World Dynamics1971 |
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Page 75
... Reduced usage rate of natural resources leads to a pollution crisis . 2020 . Q Population a 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 ...
... Reduced usage rate of natural resources leads to a pollution crisis . 2020 . Q Population a 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 ...
Page 98
... Reduced Birth Rate Within the context of a global dynamic system , what result might we expect from birth - control programs ? Will they be effective , or will they fall into one of the failure categories so common to programs that ...
... Reduced Birth Rate Within the context of a global dynamic system , what result might we expect from birth - control programs ? Will they be effective , or will they fall into one of the failure categories so common to programs that ...
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 ...
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