Warren Michael Lam.Alos issued as Thesis (Ph. D.)--Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science, 1997.Includes bibliographical references (p. 168-179).Supported by an associated AASERT monitored by the U.S. Army Research Office. DAAH4-95-1-0473 Supported in part by the Defense Advanced Research Projects Agency. monitored by the Dept. of the Navy, Office of Naval Research. N00014-93-1-0686, N00014-96-1-0930 Supported in part the U.S. Air Force Office of Scientific Research. F49620-96-1-0072