yyĉRyvSbV[>yy͑'YyvP[yv bV[6qyf[Wёyv bw萧~͑'Yyv0 5 NsLNeg yx]\Oe%N͑ݏĉݏl~U_0 Yef[QeQagN 1 bbǏ,gy uW@x0xvz uf[MO03uN{[te;NǏ2 N N z0 2 3uNNsLNegkf[t^khTs^GWc\4 eN+T|pe Yef[(ϑ^NNON,gbYe^s^GW4ls^0NsL g 3uNYlQ>mYuf[1 0 *NgN N RYuf[ gNZPYef[8h0 3 SR N]W{QǏ3 TN NUxXxvz u0 4 NsLNeg e͑'YYef[NEe0 Yef[:N;NW 1 0f[/gQeQagN 1 3uN(W@bNNvf[yWQ^S_0RVQHQۏ4ls^vYef[bg (W TL-NN gؚvf[/gXTf[/gq_T /f@b(Wf[yWvf[/gr^0 2 cc,gf[ySU\R` wQ gfnxvYef[xvzeT9hncV[Tf[ySU\ ;Nc g͑f[/gN
@ B D F P Z ^ j n p r | wnwng[RFR h\i hi 5CJ o( h{Y 5CJ o( h9 hT 5CJ o( hA CJ o(hrf 5CJ o( h9 hi 5CJ o( h3q? CJ o(h3 h3q? 5CJ o( hU 5CJ o( h9 hA 5CJ o( h 5CJ o( h9 h T 5CJ o( h9 h3q? 5CJ o( h h 5CJ \ h3q? 5CJ \o($j h3q? 5CJ U\mH nH u h 5CJ \o( $ & 0 6 @ D $ $G$ H$ If XD2 YD2 a$gd;4 $ $G$ H$ If XD2 YD2 a$gdY $a$ D F P p c L 5 $ $G$ H$ If XD2 YD2 a$gd{Y $ $G$ H$ If XD2 YD2 a$gdY kd $$If l \ h "x! n L V
0 "6 4
l aytU p r | p Y $ $G$ H$ If XD2 YD2 a$gd{Y $ $G$ H$ If XD2 YD2 a$gdY x kd $$If l 0 hx! 0 "6 4
l aytU ⱪm[ #haI hU CJ KH OJ PJ QJ o(#haI hMi CJ KH OJ PJ QJ o(haI hMi 5CJ o( h3q? CJ o(h9 h;4 5CJ o( h9 h3q? 5CJ o( hT CJ o( h9 hT 5B*CJ o(ph h|" 5CJ o( h\i hi 5CJ o( h\i h"J 5CJ o( h\i hF 5CJ o( h{Y 5CJ o( hU 5CJ o( s s [ G [ $G$ H$ If XD2 YD2 gdU
& F $G$ H$ If XD2 YD2 gdU $ $G$ H$ If XD2 YD2 a$x kdL $$If l 0 hx! 0 "6 4
l aytU
.
8
N
X
`
b
z
~
, . 0 2 pa haI KH OJ PJ QJ aJ o( h KH OJ PJ QJ aJ o(#haI h3q? CJ KH OJ PJ QJ o(haI hy 5CJ o( haI h}C CJ KH OJ PJ QJ #haI h}C CJ KH OJ PJ QJ o(haI hMi 5CJ o( &haI hMi >*CJ KH OJ PJ QJ o( &haI hU >*CJ KH OJ PJ QJ o( haI hU 5CJ o( 2
4
. } } } } $ $G$ H$ If a$ gdU
& F $G$ H$ If XD2 YD2 gdy $ $G$ H$ If a$ gd;4 $ $G$ H$ If a$ gd}C
& F $G$ H$ If XD2 YD2 gdL $
& F t $G$ H$ If XD2 YD2 ^ `gdaI . 0 2 4 6 8 : l X @ $G$ H$ If XD2 YD2 ^gdaI $ $G$ H$ If XD2 YD2 a${ kd $$If l 4 (0 hx! 0 "6 4
l af4ytU $ d4 $G$ H$ If WD `a$ gdaI 2 4 6 8 : F H V ( , 2 D F J R | & & & & & P( R( T( ^( ɵuib[ h X CJ o(haI CJ o(haI haI 5aJ o( haI CJ KH OJ PJ QJ o(U haI haI CJ KH OJ PJ QJ haI haI 5CJ o( #haI haI CJ KH OJ PJ QJ o(&haI haI >*CJ KH OJ PJ QJ o( haI >*CJ KH OJ PJ QJ o( h9 haI 5CJ o( h3q? CJ o(#hmb haI KH OJ PJ QJ aJ o( #: F X & & & & >' ( ,( P( R( $ d4 $G$ H$ If WD `a$ gdaI $ $G$ H$ If a$ gdaI $
