The paper presents a numerical study of the effect of external electromagnetic fields of various configurations on the computer model of a neuron; Briefly describes the created software product, allowing to conduct numerical simulation of nerve cells, the mechanism of conduction of the nerve impulse. In an alternating field, the ion flux behaves as follows: at frequencies below 1 kHz, 3 maxima of the function of the average ion velocity are observed: these are 82 Hz, 340 Hz and 801 Hz. Under the influence of fields of higher frequencies from 1 kHz to 900 kHz, strong changes in velocities and currents do not occur. It is possible that in this frequency range the field does not have time to change the velocity modulus, but at a frequency of 970 kHz there is a sharp increase in the average ion velocity, which is most likely related to the effect of the myelin sheath, since no maximum is observed from the myelin sheath.

Keywords: Neuron, axon, biological effect, modeling, microwave radiation, axon potential

The article presents the results of research of hydrodynamics of flow of the gas-suspension of conversion lime carbonate in a tube-dryer. For the first time equations for determining the speed and concentration of lime carbonate along the length of the tube-dryer at different air velocities and feed concentrations are received. The research results can be used to design pipes-dryers for large-tonnage productions of conversion of calcium carbonate. Experiments of research of hydrodynamics of the gas-suspension of conversion lime carbonate were carried out on the tube-dryer with an internal diameter to 0.069 m, length 4.8 m. Along the axis of the pipe on the rod vertically mounted discs, the first disc below the auger to 0.6 m, the second – above the auger to 0.7 m and further 1 m, total 5 disks.

Keywords: conversion lime carbonate, drying, tube-dryer

Using a semiconductor sensor for the concentration of alcohol vapors based on a microcontroller, the authors developed a device for monitoring the content of alcohol vapors with an indication of the readings on the LCD display. An algorithm for the work of the alcohol content control device developed by the authors is proposed. To take samples of exhaled air, a mouthpiece made by the authors was used. The results of full-scale tests of the developed instrument are given

Keywords: Alcohol intoxication, breathalyzer, traffic safety, device, alcohol, statistics of road accidents

The article presents the results of researches of heat and mass transfer in the flow of the gas-suspension of conversion lime carbonate in a tube-dryer. For the first time equations for determining the influence of initial air temperature at moisture content in a tube-dryer, the influence of air temperature on heat rate are received. The research results can be used to design pipes-dryers for large-tonnage productions of conversion of calcium carbonate. Experiments of researches of heat and mass transfer in the flow of the gas-suspension of conversion lime carbonate were carried out on the tube-dryer with an internal diameter to 0.069 m, length 4.8 m. Along the axis of the pipe on the rod vertically mounted discs, the first disc below the auger to 0.6 m, the second – above the auger to 0.7 m and further 1 m, total 5 disks.

Keywords: conversion lime carbonate, drying, tube-dryer

The article describes a number of techniques whose use in the educational process contributes to the quality of teaching masters. The role of information technology to solve this problem. The analysis of the various technologies and techniques that can be used in learning masters to improve its quality. The influence of various factors on the quality of education. Line graphs are constructed, illustrating the difficulties arising at the masters, when studying any discipline, including, due to varying levels of preparation for admission, as well as an assessment of the quality of their training after using the proposed measures in the article. It is concluded that meaningful use of information technology in learning masters gives positive result.

Keywords: information technology, quality of teaching, interdisciplinary communication, knowledge, research, control chart

Drying module is a part of any modern gas analysing device. Using the Peltier elements for cooling the gas probe in druying module is a known technical solution. Peltier elements are very energy-intensive things. So the task of calculation of amount of electrical energy which is needed for predetermined temperature decline of gas probe is very topical. The solution of this task is given in the article. With formulas for partial pressure of vapour we can calculate the humidity of gas at the output of drying module. Then we can find the temperature of gas. Finally using the heat balance equation and nomogramms we can calculate the voltage for Peltier element.

Keywords: Peltier element, gas probe, drying process, gas analyzer, heat balance, partial pressure of vapour

The influence of the laser material on the structure of the photocell based on thin films of zinc oxide and amorphous silicon on glass. It was modeled recrystallization processes in the solid state, considered the interaction of the surface of silicon by pulsed laser radiation, calculations are made for the surface temperature at the recrystallization of the amorphous film on Nd:YAG laser installation with length wave 532 nm. The proposed thermal model of the solution of the problem showed that the structure melt is already at the earliest stage of processing and the temperature distribution in the amorphous layer will depend on the structure of the ZnO film, as evidenced by modeling in ANSYS. According to the results of experimental studies performed, it can be said that the thermal conditions at the plant are poorly worked out, as evidenced by the roughness of the film of the amorphous layer. The mechanism of crystallization of the melt also requires refinement. The obtained results showed the prospects of the direction of silicon-on glass and ZnO

Keywords: solar cells , laser recrystallization , an amorphous layer , ZnO film , thermal model , modeling of thermal modes , tube scan

The article briefly describes the technical solution for the use of specialized fiber-optic cable embedded in ground wire (OPGW) on the sections of electric Railways AC. The technical solution is to combine in a single conductor functions return conductor and fiber optic communication lines. Are given the relevance of such decisions and some peculiarities of its implementation. The main part of the article examines to the selection options return conductor with combined functions. The article describes the theoretical dependencies for the combined selection of the conductor based on the thermal resistance criterion. As one of the main passport parameters of the OPGW cables is the section of the metal component, the percentage of their content and the variation percentages are used in calculations to determine the electrical resistance of the cable and the magnitude of the permissible current. This approach allows to determine the parameters of the cable based on the criterion of reliability and allows to obtain the cable composition for a subsequent order from the manufacturer. The algorithm of selection combined return conductor that contains two stages: pre-selection based on the reference data, the choice of the real parameters from the manufacturer.

