World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 23
... Capital - Investment Loops Figure 2-3 pictures two of the loops that control capital investment . Again one is positive and one negative . Capital - investment generation CIG depends on population and on capital - investment generation ...
... Capital - Investment Loops Figure 2-3 pictures two of the loops that control capital investment . Again one is positive and one negative . Capital - investment generation CIG depends on population and on capital - investment generation ...
Page 50
... investment - in - agriculture fraction normal CIAFN . The last term has an estimated value of 0.3 and restores the normal value of CIRA to 1 for the 1970 ... Capital - Investment Generation CIG The generation of capital 50 Chapter Three.
... investment - in - agriculture fraction normal CIAFN . The last term has an estimated value of 0.3 and restores the normal value of CIRA to 1 for the 1970 ... Capital - Investment Generation CIG The generation of capital 50 Chapter Three.
Page 139
... CAPITAL - FRACTION - INDICATED - BY - FOOD - RATIO TABLE CAPITAL INVESTMENT ( CAPITAL UNITS ) CAPITAL - INVESTMENT - IN - AGRICULTURE FRACTION ( DIMENSIONLESS ) CAPITAL - INVESTMENT - IN - AGRICULTURE FRACTION , INITIAL ( DIMENSIONLESS ) ...
... CAPITAL - FRACTION - INDICATED - BY - FOOD - RATIO TABLE CAPITAL INVESTMENT ( CAPITAL UNITS ) CAPITAL - INVESTMENT - IN - AGRICULTURE FRACTION ( DIMENSIONLESS ) CAPITAL - INVESTMENT - IN - AGRICULTURE FRACTION , INITIAL ( DIMENSIONLESS ) ...
Contents
Introduction | 1 |
Structure of the World System | 17 |
A World Model Structure and Assumptions | 31 |
Copyright | |
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Common terms and phrases
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