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2016

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Articles 4051 - 4080 of 9607

Full-Text Articles in Engineering

Repay – Revamping The Reimbursement Process, Esha Joshi Jun 2016

Repay – Revamping The Reimbursement Process, Esha Joshi

Computer Science and Software Engineering

Repay is a streamlined service for interviewees to be repaid by companies. It plays off the idea that many graduating college seniors endure when looking for a job: there is not a hassle-free process for interviewees to be repaid for expenses when traveling to and from an interview. The goal of this senior project was to develop a cross-platform application (iOS and web) with the hopes of improving the reimbursement process for both future employees and company HR representatives. Research suggests that a more simplistic process will allow candidates to receive their money quickly and enhance the overall image of …

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Table Text, Daniel Pino Jun 2016

Table Text, Daniel Pino

Computer Science and Software Engineering

No abstract provided.

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Micronaut: A 2d Action Side Scrolling Platformer For The Apple Tv, Christopher Michael Williams Jun 2016

Micronaut: A 2d Action Side Scrolling Platformer For The Apple Tv, Christopher Michael Williams

Computer Science and Software Engineering

Micronaut is a 2D side scrolling platformer video game application developed for the Apple TV with the tvOS SDK version 9.1. It explores human­computer interaction of platformer video games on the Apple TV and aims to give the player the most control to maximize enjoyment. Micronaut features five engaging levels with each level designed to focus on teaching the player the mechanics one at a time. Micronaut has been submitted and is undergoing submission for the Apple TV App Store at the time of this paper. Christopher Williams managed the software development and design, and Jacob Johannesen created the graphical …

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Wearable Ekg, Cale Hopkins, Tanner Papenfuss, Travis E. Michael Jun 2016

Wearable Ekg, Cale Hopkins, Tanner Papenfuss, Travis E. Michael

Computer Engineering

No abstract provided.

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Spectrochet: A Game, Lucas Gnos Jun 2016

Spectrochet: A Game, Lucas Gnos

Computer Engineering

No abstract provided.

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Wireless Mesh Networks For Scada Systems, Zachary Weisman Jun 2016

Wireless Mesh Networks For Scada Systems, Zachary Weisman

Computer Engineering

No abstract provided.

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Integrated Microsphere Whispering Gallery Mode Probe For Highly Sensitive Refractive Index Measurement, Hanzheng Wang, Lei Yuan, Cheol-Woon Kim, Jie Huang, Xinwei Lan, Hai Xiao Jun 2016

Integrated Microsphere Whispering Gallery Mode Probe For Highly Sensitive Refractive Index Measurement, Hanzheng Wang, Lei Yuan, Cheol-Woon Kim, Jie Huang, Xinwei Lan, Hai Xiao

Nuclear Engineering and Radiation Science Faculty Research & Creative Works

We report an integrated whispering gallery mode microresonator-based sensor probe for refractive index sensing. The probe was made by sealing a borosilicate glass microsphere into a thin-wall glass capillary pigtailed with a multimode optical fiber. The intensities of the resonant peaks were found decreasing exponentially (linearly in a log scale) with the increasing refractive index of the medium surrounding the capillary. The sensing capability of the integrated probe was tested using sucrose solutions of different concentrations and the resolution was estimated to be about 2.5 x 10-5 in the index range of 1.3458 to 1.3847. The integrated sensor probe …

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A Comparative Evaluation Of Vm Placement Techniques In Mapreduce Cloud, S D Madhu Kumar Jun 2016

A Comparative Evaluation Of Vm Placement Techniques In Mapreduce Cloud, S D Madhu Kumar

Manipal Journal of Science and Technology

Providing resources and services on demand, cost effectively and with high performance have been the need of the hour in the MapReduce cloud environment. While the size of data is growing rapidly due to impact of social media, scientific experiments, file logs created by different departments around the globe, etc., industry have started using this data for analysis and orient their work accordingly. Since the services are provided through virtualized resources, the placement of Virtual Machines (VMs) in cloud environment has a major impact on the performance of the service. Recently there have been a number of research activities on …

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Valorization Of Waste Sludge, S. Shrihari Jun 2016

Valorization Of Waste Sludge, S. Shrihari

Manipal Journal of Science and Technology

The amount of sludge produced in wastewater treatment plants is enormous. This sludge contains undesirable metals and other contaminants, and its disposal is expensive. Several attempts are being made towards valorization of this sludge, by using it in building and construction materials, reuse as adsorbent in water and wastewater treatment, as a coagulant and recovery of metals. This paper looks into some of the attempts at valorization of sludge.

