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Articles 991 - 1020 of 7976
Full-Text Articles in Engineering
Exhaust Manifold Pressure As Engine Tuning Parameter, Kieran Truth Cunningham, Adam Sullivan Mathews, Connor Richard Smullen
Exhaust Manifold Pressure As Engine Tuning Parameter, Kieran Truth Cunningham, Adam Sullivan Mathews, Connor Richard Smullen
Mechanical Engineering
In this project, the exhaust manifold absolute pressure (EMAP) of a 1986 Toyota Corolla was analyzed across a variety of load cases and was compared with the mass air flow (MAF) of the intake, simultaneously. Correlations were found in the trends of EMAP and MAF sensor readings that may prove helpful in tuning engines that have difficulty in accommodating a MAF sensor. These correlations were found in areas of the powerband where aftermarket tuned engines typically have poor airflow sensing. An equation was developed to spoof MAF input using EMAP and other engine operating parameters.
Biobesoothe, Noah M. Taylor, Jillian Trilevsky, Sam Rosenkranz
Biobesoothe, Noah M. Taylor, Jillian Trilevsky, Sam Rosenkranz
Biomedical Engineering
This document details the background, design process, and functional prototype for the BioBesoothe senior project. The project aimed to address difficulties with self-regulation in children with autism. It focused on encouraging even, slow breathing to activate the parasympathetic nervous system, which in turn lowers heart rate, blood pressure, and stress levels. The project was guided by research into ways to achieve an appropriate breathing rate. In addition to functionality, emphasis was placed on engagement, ergonomics, and affordability. It was highly important for this product to be engaging to hold the interest of its patients and allow for extended periods of …
Pitot Tube Test Bench, Jesus Perez, Zachary Owen, Adrian Lopez
Pitot Tube Test Bench, Jesus Perez, Zachary Owen, Adrian Lopez
Mechanical Engineering
This Final Design Review documents the senior design project carried out by a team of Mechanical Engineering students attending California Polytechnic State University, San Luis Obispo for Roger Benham, and his company Leak Control Services Inc. The requirement was to design, build, and validate the performance of a test fixture that quantifies the performance characteristics of flow rate and pressure drop of different pitot tube designs to be used in a chemical dispensing application for Mr. Benham. This document includes relevant background research on the need for the fixture as well as relevant technical research. This document also contains objectives …
Asme Electric-Human Powered Vehicle (Ehpv) Project, George Bernat, Roman Bradley, Casey Pickett, Paul Mansfield
Asme Electric-Human Powered Vehicle (Ehpv) Project, George Bernat, Roman Bradley, Casey Pickett, Paul Mansfield
Mechanical Engineering
This report documents the collaborative efforts of the senior design team and the Cal Poly Human Powered Vehicles Club in creating an electric-assisted human powered vehicle tailored for participation in ASME's e-HPV Spring 2024 competition. Delving into a comprehensive account of the project's lifecycle, the report outlines the iterative stages of ideation and design, the manufacturing processes, testing , and subsequent refinements undertaken by the team. Additionally, it provides analysis of the project management strategies employed, as well as an overall appraisal of successes, setbacks, and areas improvement. As a result of the project, the vehicle (shown below) was successfully …
Reconstruction Of The Neglected: Cal Poly’S Old Powerhouse, Sophie Meier, Morgan Cuthbert, Luke Zamlich
Reconstruction Of The Neglected: Cal Poly’S Old Powerhouse, Sophie Meier, Morgan Cuthbert, Luke Zamlich
Architectural Engineering
Cal Poly’s Old Powerhouse (BLDG 76) is the only remaining building from the original Polytechnic school left on campus. It was built in 1910 and placed on the national registry in 1993. The Powerhouse used to do exactly what its name implies, provide power to campus. After it retired from its purpose, it was used for many other use cases, particularly as a space for the College of Architecture and Environmental design. Through its time, it was used as a classroom space, pottery/creative space, a workshop, and even once contained a fishpond. The building was then abandoned in 1990, a …
Tourniquet Pressure Gradient Measurement Apparatus, Luis Enrique Perez, Elsa Elizabeth Bates
Tourniquet Pressure Gradient Measurement Apparatus, Luis Enrique Perez, Elsa Elizabeth Bates
Biomedical Engineering
The goal of this project was to design a device that would measure pressure gradient data across the width of an elastic and inelastic tourniquet cuff using a human limb model. The main customer requirements that were focused on were to accurately measure the pressure from a tourniquet, keep the cost down, and be easy to use. The targeted design specifications were to read pressure values ranging from 0-400 mmHg, keep the test length under 5 minutes, and to keep the cost of materials under $400. The design of the device ended up consisting of 5 IV pouches that were …
Auto Adjustable Flow Regulator, Ethan Hemmerlin, Jack Dooley
