Time filter

Source Type

Salahshour S.,Islamic Azad University at Mobarakeh | Allahviranloo T.,Islamic Azad University at Tehran
Soft Computing | Year: 2013

A natural way to model dynamic systems under uncertainty is to use fuzzy initial value problems (FIVPs) and related uncertain systems. In this paper, we express the fuzzy Laplace transform and then some of its well-known properties are investigated. In addition, an existence theorem is given for fuzzy-valued function which possess the fuzzy Laplace transform. Consequently, we investigate the solutions of FIVPs and the solutions in state-space description of fuzzy linear continuous-time systems under generalized H-differentiability as two new applications of fuzzy Laplace transforms. Finally, some examples are given to show the efficiency of the proposed method. © 2012 Springer-Verlag.

Samimi P.,University of Technology Malaysia | Samimi P.,Islamic Azad University at Mobarakeh | Jenatabadi H.S.,University of Malaya
PLoS ONE | Year: 2014

This study was carried out to investigate the effect of economic globalization on economic growth in OIC countries. Furthermore, the study examined the effect of complementary policies on the growth effect of globalization. It also investigated whether the growth effect of globalization depends on the income level of countries. Utilizing the generalized method of moments (GMM) estimator within the framework of a dynamic panel data approach, we provide evidence which suggests that economic globalization has statistically significant impact on economic growth in OIC countries. The results indicate that this positive effect is increased in the countries with better-educated workers and well-developed financial systems. Our finding shows that the effect of economic globalization also depends on the country's level of income. High and middle-income countries benefit from globalization whereas low-income countries do not gain from it. In fact, the countries should receive the appropriate income level to be benefited from globalization. Economic globalization not only directly promotes growth but also indirectly does so via complementary reforms. © 2014 Samimi, Jenatabadi.

Allahviranloo T.,Islamic Azad University at Tehran | Salahshour S.,Islamic Azad University at Mobarakeh
Soft Computing | Year: 2011

In this paper, we study the numerical method for solving hybrid fuzzy differential using Euler method under generalized Hukuhara differentiability. To this end, we determine the Euler method for both cases of H-differentiability. Also, the convergence of the proposed method is studied and the characteristic theorem is given for both cases. Finally, some numerical examples are given to illustrate the efficiency of the proposed method under generalized Hukuhara differentiability instead of suing Hukuhara differentiability. © 2010 Springer-Verlag.

Hadi-Vencheh A.,Islamic Azad University at Khorasgan | Mokhtarian M.N.,Islamic Azad University at Mobarakeh
Expert Systems with Applications | Year: 2011

This paper proposes a new fuzzy MCDM (FMCDM) approach based on centroid of fuzzy numbers for ranking of alternatives. The FMCDM approach allows decision makers (DMs) to evaluate alternatives using linguistic terms such as very high, high, slightly high, medium, slightly low, low, very low or none rather than precise numerical values, allows them to express their opinions independently, and also provides an algorithm to aggregate the assessments of alternatives. Three numerical examples are investigated using the FMCDM approach to illustrate its applications. It is shown that the FMCDM approach offers a flexible, practical and effective way of group decision making. © 2010 Elsevier Ltd. All rights reserved.

Allahviranloo T.,Islamic Azad University at Tehran | Khezerloo M.,Islamic Azad University at Tehran | Sedaghatfar O.,Islamic Azad University at Tehran | Salahshour S.,Islamic Azad University at Mobarakeh
Neural Computing and Applications | Year: 2013

In this paper, we study existence and uniqueness of solutions of second-order fuzzy integro-differential equations with fuzzy kernel under strongly generalized differentiability. To this end, four cases are considered to show the existence of the fuzzy solution mentioned equation. Some theorems are proved, and the uniqueness of the fuzzy solution is discussed step by step. Finally, the illustrated examples are solved to investigate the conditions of theorems. © 2012 Springer-Verlag London Limited.

Discover hidden collaborations