The development of a decision support system for evaluating a fashionable image of a person is described. This is done by selecting a set of visual attributes from an image and comparing this set with "fashionable" patterns. Fashion patterns are set by the user himself. These are images that are defined in the system as reference images. This paper provides an overview of decision-making methods, analyzes the relevance of decision-making systems in different spheres of society. The algorithm of the program and the tools with which the image is first preprocessed are considered, then the visual attributes are highlighted. The method of making decisions for different types of attributes is given. The comparison of colors in HSL notation is considered.

Keywords: decision support system, decision making methods, machine learning, Python, model learning, image, fashion, information and analytical system, k-means method

The features of classification of construction products and construction materials are considered, and optimization of their existing classification structure is proposed. The analysis of existing domestic and international systems of classification of construction information, domestic normative and technical literature is carried out and classification features for construction material and construction product are determined. The optimization of the classification tables (CTs) based on the application of the principles of the ISO 81346 standard series and the refusal to duplicate the structure of the construction resources classifier, on reducing the number of classes and subclasses taking into account the ISO 81346 criteria and moving classes and subclasses within CTs with the corresponding changes in the code designations is suggested.

Keywords: construction information classifier, information modeling, information model of capital construction object, classification of construction materials and products

The paper discusses in detail the process of creating a tool for automated testing that allows you to test applications created for Android and iOS and also provides the results of the research that allows you to determine the reduction in time spent on testing procedures for mobile applications that arise when using the developed tool for all qualifying categories of specialists involved in testing applications. The modular method of solution construction proposed by the authors will allow the future to simply expand the functionality of the solution by adding new algorithms and testing modes, significantly increasing the ""coverage area"" of automated test scenarios.

Keywords: test automation, user interface testing, code generation, mobile testing, PageObject pattern, software testing, quality assurance, quality management, functional testing, time to market, delivery management

The paper calculates the probability of failure-free operation of parts of the supporting structure of foreign-made lifting equipment designed to perform loading and unloading operations of stone building material. When performing calculations, computer modeling of the stress-strain state by the finite element method was used. A distinctive feature of the proposed calculation methodology is the minimum required number of computer experiments, given that some of the input data are variable.

Keywords: probability of failure-free operation, lifting equipment, reliability

This paper discusses the Vue, Svelte, Solid and Lit frameworks used to create the View part of client web applications. Their design, the proposed approach to developing client applications, the problems they solve and create, their strengths and weaknesses, as well as their features and limitations in application are studied.

Keywords: Vue, Svelte, Solid, Lit, Web Components, view frameworks, client web applications, front end, rendering

The problem of ensuring trouble-free operation of field pipelines is becoming more and more urgent from year to year. The development of deposits in areas with difficult natural and climatic conditions (the Far North, Western Siberia) requires a new approach to improving the reliability of pipeline systems. Along with the search for new technologies in construction and operation, the use of modern composite materials in the production of pipes is a primary task. Analysis of the causes of failures of field pipelines in the permafrost zone allowed us to identify the main ones: corrosion, water hammer, loss of stability as a result of frost heaving of soils. Comparative calculations of steel and fiberglass pipelines allow us to recommend the latter as an alternative to metal pipelines, because they have better corrosion and abrasive resistance, low roughness and thermal conductivity, high ductility and manufacturability.

Keywords: field pipeline, fiberglass, analysis, reliability, permafrost, corrosion, water hammer, loss of stable position, frost heaving

The main maintenance of a diversification of production as activity of subjects of managing is considered. being shown in purchase of the operating enterprises, the organizations of the new enterprises, redistribution of investments in interests of the organization and development of new production on available floor spaces. The most important organizational economic targets of a diversification of management are presented by innovative activity of the industrial enterprise.

Keywords: wastewater, dephosphatation, acidification, nutrient removal

In connection with improvement of public welfare, coming to the fore are requirements enabling comfortable living, which primarily depends on conditions of indoor air environment. This article provides arguments to suggest that, during reconstruction and overhaul of residential buildings, natural ventilation systems, failing to provide the required air exchange, need to be replaced with hybrid ventilation systems, allowing to maintain stable ventilation in existing multi-storey buildings throughout the year and involving minor capital and operating costs. Based on the example of a typical nine-storey residential building, two variations of hybrid ventilation have been developed: containing an ejector and roof fans, with economic feasibility of using both determined.

Keywords: microclimate quality, air exchange, natural ventilation, hybrid ventilation, an ejector, a roof fan, economic feasibility

The advantages, disadvantages and limitations of the use of thread seams in the technological processes of product assembly are considered, the advantages of replacing thread seams with thread-free joints, ways to obtain them in order to control the competitiveness of the technological process of hot-glue assembly, the production processes of obtaining a flat thread-free connecting seam using modern technological equipment are shown, possible ways of its formation are given.

