The present paper is concerned with a space-time homogenization problem for nonlinear diffusion equations periodically oscillating (in space and time) coefficients. Main results consist of theorem (i.e., convergence solutions as the period oscillation goes to zero) well characterization homogenized equations. In particular, matrices are described in terms cell-problems, which have different for...

many real time processes have complex, uncertain and nonlinear dynamics. boilers are nonlinear, time varying, multi-input multi-output (mimo) systems, whose states generally vary with operating conditions. the major problem in controlling that system is that its drum water pressure and steam flow dynamics include an integrator that results a critically stable behavior. conventional controller p...