This article analyzes the different drivers work with database management systems, namely: MySQL, PgSQL, SqLite; - When a large amount of data in a single table. For a comparative analysis table used in the amount of 100,000 records. Identified positive and negative aspects of database drivers compared with each other, and on the basis of the data obtained on their productivity.

Keywords: database, primary key, foreign key, relational database model, database management system, php, laravel, mysql, pgsql, sqlite

Graf-lattice has vertices at points with non-negative integer coordinates. From each vertex has two arcs: horizontal and vertical neighboring vertices (right and top). The transition probability for each of the arcs is equal to ½. Consider the problem of random walks on the vertices of the graph, without limitation on the achievable and with two types of limitations on achievable - mixed and magnetic. There is some combinatorial identities containing binomial coefficients from different layers of Pascal's triangle.

Keywords: directed graph, random walks, the probability of transition, achievable tops, Pascal's triangle, combinatorial identity

The article presents a method for searching for new technical solutions. The method is based on a functional-technological analysis of a system, including pointing out its separate elements and studying the interaction between them. The efficiency of the presented method is shown on an example of improvement of an increment borer construction. Application of a functional-technological analysis allows bringing technics development to a new level.

Keywords: functional-technological analysis, increment borer, patent, tree age, development matrix

In the framework of the given article shall be considered a negative impact on microorganisms of ions of zinc, copper and Nickel concentrations in the incoming wastewater to the wastewater treatment facilities of the cities of the Lower Volga region is unacceptably high, which inevitably reduces the quality of the purified water at the indicated metals exceeding the output after biological treatment is more than 30 times). Further, in the proposed article, we describe the results of studies aimed at disposal and treatment of waste activated sludge. The first attempt to use the resulting after biological purification of waste as a secondary raw material for the adsorption material, which retrieves the designated heavy metal ions from wastewaters prior to biological treatment, which allows further the activated sludge fully interact with other ions without losing their functions. As a result, after the biological cycle treated water at the indicated metals, meets the relevant standards.

Keywords: urban wastewater, biological treatment, heavy metal ions, sorption, activated sludge, adsorbent, filter segment

The article summarizes the purification schemes of roads from snow and used in this machine. Depending on the various possible ways and means of snow removal. In the majority of methods used machines with blade. The analysis of dumps of snow plows and the tendencies of development of the working bodies. Promising to modernize dumps under the conditions necessary snow removal from roads and sidewalks, stopping pockets that are height above the roads. The decision in this case take into account the general trends of development of designs dumps. The most important of which is to increase the mobility of the blade and its division into elements. The use of hydraulic drive allows to simplify the structure of the working body of a snowplow. The effect of the implementation of research results is determined by reducing the number of passes and the number of snow plows used machinery

Keywords: snow-removal work, construction of dumps, upgrading the blade, snowblower, snow removal from roads, snow removal scheme

In recent years, a greater interest in steganography is growing as an effective method of protection of still images, allowing you to keep the information confidential. In this paper we assessed robustness to hide information in the frequency domain of still images. Using qualitative and quantitative characteristics determines the optimal values for the Corvi method.

Keywords: information security, steganography, wavelet transform, data hiding, multiresolution analysis, the watermark

Distortion assessment of a wavelet-based watermarking method for low frequency subband

Keywords: information security, steganography, wavelet transform, data hiding, multiresolution analysis, the watermark, PSNR

The paper provides information on the influence of thermodynamic prehistory (conditions for obtaining) and the processes associated with time "aging" of the samples in the dielectric properties of the alkaline-earth elements modified lead titanate ceramics. The data shows a dielectric stability of solid solutions (SS) with a high content of alkaline-earth elements (almost independently of the Curie temperature of sintering temperature). This is supported by the fact of reproduction the character of dielectric spectra in SS (α1≥0.22) unlike changed profile curves ε / ε0 (T) |f SS (α1 = 0.04). The splitting of the maxima ε / ε0 (T) |f, obtained on the same samples after 7 months (April 2015) after the initial measurements (September 2014) is the result of degradation of solid solutions close to PbTiO3, probably due to begin the process of self-destruction ceramics.

