Renewable energy is the energy generated from natural resources such as sunlight, wind, rain, tides and geothermal heat which are renewable. Energy resources are very important in perspective of economics and politics for all countries. Hence, the selection of the best alternative for any...

Purpose – This study aims to develop a decision making model and approach for logistics planning problem which naturally involves two or more decision units at a hierarchical structure. Such a decision problem in practice often involves uncertain and imprecise factors with the parameters of a...

Purpose – The purpose of this paper is to discuss the applicability of investment decision‐making techniques under fuzziness. Design/methodology/approach – The paper explains how fuzzy sets can be used in investment decision making. Findings – It was found that any classical investment...