World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 95
... Greater capital investment and more intensive use of land in agriculture have increased food output in the short run but in the long run have destroyed the productivity of vast land areas by erosion and salt contamination . As for the ...
... Greater capital investment and more intensive use of land in agriculture have increased food output in the short run but in the long run have destroyed the productivity of vast land areas by erosion and salt contamination . As for the ...
Page 113
... greater industrialization is accelerating many of today's social stresses . Also , efforts are being made to in- crease food output even though the primary result may be to increase population and to lower the quality of life . If ...
... greater industrialization is accelerating many of today's social stresses . Also , efforts are being made to in- crease food output even though the primary result may be to increase population and to lower the quality of life . If ...
Page 132
... greater seems to be the vulnerability of the social structure to disruption . With a more advanced technological base , stronger political control must be exerted to enforce the compromises that must be made between conflicting sectors ...
... greater seems to be the vulnerability of the social structure to disruption . With a more advanced technological base , stronger political control must be exerted to enforce the compromises that must be made between conflicting sectors ...
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