The task of this work is a survey of passenger correspondence, a traffic intensity survey ,a passenger traffic survey of the road net on the example of Sochi. Used methods: passenger correspondence polling by questionnaire, statistical analysis for the array of correspondence processing, observation, registration and analysis of traffic and passenger intensity.

Keywords: passenger correspondence, traffic, public transport, passenger traffic

In this paper, we study the frequency dependence of the inductor with a ferromagnetic core in the sound frequency range. Based on the measurements made, a replacement circuit for the coil is constructed, taking into account the active losses due to magnetic hysteresis, as well as the capacitive component of the current appearing at higher frequencies. The method of determining the parameters of the substitution scheme is given in the article, which, due to the complexity of the mathematical model, was determined by statistical averaging of the solutions of systems of nonlinear equations. Conclusions are made about the practical application of this substitution scheme in electronic devices.

Keywords: substitution scheme induction coil, frequency dependence of the impedance of the induction coil, active losses in the core

In article metallurgical production as the metallurgy is one of the main sources of technogenic environmental pollution and a working zone is considered. Authors have described the main sources of formation of fine dust by results of which the analysis of fractional structure of the dust particles which are allocated during the operation of the arc melting furnace has been carried out. The submitted data demonstrate that the dust coming to rooms of the shop has the sizes from 3 to 18 microns. The share of mass of particles with sizes less than 10 microns in air of the electrosteel-smelting shop makes from 15%.

Keywords: fine dust, disperse analysis, sources of formation of dust, steel-smelting furnace, metallurgical dust

The article describes the possibilities of data backup with the help of cloud services in data management in networks. It also describes how to create backups, how to verify the integrity of files in a backup, and how to ensure the reliability of the copies themselves. The formulation of the problem is formulated as follows: it is necessary to find the best way to store backup data ensuring the best safety of these data at the lowest cost and reduce the complexity of the backup. As optimization criterion in this study was considered work on backup software, data storage reliability, the integrity of the files in the backup, the financial costs for providing backup. Analysis of the results of the study showed that the storage of backups in the cloud compared to traditional methods of backup - more profitable in many aspects. In modern data centers due to the large scale of the level of reliability of data storage is much higher, the cost of disk space does not vary significantly with the cost of purchasing hard disk and automatic backup check allows you to save a lot of time.

Keywords: Backup, backup, cloud technologies

Researches of hardness of various steel grades for the purpose of determination of density of their distribution and distribution of extremes of selections are conducted. Results of the received researches are used for definition of a resource of details with use of a graphic method of transition from selection to set.

Keywords: selection, fatigue resource, population of final volume

The peculiarities of the deformation diagram under short-term central axial compression of concrete of the frame structure of class B60, obtained by immersing a large aggregate in a low-viscosity solution component, are revealed. The boundaries of microcrack formation of concrete are determined. A good correspondence of the main regularities of the change in the tensile strength and deformation properties of a concrete frame structure with some known data is shown. The possibility of an analytical description of the deformation diagram of a concrete frame structure known formula Sargine (Sargine) is confirmed. Data are presented on the change in the initial modulus of elasticity, the Poisson's ratio, the change in the volume of concrete and the propagation velocity of ultrasound in concrete, depending on the level of loading. The ratio of cubical and prismatic strength is given. The conclusion is made about the expediency of using concrete frame structure in reinforced concrete columns.

Keywords: concrete frame structure, tensile strength, modulus of elasticity, deformation diagram, parametric points, microcrack formation, superplasticizing additive

Current problems of information modeling technologies are considered. Models of effective enterprise management at various stages are proposed. Recommendations are given on the calculation and verification of management systems, which allow to obtain the greatest economic effect with minimum risks

Keywords: organization of construction; innovation; methods of company management; project management

The appearance of new types of polymer gratings on the market, which have other functional and technical-operational indicators, raises the question of new kinematic solutions to their work. In this paper, questions of parametric optimization of the functioning of this type of sieves from the angle of their origin and kinematic sieves are considered. We have carried out a system analysis of existing technological schemes of lattice mills and identified promising areas of modernization.

