California Polytechnic State University

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    41530 research outputs found

    AS-933-22 Resolution Requesting an Independent Investigation Into Chancellor Castro\u27s Handling of the Sexual Harassment Allegations Against Frank Lamas

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    Resolved that the Academic Senate call on the Cal State Board of Trustees to initiate an external and independent investigation into Chancellor Castro’s handling of the sexual harassment allegations against Frank Lamas. And the resolution urges that the California State University System reexamine its policies regarding the separation of members of the Management Personnel Plan (MPP) who are subject to ongoing Title IX investigations or have been found in violation of Title IX policies

    Using Extended Realities To Teach Construction Management

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    This project aimed to analyze the implementation of extended realities to teach construction management at the university level. Extended realities in this context are referring to augmented reality (AR) and virtual reality (VR); these are the two for which funding was received by Cavrnus. The foundation for this project started with the pre-existing lesson for the California Polytechnic State University’s (Cal Poly) residential construction class. The original lesson was constructed with the students learning the wood framing of a house by reading. While this is a suitable learning method for some it is not the best for all. This project introduces VR and AR into the learning environment bringing kinesthetic and visual learning into the scenario. The theory is by providing a 3D experience one can improve the amount of information retained. With the information gathered, it is determined that VR and AR could be used more in the near future and a good resource to teach. However, there are some software issues that need to be worked on before it becomes available for teaching purposes

    Smart Motor Syringe System

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    In this document a proof-of-concept design is developed and implementation to showcase the latest development in an ongoing effort to produce a series of automated syringe pumps

    Journal Staff

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    Mars Prototype Rover Environmental Measurement System

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    In my senior project, the problem I am trying to solve is how to efficiently design, create, and install an original library onto a Mars prototype rover operating system and to further use that library to integrate a new weather measurement sensor device into the rover system with the necessary software and hardware implementations. This is an important and highly valued problem as many aerospace and other engineering companies utilize rovers and other autonomous systems for important research, explorations, and reconnaissance missions and goals. In solving this problem, I utilized many resources that were available to me such as advisors, clients, peer rover development teams, and many other academic videos and articles for understanding and guidance. I also spent a lot of time studying the existing code and hardware on the rover as I progressed on my senior project. In the end, I managed to successfully integrate my new sensor into the rover\u27s software and hardware design and was able to gather and display the desired measurements from the sensor through the rover\u27s operating system. The success of this project shows that although computer software and electrical hardware integration is complicated and tedious, advancements in this field of computer engineering could prove to be the key to propelling mankind into the next era of technology in engineering

