Objectives. An investigation of the stress-deformed state of a poroelastic cylindrical body under uniform radial compression.

Methods. Mathematical modeling based on the phenomenological approach for the description of porous media, as well as within the framework of geometrically linear relations of the theory of elasticity.

Results. A mathematical model is constructed to describe the inhomogeneous stress-deformed state of a cylindrical body for materials having a porous structure under elastic operation of a fully compressed matrix. The deformation of the porous medium under uniformly distributed compressive loads is divided into two interrelated stages: the elastic deformation of the porous compressible medium and the elastic deformation of a fully compressed matrix for which further incompressibility is a defining property. The problem of determining the stress-deformed state of a cylindrical body at each stage of deformation is solved within the framework of a planar deformation. This does not take into account effects associated with the fact that the cylindrical body under consideretion has a finite height. Relations determining the stress and displacement fields at each stage of deformation are obtained. The dependency of external loads is determined for which the initial porosity of the material reaches zero throughout the entire body. The graphical dependencies of the stress components on the coordinate are constructed for the different values of initial pore solution and other physical-mechanical and other material and structural geometric parameters.

Conclusion. The constructed analytical dependencies describe the inhomogenous distribution of stress and displacement fields at the deformation stage of materials having a porous structure and a cylindrical body with a fully compressed matrix. These relations are consistent with the general physical concepts of the processes under consideration and allow for a limiting transition to known solutions.

Objectives. The purpose of the study is to develop dynamometric equipment for measuring the components of cutting forces when processing materials with an axial tool in a dynamic mode.

Methods. The study is based on the application of electrical methods using piezoelectric and strain gauge transducers, whose main advantage is the ability to register and record fast-moving dynamic processes.

Results. Based on an analysis of existing dynamometers, the necessity of developing a new modern dynamometer device, which would allow the oscillations of the cutting force components to be registered and recorded in dynamic mode, is justified. The advantages of using strain sensors for a dynamometer are described. An analysis of the selected dynamometer design indicated that the sensors for measuring the axial forces and torque are located on one elastic element, which affects the accuracy of their measurement due to their mutual influence. Therefore, it was necessary to place them on different elastic elements. The developed and manufactured dynamometric equipment for carrying out the research work in the field of axial tools for processing materials is presented. The relative measurement error is calculated.

Conclusion. The dynamometric equipment makes it possible to record the periodic and quasiperiodic oscillations of two components of the cutting forces without distortion for various tapping, drilling and countersinking processes, occurring at a frequency of up to 1500 Hz in real time mode, and can be used to optimise the cutting parameters. Using the dynamometric equipment, it is possible to register the signals from up to 8 force sensors in real time, amplify signals, transform the signal from analogue to digital, visualise data and print out the results of experimental data. The equipment is suitable for use in research laboratories of machine-building enterprises, universities and other scientific institutions.

Objectives. In practice, the process of loose material flowing from hoppers in different technological processes is often disrupted, resulting in reduced processing efficiency of contained loose materials. One of the most common reasons for the interruption of flows is the formation of dynamic arches in the hopper. From this perspective, the aim of the study is to assess the effect of static arches on the efficiency of technological processes in the hopper.

Methods. The study was based on a system of differential equations describing the stationary and equilibrium state of the loose medium, which is integrated in the boundary conditions corresponding to round silos and hoppers. In this case, the analytical expressions for the pressure components of loose material in different directions are derived.

Results. The obtained solutions are checked for logical consistency and illustrated with the help of graphs constructed in the area of symbolic mathematics for modeled and real parameters of silos and hoppers. The results of mathematical modeling are compared with experimental data for typical silos. The scatter of the experimental values is related to the processes of compacting the loose material, the time of its storage in the silo, as well as the microvibrational directions of a seismic or technogenic nature. The loose material in the silo resides in an intermediate position between stationary and equilibrium states at all times. The parameters of the loose material (bulk density, external and internal friction angles) represent some generalised values that do not correspond to a specific loose material, which, in addition, can vary over time.