& F t $G$ H$ If XD2 YD2 ^ `gdaI 3 3uN^cNNsLNeg(WYef[TYef[xvzeb g>fWq_TRvbg lQ _ShbQHr2 {N
Nؚ4ls^Yef[xvzbg1ubYef[c[YXTO[ 0 4 NsLNeg xvz]\Oe%N͑ݏĉݏl~U_0 2 0Yef[QeQagN 1 bbǏ,gy uW@x0xvz uf[MO03uN{[te;NǏ3 N
N z vQ-N\1 ,gy uW@xbNNW@x0 2 3uNNsLNegkf[t^khTs^GWc\6 eN+T|pe kf[t^\[tec2 zYef[(ϑ^E\,gbYe^MR3 0 % 0NsL g 3uNYlQ>mYuf[1 0 *NgN
N RYuf[ gNZPYef[8h0 3 SR
N]W{QǏ3 TN
NUxXxvz u0 4 NsLNeg e͑'YYef[NEe0 \MOL# yg~~yx0Yef[V _U\MRl'`yf[xvzTYef[xvz (WVQYCgZ08h_ g
R
NShؚ4ls^ve ^!h~N
NTLr z0 SNv^[bf[bf[yĉR gsQ 2 1 1 ͑pyvT 9 8 5 f[ys^Sv^]\O SNؚ4ls^vVQYf[/gNAm0 ؚhQ0W[bYef[NR Џ(uyxbgTsNYeKbkcؚYef[HegYefNTNv~ N W{Q}Yxvz u c[f[ uQ\Oؚ4ls^vf[MOe0 /ecf[ uvyR;mR0 Pge Bl
0Ye'Yf[Ye^ؚ~LR3ubh 0
0Ye'Yf[Ye^ؚ~LR3ub{h 0bg_(uNċN`Q*NNNh'`bgYpSNckؚ~ N,^cN3 - 5 y0oRؚ~2 - 3 y ,gN[Nh'`bgvbċNf
0Rt^Ye^f[ u]\O`Q[8hh 03 5 \N NRt^Ye^ kXQ 0 vQN b|T|e_ T|N _^ T| 5u 6 5 6 4 3 1 3 6 E - m a i l j j x y s z @ f u d a n . e d u . c n f[b Q@W h t t p : / / w w w . e c o n . f u d a n . e d u . c n / h5 R( T( ^( `( ( B) p X 0 0 ' $
& F $G$ H$ If XD2 YD2 ^ ` a$ gd X $ d4 $G$ H$ If WD `a$ gd? $ $G$ H$ If XD2 YD2 a${ kd $$If l 4 (0 hx! 0 "6 4
l af4ytU ^( `( ) ) ) ) ) ) ) * 0* D* X* * * * * * * + + + + + ,+ @+ f+ l+ n+ t+ + о~lee^U h#[ h#[ CJ h)k CJ o(h7 CJ o(#hU h3q? CJ KH OJ PJ QJ o(h h3q? CJ o( h CJ KH OJ PJ QJ o(#h< h CJ KH OJ PJ QJ o(h CJ o(h3q? CJ o(h X CJ o(#hY- h X CJ KH OJ PJ aJ o( h X CJ KH OJ PJ aJ o( h? h X CJ OJ PJ QJ o( h? h X CJ KH OJ PJ o( B) ) ) ) ) ) ) v $ d4 $G$ H$ If a$ gd? $ d4 $G$ H$ If a$ gd;q $ 0d4 $G$ H$ If WD `0a$ gdMi ' $
& F $G$ H$ If XD2 YD2 ^ ` a$ gd X $
& F H H $G$ H$ If XD2 YD2 ^H `gd X ) ) ) ) ) * * r r c c L $ $G$ H$ If XD2 YD2 [$\$a$ $ $G$ H$ If a$ gd $ $G$ H$ If XD2 YD2 a$y kd& $$If l 4 0 hx! 0 "6 4
l af4ytU * * * * r b $ $1$If a$ gdU $ $G$ H$ If XD2 YD2 a$y kd $$If l 4 0 hx! 0 "6 4
l af4ytU * * + + + + + .+ r [ [ [ [ [ $ $G$ H$ If XD2 YD2 a$gd $ $G$ H$ If XD2 YD2 a$y kd^ $$If l 4 0 hx! 0 "6 4
l af4ytU .+ 0+ 2+ @+ K 7 $ $G$ H$ If XD2 YD2 a$gd $ $G$ H$ If XD2 YD2 a$ kd $$If l 4 ;r hx! f B 0 "6 4
l af4ytU @+ h+ n+ t+ + + 4 kd $$If l 4 ;r hx! f B 0 "6 4
l af4ytU $ $G$ H$ If XD2 YD2 a$gd + + + + + + + + + + + + + + + + hLrW hLrW o(h` j h` Uh8 CJ o(h3q? CJ o(h#[ h3q? CJ o( + + + + + + + + + + + + + + + gd