We examine how stem taper and the nonuniformity of bark along the trunk affect the efficiency of bundle mechanical decortication in drums.Such decortication enhances the performance of timber-preparation facilities.We demonstrate that the decortication of fast-taper longwood assortments may result in uneven barking along the trunks.Therefore, improvement of the technological process of longwood drum barking will diminish the offgrade portion of the chip and thus will result in better rates of competitiveness.Long size logs are often bent in barking drums. Further studies should take into account the resultant alternating strain in the bark, including stretching and compression. It also appears important to examine the effect of negative temperatures and bark moisture content on the resistance of the bark to the combined effect of stretching, compression, and impact shock.

Keywords: bundle barking, stem taper, barking quality, barking drum, long-cut timber barking, bark.

The article describes an interactive virtual laboratory for training of dentists using the technology of virtual and augmented reality in medical educational institutions.

Keywords: education, training , virtual reality, augmented reality system

Results of poll of students of the Don state university about a cultural complex of the Rostov region are given in article. The main cultural and leisure installations of respondents, their relation to cultural infrastructure of Rostov-on-Don and area, their main cultural interests are shown. On the basis of these data conclusions are drawn on the level of satisfaction of cultural requirements of students.

Keywords: cultural complex of the Rostov region, cultural requirements, sociocultural elements, cultural services

Presented article provides the results of experimental studies related on the centrifugal impregnation of pine wood process. The studies were carried out respecting influence of the percentage of summerwood and latewood in the impregnated samples on the speed of centrifugal impregnation (impregnant consumption per processing time), and the impregnation depth (the ratio of the volume of absorbed liquid to the total volume of the pore space of a wood sample). On the basis of these results it is shown that the percentage of latewood in a sample does not significantly affect the speed of centrifugal impregnation, while the percentage of latewood affects the impregnation depth (regression model obtained). Furthermore, it is shown that the inner space filled with the impregnant after centrifugal impregnation occurs uniformly along impregnation front trace. The conclusion follows with a list of promising directions for further research on the subject of wood impregnation process using centrifuges.

Keywords: pine wood, centrifuge, impregnation, impregnation front centrifugal method, deep impregnation, summerwood, latewood, uniformity of impregnation

The article presents data on the coefficient of performance (COP) of the existing irrigation systems, data on losses from irrigation channels and the distribution of their filtration. Examines the implications, fuss-tic at lower efficiency and as a result, filtration of water from irrigation canals-systems. A number of measures to reduce the loss of water through seepage from irrigation canals, including: maintenance, engineering and design activities.

Keywords: Filtration, irrigation system, coefficient of performance, protivofiltratcionnye activities, covering, cladding, screens, geosynthetics

Presented the results of investigation of the motion of logging trucks using systems GPS-monitoring. Is investigated change of output per shift productivity ​​calculated for considering  trains when moving at a distance of 150 to 500 km in increments of 50 km. Examined the effect of distance of transportation and standard deviation values ​​of speed on change the output per shift productivity. More than that was is studied the influence of transport distance and shift productivity values ​​on the change the cost of removal of 1 cubic meter of timber harvested.

Keywords: output per shift, logging truck, the systems GPS-monitoring, maintenance cost, removal

In this paper a modification of logic element DC LUT FPGA is proposed for the purpose of the acceleration of diagnostics. Simulation of proposed modification was performed in the system NI Multisim 10 by National Instruments Electronics Workbench Group. Evaluation of hardware costs is also given.

Keywords: logic element, DC LUT, FPGA, diagnosis, reliability

A model system was designed and test  trials of physical and mechanical characteristics of small – crystalline and granular flotation potassium chloride are studied. This model system allows to design storage and transportation  of fertilizers in bulk in railway wagons and it has the same static and vibrational load as real system. The effect of temperature and relative humidity of the air on hygroscopy of small – crystalline and granular КСl were studied. Furthermore the influence of static load, and time length  of compression process of fertilizing layer and parameters of static and vibrational load on composition of КСl granules were investigated. It was experimentally proved that the humidity increase (0,5 %) of granular КСl and the  increase of static load and time length  of compression process of product during transportation in bulk lead to increase of compaction degree and caking ability of product. Research of the influence of high static load (10-30 kg/sm2) and time length of compression process of fertilizing layer on caking ability and degree of compaction show that small – grained KCl has smaller degree of compaction and considerably higher value of caking ability in comparison with granular KCl.

