occupational accidents severely deteriorate human capital, and hence negatively affect the productivity andcompetitiveness. but despite these negative points, there are still deficiencies in safety managementperformance and indicators. therefore the safety issue needs an active management. for this reason, thewriter has proposed an approach to evaluate organizations based on safety management. ...

Abstract In the literature, fuzzy arithmetic approach has been used for solving data envelopment analysis (DEA) model in presence of undesirable outputs by use ideal and anti-ideal decision-making units (DMUs). order to obtain best worst efficiencies, such an allows each DMU choose most favorable weights via optimizing its own evaluation that needs solve various mathematical models. On one hand...

The paper took Guang’an City in Sichuan Province of China as a research region, and it built an evaluation index system based on 14 indices according to four criteria, namely, ecological background, structure, benefits, stress. Delphi algorithm entropy weight (a combination subjective objective methods) were used calculate the value each index, ideal point model was value. grade classified, pri...

In Yoshida [11], a method to find ideal points and boundary slopes from an ideal triangulation was introduced. But the method only gives a necessary condition which the valuation corresponding to an ideal point satisfies. We give a simple sufficient condition for the existence of the corresponding ideal points.