For those who are from Daejeon:
-Check the bus timetable (https://intercitybuse.tmoney.co.kr/main.do):
option 1
Departure: Yuseong (location): 10:25 AM, 11:32 AM, ...
Destination: Gunsan
*The ticket for going to Gunsan seems only available at the terminal, i.e. not reservable.
*It seems that you can book the ticket for coming back to Yuseong.
*You can take buses to get to the terminal, but taking a taxi is recommended.
option 2
Departure: Daejeon (location): 9:30 AM, 11:30 AM, ...
Destination: Gunsan
*You can book the tickets for both ways.
*You can take buses to get to the terminal, but taking a taxi is recommended.
-From the Gunsan bus terminal to the KNU campus:
Take a taxi (~7,000 won). And tell the driver "Please go to the Kunsan (national) university, Du-dream center " or show him/her
"군산대 두드림 센터로 가주세요".
-Seminar room in #308 on the third floor of Du-dream center.
map: https://goo.gl/maps/KpsGWdQc99dY4Mv98
For those who are from Incheon airport:
Check the webpage https://www.kunsan.ac.kr/en/index.kunsan?menuCd=DOM_000000404004000000