Variational methods in mechanics and physical models -- Fluid flows in dielectric porous media -- The impact of a jet with two fluids on a porous wall -- Critical point methods in nonlinear eigenvalue problems with discontinuities -- Maximum principles for elliptic systems -- Exponential dichotomy of evolution operators in Banach spaces -- Asymptotic properties of solutions to evolution equations -- On some nonlinear elastic waves biperiodical or almost periodical in mechanics and extensions hyperbolic nonlinear partial differential equations -- The controllability of infinite dimensional and distributed parameter systems -- Singularities in boundary value problems and exact controllability of hyperbolic systems -- Exact controllability of a shallow shell model -- Inverse problem: Identification of a melting front in the 2D case -- Micro-local approach to the control for the plates equation -- Bounded solutions for controlled hyperbolic systems -- Controllability and turbulence -- The H? control problem -- The H? boundary control with state feedback; the hyperbolic case -- Remarks on the theory of robust control -- The dynamic programming method -- Optimality and characteristics of Hamilton-Jacobi-Bellman equations -- Verification theorems of dynamic programming type in optimal control -- Isaacsโ{128}{153} equations for value-functions of differential games -- Optimal control for robot manipulators -- Control theory and environmental problems: Slow fast models for management of renewable ressources -- On the Riccati equations of stochastic control -- Optimal control of nonlinear partial differential equations -- A boundary Pontryaginโ{128}{153}s principle for the optimal control of state-constrained elliptic systems -- Controllability properties for elliptic systems, the fictitious domain method and optimal shape design problems -- Optimal control for elliptic equation and applications -- Inverse problems for variational inequalities -- The variation of the drag with respect to the domain in Navier-Stokes flow, -- Mathematical programming and nonsmooth optimization -- Scalar minimax properties in vectorial optimization -- Least-norm regularization for weak two-level optimization problems -- Continuity of the value function with respect to the set of constraints -- On integral inequalities involving logconcave functions -- Numerical solution of free boundary problems in solids mechanics -- Authorsโ{128}{153} index