Name
Laptev Vladimir Nikolayevich
Scholastic degree
•
Academic rank
associated professor
Honorary rank
—
Organization, job position
Kuban State Agrarian University
Web site url
—
Articles count: 51
The authors investigate the conditions conducive to the formation of effective associations of raw material enterprises of the agroindustrial complex and raw material processors. The unbalanced process of relations between agricultural producers and processing plants negatively affects the economic position of the partners of the merger. The diktat of low purchasing prices for raw materials by processing enterprises hinders the cost-effective operation of agricultural commodity producers. Procurement prices set by dairy processing enterprises for milk do not compensate not only production costs, but also losses from inflation. This leads to a sharp decline in the profitability of milk production. A paradoxical situation arose: on the one hand dairy plants encountered an acute shortage of raw materials, on the other, the problem of selling milk by its producers at an acceptable price was aggravated. The disparity between the purchase prices for milk and retail prices for dairy products has led agricultural enterprises to explore alternative markets. On the basis of the mathematical model of the agricultural consumer cooperative, conditions for the formation of effective associations of enterprises of the dairy subcomplex of the agroindustrial complex are analyzed
The work is done in scientific and practical directions
for minimization of power losses in transmission of
electricity to local distribution networks between the
actors of the energy (producers and consumers) of
energy-saving technologies focused on technological
activities such as modernization and reconstruction of
networks. Quite often in various circuits of power
systems, it is advisable to transfer energy and its power
through intermediate (transit) nodes. Structural
changes in the electricity sector, at present, are mainly
associated with the introduction of market relations
between the subjects of energy exchange; therefore, in
this work special attention is paid to the problem of
calculating the power losses, as it is nonlinearly
dependent on the power at the nodes and branches of a
network. It should be noted that the nodes in problems
transit capacity could be both sources and consumers.
The latter necessitated the need for search of possible
ways to reduce transportation losses of energy due to
both the improvement and optimization of distribution
networks and through the use of intermediate transit
nodes. It follows that the transportation problem in this formulation is more General and expands the
possibilities of optimization of power losses for the
local subsystems of the energy clusters. The work is
composed of the transport matrix for solving problems
transit capacity, where the algorithm taking into
account the distinctive features of which consist in the
use of continuous numbering of sources and
consumers in the matrix, and any node can be a transit
country. The transit capacity ii-th node Zii=0, and the
dimension of the matrix in contrast to the previously
considered tasks has (n+m) (n+m) and it remains
square as all the transport problems of linear
programming. Transit variables Xii are included in the
solution of the problem with a minus sign, and all
transit variables are considered basic. From the above
example in the work of a number of branches of a
network is minimal, which significantly reduces the
cost of building and maintaining the network, and the
solver minimizes the power loss between the subjects
of energy exchange and, as a result to savings from the
standpoint of cost of construction of the network and
the management of overflows of energy in it
This article discusses the general principles of developing software applications for generating and verifying practical tasks in mathematical disciplines in the Visual Basic for Application development environment. The article describes the structure of computer programs, the main components of the implemented macros are also investigated, the algorithms of the basic procedures are given. A special place is given to the problems of identifying students and protecting the generated data. We have also given recommendations on the use of developed programs in the educational process