Worksheet 10 - Patch,
2022
University of Southern Maine
Worksheet 10 - Patch, Ashanthi Maxworth Phd
Antenna Design With HFSS
In this worksheet, steps are given to create a slotted rectangular microstrip patch antenna with an inset feed using a stripline. The patch antenna is operating in the TM10 mode.
Worksheet 09 Horn,
2022
University of Southern Maine
Worksheet 09 Horn, Ashanthi Maxworth Phd
Antenna Design With HFSS
This worksheet designs a pyramidal horn antenna fed by a waveport.
Worksheet 08 - Helix,
2022
University of Southern Maine
Worksheet 08 - Helix, Ashanthi Maxworth Phd
Antenna Design With HFSS
This worksheet creates a helical antenna operating in the axial mode. The antenna is mounted on a ground plane. The users can change the circumference of the helix and change the operating mode to broadside or conical if they wish.
Worksheet 06 - Arrays,
2022
University of Southern Maine
Worksheet 06 - Arrays, Ashanthi Maxworth Phd
Antenna Design With HFSS
This worksheet designs an antenna array with three identical dipole elemetns. The antenna is operating as a broadside array. By changing the parameters the users can view the grating lobes in addition to the main lobe.
Worksheet 07 - Bicone,
2022
University of Southern Maine
Worksheet 07 - Bicone, Ashanthi Maxworth Phd
Antenna Design With HFSS
In this worksheet, setps are given to design a full-wavelength biconical antenna. This is a broadband antenna. The worksheet also shows how to observe surface currents.
Worksheet 02 - Meshing,
2022
University of Southern Maine
Worksheet 02 - Meshing, Ashanthi Maxworth Phd
Antenna Design With HFSS
This worksheet is designed to oberserve the variations in results when the mesh is varied from coarse to fine, hence how to find the optimum mesh size such that we can get accurate results while not compromising computational power.
Worksheet 05 - Loop,
2022
University of Southern Maine
Worksheet 05 - Loop, Ashanthi Maxworth Phd
Antenna Design With HFSS
In this worksheet, the users can design a small loop. The small loop shows low directivity, hence at the end of the worksheet, the users can chanage the design parameters and increase the directivity.
Worksheet 04 - Dipole,
2022
University of Southern Maine
Worksheet 04 - Dipole, Ashanthi Maxworth Phd
Antenna Design With HFSS
This worksheet shows how to create a half-wavelength dipole, set the feeder through a port, observe directivity, half-power beamwidth, etc.
Worksheet 03 - Near Field,
2022
University of Southern Maine
Worksheet 03 - Near Field, Ashanthi Maxworth Phd
Antenna Design With HFSS
This worksheet guides students to change the observational region between, reactive near field, radiating near field, and far-field.
Measuring The Electrical Properties Of 3d Printed Plastics In The W-Band,
2022
University of Arkansas, Fayetteville
Measuring The Electrical Properties Of 3d Printed Plastics In The W-Band, Noah Gregory
Electrical Engineering Undergraduate Honors Theses
3D printers are a method of additive manufacturing that consists of layering material to produce a 3D structure. There are many types of 3D printers as well as many types of materials that are capable of being printed with. The most cost-effective and well documented method of 3D printing is called Fused Deposition Modeling (FDM). FDM printers work by feeding a thin strand of plastic filament through a heated extruder nozzle. This plastic is then deposited on a flat, typically heated, surface called a print bed. The part is then built by depositing thin layers of plastic in the shape ...
Signal Analysis Of Photovoltaic Systems For Multilevel Cybersecurity,
2022
University of Arkansas, Fayetteville
Signal Analysis Of Photovoltaic Systems For Multilevel Cybersecurity, Wesley G. Schwartz
Electrical Engineering Undergraduate Honors Theses
The cybersecurity of grid-connected power electronics is a rapidly developing field as more and more of these devices become a part of the Internet of Things. The objective of this thesis to analyze the current control signals of a photovoltaic (PV) inverter and develop an interface board for the implementation of a new cyber-secure controller.
