3
4 5
8
KW Q = AK α W β q = a + α k + βw q = log Q, k = log K, w = logw
i P ij v ij P ij = exp( vij ), J exp( v ) k= 1 ik v i j = X β αp + γnu j j j j X j j p j j NU j j NU j
( ) ( ) i j P ij P ij P ij = J exp( vij ) v exp( v ) k= 1 ik ij = α ln( speed ) + βp ij ij j=
v ij i j i j P ij j speed ij p ij i v ik p ik k j speed ij i j i i v ij
p ij i j i i ε own ε 53 k ε own k j ε cross cross ε ε own cross dpk pk = = pk β ( 1 Sharek ) dp P k dp k p j k = = pk β dpk Pj Share k ε ε own cross k j
ε own ε cross εown ε own ε cross ε cross ε own
cross ε cross ε
g g Narrow Broad i j P ij i g P i,g g i j P i,j g λg exp ( ν ij λ ) g j g exp ( ν ij λg ) Pig =, P = λ j g g i, G exp( ν ik λ ) g exp( ν ik λ ) g k g g= 1 k g v ij = c + α ln( speed ) + βp + γ j ij ij j income i j=
σ g =1-λ g g λ g σ g σ g
σ g
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