Kovalenko A. Methods and models of technical diagnostics of the integrated information systems

This dissertation is devoted to development of methods and models of integrated information systems' technical diagnostics. The model of integrated information system's technical diagnostics based on the hierarchical structure of the functional subsystems was developed. The implementation of this technical diagnostics system is prompted to be in a form of an expert system that allows the parallelization of technical diagnostics problem solving of the integrated information system. The method of constructing an information systems' technical diagnostics system was improved through the use of distributed databases with client-server architecture and use of modular expert system, using which allows to automate the technical state assesment of the integrated information system. The method of integrated information system's maintenance planning was developed, using which allows to verify the results of parameters measurement and technical diagnosis, and also to determine the range of activities on recovering the functionality of the integrated information system under conditions of resource constraints in automatic mode.