2018-06-20T07:21:50Z
http://ijo.iaurasht.ac.ir/?_action=export&rf=summon&issue=113031
Iranian Journal of Optimization
IJO
2588-5723
2588-5723
2014
06
2
A NEW APPROACH OF FUZZY NUMBERS WITH DIFFERENT SHAPES AND DEVIATION
A.
Ghanizadeh
N.
Parandin
In this paper, we propose a new method for fuzzy numbers. In this method, we assume that Ai= (ai1, ai2, ai3, ai4) is to be a fuzzy number. So, the convex combination of ai1 and ai2 and also the convex combination of ai3 and ai4 are obtained separately. Then, Mic and Mis that are to be the convex combinations and the standard deviation respectively we acquire them from these components. Finally, we can obtain ranking index (Mi) that is the convex combination of, Mic and Mis. At the end of paper, in one example, the proposed method is compared with other methods.
Fuzzy number
convex combination
standard deviation
2014
07
01
730
736
http://ijo.iaurasht.ac.ir/article_526829_4387ae04443c3fe52b0c60ad9beeaa47.pdf
Iranian Journal of Optimization
IJO
2588-5723
2588-5723
2014
06
2
Unweighted p-center problem on extended stars
Jafar
Fathali
Nader
Jafari Rad
Sadegh
Rahimi Sherbaf
An extended star is a tree which has only one vertex with degree larger than two. The -center problem in a graph asks to find a subset of the vertices of of cardinality such that the maximum weighted distances from to all vertices is minimized. In this paper we consider the -center problem on the unweighted extended stars, and present some properties to find solution.
Location theory
center problem
extended star
2014
07
01
737
744
http://ijo.iaurasht.ac.ir/article_526830_37ef51736b0d3ec69e1bab922522c3ec.pdf
Iranian Journal of Optimization
IJO
2588-5723
2588-5723
2014
06
2
Application of G'/G-expansion method to the (2+1)-dimensional dispersive long wave equation
Jafar
Biazar
Zainab
Ayati
In this work G'/G-expansion method has been employed to solve (2+1)-dimensional dispersive long wave equation. It is shown that G'/G-expansion method, with the help of symbolic computation, provides a very effective and powerful mathematical tool, for solving this equation.
G'/G-expansion method
(2+1)-dimensional dispersive long wave equation
2014
07
01
745
752
http://ijo.iaurasht.ac.ir/article_526831_5a32c146da7b46934bb4a19fbcc72b71.pdf