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    Π ΠΎΠ·Ρ€ΠΎΠ±ΠΊΠ° ΠΌΠ°Ρ‚Π΅ΠΌΠ°Ρ‚ΠΈΡ‡Π½ΠΈΡ… ΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Ρ–Π² ΠΏΠΎΡ‚ΠΎΠΊΡ–Π² Π΄Π°Π½ΠΈΡ… Ρ–Π½Ρ„ΠΎΡ€ΠΌΠ°Ρ†Ρ–ΠΉΠ½ΠΎ-Ρ‚Π΅Π»Π΅ΠΊΠΎΠΌΡƒΠ½Ρ–ΠΊΠ°Ρ†Ρ–ΠΉΠ½ΠΎΡ— ΠΌΠ΅Ρ€Π΅ΠΆΡ–

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    This paper analyzes and mathematically models the parameters of data flows in the information and telecommunications network. The fluctuation in the data flows, which is inherent in modern multiservice systems, does not allow designing a system based solely on the average bandwidth indices. It is necessary to determine the parameters of the flows of data generated by the tasks performed in the network nodes, which requires devising mathematical models that would reflect both the information and the technical structures of the network.We have determined the structure of the mathematical apparatus for analyzing the network structure in the form of a complex mathematical model that describes the information structure, the data flows between the nodes and the technical structure of the network. The study describes basic parameters of the model of the network information structure, which lays the basis for modeling the data flows. The model parameters characterize the intensity of the data flows between the network nodes in performing the applied tasks and the queries of the user.The devised mathematical model describes the parameters of the data flows between the network nodes in the fixed information structure and takes into account both the exchange of data between the nodes, which results from the interaction of applications in separate nodes, and the user queries to the data stores. We have devised a mathematical model of the data flows in a stratified multi-tier information structure of the network that is typical of the most common modern technologies of the network construction. The model allows determining the loading capacity of the network channels and the network equipment while designing the technical structure of the network.The suggested models can be applied in devising the methods and detailed algorithms for managing the data flows in a specialized network.Π‘Ρ‚Π°Ρ‚ΡŒΡ посвящСна Π°Π½Π°Π»ΠΈΠ·Ρƒ ΠΈ матСматичСскому ΠΌΠΎΠ΄Π΅Π»ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΡŽ ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² ΠΏΠΎΡ‚ΠΎΠΊΠΎΠ² Π΄Π°Π½Π½Ρ‹Ρ… ΠΈΠ½Ρ„ΠΎΡ€ΠΌΠ°Ρ†ΠΈΠΎΠ½Π½ΠΎ-Ρ‚Π΅Π»Π΅ΠΊΠΎΠΌΠΌΡƒΠ½ΠΈΠΊΠ°Ρ†ΠΈΠΎΠ½Π½ΠΎΠΉ сСти Π½Π° основС модСлирования ΠΏΠΎΡ‚ΠΎΠΊΠΎΠ² Π΄Π°Π½Π½Ρ‹Ρ…. Π‘ΠΎΠ·Π΄Π°Π½Π° матСматичСская модСль, которая описываСт ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Ρ‹ ΠΏΠΎΡ‚ΠΎΠΊΠΎΠ² Π΄Π°Π½Π½Ρ‹Ρ… ΠΌΠ΅ΠΆΠ΄Ρƒ ΡƒΠ·Π»Π°ΠΌΠΈ сСти ΠΏΡ€ΠΈ фиксированной ΠΈΠ½Ρ„ΠΎΡ€ΠΌΠ°Ρ†ΠΈΠΎΠ½Π½ΠΎΠΉ структурС. Π Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Π° матСматичСская модСль ΠΏΠΎΡ‚ΠΎΠΊΠΎΠ² Π΄Π°Π½Π½Ρ‹Ρ… стратифицированной ΠΌΠ½ΠΎΠ³ΠΎΡƒΡ€ΠΎΠ²Π½Π΅Π²ΠΎΠΉ ΠΈΠ½Ρ„ΠΎΡ€ΠΌΠ°Ρ†ΠΈΠΎΠ½Π½ΠΎΠΉ структуры сСти, которая Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€Π½Π° для соврСмСнных Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³ΠΈΠΉ построСния сСтСй.Бтаття присвячСна Π°Π½Π°Π»Ρ–Π·Ρƒ Ρ– ΠΌΠ°Ρ‚Π΅ΠΌΠ°Ρ‚ΠΈΡ‡Π½ΠΎΠΌΡƒ модСлюванню ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Ρ–Π² ΠΏΠΎΡ‚ΠΎΠΊΡ–Π² Π΄Π°Π½ΠΈΡ… Ρ–Π½Ρ„ΠΎΡ€ΠΌΠ°Ρ†Ρ–ΠΉΠ½ΠΎ-Ρ‚Π΅Π»Π΅ΠΊΠΎΠΌΡƒΠ½Ρ–ΠΊΠ°Ρ†Ρ–ΠΉΠ½ΠΎΡ— ΠΌΠ΅Ρ€Π΅ΠΆΡ– Π½Π° основі модСлювання ΠΏΠΎΡ‚ΠΎΠΊΡ–Π² Π΄Π°Π½ΠΈΡ…. Π‘Ρ‚Π²ΠΎΡ€Π΅Π½ΠΎ ΠΌΠ°Ρ‚Π΅ΠΌΠ°Ρ‚ΠΈΡ‡Π½Ρƒ модСль, яка описує ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΈ ΠΏΠΎΡ‚ΠΎΠΊΡ–Π² Π΄Π°Π½ΠΈΡ… ΠΌΡ–ΠΆ Π²ΡƒΠ·Π»Π°ΠΌΠΈ ΠΌΠ΅Ρ€Π΅ΠΆΡ– ΠΏΡ€ΠΈ фіксованій Ρ–Π½Ρ„ΠΎΡ€ΠΌΠ°Ρ†Ρ–ΠΉΠ½Ρ–ΠΉ структурі. Π ΠΎΠ·Ρ€ΠΎΠ±Π»Π΅Π½ΠΎ ΠΌΠ°Ρ‚Π΅ΠΌΠ°Ρ‚ΠΈΡ‡Π½Ρƒ модСль ΠΏΠΎΡ‚ΠΎΠΊΡ–Π² Π΄Π°Π½ΠΈΡ… стратифікованої Π±Π°Π³Π°Ρ‚ΠΎΡ€Ρ–Π²Π½Π΅Π²ΠΎΡ— Ρ–Π½Ρ„ΠΎΡ€ΠΌΠ°Ρ†Ρ–ΠΉΠ½ΠΎΡ— структури ΠΌΠ΅Ρ€Π΅ΠΆΡ–, яка Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€Π½Π° для сучасних Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³Ρ–ΠΉ ΠΏΠΎΠ±ΡƒΠ΄ΠΎΠ²ΠΈ ΠΌΠ΅Ρ€Π΅ΠΆ.
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