Auto Adjustable Flow Regulator, Ethan Hemmerlin, Jack Dooley
Biomedical Engineering
The Auto-Adjustable Oxygen Flowmeter device is to be used in conjunction with an oxygen source or reservoir, as well as a low-flow nasal cannula apparatus. The device is applicable for patients requiring an oxygen flow rate of 0-6 L/min. Further, the device works to maintain a healthy blood-oxygen concentration of 90-94% for typical patients, as well as an 88-92% range for COPD patients who are chronic CO2 retainers. A reflective pulse oximeter will record the SpO2 concentration of the patient. The outputted SpO2 concentration will be transmitted to an internal processing PCB from which it will interact with the oxygen …
Case Study: Diesel Powered Loaders Compared To Electric Loaders In Heavy Civil Construction, Jayson Downs
Case Study: Diesel Powered Loaders Compared To Electric Loaders In Heavy Civil Construction, Jayson Downs
Construction Management
As the construction sector evolves, the environmental consequences of greenhouse gasses have become a significant issue. Numerous contractors are transitioning to electric-powered systems, which offer more energy-efficient methods for heavy machinery, enhanced productivity, and construction equipment that meets new and improved emission standards. This paper aims to examine the viability of heavy civil construction firms transitioning from traditional diesel-powered wheel loaders to electric wheel loaders. Given the competitive and saturated market in road construction, many contractors have already started investing in electric systems. This results in cost savings in terms of fuel efficiency and operating expenses compared to conventionally fueled …
Efficacy Of Passive Ventilation With High Exhaust Demands: A Case Study Of Cal Poly Sst, Siddarth Bokka
Efficacy Of Passive Ventilation With High Exhaust Demands: A Case Study Of Cal Poly Sst, Siddarth Bokka
Construction Management
The Simpson Strong Tie Demonstration Laboratory serves as a multipurpose space allowing students at the College of Architecture and Environmental Design at California Polytechnic State University to build full scale construction projects. The building features a material storage area, a high bay for construction of full-scale projects, and a mezzanine level that houses digital fabrication equipment. However, the building was never designed to house the specific equipment currently installed on the mezzanine and ventilate the exhaust fumes from them. Rather, the building relies on passive natural ventilation that is likely ineffective at properly exhausting hazardous fumes, resulting in complaints from …
The Impact Of Culture On Construction, Vatulele Uluakiotonga Finau
The Impact Of Culture On Construction, Vatulele Uluakiotonga Finau
Construction Management
The aim of this comprehensive exploration is to identify elements within Japanese, Islamic/Arabic, and Tongan cultures that can be implemented into construction practices in California, leveraging their unique values to enhance home design and construction. The study reveals that culture plays a pivotal role in shaping the design and construction of homes, reflecting deeply held values, traditions, and societal norms. Through qualitative research, expert interviews, and a detailed literature review, key elements defining each cultural approach to housing are elucidated. From the emphasis on privacy and natural ventilation in Japanese homes to the integration of modesty and hospitality in Islamic/Arabic …
Lemur Enclosure, Joshua Mancio, Justin Krietzberg
Lemur Enclosure, Joshua Mancio, Justin Krietzberg
Construction Management
Zoo-to-You, a local wildlife conservation zoo, proposed a project to construct a new shelter for their lemurs due to the inadequacy of protection for extreme heat or cold weather of their previous enclosure. With three lemurs in residence, the zoo sought to create a spacious and insulated shelter that would provide protection from the elements while allowing connectivity to the adjacent enclosures. Situated amidst two existing circular cages with a gap in between, the project presented unique site conditions on a concrete slab. The scope of the project encompassed estimating, design, material procurement, build-out, and owner turnover, with the objective …
Effects Of The 2022 California Building Energy Efficiency Standards On New Construction In San Luis Obispo County, Christopher Hoefer
Effects Of The 2022 California Building Energy Efficiency Standards On New Construction In San Luis Obispo County, Christopher Hoefer
Construction Management
California released the first Building Efficiency Standards, or Energy Code, in 1976 and has updated them every three years. These standards aim at limiting the amount of energy use and greenhouse gas emissions by buildings in the state. California claims that these standards have saved consumers billions on utility bills, but there is limited information on the upfront impact the Efficiency Standards have had on new construction. This study sought to evaluate the impact that the 2022 California Building Energy Efficiency Standards had on new construction in San Luis Obispo County. Interviews were conducted with local specialty contractors in order …
