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Mukanov Ruslan Vladimirovich -
Astrakhan State University of Architecture and Civil Engineering (ASUACE)
senior lecturer, Department of Engineering Systems and Ecology, Astrakhan State University of Architecture and Civil Engineering (ASUACE), 18 Tatishcheva st., Astrakhan, 414056, Russian Federation.
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Svintsov Vladimir Yakovlevich -
Astrakhan State University of Architecture and Civil Engineering (ASUACE)
Doctor of Technical Sciences, Professor, Department of Engineering Systems and Ecology, Astrakhan State University of Architecture and Civil Engineering (ASUACE), 18 Tatishcheva st., Astrakhan, 414056, Russian Federation.
Subject: the paper considers the development of a method for liquid media dispersion using a high-potential electrostatic field. The existing methods for dispersing liquid media used in industry nowadays have both a number of advantages and disadvantages, the main ones being: the heterogeneity of the particles in size and the increased energy costs for the dispersion process. The analysis of literature sources has shown that with regard to the dispersion of food products during the drying process, the electrostatic dispersion method has encouraging results. This induces great interest in approbation of the electrostatic dispersion method for a wide range of substances, as applied to other industries. To assess the potential of this method, experimental studies were carried out on the dispersion of liquids with electrically conducting, semiconducting and dielectric properties. Research objectives: obtain dependence of dispersity of spray (with an average diameter of droplets) on flow rate and voltage of the high-voltage power supply unit. Materials and methods: to achieve the goal, an experimental device was developed consisting of several functional blocks that allow us to change the flow rate of the medium being atomized, as well as the intensity and geometry of the electrostatic field. During development of the experimental device, in order to select the main equipment, the voltage outputted by the high-voltage power supply unit, as well as its power, were estimated. The results of the experiments (dispersion process) were recorded using digital photo equipment, which allowed us to determine the sizes of the dispersion particles on the basis of their comparison with the reference value. Results: it has been experimentally confirmed that the electrostatic dispersion method makes it possible to obtain a spray with predefined dispersity parameters at high degree of homogeneity. Conclusions: the experiments confirmed the working capacity of the given method of liquid medium dispersion. As a result of processing of the experimental data, a range of voltages was determined at which the change in the dispersity is the most intense. The obtained data form the basis for the development of dispersion devices for various industries.
DOI: 10.22227/1997-0935.2018.1.44-52
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Maksimova Ekaterina Yurievna -
Moscow State University of Civil Engineering (National Research University) (MGSU)
Assistant of the Department of Economics and Management in Construction, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
Subject: indicators of modern economic growth in construction, published by the government agencies, reflect individual directions of growth. At the same time, the analysis of the reasons for the unachieved results is conducted by various researchers primarily from the standpoint of the inadequacy of economic and other resources. This article deals with the problem of ensuring the growth of construction enterprises from the viewpoint of systemic barriers, and in this regard, these barriers are defined as the subject of the present research. Research objectives: studying the concept of barrier market restrictions, their impact on the activities of construction companies. Materials and methods: statistical data in the field of housing construction, provided by the Ministry of Construction of the Russian Federation and Rosstat, is examined to solve the given tasks set. The content of state programs and activities of state institutions in the field of support and development of construction activities is considered. Based on investigations of sustainable economic development, an understanding of the constraints and incentives for development is revealed. Results: we have identified the content of barrier market restrictions, which are not possible to overcome only by involving additional economic resources in the turnover. The ways of confronting these restrictions are shown. Conclusions: it was shown that implementation of promising activities is impossible without overcoming various systemic constraints. Their structure is described in sufficient detail. Principles of economic sustainable development are proposed. It was proved that the reserve system can serve as an effective way to overcome market barriers.
DOI: 10.22227/1997-0935.2018.1.53-60
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Prokop’ev Andrey Petrovich -
Siberian Federal University (SFU)
Candidate of Technical Science, Associate Professor, Siberian Federal University (SFU), 82 Svobodnyy Prospekt, Krasnoyarsk, 660041, Russian Federation.
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Ivanchura Vladimir Ivanovich -
Siberian Federal University (SFU)
Doctor of Technical Science, Professor, Siberian Federal University (SFU), 82 Svobodnyy prospekt, Krasnoyarsk, 660041, Russian Federation.
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Emelyanov Ryurik Timofeevich -
Siberian Federal University (SFU)
Doctor of Technical Science, Professor, Siberian Federal University (SFU), 82 Svobodnyy prospekt, Krasnoyarsk, 660041, Russian Federation.
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Pal’chikov Pavel Anatol’evich -
Siberian Federal University (SFU)
Postgraduate Student, Siberian Federal University (SFU), 82 Svobodnyy Prospekt, Krasnoyarsk, 660041, Russian Federation; ert-44@yandex.ru.
