This study is funded by grants from the National Natural Science Foundation of Hunan province (2018JJ2339, 2018JJ6122), Hunan Province Education Department Science and Research Project (16C1393, 16C1395), the 13th Five-Year Plan of Hunan Province Education Science (XJK17BGD070). I am profoundly grateful to my supervisor, professor Zhao, whose illuminating instruction and expert advice have guided me through every step of my writing of this thesis. They gave me lots of inspirations and encouragement.
National Natural Science Foundation of Hunan province, Grant/Award Number: (2018JJ6122, 2018JJ2339); Hunan Province Education Department Science and Research Project, Grant/Award Numbers: 16C1395, 16C1393; 13th Five‐Year Plan of Hunan Province Education Science, Grant/Award Number: XJK17BGD070
This study is funded by grants from the National Natural Science Foundation of Hunan province (2018JJ2339, 2018JJ6122), Hunan Province Education Department Science and Research Project (16C1393, 16C1395), the 13th Five‐Year Plan of Hunan Province Education Science (XJK17BGD070). I am profoundly grateful to my supervisor, professor Zhao, whose illuminating instruction and expert advice have guided me through every step of my writing of this thesis. They gave me lots of inspirations and encouragement.