Digital Commons Network^™

Escherichia Coli Strain Diversity In Humans: Effects Of Sampling Effort And Methodology, Emily R. Neal

Master's Theses

Studies investigating Escherichia coli strain diversity and demographics in human hosts are frequently inconsistent regarding sampling effort and methodology while current strain typing methods are often expensive or laborious. To rectify these inconsistencies, sampling effort was investigated by comparing the diversity of 15-isolate collections to 100-isolate collections from 3 human subjects. Temporal variation in E. coli strain diversity was also studied by collecting 15 isolates once every 6 months. Additionally, strain identification and diversity collected by different sampling methods (fecal swabs vs. anal swabs collected at different times around defecation) were compared to identify any inherent biases in sampling method. …

A Generic Decision Making Framework For Autonomous Systems, Connor Lange

Master's Theses

With the rising popularity of small satellites, such as CubeSats, many smaller institutions previously incapable of developing and deploying a spacecraft have starting to do so. Institutions with a history of space flight, such as NASA JPL, have begun to put projects on CubeSats that would normally fly on much larger satellites. As a result, the institutions with space flight heritage have begun to port spacecraft software that was previously designed for much larger and more complex satellites to the CubeSat platform. Unfortunately for universities, who are the majority of all institutions devel- oping CubeSats, these ported systems are too …

Stabilization Of Nepheline Syenite Filler In A Uv-Cure Polyurethane Dispersion Wood Coating And Viscosity Stabilization Of Tinted Latex Architectural Coatings, Maung Ye Htet

Master's Theses

PART I ABSTRACT

STABILIZATION OF NEPHELINE SYENITE FILLER IN A UV-CURE

POLYURETHANE DISPERSION WOOD COATING

Nepheline syenite is a naturally occurring, silica deficient, sodium potassium aluminum silicate functional filler used in polymeric coatings, adhesives, and inks. Due to its unique optical characteristics, it can be utilized in formulating a low-viscosity polyurethane dispersion UV-cure clear wood coating system to enhance its functional properties. However, when the coating is formulated with the ultrafine filler, especially at a high loading level (e.g. >10% solids), the filler rapidly settles after formulated, forming a densely packed sediment layer shortening its shelf-life. Suspension of the filler …

How Land Use Regulations Inform Sustainable Development: A Look At Commercial Development In Bakersfield, California, Darcy Marie Reed

Master's Theses

This research analyzes the relationship between local land use regulations and commercial development in the City of Bakersfield, California, specifically focusing on how the regulations are used to inform commercial development to be sustainable or not. This research contributes to similar research efforts through its contribution of the Sustainable Development Indicator Checklist, the tool used to measure sustainable development within the regulations as well as the built environment. Analysis of six case study locations falling under the C-B (Central Business), C-C (Commercial Center), and PCD (Planned Commercial Development) zone designations indicated the local land use regulations were not informing development …

Cplop: The Cal Poly Library Of Pyroprints, Jan Lorenz Villaceran Soliman

Master's Theses

To date, microbial source tracking (MST), i.e. determining the source of microbial contamination based on the specific strains observed in the environment, often uses methods that are time-consuming, expensive and not always reliable. The biology department at Cal Poly, San Luis Obispo has developed a new method for MST called pyroprinting. Pyroprints can be used as DNA fingerprints for identifying sources of fecal contamination and studying bacterial populations in host animals. The MST method consists of two parts: the pyroprinting process and a database of pyroprints. The Cal Poly Library of Pyroprints (CPLOP) was developed to provide a database application …

Computational Modeling To Evaluate Helical Electrode Designs For Use In Vagus Nerve Stimulation, Anthony W. Cowley

Master's Theses

An estimated 0.5% of world’s population has been diagnosed with epilepsy. Of these patients 20-30% will be unable to achieve seizure control with anti-epileptic drugs. Vagus nerve stimulation (VNS) may be an appropriate treatment option for some patients with pharmaceutically refractory, partial-onset seizures.

