- Professor, Department of Convention & Exhibition Management, Coll. of Hotel & Tourism Management (since 2004)............ - President, Korea Academy of Trade Fair & Exhibition Studies (since 2021)............. - Chairman, Trade Fair Institute (since 2021).......... - Director, Center of Kyung Hee Business Incubator (since 2020)............ - Outside Director, KINTEX (Korea International Exhibition Center) (since 2019)............ - Editor-in-chief, Koreanische Zeitschrift fuer Wirtschaftswissenschaften (since 2014)............ - Editor-in-chief, International Journal of Trade Fair & Exhibition Studies (2008 - 2020).