it is known that the human body consists of water, proteins, minerals and adipose tissue, the sum of which is body weight. An important condition for maintaining health is the balance of the main components found in the internal organs of a person. Currently, the development of modern technologies allows you to find out the exact composition of your body, as well as internal organs, without complicated analyzes, using special devices that are based on measuring the bioimpedance of living tissue. Absolutely all tissues can conduct electric current, while the more water in the tissues, the more electrical conductivity and less resistance., The opposite is also true. Bioimpedance analysis measures the reactance of parts of the human body at different frequencies. On the basis of which the characteristics of the composition of the body or internal organs are calculated. Meanwhile, the measurement of the impedance of a person or his internal organs is associated with certain problems. So distorting factors can be the position of a person in space, improperly prepared areas of the body from which data are taken, improper placement of electrodes, poor contact. The aim of this work was to construct a regression model of a device for measuring the impedance of a biological object (BO), reflecting the contribution of the BO impedance to the total impedance of the entire measurement section.

Keywords: distributed information processing system, self-similar flow, average response time of the system, simulation, object-oriented concept, agent-based and discrete-event modeling

Noise in training samples, the main part of which is made up of outliers and novelty, is considered. The analysis of the main causes of outliers in training samples is given. The essence of the main existing approaches to determining outliers in training samples is considered. Based on the use of the nearest neighbors method, a modified method for comparing generalized distances from objects to classes is proposed. For the main types of metrics used in the spaces of feature values, the justified values ​​of the safety factors used in this technique are found. For a programmatic assessment of the quality of the training sample and a reasonable choice of the method for correcting outliers, it is proposed to use the permissible fractions of corrected and removed outliers in it. An algorithm for analyzing the presence of outliers in a set of training examples is given. An estimate of the complexity of the algorithm by the length of the input of the problem is given. An algorithm for evaluating and correcting training samples has been developed.

Keywords: classification problem, classifier, decision function, training sample, precedent, erroneous data, analysis, correction, artificial intelligence, compactness hypothesis, novelty, learningg

The paper describes the main agents, with their components and process diagrams, of the developed simulation model of the functioning of the distributed information processing system, created in the AnyLogic software environment. A method for constructing models with self-similar traffic is described. The article also presents a method for obtaining real (reference) indicators of the average response time of the system to user requests. The results of numerical experiments on the created models of the functioning of distributed information processing systems with self-similar traffic are presented. The main conclusions about the performed experiments are presented.

Keywords: distributed information processing system, self-similar flow, average system response time, simulation, object-oriented concept, agent-based and discrete-event modeling

The paper presents information about the features of the fire and their consequences in rural settlements. It is noted that the overwhelming majority of residential buildings are concentrated in rural areas of the socio-economic system. Have been determined the factors determining the fire situation in the residential sector of rural settlements of the socio-economic system. The analysis showed that the situation with fires and their consequences in rural areas can be solved through intensive implementation of organizational and management measures.

Keywords: fire, rural locations, peculiarities of living people, fire hazard, socio-economic systems, factors

A number of risks arise in the course of the implementation of an investment and construction project for civil facilities. These risks are associated primarily with the specifics of the design of engineering systems, organizational and technological solutions, the nature of the interaction on the environment and development, architectural and construction features, the requirements of civil protection of an emergency and fire safety. It was decided to conduct an expert survey to determine the weight of the factors. The research determined the minimum number of experts, conducted a study, selected the most significant factors of technical risks affecting the quality of the final construction product, environmental safety, reliability and safety.

Keywords: technical risk factors, expert survey, Kendall coefficient of concordance, Pearson coefficient, construction of multi-storey residential buildings

The article is devoted to the study of the features of the cinema buildings, which were built in Rostov-on-Don in the 1960s-1980s. The principles of cinema placement in the urban environment are considered and their urban planning role is established. The functional and planning features of cinemas, which were built according to standard and unique projects, are indicated. It's carried out their complex architectural and artistic analysis. As a result the characteristic features of modernist architecture are identified in the solutions of the studied cinemas.

Keywords: architecture of the 1960s-1980s, Soviet modernism, cinemas, standard projects, unique buildings, Rostov-on-Don

The relevance of experimental and theoretical studies of improving the operational efficiency of construction arbitrariness is justified. It is established that the operational efficiency of a construction site depends on many factors. In order to identify the main features of improving the operational efficiency of construction production in this study, we used a computer method of relative distribution of premises and computerized planning of relationships and layout. Some features of the system operation at increasing the operational efficiency of construction production are determined. Based on the conducted experiments, the need for further study of improving the operational efficiency of construction production is justified. Also, on the basis of a number of experiments, the influence of the operational efficiency of construction production on the economic aspect of construction was proved.

