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Articles 8161 - 8190 of 42547
Full-Text Articles in Entire DC Network
Assembling And Characterizing The Efficiency Of An Injection Locked Laser System For Cold Neutral Atom Optical Traps, Alexandra Papa Crawford
Assembling And Characterizing The Efficiency Of An Injection Locked Laser System For Cold Neutral Atom Optical Traps, Alexandra Papa Crawford
Physics
Creating a quantum computer requires a system of particles that can be well-controlled to achieve quantum operations. We need a large array of these particles – called qubits – with long coherence times, which can be initialized, operated on by single and two qubit gates, and read out. For neutral atoms, the qubit states are stable ground states that interact minimally with the environment, leading to long coherence times. Experimentally, the qubits are manipulated using carefully timed laser beam pulses with controlled frequency and intensity, but the outstanding issue for optically trapping cold atoms is finding a light pattern that …
Laser Triangulation Sensor, Jake Finelt, Kian Gruszczynski, Greg Mclorg
Laser Triangulation Sensor, Jake Finelt, Kian Gruszczynski, Greg Mclorg
Mechanical Engineering
Statement of Disclaimer: Since this project is a result of a class assignment, it has been graded and accepted as fulfillment of the course requirements. Acceptance does not imply technical accuracy or reliability. Any use of information in this report is done at the risk of the user. These risks may include catastrophic failure of the device or infringement of patent or copyright laws. California Polytechnic State University at San Luis Obispo and its staff cannot be held liable for any use or misuse of the project.
Mechanical Seal Tester, Andrew P. Melrose, Dylan J. Mcfarlane, Laura Ann Jagels, Hayden P. Rahman
Mechanical Seal Tester, Andrew P. Melrose, Dylan J. Mcfarlane, Laura Ann Jagels, Hayden P. Rahman
Mechanical Engineering
The mechanical seals used in centrifugal pumps can fail, requiring the removal of the pump for maintenance. Pump failures cost Phillips 66 additional production time, making it paramount that mechanical seals are functioning properly upon installation. Our objective is to design an apparatus that Phillips 66 can use to test whether their mechanical seals will hold pressure after being installed, without pulling the volute from the field.
Identification System For Heart Valve Manufacturing, Nicholas Robert Jensen, Edgar Davis Nix, Judith Evelyn Gonzalez, Albert Austin Liddicoat
Identification System For Heart Valve Manufacturing, Nicholas Robert Jensen, Edgar Davis Nix, Judith Evelyn Gonzalez, Albert Austin Liddicoat
Mechanical Engineering
Abstract withheld due to NDA constraints
Treadmill User Centering, Cecilia Hill Yan Yuen, Donavan Chandler Feliz, Ariel Mae Arce Crisostomo, Adam Charles Patrella
Treadmill User Centering, Cecilia Hill Yan Yuen, Donavan Chandler Feliz, Ariel Mae Arce Crisostomo, Adam Charles Patrella
Mechanical Engineering
The goal of team CENTREAD was to design a device to allow a person with a visual disability to run efficiently and effectively on a treadmill without fear of falling off or injuring themselves. The customer wished for the device to be small, lightweight, and have an easy, autonomous setup, while providing feedback to the user wirelessly for them to correct their own movement. The ultimate goal of the device is to allow the user to be comfortable, safe, and free while using it in order to ensure they have the best running experience. The device utilizes ultrasonic sensors in …
Foot Stress And Blood Flow Sensing Under High-Loading During Hip Surgery, Chris Cardenas, Esther Chen, Claire Kingston, Katie Paswaters, Brianna Rodebaugh
Foot Stress And Blood Flow Sensing Under High-Loading During Hip Surgery, Chris Cardenas, Esther Chen, Claire Kingston, Katie Paswaters, Brianna Rodebaugh
Mechanical Engineering
The PolyHIPS team was tasked with integrating sensors into Stryker’s hip arthroscopy boot that monitor blood flow and heel slip during hip surgery. During hip arthroscopy, the femur head is distracted from the acetabulum to create space in the joint for the surgeon to operate. This requires the use of up to 200 lbf. In order to maintain this space, the foot is held tightly in the boot. Complications can result from the foot being held too tightly in the boot during the procedure. The most common complication is neuropraxia, or temporary nerve damage. PolyHIPS proposes a solution that utilizes …
