World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 84
... suppressed by crowding . 2020.- In Figure 4-9 the capital investment rises to 38 billion units to yield a capital- investment ratio CIR of 3.9 times the 1970 capital investment per person . This , of course , is possible only because of ...
... suppressed by crowding . 2020.- In Figure 4-9 the capital investment rises to 38 billion units to yield a capital- investment ratio CIR of 3.9 times the 1970 capital investment per person . This , of course , is possible only because of ...
Page 86
... suppressed to show the influence of crowding on growth . Now , if the effect of crowding is also eliminated , food ... suppress the effects of crowding on the birth and death rates . The latter adjustment can be made by changing the ...
... suppressed to show the influence of crowding on growth . Now , if the effect of crowding is also eliminated , food ... suppress the effects of crowding on the birth and death rates . The latter adjustment can be made by changing the ...
Page 144
... suppression , 8 Population control by crowding , 25-26 , 81-86 by food , 27 , 86-91 by natural resources , 29-30 , 69-74 by pollution , 28-29 , 74-81 self - defeating , 11 see also Birth control Pressures , in social systems , 112-113 ...
... suppression , 8 Population control by crowding , 25-26 , 81-86 by food , 27 , 86-91 by natural resources , 29-30 , 69-74 by pollution , 28-29 , 74-81 self - defeating , 11 see also Birth control Pressures , in social systems , 112-113 ...
Contents
Introduction | 1 |
Structure of the World System | 17 |
A World Model Structure and Assumptions | 31 |
Copyright | |
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1970 conditions assumed assumptions behavior 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 Chapter CI=C CIAF CIGN1 Club of Rome computer model crowding ratio curve decline DRFM ECIR effect effective-capital-investment ratio environment equations equilibrium exponential growth food production food ratio food supply FPMT in-agriculture fraction increase industrialization INTERPOLATION Limits to Growth LOGICAL FUNCTION Main Street Cambridge material standard mental models MULTIPLIER DIMENSIONLESS natural resources natural-resource Natural-resource-usage rate negative loop NR=N NREM NREMT NRUN1 POLN1 physical limits physical stress POLAT pollution absorption pollution crisis pollution-absorption population and capital population density PRESENT ORIGINAL pressures processes QL-Q ratio CIR RATIO DIMENSIONLESS rise Section sector shortage social stress social systems standard of living structure system levels TABHL TABLE LOOK tion units per person UNITS/PERSON/YEAR UNITS/YEAR usage rate variable world model world population world system