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Articles 2071 - 2100 of 7978
Full-Text Articles in Engineering
Dc-Dc Buck-Boost Converter Design For Energy Harvesting From Exercise Equipment, Nicholas Serres
Dc-Dc Buck-Boost Converter Design For Energy Harvesting From Exercise Equipment, Nicholas Serres
Electrical Engineering
This project aims to improve energy harvesting efficiency from an exercise machine. Exercise machine energy harvesting has a small immediate impact but can eventually have an immense impact. An elliptical exercise machine energy converter outputs 5V-60V whereas the microinverters require approximately 36V. The buck boost DC-DC converter bridges the gap between the microinverter and the elliptical machine. Increasing the buck-boost controller efficiency increases power production. Greater power efficiency gives the whole system more financial viability, and additionally makes it a greater sustainable energy source.
Programmable Battery Management System, Jason Erbert
Programmable Battery Management System, Jason Erbert
Electrical Engineering
Lithium batteries provide excellent energy storage capabilities at a relatively high density; however, precautions must be taken with these high energy devices to ensure safe operation. A battery management system (BMS) provides protection by monitoring cell and pack voltage levels and maintaining them in a specific range. They limit the output current and disable the output in extreme conditions. Most devices in the targeted power range (<1000W) do not allow the user to manipulate the values for maximum current, cut-off voltage, or other limits. This project introduces the Programmable BMS (PBMS), which instead allows the user to select these values through a physical interface. The interface displays measurements including pack voltage and output current, and it reports additional characteristics of interest such as the battery’s temperature, state of charge, and cumulative number of charge cycles. This level of access and control permits users to receive the maximum performance and safety from common lithium battery packs.
Dc House Network Design And Modeling, Timmy Huu Nguyen, Joseph Shafie
Dc House Network Design And Modeling, Timmy Huu Nguyen, Joseph Shafie
Electrical Engineering
Although electricity is a necessity for nearly everything in daily life, many developing countries are unable to provide easy access to this utility. Often times within these developing countries, many renewable energy sources exist that are readily accessible to these same people that don’t have access to electricity within their homes, such as solar energy. However, the nature of renewable energy is that most renewable energy lacks consistency in power delivery throughout the day. An example of this is that solar energy isn’t available during the night. These small communities are often comprised of people that are familiar with each …
Smart Motor Syringe System, Conard Chan, Jenny Chiao
Smart Motor Syringe System, Conard Chan, Jenny Chiao
Electrical Engineering
Syringe pumps are widely used in many research applications especially in the applications that need precise control. Today most medical research utilizes syringes to control the fluid being pumped to the experiment objects. In most cases microscopic or nano-scopic motion control is required to acquire optimal results, such application includes purification of DNA/RNA from contaminants[1]. The high precision required to control the syringe pump makes it difficult to perform manually. This paper focuses on the design of an intelligent syringe pump motor control system to achieve reliable and precise control for biomedical experiments. This project improves medical research quality with …
Deepsea Coral Sample Container, Sara Passantino, Andrew Noble, Casey Smith, Thomas Smith
Deepsea Coral Sample Container, Sara Passantino, Andrew Noble, Casey Smith, Thomas Smith
Mechanical Engineering
In order to better understand the health of our oceans and the species that inhabit them, scientists often collect samples for later analysis onshore. The demanding deep-sea environment makes this collection process a challenging engineering task. Samples must first be located, then removed from the seafloor and stored for transportation to the surface. The performance of the engineered solutions that complete each of these tasks is critical in allowing marine scientists to maximize the insight obtained from their expeditions. Marine Applied Research and Exploration (MARE) is an organization that performs such collection of organisms with the help of remotely operated …
Tanzanian Concrete Masonry Walls, Edward J. Kaminski
Tanzanian Concrete Masonry Walls, Edward J. Kaminski
Architectural Engineering
Walls that replicate masonry walls used in Tanzania are constructed and tested. The results from testing was compared with the respective predictions made using code guidelines from ASCE 7 and TMS 402.
