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Articles 1 - 30 of 483
Full-Text Articles in Engineering
Differential Regulation Of Articular Cartilage Tensile Properties By Igf-1 And Tgf-Β1 During In Vitro Growth, M. E. Stender, N. T. Balcom, B. Berg-Johansen, K. J. Dills, D. Dyk, S. J. Hazelwood, A. C. Chen, R. L. Sah, S. M. Klisch
Differential Regulation Of Articular Cartilage Tensile Properties By Igf-1 And Tgf-Β1 During In Vitro Growth, M. E. Stender, N. T. Balcom, B. Berg-Johansen, K. J. Dills, D. Dyk, S. J. Hazelwood, A. C. Chen, R. L. Sah, S. M. Klisch
Mechanical Engineering
No abstract provided.
Cplop - Cal Poly's Library Of Pyroprints, Kevin Webb
Cplop - Cal Poly's Library Of Pyroprints, Kevin Webb
Computer Engineering
California Polytechnic Library of Pyroprints, CPLOP, is a web driven data-base application that stores data from the biology’s departments E. coli Pyrosequencing project. Some of this data was stored in Excel datasheets, while data from the pyrosequencing machines was stored as just a list of random .xml files. There was no useful way to organize and store the massive amounts of data from multiple file sources in one location, nor to perform the complicated searches and comparisons that the project requires. CPLOP’s primary goal is to store such data in three organized tables that relate to one another. It was …
Wireless Solar-Powered Thermal Imaging Camera, Andy Bonk, Billy Mcvicker, Jacob Richardson
Wireless Solar-Powered Thermal Imaging Camera, Andy Bonk, Billy Mcvicker, Jacob Richardson
Mechanical Engineering
Creation of a mounted wireless self-powered thermal imaging camera system.
Golf Club Quality Control Device, David Mcdermott, Mark Severy
Golf Club Quality Control Device, David Mcdermott, Mark Severy
Mechanical Engineering
No abstract provided.
Historic Calculator Project, Will Harris, Dan Marioni, Kevin Webb, Chad Williams
Historic Calculator Project, Will Harris, Dan Marioni, Kevin Webb, Chad Williams
Mechanical Engineering
The Deutsches Museum of Munich, Germany requested add-on components to their mechanical calculator exhibit. The end-goal is to produce an interactive 3D model in software to demonstrate the functions of the Braun-Vayringe Machine (BVM). There will be four students working on this project at California Polytechnic State University, San Luis Obispo: two mechanical engineers (Dan Marioni and Will Harris) and two computer engineers (Chad Williams and Kevin Webb).This project involves the coordination of three facilities; the Deutsches Museum, and the Mechanical and Computer Science Departments of Cal Poly. The name of the project is known as the Historic Calculator Project …
Requirements Specification For Dsic: Distribution System For Information And Collaboration, Alex Abrahamian
Requirements Specification For Dsic: Distribution System For Information And Collaboration, Alex Abrahamian
Computer Science and Software Engineering
There seems to exist an invisible barrier between people that should be connected but for whatever reasons (don't hang out in the same circles, don't go to the same meetings, or are geographically separated) haven't met each other yet.
Normally these people will only meet when others bring them together or they are thrown together on a project. DSIC aims to preempt the person discovery process by allowing a way for people to post ideas, events, and other collaborations in a single place that can then be searched by other users.
The system utilizes postings, user profiles, and a tagging …
Review Of Package Warning Labels And Their Effect On Consumer Behaviour With Insights To Future Anticounterfeit Strategy Of Label And Communication Systems, John Spink, Jay Singh, S. Paul Singh
Review Of Package Warning Labels And Their Effect On Consumer Behaviour With Insights To Future Anticounterfeit Strategy Of Label And Communication Systems, John Spink, Jay Singh, S. Paul Singh
Industrial Technology and Packaging
This paper investigates and reviews literature regarding a range of topics important to the research question – the themes apply across all the topics. The topics include label and package warnings, including tamperevident features, to review their effect on the consumer behaviour of changing usage or purchase decisions. This information was then applied to gain insight into anticounterfeit product/package efforts. Based on this research, it appears that there is value for brand marketers to enhance their anticounterfeit efforts and consumer confidence by utilizing warning labels and information labels on their labels or packages. Currently, consumer perception of a domestic counterfeit …
City Of Industry: An Historical Precedent And Its Concrete Effects, Christina A. Hernandez
City Of Industry: An Historical Precedent And Its Concrete Effects, Christina A. Hernandez
Liberal Arts and Engineering Studies
No abstract provided.
