World Dynamics1971 |
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Page 95
... pressures from rising population . 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 ...
... pressures from rising population . 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 ...
Page 112
... pressures and stresses . But many possible modes exist , and some are more desirable than others . Usually , the more attractive kinds of behavior in our social systems seem to be possible only if we have a good understanding of the ...
... pressures and stresses . But many possible modes exist , and some are more desirable than others . Usually , the more attractive kinds of behavior in our social systems seem to be possible only if we have a good understanding of the ...
Page 124
... pressures are exactly the sources of concern and actions that will control total population to keep it within the bounds of the fixed world within which we live . If the pressures are relaxed , so is the concern about how we impinge on ...
... pressures are exactly the sources of concern and actions that will control total population to keep it within the bounds of the fixed world within which we live . If the pressures are relaxed , so is the concern about how we impinge on ...
Contents
Introduction | 1 |
Structure of the World System | 17 |
A World Model Structure and Assumptions | 31 |
Copyright | |
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1970 conditions accumulation agricultural land assumed assumptions behavior birth rate normal birth-control program BRFM BRMM BRN1 capital investment CAPITAL UNITS CAPITAL UNITS/PERSON CAPITAL-INVESTMENT DISCARD capital-investment multiplier capital-investment ratio CAPITAL-INVESTMENT-IN-AGRICULTURE FRACTION cause Chapter CIAF CIGN1 Club of Rome coefficient computer model crowding ratio curve death rate normal decline DRFM dynamic ECIR effect effective-capital-investment ratio equations equilibrium exponential growth food production food ratio food supply FPMT FRACTION/YEAR in-agriculture fraction increase industrialization INTERPOLATION limit LOGICAL FUNCTION material standard mental models MULTIPLIER DIMENSIONLESS natural resources natural-resource Natural-resource-usage rate negative loop NR=N NREM NREMT NRUN1 POLN1 POLAT POLCM pollution absorption pollution crisis pollution-absorption population and capital population density PRESENT ORIGINAL pressures ratio CIR RATIO DIMENSIONLESS result rise Section sector shortage social systems SQUARE KILOMETERS standard of living system levels TABHL TABLE LOOK TIME.K tion units per person UNITS/PERSON/YEAR UNITS/YEAR usage rate variable world model world population world system