"The mechanical properties of the rubber-cord composite in strengh analysis are described. There is an algorithm of the numerical estimation of the effective (average) properties of the rubber-cord. The effective properties are defined by the successive application of different deformations to the representative volume of the rubber-cord composite (tensions along each coordinate axis and shifts in each cooridinate planes). The effective properties are defined in form of the generalized Hooke's law (for anisotropic materials). A serias of computations in estimatition of the effective properties of double-layer rubber-cord composite was carried out based on the proposed algorithm. The dependence of the effective elastic modules of rubber-cord on the angle of cord was explored. The according graphs are represented in the article."

Keywords: theory of elasticity, effective properties, strength analysis, rubber-cord, numerical modeling, finite element method, CAE FIDESYS

The article represents the description of the construction of increment borer, its present modifications and additional devices. On the basis of the conducted survey the authors of the article defined the ways for improvement of the borer. Suggested technical solutions are at the stage of patenting  

Keywords: Increment borer, preparatory works of forest logging, tree age, forest inventory, core.

The possibility of combination of wood barking and branches cutting within through technologies of timber industries is shown. Comparison of several such processes is made with the use of functional-technological analysis and hypothesis of expediency of creation of the process technology and equipment for simultaneous group wood barking and branches cutting is formulated.  

Keywords: barking, branches cutting, through technologies, woodworking, timber industry

Alzheimer's disease is an incurable illness. It affects about half a million people in Russia, and due to the general trend towards aging of the population the number of Alzheimer's disease cases will steadily increase. Insoluble deposits of amyloid beta in the brain tissue (amyloid plaques) are the major morphological characteristic of Alzheimer's disease. It has been found that the increased concentration of copper in amyloid plaques results in copper ions bound to the protein. It is the presence of copper in the binding site triggers of the formation of amyloid plaques. Therefore, the study of the binding site in amyloid beta is of great scientific interest. The local atomic structure of the Cu(I) copper ion binding site in the amyloid beta peptide has been studied by means of XANES spectroscopy. Several model structures obtained by molecular mechanics and density functional theory (ADF code) have been tested. Theoretical analysis of X-ray absorption spectra based on the finite difference method implemented in FDMNES code was performed. An appropriate model structure of the Cu(I) copper ion binding site in amyloid beta peptide has been found.

Keywords: amyloid beta, binding site, Alzheimer's disease, the method of finite differences, Cu(I)

We study the problems in the propagation of acoustic waves of a sound range near the boundaries of media. The features of the wave processes occurring at the water-air interface, due to the influence of inhomogeneous waves. Considered in detail the properties and parameters of an inhomogeneous plane wave. The mathematical calculations of the transmission coefficients L.M. Brekhovskikh for spherical and cylindrical waves through this boundary, allowing to take into account the contribution of inhomogeneous components. It is shown that than the frequency of radiation of a source is lower and the closer it is located to water-air interface, the acoustic transparency of this border is higher. Study of the dependence of the transmission coefficient of the water-air interface at low frequencies can have important consequences in a number of fundamental and applied problems. Increase the transparency of the interface requires a reassessment of the feasibility of acoustic communication from water in the air, the detection of underwater sources without dipping into the water and acoustic monitoring of the physical processes occurring in the water.

Keywords: Inhomogeneous plane wave, water-air interface, transmission coefficient, wavelength, spherical wave, acoustic impedance.

Recently, in the process of creating a single information space worsened organization relevant databases in geographically separated units of one company, no common local area network and to allow for working with databases via the Internet. The main solution is to organize the synchronization of electronic data on external media.
The developed application allows an automated procedure to find differences in the databases of reference materials and assortments, add to the database of any of the divisions of the elements that are missing from it, and are available in the other areas.
The present article is intended for those engaged in the organization of a common information space in the field of design and technological preparation of production through the creation and administration of topical databases.  

