An integrated information-measuring system is presented, which includes: a personal computer, special software, a set of sensors, an analog-to-digital and digital-to-analog converter, which makes it possible to investigate corrosion processes. Some possibilities of using modern information technologies in the workshop on physics and electrochemistry are shown. An experiment was carried out to study metal corrosion and its suppression using a traditional installation and a modified one using modern information technologies.

Keywords: software package, metal corrosion, natural experiment, integrated system, information technology

This article discusses the problems of determining the road surface for automatic control of a vehicle using an artificial neural network. The current state of the industry is described, as well as the relevance of these studies. Describes the input data for determining the road surface. The idea of the applicability of the image segmentation method for determining the road surface is substantiated. The structure of an artificial neural network based on the U-NET architecture is being formed. In particular, the structure of the sequence of layers is described. Particular attention is paid to the mathematical modeling of the convolution process and the maximum pool. A mathematical model of the learning process of an artificial neural network, as well as activation functions: linear functions and sigmoids, is given. An algorithm for forming an artificial neural network model is proposed. The learning process of this function is visualized on the graph. The result of the training is presented.

Keywords: artificial neural networks, UNET, data analysis,, machine learning, deep lerning, convolutional neural networks, convolution, maximum pool, image segmentation, modeling

The ever-increasing number of vehicles creates a heavy load on the transport network of cities. One of the ways to solve this problem is to develop methods for controlling traffic under existing constraints. The first developments in adaptive transport management began to appear in the mid-eighties of the last century. They were able to positively influence the transport situation of cities and regions. Each of the adaptive control methods has passed a fairly long period before being directly applied, undergoing constant changes and improvements. As a result, systems built on the basis of these methods are being implemented and are still functioning. In order to simplify the processes of development, operation, maintenance and scalability of adaptive transport control systems, to implement the principles of active management to increase the flexibility of such systems in the design and application, a method has been developed for building distributed traffic control systems that allows you to design a system from ready-made blocks and implement it according to the principle plug and play.

Keywords: traffic control, adaptive control, distributed control system, traffic, IEC 61499, plug and play

The article analyzes the experience of creating and testing a professional development program in the field of manufacturing products from micro-and nanopowders. The program is aimed at solving the problem of the qualification deficit experienced by powder metallurgy enterprises, which has become more acute in recent years The educational program was developed by the Volga State Technological University with the support of the RUSNANO Foundation for Infrastructure and Educational Programs and is designed to train engineering personnel in three areas: process engineers who develop technological processes for the production of powder products, design engineers - developers of technological equipment and production personnel who organize and control the production of metal powder products. A special feature of the program is its modular structure, which allows students to choose an individual learning path. The program includes a general professional cycle and three professional modules, the development of which allows you to form the professional competencies required by specialists. One of the modules is implemented remotely using e-learning technology. The advantage of the program is also a focus on practice: it provides a large volume of laboratory and practical classes, as well as practice at specialized enterprises. To assess the effectiveness of the advanced training program and if necessary to adjust it, the program was tested on a pilot group of students. Testing of the program confirmed its effectiveness and the possibility of successful use for professional development of specialists involved in the development and implementation of processes for obtaining products from metal powders.

Keywords: educational program of advanced training, production of powder metallurgy products from micro-and nanopowders, modular structure, distance learning, electronic training course, practice orientation, qualification deficits

This article considers one of the parts of the development of the input control device for film capacitors. Structural and functional schemes have been developed. The results of modeling the measuring circuit in the Microcap software package are presented. The results of the model experiment confirm the correctness of the calculations.

Keywords: input control, film capacitors, Arduino, Microcap, diagnostics

The aim of the study is to develop an "evolutionary model" of a transport interchange complex (TIC) - as a kind of ”growth point" of an aeropolis. Methods of “prognostic” and “structural-morphological” modeling of TIC are used for reasonable planning of the growth and development of the aeropolis. Five intermediate architectural and typological models of the transport and transfer complex have been identified: 1) bus station; 2) bus station with logistics center; 3) intermodal complex station; 4) transport and business center; 5) transport and public complex. Its "structural and morphological units", which include: a) functional components; b) structural and tectonic "units"; c) communication "framework"; d) elements of the growth of the aeropolis. A similar diachronic (developing) model of a transport interchange complex ensures its phased planning, optimal functional zoning of the facility for each intermediate phase, which will allow it to be self-sufficient at the early stages of operation. architecture.

