Vol 18, No 2 (2022)

The subject of researcs: The article is devoted to the measuring complex for the experimental study of the SHS phenomenon.

The purpose of the development was to simultaneously observe microheterogeneous processes and macrokinetics of high-temperature synthesis.

Methods and objects of research: Embedded computing platforms with support for artificial intelligence tools are used to organize high-speed multi-zone registration of thermal imaging and spectral data.

Results of research: Within the framework of the complex, a group of intelligent modules with autonomous data analysis in real time has been developed. The pyrometric module of the complex reveals structural phase transitions in the process of high-temperature synthesis of materials and measures characteristic temperatures. The thermal imaging module determines the position of the SHS wave front and plots the material and temperature phase distributions on the sample surface. The mechatronic module predicts the location of a new observation area, based on the measured parameters of the SHS process, and moves the optical control means there when the combustion wave leaves the current registration area. The interaction of intelligent modules of the mechatronic system is implemented through messages in a wireless network, and their synchronization via the NTP protocol has an error of about 40 μs.

The subject of this work is oxide potassium-titanium bronzes.

The purpose of the work: to establish the relationship between the dispersion of samples of oxide potassium-titanium bronze and its physicochemical properties.

Synthesis methods: self-propagating high-temperature synthesis (SHS), mechanosynthesis. Research methods used in the work: X-ray phase analysis (XRF), optical method for determining particle size, four-probe method for determining electrical conductivity, thermal analysis, method for determining chemical resistance.

Results of the study: particle sizes were determined, which are 400, 200 and 40 nm. The work is devoted to the study of the influence of fineness on the structure and physicochemical properties of compounds of variable composition on the example of titanium oxide bronzes. A nanocrystalline sample of oxide potassium-titanium bronze was obtained by mechanosynthesis, coarse powders were obtained by SHS. The obtained samples were identified by X-ray phase analysis. The optical method of analysis determined the particle sizes, which are 400, 200 and 40 nm. It has been established that nanocrystalline samples of oxide potassium-titanium bronze are less resistant to aggressive media. Reducing the particle size does not affect the thermal stability. In the transition to nanoscale, the specific electrical conductivity increases by 1.5 times and amounts to 0,076 Ohm^-1•cm^-1. The volume density of defects in the nanocrystalline structure of oxide potassium-titanium bronze is calculated, which is 10¹³ cm^-2.

The subject of the study is electric power processes in integrated test benches with DC machines and induction machines operating on the principle of mutual loading. The purpose of the study is to obtain a mathematical model that allows us to study the operation of DC machines under specified conditions. Methods of mathematical modeling, well-known mathematical models of elements of two-link frequency converters, numerical methods for solving differential equations systems using the Runge-Kutta method of the fourth order of accuracy implemented in the Mathcad computer algebra system are used for the study. Mathematical modeling takes into account the nonlinearity of the magnetization curve of the magnetic circuits of electric machines and the pulsations of constant voltage supplied to their windings caused by the operation of converters. As a result of the study, mathematical models of electric power processes in test benches were obtained, which allow calculating currents in all branches of the considered electrical circuits, electromagnetic moments and the rotation frequency of the common shaft. The developed mathematical models can be applied in the design of integrated stands for testing DC machines and asynchronous machines by the method of mutual loading.

The purpose of the study is to identify the influence of frequency characteristics in the formation of an optimal set of security devices.

Object of research: frequency characteristics of the use of technical security equipment at the regional level.

Methods: Harrington's algorithm for converting desirability values into a generalized indicator, a special directed enumeration of demand vectors, selection of a set of Pareto optimal alternatives, pairwise comparison of estimated relations.

Research results: 1. Demonstrated the possibility of improving the frequency characteristics, leading to a reduction in price while maintaining a high (sufficient) level of desirability. 2. A graphical instrument cluster selection tool for the decision maker is introduced.

The development and improvement of training algorithms is of special scientific and practical interest in the field of application testing. In the context of expanding the field of application of probabilistic models of Bayesian networks for solving testing problems, there is a need for stochastic assessment of hidden parameters, as well as the formation of a complete joint distribution across all variables. The growth of the dimension of probabilistic models for solving various scientific and applied problems requires the development of optimal procedures for training parameters in accordance with existing algorithms, as well as the development of new solutions. The subject of the study is testing models used to represent probabilistic relationships between individual test modules, which allow timely configuration and use of test generation to detect certain groups of program errors. The aim of the study is to develop effective stochastic algorithms for training parameters of test models, which allow you to obtain more accurate values ​ ​ of a priori distribution of parameters. The study proposes methods and algorithms for training parameters of testing models based on a stochastic gradient in combination with the Monte Carlo method using Markov chains to form a preliminary distribution over all hidden variables in accordance with the available set of training data. The results of the study showed the viability of theoretical assumptions and made it possible to implement the optimal algorithm for solving the problem of training probabilistic models of testing web applications. The proposed methods and algorithms are constructive and make it possible to increase the accuracy of training parameters of test models in the presence of hidden variables.