Keywords: operational efficiency, construction organization, planning, construction site, project cost, operating costs

The article is devoted to the stylistic and iconographic analysis of the relief decor of the White Church in the village of Taglan (Abkhazia) in the context of the medieval sculpture of Abkhazia, the identification of analogues of the studied reliefs in the sculpture of Georgia, Armenia, Alania, Byzantium and their dating. The scientific novelty of the article is due to the fact that a detailed study of the sculptural decoration of the White Temple with. Taglan is being undertaken for the first time, comparison with the identified analogues allows presumably dating the reliefs of the XI-XII centuries.

Keywords: medieval architecture and sculpture of Abkhazia, reliefs of the temple

The article assesses the implementation of the educational module and its potential in promoting the European principles of social development and culture at the institutional and national levels in Russia. The characteristics of the project aimed at the inclusion of a master's degree discipline in the university curricula that reveals advanced European practices in the field of energy and resource conservation are given. Analytical data and characteristics of architectural, structural and engineering solutions of modern technologies of energy-efficient, environmentally friendly types of buildings implemented in European countries are presented. Conclusions are made about the implementation of the Jean Monnet Module project at the Don State Technical University.

Keywords: education, energy saving, construction, European experience

The research on purification of hydrogen sulfide-containing gas mixtures of volatile hydrocarbons is presented. The results of laboratory tests of the technology for the oxidation of air hydrogen sulfide with electrolytic sodium hypochlorite and the technology for removing hydrogen sulfide on an electrically conductive catalyst are presented. The experiments carried out show the economic feasibility of the presented technologies.

Keywords: gas media of oil refineries, hydrogen sulfide, gas cleaning, electrochemical oxidation, electrolysis, electrically conductive catalyst

The article presents the derivation of the resolving equations for calculating centrally compressed concrete filled steel tubular columns of circular cross-section taking into account the effect of lateral compression and physical nonlinearity. When deriving the resolving equations, forced deformations are also taken into account, which may include creep deformations, shrinkage, and temperature deformations. Finally, the problem is reduced to a system of three equations with three unknowns for the contact pressure between the shell and the concrete core p and stresses along z in concrete and steel. As equations establishing the relationship between stresses and instantaneous deformations, the relations of the deformation theory of concrete plasticity by G.A. Geniev are used, in which dilatational deformations of concrete are taken into account. The developed technique is implemented in the Matlab environment and tested on the experimental data of A.I. Sagadatov. The agreement between experiment and theory is good enough. The constructed model is based on the most general relations of solid mechanics and is free of empirical coefficients.

Keywords: pipe concrete, column, physical nonlinearity, dilatation, deformation theory of plasticity, central compression, ultimate load, bearing capacity

Warehouse buildings with timber frame are widely used in agriculture. At the same time, foreign solutions are often used in the Russian Federation, for example, hangars of the "Hansen Pole Buildings" type (USA). The wooden frame of such buildings consists of plank racks, installed, as a rule, with a pitch of 2.4 meters and trusses with nodal connections on metal toothed plates. The truss pitch is 1.2 meters. The supporting structures of the covering are supported by longitudinal girders located in the upper part of the posts. In order to adapt the structure of the building to domestic standards, a hangar calculator was developed, implemented in the Microsoft Excel program. The calculator provides the ability to calculate not only posts and girders, but also braces, wall and roof girders. With the help of the calculator, the structures of several warehouse buildings have been calculated and buildings have beeh built.

Keywords: timber, warehouse building, calculator, metal toothed plates

The issues of unification of metal truss trusses are considered, the results of comparison of technical and economic indicators are presented, the cost of unified and non-unified trusses is determined. Metal truss trusses are lattice structures consisting of individual rods. The design of such trusses consists in determining the forces in the rods, followed by the selection of their cross sections. In this situation, we are dealing with a large number of parts and standard sizes of sections. All this leads to an increase in the labor intensity and cost of manufacturing farms. In order to reduce these indicators, after selecting the sections, the elements of the farm are unified. For this purpose, the entire upper and lower belts are usually made of one larger section, which reduces the number of main parts. For the convenience of manufacturing trusses (reducing the number of standard sizes of rolled metal ordered by the plant), all other grid sections are reduced to 2-3 sizes. Naturally, such unification leads to an increase in the mass of the entire farm and the cost of all rolled metal used.

Keywords: truss, unification, seriality, cost, installation

This article presents the results of work on environmental monitoring of the waste disposal facility - a landfill located in the Voroshilovsky district of the city of Volgograd. The data on the territorial and natural features of the research site, such as location, landscape, flora and fauna, are described. The results of the study of soil samples according to the criteria of biological, toxicological and chemical pollution are presented. The question is raised about the possibility of reclamation work using a sorbent based on natural mineral-organic substances, the effectiveness of the sorbent in reducing the hazard class of contaminated soil is shown.

