The article discusses the Pan-Tompkins algorithm to detect QRS complexes in real time, when applied to a PC for analysis of records not in real time and pre-recorded. QRS complexes detection algorithm was published Dzhiapu Pan and J. Willis. Tompkinson in the journal IEEE Transactions on biomedical engineering, vol. BME-32, NO. 3 in March 1985. The algorithm has been designed for use in real time. Pan and Tompkinson developed an algorithm for real-time detection of QRS complexes of ECG signals. Algorithm for QRS complexes reliably recognize, by analyzing the inclination of the complex amplitude and width. Special digital bandpass filter reduces the number of false detections caused by different kinds of interference present in the ECG signal. This filtering allows the use of low detection thresholds, thereby increasing the sensitivity of detection. The algorithm automatically adjusts thresholds and parameters periodically to adapt to such changes ECG QRS morphology and as the heart rate. For standard recording duration 24 hours from the database MIT / BIH arrhythmia database, this algorithm correctly recognized 99.3 percent QRS complexes. However, this time the algorithm is rather outdated, as it was designed for computers that time. With certain modifications and current capabilities, parameters can improve the quality and speed of analysis. A modified version of the algorithm has been developed for use in the client software mobile multifunctional hardware-software complex and long-term cardiac monitoring ergonometrii. Better and more precise analysis of QRS complexes in the signal more accurately assess the state of the cardiovascular system of the person, which is an important factor in the treatment and diagnosis of heart disease in the early stages.

Keywords: ECG, accurate analysis, detection of QRS, algorithm Pan-Tompkinson, cardiovascular system.

Research of possibility of management of morphological parameters of arrays nanoparticles Au (form, the size, density of superficial distribution) of the thin films of ZnO received on a surface by method of the pulse laser deposition (PLD) with subsequent annealing in the inert atmosphere was conducted. It was experimentally established that increase of the average size of Au nanoparticles leads to the plasmon peak broadening and its shifting to the red region. Nanoparticles with diameters 17, 25, 31, 37 and 40 nm have plasmon absorption maximums at wavelengths 570, 590, 605, 610 and 620 nm, respectively. With the increase of the average nanoparticle size nm to a certain value rise of maximum in absorbtion spectra at wavelengths 570, 590, 605 and 610 followed by its decrease at 620 nm is observed. The highest value of the intensity at/in the absorption maximum corresponds to the average diameter of the nanoparticles of 37 nm. Optimal conditions for synthesis of isolated arrays of Au nanoparticles on the surface of ZnO thin films with high maximum of plasmon absorption were experimentally found. Obtained results can be used to increase the sensitivity of the photodetectors and solar cells based on zinc oxide or chemosensors based on Raman amplification effect near the gold nanoparticles.

Keywords: nanoparticles of Au, arrays of isolated nanoparticles, plasmon resonance, a photodetector, photosensitivity, ZnO film

Recently becoming urgent problem of managing distributed processes of production, transmission and consumption of energy. This fact is associated with the emergence of a significant number of generators and the possibility of a primary control on all elements of the grid. In this connection, in proposed three-level distributed power grid management, which includes the upper level of segmentation networks, distributed control average frequency and power level and a lower primary control. The methods of control for each of the above levels, the results of simulation.

Keywords: smart grid management system, distributed control, frequency control and power.

This paper, based on the content of the axioms for the randomized algorithm, considers the collection of using correct algorithms at synthesis for solving the problem of probabilistic hidden Markov model. Application of this model allows forming algorithm with its flexibility according to a substantial situation for ensuring structural and functional stability of the program realizing this algorithm. We found that randomization of the algorithm, increasing its flexibility and efficiency, does not improve its risk compared with the corresponding deterministic algorithm. The synthesis of the algorithm based on hidden Markov model implies that the available observed data is used to determine hidden parameters of the most likely sequence of states, determining the synthesized algorithm. At the first strategy step, the "back and forth" algorithm is used to evaluate how well the model matches with the input data of the synthesized algorithm. At the second stage, the given hidden Markov model with the space of hidden states, initial probabilities of presence in state i and probabilities of transition from state i to state j, and basing on the observed states and using the Viterbi algorithm, the Viterbi path is found. At the third strategy stage, the hidden Markov models are corrected by optimizing the parameters of the model using the Baum-Welch algorithm.

Keywords: hidden markov model, "back and forth" algorithm, viterbi algorithm, Baum-Welch algorithm

The article presents a mathematical model of state support for producers of fresh cultivated mushrooms

Keywords: The production of fresh cultivated mushrooms, state support and regulation of production, economic-mathematical model

The paper considers method of estimating reliability indices of activity excavator operator with functional circuits. Been calculated the probabilities of error-free performance of three groups of workers (high-sufficient and satisfactory).

Keywords: operator, man-machine system, the method of functional systems, excavator, functionaries kompozitsionery, functional diagrams

The article provides an overview of different technologies for applying images onto a flat surface of the workpiece mechanical dot-impact photo printer on the basis of practical experience, reasons for marriage and remedies, types of material.point-impact photo printer and suggest methods to eliminate it.

Keywords: workflow, photo printer, a dot-impact engraving, image distortion parameters blanks

Results of poll of students of the Don state university about a cultural complex of the Rostov region are given in article. The main cultural and leisure installations of respondents, their relation to cultural infrastructure of Rostov-on-Don and area, their main cultural interests are shown. On the basis of these data conclusions are drawn on the level of satisfaction of cultural requirements of students.

Keywords: cultural complex of the Rostov region, cultural requirements, sociocultural elements, cultural services

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