VNS therapy uses a helical electrode to interface between the implantable pulse generator and the vagus nerve. While there have been several studies related to the mechanical and electrical safety of such electrodes, little work has been done toward understanding the effectiveness of the helical electrode in nerve stimulation. A better understanding of the voltage field and …

Exploring Children’S Conceptual Development: An Examination Of How Children Learn Astronomy From Reported Access To Related Materials, Experiences, And Conversations To Initial Understandings, Jenna Bernstein

Psychology and Child Development

No abstract provided.

Slic: Family Science Backpacks For Preschoolers, Lorin Nevius

Psychology and Child Development

In this senior project, I reviewed existing literature regarding science instruction in preschool classrooms, young children’s capabilities and interest in learning science, what science is happening at home, as well as preschool teachers’ feelings toward teaching science. I explored the possibility of bridging the gap between the school and home environment by using a prepared informal learning tool that students could take home and complete with their family.

During the years children are in preschool, they are forming their understandings of the world around them (French, 2004; Nayfield, Brenneman & Gelman, 2011; Eshach & Fried, 2005). In developing these understandings, …

Beach Wheelchair Project, Rory Aronson, Joshua Marcum, Samuel Coyne, Alex Hayes, Alexa Colburn, Max Hessel, Benedikt Strauss, Marvin Rimmele, Marco Pietsch

Mechanical Engineering

The Beach Wheelchair, Sandcrawler, is a machine intended to help give people with disabilities the full beach experience. The non-profit organization Bridge II Sports sponsored this project, and tasked us with developing the design and fabricating a prototype. This chair has several features including a linkage mechanism that raises and lowers a chair relative to an external frame, hand crank drive with Gates Carbondrive belt and sprockets, buoyant Wheeleez balloon tires, and much more.

A Sociological And Statistical Analysis Of Fraternity Men's Attitudes On Rape And Sexual Assault, Cierra Ensign

Social Sciences

Hostility, aggression, and empathy levels of 488 fraternity men were measured using portions of the Burt Rape Myth Acceptance Scale, Malamuth’s Behavioral Intent to Rape Question, Hostility Toward Women Scale, and Survey Measure of Emotional Empathy. Thirteen out of the fifteen Interfraternity Council (IFC) chapters at a west coast public university campus volunteered to participate in the study. The survey consisted of thirty-five questions aimed at finding a correlation between the respondents housing location, year in school, position of office in his fraternity, and number of siblings and hostility, aggression, and empathy. Although no significant findings relating hostility, aggression, and …

Understanding The Increased Prevalence Of Autism In The United States, Jenna Marie Mendes

Social Sciences

No abstract provided.

Geographic Information Systems Analysis Of Crime In San Luis Obispo For 2012, Eric Delorme

Social Sciences

The research and final project that I plan to do will be composed of a few different parts. I will be taking crime report data from the city of San Luis Obispo and analyzing it with GIS software. The data will be from the most recent reported calendar year. I will be looking at the data spatially so that I can compare the areas of the city in which crime is most prevalent. I will be creating multiple maps which will be looking individually at different types of crime, such as violent crimes, burglary and theft, assault and battery, sex …

Policies And Implementation Of Global Development, Scott Kjorlien

Social Sciences

International development is a very bulky topic of debate in today’s day in age. People from many different noble professions have extremely varying views of what exactly development is and how it should be executed. This paper is a starting point to understanding the various aspects of modern implementation of development. This paper gives an overview of definitions and measures of development, common paradigms in development theory and practices and implementation of post WWII development.

