A model of impact in a social network is a weighted directed graph. Its vertices correspond to the members of a social group, and its arcs describe their mutual impact. A real value (an opinion of the group's member) as a function of time is ascribed to each vertex, and a real number (weight) is ascribed to each arc (a degree of impact of one member of the group to another or, what is the same, a degree of confidence of one member of the group to another). All strong subgroups (non-degenerated strong components of the digraph) develop their final opinions which depend only to the initial opinions of their members. The final opinions of other members of the group are linear convolutions of the final opininions of all strong subgroups. A number of indices is used for the additional quantitative characteristics of the social group. From the marketing point of view, the solution of the analysis problems provides a segmentation of the target audience for the determination of the most appropriate objects of marketing impact (members of the strong subgroups).

Keywords: directed graphs, differential games, dynamic control models, marketing research, social networks

The development of modern technology makes increasingly stringent requirements for materials, and improving the reliability and durability is an urgent task for many industries. One of the most important elements of the automatic coupling device of the car is the absorbing device. The parts included in it must meet high standards, be reliable and provide the necessary hardness and mechanical properties of the materials throughout the life cycle of the car. One of these parts included in the friction unit of the absorbing device is a movable plate. In the present work, an example of modernization of the absorbing apparatus through the use of modern methods of modeling and manufacturing of a fixed plate is given. The technical result is to reduce consumption of materials of the movable plate, and to simplify the manufacturing process of the plate by making it from rolled steel.

Keywords: Absorbing apparatus, modeling, mobile plate, energy consumption, friction unit, friction, wear resistance, reliability, durability

The article substantiates the relevance of research for solving problems of designing automatic control systems for welding processes. The purpose of the experiments was determined to obtain empirical dependencies of welding parameters, which could be used to identify the parameters of the transfer function of the automatic control system. A brief review of similar scientific papers. The description of the shunting mechanism is given, its influence on the efficiency of the welding process is studied. A number of empirical dependences of changes in the parameters of plasma welding on the conditions of use of the filler wire were obtained.

Keywords: plasma welding, filler wire, control system, shunting, plasma gas, experimental dependencies

Applied control problems in education organizations are formalized as discrete optimization problems. Namely, complex evaluation and personal structure optimization problems are considered. The principal role is played by the notion of homeostasis of the education system describing by means of the model constraints. For the solution of these problems it is rational to use simulation modeling. Namely, the method of qualitatively representative scenarios is assumed to be appropriate.

Keywords: discrete optimization, complex evaluation, control in education systems

Voice over Internet Protocol (VoIP) is a widely deployed service since the commencement of voice and data integration. This was done in a bid to reduce cost and management concerns. VoIP uses the same infrastructure as traditional data networks and thus, inherits all the security challenges of a data network. In addition, VoIP exhibit self-inflected problems resulting from network components and the protocol adopted. This paper present the security threats witnessed in VoIP telecommunication. The paper discusses the security threats in tandem with confidentiality, integrity and availability principle. Examples of security issues under consideration include; spamming, identity spoofing, call tempering, DoS, and Man-in-the-middle attacks among others. Finally, the paper will outline the common countermeasures adopted to mitigate the threats.

Keywords: VoIP, VoIP security, voice over IP security, DoS, spamming, identity spoofing, call tempering, Cybercrime, Computer security

The main goal of modernization in the field of education in the world is to achieve a new quality of the educational process corresponding to the new socio-economic conditions. This requires effective organization of the educational process, which will facilitate the search and development of abilities in each student. The result of the teacher’s work should be an active, creative, and cognitive organization of students' joint activities. Also important is the development of students' skills of the 21st century, which would be useful in their future professional activity, where the latter requires the ability to work not only with information, but also with people. These can be communication skills and teamwork skills, flexibility and adaptability, the use of the aggregate intelligence of a group that is a joint activity to achieve the goals.

Keywords: Internet, Web 2.0 tools, social network, cognitive activity, network services

The article provides a solution to the problem of the stress-strain state of the base in the field of karst dip. The problem is considered in the linear formulation for a layer of bounded thickness weakened by a cylindrical notch. The solution is obtained in polynomials based on the use of the Solyanik – Crass stress functions satisfying a quasi-harmonic type differential equation. The main task was solved on the basis of using the principle of superposition. The verification of the obtained solution was carried out on the basis of a comparison of the components of the stress and displacement tensor with the results of numerical solutions. Graphs constructed using the Mathcad mathematical complex and the Plaxis software complex were considered. Their analysis showed good convergence of the results.

