The technology of timber in the forest Fund has a significant value on the cost of production of round timber. Therefore, this task is urgent and most important for logging companies. It is important to pre-determine the criteria for evaluating the effectiveness of the technology of logging operations. It is, above all, efficiency, environment and safety work. In this article studies in some detail their implications for production, workers and the natural environment, which improves the validity of the decisions on the selection of variants of technical and technological organization of the timber industry. The practical significance of the use of evaluation criteria logging is technically focused on improving outcomes for timber production and increasing economic-social and ecological-silvicultural sustainability of the forest sector of the Russian economy. A detailed analysis of the evaluation criteria logging technology allows not only to consider them from the point of view of efficiency, which in most cases occurs, but equally take into account the impact on the environment and safety in the logging operations.

Keywords: logging technology, logging work, the Krasnoyarsk territory, the evaluation criteria, production efficiency, environmental works, security works, a comprehensive use of wood, the technology of logging operations, wood processing

This paper presents the reasons of the choice of factors "the household income" and "the car owning period" in car ownership reserching.

Keywords: car ownership, automobile's quantity

Obtained a simplified mathematical model of generation of the aerosol. Theoretical and experimental dependence of the convection current on the parameters of the generator, from its basic design parameters.

Keywords: the aerosol, convection current, electric field, space charge, dispersion, electrode potential, charge, drop, generator, field strength

One of the main tasks when organizing workflows of logging transport is the choice of log truck optimal type for logging under specific operation conditions. The method proved by the authors and engineered modelling program of log trucks traffic parameters give an opportunity to accomplish engineering tasks of the choice of logging transport type to operate under various natural-industrial conditions for certain. The example of the log truck optimal type choice is given.

Keywords: logging transport, grade computations, traffic parameters, performance, import substitution

The article describes algorithms for constructing learning management system for the organization of individual student learning. This training takes place throughout training and is based on the multidisciplinary integration and internal differentiation. Also in the article describes the construction of such systems. We present an automated build environment of individual trajectories of student learning, developed by the authors and registered at the Federal Institute of Industrial Property, graphic model of the system, describes the algorithm proceeds and bonds, based on the theory of finite automata, the realization of the system design and implementation of the results in the learning process studentovdannoy system and the results of the implementation in the learning process of students.

Keywords: learning management system, the theory of finite automata, algorithms transitions, algorithms connections, automation training, individualized training, differentiated training

Article is devoted to a subject: in space some closed curve is set; among all possible surfaces passing through this curve to find such for which the part it concluded in a curve would have the smallest area. Curvature of any curve on a surface is equal in the set its point to curvature of flat section of a surface the adjoining curve plane.

Keywords: minimum surfaces, modeling, 3 fabric, curvature of a surface, equation of average curvature

The article describes and analyzes how to determine the thermal residual stresses. The conclusion, based on the analysis, showed the necessity of the calculation method for determining the residual stresses, which is based on a mathematical model of the formation of residual stresses and deformations occurring during heat treatment. The results of calculation of stresses and comparison with experimental data are given.

Keywords: residual thermal stresses, finite element method, heat treatment, low-hard details

This paper presents the study of conveying systems in the technologies of harvesting of grain crops. The analysis of existing trends of modernization and quality of the grain conveyor material after shipment. Quality indicators of wheat seeds during its transportation. Studies on injury of wheat at variii different types of conveying systems.

Keywords: working bodies of the transporting device, the degree of injury, seed

This article presents a study on the issues of improving the quality of seed germination of grains in terms of injury and in the offices of the conveying device by varying the main working body.

Keywords: cereal seeds, polymeric material conveying device with conveying type

Linear surfaces of congruence of parabolic rotation which sections are Equiaffine figure (the secant plane is parallel to the plane xOy) are described. The coefficients of quadratic forms of surfaces are determined. A special case of the surface is considered which is obtained by immersion of a circle in a parabolic congruence. The relationships of equi-affine transformation of a circle and the location of the secant plane are determined.

Keywords: linear surface, a congruence of parabolic rotation, Equi-affine transformation,quadratic form, invariant, parametric equations

The article includes analysis of the freight market in the Russian Federation. There are factors that influence the choice of transport for the cargo transportation. The author reviewed the cost structure of road transport. The article presents the method of calculating the cost of railway transportation and the cost of rolling stock. The author reveals factors affecting the cost of rolling stock. The analysis of the competitiveness of rail and road transport. As a result, concluded that the need to develop measures to improve the competitiveness of rail transport, to improve the reliability and continuity of rolling stock`s providing to consigners, as well as the construction of a model where the JSC ""Russian Railways"" acts as a regulator of the availability of rolling stock on the network.

