I am a multi-disciplinary dynamicist interested in the understanding, modeling, and control of natural and engineered systems. I am currently a visiting scholar in the Department of Astronomy and Center for Integrative Planetary Science at UC Berkeley. I received my Ph.D. degree in mechanical engineering from Sharif University of Technology in 1998 and was a post-doctoral fellow at Florida State University (2002-2004) where I worked with the late Prof. Christopher Hunter on various problems in complex fluids, kinetic theory and galactic dynamics. I have held faculty and research positions at Sharif University of Technology, Tehran, Institute for Advanced Study, Princeton, Institut d'Astrophysique de Paris, Institute for Advanced Studies in Basic Sciences, Zanjan, and Leiden Observatory in the Netherlands.