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Gpu-Based Image Reconstruction For Real Time X-Ray Fluoroscopy With A Regular Detector Grid, Cholayya Niranjan Jun 2016

Gpu-Based Image Reconstruction For Real Time X-Ray Fluoroscopy With A Regular Detector Grid, Cholayya Niranjan

Manipal Journal of Science and Technology

This paper describes a strategy to parallelize and implement in real-time the multi-plane tomosynthetic image reconstruction algorithm used in common x-ray fluoroscopy systems such as the Scanning Beam Digital X-Ray (SBDX) system, on high performance computing platforms such as general purpose Graphical Processing Units (GPU). The authors contrast two different parallelizing schemata, namely, the detector centric and the pixel centric parallelization approaches under the specific assumption of a regular detector grid and separability of the x and y dimensions. In both of these schemes, the use of look-up tables (LUT) helps to reduce run time computations but requires effective memory …

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General Aviation Accidents Related To Exceedance Of Airplane Weight/Center Of Gravity Limits, Douglas D. Boyd Jun 2016

General Aviation Accidents Related To Exceedance Of Airplane Weight/Center Of Gravity Limits, Douglas D. Boyd

Publications

Obesity, affects a third of the US population and its corollary occupant weight adversely impacts safe flight operations. Increased aircraft weight results in longer takeoff/landing distances, degraded climb gradients and airframe failure may occur in turbulence. In this study, the rate, temporal changes, and lethality of accidents in piston-powered, general aviation aircraft related to exceeding the maximum aircraft weight/center of gravity (CG) limits were determined.

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On The Observability Of Bottom Topography From Measurements Of Tidal Sea Surface Height, Edward D. Zaron Jun 2016

On The Observability Of Bottom Topography From Measurements Of Tidal Sea Surface Height, Edward D. Zaron

Civil and Environmental Engineering Faculty Publications and Presentations

of whether features of the ocean bottom topography can be identified from measurements of water level is investigated using a simplified one-dimensional barotropic model. Because of the nonlinear dependence of the sea surface height on the water depth, a linearized analysis is performed concerning the identification of a Gaussian bump within two specific depth profiles, (1) a constant depth domain, and, (2) a constant depth domain adjoining a near-resonant continental shelf. Observability is quantified by examining the estimation error in a series of identical-twin experiments varying data density, tide wavelength, assumed (versus actual) topographic correlation scale, and friction. For measurements …

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Subsystem Failure Analysis Within The Horizon Simulation Framework, Ian M. Lunsford Jun 2016

Subsystem Failure Analysis Within The Horizon Simulation Framework, Ian M. Lunsford

Master's Theses

System design is an inherently expensive and time consuming process. Engineers are constantly tasked to investigate new solutions for various programs. Model-based systems engineering (MBSE) is an up and coming successful method used to reduce the time spent during the design process. By utilizing simulations, model-based systems engineering can verify high-level system requirements quickly and at low cost early in the design process. The Horizon Simulation Framework, or HSF, provides the capability of simulating a system and verifying the system performance. This paper outlines an improvement to the Horizon Simulation Framework by providing information to the user regarding schedule failures …

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Design And Testing Of A Novel Adhesion And Locomotion Method For Wall Climbing Vehicles, Jim R. Stefani Jun 2016

Design And Testing Of A Novel Adhesion And Locomotion Method For Wall Climbing Vehicles, Jim R. Stefani

Master's Theses

The objective of this project was to design, construct and test a wall climbing vehicle which uses a novel vacuum tread system for both adhesion and locomotion. The design and manufacturing of this proof of concept vehicle is detailed with particular emphasis on the design decisions that proved most impactful to the performance of both the vehicle and the tread system. Adhesion performance was characterized by a series of tests that validate the concept, but also identify improvements and design recommendations for future embodiments of the adhesion/locomotion system.

