Introduction. Questions of the maintenance of territories and road network in winter conditions are directly connected with timely and qualitative clearing of roads and territories of snow. Designing and creation effective milling and rotary snowblowers, which work includes some technological operations on snow cleaning, consist in a correct choice of geometrical and kinematic parameters of basic elements. At a design stage the technique, allowing to carry out a choice of the basic technological parameters of such vehicles is necessary and further it would allow to make optimization directly. The purpose of this paper is representation of dependences of the basic technological parameters of the milling and rotary snowblowers and sequence of their choosing.

Materials and methods. The paper presents analytical equations connecting geometrical and kinematic characteristics of the feeder, the thrower of milling and rotary snowblower from conditions of maintenance of identical productivity. Moreover, the analysis of the received equations and dependences by choice milling and rotary snowblower parameters is presented. Sequences of the basic geometrical and kinematic parameters’ influence on each other are revealed.

Results. As a result, the comparative estimation of the offered and existing equations is made. The character of dependence of angular speed of the throwing device rotation on translational speed of the milling and rotary snowblower and width of the rotor blade is established. On the basis of the received dependences the algorithm of the basic technological parameters’ choice on the milling and rotary snowblowers, proceeding from the minimization condition of the initial parameters’ task are considered.

Discussion and conclusion. The presented dependences allow to spend effectively outline designing of new constructions of milling and rotary snowblowers and to carry out optimisation of existing models of milling and rotary snowblowers.

Introduction. The paper is devoted to the investigation of the D-type diesel engines’ start-up of the B-2 type under low temperatures, especially to the influence of the fresh charge temperature on the starting characteristics of the diesel engines. The Russian Federation is located in climatic zones with predominance of low ambient air temperatures and under extreme conditions. However, such situation is not adequately studied in scientific literature.

The main problem is in the search for rational values of the temperature of the fresh charge at the beginning of the compression stroke. The increase of such temperature leads to the decrease in the oxygen mass, and to the decrease to an insufficient temperature at the end of the compression stroke and, as a result, it would not provide ignition. Therefore, the aim of the research is to substantiate the rational values of the fresh charge temperature and further practical implementation of these values at modern BTWT facilities.

Materials and methods. The author uses standard theoretical and theoretical methods based on widely approved dependences of the piston internal combustion engines’ theory, gas dynamics and thermodynamics, which have been refined taking into account the features of the diesel engine start. Results. As a result, the author determines rational values of the fresh charge temperature, makes the analysis of the pre-launch preparation and facilitating of the D-type diesel engines’ start-up and demonstrates the method of increasing and further stabilizing of the temperature of the inlet charge at modern BTWT facilities.

Discussion and conclusion. The research confirms the rational values of the fresh charge temperature, by using of which the diesel has the best starting characteristics. The author also proposes a technical solution for values’ realization by using a vortex induction heater.

Introduction. The authors conduct the research of the urban passenger transportation problem. Municipal authorities and passengers are regarded as participants of the passenger transportation system. Moreover, the municipal authorities have to optimize road width and public transport frequency. The road consists of a bus lane and lanes for personal vehicles. The vehicle travel time depends on the number of road lanes and passengers’ choice of the travel mode. The passengers’ goal is to minimize total travel costs, including time value. Therefore, the passengers try to find the optimal ratio between public transport and cars.

Materials and methods. The mathematical model for choosing the mode of transportation is based on the exponential distribution of the passenger cost. Time of movement on personal transport is described by the BPR model. The conflict between municipal authorities and the passengers is described as a theoretic model.

Results. The existence of Nash equilibrium in the model is proved. In addition, the numerical example shows the influence of time value and intensity of passenger flow on the equilibrium of the road width and of public transport frequency.

Discussion and conclusions. The presented model allows optimizing the capacity of the road network in conditions of allocated lanes for public transport and the choice of transportation for passengers. Further research would be aimed at managing the number of parking spaces.