Conclusion. It is confirmed that arches formed in the hopper during the static state acquire a dynamic character during material flow, hampering the flow process and consequently reducing the efficiency of the hoppers.

Objectives. Recently, there has been a sharp increase in research interest in thermoelectricity (TE) and its applications. New designs for thermoelectric converters (TEC) are being proposed and a large number of new thermoelectric materials (TEM) with a thermoelectric figure of merit Z = a2s/ k enhanced by the nanotechnological (NT) method are obtained. (Here a, s and k are the coefficient of thermal electromotive force (EMF), the specific electrical conductivity and the thermal conductivity, respectively). As a result, the need for a sharp increase in the labour productivity of researchers working in the thermoelectric (TE) industry has emerged, especially when determining the characteristics of thermoelectric materials and thermoelectric converters, as well as when processing an increased volume of literature data.  The aim of the present work is to develop a set of methods for rapid analysis of the characteristics of thermoelectric materials and thermoelectric converters, allowing the labour productivity of researchers working in the TE industry to be increased.

Methods. The problem was solved by selecting well-known methods for studying TEM and TEC, based on nonstationary measurement principles and computer calculations, as well as creating new methods.

Results. The result of the work was an expansion of the capabilities of the established thermal probe and Harman methods used to measure the Z parameter and its components (a, s and k). The Harman method is expanded to multistage modules, allowing for the passive compensation of thermal losses when measuring in air (the switching of thermocouples (TP) in “head to head” mode). Methods for estimating the Eg – the band gap width of the TEM – according to the curves  Z = f (T, as well as the calculation of the TEC using the Lenz rule, are developed. A method is proposed for diagnosing the “phonon glass electron crystal” (PGEC) phase (1 ~ lph / a << λe / a/ a) by determining the mean free paths of phonons lph and electrons λe. (Here, a = 3 nm is the shortest interatomic distance). The method of autoelectrochemical alloying of thermoelectric materials, as well as diagnostics of nanostructures (NS), is developed by determining the “physical property-NS identity period x ” dependencies. Examples of the developed technique using for analysing the characteristics of thermoelectric materials and thermoelectric converters are given.

Objectives. The aim of the study is to simulate the thermophysical processes occurring during thermal treatment procedures applied to the human foot using a technical apparatus in which a thermoelectric battery (TEB) acts as a source of heat and cold.

Methods. A physical model of thermal impact on the human foot is developed by means of a device whose actuating element consists of a thermoelectric battery. Different procedural versions, varying by the zone of thermal influence as well as by the presence and absence of granulates, are considered. For the most general case, a mathematical model is constructed, based on a numerical solution of the nonstationary heat conduction problem of a layered system. As a numerical method for solving a system of differential equations, the Galerkin method, characterised by high accuracy and efficiency, is used.

Results. The graphs of the temperature variation dependency on the “device-foot” system thickness for various heat flow values are obtained, as well as the temperature changes of system individual parts over time and the temperature distribution along the thickness of the foot for various values of the summand determining the looseness of its contact with the granulate.

Conclusion. The developed model of a thermoelectric device for thermal action on the foot area allows a comprehensive study of the heat exchange processes during physiotherapeutic procedures to be be carried out, a thermoelectric battery with the required characteristics to be selected as well as the modes of device's operation to be determined. It is established that the duration of the steady-state output of all points of the “device-biological object” system determines the acceptable inertial properties of the device. When a granulate is used during the procedures, it is necessary to take into account the power losses when selecting the thermoelectric battery power modes.

Objectives. The transition to pulse circulation of the working medium in effective systems of heat and water supply result in a need to improve the technology used to organise pulse coolant circulation, as well as to develop fundamentally new technical solutions for pulse superchargers that use the energy of local hydraulic shocks. The aim of the present study was to evaluate the known designs of pulse superchargers of water-lifting devices in terms of operational reliability and efficiency in hydraulic heat and water supply systems.

