The aim of the research is analytical determination of
the middle speed of the corn seeds on the flat vibrating
sieve of finite width. The object of the study is the
process of sorting of seeds of corn on the flat vibrating
sieve. The mathematical modeling of the motion of the
separated layer of the cereal mixture on the sieve is
conditioned by the necessity of intensification of
division of grain-growing materials on a flat sieve.
Despite the significant progress in the development of
mathematical models of the motion of a mixture on
vibrated sieve, their further refinement remains an
actual task. In particular, in calculation practice, theory
in which the width of the flat sieve is considered
infinite is used, i.e. the impact on the process of the
moving frame of the sieve bed is not taken into
account. In connection with absence of estimations of
the error brought in by this assumption, the necessity
to develop a theory of the movement of the mixture on
a sieve of the finite width appeared. For the analysis,
the following assumptions were accepted: first, the
corn seeds were considered as balls of different
diameter, second – the layer of grain on a sieve was
considered as heterogeneous viscid liquid. Based on
undertaken study it is set that most rational for the
achievement of the put aim is application of method of
Bubnov-Galerkin. As a result of undertaken research
analytical dependences are received for the calculation
of flowrate of grain mixture on the vibrational sieve of
the final width taking into account separation of the
mixture into factions
This article discusses the principles of quantum
computing simulation using hardware approach. We
describe a general mathematical model of a quantum
computer; we show the method of mathematical
modeling of quantum computation with optimization
and a scheme of a hardware processing core in a
quantum computing accelerator. The article gives a
method of assessment of increasing productivity in the
simulation of quantum computations using computing
hardware core. The problems associated with the
parallelization of computations on a hardware
accelerator, simulating quantum computing were
analyzed. The work lists the results of comparison of
software and hardware simulation, as well as the
dependence of the temporal evaluation of the number
of qubits and parallel ALU in the computer-hardware
accelerator
The basis of Semantic Web technology is the
possibility of joint construction of ontology and the
formation of the dictionary without centralized control.
All the information and the knowledge encoded in the
ontology as semantic web-terms and the semantic
web-documents. Swoogle helps software agents and
knowledge engineers find Semantic Web knowledge
encoded in RDF and OWL documents on the Web.
Navigating such a Semantic Web on the Web is
difficult due to the paucity of explicit hyperlinks
beyond the namespaces in URIrefs and the few interdocument
links like rdfs:seeAlso and owl:imports. In
order to solve this issue, this paper proposes a novel
Semantic Web navigation model providing additional
navigation paths through Swoogle’s search services
such as the Ontology Dictionary. Using this model, we
have developed algorithms for ranking of Semantic
Web objects at three levels of granularity: documents,
terms and RDF graphs. The article focuses on the
ranking at the document level, based on a rational
search model, which emits the agent's behavior when
navigating at the document level, and ranking on level
terms, the value of which is determined by the number
of their references in all documents
One of the key areas of interdisciplinary research is to
ensure public safety. In order to solve a number of
problems within this area we can effectively use
information technology and, in particular, an
automated pattern recognition technology and
identification of objects on digital images. There are
addition problems in objects identifying process
besides eliminating the influence of ambient light,
angle, items of clothing and headgear. To ensure the
applicability of the recognition approach to public
security issues it must meet requirements of the high
processing speed, the replenishment capabilities onthe-fly
list of known images, and the low
computational complexity of algorithms. The article
deals with the main approaches to the recognition and
identification of objects on digital images based on
statistical approaches, as well as neural network
models. We have allocate their basic features and
principles, provided a brief description of each
method. Consideration has been made in terms of the
application for the problems of public safety, in which
there is importance of the speed of the identification of
the object, the ability of quickly learning for the
system to accept new images and simultaneously
process a plurality of input images. The analysis of the
existing approaches has shown that none of them
satisfy at least one or several needs, which are defined
by domain problems of public safety
The article shows the influence of pre-treatment
with a solution of sodium chloride and a solution of
succinic acid in various concentrations to clean the
baskets-of inflorescences of sunflower from the
ballast towards the pectin substances. The
application of these solutions helps to reduce
protein, coloring and aromatic substances contained
in baskets-inflorescences of sunflower, as well as
easing the connection of calcium ions with
protopectin in inflorescences of sunflower, in the
future, cleaned baskets-blossoms of the sunflower
are used as raw material for producing high-quality
pectin extract
The problem of environmental protection from toxic contamination, i.e. toxic products contained in exhaust gases, is one of the most pressing in the modern world.
Currently, internal combustion engines and vehicles of transport and technological machines rank first in power supply in the global energy balance. The total amount of pollutants released into the atmosphere by tank-automotive equipment exceeds more than three times the emissions released by industrial companies. Besides the vast majority of tracked and wheeled vehicles are equipped with diesel engines, which excel gasoline engines in harmful substances released together with exhaust gases. Therefore the problem of emission control becomes more and more urgent. The aim of this study is the analysis of modern means and methods of reducing the toxicity of exhaust gases released by diesel engines.
