№ 114(10), December, 2015
Public date: 30.12.2015
Archive of journal: Articles count 111, 292 kb
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STOCHASTIC DYNAMICS OF PRICES IN A MODEL OF FINANCIAL MARKET WITH DIFFERENT TYPES OF NOISE TRADERS
DescriptionIn the present study, the calculations of price dynamics are made in the model of a financial market consisting of fundamentalist and noise traders. Numerical calculations are carried out in accordance with the full Walrasian dynamic price adjustment rule. To describe fluctuations in the number of optimistic and pessimistic noise traders, a seminal stochastic Kirman’s ant model (reducible to a Markov chain) is used, as well as its modification with different scaling properties of the parameter controlling the strength of herding behavior of noise agents
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CROSSABILITY OF CRIMEAN INDIGENOUS GRAPE VARIETIES WITH FORMS OF VARIOUS ORIGIN
06.00.00 Agricultural sciences
DescriptionProgress of breeding for resistance to diseases, pests and low temperatures is provided by cross-species hybridization. Institute of Vine and Wine "Magarach" is one of the leading centers of selection of grapes in the world. The breeding program of deducing grapes at the institute is based on the study and attracting the world's gene pool, including and industrial of the Russian Federation assortment of grapes. Analysis assortment shows that the share of productive, highquality varieties with group resistance to diseases, pests and extreme environmental factors is very small. The main method of selection of grapes of a new generation who have genetically determined traits earliness, resistance to biotic and abiotic factors is crossing complex interspecific hybrids and forms of their involvement with each other and with the forms of species Vitis vinifera, belonging to different ecogeographical groups, saturating crossing between hybrid forms with complex features, the appropriate selection of reference. For vigorous offspring is most effective as a parent to use a local variety of forms of Crohn and father - interspecific cultivar Alminsky
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INTRODUCTION OF RHODIOLA ROSEA L. IN THE CENTRAL YAKUTIA
DescriptionThe flora of Yakutia is rich in medicinal plants. Many of these plants are not still studied totally. The species Rhodiola (Crassulaceae) is one of the most popular family which are widely used by the local population for therapeutic purposes. Medicals use the rhizome and roots of Rhodiola rosea as a source of medicinal raw materials. This means the removal and destruction of plants. The procurement should be carried out solely on the basis of plants grown in culture because of the rarity and few natural reserves of the species. R. rosea L. passes a full cycle of the sprouts, blossoming and bearing fruits during the introduction in the conditions of Central Yakutia. The weather conditions of the year influence on the rate of development and growth processes very strong. The experiments determination of the germination of local reproductions were negative. The sprouts grow very good. In this case, it is good possibility of intense vegetative reproduction of Rhodiola. The evaluation of stability of introduction may be attributed to the kind of group stability. The great potential and adaptive capacity of R. rosea significantly enhances the possibility of growing this species under conditions of the Central Yakutia. It is recommended to improve and elaborate of protection of natural populations and unique plant communities
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SOLAR PHOTO-ELECTRIC STATIONS: PROSPECTS, FEATURES OF WORK AND CALCULATION OF ECONOMIC EFFICIENCY
DescriptionIn the article, the general concepts and the maintenance of total, technical and economic resource of solar power are revealed. The advantages of solar power in comparison with other kinds of energy are resulted. We have shown, that currently the method of direct photoelectric transformation is one of priority directions of reception of solar electric power in the world. It is because it provides the maximal ecological cleanliness of transformation, an opportunity of reception of energy practically in any area, significant service life and small expenses for service. The structure and features of work of solar photo-electric installations were listed as well. The schemes of using photo cells and their voltage and amperes characteristics, lacks of solar photo-electric stations are resulted, basic of which are: high cost of photo-electric converters and presence of accumulators, and we have also offered recommendations on their effective use. The basic analytical expressions for definition of economic efficiency of solar photo-electric stations are resulted. The considered features of the work, the basic characteristics and the parameters of solar photo-electric stations which will allow to increase the efficiency of predesign works on development of the combined (hybrid) stations, generating electric and thermal energy, received from solar radiation
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ORGANIZATIONAL-ECONOMIC ASPECTS OF INCREASED ACTIVITY OF SMALL AGRIBUSINESSES
DescriptionThe development of the agricultural sector involves the increasing entrepreneurial activity of small agribusiness in the conditions of the market. This requires the formation of the organizationaleconomic mechanism. It acts as a system of relations arising between the state and the entities. One of the basic conditions in the solution of this problem is state support of small agribusiness at various levels. In addition, it is necessary to create a better organizational-economic mechanism of development of this type of business in the agricultural sector, which is aimed at creating and strengthening the competitive environment of agricultural producers. This article discusses the main directions of formation of the elements of the organizational-economic mechanism of development of small agribusiness in the proletarian district of Rostov region. In the area gets the development of competitive selection of farmers for the development of the agribusiness in animal husbandry. It helps to increase the livestock of farm animals in peasant (farm) area. The creation of a wholesaledistribution center on the basis of the agricultural consumer co-operative will contribute to the development of marketing infrastructure, primary processing, storage and transportation of agricultural products produced by small businesses in the area. The organizers of the marketing and logistics chain, which are wholesale distribution centres not only provides the most efficient distribution of the produced agricultural products, but also allows in General to increase the activity of the small agribusiness
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AGRI-ENERGY EFFICIENCY OF CULTIVATION OF NEW VARIETIES AND HYBRIDS OF SWEET SORGHUM