Methods. The design features of pulse superchargers using hydraulic shock energy are analytically generalised. Methods for analysing the reliability, efficiency and conditions for selecting the pulse superchargers used in water supply systems are applied; a review and analysis of technical solutions for pulse supercharger designs used in heat supply systems is carried out.

Results. Based on the results of the theoretical construction analysis, as well as on the experience in the practical application of individual technical solutions for pulse superchargers, provisions are determined that affect the efficiency and reliability of their operation under the working conditions with various types of heat and water supply systems. The analytical results of the pulse supercharger designs using the hydraulic shock energy applied in water supply systems reveal two main options for their technical execution, namely, a diaphragm or a piston. The significant technical solution for pulse superchargers in heat supply systems is a design in which the injection process can be implemented in conjunction with the heat exchange process. The obtained results of the conducted intellectual activity are provided with patent protection.

Conclusion. Recommendations on the use of individual pulse supercharger designs for solving specific problems in heat and water supply systems are formulated. Materials are proposed for the manufacture of some elements of the design of pulse superchargers in order to increase their reliability and energy efficiency.

Objectives. The identification of deviations and incidents in the activities of enterprises is an integral part of the entire process of compliance with regulatory industry standards. In particular, these standards include good manufacturing practices (GMP) and the system of corrective and preventive actions (CAPA). The aim of the research is to automate the processes of identifying deviations and determining the probable causes of their occurrence in complex stochastic systems.

Methods. Questions concerning the modeling of compliance processes with industry standards are studied on the example of the organisational management of pharmaceutical production. A method is proposed for the automated realisation of deviation from identification processes based on the processing of unstructured messages, the automatic generation of characteristic control parameters and a comparison of registered values with normative ones. The problem of detecting the primary cause of deviations is considered on the basis of the algorithm for processing the cause-effect relationships and probabilistic values of the relationship between the different defined groups of deviations.

Results. Based on the proposed method of machine detection and identification of deviations, the information management system of CAPA procedures has been developed and successfully implemented at several enterprises within the pharmaceutical industry. The feature of the proposed method is the principle of system self-development based on the processing of “historical” data, which allows the probabilistic values of the relationship between the different groups of deviations to be dynamically calculated. This in turn allowed decisions on the implementation of changes according to the expert reports generated by the information system to be quickly and accurately taken by quality specialists. The generation of the electronic production dossier has significantly reduced the time of production protocol preparation and eliminated human factor errors.

Conclusion. The full-cycle automation of CAPA procedure management allowed the enterprises to solve the primary task of continuous compliance with industry standards due to timely detection of deviations or deviation trends and promptly carrying out corrective and preventive actions to eliminate inconsistencies.

Objectives. The method for planning the optimal trajectory of a three-link manipulator with 7 degrees of mobility in a tridimensional space containing an obstacle specified by an array of points of three-dimensional space and represented in the form of a sphere is considered in the article. A literature review on the research problem indicates that universal methods for planning the trajectory of the manipulator's movement are faced with problems of operational low accuracy or the algorithm's large computational complexity. The aim of the study is to develop methods for planning the optimal trajectory of a three-link manipulator in a tridimensional space with an obstacle.

Methods. The study was carried out using the method of iterative piecewise linear approximation of the trajectory of an anthropomorphic manipulator and the choice of the optimal displacement trajectory according to the criterion of energy efficiency.

Results. The method for planning the optimal trajectory of a three-link manipulator with 7 degrees of mobility in a tridimensional space containing an obstacle specified by an array of points of three-dimensional space and represented in the form of a sphere is considered in the article. The task is reduced to finding the Euler angles of the manipulator engines in order to pass to the final position either directly or using the developed method of searching for intermediate positions to achieve the result. The choice of the optimal trajectory for the obstacle bypass is made using the criterion of minimisation of the manipulator power consumption for the continuous operation of the mobile manipulative or anthropomorphic robot in offline mode.

