1. School of Communication and Information Engineering, Chongqing Univ. of Posts and Telecom.
2. School of Computer Science, Chongqing Univ. of Posts and Telecom.
3. School of Computer Science, Beijing Univ. of Posts and Telecom.
4. Information Science and Technology Department, The Pennsylvania State University Abington College
5. Global Information and Telecommunication Institute, Waseda University