№ 124(10), December, 2016
Public date: 30.12.2016
Archive of journal: Articles count 99, 268 kb
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METHOD OF IMPROVING AGRICULTURAL BUSINESS ACTIVITIES
DescriptionThe aim of this study is to develop a set of theoretical and methodological tools of the provisions on the formation of economic analysis and assessment of the level of risk management in agricultural business structures to support their choice of management techniques
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Description
Tomato is one of the most popular vegetables in Kuban. Every year, the area under this crop in the region occupies more than 11 thousand ha. Currently the State Register of Breeding Achievements approved for use in Krasnodar region, includes more than 90 tomato varieties and hybrids, however, the need for new, more productive varieties is not reduced. The important task of breeding is development of varieties and F1 hybrids with stable realization of the potential, with high level of yield ability, resistance to adverse environmental factors. In the southern regions of Russia for tomatoes, especially during flowering and fruit ripening, the most unfavorable abiotic environmental factors are excessive heat (air temperature 35 - 45 ° C or higher) and high solar radiation. Adverse temperature conditions often act as a deterrent in obtaining high yields, due to the flowers and fruits drop. The article presents the results of breeding activities of the last ten years (2007 - 2016) on development of new tomato varieties and F1 hybrids for different purposes As a result of studies there were developed four tomato varieties and one F1 hybrid that meet the requirements of production and are adapted to abiotic conditions of cultivation in open field in Kuban
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ASC-ANALYSIS OF THE DEPENDENCE OF PAYMENTS TO EMPLOYEES OF AIC FROM THEIR CHARACTERISTICS
DescriptionThe creation of artificial intelligence systems is one of important and perspective directions of development of modern information technology. As there are many alternatives to artificial intelligence systems, there is a need to evaluate mathematical models of these systems. In this work, we consider a solution of the problem of identifying classes of levels of pay of employees on their characteristics. To achieve this goal, it requires free access to test the source data and methodology, which will help to convert the data into the form needed for work in artificial intelligence systems. A good choice is the databases from the site: http://allexcel.ru/gotovyetablitsy-excel-besplatno. In this work, we have used the database called "The database table of employees, payments calculation". The most reliable in this application was the model of the INF4 based on semantic appropriate measure of information of A. Kharkevich with integral criteria of "Amount of knowledge". The accuracy of the model is 0.960, which is much higher than the reliability of expert evaluations, which is equal to about 70%. To assess the reliability of the models in the ACS-analysis and the system called "Eidos" we have used F-criterion of van Ritbergen and fuzzy multiclass generalization proposed by Professor E. V. Lutsenko
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EXPERIMENTAL STUDY OF NOISE AND VIBRATION OF THE BAND SAW FRAME SAWS AND WOODWORKING MACHINES
DescriptionThe article presents the results of experimental studies of band noise generation and multirip woodworking machines. The studies have shown that saw woodworking group, as well as metal, are general patterns in the formation of the spectral composition that allows to approach the development of practical recommendations to reduce sound pressure levels in the work area to the operators of sanitary norms. Of particular note is the fact that elevated levels of noise generated by the cutting tool. The effect of changes in process parameters, in particular, the depth of cut and feed to levels of noise generated by the tool. For example, increasing the depth of cut in half leads to an increase of sound pressure levels at 5.8 dB (theoretically obtained value is 6 dB), and supplying a halving of the sound pressure levels reduces by 5 dB. High enough for engineering purposes convergence of theoretical and experimental sound pressure levels and the fact that the calculated values above experimental, allows the calculation and design of the system to reduce the noise under consideration in the machine is, only in service but also in their design
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SIMULATION OF TURBULENT MHD FLOW IN A RECTANGULAR CAVITY IN A ROTATING MAGNETIC FIELD
01.00.00 Physical-mathematical sciences
DescriptionThe article deals with numerical solutions of MHD equations describing turbulent flow of a conducting fluid in a rectangular cavity in the rotating magnetic field at large values of the magnetic Taylor number, and Reynolds number. It is known that there is a mechanism of turbulent mixing in natural systems, leading to an increase in the viscosity of the continuous medium. In this regard, we suggest methods of regularization of the Navier-Stokes equations, similar to the natural mechanisms of mixing. The models based on the properties of currents of the turbulent environment proposed. A modification of the continuity equation taking into account the final magnitude of pressure fluctuations was considered. It is shown that due to pressure fluctuation the incompressibility condition can be violated even for flows with low Mach numbers. Modification of continuity in the system of NavierStokes equations by the introduction of turbulent viscosity allows the regularization of the NavierStokes equations to solve the problems with rapidly changing dynamic parameters, for example, in the case of a conducting fluid flow in a magnetic field rotating with a high frequency. It was shown that the modification of the continuity equation taking into account turbulent fluctuations leads to a system of nonlinear equations of parabolic type. A numerical model of turbulent MHD flow in a rectangular cavity with rapid change in flow parameters was proposed. In numerical calculations revealed that under the influence of a rotating magnetic field in a conducting fluid there are forces occur, causing unsteady vortex flow, which is consistent with experimental data. We have discovered a type of large scale instability of the turbulent flow, connecting with the secondary flow in a form of vortices
