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Some of the material in is restricted to members of the community. By logging in, you may be able to gain additional access to certain collections or items. If you have questions about access or logging in, please use the form on the Contact Page.
The demand for high-voltage and high-power power electronics devices, especially for the next generation electrical ship system, has increased rapidly these years. The three-phase three-level neutral point clamped (NPC) rectifier...
A proposed alternative wireless communication technique is developed and compared to the current radio frequency command link in a Flight Termination System. The command link in a Flight Termination System requires a reliable signal in a...
A technique for the analysis of random dopant-induced effects in semiconductor devices is presented. It is based on the ''small signal analysis'' ~perturbation! technique. It is computationally much more efficient than the existing...
Swarm behavior indicates the direct or indirect interactions among relatively simple agents to perform a particular task that is unknown to the individual agent. The study of swarm behavior originates from the research of swarms in...
Recent increased popularity in plug-in hybrid electric vehicles (PHEVs) has been influenced by their ability to relieve the economic dependence on oil, meanwhile reducing the carbon footprint through the decreased level of harmful...
The along-track resolution of a sonar system is proportional to the aperture length in the along-track direction. Synthetic aperture sonar (SAS) coherently sum samples from multiple physical locations to form a synthesized aperture which...
In this research, two important concepts concerning parallel robots are investigated: compliance and fault tolerance. First, we address the issue of synthesizing a suitable compliance. This is an important problem since a well-designed...
In order to image or map targets on an ocean floor, a synthetic aperture sonar platform is moved underwater over the ocean floor. The platform pings or transmits acoustic signals, which reflect off the target back to the receiver. A...
In this thesis, an approach is proposed for the design and implementation of fuzzy traffic controllers using Field Programmable Gate Arrays (FPGAs).The focus of this study is to develop an effective traffic signaling strategy to be...
Superconducting magnet systems are the enabling technology for several research fields, e.g., experimental high-energy physics and fusion. Advanced superconducting magnet systems are strongly needed to achieve ever-higher beam energy in...
Many pattern recognition tasks employ artificial neural networks based on radial basis functions. The statistical characteristics of pattern generating processes are determined by neural networks. The Gaussian potential function is the...
The demand for high-speed mobile wireless communications is rapidly growing. MIMO technology promises to be a key technique for achieving the high date capacity and spectral efficiency for wireless communication systems of the near...
Although many attempts have been made to construct an economically feasible Fault Current Limiter (FCL), no FCL has yet been widely accepted by the power industry. This thesis presents a novel fault current limiter for power system...
Systems with critical functionality and are prone to damage due to excessive stress level from operation conditions and working environment requires health monitoring. Condition or health monitoring involves acquiring data that can be...
The emerging emphasis and benefits of distributed generation on smaller scale networks has prompted much attention and focus to research in this field. Much of the research that has grown in distributed generation has also stimulated the...
Individual tin dioxide nanobelts were used to fabricate field-effect transistor (FET) devices. The output characteristics of these devices have been measured under various surrounding atmospheres and temperatures, and modeled with a...
The paint and coatings industry is constantly working to improve their product, making a more efficient product at a cheaper cost. This requires some research and learning on the part of the companies, particularly in optical studies....
Response surface methodology is used to study the effectiveness of different grounding schemes implemented for the mitigation of a single-line-to-ground fault in a medium voltage DC (MVDC) power system. Multivariate adaptive regression...
Image compression addresses the problem of reducing the amount of data required to represent a digital image. The basis of the reduction process is the removal of redundant data without affecting the quality of the image. This can be...
LiFePO4 batteries have been in existence since 1997 through the work of Padhi et al and showed promise early on due to its material abundance, low cost, low environmental impact, high temperature tolerance and theoretical capacity of...
Nuclear magnetic resonance (NMR) is an important tool used to study the atomic or molecular properties of nuclei by exploiting its magnetic properties. A spectrometer is an integral element of an NMR system which consists of a RF...
A robust and computationally efficient Monte-Carlo based technique is developed to analyze the magnetic aftereffect and noise passage phenomena in magnetic hysteretic systems by using phenomenological models of hysteresis. The technique...
Momentum based motion planning allows small and lightweight manipulators to lift loads that exceed their rated load capacity. One such planner, Sampling Based Model Predictive Optimization (SBMPO) developed at the Center for Intelligent...
Nowadays, relatively small-scale distributed generation (DG) technologies are developing rapidly in an effort to both protect the environment and to address the bottleneck of centralized power systems. DG tends to utilize diverse...
Image segmentation is one of the most important categories of image processing. The purpose of image segmentation is to divide an original image into homogeneous regions. It can be applied as a pre-processing stage for other image...
