Garkusha O. Models and methods of user's competencies diagnosing to provide operational availability of computer systems

The thesis is devoted to the up-to-date topic connected with development of methods and models of diagnostic experiment arrangement in order to estimate computer system users' competencies to increase workability and operational availability of human-machine systems. A diagnostic experiment results estimation model based on fuzzy logic rules and procedures was first introduced in the work; it gives an opportunity to formalize procedures of expert analysis of complete-answer open-form qualification tests. A partly-adapted diagnostic session formation model at competencies analysis diagnostic experiment was for the first time introduced; the model is based on a 3D competencies model and allows forming a diagnostic session with maximal checked material coverage at minimal number of qualification tests. Correction and scaling diagnostic experiment primary results methods at total estimation were improved; these methods in contrary to the existing ones do not depend on estimation ways and ranges of qualification tests, and give an opportunity to get total estimation in a free scale. The further development was given to the 3D model of computer system users' ICT-competencies, which unlike the existing ones takes into account material covering by an individual test; it allows forming a database with qualification tests that cover checked material at most. The further development was provided to models and methods of qualification tests quality and reliability, which unlike the others consider partly-correct answers; it allows decreasing the depth of qualification tests quality and reliability analysis based on their usage results in diagnostic experiments.