World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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... result , a meet- ing convened on July 20 for ten days of study , presentations , and discus- sion . The dynamic model of world interactions described in this book was devised in the early part of July to form a basis for discussion at ...
... result , a meet- ing convened on July 20 for ten days of study , presentations , and discus- sion . The dynamic model of world interactions described in this book was devised in the early part of July to form a basis for discussion at ...
Page 17
... resulting conditions in turn come back as " information " to influence further action . We often erroneously think of cause ... Result B represents a new condition of the system that changes the future influences that affect action at A ...
... resulting conditions in turn come back as " information " to influence further action . We often erroneously think of cause ... Result B represents a new condition of the system that changes the future influences that affect action at A ...
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... result may be that pressures continue to build until the corrective effort is overcome . Or , the result may be to transfer the system response to another mode as can be made to happen by reducing the pollution more than in Figure 5-8 ...
... result may be that pressures continue to build until the corrective effort is overcome . Or , the result may be to transfer the system response to another mode as can be made to happen by reducing the pollution more than in Figure 5-8 ...
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