World dynamicsWright-Allen Press, 1971 - 142 pages |
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Page 75
... Reduced usage rate of natural resources leads to a pollution crisis . 2020 . Population ' 2060 . The effect of reducing the demand for natural resources is to take one layer of restraint off the growth forces of the system . If natural ...
... Reduced usage rate of natural resources leads to a pollution crisis . 2020 . Population ' 2060 . The effect of reducing the demand for natural resources is to take one layer of restraint off the growth forces of the system . If natural ...
Page 100
... reduced . Figure 5-4 shows the combined effect of a lowered usage of resources and a reduced birth rate . Natural - resource usage normal NRUN1 is reduced to 25 % of its original value , and birth rate normal BRN1 is reduced to 0.028 or ...
... reduced . Figure 5-4 shows the combined effect of a lowered usage of resources and a reduced birth rate . Natural - resource usage normal NRUN1 is reduced to 25 % of its original value , and birth rate normal BRN1 is reduced to 0.028 or ...
Page 120
... reduced along with the conditions in the previous two figures . The following are the changes from the original model that are combined in this last set of figures : Natural - resource - usage rate reduced 75 % Pollution generation ...
... reduced along with the conditions in the previous two figures . The following are the changes from the original model that are combined in this last set of figures : Natural - resource - usage rate reduced 75 % Pollution generation ...
Contents
Introduction | 1 |
Structure of the World System | 17 |
A World Model Structure and Assumptions | 31 |
Copyright | |
6 other sections not shown
Common terms and phrases
1970 conditions accumulation agricultural land assumed assumptions behavior billion 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 cause Chapter CI=C CIAF CIGN1 CIMT 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-resource Natural-resource-usage rate negative loop NR=N NREM NREMT NRUN1 POLN1 POLAT pollution absorption pollution crisis pollution ratio POLR POLLUTION UNITS pollution-absorption population and capital population density pressures QL-Q ratio CIR RATIO DIMENSIONLESS result rise Section sector shortage social systems SQUARE KILOMETERS standard of living system levels TABHL TABLE LOOK tion units per person UNITS/PERSON/YEAR UNITS/YEAR usage rate variable world model world population world system