Similar to the Essay/Paper Contest idea, but for dissertations that would be related to our profile/mission/interests, however we define them. Could be used in place of or as an addition to the other. Several NGOs do that.

Commemorating the Anniversary of Professor Van Holk’s Caragous Stance
On its 83rd anniversary, we remember Professor L. van Holk’s (1893-1982) historic protest speech against the persecution of Jews at Leiden University. The International Association