نتایج جستجو برای: relative efficiency
تعداد نتایج: 759524 فیلتر نتایج به سال:
در مدل های استاندارد dea فرض شده است که مجموع خروجی (ورودی) تابعی خطی از هر خروجی (ورودی) می باشد. در بسیاری مواقع قیمت گذاری خطی ممکن است به اندازه ی کافی تفاوت های میان یک dmu و dmu ی دیگر را بازتاب نکند. از این رو کوک و زو در مقاله ی (piecewise linear output measures in dea) مدل قطعه ای خطی dea را ارائه کردند. در سال 2010، دکتر حسین زاده، رستمی و مقدس در مقاله ی (modified piecewise linear de...
control of stored-product insect by gamma radiation could be enhanced by other possible techniques such as essential oils as effective alternatives to chemical insecticides. in this study, the efficiency of gamma radiation combined with perovskia atriplicifolia (benth) was verified to assess their enhanced antifeedant effect against the tribolium castaneum (herbst). flour disc bioassay was empl...
A single vacuum tube based solar cooker has high energy and exergy efficiency, and is capable of achieving cooking temperatures as high as 250 C. The reason for high energy and exergy efficiencies of this solar cooker is the high achievable concentration ratios of 15e20, which are not possible with multiple vacuum tube based solar cookers. In this paper, a comparative study has been carried out...
Background and Objectives : Authorities of organizations need a performance appraisal system for planning, controlling and improving the efficiency of their organizations. In this research, the staff relative efficiency of health centers in Yazd province has been appraised by using DEA (Data Envelopment Analysis) models. Materials and Methods : In this descriptive study, the technique of ga...
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