The methods of the diagnostics and oil-and-gas installations state analysis reliability increasing based on usage of the parametric methods of statistics are discussed in this paper. The variance analysis of the mechanical properties of the pump rods made of normalized steel is given in this paper (according to the data of the manufacturing plant for the period of 10 years). It is found that breaking point and yield stress are distributed with the truncated normal laws in the region of minimum values. The obtained average values and variation coefficients of the mechanical properties within the steel grade permit to calculate the statistically significant changes of the mechanical characteristics. The correlations between Vickers hardness and breaking point (Vickers hardness and yield stress) in the case of steels produced in the Russian Federation for the pressure-operated vessels are also presented in this paper. These correlations permit to determine the strength characteristics with the relative error of 12% according to the hardness value. In the case of transferring the obtained correlations on the steels produced in Japan the systematic underestimation of the yield stress is 0,85 fold with respect to the value given in the certificate. The factors that influence on the microanalysis sensitivity and accuracy are revealed, the optimal scanning electron microscope mode and research conditions for the chosen patterns are also determined. Evaluation of the systematic inaccuracy of determining the carbon content in the steel is obtained in this paper. It is found that the measurement error for the scan area from 3 x 3 to 20 x 20 mm and accelerating voltage from 10 to 15 kv is minimal. The usage of the obtained results permits to increase the validity of the findings in the diagnosed installations condition evaluation and determining the conditions of their further exploitation.

Keywords: diagnostics, oil field equipment, parametric statistics, variance analysis, precision of measurements, mechanical properties, microanalysis

A certainly-element model is worked out soil-fundamental flag-overhead structure. The tensely-deformed state of fundamental flag is investigational taking into account the models of Winkler and Pasternak. On results a calculation charts are got diagrams sinking of fundamental flag.

Keywords: certainly-element model, Winkler elastic foundation, Pasternak elastic foundation,, coefficient of subgrade resistance, sinking of fundamental flag, stress-strain state

When creating and using of medical systems and devices for various applications, considerable importance is periodic verification and testing of such systems and devices. In addition to checks are also conducted medical and technical tests in setting on the production and commissioning. This article discusses an approach to the construction of optimal calibration systems and devices for testing of medical devices that are used to create and maintain modern medical technology. The most popular and accessible systems from companies such as General Electric Medical Systems IT, Natiоnal Instruments, DIATEST considered in this article. The estimation of the effectiveness of these devices in various stages of development and testing of medical devices. The paper discusses examples of the construction with the use of modern laboratory information environment LabVIEW. The present approach permits to select a sufficiently effective suite for verification and testing of medical devices in the company and for the training of students. Based on the findings made in the article, you can choose the most appropriate complex for initial verification of medical equipment and for periodic calibration.

Keywords: calibration, testing, medical equipment, instrumentation, electrophysiological signals, automation

It is shown that the current direction of the development of electronic document management is the transition to the information systems that support the dialog interaction with the user in natural language. This area is challenging because of exponential growth of data processed by modern information systems. Described the problem of converting verbal criteria describing properties of the required data, SQL queries, implementation of which will allow to obtain the required data. As a practical example, the selected task is the classification of employees in three clearly defined categories: ""small experience"", ""average experience"", ""great experience"". Before you create a database assumptions were adopted: the experience of employees is taken into account from 0-25 years. The time period to 7 years is an indicator of employees with low seniority. As close to a group of employees with secondary seniority are those who have work experience of 8 to 13 years; a great experience – more than 15 years. Create table ""Employees"", consisting of the following fields: id, name, Sex, Phone, notes, date of hiring, date of dismissal, work Experience in similar position, Experience just. The work deals with the queries to retrieve data based on the SELECT statement of the SQL language. Mathematically formalizing verbal filter criteria data was formalized with trapezoidal membership functions. Describes the implementation of the conversion process trapezoidal membership functions in SQL queries against a relational database. Implemented conversion mathematically consistent as the theory of fuzzy sets and the concept of relational databases (i.e. SQL standard). Compliance transformation of fuzzy set theory in the future will allow the use of operators for manipulating sets (Union, intersection, etc.), and compliance with SQL to practically implement the proposed approach by means of a broad class of relational database management systems.

Keywords: fuzzy logic, membership function, fuzzy set term, linguistic variable, database, fuzzy queries, the index of conformity,a-slice

In this paper, we consider the problem of development of equivalent circuit of non-linear element with the current-voltage characteristic controlled either voltage or current, which can be modeled without any changes of scheme in accordance with design requirements. For solving the problem we use an analog-digital-analog element. The current-voltage characteristic of this element is determined by the program of the digital device work. To approximate the characteristics of non-linear elements we apply polynomials of varying degrees - segments of the Taylor series, Maclaurin, Lagrange, et al. In our opinion, the solution of such a problem is relevant.