In this thesis, the testing and in-depth analysis of the current PV inverter control system will be conducted. Using the data collected, an interface board will be developed to allow the use of the Unified Control Board (UCB), developed by Chris Farnell, in the PV ...
Co-Planar Waveguides For Microwave Atom Chips,
2022
William & Mary
Co-Planar Waveguides For Microwave Atom Chips, Morgan Logsdon
Undergraduate Honors Theses
This thesis describes research to develop co-planar waveguides (CPW) for coupling microwaves from mm-scale coaxial cables into 50 μm-scale microstrip transmission lines of a microwave atom chip. This new atom chip confines and manipulates atoms using spin-specific microwave AC Zeeman potentials and is particularly well suited for trapped atom interferometry. The coaxial-to-microstrip coupler scheme uses a focused CPW (FCPW) that shrinks the microwave field mode while maintaining a constant 50 Ω impedance for optimal power coupling. The FCPW development includes the simulation, design, fabrication, and testing of multiple CPW and microstrip prototypes using aluminum nitride substrates. Notably, the FCPW approach ...
Unconventional Computation Including Quantum Computation,
2022
University of Tennessee, Knoxville
Unconventional Computation Including Quantum Computation, Bruce J. Maclennan
Faculty Publications and Other Works -- EECS
Unconventional computation (or non-standard computation) refers to the use of non-traditional technologies and computing paradigms. As we approach the limits of Moore’s Law, progress in computation will depend on going beyond binary electronics and on exploring new paradigms and technologies for information processing and control. This book surveys some topics relevant to unconventional computation, including the definition of unconventional computations, the physics of computation, quantum computation, DNA and molecular computation, and analog computation. This book is the content of a course taught at UTK.
Combat Robot,
2022
Ohio Northern University
Combat Robot, Wayne Lambert, Elijah Harris, Brian Eiseman, Jordan Meyer
ONU Student Research Colloquium
The senior capstone project that was tasked to the team was the decision of choosing a challenge within a national robotics competition. The group decided to compete at the National Robotics Challenge in Marion, Ohio. The idea was to participate in the combat robot competition at this NRC event. Once this decision had been made the next steps were to get an idea of what the rules and requirements of the competition were and to try and to sketch a very rough drawing of what the ideal robot should look like. From there it was decided to start a timeline ...
A Real-Time Gaze Estimation Framework For Mobile Devices,
2022
University of Rochester
A Real-Time Gaze Estimation Framework For Mobile Devices, Yu Feng, Nathan Goulding-Hotta, Asif Khan, Hans Reyserhove, Yuhao Zhu
Frameless
Tracking eyes becomes an important component to unleash new ways of human-machine interactions in augmented and virtual reality (AR/VR). To make the eye tracking system responsible, eye tracking systems need to operate at a real-time rate (> 30Hz). However, from our experiments, modern gaze tracking algorithms operate at most 5 Hz on mobile processors. In this talk, we present a real-time eye tracking algorithm that operates at 30 Hz on a mobile processor. Our algorithm achieves sub-0.5° gaze accuracy, while requiring only 30K parameters, which is one to two orders of magnitude smaller than state-of-the-art algorithms.
Manipulating Image Luminance To Improve Eye Gaze And Verbal Behavior In Autistic Children,
2022
Chapman University
Manipulating Image Luminance To Improve Eye Gaze And Verbal Behavior In Autistic Children, Louanne Boyd, Vincent Berardi, Deanna Hughes, Franceli L. Cibrian, Jazette Johnson, Viseth Sean, Eliza Delpizzo-Cheng, Brandon Mackin, Ayra Tusneem, Riya Mody, Sara Jones, Karen Lotich
Engineering Faculty Articles and Research
Autism has been characterized by a tendency to attend to the local visual details over surveying an image to understand the gist–a phenomenon called local interference. This sensory processing trait has been found to negatively impact social communication. Although much work has been conducted to understand these traits, little to no work has been conducted to intervene to provide support for local interference. Additionally, recent understanding of autism now introduces the core role of sensory processing and its impact on social communication. However, no interventions to the end of our knowledge have been explored to leverage this relationship. This ...
