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  • Description and application features of the high-voltage switch-mode regulator integrated circuit LM5001-Q1

    The article describes the structure, detailed description of the high-voltage switch-mode regulator integrated circuit LM5001-Q1 for the automotive electronics and the basic features of its application. This integrated circuit is designed to build effective pulse DC-DC converters with different topologies of power parts (boost, flyback, forward, SEPIC). It can be used for building of power supplies for industrial, telecommunications and automotive applications. The controller has in its structure a power MOSFET, current sense circuit, peak current limit circuit, a high-voltage bias regulator, bandwidth error amplifier. The article describes all possible modes of integrated circuit, principle of the current mode control and the slope compensation of current signal. The article explains the principles of operation of the current limit circuit and thermal protection, and specifics of the organization of external synchronization.

    Keywords: LM5001-Q1, integrated circuit, high-voltage switch-mode regulator, pulse DC-DC converter, pulse-width regulation

  • Calibration of the linear element of piezoceramic pressure transducers in the blasting chamber by a drop weight method

    The article focuses on the brief analysis of existing measuring devices of parameters of shock-wave processes include, in particular, electrical discharge in condensed medium. Conversion coefficients for calculation of amplitude of pressure of a shock-acoustic wave were found by means of mathematical modeling of the physical process happening in the piezoceramic pressure transducer when pulse mechanical loading influences on it on the assumption of absolute sharp border. The results of the calibration of the linear module of piezoceramic pressure transducers in the transmission condensed medium in the blasting chamber using a drop weight method are described.

    Keywords: pulsed electric discharge, electric explosion of conductor, calibration of piezoceramic pressure transducer, a drop weight method

  • Point of reference

    When performing installation of technological equipment in the shop one of the main instrumentation task is to control the installation of component parts of equipment on a given elevation in a horizontal position. The solution to this problem, usually implemented by geometric precision leveling. The authors of this article, the improvement of means of fastening geodetic altitude framework developed technical solution universal removable working point of reference.

    Keywords: technical control, installation of technological equipment, point of reference, geometric parameters, contour build

  • Modeling and automation of the management process of formation of professional skills of the operator of the process system

    The paper proposes a model system for managing the process of formation of professional skills of trainees during exercise using a computer simulator. A distinctive feature of the proposed system models is the opportunity for the shortest time to achieve a high degree of quality development and skills by computing the integrated assessment exercise learners based on a number of quality indicators with different physical nature (using fuzzy set theory and the analytic hierarchy process) as well as full control of the dynamics of the development of skills in view of the gradual development of skills with repeated exercises under repeatability conditions (using mathematical models of iterative learning).

    Keywords: automated training systems, computer simulator, professional skills, fuzzy sets, iterative learning model, analytic hierarchy process

  • Study of the dependence the body deformation of bus rollover on the deviation coordinates of the center of gravity

    The article proposes a method for determining the total impact energy and the deformation of the bus body in case of rollover. This method takes into account the deviation of the coordinates of the center of gravity. Developed adjusted formula for calculating the height of the fall of the center of gravity and total impact energy. Conducted experimental calculations based on which made suggestions for optimization of systems passive safety.

    Keywords: bus, passive safety, center of gravity, total impact energy, body deformation, critical load

  • Analysis of solutions of the problem of control radialnet and profile of the longitudinal section

    The problem of measuring the geometrical parameters of objects with curvilinear forms, is that for some material object it is necessary to determine the compliance of its controlled surfaces specified a priori (or a posteriori) geometric form. A common solution to this problem lies in the fact that in some coordinate system is set to reference the shape of a curved shape (circle, ellipse, parabola, hyperbola and other curves), it is necessary to determine whether the current point of the controlled object to a given curve.

    Keywords: technical control, controlled surface, geometrical parameters, the profile of the longitudinal section, a laser system

  • Damage detection of reinforced concrete column based on vibration Tests

    In the article the problem of localization of defects rassmrtirvaetsya concrete columns using methods of vibration diagnostics. Fault location technique based on the analysis of dynamic characteristics of the structure, such as natural frequencies and mode shapes. In this paper we study shows the finite element model of the column using the method of determining the index of structural damage. The results of localization with a different arrangement of the defect in the design.

