№ 112(8), October, 2015
Public date: 30.10.2015
Archive of journal: Articles count 151, 381 kb
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SIMPLEX METHOD WITH ARTIFICIAL BASIS
DescriptionThe presented article is devoted to solving problems using the simplex method with artificial basis. Simplex method with artificial basis is used when quite difficult to find initial support program of the initial problem of linear programming, written in canonical form. The presented method is used in the presence of solutions to the system of restrictions and conditions, equations, inequalities and conditions, as well as a transformation table method. The calculation of the system is carried out by introducing artificial variables Ri with the sign of which depends on the type of the optimum, to remove from the basis of these variables are introduced in the last objective function with negative coefficients M that are "mulct" for putting artificial variables. Simplex table, which is made in the process of decision, using the method of artificial basis, called extended. It differs from the conventional in that it comprises two lines of the objective function. In minimization problems - with positive M. Hence, from the original one we have already obtained the new M -problem. If in the optimal solution M-problem has no artificial variables, this decision will be the optimal solution of the original problem. But, if in the optimal solution M-tasks at least one dummy variable is different from zero, the system of constraints of this problem and have inconsistent problem is unsolvable
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Description
The article deals with questions of organizational forms of additional training of future engineers that is based on synergetic approach. The motivation issues to training as a result of social consequences of reforming of engineering education are considered. The interaction of subjects of educational space and specific questions of training and education based on self-organization of students are analyzed
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SYNTHESIS OF SUBSTITUTED PYRIDINE- 3-SULFONYL ISOCYANATES AND PYRIDINE- 3-SULFONYL UREAS
DescriptionAcylation of amides substituted with pyridine-3- sulfonic acids oxalil-chlorides and phosgene was studied. New pyridil-3-sulfonil isocyanates were synthesized. The conditions for this synthesis were optimized by taking into account the detailed understanding of this acylation. The synthesized pyridine-3-sulfonyl isozyanates were converted to pyridine-3-sulfonyl ureas. Biological activity of the new compounds was studied and the substances with high herbicidal effect were found
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Description
The purpose of research – the development of models and methods of multiparametrical diagnostic the research activities of scientific and pedagogical collectives of educational institutions. The problematics of research is improving the quality and productivity (the efficiency) of research activities in educational institutions. The problem of research is the question of how to objectively and comprehensively (in a complex) diagnose the research activities of scientific and pedagogical collectives? The urgency of solving specified problem is caused by the need to ensuring a close relationship between research, methodological and educational activities in educational institutions. We have also to consider the increasing role of clusters in the Russian economy, cooperation and integration levels (steps) a system of continuous education, etc. The authors identified the parameters reflecting significance of research activities of the scientific and the pedagogical collectives for the scientific and educational community (social megaenvironmental). When allocating indicators the authors took into account that science - the social and cultural phenomenon and the social institution, and the most important aspect of the significance of the research activity - in the innovative development of various spheres of human activity. The applied methods of research: mathematical modeling; methods of the theory of graphs, sets and relations; methods of "artificial intelligence" and the multi-parameter analysis of systems; methods of quality control (theory of latent variables). Methodological bases of research: systemic, cultural, competence, metasystem, sociological, qualimetric and synergetic approaches
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MODERN PROBLEMS OF ANIMAL HUSBANDRY OF THE KRASNODAR REGION: STATE AND SOLUTIONS
DescriptionThe Krasnodar region is a major producer and supplier of agricultural products. Livestock development in the Krasnodar region has been supported by the following factors: favorable climate, the intensive development of crop production, the need of the population in livestock production and others. Recently, however, there is a decline in livestock production, which is due to the influence of negative factors. Industry analysis showed the problems that hinder the development: high costs for the purchase of feed for livestock and poultry, low purchase price of products, pedigree cattle deficit, lack of foreign investment, low level of modernization of production. The development of the livestock industry of Krasnodar region must be associated with the use of optimal feed rations of cows, implementation of new methods of genetics and selection, implementation of strict accounting and control of livestock, improvement of livestock veterinary support. This will increase the milk production and improve the efficiency of the industry. The article provides the optimal parameters of the diet of cows, calculated by the authors and based on the use of methods of optimization and simulation. It is based on economic and mathematical model developed by the staff of the Department of Economic Cybernetics of Kuban State Agrarian University
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ELECTRO PHYSICAL METHODS AND DEVICES OF ELECTRO TECHNOLOGICAL FARM COMPLEX IN THE KUBAN REGION