The task is also to generalize the model of the urban passenger transport network, directions and intersections, which describe the real city roads.

Introduction. The authors prove the relevance of the costs’ reducing for motor transportation service in different departments of the industrial enterprise. The organizational and technological features of the industrial motor transport enterprise functioning and defining inexpediency of transfer of motor transportation function on outsourcing in full are revealed. The economic-mathematical model and the algorithm of decisions development on optimization of the automobile transportations costs in the industrial enterprise, which provide balance of interests of the customer to lower costs of motor transportation services and of the carrier to increase business profitability are offered. The expediency of implementation of such recommendations is proved on the example of motor transportation department of the large metallurgical company in Chelyabinsk region.

Materials and methods. The analysis and systematization of the specialized scientific, standard, legal literature, economic-mathematical modeling of transport processes, and statistical technical and economic analysis of production information is conducted.

Results. The following results are reached:

-              having scientific novelty: criterion of optimality and system of restrictions of the choice of decisions on cutting of costs for automobile transportations; mathematical apparatus of assessment of reserves of use of motor transport;

-              having the practical importance: the algorithm of development of decisions on optimization of costs of automobile transportations based on balance of interests of carrier and the customer of motor transportation services.

Discussion and conclusions. The methodical recommendations about coordination of the customer and supplier interaction of motor transportation services are received. The implementation of such recommendations would provide the systematic 3-5% per year budget optimization in the industrial enterprise departments.

Introduction. Two methods among five in regulatory documents of the Russian Federation can be interested for assessing the quality of traffic management by environmental indicators. Only such methods take into account the parameters of the traffic flow that affect the volume of emissions. The parameter influencing the results of calculations in both methods is an average motion speed. Moreover, there are areas on urban highways, where traffic moves unevenly (braking, dispersal, stopping). Therefore, such factor entails an increase in the volume of emissions from vehicles. At the same time, this uneven movement is largely due to the existing organization of traffic (TO) on certain elements of the street-road network (SRN). Accordingly, the method for calculating pollutant emissions to assess the quality of TO, which take into account the unevenness of traffic flow, should be developed.

Materials and methods. The paper proposes to take into account the average speed of traffic in those parts, where the traffic flow moves stationary, and on the elements of the main traffic line, where the traffic flow is non-stationary, and to take into account additional emissions. Moreover, the additional emission from the traffic flow should be considered separately in the following cases: if the cars stop (there are deceleration modes, idling and acceleration) and in the situation, when cars decrease their speed (slowdown and acceleration).

Results. As a result, the difference between calculations of carbon monoxide emissions by the proposed method and by the GOST methodology is 57%, and for emissions of nitrogen oxides is 94%.

Discussion and conclusion. The proposed methodology allows accurately assessing the quality of the TO on the section of the urban highway and its individual elements on environmental indicators. In addition, the proposed methodology would allow carrying out calculations for the evaluation of road traffic projects and activities, which aim to reduce the harmful impact of traffic on the environment of the highway areas.

Introduction. The problems of congestion, ecology, and road safety in most of Russia’s major cities have been accumulated in the paper. Strategic planning documents aimed at updating the gene plan, improving the transport and route network, improving traffic safety, improving environmental performance and accessibility for people with disabilities are sent for such important problems solution. The paper presents the results of the scientific research conducted in large cities of Russia. Moreover, the review of the literature is presented, and the achievements of foreign science are taken into account.

Materials and methods. Modern approaches to improving the system of public transport are given, the efficiency of high-speed transport modes, the organization of transport services for the disabled and low-mobility groups, traffic safety, ecology, and the implementation of the “Transport Strategy of the Russian Federation until 2030” are approved. As a criterion for the efficiency of improving the transport infrastructure, the level of its loading by various modes of transport is used.

Results. The problems of influence of the city form on the formation of the transport frame, of the density of settlement and of the efficiency of urban development are considered. New methods of predicting the transport demand of the population, the level of the transport systems’ development and assessing accessibility are proposed. Therefore, the developed algorithms and recommendations for reducing the volume of transport infrastructure helps to improve its performance and availability. Such effect is achieved through the redistribution of transport and passenger flows between different modes of transport.