Keywords: Karst, cylindrical cavity, stresses, displacements, isopolis, linear formulation, mixed problem

The analysis of the used algorithms for the search of unstructured information was carried out, during which it was established that they do not take into account the thematic orientation of the specialized collection of documents. It is proposed to use an annealing simulation algorithm to obtain numerical coefficients used in the information retrieval ranking algorithm system. The results of the standard and modified search algorithm and ranking search results unstructured information. As a result, the value of quality metrics failed improve by an average of 8%, and the average error decreased by 29%

Keywords: information retrieval, ranking, model, quality metrics, relevance, unstructured information

The problem of recognition of defects in the surface layer of polished raceways of bearing rings according to the fractal dimension of the signals of the eddy current sensor is considered

Keywords: fractal dimension, defect recognition, recognition algorithm

The process of analysis and modeling is proposed to be carried out in three stages: determinism, stochasticity and adaptability. The essence of these stages is revealed. The authors highlight the problem of predicting changes in partial failure, affecting the state of the technical system. The main distinctive features of such a refusal from the full (partial loss of working capacity, reducing the number of functions performed, and others) are shown. A diagram of the development of possible degradation processes in a technical facility as a result of partial failure is presented. Transitions to the states of several consecutive partial failures or transitions to a complete failure after one or several partial ones are possible. With getting into a state of complete failure, the object is fully restored. Developed proposals for the sequence of operations for the identification of failures at the level of the generalized algorithm. An illustrative example considers a fragment of the transition of a partial failure to another partial failure, which develops into a complete failure with the impossibility of further functioning of the electric machine for its intended purpose. The conclusion is made about the need to use expert systems and assessments for making decisions about functioning in conditions of partial failure.

Keywords: partial failure, critical failure, degradation change failure, diagnostic task, electric machine

The work is devoted to the review of application of wireless technologies for measurement of parameters of technological processes. Two types of wireless network architectures are considered: "star" and "cellular". It is proposed to take as a basis the topology "cellular scheme". Three wireless standards are given: ZigBee, Wi-Fi and Bluetooth. The advantage of ZigBee technology is shown. RFID technology is considered as the basis of the wireless sensor. Features of construction of system with its application are considered. The block diagram of the control system is given. Classification of RFID-tags is given. Examples of such sensors are given.

Keywords: wireless technologies, cellular circuit, RFID tags, wireless sensors, automation of technological processes

Despite the rapid arrival of technology, technology development is slow. This is an effective programming. This research paper presents an example of the state of finite automata on the example of vending machines.

Keywords: State machine, Structured text, IEC 61131-3, CoDeSys, object-oriented programming, CASE, inheritance, interfaces, methods, state

This article deals with such concepts as system of a continuing education and the electronic educational resources. A theoretical analysis of the informatization purposes of the educational process is presented. Analyzed the practical using of an electronic educational resources in the system of a continuing education. Distance education, information sources of complex structure, innovative educational and methodical complexes as a result of the using of digital technologies in the system of continuous education are presented.

Keywords: continuing education, electronic educational resources, digital educational resources, informatization of the educational process, information sources of a complex structure, innovative educational and methodical complexes, distance education, digital res

The method of managing the recipe of dry magnesia cement mixtures (DMCM) during their production, intended for cement slurries for cementing oil and gas wells, is characterized in that the recipe of the mixture is selected based on the requirements for the characteristics of the cement slurry and the quality of the cement stone, which are determined in the order in relation to the mining and geological conditions of a particular well. The method is based on solving multiobjective optimization problem in which as criteria protrude partial deflection characteristics of the resulting solution of the SMTS from predetermined values in order for the production batch. Generalized criterion problem is formed as an additive objective function of the weighted partial criteria.