    FIRE PROTECTION ANALYSIS PROJECT – 9220 ZANZIBAR LANE MAPLE GROVE, MN

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    This report contains an analysis of the life safety and fire protection features of a four-story apartment building in Maple Grove, Minnesota. The report is a part of the final project intended to meet the requirements for the Culminating Experience of the California Polytechnic Master of Science Fire Protection Engineering Program. The apartment building chosen for the analysis is a mixed-use four-story wood-framed structure. The first floor of this structure includes office space for building management, a meeting space, and various electrical and mechanical spaces as well as apartments. There are exit stairways on each end of the structure extending up all four floors, and a center stairway extending up only to the second floor. There is a parking garage in the basement that is comprised of cinder block walls, steel girders for support above, and metal pan with poured concrete for the garage ceiling. The building is fully sprinklered throughout. This report contains analysis of the prescriptive code requirements as well as the fire protection and life safety features of the apartment structure. Topics discussed include means of egress, fire suppression system, fire alarm and detection and structural fire protection. This report evaluates the International Code Council model building and fire codes and the National Fire Protection Associations codes and standards as a prescriptive code analysis for this multi-tenant apartment building. The building is found to be in compliance with the documented codes and standards in effect at the time of building design and assembly. This report also contains a performance-based evaluation. The performance-based evaluation included in Section 7 of the report describes two design fire scenarios to determine the capability of occupants to safely evacuate in the event of the fire scenario. Both fire scenarios are evaluated for performance-based analysis. Three potential scenarios are as follows: 1) An occupancy-specific design fire scenario that is representative of a typical fire for the occupancy; 2) A fire that starts in a normally unoccupied room that may endanger large numbers of occupants; 3) The most severe fire resulting from the largest possible fuel load characteristic of the normal operation of the building. Selected Design Fire Scenario 1: The design fire involves a kitchen fire in a fourth story apartment unit adjacent to an east egress stairwell. This kitchen fire is based on unattended oil on a cook top igniting and enveloping the combustible kitchen elements, spreading to the living room and dining room. The projected heat release rate maximizes at 4.0 MW with a time to peak following the incipient phase estimated at 136 seconds. This fire scenario also includes fire sprinkler heads located as documented on the design drawings, as well as a fire scenario with the apartment door open and closed to evaluate the impact on smoke spread into the hallway which is a common access egress path. Tenability criteria with all safety features engaged was not exceeded at any point during the simulation for this design fire. The available safe egress time (ASET) exceeded the model run time of 450 seconds. Selected Design Fire Scenario 2: The second design fire involves a fire within the trash room on the first floor, which is adjacent to the center stairway, the elevator, and in close proximity to the east stairway. The fire assumes plastic, wood, and other cellulose materials such as cardboard with a projected maximum heat release rate of 4.5 MW with a t2 ramp up curve equivalent to 0.047 kW/s2. An additional issue is the trash chute that extends up all four floors. This is a metal lined chute with a temperature-dependent release mechanism. The room is equipped with smoke detection and fire sprinklers, in addition to the fusible link for the trash chute. The fire is contained within the room for the duration of the fire scenario and the fusible link to the trash chute activates at 165° F. All egress paths in the vicinity of this space maintain tenability during the 9-minute FDS run time of the model

    Design of a Proprioceptive Actuator Utilizing a Cycloidal Gearbox

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    Legged robotics creates the demand for high torque compact actuators able to develop high instantaneous torque. Proprioceptive actuator design theory is a design theory that removes the need for a torque feedback device and relies on the stiffness in the leg for absorbing the high Ground Impact Forces created by walking locomotion. It utilizes a high torque density motor paired with a gearbox with a high gear ratio for torque multiplication. Previously work has been done to design a proprioceptive actuator design that utilizes a planetary gearbox to create a modular low-cost actuator for legged robotics. The purpose of this thesis is to design and analyze a proprioceptive actuator that utilizes a cycloidal gearbox design to test the feasibility of the gearbox design and look at the advantages it might bring over a planetary gearbox design. A cycloidal gearbox utilizes eccentric motion of cycloidal disks, made of epicycloids, to create a high gear ratio in a very limited space without having to rely on expensive gears for torque multiplication purposes. A prototype low-cost actuator was developed using a 2-disk cycloidal gearbox in its design. It was tested for wear life and torque control and was able to meet the torque and operation requirements of the Cal Poly legged robotics project. The design was also optimized to be made using low-cost additive manufacturing techniques rather than relying on conventional machining

