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High Performance Radar System
Get PDFThis report covers the design, fabrication, and test of an X-band FMCW radar inspired by the radars from Cal Poly course EE 541, “Advanced Microwave Laboratory.” In this class, 2.4GHz Doppler and FMCW radars are designed and built using consumer off-the-shelf (COTS) components. Operability is the focus of this class, sacrificing performance, accuracy, and precision. this project aims to improve upon those radars by using custom-designed components instead of COTS components and shifting the operating frequency to 10GHz.. The use of custom components can improve output power and frequency stability, and higher frequency reduces component size. The FCC allows amateur operation on bands near 5, 10, and 25GHz. Cal Poly’s equipment (HP8720C VNA) has a 20GHz maximum frequency; hence, 10GHz is chosen for the operating frequency. This project is an exercise in RF design encompassing the entirety of Cal Poly’s RF curriculum. From Cal Poly courses EE 335 and 402, guided and free-space propagation of electromagnetic waves are present everywhere in the system, from synthesis to radiation. Custom amplifiers from Cal Poly course EE 405, as well as antennas from course EE 533 are used. Mixers, oscillators, filters and detectors are inspired by Cal Poly courses EE 440, 502, and 529
Ocean Sight One: Mixed Reality Experience
Get PDFOcean Sight One is an interdisciplinary project group consisting of Cal Poly staff and students from several different departments. It exists to educate the public on the marine ecosystems near the Santa Barbara coastline that is the home of twenty-three abandoned oil rigs. Despite one’s initial reaction to these massive abandoned structures, they actually provide an incredibly diverse dwelling for numerous forms of sea life. The site is a shining beacon for marine ecology researchers trying to formulate how to preserve wildlife in an era of worsening global environmental disruptions. The future of these oil rigs are not certain, as the State of California will decide on moving forward with one of the several proposed solutions to safely maintain the rigs, dismantle them completely, exclusively remove the tops of the rigs, etc. Ocean Sight One does not side with any solution, but wishes to express the context and outcomes of the potential solutions in an unbiased format. As part of a portable exhibit, a mobile AR app and VR headset will be available for users to get a supplemental visual education on the information provided by the research compiled by the Ocean Sight One team. Extended Reality products are a growing field that much of the public has not been fully engrossed in. As the technology advances, the medium becomes easier to develop for and can provide experiences that are suitable for a variety of people. Many of the mixed reality experiences do not attempt to strike a balance between education and entertainment, they tend to be one or the other. The work will consist of some miniature game-like activities, several unique 360 O videos, and informational tidbits about the oil rig ecosystems. User testing has been integrated throughout workable builds of the project to gather data on how the applications serve as an engaging way to learn bits of information. The final builds of the project will be used as an engagement tool for visitors of Ocean Sight One hosted exhibits
In an Animal’s Shoes: Facing Animal Suffering as a Difficulty of Reality
Get PDFThis paper examines the challenges posed by confronting the topic of animal suffering in animal husbandry. The predominant positions within animal ethics mainly focus on the moral status of humans and animals, arguing that killing farm animals is morally wrong due to specifiable intrinsic properties that grant farm animals significant moral status. Such positions are derived from a detached perspective that advocates for rational consistency. This paper opposes this detached perspective. By drawing on Cora Diamond’s concept of a difficulty of reality, it contends that facing animal suffering, including changing one’s habits and attitudes towards this suffering, is instead best accomplished by adopting a situated perspective. Being affected by animal suffering is mediated by our own existential condition as an embodied being exposed to vulnerability. This embodied perspective, which more generally informs our encounters with the world, is derived not from rational principles, but from our immersion in a specific worldly context. Effectively criticizing norms of animal treatment requires engaging with the world with all of our moral capacities, such as imagination and emotional response, from a non-detached perspective
Localizing 3D Data From 2D Fluoroscopy X-Rays
