So the time has come to present the first PhD thesis in the specialty “126-Information systems and technologies” at our department. Today there was an extended meeting of the Department of IST, at which the scientific results of the PhD thesis of the 4th-year postgraduate student of the Department of IST Oleksandra Dyfuchyna on the topic “The method of optimizing the parameters of parallel computing based on Petri-object modeling” were presented. ScD, Prof. Oleksandr Pavlov. We congratulate Oleksandra with the recommendation for defense and wish her a successful defense!