World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 54
... tion processes as we now know them would be unfavorably altered . 3.29 Pollution Ratio POLR Pollution ratio is defined in relation to the 1970 level of pollution . It is computed by dividing the actual amount of pollution POL by the ...
... tion processes as we now know them would be unfavorably altered . 3.29 Pollution Ratio POLR Pollution ratio is defined in relation to the 1970 level of pollution . It is computed by dividing the actual amount of pollution POL by the ...
Page 55
... tion normal POLN and by the pollution - from - capital multiplier POLCM . The multiplier POLCM represents the effect of capital investment per person on pollu- tion generation . For conditions in the year 1970 it has a defined value of ...
... tion normal POLN and by the pollution - from - capital multiplier POLCM . The multiplier POLCM represents the effect of capital investment per person on pollu- tion generation . For conditions in the year 1970 it has a defined value of ...
Page 104
... tion and growth rate to be in balance with the traditions that have been accepted for quality of life . A birth - control program would actually operate within the subsystem of the demographic sector of the world system and would be sur ...
... tion and growth rate to be in balance with the traditions that have been accepted for quality of life . A birth - control program would actually operate within the subsystem of the demographic sector of the world system and would be sur ...
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