???????q??w
???N??w??????
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?y?@???@???@?F?@???Q?@???@?i????????j
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@???m?i????w?j
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@matsunami@fwu.ac.jp
?@?@?@?@?@?@?@?@?@?@?@?@?@?@ ?? ?? ?? ?? ?F?@?X?|?[?c?j?@?X?|?[?c?l??w
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?X?|?[?c?????_?@???N??w
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?S????????F?@ (2007?N?x?j
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?y?S?w?K?C?z
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@ ???N?X?|?[?c???K?T?i?????j
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@ ???N?X?|?[?c???K?T ?i?p???j
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@ ???N?X?|?[?c???K?T ?i??????N?R?[?X?j
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@ ???N?X?|?[?c???K?U?i????????j
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@ ???N?X?|?[?c???K?U?i?h?{???N?j
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@ ???N?X?|?[?c???K?U?i????????j
???N?X?|?[?c???K?U?i?E?C???^?[?X?|?[?c???K?i?X?L?[?E?X?m?[?{?[?h?j?j
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@ ???[?~?[?i?X?|?[?c?l??w?j
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@ ?????u???F?@??w??????E???i?u????C??j
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@ ?????u???F?@????????
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@ ?i2003?`2006?N?x?i??L??O?j?j
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@ ?????u???F ?l????w????
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@ ?l??????[?~?i?[???i?X?|?[?c?????_?j??N
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@???
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@
?@?@?@?@?@?@?@?@?@?@?@?@?@?@??v???????
?@?@?@?@?@?@?@?@?@?@?@?@?@?@
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?v???t?B?[??
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?衼@??@???@??
?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@?@???{?X?|?[?c?l??w???W???????? (2007?N3??29?E30???I???j?@?@?@
?@?@?@?@?@?@?@?@
2007?N10??23???X?V
?@?@?@?@?@?@