06.00.00 Agricultural sciences
DescriptionThe organization of animal feeding in the summer and procurement of fodder for the winter are of great importance. The sowings of sugar sorghum can become a reliable and stable source of fodder even in the regions with insufficient humidity. It is a unique drought tolerant crop, which can be used as green mass, hay, silage, grain, mono fodder, briquettes. The article gives the study results of green mass and absolutely dry substance, and the assessment of cultivation efficiency of such sugar sorghum varieties and hybrids grown in FSBSI ‘I.G. Kalinenko ARRIGC’ as ‘Zernogradsky yantar’, ‘Debyut’, ‘Listvenit’, ‘Zersil F1’, ‘Elisey F1’. The productivity of green mass and dry substance of the new variety ‘Listvenit’ and the hybrid ‘Elisey’ exceeded the standard variety on 7,0-5,0 t/ha and 2,30-0,74 t/ha respectively. The cultivation technologies of sweet sorghum varieties and hybrids produced the high net energy of 69,6-121,9 GJ/ha with the coefficient of energy efficiency of 3,72- 5,08. As for the energy, the cultivation technology of the sweet sorghum hybrid ‘Elisey’ can be considered as the most efficient variant, as it produced the maximum net energy of 121,9 GJ/ha with the coefficient of energy efficiency of 5,08
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TO THE QUESTION OF THE ESTIMATION OF THE SOLAR ENERGY
DescriptionIt is known, that today, the one of the promising areas to effectively address issues of energy saving is applying renewable energy sources. Despite the fact that the current solar PV stations have the main drawback associated with the high cost, the prospects of their application in autonomous systems of electrosupply are evident when they are used in combined (hybrid) systems. In such systems, other types of renewable and traditional sources of electricity, which, in addition, produce heat, might be used as well. We have disclosed the prospects of the solar industry; also, for solar energy assessment we examined analytical expressions allowing defining the energy derived from solar radiation for specific surfaces. The calculations start with obtaining statistical data obtained at meteorological stations which keeps records of the intensity of the total (direct plus diffuse) radiation on a horizontal surface, and the intensity of direct solar radiation. The article presents features of the calculation taking into account the climatic and territorial conditions, on the example of the Krasnodar region. Considered calculation procedure is the first stage of designing solar power plants. Further, we determine the total capacity of electricity consumers, as well as the quality requirements for electricity, including continuity of supply, and then we get to the construction of the block diagram of the electricity supply. In this scheme, we must provide primary and backup power sources. We select the main equipment of solar power plant (solar panels, inverters and storage batteries)
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Description
The article examines the influence of key factors in the development of modern corporations – the authorities and property for the effective realization of the expanded reproduction of generative type. The article reveals a problem of building an effective configuration of capital (capitalograms) and an adequate system of existing development strategies of a corporation. It also formulates research hypothesis
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THE INVERSE PROBLEM OF OPTIMAL ONESTEP AND MULTI-STEP FILTERING OF MEASUREMENT ERRORS IN THE VECTOR
01.00.00 Physical-mathematical sciences
DescriptionIn practice, we often encounter the problem of determining a system state based on results of various measurements. Measurements are usually accompanied by random errors; therefore, we should not talk about the definition of the system state but its estimation through stochastic processing of measurement results. In the monograph by E. A. Semenchina and M. Z. Laipanova [1] it was investigated for one-step filtering of the measurement errors of the vector of demand in balance model of Leontiev, as well as multistage optimal filtering of measurement errors of the vector of demand. In this article, we have delivered and investigated the inverse problem for the optimal one-step and multi-step filtering of the measurement errors of the vector of demand. For its solution, the authors propose the method of conditional optimization and using given and known disturbance to determine (estimate) the matrix elements for one-step filtering of measurement errors and for multi-stage filtration: for given variables and known disturbance to determine the elements of the matrix. The solution of the inverse problem is reduced to the solution of constrained optimization problems, which is easily determined using in MS Excel. The results of the research have been outlined in this article, they are of considerable interest in applied researches. The article also formulated and the proposed method of solution of inverse in a dynamic Leontiev model
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06.00.00 Agricultural sciences
DescriptionThe article substantiates a necessity to apply the method of interspecific hybridization in durum winter wheat breeding, using the present soft winter varieties for improvement of frost and drought tolerance at the beginning of germination; resistance to snow mold, fusariosis and bacteriosis of ears and grain. The article presents the results of a comparative study of different types of crossbreeding at interspecific and intraspecific hybridization due to germination, emergence, productivity. It has been shown that intraspecific hybrids ‘T. durum оз. х T. durum оз.’, interspecific hybrids ‘T. durum оз. х Т. аestivum оз’ and ‘Т. аestivum оз. х T. durum оз.’ possessed the highest germination and emergence with 71,8/75,3% for direct and 60,4/82,5% for backward, 42,8 and 35,5% and 55,4 and 64,1% respectively. In backward (triplecross) cross-breeding of F1 interspecific hybrids with durum winter wheat the grain germination was down to 37,4 and 36,6%, but the emergence was up to 64,1 and 69,7% and reached the level of intraspecific hybrids. According to the elements of ear (head) productivity (grain mass per head, number of seeds per head), interspecific double-cross hybrids of the first and the second generation significantly conceded to intraspecific hybrids, but they matched them in a number of spikelets and grain size. The triple-cross hybrids exceed the double interspecific hybrids in this respect, but they concede to double-cross and triple-cross intraspecific hybrids. We studied the principle of splitting of interspecific hybrids of the second generation ‘T. durum оз. х Т. аestivum оз.’ and ‘T. durum оз. х T. durum оз.’ (direct and backward) and the triple-cross hybrids obtained from cross-breeding of interspecific and intraspecific double-cross hybrids F1 with durum winter wheat