1. School of Computer Technology and Engineering & STIC-PSSWRE, Changchun Institute of Technology, Changchun, People's Republic of China
2. College of Computer Science and Technology, Jilin University, Changchun, People's Republic of China
3. Information Center, Jilin Communications Polytechnic, Changchun, People's Republic of China
4. School of Chemistry and Life Sciences, Changchun University of Technology, Changchun, People's Republic of China