World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 5
... person requires one unit of land for " occupancy space . " Occupancy space is the land for housing , commercial activity , transportation , and pollution dissipation . Suppose also that for adequate nourishment each person requires two ...
... person requires one unit of land for " occupancy space . " Occupancy space is the land for housing , commercial activity , transportation , and pollution dissipation . Suppose also that for adequate nourishment each person requires two ...
Page 55
... person on pollu- tion generation . For conditions in the year 1970 it has a defined value of 1. The coefficient POLN ... person per year to produce 3.6 billion units in one year . ( Pollution was defined for 1970 as being one pollution ...
... person on pollu- tion generation . For conditions in the year 1970 it has a defined value of 1. The coefficient POLN ... person per year to produce 3.6 billion units in one year . ( Pollution was defined for 1970 as being one pollution ...
Page 140
... PERSON ) EFFECTIVE - CAPITAL - INVESTMENT RATIO NORMAL ( CAPITAL UNITS / PERSON ) FOOD COEFFICIENT ( DIMENSIONLESS ) FOOD COEFFICIENT NO . 1 ( DIMENSIONLESS ) FOOD - FROM - CROWDING MULTIPLIER ( DIMENSIONLESS ) FOOD - FROM - CROWDING ...
... PERSON ) EFFECTIVE - CAPITAL - INVESTMENT RATIO NORMAL ( CAPITAL UNITS / PERSON ) FOOD COEFFICIENT ( DIMENSIONLESS ) FOOD COEFFICIENT NO . 1 ( DIMENSIONLESS ) FOOD - FROM - CROWDING MULTIPLIER ( DIMENSIONLESS ) FOOD - FROM - CROWDING ...
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