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Articles 1 - 14 of 14
Full-Text Articles in Engineering
Negative-Triangularity Configuration On East: Analysis Of Engineering Limitations On Superconducting, D-Shaped, Target-Diverted Plasmas, David A. Weldon
Negative-Triangularity Configuration On East: Analysis Of Engineering Limitations On Superconducting, D-Shaped, Target-Diverted Plasmas, David A. Weldon
Graduate Theses - Electrical and Computer Engineering
Thermonuclear fusion is so named because of the high temperature that the majority of the fuel must maintain such that nuclei can overcome the electrostatic force, fuse, and produce energy. However, the ions and electrons (plasma) are so hot that any material used to confine them would be destroyed. To achieve confinement while maintaining the 50,000,000 K temperature needed for self-sustaining fusion, magnetic confinement is needed. As of 2019, the tokamak is the leading candidate for a practical fusion reactor. In recent years, tokamak research has repeatedly shown that the edge magneto-hydrodynamic stability is critical for handling the power to …
Inter-Slice Compression And Reconstruction Of Glioma Magnetic Resonance Imaging (Mri) Data Using Encoder-Decoder Neural Networks, Gavin Michael Karr
Inter-Slice Compression And Reconstruction Of Glioma Magnetic Resonance Imaging (Mri) Data Using Encoder-Decoder Neural Networks, Gavin Michael Karr
Graduate Theses - Electrical and Computer Engineering
Magnetic Resonance Imaging (MRI) scans of patients with brain tumors are an important source of pre-surgical medical information. These three-dimensional image volumes can be represented as a stack of two-dimensional image slices. The objective of this thesis is to compress the size of these image volumes by removing the odd-numbered slices and reconstruct the image volume using an encoder-decoder convolutional neural network. This neural network architecture is based on a modified form of the U-net segmentation network, which has been adjusted to allow for multiple image inputs and to support a network capable of generating new image slices. A novel …
Accuracy Improvement Of Pedestrian Trajectory Prediction By An Extended Kalman Filter And Pedestrian Behavior Classification, Jiayu Guo
Graduate Theses - Electrical and Computer Engineering
The objective of this thesis is to improve the accuracy of predicting motion trajectory, i.e., speed and direction, of a pedestrian in front of an Ego Vehicle which has a Mobileye camera with an advanced driver assistance system (ADAS). The Ego Vehicle captures and records videos of pedestrians in front of it, and these videos are analyzed to predict a pedestrian trajectory from instantaneous, random actions of a pedestrian. Instant actions include, but are not limited to, walking at a constant speed, sudden accelerations/decelerations, sudden dodging from the Ego Vehicle, sudden advancements to the Ego Vehicle, sudden withdrawals or sudden …
Harmonic Detection And Selectively Focusing Electromagnetic Waves Onto Nonlinear Targets Using Time-Reversal, Joseph Michael Faia
Harmonic Detection And Selectively Focusing Electromagnetic Waves Onto Nonlinear Targets Using Time-Reversal, Joseph Michael Faia
Graduate Theses - Electrical and Computer Engineering
Ultra-wide band radar is a growing interest for the enhanced capability of ranging, imaging, and multipath propagation. An ultra-wide band pulse imposed on a system provides a near impulse like response and is, therefore, more descriptive than a conventional monotonic pulse. Combining pulse inversion with ultra-wide band DORT (a French acronym for the decomposition of the time reversal operator) is a technique which could be used to for greater visibility of nonlinear targets via harmonic detection in the presence of larger linear scatterers. Energy can be selectively focused onto nonlinear scatterers in complex, inhomogeneous environments. This thesis1, will expand upon …
Long-Range Indoor Emitter Localization From 433mhz And 2.4ghz Wlan Received Signal Strengths, Hang Du
Long-Range Indoor Emitter Localization From 433mhz And 2.4ghz Wlan Received Signal Strengths, Hang Du
Graduate Theses - Electrical and Computer Engineering
An improved search method for localizing a radio emitter in a building from its signal strength is proposed and implemented. It starts from floor level determination, which samples the signal strength on each floor and determines the floor level of the emitter. Then the search is conducted iteratively on a specific floor. For each round of search, one-dimensional (1-D) or two-dimensional (2-D) signal strength is collected according to the actual structure of the floor. The signal strength data are processed to fit a 1-D curve or a 2-D surface with regression models to establish an indicator or trend, which can …
New Broadband Common-Mode Filtering Structures Embedded In Differential Coplanar Waveguides For Dc To 40 Ghz Signal Transmission, Yujie He
Graduate Theses - Electrical and Computer Engineering
Coplanar waveguides (CPWs) provide effective transmission with low dispersion into the millimeter-wave frequencies. For high-speed signaling, differential transmission lines display an enhanced immunity to outside interference and are less likely to interfere with other signals, when compared to single-ended transmission lines. Common-mode (CM) conversion from the differential-mode (DM) signal energy can produce unintentional radiation as well as degraded board-level electromagnetic compatibility (EMC) and signal integrity SI environments. Due to the negative effects of CM signals, filtering structures are often used to suppress the propagation of these signals. The filtering structures introduced in this project all implement the same CM filter …
Differential Launch Structures And Common Mode Filters For Planar Transmission Lines, Zachary Thomas Bergstedt
Differential Launch Structures And Common Mode Filters For Planar Transmission Lines, Zachary Thomas Bergstedt
Graduate Theses - Electrical and Computer Engineering
