World Dynamics1971 |
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Page 14
... Mental Models of Social Systems There is nothing new in the use of models to represent social systems . Every- one uses models all the time . Every person in his private life and in his community life uses models for decision making ...
... Mental Models of Social Systems There is nothing new in the use of models to represent social systems . Every- one uses models all the time . Every person in his private life and in his community life uses models for decision making ...
Page 15
... mental models are based . When assumptions are clearly stated , they encourage deeper discussion and lead to better selections from the vast numbers of frag- ments which are contained in our mental models . Making a computer model ...
... mental models are based . When assumptions are clearly stated , they encourage deeper discussion and lead to better selections from the vast numbers of frag- ments which are contained in our mental models . Making a computer model ...
Page 142
... Mental models ; see Models Models computer , 15 improved , 125-127 information for , 17 , 68 , 93 , 126 language , 126 mental , 14-15 , 123 , 126 of social systems , 15 as a theory , 15 , 67 use of , 1 , 14 Multipliers , 33 Natural ...
... Mental models ; see Models Models computer , 15 improved , 125-127 information for , 17 , 68 , 93 , 126 language , 126 mental , 14-15 , 123 , 126 of social systems , 15 as a theory , 15 , 67 use of , 1 , 14 Multipliers , 33 Natural ...
Contents
Introduction | 1 |
Structure of the World System | 17 |
A World Model Structure and Assumptions | 31 |
Copyright | |
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1970 conditions accumulation agricultural land assumed assumptions behavior birth rate normal birth-control program BRFM BRMM BRN1 capital investment CAPITAL UNITS CAPITAL UNITS/PERSON CAPITAL-INVESTMENT DISCARD capital-investment multiplier capital-investment ratio CAPITAL-INVESTMENT-IN-AGRICULTURE FRACTION cause Chapter CIAF CIGN1 Club of Rome coefficient computer model crowding ratio curve death rate normal decline DRFM dynamic ECIR effect effective-capital-investment ratio equations equilibrium exponential growth food production food ratio food supply FPMT FRACTION/YEAR in-agriculture fraction increase industrialization INTERPOLATION limit LOGICAL FUNCTION material standard mental models MULTIPLIER DIMENSIONLESS natural resources natural-resource Natural-resource-usage rate negative loop NR=N NREM NREMT NRUN1 POLN1 POLAT POLCM pollution absorption pollution crisis pollution-absorption population and capital population density PRESENT ORIGINAL pressures ratio CIR RATIO DIMENSIONLESS result rise Section sector shortage social systems SQUARE KILOMETERS standard of living system levels TABHL TABLE LOOK TIME.K tion units per person UNITS/PERSON/YEAR UNITS/YEAR usage rate variable world model world population world system