Digital Commons Network^™

Physical Activity Patterns Using Accelerometry In The National Weight Control Registry, Victoria A. Catenacci, Gary K. Grunwald, Jan P. Ingebrigtsen, John M. Jakicic, Michael D. Mcdermott, Suzanne Phelan, Rena R. Wing, James O. Hill, Holly R. Wyatt

Kinesiology and Public Health

The National Weight Control Registry (NWCR) was established in 1993 to examine characteristics of successful weight-loss maintainers. This group consistently self-reports high levels of physical activity. The aims of this study were to obtain objective assessments of physical activity in NWCR subjects and compare this to physical activity in both normal-weight and overweight controls. Individuals from the NWCR (n = 26) were compared to a never‑obese normal-weight control group matched to the NWCR group’s current BMI (n = 30), and an overweight control group matched to the NWCR group’s self-reported pre-weight-loss BMI (n = 34). Objective assessment of physical activity …

Processing Pdms Gecko Tape Using Isopore Filters And Silicon Wafer Templates, Boris Luu

Materials Engineering

Gecko tape was processed through nanomolding involving two types of templates. One template was a Millapore Isopore polycarbonate membrane filter and the other template was an n-type silicon wafer processed to include four different pore diameters. These pore diameters were 20, 40, 80, and 160 microns. AutoCAD was used to design to a mask to be used later during photolithography. Two n-type wafers were sputtered with aluminum, underwent photolithography, and then etched using reactive ion etching. A template was placed into a Petri dish and Sylgard 184 polydimethylsiloxane (PDMS) was poured on the template. Once the PDMS cured,   the 1 …

Oxidation Kinetics Of Silver Thin Films For Antimicrobial Applications In The Health Care Industry, Sean D. Morham

Materials Engineering

To determine if varying city water qualities from around the United States can support a developing “oxidation corrosion of silver thin films” method of creating aqueous ionic silver solutions for the anti-microbial treatment of healthcare linens, a test was devised holding all variables constant with the exception of water quality parameters. This corrosion style test was done in order to assess a pass/fail criteria of 25 ppb ionic silver concentration in the aqueous solutions which resulted from the corrosion of silver thin film coated substrates. Above 25 ppb being a pass, below 25 ppb being a fail. While varying the …

Effects Of Social Media On Human Emotion, Jackie Woods, Megan Potmesil

Communication Studies

No abstract provided.

Assessing The Park Visitor Behavior At Los Osos Skate Park, Kristen Mcclay

Recreation, Parks, and Tourism Administration

Skateboarding began in California over 50 years ago and has grown internationally.  The purpose of this study was to assess the behavior of park visitors at Los Osos Skate Park.  This park was fully supervised and this study can serve as a tool for park management.  The researcher observed the skate park during operating hours throughout April 2011.  The subjects of this study were park visitors actively skateboarding, or passively watching.  The dominant demographic for skateboarders were adolescent males.  This study found peak times were weekdays afterschool, adult park visitors display the most positive behavior, and middle school park visitors …

To Assess The Interest Level For An Intramural Sports Program At Allan Hancock College, Elysha Mclain

Recreation, Parks, and Tourism Administration

Participation in intramural sports has been known to reduce stress levels, build self confidence, improve leadership skills, and promote good sportsmanship.  This study examined the interest level for a potential intramural sports program at Allan Hancock College (AHC).  Other factors such as the time of day, activity, and the financial obligation students and faculty were willing to pay for participation were analyzed.  In the spring of 2011, a self-administered questionnaire was administered to AHC students and faculty.  Participants indicated a high level of interest for intramural sports.  Almost half of the sample population indicated a desire to pay $25 a …

Trends In Multisensory And Interactive Magazine Inserts, Jennifer Titcomb

Graphic Communication

The purpose of this study was to identify trends in multisensory and interactive magazine inserts. The study looked at the different features to see what is used most frequently and identified any major trends with the technologies. These implementations would ensure the presence of printed magazines. Additional knowledge was gained by being more observant of the different ways audio/ video chips and variable data are being used within magazine advertising. Ideas of new applications were formed from gathering of this information.

