№ 133(9), November, 2017
Public date: 30.11.2017
Archive of journal: Articles count 94, 254 kb
-
Description
The transportation process plays an important role in the delivery of agricultural products to the consumer. On how well the fruits are preserved, their grade will depend, and, consequently, the price of them. It is known, that the annual damage from losses of agricultural products in the agro-industrial complex amounts to 8 billion rubles, according to various estimates. A large number of different factors affect the safety of fruits during transportation: temperature, humidity, smoothness of the vehicle, type of container, etc. The more factors will have a negative impact on fruit and vegetable products, the more losses will ultimately be. The appearance of dents and abrasions on the fruits gives rise to the formation of foci of rot, leading to damage to the transported products, and, as a consequence, reducing the grade. In order to reduce the losses of fruit and vegetable products in the process of transportation, the USSR and the Russian Federation have been and are working on the creation of containers and ways of transporting pomegranates. All of them, according to the authors, are able to reduce the dynamic loads that arise during the transportation process and have a negative impact on the transported products. However, due to various circumstances in commercial gardening all these developments have not been extended
-
THE METHOD OF CALCULATION OF FILTERS FOR STATIC CONVERTERS OF ELECTRIC POWER
DescriptionOne of the important issues in the design of static converters of electric power, i.e. rectifiers and inverters, is to calculate the parameters of the output and the input filters. Output filters are designed to improve the quality of output voltage of inverters, and input filters are created to reduce ripple of the input voltage of the converter that occur when commuting power semiconductor devices, and smoothing fluctuations of the current consumed from the power supply. The complexity of analytical description of the harmonic composition of the output and the input of the voltage rectifiers and inverters makes it difficult to develop some accurate methods for calculating the parameters of their filters. At the same time, considering the discreteness of the number of possible parameters of real elements of the filter, the practical value of such techniques with a high analysis accuracy of the harmonic components is negligible. In this article, we suggest the technique of the simplified calculation of output and input filters for passive LC filters rectifiers and inverters. At the same time, the practice of mathematical modeling and design of transducers has shown that the calculations of the filter parameters for rectifiers and inverters are not significantly different from each other. Therefore, the analytical expressions for calculation of the filter parameters of rectifier used ripple coefficient, and if necessary the calculation of the filters of the inverter, instead of the pulse number in the formula can be substituted with the value of the harmonic; in addition, we have also taken into account the value of the load power factor
-
ESTABLISHMENT OF THE RUSSIAN OILBANK PREMIER AS ONE OF WAYS TO INCREASE ENERGY SECURITY IN RUSSIA
DescriptionThe article deals with the energy security of Russia in conditions of sanctions and the globalization of the modern economy in the world community. It is substantiated that energy security is the main factor of political and socio-economic stability of each state. Russia is not an exception. For many years it has been the world's largest net exporter of oil and gas, mainly due to the weakness of the economic system; the main problems of the oil refining industry are considered; we have also given the definition of energy security; the energy security of Russia is analyzed in the conditions of the crisis. An estimation of the export of domestic goods is given, the reserves of the regions are considered according to the level of extraction of oil resources, the rating of the largest oil companies is determined by the level of average daily oil production. It is concluded that for a successful export, the redistribution of significant oil reserves between regions within the country will require a relatively long period, not one or two years. It was revealed that the level of domestic production is not fully capable of providing consumers with the necessary products, for which Russia implements the policy of modernization and reconstruction of the fuel and energy complex. Russia has been one of the leading oil exporters for many years, the main indicators of the oil sector have been examined, the definition of economic security and energy security has been defined. The energy security of Russia is analyzed in the conditions of the crisis, as well as the globalization of the world economy. A brief description of the energy security policy of the Russian Federation is given. An assessment is given of both the world oil sector and the Russian oil sector, based on this assessment, a conclusion has been drawn about the deteriorating conjecture of the oil industry. A correlation-regression analysis of the effect of oil prices on the quotes of the Russian ruble was conducted, and on the basis of the findings it was concluded that the Russian economy is in a sufficiently strong dependence on oil prices. The possible variant of reducing such dependence through the increase in the role of SPIMEX in the international arena and the creation of an oil benchmark in the Russian Federation were considered and described
