It must besald that neither RSTP Indicator nor Indicators of relative saving of separate resources <RWand RF> are not additive. I.e. they cannot be added by direct count by separate products or economic entitles {brahcnes, ·enterprises) If there Is no coincidence of output growth rates of these entitles with the natloanl Income growth rates. In such cases there appear additional factor conditioned by structural heterogeneity of the national economy as wei I as by unequal growth rates of separate economic entitles. It Is nece.ssary to take account of this factor by Introducing the effect of structural changes In the national economy In a general scheme. To determine Its value It becomes necessary to analyse lntersectoral ties and proportions of economic growth of separate branches, enterprises (amalgamations). Under these conditions It Is possible to single out a certaIn part from the macroeconom lc RSTP value wh lch results from the structural changes In the economy. Relative saving of resources (STP effect} constitutes a part of the total national economic effect. Its another part Is ~15 represented by the effect achieved through enlargement of -economic measures effective from the position of basis time moment. It Is cal led the scale effect (R ): s R •R R • <Y -s )[Y /Y )-tl (9) s STP t-t t-t t t-1 Given the fact that RSharacterlzes the enlargement of output leading to the Increase of the total economic effect It Is rightful to qual tty It as Intensive and not extensive factors. When making a choice of the best planning or project prepparatlon variant of production development, creation and Introduction of new technology, reconstruction of the existing and constructton of new enterprises Indicators of annual and Integral economic effect of new technology are used. The annual effect Is calculated by dividing the difference 
**Analysis**
The text appears to be discussing economic concepts and indicators, such as RSTP, relative saving of resources, and structural changes in the national economy. It also mentions the calculation of economic effects and the choice of planning or project preparation variants. These topics suggest that the text is related to economic development and planning.

**Category**
Economic development