The existing methods of emission control can be divided into four groups: improving the design of the internal combustion engine; the accounting of operational factors affecting the toxicity of exhaust gases; the use of unconventional fuels; the exhaust gases cleaning in the exhaust pipe. Each method has several major ways to reduce the emission of toxic substances, which are often mutually complementary. We have cited the research date of influencing each of the methods on the emissions of toxic substances in exhaust gases. We have found that reducing the emission of toxic substances in compliance with Euro-6 requirements can only be obtained by the simultaneous use of several methods of reducing emissions.
We have proved the effectiveness and economic feasibility of using combined neutralizers to clean exhaust gases
In recent decades, Russia has increased the demand for
high oleic sunflower oil and, consequently, for the raw
material from which it is derived – high oleic sunflower
seeds. Currently existing methods of control of mass
fraction of oleic acid in the seed oil of sunflower, have
significant drawbacks, due to which sharply raises the
question of the development of the Express methods of
control of mass fraction of oleic acid. The study presents
the results of determining the mass fraction of oleic acid
in the oil of sunflower seeds, obtained by known
methods (GC and ri), and developed a method based on
NMR. The developed method of determining the mass
fraction of oleic acid in sunflower seed oil has a number
of advantages compared with the known: is not
destructive (does not require the extraction of oil from
seeds), does not require special sample preparation
excludes the use of toxic chemicals, the analysis duration is 5 minutes, ensuring high representativeness of the
sample, and the simplicity and automation of the analysis
process reduces the requirements for qualifications of
laboratory personnel. The developed method of
determining the mass fraction of oleic acid in the oil of
sunflower seeds can be carried out simultaneously with
the determination of oil and moisture content of seeds on
commercially available analyzers, but I hope it 1006М,
which is currently applied at more than 250 companies of
oil and fat industry
From a review of the literary sources it is revealed that the existing vibration exciters are classified into mechanical, electrical, hydraulic and pneumatic. One of the most promising areas of development and use of sources of vibrations for tillage tools are electrical exciters of mechanical vibrations namely solenoid with a metal core inside. Based on the analysis of existing technical means for soil cultivation we are proposed a new technical mean of vibration exposure for tilting the soil without or before ploughing. Theoretical regularities of change of draft resistance depending on the vibration amplitude and the mass of the vibration exciter were received in the studies. A structurally - technological scheme of the combined tillage combine with electric vibration exciter and a device for automatic regulation of the technological process of the work of tillage machine was developed. The proposed vibration tool will supposedly reduce the soil resistance force acting on the working bodies, which will reduce energy costs up to 20% for the technology process of soil cultivation; harmful emissions from the combustion of diesel fuel into the atmosphere were reduced. The proposed technical mean can be used for soil cultivation in different soil fertility under different soil density
In the study of the processes of growing, harvesting,
post-harvesting processing and delivery of fruit and vegetables it seems to be rational to have generalized
control of the "product – environment – packaging –
transport - storage" in general, as well as providing
the possibility of creating optimal conditions for fruit
and vegetable products depending on its condition.
The basis of ensuring product integrity at all stages of
production is a system approach with application of
modern information technologies. Optimization of
logistic processes in the agro-industrial complex
(AIC), in addition to cost, market influences many
important indicators of the final product of this
complex: quality, timing and reliability of supply, the
size of the delivered batches, etc. The quality of fruits
and vegetables begins to change dramatically
immediately after harvesting. Being in a stressful and
unfavorable conditions, fruit, vegetables, root crops
intensively lose moisture and consume nutrients,
secrete aromatic substances, carry out the breathing
process. These losses are caused by biological factors
fit fruit and vegetable products to the changed
conditions. Thus, the main indicators of the quality of
products to control rationally in the process of
harvesting and subsequent production phases take
into account the data obtained to optimize process
parameters to reduce losses and damage products.
The article discusses the prospects of applying the
system-information approach to the formation of
quality of fruits and vegetables during transportation
and storage. The proposed embodiment of a
generalized control of the "product – environment –
packaging – transport - storage", aimed at ensuring
the possibility of creating optimal conditions for
easy-to-sell agricultural products (fruits, vegetables,
root crops) depending on its condition. We have
established that rational technology of production and
sales of products must have the ability to control and
operational adjustments depending on the level of
quality input products from the stage of harvest
In the article we consider questions of use of gearless electric drives with the linear asynchronous engines. Constructions of engines, their features and the principle of action in the electric drives of difficult oscillating motion executed on system the frequency converter – the asynchronous engine, deprived of shortcomings inherent in geared electric drives are described. Recommendations for a choice of an optimal variant of the drive of a working organ of the technological machine which is carried out on the basis of determination of value of the gained technical and economic effect are made. Methods of technical and economic project evaluation are offered: a method of a maximum of economic effect and a method of a minimum of the given expenses, their assessment is given. On the example of the grain-cleaning machine Petkus K531A and the roller-deck machine SGR-400 determination of technical and economic effect is made and an economic assessment of upgrade is given. The conclusion is drawn on validity of use of gearless electric drives from linear asynchronous engines in a technology equipment of agrarian and industrial complex due to lowering of energy capacity of technological processes because of an exception of gears and transformers of a type of movement; in some cases increase in an output of the final product due to increase in efficiency of technological process is watched; implementation of difficult oscillating motion allows to look at execution of a row of technological operations with development of new technological machines in a new way