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

Based on stm32discovery kit was designed device for vibro-acoustic control. For receive of vibro-acoustic signal used piezoelectric accelerometer, which connected to ADC of microcontroller stm32f4vgt6. For Processing data use personal computer with software, which was developed in visual programming language LabVIEW Data from microcontroller to personal computer transmitter with use USB to UART. Culling depend from results of comparison, reference spectrum and current spectrum by values of the correlation coefficient

Keywords: STM32F4 Discovery, ADC, VISA Serial, LabVIEW, adapter USB to UART, vibro-acoustic control, spectrum, reference, signal processing, correlation coefficient

In the article scheme of the process optimization of certification authorities services provision which ensures security services of transmitted information is described

Keywords: digital signature, certification authority, optimization, electronic government, centers of state and municipal services provision, information security services

Physical education at the present stage of world development of society takes the form of a social phenomenon, is to strengthen the role of sport in the lives of everyone. Variety of sports meets a wide range of specially adapted facilities. The problem of technical modernization, stadium reconstruction and development as a multi-functional sports facilities (IVS). Profitability maintained and advanced facilities can be improved by putting into practice the principles of design of architectural form and structural theoretical model of the spatial organization of the IVS.

Keywords: reconstruction of the stadium, technical modernization, multi-purpose sports facility, the principles of formation of architectural, structural theoretical model

The paper discusses the importance of reconstruction of the existing buildings and structures as energy efficient premises. It highlights that, despite the tendency to demolish residential facilities built in the second half of the twentieth century, in many cities (not only in Russia) these premises are still in demand on the real property market. Because one of the principles of making energy efficient buildings through their reconstruction is to increase the thickness of enclosing structures the paper suggests using composite foam (PENOCOM®) as a certified composite thermal insulation material. The paper sets out the main characteristics of composite foam and provides a summary description of the technology to increase wall thickness with the use of composite foam.

Keywords: energy efficient building, reconstruction, enclosing structures, thermal insulation material, composite foam, technology to increase wall thickness

One of the problems with exploitation of log trucks is damage to equipment during the process of transportation of wood material and during loading-unloading operations. The authors of the paper suggest equipping a log truck with an innovative protective butting device in order to increase reliability and work efficiency of the hydraulic manipulator. This device will allow aligning the sawn wood ends of wood products, and thus it will allow excluding a chance of protruding of sawn wood ends at an inadmissible scale which prevents forming a neighboring pack of wood products. The device will also allow excluding mechanical damages of a hydraulic manipulator by sawn wood ends of wood products being laid on a load platform. This will increase its reliability and will reduce the expenses on repair works.

Keywords: log truck, hydraulic manipulator, modernization, reliability, safety

In this paper discussed the main problems when choosing the optimal reservation of information systems. The algorithm of optimization of redundant information systems. Defines the basic concepts of developing mathematical models of redundant information systems. Given and illustrated by an example of calculation of the main reliability characteristics of a redundant information system.

Keywords: mathematical model, simulation, redundancy, information system

Obtained in the course of work the results show that the heat loss through fasteners ventilated facade is 40.5% of the total heat loss through the outer face of the facade. Using the data obtained for the evaluation of the heat losses of a 7 - storey residential building in the city of Nalchik, with a total area of external walling 2.470 sq. m. found that at a temperature difference of 39°C for 1 hour in the wall is the thermal energy in the amount of 57 kW«h, including 23.1 kW«h refer to the heat loss via the fastening elements of the facade panels, for 24 hours through heat-conducting inclusions is lost 554.4 kW«h For 7 months of the heating period with an average temperature of 28°C the heat loss will be 83745.7 kW«h Taking the cost of 1 kW«h of electricity 3.47 RUB and assess the rate of heat loss through the frame of a ventilated facade in cash for the entire heating period, will receive additional heat loss through the frame of a ventilated facade cost 290597 RUB.

