1. Department of Information Display, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
2. Nopalu Institute of Science and Technology, 72 Nord Foire Azur, Dakar BP 29044, Senegal
3. Graduate School of International and Area Studies, Hankuk University of Foreign Studies, 107 Imun-ro, Dongdaemun-gu, Seoul 02450, Republic of Korea