World Scientific and Engineering Academy and Society (WSEAS) Posted on September 22, 2011 by Men Yali Copyright Holders: World Scientific and Engineering Academy and Society (WSEAS) Self-archiving policy Conditions Accepted version: √ Published version: √ Remarks: Self-archiving policy not found in publisher’s website, self-archiving policy in Sherpa Romeo is followed: Publisher’s version/PDF may be used Publisher copyright and source must be acknowledged (This information is derived from the RoMEO database which is compiled by SHERPA and has been modified for use here.) Verification Date: 22.11.2011