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Information × Registration Number 0216U002340, 0113U002175 , R & D reports Title Methods and means of improving the quality of service data flow based on the local model of the controlled process popup.stage_title Head Lugovoi Anatolii Vasilyavich, Registration Date 18-02-2016 Organization Kremenchuk Mykhaylo Ostrogradskiy State University popup.description2 The aim of this work is to develop theoretical principles, methods and tools to improve the QoS of users based on the concept of a local model of controlled process (LMCP), which increase reliability, fault tolerance and security of computer network in conditions of uncertainty its structure and parameters. The object of research - process of data transfer in computer network. Subject of research - mathematical models of processes and channels of network data transmission, methods and means of ensuring its service quality. For the first time developed the principles of using LMCP in problems of providing quality user service and performed formulation of the basic problems of QoS based on the concept of LMCP. For the first time developed the method of parametric identification of mathematical models of processes data transfer based on the LMCP. Developed basic algorithm of synthesis of LMCP for control objects described by ordinary differential equations. Developed a method for creating LMCP in the form of control's impact which is equivalent of the effect of external factors, and adapted to the problems of optimal choice in discrete control systems. Developed the mathematical implementation for LMCP and for the identification of parameters of the mathematical model of the data transfer process in the form of differential equations based liquid approach and set-theoretical model of describing the interaction of client-server systems in the problem of intercepting and analyzing data packets to relational database management systems (DBMS). Developed the algorithmic implementation of process of synthesis of local model for the problem of network traffic control based on the basic algorithm RED / ARED and discrete synthesis of local model of the internal structure of the SQL-query package. Developed the software as a multimodules client-server application consisting of services to intercept network traffic at the data link layer model of OSI, optimizing internal content of data packets in period between minimal network load and packet spoofing if exist corresponding LMCP metadata database in real time. Developed the information technology (IT) for management of congestion while providing QoS based on LMCP of data transfer. Developed the IT of external optimization SQL-queries based on building LMCP under uncertainty of physical and logical database structure. Product Description popup.authors Бельська Вікторія Юріївна Бугаєць Наталія Сергіївна Гученко Микола Іванович Костенко Павло Павлович Луговой Анатолій Васильович Славко Олена Геннадіївна Сохін Наталія Леонідівна popup.nrat_date 2020-04-02 Close