Popova V. Economic ground of investing reliability at the construction enterprise.

The thesis is devoted to development of methodological and practical tools of an economic ground of investing reliability at the construction company in the probabilistic nature of environment. The developed method of discrete conditions and improved method of sequential substitutions are presented in this work. Using a variant modeling of possible combinations of cash flow parameters allows to define the basic values that provide acceptable economic efficiency for a given level of reliability. The necessity of taking into account opportunity costs when calculating the payback period. The effect of discount rate on the reliability of investment is determined. It allows to define the range of possible future deviations of discount rate to a negative side at which indicators of economic efficiency will keep acceptable values. The conditions of parametrical refusals on each main efficiency indicator and full refusal of economic system are established and formalized. It allows to define when the investment process stops responding desired level of reliability and when investments are inappropriate.