Fuzzy numbers are used in various fields such as fuzzy process methods, decision control theory, problems involving making, and systematic reasoning. systems, including set theory. In this paper, pentagonal variables (PFV) to formulate linear programming (LPP). Here, we will concentrate on an approach addressing these issues that uses the simplex technique (SM). Linear (LPP) with (PFN) two basi...

In this paper we propose a simple non-parametric model for multiple crite-ria supplier selection problem. The proposed model does not generate a zeroweight for a certain criterion and ranks the suppliers without solving the modeln times (one linear programming (LP) for each supplier) and therefore allowsthe manager to get faster results. The methodology is illustrated using anexample.

In this short paper, the label printing problem (LPP) is investigated. The LPP can be formulated as a nonlinear integer programming problem and it aims to minimize the total wastage of labels under a fixed number of templates with subject to the minimal required quantities of various labels. Since the LPP is NP-hard and its feasible region is pretty large, it is usually difficult to solve. In t...

In supply chain management process, the firm select best supplier takes the competitive advantage to other companies. Thus, supplier selection is an important issue and with the multiple criteria decisionmaking approach, the supplier selection problem includes both tangible and intangible factors. This paper is aimed to present an integrated fuzzy and linear programming approach to the problem....

Supplier evaluation and selection is a critical decision process for companies in order to gain competitive advantage. Decision models focusing on risk minimization have recently received increasing attention in supplier selection literature. In this paper, risk factors, which incorporate qualitative as well as quantitative data, are employed in fuzzy data envelopment analysis for obtaining eff...

Lichen planus pemphigoides (LPP) is a rare autoimmune blistering disease that is characterized by the development of vesico-bullous skin lesions in patients with lichen planus. The histopathology of LPP reveals a sub_epidermal blister with linear deposition of IgG and /or C3 along the dermal_epidermal junction (DEJ) upon direct immunofluorescence (DIF). We hereunder describe a case of lichen pl...

Background: In the literature, there exists several approaches to address multi-objective linear fractional programming problem (MOLFPP). However, is a drawback these methods.Aim: This paper presents an efficient method treating MOLFPP.Methodology: To construct our approach,the membership functions of objectives, suitable non-linear variable transformations, and max-min technique are used.Resul...

one of important problems in supply chains management is supplier selection. in a company, there are massive data from various departments so that extracting knowledge from the company’s data is too complicated. many researchers have solved this problem by some methods like fuzzy set theory, goal programming, multi objective programming, the liner programming, mixed integer programming, analyti...

due to the importance of supplier selection issue in supply chain management (scm) and ,also,  the increasing tendency of organizations to their social responsibilities, in this paper, we survey the supplier selection issue as a multi objective problem while considering the factor of corporate social responsibility (csr) as a mathematical parameter. the purpose of this paper is to design a mode...