Reintroduction Of Skilled Trade Programs For High School Students, Cristian Ayala-Quirino
Reintroduction Of Skilled Trade Programs For High School Students, Cristian Ayala-Quirino
Construction Management
The curriculum that incorporated skilled trades has vanished from many high schools, and more students are encouraged to attend college instead of pursuing trades. People view construction labor positions as jobs instead of careers. The construction industry is facing a substantial labor shortage amongst skilled laborers throughout the whole industry. Not enough people know how beneficial a career in the construction labor force can be. If more people knew about these career opportunities, they might have a greater interest in pursuing a career as a skilled tradesperson. To comprehend students’ understanding of the construction industry and examine where we can …
Should Teamwork-Based Content Be Taught In The Cal Poly Construction Management Curriculum?, Matthew J. Sharman
Should Teamwork-Based Content Be Taught In The Cal Poly Construction Management Curriculum?, Matthew J. Sharman
Construction Management
At California Polytechnic State University, San Luis Obispo (Cal Poly), in the Construction Management (CM) curriculum, there is a lack of teamwork-based content. This content includes negotiation, conflict resolution, and fundamental skills for working collaboratively with others such as social-emotional intelligence, empathy, and communication. The nature of the Cal Poly CM Program is to teach students about the aspects of the construction process, however what is missed is teaching how to work effectively in teams. They fail to teach this because of the strict curriculum of focusing on learning objectives rather than teaching individuals how to be effective construction managers. …
Blockchain Technology In The Construction Industry, Marco C. Reza
Blockchain Technology In The Construction Industry, Marco C. Reza
Construction Management
The construction industry has not advanced as quickly as other industries in the aspects of time, cost, and quality; but Blockchain could be the solution. While there have been improvements in the construction sector such as BIM or Prefabrication, nothing compares to those in other industries. This brings the search for a new technology that would boost construction to a new level of productivity. One technology that could potentially do this is Blockchain. Blockchain, defined in a big picture, is like a shared google sheet where anybody could add information but nobody could delete it. This technology could change the …
Online Platform For Construction Management Internship Reviews - Continued, Michael F. Dunne Iii
Online Platform For Construction Management Internship Reviews - Continued, Michael F. Dunne Iii
Construction Management
The purpose of this paper is to outline and explain the origin, process and outcome of my goal to create a website where Construction Management students have the capability to review their internships. The aim was to continue to progress Cal Poly alumna Erica Zetterquist’s senior project and her idea to create an online platform similar to “PolyRatings”, a website where Cal Poly students are able to review and rate their professors. This website is essentially the same thing as “Polyratings”, but for internships instead of professors, hoping to help students with their job search process. Based off a series …
The Discipleship Home Pergola And Firepit Area, Andreas V. Rasmussen
The Discipleship Home Pergola And Firepit Area, Andreas V. Rasmussen
Construction Management
This report illustrates the complete process of the implementation of an outdoor space consisting of a hardscaped firepit area covered by a pergola in the backyard of the Discipleship Home in Oceano, CA. This project was carried out by two construction management students, Andreas Rasmussen and Logan Smith. Logan Smith’s primary focus was the pergola while I was in charge of the hardscaping and natural gas firepit directly underneath the structure. The project was completed in December of 2020 with the use of quality materials purchased from local businesses and the help of local equipment rental store, Grover Tool & …
Oasis Church: Designing And Building A Pergola For The Discipleship Home, Logan Keil Smith
Oasis Church: Designing And Building A Pergola For The Discipleship Home, Logan Keil Smith
Construction Management
The senior project idea for building a pergola, fire-pit, and paver hardscape was designed and executed by Andreas Rasmussen and Logan Smith. With the necessary background knowledge in landscape construction and the required funding, the Discipleship Home in Oceano, California, gave these two construction management students the opportunity to build an outdoor aesthetic area for residents of the Discipleship Home. This document provides information regarding the design, acquired funding, construction process, lessons learned and conclusion after the project was finished. The purpose of the project is to provide a peaceful place in which the residents of the Discipleship Home can …
