№ 107(3), March, 2015
Public date: 31.03.2015
Archive of journal: Articles count 114, 263 kb
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CLASSIFICATION AND ESTIMATION OF THE EFFICIENCY OF SYSTEMS FOR UNINTERRUPTED ELECTROSUPPLY
DescriptionIn the article we present generalized block diagrams of stationary and transport systems of uninterrupted electrosupply, as well as their maintenance and the basic operating modes providing uninterrupted electrosupply of crucial consumers. Classification of systems of uninterrupted electrosupply is resulted. The basic classification attributes of systems of uninterrupted electrosupply are their assignment for stationary or transport consumers of the electric power, types of used basic, reserve and emergency sources and converters of the electric power. Besides systems of uninterrupted electrosupply can be classified under circuits of connection to consumers of the electric power, their division on a sort of a current (constant, variable, high-frequency), breaks in electrosupply, to type of the switching equipment and so on. For the estimation of the efficiency of systems of uninterrupted electrosupply it is offered to use the following criteria of efficiency: Power and weight-dimension parameters, parameters of reliability, quality of the electric power and cost. Analytical expressions for calculation of parameters of the estimation of efficiency of systems of uninterrupted electrosupply are resulted. The classification of systems of uninterrupted electrosupply suggested in article and modes of their work, and also the basic criteria of an estimation of efficiency will allow raising efficiency of pre-design works on creation of systems with improved customer characteristics with use of modern element base
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FORMATION OF AN EFFECTIVE ORGANIZATIONAL-ECONOMIC MECHANISM OF MANAGEMENT IN AGRICULTURAL PRODUCTION
DescriptionThe article is devoted to the problems of creating an effective organizational-economic mechanism of management in agricultural production and the substantiation for the use of a problem-oriented approach in the management of business structures. The article is an exploratory, it has reflected the fact that it dealt with the peculiarities of agricultural production in modern conditions, and it has identified factors increase the effectiveness of entrepreneurial activity in agriculture, the necessity, in order to improve production efficiency, of the use of a problem-oriented approach in the management of business structures. The article considers specific features of agriculture, without which it is impossible to ensure the desired performance of a functioning business structures. It is proved that the solution of the problems of modern development of agricultural production, enhance the competitiveness of domestic enterprises in connection with the entry into WTO is closely linked to the identification of such features and the determination of their effect (stimulating or inhibiting) the final results of functioning of economic entities in the agricultural sector. In the article, much attention is paid to the issue of performance management entrepreneurship business entities engaged directly in agricultural production, which represents a system of organizational and technological management, providing specified volumes of production and raw materials for the processing industry, meeting the requirements of quality and sustainability and affordable prices for a wide range of consumers, as well as the definition of the specific objectives of the performance management of agricultural producers. In the article the urgency of the problem-oriented approach with identified problems identify the factors increasing the efficiency of agricultural production and to develop an optimal management decisions for specific agrifood systems
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Description
In the present article we have shown the necessity of intensification of agricultural processes in dairy producing subcomplex of Agro–Industrial Complex, based on summarized scientific researches, and the necessity to increase the economic efficiency as key factors in security of produce independence of the country. There are presented objective backgrounds of reproduction as reflection of the fact, that created goods are constantly consumed and human needs are renewed. Hence, the production should be renewed and reproduced now and again. The characteristic of production resources is given along with their share in the production process. The relation between extended reproduction and economic growth, being a criterion of economic development is shown as well. There were characterized the ways of achievement of extended reproduction, as the extensive and the intensive. At the same time, there is an accent in expediency of intensification of production based on imbedding of scientifically and technological progress. As far as the intensive way is resource saving the extensive, on contrary, is recourse expendable. Economical efficiency of this process appears in directed and systemized increase in cattle productivity, increase of production by simultaneous decrease of costs of objectified and direct labor per one unit of produced goods. The achievement of extended reproduction in dairy producing subcomplex is not achievable without reach of high level of intensification processes in production of milk. The results of the research, concerning the connection between intensification and efficiency of production, were systemized. These results show, that the increase of level of production intensification leads to the growth of cattle productivity, labor productivity, profitability, increase of production output. After the switching to intensive way of farm development, due to limited character of resources availability, the decrease of capital costs of basic assets and inventory, direct labor per one unit of increase in output has a leading role in the increase of development in dairy producing subcomplex
