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 article focuses on the developement of a stemmer for Pymystem morphological analyser. Theoretical justification for morphological analysis selection as a high-priority task of linguistic text analysis is given. The state-of-art analysers are described, their strengths and shortcomings are highlighted. The authors propose a core algorithm for nested structures splitting into structured class hierarchy. A method for selected parts of speech key features retrieval using regular expression and Python is defined. The main steps of the hierarchy creation algorithm are examined and documented. The researchers analyse core results of the study and describe their findings alongside with propositions for further developement of the presented software.

Keywords: stemmer, morphological analyzer, class tree, regular expression, text analysis, computational linguistics, lemma, token, word-formation, class hierarchy

The results of laboratory studies to determine the suitability of clay raw materials of the Klyuchevsky Sandstone field for the production of ceramic bricks by plastic molding are presented. It is established that the introduction of the composition of the batch of associated lithoidal rocks as emaciated additives, coal and kaolinite-hydrologist Vladimirovskaya raw material fields, as well as adding the modifying additives that increase frost resistance, it is possible to obtain ceramic samples that meet the requirements of GOST.

Keywords: clay raw materials, stone-like raw materials, plastic molding, ceramic brick, frost resistance

The article deals with the transition from corrugated plates and shells to smooth structures of equivalent rigidity. An expression for the potential deformation energy of an infinitely small element of an equivalent smooth shell and formulas that establish a connection between internal forces and generalized deformations of a corrugated structure are given. A review of the formulas for the equivalent stiffness of the corrugated shell during bending, presented in the works of various authors, is carried out. In order to select the dependencies that provide the smallest error when replacing the corrugated shell with a smooth one, a numerical experiment is performed in the LIRA finite element complex. A corrugated plate hinged around the contour under the action of a uniformly distributed projective load is considered. The calculation of the structurally orthotropic construction is performed numerically by the finite difference method. It is also established that the monograph of S.G. Lekhnitsky contains an incorrect formula for the moment of inertia of a sinusoidal corrugation.

Keywords: corrugated structures, plates and shells, finite element method, finite difference method, orthotropy, equivalent stiffness

The article deals with modern design and architectural planning decisions made in the design and construction of high-rise buildings. The scale and the scientific and technical level of the project represents a unique and first used in the practice of high-rise construction. The article analyzes the basic design decisions, a comparison with international practice and the best design solutions of skyscrapers in the world.

Keywords: high-rise unique building, stability, load-bearing systems, modeling, progressive collapse, structural system, outrigger, skyscraper, column, core of rigidity, strength, reliability, horizontal load

The article deals with the current stage of modernization of the industrial sector of the economy and development strategies aimed at improving productivity in enterprises in the region. The purpose of the study: identification and analytical review of the main problems of increasing productivity in industrial enterprises of the Rostov region; definition and systematization of strategic directions of problem solving, taking into account the accumulated positive experience of the regional business community. The main methods of research are analysis and synthesis, analysis of statistical data, observation and synthesis.Specific examples of the successful use of the proposed management tools within the industrial enterprises of the largest region of Russia - the Rostov region are given. This region produces about 28% of the industrial output of the entire southern Federal district, while the growth rate of the main indicators of its socio-economic development is higher than the national average. It is concluded that in the region under consideration there are all the prerequisites for the implementation of the regional program "increasing productivity and employment support in the Rostov region" for 2018-2025 on the basis of the introduction of advanced information, innovative management technologies in production.

Keywords: management, socio-economic system, modernization, industrial sector, labor productivity, region, strategies, management models, management tools

The article deals with the issues related to the study of aerodynamic and energy characteristics of the two layout solutions of mechanical ventilation and air conditioning systems - with the placement of the fan before and after the heater. Based on the use of graphoanalytic method of studying the parameters of the fan in the ventilation network, the dependences determining the aerodynamic and energy characteristics of the systems in three characteristic modes of their operation - at ambient temperatures equal to the design, the average temperature of the heating period and +8 ° C are obtained. The obtained dependences indicate that the installation of the air heater after the fan allows to increase the level of energy efficiency of the system in comparison with the placement of the air heater in front of the fan in the cold period of the year under the thermally unsteady operation of the supply ventilation system.

Keywords: fan, air heater, ventilation system, air conditioning system, power, energy saving, energy efficiency, non-stationary mode, the cold period of the year, the method of imposing characteristics

This work relates to the field of chemical technology and information can be used in the industry to protect against biofouling water recycling systems of energy and petrochemical enterprises.