    Keywords: damage detection, reinforced concrete column

  • The device for galvanomekhanichesky sedimentation of coverings on internal cylindrical surfaces of details of cars

    Sedimentation of electrodeposits with activation of a cathodic surface is in the flowing and contact way the most perspective way of restoration of internal cylindrical surfaces of details of cars. The existing devices for realization of this way have the merits and demerits, and can be therefore modernized and improved. On the basis of the analysis of the existing devices for galvanomekhanichesky sedimentation of coverings the new design is offered, novelty and which advantages is confirmed with the patent Russian Federation for the invention. The device contains the top and lower flanges in which there are branch pipes for a supply and removal of electrolyte. Between flanges the processed detail with rubber laying is established. The received tight electrolytic cell is pulled together with vertical couplers between a bed and a clamping plate. In the lower flange on a vertical axis the activating head consisting of the krylchatka bearing on herself three levers with is established by the activating elements which are movably fixed on them. Axial movement of a krylchatka is limited to the removable motionless anode. Pressing of the activating elements to the processed surface is provided at the expense of the elastic shock-absorbers located in rectangular grooves of a krylchatka and influencing the lower shoulder of levers. Tokopodvod to a detail is carried out by means of the contact device fixed on a bed, and to the anode via the contact plug from a source of a direct current. Circulation of electrolyte is provided with the acidproof hydraulic pump. The offered design is simple in production and doesn't demand existence of the expensive specialized equipment. The operating procedure with the device and sequence of operations doesn't contradict technology of sedimentation of electrodeposits. In article the main advantages of the device in relation to existing in car repair production are opened and proved.

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

  • Monitor the development of the regional industry (for example, industrial Rostov Region)

    The author evaluates the industrial sector for the six-year period, to identify innovative tools for the sustainable development of industrial enterprises in the Russian economy.

    Keywords: Monitor the development of the regional industry (for example, industrial Rostov Region)

  • Hall gradiometer

    The article deal with gradiometer is designed for remote nondestructive testing of various purposes pipelines. Gradiometer sensor consists of two Hall-effect transducers three-component magnetic field placed at a distance of 1950 mm from each other. The specialized algorithm for reducing transducer’s bias error is used. The gradiometer sensor’s orientation relative to the pipe axis is determinate by the digital microelectromechanical system. The results of measuring the gradient of the magnetic field induction, module, and the coordinates of the sensor are displayed on the LCD display and saved on non-volatile storage.

    Keywords: magnetometry, nondestructive testing, gradient of the magnetic field, the Hall sensor, magnetometer, gradiometer, magnetogram

  • The technique of automatic quality assessment exercises on a computer simulator operator of the process system using fuzzy sets

    In this paper we propose a model to automatically obtain a comprehensive assessment of the level of formation of professional skills of operators of industrial-technological system, scientific novelty which, compared with existing, is the ability to relate the quality of some exercises on a computer simulator with different physical nature (time, distance etc.) with coefficients of development, are dimensionless quantities and therefore suitable for further processing. On the basis of the proposed model in the near future plans to implement algorithms, software and information support automated training system operators of industrial and technological processes.

    Keywords: automated training systems, computer simulator, professional skills, fuzzy inference algorithm Mamdani, fuzzification, defuzzification

  • Reciprocal relations for nonlinear magnetoactive plasma-like media

    In the paper the Vlasov equation solution is considered for a case of stationary, homogeneous, isotropic and weakly nonlinear magnetoactive plasma-like media by successive approximations technique. An expression for the quasi-linear conductivity is obtained, which at low magnetic field ceases to depend on the electric field. It is shown that the quasi-linear conductivity matrix is symmetric, and its elements satisfy the classical reciprocal relations. The obtained relations can be applied in the design of magnetic microelectronics devices, for example, to improve the metrological characteristics of the digital Hall magnetometer.

    Keywords: reciprocal relations, nonlinearity, plasma-like media, kinetic coefficients, quasi-linear conductivity

  • The environmental effects on the vibrational properties of individual carbon nanotubes

    In this paper the environmental effects on the vibrational properties of individual carbon nanotubes were studied by means of Raman spectroscopy. The individual nanotubes were first synthesized by catalytic chemical vapour depositon method. Then their geometric structure was determined by electron diffraction and high-resolution electron microscopy. The intrinsic experimental relationship between RBM frequency and the tube diameter was obtained and certain deviations from the expected 228/d relationship were found. The effect of the substrate was identified as the most probable explanation for these experimental observations. In order to quantify the origins of deviations, we propose a comparison between our experimental data and calculations performed in the framework of elasticity theory.