Keywords: ferroelectric ceramics, lead titanate, alkaline-earth elements, thermodynamic prehistory, dielectric properties, the effects of degradation

In this paper we propose mathematical model of salient-pole synchronous generator of mini-CHP. The model is based on a full Park-Gorev differential equation. The saturation of the machine is taken by using the method of partial magnetic characteristics. This method allows most accurate evaluation of the change of parameters of an equivalent circuit of the generator in the absence of information about the magnetic properties of the machine. The model is Implemented in Simulink. Application of the model is possible when calculating the steady-state and transients in distribution electrical net wich contains salient pole synchronous generators.

Keywords: salient-pole synchronous generator, mathematical model, Park-Gorev differential equation, magnetic characteristics, transients

The role of venture business in a sustainable development of innovative system is considered. The conclusion is drawn on discrepancy of tendencies of development of the venture industry and its contribution to growth of investment activity and efficiency of economic processes. The role of the state in development of venture business, including at the regional level is analysed. The offers directed on the solution of the problematic issues arising in the course of creation of effective models of venture business in sectors of industrial technologies and biotechnologies are formulated.

Keywords: venture funds, venture business; venture investments, innovations, state support of investments, state support of innovations, business simulation, diversification of risks

In the article, we prove the efficiency and versatility of the method of the cross structures of the building mounting by bolting junction of angles rigidly fixed to the vertical and horizontal walls of the rods. The advantage is the ability to apply this type of mounting in dynamically loaded constructions.

Keywords: Node joints, cross design, spatial frames of buildings and structures, tubular profiles of rectangular, concrete pipe elements

The article highlights main problems of agricultural development of KBR and basic measures of their solution. The necessity of state support of agriculture as a natural condition for the functioning of this industry is also justified.

Keywords: agriculture, government support, endogenous and exogenous factors, innovation development, technology

In this work we continue the study of ferroelectric compositions of different composition – basics of functional materials piezo technical destination. Considered are solid solutions (TR) binary system (1-x) PbZrO3 – x PbTiO3 (PZT), up to the present time remaining as base of almost all commercially available functional materials. Studied the impact of technological regimes on the properties of solid solutions with 0.135 ≤ x ≤ 0.145, 0.16 ≤ x ≤ 0.18, 0.37 ≤ x ≤ 0.58, 0.75 ≤ x ≤ 0.77, 0.795 ≤ x ≤ 0.805, the research concentration step Δx = 0.0025. The sintering temperature was varied from 1200 °C to 1240 °C, the duration of the extracts 2 and 3 hours. It is established that the structural parameters remain almost constant under variations of conditions in process their production in all ranges (rhombohedral, tetragonal and morphotropic) of the concentrations, and the change of relative dielectric permittivity of unpolarized samples is not more than (10÷12) %. It was shown that the study of solid solutions of multicomponent systems on the basis of lead zirconate titanate is possible with the minimal concentration of the step ∆x = 0.25 mol.%. Application of the considered techniques in the fabrication of functional materials for various purposes provides high reproducibility of their parameters. Obtained results can be useful for development of new ferro-piezoelectric materials on the basis of other complex oxides.

Keywords: solid solution, lead zirconate titanate, technology, crystal structure, dielectric permittivity

The laboratory studies the dependence of breakdown voltage of the spark plug gap on the polarity of the high voltage generated ignition system, air density and the size of the spark plug gap. The studies were performed using the tester spark under pressure. With a resistive voltage sensor made visualization, transformation and analysis of information on the magnitude of the breakdown voltage. Produced processing waveforms shown that flashover occurs regardless of the magnitude of the gap and is determined by the rate of rise of the secondary voltage of the external shape of the electrode and insulator spark plug. To reduce the breakdown voltage should be selected polarity when the cathode is the breakdown of the central electrode of the spark plug. Reversal may allow push surface breakdown in the zone of higher pressure in the chamber of the device, albeit with an increase in the breakdown voltage of the spark gap.

