Convergence of City Relational Network, Production Sector Structure, and Regional Development

Table 4

Relevant variables.

Name	Abbreviation	Meaning
Employment structure of city i	lnemployment_i	Employment ratio between the two sectors in city i
Employment structure of city j	lnemployment_j	Employment ratio between the two sectors in city j
Scale of city i	lncitysize_i	Population of the districts administered by city i
Scale of city j	lncitysize_j	Population of the districts administered by j
Employment structure ratio between the two cities	lnemployment_ij	Employment structure of city i divided by that of city j
Distance between the two cities	lndistance_ij	Expressway distance between cities i and j on Baidu Map
Per-capita GDP ratio between the two cities	lngdp_ij	Per-capita GDP of city i divided by that of city j
Gravity flow from city j to city i	lnfij