the article presents a comparison of methods for modeling the Foundation of the span structure of the technological transition on permafrost soils in the LIRA-CAD 2015 software package.Numerical simulations using methods such as pinching (linking) and modeling of pile Foundation and soil Foundation showed a significant difference in the calculated values. The conducted research confirms the need to calculate this type of building structures taking into account the influence of the soil base.

Keywords: span structure, technological transition, pile, base, foundation, frozen ground, LIRA-CAD 2015, strength, stiffness, stability, soil model

This article describes the stages of modeling the state control algorithm for a synchronous motor with permanent magnets using the model-based design method. The algorithm is based on the principle of field oriented I-Hz control, the constructions of which is formed as a state machine for the correct planning of tasks. The model input and output signals for the STM32 microcontroller are further classified. The control model itself is created in the Matlab/Simulink package, the subsystems of which are also described. The last step is to model and visualize the input/output signals of the system at different initial values of the inverter speed and current. By observing acceptable values of the inverter speed and current in the steady state mode, the correct operation of the control logic is ensured, which can be generated as a C code and integrated into the microcontroller.

Keywords: Model-based design, Matlab/Simulink, STM32, synchronous motor with permanent magnets, field-oriented control

The configuration of the transport network is important for the efficient operation of the transport system. It significantly affects the cost of transportation and their reliability. The construction of each individual element of the network is the implementation of a very specific solution, but the overall development of the network largely manifests internal patterns. One approach to studying such patterns is to model the natural development of the transport network. This paper proposes a formalization of various approaches to modeling the natural development of networks and identifies strict relationships between the approaches under consideration.

Keywords: transport network modeling, dynamical model, stationary model, the configuration of the transport network, transport network topology

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 article presents the usage of the semantic network for storing and retrieving information from unstructured sources. The authors describe the semantic network model based on labeled oriented graph, consider basic semantic network elements (concepts, relations and attributes) and basic relation types between elements (hyponymic and meronimic as well as class-instance relations), and define main single and group operations on the network. Besides the method of storing the concept instances and related wordforms and glosses for automated information retrieval from semi-structured sources is provided. The designed semantic network is decomposed into atomic concepts providing absence of stored information redundancy without necessity to apply the normalization procedure. The developed model was applied in several practical tasks, for example in real estate information parsing, the address information system input validation, and information extraction from spreadsheet data. The model was improved and extended based on experimental results.

Keywords: semantic network, graph model, concept, relation, attribute, instance, semi-structured data

The work is devoted to the development of experimental research technology for the emotional component of students ' attitudes towards friendship. Using a concrete example, it is shown that the previously developed method of measuring the affective component of various social attitudes makes it possible to identify the levels of emotional perception of both real and virtual friendship. It was found that just over half of the studied audience (57-59%) showed an almost neutral emotional attitude to both real and virtual friendships. Only about 29% perceive real friendship positively, and even less – 19% - virtual friendship. On the contrary, virtual friendship is negatively evaluated by 22% , while real friendship is only 14%. Thus, in the group as a whole, the attitude to real friendship is more positive than to virtual one. It is shown that this pattern is observed not only at the group level, but also at the individual level. But in the form of a trend. The results confirm the decrease in the importance of friendship noted in the literature (compared to the last century), and the emerging increase in the role of virtual interpersonal relationships.

Keywords: interpersonal relationships, friendship, virtual friendship, affective component of attitudes, semantic differential technology, nonlinear phenomenological model

The article deals with the problem of increasing the efficiency of the formation and further functioning of the organizational and technical structure. The leading factor in the formation of which is the availability of objects, with gradation by volume of work performed, purpose and type, conditions of work, which requires the choice of the method of organization of repair and construction works and planning of logistics. To solve this problem, it is proposed to develop a mechanism for managing organizational and technical structures based on the application of a program - oriented approach. This should allow you to create a system that is a continuous design with different implementation periods, regulated by the resource provision. To date, there is no unified approach to the formation of an effective organizational and technical structure. A tool for solving this problem, taking into account the features of the construction industry, is proposed.The article deals with the problem of increasing the efficiency of the formation and further functioning of the organizational and technical structure. The leading factor in the formation of which is the availability of objects, with gradation by volume of work performed, purpose and type, conditions of work, which requires the choice of the method of organization of repair and construction works and planning of logistics. To solve this problem, it is proposed to develop a mechanism for managing organizational and technical structures based on the application of a program - oriented approach. This should allow you to create a system that is a continuous design with different implementation periods, regulated by the resource provision. To date, there is no unified approach to the formation of an effective organizational and technical structure. A tool for solving this problem, taking into account the features of the construction industry, is proposed.

