[Deng, Xianjun; Jiang, Yalan] Univ South China, Sch Elect Engn, Hunan Prov Key Lab Ultrafast Micro Nano Technol &, Hengyang 421001, Peoples R China.
[Yang, Laurence T.; Yi, Lingzhi] St Francis Xavier Univ, Dept Comp Sci, Antigonish, NS B2G 2W5, Canada.
[Yi, Lingzhi] Univ South China, Sch Civil Engn, Hengyang 421001, Peoples R China.
[Chen, Jiaoyan] Nanchang Univ, Sch Informat Engn, Nanchang 330031, Jiangxi, Peoples R China.
[Liu, Yong; Li, Xiangyang] Univ South China, Sch Resource Environm & Safety Engn, Hunan Prov Engn Res Ctr Radioact Control Technol, Hengyang 421001, Peoples R China.