Nathan's Mobility Device, Steven A. Decsesznak, Matthew Brenholdt, Lansen Eto, Moulay Salahdin
Nathan's Mobility Device, Steven A. Decsesznak, Matthew Brenholdt, Lansen Eto, Moulay Salahdin
Mechanical Engineering
Nathan’s Mobility Device is a California Polytechnic State University senior project composed of a team of four mechanical engineering students that designed, built and implemented a specialized seat on an existing mobility device. Nathan, the sole beneficiary of this project, is an 11-year-old boy afflicted with a condition known as Spinal Muscular Atrophy (SMA) which causes him extreme muscular weakness. In this report, the team discussed the problem at hand, provides preliminary research and product benchmarking (evaluation and comparison to specific criteria), and described the ideation, prototyping, testing, and iteration plan. In addition, the team explored the final design in …
Transcatheter Heart Valve Leaflet Assembly Tooling Improvement Final Design Report, James Craig Sherman, Zachary Robert Dicks, Luke Edward Williams
Transcatheter Heart Valve Leaflet Assembly Tooling Improvement Final Design Report, James Craig Sherman, Zachary Robert Dicks, Luke Edward Williams
Mechanical Engineering
Statement of Confidentiality: The complete senior project report was submitted to the project advisor and sponsor. The results of this project are of a confidential nature and will not be published at this time.
Composite Suspension For A Mass Market Vehicle, Sarah M. Chapiama, Brian Auyeung, Jose Guerrero, Ethan Lau
Composite Suspension For A Mass Market Vehicle, Sarah M. Chapiama, Brian Auyeung, Jose Guerrero, Ethan Lau
Mechanical Engineering
Statement of Confidentiality: The complete senior project report was submitted to the project advisor and sponsor. The results of this project are of a confidential nature and will not be published at this time.
Curb Navigation, Cole A. Tudor, Kaitlyn R. Adams, Robbie Huerta
Curb Navigation, Cole A. Tudor, Kaitlyn R. Adams, Robbie Huerta
Mechanical Engineering
The Curb Navigation senior project, proposed by the QL+ organization, was presented to find a solution to an issue a former veteran, Velette, is having. Velette has a difficult time maneuvering curbs when out doing day-to-day errands and activities. The goal of this project is to develop a solution that will give Velette the ability to traverse curbs without the assistance of others or the need to do a wheelie that can lead to an injury. The team has found that adapting and optimizing an anti-tipper design may be the best way to solve the proposed challenge. The team decided …
Novel Wine Pouring Machine, Jacob N. Rardin, Erin Clark, Berkeley Davis, Julia Trenkle, Brett Wittmuss
Novel Wine Pouring Machine, Jacob N. Rardin, Erin Clark, Berkeley Davis, Julia Trenkle, Brett Wittmuss
Mechanical Engineering
This Final Design Report outlines the “Novel Wine Opener” senior design project completed by a team of mechanical engineering students at California Polytechnic State University, San Luis Obispo. The project was sponsored by Bill Swanson, owner of the Center of Effort vineyard and winery in Edna Valley, CA. The goal of the project was to produce a novel wine pouring machine for the Center of Effort. This device should be able to remove the foil cap from a wine bottle, uncork the bottle, and pour a glass of wine at the winery and at public events. The finished product should …
Driver Cooling System, Joseph Fatin Bolous, Jake Donald Deboer, Alvin Theodore Lau
Driver Cooling System, Joseph Fatin Bolous, Jake Donald Deboer, Alvin Theodore Lau
Mechanical Engineering
This document provides our Final Design Review (FDR) for the Driver Cooling System Project. It contains our background research, which includes current product research, technical research, and information on our sponsor’s needs as a customer as well our manufacturing process, test results, and final design. We created a problem statement to define the scope of the project, discuss sponsor and consumer needs and wants, and technical specifications. After brainstorming, we ultimately selected a thermoelectric cooling system (TEC) after presenting our Preliminary Design Report and Critical Design Report. We built the final prototype, as can be seen in the manufacturing plan, …