Keywords: treatment, processes, water, corrosion, fouling, reagents, methods, coolant, electrical treatment, bioculture

The article discusses the possibility of applying the control theory algorithm when organizing express delivery of goods, in order to reduce transport costs of enterprises engaged in transportation of small-lot cargoes

Keywords: express delivery, forwarding services, transport company, control theory, mathematical method, transport network, sum method, block diagram

The well-known theoretical and experimental investigations of the stability of thin-sheeted shells of cylindrical storages are analyzed in the article. It was investigated the following problems concerning the stability of the wall of a spiral-bound granary and a cylindrical granary with a smooth wall, compressed by friction forces of the grain and load from the roof; stability of the wall of the cylindrical shell of containers for liquid and bulk materials when creating a prestress in them.

Keywords: stability calculation, wall stability, prestressing, internal lateral pressure, elastic rebound, cylindrical granary, grain friction force, load from the roof

The parameters of the thermal effect on the physical and mechanical characteristics of self-compacting concrete with the addition of fly ash Novocherkassk GRES. It was found that a higher level of quality SСС with the addition of fly ash is achieved at low temperature heat treatment. The duration of the thermal effect, which depends on the required Stripping strength of the concrete, should be assigned based on the specific production conditions. The effectiveness of fly ash in self-compacting concrete mixtures is manifested in reducing the water demand of the mixture and increasing the strength of concrete after heat treatment under the condition of rational dosage of hyperplasticizer and mineral additives. The optimum mode of heat treatment of SСС should be set by the coefficient of efficiency of heat treatment.

Keywords: self-compacting concrete, hyperplasticizer, mineral additive, concrete strength, heat treatment mode, heat treatment efficiency coefficient

The subject of the research is the possibility of using information modeling in the organizational and technological design of the construction of various objects. The purpose of the study is to identify the main parameters of the information model used for construction design. In the course of the work, an analysis of current work on this topic was made and the need to improve the quality of organizational and technological design in construction was identified. The article discusses the main tasks of organizational and technological design and examples of the possible simplification of their solution by using the information model of the object. Affected use in project development: 3D, 4D, 5D, and 6D simulations. Improving computer technology in this area makes it possible to minimize construction time and make the process of building buildings and structures cost-effective.

Keywords: information modeling, design, organization of the country, operation, scheduling, construction

In the modern world, technology has a special place in the dissemination of information and is an effective tool in the hands of man, contributing to a more effective result. However, not in all areas of information support has reached a high level in meeting the needs of specialists in the necessary and relevant data. The article discusses the necessity of optimization of information support of the activities of forensic experts-builders. The main problems in providing experts with the information they need are identified and the directions for their resolution are considered.

Keywords: Judicial construction and technical expertise, expert, information support, information technology, software, optimization of activities

investigated the concept of competition and competitiveness of construction organizations. Analyzed the main and specific factors of competitiveness of construction organizations. The ways to improve the competitiveness of construction organizations, taking into account the main and specific factors, are proposed.

Keywords: competition, competitiveness, competitiveness improvement, competitiveness factors, construction organization

The problem of the formation of failures of the earth's surface above the inclined workings of liquidated coal mines is considered. A new combined method for the elimination of the dips of the earth's surface and a phased design of the technological process for the elimination of dips are proposed. The application of the developed combined method for the elimination of failures and the design methodology for its parameters will ensure a reliable non-shrinking structure and prevent further development of negative processes on the surface over the eliminated mine workings of coal mines

Keywords: the elimination of mine workings, dips of the earth's surface, technological processes, cement mixture, bookmark, rock mass

Assessment of influence of speech intelligibility and reverberation time on the quality of acoustics Determination by theoretical method and computer simulation method of reverberation time in the modern audience and the audience, built more than 10 years ago. Determination of sound absorption coefficients of surface materials in both classrooms. Modernize of classrooms using wood fiber panels to increase sound absorption and reduce reverberation time. As a result, the reverberation time of the upgraded audiences has become less than one at all frequencies. This ensures good speech quality and efficiency of the educational process.

Keywords: acoustics, classroom acoustics, reverberation time, speech intelligibility, sound absorption coefficient, computer simulation, wood fiber

In modern Russia, market relations determine the direction of capital investments in the oil and gas industry. Preference is given to capital investments in profitable and fast-paying construction projects.. Increasing the efficiency of capital investments with their relative reduction can be achieved with the full intensification of oil and gas construction, which creates fixed assets for the oil and gas industry. The criterion for improving the efficiency of construction production can be called a reduction in the estimated cost of construction projects, reducing production costs with the growth of national income. Differences in the domestic and foreign assessment of the efficiency of capital investments in the oil and gas complex are due to the peculiarities of the construction process in this industry. Therefore, the methodology of a clear distinction in certain areas of construction, considering the construction industry as a process that ensures the development of the oil and gas industry as a whole, will assess the effectiveness of capital investments in the construction of oil and gas facilities for the entire period of investment.

