Massachusetts Institute of Technology Department of Mechanical Engineering Room 5-207B, 77 Massachusetts Avenue Cambridge, MA 02139-4301 Tel: 617-324-5172 Fax: 617-324-3541 Email: pierrel at mit.edu Web page: http://web.mit.edu/pierrel/www/ Group Web: http://mseas.mit.edu/ Publications: http://mseas.mit.edu/publications