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
The quasi direct currents, which flows through the winding of power transformer, could cause the migration of working point from the knee of the magnetizing curve to the zone of saturation. In that way, the operational mode of power transformer changes. To account the effect of quasi direct current on the operational mode of power transformer was described the model of winding of power transformer with endless magnetic core and cylindrical magnetic cover. Compare the results of accounting model with the model of winding without effect of cylindrical magnetic cover the 20% difference in the characteristics of inductance from magnetizing current in the area of magnetizing currents under 100A was achieved.
Keywords: power transformer, saturation, modeling, the power transformer winding, electric power supply system, quasi direct current, power line, geomagnetic storm, space weather
Summarizes the main approaches to the definition of scientific material resources on the basis of which summarized their formulation. Supplemented by material-types on the project evaluation and measurement database. Extended classification of material resources on the basis of the target, Level substitution degree of novelty, functional characteristics, the value of reuse, Level of consumption, the place of education, the dynamics of demand, the importance in the production. A group of factors contributing to the formation of the economic benefits of efficient use of material resources.
Keywords: material resources, classification, component, economic benefit, saving factor
This article presents an example of two-dimensional implementation of the optimization calculations for the air leak in the top dead point of the engine and the oil pressure in the oil line. Calculation optimization of complex repair works in the form of an algorithm of the iterative optimization process. Defined optimization criteria for this batch of units of the car. The calculations are performed for all the investigated party repair Fund of the engines. By optimizing the number of process routes decreased by one set of repairs.
Keywords: repairs on an actual technical condition, repair works, pre-diagnosis, optimization, multidimensional taxonomy, the Manhattan metric