The article discusses the generalized algorithm of processing of weakly formalized information in technical systems on the example of the control of non-equilibrium chemical reaction such as the Belousov-Zhabotinsky reaction. The reaction occurs in a container placed in a thermostat. By container summed tubes on which the container through the valve receives a reagent solution. The contents of the container is stirred with a mixer. In the container occurs reactions, and the excess solution is drained through the drain. The problem is following. It is necessary valves that regulate the rate of arrival of solutions into the container and stirrer speed adjusted so as to obtain a stable periodic repeating pattern. In the reaction can be seen as a change of color of the solution from red (high concentration of cerium ions with a valence of 3) to blue (high concentration of cerium ions having a valence of 4) and back to the period of a few minutes. In the article described in detail the use of the generalized algorithm to solve of the problem of regulating of valves and mixers in the container.

Keywords: weakly formalized information, information processing, algorithm, non-equilibrium chemical reaction, Belousov-Zhabotinsky reaction, control

Failure of communication equipment and automated control systems by the fire GPS MES of Russia, leads to a significant reduction in staffing it and, in consequence, to the disruption of assigned tasks. The proposed conceptual model and its verbal description allowed to identify bottlenecks in the process of restoring the vehicle to repair the organ, and in its financial support in the form of appropriate repair kits of spare parts, as well as its efficiency in the reduction of the distribution group damaged samples according to multiplicity created ZIP.

Keywords: communication, communication technology and automated control systems, technical support communication and automated control systems, recovery, repair, maintainability..

The system is intended to automate the procedure of 3D-models calculation and formation for cooling heatsink of electronic components. Based on user input, the system calculates the design parameters of the heatsink in the mathematical core, then data enters the geometric kernel, where the construction and rendering of 3D-model takes place. The system allows to choose the type of heatsink being constructed, the method by calculations will occur, dimensions and material properties. The result is a 3D-model of the heatsink suitable for use in the design process.

Keywords: heatsink, computer-aided design, automation system, radioelectronic equipment, parameterization, geometric modeling, API

In this paper we propose mathematical model of implicit-pole synchronous generator of mini-CHP. The model is based on a full Park-Gorev differential equation. The saturation of the machine is taken by using the method of partial magnetic characteristics. This method allows most accurate evaluation of the change of parameters of an equivalent circuit of the nonsalient-pole generator in the absence of information about the magnetic properties of the machine. The model is Implemented in Simulink. Application of the model is possible when calculating the steady-state and transients in distribution electrical net wich contains implicit-pole synchronous generators.

Keywords: nonsalient-pole synchronous generator, implicit-pole generator, mathematical model, Park-Gorev differential equation, magnetic characteristics, transients

Computer-aided design (CAD) and computer-aided manufactoring (CAM) have became an increasingly popular part of dentistry over past 25 years. The technology, which is used in both the dental laboratory and the dental office, can be applied to inlays, onlays, veneers, crowns, fixed partial dentures, implant abatments, and even full-mouth reconstruction. This article discusses the history of CAD/CAM in dentistry and gives an overview of how it works. It also provides information on the adventages and disadventages, describes the main product available and addresses future applications.

Keywords: Computer-aided design, computer-aided manufactoring, dentistry, user-computer interface

Technology mechanical point-shock engraving on photo printer for printing on products is particularly popular among specialists designers because the entire process of creating images and computer training to the engraving is very creative and at the same time allows you to make adjustments to the customer at any stage without much effort or loss of quality and time. To solve this problem it is necessary to analyze the causes of the marriage; determine the types of marriage by using technology of printing on the surface of the product mechanical point-impact photo printer and suggest methods to eliminate it.

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

The article presents basic equations for reinforced concrete elements that are experiencing bending moment and axial force, taking into account the creep of concrete. The stress-strain state of reinforced concrete statically determinate three–hinged arch is investigated on the basis of these equations. Also for this task we gained the resolving equations of finite element method and compared the numerical-analytical calculation with the numerical performed using the finite element method to the arch loaded with a uniformly distributed load and having the shape of a circular arc. The calculations used viscoelastic model, according to which the total deformation is the sum of concrete elastic deformation and creep. We consider a rectangular cross section with symmetrical reinforcement. It is shown that because of creep stress redistribution between concrete and reinforcement arises.

Keywords: finite element method, the creep of concrete, viscoelasticity, reinforced concrete arch, the stress–strain state.

The article presents the results of an experimental research on the effect of the pulsating mode a capacitive heat exchanger with an active pipe part on the convective processes heated fluid. Described dignity capacitive heat exchangers. The research was conducted using a thermal imaging surveys. Compares two modes: stationary and pulsating. The method of experimental data processing, based on the analysis of fluid layers. A regression analysis allows to determine the dependence of the relative distribution of the temperature difference between the layers of fluid in the studied mode. The obtained regression equations were presented in the form of an exponential function and harmonic. The effect of pulsing regime on the process of convection in the upper quarter of the heating zone in a capacitive heat exchanger. The study showed the advantage of the capacitive heat exchanger with an active pipe part is often compared with the classical heat exchanger in part the speed of convective processes in the fluid to be heated.