Increases in signal speeds and decreases in dimensions pose increasing threats to signal integrity (SI) and electromagnetic compatibility (EMC) in differential interconnects due to the enhanced risk of common mode (CM) conversion. This thesis examines CM filtering solutions for multiple transmission topologies that mitigate CM noise, reducing the threat to SI and EMC. These topologies include microstrip and stripline, which are the most commonly used transmission line architecture in printed circuit boards (PCB), and broadside coupled coplanar waveguides (BC-CPW). Stripline and BC-CPW transmission lines have lower dispersion and attenuation than the commonly used microstrip but have added complexity in introducing …
Neurosim: Naturally Extensible, Unique Risc Operation Simulator, David Eric Mcneil
Neurosim: Naturally Extensible, Unique Risc Operation Simulator, David Eric Mcneil
Graduate Theses - Electrical and Computer Engineering
The NEUROSim framework consists of a compiler, assembler, and cycle-accurate processor simulator to facilitate computer architecture research. This framework provides a core instruction set common to many applications and a simulated datapath capable of executing these instructions. However, the core contribution of NEUROSim is its exible and extensible design allowing for the addition of instructions and architecture changes which target aspecic application. The NEUROSim framework is presented through the analysis of many system design decisions including execution forwarding, control change detection, FPU configuration, loop unrolling, recursive functions, self modifying code, branch predictors, and cache architectures. To demonstrate its exible nature, …
Modular Design Of An Educational Robotics Platform, Zhen Wei
Modular Design Of An Educational Robotics Platform, Zhen Wei
Graduate Theses - Electrical and Computer Engineering
The goal of this thesis is to design a modular educational robotics platform to improve the limitation of current educational robotics platforms, such as limited pins, single programming language, and single programming device. This platform uses an SPI bus for modularity and to solve the problem of limited pins on current educational robot platforms. A Raspberry Pi, which runs a 32bit Embedded Linux System, has been used to build the central control for this educational robotics platform to enable it to use different programming languages and to be programmed by different devices. The modules and libraries for stepper motors and …
A Heart Rate Finger Ring And Its Smartphone App Through Customized Nfc, Yang Liu
A Heart Rate Finger Ring And Its Smartphone App Through Customized Nfc, Yang Liu
Graduate Theses - Electrical and Computer Engineering
Population aging has become one of the most critical problems in contemporary society. Families and organizations are striving to provide better healthcare to the elderly and handicapped for their better living conditions. Due to these situations, the demand for remote health monitoring continues to grow rapidly. With the development of new technologies, such as smaller sensors and microcontrollers, the increasing widespread use of smartphones, and new wireless communication methods, a wireless body area network system can be constructed to provide more sophisticated solutions to satisfy this demand. The objective of this thesis is to demonstrate that such a system is …
Development And Verification Of Multi-Level Sub-Meshing Techniques Of Peec To Model High-Speed Power And Ground Plane-Pairs Of Pfbs, Leihao Wei
Graduate Theses - Electrical and Computer Engineering
No abstract provided.
Implementing An Integrated Signaling And Power Distribution Control System For Remotely Located Devices, Andrew Stephen Hintz
Implementing An Integrated Signaling And Power Distribution Control System For Remotely Located Devices, Andrew Stephen Hintz
Graduate Theses - Electrical and Computer Engineering
A system was designed and implemented that combined the distribution of high-current power with a digital control signal over a common conductor. Two different versions of this system were implemented. Initially, a design based on of commercially available parts was created and tested to prove that the concept of combining communications and power is valid. The resulting design was then miniaturized to show that the system might be combined onto a single integrated circuit. In the miniaturization process, some circuit blocks were redesigned to take advantage of the flexibility provided by ASIC designs. Both the proof of concept and the …
A Translation And Rotation Independent Fingerprint Identification Approach, Hongyu Wang
A Translation And Rotation Independent Fingerprint Identification Approach, Hongyu Wang
Graduate Theses - Electrical and Computer Engineering
This thesis describes a new approach for fingerprint identification that will be shift and rotation independent. Detailed descriptions of directional filtering, foreground and background segmentation, feature extraction, and matching based on structural correlation are the main topics of this thesis. The fingerprint identification system consists of image preprocessing, feature extraction, and matching which run on a PC platform. The preprocessing step includes histogram equalization, block-based directional filtering, thinning, and adaptive thresholding to enhance the original images for successful feature extraction. The features extracted will be stored in the database for matching. The matching algorithm presented is a modification and improvement …
Digital Model Of A Generic Infrared Tracker, James Michael Brown
Digital Model Of A Generic Infrared Tracker, James Michael Brown
Graduate Theses - Electrical and Computer Engineering
Personal computer based simulations are popular because of the wide availability of personal computers. In this thesis, a simple simulation model of a generic infrared tracker is developed for the personal computer. This thesis first centers on the definition of a generic infrared tracker and the development of a tracker model. The remainder of this thesis is a description of the personal computer based computer simulation model, and a discussion of results of simulation runs to characterize the tracker model response. The conclusion of this thesis is that the simple simulation model serves both as a prototype for developing a …