Description
The study of chaos in the last 20 years had a tremendous impact on the foundations of the sciences and on engineering. Synchronization [Afraimovich, Verichev & Rabinovich, 1986; Pecora & Carroll, 1990] and control [Ott, Grebogy & Yorke, 1990] of chaos have recently aroused a great deal of interests in light of their potential applications in engineering.