№ 124(10), December, 2016
Public date: 30.12.2016
Archive of journal: Articles count 99, 268 kb
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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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ASC-ANALYSIS OF WINE CLASSES DUE TO THEIR PROPERTIES BASED ON DATA FROM THE UCI REPOSITORY
DescriptionCreation 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 present a solution of the problem of identifying classes of salary levels of employees depending 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 artificial intelligence of UCI repository. In this work we used the database called "Wine Data Set" from the Bank's original task of artificial intelligence from repository UCI. The most reliable in this application was the model of the INF4 based on semantic, according to A. Kharkevich, integral criteria of "Amount of knowledge". The accuracy of the model is 0,916, 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 the system of "Eidos" we used the F-criterion of van Ritbergen and fuzzy multiCLASS generalization proposed by Professor E. V. Lutsenko (L-measure)
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Description
The purposeful analysis of the existing technologies for the agricultural products transportation in railway and sea communication is carried out. Unprecedented dynamics of changes in loading and the increase of export traffic via the ports provide nigh duty on railways. Especially complicated is the organisation of freight flows to the ports at the directions with intensive mixed (freight and passenger) traffic. As a result there is an annual grow of the cars set aside from the traffic. The search of solutions was fulfilled in areas with the shortage of capacity and processing capabilities of the infrastructure of various modes of transport. The proposed solutions aimed at maximizing the use of existing transport infrastructure during the transfer of freight from railway to sea transport. The efficiency evaluation of the redistribution of freight traffic between ports of one sea basin specializing in transshipment of agricultural products is calculated. The solutions aimed at automation of the decision-making process on the optimal organization of shipment and supply of shipload lots are proposed. The results obtained in the work with the approbation on the example of organization of transportations to ports of the Azov and the Black sea basin confirm the effectiveness of the proposed solutions and the possibility of reducing the cost of transport component in the price of grain products for export
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TECHNOLOGIES AND INSTALLATION TO CLEAN PARTS OF AGRICULTURAL MACHINES AT STATEMENT OF FOR STORAGE
DescriptionAt the present time there is a problem in storage of agriculture machine-tractor park, because when operating of agricultural machinery parts thereof are covered by contamination. The most heavily becomes dirty machinery working in the toughest conditions. Pollution promotes decrease the operational reliability, accelerating of corrosion and aging, reduce the quality of maintenance service and performance technique. One of the number of important factors when setting technique for storage is the clearing of by of various types pollution, because the during storage of cleaned surfaces, components and parts are subjected still greater destruction and corrosion. Removal of various kinds of pollution is an important technological process which has a significant impact on the preservation of appliances, performance of work, the quality of the repair and maintenance of cars, culture, production and human health. The article contains a classification of contamination depending on the difficulty of their removal and density, basic information on techniques and devices for purification of units and parts of agricultural machines, as well as on substances used for this. We have reviewed bombardment of surfaces with contaminated carbon dioxide ice particles that leads to its full destruction. We have improved technology and created a universal device and the experimental plant for cleaning parts and assemblies prior to storage, which are not only inferior, but also in the majority superior to technical and economic performance of existing analogues
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THE DEVICE FOR STORING AGRICULTURAL MACHINERY IN PROTECTED FORM IN OUTDOOR AREAS
DescriptionThe carried out analysis studies the influence of various factors on the preservation of agricultural products and shows that it is largely determined by design features of machinery and technological methods of use. The efficiency of agricultural and mobile trailer machines has been forming by service and storage. Low quality of work associated with the storage of agricultural machines is conditioned by the fact that the lack of financial capacity of rural producers on acquisitions of modern equipment and materials for carrying out the preparation of for long storage, and also the construction of modern agricultural machinery storage sites. If a car can be fully or partially protected from the solar radiation, rain and snow, simply by removing it in the room, under a canopy or covered with a protective cover, by the formation of condensation on the surface of the machine units and parts these ways to protect do not work. Enhancing of preservation of agricultural machinery is possible when protecting the vehicles from atmospheric precipitation in the form of snow and rain, influence of solar radiation, and also due to the change heat exchange processes of the machine with the environment that prevents the formation of moisture condensate on its surface, ie. we have to create conditions when cooling rate at which the surface of the machine would be equal to or less the rate of cooling air. This is possible through the use of a special design, which would prevent the intense heat radiation of the machine into the environment, ie, would reflect heat rays using its surface and return them to its surface and thus fulfill the role of the heat shield
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NEW TECHNICAL SOLUTIONS FOR A SEPARATION OF THE ORGANS OF POTATO MACHINERY
