abstract nowadays, the science of decision making has been paid to more attention due to the complexity of the problems of suppliers selection. as known, one of the efficient tools in economic and human resources development is the extension of communication networks in developing countries. so, the proper selection of suppliers of tc equipments is of concern very much. in this study, a ...

  The development and growth of science is based on method. Aristotle treated this issue seriously and formulated logic. Muslim thinkers accepted the comprehensibility of his idea and during some centuries developed it and exported to the west. During the last three centuries of the Middle Ages the issue of method was followed up seriously and induction enjoyed more importance. The scientific ...