Discussion and conclusion. The authors comes to the conclusion that it is necessary to improve the regulatory and methodological base of the transport industry constantly, improving the performance of the transport infrastructure of modern cities.

Introduction. The urgency of transport modeling, which is the basis for the implementation of various technical solutions aimed on the automated traffic control systems usage based on a new generation of road controllers, is noted. The circumstance according to which the transport modeling acquires essentially dynamic approach is specified. The aim and the problems of the study are formulated, consisting in the generalization and formalization of the tasks of transport modelling.

Materials and methods. To solve such problems the author uses methods of system analysis, theory of transport systems, as well as techniques that are widely used in the community of transport engineers, including various options for computational and experimental methods of modeling traffic flows and transport systems for the city or agglomeration.

Results. On the basis of generalization of information about stages of transport modeling the sequence of actions leading to obtaining the required transport model, by means of which it is possible to carry out the decision of a specific task, is offered. The list of the main tasks of transport engineering is formulated, the importance of the dynamic approach and the special role of the theory of transport macro systems are indicated, according to the provisions of which stochastic processes at the micro level lead to the deterministic behavior of transport systems at the macro level.

Discussion and conclusions. The main result of the research is the development of the control actions for the operation of the intelligent transport system that evenly distributes traffic flows through the network and prevents the occurrence of congestion in real time. The basis for it is the formulation and solution of various problems of transport modeling.

Introduction. The paper considers the results of surveys taking into account the efficiency increase of passenger traffic in a small town. The need to regulate the work of carriers of various ownership forms, taking into account the characteristics of urban routes, determines the relevance of the research in this area. Therefore, the purpose of the survey is to clarify the total size of the movement of the zones and the city as a whole for the further projects’ development of the road network planning and for the passenger traffic development.

Materials and methods. The paper considers alternatives to passenger surveys, i.e. application of the most optimal variants of the transportation plan. The characteristics of the route and load on the routes of Kyzyl are also illustrated. The author uses the methodology of surveying the population transport needs in a small town, in particular, the counting of passengers.

Results. As a result, the author conducts the survey of passenger traffic, taking into account the city specific. The characteristics of the route and the load on the routes of Kyzyl are studied. It is important to use the methodology of the transport needs and transport services for population in a small town.

Discussion and conclusions. On the basis of the conducted surveys of passenger traffic, the average hourly volume of transportation on routes is revealed and the unevenness of traffic volume is calculated.

Introduction. There is a need for detailed consideration of technological solutions of the constructed object while the process of the work projects’ development (WPD). The features of WPD development are considered on the basis of the flare tower as a part of the flare installation of the oil refining enterprise. The problems of organizational and technological design (development of WPD) for such facilities’ type should be solved many times due to the fact that there is a modernization of oil refining enterprises in the country. Moreover, the obtained results of calculations allow conducting more rational technological solutions for the construction of the flare tower and such solutions affect the period of the flare installation.

Materials and methods. The technology of the flare tower construction as a part of the flare installation is quite complex due to the features of the unique structure and cramped construction site. Accordingly, the choice of technology for the flare tower construction is made by using the features of its design solution and by the detailed consideration of options for installation mechanization. The options are evaluated by using an economic criterion (reduced cost). The calculations are based on modern installation cranes recommended for usage on this type of unique structures.

Results. As a result of technical and economic calculations of the flare tower construction technology, the method of its construction is chosen due to the rational version of installation mechanization. The paper presents the calculations’ results of the given costs and the technical characteristics of the cranes. In addition, the technology of the flare tower installation is organized with the method of the tower blocks assembly.

Discussion and conclusions. As could be seen, the construction technology by the mixed scheme on the chosen option is developed by the authors.