Dynamic Model For Simulating Motion Of The Right Ventricle, Brian Michael Larsen, Sam Koopman Porter, John Francis D'Ambrosio
Dynamic Model For Simulating Motion Of The Right Ventricle, Brian Michael Larsen, Sam Koopman Porter, John Francis D'Ambrosio
Mechanical Engineering
This report documents all the research, ideation, and mockups used to determine right ventricle motion and develop a system capable of reproducing that motion on a tissue sample. The model is intended for evaluating anchoring systems being developed by Edwards Lifesciences for use with tricuspid valve therapies. Several design solutions were considered for the primary functions of recreating motion of the right ventricle and attaching tissue to the device. From these ideas a primary means of producing motion and attaching tissue was selected. These ideas were then developed over the course of a school year to become the final system …
Additive Manufacturing Powder Removal, Madison A. Lignell, Tyler W. Laird, Kurt K. Reed
Additive Manufacturing Powder Removal, Madison A. Lignell, Tyler W. Laird, Kurt K. Reed
Mechanical Engineering
Metal powder-bed fusion is an additive manufacturing process which enables the creation of unique shapes in metal parts that would otherwise be difficult, expensive, or impossible to machine. Metallic powder is melted and fused together by either a laser or electron beam to produce parts quickly. The excess powder covers newly printed parts and can be difficult to remove from small internal features. The scope of this project is to design a device that effectively removes the powder from newly printed parts safely, while reclaiming as much powder as possible for reuse. The solution for this project must be able …
Mechanical Team Final Design Report: Same Polytechnic College, Meghan L. Smith, Katie D. Nute, Long T. Hoang
Mechanical Team Final Design Report: Same Polytechnic College, Meghan L. Smith, Katie D. Nute, Long T. Hoang
Mechanical Engineering
The purpose of this document is to communicate the research, findings, and recommendations of the mechanical engineering team regarding the Same Polytechnic College project. This report includes a discussion of the design process utilized by the interdisciplinary team to construct preliminary building designs for both classroom and dormitory building modules. The mechanical team conducted testing using the wind tunnel to verify major building envelope design decisions. The following report also includes an explanation of the thermal testing that the team conducted to measure the thermal conductivity, diffusivity, and specific heat of bricks made to mimic those made locally in Same, …
Raspberry Harvesting Efficiency Improvement, Trent R. Peterson, Steven Waal, Aaron Feinstein, Danielle Purdy
Raspberry Harvesting Efficiency Improvement, Trent R. Peterson, Steven Waal, Aaron Feinstein, Danielle Purdy
Mechanical Engineering
No abstract provided.
3-Dimensional Automated Heat Flux Calibration Device, Victor Raul Chacon, David Madison Morrisset, Alex Michael Schnorr, Kevin Scott
3-Dimensional Automated Heat Flux Calibration Device, Victor Raul Chacon, David Madison Morrisset, Alex Michael Schnorr, Kevin Scott
Mechanical Engineering
This document aims to describe the problems in current radiant heat source heat flux calibration techniques and the approach our team took to solve them through automation. The following sections outline the basic premise of the problem we addressed and who our end product benefited. The proceeding sections addresses the research that we have performed regarding heat flux measurements and automation. This research includes current solutions – mostly partial solutions for problems that are similar but not exactly like ours. Following the background research, we define objectives, with specific details that outline how we evaluated different possible solutions, and how …
Metal Foam Drying Process, Bryce Zander, Ethan Serpa, Daniel Moore, Michael Mullen
Metal Foam Drying Process, Bryce Zander, Ethan Serpa, Daniel Moore, Michael Mullen
Mechanical Engineering
Design and construction of machine to increase the throughput of metal foam that ERG Aerospace produces.