Keywords: architecture, shaping, functioning, spatial development, transport interchange complex, transport interchange hub, transport infrastructure, aeropolis, model, structural and morphological approach, social and business center

This article addresses a number of issues related to the environmental friendliness of motor vehicles. Modern trends in the transition of the market to electric vehicles, and the problem of recycling and recycling of electric vehicle elements are considered. It was revealed that the transition from cars from ICE to electric vehicles is not yet fully justified from the point of view of ecology.

Keywords: electric car, environmental safety, waste, battery, disposal, recycling

Research in the field of design of buildings and structures has shown that the level of implementation of BIM technologies in different countries is at different levels. The availability of a regulatory framework in this area, financial assistance to construction organizations during the transition to BIM modeling contribute to raising the level. The article also provides a justification for the use of BIM technologies in ventilation systems, taking into account the requirements for these systems.

Keywords: BIM modeling, ventilation systems, 3D design, Autodesk Revit, implementation levels, information modeling, BIM technology, regulatory and technical base

This article is devoted to the study of indoor air quality in a higher education institution: assessment of the distribution patterns of suspended solids by equivalent diameters (RM0.5, RM1, RM2.5, RM5 and RM10).

Keywords: indoor air, indoor air quality, air pollution, dust, solid suspended particles, PM2.5, PM10

Modern trends of the concretes studies have been considered. Properties of the materials and additives used have been cited. There has been undertaken designing an experiment on a complex modifying additive application for a fine fibre-reinforced fine-sand cocrete. The results of the studies undertaken have been analyzed with regard to their statistical significance. On the bases of the reseach results there have been acquired regression equations for objective functions responses, namely ultimate strength on both compression and bending, and average density of fine fibre-reinforced concrete. There have been produced contour plots and those of response function surface - ultimate strength under compression for all combinations of the both factors. There have been determined the composition of the modifying additive, which ensures maximal strength properties for fine fibre-reinforced fine-sand concrete.

Keywords: fine concrete, complex additive, designing an experiment, strength, regression equation, plots of response function surface

The article is devoted to the issue of improving devices for cleaning gas station emissions from hydrocarbon vapors to improve the environmental safety of zones and territories of residential development. The largest part of the release of gasoline vapors entering the local aspiration systems is associated with the filling and emptying of fuel storage tanks at gas stations. It is known that emissions of benzene vapors belonging to the second hazard class have a significant problem in terms of exceeding the maximum permissible concentrations at the boundaries of the sanitary protection zones of gas stations and nearby residential buildings. Creation of new highly efficient technologies and devices for reducing the volume of pollutant emissions from gas filling complexes, while reducing operating costs by the amount of emissions and waste generated, developing reliable gas trapping devices of acceptable low material and energy consumption for gas station aspiration schemes is an urgent task. Another reason of elaborations’ needs of those gas trapping devices are reducing operating costs and environmental payments for emissions and waste. It was carried out environmental – economic research to verify justification to use absorption-type apparatuses within an absorbent mixture of sodium-magnesium salt’s solution (bischofite solution) and waste water of from a local purification device. It was allowed reducing emissions from sources of gas station aspiration schemes using capturing gasoline hydrocarbon vapors by mention above apparatus. It is essential reducing negative emissions’ impact of harmful substances and an additional amount of generated waste of gas stations. There are presented the results of calculating volume of the fees’ environmental damage, and economic efficiency of the use the proposed type of sorbent’ apparatus in this article also. The use of the proposed device in gas station aspiration schemes allows deceasing environmental payments for emissions including carbon taxes and fees and additional operating costs in terms of the use of consumables. The successful tests carried out have shown the reliable and efficient operation of the pilot plant with the proposed device at the gas station. The successful tests carried out have shown the reliable and efficient operation of the pilot plant set up with the proposed device that decreased environmental payments for emissions, waste and operating costs.

Keywords: gas station, gasoline, emission, atmosphere, concentration, hydrocarbons, aspiration, absorption, device, bischofite, water

Atmospheric air is the most important life-supporting natural environment that has developed during the evolution of the Earth. The results of environmental studies, both in Russia and abroad, indicate that pollution of the surface atmosphere is the most powerful, constantly acting factor of impact on humans, the food chain and the environment. In this regard, the urgency of the deterioration of the ecology of the surface environment in modern cities has increased disproportionately. The development of modern cities, caused by the need to improve the living environment, contributes to the creation of new buildings and structures, the development of transport and engineering infrastructure. As a result, the density of urban development and the congestion of transport networks increase, which leads to environmental pollution and complicates the ecological situation in cities. The article analyzes the ecology of the largest cities in Russia using the example of the city of St. Petersburg and assesses the aerodynamics of urban space. Convective flows occurring in the urban space are identified as one of the important factors in improving the ecology of the urban environment. The analysis of such factors as harmful emissions from vehicles and disturbed due to dense development of air exchange in urban areas, affecting the ecology of urban space.

