A new fuzzy mathematical programming model for supply chain planning under supply, process and demand uncertainty is proposed in this paper. A tactical supply chain planning problem has been formulated as a fuzzy mixed integer linear programming model where data are ill-known and modeled by...

A fuzzy if-then rule whose consequent part is a real number is referred to as a simplified fuzzy rule. Simplified fuzzy if-then rules have been widely used in function approximation problems due to no complicated defuzzification is required. The proposed simplified fuzzy rule-based...

This paper examines the role of the interest rate in investment decisions for firms in Taiwan. To reflect the human side of decision making and the uncertain nature of information provided, we employ fuzzy set theory and fuzzy logic to examine the nonlinear relationship between these two...

This paper presents new concepts and methodological tools to decide the investments that electric distribution utilities must perform under regulatory frameworks based on performance (Performance Based Regulation or PBR). The proposal is focused on short-term investments. In this work, the...

Accessing a hospital through the Emergency Department (ED) has become a subject of study for many researchers involved in pricing and resource allocation in healthcare. The research developed in this paper aims to measure the performance of the ED at Sfax Hospital as perceived by its patients....

In a bilevel decision problem, both the leader and the follower may have multiple objectives, and the coefficients involved in these objective functions or constraints may be described by some uncertain values. To express such a situation, a fuzzy multi-objective bilevel (FMOBL) programming...

This paper presents a fuzzy set-based approach to the evaluation of information technology (IT) projects. We assume a multi-criteria decision-making framework, where sets of general and domain-specific criteria are used to judge the relative performance of alternative technologies. The...

In this paper we deal with the problem of the knowledge under uncertain conditions. Since Plato definition in Teetetos, knowledge has been defined as a true belief and this has been thougt as a clear and distinct idea. So, if we have any kind of knowledge, it can´t be uncertain. We are trying...

This paper sets up a one period model for pricing an option with a fuzzy payoff. The option is written on an underlying asset that has a fuzzy price at the end of the period, modelled by means of triangular fuzzy numbers. The pricing methodology used is the standard one for pricing derivatives,...