Conclusion. The method of planning the optimal trajectory of a three-link manipulator with 7 degrees of mobility in a three-dimensional space containing an obstacle specified by an array of points and represented in the form of a sphere possesses flexibility, which is achieved by varying the input parameter. Its increase makes the manipulator's movement more angular by reducing the number of intermediate states, which reduces computational costs while increasing energy costs and reducing the movement speed. Conversely, decreasing the parameter reduces energy consumption and increases the speed, but also increases computational costs, as the number of intermediate states increases and the movement becomes smoother. However, in order to reduce the estimated time, it is assumed that parallel calculations are used in calculating the Euler angles for the engines during the movement between the intermediate points, which greatly speeds up the calculation process. With the value of h=0, the trajectory degenerates into a curve and the application of the proposed method is not justified.

Objectives. A cognitive approach that represents a superposition of various approaches such as system, informational, socio-economic, financial-analytical, financial-economic, analytical, cybernetic and others, is inherently complex. Having this in mind, the aim of the present study is to increase the operational efficiency of economic entities through the implementation of a horizontal, vertical and trend-based (microscopic) financial analysis procedure based on the generated innovative block of parametric cognitive models and a system of analytical coefficients.

Methods. System analysis, modeling of information and educational environments, financial analysis of highly integrated enterprises and credit organisations.

Results. The described cognitive approach in contemporary computer science was developed by the author on the basis of a layer-step model of perception, the processing and understanding of the content of heterogeneous information fragments. The developed innovative block of parametric cognitive models forms the informational basis of (microscopic) financial analysis containing the cognitive models for horizontal, vertical and trend financial analysis of an enterprise or a credit organisation. It is based on the generated system of analytical coefficients, each representing a complex of parameters (indicators), echeloned for a series of portraits and stratified into several independent sets, arranged on two different levels of the selected hierarchy (structure).

Conclusion. The genesis of the cognitive approach is due to the possibility of vertical, horizontal and trend-based financial analysis based on the system of analytical coefficients of primary registers of accounting and financial analysis through an independently developed block of parametric cognitive models. Financial analysis of highly-integrated (credit) organisations initiates the need to take into account a wide range of different scientific fundamental and applied areas of contemporary science, as well as necessitating the use of an innovative research apparatus. The introduction and practical use of the cognitive approach is essential for the development of key sectors of the national economy.

Objectives. The greatest potential for development of the mobile communications market is located in the mass segment. The aim of this work is to describe an approach allowing specialists who may not be competent in marketing and advertising to generate effective communication messages for promoting mobile applications to the consumer market.

Methods. The approach is based on a combination of the following methods: the ideas of semiotics as one of the key elements of communication theory, artificial intelligence methods and patterns involved in the design of content of communication messages in the context of accumulated experience. In the study, provisions of classical and digital marketing, copywriting, semiotics, psycholinguistics as well as Customer Development methodology are analysed. The induction method made it possible to describe some regularities in the compilation of effective communication messages, which was reflected in the subject area model.

Results. The conceptual model of the subject area in the form of a semantic network is presented, in which the basic concepts and relationships of marketing elements necessary for the formation of communication message content are described. The key concepts in the semantic network are the “mobile application” and the “consumer”. Advertising texts are to be generated according to the marketing characteristics of these concepts (especially in terms of the perception of information, properties of the mobile application and others). The semantic network is the basis for the design of communication message templates. The task of the templates, on the one hand, is the formation of the "frame" of the message, suitable for some typically emerging context seen as the set of characteristics of the target group of consumers, mobile applications and the tools for its distribution. On the other hand, the template consists of a sequence of lexical units matched to the marketing characteristics of the conceptual objects described by the semantic network, which are most likely to induce potential consumers to commit the actions desired by the seller. The results of approbation are presented by the example of the activity of the group of enthusiastic developers.

