Nanjing University of Aeronautics and Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing University of Aeronautics and Astronautics, Qinghai University, affiliation not provided to SSRN, Nanjing University of Aeronautics and Astronautics, Nanjing University of Aeronautics and Astronautics and Nanjing University of Aeronautics and Astronautics