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Now showing items 31-40 of 50
Novel Techniques for the Design and Characterization of Electromagnetic Devices with Application to Multilayer Structures and Waveguide Filters
(2008-09-09)
In this work, optimization methods are presented for the analysis of inverse and
design problems in electromagnetics. The current and future demands placed on design
engineers necessitate the hybridization of forward ...
Design, Testing, and Simulation of a Low-Cost, Light-Weight, Low-g IMU for the Navigation of an Indoor Blimp
(2008-09-09)
In this thesis we develop an IMU for the purpose of navigating an autonomous indoor blimp. Due to the unique system properties of an indoor blimp, the developed IMU is light-weight and is capable of measuring slow rotational ...
Cold Cathodes for Applications in Poor Vacuum and Low Pressure Gas Environments: Carbon Nanotubes Versus Zinc Oxide Nanoneedles
(2008-09-09)
Effects of gas pressure on the electron field emission (FE) properties of zinc oxide (ZnO) nanoneedles and carbon nanotubes (CNTs) were investigated. The FE properties for ZnO nanoneedles almost fully recovered after being ...
Efforts Towards the Design and Development of an Electromagnetic Induction Sensor Optimized for Detection and Discrimination of Unexploded Ordnance
(2008-09-09)
This thesis provides a detailed description of efforts towards the development of a time domain electromagnetic induction (EMI) system optimized for detection and discrimination of Unexploded Ordnance (UXO). A time domain ...
Practically Realizing Random Access Scan
(2008-09-09)
The number of clock cycles in a serial scan (SS) test is often prohibitive as the number of flip-flops (FF) increases. Besides, scan-in and scan-out sequences result in unwanted circuit activity. This increases the test ...
Perfomance Analysis of 802.11b Networks
(2008-09-09)
Wireless local area networks (WLANs), especially those incorporating the 802.11b standard, have experienced rapid evolution and unprecedented widespread deployment during the past few years. Increasing research led to the ...
Lattice-Reduction Aided Linear Equalization For Wireless Communications Over Fading Channels
(2008-09-09)
Modern wireless communications ask for high data rate, high transmission performance and low complexity. High data rate induces frequency-selective channels because of the relatively shorter symbol duration than the delay ...
Particle Swarm Optimization Applied to the Design of a Nonlinear Control
(2008-09-09)
A method of searching for a tuning of an input to state linearizing controller is
presented. The problem of ?nding the appropriate weights of the control law’s terms
is treated as an optimization problem. Given the highly ...
Numerical Modeling of Nasal Cavities and Air Flow Simulation
(2008-09-09)
Computational fluid dynamics (CFD) has many applications in biomedical engineering, such as simulating air dynamics in nasal cavities and lungs, blood flow in vessels, and blood flow in hearts. To perform CFD simulations, ...
Packaging of Silicon Carbide High Temperature, High Power Devices - Processes and Materials
(2008-09-09)
Silicon carbide (SiC) has unique electrical, thermal and physical properties compared to the Si and GaAs conventionally used in microelectronics as it can operate in the temperature range from 350ºC to 500ºC. However, there ...