Creation of hydraulic fracturing in the physical structure
of the reservoir rock is one important way to improve the
productivity of oil and gas wells. These artificial
channels increase ability of the reservoir rock for
conducting hydrocarbons to the wellbore. In this study a
new approach has been proposed for optimization of
fracture half length in hydraulic fracturing operation.
Also, this new method that is a combination of various
fracturing geometry models has been proposed for
modeling the hydraulic fracturing geometry. We have
shown that there is a reasonable agreement between the
result of pseudo 3D fracture geometry model and the
predicted results from the proposed approach
Adventive weeds control using classical approach of biological protection against adventive species is not always satisfactory. A new method of the ragweed inhibition is developed that is based on shifting of the natural phenological stage of the phytophage growth. It makes possible to produce a large group of ragweed noctuidae under laboratory conditions on an artificial nutrient medium and to inundate weed infested areas with them by the time of the invader emergence
In this article, there is a numerical method of solving
the problem of self-organization of the labor
resources. The problem deals with finding
probabilities of hiring and the layoffs of specialists
from the sectors of the labor market. A mathematical
model of labor resources dynamics is used to solve
this problem. The initial problem is incorrect,
because number of equations of the descriptive
system is less than number of unknown variables. A
special algorithm is designed for guaranteed finding
the normal solution in finite number of iterations.
The algorithm is separated into two key stages.
Initially, unconditional normal solution of the
problem is found by applying the modified method of
Gauss for underdetermined systems. Later, this
solution is projected in the subspace of permissible
values. After that, the normal solution of the problem
with consideration of non-negativity of the desired
values is being found by using the gradient projection
method. The proposed algorithm has been
successfully used to develop application in
programming environment C++. This application is
focused on solving of the problem of selforganization
of the labor resources. Comparative
analysis of speed of the application and add-ins MS
Excel "Solver" showed that the same problem is
solved much faster in the application designed by the
author than in a table processor MS Excel when
using the add-in "Solver". This demonstrates the high
efficiency of the proposed method
The article considers illustrative images of plants on the postage stamps as a resource of information of agronomy history. We have shown the technology of education process. The first is the creation of the images base; the second are analysis, comparison, interpretation and search of new information. The method of sketches as the basis of the iconography of plants images was presented in this work. Analysis of the images allowed identifying several thematic blocks. Agriculture, growing in the country, the history of the plants spread, the technology of processing, product export and promotion of agronomic knowledge through agricultural exhibitions. Object of the analysis is a postage stamp. Stamps reflect the whole life of people, their history and modernity, environment, agriculture, science, culture and art. A stamp is a kind of "business card", it is a witness of the era. The main idea of the base images is receiving new knowledge about an object by collecting images, visual analysis, searching for information and studying material; in fact, it is a new approach to obtaining new knowledge, motivated and exciting approach to receive scientific information. Created database of images on the history of agronomy on the basis of stamps allows to use them actively in the learning process, and may be used as the individual topics for researches
he article discusses postcards with images related to agro-botanic illustration, the possibility of their use as an information resource in the process of the study course on the history of agriculture. We have given the extensive understanding of agro-botanic illustrations, reviewed the goals and objectives of this type of image. History of agriculture in postcards considered on three types of images: art (reproduction and original) and documentary (photo). For each type of images we have illustrative examples with brief comments. The review is presented with a combined collection covering different countries of the world. The article contains examples of postcards with brief comments. It presents an overview of the collection of postcards from different countries, and an analysis of the examples from the series named "Giant vegetables at the farm" and "Apple family". Thus, the images presented on postcards allow us to obtain the following information: the orientation of the agricultural sector areas (main activities: crop production, livestock, horticulture, viticulture, vegetable growing, etc.); Botanical characteristics of crops (agro-botanic illustration; illustration of certain types of technologies of cultivation of crops (cleaning, plant care, plowing, irrigation); documentary image separate record harvests; historical and cultural traditions associated with the agricultural sector, or in separate areas; the promotion of new crops, varieties, and hybrids of agricultural plants and flower crops; information about crops grown in the region, state, specific areas; paintings covering the agricultural labor of a particular country; promotion of local flora; develops observation; teaches us to think and analyze the information
Economic efficiency of raw material resources use in the subsector of dairy cattle breeding of livestock branch while cultivating of young growth in agricultural production in Krasnodar region is the most priority activity of economic entity. In the conditions of economic crisis the question of the cost and qualitative components connected with purchase and domestic manufacturing of material and raw resources to use while cultivating of young growth of cattle in the dairy subsector of cattle breeding is especially actual. This article brings up some issues related to the economic efficiency of the nutritive base for young cattle growing, determination of food structure and its proportion in the total expenses at the purchase of forage for cattle. The research has been carried out on the base of a particular agricultural organization and a set of economic entities situated in the central zone of the Krasnodar region. Some ways of forage supply in the organization under research are considered in this article in the framework of the Government program on promotion of import substitution in agriculture in the 2014-2015. On the basis of the conducted studies the priorities for improving economic efficiency in the use of food supply as one of material resources of the economic entity are identified as the material resources of economical entity
The article presents a computer program, which define automobile transport demand for the transport service of harvesters in the grain harvesting process. The program has a simple and intuitive user interface, a flexible setting system. It allows to change the source data for needs everything agricultural companies. It doesn’t require an installation and it can function in everything operation systems, which is fitted for Microsoft office applications acting. It doesn’t require a special studying or deep knowing in a mathematical statistic for using. Everyone specialist can use the program in an agricultural enterprise. The program considers distribution laws of stochastic parts of the grain harvesting process. These process features are important to consider due to using of determination values give very rough results. If there are mistakes in the structure design of the harvesting-transport complex then there are nonproductive machines downtimes or the harvest losing. Using the program gives better organization of the transport service in the grain harvesting process, and it can give the economical effect. It is especially important in modern competitive conditions at the worldwide market of agricultural products and also at the interior market with consideration of external economical sanctions and with consideration of the declared import replacement course. The successful work of agricultural enterprises defines the country's food security and it turns down the oil dependency of the Russian economy
The article presents the opportunities of system dynamics to study the regional consumer market. The synthesis, testing of the simulation model have been carried out, along with presenting examples of the use of the model in the regional management
Energy complex of the country is a collection of
electrical installations high and low voltage, producing,
transforming, transporting, distributing and consuming
electricity. A huge web of networks and more than 700
generating plants with a total capacity of about 230 GW
[1]. Almost 90% of this potential is formed in a unified
technical complex of the Unified energy system (UES)
[2]. Now there is a deterioration of the performance of
the sector. In comparison with 90-mi years of XX
century, more than 1.5 times increased power losses in
the power grids. Significantly increased the proportion
of obsolete electrical and auxiliary equipment, and the
load on the network every day only increase. All speaks
of the necessity of both local and global modernization
of the electric power complex of the country and the
creation of a new concept of consumption management
and energy distribution in the network. In the
framework of the energy strategy of the Government of
the Russian Federation dated 13 November 2009 #
1715-R, to improve handling and ensure reliable
operation of electric power systems, wider introduction
of flexible transmission system (FACTS devices) and
improvement of systems of automatic emergency
protection and dispatching control [1]. The development
of electric power complex of the country should be in
the way of intelligent networks. This is possible through
the use of modern components that can make the
process of managing "intelligent". In foreign literature,
this term is called the Smart Grid
The Role of Excimer’ Molecule in the Conditions of the Impulse Glow Discharge is shown in the article. The accumulation of abovementioned molecule is needed for the successful synthesis of the fluorine argon compounds.