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Cal Poly Supermileage Electronic Fuel Injection, Alexander Pink Jun 2016

Cal Poly Supermileage Electronic Fuel Injection, Alexander Pink

Electrical Engineering

Cal Poly Supermileage is a student-run engineering club that builds prototype gasoline vehicles optimized maximum fuel-efficiency. To power their vehicles, the Supermileage team makes use of single-cylinder, 4-stroke, electronically fuel-injected (EFI) gasoline engines. This report details the development, iterative design & test cycles, and integration of an EFI system for the Supermileage club. This project develops an EFI system that interfaces to the most common types of sensors found in the low-power Supermileage-range of engines, including throttle-position sensors, manifold absolute pressure sensors, gear-tooth hall-effect sensors, variable-reluctance position sensors, engine coolant temperature sensors, intake air temperature sensors, and exhaust oxygen sensors. …

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Camera Stabilizer, Nathaniel Bryan, Sean Chappell, Danielle Williams Jun 2016

Camera Stabilizer, Nathaniel Bryan, Sean Chappell, Danielle Williams

Electrical Engineering

The goal of this project is to create an affordable camera stabilizer (the “stabilizer”) for consumers to use with cell phones or GoPro cameras. The stabilizer compensates for two axes, pitch and roll, as well as vertical movement. The system (currently only compatible with one cell phone model) is handheld and uses a combination of brushless DC motors, an Inertial Measurement Unit (IMU), and a microcontroller to compensate for the operator’s movements, stabilizing the phone for nonshaky, high quality video recording. The stabilizer provides a lowcost alternative to professional stabilization solutions employed in the production of featurelength films; the system …

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Solar Generation's Impact On Fault Current, Kody Heppner Jun 2016

Solar Generation's Impact On Fault Current, Kody Heppner

Electrical Engineering

California is paving the road for other states with the capacity of solar installations for residential and commercial entities. The added capacity of solar generation to the state's electric grid has an impact on power flow and fault currents. This project looks at the impact of solar installations on fault currents. Feeders with added residential rooftop solar and larger commercial solar installations may impact the system differently than a large, utility-sized solar installation. This project looks at the impact of both cases on the magnitude of fault current during many different fault types and locations that can occur within a …

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Critter Sitter: Weight Sensing Pet Door, Shelby Richardson Jun 2016

Critter Sitter: Weight Sensing Pet Door, Shelby Richardson

Electrical Engineering

Martin Kaliski is a typical pet owner. He currently houses both cats and a dog. In order to keep from having to constantly let his pets out in the middle of the night he has installed a pet door into his home. All was well and good until early one morning Martin woke up to the sound of his Pomeranian barking violently. He ran downstairs to see what the problem was. He not only found his dog standing there but also a wild raccoon. The raccoon had slipped into the house in the early morning and was rummaging through the …

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Integration Of Sel Relays To Provide Motor, Transmission Line, And Transformer Protection, Christopher Ewing, Bryce Keefer Jun 2016

Integration Of Sel Relays To Provide Motor, Transmission Line, And Transformer Protection, Christopher Ewing, Bryce Keefer

Electrical Engineering

The objective of this project is to familiarize the performers with the principles of operation of the Schweitzer Engineering Laboratories (SEL) protective relays in both normal and fault conditions. The SEL-587, SEL-311L and SEL-710 microprocessor-based relays are used to provide protection for a system composed of transformers, simulated transmission lines and a 3-phase induction motor. Each of these relays provides protection by sending a trip signal to local breakers upon sensing a fault condition. The SEL-587 provides overcurrent and differential protection for a 3-phase transformer, while the SEL-311L provides differential and distance protection for a transmission line, and negative sequence. …

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Exertion Control, Travis Taylor Jun 2016

Exertion Control, Travis Taylor

Electrical Engineering

Current wearable fitness devices give the user after-the-fact fitness data, but little real-time feedback. Exertion Control, a new wearable device, continuously measures the user’s heart rate, creates a heart rate target, and helps the user reach it. This project completes the senior design and master’s thesis requirements and contains two milestones. The senior design product continuously measures the wearer’s heart rate and logs it with a user-friendly interface. This data models the heart’s exertion response and recovery response. The master’s thesis device refines the closed control loop with the user to give them a workout optimized to fit their needs.

