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The portfolio problem with present value modelled by a discrete trapezoidal fuzzy number

Piasecki K., Siwek J.

Operations Research and Decisions

2018

Vol. 28, No. 1

57--74

A multi-asset portfolio in the case of its present value estimated by a discrete trapezoidal fuzzy number has been assessed. The benefits of owning a security have been evaluated according to an expected fuzzy discount factor. The ambiguity risk has been assessed by an energy measure and indistinctness risk has been evaluated by Kosko’s entropy measure. The relationship between the expected fuzzy discount factor for a portfolio and the expected fuzzy discount factors for its components has been derived. An analogous relationship between the values of the energy measure has been presented. The model has been illustrated by means of a profound numerical case study.

Evaluation of economic effectiveness of the nuclear power plant

Michalak J.

Poznan University of Technology Academic Journals. Electrical Engineering

2010

No. 62

95-99

The article presents the results of the research on the economic efficiency of the electricity generation in a nuclear energy plant. The costs of the electricity generation were compared with the particular reference to the nuclear energy plant, coal plant and gas plant. The analysis was performed using the following methods: the Net Present Value NVP, the Rate of Net Present Value NPVR, the Internal Rate of Return IRR as well as the Simple Payback (SPB) and the Discounted Payback (DPB). In order to carry out a multi-variant simulation study of the economic efficiency indexes, the statement of cash flows has been used, taking into particular consideration the discount account terms. Additionally the sensitivity analysis has been made, basing on the dimensionless sensitivity ratio with reference to the investment, operational and financial factors.