Keywords: freight transportation, competitiveness of transport, road and rail transportation, the provision of rolling stock, railway fare

analysis of the conditions of movement of vehicles on the roads has shown that special difficulties arise in the winter. This is due to the quality of the work of snowplows. One problem is the snow removal for road barriers. In line with this, and considered the possibility of the need to improve, creating a Russian-made snow plows. Based on the analysis of schemes snow removal from roads, structures working bodies with piles of snow plows, proposed a new design that allows for snow removal for road barriers, as well as the proposed use of a working body under a snowplow clearing patrol roads. At the expense of achieving the universality of cars increased their rate of use and, therefore, the payback period. The effectiveness of implementation of the new structure of the working body of the snowplow is achieved by reducing the amount of used equipment and passes undertaken during snow removal

Keywords: Blade, modernization blade, snowblower, snow removal from roads, road protection

The phenomenon of buckling under the creep of concrete arches was investigated. Solution of the problem carried out by means of the finite element method. To analyze the stability we used Newton-Raphson method. It has been established that there is a long-term critical load, beyond which the growth of the deflection has not fading character. As the equation of the relationship between the creep deformation and strains we used viscoelastoplastic hereditary model of aging concrete. To determine the creep strain we used a linear approximation with respect to time. It was found that the long critical load for considered arch was in 1.44 times lower than the instant critical load.

Keywords: reinforced concrete arch, stability, creep, geometric nonlinearity, finite element method, Newton-Raphson method

The problem of infrastructural limitations of approaches to the sea ports of the Southern region is considered in the article. The analysis of handling and carrying capacity of railway and port infrastructures is given. The calculation of available and needful carrying capacity of railway sections is carried out. The construction of double-track spans on the final stage of design of the approaches to the transportation junctions is suggested.

Keywords: transportation junction, railway infrastructure, sea ports, the growth of traffic flow, efficiency of investments

The article describes the working conditions of earth-moving machinery. The main ones are climatic and groundwater. At the same time in different conditions the potential of machinery is not used efficiently, ie they do not dogruzheny of the energy supplied in the working process of interaction of the ""working body - the ground"" or overwhelmed. It was determined that the basic properties of machines that determine the quality of reliability, and adaptation to the operating conditions. On this basis, it is determined that there is a possibility to increase their efficiency by adapting the machine to certain operating conditions. In this regard, necessary methods and means for correcting the energy impact of the machine on the ground in its development. This problem is solved by studying the laws of interaction of the working body digger ground. And on this basis the development of control actions on machines (changing its operating speed, cutting depth, cutting angle)

Keywords: digger, adaptation, adaptation, development of soils, working body, working conditions

The purpose and objectives of this work is to develop methods of planning the path of the mobile autonomous robots operating in environments with unknown location of obstacles. The result of the article is vague planner travel path of autonomous mobile robots for three-dimensional space (3D environments). The results differ from known analogues structure proposed planner, consisting of two interconnected parts, designed for use in horizontal and vertical planes, context-sensitive coordination method "simple" behavior of the mobile robot, a set of rules governing the method of prevention "jam" in the obstacles.

Keywords: Quad copter, management, uncertainty, decision making, fuzzy logic

The paper presents a method for forming exact self-similar solution of the problem of calculating the compliant hydrodynamic journal bearing of finite length, running on layered lubricant in the axial lubrication. On the basis of the equations of motion of a viscous incompressible fluid, continuity equation and Lame equations for the case of a "thin layer" found the velocity and pressure, analytical expressions for the components of the supporting forces, the forces of friction and resistance forces axial movement of the lubricant. The analytical expressions for the value of the lubricant in the axial direction. The estimation of the parameters characterizing the ratio of the viscous layer adapted profile and the deformation of the elastic layer on the basic performance of the bearing. Established the most rational of the bearing capacity, the force of friction and lubricant consumption values ​​of these parameters.

Keywords: radial bearing, load bearing capacity, stratified flow

In this article the problem of complex transport service of passengers in the suburban and city message is considered. Possible options of the organization of a trip on the direction Rostov-Salsk are defined. Use of intermodal transport systems will allow passengers to choose ways of the organization of a trip taking into account personal requirements, such as, the speed, comfort and the price. In article the package of measures on improvement of transport service of the population on the direction Rostov-Salsk is offered.

