The tillage with moldboard plows is one of the energy-intensive operations in farming. In view of this, the search of the energy saving solutions and tillage aggregates receives priority. The use of rotary tillage tools based on the working body-mover with elliptic blades, which horizontal soil reaction parts are directed to favoring grade of the aggregate, and, therefore, apart from the performing engineering perform the body-mover functions, - is one of the effective ways of the energy cost reduction. The authors offer the development of the rotary cultivators based on the working body-mover with elliptic blades. The change of their design values allows the development of various profiles tools. The use of these working bodies based on rotary cultivators will allow the energy cost reduction by the tillage process, especially in the compartments of terrain, as the use of tractors with moldboard plows for the main tillage is problematic. In many cases, these lots must be labored manually. The article describes the construction, generalizes the mechanical specifications and working modes of the rotary cultivator at the main tillage
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
In this article, we consider problems of power supply of modern electronic devices. The author proposes a new concept of source of power, which resolves this problem. In addition, this article describes limitations of existing desertions in the area of power supply. In the article, we suggest ways of resolving this limitation by creating a new source of power based on principles, which are different from the existing way. In this article, we develop a theory of creating a universal modular source of power, which would have some advantages. This article considers an optimal structural scheme of that source. We have developed a source of power which meets the requirements of power supply of modern electronic devices and has a potential supply for the next development
We have experimentally studied fluctuations of power of an electric arc in different types of plasmatrons with different power supplies in the article. Influence of fluctuations of power of the plasmatron on technology parameters of a plasma stream (current, voltage, an enthalpy, temperature, speed of a plasma flow) and on process of forming of coatings at impulse plasma was experimentally shown that the nature of fluctuations depends from fluctuations of voltage of the power supply, plasmatron type and also from fluctuations of an electrical arc. The size of fluctuations of power can be 50-100%. It is experimentally shown that impulses of power of an electric arc are capable to complicate supply of sprayed powder in to the plasmatron. Such fluctuations do not make dispersion of the melted powder particles. In the work, we have drawn conclusions that large-scale pulsations are capable to worsen quality characteristics of plasma coatings significantly
The aim of the research was the theoretical
justification of the main design-technological
parameters of the experimental milking apparatus with
an overhead milk removal from the collector. The
milking machine comprises teat cups, collector,
pulsator, milk hose, and vacuum. The manifold is
formed with an upper withdrawal of milk by means of
a vertically mounted suction tube. The upper end of
which is located in the output region of the milk tube,
and the bottom – in the bottom of the milk camera
collector. The article presents the results of theoretical
studies on the analytical substantiation of structural
and technical parameters of the milking machine. It
presents graphic dependences characterizing the
convergence of results of theoretical and experimental
studies of the milking machine
We live in a world of rapidly developing information
technologies, where many organizations are related to
each other, forming complex information networks.
Therefore, storage, analysis and retrieval of
information is a very complex and urgent task. In
connection with the advent of search engines and
communications, millions of people are engaged in the
search and retrieval of information. Commercial search
engines, such as Google, use keyword search based on
logical queries. The main disadvantage of this search
is that it returns a lot of irrelevant information, which
leads to low accuracy. In this article, we focus on
building a semantic search system based on the
mapping of the ontological model. This includes
various stages of development of ontology, the phase
of indexing and information retrieval
The article presents results of the study of devices for
preparation of feed based on the relative helical drums.
In addition, we have created a method of calculation of
the drive, including motor power. We have given a
calculation sheet for relative helical drums of types of
5.1 and 3.1, as well as typical schemes of devices for
preparation of feed (feed-making machines) composed
of hollow equilateral triangular of hollow tetrahedrons
pyramids and hollow octahedra. The created method
of calculation of the drive was tested in the calculation
of power consumption of feed-making machines based
on spiral reels of 5.1 type mounted using hollow
tetrahedrons and spiral reels of 3.1 type, assembled
from hollow octahedra. It is shown that in the
calculation of the actuator, we should not only take
into account the mass loading of feed components, the
relative weight of the screw drum assembled with
wheels, for a symmetrical load location, but also a lot
of download components of feeds, arranged in a spiral
relative the drum asymmetrically to the axis of
rotation. Thus, summing up the power of the electric
motor, required for relative rotation of the screw drum
symmetrically loaded and also under asymmetric load
we define the motor power for the device for
preparation of feed, or feed-making machine
Our research aims at providing new effective control
methods for scientific and technical expertise to
organizations and foundations that fund research
projects on a competitive basis. These methods should
provide analytical decision support for group decision
making in a distributed environment. In this work, we
consider an integral model for knowledge
representation – a socio-semantic knowledge network
that combines social links and a semantic description
of knowledge into a mathematically formalized graph
theoretic structure. In terms of actor-network theory,
we consider a multimodal network with actors on one
of the levels and artefacts (i.e. contexts that express
network links) on the other level. In order to represent
knowledge domain based on a graph and hypergraph
paradigm and fuzzy sets theory, we provide a
sufficiently complete set of elements and relations
(either trustworthy or partially trustworthy) both
between multitype elements and their heterogeneous
groups. The formal representation allows applying the
model to solve numerous practical tasks such as expert
finding, formation of expert groups, expertise
refinement, reduction of subjectivity, analysis of an
expertise process, analysis of processes within expert
groups. Research methodology: social network
analysis (SNA), theory of graphs and hypergraphs,
fuzzy calculus and fuzzy logic
The article describes a method for obtaining the functions
of energy and accumulation wind periods, using
the program Microsoft Office Excel. We have showed
the algorithm of the programs that had been developed
to reduce the processing time for large quantities of
data. Obtained functions are recommended for determining
the optimal parameters of autonomous windpower
stations with accumulated reserve
This article is devoted to the problems of the
improvement of foodstuffs quality as a component of
food security of the country and its regions. The
analysis of the difficulties of domestic producers of
foodstuffs associated with the imperfection of the
regulatory framework is made. Insufficient supply of
good quality foodstuffs can significantly affect the
well-being of the population, the health of the nation,
the sustainable economic growth of the country, its
financial stability, and overall economic security of
Russia. The priorities of the Strategy of improving the
foodstuffs quality till 2030 are given; the main of those
ones is the organization of monitoring over the
foodstuffs quality in security issues, power, food and
biological value, as well as in the field of consumer
characteristics (appearance, marking, etc.)