Alexander F. Vakakis is an associate professor in the Department of Mechanical and Industrial Engineering of the University of Illinois at Urbana-Champaign. His research interests include linear and nonlinear dynamics and vibrations, modal analysis, structural wave propagation, and bioengineering. He is an NSF Young Investigator Award recipient (1994), and his research is supported by federal and industrial grants. He received his PhD from the California Institute of Technology in 1990. Leonid I. Manevitch is a professor in the Institute of Chemical Physics at the Russian Academy of Scien...