The question of improvement of transportation of building structures and products is considered. The possibility of reducing losses is studied. Measures to prevent the destruction of semi-finished products during their transportation are proposed

Keywords: organization of construction; economy of construction; organization of production

The article presents the results of the development of a method for predicting trends in the development of random processes based on ordinal statistics, namely, the median and Hodges-Lehman statistics. The article discusses the proposed method in detail: it provides basic definitions, formulas for the calculation, a detailed description of the algorithm. The algorithm is implemented in the form of a software module that has practical application and can be used to solve problems of forecasting the trend of financial time series. The comparative results of applying the prediction method for the RTS index in the case of the use of the median and the Hodges-Lehmann statistics are given.

Keywords: ordinal statistics, random variable, random process, median, Hodges-Lehman statistics, forecasting, trend, mean square error, mean absolute error

This article discusses the development of measures for the protection of atmospheric air during the construction industry. Particular attention is paid to the development and implementation of MPE projects and their implementation in the construction process. Also an important factor for environmental protection, including atmospheric air is the calculation of the radius of action of the sanitary protection zone of each construction site, depending on the sources of pollution. Particular attention is paid to the allocation of fine dust on the construction site, as well as measures to reduce these emissions. The article presents the results of the implementation of certain technological and organizational measures to reduce the release of PM10 and PM2. 5 fine dust particles on one of the construction sites of Rostov-on-don.

Keywords: protection of atmospheric air, fine dust, organization of construction

The paper deals with the study of the dynamic characteristics of the coating farm. Due to the changes in the company's technological regulations, it became necessary to install additional ventilation equipment with its output to the roof of the shop. The study showed that to ensure safe operation in the structural scheme of bearing structures it is necessary to organize additional units. Dynamic load on the supporting structures is created by the operation of ventilation equipment. The spectrum of natural oscillation frequencies is determined. The values of these frequencies were compared with the frequency of forced oscillations of the fans. Graphs of the changes in natural frequencies when the fan operating frequency. According to the chart, when the frequency of the driving force coincides with the frequency of natural oscillations, the inertia forces increase sharply, which indicates the passage of the resonance zone. A study of changes in dynamic forces due to rotor imbalance was conducted. The value of the gap arising at wear of bearings at which there will be a destruction of a basic element of a farm was calculated.

Keywords: vibrations, forced vibrations, frequency, resonance, truss

The article deals with the principle of emulsion formation in mechanical absorbers, where the working body is presented in the form of a rotating cylinder. The analysis of interaction of liquids in the process of emulsion formation is made. The mutual influence of liquid layers is considered. The estimation of internal and external parameters characterizing the process of emulsion formation is obtained. The study given in the article will help in the preparation of engineering methods for calculating the operating and design parameters of devices.

Keywords: absorber, emulsion layer, viscosity, density, emulsion, surface contact area, energy dissipation, immiscible liquids, rotating cylinder, liquid

The article is devoted to the issue of improving the environmental safety of the construction industry by improving dust collectors of dust removal systems for the aspiration schemes of the construction industry/ It was proposed use additive-integrated dispersive analysis of variance of dust particles emissions throw out into the atmosphere by aspiration systems. The article proposes the improvement of complex analysis of variance using hydrodynamic criteria in output functions. Modified output data and additive-simplex allows getting approach to evaluate characteristics - equivalent sizes and speeds of sedimentation-soiling of dust particles with a higher degree of accuracy of the results. It makes possibility to determine the ranges of size’s and velocities’ changes with real ability. It is possible to obtain more reliable data of sedimentation rates and equivalent particle sizes for the studied dust samples of building materials using the distributions of the hydrodynamics criteria. Analytical approach to determining the density’ distribution of the numerical values of the hydrodynamics criteria in the output function allowed us to clarify the more real values of sedimentation rates and the equivalent particle sizes and the range of their changes both. This way analysis of variance of dispersed dust particles could call additive-complex or simplex approach. The obtained regressions in processing the research results were used in the development of devices for capturing dust of dispersed building materials from emissions. This way could significantly reduced dust leakage out from aspiration collectors of decreasing dust systems while purifying emissions at the building enterprises. This approach is one of the most effective ways to improve the environmental safety of the building industry.

Keywords: Dust, building material, dust collector, cleaning, leakage, analysis of variance, velocity, sedimentation, criterion, emission, atmosphere, dust removal, aspiration

The issue of improving the cost reduction of crane structures is considered. Results of experimental experience of the device of beams of new type are given. Methods of economy of materials at production of beams are offered

Keywords: organization of construction; economy of construction, construction of cranes and crane tracks

The question of economy of metal at production of building designs is considered. Measures for the organization of effective production in the current projects of high-rise and long-span buildings are proposed. Measures of increase of efficiency of construction are considered.

