Prof Tim Poston is a amazing person. i have worked with him this summer on a text processing application.
You can simply call him a interdisciplinary scientist. He has expertise in the field of geometrical mathematics,dynamics of Shape expressing,brain imaging.
His current interests are - (www.textflow.com) an evolving document with multiple authors. structures
He resides in Bangalore at mathikere. He works at the NIAS.
he is a very fun loving and witty person. anyone interested can write to him for a summer project for next summer.
I bet you will love working with him. for contact ....simply Google his name