Funding for this research was provided by:
the National Natural Science Funds of China (51509056)
the Postdoctoral Science Foundation of China (2015M571394)
the Heilongjiang Postdoctoral Fund (LBH-Z14059)
the Fundamental Research Funds for the Central Universities (HEUCF150108)
the Ministry of Science and Technology Project of Western Transportation Construction of Ministry of Communications (2014364554050)
Ministry of Science and Technology, Taiwan (TW) (MOST 104-2410-H-161-002)