Article history: Received 10 February 2014 Received in revised form 31 October 2014 Accepted 26 December 2014 Available online 5 January 2015

Abstract The main objective of this article is to lay the foundations a novel multi-criteria optimization technique, namely, complex Pythagorean fuzzy N -soft VIKOR (CPFNS-VIKOR) method that highly proficient express great deal linguistic imprecision and vagueness inherent in human assessments. This strategy provides versatile decision-making tool for ranking-based modeling two-dimensional para...

Species selection based on a new method such as a fuzzy method is one of the most important stages in the successful plantation management planning as choosing a suitable species for the site can be the key to success. This paper is based on a fuzzy extension of the Technique or Order Preference which is similar to Ideal Solution (TOPSIS) method. The purpose of this paper is to develop fuzzy TO...

The TOPSIS process is one of the most comprehensive systems designed for decision making with multiple criteria, since this technique enables formulation of the problem as decision matrix, as well as the possibility of considering different quantitative and qualitative criteria in the problem. Fuzzy TOPSIS methods have been introduced to make fundamental decisions that make decisions decisions ...

in recent years, underactuated nonlinear dynamic systems trajectory tracking, such as space robots and manipulators with structural flexibility, has become a major field of interest due to the complexity and high computational load of these systems. hierarchical sliding mode control has been investigated recently for these systems; however, the instability phenomena will possibly occur, especia...