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Description
The article presents the results of studies of vitality and of the correlation variability of morphological traits cenopopulations Lilium pensylvanicum Ker.- Gawl. on the natural territory of the Yakutsk Botanical Garden and in cultura. The study shows variability of their parts (variability) and the estimation coenopopulations vitality (vitality)
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06.00.00 Agricultural sciences
DescriptionNumerous studies have found a different quality of the buds along the length of the fruit arms, which expressed various degrees establishing embryonic inflorescences in the central buds. It is revealed that many of the grapes have more fruit-bearing eyes formed on average (4-6 knots) and upper (7 to 10 knots) levels of fruit escape, compared to the lower (1-3 nodes) layer. In connection with the different quality of the buds along the length of fruit vines should be used and different ways of cutting them. It is necessary to consider the biological characteristics of varieties, ways of doing and shaping the bushes, the weather conditions of the area during the growing season and relative calm. To receive annually a stable high yield of grapes, we must first set the optimal length of pruning fruit shoots and optimal load on the Bush healthy eyes. This requires for each class on the eve of trimming bushes to carry out the analysis of the wintering holes along the length of the fruit shoots and to identify the embryonic fruitfulness of Central buds, i.e. to carry out the prediction of grape yield next year. The article presents data on the formation of the embryonic fruitfulness of Central buds of wintering buds at the Taman group of grapes – Arcadia, Viorica, Hibernal, Cabernet Sauvignon, Merlot, Moldova, Pinot white, Riesling, Saperavi, Traminer pink, Tsimlyansky black, Chardonnay. Found higher rates of embryonic fruitfulness of Central buds buds in the studied grape varieties - Chardonnay, Riesling, Viorica, Hibernal, Merlot, Moldova, where the coefficients of fruiting ranged from 1.40 m from Riesling to 1.69 from Merlot; factor productivity of 1.58 from the Chardonnay to 1.77 from Merlo. The high percentage of fruitful buds from 80,8 from Cabernet Sauvignon to 95.6 in the cultivars Merlot and Chardonnay. A higher percentage of eyes with 2 embryonic buds in the cultivars Merlot and Viorica who have this indicator amounted to, respectively: 75,6 and 70.6%. Forecasting a crop of grapes next year to trim the bushes on the proposed method will provide a full crop of grapes
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DISTRIBUTION AND SPECIES COMPOSITION OF PECTORIS AND RHODOCOCCUS
DescriptionThere are numerous reports about the possibility of sensitization to tuberculin animals when infected with pectoris and Rhodococcus and it is considered to be expedient to create one monoallergenov to differentiate allergic reactions. In this context, the spread of pectoris and Rhodococcus in nature, the general physico-chemical and biological properties of mycobacteria, increasingly emerging reports of a possible sensitization of the microorganism, require a detailed study of them in order to determine the specificity of allergy
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Description
The creation of artificial intelligence systems is one of important and perspective directions of development of modern information technology. As there are many alternatives to artificial intelligence systems, there is a need to evaluate mathematical models of these systems. In this article, we consider a solution of the problem of identifying classes of levels of pay to employees on their characteristics. To achieve this goal it requires free access to test the source data and methodology, which will help to convert the data into the form needed for work in artificial intelligence systems. A good choice is a database of test problems for systems of UCI artificial intelligence repository. In this work we have used data base on teaching effectiveness for three regular semesters and two summer semesters of 151 teaching assistant (TA) assignments at the statistics Department of the University of Wisconsin-Madison. The most reliable in this application was the model of the INF4. The accuracy of the model in accordance with Lmeasure made up 0,809, which is much higher than the reliability of expert evaluations, which is equal to about 70%. To assess the reliability of the models in the ASC-analysis and in the system of "Eidos" we use F-criterion of van Ritbergen and its fuzzy multiclass generalization proposed by Professor E. V. Lutsenko
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Description
A methodology for a multilevel system approach to integrated optimization of processes of harvest, transportation and cleaning of the grain during the harvest by the method of «Neveyka» has been developed. The main method of research - is a queuing theory of all components of the yield except straw. The System consists of 6 interconnected subsystems with their inputs and outputs, and its own optimality criteria. On the first level of optimization, the most efficient way of wheat harvest «Neveyka» has been proved. On the second level - the total duration of the harvest with allowance for 4-5 cultivated wheat sorts, each of which is harvested within 5 calendar days, was optimized. The third level proves the requirement of combine harvesters and transport vehicle. On the fourth level - the combinations of harvesting and transport units are optimized on the criterion of the minimum amount of the loss on the mutual expectations of harvesters and vehicles. The fifth optimization level proves the capacity of the reception station of the grain storage, where the main criterion for optimality is the least amount of losses on the mutual waiting time of the transportation vehicles, and the additional criterion is the minimum waiting time of vehicles in the queue. On the sixth and the final stage the specific annual economic effect (rub/ha or rub/t) from the implementation of the proposed technology is determined. It is established, that during the grain harvesting, transporting and processing of heap there are elementary or Poisson probability flows of requirements for service. The Representation of harvesting - transport link in the form of closed queuing system of independent harvesting unit. An approach to the justification of failure-free operation of a station for cleaning grain heap and storage of grain and chaff is presented