Keywords: organization of construction, oil and gas facilities, technological processes of construction, efficiency of capital investments

Appointment of forensic construction and technical expertise in the practice of an expert is a prerequisite for collecting evidence and materials related to the construction site and the territories functionally associated with them, which for the practical application of the courts are an important factor when deciding in favor of a particular party to the proceedings (dispute). The problems arising in the process of the case under study are objective and legal in nature.

Keywords: judicial construction and technical expertise, expert, court, criminal justice, civil justice, problems of practice, procedural action, expert opinion, court decision

Progressive collapse - or, in particular, an understanding of the mechanics of this phenomenon and the development of ways to consider it in the framework of structural design - can be regarded as a relatively new topic in building science. The article describes the background to the emergence of this topic, ranging from local examples of the collapse of buildings and ending with the well-known collapse of the World Trade Center. Analyzed the latest world research in this area and revealed inconsistencies in the requirements of regulatory documentation and the real work of the building frame in case of progressive collapse

Keywords: progressive collapse, durability, steel frame, multi-storey buildings, connections stiffness, ductility

Noise pollution is an ecological problem of big cities. Noise can reduce the working capacity of city residents and cause various diseases, so combating it is the most important event for ecologists, doctors, builders and other stakeholders. Studying the ability of plants to absorb noise will allow you to plan the future of the city’s territory. Examining the ability of green roofs to absorb noise will solve the noise problem in places where creating additional landscaping is possible. As a result of studies revealed green cement capable of reducing the noise level in the premises to 1.5 dB greater than the conventional roof. Based on the work carried out, a systematic approach has been proposed to solve the problem of noise pollution in the urban environment in the North by creating various types of green roofs on roofs with a slope level of less than 30 °.

Keywords: noise pollution, plants, green roofs, noise-attenuating ability

The article examines the problems of construction and design of buildings and structures in tropical areas of Vietnam, formulated the principles of their construction. It demonstrates that the comfort principles are correlated with the corresponding composition techniques and methods are implemented in a system architecture approach Urbanized shaping medium using methods lighting calculations that take into account parameters of the light and climate conditions insolation simulation method for building layouts.

Keywords: construction, design, tropical areas, solar radiation, insolation, sun protection devices, light climate, cloud statistics, structures, architecture, design

The article presents the analysis of the properties of local fine aggregates, their influence on the characteristics of the concrete, and also presents the impact of screening crushing when it is introduced into the mixture in various proportions on the strength of concrete

Keywords: Concrete, screenings of crushing, construction sand, experiment, grain composition, concrete strength, small aggregates

The article is devoted to the issue of improving the environmental safety of the construction industry by improving the systems of decreasing dust emissions by aspiration systems using a comprehensive dispersive analysis. There was proposed to develop a promising approach using the criteria of hydrodynamic similarity in the output functions of the complex analysis of variance to increase the efficiency of aspiration decreasing dust systems in this article. The article focuses on the environmental problems of building construction industry. The volume and different kinds of mixtures of bulk building materials and cements to produce various types of concrete construction units and materials are in stable demand every year. It means that average amount of dust particles substances in emissions at the manufacturing production of building materials every year too. The results of studies show that a significant content of fine particles, for example, 10 microns or less is concern in dust emissions systems of aspiration at the building construction enterprises. One of ways to increase the environmental safety is reduction of dust emissions to design dust capturing devices that have low values of slippage out from aspirations’ decreasing dust systems. It was achieved by special complex integrated analysis’ method of variance dust that applies hydrodynamic sedimentation of particles. It is the way to obtain distribution of dimensionless numerical complexes — the hydrodynamic similarity criteria for the dust studied samples. There presented results of experiment that gave more reliable approach to get evaluations of the complex analysis of particles sedimentation velocity’s distributions.

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

The paper presents the characteristics of the leading types of media facade constructions on the market, on the basis of the analysis of which the prospects for the introduction of technology into the urban space were evaluated. The article also describes the main types structural and architectural solutions that determine the rationality of the use of a particular type of media facade.

Keywords: media facade, cluster media facade, framed media facade, frameless media facade, modular media facade, LED, architectural lighting, LED screen, media facade design, interactive facade

The paper discusses certain thermal insulation materials, which, according to national and foreign researchers, are capable of ensuring the utmost energy efficiency of vertical enclosures of buildings and works. Based on the comparative analysis of some of the main thermal insulation properties and performance characteristics, the most energy efficient materials were identified among the materials offered for consideration. The key benefits and drawbacks of these materials are further provided in tabular form. The point is made that the optimal selection of energy efficient materials shall be arranged as a comprehensive computer-aided process, because the market of modern thermal insulation materials is huge. The selection process shall include the ranking of materials based on specific criteria.

Keywords: energy saving, thermal performance, thermal insulators, liquid ceramic thermal insulators, composite foam, environmental performance