1. School of Mathematical SciencesPeking University Beijing China
2. Faculty of Engineering and Computer ScienceNational University of Modern Languages Islamabad Pakistan
3. Department of Computer Science, Faculty of Computing and Information TechnologyUniversity of Gujrat Gujrat Pakistan
4. Department of Computer ScienceCOMSATS University Islamabad, Wah Campus Wah Cantonment Pakistan
5. School of Information and Safety EngineeringZhongnan University of Economics and Law Wuhan China