The article considers the problems of determining the
settings area of the control device, which ensure stable
operation of the closed system. It shows the solution to
the problem using the enhanced amplitude-phase characteristics.
The proposed method of finding the domain
of stability of parameters of the control device is
more simple than classical methods and allows, in
general, to find conditions for the stability, not to test
the system for stability under given parameters
The article proposes the updated model of the influence of logs length onto a size of wooden chips produced with the use of a disk chipper. This article focuses on the fact that the length of any of the logs in the process of chipping is reduced. For this reason at the final stage of chipping, any of the logs with a standard initial length of 1.2 m inevitably transform into short logs, for which the conditions of chipping are significantly different from the chipping conditions at the start of chipping. The task of accounting for these changes is reduced to finding a solution of the transcendental equation. The results of numerical simulation indicate a progressing decreasing trend in the bevel angle and increasing in the length of the particles of wood chips with decreasing of logs length. Adequacy of the modeling results confirmed by laboratory tests and production experiment. Measuring linear and angular dimensions of chip real particles showed that the particles of such length may be equal to 7 cm, which is 3.5 times larger than the standard length of 2 cm. The angle of the bevel of the cutting plane of the particle may be 14º, which is approximately three times less of standard value equal 39º- 43º. We also discuss the comparison with the approximate solution, which was published in 2012 year. The article can be useful for specialists of wood-preparatory cycle in the paper industry
In this article we consider the usage of HRU access matrix changing system allowing for information security system which makes mandatory access control in case of information security analysis by
using an automatic classification of formalized documents in the system of electronic document management
This article considers a possibility of increasing adaptive potential of stevia - native substitute of sugar impacting with influence of processing BAS of green apical sprigs used for receiving seedlings
This article is devoted to the practical application
of economic-mathematical methods (based on correlation
analysis) to control the economic parameters
of the integrated production systems sugar
subcomplex (IPS SS) AIC oriented to meet the
needs in the sugar production of the population not
only of individuals, but also of the regions and the
country as a whole. This article discusses and
solves the following tasks: autocorrelation and
partial autocorrelation functions, cross-correlation
function (correlation matrix) study of deciduous
macroeconomics series, with appropriate verification
(test) Durbin - Watson. The study used Statistica,
MS Excel and Xlstat add-in. The work describes
experiments with various kinds of nonstationary
time series of the agricultural sector and
food industry sugar subcomplex, as well as the test
results on the difficulty of communication between
them. We have identified industry-high cycles. The
article presents results of numerical experiments
autocorrelation of the time series of sugar production,
acreage, gross harvest and yield of sugar beet
and sugar cane, by country. Systematically, we
describe ideas and methods underlying the correlation
analysis. We have given the evaluation of the
results of correlation analysis on each type. Further,
it can be assumed that the proposed techniques
will greatly affect a key points when making
recommendations for new models of production
of sugar products, market-oriented – this will
minimize the time and cost of the finished product
that will make a more stable position in the sector
for this integrated production system in relation to
its competition
This article is devoted to the practical application
of economic-mathematical methods (based on correlation
analysis) to control the economic parameters
of the integrated production systems sugar
subcomplex (IPS SS) AIC oriented to meet the
needs in the sugar production of the population not
only of individuals, but also of the regions and the
country as a whole. This article discusses and
solves the following tasks: autocorrelation and
partial autocorrelation functions, cross-correlation
function (correlation matrix) study of deciduous
macroeconomics series, with appropriate verification
(test) Durbin - Watson. The study used Statistica,
MS Excel and Xlstat add-in. The work describes
experiments with various kinds of nonstationary
time series of the agricultural sector and
food industry sugar subcomplex, as well as the test
results on the difficulty of communication between
them. We have identified industry-high cycles. The
article presents results of numerical experiments
autocorrelation of the time series of sugar production,
acreage, gross harvest and yield of sugar beet
and sugar cane, by country. Systematically, we
describe ideas and methods underlying the correlation
analysis. We have given the evaluation of the
results of correlation analysis on each type. Further,
it can be assumed that the proposed techniques
will greatly affect a key points when making
recommendations for new models of production
of sugar products, market-oriented – this will
minimize the time and cost of the finished product
that will make a more stable position in the sector
for this integrated production system in relation to
its competition
The article presents a research on the influence of Felucene P-2 on the growth of black African ostriches, as well as on the hematological parameters of the blood of ostriches. For the experiment, two groups of ostriches, aged 2 months, were formed: the first one received a standard diet, the second - the Felucene p-2 feed complex was added to the standard diet. As a result of the conducted research, it was found that Felucene P-2 is an effective feed complex of domestic production, allowing under equal conditions of feeding and maintenance to increase the growth and development of young ostriches. From the age of 120 days, an increase in the average daily increase in the live weight of black African ostriches was recorded, and high growth energy of the bird was observed up to the age of 240 days
In the current economic situation, the
developing of cattle breeding is taking on
special significance. It is well known that the
effective way to develop cattle breeding is to
increase the total number of efficient livestock.
