World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 17
... structure chosen to represent interactions between the major sectors of the world system . Section 2.1 introduces the complete system while the ... structure between action ( sleeping ) and the system condition Structure of the World System.
... structure chosen to represent interactions between the major sectors of the world system . Section 2.1 introduces the complete system while the ... structure between action ( sleeping ) and the system condition Structure of the World System.
Page 18
... structure tell us that two kinds of variables will be found - levels and rates . The levels are the accumulations ( integrations ) within the system . The rates are the flows that cause the levels to change . A level accumulates the net ...
... structure tell us that two kinds of variables will be found - levels and rates . The levels are the accumulations ( integrations ) within the system . The rates are the flows that cause the levels to change . A level accumulates the net ...
Page 19
... structure of the model system because structure is usually more important than the assumed numerical values in determining the modes of behavior that a system can exhibit . Five levels were chosen as the cornerstones on which to build ...
... structure of the model system because structure is usually more important than the assumed numerical values in determining the modes of behavior that a system can exhibit . Five levels were chosen as the cornerstones on which to build ...
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