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دانلود رایکان مقاله انگلیسی ISI با موضوع مقدار ترکیبی یکپارچه قضاوت های فازی و روش شناسی برنامه ریزی غیر خطی

عنوان فارسی مقاله:

مقدار ترکیبی یکپارچه قضاوت های فازی و روش شناسی برنامه ریزی غیر خطی برای رتبه بندی الگو های طرح تسهیلات

عنوان انگلیسی مقاله:

An integrated synthetic value of fuzzy judgments and nonlinear programming methodology for ranking the facility layout patterns

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2. The proposed model

Fig. 1 represents the framework of the proposed model. As we see, at first the input data needed for CRAFT software regarding to the departments and the relations between them. After entering the data and by implementing program, several FLPs with their related total cost of handling material (TCHM) will be achieved as the output. In fact, these costs are the performance measures of the first intended quantitative criterion. Since in a produced FLP, each department is printed in different numbers of digits, due to different areas, it is possible that width and length of internal horizontal and vertical walls of factory alter, respectively, during the exchanging the location of two departments. Such an alteration of dimensions will be caused the change of initial (construction) investment. Hence, this quantitative criterion will certainly effect the evaluations of a FLP by designers. On the other hand, it may be noticeable from the designers’ viewpoint that in addition to the quantitative criteria, other significant qualitative criteria such as flexibility, facilitation of handling (FH) and accessibility, can influence the arrangement appraisal of a FLP. In this study, we use SVFJ approach in order to determine the performance measures of such criteria. It is performed via assessments of different FLPs based on designers’ opinion. After we achieved the performance measures against all FLPs for both criteria, an NLP model is proposed to rank FLPs based on these measures and the final design is chosen with the higher score as the optimum FLP. Before introducing the above-mentioned methodology, the concept of fuzzy set theory should be first explained.