The preservation of material values carried out by security organizations requires scientific research and justification of the decisions taken. From the analysis of scientific research, it is concluded that currently approaches to modeling and optimizing individual processes of security activities are diverse and use different sets of indicators to assess their effectiveness. The subject of the research covered in the article is the method of modeling guarding activities. The purpose of the work is to develop a unified modeling method, the fundamental result of which is to ensure the functioning of the security organization as a whole. The research uses methods of studying, comparing and analyzing existing approaches to modeling security activities, generalizing and formalizing the results of previous studies. In the work, the decomposition of security activities into processes is carried out, the stages of providing security services are highlighted, their content and meaning are shown. It is proposed to introduce a target function of security activities that takes into account the risks of individual processes. Examples of the formalization of the objective function for the processes of monitoring and responding to signal information are given, allowing the formulation of optimization tasks. Conclusions are drawn about the universality and necessity of applying the proposed modeling method and criteria for optimizing the functioning of security organizations. The results of the study are a unified method of modeling security activities and formalization of the tasks of optimizing the risk of individual processes of security activities.

The subject of research: The article is devoted to the actual problem of benchmarking in the housing and communal services sector.

The purpose of the article is to present the results of the implementation of the concept of an intersectoral benchmarking site with a single coordinating center based on the resource-providing enterprise ME "Vodokanal" of the city of Khanty-Mansiysk.

The methodological basis for the development of the concept is the analysis of the principles of scientific management proposed by U.F. Taylor, the principles of socialist exchange of experience, the research of Bernardo de Souza, the practices of the Toyota company, the best practices of Russian enterprises in the housing and communal services sector, presented at the sites of the Federal Competence Center.

Results of research: The authors have developed a format for a benchmarking site, substantiate the results of such a site, the economic effects of the exchange of experience in the proposed format. As a result of the activities of such sites, it is possible to achieve a synergistic effect that significantly accelerates the pace of development of the housing and communal services industry.

The subject of this study is the category of "criminal legal impact" developed by the doctrine of criminal law.

The purpose of the study is to determine the essence of the declared legal phenomenon, as well as to systematize the measures of state coercion included in its scope.

Methodology. The methodological basis is represented by the dialectical method of scientific cognition. In the course of the research, private scientific methods of cognition used in the humanities were also used. Thus, when presenting empirical material, formulating conclusions and research results, methods of formal logic were used. When determining the essence of the criminal legal impact, as well as criteria for systematization of state coercion measures included in its scope, inductive, deductive, and content analysis methods were used.

Results. Based on the analysis of criminal legislation, theoretical studies of the legal field under consideration, the concept of criminal legal impact is formulated, its essence and forms of implementation are determined.

In this publication, the subject of research is theoretical problems and phenomena that hinder the normal information support of law enforcement policy. In this regard, the article provides a legal analysis of the information support of the relevant policy. The aim of the study is to find ways to overcome low-quality legal information functioning in the public sphere and negatively affecting the law enforcement policy. The methodological basis of the research includes the dialectical, historical, comparative legal methods and the legislative and textual interpretation of a number of publications. Main results and conclusions: as a result of the conducted research, it was concluded that the information support of law enforcement policy is a purposeful legal activity that includes theoretical and applied aspects. At the same time, the most important role in information support is played by legal information providers who create and disseminate information of political and legal significance.

Increasing requirements for the results of the education system made it necessary for young teachers to search for individual educational routes for professional development. Thus, the subject of the present study is the choice of an individual educational route, and the object of the study is a young teacher.

The purpose of this work is to study the choice of an individual educational route by young teachers.

Materials and methods. The main methods of this study are the deductive method and the method of pedagogical analysis, which allow a fresh look at traditional problems and established views on the choice of professional development by young teachers. Our scientific analysis of the category of an individual educational route is aimed at a comprehensive study of the essence and tasks of choosing an individual way for young teachers to realize their professional potential.

Results. The study showed that the choice of an individual educational route for professional development is influenced by both internal and external factors. In many ways, this choice is determined by the personal characteristics of a young teacher, his interests, directions related to the tasks of his professional development.

Findings. An analysis of the results of experimental work proves the objectivity of the perceived choice by teachers of the components of an individual educational route. The choice of components is largely due to systemic changes in the professional and pedagogical activities of teachers.