abstract. today, there is no specific method or criterion for selecting contractors in the researches’ field. usually this selection is regarded as a matter of taste and as a result, there is no coordinated approach in the mentioned domain. sometimes, after signing the contract, the inappropriate selection became clear. the managers are in direct need of a pattern for selecting the contractors....

information accompanied with the technology supporting it is valuable asset in many organizations. as organizations are highly depended on it, implementing it effective governance is necessary for them. it governance areas affecting business are strategic alignment, risk management, performance management, resource management and providing value.  successful performances need a mix of structure...

Multiple criteria decision making (MCDM) is one of the most important fields of management science. It is related to several different goals or criteria that are to a certain extent in conflict with each other. The purpose of the decision making is to find the best or the most desirable alternatives. The complexity of the decision-making problem makes it impossible for a single decision maker t...

Generally, in real world multiple criteria decision making (MCDM) problems, we concern with inaccurate data. This paper transforms a fuzzy (FMCDM) problem into two linear programming models based on simple additive weighting method (SAW). The new calculate scores for each alternative optimistic and pessimistic viewpoints. To rank the alternatives, numerical value of arithmetic mean good score b...

Project portfolio selection is one of the most important decision-making problems for most organizations in project management and engineering management. Usually project portfolio decisions are very complicated when project interactions in terms of multiple selection criteria and preference information of decision makers (DMs) in terms of the criteria importance are taken into consideration si...

Aggregation of fuzzy relations in multicriteria decision making problems is considered. Pair wise comparisons between the alternatives by several criteria are given as fuzzy relations with definite properties. The weighted coefficients of the criteria are fuzzy numbers. The aim is to suggest models for aggregation of the fuzzy relations taking into account the criteria importance. The propertie...

one of important problems in supply chains management is supplier selection. in a company, there are massive data from various departments so that extracting knowledge from the company’s data is too complicated. many researchers have solved this problem by some methods like fuzzy set theory, goal programming, multi objective programming, the liner programming, mixed integer programming, analyti...