Subject: management of operating modes of road-building machines, taking into account the implementation of the concept of information modeling of the road. We have reviewed the status and the development problems for directions of improving the control systems of road-construction machine processes. In this work we focus on the road construction stage “laying asphalt-concrete - compaction”, the effective control of which can lead to significant improvement in the quality of road surfaces, increase of durability and reduction of defects in pavements. Research objectives: rationale and directions of realization of the concept of intellectualization of the road construction management. Materials and methods: analysis of the shortcomings of construction of asphalt-concrete pavements, analysis of the methods of workflow management of road-building machines. Results: we have substantiated the methodological background for the development of intellectual control systems of road-building machines. Conclusions: we considered possible ways of introducing the concept of intellectualization of management systems for road-building machines.
DOI: 10.22227/1997-0935.2018.1.61-70
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Marichev Pavel Aleksandrovich -
Main Scientific Metrological Center of the Ministry of Defense of the Russian Federation
Candidate of Technical Sciences, Head of Department, Main Scientific Metrological Center of the Ministry of Defense of the Russian Federation, 13 Komarova str., Mytischi, Moscow oblast, 141006, Russian Federation.
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Kornev Aleksey Sergeevich -
Main Scientific Metrological Center Ministry of Defense of the Russian Federation
Head of Laboratory, Main Scientific Metrological Center Ministry of Defense of the Russian Federation, 13 Komarova str., Mytischi, Moscow oblast, 141006, Russian Federation.
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Khayrullin Rustam Zinnatullovich -
Moscow State University of Civil Engineering (National Research University) (MGSU)
Doctor of Physical and Mathematical Sciences, Senior Researcher, Professor of Applied Mathematics Department, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoye shosse, Moscow,129337, Russian Federation.
Subject: study of the Park of Measuring Equipment (PME) that includes hundreds of thousands of standard samples, measuring instruments, control and measuring devices and other measuring mechanisms with different areas of application, levels of reliability, service life, levels of technical perfection and levels of technical condition. Research objectives: 1. Development of a complex of mathematical models to simulate the processes of development of PME, control indicators of PME performance as a whole, purposefully control the stages of life cycle of measuring equipment samples. 2. Development of the method which, with a sufficient degree of validity and objectivity, would solve the tasks of management of procurement and repairs both in preparation of proposals for preliminary long-term plan documents (LTPD) and to ensure control over the implementation of adopted plans. Thus, the method being developed should be fairly simple to use, easily adjustable for solving problems of different dimensions, suitable for solving the optimal control problem for PME as a whole, for a part of PME, and also suitable for solving a generalized problem for certain “aggregated objects” such as the Metrology Centers. Materials and methods: the methods of mathematical simulation, methods of comparative analysis, simplex method for solving linear programming problem, methods of program-target planning were used. Results: an approach to the solution of problems of program-target planning based on solving a series of linear programming problems has been developed. The results have been presented of using the approach both for formulation of proposals into the preliminary LTPD and also for introducing revisions (amendments) to annual plans, which are implemented in the framework of the state defense order. Conclusions: the described method and algorithms constitute an effective tool for solving practical problems of target-oriented management of PME performance indicators. Analyzers, control and measuring equipment and devices used in the field of construction and housing and communal services go through the same stages of the life cycle and have similar levels of technical perfection and technical condition as the samples of measuring equipment, measuring devices and measuring mechanisms described in the article. Therefore, the results and methods presented in the paper can be effectively used to control the performance indicators of park of devices and measuring instruments used in the field of housing and communal services and construction industry.
DOI: 10.22227/1997-0935.2018.1.71-79
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Tararushkin Evgeniy Victorovich -
Russian University of Transport (MIIT)
Assistant, Department of the Building Materials and Technologies, Russian University of Transport (MIIT), building 9, 9 Obraztsova st., Moscow, 127994, Russian Federation.
Subject: creation of a mathematical model based on the theory of operations research for appointing the members of construction teams when executing construction, installation and finishing works in civil engineering. Research objectives: optimization of the construction team structure from the condition of the highest possible quality of teams, which is determined by qualification, experience of the worker and the need to appoint a worker for a certain type of works. The problem of finding the optimal composition of the team is formulated as a linear programming problem. Materials and methods: to solve the given problem, a simplex algorithm was used in combination with the branch and bound method to obtain an integer value solution. The programming language of the mathematical package Matlab was used to implement the indicated methods of solution. Results: a mathematical model was created for appointing workers of construction teams. An example of realization of the obtained mathematical model is given. Conclusions: this mathematical model can be used for practical purposes for planning and organization of the construction process. The use of the model by designers will help to reduce their time expenditures, reduce the labor intensity of work and better perform the assignment of workers to construction teams, especially w
DOI: 10.22227/1997-0935.2018.1.80-86