Keywords: ecology, aerodynamics, air exchange, air pollution, transport infrastructure, high-rise building, urban development, aeration, energy consumption

The condition of a metal cylindrical mesh shell with external horizontal trusses is investigated. The basic principles of forming the structure are considered, taking into account the use of a support rib to align the faces of a mesh surface. The analysis of important force factors and deformation parameters of the reinforced shell is carried out taking into account all possible combinations of loads. The regularities of the system operation are determined and the influence of the location of the support trusses on the behavior of the structure is estimated. Vulnerable areas with maximum longitudinal forces in the elements and the greatest displacements of nodes were identified. An increase in stiffness outside the shell plane in the transverse direction was obtained and a positive redistribution of forces over the surface was recorded. An acceptable result was established from the point of view of ensuring the stability of the structure and the increased resistance of the shell to deformation was noted.

Keywords: cylindrical mesh shell, side elements, horizontal trusses, design parameters, forces, displacements

The issues of optimization of ribbed reinforced concrete slabs with prestressing of reinforcement, taking into account geometric, strength and cost indicators, are considered. The study was car-ried out on the basis of an analysis of the sales market for building materials, the basics of rein-forced concrete resistance and the provisions of regulatory documents, design activities in the Russian Federation, as well as the works of domestic and foreign scientists. The research method is structural-analytical analysis taking into account the relationships of the factors under study. Analytical and graphic materials are presented, revealing the regularities between the geometric dimensions and the cost of components. The proposed method for determining the efficiency of a structure, taking into account the cost indicators of materials, indicates the feasibility of its ap-plication in design practice. Recommendations for design are given to ensure that structures of the minimum cost are obtained and that meet the requirements of strength and durability.

Keywords: reinforced concrete, strength, structure, reinforcement, diameter, price, cost, efficiency, dimen-sions, analysis, element

The paper presents the results of a study aimed at selecting a safe depth of an underground collector. In the scientific and normative literature there are no specific recommendations for the depth of tunneling through the existing highways. There are only recommendations for tunneling through railway embankments. Purpose of this study: scientifically substantiated recommendations for the use of reinforced concrete pipes as collector cases. The decision of problems for achievement of the objective will be carried out by means of numerical experiment - a method of finite elements.

Keywords: reinforced concrete case, underground collector, safe depth, mathematical modeling, case structures, highway, closed method of work, trenchless laying, finite element method, subsidence trough

Over the past two years, during the pandemic, there has been an increased interest of the population in suburban real estate. However, there are a number of problems that a potential buyer faces. The main thing is to indicate the need for transformations, to propose solutions for the further development of the segment of individual houses, the concept of an affordable and comfortable modern village.

Keywords: mortgage, frame house, modern village, individual housing construction, configurator, infrastructure, modern construction technologies, Barnhouse

A method of selecting admixtures for the production of dry building mixes is proposed based on the results of an expert assessment of the complex indicator of the workability of application (connectivity, continuity when pulling with a toothed trowel, elasticity, quality of rollers) on a 100-point scale and the strength of adhesion to the concrete base, followed by the calculation of the specific cost of admixtures in the mixture per ton of products, respectively, by one point of workability of application and 1 MPa of adhesion strength, developed as a result of studies of adhesive mixtures made using 4 different cements, 5 water-retaining additives and 12 redispersible polymer powders. The possibility of obtaining adhesive compositions of adhesion class C 2 using redispersible polymer powders of domestic production is shown.

Keywords: dry building mix, adhesion strength to the base, unit cost, processability of application

The use of metal structures as load-bearing elements of building frames is incredibly extensive. They are used in all areas, from the construction of bridges to the construction of airports and other equally important facilities. Based on this, it is necessary to design such structures extremely accurately, take into account all possible effects on the elements of the building and lay the necessary safety margins. In turn, fire, as one of the extraordinary loads, must be investigated in all its aspects. From the study of the development of a fire, to the structural analysis of elements exposed to fire. This article is devoted to determining the fire resistance of steel beams by two approaches - analytical and numerical, as well as comparing the results. After testing the beam with two methods, it was concluded that the maximum value of the deflection rate in the analysis is 32.6 mm/min, which exceeds the limit value. Since only one limit condition is exceeded, the beam is considered to meet the R30 fire resistance requirement. To increase the fire resistance of the structure, it is necessary to apply various methods of protecting the beam section.

