Submitted on: 25 March 1999.
Revised on: 04 May 1999.
Accepted on: 28 May 1999.
___________________ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
Submitted on: 27 July 2000.
Revised on: 05 September 2000.
Accepted on: 02 October 2000.
___________________ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
http://reply.papertrans.cn/1/85/8442/8442-33.png
http://reply.papertrans.cn/1/85/8442/8442-34.png
http://reply.papertrans.cn/1/85/8442/8442-35.png
http://reply.papertrans.cn/1/85/8442/8442-36.png