hospitals as the centers that consume the most resource of health system, based on their function have difference performance and efficiency. the purpose of this study was to assess the efficiency of ahvaz hospitals using data envelopment analysis (dea) method. this study is a descriptive-analytic study that assessed the efficiency of teaching and nonteaching hospitals in ahvaz using dea in 200...

This paper employs a the variable returns to scale DEA model to take account of risky assets and estimate the operating efficiencies for the 21 domestic listed securities firms during the period 2005-2009. Evidence is found that on average the brokerage securities firms’ operating efficiencies are better than integrated securities firms. Evidence is also found that the technical inefficiency fr...

Super-efficiency data envelopment analysis (DEA) model is obtained when a decision making unit (DMU) under evaluation is excluded from the reference set. Because of the possible infeasibility of super-efficiency DEA model, the use of super-efficiency DEA model has been restricted to the situations where constant returns to scale (CRS) are assumed. It is shown that one of the input-oriented and ...

In this paper, we present a nonparametric comparative efficiency analysis of 179 communal public transport bus companies in Germany (1990-2004). We apply both deterministic data envelopment analysis (DEA) and bootstrapping to test the robustness of our estimates and to test the hypothesis of global and individual constant returns to scale. We find that the average technical efficiency of German...

This paper discusses the determination of returns to scale (RTS) in data envelopment analysis (DEA). Three basic RTS methods and their modi®cations are reviewed and the equivalence between these di€erent RTS methods is presented. The e€ect of multiple optimal DEA solutions on the RTS estimation is studied. It is shown that possible alternate optimal solutions only a€ect the estimation of RTS on...

Objective: The aims of this study were to determine energy efficiency and CO2 use pattern of grape production in Zanjan province, Iran by a non-parametric method of data envelopment analysis (DEA). Methods: Initial data were collected using a face to face questionnaire from 42 orchards in Abhar city of Zanjan province which is one of the most important centers of grape production in ...