Keywords: metal structures, load-bearing element, extreme load, structural analysis, fire impact, fire resistance

In this article, the object of study is a research drying chamber of a convective type, in the design of which a condensing heat exchanger based on a vapor-compression heat pump is introduced. The drying process of lumber refers to energy-intensive technologies, since the share of drying in the cost of finished materials reaches 50% [1]. In the presented experimental study, comparative results of two operating modes of the experimental installation are presented: standard (soft mode) and recirculation mode with a condensate dryer. The obtained experimental drying curves show that the cost of electrical energy, taking into account the option with a condensing heat exchanger, decreased by 7.75% compared to the standard.

Keywords: drying modes, drying, heat pump unit, heat recovery unit, material balance, heat balance, moisture content, heat consumption, experimental setup

The construction industry is developing dynamically today. Monolithic reinforced concrete frame is the most common construction of modern buildings. There are the following advantages of monolithic construction technology: the speed of construction; the possibility of building enclosing structures using a combination of various building materials; architectural expressiveness of buildings and others. However, a number of problems cannot be ruled out. The solution of these problems is relevant when accelerating the pace of construction and improving the quality of construction and installation work. One of them is the problem of concrete strength gain in winter production conditions.

Keywords: winter concreting, concrete heating methods, heat treatment parameters, modeling of concrete heating conditions, concrete heating process control

The factors influencing the process of flocculation during aeration are analyzed. It is determined that the effect is due to the damping of small-scale pulsations of water during mixing, accelerated formation of nuclei of solid phases of coagulant hydrolysis products on the surface of air bubbles due to electrostatic and surface forces, as well as the release of excess amounts of carbon dioxide from the water. Theoretical dependences have been obtained showing that the dose of coagulant injected into the mixer with simultaneous aeration of water is proportional to the concentration of heterophase impurities and inversely proportional to the average particle size of contaminants, the gas saturation of the resulting water-air mixture and the velocity gradient.

Keywords: natural water, coagulant, mixer, aeration, coagulant dose, velocity gradient

The article considers the possibility of optimizing the composition of the reinforcement link when installing the reinforcement frame of vertical monolithic structures. Various variants of the composition of the reinforcement link are considered, depending on the options for connecting reinforcement rods in vertical monolithic structures (binding of the reinforcement frame with a knitting hook, with an automated gun and with a coupling connection). The data for the calculation were obtained by the method of timekeeping of the reinforcement works considered in the article. Based on the conducted timekeeping and the construction of a mathematical model, the optimal composition of rebar workers was determined when performing reinforcement work.

Keywords: timing, mathematical model, optimization, connection of reinforcing bars, link composition, reinforcing bars, monolithic structures, dependency graph, labor intensity, minimum numerical composition of the link, qualification composition of the link

The paper justifies the relevance and reviews the issues of energy efficient reconstruction of a construction system at various lifecycle stages, underlining that reconstruction needs to be viewed as a separate phase of the property lifecycle. Despite the fact that construction systems are static, all lifecycle stages are dynamic and require complex control. The diagrams are provided to show the building’s lifecycle and the process of stagewise supervision of energy efficient reconstruction by the client.

Keywords: lifecycle, stage, phase, target system, process layout/structure, performance monitoring

The article presents the results of comparative tests of samples of connections of wooden elements from glued wood on metal linings using screwed and glued screws, 3 samples of each of 5 types of connections (one glueless and four varieties of glued screwed connection). It has been established that the use of epoxy adhesives increases the strength characteristics of the adhesive-free joint by the criterion of breaking load by 1.46, 1.78, 1.70, 1.59 times, by the criterion of the elastic work of the joint by 1.56, 1.56, 1.82, 1.30 times for glued joints (ED-20 + PEPA, ED -20 + THETA, DER-331 + PEPA, DER-331 + THETA) respectively. Of the glued-in samples, the deformation Dult=2mm was achieved only by samples No. 8 (ED-20 + TETA) and No. 14 (DER-331 + TETA) at loads 1.77, 1.40 times greater than the load in a glueless joint. Full deformations Dp at the same load within the limits of elastic work of joints decrease by 7, 10.61, 10.61 times for glued joints (ED-20 + PEPA, ED-20 + TETA, DER-331 + PEPA), respectively. For samples of compounds (DER-331 + TETA) with a compared load value, the deformations are equal to 0.

Keywords: glued wood, metal linings, testing of joint samples, bearing capacity of the joint, deformability of the joint, upper limit of the elastic work region (URL), total deformation, permanent deformation, elastic deformation, safety factor