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Description
The article examines the teaching descriptive geometry and engineering graphics on Faculty of Civil Engineering, higher-motivation of students to obtain needed competence to adopt competently compensation-drawings. The article describes the basic methods of conducting classes on the subject "Descriptive Geometry and Engineering Graphics" for students enrolled in the specialty 08.05.01 "Construction of unique buildings and structures." For lectures and laboratory classes in the department of descriptive geometry and graphics were developed multimedia courses with animation for all studied subjects, educational presentations that reveal the specifics of the discipline into account peculiarities of the educational process of learning in the Kuban State Agricultural university. Multimedia courses using enables us to model a situation that forces students to analyze, compare the solves of the task. Students develop an algorithmic way of thinking, formed the ability to think and act optimally variability. The use of multimedia development at the Department of Descriptive Geometry and Graphics showed an increase of performance results compared to the previous years of employment without presentation. It indicates that the use of multimedia lectures and laboratory exercises improves the efficiency and quality of education, as well as gives an opportunity to a greater extent to explain the learning material for students
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Description
The constitutional regulations of all countries guarantee their citizens the right to education. In the Republic of South Ossetia during last years we observed a process of modernization of the state. In particular, the legislation on education directed on guaranteeing the right of citizens for education has been developing. The state defined the main directions of a development of education, material and personnel resources, and also the problems in this sphere were revealed. One of key problems is insufficiency of financing of an education system which doesn't allow guaranteeing the right for education at the necessary level. The availability of educational institutions for students is essential to guarantee the right to education. Modern states establish minimum standards for primary, secondary and higher education. Thus, primary education must be universal, compulsory and free, and in case of its absence, elementary education should be encouraged or intensified. In the secondary, including vocational, education guaranteed openness and accessibility for all, including through "progressive introduction of free education". In the Russian Federation, the availability of educational institutions for students was solved comprehensively, but mainly due to the municipal reform, according to which the territory is rural and urban settlements were formed taking into account walking distance from the administrative center. The author proposes to consider similar experience for South Ossetia
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Description
The most important physical properties that characterize the substance are density and saturated vapor pressure (SVP). These parameters are required for the development of new technical processes in the petroleum and chemical industries, design of pipelines, pumping and fuel equipment, etc. Existing methods for calculating of density near and on the saturation lines are imperfect, and finding of the analytic dependence of SVP of petroleum products from all defining parameters associated with great difficulties. The purpose of present work is an experimental research and development of methods for calculating the density (specific volume) near and on saturation lines, and saturated vapor pressure of gasoline straight-run fraction derived from petroleums from three fields: Mangyshlaksky, Trinity-Anastasevsky and West Siberian. The choice of objects for research is due to the necessity of creating methods for calculating of density and SVP of oils obtained from various hydrocarbon group composition petroleums. Area of state parameters in the present work by temperature (20 ÷ 320°C) and pressure (0,03 ÷ 30 MPa) provides the ability to research gasoline fractions to supercritical regions. Measurement of density and SVP of petroleum fractions performed with help of a specially created for this purpose experimental installation
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DETERMINATION OF INVESTMENT APPEAL OF INDUSTRIAL ORGANIZATIONS FOR GOOD GOVERNANCE