Keywords: database, reference of materials and assortments, algorithm, synchronization, program, enterprise

The authors of the article examine the problem of electrothermal degradation of fiber optical communication lines arranged on the high-voltage power lines pylons. The possible methods of reduction of high-voltage line electric field influence on fiber optical communication lines were studied. There is also the method of possible calculation and choice of optimal suspension place for fiber optical cable on a high-voltage line pylon. This method can be applied for one of the high-voltage line masses disposition cases.

Keywords: electromagnetic field, thermal-electric degradation, fiber-optical communication lines, high-voltage power lines

In our hard time the main methods of decision-making are axiomatic, heuristic and verbal. Heuristic approach corresponds to the repeating difficult situations which aren't giving in to the direct mathematical analysis. The selection process is modeled as solutions to reproduce the course of human reasoning.
The emergency situation on separate object is comparable to crisis in economy of the whole state. On the detailed analysis and checks simply there is no time. The most perspective directions here – application of heuristic models and the quantum theory on the basis of system approach to the solution of arising problems. Conscious intervention of managers in development of system is carried out by control of signs of the organization of processes. To reduce novelty and complexity of a problem, it is necessary to receive additional information. Based on this information, the experience and intuition, the head gives to results estimated probability. When costs of collecting additional information are great, it is possible to assume probability of events on the basis of last experience and judgments.
Achievement of the planned purpose with orientation to the future can be provided at concentration of the main influence on the future analysis (including on the analysis of hypothetical crisis situations), instead of the past.  

Keywords: сrisis, methods, axiomatic, verbal, heuristic, uncertainty, information, risk, system, chaos

This paper describes an in-situ experimental technique to study of ceria nanocatalysts by using X-ray absorption near edge spectroscopy XANES. This technique allows us to determine Ce3+ concentration inside ceria nanoparticles in the course of catalytic reaction based on the comparison and divergence minimization of the Ce L3 XANES spectrum of the ceria nanoparticles under catalysts (atmosphere, temperature) with a linear combination of two independent components corresponding to spectra of Ce4+ ion of the CeO2 structure and Ce3+ ion of the theoretical Ce2O3 structure. The calculated weight ratio determines the Ce3 + concentration in the sample during the catalytic reactions.

Keywords: in-situ X-ray absorption spectroscopy, HERFD, XAS, ceria nanoparticles, Ce-based catalysts, Ce3+ concentration

The problem of manufacturing technology heterostructures pezofaza - metal considered in the article. Complexity consists in the fact that during the removal of the polymer in the system at low temperatures are formed porous layers, formed powders separated metal layers, having island macrostructure. One way to solve the problem - reducing the firing temperature heterostructures. Proposed to decrease the sintering temperature by using of functionally active glass-phases. Reducing the sintering temperature of products also allows to replace platinum electrodes inexpensive silver-based alloys. Obtained by solid state reaction method of piezoceramic material has a low sintering temperature (980 ° C) and high electrical parameters. Found that not only the proportion of the vitreous mass, but also their qualitative influence on the properties of piezomaterials    

Keywords: heterostructure glass phase, the sintering temperature, porosity, ferroelectric phase

Piezoelectric ceramics on the basis of the phase of (1-x) PbTiO3-xPbZrO3 is the basis of most high-performance piezoelectric materials. Electrophysical and mechanical properties of these materials can vary widely in different ways. Traditional methods include changes in composition within the morphotropic region and doping. Now is the study of the influence of topical makrolegirovaniya the material properties of the PZT system. As a model system was selected phase of the PZT system, the compositions of which MO belong, one of which contains a dopant in the sublattice (A) and another - in the sublattice dopants (B). The studies established that one of the effective ways of varying the parameters piezomaterials may be the formation of solid solutions on the basis of two or more piezoelectric phases having different combinations of electrical parameters  

Keywords: Piezoelectric ceramics, doping, kombinorovanie, pezofaza, piezo

In this paper, the synthesis of a trajectory regulator for a mini-helicopter are described. We propose a method to hardware-in-the-loop simulation using simulator AerosimRC. The simulation results are showed. The tasks for the application of the method are pointed.

