World Dynamics1971 |
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Page 43
... assumed in Figure 3-5 is to raise death rate when food per person falls and to reduce death rate when food per person rises . The result is to regulate population toward the maximum that food will support . At that maximum , keeping in ...
... assumed in Figure 3-5 is to raise death rate when food per person falls and to reduce death rate when food per person rises . The result is to regulate population toward the maximum that food will support . At that maximum , keeping in ...
Page 46
... assumed to raise the birth rate by a factor of 2. At a high food ratio , there would be no threat of starvation , supplies would be ample , and health as attributable to food would be excellent . BRFM 2 BRFMT Eq . 17.1 0 0 1 2 3 4 FR ...
... assumed to raise the birth rate by a factor of 2. At a high food ratio , there would be no threat of starvation , supplies would be ample , and health as attributable to food would be excellent . BRFM 2 BRFMT Eq . 17.1 0 0 1 2 3 4 FR ...
Page 61
... assumed here that such an improvement could be interpreted as increasing the average world quality of life by a factor of 3. There is no " right " vertical scale or steepness of slope to use in such a curve . The choice is arbitrary in ...
... assumed here that such an improvement could be interpreted as increasing the average world quality of life by a factor of 3. There is no " right " vertical scale or steepness of slope to use in such a curve . The choice is arbitrary in ...
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