World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 85
... equilibrium . If time delays existed , the curves could rise above their equilibrium values and fluctuate around the equilibrium values . If regenerative processes were included , one could expect the same kind of population collapse ...
... equilibrium . If time delays existed , the curves could rise above their equilibrium values and fluctuate around the equilibrium values . If regenerative processes were included , one could expect the same kind of population collapse ...
Page 112
... equilibrium . A number of studies of social systems have resulted in models that generate life cycles that start with growth and merge into equilibrium . There are always severe stresses in the transition . Pressures must rise far ...
... equilibrium . A number of studies of social systems have resulted in models that generate life cycles that start with growth and merge into equilibrium . There are always severe stresses in the transition . Pressures must rise far ...
Page 125
... equilibrium ? 7.4 Improved Models of Social Systems Provisionally , the answer given in this book is yes . We should be able to plot a course from exponential growth into global equilibrium . No final recommendations have been offered ...
... equilibrium ? 7.4 Improved Models of Social Systems Provisionally , the answer given in this book is yes . We should be able to plot a course from exponential growth into global equilibrium . No final recommendations have been offered ...
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