×

You are using an outdated browser Internet Explorer. It does not support some functions of the site.

Recommend that you install one of the following browsers: Firefox, Opera or Chrome.

Contacts:

+7 961 270-60-01
ivdon3@bk.ru

  • Samouplotnyayushchiesya fine-grained fibrobetony with the application of withdrawals of lithotrity

    Are given the results of studies on the creation of samouplotnyayushchikhsya fine-grained fibrobetonov on the withdrawals of lithotrity with the application of a polyfunctional additive D -5. Are developed the compositions of samouplotnyayushchikhsya fine-grained fibrobetonov with the application of a basaltic fibre, which make it possible to considerably decrease the expenditure of cement and to improve the characteristics of fine-grained concrete mixture and concrete. The use of a polyfunctional additive D -5 in the mixtures makes it possible to increase the strength properties of fine-grained fibrobetonov with a simultaneous improvement in the rheological characteristics of concrete mixtures. The replacement of cement to 10 % from the mass by ashes of fraction d0,14 mm in the fine-grained concrete mixtures does not cause noticeable reduction in the strength properties of concrete. Developed samouplotnyayushchiesya fine-grained fibrobetony possess the increased strength properties and have low prime cost due to the use of local raw material and withdrawals of lithotrity

    Keywords: cement, the withdrawals of lithotrity, ashes, polyfunctional additive D -5, basaltic fiber, samouplotnyayushchiysya fine-grained fibrobeton, strength for the bend and the compression, the mobility of mixture, the plan of the experiment

  • Simulation of the design activity diversification of innovative enterprise

    The main target of sales policy in a competitive environment is customer funnel and customer loyalty. Sales approach involves encouragement of customers, vendors and business partners. Advertising is a means of a sales activity. While determining the most efficient way of distributing expenses for the purpose of advertising, it makes economic sense to use mathematical methods of programming and statistic analysis of target audience. It is able during the analysis to determine the most efficient time and location for ad placement, possible target audience and its income level. A method of calculating should be selected in order to gain more profit and incur less expenses. This is Fore and Malgrange method which allows to do so. Benefit of this method is optimality test in the process of decision making. Keywords: merchandising, advertising, sales, profit-making organization, sales approach, radio advertising, profit maximization.

    Keywords: sales promotion, advertising, sales, social - demographic preferences, effective planning, profit maximization, the method Fore-Malgrange

  • "Strategies of self-control and communicative representatives of different professions "

    The theme of self-presentation is particularly relevant in today's world, where a person has to exist in a large number of roles implemented them in different areas of life: in the family, at work, in the company, the political arena, and others. The development of skills of self-presentation, the adjustment of its strategies is important for staff management structure. Methodical toolkit: Methodology S.-ZH. Lee and B. Quigley measurement tactics self (Self-presentation tactics scale, S.-J. Lee et al.); Scale of self-monitoring M. Snyder (Self-monitoring scale, M.Snyder). The reliability of the results obtained in the study was provided by using the methods of mathematical statistics: the criterion U-Mann-Whitney test H Kruskal-Wallis test [3]. We used the program Statistica computer processing data 6.0.Strategii self differently distributed in groups of professions related to the different types of professions. The level of communicative control is different in severity presented in this study, groups of professions.

    Keywords: Self-presentation, self-presentation strategies, self-selection strategies, communicative control artonomichesky type professions signonomichesky type occupations, professions socionomic type

  • Modeling of distributive processes on the basis of dynamic problems of vector optimization

    The dynamic model of continuous distribution process allowing on the basis of sampling in time to reduce the corresponding generalized dynamic task to a problem of vector conditional optimization is considered. By means of optimization of weight coefficients of the scalar criteria encapsulated in criteria rollup on the basis of the generalized functional ratio expressing understanding of an intercriteria compromise the possibility of establishment of the most acceptable quantitative preferences between alternatives is shown. The offered approach allows to regulyarizirovat algorithms of dynamic planning for single-product distribution systems, having eliminated the developed obvious dependence of optimization process and results of adoption of multicriteria decisions on expert procedures and heuristic factors.

    Keywords: distribution systems, dynamic processes, mathematical modeling, vector optimization, multicriteria decision making, parametrical rollup of criteria, alternatives and compromise

  • Sravnitel'nyy analiz dorozhnykh konstruktsiy po kriteriyu ustalostnogo razrusheniya

    Privedeny rezul'taty sravnitel'nogo analiza dorozhnykh konstruktsiy na uchastkakh avtomagistraley M-4 i M11 po kriteriyu ustalostnogo razrusheniya. Predstavlen sopostavitel'nyy analiz rezul'tatov po predlagaemoy metodike, osnovannoy na summirovanii deformatsiy, nakaplivaemykh v pokrytii za ves' srok ekspluatatsii, i normativnoy metodike ODN 218.046-01.

    Keywords: proektirovanie, nezhestkie dorozhnye odezhdy, asfal'tobetonnoe pokrytie, ustalostnaya dolgovechnost', raschet

  • The mathematical description of grinding particulate materials by impact

    Grinding particulate materials by means of impact is one of the most effective methods , especially when you want to obtain fine and superfine grinding . The most significant drawback - rapid and uneven wear on the blades and pneumatic organs. To solve this problem it was proposed to organize the interaction of shock . However, implementation of this method requires the establishment of methods for calculating the parameters of flow , as the incident on the bump , and ref"lected from it .