Interplanetary Transfer Trajectories Using The Invariant Manifolds Of Halo Orbits, Megan S. Rund
Interplanetary Transfer Trajectories Using The Invariant Manifolds Of Halo Orbits, Megan S. Rund
Master's Theses
Throughout the history of interplanetary space travel, the Newtonian dynamics of the two-body problem have been used to design orbital trajectories to traverse the solar system. That is, that a spacecraft orbits only one large celestial body at a time. These dynamics have produced impressive interplanetary trajectories utilizing numerous gravity assists, such as those of Voyager, Cassini, Rosetta and countless others. But these missions required large amounts of delta-v for their maneuvers and therefore large amounts of fuel mass. As we desire to travel farther and more extensively in space, these two-body dynamics lead to impossibly high delta-v values, and …
Modification Of A Ground Based Atomic Oxygen Simulation Apparatus To Accommodate Three Dimensional Specimens, Charles Ward
Modification Of A Ground Based Atomic Oxygen Simulation Apparatus To Accommodate Three Dimensional Specimens, Charles Ward
Master's Theses
The space environment presents various challenges when designing systems and selecting materials for applications beyond Earth’s atmosphere. For mission success, these challenges must be considered. One of the detrimental aspects of the space en- vironment is Atomic Oxygen, AO. Only present in harmful quantities in Lower Earth Orbit, LEO, AO causes significant damage to materials by breaking molecular bonds. California Polytechnic State University’s, Cal Poly’s, space environments laboratory features an apparatus capable of simulating this environment. Very thin or short samples were tested to observe the mass loss due to erosion of the sample material. Recent modifications to the system …
"For All Such, A Country Is Provided": Choctaw Removal, Slave Trading, And Law In Southwestern Mississippi, 1800–1841, Anthony Albey Soliman
"For All Such, A Country Is Provided": Choctaw Removal, Slave Trading, And Law In Southwestern Mississippi, 1800–1841, Anthony Albey Soliman
Master's Theses
At the beginning of the nineteenth century there were few white settlers in the Mississippi Territory. Over the course of two decades, the United States used treaties to force the indigenous inhabitants, the Choctaw, out of this area by the United States to lands west of the Mississippi River. The United States’ goal in the region was to create a plantation economy in the Mississippi Valley based on the production of short-staple cotton sustained by enslaved African American labor. Focusing on the removal of the Choctaw and the subsequent installation of a plantation regime in the Mississippi Valley, this thesis …
The Design, Building, And Testing Of A Constant On Discreet Jammer For The Ieee 802.15.4/Zigbee Wireless Communication Protocol, Alexandre J. Marette
The Design, Building, And Testing Of A Constant On Discreet Jammer For The Ieee 802.15.4/Zigbee Wireless Communication Protocol, Alexandre J. Marette
Master's Theses
As wireless protocols become easier to implement, more products come with wireless connectivity. This latest push for wireless connectivity has left a gap in the development of the security and the reliability of some protocols. These wireless protocols can be used in the growing field of IoT where wireless sensors are used to share information throughout a network. IoT is being implemented in homes, agriculture, manufactory, and in the medical field. Disrupting a wireless device from proper communication could potentially result in production loss, security issues, and bodily harm. The 802.15.4/ZigBee protocol is used in low power, low data rate, …
Detection Method Of Subclinical Atherosclerosis Of The Carotid Artery With A Hemodynamics Modeling Approach, Marisa Peressini
Detection Method Of Subclinical Atherosclerosis Of The Carotid Artery With A Hemodynamics Modeling Approach, Marisa Peressini
Master's Theses
Subclinical atherosclerosis is an important area of research to evaluate stroke risk and predict localization of plaque. The current methods for detecting atherosclerosis risk are insufficient because it is based on The Framingham Risk Score and carotid intima media thickness, therefore an engineering detection model based on quantifiable data is needed. Laminar and turbulent flow, dictated by Reynolds number and relative roughness, was modeled through the carotid artery bifurcation to compare shear stress and shear rate. Computer-aided design and fluid flow software were used to model hemodynamics through the carotid artery. Data from the model was derived from governing equations …
Developing, Evaluating, And Demonstrating An Open Source Gateway And Mobile Application For The Smartfarm Decision Support System, Caleb D. Fink
Developing, Evaluating, And Demonstrating An Open Source Gateway And Mobile Application For The Smartfarm Decision Support System, Caleb D. Fink
Master's Theses