-
ECONOMIC ASPECTS OF INCREASING EFFECTIVENESS DEVELOPMENT IN GRAIN BUSINESS
DescriptionThe article highlights high level of agricultural production and promising export potential of the Krasnodar region. The authors provide analysis of market segments of export growth in grain business, consider opportunities of increasing competitiveness by improving production of grain, import substitution, and focusing on export. It is noted, that the cost of imported food in value chain terms in our country had reached an enormous rate, and that government had realized the need of strengthening food security and transferring production of traditional produce, which are forming the basis of consumption of the local population, to the domestic market. The authors point out that we need temporary moderate state protectionism and protection of the domestic market with the aim of modernizing the economy, attracting investors in the important fields of production with high risks. The main problems and solutions that will help to further successful implementation of this strategy in the sectors of grain economy are also defined. The article shows that the Krasnodar region has the most effective rural industrial structure, the best climate in the country, enlarged crop rotation, cheap labor resources, extensive experience in agricultural business. The authors propose adopting a set of measures of reducing systemic risks and enhancing competition in grain business; to reduce lending rates to 3-5 % to revive the lost ground in livestock breeding, particularly in pig and cattle, the basis of which is the production of grain, and also improve the scheme of distribution of state support
-
Description
Production and processing of grains have formed a number of cereals-governmental sectors in the national economic system of the country, such as grain production, grain elevator industry, flour, cereals and mixed fodder production, which constitute the grain complex country. The significance and the role of the grain as a commodity in the state economy can not be overestimated. This product is totally liquid; it has a constant, steady demand at any time of the year, in any region. Ongoing measures to increase grain production and improve its implementation did not have a complex character, therefore, insignificant effect on the efficiency of the industry and the competitiveness of grain production. The shortage was covered by imports. According to the characteristics of management in agriculture, it should be especially emphasized that the lack of objective and timely information at all stages of crop production, and, as a consequence, the adoption of suboptimal management decisions, leads to the fact that labor and material resources increase substantially, the enterprise receives less profit , and sometimes incurs losses.When selecting cultivation technology for agricultural crops, an agronomist has a database of more than a hundred times-personal of alternative technologies for each crop. It is up to the decision-maker (DMP) to find specific criteria to select the most suitable (for the owners and the climatic zone) technology of cultivating for the culture. These circumstances explain the relevance of in-depth research of economic and mathematical models and methods of analysis and evaluation of the economic efficiency of technologies of cultivation agricultural crops. The article deals with the task of developing and implementing a specialized software package for the task of managing technological processes in crop production with the goal of improving the quality, efficiency and validity of management decisions
-
Description
The article presents theoretical and practical provisions for improvement of small business in agriculture: two blocks of small businesses’ features in agriculture are justified: first block is related to the sectoral specifics and its characteristic for both large and small forms of management; while second block is exclusively associated with the specific characteristics of small business; the forecast of small business development in agriculture is calculated, according to which the number of farms can decrease insignificantly; the number of cattle and cows in farms will increase, meanwhile it will decrease in private households; the number of sheep in the farms may slightly decrease, while at the same time the number of sheep in the households will increase; the number of birds in farms can increase, while it will decrease at households. This article presents the forecast of volumes and structure of small business, in accordance with which: the dynamics of households’ farming can increase both in crop and livestock production; the dynamics of production in farms will be observed, the structure of production by forms of management will remain unchanged; specific share of agricultural production by types in small farms is justified. Measures of improving the subsidizing and lending mechanism for small business and CRTs in agriculture are justified
-
MODELS OF NEURONS WITH MEMORY OF STATE FOR ORGANIZATION OF NEUROEVOLUTIONAL CALCULATIONS
