????$B&N(B??

???	?????
???	$(D*@+B*S*S(B ???$B!/$(D"B"p(B?$(D**)!$B!r(B $(D*3"n"D*?"B"p(B??$(D*3*d(B $(D*A*$*1$B!x(B
????	$(D*B+"(B?$B!`$(D*)*c"p*2(B?$(D*X)!"m(B?$(D+3*4*P$B!-(B?$(D"p+R*?*P"p"p"p"D(B???$(D+!(B?$(D+1(B?$(D+2*!+d**)A"p*B*A*#"p)N*4"1(B?$(D+b"p*B*.$B!x(B?$B!^(B
???	MIRU2000
Vol.	1
?????	pp.295-300
???	2000?7??

????????