Creating Content For Prison Design Course: Nordic Countries Vs. United States, Calvin Steven Clauson
Creating Content For Prison Design Course: Nordic Countries Vs. United States, Calvin Steven Clauson
Construction Management
Since 2010, prisons in Nordic countries have begun to take a very progressive approach to rehabilitating prisoners, addressing prisoners more humanely than is traditionally done in the United States. This project aims to develop course content that looks at the design elements of prisons in the United States and performs a comparative analysis with more progressive Nordic prison designs. Cal Poly’s construction management department will incorporate the developed content into one module of a co-taught course with sociology. The course will examine the ways social changes impact the construction of prisons and the social impacts of design and construction on …
Student Solutions For Leaf Drying: A Collaborative Approach To Enhance Moringa Production In Ghana, Daniel Desoto
Student Solutions For Leaf Drying: A Collaborative Approach To Enhance Moringa Production In Ghana, Daniel Desoto
Construction Management
This paper expands on a project that seeks to address the need for an updated mechanical leaf drying system for local farmers in Ghana, Africa. Working with the local organization, Moringa Connect, we were able to connect and identify potential areas of improvement within the current existing system. This project involved aspects of design, fundraising, and the construction of a rotating metal hopper. This hopper was identified as a solution for a crucial pinch point currently seen in the processing of the leaves from a wet stage to the final dry product. The design and construction process had a multidisciplinary …
Designing A Chicken Coop For The San Luis Obispo High School Ffa Farm, Zoe King
Designing A Chicken Coop For The San Luis Obispo High School Ffa Farm, Zoe King
Construction Management
This paper covers the design process by a team of students from Cal Poly to provide a chicken coop for the San Luis Obispo High School FFA Farm. The project, initiated in Summer of 2023, aimed to replace their existing temporary chicken coops with a larger, better functioning structure that could house their 10+ chickens comfortably. The paper focuses primarily on the design phase but touches briefly on material procurement and construction. Through meetings with the client, the team developed a design that met the school’s design criteria and educational needs. The design process involved collaboration and many iterations of …
Design And Construction Of A Buddy Bench For An Elementary School Play Yard, Remy N. Hickle
Design And Construction Of A Buddy Bench For An Elementary School Play Yard, Remy N. Hickle
Construction Management
A buddy bench was designed, constructed, and installed at the Shasta Meadows Elementary School in Redding, California. A response to loneliness and bullying in schools, the buddy bench is a physical and nonverbal way students can identify the need for companionship on a school playground. By sitting on the bench, students, teachers or school administrators will see them and can come over to spend time with them. Grounded in personal connections and a deep understanding of the school's ethos, the buddy bench aims to foster empathy, inclusion, and support within the student community. Through collaborative efforts with school staff, students, …
Usage Of Three-Dimensional Reality Capture Products In Construction, Kyle Vaughn
Usage Of Three-Dimensional Reality Capture Products In Construction, Kyle Vaughn
Construction Management
3-Dimensional Reality Capture is an emerging technology employed in the construction industry, involving the usage of 360-Degree cameras which generate digital models of captured environments. The current products offered provide tools for recording as-built historical data, as well as provide more advanced functions for generating QC and project management focused reports based on site conditions. It is hypothesized that the products lack the usefulness to warrant further use from current applications. Interviews were conducted with reality capture vendor Cupix and a Hensel Phelps project team using qualitative questions to drive conversation on the product potential, and current extent of usage …
Insights Into Cellular Evolution: Temporal Deep Learning Models And Analysis For Cell Image Classification, Xinran Zhao
Insights Into Cellular Evolution: Temporal Deep Learning Models And Analysis For Cell Image Classification, Xinran Zhao
Master's Theses
Understanding the temporal evolution of cells poses a significant challenge in developmental biology. This study embarks on a comparative analysis of various machine-learning techniques to classify cell colony images across different timestamps, thereby aiming to capture dynamic transitions of cellular states. By performing Transfer Learning with state-of-the-art classification networks, we achieve high accuracy in categorizing single-timestamp images. Furthermore, this research introduces the integration of temporal models, notably LSTM (Long Short Term Memory Network), R-Transformer (Recurrent Neural Network enhanced Transformer) and ViViT (Video Vision Transformer), to undertake this classification task to verify the effectiveness of incorporating temporal features into the classification …
