The mathematical model for meteorological software for systematic flood control in the Carpathian region is presented. The implementation of this mathematical model will effectively control and predict the process of formation and passage of floods based on three levels of decision making over time: real-time operational management; short-term forecasts of meteorological factors: very short-term (up to 3 hours), short-term (up to 3 days) and medium-term (up to 10 days) during the year; planned management. The scientific approaches to the creation of the systematic management of flood passing are considered. It was combined three traditional decision-making levels in time (project, planned exploitation and operational management) in an interconnected system of flood management with appropriate steps of their implementation by creating a unified subsystem of information support, primarily of meteorological support. The basic principles of creation and implementation of a self-developing system of database formation of appropriate meteorological support is presented. In general, terms defined the perspective efficiency of an improved system of floods passing.

The paper analyzes and compares different models of epidemic spread. There are parallels between the study of epidemiology and the behavior of the virus on a computer network. Among the considered models the classical model SIR was allocated. It takes all the main features of the spread of the virus and is easy to implement. As a result of applying the classic SIR model to a medium-sized network, a prediction was obtained about the long-term behavior of the infection and the speed of its spread in the computer network.

This article identifies, reviews and investigates mathematical model for a new type of communication networks - flying sensor networks, which due to the widespread use of WTN, WSN and RCA for public use, which are organically part of the complex of interacting communication networks. Methods of probability theory, queuing theory, theory of teletraffic simulation modeling, quantitative and qualitative analysis and method of system analysis were used to solve the tasks set in the work.

The paper discusses models and methods for improving the performance of wireless computer networks built based on the decomposition of the lower levels of the OSI reference model. A method to improve the performance of networks is suggested, which functionally combines the physical and network layers, which improves its efficiency in marginal reception areas almost twice. A model of the block diagram of a device for improving data transmission quality in marginal reception areas or those with insufficient noise immunity is developed based on the so-called communication quality status monitoring, as well as a model of the block diagram of a wireless adaptive capacity reallocation router based on dynamic channels capacity reallocation, which allows adequately reallocating IS resources depending on traffic and user priority. Keywords— Bluetooth, FIFO discipline, IEEE 802.11, OSI/ISO reference model, wireless computer networks.

Investigation of laser rangefinders with sensor network interface

В даній статті досліджено похибки вимірювання механічних величин у безпровідних сенсорних мережах та мікропроцесорних частотомірах, що під’єднані до вузлів сенсорних мереж і разом являють собою інформаційну вимірювальну систему. Досліджується задача визначення похибки вимірювання відстані та часу проходження сигналу між прийомопередавачами. Розрахунок відстані здійснюється за допомогою часу поширення сигналу. Проведена оцінка похибки мікропроцесорного частотоміра, що вимірює частоту хаотичних радіоімпульсів у сенсорних вимірювальних мережах, як величини, що обернена до часу проходження сигналу