Conclusion. The proposed approach can help small IT companies (including start-ups) to independently develop effective communication messages.

Objectives The aim of the research was to develop a new approach to the configuration formation from the elements of nxn-arrays of sets by the permutations of their elements based on the requirement to order the structures of rows and columns according to the index characteristic.

Methods. The proposed method of "index structurisation" of nxn-arrays of sets is based on the functional dependencies of the index values of the surrounding elements, located directly around any of the elements formed by the configuration permutation, from the index values of the element they surround. The configuration formation from elements of nxn-arrays of sets is carried out by permutations of row and column elements according to given indexing rules and based on the functional dependency of the index values of the surrounding elements from the index values of the element they surround.

Results. A new “index structurisation” approach to the organisation of elemental permutations of information arrays characterising the unique definition of the elements of combinatorial configurations of its structural properties by the rules of indexing, is proposed. General requirements are formulated for the represented functional dependencies of the index values of surrounding elements. The notion of the index remoteness coefficients of surrounding elements is introduced and their influence on the structure of configurations formed is investigated. The properties of the configurations formed by the proposed dependencies as well as the scope of their possible application as discrete system and process models are investigated.

Conclusion. The proposed approach to configuration using permutations of elements of nxn-array of sets, based on the "index structurisation" characterising the unique rules of indexing the elements of combinatorial configurations of its structural properties, establishes a basis for index structurisation of combinatorial configurations.

Objectives. In order to investigate the property of the operational effectiveness of automated systems for protecting information from unauthorised access, it is necessary to analyse the normative documents (both international and Russian) and scientific materials devoted to the evaluation of software quality. The aim of the study consists in the analysis of the existing deficiencies in systems for protecting information from unauthorised access, on the basis of which analysis it is possible to develop performance indicators, substantiate and develop the criteria for assessing the operational effectiveness of the information protection systems from unauthorised access in automated information systems  and develop an algorithm for the integrated evaluation of the operational effectiveness of information protection systems on the basis of the established criteria and indicators.

Methods. One of the methods for solving the set goals consists in the main provisions of efficiency and systems theories, which in turn became the theoretical basis for solving problems involved in the creation of criteria and assessment of performance indicators of information protection systems.

Results. The criteria and performance indicators for the creation of automated information systems are developed on the basis of the analysis of open literature sources and existing shortcomings in the real use of systems for protecting information from unauthorised access. An algorithm for the integrated evaluation of the operational effectiveness of the information protection systems is developed.

Conclusion. In the article, based on the analysis of normative documents (both international and Russian), as well as on the scientific materials devoted to the quality (function efficiency) of complex software systems, to which the information protection systems can be related, a system of performance indicators was developed. These can be indicators can be classified as partial (static, practically independent of time, the evaluation of which is based on expert estimates) and integral (dynamic, time-dependent, the evaluation of which is based on mathematical modeling).

Objectives. The classical management approach associated with the organisation of management processes in enterprises, regions and states is aimed at improving the efficiency of the operation of the management object, but not at solving problem situations encountered by representatives of the society. By developing a theory of joint search for solutions to problem situations in which social actors find themselves, it is proposed to supplement traditional management techniques with an intersubjective social management approach aimed at improving the quality of life of people. The aim of the research is the further development of intersubjective management theory and its supplementation by formalised means for practical application.

Methods. The system approach, methods of analysis and synthesis and mathematical modeling are applied. In order to visualise the stage sequence of finding a way out of a problem situation, a method relying on graphic images is used.

Results. The theory of intersubjective management for finding a way out of problematic social situations is developed. Additionally, an algorithm for analysing the problem situation and finding a solution is presented, the “problem situation” is considered in terms of the meaning of the problem situation chain, a formal mathematical model of the problem situation is constructed and the application of the basic provisions of the theory of intersubjective control is described on an example.

Conclusion. The proposed scheme for analysing problematic situations complements existing theoretic using an approach that will allow it to be applied in practice.