A Comparison Of Western And Eastern Soft Systems Approaches, John L. Anaya, John L. Anaya, John L. Anaya
A Comparison Of Western And Eastern Soft Systems Approaches, John L. Anaya, John L. Anaya, John L. Anaya
Master's Theses
Soft System Approaches have been developed worldwide to help problem-solvers and decision-makers develop solutions to complex problems, such as aerospace systems. Soft System Approaches were designed to help lower the disorder of developing a complex system by increasing understanding of a situation. Four Soft System Approaches were investigated, two from the West and two from the East. Within the context of the paper, the West refers to thought patterns associated with thinkers and scientists in Europe and North America, and the East refers to those from and around China. The two from the West are Peter Checkland’s Soft Systems Methodology …
Assisted Delivery Device, Rachel Rowe, Madeliene Mumford, Jenna Eissmann, Brittany Trinh
Assisted Delivery Device, Rachel Rowe, Madeliene Mumford, Jenna Eissmann, Brittany Trinh
Biomedical Engineering
Current devices used to assist in complicated births present serious risks to both the mother and the fetus, which has caused a decline in the use of these devices over the last decade. This senior project team has proposed an alternative device that interfaces with the infant’s shoulders that would decrease these risks and contribute to the decrease of unnecessary c-sections due to device inadequacy. This Statement of Work includes research on the downfalls of current devices, existing patents, customer requirements, engineering specifications, and a design plan through December of this year. The next phase of this project will include …
Neonatal Respiratory Therapy Interface, Kennedy Austin, Evan Manley, Parker Murray, Harrison Oen
Neonatal Respiratory Therapy Interface, Kennedy Austin, Evan Manley, Parker Murray, Harrison Oen
Biomedical Engineering
This Final Report reviews and outlines the scope, objectives, and deliverables for the BCPAP Interface Redesign project, aimed at enhancing the functionality, usability, and patient experience of the existing BCPAP interface. It also includes detailed testing results and manufacturing plans for the device prototype. The current system has challenges in universal usability, time constraints, and patient comfort, which this project intends to address effectively. The goal of this project is to reevaluate and redesign the interface of the bubble continuous positive air pressure (BCPAP) machine’s attachment site with the infant. Due to the millions of premature neonates and thousands of …
An Exploratory Framework For Benchmarking Vehicle Miles Traveled (Vmt) Estimates Associated With University Campuses, Troy Kawahara
An Exploratory Framework For Benchmarking Vehicle Miles Traveled (Vmt) Estimates Associated With University Campuses, Troy Kawahara
Master's Theses
Although vehicle miles traveled (VMT) has become the standard for assessing transportation related impacts in California, some have concerns that many VMT estimates are not properly grounded or informed by real world data, potentially resulting in flawed estimates and impact assessments. This is especially true of special generators, like college and university campuses, which have complex travel patterns distinct from that of the general public. This thesis attempts to resolve a significant disparity observed between two credible VMT estimates for Cal Poly’s campus wide VMT. As part of a campus master planning effort, a VMT estimate was produced in 2019 …
Finite Element Analysis Of The Bearing Component Of Total Ankle Replacement Implants During The Stance Phase Of Gait, Timothy S. Jain
Finite Element Analysis Of The Bearing Component Of Total Ankle Replacement Implants During The Stance Phase Of Gait, Timothy S. Jain
Master's Theses
Total ankle replacement (TAR) implants are an effective option to restore the range of motion of the ankle joint for arthritic patients. An effective tool for analyzing these implants’ mechanical performance and longevity in-silico is finite element analysis (FEA). ABAQUS FEA was used to statically analyze the von Mises stress and contact pressure on the articulating surface of the bearing component in two newly installed fixed-bearing total ankle replacement implants (the Wright Medical INBONE II and the Exactech Vantage). This bearing component rotates on the talar component to induce primary ankle joint motion of plantarflexion and dorsiflexion. The stress response …
Design And Analysis Of Zero Voltage Switching Hybrid Voltage Divider, Stephen Ulysses Alvarado Estrada
Design And Analysis Of Zero Voltage Switching Hybrid Voltage Divider, Stephen Ulysses Alvarado Estrada
Master's Theses
This work explores the design, construction, and analysis of a novel DC-DC converter which incorporates combinations of switching capacitors and inductors to achieve an integer voltage divider function, without the need for a feedback loop controller to achieve the desired output voltage. The proposed Hybrid Voltage Divider additionally provides zero voltage switching (ZVS) at turn on transitions which yields improved overall efficiency of the converter. Besides a proof-of-concept via computer simulations, another primary goal of this thesis is to demonstrate the functionalities of the proposed Zero Voltage Switching Hybrid Voltage Divider (ZVS-HVD) through hardware prototyping. The proposed ZVS-HVD was designed …