Keywords: ignition system, spark, spark ignition, ignition coil, motor, electrical equipment, ignition sparkplugs, breakdown voltage

The investigation and analysis of noise characteristics of the traffic flow via a directional microphone. The principle of operation of directional microphones and test procedures. Full-scale research made microphone-controlled lane highway. When approaching the vehicle to the maximum level of the microphone signal is necessary at the time of finding the vehicle in front of a microphone. Investigations at the location detection hole up from the road surface to the left (toward the oncoming lane controlled by car) and right (after moving band controlled by car). Location detecting holes toward the oncoming lane controlled by car is the best, as it allows to ensure minimum impact on the accuracy of counting cars traveling on the adjacent oncoming lane.

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

Considered Thermal calculation of light frame structures , shows the effect of air filtration in the temperature distribution on the inner surface of the enclosure .

Keywords: Breathable thermal Field & light building envelope highly porous heaters humidity materials

The results received at research of influence electron beam treatment processings on tool life of a tungstenless hard alloy metal on the basis of TiC with a binding material an alloy Ni-Cr-Al and percentage of the components "basis-binding" 50 – 50% about are presented in the conditions of metal cutting. Influence electron beam treatment of a blanket of samples of the cutting tool insert on technological components of force of cutting when turning cut metal is experimentally revealed.

Keywords: Surface coating, hard alloy metal, structural and phase modification, electron beam treatment, tool life, metal cutting, wear, technological components cutting force

The mathematical models used as an instrument of management by an enterprise are examined in the article. A review is conducted of mathematical models, investigating influence of different factors on the level of production with the use of productive functions. The models of business processes are examined. Advantages and lacks of the indicated models are analysed. Supposition is done that by the actual and effective instrument of management an imitation design that is confirmed by the examples of already existent system-dynamic models of home and foreign researchers can become a modern enterprise. On the basis of analysis of existent theoretical models the applied possibilities of the use of design are demonstrated taking into account the difficult and dynamic structure of co-operation of productive components.

Keywords: modeling, mathematical model, enterprise management, enterprise management tool, efficiency, simulation, economic system

In article the concept "enterprise risk" is considered. The flowchart of a complex assessment of size of risks is submitted, the main qualitative and quantitative methods of risk analysis with definition of their merits and demerits are systematized. Ways of minimization of size of risks are considered.

Keywords: business, risk, enterprise risk, technique, methodology

The article discusses the Genesis of the categories of "risk" and "business risk". The role and importance of entrepreneurial risk in the Russian economy.

Keywords: entrepreneurship, risk, business risk, socio-economic developm

In article the essence of business activity as economic form of realization of economic activity is specified. The role and value of an indicator of profitability in business activity is revealed.

Keywords: business, businessman, profitability, efficiency, productivity

The factors having impact on profitability of enterprise structures are presented in article. The directions of increase of competitiveness of enterprise structures are presented

Keywords: business, businessman, profitability, efficiency, productivity, enterprise structures

In article the concept "enterprise risk" is considered. The flowchart of a complex assessment of size of risks is submitted, the main qualitative and quantitative methods of risk analysis with definition of their merits and demerits are systematized. Ways of minimization of size of risks are considered.

Keywords: business, risk, enterprise risk, technique, methodology.

The article deals with the question about the prospects of the use of modern equipment in order to develop and explore new methods of monitoring and diagnosing the health of the athlete. Particular attention is given to the experimental part of its implementation, and testing. During the software was developed, by which obtained data on the physical condition of an athlete in real time, as well as some physiological indicators.

Keywords: diagnosis, monitoring, detection methods, the experiment, a potential athlete, sports, health

This paper examines the factors influencing the accumulation of energy in photosynthesis. Having studied, which can be used to maneuver them and by them to achieve even greater impact absorption and binding the vast amount of solar radiant energy biomass

Keywords: The radiant energy of the sun, Photosynthesis, Biomass, The quantum of light, Speed intensity