Author(s): |
Fangfang Xu, College of Information science and Technology, Shandong University of Science and Technology, Qingdao, China, 266510 Weihui Liu, College of Information science and Technology, Shandong University of Science and Technology, Qingdao, China, 266511 Gengfeng Zhu, College of Information science and Technology, Shandong University of Science and Technology, Qingdao, China, 266512 |