Construction Software: Use, Selection, And Performance In Low-Bid Contracting, David R. Cazares
Construction Software: Use, Selection, And Performance In Low-Bid Contracting, David R. Cazares
Construction Management
The qualitative research included in this study evaluates the use, selection, and perceived gaps of current construction software suits in low-bid contracting. In addition, the data aims to provide merit to the correlation between construction software use and company performance. The intended stakeholders of this study include entrepreneurs in software development and construction, along with researchers looking to gather knowledge pertaining to this niche industry. Through a Google Forms questionnaire distributed via email, participants provide insight on the current status quo. The study’s responses show clear trends in the types of software currently in use and the subsequent reasons for …
Cal Poly Craft Center Wedging Tables, Cooper Christopher Strong
Cal Poly Craft Center Wedging Tables, Cooper Christopher Strong
Construction Management
The Craft Center, located on Cal Poly's campus, is where students can unwind from stressful coursework and engage in activities like pottery, surfboard shaping, and stained glass. The pottery studio needed new wedging tables, which are essential for removing air from clay before shaping it. The project involved building two new 7’ x 2.5’ tables that would fit well in the space and be durable. Designed to be 33” tall, these tables are accessible to students of varying heights. They feature a concrete surface that is both durable and porous, helping to absorb some moisture during use. The previous tables …
Reinstatement Of The Poly Canyon Caretaker Program Through The Development Of A Tiny Home Community, Leily Martin
Reinstatement Of The Poly Canyon Caretaker Program Through The Development Of A Tiny Home Community, Leily Martin
Construction Management
The Poly Canyon Experimental Structures Laboratory, through its Design/Build program, is unique in the educational opportunity it provides Cal Poly College of Architecture and Environmental Design (CAED) students. However, since the conclusion of the Caretaker Program in 2011, the facility’s structures have deteriorated due to vandalism, purposeful destruction, and weathering. This study examines the perspectives of CAED students, the interim CAED Dean, Kevin Dong, and Cal Poly Risk Manager, Mike Morgan, on the effectiveness in reinstating the Caretaker Program through the development of a tiny home community. Results indicated educational value in this facility, so addressing these issues must occur …
Investigating The Influence Of Container Design And A Bulge Reduction Technique In Corrugated Fiberboard Containers Under Static Compression, Jay Singh, Koushik Saha
Investigating The Influence Of Container Design And A Bulge Reduction Technique In Corrugated Fiberboard Containers Under Static Compression, Jay Singh, Koushik Saha
Industrial Technology and Packaging
This study explored the bulge effect in corrugated fiberboard boxes caused by excessive weight, leading to compromised stacking strength and potential product damage. It investigated how container design, specifically the height variations of regular slotted containers (RSCs), affects bulging under compression and its vulnerability to environmental conditions. Testing met ASTM standards, with samples conditioned according to ASTM and TAPPI protocols, revealing that changes in box height influence bulge displacement. Subsequent research examined the impact of top-to-bottom static compression loads on bulging in tape-reinforced RSC designs, evaluating bulge reduction and compression strength across various tape placements and environments. Notably, previous studies …
Collaborations, Not Competitions, Can Reduce Gender Disparities In Robotics, Sonia Roberts, Alysson Light
Collaborations, Not Competitions, Can Reduce Gender Disparities In Robotics, Sonia Roberts, Alysson Light
Feminist Pedagogy
No abstract provided.
Centering Equity In Stem Teaching: Stem Ideas That Change The World, Ileana Vasu
Centering Equity In Stem Teaching: Stem Ideas That Change The World, Ileana Vasu
Feminist Pedagogy
No discussion on equity/inequity makes sense without bringing power into that discussion. As instructors we need to ask questions such as “who decides and controls what knowledge is”, “whose identities are empowered and whose are erased”, “who has access and opportunity and who doesn’t”. Traditional teaching in STEM, including mathematics, assumes knowledge is objective, transmittable, repeatable to everyone. When educators follow a traditional curriculum, just like their teachers before them, they do so thinking their methods ensure equality and objectivity. These practices not only deny the role that Western patriarchal cultures have played in creating these so-called equitable practices, but …