Matching Items (301)
Description
This project details a magnetic field detection system that can be mounted on an unmanned aerial vehicle (UAV). The system is comprised of analog circuitry to detect and process the magnetic signals, digital circuitry to sample and store the data outputted from the analog front end, and finally a UAV to carry and mobilize the electronic parts. The system should be able to sense magnetic fields from power transmission lines, enabling the determination of whether or not current is running through the power line.
ContributorsTheoharatos, Dimitrios (Co-author) / Brazones, Ryan (Co-author) / Pagaduan, Patrick (Co-author) / Allee, David (Thesis director) / Karady, George (Committee member) / Barrett, The Honors College (Contributor) / Electrical Engineering Program (Contributor)
Created2015-05
Description
While SPICE circuit simulation software gives researchers and industry accurate information regarding the behavior and characteristics of circuits, the auditory effect of SPICE circuit simulation on audio circuits is not well documented. This project takes a thoroughly analyzed and popular audio effect circuit called the Ibanez Tubescreamer and simulates its distortion effect on a .wav file in order to hear the effect of SPICE simulation. Specifically, the TS-808 schematic is drawn in the SPICE program LTSPICE and simulated using generated sinusoids and recorded .wav files. Specific components are imported using .MODEL and .SUBCKT to accurately represent the diodes, bipolar transistors, op amps, and other components in order to hear how each component affects the response. Various transient responses are extracted as .wav files and assembled as figures in order to characterize the result of the circuit on the input. Once the actual circuit is built and debugged, all of the same transient analysis is applied and then compared to the SPICE simulation figures gathered in the digital simulation. These results are then compared along with a subjective hearing test of the digital simulation and analog circuit in order to test the validity of the SPICE simulations. The digital simulations reveal that the distortion follows the signature characteristics of Ibanez Tubescreamer which shows that SPICE simulation will give insight into the real effects of audio circuits modeled in SPICE programs. Diodes--such as Silicon, Germanium, Zener, Red LEDs and Blue LEDs--can dramatically change the waveforms and sound of the inputs within the circuit where as the Op-amps--such as the JRC4558, TL072, and NE5532--have little to no effect on the waveforms and subjective effects on the output .wav files. After building the circuit and hearing the difference between the analog circuit and digital simulation, the differences between the two are apparent but very similar in nature--proving that the SPICE simulation can give meaningful insight into the sound of the actual analog circuit. Some of the differences can be explained by the variance of equipment and environment used in recording and playback. Since this project did not use high fidelity audio recording equipment and consistency in the equipment used for playback, it is uncertain if the simulation and actual circuit could be classified as completely accurate. Any further work on the project would be recording and playing back in a constant environment and looking into a wider range of specific components instead of looking into one permutation.
ContributorsMacias, Cole Thomas (Author) / Goryll, Michael (Thesis director) / Yu, Shimeng (Committee member) / Electrical Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2015-12
Description
Familiar Places: Ghosts of a Memory is a thesis exhibition, presented in Gallery 100 in Tempe, AZ, accompanied by a written investigation into the function of photography in the home and art. This project is a diaristic photographic record including images of myself, my family, my environment, and mementos or objects that embody family history. I am interested in what we hold onto to keep memories and create our "home". I moved frequently growing up so my sense of home became firmly grounded in family, tradition, and the things we kept close, making home a practiced space not a place. This thesis project explores how material culture, including photographs, is used in creating the space of the home. Questions regarding the nature of the photograph as a memory keeping device or memory trigger is investigated to understand their usefulness and accuracy to the memory. A deeper examination of the difference between an artist's photograph of family and home versus the family photograph is discussed and presented by utilizing installations in the exhibition. The photographs can be seen at www.gwendolynanne.com
ContributorsDavies, Gwendolyn Anne (Author) / Smith, Stephen Mark (Thesis director) / Danh, Binh (Committee member) / Loebenberg, Abby (Committee member) / School of Art (Contributor) / Barrett, The Honors College (Contributor)
Created2015-12
Description
The purpose of this thesis project is to analyze the impact that patient death has on long-term care providers. This study draws upon my own experience working as a licensed nursing assistant in a long-term care facility and also uses a qualitative analysis of six semi-structured interviews with other nursing assistants and hospice volunteers. With patient death being an unavoidable part of working in this area of healthcare, I explore how these care providers cope with losing their patients and the effectiveness of these coping mechanisms. Some strategies found that aided in coping with grief included staying detached from patients, being distracted by other aspects of the job, receiving support from co-workers, family members and/or supervisors, and having a religious outlook on what happens following death. In addition to these, I argue that care providers also utilize the unconscious defense mechanism of repression to avoid their feelings of grief and guilt. Repressing the grief and emotions that come along with patient death can protect the individual from additional pain in order for them to continue to do their difficult jobs. Being distracted by other patients also aids in the repression process by avoiding personal feelings temporarily. I also look into factors that have been found to affect the level of grief including the caregiver’s closeness to the patient, level of preparedness for the death, and first experience of losing a patient. Ultimately, I show that the common feelings accompanied by patient death (sadness, anger and stress) and the occurrence of burnout are harmful symptoms of the repression taking place.
