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

The work is devoted to the structural characterization of carbon nanotubes by means of electronic combination scattering of light. Samples of double-walled carbon nanotubes with various electronic configurations of the layers have been synthesized, their study has been performed by means of high-resolution transmission electron microscopy, electron diffraction, Rayleigh spectroscopy, as well as spectroscopy of combination scattering of light. The structural characterization of the synthesized nanotubes has been carried out using electronic combination scattering of light, which can play the role of an additional criteria for nanotubes indexing, helping to clarify and verify the obtained results.

Keywords: carbon nanotubes, catalytic chemical vapor deposition, spectroscopy of combination scattering of light

The work investigated the behavior of volumetric electrical conductivity (and its components) of various biological liquid media in order to determine the possibility of influencing the processes of life. In the frequency range 0-50 GHz, the following biological liquid media were studied: cold-pressed sunflower oil; sunflower oil obtained using heat treatment; fresh egg yolk and protein; Bacillus amyloliquifaciens bacteria; bacteria Escherichia coli MG1655 pXen-lux. The presence of fluctuations in the dielectric permittivity parameters, the unevenness of the frequency characteristics, in the range of 35-37 GHz, the “bursts” of values ​​characteristic of the resonance nature of this dependence were observed on the frequency characteristics of the loss angle tangents.

Keywords: biological liquid medium, dielectric constant, complex dielectric constant, loss tangent, medium conductivity, frequency response, fluctuation, frequency range, biophysical parameter

The article provides a study and calculation of the dependence of the hazardous area resulting from the operation of the flare equipment on the height of the flare at which service equipment and personnel can operate

Keywords: flare unit, radiation intensity, safe operation zone, thermal voltage

The article considers the results of development of water treatment technology for household drinking water in Semey, presents a comparative analysis of widely used disinfectants, and considers technological schemes for water disinfection with chlorine dioxide and a combined disinfectant " chlorine dioxide and chlorine".

Keywords: household drinking water, disinfectants, chlorine

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. "

The object of the research, the result of which is the presented work, is a comprehensive system of spatial data of the railway infrastructure, within which a high-precision system of coordinates of the Russian Railways has been created, and methods definition of normal heights in the Baltic Heights System 1977. The strategy and prospects for the development of high-speed transport highways (VSM) have been described. Methods for determining normal heights at research sites are given.

Keywords: Global navigation satellite systems (GNSS), GLONASS, high-speed highway (Navy), high-precision coordinate system (WCC), altitude system, quasi-geoid

To date, the socio-economic situation in the country creates for the population quite significant obstacles in the implementation of tasks for the purchase of housing and other real estate through mortgage lending. However, when it comes to collecting the amounts owed on the loan, banks are faced with an analysis of the prospects for the sale of mortgaged property, as a result of which, in most cases, come to the conclusion that the original sale price of the mortgaged property with the realities of the market. In the article, the authors consider the judicial practice of determining the initial price of the mortgaged property and analyze the situation in which there is a need for judicial value examination, as well as give the main aspects of the methodology of this type of expertise. The purpose of the article is to form a clear idea of the reader about the process of resolving the dispute arising from the breach of obligations under the loan agreement.

Keywords: expert, forensic examination, subject of pledge, cost examination, assessment report, methodology

An algorithm for determining the lower confidence limit (NDH) for the minimum value of the hardness of a set of machine parts by calculation is developed. For processing of statistical data of the hardness measurements used a three-parameter Weibull distribution is offered. The transition from sample data to population data is carried out by the graphical method. According to the algorithm, NDH was found for the minimum hardness value with confidence probabilities p=0.9; 0.92;0.93;0.94.

Keywords: hardness, machine parts, sampling, aggregate, lower confidence limit, graphic method, calculation method

The construction of social infrastructure is an integral part of improving the quality of life. The study systematized the main problems faced by the developer and the state in the construction of social infrastructure, provides an approximate list of measures that can improve the situation.

Keywords: social infrastructure, state, developer, economy, residential complex, public-private sector, housing construction, state, operation

V stat`e privoditsya obzor diagnostiki e`lementov zrelosti sistemy` upravleniya operacionnoj deyatel`nosti proekta na urovne Kampanii.

Keywords: sistema upravleniya operacionnoj deyatel`nosti, uroven` zrelosti.