Vol 19, No 2 (2021)

The paper evaluates the effectiveness of the disciplines for servicing requests for designing info-communication services in a non-stationary resources flow. The situation is considered in which part of the applications is refused in implementation. A comparison of well-known application service disciplines is made and their advantages and disadvantages are shown. The new discipline of servicing requests for designing info-communication services with a non-stationary flow of resources is given. The main idea of this new criteria is to maximize the value of error function. Error function combine the addictiveness effect of creating info-communication service for organization, rejecting of requests and to container request into queue. The advantages of the developed application service discipline for designing info-communication services in comparison with the most well-known application service disciplines are considered. This effect is viewed at the situation of required resources to using resources ratio is more than 1.15.

In this paper, we propose a method for determining the location of phonological formants that is not associated with the analysis of the amplitude spectrum and provides their isolation in the merged speech. The formants selected on this basis are grouped into phonemes, the correspondence of which to a particular sound is determined by the minimum distance from the base phonemes. A table of basic phonemes of vowels and several consonants is compiled. The regularity of the location of the basic phonemes and their binding to the coordinates of the location on the main membrane of the cortical organ is revealed. The results of the work are intended for creating autonomous automated speech recognition systems.

In the article research potential possibilities of estimating the basic mode transmission coefficient based on analysis overlapping of the radial distribution fields in discrete representation. Considered the process of passage the fundamental LP01 mode, characterized by the simplest distribution field, through the connection of a pair of single-mode optical fibers, made with a certain radial mismatch with a scatter in the values а spot radius mode interacting modes. The results of experimental verification of the proposed method are presented, which have demonstrated the potential of its use.

Currently, most local and regional switched packet data networks are built using Ethernet technology, which is the focus of the IEEE 802 group of standards. It has many advantages - high bandwidth, simplicity, scalability, compatibility, etc. But on the other hand, in Ethernet networks there is no predictability in data delivery, which limits their use in real-time systems, especially for industrial applications. Therefore, the IEEE has developed a special modification of Ethernet technology - Time-Sensitive Networking (TSN). TSN technology is based on the IEEE 802.1 and IEEE 802.3 standards and therefore is fully compatible with classic Ethernet technology, but at the same time provides a minimum and predictable data packet delay level. In recent years, TSN technology has begun to be actively implemented not only in industrial networks, for example, industrial Internet of things IIoT networks, but also in traditional communication networks, for example, to implement the fronthaul segment in 5G networks. However, information on TSN networks is practically not covered and is not summarized on the pages of domestic publications. With this in mind, this article provides an overview of TSN standards, technologies and principles for building time-sensitive networks.

This article presents the development of a simulation model for the study of user behavior in distributed information computing systems, the development of a language model for describing user behavior, access rights are described, key information for compiling a profile of normal user behavior is revealed, a structural diagram and a mathematical model based on the method of analyzing abnormal user behavior are developed. based on an automaton model, which is created on the basis of the rules of unauthorized user actions, and contains signatures of anomalous user behavior, a formal representation of the transition table and a sequence of user actions is described, an automaton model of user behavior is developed, a generalized model of user behavior as a digital automaton is presented, as well as an algorithm diagram user actions. The study used the methods of information security theory, automata theory, pattern recognition theory and the theory of computing systems design.

This paper examines the design of a mHealth-class mobile application that allows to follow the recommendations for vaccine prevention and promotes the prevention of infectious diseases. However, despite the openness and availability of information in this area, there is a lack of objective and reliably verified information. The article proposes a project for a medical mobile application for recording vaccinations. Which will take into account the data of the national schedule of preventive vaccinations and a number of indicators, individual for each child (age, well-being of the child, allergy susceptibility, temperature, time of previous vaccination, etc.). Based on which the vaccination schedule should be formed «for a particular child» and, if new data are entered, corrected and/or shifted. As a model of knowledge representation, we choose the ontological approach, which allows presenting a coherent system of concepts of the subject area under study. The main tasks of the medical BR are as follows: informational support for parents (maintaining a current national schedule of preventive childhood vaccinations, information about existing vaccines and their manufacturers, possible allergic reactions, etc.); creating a scene reflecting the individual characteristics of the child; maintaining a hierarchy of classes of concepts, individual instances and properties of these concepts.In the course of the study, an ontology developed by using the Protégé ontology editor, a comparative analysis of available analogues performed on the market, and a detailed list of functional requirements that a vaccination accounting application must meet was developed.

The article considered possible models and algorithms based on the analysis of features of energy and time characteristics and/or characteristics of directional pattern that consider the features of the spatial location of the signal source (or sources) for the subsequent localization of the sound source, in relation to fiber-optic sensor networks, to solve the problem of determining with a given accuracy the location of the attacker on the protected object. The most optimal model was chosen based on estimates of the difference in the delay time of acoustic signals at different reference points of the backscattering characteristic of the optical fiber of a distributed acoustic sensor (DAS). As an example, the results of calculating the deviation estimates for determining the coordinates of the sound source as a function of the noise level in a room with two optical fibers laid in parallel along opposite walls are presented.

Operation of power system in conditions of constant changes in the external environment combined with their high complexity leads to the need for sophisticated management decisions. This article analyzes the activities of the power system to improve the efficiency of its functioning on the example of the Samara region. The structure of the decision support system was developed to improve the efficiency of power system management. In the proposed algorithm, the principle of a systematic approach to resource conservation in energy production was implemented. Mathematical models have been built to describe the functioning of the power system. Generalized criteria for the efficiency of power equipment operation were formulated. A management system was designed and proposed that allows obtaining scientifically grounded management decisions in the field of energy investment.