Today, the Russian agriculture is facing food market
saturation task by domestic quality products in
sufficient quantities for the needs of the population. At
the same time healthy nutriment is provided,
according to doctors and scientists, by vegetables,
which must be present in the diet of a healthy person.
In this regard, a big role is assigned to the covered
ground crop production, normal functioning of which
allows to supply shops and markets with vegetables
throughout the year. For the formation of the necessary
environment inside the greenhouse promoting
normal plants growth, the main role is played by the
solar radiation penetrating into the greenhouse through
the transparent enclosure and creating necessary light
and temperature and humidity regime. Comparison
and analysis of the main cover and light-transmitting
materials (film, glass, polycarbonate) characteristics
revealed polycarbonate to be the basic material today,
light transmitting characteristics study of which this
article deals with. As a research method, molecular
optical spectroscopy was applied. In order to study
there has been selected waveband with their length
value from the 610 to 700 nm, which spans exactly the
shortwave part of the solar radiation spectrum, which
is necessary for the proper implementation of the
plants photosynthesis in artificial rearing conditions.
After analyzing the measurements results it can be
said that studied "KARBOGLASS AGRO" polycarbonate
samples, despite the substantially greater thickness
in comparison with for example plastic film that
is widely used in the old fashioned way, are characterized
by higher value of light-transmitting ability for
light wavelength values passing through the material -
respectively of 79-80,4% and 75,4-77%. Light transmission
of "KARBOGLASS AGRO" cellular polycarbonate
is at 5 ± 1% higher than of other traditional
materials. Among the studied coating materials for
covered ground facilities and due to the research results
of their light-transmitting capacity, today cellular
polycarbonate is of undoubted advantage
Modern small logging enterprises exporting timber
primarily by lorry transport do not have resources for
implementing research that contributes to reducing
the cost of this type of transport. Besides, there is no
universal and accessible planning methodology and
operative decision-making in the organization of
timber export by lorry transport. Because of this, the
author of the article has proposed a methodology for
improving international timber transportation by
timber trucks. This methodology contains logging
modeling simulation, as well as analysis and contain
of different options of logging. Within the framework
of this methodology, a unique model based on the
discrete event simulation has been developed. This
model simulates a full cycle of timber transportation
from the terminal to several foreign consumers. The
working capacity of the model was verified by
simulating several export scenarios based on data
obtained during field study at one of the logging
enterprises, the annual logging volume of which is
400 thousand cubic meters. The analysis and
comparison of the modeling results have confirmed
the possibility of using this methodology in planning
and organizing international timber transportation for
small logging enterprises
Creation of new types of special electric actuators for the oil and gas industry implies development of new approaches to simulation, design of the considered types of electric actuators. In addition, it requires development of new algorithms for creation of a complex of application programs of computer-aided design of special electric actuators. As process of simulation is quite labor consuming, it is offered to realize it gradually. In this article, the question of mathematical simulation of special electric actuators for the equipment of oil and gas branch using methods of electromagnetic conversion of energy is considered. Results of mathematical simulation were realized in the form of the program products, which are a part of system of computer-aided design
This article considers the structure of the regional transport system of the forest complex, in which each mode of transport is characterized by a certain structure, technology of functioning and means. To describe the relationship between the parameters that determine the activity of a particular mode of transport, the production function method is used. Analytical dependence expressing the formal relationship between the parameters of various modes of transport is presented, the objective function of the organizational structure of the regional transport system management is presented, reflecting the efficiency of the entire transport system as a whole. The formulation of the problem is considered from the standpoint of game theory, in which there are four players with disparate interests: the organizational structure of the regional transport system and the three transport subsystems, each of the participants has its own control vector that belongs to the given set. We consider the case of full awareness, in which the hierarchical structure and all the objective functions of the system are known to the participants. The resulting statement of the problem is modeled by the game of four persons with conflicting interests. The game is viewed from the perspective of transport subsystems. To describe the relationship between the parameters that determine the activity of a particular mode of transport, the production function method is used. An algorithm for solving the problem is given
The purpose of the article is to use automated system-cognitive analysis (ASC-analysis) to study the impact of agrotechnological factors on the yield and quality of wheat and the use of the created models to solve the problems of forecasting, decision support and research of the simulated domain through the study of its model. To achieve this goal, the following tasks are set and solved, obtained by decomposition of the goal and are the stages of its achievement: Task 1: to formulate the idea and concept of solving the problem; Task 2: to justify the choice of method and tool for solving the problem; Task 3: to apply the selected method and tool to achieve this goal: cognitive structuring of the subject area; formalization of the subject area; synthesis and verification of the model; improving the quality of the model and the choice of the most reliable model; solution in the most reliable model of diagnostic problems (classification, recognition, identification), decision support and research of the simulated subject area by studying its model. Task 4: describe the effectiveness of the proposed solution. Task 5: to consider the limitations and shortcomings of the proposed solution to the problem and the prospects for its development by overcoming these limitations and shortcomings. A detailed numerical example of solving the problems based on 217 real examples of wheat cultivation in the fields of the Krasnodar region is given. For readers, it is possible to download this numerical example and install it on your computer to study
The article discusses the hybridological analysis of the
inheritance of plant resistance of winter wheat to
brown rust Putignano. For this purpose, we performed
the analysis on the varieties of wheat of local selection,
studied immunological reaction to R. triticina in
connection with the types of wheat resistance to leaf
rust pathogen. In the work, we considered the different
immunological parameters (type of plant response to
the introduction of the pathogen, the intensity of
infection of plants, the size of urediniospores, the
number of urediniospores in one urediniomycetes, the
amount of time from the time of inoculation until the
beginning of the first urediniomycetes (i.e. a measure
of latent period) and the area under the curve of
disease development). Study of the inheritance of the
type of plant responses to the introduction of the
pathogen by the method of hybridological analysis
revealed that this immunological reaction can be
controlled by both dominant and recessive genes.
