Fuzzy optimization
A Signed Distance Method for Solving Multi-Objective Transportation Problems in Fuzzy Environment

Hamiden Abdelwahed Khalifa

Articles in Press, Accepted Manuscript, Available Online from 30 October 2021

http://dx.doi.org/10.22105/riej.2021.281055.1203

Abstract
  fuzzy parameters represented as (α,β) interval-valued fuzzy numbers instead of the normal fuzzy numbers. Using the signed distance ranking, the problem converted into the corresponding crisp multi objective transportation problem. Then, the solution method introduced by [8] for solving the ...  Read More

A signed distance method for solving multi-objective transportation problems in fuzzy environment

H. Abd El-Wahed Khalifa

Volume 8, Issue 3 , September 2019, , Pages 274-282

http://dx.doi.org/10.22105/riej.2019.193041.1091

Abstract
  This paper aims to study the multi-objective transportation problem with fuzzy parameters. These fuzzy parameters represented as (α, β) interval-valued fuzzy numbers instead of the normal fuzzy numbers. Using the signed distance ranking, the problem converted into the corresponding crisp ...  Read More

Game theory
On solving two-person zero-sum fuzzy matrix games via linear programming approach

H. A. Khalifa

Volume 8, Issue 1 , April 2019, , Pages 17-27

http://dx.doi.org/10.22105/riej.2019.170067.1075

Abstract
  In this paper, a two-person zero-sum matrix game with fuzzy numbers payoff is introduced. Using the fuzzy number comparison introduced by Rouben's method (1991), the fuzzy payoff is converted into the corresponding deterministic payoff. Then, for each player, a linear programming problem is formulated. ...  Read More