Keywords: temperature field, heat-conducting inclusions, ventilated facade, heat, heat flux, fasteners

The results of an analytical study of diffraction of surface waves in anisotropic gradient open planar structures were presented in this work. The solutions of the wave equation and the possible values ​​of the constants of propagation for waves in the complex plane transverse wave numbers were found. We obtained a graphical expression of the reflection coefficient of the first guided magnetic modes from the given size of the cross-structure for different values ​​of the gradient parameters in the transverse profiles of the elements of the dielectric tensor of waveguide layer. We finally showed the possibility of practical applications of all results.

Keywords: compositional structure, waves of the discrete spectrum, the gradient tensor of the dielectric suseptibulity, the reflection coefficient of the first magnetic modes

This article considers the influence of a structuring additive on the physical and mechanical properties of aerated concrete. As a structuring additive, a by-product was introduced into the composition of the aerated concrete mixture by cutting the top layer of the "gorbuschka" in an amount of 10 to 30%. Comparative analysis of the results of physical and mechanical tests of aerated concrete samples with different amount of structuring additive showed that its introduction increases the compressive strength, while simultaneously increasing the density of aerated concrete. At the same time, the value of the constructive quality factor in GB4 (with 20% of the "gorbuschka") is 20.4% higher than in GB2 (with 30% of the "gorbuschka") and 31% higher than for the aerated concrete base composition GB1 (control) that allowed us to take him for the optimal composition in further research.

Keywords: "gorbuschka", structuring of aerated concrete, non-autoclaved aerated concrete, structuring additive, swelling process, plastic strength of the structure, constructive quality coefficient, average density in the dry state, compressive strength

Article contains the control system of distance learning with use of educational resources where the purpose of management set upgrading of tutoring by means of modification of content and the interface of an educational resource, for increase in number of the fissile users is described. Authors offered the motivation mechanism of users to sessions continuation of tutoring by means of behavioural interactive notices on the basis of data from a condition assessment subsystem of the trainee. Effectiveness of the offered mechanism is proved by urgent statistical data.

Keywords: Educational resources, mobile applications developing resources, the active user, interactive notification messages, management system educational process, the user interface, content, the mechanism of motivation of users.

The article discusses the criteria of a modern condition of urban centres and the need for reconstruction of buildings and structures. Recommendations for improvement of existing organizational forms of management of urban development from the position of the centering urban infrastructure. Indicated the need for a uniform management of the whole investment and construction complex from the beginning to the end of the operation of the facility

Keywords: organization of construction; renovation and restoration, the formation of the city center

This paper presents use metasystem approach to creation of complex system model. An opportunity to synthesize quantitative and qualitative models of separate subsystems in the form of a metamodel of complex system is distinctive feature of metasystem approach. Such approach gives the chance to develop and correct both the purposes of functioning of system, and a way of their achievement. The model of a geographic information system (GIS) acts as a metamodel basis. The GIS model integrates, processes and traces existential and coordinate information. The model of a geographic information system is in turn described as set of model of measurement of a condition of system and model of measurement of state of environment, including sets of rules, procedures and measuring means are considered. Separately in article the question of redundancy of data for which solution it is offered to use the National Instruments PXI platform which is turning on the reconfigurable input-output module (R-series module) is considered.

Keywords: metamodel, complex system, geographic information system, compression data

The article describes the main principles of the movement around the circumference of the cranes circular steps. It is proved that the defining characteristics of the organization of the movement of the crane on the circle are the geometric parameters of the mutual reversal of the running wheels of the crane, not the observance of the reversal determines the transverse slippage of wheels of the crane, and the shape of the wheels depends only on the elastic longitudinal slide. The result of slides and slippage is firing the head of the rail with one hand and the loss of stability when moving the crane. Stability stability ensures the achievement of the precision targeting of the gripping device. These parameters are the main performance characteristics that should be valued in absolute terms should be minimal.

Keywords: nuclear power station, crane circular steps, suspension bridge crane, suspension wheel, cylindrical wheel, bevel wheel, the mutual reversal of wheels