The study was conducted using historical research, elite and specialized interviews and content analysis to identify trends. Tables were …

Sustainable Multi-Cultural Packaging, Michelle Onizuka

Graphic Communication

No abstract provided.

Improving Cal Poly Space Systems Infrastructure, Tyler Richier

Industrial and Manufacturing Engineering

The goal of this project was to increase the usable space for the club Cal Poly Space Systems to work on its projects, improve the safety for its members, and reduce the time it takes to manufacture its products. The project demonstrated the effectiveness of 5S in improving a workspace. Club members were measurably more comfortable in the work environment and spent less time looking for tools. Current rooms were made more professional by ridding the workplace of non-valued items and finding sensible locations for high-traffic items. Additional rooms were added and they should indisputably support club projects the upcoming …

Cardiac Staging Facility Workflow Redesign, Ryan Chang

Industrial and Manufacturing Engineering

This study analyzes and proposes Cardiac Staging nurse workflow improvements along with a new Cardiac Staging facility design at French Hospital. Currently, patients spend an expected 125 minutes in Cardiac Staging. It was found that 60% of the time in Cardiac Staging was spent waiting to be transferred into the Cath Lab. The following Industrial Engineering methods were utilized to eliminate waste in staging and design a new staging area:

 Use of Lean and Six-Sigma tools to recommend new patient arrival time

 Manufacturing product scheduling to reduce patient wait time

 Use of facility redesign techniques to improve …

The Lost Voyage Of Amazonia: Concept Proposal, Eric Davis, Ryan Inouye

Liberal Arts and Engineering Studies

No abstract provided.

Temporary Urbanism: Definitions, Trends And A Research-Based Design Proposal, Paula Chiu

City and Regional Planning

No abstract provided.

The Salinas' Chinatown Outreach Program, Danielle Lam

City and Regional Planning

No abstract provided.

Identifying Potential Impacts For The Alternative Downtown Santa Maria Specific Plan, Ian Fronczak, Solomon So

City and Regional Planning

No abstract provided.

Zoning Code Amendment: A Community Garden Plan For Santa Maria, Amy Scott

City and Regional Planning

No abstract provided.

San Miguel Alleyway Redesign, Jonathan Emlen, Omar Salazar

City and Regional Planning

No abstract provided.

Mr. Robot: A Roborodentia Contestant, Stephen Berry, Jamie Nease

Computer Engineering

Roborodentia is an annual robotics competition held during Open House at California Polytechnic State University, San Luis Obispo. Each year, students construct autonomous robots which compete head-to-head to score the most points. This report will give an overview of the competition and the details of our robot.

An Investigation Into Ultrasonic Communication For Near-Body Networks, Eric Joshua Escudero Jr., Gursewak Singh Rai

Electrical Engineering

The following report presents a study of body-area, free-space ultrasonic communication system. Two analog communication systems are investigated. The initial communications system setup relies upon the amplitude modulation (AM) techniques to transmit the signal. Such a system is prone to noise since the amplitude of the signal is directly affected by distance and the signal strength will deteriorate. The secondary communication system involves utilizing frequency modulation (FM). This method avoids the issue of losing information due to amplitude deterioration, but encounters delay issues. The main hardware components used in the approach outlined include ultrasonic transducers (UTs) used for both transmitting …

Solar Powered Electric Clothes Dryer, Roger Mai, Alan Swe

Electrical Engineering

Appliances that consume the most energy in a household usually involve heating, and an electric clothes dryer is one such appliance, consuming up to 4KW of power. The most environmentally friendly way is to hang clothes outside to dry, a natural solar and wind powered method, but unfortunately most people are unable to do so as some neighborhood communities do not allow the hanging of laundry outside as it is regarded as “unsightly”, for example. This project aims to provide an alternate solution to the wall-powered electric clothes dryer by designing one which operates entirely off the grid.

Automated Adaptive Feeding Device, John Dolcini, Stephanie Smith, Pavel Yakovlev

Mechanical Engineering

No abstract provided.

