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 optimization of multilayered one-dimensional nonlinear structure of Raman amplifier of optical signals consisted of alternate active nonlinear metal layers and passive dielectric has been studied. The amplification of the reflected and passed field energy was calculated for different structure types. The effective replacement of passive layers by active media in the middle and in the end of structure has been demonstrated.

Keywords: raman scattering, amplifier, photonic crystal, nonlinear effect, photonic bandgap

From the point of view of development of control systems, a significant disadvantage of indirect adaptive control systems of moving objects is the fact that the limiting the properties of such system are determined by the basic adaptive regulator. In other words, to solve the problem of adaptive control it is required to find a non-adaptive regulator, which solves the problem of marine autonomous vehicles. In this case, the adaptive controller replaces many controllers that solve the control of multiple objects in a non-adaptive domain. The paper presents method of direct adaptive control for marine autonomous vehicles. Nonlinear mathematical models are considered. The method is based on position-trajectory control approach. It is proved the designed by suggested method controller is a vector nonlinear PI-regulator. The regulator ensures asymptotical stability of the closed-loop control system.

Keywords: adaptive control, marine autonomous vehicles, position, trajectory

The influence of mixing method of isoprene rubber with nanofillers on the properties of nanocompositions is investigated. It is shown that (Super deep penetration) SDP method is more effective than mixing of components in melt.

Keywords: Super deep penetration, montmorillonite, wollastonite, nanofillers.

The presence of colossal dielectric constant in the low frequency region is observed in the strontium ferrite with hexagonal structure. This result can be explained in the framework of the "grain-layer" and the polarization of Maxwell - Wagner in the ceramic medium. The effect of negative capacitance in ceramic strontium hexaferrite at a frequency of less than 2.10 Hz has been detected.

Keywords: hexaferrite strontium, ferromagnetic, insulator, semiconductor, colossal dielectric constant, negative capacitance, high-temperature annealing, X-ray structural analysis, full-profile analysis, electron microscopy.

The article describes an alternative approach to the construction of the transponder timing systems. Describes the proposed approach to the creation of a highly mobile system, the basic principles of its operation and the analysis of experimental results

Keywords: transponder timing systems, time-stamping, wireless tags, specialized communication protocols

In this article the question of the possibility of using the accelerometer to control the medical device. The analysis of existing models for this purpose. Then made ​​all the necessary tests at the research booth

Keywords: accelerometer, taping, tap-tap, LIS2DM, ADXL345, MMA8450Q, medical equipment, self-powered

This article describes new method of correction of magnetic field MPFS TWT. The method allows controlling the magnetic induction instead of the current coefficient of retarding system. This approach reduces time and increases quality of correction. The key point of the method is in controlling of magnetic field on the assembly stage. The iteration algorithm of correction was developed. It is necessary to remember the coordination of the point, which need to be corrected. After measurement the researcher will know the result of influence of correction, which he or she applies to the system. In such way all magnetic system need to be controlled. This article represents the result of this approach and shows its benefits and lacks.

Keywords: periodic magnetic focusing system, a traveling wave tube, the magnetic field, the electron beam

This scientific research is directed on measurement of level of satisfaction of students with a cultural and leisure complex of Rostov-on-Don, ability of cultural infrastructure to sustain inquiries of the population, and reveals the problematic side of the existing cultural complex. Research took place from December, 2013 to May, 2014 by a questioning method. It's received low level of satisfaction with the functioning of the cultural complex among young people. Revealed a low level of interest of the population in their cultural development. It is shown that the existing cultural infrastructure is not able to fully perform their functions of the cultural development of the population and neeeds to change.

Keywords: cultural complex, sociographic measurement, questionnaires, descriptive statistics, cultural infrastructure, cultural level of the population, leisure

In the article were considered are questions that reveal  the nature and current state of food security of the country, are presented the main criteria in the areas of consumption, production and management. The basic contradiction of food security are related to the operation and management of agricultural production.

Keywords: Food security, agriculture, conflict, management, analysis, criterion, consumption.

The analysis of electromagnetic processes of thyristor controlled voltage regulator consisting of triple-wound transformer with thyristor units is possible only by means of computer modeling. The synthesis of triple-wound transformer  by means of block diagram method is concerned here. As a platform for modeling use visual simulation package Simulink. Key assumptions in the development of nonlinear mathematical model of the transformer are generally accepted.

Keywords: three-phase transformer, thyristor voltage regulator, simulation, Simulink

On the basis of the conducted questionnaire survey of the inhabitants of the Kirov region identified determinants of consumption individuals of cultivated mushrooms. Built a factor model of the market of cultivated mushrooms Kirov region

Keywords: Market of cultivated mushrooms, discriminant analysis, factor analysis

Universal method of optimal control synthesis offers a versatile method for the synthesis of optimal controls provides a solution to the synthesis problem for the class of piecewise constant functions for Lagrangian dynamical systems, the shape of the control law depends only on the structure of the cost functional and does not depend on the structure of the existing system of generalized forces. The effectiveness of the method is confirmed by a minimum of computational costs, as well as the maximum rate of convergence and accuracy to achieve the desired trajectory in comparison with the known solution for example has become a test for testing various control methods for the synthesis problem of a simple pendulum.

Keywords: combined maximum principle, optimal control, mathematical pendulum

By self-propagating high-temperature synthesis (SHTS) prepared fine powder оf La2-xSrxNiO4 composition , which is used to obtain dense ceramics exhibiting the properties of n-type semiconductor. Prolonged annealing of the samples resulted in a decrease of the conductivity on the order of 3-4, and the changing nature of the dielectric spectrum: dielectric constant ε' has a stable value of 4·104 Hz in the range of 0,4 − 1·105 Hz .

Keywords: dielectric constant, phase separation, nikelate of strontium lanthanum, self-extending high-temperature synthesis

The article presents a mathematical model of deformation of thin-walled conical shells, considering orthotropic material, geometric nonlinearity and transverse shear. Showing geometric relationships, physical relationships, the functional of total energy of deformation and boundary conditions.

Keywords: conical shell, tapered panel, mathematical model, geometric nonlinearity, orthotropic, lateral shifts