Application Of Quantum Dots Onto Glass Wafers As A Feasibility Test For The Spectral Down Conversion Of Uv Light For Solar Cells, Anthony Fong

Materials Engineering

Quantum dots have the ability to convert high energy photons into multiple lower energy photons. Down conversion of such high energy photons from sources such as UV light can be beneficial for applications on solar cells which waste much of the energy in the form of thermalization. To test this theory, a solar cell was hooked up to an Amprobe Solar Analyzer and tests were run to compare power output with and without the presence of quantum dots. Additionally, quantum dots were spin coated onto a glass wafer to determine its adhesion ability. Spectrometer readings were taken of the wafer …

Life Safety Report Xyz Office Building Denver Colorado, Keith Dix

Fire Protection Engineering: Culminating Experience Project Reports

This report is a Life Safety Analysis of the XYZ building in Colorado. It is a government contract facility and as such prefers that its real name and location not be utilized for this report. The building was assessed prescriptively using the 2009 International Building Code (IBC) and was found to be predominantly compliant with the code and the relevant referenced standards. The building was then assessed using a Performance Based Design in accordance with methodologies found and addressed in common fire protection literature. The Design Criteria chosen to determine tenability for the Required Safe Egress Time (RSET) were Carbon …

A Complete Streets Analysis And Recommendations Report For The City Of Bakersfield, California, Sherie L. George

Master's Theses

Driven by California State legislation, the City of Bakersfield is taking steps to introduce Complete Streets to the community. Working in collaboration with the Bakersfield City Planning Department, this project was prompted by the CIty's forthcoming update of its Metropolitan Bakersfield General Plan Circulation Element, with purpose to meet the California Complete Streets Act (AB1358) requirement to plan for a balanced, multimodal transportation network. This professional project intends to provide Bakersfield city officials, staff, and residents with tools and information needed to assess and implement Complete Streets within the Community.

The project provides in depth background research on the Complete …

Museum Signage Design And Implementation, Ali Weiss

Graphic Communication

The purpose of this study was to identify the essential elements of design for creating exhibit signage and to understand how museum visitors interact with signs and wayfinding systems. A survey was administered to museum/art directors and signage designers to gather knowledge from experts in the field about the signage design and implementation process. The participants answered questions concerning elements of design, wayfinding, digital versus print, and future signage innovations. The results of this research can be used to assist creators and implementers of museum signage in uniquely displaying information to a large audience and developing the most successful wayfinding …

Food System Planning Benefits & Recommendations For The City Of San Luis Obispo, Ca, Tessa Salzman

City and Regional Planning

No abstract provided.

Cultural Exposure For Cal Poly Orientation Programs: Training Orientation Leaders To Promote An Inclusive Environment And Creating Respect And Diversity Programming For Incoming Students, Sofia Rodriguez Mata

Liberal Arts and Engineering Studies

California Polytechnic State University in San Luis Obispo is home to the largest student run orientation program in the nation. The success of the program is due to a combination of student volunteer involvement, comprehensive topic coverage, campus and community involvement, and dedicated leadership. Topics to ensure student success are carefully researched, conceptualized, and implemented to construct programming for Soar and Week of Welcome. As an Executive Board Member, supervising a committee focused on student and student supporter transition and awareness topics, one has the option to specialize on projects. Improvement of respect and diversity training and programming needed to …

Motohud: Intelligent And Safe Navigational Data Presentation For Motorcyclists, Drew Bentz, William Budney

Computer Engineering

The system uses a GPS (Global Positioning System) sensor, Bluetooth modem, and OLED (organic light-emitting diode) screen to display navigational information to a motorcycle rider. Currently supported navigational information are speed and heading, with a framework in place for future turn-by-turn navigation. The system is powered by a lithium-ion battery pack and controlled by an Arduino Micro. For turn-by-turn navigation, an Android powered smartphone running our Android App is required. Our system aims to reduce safety hazards from having to tilt or move one’s head when trying to view speed on a motorcycle speedometer, which is usually mounted down by …

