America - Gordon-Conwell Theology Seminary - George Fox University - California State University Fullerton

1989. 10. 06

2002. 07. 29

2012. 07. 09
Canada - University of Winnipeg

2013. 04. 04
Japan - Japan Lutheran College - Kyushu Lutheran College - Tohoku Gakuin University - Osaka Sangyo University - Tokyo Keizai University - Matsuyama University

1983. 07. 04

1998. 04. 06

1998. 05. 28

2002. 04. 12

2005. 01. 14

2006. 04. 28
China - Qufu Teacher's University - Shenyang Teacher's University - Beijing Materials Institute - Zaozhuang University - Renmin University of China - HUBEI University - Ludong University - University of Jinan - Xinjiang University - Qilu Normal University - Xian University of Posts & Telecommunications - Shandong University of Science & Technology

1995. 11. 30

1996. 12. 31

2004. 08. 10

2007. 10. 08

2008. 06. 18

2009. 05. 14

2011. 07. 05

2011. 07. 07

2011. 07. 29

2012. 04. 10

2012. 05. 24

2012. 07. 11
Spain - UAB - University of Santiago De Compostela

2003. 11. 25

2012. 08. 23
Germany - Mainz University of Applied Sciences - Khune Logistics University

2002. 07. 09

2010. 03. 06
Russia - Far Eastern State Technical University - Nizhniy Novgorod State Glinka Conservatoire

2003. 07. 17

2009. 07. 14
Philippines - Central Philippine University

2004. 02. 11
Mexco - University of Colima

2004. 07. 06
Pakistan - University of Peshawar

2012. 01. 18