this paper has revised the combined model of chan & qi with supply chain operations reference (scor) .this combined model with hierarchical structure, has three levels and seven criteria that some criteria are quantitative (cost, use of source) and others of them are qualitative (quality, flexibility, tangible, validity and innovation). in order to improvement of this model, this paper has comb...

In this paper, a fuzzy production inventory model with resalable returns has been analysed in an imprecise and uncertain environment by considering the cost and revenue parameters as trapezoidal fuzzy numbers. The main objective is to determine the optimal fuzzy production lotsize which maximizes the expected profit where the products leftout at the end of the period are salvaged and demands wh...

Abstract In this Paper a multi item EOQ model with stock dependent demand for deteriorating items is considered in fuzzy environment. Inventory costs such as holding cost and setup cost have been represented by exponential membership function and profit, deteriorating rate and total investment constraint are represented by linear membership functions. The model has been solved by fuzzy non-line...

In many applications of linear programming, the lack exact information results in various problems. Nevertheless, these types problems can be handled using fuzzy programming. This study aims to compare different ranking functions for solving programming which coefficients objective function (the cost vector) are numbers. A numerical example is introduced from field tourism and then solved five ...

This paper presents an analysis of student’s performance using Fuzzy Systems for a development of Intelligent Planning System (INPLANS) based on Student Performance for Academic Advisory Domain using Fuzzy Systems, Neural Networks and Genetic Algorithms. This analysis is the first step in developing INPLANS which will help the academic advisory in making plan and making the best decision for th...

Estimating the cost of software is a complex process for almost all engineering companies. Uncertainties about development method, design, estimation process, data, and processing affect the accuracy of estimation. Underestimation results in fewer resources being committed than the project really needs, an unrealistic schedule, and low quality outputs. On the other hand, overestimation wastes r...

This paper introduces a fuzzy decision-making algorithm for robot behavior coordination. The algorithm belongs to the arbitration class of behavior coordination mechanisms, under which only one behavior is running at a time. However, it is possible to use a hierarchical decision mechanism for hierarchical behaviors without interference between hierarchical levels. With this fuzzy decision metho...

This paper focuses on an optimal disposal mechanism by extending the work of Tripathy et al. [11] to consider the system cost as fuzzy under flexibility and reliability criteria. It has been observed that by using a non-random optimization technique the derived disposal plan may result in no substantial difference in the system cost between the crisp and fuzzy model. Various numerical analyses ...

Multi-objective inventory models of deteriorating items have been developed with vague and imprecise information about available storage area. Here, the objectives are (i) to maximize the profit, (ii) to minimize the wastage cost due to deterioration and (iii) to minimize the total production cost. These objectives are also fuzzy in nature. In these models, production rate is a decision variabl...