World DynamicsThe "system dynamics" approach to economics as developed at MIT. |
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Page 18
... created by accumulating the net difference between the money flows in and out . In financial accounting statements , the level variables are those found on the balance sheet , whereas those on the profit and loss statement represent ...
... created by accumulating the net difference between the money flows in and out . In financial accounting statements , the level variables are those found on the balance sheet , whereas those on the profit and loss statement represent ...
Page 80
... created by the resource shortage . Of course , conflict for possession of resources could reverse that conclusion . This process of a solution creating a new problem has defeated many of our past national and world programs and will ...
... created by the resource shortage . Of course , conflict for possession of resources could reverse that conclusion . This process of a solution creating a new problem has defeated many of our past national and world programs and will ...
Page 126
... created in the past . The " mathematical " notation that is used for describing a dynamic model is unambiguous . It ... creation of a suitable model struc- ture . How is the available information about relationships and motivations to be ...
... created in the past . The " mathematical " notation that is used for describing a dynamic model is unambiguous . It ... creation of a suitable model struc- ture . How is the available information about relationships and motivations to be ...
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