World Dynamics1971 |
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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 99
... effect , reduced the internal system pressures that had previously been limiting the rise of population . The rate of increase of population depends on a combination of many influ- ences . But the influences interact between themselves ...
... effect , reduced the internal system pressures that had previously been limiting the rise of population . The rate of increase of population depends on a combination of many influ- ences . But the influences interact between themselves ...
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