Keywords: Potash fertilizers, storage and transportation, hygroscopy, caking ability, degree of compaction, commodity characteristics of fertilizers

The article highlights the conditions for effective diversification. The factors of the internal environment, affecting the efficiency of diversification. 
The methods of analysis of the market, allowing you to tailor a strategy of diversification to the changing conditions of competition in the market. 
Shows the need for structuring diversification, given the group on current issues, as well as a comprehensive solution to these problems, we have an in-depth analysis and diagnosis with the subsequent implementation on the basis of this analysis in the operation of the enterprise. 
There are four stages of diversification of copyright: in the first step to solve the problem of selecting priority areas for development within the economic entity, the second stage is the process of structuring a problem specific to the business entity; the third stage should be determined by the direction of the use of innovative resources as the main form for priority directions ongoing diversification; fourth phase to establish mechanisms for the implementation of diversification at the business entity.  

Keywords: diversification, enterprise, efficiency, factors, criteria, stages

This article discusses the problems of  retail network in Russia and the main directions of development of the domestic networks in connection with the expansion of foreign networks and Russia's WTO accession. In the harsh conditions of competition will survive only those commercial enterprises that will   practically use logistic as business philosophy and methodology, and  the main provisions of logistics management in  their business practice  

Keywords: Retail network, development of retail network, Logistizatcija retail network problems network retail, logistics strategy, logistics management

Systems of passive damping of oscillations of high-rise constructions are considered. Their merits and demerits are revealed.  The roller  system of  oscillations indemnification  of the high-rise constructions subject to seismic influence is offered.  The principle of its work is described.  Advantages are estimated.

Keywords: high-rise construction, damping of oscillations, passive systems, roller system of indemnification, vibroisolation

In the article, the problem of reliability ensuring of bulldozers working at oil and gas objects bases backfill is considered. Typical failures are revealed. Statistical data on time between failures of bulldozers’ elements are obtained. Time between failures distribution regularities of running gear elements and engine are determined. Adequacy of logarithmic normal law of distribution and Weibull’s law is proved. Directions of the received results use are offered.

Keywords: Bulldozers, reliability, time between failures, distribution law, oil and gas objects

Developed criteria for matching the oscillation frequencies of sensitive elements biaxial functionally integrated micromechanical gyroscopes-accelerometers LL-type. Review the results of modeling.

Keywords: microsystm technology, element base, model, modeling, gyroscope, accelerometer, sensor

In the present work proposes a specified description of potential functions when the free spreading  in the two-dimensional turbulent flow of planning. In contrast to previous decisions, new parameter satisfies the continuity of flow when the flow flowing  from rectangular tubes on the discharging  track  

Keywords: final line of motion, lines of equal potential, horizontal rectangular tube, diverting from the mainstream flow

Now development of the administrative principles is directed on selection of the corresponding forms of total activity of employees of the investment and construction sphere. The methodology of a point of profitability shows, how many production the organization has to realize to refund the expenses. We offer model of management of integration in construction, using the mathematico-statistical analysis and considering calculation of a point of profitability. Here factors – receptor, administrative and effector take place. In experience information of the construction enterprises of Rostov-on-Don was used. The profit after introduction of innovations grows quicker, than before their introduction since the point of profitability decreases after calculation of the organization for invested in innovations. On examples the criterion of expediency of merge of the construction organizations – the carried-out amount of works is shown. On the basis of this criterion it is possible to solve a problem of streamlining of operations in construction systems by integration of information space of organizational and technological, economic and other applied systems.

Keywords: аssessment, effective, land tenure, methods, expert, factors, hierarchy