In article the developed circuitry decision with high response characteristics of the multistage programmable attenuator very high frequency of power on the basis of low-sized microstrip elements and heterojunction GaAs HEMT of structures is considered. The main aspects of design and functioning of the diagram are described. Results of simulation mathematical modeling are given in a software package of Microwave Office.

Keywords: MMIC, low-sized microstrip structures, programmable attenuator, heterojunction, HEMT, GaAs, Microwave Office.

The authors examine the peculiarities of fiber-optic cable electric parameters changes under the influence of a strong homogeneous alternating electromagnetic field. Variants of the process which can be used to describe the influence of the electromagnetic field on the fiber-optic cable are proposed.

Keywords: Fiber optic cable, electrothermal degradation, kevlar, electrical conduction

The article deals with the design of bimetallic bridges, their advantages in comparison with reinforced concrete bridges. Its given the characteristics and chemical composition of conventional bridged steel and high strength steels. The scheme of dividing continuous lash of span structure into spans is considered and the ratio of spans with equal bending moments is calculated. Its given the calculation of an effective three-span system. The existing efforts and bimetallic standard blocks of three types are proposed for them. Blocks are made of two types of steel: conventional cross section of bridge steel, heavily loaded cross section of structural high tensile. In block A, the lower belt; in block B the lower belt, the wall and thongs of the orthotropic plate; in block K the lower belt and the beam wall is made of strong steel. Such unification will significantly reduce labor intensity and weight of the structure.

Keywords: bimetallic, span structure,steel grade,enveloping the diagram, normal stresses, mounting block, sheet hire

The econometric analysis of GDP per capita in the Russian Federation is being given. The number of the departured people from the Russian Federation, nominal average charged wages and exports volume are used as the exogenous variety. The received model of the multiple linear regression is being studied for quality.

Keywords: gross domestic product, GDP per capita, econometrics analysis, multiple linear regression model, endogenous variety, exogenous variety, heteroskedasticity

The problems of reconstruction of transport infrastructure and road network in residential areas are very important. Transport directly affects the labor and cultural activity of the population, largely determining the technical and social progress of society. Transport highways and street-road network form the frame of the city, form its planning structure. Gravity retaining wall in cross section is a trapezoid with base width of 1.0 m and a width of the top of 0.3 m. the length of the angled sections of the retaining walls were determined from the conditions of placement of the pit for their buildings, side streets the Moscow highway and technical strip for lining of engineering communications. The front surface of retaining walls has a curvature of R=15.8 m. similar to the front surface of the side walls of tunnel overpasses. Frame retaining walls are an inverted U-shaped frame. The front surface of a retaining wall, consisting of paired radial curves of radius R=15.8 m and R=1.8 m. the curvature of the front retaining walls similar to the front surface of the side walls of the underpasses of tunnel type.

Keywords: problems of road construction, roads, reconstruction, Kurumoch, strip, public transport, planning, transportation

A brief overview of the AutoCAD software product is presented, which is a universally recognized world leader in the field of graphical work automation and is gaining increasing popularity in our country. Using the presentation capabilities of AutoCAD, the authors created an electronic training program on engineering graphics, while solving a two-fold problem: on the one hand - to consolidate and popularize the classical educational material at the rate of engineering graphics; on the other - to instill in future engineers the skills of owning a modern "electronic kulman".

Keywords: AutoCAD, Autodesk, presentation, slide, script, engineering education, engineering and computer graphics

The results of studies on the development of composition gypsum solution mixtures on the pumice with the application of a multifunctional additive D, are represented. Are proposed the compositions of mortars on composition gypsum that binding and ashes, that make it possible to substantially improve the physicomechanical properties of solution mixtures and solution. The introduction of multifunctional additive D -5 to solution mixtures makes it possible to improve the properties of composition solution mixtures. The developed composition gypsum solution mixtures correspond to requirements ALL-UNION STATE STAN. 28013–98 and have low prime cost due to the use of the pumice

Keywords: gypsum, portland cement, pumice, additive D -5, composition gypsum mix, transverse strength and compression, density, the coefficient of the softening

Theoretical studies of the temperature distribution during laser heating of the TiO2 precursor film on the FTO/glass substrate have been carried out. The simulation was performed on the basis of a numerical solution of the heat equation in the Matlab program to determine the energy density of the laser radiation necessary for crystallization of TiO2. It was shown that on the surface of the TiO2 precursor the temperature reaches a maximum value at a time point of 133 ns with the Gaussian temporal form of the laser pulse. The optimum energy density for crystallization of the TiO2 precursor film with the nanosecond pulse duration is 1.3-1.6 J/cm2, when the film thickness temperature corresponds to 400-500 °C. The obtained results of the simulation are consistent with experimental studies.

