Henry Sy Successfully Defends Disseration Henry Sy, vice chairman of Toyota Motors - Shaw Boulevard, Successfully defended his dissertation entitled " " in partial fulfillment of the academic requirement for Doctor of Philosophy (Ph.D.) in Management granted by IAME. The panelists (from left) are: Dr. Dante V. Sy, Emmanuel T. Santos, Ph.D., chairman; Henry Sy, Dr. Nerza A. Rebustes, and Dr. Ped Salvador.