Proceedings from the Joint International Plasma Symposium of the 6th Asia-Pacific Conference on Plasma Science & Technology (6th APCPST), the 15th Symposium on Plasma Science for Materials (15th SPSM), & the 11th Korea Accelerator & Plasma Research Association Annual Conference (11th KAPRA), Jeju Island, Korea, 1-4 July, 2002 - Preface