DescriptionThe article discusses the model of a neuron with memory. The proposed model is formed based on the model of the dynamic neuron. The proposed solutions allow to efficiently model dynamic processes and to provide a two-level scheme for evolution of neural networks. The first level of evolution is achieved using traditional neuro-evolution models that allow you to create or to modify basic network settings. The second level allows you to track the history of the development process. The article presents a formal description of the proposed models and algorithms of functioning of the network, is the rationale for the use of the proposed models
-
06.00.00 Agricultural sciences
DescriptionIn the article there were analyzed the different approaches of Soviet and Russian authors to the assessment of soils regarding to agro-ecological factors. There was given the characteristic of natural-economic zones territorially entering the Azov-Kuban lowland by main soil-climatic indexes. There was considered the valuation of soils which determines their relative value and suitability on main factors of natural fertility or their groups, it serves as a criteria of unification of soils into agro-ecological groups. There were shown the main indexes and order of grouping of soils under unification of different soils into agro-ecological groups. There was calculated the “normative” productivity of main agricultural crops on natural-economic zones of Azov-Kuban lowland which defines the agro-productive value of soil. There were revealed the disadvantages of soil assessment method used in the course of state cadastre valuation of agricultural lands asserted by the order of the Ministry of Economic Development from 20.09.2010 № 445. There were cited the specific rates of cadastre cost (SRCC) of agricultural lands on municipal entities of Krasnodar region. There was given the assessment of obtained data regarding to natural-climatic factors of the region, there were made proposals on optimization of trends of further researches on claimed problem
-
SPECIFICS OF AGRICULTURAL PRODUCTION MANAGEMENT SYSTEM
DescriptionThe article deals with the organization of the management of development of agro-economic systems at various levels, assesses the existing approaches to the localization of the management object in relation to agroeconomic systems, points out that agriculture is most often designated as managed subsystems as a part of the national economy, agro-voluntary complexes as territorial-sectoral formations of different levels, cluster type structures, integrated agro-industrial structures and allied other types of agricultural producers, farms of different categories, agricultural production and agrarian potential of rural areas conclude that radical economic reforms have led to the destruction of the agro-industrial complex as a single entity of public administration and transformation of a multilevel system of management of agricultural production and caused the loss of controllability of the agrarian sector, it is pointed out that the restoration of manageability by agricultural production can be it is ensured by consolidating the efforts of all economic agents of agrarian relations: the state (federal, regional and municipal authorities), branch unions and associations, corporate integrated units, consumer cooperatives and economic entities of all categories (agricultural organizations, peasant (farm) households, farms population), describes a set of principles governing the process of forming the management system of agricultural production, the results are given systematization of management tasks, the essence of the management mechanism is revealed, it is proved that, due to the generality of management functions and a certain uniformity of managerial activity, the similarity of information flows ensuring the rational interrelation of subjects and management objects in the process of realizing these functions is observed, and a certain level of typicality of information flows creates objective prerequisites for the formation of a typical system of information support for the management of economic entities of specific types
-
Description
The influence of auto-displacement in a resonancetunnel diode (RTD) on the dynamic range of amplifiers on these diodes is considered in the article. The amplification at resonance frequency is considered and the influence of higher harmonics is not taken into account, since they do not create a significant voltage drop at the nonlinear resistance of the diode. It is assumed that the gain will be sufficiently large, and then the nature of the dependence of the gain factors on the degree of regeneration will be the same for amplifiers "per pass" and "reflection". This allows us to consider the problem for both types of amplifiers on the RTD. The types of amplitude characteristics , which are possible for the RTD amplifier, are considered. The dependences of the parameter determining the dynamic range of the amplifier on the position of the operating point for several values of the product of the resistance on the direct current of the supply circuit are calculated for the value of the modulus of the maximum negative conductivity of the tunnel gap RG max. For each value of RG max for given parameters, you can determine the position of the operating point, which provides the specified amplifier mode. Dependences of the value of the dynamic range are constructed with allowance for auto-displacement and in the absence of auto-displacement for two values of the degree of regeneration. Taking into account autosplacement, two possible types of amplitude characteristics and boundaries of their existence were revealed. For these two types of amplitude characteristics, expressions were obtained that determine the dynamic range of the amplifier