World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 13
... Dynamics ( 1961 , Reference 2 ) . Principles of Systems ( 1968 , Reference 3 ) presents the theory of structure in dynamic systems , and Urban Dynamics ( 1969 , Reference 5 ) is an application to growth and decline of a city . For ...
... Dynamics ( 1961 , Reference 2 ) . Principles of Systems ( 1968 , Reference 3 ) presents the theory of structure in dynamic systems , and Urban Dynamics ( 1969 , Reference 5 ) is an application to growth and decline of a city . For ...
Page 15
... dynamic consequences of how the parts of a system will interact with one another . Until recently there has been no way to estimate the behavior of social sys- tems except by contemplation , discussions , argument , and guesswork . 1.6 ...
... dynamic consequences of how the parts of a system will interact with one another . Until recently there has been no way to estimate the behavior of social sys- tems except by contemplation , discussions , argument , and guesswork . 1.6 ...
Page 67
... dynamic model . Such a model constitutes a theory of be- havior and interaction . Few people find the assumptions in Chapter 3 surprising . The assumptions seem to fall within the range of beliefs on which many of us are now acting ...
... dynamic model . Such a model constitutes a theory of be- havior and interaction . Few people find the assumptions in Chapter 3 surprising . The assumptions seem to fall within the range of beliefs on which many of us are now acting ...
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