Presents developments and advances in modelling passive and active control systems governed by partial differential equations. This book emphasizes shape analysis, optimal shape design, controllability, nonlinear boundary control, and stabilization. > This volume presents developments and advances in modelling passive and active control systems governed by partial differential equations. It emphasizes shape analysis, optimal shape design, controllability, nonlinear boundary control, and stabilization. The authors include essential data on exact boundary controllability of thermoelastic plates with variable transmission coefficients. > Boundary variations in the Navier-Stokes equations and Langrangian functionals; shape sensitivity analysis in the Maxwell's equations; tangential calculus and shape derivatives; slope stability and shape optimization - numerical aspects; parallel solution of contact problems; Eulerian derivative for noncylindrical functionals; simultaneous exact/a)