World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 3
... Figure 1-1 is a tabulation of population for the subsequent 700 years . In 700 years the popula- tion rises from 1 million to 16,384 million . The values of Figure 1-1 have been plotted as the solid line on the graph of Figure 1-2 . A ...
... Figure 1-1 is a tabulation of population for the subsequent 700 years . In 700 years the popula- tion rises from 1 million to 16,384 million . The values of Figure 1-1 have been plotted as the solid line on the graph of Figure 1-2 . A ...
Page 6
... Figure 1-3 Food ratio ( adequacy ) as it depends on agricultural land units per person . .. Figure 1-3 presents an assumption about how the food per person is related to the agricultural land per person . Only the general shape is ...
... Figure 1-3 Food ratio ( adequacy ) as it depends on agricultural land units per person . .. Figure 1-3 presents an assumption about how the food per person is related to the agricultural land per person . Only the general shape is ...
Page 109
... Figure 5-12 Compared with Figure 5-11 , increased capital generation causes an earlier pollution crisis . 2020 . 2060 . balance . The reader may feel that combinations of these programs would yield better results . We here consider such ...
... Figure 5-12 Compared with Figure 5-11 , increased capital generation causes an earlier pollution crisis . 2020 . 2060 . balance . The reader may feel that combinations of these programs would yield better results . We here consider such ...
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