Keywords: Planning, major repairs, organizational and technical system, program, production support, structure, management, order method, cost, balance

The rapid development of infrastructure contributes to the development of building technologies and materials. Today, in addition to classic building materials, completely new technological composites - pultruded profiles - have appeared. These materials have a lot of advantages compared to classic materials, but this product also has a huge drawback - unstudied. To date, there are no widely accepted design standards or instructions available to practicing design engineers.As a consequence, now, most construction projects rely on manufacturers' design manuals, which are often incomplete and too cautious. The purpose of this article is to develop provisions for the calculation of structures of pultruded profiles

Keywords: pultruded profiles, stretched elements, calculation of stretched elements

The physicomechanical properties of paving slabs produced by vibropressing technology are determined. The compositions of fine-grained concrete using quartz fine-grained sands and very fine sands are proposed. The obtained results confirmed the possibility and effectiveness of the use of substandard fine-grained raw materials of the local raw material base, which ensure a reduction in the cost of production.

Keywords: fine-grained concrete, vibrocompression, raw material base, substandard sands, ground sand, active rheological matrix

The results of testing a series of 18 samples of joints for chipping along wood fibers are considered. The samples are made of glued wooden beam, intended for use as a supporting structure of the floor. To assess the strength of the adhesive joint in accordance with standard 33120-2014 “Wooden glued structures. Methods for determining the strength of joints”, statistical processing of test results was carried out, temporary shear resistance, coefficient of variation, range of variation series and the minimum probabilistic value of tensile strength were determined. Indicators are given to standard wood moisture content W = 12%. It was determined that the strength of the adhesive joint is less than the value established by current standards, by 18.5%.

Keywords: glued wood, wooden glued beams, adhesive strength, temporary chipping resistance, tensile strength, minimum probabilistic value of tensile strength, coefficient of variation, chipping during bending, standard wood wetness

Maintenance of buildings and structures is a complex of interrelated technical and organizational measures aimed at preventing premature wear and aging of certain building structures, ensuring their smooth operation throughout the service life.

Keywords: foundations and foundations, construction, buildings and structures, operation, basement walls, soil, destruction

An important problem of modern ecology is air pollution for most cities. Studies show that the largest danger to the human body is particles up to 10 microns in size, therefore, the content of suspended solids PM10 and PM2.5 (concentration) is controlled. The article presents the results of studies of air pollution with fine dust in the winter season

Keywords: dust, dispersed materials, suspended solids, PM2.5, PM10, atmosphere, air, ecology, ecology of urban areas, environmental safety

V stat`e privoditsya obzor razvitiya cifrovy`x texnologij v neftyanoj otrasli v ramkax kapital`nogo stroitel`stva i operacionnoj deyatel`nosti.

Keywords: "Permafrost soils, ground laying, aboveground laying, protective composite coating. "

In the work it is proposed to use the principle of zonal placement of materials in prefabricated-monolithic bending structures with the use of light concrete, as well as combined reinforcement. The upper (monolithic) layer is preferably made of light concrete of low strength, and the lower (prefabricated elements) - of steel fibre concrete based on light concrete of higher strength. Rod and fibre reinforcement are located in prefabricated elements, which under operating loads will be in stretched zone of bent elements.The results of experimental studies of crack resistance and deformation of steel-fibre-fluorophobetone (SFTB) prefabricated monolithic bending elements on the basis of shoe filler of Kamenskoe deposit of Kabardino-Balkan Republic are presented in the work. Based on analysis of obtained data correlation dependence is derived and character and degree of influence of various factors on crack resistance and deformability of assembled monolithic combined reinforced bending elements is revealed. The following conclusions have been drawn: reinforcement of prefabricated elements of flexable monolithic structures made of tuphobetone with rods and fibres allows to significantly increase their crack resistance; Parameters of combined reinforcement of prefabricated elements, assignment of their geometrical dimensions, as well as dimensions of sections of bent prefabricated-monolithic structures from tuphobetone as a whole can be assigned taking into account correlation dependencies for evaluation of crack resistance obtained from the results of these studies.