An Analysis Of The Cost Impacts Experienced By Drywall Subcontractors During Covid-19, Brenden Schow
An Analysis Of The Cost Impacts Experienced By Drywall Subcontractors During Covid-19, Brenden Schow
Construction Management
Covid-19 has presented issues in many forms for the drywall tenant improvement (TI) industry due to regulations and restrictions instilled in the Bay Area, California. This report details appropriate implementation of force majeure clause in contracts, stay-at-home orders with regard to construction and updated OSHA requirements. It then goes into analysis on cost impacts observed by various drywall companies operating in the Bay Area and how they are created and controlled. This analysis is supported by interviews conducted with representatives from six different drywall subcontractors who are involved in the estimating and bidding process. Interviews consisted of eight open ended …
Preconstruction Plan For Stairs At West Cerro Vista Apartments, Kian D. Kemp
Preconstruction Plan For Stairs At West Cerro Vista Apartments, Kian D. Kemp
Construction Management
Students at California Polytechnic University have created an unsafe dirt trail down a hillside west of the Cerro Vista Apartment Complex on the university’s campus. This heavily traveled trail is a shortcut to an existing pedestrian pathway which connects Village Drive to Poly Canyon Village, as well as the R-3 and R-4 parking structures. The use of this trail raises alarm for potential safety concerns for students using it, especially during winter months when the hillside becomes very slippery. This paper outlines the design and preconstruction plan for the West Cerro Vista Stair Project, which proposes replacing the current trail …
Making Commuting Satisfying For The Employees By Allocating Them To The Proximate Jobsite, Yoo H. Kim
Making Commuting Satisfying For The Employees By Allocating Them To The Proximate Jobsite, Yoo H. Kim
Construction Management
Building a structure is a long process and it is the construction manager’s job to verify and be prepared for any curve balls that can occur. However, construction managers can often get busy and get carried away by their responsibilities and inevitably pay less attention for employee's life after work. For my Senior Project, I have put together a website that can be used by the construction managers to allocate work not only based the skillset but also based on proximity. The name of the website is ✦Proximate and it uses Google Earth Outreach (free tool) to make allocation possible. …
The Enduring Threats Of California Wildfires: How Construction Companies Must Adapt, Connor Welch
The Enduring Threats Of California Wildfires: How Construction Companies Must Adapt, Connor Welch
Construction Management
California wildfires are among the most pervasive and commonly occurring natural threats to the state. Especially considering the incremental increase in frequency and destruction of wildfires, there is a crucial need for modernized policies aimed at both preventative measures as well as viable responses. My project will analyze how the exponentially growing prominence of California wildfires has affected the landscape of the construction business, revealing the need for modernized protocols that could aid in prevention. These factors include the full scope of short and long term economic damages inflicted by wildfires, fluctuations in labor and material prices, and resulting disruptions …
Users Background And Perception Of Robotic Demolition Equipment, Matthew Elston Jones
Users Background And Perception Of Robotic Demolition Equipment, Matthew Elston Jones
Construction Management
Robotic demolition equipment or demolition robots are robots that resemble excavators without the cab, that can be controlled by an operator at a safe distance. This equipment can access hazardous environments and provides versatility in the demolition methods possible. Robots have become a popular choice for contractors looking for a competitive advantage. Currently there is little research about the demolition robot market and how the industry views the technology. This research first seeks to answer background questions on the users and their experience with demolition robots. The research also answers perception questions such as the benefits, drawbacks, and reasons for …
Covid-19 Impact On Construction Companies And Responses To The Pandemic, Justin Kyle Reno
Covid-19 Impact On Construction Companies And Responses To The Pandemic, Justin Kyle Reno
Construction Management
The end of 2019 and throughout 2020 brought along the COVID-19 pandemic which majorly impacted the construction industry. For construction work to continue through the pandemic, adjustments to procedures and protocols were made that satisfied city and state requirements to reduce the virus spread. Since the virus is deemed highly contagious it is much easier to contract than a common flu, making containment for any potential spread a high priority. Understanding different companies’ responses to the pandemic at the construction jobsite level provides opportunities to implement procedures to stop the spread of the virus. Using in-depth interviews, this paper examines …