Wavelength Dependence Of Transverse Mode Coupling With/Without E-Block Of Gan Laser Cavity, K. Lal, G. Chavoor, Xiaomin Jin
Wavelength Dependence Of Transverse Mode Coupling With/Without E-Block Of Gan Laser Cavity, K. Lal, G. Chavoor, Xiaomin Jin
Electrical Engineering
Transverse mode wavelength dependence in the gallium nitride (GaN) laser cavity is a new topic. Modal analysis simulations are run to optimize the blue GaN-based laser diode with a wavelength of 400, 430, and 460 nm. It is shown that the optical confinement factor (OCF) has a strong dependence on wavelength of emission and electron-block (e-block) thickness. The OCF can be changed from 4.9% at a 460-nm wavelength to 7.6% at 400 nm, which is a 55% difference. The effect of adding an e-block layer of different widths is also investigated with results showing that an e-block layer can change …
The Sources Of Heat Generation In Vibrothermography, Jeremy Renshaw, John Chen, Stephen Holland, R. Bruce Thompson
The Sources Of Heat Generation In Vibrothermography, Jeremy Renshaw, John Chen, Stephen Holland, R. Bruce Thompson
Mechanical Engineering
Vibrothermography, or sonic IR, is a nondestructive evaluation technique used to find surface and near surface defects—such as cracks and delaminations—through observations of vibration-induced heat generation. This method has significant interest as an industrial inspection method, however, a lack of understanding of the fundamental physics governing the heat generation process has limited its application despite extensive theoretical, numerical simulation, and experimental work. Significant theoretical and numerical simulation work has been performed, but has yet to be rigorously verified experimentally. This paper presents experimental verification of the sources of heat generation in vibrothermography; specifically friction, plasticity, and viscoelasticity. Specific experimental evidence …
Radiation In The Space Environment, Sally Hermansen, Jennifer Shatts
Radiation In The Space Environment, Sally Hermansen, Jennifer Shatts
Aerospace Engineering
No abstract provided.
Aircraft Longitudinal Control Experiment, Dustin Schaff
Aircraft Longitudinal Control Experiment, Dustin Schaff
Aerospace Engineering
This paper describes the design, fabrication, and analysis of an experiment that demonstrates the stability and control system characteristics of an aircraft constrained at the center of gravity in an air flow field. Given a set of basic requirements, the physical system (including the airframe, wings, tail, and mounted ball bearing) was designed, modeled, and manufactured. With the aircraft placed in front of a fan and allowed to rotate freely with the ball bearing, an angular rate sensor and servo motor to the deflect the elevator may be connected to any computer using an analog/digital Data Acquisition (DAQ) device to …
Wind Tunnel Modeling Of Small Electric Uav Power System Performance, Nathan R. Phelps
Wind Tunnel Modeling Of Small Electric Uav Power System Performance, Nathan R. Phelps
Aerospace Engineering
This report details the design and construction of a testing apparatus for characterization of small electric aircraft power systems designed for use in the California Polytechnic State University San Luis Obispo Aerospace Engineering department’s subsonic wind tunnel. This apparatus was constructed and implemented with the goal of determining system and component efficiencies of an entire power system using RC Aircraft components as an analog for systems currently in use in the current generation of small electric UAV’s in service with the US Armed Forces. The goal of these experiments was to determine where improvements in the system architecture can be …
Access|Closure Balloon Catheter Redesign Project, Keenan Bamburg, Yvette Castillo, Elizabeth Eskildsen
Access|Closure Balloon Catheter Redesign Project, Keenan Bamburg, Yvette Castillo, Elizabeth Eskildsen
Mechanical Engineering
No abstract provided.
Raytheon Uav Launcher, Chad Amonn, Spencer Chin, Alexander (Alex) Deuitch, Mark Jastrzebski
Raytheon Uav Launcher, Chad Amonn, Spencer Chin, Alexander (Alex) Deuitch, Mark Jastrzebski
Mechanical Engineering
No abstract provided.
Challenger J Hockey Prosthesis Final Design Report, Ryan Bakker, Spencer Noe, Christopher Perkins
Challenger J Hockey Prosthesis Final Design Report, Ryan Bakker, Spencer Noe, Christopher Perkins
Mechanical Engineering
The content of this report is withheld as confidential. QL+ is the owner of the intellectual property created throughout the duration of this project. Dr. Tom Mase (mechanical engineering) maintains a full copy of the report and intends to disseminate it upon completion of the necessary intellectual property protection measures.