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Micro-Inverter Improvement For The Energy Harvesting From Exercise Machine Project, James Ralston Jun 2016

Micro-Inverter Improvement For The Energy Harvesting From Exercise Machine Project, James Ralston

Electrical Engineering

The Energy Harvesting from Exercise Machines (EHFEM) project at California Polytechnic State University consists of several different projects coming together to add human generated power to the grid. This project focuses on implementing a more efficient micro-inverter. The micro-inverter used to convert DC to AC voltage requires up to 5 minutes before the conversion process begins. This time lag significantly diminishes the power produced from an exercising individual. Research of micro-inverters approved by the CEC introduces desirable micro-inverters, available for use in California, to the EHFEM project. Testing the two most desirable micro-inverters found from research allows for quantifying of …

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Robotic Overbed Table, Jonathan Lantz Jun 2016

Robotic Overbed Table, Jonathan Lantz

Electrical Engineering

Traditionally overbed tables have simple and cheap designs, yet contain many disadvantages compared to the design proposed in this report. Disabled or bedridden persons, often require the use of a bedside table either in hospital environments or at home. Unfortunately, many modern overbed tables require the user to get out of bed and move in order to adjust and position the table. Incorporating a singlebutton control panel that allows the user to make adjustments and access other features independently, creates more accessible product. Integrated subsystems must control all motors and interfaces with an easy access control panel in order to …

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Rf Power Harvesting Rectenna, Jimmy Tang, Raymond Phu, Tom Geranios, Benjamin Muñoz Jun 2016

Rf Power Harvesting Rectenna, Jimmy Tang, Raymond Phu, Tom Geranios, Benjamin Muñoz

Electrical Engineering

Sustainability is one of today's primary engineering objectives. This principle involves system design that minimizes environmentally harmful energy emissions and resource consumption, and maximizes renewable energy practices [1]. Communication antennas transmit wireless signals that can be converted into usable energy. The Rectenna system described in this report, shown in Figure 1, was designed to accomplish this energy conversion, with -5dBm (316µW) minimum power at the rectifier input. Since typical ambient signal power is in the -70dBm (0.1nW) range, the proposed system could only convert passive, relatively high-power microwave band AC signals to DC. The Rectenna system was designed for 1.9GHz …

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Verifying Automated Prestressed Concrete Design Software For Mdot Bridge Design Standards, Hussein Kadhim Abood Khalaf Jun 2016

Verifying Automated Prestressed Concrete Design Software For Mdot Bridge Design Standards, Hussein Kadhim Abood Khalaf

Masters Theses

The design and analysis of bridges is a very critical and time consuming process. The automation of bridges design can save us time and effort, but the designer must have enough background with structural design of bridges in order to be able to analyze and understand the output of the automated design. This research shows the design and analysis of the superstructure of the US-27 Interchange Bridge at M-57 in Gratiot County of Washington Township, Michigan. The main purpose of this research is to establish a comprehensive design example following AAHTO LRFD Bridge Design Specifications and Michigan Bridge Design Manual. …

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An Investigation Of The Impact A Rov Competition Curriculum Has On Student Interest In Stem, Specifically Technology And Engineering, Daniel Gordon Bates Jun 2016

An Investigation Of The Impact A Rov Competition Curriculum Has On Student Interest In Stem, Specifically Technology And Engineering, Daniel Gordon Bates