Keywords: oil and gas wells, rheological characteristics of cement slurry, dry magnesia mixture, experiment planning, regression models of communication, optimization of mixture formulation, generalized criterion

In the Russian economy, in a situation aggravated by the sanctions pressure from the United States and several EU countries, there is an acute problem of growth on the threshold of the 4th industrial revolution, which seems to be a necessary prerequisite for technological modernization of the country. The work examines possible mechanisms for achieving modernization and innovation growth in the regions of the Russian Federation: special economic zones, advanced development areas, industrial and technological parks, industrial clusters, which are mechanisms for accumulating a set of benefits in implementing new investment attraction vectors. It justifies the need to develop a strategy for the sustainable socio-economic development of the region, taking into account the assessment of its potential, analysis of competitive advantages and resource constraints. The introduction of these mechanisms implies a focus on long-term development, horizontal diversification, through the leadership of high technologies, harmonization of tasks, instruments of industrial and socio-ecological and economic development of regions with a focus on a fairly high standard of living.

Keywords: economic transformation; technological structure; region; strategy; 4th Industrial Revolution; cyber-physical systems, territory of advanced development; zones of technical and economic development; investments

The probabilistic model of perception of concrete propaganda information is presented. Previously, such a model was developed by us for subjects with a neutral attitude to propaganda in General. Now it is generalized to the case of arbitrary relation. In the model, the perception of a particular news is stochastic in nature, and in the limit goes to the levels of complete reliability or complete unreliability. At the same time, there is a connection between the level of global perception of propaganda as a whole and the levels of local perceptions averaged over the entire previous ensemble of specific news . On a concrete example it is shown that the offered model allows to restore for any investigated group dynamics of local perception of concrete information on known functions of distribution of global perception. This information is important to identify the features of perception, depending on the external and internal characteristics of the study group. In addition, the model presented in this article is the basic one. One of its purposes is to serve as a basis for further expansion along the way of taking into account the impact of the social environment. That is supposed to hold in the future.

Keywords: propaganda, perception, in General, individual news, modeling, probabilistic-stochastic approach, discrete-event approximation, Bayesian theory, multi-agent analysis

Wide integration of computing resources into physical processes resulted into evaluation of new concepts and evaluation of a concept of cyber-physical sysems in particular. The article reveals an approach of implementation of cyber-physical processes into construction field. Since the process of construction faces the problems, which were traditionally considered as poorly formalized, that leads to an accumulation and transfer of huge amounts of often heterogeneous in its structure and purpose of information. As a result of a detailed analysis of the prerequisites for the creation, structure and functions of cyber-physical systems, the authors establish that the solution of such problems is engaged in cyber-physical systems. The importance of the use of cyber-physical systems in the construction industry is due to its significant role in the economy of any country. The authors identify a number of areas of application of cyber-physical systems in construction, such as monitoring and control of various parameters and systems, logistics and many others. Further studies of the authors need the development of specific algorithms for the implementation of cyber-physical systems in solving these problems.

Keywords: construction, cybernetics, cyber-physical system, cybernetics of construction systems, internet of things, internet of services, internet of people, united information space, construction system, synergy of cyber space and real world

Development of electric energy converters with high energy characteristics is an important scientific and technical task. The solution of this problem is impossible without the use of modern methods of computer modeling. To improve the quality of electricity, filter-compensating devices are used. Develop converters with good energy performance. In this paper, we developed a computer model and circuit of the AC voltage regulator with high-frequency pulse modulation of the output voltage. Methods of digital signal processing and computer simulation are used. In the environment of the software product MATLAB, a program synthesizing the form of voltage at the output of the AC voltage regulator. The program uses a variety of algorithms to control the power keys of the AC voltage regulator. The results of harmonic analysis of the output voltage of the regulator are presented. The study of the AC voltage regulator circuit is performed in the environment of the ORCAD software product. The work of the scheme on the active-inductive load is considered. Electromagnetic processes occurring in the circuit of the AC voltage regulator are investigated. The optimization of the scheme elements is performed. Time diagrams of currents and voltages are obtained. The results of computer simulation can be used in the development of electrical energy converters for electrochemical and electro thermal production.

