This article describes the issues on the basis of scientific research and the data produced in-depth analysis of technical condition of water spending long maintained facilities for further classification of defects and damages, as well as the prediction of their remaining life. Mathematical and software was built on the length of the projected water filtration since the beginning of the construction survey. Program - technical complex in the survey predicts the loss of bearing capacity as the structure as a whole and its constituent elements from the moment of injury. In the future, software and hardware predicted time total loss bearing capacity of the construction, using various regression dependence. Technical possibilities of application systems allow calculation of the geometric characteristics of different defects and damages on the surface of structures, and in some of its elements. Presented Program - technical complex for solving the problem of forecasting residual resource of water conveyance structures can be used to create a database during the operation of these structures over a long period of operation that will extend the life cycle of water conveyance structures with regard to their reliability parameters. The basic provisions on the organization of determination and prediction of residual life long maintained water conveyance structures, identification of defects and damages, assessment of suitability taking into account the reliability of the parameters, for further use water conveyance facilities.

Keywords: monitoring, automation, carrying water facilities, livneotvodyaschie facilities, software and hardware, reinforced concrete, technical condition.

We investigated the creep of concrete arches based on the following theories: the theory of linear creep by Harutyunyan-Maslov, kinetic theory, the theory of flow, theory of aging, and nonlinear theory of Y. Gurieva. We considered viscoelastic model of the concrete, ie total strain was represented as the sum of elastic strain and creep strain. Solution of the problem was carried out by finite element method. We considered the arch rigidly clamped at the ends and loaded with a uniformly distributed load. Graphs of growth of deflection and stress distribution in the reinforcement and concrete are represented. We obtained the substantial redistribution of stress between the reinforcement and the concrete during creep: in reinforcement stresses increased and in concrete stresses decreased. The strongest redistribution occurs on the theory Y. Gureva.

Keywords: reinforced concrete arch, creep theory of heredity, aging theory, the theory of flow, kinetic theory, finite element method, stress-strain state

Failure of communication equipment and automated control systems by the fire of the State Fire Service of the Ministry of Internal Affairs of the Russian Federation, leads to a significant reduction in staffing it and, as a consequence of this, to the disruption of assigned tasks. Proposed generalized analysis allows to take into account all the factors affecting the recovery process as a single sample and the communication system and create a conceptual model of the recovery process communication equipment repair bodies of technical communications and automated control systems of the State Fire Service of the Ministry of Internal Affairs of the Russian Federation.

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

The article describes the slow flying drones with reference to problems of aerial photography. As an alternative to multicopter proposed aerodynamic design, elliptical flying wing. It has been shown that this scheme allows ensure uniform distribution of lifting force along the wing span, respectively, does not allow on loss of unmanned speed bogged down into a tailspin. The results of mathematical modeling and flight test a prototype of this type of UAV.

Keywords: unmanned aerial vehicle; elliptical wing; control laws; mathematic modeling; drone aircraft

This article discusses the concept of information security, its structure and development stages, shows the diversity and the equivalence of the remedies and discusses existing approaches to the formation of protecting corporate systems on the basis of which it was proposed to address this problem, based on the method of decision theory.

Keywords: information security, information security devices, knapsack problem, points of placement of remedies of information security, the formation of information security, distributed systems, mathematical model

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