A primal index of productivity change is introduced which decomposes exactly in three components: technical change, technical efficiency change and average scale economies (radial scale change). The proposed index is invariant to movement along indifference surfaces and it collapses to the Malmquist index if the technology is locally constant returns to scale. It is the best linear approximatio...

The energy transition is aimed to take advantage of the operational flexibility hydropower extend integration intermittent renewable sources. Consequently, hydrogenerators will have operate in regimes far away from their designed best-point operation. In order accurately assess impact, this paper presents a useful approach determine overall operating efficiency synchronous generators under An a...

The aim of this study is to develop a scale with good psychometric properties measure the Social Adjustment kindergarten children. A consisting (67) items was developed three dimensions: social awareness, facilitation, and theory mind. applied sample (162) children an average age (M=5.41) standard deviation (SD=0.34). results indicated degree validity for scale's scores using content construct ...

analyzing the efficiency of agricultural productions plays an important role in raising their productions and performances without spending extra cost. in this studythis study evaluated were the interval evaluated e fficiency and no efficiency of interval for greenhouseof greenhouse cucumber producers somefor some subsectors of sistan region. this research was donethe study conducted on the bas...

pressurized irrigation is a recent development that consumes more energy for the pressure produced. in thisstudy, energy consumption, waste and efficiency were investigated at a diesel and electrical sprinklerirrigation pumping plant in some fields in hamadan province during 2007-8. nebraska performance criteria(npc) were used to compare sprinkler irrigation pumping plant performance. the resul...

this research identifies returns to scale (rts) of efficient decision making units (dmus) with desirable (good) and undesirable (bad) inputs and outputs by presenting a new dea (data envelopment analysis) approach. in this study, we first introduce a new input-output oriented model to determine efficient dmus in the presence of undesirable factors and then, returns to scale of these dmus are es...