    Keywords: crushing blow , collision, the diameter of the mill , the material particle , bump , flow , interaction, wear

  • Improving the quality of bricks semi-dry pressing made on the basis of clay raw materials of the Kagalnik-3 field

    Results of researches on improvement of quality of the brick made of clay Kagalnik-3 raw materials are presented. It is defined that raw materials contain a large number of particles less than 1 mm in size that complicates receiving press powder of the recommended granulometriya. In addition, because of high sensitivity of raw materials to drying, on samples there are drying cracks influencing durability and frost resistance. It is defined that for receiving qualitative products, except softer mode of drying, for increase in physico-mechanical characteristics it is necessary to add the mineral modifying additive to furnace charge, and to carry out preparation of press powder with preliminary plastic granulation of weight.

    Keywords: clay raw materials, ceramic brick, semi-dry pressing, press powder, sensitivity to drying, advanced plastic recycling, granulation, modifying additive, strength, frost resistance

  • Investigation of surface morphology and electrical silicon film after laser annealing

    Currently, laser annealing are widely used to create a polycrystalline silicon film, which is promising for use in thin film solar cell, and transistors, liquid crystal displays and sensors due to recrystallization of amorphous and nanocrystalline silicon films. The study of morphology and surface conductivity of single-crystal silicon film on a glass substrate by laser annealing power. Laser annealing is carried Nd: YAG laser with a wavelength of 532 nm, speed of movement of the stage with a specimen of 5 mm/s and a laser power ranging from 34 to 86 watts. The laser beam was focused on the sample in the form of a narrow line width of 10 microns and 60 mm in length. The dependence of the size of the nanocrystals and the conductivity of silicon films on the power of the laser annealing radiation. It is shown that the power of the laser radiation in the range of 60 to 70 W is optimal for the best electrical parameters silicon film for the purpose of its use in high-performance thin-film solar cells.

    Keywords: silicon film, laser annealing, surface morphology, electrical conductivity, thin film solar cell

  • About the results of preliminary tests of beams on the transverse force before strengthening them by the composite reinforcement.

    Have been given the substantiation of the need for preliminary testing of concrete beams on the transverse force. Their goal is to determine the effect of inclined cracks formed at the operating load levels, on the efficiency of the composite reinforcement in the near support sections.   The results of these tests, obtained with the shear span 1,5h0; 2h0 and 2,5 h0, that significantly affects the nature of inclined cracks. According to the results of an experiment formulated recommendations for the design of composite reinforcement.

    Keywords: concrete, reinfrcement, reinforced concrete composite, CFRP, strengthening, crack, stress level, clamp, shear span, strength

  • To the question about the method of overcoming crisis situations in the operation of investment-construction complex

    The article examines the cognitive method of management of investment-construction complex in the conditions of crisis. Examines the factors influencing the choice of investment strategy, main directions of activities in the field of crisis management.

    Keywords: Economics, organization and management in construction, management of the company.

  • Experimental study on determination of resistance to accumulation of residual deformation of stone mastic asphalt SMA-11 prepared on harmonized compositions

    The article presents a study on the determination of the resistance to accumulation of residual deformations of asphalt concrete, SMA-11 on the device dynamic tests (PDI) the advantage of these over asphalt concrete stone mastic asphalt concrete SMA-10 GOST 31015.

    Keywords: asphalt concrete, stone mastic asphalt concrete mixture, the grain structure, sieve, fraction, residual strain

  • The issues of complex mechanization in the production practice to road construction

    In the construction of linearly extended objects, there are difficulties related to the optimization of flows. This requires the rational distribution of construction machinery fleet. The stream will be optimal only in the case when all processes are performed optimally. Rational distribution of the fleet is that the volume of construction works between the machines assigned in accordance with their highest load. Thus the performance is improved when in-line method of construction, which, in turn, should reduce the cost of socially necessary labor per unit produced by this company products

    Keywords: flow, construction, method, process, technology, roads, land, machinery

  • The phase composition, grain structure and dielectric spectra of the multiferroic Bi1-xGd xFeO3 (0.025≤x≤0.50)

    The investigations of the crystal structure, grain structure and dielectric properties of high-temperature multiferroic Bi1-xGd xFeO3 were carried out over a wide concentration range x = 0.00-0.50.

    Keywords: multiferroic crystal structure, grain structure, dielectric properties

  • Cluster analysis in the automatic identification and accompanied by thunderstorm cells according to the storm  DF network

    Forecast moving thunderstorm cells requires the introduction of modern methods of operational data coming to the workstations in reception centers. For the current forecast weather phenomena emerging need to isolate and analyze the movement of thunderstorm cells according to the lightning detection. For these purposes, developed and improved methods for isolation and maintenance, based on the mathematical apparatus of computer vision.

    Keywords: contour analysis, cluster analysis, hazardous weather phenomena, the current forecast, meteoradiolokatsiya, lightning detection, storm pockets

  • Brush as smart electroengine unit

    The principles of intelligent node of electroengine - brush are discussed. Into the brush an optical fiber sensor of wear and temperature on the basis of serial low reflection fiber Bragg gratings (FBG) is embedded. In contrast to existing, developed sensors are complexed and are able to simultaneously measure the temperature of the shift of the central wavelength of laser radiation reflected by the FBG, the amount of wear by means of registration the change in the length of the FBG arrays. Analysis of the signal reflected from the FBG allows you to define the parameters of the engine speed, temperature changes - the state of brush-collector unit. At a resolution of the interrogator in the wavelength about 2 ps the temperature sensor has resolution 0,2 ° C. Measurement error values of wear sensor, ​​determined by the stability of the amplitude parameters of laser radiation, are near tenth part of micrometer.

    Keywords: friction, complexed fiber optic sensor, fiber Bragg grating, wear, temperature,electroengine, smart brush, rotation speed