Keywords: Stalefibrotaphobetone, monolithic assembly, zonal arrangement, combined reinforcement, reduced reinforcement, strength of monolithic concrete, correlation dependence, crack resistance, deformability, factors, parameters of combined reinforcement

The article presents the results of a study of the deflections of a monolithic flat floor with a different grid of columns with prestressed reinforcement without adhesion to concrete. To analyze the deflections, numerical studies of slabs with different rectangular columns and thicknesses were performed. The studies were performed using the LIRA CAD software package. The aspect ratio of rectangular cells of monolithic flat floors is determined, for which the application of prestressing is ineffective on the short side of the cell or most effective on the long side. It was revealed that the use of high-strength reinforcement of the "monostrand" type is most effective for a grid of columns 5x9m from the volume of the studied cell sides. It was found that the application of post-tension on the short side of the slab cell practically does not affect the total deflection of the cell - with the aspect ratio a / b> 1.2. The conclusion is drawn about the increase in the efficiency of using contour reinforcement with an increase in the deflections that affect the amount of rope repulsion. The results can be used in the design of slabs using prestressed reinforcement without adhesion to concrete of the "monostrand" type.

Keywords: rope, high-strength reinforcement, finite element, monostrand, repulse, prestressing, post-stressing, deflection

The paper analyzes the conditions for the formation of a microclimate of urban residential area with high-rise buildings. High-rise buildings in big cities have a double influence on the living environment – on the one hand, they change wind loads, and on the other hand they affect the direction and speed of the wind. The environmentally unfavorable zones of high-rise buildings, as well as the causes and sources of pollution, such as emerging transport and engineering infrastructure due to development of high-rise housing, have been identified. In high-rise housing areas, zones with impaired air exchange, which contribute to the formation of the “heat island”, have been indicated.

Keywords: urbanization; ecology; high-rise building; urban development; heat island; ascending air flow; temperature inversion; microclimatic conditions; terrain aerodynamics; living environment

Laboratory equipment necessary for studying the fractional composition of dust in the air of an industrial enterprise and at the border of its sanitary protection zone is proposed. harmful substances, as well as determine the dispersion of dust emitted into the air. the organization and development of new products on existing production sites.

Keywords: dust, dispersion, measurement, air, laboratory, instrument, material, filter, particle, industry, concentration, sample

The article presents a program of comprehensive construction and technical expertise of the structures of an industrial building. The features of the construction and technical expertise of the structures of the agricultural warehouse of mineral fertilizers are described. An algorithm of the sequence of actions for the technical expertise of the structures of the object is developed. Measures have been developed to repair and restore the working condition of damaged structures

Keywords: construction and technical expertise, defects, bearing capacity, structural repair, property management

The analysis of the use of a private car fleet owned by a large number of owners, which was previously in the hands of a single carrier, was performed. The results of the analysis showed that there are cases when the owners of rolling stock, regardless of the carrier's capabilities, send their empty cars in the opposite direction, which reduces the carrying capacity of the railway and leads to losses. To increase the interaction between the carrier and the operator, it is proposed to create a commercial dispatch circle as part of the traffic control center of the traffic management Directorate. The dispatcher of this division provides round-the-clock control over the progress of the operator's (customer's) cars on the road polygon in accordance with the application submitted by them, from the moment of receipt at the inter-road junctions to their arrival and submission for unloading on the way of General and non-public use of consignees at the destination station. The proposed measures help to increase the productivity of cars, reduce their working fleet, operating costs and the cost of transporting goods. The efficiency of the dispatch circle is determined.

Keywords: private fleet of cars, oncoming traffic of empty cars, additional load on infrastructure, infrastructure restrictions, creation of a dispatching circle of commercial dispatching, increased interaction, efficiency of cargo transportation

The work deals with the application of fractal geometry methods to solve the problem of analysis of strength of metal materials under low-cycle fatigue loading. Materials with volume-centered and grain-centered crystal lattice, which are subjected to cyclic loading along the zero cycle, are investigated. As a criterion it is proposed to use fractal dimension determined with the help of Hurst indicator. It is reasonable that this characteristic may be used to evaluate the cyclic strength of metallic materials.

Keywords: Fatigue, metal, strength, fractals, Hurst index