparisons between African tribal dance and a variety of Africanist dance genres? Q4 How …

Perceptions Of Technology In Dance Education: The Effect Of Technology On Student Learning And Teaching Strategies Of The Twenty-First Century Skills In Dance Education, Anna Kristine Gradwohl

Master's Theses

The purpose of this study was to assist educators in understanding the advantages and disadvantages of using technology in a dance classroom to teach the twenty-firstcentury- skills of creativity, critical thinking, and collaboration. This research evaluated perceptions of technology integration through the lens of fifty-four current dance educators with a goal of discovering the effects technology has on teaching strategies and student learning in a dance classroom. The research instrument used in this study was an electronic survey that included both quantitative and qualitative questions to analyze the data. The data suggested that current dance educators supported the use of …

Vitality Of Water/Vitalidad Del Agua: Our Sacred Connection To Water And How We Can Interpret The Importance Of Water Through Artistic Inquiry, Jenifer Fogarty

Master's Theses

Water has appeared in the work and study of artists for centuries. There are countless aspects of water to be explored, from the sheer physical qualities of water to the spiritual, political, and practical associations with water. Water is what gives us life, and yet the vitality of this precious resource has been threatened over time. This exploration highlights important aspects of the study of water through art-making. My exploration began in the studio while making my own work. I sought to create a multi-sensory environment where viewers could participate and be immersed in the work itself. The site-specific installation …

Postpartum Depression In The News Media, Lauren Michelle Mcdonald

Master's Theses

The current study analyzed the relationship between gender constructs and the construction of illness in the news media. Drawing on Entman’s (1993) framing analysis, the present study assessed if postpartum depression was constructed in the news media differently for men and women. Using LexisNexis, 153 news media articles were collected from major United States news sources between 1994-2016 using keywords such as, postpartum depression and paternal depression. The content analysis indicated that the definition of postpartum depression, the cause of the illness, the moral evaluations and the prescribed treatments were related to gender constructs. Overall, these findings enhance our understanding …

A Stormwater Management Model For California Polytechnic State University Campus, Hsuan-Wen Chu

Master's Theses

Developments that have been taking place on Cal Poly campus over the years have altered the natural hydrology of the area. Stormwater management practices could help reduce the impacts of these developments. Computer models can help to design effective and economical stormwater management solutions at a watershed scale. As such, the objective of this study was to develop a stormwater management model for Cal Poly campus. The model was developed based on the utility data obtained from the university and other watershed data available from open sources. Field surveys were conducted to address some anomalies in the utility data, and …

Global Renewable And Nonrenewable Energy Use Impact Assessment Of U.S. Manufacturing: An Integrated Cradle-To-Gate Lca And Dea Approach, Bahadir Ezici

Master's Theses

In this thesis, U.S. manufacturing industries` global supply chain-linked energy use and economic output are investigated considering a total of 16 renewable and nonrenewable energy carriers. A multiregion input output (MRIO) framework is employed to conduct the global supply chain-linked energy use impact assessment. The study period was between 1995 and 2014 based on data availability. Thus, 20 MRIO models were developed. Each MRIO model consists of the 40 largest economies of the world and the rest of the world (ROW) as the 41st country. Each country’s economy was structured into 35 manufacturing and service industries based on the Worth …

Using Offline Activities To Enhance Online Cybersecurity Education, Sarah Padlipsky

Master's Theses

Since the beginning of the 21st century, the United States has experienced the impact of a technological revolution. One effect of this technological revolution is the creation of entirely new careers related to the field of technology, including cybersecurity. Continued growth in the cybersecurity industry means a greater number of jobs will be created, adding to the existing number of jobs that are challenging an under-educated and under-trained workforce. The goal of this thesis is to increase the effectiveness of cybersecurity education. This thesis studies whether an online course in cybersecurity can be enhanced by offline, in-person activities that mirror …

Cold Acclimation Response Of Non-Native Italian Wall Lizard (Podarcis Siculus) Populations From New York And California, Daniel Haro

Master's Theses

Understanding how organisms respond to climatic variability and novel conditions is becoming an increasingly important task for ecologists. For ectotherms in the northern hemisphere, the response to cold is of special interest, considering that poleward range expansion events and increasing variability of temperatures during winter are already being observed as consequences of a warming planet. Though direction of change in physiological variables in response to cold is well studied in ectotherms, the extent to which traits can change and the rate at which they can change is not.

