World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 43
... rise to the left in the diagram is inescapable . To the right , one might argue that more food could not produce as much as a 50 per cent decline in death rate . The effect of a relationship like the one assumed in Figure 3-5 is to ...
... rise to the left in the diagram is inescapable . To the right , one might argue that more food could not produce as much as a 50 per cent decline in death rate . The effect of a relationship like the one assumed in Figure 3-5 is to ...
Page 112
... rise far enough to suppress the forces that produced growth . Not only is the world facing the pressures that will stop population growth , but it also is encountering the pressures that will stop the rise of both industrialization and ...
... rise far enough to suppress the forces that produced growth . Not only is the world facing the pressures that will stop population growth , but it also is encountering the pressures that will stop the rise of both industrialization and ...
Page 124
... rise further until the pressures reappear with an intensity that can no longer be relieved . Trying to raise quality of life without intentionally creating compensating pressures to prevent a rise in population density will be self ...
... rise further until the pressures reappear with an intensity that can no longer be relieved . Trying to raise quality of life without intentionally creating compensating pressures to prevent a rise in population density will be self ...
Contents
Introduction | 1 |
Structure of the World System | 17 |
A World Model Structure and Assumptions | 31 |
Copyright | |
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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