Learning Domain Invariant Information To Enhance Presentation Attack Detection In Visible Face Recognition Systems,
2022
University of Nebraska-Lincoln
Learning Domain Invariant Information To Enhance Presentation Attack Detection In Visible Face Recognition Systems, Jennifer Hamblin
Theses, Dissertations, and Student Research from Electrical & Computer Engineering
Face signatures, including size, shape, texture, skin tone, eye color, appearance, and scars/marks, are widely used as discriminative, biometric information for access control. Despite recent advancements in facial recognition systems, presentation attacks on facial recognition systems have become increasingly sophisticated. The ability to detect presentation attacks or spoofing attempts is a pressing concern for the integrity, security, and trust of facial recognition systems. Multi-spectral imaging has been previously introduced as a way to improve presentation attack detection by utilizing sensors that are sensitive to different regions of the electromagnetic spectrum (e.g., visible, near infrared, long-wave infrared). Although multi-spectral ...
Applications Of Unsupervised Machine Learning In Autism Spectrum Disorder Research: A Review,
2022
Chapman University
Applications Of Unsupervised Machine Learning In Autism Spectrum Disorder Research: A Review, Chelsea Parlett-Pelleriti, Elizabeth Stevens, Dennis R. Dixon, Erik J. Linstead
Engineering Faculty Articles and Research
Large amounts of autism spectrum disorder (ASD) data is created through hospitals, therapy centers, and mobile applications; however, much of this rich data does not have pre-existing classes or labels. Large amounts of data—both genetic and behavioral—that are collected as part of scientific studies or a part of treatment can provide a deeper, more nuanced insight into both diagnosis and treatment of ASD. This paper reviews 43 papers using unsupervised machine learning in ASD, including k-means clustering, hierarchical clustering, model-based clustering, and self-organizing maps. The aim of this review is to provide a survey of the current ...
Eye-Gaze-Controlled Hmds And Mfd For Military Aircraft,
2022
Indian Institute of Science
Eye-Gaze-Controlled Hmds And Mfd For Military Aircraft, Lrd Murthy, Abhishek Mukhopadhyay, Somnath Arjun, Varshith Yelleti, Peter Thomas, Dilli Babu Mohan, Pradipta Biswas
Journal of Aviation Technology and Engineering
Eye-gaze-controlled interfaces allow the direct manipulation of a graphical user interface by looking at it. This technology has great potential in military aviation, in particular, operating different displays in situations where pilots’ hands are occupied with flying the aircraft. This paper reports studies on analyzing the accuracy of eye-gaze-controlled interfaces inside aircraft undertaking representative flying missions. We report that using eye-gaze-controlled interfaces, pilots can undertake representative pointing and selection tasks at less than two seconds on average in a transport aircraft. Further, we analyzed the accuracy of eye-gaze-tracking glasses under various G load factors and analyzed the failure modes. We ...
Enhanced Study Of Complex Systems By Unveiling Hidden Symmetries With Dynamical Visibility,
2022
Eastern Washington University
Enhanced Study Of Complex Systems By Unveiling Hidden Symmetries With Dynamical Visibility, Nhat Vu Minh Nguyen
2022 Symposium
One of the great challenges in complex and chaotic dynamics is to reveal its deterministic structures. These temporal dynamical structures are sometimes a consequence of hidden symmetries. Detecting and understanding them can allow the study of complex systems even without knowing the full underlying mathematical description of the system. Here we introduce a new technique, called Dynamical Visibility, that quantifies temporal correlations of the dynamics based upon some symmetry conditions. This visibility measures the departure of the dynamics from internal symmetries. We apply this technique to well-known chaotic systems, such as the logistic map and the circle map, as well ...