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FUZZY ECONOMIC REVIEW

ISSN (print) 1136-0593 · ISSN (online) 2445-4192

Volume XVIII, Number 1. 2013

Causal structures in economics: fuzzyness and supervenience as ontological problems

Pablo Sebastián Garcia: Facultad de Ciencias Económicas de la Universidad de Buenos Aires, CONICET de Argentina

In his article "The Causal Structure of the World" (2010), Wesley Salmon observes that the work contained in the Reichenbach´s famous paper of 1925 broke the grund for a development that flourishes today. Reichenbach´s main concerns in "The Causal Structure of the World and the Difference Between Past and Future"…
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A generalized model of judgment and preference aggregation

Tabasam Rashid: Department Science and Humanities, Nacional University of Computer and Emerging Sciences, Faisal Town, Lahore, Pakistan

Some basic notions of fuzzy logic for trapezoidal fuzzy numbers are extended. Purpose of these extensions is to give a generalized model of judgment and preference aggregation by using trapezoidal fuzzy numbers. Examples are given to illustrate the proposed technique to optimize the problem by avoiding paradoxical outcomes without the…
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Financial responsibility. a temporal risk?

David Ceballos Hornero: Department of Economic, Financial and Actuarial Mathematics. Faculty of Economics and Business Administration, University of Barcelona

In Finance, when the context is particularly complex responsibility can be “invisible” from the perspective afforded by time. Hence, temporal risk can usefully be analyzed through the Greek concepts of time: Chronos (god of duration and sequential time), Kairos (god of opportunity and the moment of time) and Aeon (god…
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An assessment of abnormal returns and risk in socially responsible firms using fuzzy alpha jensen and fuzzy beta

Klender Aimer Cortez Alejandro: Universidad Autónoma de Nuevo León, Facultad de Contaduría Pública y Administración

Martha del Pilar Rodríguez García: Universidad Autónoma de Nuevo León, Facultad de Contaduría Pública y Administración

Berenice Méndez Sáenz: Universidad Autónoma de Nuevo León, Facultad de Contaduría Pública y Administración

This study analyzes the differences in financial performance and risk between sustainable firms and non-sustainable firms through the use of a fuzzy Jensen’s alpha and a fuzzy beta to measure abnormal returns and systematic risk, respectively. The sample consisted of 644 firms from OECD countries: Australia, Denmark, Spain, US, Finland,…
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