Keywords: numerical simulation, laser heating, temperature distribution, TiO2 film, solar cell

The questions of mathematical interpretation of results of trajectory measurements are discussed in terms of increasing the accuracy of identification of bearings of unmanned aerial vehicles during their movement in a "swarm" - a group. Variants of identification of horizontal and spatial bearings are offered. For each of the variants, criteria are proposed for identifying the belonging of the measured values ​​to the same object in the group and the conditions for achieving them. The situation of false positives is shown. It is determined that additional identification measures are needed to eliminate false bearing triads and uncovered ambiguities, including the use of combinatorial exhaustive search algorithms. For their study, it is necessary to develop an experimental statistical model with an algorithmic description of cause-effect relationships, which is a further development of this work.

Keywords: " unmanned aerial vehicle, group of objects, bearing identification, horizontal bearing, spatial bearing, identification criteria, false notch"

The constructions of directional microphones of the "linear" type and the test procedure are described. On a controlled lane of the highway, full-scale studies of microphones produced by the authors were carried out. Thus, the relative error in the measurement of microphones No. 1 and 2 was found, which was 12.1 and 13%, respectively. The minimum error is detected with a microphone of the "linear" type No. 1, whose slots are located on the sides on four sides

Keywords: transport stream, transport noise, passive acoustic detector, directional microphone

Repair of the bridge superstructures made to restore the performance of the facilities from damage incurred during operation. The main technical measures to improve the durability of structures buildings are reconstruction work on the prevention of water penetration from the roadway construction on the underlying design of superstructures and supports. Repair badly damaged sections of shelves extreme beams of the superstructure shall be mopping up indicators of acidity of not less than pH> 12 (concrete), followed by reduction of the dimensions of the concrete B30; F300 (in Spanish hlor.solyah.); W8 with pre-staging of additional rebar epoxy glue. Repair surface defects superstructures beams includes: To prepare and clean the defective concrete surfaces slabs beams superstructures sandblasting method, a chemical cleaning of the valve; Repair of surface defects of slabs beams non-shrink fast-hardening dry mix containing polymer fiber EMACO®90 and EMACO ®S88C; To restore the protective layer thickness of 20 to 40 mm is provided the use of a repair composition EMACO®S88S. For hydrophobic facades superstructures, attachments, etc. used water repellent water-based to protect concrete surfaces, which is designed for use on old and new concrete surfaces of bridges MASTERSEAL®303V.

Keywords: repair; concrete bridge; superstructures; fittings; waterproofing; anti-corrosion coating; MASTERSEAL; EMACO

In the article the results of the analysis of the main factors affecting the wear mechanism of asphalt concrete pavements are given attention to the properties of the stone material and the binder. The questions of the influence of dust formed as a result of deterioration of coatings on the environment are considered.

Keywords: asphaltic concrete, road surface, environment, wear products, wear resistance, wear factors

Are represented the results of studies on the development of teploognezashchitnykh composition cement solution mixtures on the distended vermiculite and the pumice with the application of a multifunctional additive D -5. Are proposed the compositions of teploognezashchitnykh composition mortars, which make it possible to substantially improve the physicomechanical properties of solution mixtures and solution. The introduction of multifunctional additive D -5 to solution mixtures makes it possible to improve the properties of composition solution mixtures and to improve the characteristics of solution. The replacement of the fine dispersed fraction of the distended vermiculite d0,63 mm does not produce by pumice by the volume in the solution mixtures a noticeable increase in solution density, in this case their strength characteristics grow. The developed composition solution mixtures correspond to requirements ALL-UNION STATE STAN. 28013–98 and have low prime cost due to the use of the pumice

Keywords: portland cement, the distended vermiculite, pumice, additive D -5, teploognezashchitnyy composition solution, transverse strength and compression, the mobility of mixture, exfoliation property, the density

In this article we consider correspondence problem of the supporting parts containing deformable polymers used in the beam bridges (used in bridge constructing - лишнее, мне кажется). According to the shear diagram, supporting parts shall provide free angular and linear displacements of the beams' end faces sections. Otherwise gradual destruction of the nearby areas is possible. We study a rubber supporting part (RSP). Factors contributing to the deformation of the supporting part and their calculation with different algorithms, including the differential equation of the curved axis and Mohr method are given. The values of angular and linear deformations for the concrete reinforced bridge beam are calculated.

Keywords: bearing, adjustable bearing, deformation, bridges, bridge beam, shear strains, angular displacement, linear displacement, crumple.

The article is devoted to the topic of interdisciplinary balance in the solution of problems of the urban transport systems development. On the example of the concept of the transport system in Yekaterinburg development, the authors suggest ways of introducing interdisciplinary research: the author's multi-criteria system for assessing the transport system is proposed. The introductory part of the article is devoted to the formulation of the main goals and tasks of the development of transport systems in the Russian city. When considering the transport system in Yekaterinburg, it is proposed to use the zoning of the city's territory to formulate strategies for its development, taking into account local conditions. Also, the authors propose to take into account at the project level various international trends in the development of transport systems.

Keywords: transport systems, master plan, urban planning, interdisciplinary research