System functioning efficiency and other system operational properties: research problems, evaluation method

The short historical sketch of researches of efficiency of systems functioning purposeful processes is given in this paper. The review of some relevant research problems of the operational properties solved abroad is provided.
On the basis of the analysis of features of efficiency research of systems functioning purposeful processes, as well as research of other operational properties, such as effectiveness, performance, operational and dynamic capabilities by domestic and foreign authors, the conclusion is drawn on relevance of the solution of some modern research problems on the basis of analytical estimation of operational properties indicators. A number of new systems and processes of their functioning operational properties researches directions is given. Among them, there are system capability (potentiality) and information technologies capability. Features of agile (dynamical, improved due to environment impact) systems and processes of their functioning, a role of information technologies are considered during functioning of such agile systems.
Main features of systems improvement and details of transition processes of such systems functioning improvement are described. The role of information technologies for systems improvement is discussed. The obtained results allowed to conduct research of operational properties of the improved systems, research of information technologies usage during system functioning. Examples of models of the improved system functioning effects formation are offered. Such models are developed taking into account the realization of information and non-information actions during the improved system functioning.
For the unified estimation of indicators of operational properties the method of analytical estimation of operational properties is offered. This method is based on the sequence of operational properties estimation schemes use. The sequence of the three schemes of operational properties estimation, which allows to estimate all described operational properties. Features of estimation of systems operational properties using the offered estimation method are revealed. The obtained results should allow to proceed to the solution of research problems of systems operational properties based on mathematical models use. An example of operational properties of information technology use indicators calculation is provided.