This thesis has been accomplished well by a kindly assist from the following people. I do not have words to adequately describe my deep gratitude for all they have provided me.
I have benefited greatly from the mentoring and comments received from Assistant Professor Dr.Supavee Sirinakaraporn and Assistant Professor Dr.Jirawat Vongphantuset.
Thanks to Professor Eakachart Joneurairatana and Associate Professor Pairote Chamunee for the the suggestion in theory of art and design knowledge.
Thanks to Professor Emeritus Sermsak Narkbua for the guidance in pottery knowledge.
Thanks to the villager of Chang Tai, Chiang Rai for courtesy research outreach.
Thanks to, the Department of ceramics, Faculty of Decoration, Silpakorn University for the warmest places for experimentation research
Thanks to Suan Sunandha Rajabhat University for the scholarships used in this research.
Moreover, thank you for the love, support, and encouragement I received from my parents including my teachers as well as everyone always help. I do not have words to adequately describe my deep gratitude for all they have provided me, though I hope to show them in the years to come.