World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 8
... possible alternative futures depending on whether population growth is eventually suppressed by shortage of natural resources , by pollution , by crowding and conse- quent social strife , or by insufficient food . Malthus dealt only ...
... possible alternative futures depending on whether population growth is eventually suppressed by shortage of natural resources , by pollution , by crowding and conse- quent social strife , or by insufficient food . Malthus dealt only ...
Page 104
... possible in the past when technology was able to run ahead of population and exploit land and natural resources faster than population grew . But technological solutions become less possible as the ultimate world limits are approached ...
... possible in the past when technology was able to run ahead of population and exploit land and natural resources faster than population grew . But technological solutions become less possible as the ultimate world limits are approached ...
Page 119
... possible pressures raises major issues of humanitarianism and personal rights . The challenge is to decide the balance of pressures that will be effective and at the same time most acceptable . As a background to the deliberations on ...
... possible pressures raises major issues of humanitarianism and personal rights . The challenge is to decide the balance of pressures that will be effective and at the same time most acceptable . As a background to the deliberations on ...
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