Graf-lattice has vertices at points with non-negative integer coordinates. From each vertex has two arcs: horizontal and vertical neighboring vertices (right and top). The transition probability for each of the arcs is equal to ½. Consider the problem of random walks on the vertices of the graph, without limitation on the achievable and with two types of limitations on achievable - mixed and magnetic. There is some combinatorial identities containing binomial coefficients from different layers of Pascal's triangle.

Keywords: directed graph, random walks, the probability of transition, achievable tops, Pascal's triangle, combinatorial identity

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

In the framework of the given article shall be considered a negative impact on microorganisms of ions of zinc, copper and Nickel concentrations in the incoming wastewater to the wastewater treatment facilities of the cities of the Lower Volga region is unacceptably high, which inevitably reduces the quality of the purified water at the indicated metals exceeding the output after biological treatment is more than 30 times). Further, in the proposed article, we describe the results of studies aimed at disposal and treatment of waste activated sludge. The first attempt to use the resulting after biological purification of waste as a secondary raw material for the adsorption material, which retrieves the designated heavy metal ions from wastewaters prior to biological treatment, which allows further the activated sludge fully interact with other ions without losing their functions. As a result, after the biological cycle treated water at the indicated metals, meets the relevant standards.

Keywords: urban wastewater, biological treatment, heavy metal ions, sorption, activated sludge, adsorbent, filter segment

The calculation of technological and economic losses caused by emission of electrolysis hydrogen in the atmosphere is made. The flow of oxygen and air during the combustion gases and the amount of simple combustion is calculated. The ways of economically viable utilization of associated hydrogen would increase the level of environmental safety of the process are revealed. We consider the use of hydrogen produced during electrolysis of sodium hypochlorite solution to produce hot water for the needs of the enterprise. Proposes the use of snow in the territory of the water supply enterprise as a backup element for the implementation of resource-saving technologies for potable water.

Keywords: electrolysis, hydrogen, sodium hypochlorite, natural gas, economic loss, air, heat of combustion, hot water, energy potential, electrolysis station, water treatment, equipment for melting snow, resource-saving technology

А key element in the system of public administration by labor protection is receiving reliable information about a condition of working conditions depending on levels of influence of harmful and dangerous production factors. Instrumentional monitoring of workings conditions on workplaces is carry on production control of harmful production factors and procedure of a special assessment of working conditions by test laboratories. Thus one of the tasks demanding the decision is development of algorithm of process of a choice of the measuring instruments satisfying areas of accreditation of test laboratory and to the state requirements to performance of these works. For the solution of an objective the author offers a technique of an optimum choice of the instrument equipment which basis the method of expert evaluations (rank correlation). According to basic provisions of a technique in scientific work the algorithm of process of a choice of measuring instruments for carry on of instrumental control of harmful production factors is presented. Criteria of a choice of devices are considered. The mathematical model of process of a choice of measuring equipment including ranging of criteria of a choice of devices is described. According to results of ranging the leading, essential and less significant criteria of a choice for the instrument group participating in experiment are defined. In view of the leading and essential parameters of a choice of the equipment, the complete set of test laboratory by the necessary instrument equipment, according to area of analytical tasks and conditions of measurement install.

Keywords: instrumental control, monitoring of harmful factors, the method of selection of equipment, means of measurement, method of expert estimations

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

Distortion assessment of a wavelet-based watermarking method for low frequency subband

Keywords: information security, steganography, wavelet transform, data hiding, multiresolution analysis, the watermark, PSNR

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 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

The article describes the experimental setup is designed to test the ability of manage the ultrasonic beam as it passes through the layered media. In this paper we consider a methodology of research, justified the choice of material for the simulation layers of biological tissues. The article describes the characteristics of the developed installation and positioning methods acoustic transducer. Solution of the experimental research allowed us to estimate the deviation of the "maximum" acoustic pressure (in the transverse distribution) by passing through the layered media and to determine the influence of the sound velocity in the transition layer on the distribution of acoustic energy in the region of space.

Keywords: Ultrasound, experimental assembly, layered medium, refraction.

Motivation of young workers is an important research and applied problem. The need for effective motivation of this category of labour resources is dictated by the inevitability of personnel update and market relations. This article reveals the results of a study of motivators and demotivators labour youth activities in railway transport carried out by the author's method. In this article shows the specific of motivational sphere of young men.

Keywords: Motivation, motivator, demotivator, young worker, railway transport, reform.

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

In the article, we prove the efficiency and versatility of the method of the cross structures of the building mounting by bolting junction of angles rigidly fixed to the vertical and horizontal walls of the rods. The advantage is the ability to apply this type of mounting in dynamically loaded constructions.

Keywords: Node joints, cross design, spatial frames of buildings and structures, tubular profiles of rectangular, concrete pipe elements

The problem of human security in the modern world has become extremely important. The aim of our research is to study the culture of health as a component of psychological safety of the person. We stick to the personal approach and consider the psychological security from the perspective of the subjects of interaction. Building a culture of health should also include certain activities to enhance the reserve capacity of the organism, formation of sense of security and freedom of expression. In the proposed structure of the culture of health provided: Move subject to a positive picture of the world, including changing the point of view of his position in it, the construction of an optimistic life prospects of personal and professional development; optimization of its interaction with the environment, including daily and professional activities, expansion of ideas about the possibilities of his body, the mastery of techniques of self-mental state, purposeful acquisition of knowledge and skills in the field of health, regular physical training

Keywords: psychological security of the person, psychological health, healthy lifestyle, health protection, culture of health

Improvement of technological process of galvanizing in flowing electrolyte without decrease in its reliability and quality of the received deposit can be carried out by carrying out anode etching of the processed surface directly in the main electrolyte of sedimentation. And, providing such conditions of anode etching at which, the details which are formed on a surface products of reactions easily are removed a channel of electrolyte is possible. For the purpose of identification of extent of influence of technology factors on anode dissolution of the processed surface it is necessary to conduct elektrokhikmichesky researches. The installation including electric was for this purpose developed and made and gidravklichesky speak rapidly. The Elektkrichesky part contains power-supply circuits of an electrolytic cell to the asymmetric variables odnopoluperiodno straightened, dvukhkpoluperiodno straightened by current and straightened by current with the lowered pulsation, and also a chain of heating of working electrolyte. The hydraulic scheme of experimental installation includes: the kisloktostoyky electric pump, pipelines, filters, the device for an electrolytic precipitation of coverings and a bathtub with electrolyte. Electrolyte in a cell moved by means of the electric pump. Giving changed in steps, due to change of diameter of the section through passage of the giving pipeline by means of replaceable inserts. Authors of the device for electrolytic drawing coverings are Zakharov Yu.A. and Spitsyn I.A. (patent No. 2155827). The design allows: to increase the speed of a channel of electrolyte; to carry out activation of the cathode, using energy of a channel of electrolyte; to increase the accuracy of copying of the cathode the activating elements; to use higher density of current and to reduce power consumption of the device. Electrolyte, in the course of sedimentation, was constantly filtered. As filtering material used fiber glass. The filter if necessary it is possible to dismantle and wash out quickly. Such filtering element slightly interferes with a channel of electrolyte, is simple in service, is cheap and quite sufficient. Thus, the offered design of experimental installation allows to conduct necessary researches of process of sedimentation of a zinc electrodeposit for its improvement.

Keywords: case detail, restoration, repair, defect, resource way of restoration, car repair production