World Dynamics1971 |
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Page ix
... existing model should be identified at each point in time . Second , the best currently existing model should be used in preference to traditional models that may be less clear and less correct . Third , aggressive effort should be ...
... existing model should be identified at each point in time . Second , the best currently existing model should be used in preference to traditional models that may be less clear and less correct . Third , aggressive effort should be ...
Page 33
... existing in 1970. That is , the multipliers will have values of 1 throughout the system when the system levels ( population , capital , natural resources , capital in agriculture , and pollution ) have their 1970 values . The actual ...
... existing in 1970. That is , the multipliers will have values of 1 throughout the system when the system levels ( population , capital , natural resources , capital in agriculture , and pollution ) have their 1970 values . The actual ...
Page 57
... existing pollution to disappear . It represents the same concept as the half - life of atomic decay which is the time for half of the material to disintegrate . A pollution ratio POLR of 1 represents the conditions exising in 1970. A ...
... existing pollution to disappear . It represents the same concept as the half - life of atomic decay which is the time for half of the material to disintegrate . A pollution ratio POLR of 1 represents the conditions exising in 1970. A ...
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