Keywords: organization of construction; economy of construction, production of building materials

Experimental verification of the existing method of analytical determination of radiation and thermal deformations of concretes and solutions on the basis of data on deformations of aggregate and cement stone for materials with low content of aggregates is carried out. The test was carried out on samples of solutions with different content of aggregate-sand based on the results of determining the size changes after heating at temperatures from 105 ° C to 400 ° C. It is shown that at the volume content of fillers less than 52% there are differences between the calculated and experimental values of changes in the size of solutions after heating. Moreover, the differences increase with the decrease in the volume content of the filler, with an increase in the heating temperature and the difference between the thermal deformations of the filler and the cement stone. The obtained results allow to correct the results of calculations using the specified existing analytical method for concretes and solutions with a filler content of less than 52%

Keywords: thermal and radiation deformations, solutions and concretes, analytical and experimental determination, filler content, microstructural stresses, cracking

The question of improvement of coatings of welded products is considered. The possibility of replacing sandblasting is being studied. The possibility of reducing the cost of welding is considered

Keywords: construction materials, reduction of construction materials costs

The article deals with the issues of dispersion of heterogeneous liquids by spray nozzles in order to divide them into components. The influence of various parameters on the size of the droplets obtained is investigated. For the mathematical description the probabilistic approach is applied, which allows to obtain a differential function of the particle size distribution, which can form the basis of the engineering method of calculation of this class of separators. An expression for determining the average value of the angular velocity of the internal flow is compiled. These dependences allow us to calculate the most probable value of the angular velocity corresponding to the decay of complex drops into secondary ones, which are the drops of the initial liquids.

Keywords: particle, emulsion, non-uniform liquid, droplets, jet, nozzle, velocity, flow, parameter, separator

The process of overcoming the risks of destruction of the life world by young spouses is studied. Methods of cognitive modeling are used. The theory of adaptive control is chosen as the basic paradigm. This allowed the study to build on the existing theoretical basis of structural analysis of adaptive systems with models in the adaptation circuit.To use the practical experience of cognitive modeling of systems with the inclusion of a person in the adaptation circuit, for example, training models based on a double feedback loop. It is proposed to use the technology of solving problems, based on the experience of past situations, namely, the technology of output based on precedents (Case-Based Reasoning, or CBR). A generalized adaptive model of reducing the risks of destruction of the life world of a young family on the basis of a double CBR – cycle is developed. The model describes the process of self-development of young spouses through continuous training in complex problem situations

Keywords: young family, life world, risk, cognitive modeling, model, precedent, adaptation

Abstract: the results of the analysis of existing and projected volumes of export cargo transportation in the freight-stressed areas of the Russian railway network to the ports of Azov-the black sea basin are Presented. It is established that the growth of traffic ahead of the development of the transport capacity of the studied railway directions. In this regard, foreign and Russian experience in the development of growing volumes of cargo transportation in terms of infrastructure constraints due to the organization of heavy train traffic has been studied. The measures of development of heavy traffic of trains are offered. The method of calculation of efficiency of the organization of heavy traffic on one of sites of the North Caucasian railroad is given.

Keywords: Key words: export transportation, perspective volumes, infrastructure restrictions, ways of elimination, efficiency of heavy traffic

This paper presents two methods of computer simulation (quantum chemical analysis and molecular dynamics) of the interaction of additives with the iron surface. Quantum chemical interaction of silicate and phosphate additives with iron surface was carried out. The plate model was used for quantum chemical analysis, calculations were carried out in the DFT approximation. The method of molecular dynamics is based on the calculation of the evolution of the system of interacting particles of atoms and molecules by integrating the equations of their motion. It is shown that the oxidation of the surface leads to a decrease in the adhesion energy of both individual additives and their combinations, allowing to find the influencing factors on the behavior of tribosystems.

Keywords: lubricant, method, quantum chemical analysis, molecular dynamics, tribology, friction, computer simulation

The article provides an overview of the methods of automatic abstracting and annotating documents. The description of classification of methods of annotation and abstracting on various criteria is presented. The algorithm of automatic annotation is described in detail, the key step of which is the transformation of all words in the text into lemmas (lemmatization). The developed program sets the upper limit of the output annotation in order to avoid receiving the abstract instead of the annotation.

Keywords: annotation, abstracting, lemmatization, algorithm, software implementation, database, text analysis