This paper deals with a duopoly model in a situation where technological breakthroughs are possible. The innovation process is described as a continuous-time Markov chain with jump depending on level of R&D capital accumulated through investment by each firm. When a firm is the first to have...

The theory of systems is presented as an operational theory that can be used to modelize the structure of technical or social systems. Simulation and optimalization techniques can be used to operate this model on a computer for analyzing different scenarios. A recent study of the economy of...

This paper deals with the problem of adjusting the supply of public services to the demand for such services. In this matter, the planner is faced with a population having a stochastic behavior and he has to solve ticklish resource allocation problems. After presenting a general frame of...

In this paper one proposes a methodological framework for the study of information and decision structures in hospital management. With a particular reference to the control of nursing care demand and supply, various information and decision schemes are considered.