Introduction. The paper deals with the issues related to the determination and registration of the own thermo-stressed state formed in concrete while hardening and used to provide the required consumer properties in the Crimean bridge construction. Therefore, the problem is relevant because of the deadlines for the construction of such facility in the conditions of rough terrain and dry hot climate, and also taking into account the development of the unique non-class facilities in Russia.

Materials and methods. The research is carried out in real-time conditions with the usage of modern measuring systems in practice, allowing to control the process of temperature and strength of hardening concrete in time. The modern computational and analytical complex, which is repeatedly tested under real conditions and by thermophysical calculations of hardening concrete of various class objects and massiveness, is used.

Results. The results of the intrinsic thermo-stressed state of hardening concrete are presented in determining the permissible temperature gradient, which make it possible to accelerate the process of erecting the object with observance of the necessary consumer properties.

Discussion and conclusion. The main conclusions and suggestions are made taking into account the intrinsic thermally stressed state of the concrete when it was hardened during the construction of the Crimean bridge. The paper would be interesting and useful for engineers and technical workers engaged in real production conditions, and for specialists dealing with the issues of the thermophysical processes occurring in concrete hardening and with the problems of ensuring the high consumer concrete properties in structures.

Introduction. Experience in the design and construction of beam structures of wooden bridges with composite girders indicates the possibility of increasing the bearing capacity and the length of the overlapped spans.

Materials and methods. The most rational load-bearing elements of composite girders can serve as the logs edged on two edges with the diameter of 28 to 32 cm with the maximum use of the most durable layers of sapwood and dowel connections of steel plates with blind cylindrical nags.

Results. In contrast to the compounds of composite girders on lamellar nails, the proposed connection greatly simplifies the process of making the composite girders. Such connection also allows using the logging along the length, combining into three or four tiers and increasing the length of the span.

Discussion and conclusion. The proposed solutions increase the load-bearing capacity of composite girders and allow them to be used in the structures of wooden bridges under modern automotive loads. Moreover, the calculation method of composite girders on the basis of the method of forces and discrete placement in the beams between the logs of concentrated elastic-datum shear bonds is developed.

Introduction. Construction objects of transport infrastructure have different influence and service conditions. An actual technical task is the design of optimal microclimate for human operation in workshops and office buildings. Therefore, such conditions can be achieved by using of construction material with high parameters of heat- and sound-insulation such as a gas concrete. The main task of the research is the improvement of heat- and sound-insulation in the gas concrete.

Materials and methods. The evaluation of the gas concrete efficiency is based on the research of such parameters as heat- and sound-insulation. The analysis of the material at macro- and micro-level is performed with SEM-analysis and BET-analysis. In addition, the complex of experimental and calculated data of physical and chemical characteristics for gas concrete is carried out.

Results. As a result, the usage of amorphous alum inosilicate raw materials in gas concrete allows variation of parameters to effect on pore structure such as homogeneous pore distribution in bulk, thickness and density of interpore partition, pore shape and pore size. The reduction of aerated concrete density by 22.5 % leads to reducing of heat conductivity by 19.26 %. The formation of cellular structure with mainly closed pores allows reducing of sorption humidity and vapor permeability of material under different environmental humidity.

Differently-sized pores in the gas concrete and predominantly small pores with size of 0.3-0.9 mm as well as with size up to 94,6 nm leads to increasing isolation index of airborne sound due to increasing of absorption of acoustic wave in frequency range of 125-4000 Hz. Complexly, it provides high sound-insolating parameters of wall envelopes.

Discussion and conclusions. Monitoring of heat- and sound-insolation of the gas concrete due to optimization of pore structure allows formation of energy effective composites able to protect humans from unfavorable environment in the transport enterprises.

Introduction. The article examines approaches to determining one of the most important characteristics of regional economic security - demographic potential. The correct interpretation of this concept makes it possible to monitor and develop political postulates of actions aimed at improving the socio-economic bases of demographic processes. The list of planned activities, built in accordance with the specified content of the concept of “demographic potential”, is adequate to the existing qualitative and quantitative characteristics of the population and would avoid crisis situations in the economy and social sphere of the region.