Keywords: system analysis of technologies, grain separation, grating mill, parametric optimization, seed material, seed injuries, post-harvest grain processing

The article studies the problems of training of students in construction universities. The actual curricula of training, the possibilities of the educational environment, the requirements for the teaching staff are analyzed. The most acute and important problems are identified in the field of education, primarily in the construction sector

Keywords: training in a construction college, pedagogy, technical specialties

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

Diffraction characteristics of the gratings are calculated by two methods - method of approximate boundary conditions and a strict method based on the numerical and analytical solution of the two-dimensional integro-differential equation. Results of the graphene diffraction gratings calculations are presented.

Keywords: graphene, graphene gratings, volume integral equations, plasmons, coefficient of reflection

The complexity and high cost of multiplexing optical fiber sensors is still the main limitation for the widespread introduction of sensory systems, both distributed and quasi-distributed, and point-like. The article proposes a new multiplexing method that takes advantage of both broadband and two-frequency radio-photon multiplexing systems. The simplest broadband radiator is taken from the first, but a complicated and expensive system of spectrometry is not used to determine the central wavelength of fiber Bragg gratings. From the second, a recording system is used at the beat frequency between two components, but an expensive system for generating two- and polyharmonic probing systems is not used. The multiplexing parameter is determined by the frequency of separation between the transparency windows of a fiber Bragg grating, for example, with two phase π-shifts, which differs by a certain value for each of the sensors. The mechanism of modeling of gratings of the specified type is given, in principle the possibility of multiplexing of various number of sensors is shown. When using sensor networks built on the basis of passive optical, the number of multiplexed sensors can reach 256, with all sensors having the same Bragg wave of the wave, and can be combined into tree, bus and other topologies.

Keywords: fiber Bragg grating, phase inhomogeneity, fiber optic sensor, multiplexing, transparency window, frequency difference between transparency windows, beat frequency

One of the most important advantages of the ion lasers based on the ion transitions of metal vapors and noble gases, is the high quality of radiation (high monochromaticity and coherence). However oscillation on each of active media takes place on restricted number of laser transitions. The purpose of this work is receiving a laser radiation at the same time on several quantum transitions in the wide range of wavelengths when using mix of several active mediums. That increases a set of the laser lines radiated by one laser. The characteristics of ion laser transitions (gain, power, noise level) are substantially improved if a hollow cathode transverse-type discharge is used for pumping of the laser transition, and such method of a pumping was used in this work. It was experimentally found the discharge conditions providing various ratio of laser output power on various laser lines for laser on mixture of helium with cadmium and mercury vapors in which the population inversion and laser oscillation are carried out on mercury ion transition with the wavelengths of 615nm (red), and on cadmium ion transitions with the wavelength of 533,7&537,8nm (green) and 441,6nm (blue), and also for laser on mixture of helium with mercury vapors and krypton which lasing on 431,8nm and 469,4nm blue-green krypton ion lines and 615nm red and 794,5 nm IR mercury ion lines. The studied lasers can be useful at information processing, in a metrology, etc.

Keywords: ion metal vapor laser, hollow cathode discharge, the combined active media

Now elements of natural structures of the world surrounding us form a basis for loan by their architects and designers in their professional activity. It is caused not only by esthetic appeal of natural objects, but also big functionality of their form providing high degree of durability, reliability, adaptation to the changing external conditions, comforts of their use as inhabited and production rooms. In this work the analysis of the VAT of an oviform envelope under the influence of sole weight and intrinsic pressure is provided.

Keywords: intense strained state, finite element method, oviform envelope, sole weight, intrinsic pressure, analysis, efforts, deformation

Technical and economic indicators of different options of structural solutions of overlappings are compared. According to the results of the calculations, the most economic profitable option is determined.

Keywords: floor, reinforced concrete, ribbed, monolithic, precast, hollow, profiled, flooring, steel concrete, consumption, reinforcement, concrete, labor input