1. School of Aerospace Engineering, Xiamen University, 422, South Siming Road, 361005, Xiamen, P. R. China
2. Department of Physics, Logistics Engineering University, Chongqing, 401331, P. R. China
3. School of Mechanical Engineering, Pusan National University, 10511, San 30, Jangjeon-Dong, Geumjeong-gu, 609-735, Busan, South Korea