Monogenic control of resistance in our study was
fairly uncommon and installed from THERE 200
varieties and Purdue 5396. It is shown that the
majority of the examined lines type of plant response
to the introduction of the leaf rust pathogen is
controlled, as a rule, several genes with different types
of interaction. The results of hybridological analysis
allow to draw a conclusion about what type of plant
response to the introduction of the parasite – an
integral indicator that takes into account the
morphological peculiarities of urediniomycetes (the
size and number of urediniospores produced in them)
In our country there is a system of compulsory employees’ insurance functions. First attempts to establish the responsibility of employers were taken over a hundred years ago, since then there have been significant changes. The current system of contributions to pension, social and health insurance funds has existed for about thirty years, but it constantly changes. Since 1990, the insurance functions have been shifted from the state budget to established extra-budgetary funds formed at the expense of deductions of employers. Since this system has not brought the expected results, it is repeatedly reformed. To legalize the payment of salaries and additional contributions the Unified social tax was developed in 2001, which lasted until 2010. Its purpose was to accumulate cash to realize citizens' rights for state pension, social insurance, and medical care. Its establishment did not lead to the increase of pensions and social benefits either. Nowadays, after the abolition of the Unified social tax every employer and sole proprietor in Russia has to pay insurance contributions to the Pension Fund, the Social Insurance Fund and the Health Insurance Fund. Throughout the studied period the contribution rates changed, introduced and abolished preferential tariffs. New turn of events in this sphere, specifically the introduction of Chapter 34 of the tax code, was the cause of attempt to systematize all the changes concerning payments to extra-budgetary funds for the past 26 years
There are the results of the research on creating a heat
exchanger. It is based on the experience of creating
equipment for swirling of liquid and gas flows and
changing of their directions, their whirling, leading to
destruction of the boundary layer on heat-transfer
surfaces and intensification of heat-exchange
processes. Screw rotors are suggested as working
bodies of the heat exchanger. Each flow-cross section
in them differs from the previous not only by its form
but also by its location relative to each other. With
that, the cross-section area changes, the medium
motion stationary breaks, the intensity of heatexchange
processes increases, technological
capabilities enhance. Screw rotors are supplied with
laps created on exterior surfaces of rotors during their
assembling and allowing intensification of heatexchange
processes. Dependencies for calculating of
screw rotors basic characteristics are presented in the
work. Screw rotors provided with helical grooves on
the inner surface with a spiral lines on the outer surface
of different pitch and number of visits. The work is
done on the basis of research carried out at the Kuban
state agrarian University on the use of helical rotors in
industry, construction and agriculture [1-23]
The authors note, that the system of state regulation of agribusiness sets the rules and creates a relatively equal competitive opportunities for all market participants. The state support though is directed to increase efficiency of the state regulation of all agricultural subjects, including small-scale farming. Classics of retrospective of market relations’ development have shown that the manufacturing business can be quite successful in a self-regulatory market. Later, the practice of using the Marxist economic theory revealed the insolubility of the contradictions in the functioning of the classical market model. The Paradigm of the Keynesian school has confirmed the contradictions of the classical equilibrium theory of the free market. In the result, the strategy of the industrial markets development has swept in the direction of the neo-conservative models of regulation. Today, the integration models that are using synthesis of state-and market-based regulatory instruments are remaining the philosophy of many Worlds’ developed economies. At the same time, in our agrarian economy, the balanced and equilibrium proportions of the development are absent, what requires greater state involvement in the regulation of the agribusiness growth. The authors believe that the latest Western sanctions provide additional opportunities for the development of domestic agricultural production. The state should actively use its capabilities in the development and strengthening of domestic agricultural production and access to foreign commodity markets. After achieving adequate competitive position providing sustainable economic growth of the agricultural economy, the intervention of state protectionism can be reduced and, simultaneously, the role of the liberal approaches should be increased
A variety of factors among which a special place is taken to the quality of lands influences the efficient functioning of agricultural organizations. Therefore, the study of methodical approaches to ensure the effective functioning of agricultural organizations taking into account the quality of lands is necessary to make balanced, economically substantiated administrative decisions. In the article there were defined the indicators of an integrated evaluation of the efficiency of functioning of agricultural organizations taking into account the quality of lands based on the account of key economic, technological and environmental parameters, providing an integrated picture of activities of these organizations for the rational use of all factors of production (land, labor, capital)