  The stabilizability of a general class of abstract parabolic-like equations
is investigated, with a finite number of actuators. This class includes the
case of actuators given as delta distributions located at given points in the
spatial domain of concrete parabolic equations. A stabilizing feedback control
operator is constructed and given in explicit form. Then, an associated optimal
control is considered and the corresponding Riccati feedback is investigated.
Results of simulations are presented showing the stabilizing performance of
both explicit and Riccati feedbacks.