Objectives. The aim of this work is to develop methods for automated text analysis and the retrieval of relevant data from full-text documents, as well as applying semantic text analysis methods for using linguistic ontologies as formalised models of subject area representation. Another aim is the use of electronic encyclopedias, primarily Wikipedia, as the basis for constructing the linguistic ontologies in order to derive maximum semantic information about their concepts, vocabulary expressions, interrelations and hierarchy.

Methods.The search for solutions based on system analysis methods is based on the emergence of new technologies that for solving both the text itself and the object of research that is to be solved as a result of such processing. When creating contemporary artificial intelligence systems or their components, developers and researchers often face the need to formalise a certain subject area in order to automate the processing of phrases, word collocations and sentences entering the system in natural language form. Currently, the most popular approach to the formal description of a subject area is to construct an ontology.

Results. Established approaches to the retrieval of information are described along with the architecture of the automated system and the results of their application.

Conclusion. Semantic data analysis methods are applied with linguistic ontologies used as the formalised models of subject area representation. Approaches to retrieving information from Wikipedia are described along with the architecture of the automated system and results of its application.

Objectives. The aim was to obtain models for predicting local scouring funnel parameters caused by the water flow at the bed by pile foundation supports taking into account the reliability and heterogeneity of the foundation ground.

Methods. Mathematical experiment planning methods informed by the theory of similarity and dimensions were used in the work; appropriate processing of the experimental results was carried out.

Results. Factors determining the investigated phenomenon were determined. Existing approaches and methods used in already conducted studies were analysed in detail and summarised. For the possibility of setting up the experiments under laboratory conditions and transferring results to field conditions using the methods of the theory of similarity and dimensions, a criterion equation describing the phenomenon of local scouring was obtained. The dimensionality of the multidimensional problem is reduced by taking into account the explicit relationships between the dimensionless factors. The deformability of the foundation grounds is accounted for by the kinematic similarity of the flows. The factorial design of the experiment was justified on the basis of a large number of experimental plans. In this way, the factor space is completely covered, providing a more accurate prediction of the scouring funnel parameters. The intervals and the number of levels of factor variation are determined by analysing the sizes of typical and realistic support designs, taking into account the recommendations and requirements for designing piling pillars; the dimensions of the hydraulic tray for conducting the experiments were also taken into account.  As a result of the processing of experimental data, the required dependencies were obtained for both the absence and input of deposits into the scouring funnel. The adequacy of the obtained models was checked on the basis of independent laboratory experiments and full-scale data on the Brazos and Volga rivers. The heterogeneity of the channel bed grounds is accounted for by the diameter of the pavement particles. To improve the reliability of the local scouring forecast, it is recommended that the obtained dependencies take into account the upper limits of the confidence intervals of the required functions.

Conclusion. A technique is proposed for determining the depth and planned parameters of a channel scouring funnel, composed of disjointed grounds near pile-supported structures crossing watercourses with a specified degree of reliability.

Objectives. The main objective was to study the problem of synthesising monumental sculpture in architectural ensembles of the city of Makhachkala. The term “problems of synthesis” includes a number of key rules and patterns, from the correct solution of which depends the harmonious inclusion of monuments in the environment.

Methods. The study of monumental art installations is based on the methodological and theoretical studies of Soviet art historians and architectural researchers, based on a wide range of requirements for the installation of monuments in an urban environment. The research methods also include the spiritual and aesthetic, formal-stylistic and ideological-content aspects of the analysis of works of monumental art.

Results. The most famous sculptural monuments of the city of Makhachkala were analysed, the positioning of which required the authors to solve art-aesthetic and spatial-compositional problems intelligently, ensuring positive perception of the monuments in connection with the architectural layout of the city. Various historical situations of specific locations of Makhachkala were explored (road forks, island sections of ring roads, parks, squares, alleys, etc.), which create favourable or unfavourable conditions for the installation of sculptural monuments. The main provisions given in this article can be used as a criterion for evaluating and analysing works of monumental art as well as to provide methodical guidelines in planning development for both the construction of new and the reconstruction of old monuments of the capital.