Keywords: position-trajectory regulator, helicopter, mathematical modeling, simulation, algorithms.

Describes the characteristics of the formation of zones zaschischayuschihlinii power, railways, roads, communication lines and other linear structures, passing through forests of trees and shrubs.

Keywords: Key words and phrases: trees and shrubs, protection, linear construction.

The technique of the geometrical analysis and the analysis of force loading of combined drills with the replaceable multiface plates is offered in this work. This technique is allowing to determine geometrical parameters and specific force loadings in each point of a plate’s cutting edge taking into account its orientation in the drill case. Application of this technique allowed to establish the reasons of the drill’s low durability. The offered technique allows to design drills from the minimum unbalanced radial component of cutting force which increases its working capacity and the processed holes quality. New designs of combined drills both with two, and with three replaceable multiface plates are offered in this work. The durability of this new drills is increased by the plates mutual turn for the minimization of an unbalanced radial component of cutting force  

Keywords: combined drill, replaceable multiface plate, drilling, design, equilibration, geometrical analysis, the analysis of power loading

Disassembling of NPP equipment, systems and metal constructions is a compulsory procedure in the final stage of NPPs work cycle, namely withdrawal. Disassembling technology is closely linked with some necessary conditions, that is why some mandatory requirements must be fulfilled.
The disassembling tasks can be carried out with the help of modern tech-nologies, means and instrumentware. The system of task-oriented engineering and adaptation to the environment and its conditions provides informational and me-thodical supporting in the process of developing the technology of equipment dis-assembling.   
This article presents the common methods and practical recommendations for developing the technological process of disassembling of NPP equipment.  

Keywords: NPP (nuclear power plant) unit, equipment disassembling, fragmentation, safety, permissible doses, remote control, engineering system, model, boundary condition, matrix

A differential game theoretic model of the social partnership relations in the system of higher professional education is proposed. The state vector describes a level of students' professional level. Some approaches to the model identification and investigation based on simulation modeling and differential cooperative game theory are considered.

Keywords: social partnership, higher professional education, differential cooperative games, simulation modeling, identification

Finding of small concentrations of various gases as an important task for the environment and for the industry. In this paper, investigated gas-sensitive properties of the films of graphene on silicon carbide to NO2 and vapour C2H5OH. The principle of operation of graphene sensor based on the change of electrical conductivity by reason of adsorption of gas molecules. Temperature dependence of the gas desorption from the surface of graphene is obtained. Mode of getting graphene films with the best gas sensing characteristics is defined. The obtained  results suggest that graphene is a promising material for gas-sensitive sensors  

Keywords: graphene, graphene films on silicon carbide, gas sensor, gas-sensitive of graphene

In article gasdynamic approach for the solution of a task on heat distribution in simple gas pipelines on the basis of consideration of a current of gas in a laminar mode is considered. The objective is solved by means of research of system of the equations of work of extending gas taking into account an assessment of difference of temperatures at explosive decomposition of a working product. Classical approaches to research of distribution of heat in a simple cylindrical pipe are thus taken as a basis the main dependences characterizing both full, and the current work of a working product by means of correction coefficients and a ratio of temperatures of heating of walls Are presented. Connection between pressure is established at different weight ratios of gas. The specified approach can be used as a technique of model research of gasdynamic processes taking into account a thermolysis in gas pipelines.  