No full textCurrently, orthopedic surgeons use 2D fluoroscopy x ray imaging mid operation to analyze the location and rotation of the pelvis and the precision of the implantation geometrically. However, the pelvis of a given patient simply isn’t a 2-dimensional object, making it difficult to read the 2D imaging with exact precision every single time. Our goal is to take a mid-operational 2D image from a fluoroscopy X-ray during a total hip arthroplasty surgery and overlay it to the 3D model from a pre-operational CT scan and pinpoint the 3D location of the pelvis from the 2D fluoroscopy. Thus, our product will be indicated for patients undergoing total hip arthroplasty surgery. Currently there are many existing patents relevant to our goals, one of which includes Location-based Object Identification and Data Visualization where we would have to be careful in our method of data collection for localization to avoid infringement. After investigating existing products and potential competition, we analyzed the design specifications and customer requirements using a house of quality. We examined customer requirements like price and run time and compared them to engineering specifications like file size and operating system. Once we understood our basic goals for the project, the entire engineering process was outlined in the form of a Gantt chart with a corresponding network diagram that highlights the steps of our process that make up our critical path. We also concluded that as of now, we have nothing in our plans that requires money for a budget, though this is subject to change
Cal Poly Athletics Social Media Look and Feel
Get PDFFor my senior project I will be revamping the Cal Poly Athletics Social Media Look and Feel with a new social media specific branding guide and mock ups of posts specified to the Cal Poly Football team. The goal of my project is to create a social media look for Instagram and Twitter that will drive more engagement and interest with followers and fans on campus. I will be using the Social Information Processing Theory (SIPT) to describe the importance of humanizing players and creating connections through social media. I will also be defining the three most important elements of branding to create a branding guideline that will keep the audience engaged in the events offered by the teams. The final product will include a summary of the importance of social media marketing, posting ideas, and a mockup of the social media graphics. The deliverables will be available as links to my BeHance page digitally
Urban Densification at Twin Creeks Apartments: High-Density Living with Low-Density Luxuries
Get PDFUrban sprawl is characterized by the rapid growth of the extent of cities and towns. In the United States, urban sprawl is greatly influenced by housing density. In the past half-century, developers have favored constructing and consumers have preferred living in neighborhoods of detached, single-family homes. This is because low-density living provides more housing services, or additional benefits, than most high-density developments, such as apartments and townhomes. Residents of low-density living often have more privacy, outdoor space, interior natural light, and many other benefits over residents of higher-density developments. However, Twin Creeks Apartments, located in San Luis Obispo, California, is an example of how a high-density development can be comfortable for someone accustomed to living in a single-family home. The design team of Twin Creeks worked with the goal in mind to provide many of the same housing services commonly seen in low-density developments, creating a high-density living environment that appeals to people of all lifestyles. In the future, developers can incorporate strategies used by the project team of Twin Creeks to increase the comfort of their project’s residents while simultaneously combating excessive urban sprawl and increasing urban densification
Catching Babies: Helping Students Understand Reproductive Justice Through Black Maternal Health
Get PDFExploration of Semi-supervised Learning for Convolutional Neural Networks
Get PDFTraining a neural network requires a large amount of labeled data that has to be created by either human annotation or by very specifically created methods. Currently, there is a vast abundance of unlabeled data that is neglected sitting on servers, hard drives, websites, etc. These untapped data sources serve as the inspiration for this paper.
The goal of this thesis is to explore and test various methods of semi-supervised learning (SSL) for convolutional neural networks (CNN). These methods will be analyzed and evaluated based on their accuracy on a test set of data. Since this particular neural network will be used to offer paths for an autonomous robot, it is important for the networks to be lightweight in scale. This paper will then take this assortment of smaller neural networks and run them through a variety of semi-supervised training methods. The first method is to have a teacher model that is trained on properly labeled data create labels for unlabeled data and add this to the training set for the next student model. From this base method, a few variations were tried in the hopes of getting a significant improvement. The first variation tested by this thesis is the effects of having this teacher and student cycle run more than one iteration. After that, the effects of using the confidence values that the models produced were explored by both including only data with confidence above a certain value and in a different test, relabeling data below a confidence threshold. The last variation this thesis explored was to have two teacher models concurrently and have the combination of those two models decide on the proper label for the unlabeled data. Through exploration and testing, these methods are evaluated in the results section as to which one produces the best results for SSL