Student Works

This research investigates the impact a Remotely Operated Vehicle (ROV) program has on student interest in, and perception of, technology and engineering (sTEm). ROV programs embed areas of science, technology, engineering and math (STEM) into their curriculum; however, emphasis for this study is placed on interest and perception of the "T" and "E" of STEM. Although there are many articles detailing the benefits of ROV programs, there is little empirical data documenting the impact on student interest and perception of sTEm. This study outlines the background of a few major ROV programs in the U.S.; specifically Utah Underwater Robotics (UUR), …

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Kobot: The Black Mamba's Farewell, Brian Luu, Andre Nguyen, Nathan Wicka Jun 2016

Kobot: The Black Mamba's Farewell, Brian Luu, Andre Nguyen, Nathan Wicka

Computer Science and Software Engineering

Our team entered the Cal Poly's annual Open House robotics competition, Roborodentia. Although our team stepped out of our comfort zone a bit (two Computer Science majors and an Applied Math major), we found the entire experience to be very enriching. In honor of this past NBA season being the last for our favorite basketball player Kobe Bryant, we dedicated the robot's design to the Black Mamba.

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The Effect Of Projectile Nose Shape On The Formation Of The Water Entry Cavity, Jeremy Conrad Ellis Jun 2016

The Effect Of Projectile Nose Shape On The Formation Of The Water Entry Cavity, Jeremy Conrad Ellis

Theses and Dissertations

This research focuses on the effect of several convex and concave nose shapes on cavity formation for both hydrophilic and hydrophobic projectiles. It specifically investigates the effect of convex shape on the threshold velocity for cavity formation as well as the effect of concave shapes on cavity formation in terms of impact velocity, geometry of the concave shape and wettability of the projectile. For the convex cases, the streamlined axisymmetric shape significantly increases the threshold velocity when cavities form and is most pronounced for the ogive and cone. The study demonstrates that measuring the wetting angle and impact velocity is …

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Roborodentia Robot (Amazon Prime), Alec Cheung Jun 2016

Roborodentia Robot (Amazon Prime), Alec Cheung

Computer Science and Software Engineering

Roborodentia is an annual autonomous robotics competition sponsored and hosted by Cal Poly. In the 2016 competition, participants are to design a robot that scores the most points by gathering rings from marked supply pegs and placing them onto marked scoring pegs. For Roborodentia I designed, constructed, and programmed a robot, named Amazon Prime, to compete.

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Influence Of Socio-Demography And Operating Streetscape On Last-Mile Mode Choice, M. Meng, P. P. Koh, Y. D. Wong Jun 2016

Influence Of Socio-Demography And Operating Streetscape On Last-Mile Mode Choice, M. Meng, P. P. Koh, Y. D. Wong

Journal of Public Transportation

This study investigated how personal and operational factors (travel distance and streetscape) influence traveler mode choice decisions for the last-mile home-bound trip stage from rail transit stations. Personal factors include the socio-demography of travelers, and attributes of the streetscape include the built environment (degree of areal development), prevalence of cycling, availability of short-range transport modes, and walking/cycling infrastructure. Interviewers randomly intercepted pedestrians to administer a mode choice survey at five rail transit station exits and engaged all available cyclists at bicycle parking areas in the vicinity of stations in Singapore. A multimodal logit regression model revealed a significant relationship between …

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Commuting By Customized Bus: A Comparative Analysis With Private Car And Conventional Public Transport In Two Cities, Tao Liu, Avishai Ceder, Romain Bologna, Benjamin Cabantous Jun 2016

Commuting By Customized Bus: A Comparative Analysis With Private Car And Conventional Public Transport In Two Cities, Tao Liu, Avishai Ceder, Romain Bologna, Benjamin Cabantous

Journal of Public Transportation

Commuting is a major component in the creation of traffic and travel problems. Thus, more attention should be given to its practice. Private car (PC) transport, the dominant mode of commuting in most of the world’s major cities, creates traffic-related social problems such as traffic congestion, traffic fatalities and injuries, and adverse environmental impacts. This study proposes a novel commuting travel mode—a customized bus (CB) transit system that provides advanced, personalized, and flexible demand-interactive minibus service using Internet, telephone, and smartphone apps. The aim was to assess and compare the performance of CB with PC and with conventional public transport …

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