World Dynamics1971 |
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Page 33
... actual birth rate depends on conditions in other parts of the world system outside the population sector . In particular , birth rate will depend on the condition of capital investment and natural resources as they manifest themselves ...
... actual birth rate depends on conditions in other parts of the world system outside the population sector . In particular , birth rate will depend on the condition of capital investment and natural resources as they manifest themselves ...
Page 58
... actual fraction of capital in agriculture as it moves toward the fraction that is called for by current conditions . The gradual adjustment introduces a delay that represents the time necessary for the changing mix of capital to be ...
... actual fraction of capital in agriculture as it moves toward the fraction that is called for by current conditions . The gradual adjustment introduces a delay that represents the time necessary for the changing mix of capital to be ...
Page 74
... Actual stocks of natural resources may be greater than the 250 - year supply that has been assumed here . Furthermore , science may make continuing substitutions to delay the im- pact of resource shortage . If natural resources do not ...
... Actual stocks of natural resources may be greater than the 250 - year supply that has been assumed here . Furthermore , science may make continuing substitutions to delay the im- pact of resource shortage . If natural resources do not ...
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