1. A computer system for enhancing the performance of underlying policies and execution-rules of real-world activities, comprising: a demand input section configured to provide demand information to drive the system; a real-time software application configured to process a series of discrete steps in real-time and being configured to implement the underlying policies and execution-rules of the real-world activities and to convert the demand information into instructions; an operations-simulation model configured to emulate the real-time software application and to implement the underlying policies and execution-rules of the activities in simulation time and which receives the instructions; a control section configured to integrate the real-time software application with the operations-simulation model to produce a unified output in simulation time, the control section comprising a synchronization clock configured to synchronize the real-time discrete steps of the real-time software application with the simulation time of the operations-simulation model by advancing to the execution of selected discrete steps emulate, by the operations-simulation model, the implementation by the real-time software application of the underlying policies and execution-rules of the real-world activities in the simulation time by delaying the execution of the selected discrete steps in the simulation time, and to communicate the instructions from the real-time software application to the operations-simulation model; and an output section configured to output the unified output, wherein said simulation time is faster than the processing time of the real-time software application.