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ANALYSIS OF BASIC HISTORICAL AND MODERN DEFINITIONS OF "RISK" CONCEPT
DescriptionIn this work, the comparative analysis of basic historical and modern variations of definition of risks is presented in general and from the point of enterprise activity. The gradual expansion of borders of concept of "risk" and its integral components in their direct interrelation is investigated and eventually proved. Its modern concept is defined

VECTOR MODEL OF ECONOMIC RISKS OF PARALLEL PROJECTS
DescriptionThe construction of vector models of the theoretical (quantitative) risks having cost has been shown. Model of parallel projects, vulnerable with the local risk, with construction of the generalized risk of this conglomerate of projects is shown. As a typical case of such design, the portfolio of securities is presented. Earlier offered vector dyadic model develops in fourdimensional model with various variations of vector (external) and scalar (internal) products of vectors of “risky cost” of local risks

Description
In the given article process of mathematical modeling of a mechanical trajectory of a drip of a fluid from a surface of upright gyrated disk sprayer is featured, for chemical protection of young fruit plants

MELIORATIVE PIPES FROM POLYMERCEMENT CONCRETE
DescriptionIn the article the expediency of application of polymers water dispersions (WDP) in pipes concrete with the metal core, applied on reclamation systems is shown

NANODISPERSED CARBON PARAMETERS DETERMINATION FOR PLASMA CHEMISTRY ISOTOPE SEPARATION
DescriptionThe dust collection methods and apparatus, as well as heterogeneous system monitoring methods and devices were considered. The disperse particle counter was developed and tested. Shown that particle counter makes it possible to register a disperse phase presence by mass concentration over 31014 g/m3 and to estimate a dust particle dimensions

TURBULENT TRANSFER EFFECTS OF THE FINE PARTICLES IN THE LIQUID PHASE OF DYNAMIC SEPARATORS
DescriptionThe turbulent movement of the liquid with dispersed phase in the channels of thin layer clarifiers and hydrocyclones is reviewed. The evaluation of the dimensions of the particles, which are taken by the turbulent pulsation is performed. The turbulent sedimentation of the fine phase is researched as a type of a process of diffusion. Using the equations from the theory of mass transfer and the edge of the turbulent level, the coefficients of the speed of the transfer of the particles are acquired. The results of the calculations, covering the effectiveness of the turbulent separation are provided, with the use of the models of perfect mixing and displacement