World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 43
... effect that has been included . Crowding ratio CR is the ratio of people to the 1970 population . Up to the present level of world population , little effect on death rate has been assumed from crowding . However , as crowding rises ...
... effect that has been included . Crowding ratio CR is the ratio of people to the 1970 population . Up to the present level of world population , little effect on death rate has been assumed from crowding . However , as crowding rises ...
Page 86
... effects of resource depletion and of pollution were suppressed to show the influence of crowding on growth . Now , if the effect of crowding is also eliminated , food shortage will become the limiting factor in stopping the growth of ...
... effects of resource depletion and of pollution were suppressed to show the influence of crowding on growth . Now , if the effect of crowding is also eliminated , food shortage will become the limiting factor in stopping the growth of ...
Page 104
... effect would appear outside the demographic sector and have an opportunity to raise the quality of life . We would therefore expect the effect on quality of life to be much less than seen here in these computer runs . Only a detailing ...
... effect would appear outside the demographic sector and have an opportunity to raise the quality of life . We would therefore expect the effect on quality of life to be much less than seen here in these computer runs . Only a detailing ...
Contents
Introduction | 1 |
Structure of the World System | 17 |
A World Model Structure and Assumptions | 31 |
Copyright | |
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Common terms and phrases
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