Conclusion. The urban development of Makhachkala, involving high density residential areas and a profusion of monuments in the ring roads and squares, requires a special, creatively sensitive approach to problems of synthesis of architecture and plastic arts, on which both the harmonious appearance of urban ensembles and a comfortable living environment depends. The choice of the monument type and its ideological and semantic canvas for a specific locality, the solution of composition-spatial problems, the establishment of scale and limits of near and far points of view, the direction of lighting, colour, texture, individually provided for each individual monument, comprise the main imperatives underpinning the creative approach of Dagestan sculptors and architects working on the improvement of our capital city.

Objectives. Secondary raw materials comprise a valuable means of offsetting previously realised investment and energy costs; moreover, due to not requiring funds for quarrying and processing of raw materials, their use is typically more cost-effective than the development of primary natural resources. The development of new efficient composites based on secondary resources for high-rise construction is a relevant issue.

Methods. The production of high-strength concrete is based on modern technological methods that improve the technical and physical-mechanical properties in the integrated use of technogenic raw materials and effective chemical additives.

Results. In this paper, prospects for the use of technogenic raw materials generated by the CHP plant of the city of Grozny in combination with rock crushing waste are described. The natural and technogenic raw material base of the Chechen Republic has been studied and the formulations of ash cements and compositions of high-strength concrete V60 classes for compressive strength with complex use of natural and technogenic raw materials for introduction into the construction of high-rise complexes were obtained.

Conclusion. The use of fly ash and Polyplast superplasticiser has a favourable effect on formation processes of the structure and porous space of cement stone with an optimal additive proportion of 1.6%. The complex use of secondary resources made it possible to obtain a waterproof and high-strength composite having significantly better physical and mechanical properties than traditional concrete. The developed formulations of ash binders and concretes based on fine-dispersed ash microspheres and enriched artificial aggregates promoted recycling of secondary raw materials and improvement of the ecological situation in the region.

Objectives. The article is devoted to relevant issues associated with the use of communication networks in the organisation of material and technical support for construction enterprises. The expediency of disclosing the role of communication networks in construction is due to the fact that the level of development of communication links at the enterprises where the studies were conducted is low and lacks consistency. The aim of the research is to establish methods for implementing communication functions in the field of material and technical support due to factors that promote the growth of competitive advantages and increase the management efficiency of construction enterprises.

Methods. The theoretical basis for the study consisted in the foundations of management theory, construction economics and logistics. The study is based on an investigation of the importance of communication networks in the organisation of material and technical support for construction enterprises. The application of analysis, observation, survey and interviewing methods allowed the creation of an integral portrait of the internal and external system of communication links in the sphere of organisation of material and technical support for construction enterprises in the Republic of Dagestan.

Results. The results of monitoring the organisation of the logistical support function for construction enterprises in the Republic of Dagestan showed that significant obstacles continue to prevent the establishment of necessary contacts between the subjects of management, hampering the formation of optimal management decisions at all levels. It is shown that an improvement in methods for organising communication networks facilitates timely purchase of material resources, ensuring a correspondence between the quantity of supplies and demand for them. The creation of necessary contacts in the course of the implementation of material and technical support functions and consequent optimisation of management decisions will improve the efficiency of construction companies.

Conclusion. The formation of communication links in the material and technical support of construction companies optimises the number of suppliers of raw materials and materials, reduces production costs and promotes the development of the closest contacts between all stakeholders, ultimately increase the output of competitive construction products.

Objectives The article is devoted to a highly topical issue, the solution of which will allow the existing toolkit for evaluating the import substitution programme in Russia to be improved. The aim of the study was to analyse the practice of applying aspects of import substitution at the regional and country level, as well as to define the objectives and expected results by 2020. The subject of the study consisted in the potentialities and limitations of implementing the import substitution policy as a means of stabilising the economy. The main problems of import substitution in all sectors of the country's economy were identified, conclusions drawn up and proposals developed to address these problems.

