Our web site has been started at 1997. From 1997 to 2002, we utilized the server for academic societies of National Informatics Institute. At September 2002, we moved to our own domain. The top page just before the moving is [this]. This was principally designed by Mr. Jiro Amano (Fac. Engineering, Tottori Univ.) and later slightly modified. With changing the server, we held a contest of new design of the top page, and the present one created by Mr. Masaru Fujii (Mitsubishi Chemical Corp.) was adopted.