World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 37
... CIAF ) is multiplied at this point . CIAF is the variable fraction of capital that is allocated to agriculture . ECIR has been defined so that the " normal " value in 1970 should be 1. To make this true , the actual fraction of capital ...
... CIAF ) is multiplied at this point . CIAF is the variable fraction of capital that is allocated to agriculture . ECIR has been defined so that the " normal " value in 1970 should be 1. To make this true , the actual fraction of capital ...
Page 50
... ( CIAF.K ) / CIAFN CIAFN = .3 22 , A 22.1 , C CIRA - CAPITAL - INVESTMENT RATIO IN AGRICULTURE ( CAPITAL UNITS / PERSON ) CIR CIAF CIAFN CAPITAL - INVESTMENT RATIO ( CAPITAL UNITS / PERSON ) CAPITAL - INVESTMENT - IN - AGRICULTURE ...
... ( CIAF.K ) / CIAFN CIAFN = .3 22 , A 22.1 , C CIRA - CAPITAL - INVESTMENT RATIO IN AGRICULTURE ( CAPITAL UNITS / PERSON ) CIR CIAF CIAFN CAPITAL - INVESTMENT RATIO ( CAPITAL UNITS / PERSON ) CAPITAL - INVESTMENT - IN - AGRICULTURE ...
Page 59
... CIAF is to give food a priority over material goods so that the most pressing necessity of life gets preferred claim on the capital plant of the world . CIAF is a system level and requires an initial condition . We start the system in ...
... CIAF is to give food a priority over material goods so that the most pressing necessity of life gets preferred claim on the capital plant of the world . CIAF is a system level and requires an initial condition . We start the system in ...
Contents
Introduction | 1 |
Structure of the World System | 17 |
A World Model Structure and Assumptions | 31 |
Copyright | |
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1970 conditions assumed assumptions behavior birth rate normal birth-control program BRFM BRN1 capital investment CAPITAL UNITS CAPITAL UNITS/PERSON CAPITAL-INVESTMENT DISCARD capital-investment ratio CAPITAL-INVESTMENT-IN-AGRICULTURE FRACTION Chapter CI=C CIAF CIGN1 Club of Rome computer model crowding ratio curve decline DRFM ECIR effect effective-capital-investment ratio environment equations equilibrium exponential growth food production food ratio food supply FPMT in-agriculture fraction increase industrialization INTERPOLATION Limits to Growth LOGICAL FUNCTION Main Street Cambridge material standard mental models MULTIPLIER DIMENSIONLESS natural resources natural-resource Natural-resource-usage rate negative loop NR=N NREM NREMT NRUN1 POLN1 physical limits physical stress POLAT pollution absorption pollution crisis pollution-absorption population and capital population density PRESENT ORIGINAL pressures processes QL-Q ratio CIR RATIO DIMENSIONLESS rise Section sector shortage social stress social systems standard of living structure system levels TABHL TABLE LOOK tion units per person UNITS/PERSON/YEAR UNITS/YEAR usage rate variable world model world population world system