DescriptionRussian industry is almost completely exhausted the potential for extensive growth model. Due to this background, the increasing the importance of improving the efficiency of the companies in the industry, which by definition involves the need to increase investment activity in the industrial business becomes very important. The problem arises due to identifying the elements of investment attractiveness for further exposure to the companies in the sector and attracting investment capital. This article is devoted directly to the issues of determining factors of investment attractiveness of an industrial company. The emphasis in the article has been made on the allocation of domestic and foreign investment attractiveness, each of which is formed by a number of aspects. Also, it has identified and characterized the key elements that make up the internal and external investment attractiveness. Thus, the investment attractiveness of the internal environment of an industrial company is represented as a top-management, quality of personnel, quality of business processes, the quality of sales and quality of the financial system. Investment attractiveness of the environment can be formed by conjuncture target markets, the availability of capital, public policy, competition, barriers to entry, innovative pressure locally limited preferential treatment. The article also gives a brief description of how each of the elements mentioned above influence the integrated investment attractiveness
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BULGARIANS IN THE TERRITORY OF THE KUBAN COSSACKS IN THE LATE OF XVIII - THE EARLY OF XX CENTURIES
DescriptionThe study of the Russian-Slavic cultural, political and economic links is quite actual nowadays. At the turn of 18 – 20 centuries Russia was the only independent Slavic state that was a reason of special attention of foreign countries. The most intensive contacts in Slavic world can be found on a regional level. Both pre-revolutional and modern scientists actively explore such aspects as resettlement of Bulgarians to the Kuban, places of their compact location, main activities and further destiny of its members. There is a detailed specification of colonization of Bulagarian landowners from 18 until the beginning of 20 century in the article, based on the archive documents. Also described moments of first appearing of Bulgarians on the Russian territory and particularly in the Kuban. The article is focused on the main stages of economic familiarization and adaptation of settlers to the natural and social features of new locations. The conditions and forms of vital activities in labor, lifestyle, sociopolitical and cultural life that are typical for their social relations are marked in the article. There is also noted that main occupation of Bulgarian settlers was horticulture, where they achieved greatest successes thanks to mastery of artificial irrigation using a special mechanism for that (a big wheel with attached vessels); Hothouse economy, that allowed them to produce thermophilic crops; organization of teams, that assumed collective labor, labor relations and mutual support. To sum up, Bulgarian settlers harmoniously fitted into socio-cultural area of the Kuban region
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SYSTEMS AND SOCIOCULTURAL APPROACHES TO THE ORIGIN OF LANGUAGE
DescriptionThe article shows the distinctive features of biological and cognitive approaches to the study of the origin and evolution of language. Their advantages in understanding and explaining of the individual foundations of language faculty are considered. The study shows that these approaches do not take into account the socio-cultural and supra-individual nature of language and its close evolutionary and functional relation with communication in nature and society. The paper argues that the aim of many researchers to find specific genes of language or special cognitive linguistic ‘modules’ are achievable only in part due to systems and social nature of language, which cannot be reduced to any individual innate or acquired abilities. Nevertheless, biological and cognitive foundations should not be excluded from the system analysis of the language and have to be studied in their integrity with other sign systems (mathematic, expressive means of art, writing system, non-verbal communication, etc.). The article also discusses new insights into the theory of evolution and their applicability to the study of the origin and development of language (in particular, the problem of gradualistic/abrupt emergence of language). It is argued that the question of the "abrupt", "punctuated" evolution of language cannot be "Darwin's problem", as a number of modern scholars believe. As an alternative to the evolution of language on the basis of "macromutations" it is offered the concept of socio-cultural evolution model based on an understanding of language as a supra-individual, sociocultural sign system that develops due to the cumulative nature of culture and plasticity of individual development
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STUDY OF POLYMERIC MATERIALS PERFORMANCE IN FRICTION CONDITIONS WITH ICE AND SNOW
DescriptionThe problem of identifying of the most promising polymer materials for sledge sliding application. The comparison of materials is given: the bench tests of polyethylene, fluoroplast, steel and ultra high molecular weight polyethylene (UHMWPE) with different molecular weight and their composites are carried out. On the basis of research of polymeric samples on ice and snow friction in exploiting condition with the use of specially designed sledges was shown that GUR 4150 UHMWPE has the lowest mass volume and linear wear. Also in article the results of research of ice adhesion to different materials are presented. Adhesion research was carried out in low temperature conditions of air from -21oC up to -46oC and in cryocamera according method which was patented by Institute of oil and gas problems of SB RAS. The research showed that GUR 4150 UHMWPE has the lowest adhesion to ice. On the basis of obtained data the authors assumed that GUR 4150 is the most perspective materials for development of sledge sliding exploiting in Arctic conditions.