Currently, in the design and manufacture of steel products operating in conditions of heavy impact-abrasive wear, not only material is given, but also the structure of the product itself. One such detail is the friction wedge of a freight wagon trolley. In the presented work, a new design of the friction wedge of the vibration damping unit is presented; technical calculations are carried out on the strength of the presented design. The safety factors of spring suspension are calculated. All calculations were performed according to the standards for the calculation and design of new and modernized railroad cars of the Ministry of Railways 1520 mm gauge. The performed calculations indicate the high performance of the developed design, the obtained values ​​fully satisfy the requirements for such products. The result of the work on creating a new design of the friction wedge of the vibration damping unit is to obtain a patent for utility model No. 194823, a drawing has also been developed (KI-000.00.00.001) and terms of reference for experimental design work (KI-000.00.00.001 TK).

Keywords: friction wedge, vibration damping unit, freight car truck, strength, reliability, durability, calculation of spring suspension, static deflection of spring suspension, coefficient of structural margin of deflection, coefficient of relative friction

Information models are successfully used in construction when developing archi-tectural and planning solutions, as well as when performing building elements cal-culations. Information models of organization processes and construction produc-tion technologies have not found their place in the system of BIM technologies. In this regard, the formation of approaches to the construction of information models of the processes of construction of buildings and structures should be attributed to the current issues of construction science. The main focus of the work is on the discrepancy between the processes of scheduling and determining the estimated cost in the process of preparing project documentation for construction. The pur-pose of the work was to develop the principles of building an information model for the formation of Executive documentation established by the legislation of the Russian Federation for the construction of capital construction projects. In the process of achieving the goal, the author solved the problems of systematization of problems of organizational and technological design and formulated the principles of building information models describing the process of construction of structures of buildings and structures, which are used for forming acceptance certificates. As a result of the research, the author comes to the conclusion that it is necessary to introduce the codes of the classifier of construction resources into the practice of organizational and technological design and estimate calculations. At the same time, codes of the classifier of construction resources should be applied at the stage of development of architectural planning and design solutions.

Keywords: information model, construction process, organizational and technological design, building resource classification codes, reporting documentation in construction, work log, calendar plan, network plan

Organizational conflicts are a natural and integral part of any process. In modern control theory, it is proposed to use various adaptive control structures to solve such problems, in particular, with reference or configurable models in the control loop. A cognitive model of adaptive management of organizational conflicts with a configurable model in the management loop is considered. Embedding the model in the control loop allows you to integrate information about the dynamics of process characteristics. Based on information processing, a variant of controls for de-escalation of the conflict is proposed. The model in the organizational conflict management loop is essentially an intelligent conflict situation analyzer. It presents options based on the accumulated and processed information within the framework of known precedents for their solution. The core of such analyzers is a simulation model based on the system dynamics paradigm. The built simulation model allows you to evaluate and predict the impact of factors, ways to stabilize and manage organizational conflicts, taking into account the main parameters. In accordance with the concept of adaptive management, the model can be configured for the current values of the conflict situation parameters and, in accordance with the already tested options, can offer management in a specific situation. The use of the system dynamics paradigm in the model for building an effective forecast is focused on the strategic level of management.

Keywords: cognitive model, simulation model, conflict, escalation, contour, management, de-escalation, organization

The article considers examples of cities with a linear-elongated configuration. Issues of air pollution are considered, examples of components of pollutants coming from stationary and mobile sources are given. Statistical data on human diseases in the Volgograd region for the period 2008-2017 are presented. Considers the issues of monitoring for the city of Volgograd.

Keywords: linear city, highway, pollution, carbon monoxide, monitoring, monitoring posts, disease statistics, combined action, vehicles, noise, gas pollution, health, exhaust gases, length

A method for increasing the production efficiency of ultra-lightweight refractory products is proposed, by optimizing the technology for preparing foam, which allows to release the products from the forms immediately after they are installed for drying. The plastic-viscous characteristics and stability of the foam can be increased by its mineralization, i.e. by introducing fine mineral substances into the foam-forming solution

Keywords: foam mass, mineralization, ultimate shear stress, plastic-viscous characteristics, ultra-light refractories, aluminum-potassium alum

The article provides a brief overview of geomechanical methods for studying the stress-strain state of the soil mass and tunnel lining. The organization of monitoring in tunnels using conventional and fiber-optic systems is considered. Criteria for analysis of monitoring data and structural strength conditions are described

Keywords: railway tunnel, construction, operation, monitoring, strain gauge, stress, strain, strength, bearing capacity

The article is devoted to the use of natural minerals in water treatment. The paper presents the results of a study of the sorption properties of the opoka. The study showed the advantages of flask membranes compared to those deposited with silicic acid. The optimal conditions for the modification of the flask were determined, which make it possible to purify water from metal impurities to the required level.