The purpose of this research is to design, develop, evaluate, and demonstrate an open source gateway and mobile application for the SmartFarm open source decision support system to improve agricultural stewardship, environmental conservation, and provide farmers with a system that they own. There are very limited options for an open source gateway for collecting data on the farm. The options available are: expensive, require professional maintenance, are not portable between systems, improvements are made only by the manufacturer, limited in customization options, difficult to operate, and data is owned by the company rather than the farmer. The gateway is designed …
Characterization And Removal Efficiency Comparison Of Bioretention Soil Media Mixtures, Nathan T. Hanson
Characterization And Removal Efficiency Comparison Of Bioretention Soil Media Mixtures, Nathan T. Hanson
Master's Theses
Bioretention cells have become a commonly used green infrastructure technique to help infiltrate and remove contaminants from stormwater runoff. Bioretention cells are constructed from a layered or heterogeneous soil mixture designed to optimize their ability to infiltrate influent stormwater and remove contaminants carried by the water as it filters through the soil media. The soil mixture, composition, and planting vary depending the local regulatory agencies. As urbanization occurs across the United States, more natural land is converted from pervious surfaces, such as grasslands and forests, to impervious surfaces such as asphalt and concrete, to help reduce the impact of the …
Coaching Styles And The Basic Psychological Need Fulfillment Of College Athletes, Kelsey Louise Byrd
Coaching Styles And The Basic Psychological Need Fulfillment Of College Athletes, Kelsey Louise Byrd
Master's Theses
The purpose of this study was to determine to what extent a coach’s coaching style is associated with the athlete’s basic psychological needs fulfillment of autonomy, competence and relatedness. A survey was distributed to 204 varsity student-athletes at Cal Poly, San Luis Obispo representing 13 teams. The data were used to determine the impact of coaching style on the athlete’s fulfillment of autonomy, competence and relatedness. An authoritative head coaching style was found to have a positive impact on an athlete’s fulfillment of autonomy, competence and relatedness. A similar result was found for assistant coaches. Overall, these findings can help …
A Multiphase Modified Boost Converter With Reduced Input Current Ripple: Combined Capacitors, Omri Nissan
A Multiphase Modified Boost Converter With Reduced Input Current Ripple: Combined Capacitors, Omri Nissan
Master's Theses
The delivery of high power and smaller footprints through a non-isolated topology demands for the use of multiphase topology in DC-DC converters. Multiphase reduces the ripple observed on both the input and output waveforms; however, it may not be enough to connect to sensitive power sources such as renewable energy sources. A single-phase modified boost converter demonstrates the ability to acquire very minimal input current ripple by addition of passive components. The expansion to multiphase topology is the next logical step for higher power application while furthering the low input current ripple benefit. In this thesis, the multiphase modified boost …
Foraging Ecology Of Parrotfishes In The Greater Caribbean: Impacts Of Specialization And Dietary Preferences On Marine Benthic Communities, Madelyn V. Roycroft
Foraging Ecology Of Parrotfishes In The Greater Caribbean: Impacts Of Specialization And Dietary Preferences On Marine Benthic Communities, Madelyn V. Roycroft
Master's Theses
Coral reefs are one of the world’s most diverse yet heavily impacted marine ecosystems. As a result of many direct and indirect stressors, coral reefs have experienced major degradation over the last several decades. Declines in coral reefs in the Caribbean have been particularly acute and generally associated with the loss of key herbivores and an increase in algae. Herbivorous fishes such as parrotfishes can positively impact coral reefs by removing algae that compete with corals for light and space. However, many parrotfishes are also important coral predators. Predation on corals, known as corallivory, can adversely affect coral growth, reproduction …
25 Under 25 Film Fest, Michael Frank
25 Under 25 Film Fest, Michael Frank
Journalism
This project is a roadmap on how to create a film festival with unprecedented origins. It shows the amount of work, the amount of resources, and the amount of contacts that a student must gain in order to achieve success in an event of this nature. It details my own journey as the founder and architect of the 25 Under 25 Film Fest, a two-day film festival highlighting 25 films by filmmakers around the state of California. The festival was a highly successful event with numerous facets, which will be outlined with this evaluation. This examination of the festival will …
Small Scale Intelligent Vehicle Final Design Report, Paul Rothhammer-Ruiz, Dominic Riccoboni, Sarah De Rosier
Small Scale Intelligent Vehicle Final Design Report, Paul Rothhammer-Ruiz, Dominic Riccoboni, Sarah De Rosier
Mechanical Engineering
No abstract provided.