Keywords: method, control, technological process, thread-free connection, adhesive joint, seam, parts, products, thermal tape, adhesion, technological equipment

Issues of carrying out the identification of hazardous production facilities are discussed. On a real example of a survey of a warehouse of combustible substances, the implementation of a technical expertise with a conclusion drawn up on its results is illustrated. The article was written on the basis of the completed research work No. 22-78.

Keywords: hazardous production facility, identification, technical expertise, industrial safety, building structures

To improve the efficiency of low-orbit satellite Internet systems (LOSIS) and ensure high apeed of data exchange, systems supporting orthogonal frequency-division multiplexing (OFDM) technology are widely used. The use of OFDM methods makes it possible to expand the bandwidth of the radio channel based on the increase in spectral efficiency. In order to do this, OFDM systems use orthogonal signal transformation based on fast Fourier transformation (FFT). To reduce the time spent on signal processing, the article proposes to use discrete wavelet transformations of signals (DWT) implemented in modular residue classes codes (MRCC). The scientific novelty of the work lies in the fact that based on the integration of methods for constructing discrete wavelet transforms and methods for developing modular codes, mathematical models of DWT implemented in the MRCC will be created, the use of which will reduce the execution time of orthogonal signal processing in OFDM systems. This result will be achieved by parallelizing arithmetic operations on the modules of the modular code. At the same time, the use of low-bit operands makes it possible to switch from performing multiplication, addition, and subtraction operations in the MRCC to retrieving data from LUT tables. Thus, the development of mathematical models of discrete wavelet transformations implemented in modular codes of residue classes is an urgent task.

Keywords: OFDM systems, discrete wavelet transformation, parallel coding, modular residue classes code

Nitrogen oxides are one of the most common and toxic gaseous air pollutants of large industrial centers. The main difficulty of cleaning gas emissions is related to the dependence of the efficiency of the applied cleaning technologies on the NOx concentration, the frequency of emissions, the need for processing and/or disposal of products of interaction of nitrogen oxides with absorbers and regeneration of catalysts. The article analyzes the features of currently used and promising methods of cleaning waste gases from NOx, systematizes data on the effectiveness of such technologies. Based on the analysis of the processes of formation of nitrogen oxides, rational approaches to reducing NOx emissions in metal etching technology and electroplating are proposed.

Keywords: nitrogen oxides, biogenic and technogenic sources, catalytic and non-catalytic purification, selective purification, absorption purification, comparative efficiency

The experience of standardization of modular construction and factory-ready buildings of China, the USA, Canada, Great Britain, France, the Netherlands, Germany and others is considered. The analysis of the existing profile regulatory and technical documentation (RTD) in the Russian Federation. The analysis of domestic and foreign RTD showed that there is no unified approach to rationing of the considered subject area. At the present time it is necessary to update the Russian RTD in the field of modular construction. Based on the results of the analysis and synthesis of the world practice in the field of modular construction, recommendations and suggestions for working with terms and definitions, the variants of development of normative and technical documentation of the Russian Federation in the field of modular construction and themes of work for the development of modular construction regulation were developed.

Keywords: modular construction, quickly erected buildings, prefabricated buildings, technical documentation

The method of automated diagnostics and control of the technical condition of the electric drive of mining machines, which consists in monitoring the current with subsequent spectral analysis of the received signal, is considered. It allows using the ATmega16 microcontroller to determine with sufficient accuracy the current technical state of the electric drive elements. The aim of the work is to prove the possibility and justify the effectiveness of the use of microprocessor technology in the mining industry to automate the diagnosis of machinery units. The adequacy of the developed methodology for determining the identification frequencies is confirmed by experimental data in the low-frequency region of the spectrum. The conclusion of this article is that a comparative analysis of the calculated and experimentally obtained amplitude-frequency characteristics of individual components of the drive motor and elements of the transmission of the executing body of the KP21 tunnelling machine has confirmed their adequacy.

Keywords: electric drive of a tunneling machine, automated diagnostics and control, current monitoring, spectral analysis, increased reliability of tunneling equipment

The paper discusses the problem of building a unified system for a metallurgical enterprise that integrates heterogeneous information systems of various purposes, such as Computerized Information Systems (CIS), Manufacturing Execution Systems (MES), Enterprise Resource Planning (ERP), and Process Automation Systems (PAS). Data exchange with various automated systems of the enterprise is carried out by a special Data Exchange Module with Automated Systems of the Enterprise (DEMAS), which is implemented as a web service. DEMAS aims to ensure guaranteed information exchange between information systems and store information in a single data repository.

Keywords: information system, engineering process, metallurgical company, integration, web-service