World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 8
... occurs . It is certain that resource shortage , pollution , crowding , food failure , or some other equally powerful ... occur is inevitable . Unless we come to understand and to choose , the social system by its internal processes will ...
... occurs . It is certain that resource shortage , pollution , crowding , food failure , or some other equally powerful ... occur is inevitable . Unless we come to understand and to choose , the social system by its internal processes will ...
Page 75
... occur if no other pressure limits growth before pollution does so . Here pollution rises to more than 40 times the ... occurs , pollution climbs steeply and continues to grow until it ex- tinguishes the pollution - creating processes ...
... occur if no other pressure limits growth before pollution does so . Here pollution rises to more than 40 times the ... occurs , pollution climbs steeply and continues to grow until it ex- tinguishes the pollution - creating processes ...
Page 77
... occurs mostly in the industrialized nations , capital investment and the remaining world population would be geographically separated . Also the differences in culture and education would prevent a population in an underdeveloped ...
... occurs mostly in the industrialized nations , capital investment and the remaining world population would be geographically separated . Also the differences in culture and education would prevent a population in an underdeveloped ...
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