[Luo, Ping;Wu, Fang-Xiang] Univ Saskatchewan, Div Biomed Engn, Sakatoon, SK, Canada.^[Tian, Li-Ping] Beijing Wuzi Univ, Sch Informat, Beijing, Peoples R China.^[Chen, Bolin] Northwestern Polytech Univ, Sch Comp Sci & Technol, Xian, Shaanxi, Peoples R China.^[Xiao, Qianghua] Univ South China, Sch Math & Phys, Hengyang, Peoples R China.^[Wu, Fang-Xiang] Nankai Univ, Sch Math Sci, Tianjin, Peoples R China.^[Wu, Fang-Xiang] Univ Saskatchewan, Dept Mech Engn, Saskatoon, SK, Canada.