http://reply.papertrans.cn/1/8/739/739-21.png
http://reply.papertrans.cn/1/8/739/739-22.png
http://reply.papertrans.cn/1/8/739/739-23.png
http://reply.papertrans.cn/1/8/739/739-24.png
http://reply.papertrans.cn/1/8/739/739-25.png
Submitted on: 02 April 2009.
Revised on: 09 July 2009.
Accepted on: 23 July 2009.
___________________ADVANCES IN ENGINEERING SOFTWARE
http://reply.papertrans.cn/1/8/739/739-27.png
http://reply.papertrans.cn/1/8/739/739-28.png
Submitted on: 14 June 1999.
Revised on: 01 October 1999.
Accepted on: 08 November 1999.
___________________ADVANCES IN ENGINEERING SOFTWARE
Submitted on: 12 June 2002.
Revised on: 31 July 2002.
Accepted on: 30 August 2002.
___________________ADVANCES IN ENGINEERING SOFTWARE