World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 38
... initial depletion of resources probably does not have much effect on availability of the remainder . Through the ... initial NRI gives the natural - resource fraction remaining NRFR . NRFR.K = NR.K / NRI NRFR 7 , A - NATURAL - RESOURCE ...
... initial depletion of resources probably does not have much effect on availability of the remainder . Through the ... initial NRI gives the natural - resource fraction remaining NRFR . NRFR.K = NR.K / NRI NRFR 7 , A - NATURAL - RESOURCE ...
Page 50
... initial value is needed for capital investment in the year 1900. We assume here that the capital investment per capita in 1900 was 0.25 unit per person compared to the 1970 value of 1 unit per person . Because the initial value of ...
... initial value is needed for capital investment in the year 1900. We assume here that the capital investment per capita in 1900 was 0.25 unit per person compared to the 1970 value of 1 unit per person . Because the initial value of ...
Page 140
... INITIAL ( NATURAL - RESOURCE UNITS ) NATURAL - RESOURCE - FROM - MATERIAL MULTIPLIER ( DIMENSIONLESS ) NATURAL - RESOURCE - FROM - MATERIAL - MULTIPLIER TABLE NATURAL - RESOURCE USAGE NORMAL ( NATURAL RESOURCE UNITS / PERSON / YEAR ) ...
... INITIAL ( NATURAL - RESOURCE UNITS ) NATURAL - RESOURCE - FROM - MATERIAL MULTIPLIER ( DIMENSIONLESS ) NATURAL - RESOURCE - FROM - MATERIAL - MULTIPLIER TABLE NATURAL - RESOURCE USAGE NORMAL ( NATURAL RESOURCE UNITS / PERSON / YEAR ) ...
Contents
Introduction | 1 |
Structure of the World System | 17 |
A World Model Structure and Assumptions | 31 |
Copyright | |
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Common terms and phrases
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