This thesis presents and evaluates a bio-inspired vision system design to increase the depth field of a stereoscopic ranging imager. Two key attributes of the human vision system are leveraged in this design. The first attribute is image...
Filtering is an important aspect of the modern power system. By reducing the effects of harmonics, power transmission and utilization becomes more efficient. This research examines the use of neural networks for the estimation and...
The increasing consumer demand and government incentives are driving the rapid growth of renewable energy generation. In particularly, the number of distributed photovoltaic (PV) system installations is increasing quickly. However, the...
In order to better study how to improve the accuracy of texture recognition in image processing, we will study the concept of information entropy, which characterizes the uncertainty of the information source. Since the information...
Bridges in Florida are exposed to high amounts of humidity due to the state's geography. This excess moisture results in a high incidence of corrosion on the bridge's steel support cables. Also, the inclusion of ineffective waterproofing...
The prediction of any aspect of the future has always fascinated mankind because of the possible benefits of this knowledge, especially financial benefits. From year to year, many stockholders would like to be able to know if the price...
Gas turbine-synchronous generator (GT-SG) systems are the main source of power and propulsion onboard most naval ships. Since this system plays a vital role in accomplishing the ship's mission, a lot of testing is conducted to ensure...
Filtering data in real-time requires dedicated hardware to meet demanding time requirements. If the statistics of the signal are not known, then adaptive filtering algorithms can be implemented to estimate the signals statistics...
Switching-mode single-phase DC-AC converters have been widely used in critical applications such as uninterrupted power supply systems and AC motor drivers. Among various control techniques, Pulse Width Modulation (PWM) technique is the...
The aim of the thesis is to include a Field Programmable Gate Array (FPGA) based electromagnetic transient simulation into a Real-time Digital Simulator (RTDS) power system simulation. This will enable the simulation of high-frequency...
Large-scale storage arrays are always in high demand by universities, government agencies, web search engines, and research laboratories. This unvarying need for more data storage has begun to push storage array magnitudes into an...
Implementation of digital filters in Field Programmable Gate Arrays (FPGAs) requires many multipliers, which is directly related to the implementation cost. This research is devoted towards efficient implementation of digital filters in...
Thus far, capacity fade has been ascribed to various mechanisms that include (i) the dissolution of highly resistive surface films on the electrode surface which result from side reactions; (ii) loss in active electrode materials; (iii)...
Noctiluca Miliaris is a single cell, multi-membrane organism that has bioluminescent capabilities. This luminescent ability is closely associated with the flash triggering potential produced by an excitable membrane under active...
The stochastic nature of ion implantation and diffusion processes induces variations of random doping concentration, which result in the fluctuations of the intrinsic parameters of semiconductor devices. The fluctuations of intrinsic...
Motion control of robot manipulators is typically accomplished by sensing and regulating the positions of the joint actuators to cause the end-effector to follow a programmed trajectory. Unfortunately, position control schemes usually...
Detection and estimation of frequencies in composite signal is a very important topic. The resolution issue is the most fundamental. The higher the resolution, the more precise information we can get from the signal. The traditional...
Demand for decentralized, wireless, ad-hoc systems, where hosts are free to leave or join, to replace wired communication systems has seen a phenomenal growth. Such networks need little or no infrastructure support to operate. Deploying...
Digital signal processing (DSP) algorithms for estimating target range and backscatter intensity from sampled laser detection and ranging (LADAR) systems are limited by the sampling rate of data collected and computation time...
The microstructure of the catalyst layer in proton exchange membrane fuel cells (PEMFCs) greatly influences the utilization of the catalyst (Pt) and the overall cell performance. Research focused on two key components in optimizing the...
In this work, Side-Channel Attacks (SCAs) are considered as a security metric for the implementation of hybrid cryptosystems utilizing the neural network-based Tree Parity Re-keying Machines (TPM). A virtual study is presented within the...
In recent years there has been an explosive growth in the number of wireless users, particularly in the area of mobile communication. In future, wireless mobile systems will be more sophisticated and more widespread. This growth has...
Shapes of boundaries can play an important role in characterizing objects in images. Shape analysis involves choosing mathematical representations of shapes, deriving tools for quantifying shape differences, and characterizing imaged...
An analytical impedance model and a small-signal equivalent circuit are derived for the impedance spectra of Li-air batteries with porous cathodes. The model takes into consideration the effects of the oxygen diffusion, double layer, and...
In this thesis, three different RF coils were investigated for their application in Magnetic Resonance Imaging (MRI). We developed transmit/receive birdcage volume coils since they provide better B1 field homogeneity than other coils....
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