1. Department of Business Administration, Dongguk University, Gyeongju, Republic of Korea
2. College of Liberal Arts and Convergence Science, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
3. College of Liberal Arts and Convergence Science, Korea Advanced Institute of Science and Technology (KAIST), Daejeon; Daejeon Technopark, Daejeon, Republic of Korea