Keywords: thermolysis, gas pipeline, gas work, temperature, pressure

A hybrid reverberation algorithm is offered in this article. This algorithm is using both a convolution section in which a convolution with an inmpulse response of a real acoustic room is being implied and a mathematical reverb model. Also an algorithm for generating impulse responses of optional rooms is also offered in the following article. The algorithm efficiency calculation is  specified in the article. Thia reverberation algorithm is a part of a bigger complez auralization algorithm where it is being used coherently with an HRTF-based algorithm in order to simulate a real acoustic environment  

Keywords: artificial reverb, room simulation, convolution algorithm, impulse response convolution, impulse response synthesis, dynamic convolution, complex filtering

It is noted that the services sector in the Rostov region isn't always accompanied by due quality and availability. Major factors which will affect dynamics of development of a services sector are defined. Dynamics of volume of paid services in subjects of the Southern federal district is analysed. The conclusion is drawn that the greatest possible ensuring requirements of the population of the region of the Rostov region in services of high level demands the unconditional solution of actual tasks which are also presented in work.  

Keywords: services sector, tendency, development, quality, dynamics.

The case of forestry machinery shown promising applications of the theory of industrial organization theory and organizational change management to address the problems of inscribing machine-building enterprises in the market economy  

Keywords: engineering, organizational change, market transformation.

Considered part of the software and hardware designed and manufactured the device for the automatic analysis of nonlinear parameters of high-temperature superconducting ceramics YBa2Cu3O7-x in variable magnetic fields. Shows the calibration and specifications. The new is a synchronous (the error in determining the phase of no more than 0.5%) of digital signal samples of the nonlinear response of the sample and the samples generated by an external magnetic field (the error is less than 1%), with the number of data samples per channel to 90 ∙ 106 12-bit samples and sampling 600 ∙ 103 samples per second. The reference range of variable magnetic fields 1 - 50 Oe, a frequency range of 1 - 50 kHz in steps of 1 Hz and the accuracy of 0.0291 Hz. The device has an interface to the computer via two USB-interface and original software to work with it. With the use of the device, a series of experiments designed to produce some non-linear parameters of cylindrical sample made of high-Tc ceramic YBa2Cu3O7-x. The analysis of the results and their comparison with the presented in the literature  

Keywords: Nonlinear medium, high-temperature superconducting ceramics, synchronous samples, harmonics, ARM-9 CPU, a differential sensor.

In a modified version of the adaptive clutch size of the spacer strength decreases due to a reduction of torque, which transmits the additional friction group, including, for the maximum value of the friction coefficient. Therefore, to save the value of the brace force is necessary to increase the ratio usileniya.Predlozhena concept modernized version adaptvnoy clutch with a combined feedback based on the formalization of the distribution of power factors for the closure of the main steam friction of the friction and more friction groups, allows you to simplify the design of the coupling compared to the base case  

Keywords: the coefficient gain, a separate positive connection, the coefficient of friction, clutch, friction pair

The influence of manganese nitrate impregnating solutions concentration and temperature dynamic viscosity, the wetting angle, interface “porous tantalum electrode - solution” free surface energy and the impregnation degree of porous tantalum anode was researched. A quantitative characteristic of manganese nitrate solution application on porous tantalum anode of solid-electrolyte capacitor during the process of impregnation was defined and work of adhesion and cohesion was calculated. Thus increasing of solution concentration above 42% wt brings to sharp growth of surface tension and so work of cohesion is increased but carriers impregnation is fallen. The most effective impregnation is realized at concentration 27% wt. This fact corresponds to best value of tantalum anode capacitor free surface energy. So using received data we are able to estimate optimal conditions of impregnation and wetting process by nitrate magnesium.  

Keywords: manganese nitrate, manganese dioxide, limiting wetting angle, free surface energy

The question of an assessment of emission of greenhouse gases from a water complex of housing and communal services is considered. The bundled software, allowing to calculate emission of dioxide of carbon from sewage treatment processes taking into account specific conditions of their course is created. Having defined specific emissions from concrete constructions and stages of transportation and sewage treatment it is possible to supervise and regulate processes of transportation and processing of sewage  

Keywords: emission of greenhouse gases, emission of dioxide of carbon, processing of sewage, bundled software, specific emissions