نتایج جستجو برای: directional measure

تعداد نتایج: 379699  

Journal: :international journal of data envelopment analysis 0
s. sohraiee

the non-differentiability and implicit definition of boundary of production possibility set (pps) in data envelopment analysis (dea) are two important difficulties for obtaining directional characteristics, including different elasticity measures and marginal rates of substitution. also, imposing weight restrictions in dea models have some shortcomings and misunderstandings. in this paper we ut...

Journal: :SSRN Electronic Journal 2014

Journal: :journal of linear and topological algebra (jlta) 0
a mirsalehy university putra malaysia. malaysia m rizam abu baker university putra malaysia. malaysia l soon lee universiti putra malaysia. malaysia gh. r jahanshahloo science and research branch. islamic azad university. iran

the efficiency measurement is a subject of great interest. the majority of studies on dea models have been carried out using radial or non-radial approaches regarding the application of dea for the efficiency measurement. this paper, based on the directional distance function, proposes a new generalized hybrid measure of efficiency under generalized returns to scale with the existence of both r...

Journal: :Journal of the Korean Data and Information Science Society 2016

The efficiency measurement is a subject of great interest. The majority of studies on DEA models have been carried out using radial or non-radial approaches regarding the application of DEA for the efficiency measurement. This paper, based on the directional distance function, proposes a new generalized hybrid measure of efficiency under generalized returns to scale with the existence of both r...

Journal: :international journal of data envelopment analysis 2014
e. mirzaie n. malekmohammadi

bankruptcy in the same amount of time and history is very rampant and therefore the vision of the future can be prevented. using data envelopment analysis (dea) and malmquist index can precise evaluating of the performances of many different kinds of decision making units (dmu) such as hospitals, universities, business firms, etc. in this paper, we will modify directional distance formulation o...

Journal: :Ergodic Theory and Dynamical Systems 2014

G. Tohidi S. Tohidnia

This study examines the productivity changes of decision making units in situation whereinput price vectors are varying between them and inputs are heterogeneous; that is a noncompetitivemarket. We present a directional measure of cost Malmquist productivity indexwhere incorporates the decision maker's preference over productivity change over time. Asimple numerical example is designed to illus...

Journal: :JNW 2013
Qiuyan Liu Peng Zhang Yuping Zhao

A novel energy efficient heterogeneous networks (HetNet) deployment scheme is proposed in this paper. Unlike the traditional deployment, we consider the scenario with picocell eNodeB (PeNB) at the edge instead of under the umbrella of macrocells in HetNet. In the novel scheme, one PeNB with directional antennas is deployed on the border of neighbor macrocells which is equivalent to a combiner o...

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