We compared the extent and rate of change in cold tolerance (CT …

Cleaver: Classification Of Everyday Activities Via Ensemble Recognizers, Samantha Hsu

Master's Theses

Physical activity can have immediate and long-term benefits on health and reduce the risk for chronic diseases. Valid measures of physical activity are needed in order to improve our understanding of the exact relationship between physical activity and health. Activity monitors have become a standard for measuring physical activity; accelerometers in particular are widely used in research and consumer products because they are objective, inexpensive, and practical. Previous studies have experimented with different monitor placements and classification methods. However, the majority of these methods were developed using data collected in controlled, laboratory-based settings, which is not reliably representative of real …

Fingerprinting The Smart Home: Detection Of Smart Assistants Based On Network Activity, Arshan Hashemi

Master's Theses

As the concept of the Smart Home is being embraced globally, IoT devices such as the Amazon Echo, Google Home, and Nest Thermostat are becoming a part of more and more households. In the data-driven world we live in today, internet service providers (ISPs) and companies are collecting large amounts of data and using it to learn about their customers. As a result, it is becoming increasingly important to understand what information ISPs are capable of collecting. IoT devices in particular exhibit distinct behavior patterns and specific functionality which make them especially likely to reveal sensitive information. Collection of this …

Comparative Analysis Of Electrodynamic Toroidal Radiation Shielding Configurations, Max Rosenberg

Master's Theses

Beyond the protective confines of Earth's atmosphere and magnetosphere, spacecraft are subject to constant bombardment by high-energy charged particles originating from our Sun in the form of Solar Particle Events (SPEs), and from outside the solar system in the form of Galactic Cosmic Rays (GCRs). The harm these particles do can be reduced or mitigated outright through radiation shielding. Because protons and other charged particles comprise most of these radiation particles, strong magnetic fields could be generated around spacecraft to deflect incoming charged radiation particles. This thesis investigates the performance of specific configurations of toroidal superconducting solenoids to generate magnetic …

Fluid Agitation Studies For Drug Product Containers Using Computational Fluid Dynamics, Matthew Hiroki Ichinose

Master's Theses

At Amgen, the Automated Vision Inspection (AVI) systems capture the movement of unwanted particles in Amgen's drug product containers. For quality inspection, the AVI system must detect these undesired particles using a high speed spin-stop agitation process. To better understand the fluid movements to swirl the particles away from the walls, Computational Fluid Dynamics (CFD) is used to analyze the nature of the two phase flow of air and a liquid solution.

Several 2-D and 3-D models were developed using Fluent to create simulations of Amgen's drug product containers for a 1 mL syringe, 2.25 mL syringe, and a 5 …

Molecular Dynamics Of P21 And Fluorescent Sphingomyelin In Keratinocytes Exposed To Uvb, Tyler Malcolm Fraser

Master's Theses

Non-melanoma skin cancer (NMSC) is the most common malignant tumor, representing more than a third of all malignant tumors combined and the incidence is increasing every year. Ultraviolet (UV) radiation from the sun is the most dominant factor contributing to tumor initiation and progression. The condition is most prevalent in populations with lighter skin and older age. Current pharmaceutical molecular research targets the inhibition of the Epidermal Growth Factor Receptor (EGFR), a receptor which is commonly over-expressed or dysregulated in skin malignancies. This study evaluates the content and location of the damage marker p21 within keratinocytes that were incubated in …

Logging, Visualization, And Analysis Of Network And Power Data Of Iot Devices, Neal Huynh Nguyen

Master's Theses

There are approximately 23.14 billion IoT(Internet of Things) devices currently in use worldwide. This number is projected to grow to over 75 billion by 2025. Despite their ubiquity little is known about the security and privacy implications of IoT devices. Several large-scale attacks against IoT devices have already been recorded.

To help address this knowledge gap, we have collected a year’s worth of network traffic and power data from 16 common IoT devices. From this data, we show that we can identify different smart speakers, like the Echo Dot, from analyzing one minute of power data on a shared power …

Indirect Food Web Interactions: Sea Otter Predation Linked To Invasion Success In A Marine Fouling Community, Maggie F. Jenkins

Master's Theses

Humans have caused grave ecological and economic damage worldwide through the introduction of invasive species. Understanding the factors that influence community susceptibility to invasion are important for controlling further spread of invasive species. Predators have been found to provide biotic resistance to invasion in both terrestrial and marine systems. However, predators can also have the opposite effect, and facilitate invasion. Therefore, recovery or expansion of native predators could facilitate the spread of invasive species. Needles et al. (2015) demonstrated that the threatened southern sea otter (Enhydra lutris nereis) facilitated the invasion of an exotic bryozoan, Watersipora subatra. …

A Computational Fluid Dynamics (Cfd) Analysis Of The Aerodynamic Effects Of The Seams On A Two-Dimensional Representation Of A Soccer Ball, Allen R. Rohr

Master's Theses

Most major sports today use a dedicated ball or projectile with specific shape, size, and surface geometry, except for soccer. Over the history of the sport, the surface geometry and design stayed relatively unchanged, sewn together using 32 pentagonal and hexagonal panels. However, recent innovations in panel designs differ substantially from the traditional 32 panel ball. The effects these new designs have on the aerodynamic characteristics of the ball have remained largely unknown, even with the influx of experimental research completed in the past decade. Experimental studies have been broad in scope, analyzing an entire ball in wind tunnels or …

