The honored science and education member of the RANS, corresponding-member of the IAS of HS, Dr.S. (eng.). Professor, Pil E.A. Russia, Saint-Petersburg, Saint-Petersburg State Marine Technical University

The classification of dependences of volume change of an economic shell Ve as affected by the external and internal forces Pv

When affected by external or internal forces (or by both of them combined), economic shells deform, and their deformation can be sorted into the following types presented in 64 different types.

At the simultaneous expansion (retraction) of economic shells (or at their expansion and retraction combined) it is implied that it may take place proportionally, i.e. according to one mathematical law and by one and the same relative value percentagewise, as well as disproportionally, i.e. according to different mathematical laws and by different values percentagewise.

Complex deformation of an economic shell is understood as deformation during which there is simultaneous influence of external and internal forces applied to different locations. That said in one or several areas the economic shell retracts under the influence of external forces, and in one or several locations it expands under the influence of internal forces. In this case external and internal forces affecting the economic shell may be similar or different in value.

Based on the figures described in paper earlier, we developed a classification of dependences of volume change of an economic shell as affected by external (internal) forces [1]. The classification is presented in Fig 1. It is applicable both for economic shell expansion and for its retraction.

The classification shown in Fig. 1 can be represented in the form of a graph given in Fig. 2 where the nodes of the graph are linear and curvilinear dependences and their combinations that can increase or decrease, be symmetrical, etc., and the edges are their characteristics. Thus, the better we know the parameters of characteristics of node edges, the easier we will draw correct conclusions while analyzing the economic situation of a state and its population.

LITERATURE

1. E.A. Pil. Deformation of Economic Shells as Affected by External and Internal Forces. Modern Economy Issues.