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  \bf {Acknowledgments}
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This work is funded by the STTC CAVE Project (ARO\# N61339-04-C-0072) at the Desert Research Institute.

First of all I would like to thank my committee for their help in getting me this far. 
I would like to personally thank my committee chair, Dr. Frederick C. Harris Jr., who has been a valued teacher and mentor throughout my entire college carrier.
I would also like to thank my other committee members, Dr. Sergiu Dascalu and Dr. Scott Bassett, who have both been instrumental throughout my graduate school experience.
I extend my thanks to all the help that I have received from my co-workers, especially Roger Hoang.
Finally, many thanks go out to all of my family and friends, who's undying support has helped me through the most difficult of times.