Understanding Culture Within The Construction Industry Through Lifelong Learning (Slo 24), Skylar Schrank
Understanding Culture Within The Construction Industry Through Lifelong Learning (Slo 24), Skylar Schrank
Construction Management
Understanding cultural differences is a crucial step for the success of a construction firm. Creating a common ground for diversifying the perspectives of individuals in the construction industry will prove to progress the success of a company and the projects that are a part of these firms. This study guide will define what culture means for construction, the different types of cultures in the construction industry, as well as how to implement cultural background in our education for cultural understanding. The result will be an understanding on how culture poses a risk to construction and how these risks can be …
Returning To Learn By Doing, Jeremiah W. Miller
Returning To Learn By Doing, Jeremiah W. Miller
Construction Management
The objective of my senior project was to help return the Cal Poly SLO Construction Management Department to their hands-on labs after the COVID-19 Pandemic forced all learning to go virtual. To return to hands-on labs, I needed to create a set of protocols that faculty and staff could use before, during, and after the labs to prevent the spread of COVID-19. These protocols needed to be simple enough that professors could use them every day and effective enough to make students feel safe to continue attending in person labs. If these protocols were to be accepted, they would need …
Virtual Recruiting: The Impact Of Virtual Interviews & Hiring Events On Construction Students, Abram G. Briones-Colman
Virtual Recruiting: The Impact Of Virtual Interviews & Hiring Events On Construction Students, Abram G. Briones-Colman
Construction Management
Recruitment from college construction programs was drastically altered by not being allowed to gather in person in large groups for the majority of 2020. Companies could no longer recruit in person as they had at past college events, and instead connected and communicated with students virtually. The construction management department at California Polytechnic State University San Luis Obispo (Cal Poly), bridged this gap between recruiting companies and current students, at a virtual career fair using a collaborative hub built on Microsoft Teams. Data was gathered from students via a survey after attending this first departmental virtual fair, to measure impacts …
The Feasibility Of Real Time Location Systems In Construction, John O. Brouse Iv
The Feasibility Of Real Time Location Systems In Construction, John O. Brouse Iv
Construction Management
The construction industry is becoming increasingly sophisticated by implementing new computer-based technologies to improve safety, efficiency, accountability, and many other aspects. One new type of technology that is becoming increasingly popular in other labor based industries is real time locating systems. These systems allow for managers to keep accountability of a variety of assets in a manufacturing facility or industrial center. Recent research has shown the benefits and potential uses of these systems on construction jobsites. This paper seeks to analyze the potential for Real Time Location Systems (RTLS) to be used on construction jobsites and compare the different RTLS …
Analysis Of Working From Home Vs Working At The Office, As A Construction Company In The Bay Area, Kyle M. Ruff
Analysis Of Working From Home Vs Working At The Office, As A Construction Company In The Bay Area, Kyle M. Ruff
Construction Management
In 2020, working from home has become an increasingly popular trend amongst construction offices across the Bay Area to combat the spread of COVID-19. This meant that employees who used to commute were now able to work from home. This paper analyzes the impacts working from home has on the productivity, work-life-balance, and overall well-being of a Bay Area construction office employees . A survey was issued to the estimating department of a large general contractor in the Bay Area, with the intent of finding the impact working from home had on the three aspects of working life, as previous …
Diversity And Inclusion In The Workplace: A Comparative Analysis Between A Large And Small Company, Andrew K. Hernandez
Diversity And Inclusion In The Workplace: A Comparative Analysis Between A Large And Small Company, Andrew K. Hernandez
Construction Management
The construction industry in recent times have seen an increase in inclusivity and diversity among the workplace. The industry seems to make improvements and steps to create an overall accepting workforce. However, there is still a need to produce a more inclusive work environment. There are many organizations and legal requirements that push for improving diversity throughout companies, but still the industry struggles to do so. Improving diversity in the workforce can reach out to more personnel with talent and skill to possibly attack the trade labor shortage in this industry. Analytical research methods in these reports were used to …