Keywords: computer simulation; AC voltage regulator; algorithm; high-frequency pulse modulation; time diagrams; transistor key; control system; harmonic composition; damping circuit; thyristor; active-inductive load

The article deals with the problem of solving the inhomogeneous minimax problem typical for the theory of schedules. This problem is NP-complete and for it there is no exact algorithm of the solution having polynomial time for problems of big dimension. A modified Goldberg model is considered as a method of solving this problem. Godberg's model is considered with several crossovers and the most effective mutation. Under certain parameters (a large number of individuals and repeats), the modified Goldberg model receives a solution for a long time, so the article analyzes in detail one of the approaches to reduce the operating time without loss of accuracy. Since it is extremely difficult and practically impossible to make calculations analytically, a computational experiment was put into operation. As a result of the computational experiment, the tables provide a comparison of the efficiency of the modified Goldberg model after the use of HT technology. The use of HT technology leads to a significant reduction in time costs.

Keywords: single-point crossover, two-point crossover genetic algorithm, modified Goldberg model, mutation, minimax problem, scheduling theory, individual, generation, hyper-threading

The process of development of the automated information system of the accounting of devices and the equipment of the road sphere is considered. The second stage of the life cycle – design using CASE-technologies of object-oriented approach is described. This material covers the main processes implemented in the project, such as: search, purchase of equipment and others. The diagrams of the sequence and components in the UML language, as well as the database schema and user interface project are presented.

Keywords: instrumentation, equipment, metrological verification, object-oriented approach, designing, Microsoft Visual Studio, UML, sequence diagram, components diagram

The article presents the author's theoretical and methodological construct of the study of socio-political behavior of the social actor. The developed construct is based on the concept of habitus introduced into the scientific discourse by Pierre Bourdieu. The socio-political habitus in this article is understood as interiorized patterns of perception, interpretation, evaluation and action in the socio-political space, which are constantly being refined and completed under the influence of everyday social practices. Denoted epistemological problem of combining the contradictory nature of the conduct and integrity of the habitus. As a solution to the problem, such a property of habitus as hierarchy is considered. It is assumed that in the deep structures of habitus there are integral models of social dynamics, which are reproduced in socio-political relations by spontaneous coordination of social practices of many social actors. However, each social actor represents a single element of the complex model. Such social dynamic models in this article are denoted by the term "myth". On the basis of the presented theoretical model, the solution of applied problems in the management of socio-political behavior is proposed. At the same time, the authors proceed from the fact that mythological complexes in the structure of the habitus can not be eradicated or replaced, but can be overbuilt.

Keywords: political relations, model, myth, habitus, management, regulation mechanism, calibration

The task of creating a file format containing an image having an optimized (compressed) size is considered. The source file is in BMP format. The problem is solved on the basis of optimal interpolation of the data by polynomials of various degrees. The simulation of the algorithmization process was performed in the MATLAB package. The proposed algorithm showed good compression of the initial information.

Keywords: image, BMP format, compression, algorithm, polynomial regression

Currently, the topic of creating groups of mobile robots for solving group tasks is very popular. In this connection, there is a question of the implementation of information exchange within the team. The article discusses the existing approaches to organizing information interaction in groups of intelligent robots, and also provides a brief analysis of the features of information exchange, depending on the type of control strategy. A method of organizing the exchange of information, taking into account the limitations of on-board telecommunications systems of mobile robots, is proposed. The proposed method is based on the use of epidemic algorithms and swarm sweep methods for routing. The result of software simulation is provided.

Keywords: group control system, coalition of robots, information exchange, epidemic algorithm, limited communications, small-sized robots, dynamic systems, software modeling, control model, interaction of robots

systematically studied the rates of publication of scientific articles and their appearance on the websites of many journals and e-library . It is shown that only a few editions of journals provide sufficient speed of publication of articles. The adoption of appropriate administrative measures to ensure high rates of publication of articles will help preserve the author's priority, increase the citation rate of articles, the Hirsch index, the originality of materials and, in general, increase the scientific productivity of Russian scientists.

Keywords: journal, annotation, table of contents, publication speed, website, level of availability, article citation, order price

The article reviews considers the current state of automated process control systems. The main disadvantages of these systems are identified: the lack of full integration of process control systems into a single enterprise system, the lack of a single system of monitoring and diagnostics of equipment, local data storage. The principles of development of automation of the chemical industry in the conditions of digital production, such as end-to-end modeling, implementation of a unified data collection system based on the technology of industrial Internet of things, the introduction of cloud technologies to store the accumulated database and knowledge. This strategy of automation development allows to increase the competitiveness of the chemical industry.

Keywords: production automation, digital production, end-to-end modeling, industrial Internet of things, production management integration.