Appendix (Stella^® Algorithms)

DEMOGRAPHICS

POPULATION(T) = POPULATION(T - DT) + (BIRTHS + IMMIGRATION -OUTMIGRATION - DEATHS) * DT

INIT POPULATION = 567365

INFLOWS:

BIRTHS = POPULATION*BDRATE

IMMIGRATION = MAQUILA_EMP*RATE_IMMIGRATION

OUTFLOWS:

OUTMIGRATION = IF(USAGDP_RATE<=0) THEN RATE_0UT=.025 ELSE 0

DEATHS = POPULATION*DRATE

BDRATE = 28.3/1000

DRATE = 5.45/1000

RATE_IMMIGRATION = .05

RATE_OUT = .025

ECONOMIC SECTOR

MAQUILA_EMP(T) = MAQUILA_EMP(T - DT) + (GRT_EMP) * DT INIT MAQUILA_EMP = 39402

INFLOWS:

GRT_EMP = MAQUILA_EMP*ELAST_IND_EMP*USAGDP_RATE

ELAST_IND_EMP = 2.774

USAGDP_RATE = .035

LAND USE SECTORS

LAND USES GROWTH

COMMERCIAL_LAND(T) = COMMERCIAL_LAND(T - DT) + (GRT_C0MM_LAND) * DT

INIT COMMERCIAL_LAND = 688

INFLOWS:

GRT_COMM_LAND =

COMMERCIAL_LAND*ELAST_COMPOP*ELAST_POPGDP*USAGDP_RATE

INDUSTRIAL_LAND(T) = INDUSTRIAL_LAND(T - DT) + (GRT_IND_LAND) * DT

INIT INDUSTRIAL_LAND = 378

INFLOWS:

GRT_IND_LAND =

INDUSTRIAL_LAND*ELAST_IND_EMP*ELAST_URBIND*USAGDP_RATE

RESIDENTIAL_LAND(T) = RESIDENTIAL_LAND(T - DT) + (GRT_RES_LAND) * DT

INIT RESIDENTIAL_LAND = 6061

INFLOWS:

GRT_RES_LAND =

RESIDENTIAL_LAND*ELAST_POPGDP*ELAST_RESIDLAND*USAGDP_RATE

ELAST_COMPOP = 1.036

ELAST_POPGDP = 1.185

ELAST_RESIDLAND = .633

ELAST_URBIND = 1