1. Graduate School of Logistics, Inha University, Yonghyeon-dong, Nam-gu, Incheon, South Korea.
2. Department of Logistics and Shipping Management, Kainan University, No. 1 Kainan Road, Luzhu, Taoyuan County 33857, Taiwan.
3. Port Demand Research Center, Korea Maritime Institute, Sangam-dong, Mapo-gu, Seoul, South Korea.