Keywords: Railway transport, efficiency, competitiveness, transport service, the suburban and city message, intermodal transport system, customer focus, time at ways, comfort, speed

In the article the modern technological methods to improve the strength of crankshafts. Proposed experimental scheme of strengthening and stabilizing vibromashining of machine crankshafts. It has been established experimentally that the vibration impact processing is achieved by uniform hardening of the surface layer of all elements of the details, finish and rounding of sharp edges, smooth transitions, the exclusion of non-rigid shafts with leashes in the electoral obkatyvaniem of radius machining of large parts.

Keywords: crankshafts; technological schemes; vibrowave processing; stabilizing handling; hardening treatment

In the article a conditions and requirements of modern engineering business are underlined and in this connection main objectives and problems are considered at preparation of necessary specialists. In this work the course maintenance «Physics and natural sciences» for the bachelors prepared in a direction «Innovatika» reveals. The importance of fundamental positions and physics principles is especially underlined by consideration of various is natural-scientific displays. As examples of realization of special methods of teaching of the given course presentations of lecture and seminar employment are presented. The presented discipline allows to study the phenomenon and objects diversified by the nature and complexity and to do the conclusions about their dynamics and evolution.

Keywords: Innovatika, Natural Science, Boundary Control, Physical Practical Work of Students

The present work is devoted to development of methods for the synthesis of alkoxides of alkali metals. The main factors determining the rate of reaction of sodium with alcohols is a contact surface area solid and liquid phases and the power of the appropriate alcohol as acids. We studied the dependence of the rate of interaction of sodium metal with a variety of alcohols from their acid dissociation constant pKa. To slow the rates of interaction of sodium and potassium with alcohols were used their amalgams. Amalgam was obtained by electrolysis of sodium hydroxide and potassium hydroxide. The interaction process alkali metal amalgam flows quietly enough, even in the case of methyl alcohol and potassium amalgam. Technological scheme involves three stages: the electrolysis of sodium hydroxide at ordinary electrolytic with flowing mercury cathode; an anodic dissolution of the amalgam in an alcohol solution and recovering the sodium or potassium alkoxides. The proposed method allows the synthesis of sodium and potassium alkoxides in soft and controlled conditions.

Keywords: synthesis of alkoxides, sodium alkoxides, potassium alkoxides, electrochemical synthesis method

This article deals with the problem of queues of cars, grain terminals, waiting for treatment. A comparative analysis of the level of mechanization of grain terminals SFD, as well as waiting time by truck handling them. Make recommendations to the terminals that reduce latency and eliminate unauthorized parking.

Keywords: grain terminal, the waiting time processing all of the trucks pre car park.

This paper presents a method of calculating the hydrodynamic radial slide bearing runs on the lubricant that has both viscoplasticity properties. When developing the analysis model as the initial equations the nonlinear Maxwell model with the existence of the limit shear stress. Asymptotic solution of the problem was found in even powers of the parameter due to the presence of limiting shear stress of the lubricant. Found the velocity field and the pressure in the lubricating layer obtained analytical expression for the bearing capacity of the bearing. The estimation of influence of parameters characterizing the elastic properties of the lubricant (the Deborah number) and a dimensionless parameter characterizing the viscoelastic properties of the lubricant parameter (plasticity) on the bearing capacity of the radial bearing.

Keywords: radial bearing, bearing capacity, ultimate shear stress, the parameter of plasticity, deformation

Working out and research of rational methods and means of increase of efficiency of machining when milling end face surfaces of disks, in particular for premachining have been considered.

Keywords: cutting modes, machine tool, methods of metal machining, premachining, the parameters of cutting layer of metal, the cutting force

The evaluation of degree of soil pollution the Lower Don and the Azov Sea region by nickel (Ni). Given the main geochemical characteristics of the item, its impact on human health at concentrations exceeding the MAC. Considered the main sources of Ni in the geological environment of the Rostov-on-Don city; analyzed migration routes. Allocated and described lithogeochemical anomalies with the contents of the element 1 to 3.5 MAC. Calculated basic geochemical criteria, according to which the identified categories by degree of soil pollution.

Keywords: heavy metals, migration, dispersed rocks, soils, concentration, technogenic sources, waste water, pollution, lithochemical anomaly.