| Summary: | 碩士 === 大葉大學 === 工業工程與科技管理學系碩士在職專班 === 96 === After Taiwan’s attending the to World Trade Organization (WTO), the foreign oil company will enter engine to the oil market easily in Taiwan, consider the numerous oil companies in Taiwan , this competition becomes much stronger than before ,it will be necessary to analyze consumers’ behavior of traditional surveys buying engine oil in order to promote and sell this product.
However, normal consumers don’t understand engine oil characteristics ; thus traditional surveys , it are not reliable on. This research chooses the professional engineers for survey.
Since generalized fuzzy numbers are popularly applied on data analysis、artificial intelligence、decision making widely etc.. Now, we use Dr.Chen’s（1985）Second Function Principle（STP）as the operation of general fuzzy numbers in the expression generalized fuzzy numbers of multiple criteria decision making, We use Dr.Chen’s （1998）Graded Mean Integration Representation Method（GMIRM）to defuzzify the global evaluation. To select a best Engine Oil Providers、We use Dr.Chens（1998）Graded Mean Integration Ranking Method（GMIRM）And oil provider’s advantages and disadvamtages are analyzed.
Finally, it is our destination on this research for the oil company ,motor repair shop and consumer to choose and purchase the good engine oil.
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