Review on nonlinear dynamic systems involving time delays

From the viewpoint of dynamics, this review outlines the recent advances in the studyof nonlinear dynamic systems involving time delays, an important class of dynamic systems invarious engineering fields. The survey is made in three aspects as follows: the dynamic features,available approaches and advances in research on most attractive problems. The evolution of adelayed system depends not only on the current state of the system, but also on previous ones.Hence, a delayed dynamic system should be modeled b...