From the Airport [Letiště Ruzyně]:

All buses that can be used to reach places of interest of symposium participant depart from the stop located at the 3rd platform from arrival hall.

Map of airport area

To get to the Institute, you have to use bus 191 and get off at Sídliště Petřiny stop (21-23 min). This bus is also useful to get to Komenský and Kajetánka halls of residence. In this case you do not get off at the institute, but continue using description of the way from the Institute.

To get to city centre, to Academy residence, or to Komenský hall of residence, you can use trolleybus 59 to its end station at Metro Veleslavín.