    Keywords: individual carbon nanotubes, Raman spectroscopy, radial breathing modes, environmental effects

  • Social determinants of economic growth: income inequality

    The article is devoted to a problem of influence of an inequality in distribution to economic growth. This factor is considered in the context of approaches to research of the transmission gear of influence of an inequality on economic growth. In article results of the empirical analysis which is carried out by the author, influences of an inequality on dynamics of economic growth are, the conclusion about the importance of this factor and conditions of its influence locates. Identification of average force of correlation between Gini's coefficient and dynamics of economic growth (0,354) that is caused by impact of the whole range of various factors on economic growth along with the considered factor became result of the analysis. Thus correlation is both positive, and negative. In the range of the size of Gini coefficient approximately to 0,445 growth of an inequality in distribution at first causes increase of rates of economic growth, that is direct dependence between these indicators is observed. It is connected, in our opinion, with growth of concentration of the capitals and existence of the separate points of growth caused by unique types of resources and a great demand on them. In the range of the size of Gini coefficient from 0,445 to 0,510 rates of economic growth don't change that is connected with big impact of negative influence of an inequality, than other factors. At high level of an inequality (Gini's coefficient more than 0,510) to increase in an inequality there is a decrease in growth rates. Thus, the countries with considerable degree of an inequality in the income have smaller opportunities of economic growth, than the country with low level of differentiation.

    Keywords: income distribution, inequality, factor, conflict of interests, earned income, economic growth, gross domastic product, economic stability

  • Combination of Raman spectroscopy and electron diffraction for the structure analysis of carbon nanotubes

    In this paper a method for the atomic structure analysis of single-walled and multi-walled carbon nanotubes based on the combination of Raman spectroscopy and electron diffraction is presented. We discuss the main criteria of this method and give an example of index-assignment of individual double-walled carbon nanotube. We argue that the combination of several techniques gives the most accurate and unambigous structure identification.

    Keywords: individual carbon nanotubes, Raman spectroscopy, electron diffraction, electron microscopy

  • Psychophysiologically motivated method for estimating the amount of information in an image

    The paper proposes a method of calculating the amount of visual information in an image. The method is based on the model of local analysis in the early vision. We are talking about the information perceived by an observer under certain conditions, not about the information contained in the raster image per se. Simple striate cortex neurons respond to the simple visual features of image, for example, the bright stripes in a dark environment, and the brightness gradients. To evaluate the amount of information in the image, it is possible to take the ratio of the number of activated neurons to the total number of neurons in a model. It is necessary to consider the angular size of the image to calculate the value of the estimate.

    Keywords: Simple visual feature, raster image, information, entropy, redundancy, simple striate neuron, Gabor function, computer simulation

  • High-frequency oscillation activity of human brain during the perception of the figures with subjective contours

    The parameters of high-evoked activity of the human brain during the perception of Kanizsa figures in various cognitive tasks has been investigated. Wavelet analysis of EEG has been demonstrated that the perception of subjective contours associated with gamma responses (30-90 Hz) in different areas of the cortex to the specific spatio-temporal patterns. This pattern indicates the formation of fronto-centro-parietal neocortex system interactions, providing the perception of distributed information.

    Keywords: visual perception, Kanizsa figures, electroencephalogram, gamma oscillation

  • Process optimization of complex modernization of the housing stock

    The structure and maintenance of housing analyzed. Put more abstract and an extensive understanding of the concept of modernization as the complex development of residential real estate. Given multiobjective mathematical model of optimization of complex process of modernization with the required adequacy.

    Keywords: comprehensive modernization, reproduction, reconstruction, sanation, housing fund, optimization

  • Features integrated automatic quality assessment exercises on a computer simulator operator of industrial-technological system

    In this paper we propose a model, the hallmark of which is the ability to automatically obtain a comprehensive assessment of the level of formation of professional abilities of operators, called a complex coefficient was calculated in the development and completion of learning exercises as a weighted average based on the weights of quality indicators used in this exercise, and the coefficients of development according to indicators of quality. Detail the features of the application of the analytic hierarchy process, which is calculated using the weights needed to calculate the complex factors of development. In the short term plan to implement algorithms, software and information support automated training system in accordance with the proposed model.

    Keywords: automated training systems, computer simulator, professional skills, analytic hierarchy process, comprehensive assessment, the coefficient development skills

  • Influence of ranking factors on site positions in search engines

    The article describes the main factors ranking sites by search engines. Using and analysing of these factors by developers of the sites gives to the high positions in results of delivery of search engines. Three groups of factors are specified and examined in the article: internal ranking factors, external ranking factors and behavioral ranking factors. The giving example of search engine ranking pages of Yandex and Google for the developed site consider these factors.

