A system for controlling, in a multi-resource communication network, the delivery of services by at least one resource capable of simultaneously delivering, within a maximum joint service capacity, at least one first type of service to a first set of users and a second type of service to a second set of users. The invention also relates to processes for the preparation of such compositions. In this way, operating specifications of a semiconductor device at worst case temperatures may be met without compromising performance at normal operating temperatures.