meeting. Some of the discussion results are also included. From these papers, readers can get a clear image of the actual meeting. I would like to express my great appreciation of the co organizers, Toyoaki Nishida, Takao Terano and Fumio Hattori and all the participants who contributed to the meeting. I also wish to thank the local arrangement people of the meeting: they are Toshikazu Nishimura, Hirofumi Yamaki, Hideyuki Nakanishi, Keiki Takadama, Shoko Miyagawa and Yoko Kubota. Special thanks to Hirofumi Yamaki and Masayuki Okamoto, who did tremendous work for editing this volume. I also thank Andre Durand for a discussion on the ter co mmmu nityware. Though we have independently used this term, it appears that the term is a trademark of Durand Communication Inc.