“…The optimal control of a nuclear reactor which is governed by a linear parabolic PDE has been studied by Chandhuri [1972] The "optimum" location of the controllers for a parabolic DPS was deduced by Z, Martin [1978] by minimizing a quadratic cost functional. Amouroux and Babary [1978) determined the best pointwise location of actuators for a parabolic DPS by minimizing an energy criterion.…”