Meat Smoker, Rhianna Topp

Electrical Engineering

This Senior Project consists of designing and building a meat smoker. The design of this meat smoker incorporates knowledge of control systems, programming, hardware, and materials manufacturing. This smoker is made to allow the user an easy experience of smoking food. The smoker provides the user with a programmable temperature and timer. It also has an automatic wood chip loader as deemed necessary to keep the correct amount of smoke distributed. Lastly, this smoker has an automatic application of the user’s choice of liquid to the meat. By designing a smoker with these capabilities, an untrained person desiring to smoke …

Poly_Sense: Modular Wireless Sensor Network, Ian Andal, James Shirley, Haleigh Vierra

Electrical Engineering

Poly_Sense provides a platform for developers to use for a wide range of Wireless Sensor Network (WSN) applications. This modular system supports different sensing applications by allowing the developer to easily change between supported sensors through the graphical user interface (GUI). The platform also allows developers to integrate new sensors by writing device drivers which follow the platform’s guidelines and utilize the application programming interface (API). This low-power and cost-effective wireless solution not only provides a basic platform for entry-level developers, but also accommodates larger-scale applications.

Fault Tolerant Sequencer For The Naval Postgraduate School Cubesat Launcher (Npscul), Justin Jordan

Electrical Engineering

No abstract provided.

Loaded Shift Tester Sram, Nick Cox, Sam Shaffer, Michael Polka

Mechanical Engineering

This report details the design, manufacturing, and testing of a loaded shift tester for the SRAM Bicycle Corporation. The machine is used to perform developmental and qualification tests on various bicycle drivetrain components. Using SolidWorks, the design team created a solid model of the machine on the computer, then ordered and manufactured the parts required to build it. The machine was tested to ensure that all the parts worked together, and was finally delivered to SRAM when it was deemed ready.

Stent Graft Blush, Vanessa Barrett, Thomas Matzinger, Mike Morelli

Mechanical Engineering

In order to better understand Type IV endoleaks (“blush”), the Cal Poly Senior Project team GraftTest has developed a blush evaluation system able to mimic several of the aorta’s environmental parameters. Capable of both pressure and flow rate control, this bench top system accommodates Medtronic’s wide range of abdominal and thoracic aortic stent grafts. Having researched endoleaks, stent grafts, and numerous other factors affecting stent graft blush, a system was developed with the aim of assessing and comparing the performance of Medtronic’s stent grafts with regard to blush. Furthermore, this system has been designed to provide reliable and repeatable results …

Hoist To Transfer Athletes From Wheelchair Into A Kayak, Jennifer Batryn, Javier Mendez, Kyle Mooney

Mechanical Engineering

No abstract provided.

Design, Construction, And Evaluation Of A Portable Reusable Plastic Container Dumper, Kevin J. Lau

BioResource and Agricultural Engineering

This senior project discusses the design, construction, and evaluation of a portable RPC (Reusable Plastic Container) dumper. This RPC dumper is one piece of a citrus processing system to package citrus. Bee Sweet currently utilizes man power in order to dump its RPCs whereas this design will decrease the amount of man power needed to dump RPCs during high workloads.

The goal of this project was to design, construct, and test a custom fabricated RPC dumper that will decrease the number of people needed to dump RPCs and also the amount of damage on the oranges when being dumped from …

Micro Sprinkler Irrigation Design On Almonds, Scott Trinta

BioResource and Agricultural Engineering

This project is to design a micro sprinkler system with a cost analysis for a 17 acre field. This type of irrigation will allow for a more uniform distribution of water, with more water being beneficially used at low flow rates. This design should minimize unwanted runoff water and save the farmer money in the long run.

Design, Construction, Testing, And Evaluation Of Water Trough Float Valves, Chad Reenders

BioResource and Agricultural Engineering

No abstract provided.

Residential Fire Sprinkler Design For The Phi Kappa Psi Fraternity House, Nolan Frost

BioResource and Agricultural Engineering

This senior project discusses the design of a residential fire sprinkler system for a local fraternity house. The design follows NFPA 13D code, and contains design calculations, design drawings, material specifications, and cost analysis. The design was completed with the intention of being used for the installation of a fire sprinkler system in the house.