Keywords: Synthesis schemes, non-linear circuits, equivalent transformations, analog-digital-analog element, non-linear resistance, controllable voltage source, Taylor series, Maclaurin, Lagrange polynomials

Studies of gender and family dynamics in society are of great interest for foreign and domestic scientific communities. The results of studying the trends in these areas from the point of view of the students about the "ideal behaviour" of modern men and women are very important, as the social group of young people has always been and is a specific indicator of the state of the society. Today, the availability of various models of the behavior of the sexes is significantly determined by the media. However, new, variable "patterns of behavior" in society does not mean denial of traditional patterns of conduct of men and women. Despite some "westernization" of the young Russians, the national gender factor "works" thereby consolidating society and preserving the national identity of individuals.

Keywords: gender, family, values, youth, student youth

The present article is concerned with noncontact method development of energy transmission and receiver probes information readout provided to monitoring permanent sets development in the road construction elements.Method is based on telemetering of elastic and plastic strains which accumulate in the road constructions under the action of traffic loads and climatic factors under actual road operating conditions. This method can be used either for highway and for special ground. Designed method make it possible both long-terms and short-times examinations and substantially enhance reliability and efficiency of receiver probes.

Keywords: receiver probes, monitoring of road constructions, noncontact method, permanent set

In this paper, we develop search method of facts introduction of design objects in the environment of the city historically developed and the analysis of these facts. The developed method of analysis to help find meaningful connections and characteristics of the historical environment of the urban fabric and the newly formed urban context. The selection of existing methods and techniques for design and implementation of objects their classification have been made on the example of the southern Russian cities (Rostov-on-Don, Taganrog, Azov). The results of these studies may provide a basis for the development of effective methods for correcting historically valuable medium by means of design.

Keywords: design, historical environment, factual analysis ,,modernization, modern trend, system studies

The development of small business in crisis conditions, makes the application of the patent system of taxation to be justified and effective. Measures of state support of subjects of small business is ineffective and does not contribute to their growth and development.

Keywords: small businesses, the patent system, taxation, government support measures, special tax regimes

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

Article is devoted to questions of features of providing effective communication policy of the construction enterprises. Questions of the organization of marketing communications in the construction sphere through the specifics of branch are considered.

Keywords: marketing communications, efficiency of marketing communications, features of marketing communications in the construction sphere

In article the sources of financing of small business, factors influencing ensuring financial stability of the small construction organizations are considered. The main problems of activity of the small construction enterprises are allocated, the analysis is carried out them and possible solutions are offered.

Keywords: sector of small business, small construction organization, sources of financing of small business, stable financial state, financial and economic crisis, sustainable development

The article considers the industry diversification of loan portfolios of the largest banks, and the relationship of the loan portfolio of these banks with the GDP of Russia. Built industry-specific scale, identify the most important branches in the field of lending.

Keywords: Loan portfolio, industry diversification, credit risk, structure.

With saturated boiling in water-ethanol 20 % wt detected peak flux qcr = 1.19 MW/m2. and at TL=70 the size qkp considerably increases to 9,80 MW/m2. The article contains results of the experiment on subcooled boiling in a mixture water-ethanol 20%. With growth subcooling is increased qcr, Тcr and αcr. The main factor is the sharp rise qcr increase wall temperature ∆Т=Тcr -ТL

Keywords: surface boiling of mixture, peak flux, wall temperature, critical heat transfer coefficient

in modern conditions become widespread trenchless methods for the construction of pipelines. The positive features of their use include increased speed pipeline installation, reducing the volume of excavation, etc. Existing regulatory documents limit the bending of the pipe at low temperatures need to be tested in terms of their applicability to new grades of polyethylene. The aim of this study was to determine the minimum permissible bending radius of the track, the passage of which in the conditions of negative temperatures polyethylene pipes PE80 would maintain its strength characteristics. By using a mathematical model dependency of the elastic modulus and yield point are calculated from the temperature stresses in the walls of pipes of different diameters in bending under different temperatures. In order to establish empirical relationships voltage on the pipe diameter and the radius of its bend procedure is carried out function approximation method of least squares. Presented obtained graphic dependences. Using the values ​​of the yield strength of the material at different temperatures were calculated bending radius of all dimensions. If the production of the track plow trenchless pipe-layer will be considered given the conditions, you will be provided with the necessary conditions for installation.

Keywords: plastic pipe, trenchless pipe layer, the stress-strain state, trenchless techniques, pipelining