Keywords: production and consumption waste, environmental monitoring, landfill, soil pollution, soil reclamation

The article discusses the need for a cost examination in the implementation of investment activities of renovated objects. The article is devoted to the actual problem of renovation of real estate objects. The key stages of technical expertise and methods for assessing the technical condition are investigated to determine the cost indicators of the renovated object. The article is devoted to a comprehensive study of the factor space, which is formed by technical and geo-economic factors and has a significant impact on the cost indicators of an investment renovation project. The article deals with the problem of determining the investment attractiveness and economic efficiency of renovation. The scientific novelty of the work lies in a comprehensive study of the factor space and cost indicators of the renovated object to determine its investment attractiveness.

Keywords: renovation, cost expertise, cost indicators, investment attractiveness, geo-economic and technical factors

The article discusses the methods and ways of protecting the environment by cleaning the exhaust gases of power plants, using the effect of vibration turbulization. The advantages of using jet devices over the use of vibration technology in eco-protective installations are theoretically substantiated.

Keywords: vibration turbulization, environmental protection technologies, energy efficiency

The article discusses the possibility of extracting bitumen from waste roofing and waterproofing materials. The main solvents are kerosene, carbon tetrachloride and chloroform. After the dissolution of materials in organic media, linear dependences of the amount of extracted bitumen on the temperature rise were established. The results obtained reflect the efficiency of using all considered organic solvents, the most active of which is carbon tetrachloride.

Keywords: bitumen, extraction, roofing and waterproofing materials, waste, solvents, extraction

A study of the quality of drinking water (spring and centralized water supply) was conducted. Determination of water hardness and alkalinity was carried out by titrimetric analysis methods in a chemical laboratory. The dependence of these parameters in the autumn and spring period is established. The limits of changes in water hardness values are 3.4-9.9 mmol / l in autumn, 3.2-9.8 mmol / l in spring. Most of the studied natural waters are of medium hardness and hard water, therefore, there is a need for water softening. The limits of change in the alkalinity of water are 0.6 - 5.1 mmol / l in autumn, 0.8-5.3 mmol / l in spring. The alkalinity values of all samples are within the limits of the MPC norms. A comparative analysis of the results of the study is carried out, which establishes the dependence of the hardness and alkalinity of water in different seasons. The values of water hardness decrease during the flood, while the values of alkalinity increase during this period. It is recommended to conduct further research in order to determine the feasibility of using water softening methods for objects where water has high hardness values, and to choose the optimal softening methods.

Keywords: alkalinity, hardness, methods of titrimetric analysis, natural water, softening, autumn period, spring period

In modern times due to the growth of mass production of electronic devices, it becomes necessary to quickly and accurately verify their characteristics. At the same time, device testing, as a rule, includes a set of different types of checks performed at different stages of the production process. In particular, the analog signature analysis method is used for these purposes. It allows you to quickly detect faults at the component level, which makes it useful in various stages of production, such as incoming inspection, testing printed circuit boards or repairing faulty devices. This article discusses the basic principles of the method, as well as the features of its application.

Keywords: analog signature analysis, component level testing, current-voltage characteristic, fault localization

The results of a study of the influence of slags from various manufacturers on the spreadability, strength and shrinkage of self-compacting fine-grained concrete are presented. It was found that replacing up to 30% of cement with slag reduces the strength of concrete only in the initial period of hardening. It was shown that the use of slag can significantly reduce the shrinkage of concrete.

Keywords: granulated blast furnace slag, mineral additive, fine-grained concrete, self-compacting concrete, mixture flow, strength, shrinkage

The article presents the results of experimental studies of microclimate parameters (temperature, intensity of thermal radiation) at the area of an arc steelmaking furnace, on the basis of which the adequacy of mathematical models of heat transfer implemented in the ANSYS software package is confirmed. Mathematical models of heat transfer are represented by the discrete ordinate model (DO), which most accurately describes the transfer of radiative heat in space, and the Shear Stress Transport (SST) turbulence model. The use of these mathematical models will make it possible to pre-evaluate the thermal radiation situation at the projected or reconstructed objects, and also will allow you to choose effective means of thermal protection in advance.

Keywords: arc steelmaking furnace, mathematical models, experimental studies, heat transfer, temperature, intensity of thermal irradiation

The possibilities of using the graphic editor AutoCAD in the formation of the readiness of graduates of a technical university for graphic activity are considered. Examples of solving educational problems in the main sections of the discipline "Engineering and Computer Graphics" are given: projection, mechanical engineering and construction drawing.

Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production

The results of the development of a sensory subsystem of an ophthalmopneumatic gas tonometer designed to measure intraocular pressure, study the anterior ciliary arteries and measure indicators are presented. After identifying the design features of the device, a structural diagram, an electrical diagram of the subsystem was proposed, a three-dimensional model of the device was made, and the technical characteristics of individual elements were considered. Brief conclusions on the work done are given, as well as the prospects for the development of the project.

Keywords: ophthalmopneumovasotonometer, intraocular pressure, pneumatic system, sensors, range finders, video cameras