World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 74
... improve performance of the real system . A third category of changes are made to search for various modes of behavior that the system can exhibit . The latter are useful to improve our understanding of the system with which we are ...
... improve performance of the real system . A third category of changes are made to search for various modes of behavior that the system can exhibit . The latter are useful to improve our understanding of the system with which we are ...
Page 80
... improve the model . Further improvements are to be a part of programs now in progress . Figure 4-5 teaches a ... improving so rapidly that it could exploit geographical space and natural resources faster than the population could ...
... improve the model . Further improvements are to be a part of programs now in progress . Figure 4-5 teaches a ... improving so rapidly that it could exploit geographical space and natural resources faster than the population could ...
Page 94
... improvement often sets the stage for a long - term degradation . Third , the local goals of a part of a system often ... improve- ment may initially depress the behavior of a system . This is especially treacherous . The short run is ...
... improvement often sets the stage for a long - term degradation . Third , the local goals of a part of a system often ... improve- ment may initially depress the behavior of a system . This is especially treacherous . The short run is ...
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