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Qualitative assessments and optimal decision under uncertainty using rectangular fuzzy numbers

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  • Ciprian Ionel ALECU

    ()
    (Romanian Academy Branch of Iasi, Postdoctoral Grant Recipient POSDRU ID/89/1.5/S/56815, ?Gh. Zane? Institute of Economic and Social Researches, Iasi , Romania)

Abstract

In crisis situations, uncertainty emerges as a distinct phenomenon, in which case we face both the ineffectiveness of most theoretical models of decision-making and the inaccuracy and incompleteness of available information. It is therefore necessary to intensify theoretical efforts and to apply interdisciplinary approaches and transfers of methods in order to construct a set of procedures and techniques that should contribute to curbing this phenomenon in decision-making processes. The transition from the state of crisis to the state of opportunity becomes the ground on which technocratic, structural, cultural and political approaches make a difference in managing. The qualitative analysis of the level of uncertainty provides an optimal insight into the best management techniques and methods that may contribute to achieving development objectives under crisis conditions. To conduct such an assessment process, we propose the use of rectangular fuzzy numbers. In this paper, first we develop a personal analysis of the notion of rectangular fuzzy numbers with an associated variable center of gravity and specific mathematical operations. Our research continues by the theoretical and applicable development of the "optimistic method (max-max)". Acknowledgement This paper is supported by the Sectoral Operational Programme Human Resources Development (SOP HRD), financed from the European Social Fund and by the Romanian Government under the contract number POSDRU/89/1.5/S/56815.

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File URL: http://ices.ro/RePEc/zan/ygzier/2011/2011_2_01_Anuar_Tomul20_Alecu.pdf
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Bibliographic Info

Article provided by Gheorghe Zane Institute for Economic and Social Research ( from THE ROMANIAN ACADEMY, JASSY BRANCH) in its journal THE YEARBOOK OF THE ?GH. ZANE? INSTITUTE OF ECONOMIC RESEARCHES.

Volume (Year): 20 (2011)
Issue (Month): 2 ()
Pages: 95-102

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Handle: RePEc:zan:ygzier:v:20:y:2011:i:2:p:95-102

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Keywords: qualitative assessment; rectangular fuzzy numbers ; "optimistic method (max-max)"; indicators of centers of weight associated to fuzzy number; decision-making;

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  1. Ciprian Ionel ALECU, 2011. "Epistemic analysis of methods using elementary triangular fuzzy numbers with associated indicators," THE YEARBOOK OF THE “GH. ZANE” INSTITUTE OF ECONOMIC RESEARCHES, Gheorghe Zane Institute for Economic and Social Research ( from THE ROMANIAN ACADEMY, JASSY BRANCH), vol. 20(1), pages 5-12.
  2. Ciprian Ionel ALECU, 2011. "Considerations On The Development Of Political Methods For Absorbing Uncertainty," EuroEconomica, Danubius University of Galati, issue 5(30), pages 39-47, December.
  3. Ciprian Ionel Alecu & Octavian Jaba, 2009. "Unconventional methods of strategic distribution of the incertitude," THE YEARBOOK OF THE “GH. ZANE” INSTITUTE OF ECONOMIC RESEARCHES, Gheorghe Zane Institute for Economic and Social Research ( from THE ROMANIAN ACADEMY, JASSY BRANCH), vol. 18, pages 15-28.
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