DescriptionOne of the promising directions of development of agriculture of the Russian Federation is to increase the production, improve the quality and decrease the cost of potato cultivation. Annual cleaning is one of the most intense and costly in transport and technological processes. Potatoes - blending high culture and very picky about cleaning. The highest yields and income from potato production get where embedded technology to optimize energy and labor costs. The main (though not only) the special technical means used during machine harvesting potatoes, are potato harvesters. The main problem when cleaning is a problem of balancing conflicting requirements to the process and possibilities of agricultural machinery. Including increasing the purity of the tubers in the container with one hand, minimization of losses and damages of tubers on the other hand, when the performance of equipment. In this article we propose a circuit-design solution separating the working body of the potato harvester that allow for cleaning to significantly reduce the amount of traumatized potatoes in the process of separating soil and vegetable impurities, creating the preconditions for the elimination of damage to the tubers on the hard side of the working bodies of harvesting machines. Informed choice and timely use of plug-in modules (separating working bodies) in modern potato harvesting machines at work in specific climatic conditions allows them to fully match the list of regulated agronomic requirements. Thus, the creation of new science-based technical solutions for a separation of the organs of potato harvesters is an actual scientific-technical task, which makes a significant contribution to the development of the country
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RECYCLING OF TIRES AND THEIR ELEMENTS
DescriptionIn the world, recycling processes have recently become more common in order to save material and energy resources. Currently, in connection with the level of motorization, there grew a problem of recycling waste tires and their elements which is of great importance for many regions of the country. Decommissioning worn tires is a source of environmental pollution, bearing the prolonged character; they are not a subject to biological destruction and require constant increase of storage facilities. There is a continuous accumulation of used tires and we can recycle only about 20% of their amount. Worn tires represent very large-capacity products of polymer-containing waste, virtually resistant to natural degradation. Therefore, the problem of processing and secondary use, emerged from the operation of tires is of great economic and environmental significance. However, the worn tires are a source of valuable secondary raw materials: rubber, soot (essentially pure carbon), metal and synthetic cord. 90% of all waste of rubber are tires and represent a vast reserve of raw materials. In the emerging in the industry nonrenew- material resources the efficient use of secondary raw materials is of great importance. There are improved technologies for processing rubber goods, and the equipment used for it
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TECHNICAL PROVIDING FOR THE SYSTEM OF PROCESSING KUBAN SOIL
DescriptionThe system of the main handling of the soil on an agrolandscape basis in the conditions of Kuban is analyzed and in relation to it the technical supply promoting competitive production of crop production is proved. Conservation and expanded production of humus of the Kuban chernozems is possible only in case of observance of recommendations and the balanced biologically adaptive system of agriculture providing improvement of water and physical and chemical properties of the arable land in various agrolandscapes due to observance of crop rotations, the technology space, the boardless, surface and "zero" treatments with creation of a favorable phytosanitary situation, use of a crop residue remaining balance, green manure, a fertilizer, manure and composts. The application was recommended in the system and technicians of new generation with automated control systems and work quality control, the sparing tradable systems, admissible weight with use of navigation aids and GPS is proved. We have suggested a system machine for soil cultivation in the Kuban region, it radically changes technologies, reduces the nomenclative list of the used equipment, facilitates servicing and operation of machines, improves rhythm, threading of production processes and complexity of the performed works. All this promotes decrease in capital investments and a work gain in productivity. The offered technical supply of system of the main handling of the soil for conditions of the Krasnodar region is proved taking into account agrolandscapes and evidence-based system of agriculture, auxiliary the main component - resource-saving system of the tillage machines which are qualitatively carrying out agrorequirements, reducing costs and promoting the increased product competitiveness of crop production
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DETERMINATION OF TIME-CONSUMING TASKS AND ASSESSMENT OF THE EFFECTIVENESS OF PROJECT MANAGEMENT
DescriptionThe article deals with the issues of determining the complexity of the project objectives, performance evaluation of the project, as well as the question of the distribution of specialists on problems
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TO THE QUESTION OF THE MAIN PERFORMANCE CRITERIA CALCULATION FOR ELECTRIC POWER STATIC CONVERTERS
DescriptionWidespread in autonomous systems, including uninterrupted power supply systems, there are power static (electronic) convertors: rectifiers and inverters, used to match the parameters of the electric power source and the load; they also have a function of voltage stabilizers. Important question is the calculation of key performance criteria at the design stage: power losses, efficiency, reliability, weight and size (for electrical transport systems). The article discusses the methodology of the simplified calculation of the basic criteria of efficiency of inverters and rectifiers. There are schematic electrical diagrams of power rectifiers and inverters, and the basic analytical expression for a simplified calculation of the basic criteria of efficiency of the converters, including their output filters. Each year, we improve the technical characteristics of the probes using new element base, allowing reducing the level of electromagnetic interference generated by power electronic devices. We have also shown perspective directions of the development of power converter technology by using one-phase and threephase transformers with rotating magnetic field in their creation (therefore we increase reliability of operation and efficiency). A promising direction is the construction of converters and autonomous systems in a modular complex, where (in addition to increased system reliability) we simplify its operation, including service