Keywords: groundwater, water purification, deferrization, membrane, deposited membrane, sorption methods, flask, polyacrylamide

the article describes a variant of setting sequential algorithms in the form of bipartite graphs by further defining them, which makes it possible to work with algorithms using graph theory methods in the future. Two forms of the task are considered: modular and functional-predicative. The possibility of setting the algorithm in table-predicate form is shown. It is concluded that in addition to the generally accepted methods of setting the algorithm, it can be set in matrix-predicate or table-predicate form, which allows using methods of matrix theory and methods of predicate theory when working with algorithms. setting the algorithm in matrix-predicate form avoids isomorphism when performing algebraic and set-theoretic operations on it.; setting algorithms in matrix-predicate form allows you to perform almost any operations on them

Keywords: graph-algorithm scheme, sequential algorithm, predicative block, functional block, pre-definition, bipartite graph, table-predicative form, graph theory, isomorphism

There is an analysis of the urban development location and the capacity of public spaces for cultural and educational purposes was carried out using the example of cultural centres for Volgograd. The normative and actual material security is determined separately for each administrative district and whole sity. There are suggestions on the advisability of erecting new cultural objects.Dynamics of modern cities is taking into account.

Keywords: planning, cultural centre, cultural and social structure, standard of material security, actual material security

One of the most pressing problems in the oil and gas industry is numerous pipeline accidents that require innovative solutions. This article analyzes a promising method of repair using composite couplings, which include many advantages compared to steel structures. The strength characteristics of the couplings are also given and their installation process is described.

Keywords: Oil pipeline, overhaul, reinforcing composite coupling, composite materials

The paper is based on a review of the scientific publications released from May through October 2019, the greater part of which, namely 14 papers, is included in the Web of Science scientometric database. The authors of the papers analyzed explore the construction industry problems over the past 5 years. The foreign studies listed in the reference section were based on the analysis of reviews falling in the above-mentioned timeline. The purpose of this paper is to identify the problems hindering the implementation of BIM technologies in the construction sector, not only in the foreign countries, but also in Russia.

Keywords: building information modeling, construction organizations, critical problems, external factors, absence of organizational support

The calculation algorithm is given and various options for solving the problem are considered when changing the parameters of the design scheme of the rod system on the example of a beam in the MS Excel software environment together with the MathCAD package. The proposed approach allows you to combine formulas, graphics, and calculation results on a single sheet, which is especially useful in the educational process. It contributes to a more conscious perception of the calculation process by students, allows them to implement various forms of distance learning in information technologies.

Keywords: the core of the system, algorithm, modelling, integration, information technology

The authors of the article consider external socio-economic and internal motivational factors in the formation of reproductive behavior of young families living in the Rostov region. Based on empirical data, the authors of the work conclude that young spouses occupy quite active economic positions in the region we are studying. These professional strategies have a dual effect on reproductive behavior, determining the choice of one-child family model in the region

Keywords: model, cognitive analysis, family, young family, life strategies, value orientations reproductive behavior

The directions of modern research in the field of adaptive error correction, which can be applied when transmitting images in JPEG 2000 format over a noisy channel, are examined. Adaptive correction at the network level allows you to maintain a given percentage of packet delivery. Uneven protection at the application level is intended for use in broadcast broadcasts and allows the consumer to receive an image of various quality depending on the state of the network. Adaptive uniform protection at the application level is focused on point-to-point transmission and is aimed at receiving the maximum image quality by the receiver. The network layer tools discussed can be combined with the application layer tools.

Keywords: adaptation, noise-proof coding, forward error correction, noisy channel, JPEG 2000

To assess the impact of various groups of sources of emissions in urban pollution, there is a method that can be called the main one - the assessment of the contribution to total gross emissions. But this method does not take into account the significant features of dispersion of pollutant emissions in the atmosphere, as well as the specifics of the mechanisms of formation of concentrations of pollutants at a specific point in the city and the calculation of complex indicators of the level of air pollution in urban areas. The authors proposed a procedure for calculating the atmospheric pollution index for source groups using the “summary calculations” tool. The calculations were carried out on the licensed software product "Ecologist-city". Based on the calculations, conclusions were drawn on the reliability of determining the influence of various groups of emission sources on air pollution in the city of Krasnoyarsk, based on the assessment of contributions to the total gross emission in the city.

Keywords: atmosphere, air, ecology, ecology of urban areas, environmental safety, summary calculations, IZA