    Mount SAC Gym & Aquatics Center: Fire & Life Safety Report

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    This report has been prepared to review and analyze the Fire and Life Safety status of the proposed Gym & Aquatics building at Mt. San Antonio College. This was done using two methods: prescriptive and performance based. The prescriptive section examines the explicitly code-mandated requirements for the building and the performance-based section examines implicit requirements for the building based on the goals presented in the Life Safety Code, NFPA 101. The subject building is a 147,000 square foot, two-story, steel-framed athletics complex occupied primarily for assembly and business uses. The structure has an indoor and outdoor component with two gymnasiums inside the building and two competition pools in the outdoor component. The second floor of the building consists predominantly of a fitness center and access to the upper viewing deck for the outdoor pool. The first floor also has fitness facilities, team facilities, and coaching offices. The complex will be used daily for fitness, training, and practices, and it will be used intermittently for competitions and special events. The prescriptive analysis found that the building requires fire resistive construction as prescribed, appropriately rated finishes, adequate exit quantities, an automatic fire sprinkler system, and a manual fire alarm system with voice alarm and visual notification devices located throughout the building. All requirements were met except for four egress system deficiencies. One exit stair shaft providing egress for 2nd floor occupants was proposed with a rating of 1-Hr and is required to be increased to 2-Hr. Additionally, the maximum exit travel distance is exceeded for a portion of the Wellness Center. A second rated exit stair is recommended to eliminate this deficiency. Third, there are two exits in the Main Gym that are not spaced at the minimum separation distance of 58 ft. for that room. Shifting the doorway by 10 ft. would resolve this issue. Finally, the exit discharges to the Northwest and South of the building have insufficient width on the path to the public way. It is recommended to shift the Northwest gate to be shifted to discharge directly to the public way and for a safe dispersal area to be provided on the Southern court of the building. The performance-based analysis examined an exiting analysis in a fire scenario to compare the available safe egress time (ASET) to the required safe egress time (RSET). The selected design fire was located on the first floor in the concessions stand near the main lobby entrance. The basis of selection was the proximity to the primary exiting space for multiple densely populated areas of the building. The heat release rate for the fire was based on the burning of potato chips on open wire racks and igniting a neighboring storage array of bagged cola syrup. The RSET value was calculated by summing the time to detection, time to notification, pre-movement time, and movement time, totaling 9.14 minutes. The ASET time was found by selecting a tenability criteria and calculating the time to untenable conditions. The selected criteria were smoke layer descent and 3-meter visibility at a level of 6 ft. above the highest walking surface. Of these two, the visibility was more restrictive, with an ASET value of 2.5 minutes. In conclusion, based on these criteria, there was not sufficient time to protect the occupants from untenable conditions in the design fire scenario. Based on the findings of the prescriptive and performance-based analysis, final recommendations have been provided at the end of the report to increase the fire rating of the exit stair shaft from 1-Hr to 2-Hr as well as adding a new exit from the Wellness Center

    The Importance of Street Lighting: A Study in San Luis Obispo

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    The purpose of this report is to shed light on the importance of resident and student safety in the City of San Luis Obispo. The report goes over exact locations of frequently used areas in the City of SLO that lack street lighting. By spreading awareness, studying different lighting types, and getting citizen input, it helps to plan out a method of bettering San Luis Obispo’s streets. The report presents information on efficient and cost-effective lighting in order to integrate them into a location specific proposal that the city could utilize. By the end of the report, readers will be educated on the positive and negative impacts of lighting, different types of lighting, how to reduce the costs of lighting, and where they should be installed

    DIY Cell Incubator

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    The purpose of creating a cell Incubator is for the development of cell and tissue production in laboratory settings. Large scale research projects and the medical community grow cells for various reasons, including experiments and creating tissue for patients. However, they cannot simply depend on growing cells in a petri dish that sit on a rack at room temperature. To grow heathy cells in the fastest way possible, they use cell incubators. Cell incubators create an atmosphere within the incubation bay that is designed to promote cell growth. The three main components that need to be constantly regulated, using a feedback process, are temperature, humidity, and pressure of carbon dioxide. For optimal cell growth, the incubation bay needs to create an environment with controllable and accurate temperature, humidity, and a C02 concentration. Budget is a very large factor with any biomedical company or research university. Being able to purchase extremely expensive lab equipment oftentimes presents many obstacles. Most large and expensive incubators that can house a moderate amount of cell samples can exceed the price range of $5000 [1]. In addition, the incubator is completely enclosed which often advantageous, but this means that there cannot be any extra measuring equipment placed into the incubator with it. However, this project creates a cell incubator that is for the smaller scale use. This would have a smaller incubating bay, but would, in turn, be cheaper to produce and have the capabilities powering an electronic microscope to observe the cells while in the incubation bay. Thus, the incubator would be more accessible to a larger audience that would not otherwise have access to a large-scale cell incubation. Also, the DIY-nature of the incubator allows for more flexibility with how the cells are incubated during the experiment

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