Keywords: capacitive heat exchanger with an active pipe part, pulse heating system, convective process

In the development of resource-saving technologies of processing of sloping lands, which provides deep loosening, it was developed and patented a new method of processing initially resistant sloping lands, aimed at subsurface moisture accumulation on the slopes. A mathematical model of steady state, designed to study the issue of stability of surface soil moisture saturation. A new method of calculating the limit conditions for holding the treated soil moisture saturation on the slope. Define the tasks of the theoretical calculation of the balance of forces applied to the considered solids on an inclined surface. Analysis of the results revealed that the treated layer will be in a state of stable equilibrium.

Keywords: steady state equilibrium conditions, the system deformers, traction, breaking up the area

Results of research of fixture of a wooden design of the river mooring in Rostov-on-Don, being in operation within more than 150 years are presented. As the fixture was possible to be taken from a design in a single copy, it wasn't represented possible to apply destroying test methods. Therefore mechanical characteristics of metal were measured by means of system of nondestructive control "Durability", developed at the Rostov state construction university and a portable tverdomer with ultrasonic and dynamic sensors. Approximate compliance of strength characteristics of studied metal, allegedly krichny iron is established, to characteristics let out now staly. Approximately on a fluidity limit studied metal corresponds to a limit of fluidity of St3 steel. The short analysis of loss of the area of live section of fixture and the forecast of possible further operation of a design in the assumption is made that conditions of this operation won't change.

Keywords: non-destructive testing, mechanical properties, strength, diagnostics, a priori information, test the metal

The article discusses the liveability as a key condition for sustainable development of territories, presents the criteria to assess the level of sustainable development of the area municipalities. The criteria of evaluation of the quality of the environment, as well as the interaction of the three components of sustainable development of the territory.

Keywords: sustainable development of the area, comfortable environment, the stability of the system, the quality of the environment, spatial planning

We obtained the solution of the optimization problem for the step-parallel beam with constant width of the cross-section. The problem was solved by minimizing the strain energy while the volume of beam is constant. The solution was made for the case of simple support at the ends and evenly distributed along the length load. We introduced the parameter α, which is the ratio of height of the average part to a height of side parts. The optimal value of α was found. At this value the stiffness of the beam is maximum at constant volume. The obtained beam of maximum stiffness is not equal strength.

Keywords: optimization, speed-prismatic beam, the strain energy, variable stiffness, minimum

We solved the problem of optimizing the gable beam by minimizing the strain energy at constant volume. The problem reduced to an integral equation for determining the optimum angle of the beam. This equation was solved numerically by the method of bisection. Integral was calculated using the method of trapezoids. Solution was made in software package Matlab. The optimum angle depends on the width of the cross section b, and the volume of the beam. It was found that with increasing of width of the cross section the optimum tilt angle decreases. Also the volume increases by increasing the width of the beam.

Keywords: optimization, gable beam, strain energy, variable rigidity, minimum volume, method of bisection

In the context of the autonomous functioning of special equipment in the Far North and the Arctic is necessary to use its internal resources to maintain optimal thermal state units and units. This can be accomplished using a heat recovery system of the internal combustion engine. For this purpose the heat accumulator. The mathematical modeling of the thermal state of the heat accumulator in the cooling stage. The main factors affecting the cooling time of the thermal battery: TA insulation thickness, weight coolant, coolant temperature, air temperature, wind speed. Also developed a mathematical model of the process of cooling the heat accumulator in general terms. It is presented in graphical form, which simplifies the determination of the time of cooling the heat accumulator in its design. For the definition of Q and Bi developed a program «Time».

Keywords: operation, heat storage, thermal preparation, heat transfer, heat recovery system, low negative temperature

Results of researches on influence of heat treatment on physicomechanical properties of the clay slates and sandstone extracted in the Rostov region are stated. It is established that the decorative effect for clay slates can be gained by heat treatment at temperatures of 300-500C then rock on all volume changes color with gray to the red-brown. Thus durability of samples at a bend increases by 20-70%. For change of color of a front surface of natural stones structures of coverings on the basis of phosphatic sheaves and the developed low-temperature enamel were considered. For giving to a layer of necessary flowers various ceramic pigments were used. Frost resistance of stones with coverings on the basis of phosphatic sheaves and enamel more than 50 cycles that testifies to the high durability of coupling of a decorative layer with a stone surface. It is defined that by use of simple technological decisions and inexpensive raw materials, the range of flowers of natural stones can be expanded significantly.

Keywords: natural stone, heat treatment, volume coloring, decorative covering, durability, water absorption, frost resistance