World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 8
... shortage until it is too late to redirect the forces of growth into a satisfactory form of long - term equilibrium . The abruptness seen in Figures 14 and 1-5 might not be so accentuated in real life because land is of varying quality ...
... shortage until it is too late to redirect the forces of growth into a satisfactory form of long - term equilibrium . The abruptness seen in Figures 14 and 1-5 might not be so accentuated in real life because land is of varying quality ...
Page 36
... shortage in world - wide natural resources . A resource shortage means that capital plant becomes less effective as more and more of the capital investment must be devoted to mining more deeply , refining poorer ores , and using less ...
... shortage in world - wide natural resources . A resource shortage means that capital plant becomes less effective as more and more of the capital investment must be devoted to mining more deeply , refining poorer ores , and using less ...
Page 80
... shortage was solved only to be replaced by the pollution crisis . Of the two , the pollution crisis is more traumatic than the gradual pressures created by the resource shortage . Of course , conflict for possession of resources could ...
... shortage was solved only to be replaced by the pollution crisis . Of the two , the pollution crisis is more traumatic than the gradual pressures created by the resource shortage . Of course , conflict for possession of resources could ...
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