Application Of Autonomous Equipment In Heavy Civil Construction, Roman J. Ruffino
Application Of Autonomous Equipment In Heavy Civil Construction, Roman J. Ruffino
Construction Management
The prevalence of autonomous vehicles in our everyday lives is continually growing. Automobile manufacturers such as Tesla have made great strides in building a car that can safely navigate the world around it and respond to sudden changes. There is great potential in the heavy civil construction industry for equipment such as bulldozers, scrapers, and transport vehicles to add another level of safety and efficiency to the worksite. The goal of this research will be to determine whether a contractor would actually apply this technology, or if it isn’t practical for everyday use. This paper will examine the current state …
Pismo Beach Lions Club Sidewalk Replacement, Ramon Hernandez Jr
Pismo Beach Lions Club Sidewalk Replacement, Ramon Hernandez Jr
Construction Management
The objective of this senior project was to provide a long lasting and safe sidewalk for all the people that attend the Lions Club for future events. The idea came to be after talking to Karen Walsh, and how many previous visitors had tripped and fallen from the uneven sidewalk. The sidewalk was originally poured over 30+ years ago, and it was time for a newly built pathway. The project involved creating an estimate, schedule and coordinating with the club to see the project all the way through. The new sidewalk is now built stronger than ever before and is …
Organize, Prepare, And Painting Project: Pismo Beach Lions - Club, Luis Badillo
Organize, Prepare, And Painting Project: Pismo Beach Lions - Club, Luis Badillo
Construction Management
This paper explains the management process and execution of a project based senior project painting for a nonprofit. The main aim of the project was to give back to a charity organization that offers their time and energy to support their local community. This project occurred during the COVID 19 pandemic, and appropriate safety protocols were used including in communicating with the club representatives. The Pismo Beach Lions Club building was weathered and in need of fresh paint. The original color logo of the Lions Club is blue and white and was preferred that the building remain the same colors. …
Case Study: Effects Of Covid-19 On A Mid-Size San Francisco Commercial General Construction Company, Andrew G. Maxwell Jr
Case Study: Effects Of Covid-19 On A Mid-Size San Francisco Commercial General Construction Company, Andrew G. Maxwell Jr
Construction Management
The Covid-19 pandemic has had an adverse effect on the commercial construction industry. New safety procedures and regulations set by local government and health officials have made it difficult for construction to proceed at the efficiency level it had prior to the pandemic. The San Francisco Bay Area was subject to strict protocols starting in March of 2020 that vastly limited the capability of construction companies to perform work. This case study looks into the ways in which a mid sized commercial general construction contractor from the San Francisco Bay Area was impacted by Covid-19 and the methods they used …
Implementation Of Bluebeam To The Fundamentals Of Construction Management Course, Kirk Arena
Implementation Of Bluebeam To The Fundamentals Of Construction Management Course, Kirk Arena
Construction Management
This project based senior project was brought about by Paul Weber and Matty Reed and was originally intended to take the paper-based binders from the Fundamentals to Construction Management course and organize these binders in Bluebeam. Bluebeam is an industry standard for nearly all construction projects, and an early adoption of the software could allow students to familiarize themselves with a tool that they will use after college or during internships. After deliberating with Paul, we concluded that we could better educate students by creating exercises that allow students to learn the tools available in Bluebeam through interactions in the …
Hypersonic Heat Transfer Load Analysis In Star-Ccm+, Robert Comstock
Hypersonic Heat Transfer Load Analysis In Star-Ccm+, Robert Comstock
Master's Theses
This thesis investigates the capabilities of STAR-CCM+, a Computational Fluid Dynamics (CFD) software owned by Siemens, in predicting hypersonic heat transfer loads on forward-facing surfaces. Results show that STAR-CCM+ predicted peak heat transfer loads within +/- 20% of experimental data on the leading edge of a delta wing design from the X-20 Dyna-Soar program with 73o of sweep. Steady-state laminar simulations were run as replications of wind tunnel tests documented in NASA CR-535, a NASA technical report that measured and studied the hypersonic pressure and heat transfer loads on preliminary X- 20 wing designs across a wide range of …