Cal Poly Human Powered Helicopter, Josiah Auer, Eric Behne, Dave Berry, Rebecca Hennings, James Koch, Ian Marquardt, Josiah Mayfield, Sean Miller

Mechanical Engineering

The following report encompasses the Cal Poly Human Powered Helicopter team’s efforts during the 2010-2011 academic year. The intention of this project is to further the knowledge of human powered helicopter design and to validate an ideal configuration through experimental tests and analysis. 

A. Background

The Sikorsky Prize offered by the American Helicopter Society has been the catalyst for many attempts at Human Powered Helicopter (HPH) flight. The requirement to win the prize is a continuous, human powered flight of more than 60 seconds that stays within a 10 meter square box and reaches an altitude greater than 3 meters …

Portable Solar Desalination System, Genaro Sanchez, Alan Galarza, Erick Del Real

Electrical Engineering

Clean water and reliable energy can be difficult to obtain in remote locations such as desert villages, secluded islands, and other places where no fresh water can be found. The primary goal for this project is address these problems by implementing a portable desalinization plant system that is to be powered by solar energy PV system as the main energy source.

Terrain Classification For Autonomous Rmax Helicopter Search And Rescue, Erin West

Electrical Engineering

No abstract provided.

60 Watt Embedded Solar Cell Umbrella, Matthew Devoss

Electrical Engineering

No abstract provided.

A Self-Oscillating Parallel Audio Amplifier, Max Ullrich

Electrical Engineering

A design for a parallel audio amplifier attempts to
improve on existing amplifier topologies by combining a high fidelity linear analog amplifier in parallel with a high efficiency Class-D switching amplifier. A working model demonstrates self-oscillation according to theory but low efficiency results prevent the amplifier from becoming a good alternative in low-power
applications.

Solar Instrumentation Lab, Rene Canedo Iii, Rong Gui Chen

Electrical Engineering

This project is a mobile platform that will allow experiments on different solar panels to be done easily while keeping the cost of the lab to a minimum. California Polytechnic State University’s motto is ‘learn by doing’ and this lab structure will allow students to get practical experience with photovoltaic cells and the instruments that are required to take measurements. The solar instrumentation lab is a potential hardware lab for the electrical engineering department’s Sustainable Electric Energy Conversion class EE 420 and Solar-Photovoltaic Systems Design EE 520. This group took the current solar structure as a base for the lab’s …

Cal Poly Power System Design & Analysis, Minesh D. Patel

Electrical Engineering

The scope of this project encompasses the design and analysis of the Cal Poly Power System at the distribution level using the SKM software environment. The purpose is to accurately model the power system in software so theoretical calculations and analysis can be executed. This requires sufficient preliminary research to obtain data for the main buildings on campus, sound interpretation of one line diagrams, designing the system within the software using realistic values and then performing analysis to model real world situations.  The data collected is under maximum load conditions for a specified time period using medium voltage parameters. The …

Exercise Bicycle Dc-Dc Converter For The Energy Harvesting From Exercise Machines Project, Ryan Rickard, Logan Stowe

Electrical Engineering

Project is a continuation of previous projects that seek an efficient DC to DC converter for the existing exercise bicycle system created by Mechanical and Electrical Engineering students. This DC-DC converter is to integrate with the wide range of DC voltages produced by the bicycle in order to produce a constant optimal voltage for charging a car battery. This converter will boost voltages when the bicycle outputs below the optimal voltage and buck voltages when above. The converter will take EHFEM one step closer to its overall and final goal of harvesting energy from the exercise machines in Cal Poly’s …

Programmable Solid State 12ax7 Triode Gain Stage, Ian Campbell

Electrical Engineering

This project demonstrates the viability of vacuum tube replacements made from solid state technology and programmable logic. A collection of operational amplifiers, digital converters and a field programmable gate array (FPGA) achieve this goal. The project emulates a 12AX7 vacuum tube triode as it would operate in a Fender Champ guitar amplifier. While the prototype works specifically with the Fender Champ, minor modifications could provide the versatility for operation in different amplifiers, including high end vintage hi-fi equipment. The addition of a micro controller into these amplifiers allows for the use of digital filtering and effects while not requiring modifications …

Rfid Techniques For Passive Electronics, Ryan Behr, David Cobos

Electrical Engineering

No abstract provided.