Submitted on: 18 October 1999.
Revised on: 03 January 2000.
Accepted on: 19 February 2000.
___________________JOURNAL OF SUPERCOMPUTING---SPRINGER
http://reply.papertrans.cn/2/195/19461/19461-22.png
Submitted on: 25 August 2003.
Revised on: 12 December 2003.
Accepted on: 26 December 2003.
___________________JOURNAL OF SUPERCOMPUTING---SPRINGER
http://reply.papertrans.cn/2/195/19461/19461-24.png
http://reply.papertrans.cn/2/195/19461/19461-25.png
http://reply.papertrans.cn/2/195/19461/19461-26.png
http://reply.papertrans.cn/2/195/19461/19461-27.png
Submitted on: 21 July 2011.
Revised on: 14 October 2011.
Accepted on: 13 November 2011.
___________________JOURNAL OF SUPERCOMPUTING---SPRINGER
http://reply.papertrans.cn/2/195/19461/19461-29.png
Submitted on: 16 May 2000.
Revised on: 17 July 2000.
Accepted on: 01 August 2000.
___________________JOURNAL OF SUPERCOMPUTING---SPRINGER