DescriptionThe absence of theoretical bases for interaction of the magnetic field and cellular mechanism, the lack of an effective way to determining the results of this action has led to the creation of a large number of machines and devices of electromagnetic influence on biological objects of vegetable and animal origin. Many of them are contain special generators and inductors developed for a specific type of object. By means of these constructions, used in electro technological processes at agricultural companies of the Kuban region, we increase productivity of different crops, increase productivity of animals and poultry, change the physical and chemical properties of liquids and solutions, conducted in boiler water preparation. A distinctive feature of the electromagnetic field processing of objects of biological origin is sufficiently high efficiency of outcomes at insignificant energy costs. All this foreshadows further improve the long-term development and research in this area. By analyzing the existing devices, it can be concluded, that all of presently available designs for electromagnetic treatment are classified by a common attribute - a method for creating a magnetic field. The lack of reliable, logically complete theory of influence of electromagnetic influence on biological systems agricultural purpose and the availability of practical recommendations when to use inductors working on constant, and when the AC has led to the fact that to obtain the necessary effect, share the same devices have become connected to various sources of supply
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06.00.00 Agricultural sciences
DescriptionThe article presents the results of the study on the magnesium mode of leached chernozem of Western Ciscaucasia at three rotation of grain-grass-tilled crop rotation. Magnesium in the soil is represented mainly by non-exchangeable form, the number of which is estimated at 90,18 and 91,29 % of gross reserves. Exchange forms of magnesium are 8,68 and 7,71 % respectively in arable and the subsurface layer. The share of water-soluble and organic forms account for less than 1 % - of 0.62 and 0.68 and 0.46 and 0.38% respectively. For three rotation 11-full rotation of gross stocks of magnesium in the soil in which crops were grown without fertilizers has decreased by 0.02 % (200 mg/kg), with fertilizers of 0.03 and 0.02 % (300 and 200 mg/kg). Intense magnesium has been leached from the topsoil. There was a change of the soil content of the forms of magnesium. In the rotation without fertilizer, the share of non-exchangeable magnesium in the General Fund item increased from baseline by 0.27 % in arable and 0.11% of the subsurface layer of soil that the absolute content decreased. The amount of water-soluble, exchangeable and organic magnesium of the soil decreased. Reducing the amount of water-soluble (0.05 and 0.06 %) and metabolic (0.18 and 0.02 %) of magnesium was due to its consumption of the plants. The proportion of magnesium organic part of the soil is reduced as a result of steadily declining yields, and, therefore, the amount of organic residues. In crop rotation, use of mineral fertilizers we have observed different behavior of magnesium compounds in the soil. The number of non-exchangeable magnesium decreased from baseline by 0.13 % in arable and 0,58 % of the subsurface layer of soil. The content of the exchange of magnesium increased respectively 0.43 and 0.41 %, water soluble - 0.13 and 0.10 %, and the organic part of the soil - 0.02 and 0.02 %
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06.00.00 Agricultural sciences
DescriptionThe article presents results of studying the total content and the forms of Nickel in the Western Caucasus leached Chernozem at three rotations of 11-fild grain-grass-arable crop rotation. The Nickel content in the soil is close to its Clark (40 mg/kg) and significantly lower than UEC (80 mg/kg). Scientifically based system for fertilizing crop rotation does not lead to the accumulation of Nickel in the soil, but creates the conditions for increasing its mobility. In the future, we may experience the need of the inclusion of Nickel into the system of fertilization of crops grown on leached Chernozem. The Nickel content in the leached Chernozem before development of crop rotation was generally close to Clark soils of the world (40 mg/kg) and significantly lower than UEC (80 mg/kg), which favors the production of high quality produce. After three rotations of the crop rotation without using fertilizers, the total content of Nickel and acid-insoluble form in the soil decreased slightly, but the number of the element extracted with both buffer and acid extractor, increased insignificantly. The decrease of the total content of Nickel and its reserve (acid-insoluble) fund in the soil we explain with the annual exclusion of the element with harvests crops from the fields, and the trend of increasing mobile and acid-soluble - mineralization of humus followed by acidification of the soil. Systematic mineral fertilization on field crop rotation was slightly up for the Nickel fund of the soil, but did not ensure the recovery of the initial level. At the same time, at fertilize crop rotation we observed a clear trend of increasing the number of rolling and acid-soluble Nickel. If we consider that the value of the MPC for moving Nickel is equal to 6 mg/kg, these changes may not have any negative environmental impacts, but rather will encourage the use of this ultra-microelement by plants
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Description
The article describes the process of creation of an adaptive control system with a reference model to stabilize the temperature of drying agent. It is shown that the closed systems work with the operated models is quite satisfactory and therefore can be implemented in production. The increase of the gain of the controller allows reducing the duration of the transition process by one third, almost without changing the dynamic cast
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Description
This article is devoted to evaluation and analysis of basic trends, that revealing modern situation and current level of the development of social sphere in rural areas in the Krasnodar region. We have carried out a theoretical view to current problems in gasification, water supply, and development infrastructure objects in rural areas of the region. The authors have considered main attention is a social standards when developing targeted programs for the social development of rural areas. The article provides a specific list of normative values still indicators as the presence of a central gas supply, the central and the local water supply (hot and cold), the length of the street and objects known telephone. We have explained the mechanism of government regulations aimed at social infrastructure in rural areas of the Krasnodar region and the organization work of municipal institutions to protect and maintenance local roads. Based on the above authors’ suggestions, it is planned to achieve more definable and justifiable opinion in the implementation of municipal regulation social development rural areas designed on the basis targeted programs in the subject area. Actual and significant to readers are measures of gap consumer budget and the level of monetary income between urban and rural areas presented in the article