Homa Ghasemi, Dr Mostafa Dinmohammadi, Dr Esmaeil Najafi,
Volume 2, Issue 6 (12-2011)
Abstract
Data envelopment analysis (DEA) estimates the relative performance of decision making units (DMUs). This paper uses the idea of the Analytical hierarchy process (AHP) method and fuzzy set theory to modify the model of DEA which can be used to evaluate the performance of business units. In this paper, a new method has been proposed for estimating the performance of DMUs with interval data and weights of data. The models proposed in previous studies have interval data or interval weights of data, so the proposed model has more flexibility than previous studies . Thus, innovation has been done theoretically and the experimental part is for testing the theory. Finally, a method is introduced for ranking the DMUs by computed performance. In order to prove the applicability of the proposed method, a case study for ranking of some Iranian automotive companies products is given. The model results indicate that the proposed model will be useful for practical problems, especially when the number of choices is limited.
Ali Asghar Salem, Morteza Niazi,
Volume 8, Issue 28 (7-2017)
Abstract
Religious tourism is very important either in Iran and in the international level. In this study dynamic linear almost ideal demand system and formulas of price and income elasticity were applied to estimate demand for religious trips. To this end, micro data of household budget prepared by Census center of Iran for 1991-2011 has been applied in this study.
According to the results, income elasticity of religious trips is about 0/42 , that means one percent increase in income will lead to an increase of 0/4 percent in demand for religious trips. Also the price elasticity of demand in all commodity groups is negative and price elasticity of religious trips is about -0/98.