Hip And Knee Biomechanics For Transtibial Amputees In Gait, Cycling, And Elliptical Training, Greg Orekhov

Master's Theses

Transtibial amputees are at increased risk of contralateral hip and knee joint osteoarthritis, likely due to abnormal biomechanics. Biomechanical challenges exist for transtibial amputees in gait and cycling; particularly, asymmetry in ground/pedal reaction forces and joint kinetics is well documented and state-of-the-art passive and powered prostheses do not fully restore natural biomechanics. Elliptical training has not been studied as a potential exercise for rehabilitation, nor have any studies been published that compare joint kinematics and kinetics and ground/pedal reaction forces for the same group of transtibial amputees in gait, cycling, and elliptical training. The hypothesis was that hip and knee …

A Carrier-Pigeon Uas For South Pole Data Transfer, Shaun P. Wixted

Master's Theses

The assessment of feasibility of an Unmanned Aircraft System (UAS) that is specifically tailored—in performance, operating and support characteristics, and payload—to support hardware-based data transfer from South Pole Station in Antarctica to a location of high connectivity has been undertaken. Due to the specific location of the Amundsen-Scott South Pole station and competing demands from other governmental agencies, satellite connectivity requirements for data transfers cannot be met at the South Pole. In the recent decades, the advancement in UAS capabilities have overwhelming extended their operational reach in military and commercial reconnaissance and surveillance missions. This UAS has the potential to …

Form Based Codes And Economic Impacts: A Multivariate Regression Analysis And Case Study, Jacob M. Howard

Master's Theses

After a 100-year history, traditional zoning practices are being challenged as a contributing factor in a number of social, heath and economic problems facing cities in the United States. In this context, form based codes have emerged as a possible alternative way for cities to guide development. Growing out of the New Urbanist movement, form based codes frequently mix uses, allow for a greater variety of housing types and encourage development that is both denser and more compact. Despite an established literature which links land-use regulations, and zoning in particular, to fiscal outcomes, the impacts that form based codes have …

The Thermal Ecology Of Sceloporus Occidentalis, Luis Patricio Burgos

Master's Theses

With temperatures rising globally, assessing the possible impacts of the changing climate becomes more and more urgent. Ectotherms are excellent indicators of potential climatic ramifications on biodiversity because of their heavy reliance on the environment for their thermoregulation. Studies have historically looked at thermal tolerance values to establish predictive models for population and species extinctions.

In chapter 1, we looked at recent studies that suggest that thermal tolerance may be a plastic trait and test the effects empirically. Most studies are based on captive lizards acclimated to laboratory conditions that do not necessarily reflect natural environments, and if thermal tolerance …

Population Curation In Swarms: Predicting Top Performers, Ryan W. Heller

Master's Theses

In recent years, new Artificial Intelligence technologies have mimicked examples of collective intelligence occurring in the natural world including flocks of birds, schools of fish, and swarms of bees. One company in particular, Unanimous AI, built a platform (UNU Swarm) that enables a group of humans to make decisions as a single mind by forming a real-time closed-loop feedback system for individuals. This platform has proven the ability to amplify the predictive ability of groups of humans in realms including sports, medicine, politics, finance, and entertainment. Previous research has demonstrated it is possible to further enhance knowledge accumulation within a …

Ridership Ramp-Up For Fixed-Guideway Transit Projects: An Evaluation Of Initial Ridership Variation, Jill Elizabeth Shinn

Master's Theses

Performance-based planning and programming has increased in popularity for transit project funding in recent years. This methodology focuses on quantitative performance measures to inform decision making. For transit projects, projections or observed ridership is the most commonly used performance measure to evaluate project benefits. Conventional wisdom within the transit industry suggests that measuring the performance of a transit project immediately after project opening may not capture all the project’s benefits, since it takes time for a project to realize its short-term ridership potential, a process commonly referred to as ridership ramp-up. While this idea is both intuitive and appealing, especially …

The Investigation Of Food Neophobia And Bitterness Sensitivity On Food Preference In Familiar And Unfamiliar Fruits And Vegetables In California Elementary Schools, Maria Handley

Master's Theses

The goal of this study was to understand the relationship between food neophobia and bitterness in consumer liking. Fruit and vegetable consumption is necessary for elementary school children to build healthy habits. Free and reduced lunch programs (FRL) in schools provide nutritional opportunities to students. Bitterness sensitivity and food neophobia were examined as separate drivers of liking in acceptance testing (n=161, ages 6-12) from two local elementary schools (high and low %FRL). The food neophobia scale and the fruit and vegetable neophobia instrument (FNVI) were used to determine food neophobia. FNVI scores distinguished consumers in hierarchical cluster analysis of overall …