west azerbaijan province is the major producer of sugar beet in iran. to reach the goals ‎of self-sufficiency in the country and competitiveness in the market, increasing the production ‎of sugar beet in this province through enhancing the efficiency of producers could have an ‎important contribution. the purpose of this research was to measure the efficiency of sugar ‎beet producers in west az...

The infeasibility problem in traditional super efficiency models has been well established. A generalization of traditional inputor output-oriented super efficiency models, the directional distance function also suffers from infeasibility and related problems. The hyperbolic-oriented efficiency measure provides an alternative to the input-oriented, output-oriented, and directional efficiency me...

A coordinate plane representation of the resource requirements of digital modulation methods is presented, and an overall resource efficiency measure is proposed. This measure can be used for the comparison of digital modulation methods and the evaluation of an emerging modulation technique. Several typical digital modulation methods are compared based on this measure to show its validity. key ...

The purpose of this investigation was to correlate oropharyngeal swallow efficiency (OPSE), a summary measure of swallowing function, with its component variables. Videofluorographic assessment of oropharyngeal swallow resulted in the measurement of multiple measures of swallow function in five patient populations and a group of normal volunteers. In total, 759 swallows were studied in 149 pers...

Improving energy efficiency has been widely regarded as one of the most cost-effective ways to improve sustainability and mitigate climate change. This paper presents a sequential slack-based efficiency measure (SSBM) application to model total-factor energy efficiency with undesirable outputs. This approach simultaneously takes into account the sequential environmental technology, total input ...

In DEA, we have two measures of technical efficiency with different characteristics: radial and non-radial. In this paper we compile them into a composite model called “epsilon-based measure (EBM).” For this purpose we introduce two parameters which connect radial and non-radial models. These two parameters are obtained from the newly defined affinity index between inputs or outputs along with ...

In this paper we try to introduce a new approach and study the notion of efficiency under a multi objectives linear programming problem in the university by using analysis of hierarchy process (AHP)‎. ‎To this end‎, ‎we first extract some effective parameters due to efficiency offices in university and then prioritized these parameters by the AHP method‎. ‎Hence‎, ‎we could classify the most im...

A metafrontier slack-based efficiency measure is presented to measure environmental efficiency for various regions in China. The objective of the new approach is to investigate the change of environmental efficiency while incorporating group heterogeneities and all variable slack and environmental pollutants into environmental efficiency analysis. Global production technology is used to improve...

   Measuring the performance of a production system has been an important task in management for purposes of control, planning, etc. Lord Kelvin said :“When you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meager and unsatisfactory kind.” Hence, manag...