Fukuyama [Fukuyama, H., 2000. Returns to scale and scale elasticity in data envelopment analysis. European Journal of Operational Research 125, 93-112] provided some characterizations of scale elasticity and returns to scale in DEA. In this paper, we present some counterexamples and comments to the main lemma of the afore-mentioned paper, based on which Fukuyama's idea has been built. (C) 2007 Elsevier B.V. All rights reserved.
机构:
Islamic Azad Univ, Dept Appl Math, Coll Basic Sci, Yadegar e Imam Khomeini RAH Shahr e Rey Branch, Tehran, IranIslamic Azad Univ, Dept Appl Math, Coll Basic Sci, Yadegar e Imam Khomeini RAH Shahr e Rey Branch, Tehran, Iran
Khoveyni, Mohammad
Eslami, Robabeh
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Islamic Azad Univ, Fac Engn & Technol, Dept Math, South Tehran Branch, Tehran, IranIslamic Azad Univ, Dept Appl Math, Coll Basic Sci, Yadegar e Imam Khomeini RAH Shahr e Rey Branch, Tehran, Iran
Eslami, Robabeh
Yang, Guo-liang
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Chinese Acad Sci, Inst Policy & Management, Beijing 100190, Peoples R ChinaIslamic Azad Univ, Dept Appl Math, Coll Basic Sci, Yadegar e Imam Khomeini RAH Shahr e Rey Branch, Tehran, Iran
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Eastern Mediterranean Univ, Dept Ind Engn, Gazimagusa, North Cyprus, TurkeyEastern Mediterranean Univ, Dept Ind Engn, Gazimagusa, North Cyprus, Turkey
Daneshvar, Sahand
Izbirak, Gokhan
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Eastern Mediterranean Univ, Dept Ind Engn, Gazimagusa, North Cyprus, TurkeyEastern Mediterranean Univ, Dept Ind Engn, Gazimagusa, North Cyprus, Turkey
Izbirak, Gokhan
Javadi, Alireza
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Islamic Azad Univ, Tabriz Branch, Dept Math, Tabriz, IranEastern Mediterranean Univ, Dept Ind Engn, Gazimagusa, North Cyprus, Turkey