data envelopment analysis (dea) technique was used to analyze the efficiency of farmers, discriminate efficient farms from inefficient ones and to identify wasteful uses of energy for orange producers in khouzestan region. data were collected from 125 watermelon producer by using a face-to-face questionnaire. results revealed that total energy consumption in plasticulture and open-field waterme...

Numerous studies have found that US commercial banks are quite inefficient, and we find that, on average, banks became more technically inefficient between 1984 and 1993. Our analysis of productivity change, however, shows that technological improvements adopted by a few banks pushed out the efficient frontier, and that, on average, commercial banks experienced productivity gains. For banks wit...

One of the most common approaches for multiobjective optimization is to generate the whole or partial efficient frontier and then decide about the preferred solution in a higher-level decision-making process. In this paper, a new method for generating the efficient frontier for multiobjective problems is developed, called the diversity maximization approach (DMA). This approach is capable of so...

In this paper, an extension of the generalized data envelopment analysis (GDEA) model has been introduced. In this generalization different cases of production possibility set (PPS) of the extended generalized data envelopment analysis (EGDEA) model are investigated. The proposed EGDEA model is used to evaluate decision’s making units (DMUs) either with full convexity assumption imposed on inpu...

Original data envelopment analysis models treat decision-making units as independent entities. This feature of data envelopment analysis results in significant diversity in input and output weights, which is irrelevant and problematic from the managerial point of view. In this regard, several methodologies have been developed to measure the efficiency scores based on common weights. Specificall...

This study compared technical efficiency of mandarin fish and clown fish production in Cross River State, Nigeria. Data were obtained from 240 respondents including 120 mandarin fish farmers and 120 clown fish farmers, which were randomly selected from villages in the study area by means of structured and semi-structured questionnaire. Data collected were analyzed using descriptive statistics a...

introduction: to assess efficiency as a relative concept, the difference between real and expected values must be determined by comparing the productivity of economic units of industry and the efficiency in potential production conditions. as economic units, hospitals need to utilize efficiency analysis in order to make optimal use of their available resources. therefore, the present study comp...