The numerous researches show that the high
concentrated fodder premix diet gives the
highest effect in increasing animal indicators [1,
2, 3]. Traditionally, the premix is a powder
mass, which should be added into the mixture
of grain components. Exact following the recipe
of prepared fodder allows the maximum usage
of forage potential of the concentrate
components [4, 5, 6, 7]. In view of the
foregoing, food enrichers have special actuality
in making high concentrated fodder [8, 9, 10].
The usage of differential Fokker – Planck
equation systems allows determining the laws
of the mixing process of various granulated
products. As a result, it becomes possible to
optimize the technological process of the mixerenrichers
of concentrated feed so that the
resulting mixture of feed would have high
quality and technological characteristics. At the
same time the duration of sewer-enricher’s
work and, as a consequence, the energy
intensity of the technological process would
accept the minimum possible values [11-16].
The given theoretical approach is based on the
consideration of the motion of an individual
particle contained in a loose grain mass (phase).
Concerning this, it is necessary to accept a
number of assumptions about making effort to
the feed particles, and the velocity vectors of its
initial motion should be taken into account.
Taking into account the complexity of the
mathematically derived differential equation, its
literal analytical solution seems very difficult.
Therefore, the first step of the solution is aimed at the obtaining the non-stationary diffusion
equation of Fokker - Planck and the boundary
conditions for isolating the only one solution.
The second step of the solution is implemented
by the tabulation at the grid-based points, that
is, considering the differential equation not at a
random point of the area, but only at the grid
nodes. Moreover, it is necessary to apply the
approximation of the derivatives at each node.
The solution of the equation system allows
determining the module of the minimum,
average, and maximum values of the phase
particle motion in different parts of the mixing
chamber, respectively. In connection with this,
the aim of the study is to substantiate the
processes of motion of various types of
granulated products
The article discusses issues related to humorous, ironic, satirical figure, which is one of the kinds of fine art. Forms, styles and genres graphs of this type were reviewed. The classical method of analysis has been used in the article, only the subject of the analysis was images of various phenomena in agronomic practice. Basic definitions of humorous illustration, showing the history of its creation are presented. In the example of drawn short stories by Dutch artist Herluf Bidstrup we show possibilities of using a humorous picture as a good example of observation of the development of plants. We have marked characteristic features of modern cartoons - the ability to largely reflect the concerns associated with the development and application of new technologies in the agricultural sector and economy. Towards a new form of comic drawing we can consider a meme as a unit of cultural information. The caricature is as follows-known work is presented in an entirely different semantic perspective, it is like tracing paper for lighting any problems. The emphasis is on the possibility of using intelligent and ironic drawings in the teaching discipline of "History and methodology of scientific agriculture" for better learning, remembering and propaganda agronomic knowledge
To improve the efficiency of using receivable accounts at the enterprise, there is an objective need to perform its constant control. The management of the accounts receivable allows to consider the issues arising during the execution of payments from the debtors of the enterprise in due time and to take essential measures to overcome such situations. This will ultimately have a favorable effect on the financial condition of the company. This article reviews the possibility of using information technologies for the management of the accounts receivable of the enterprise through the implementation of a balanced credit policy. The presented software tool makes it possible to calculate the final credit rating of each enterprise’s debtor by determining the sum of the weighted estimates of all risk factors, to determine the credit limit of each debtor, based on the total debt limit of the company, or on the basis of average monthly receipt from the funds of the debtor. Furthermore, the program helps to calculate the sum of discounts given to the debtor for the timely merchandise payment, or the sum of the fine for breach of the payment discipline. The use of information technology to automate processes of the accounts receivable management of enterprises can significantly reduce economist’s time of work spent on this issue, define emerging problems in this sphere in due time and help to make justified management decisions to overcome such problems