Robotic Turret, Daniel Romero, Matthew (Matt) Martelle, Scott Mullens, Rachel Diamant
Robotic Turret, Daniel Romero, Matthew (Matt) Martelle, Scott Mullens, Rachel Diamant
Mechanical Engineering
No abstract provided.
Golf Prosthesis Final Design Report, Joseph Barcus, Lauren Wilson, Ryan Satcher
Golf Prosthesis Final Design Report, Joseph Barcus, Lauren Wilson, Ryan Satcher
Mechanical Engineering
A prosthetic attachment designed to allow an upper extremity bilateral amputee to golf.
Ergonomic Lifter, Bejan Brian Banihashemi, Dylan James Schockemoehl, Andrew Ouellet
Ergonomic Lifter, Bejan Brian Banihashemi, Dylan James Schockemoehl, Andrew Ouellet
Mechanical Engineering
No abstract provided.
Floating Tube Heat Exchangers, Patrick Harris, Christina Gedeon, Leonel Medrano, George Milam
Floating Tube Heat Exchangers, Patrick Harris, Christina Gedeon, Leonel Medrano, George Milam
Mechanical Engineering
With the slowly diminishing supply of fossil fuels across the world and the heightened risk of carbon dioxide pollution leading to global warming, a shift towards renewable energy is gaining momentum. Recent advances in wind and solar power technology have increased the power density of alternative sources while decreasing the cost per kilowatt-hour, but the technology has not become advanced enough yet for large scale deployment. Combined Power Cooperative has developed a revolutionary design for a concentrated solar power plant that utilizes Fresnel reflectors and a large body of water in which to install them. In addition to being low-cost, …
Strider, George Cummings, Brian Kreidle, Ricky Lee, Clark Steen
Strider, George Cummings, Brian Kreidle, Ricky Lee, Clark Steen
Mechanical Engineering
No abstract provided.
Auto-Tuning Antenna, John Chen, Jennifer Tighe
Auto-Tuning Antenna, John Chen, Jennifer Tighe
Electrical Engineering
Radio transmitters and antennas have differing impedances at the output and feedpoint, depending on frequency. Modern antenna tuning methods involve manual or automatic resistance and reactance network adjustment to match transmitter and antenna impedance. This reduces power reflections to the transmitter, but introduces losses and prevents full transmitter power from being radiated at the antenna. This project utilizes a variable length antenna element to tune and match transmitter and antenna impedances, allowing efficient power transfer to the antenna. The antenna length varies from 0 to 30.5 inches. The method involves an RF signal with a maximum power of 2 watts …
Effect Of Size Reduction Parameters In Pharmaceutical Manufacturing Process, Brian Breneman
Effect Of Size Reduction Parameters In Pharmaceutical Manufacturing Process, Brian Breneman
Biomedical Engineering
Within pharmaceutical manufacturing, size reduction is one of the most extensively used and vital unit operations. Size reduction in tablet production is achieved primarily through milling procedures, which allows for attaining product uniformity, optimizing product solubility, and improving bioavailability. Additionally, powders with a narrow range of size distribution can obviate problems in downstream processing as pertains to blending, compression, and coating as well as improve drug performance1. The purpose this study was to characterize the effect of various size reduction parameters as a result of the pharmaceutical milling process on a lactose wet granulation formulation and chemically active …
Engine Simulation And Diagnostic Test Bed: Final Design Report, Jeff Lewis, Cody Scott, Todd Smith
Engine Simulation And Diagnostic Test Bed: Final Design Report, Jeff Lewis, Cody Scott, Todd Smith
Mechanical Engineering
The San Luis Obispo High School Automotive Technology Shop has a 1991 Buick V-6 Engine which uses the OBD-I (On-Board Diagnostics, generation one) standard for diagnostic testing and troubleshooting. In order to expand the capabilities of the Automotive Technology program and allow students to gain first-hand experience troubleshooting older OBD-I engines, the shop has a need for this engine to become part of a diagnostic and troubleshooting test bed. Some of the diagnostic tests the students will perform include checking cylinder pressure, monitoring coolant system temperatures, interpreting error codes from the OBD-I system, and conducting enhanced smog testing. All of …
Wiihopp, Jeff Christian, Ben Hoselton, Derek Simon
Wiihopp, Jeff Christian, Ben Hoselton, Derek Simon
Mechanical Engineering
Childhood obesity is becoming a growing problem in the United States. According to the CDC, childhood obesity has more than tripled in the past 30 years [7]. It can lead to health problems previously reserved for adults, such as diabetes, high blood pressure, and high cholesterol. For the team WiiHopp project, we plan to turn a JumpSport mini-trampoline into a controller for the Nintendo Wii console. The hope is to help turn the problem of video games and the laziness surrounding them into an active solution to combat the problem of childhood obesity.