Methods When writing the article, general scientific cognitive approaches were used in conjunction with experimental and theoretical methods to define goals, problems and expected results of import substitution policies and methods for their achievement, as well as to highlight the most important tools for supporting import substitution projects.

Results The detailed results of the research are made available for supporting the implementation of the import substitution policy in the most promising sectors of the economy. The scientific novelty of the research consists in the formulation, theoretical substantiation and resolution of a set of issues related to the systematisation of existing instruments for supporting the policy of import substitution as well as with the problems of the choice of methodological tools and adaptation to Russian realities. The recommendations on the importance of import substitution contained in the article, which are characterised by various examples adapted to Russian conditions, may be of practical interest to the economy of all regions as well as the country as a whole.

Conclusion The developed provisions can be used in the formation and implementation of an effective import substitution policy, taking into account all the specifics and problems of implementation.

Objectives. The purpose of the study was to systematise the theoretical and organisational and economic foundations of stimulating the development of construction production, the implementation of which contributes to the long-term functional effectiveness of construction organisations under the conditions of economic modernisation as well as the development of a set of practical measures to improve existing forms and methods for stimulating the development of construction organisations.

Methods. Over the course of the research, general scientific approaches were used, including a system approach based on analysis and synthesis, graphical and statistical analysis methods.

Results. The priority goal of state policy regarding the development of the construction industry is defined, namely the provision of an optimally safe and comfortable environment for the lives of residents. To achieve this goal, special attention is paid to the formation of an effective mechanism for stimulating the development of construction production to ensure the long-term economic growth of the industry and the economy of the country as a whole. It is shown that under modern conditions, when high demands are placed on the process of stimulating the development of construction organisations and problems of ensuring its effectiveness are identified, issues relating to the classification of stimulation methods, conditions and factors disclosed in this article become especially important.

Conclusion. It is confirmed that stimulation as a management function contributes to the dynamic economic development of construction organisations. The formation of a system for stimulating the development of construction organisations is associated with the implementation of a competitive development strategy that provides for the transition of construction organisations to innovative transformations, as well as to the application of new technologies and the expansion of market niches.

Objectives. The purpose is to study the present state and developmental prospects of the rural built environment infrastructure and to assess its impact on the sustainable growth of regional socio-economic indicators on the example of the Perm Territory.

Methods. Research methods included the system approach, situational analysis, the formal-logical method and the dialectical method of studying social and economic processes.

Results. The important role of the built environment infrastructure in the socio-economic development of the regions is demonstrated. It is established that the creation of the built environment infrastructure in rural areas contributes to the increase of employment, providing a comprehensive effect for strengthening national security, increasing the incomes of the population and developing business structures. The primary measures for creating the infrastructure include the technical equipment of the construction industry. Equally important is the communal infrastructure, which affects the quality of products as well as providing sanitary and hygienic working conditions. A special role belongs to transport security, since the quality and availability of transport and logistic networks depends on the efficiency of marketing activities, supply, optimisation and compliance with production times.

Conclusion. The investigation of the infrastructure of the construction industry makes it possible to identify problems related to the transport security of the primary processes, including high production costs and lower profitability of developers in remote and rural areas that are not adapted for the organisation of an uninterrupted production cycle. Rural territories are in acute need of the implementation of state programmes comprehensively aimed at transforming the socio-economic space and infrastructural growth. The systematic organisation of the investment process will contribute to the improvement of the quantitative and qualitative characteristics of infrastructure facilities and support construction development, ensuring a decent standard of living for the population through increased wages and employment of rural residents. The solution of the basic infrastructural problems related to construction in rural areas of the country can be facilitated by the orientation of state policy towards the economic security of individual regions, the simplification of the supply system of products from the producer to the consumer without loss of quality and the development of transport and logistic networks.