1. a Graduate Institute of Finance, Economics, and Business Decision, National Kaohsiung University of Applied Sciences , Kaohsiung City, Taiwan
2. b Department of Banking and Finance , National Chiayi University , Chiayi City, Taiwan
3. c Hontai Life Insurance Co., Ltd. , 4th Fl.,156, Minsheng E. Rd. Sec.3, Taipei 110, Taiwan