The thesis is accomplished with the assistance of many people which may not be mentioned at all. Firstly, I would like to thank you very much my advisor; Asst.Prof. PiyakarnTeartisup that provide the knowledge, advice, suggestion, checking and correcting my thesis with attention in every step. Thanks also to my co-advisor; Asst. Prof.SuwaleeWorakhunpiset and Dr.BoripatSiriaroonrat for advice and guidance to support in the operation of research.