[1] Chung Ang Univ, Coll Business & Econ, Sch Business Adm, Seoul, South Korea
[2] Calif State Univ, Dept Accounting Finance & Econ, Dominguez Hills, Carson, CA USA
[3] Baekseok Univ, Div Adv IT, Cheonan, South Korea
[4] Chung Ang Univ, Coll Business & Econ, Sch Business Adm, 84 Heukseok ro, Seoul 06974, South Korea