1. South University,School of Automation Central,Changsha,China
2. Changsha Preschool Education College,School of Preschool Education,Changsha,China
3. Central South University,School of Computer Science and Engineering,Changsha,China
4. Central South University,School of Electronic Information,Changsha,China
5. Changsha University,School of Electronic Information and Electrical Engineering,Changsha,China