Materials and methods. The study of approaches to determining the demographic potential and its role in the formation of the labor potential of the territories, show the absence of unified methodological bases for estimating and predicting the processes of forming the demographic potential for different hierarchical levels of government. Moreover, the need to consider the concept of demographic potential is dictated by the increased attention to potential demography, on the one hand, as a scientific direction, conditioned by the study of internal dynamics and inertia of the population reproduction processes, and on the other hand, as a problem having practical significance in ensuring the functioning of regional employment opportunities for people.

Results. As a result, the research demonstrates the presence of a large number of approaches and formulations of the “demographic potential” concept, which are conditioned by different theoretical and methodological approaches to disclosure of the demographic processes content depending on the research objectives. According to the authors, at the current level of regional qualification of Russia, adjustments are needed in the mode of the labor potential reproduction due to the sharp increase in the outflow of population, especially in the Siberian regions. Demographic potential as an economic category requires in such conditions the increased attention of scientists and also political structures. It is the basis for the identification of hidden opportunities to provide population and population structure for different demographic characteristics.

Discussion and conclusions. The analysis and solution of the problems of the labor potential reproduction is now at the forefront of ensuring economic security of the regions. To ensure such problems is not possible without the presence and proper understanding of the content and conditions for the formation of the demographic potential in conditions of intensive migration between the Siberian and European territories of the country.

Introduction. The paper deals with organizational and institutional aspects and principles of building social and labor relations of the large economic system. Such research is determined by the urgency and contradictory of scientific views by solving problems in the transformation processes of the social and labor relations in the modern economy.

Materials and methods. Scientific materials of foreign and domestic scientists are used in the research. The author applies the system-axiological approach on the basis of the scientific methods’ combination, such as analytical, institutional and systemic. In addition, the concept of co-evolution is applied while considering organizational and institutional aspects of building social and labor relations.

The organizational and institutional problems of designing a new system of social and labor relations during the transformation period are discussed in the paper.

Conclusions. The author proposes four groups of principles, such as the principle of dynamic correspondence to value orientations of stakeholders and the goals of a large economic system, the principle of network based on institutional need, the principle of the balance of economic and social efficiency in the system of social and labor relations, the principle of flexibility and transformability of the social and labor relations’ system on the basis of co-evolution.

Therefore. The results could serve as the conceptual basis for the design of the social and labor relations in large economic system, as well as the strategy for the socio-economic development of corporations.

Introduction. The article is devoted to the study of the regional manufacturing industry of the Siberian Federal District from the standpoint of economic security. The purpose of the article is to analyze the manufacturing industries on the basis of the proposed indicators group and in the context of ensuring economic security of the Siberian federal district.

Materials and methods. The scientific methods of logic, comparison, as well as the method of the statistical materials’ analysis are used in the research. The analysis of the manufacturing industry was carried out in two groups of indicators:

1)            indicators determining the socio-economic importance of the manufacturing industry for the region;

2)            indicators of the export potential of the regional manufacturing industries, contributing to the development of the region.

Results. The main results of the study are in identifying the regions of the Siberian Federal District, in which the manufacturing industry is the most important component in supporting the development of the region and maintaining its economic security. Moreover, special attention is paid to the contribution of manufacturing industries to the socio-economic stability of the Omsk region.

The paper touches upon the theoretical and methodological provisions related to the study of the role of manufacturing industry in the development of the country and its regions and in improvement of methods for assessing regional economic security. The author proposes the group of indicators that allow more accurately reveal the impact of manufacturing industry on the socio-economic condition of the region.

Discussion and conclusion. The conducted research allows supplementing the existing scientific directions with the approach, which clarifies the assessment of the manufacturing industry with an analysis of its export potential indicators, in order to expand the comprehensive understanding of the most problematic points of regional development from economic security point of view.