World Dynamics1971 |
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Page 18
... represented by using only levels and rates . The two kinds of variables are necessary but at the same time sufficient for representing any system . Full explanation of these and other prin- ciples of structure and the principles of the ...
... represented by using only levels and rates . The two kinds of variables are necessary but at the same time sufficient for representing any system . Full explanation of these and other prin- ciples of structure and the principles of the ...
Page 53
... represents an average life which is the reciprocal , or 40 years . Capital includes buildings , roads , and factories . It also includes education and the results of scientific research , for the latter are not represented elsewhere in ...
... represents an average life which is the reciprocal , or 40 years . Capital includes buildings , roads , and factories . It also includes education and the results of scientific research , for the latter are not represented elsewhere in ...
Page 58
... represents the poisoning and destroying of the pollution - cleanup mechanisms . Small amounts of pollution are dissipated quickly . But large amounts can have a cumulative effect by inter- fering with the natural processes of ...
... represents the poisoning and destroying of the pollution - cleanup mechanisms . Small amounts of pollution are dissipated quickly . But large amounts can have a cumulative effect by inter- fering with the natural processes of ...
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