    Keywords: the ranking factor, the sorting sites, the search engine optimization, the search engine, site optimization, Internet

  • Methods of overcoming the crisis at economic destabilization

    The article considers the problems of economic instability as a result of the imbalance in the development of certain industries, interrelated phases of production, generating disruption of the reproduction process. The economic crisis that has gripped currently almost all countries of the world, is not the cause of the problems that plague the world community. The crisis revealed only the great disparities in the world economy, which led to the violation of the fundamental principle of the stable functioning of the world economy as a system - the principle of deepening international division of labor.

    Keywords: economic cycle, production, exchange, distribution, consumption, economic phase, the reproductive process, imbalance, material production, social product. surplus product, the integration, crisis.

  • Model railway optical localization of railway vehicles based on negative selection algorithm in artificial immune system

    This paper proposes a new approach to railway vehicles localization based on image processing method consists in the recognition of the railway car coupler on the graphical images obtained by cameras of versatile automatic recognition system for railway cars’ numbers (versatile ARS-RCN system). A model based on the recognition of the coupling of the real-valued negative selection algorithm with variable-sized detectors was developed. Computational experiments that showed the effectiveness of developed model in comparison with the classical support vector machine on real data collected on one the versatile ARS-RCN system object were performed. The effectiveness of the proposed approach in the duplicated mode (using two cameras) and in combination with the basic method of localization of mobile units on the basis of inductive sensors passing wheels was showed.

    Keywords: artificial immune system, soft computing, localization of railway vehicles , identification of cars’ numbers

  • Model for the study of reinforced concrete slabs punching columns when heated

    A comparative analysis of the results of numerical studies of the shear strength of the two most common models fragment joint compound reinforced concrete floor slab with a column of monolithic buildings with punching and heating. Simulation of stress-strain state of concrete samples conducted in LIRA 9.6 R9 with various combinations of loads and effects in the nonlinear formulation to study the processes of their destruction. Revealed new features of the stress-strain state of reinforced concrete monolithic buildings with bezrigelnym frame with an alternative design scheme that reflects the true picture of loading plate and corresponds to the method of Eurocode 2.

    Keywords: connection node reinforced concrete slabs with a column, monolithic building with bezrigelnym frame, strength plates with cut and bursting under heat, non-linear analysis

  • The horseshoe is a symbol of Nalchik in the architecture of CBD capital city

    The authors, based on the study of historical materials, analysis of architectural solutions constructed buildings, as well as the design of local architects, associate a symbol, Nalchik - a Shoe with his name. On the basis of various examples show the use of the symbol of the city - horseshoe as an architectural element (image) buildings and structures (entry sign, in Nalchik, the architect W. H. Carter; project stables Nalchik Hippodrome, architect W. L. Aliev; the reconstruction project of the shopping center "Nalchik", architects design Studio "KabBalktelecom"; project Newsstand, in Nalchik, the architect W. L. Eliev). The authors emphasize a pretty bad use of the symbol of the city horseshoe in the reconstruction of the shopping center "Nalchik": designed space-sham construction on the corner of the building facing the intersection of two main avenues, Nalchik, etc. to them. Kuliev, etc. to them. Lenin. In the final part of the article the authors recommend local architects often prinosit national motifs (based on the rich national culture of the indigenous peoples inhabiting the Republic) in the development of their projects, and to use the symbol, Nalchik is a horseshoe, as the architectural tectonics in the projected buildings.

    Keywords: the symbol of the city, horseshoe, architecture, entry sign, architectural composition, race track, shopping centre, Newsstand, ornament.

  • Analysis subsystem group synchronization in phase and asinfaznom modes broadband radio communication system with pulse-width modulation

    Objects of research are methods of distinguishing modes of synchronization subsystem group, and the purpose of the work - study group synchronization subsystem wideband radio system with pulse-width modulation. As a result, performance is defined threshold mode decision subsystem group synchronization in accordance with the criterion of minimum average risk. In the article investigated the modes of synchronization subsystem group. Chosen to describe the probability distribution asinfaznom mode and common-mode subsystem group synchronization. The parameters of the probability distribution in the two modes of the subsystem and verify compliance naedennyh theoretical descriptions of probability distributions with the empirical probability distributions of single series with the theoretical distribution. On the basis of naedennyh distribution laws was set threshold mode decision

    Keywords: subsystem, broadband system, the probability distribution, group synchronization