Presenting a Fuzzy Model to evaluate the rate of Applying Lean Thinking from the Manufacturer's Viewpoint (Case Study: Shoe-Manufacturing Companies of Tabriz)

Lean thinking is a method of managing organizations in order to improve the productivity, efficiency, and quality of the products and services. Accordingly, the main purpose of the present research is to examine and present a model for the evaluation of the rate of applying lean thinking from the viewpoint of the manufacturer through the use of fuzzy mathematics. The statistical population includes all the shoe manufacturers of Tabriz. In order to measure each of the indices of lean thinking, the researchers used a questionnaire. The validity of the questionnaire was confirmed through content validity, and its reliability was assessed by using Cronbach's Alpha coefficient .To specify the score of lean thinking and to present the model, fuzzy logic was used in MATLAB software. The results indicate that the index "value" is in the best state, and the index "pull" is in the worst state. Finally, after drawing the conclusion, the researchers presented the necessary guidelines to the managers.