World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 41
... POLR . Pollution ratio is the ratio of world pollution level to the value of the world average in 1970. In the figure , a value of 60 for POLR means 60 times as much pollution in the world environment as in 1970. It is here assumed that ...
... POLR . Pollution ratio is the ratio of world pollution level to the value of the world average in 1970. In the figure , a value of 60 for POLR means 60 times as much pollution in the world environment as in 1970. It is here assumed that ...
Page 53
... POLR of 1 is defined as the pollution condition in 1970. The curve asserts that little effect from pollution has occurred up to the FPM 1.5 FPMT Eq . 28.1 1.0 0.5 0 0 10 10 20 20 30 30 POLR 40 40 50 60 60 FPM.K - TABLE ( FPMT , POLR.K ...
... POLR of 1 is defined as the pollution condition in 1970. The curve asserts that little effect from pollution has occurred up to the FPM 1.5 FPMT Eq . 28.1 1.0 0.5 0 0 10 10 20 20 30 30 POLR 40 40 50 60 60 FPM.K - TABLE ( FPMT , POLR.K ...
Page 54
... POLR.K , 0,60,10 ) FPMT = 1.02 / .9 / .65 / .35 / .2 / .1 / .05 28 , A 28.1 , T FOOD - FROM - POLLUTION MULTIPLIER ( DIMENSIONLESS ) FPM TABLE · LOGICAL FUNCTION , TABLE LOOK UP AND INTERPOLATION FPMT POLR - · FOOD - FROM - POLLUTION ...
... POLR.K , 0,60,10 ) FPMT = 1.02 / .9 / .65 / .35 / .2 / .1 / .05 28 , A 28.1 , T FOOD - FROM - POLLUTION MULTIPLIER ( DIMENSIONLESS ) FPM TABLE · LOGICAL FUNCTION , TABLE LOOK UP AND INTERPOLATION FPMT POLR - · FOOD - FROM - POLLUTION ...
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