Pao-Yuan Chang, Deng-Jyi Chen** and Krishna M. Kavi++
Information Management Department
Ta Hwa Insitute of Technology
Hsinchu, Taiwan 307, R.O.C.
E-mail: pychang@im.thit.edu.tw
**Computer Science and Information Engineering Department
National Chiao Tung University
Hsinchu, Taiwan 300, R.O.C.
E-mail: djchen@csie.nctu.edu.tw
++Department of Electrical and Computer Engineering
University of Alabama in Huntsville
Huntsville, AL 35899, U.S.A.
E-mail: kavi@ebs330.eb.uah.edu