$B;T@n!wK-66$G$9!#(B $B$H$F$b4pK\E*$J$3$H$G%"%l$J$s$G$9$,!"(B $B%+%a%i$r=D9=?^$G9=$($k;~!"(B $B@5$7$$$N$O1&e$G$7$g$&$+2<$G$7$g$&$+!#(B FT2, FM2$B$N$H$-$O1& e$K$J$C$F$$$^$9!#(B $B%0%j%C%W$,1&$J$N$G%V%i2<$2$k$[$&$,DcB.%7%c%C%?!<$G(B $B%V%l$K$/$h$&$J5$$,$7$F!#(B -- $B;T@n!!<~0l(B (Shuichi ICHIKAWA) <ichikawa@tutkie.tut.ac.jp>