Soft set theory was initiated by Molodtsov in 1999. In the past years, this theory had been applied to many branches of mathematics, information science and computer science. In 2003, Maji et al. introduced some operations of soft sets and gave some operational rules. Recently, some of these operational rules are pointed out to be not true. Furthermore, Ali et al., in their paper, introduced an...

The authors regret that there is a correction needed to Reference [29] and apologize for any inconvenience caused. Reference [29] should read ‘‘N. Çağman, S. Enginoğlu, Soft set theory and uni-int decision making, European Journal of Operational Research 207 (2010) 848–855’’ instead of ‘‘N. Çağman, S. Enginoğlu, Soft set theory and uni-int decisionmaking, European Journal of Operational Researc...

This paper is an inquiry into the nature and characteristics of the so-called soft approaches in Operational Research (OR). After a first outline of soft approaches, six wellknown and widely applied soft approaches are selected for further study and characterisation applying a multi-dimensional framework. In addition, some reflexions about the limitations of such a framework are discussed.

â â â  some of the necessary approaches to access the sustainable and balanced development process for investment and fulfillment of developmen projects are spatial planning, determining operational scales and locating tourism centers scientifically. in this paper as part of the results of a great research project in bazoft area of chaharmahal bakhteari, over of functional-structural view, with...