Department;
of;
Hospital;
and;
Health;
Care;
Administration,;
Chia;
Nan;
University;
of;
Pharmacy;
&;
Science,;
Tainan;
71710,;
Taiwan;
General;
Education;
Center,;
Chia;
Nan;
University;
of;
Pharmacy;
&;
Science,;
Tainan;
71710,;
Taiwan;
不对称; 波动性; 股市; 日本; 香港; GARCH模型; DCC; 证据;