In the new deregulated electric power market, energy transactions are generally processed in terms of hourly energy delivery. Failing to fulfill energy delivery obligation may result in penaltalt to energy tiesprodp. This paper studies the relationship between generation level schedule, energy delivery schedule and physical ramp-rate of a generating unit. It is shown that although ramp-rate con...

Information spreading in a population can be modeled as an epidemic. Campaigners (e.g. election campaign managers, companies marketing products or movies) are interested in spreading a message by a given deadline, using limited resources. In this paper, we formulate the above situation as an optimal control problem and the solution (using Pontryagin’s Maximum Principle) prescribes an optimal re...

The paper studies the solution stability of a parametric control problem governed by semilinear elliptic equations with mixed state-control constraint, where objective function is nonconvex and admissible set unbounded. We show that under certain conditions, upper semicontinuous continuous respect to parameters.

We consider a Markovian l-unit system which is subject to shocks causing it to deteriorate in each of its stochastically dependent components. The net reward produced by the system is assumed to be an l-dimensional function of the amounts of deterioration of the components. After every shock the controller has the option to replace the system by a new one. The objective is to maximize the long-...