Our goal is to produce an add-on …
Predicting The Acoustic Response Of The Golf Club & Ball Impact Using Finite Elements And The Boundary Element Method, Scott Henry Moreira
Predicting The Acoustic Response Of The Golf Club & Ball Impact Using Finite Elements And The Boundary Element Method, Scott Henry Moreira
Master's Theses
An improved and repeatable method for meshing golf club heads using finite elements in TrueGrid® was developed. Using solid brick elements through the thickness of the club head instead of shell elements better represents the many thickness variations throughout each section of a club head. This method also results in a high quality mesh at the center of the club head sections while still maintaining high quality at the edges. A simulation procedure was also developed to predict the acoustic pressure at a designated point in an acoustic medium of a golf club and ball impact using the BEM and …
Impedance-Based Detection Of Tissue Using A Multi-Electrode Device, Shane Killian Fleshman
Impedance-Based Detection Of Tissue Using A Multi-Electrode Device, Shane Killian Fleshman
Master's Theses
Melanoma skin cancer is the abnormal growth of the melanocytes – the pigmented cells located in the epidermis. The current gold standard diagnostic technique for determining whether a lesion is cancerous involves subjectively examining suspicious lesions and performing an invasive biopsy to confirm melanoma. This method may neglect some lesions or cause scarring from biopsies that turn out to be benign. Thus, impedance-based detection using a multi-electrode device was investigated as a noninvasive technique to diagnose melanoma skin cancer. The multi-electrode device was designed with 8 equally spaced Ag/AgCl electrodes surrounding one central electrode at a 5 mm radius. The …
Dimensional Stability Of Geosynthetic Clay Liners In Landfill Applications, Gregory R. Olsen
Dimensional Stability Of Geosynthetic Clay Liners In Landfill Applications, Gregory R. Olsen
Master's Theses
An investigation was conducted related to the dimensional stability of geosynthetic clay liners (GCLs) in landfill applications. Multiple occurrences of panel separation of overlap seams in GCLs have been documented; however, explanation for the relative contribution of various mechanisms causing shrinkage has been limited. A systematic test program was conducted to determine the effects of a variety of conditions on GCL dimensional stability.
Effects of initial moisture content, permeant type, and overburden pressure were tested by subjecting various GCL products to wet-dry cycles and measuring the dimensional change with each cycle. Different GCL types were each tested under various combinations …
Modeling And Analysis Of A Four-Switch Buck-Boost Dynamic Capacitor, Oscar Plasencia
Modeling And Analysis Of A Four-Switch Buck-Boost Dynamic Capacitor, Oscar Plasencia
Master's Theses
Modern electric power utilities are facing a variety of challenges introduced by the increasing complexity of their operation, structure, and consumer loads. One such challenge has been to supply the ever growing demand for reactive power which is essential for grid support. For this reason dynamic VAR technologies are becoming much more important to modern day power systems. A recent dynamic VAR technology known as the Dynamic Capacitor offers full quadrant capacitive VAR control through the combination of AC/AC buck and boost cells. This paper introduces a new topology deemed the “Four-Switch Buck-Boost Dynamic Capacitor” which promises to combine the …
Impact Of Collateral Enlargement On Smooth Muscle Phenotype, Alexander Jerome Bynum
Impact Of Collateral Enlargement On Smooth Muscle Phenotype, Alexander Jerome Bynum
Master's Theses
Peripheral Artery Disease is a very serious disease characterized by an arterial occlusion due to atherosclerotic plaques. In response to an arterial occlusion, arteriogenesis occurs, causing smooth muscle cells to transition from a contractile to synthetic state. Also following an arterial occlusion, functional impairment was seen in the collateral circuit. An immunofluorescence protocol was developed in order to assess the impact of collateral enlargement (arteriogenesis) on smooth muscle phenotype at various time points. Smooth muscle α-actin was used to mark all smooth muscle cells, Ki-67 was used to label proliferating smooth muscle cells, and a fluorescent nuclear stain was used …