Keywords: OPGW, reverse wire, combined reverse wire, electrothermal degradation, fiber-optic transmission lines railway transport, traction network, the choice of combined shield wire

A strategic map for the IT company was developed. The problem of modeling a balanced system of indicators for an IT company based on colored Petri nets is considered. To organize the analysis of the structure of the system of balanced indicators, the goals and indicators are presented in the form of a colored Petri net consisting of a set of classical Petri nets. To organize a vertical and horizontal analysis of the structure of a balanced scorecard, the goals and indicators are presented in the form of a colored Petri net consisting of a set of classical Petri nets. The model proposed by the authors of the BSC on the basis of a colored Petri net, reflecting the "horizontal" and "vertical" structure of the BSC, allows modeling the dynamics of achievement of goals and changes in the indicators of the BSC based on cognitive analysis.

Keywords: BSC, IT-company, balanced scorecard, colored Petri net, model, strategic map, horizontal structure, vertical structure

Contact network work in winter conditions is much more difficult than usual. The most hard contact network mode of operation is the mode of ice with wind, which increase wind and ice load on wires and cables, reference and supporting structures. Ice loading on the wires and wind effects significantly impair the conditions of current pick-off and coupled with operational factors can cause an accident and lead to a trains stop. From this perspective the detection of glaze-ice and rime deposition in the early stages with its minimal thickness becomes of vital importance. The article examines the methods of early detection of icing which are used on the transmission lines and the ability of these methods to be used in the contact network. The terms of the contact network and power lines are different that’s why not all methods used on the transmission lines can be used. The thermodynamic method of determining the ice is observed as the main. The set of equipment that implements this method and the installation option on the contact network part have been represented.

Keywords: overhead construction, contact wire, span wire, icing, workload, detection system, control methods, glaze-ice and rime deposition, power dispatcher, the thickness of the deposits, wire breakage, information

In this study, the task of optimizing the supercomputer CPU cooling system with a heat pump in the reverse Stirling cycle through numerical modeling of heat transfer processes in the test object The article presents numerical modeling of heat transfer processes in the cooling system of the supercomputer processors with a heat pump on the return cycle. We investigated the numerical model of heat transfer process in the system of CPU "cold" cylinder and heat pump system "hot cylinder" - coolant. As a result, obtained according to the thermal resistance of the system of CPU "cold" cylinder and heat pump system "hot cylinder" - coolant depending on the coefficient of heat transfer and on the value of COP of the heat pump

Keywords: processor, heat flow, the thermal resistance of the Laplace equation, heat pump, heat exchange, reverse Stirling cycle cooling system

In the article possibilities and elements for PHIL simulation of multifunctional modular systems (MFMS) are considered. For this purpose, mathematical studies of such systems were carried out, the tasks of their basic elements were singled out, and the main task was to create a universal modular model. The structure of the energy MFMS and its problems from the position of graph theory are determined. The analysis of the existing methods of PHIL simulation is presented, as well as the structure of the simulated fragment of the system at the junction of the two modules is defined with using the "coupling" method of the scheme. As a result, conclusions were drawn about the possibility of applying a PHIL simulation to the MFMS.

Keywords: PHIL simulation, modular systems, macro task, power hardware-in-the-loop simulation, analog-digital system, numerical part, analog part, Gauss-Seidel method, Jacobi method

The article presents the results of the sociological survey analysis of the technical institute students. A systematic analysis of the socialization peculiarities, connected with the problem of spiritual security in modern society, is carried out. The issues of spiritual security are relevant, since it is the spiritual attitudes that govern the practical activities of each person in individual self-realization.

Keywords: system approach, spiritual security, spiritual and moral development, system analysis, professional socialization, personal development, strategy of behavior, social feeling, educational space

Is considered a two-dimensional finite element analysis of unsteady thermal regime is made of heterogeneous layers of composite construction. The degree of influence of individual geometric design changes on the character of distribution of temperature on its volume. Heat is produced from internal volumetric sources of heat, removal of heat from the outer surface by convection. The calculation of the temperature field using two-dimensional heat conduction equation (Fourier equation)

Keywords: numerical calculation, finite element, heat conduction, convection, Fourier equation, temperature field, layer, plate, heterogeneity, design

In modern society, the factors adversely affecting the health of students, added another: the use of non-normalized electronic devices (cell phone, computer, tablet) in the educational and leisure sectors. The study confirmed the hypothesis that the students, who often use electronic devices (cell phone, computer, tablet) are disorders of the visual system. Our results emphasize the need for preventive measures among students: teaching students the skills of visual gymnastics, promotional and preventive activities that contribute to the education of students of the valuable relation to their health and maintain their visual health.

Keywords: electronic devices, the visual system, the security of the visual system, computer vision syndrome, visual health, visual gymnastics