罗默的新增长理论述评

19975[],,,,[][],1968,1995,,80,,:,,,,,,,,,19861988,19871990,80,91:(É)1986,,,;,,,,,,,,,,,,:(1),(2),(3),(4),,,,,(É):(1),FkX=XK=Nk,N,FkX,,,,FkK,·(k)=f(k,Nk)=F(k,Nk,X),·(k)=f(k,Nk)L+kQ(2)Ik,ka=G(I,k),Gg(y)=G(y,1),:kak=g(Ik),gE(3),SNu(c(t))PS,PS:max0u(c(t))e-Dtdts.t.ka(t)k(t)=g(·(k(t))-c(t)k(t))DP(K)K(t)ka(t)k(t),P(K):max0u(c(t))e-Dtdts.t.ka(t)k(t)=02g(f(k(t),K(t))-c(t)(k(t)))k3(t)Nk3(t)=K(t),k3(t),EQD,PS,ED,Q1,K(t)K(0)eEtK(t),P(K)K3(t),k3(t):Nk3(t)=K(t),,,,c(t)k(t),,5f5k,5f5k+N5f5k,,,,,,:k,ka,1987((Ê))1990((Ë)),,11(Ê)1987,(Ethier)1982,(Dixit)(Stiglitz)D-S,(Ê),,;,,L=1x(i)i,D-S:Y(L,x)=L0g(x(i)L)dig,g(0)=0i,x(i)=TM,T,M,:Y(L,{T,M})=mg(TM)gg(x)=xA,0A1,:Y(L,{T,M})=M1-ATA12M,Y,MLT,Y,(Ê)0u(c(t))e-Dt:u(c)=(c1-R-1)ö(1-R),R(0,),g:[0,x0],g(x)=g1(x),g1(0)=0,g1(x0)=1;(x0,),g1(x)=G+x0x01gg(x)=g2(x)=xA,0A1,,g(x)=g1(x),1-DR,M(t),,M(t),M(t),g(x)=g2(x),21(Ë)1990(Ë),,,:,,,,H(Ë)(Ë)(1)AHAA,A=HHAAH,(2),1G(3),,C-D:22Y(HY,L,X)=HAYLB0x(i)1-A-Bdi(4),0u(c(t))e-Dtdtu(c(t)):u(c)=(c1-R-1)ö(1-R),R(0,),AKYg:g=CC=YY=KK=AA=HHA=HH-A(1-A-B)(A+B)CC,,;,(Ë),,;,;(Ë),,,,,,,,,,(É),,,,,(É),(É):(1)(É),,,(2),,,,kX32,,,kX(É),(3)(É),,,,(É),(Ê),,(Ê),,(Ê),,,,,,,(Ê),(Ë),,,(Ë),:(1),,(2),,,(3),,,(4)(Ë),,,,,,??,,()42