ContributorsMasterson, Kaitlin (Author) / Loebenberg, Abby (Thesis director) / Mack, Robert (Committee member) / School of Mathematical and Statistical Sciences (Contributor) / School of Molecular Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
This project revolves around the enhancement of an existing data collection device utilized for patient monitoring within the framework of the leadership of Shad Roundy's team. The initial deployment involved a 10-Axis Internal Measurement Unit (IMU) sourced from MetaMotionS (MMS) for comprehensive data acquisition from patients at University of Utah’s Downtown Behavioral Health Clinic (BHC). The primary objective transitioned towards optimizing the device's functionality, particularly addressing challenges related to limited battery life, device size, and data transfer efficiency. A systematic approach was undertaken to address these challenges, involving meticulous research into alternative batteries, with the CL 582728 identified as a promising solution capable of extending the device's operational lifespan to around one month. Additionally, the initiative aimed at refining data collection processes through real-time transmission facilitated by Raspberry Pi devices at BHC via Bluetooth, leveraging the energy-efficient Nordic Semiconductor nRF52840 Bluetooth chip. The project also entailed intricate circuit design endeavors utilizing Autodesk Eagle, with reference to a model provided by MMS. Despite encountering programming challenges for the microcontroller, the groundwork was laid for a conceptual solution, with plans to delegate the programming task to a team member possessing advanced expertise. Though the device has yet to be fabricated, the design is near completion.
ContributorsJust, William (Author) / Andersen, Erik (Thesis director) / Roundy, Shad (Committee member) / Barrett, The Honors College (Contributor) / Electrical Engineering Program (Contributor)
Created2024-05
DescriptionCreated a healthy and affordable snack option for ASU students that would contribute to everyday student activities.
ContributorsRicks, Wyatte (Author) / Cuesta, Carlos (Co-author) / Cuesta, Miguel (Co-author) / Bastuba, Ryan (Co-author) / Szczesniak, Jonathan (Co-author) / Brannan, Colin (Co-author) / Byrne, Jared (Thesis director) / Giles, Bret (Committee member) / Griffin, Joy (Committee member) / Barrett, The Honors College (Contributor) / Engineering Programs (Contributor)
Created2024-05
Description
Braille Retail is a student-led effort to promote awareness and inclusivity for visually impaired and blind individuals through legible braille designs on fabric. Our mission is to bring awareness to the visually impaired and blind community and increase braille literacy. We plan to reach our mission by placing legible braille and its translation on our sweatshirts. Furthermore, we want to support the visually impaired and blind community by donating 5% of our profits to local blind charities.
ContributorsShereck, Kennedy (Author) / Pearson, Morgan (Co-author) / O'Shea, Hannah (Co-author) / Soto, Tatum (Co-author) / Byrne, Jared (Thesis director) / Giles, Bret (Committee member) / Thomasson, Anna (Committee member) / Barrett, The Honors College (Contributor) / Department of Marketing (Contributor) / Department of Information Systems (Contributor)
Created2024-05
Description
Braille Retail is a student-led effort to promote awareness and inclusivity for visually
impaired and blind individuals through legible braille designs on fabric. Our mission is to bring awareness to the visually impaired and blind community and increase braille literacy. We plan to reach our mission by placing legible braille and its translation on our sweatshirts. Furthermore, we want to support the visually impaired and blind community by donating 5% of our profits to local blind charities.
ContributorsO'Shea, Hannah (Author) / Shereck, Kennedy (Co-author) / Pearson, Morgan (Co-author) / Soto, Tatum (Co-author) / Byrne, Jared (Thesis director) / Giles, Bret (Committee member) / Thomasson, Anna (Committee member) / Barrett, The Honors College (Contributor) / College of Health Solutions (Contributor) / Department of Marketing (Contributor)
Created2024-05
Description
SnackHax aims at revolutionizing the way college students fuel their academic and professional
pursuits. By offering thoughtfully crafted snack packages, SnackHax seeks to provide busy students with
the necessary energy and nutrients to navigate the challenges of college life with ease and vitality.
Additionally, SnackHax plans to disrupt the care packaging market by offering personalized snack care
packages for parents to send to their kids in college through a subscription service model. Moreover,
SnackHax is looking into additional markets including the corporate and hospitality sectors.
ContributorsBastuba, Ryan (Author) / Chacon, Miguel (Co-author) / Chacon, Carlos (Co-author) / Ricks, Wyatt (Co-author) / Szczesniak, Jonathan (Co-author) / Brannan, Collin (Co-author) / Byrne, Jared (Thesis director) / Giles, Bret (Committee member) / Barrett, The Honors College (Contributor) / Tech Entrepreneurship & Mgmt (Contributor)
Created2024-05
Description
The thesis explores the avenues of machine learning principles in object detection using TensorFlow 2 Object Detection API Libraries for implementation. Integrating object detection capabilities into ESP-32 cameras can enhance functionality in the capstone dragster application and potential applications, such as autonomous robots. The research implements the TensorFlow 2 Object Detection API, a widely used framework for training and deploying object detection models. By leveraging the pre-trained models available in the API, the system can detect a wide range of objects with high accuracy and speed. Fine-tuning these models using a custom dataset allows us to enhance their performance in detecting specific objects of interest. Experiments to identify strengths and weaknesses of each model's implementation before and after training using similar images were evaluated The thesis also explores the potential limitations and challenges of deploying object detection on real-time ESP-32 cameras, such as limited computational resources, costs, and power constraints. The results obtained from the experiments demonstrate the feasibility and effectiveness of implementing object detection on ESP-32 cameras using the TensorFlow2 Object Detection API. The system achieves satisfactory accuracy and real-time processing capabilities, making it suitable for various practical applications. Overall, this thesis provides a foundation for further advancements and optimizations in the integration of object detection capabilities into small, low-power devices such as ESP-32 cameras and a crossroad to explore its applicability for other image-capturing and processing devices in industrial, automotive, and defense sectors of industry.
ContributorsMani, Vinesh (Author) / Tsakalis, Konstantinos (Thesis director) / Jayasuriya, Suren (Committee member) / Barrett, The Honors College (Contributor) / Electrical Engineering Program (Contributor)
Created2024-05