World dynamicsWright-Allen Press, 1971 - 142 pages |
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Page 33
... rate normal BRN states the birth rate per year as a fraction of the population . Birth rate BR , as defined here , is the total rate at which people are being added to the popula- tion . It is measured in people per year . In demography ...
... rate normal BRN states the birth rate per year as a fraction of the population . Birth rate BR , as defined here , is the total rate at which people are being added to the popula- tion . It is measured in people per year . In demography ...
Page 34
... rate normal DRN . Taking a world population of 1.6 billion in 1900 and a world population of 3.6 billion in 1970 , the cumulative growth rate has averaged 1.2 % per year . This is the difference between the birth rate and the death rate ...
... rate normal DRN . Taking a world population of 1.6 billion in 1900 and a world population of 3.6 billion in 1970 , the cumulative growth rate has averaged 1.2 % per year . This is the difference between the birth rate and the death rate ...
Page 39
... normal NRUN and multiplied by the natural- resource - from - material ... normal NRUN is defined as 1 natural re- source unit per person per year , representing the 1970 world average usage rate . NRUR . KL ( P. K ) ... Rate NRUR Death Rate DR.
... normal NRUN and multiplied by the natural- resource - from - material ... normal NRUN is defined as 1 natural re- source unit per person per year , representing the 1970 world average usage rate . NRUR . KL ( P. K ) ... Rate NRUR Death Rate DR.
Contents
Introduction | 1 |
Structure of the World System | 17 |
A World Model Structure and Assumptions | 31 |
Copyright | |
6 other sections not shown
Common terms and phrases
1970 conditions accumulation agricultural land assumed assumptions behavior birth rate normal birth-control program BRFM 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 POLAT pollution absorption pollution crisis POLLUTION UNITS pollution-absorption population and capital population density PRESENT ORIGINAL pressures QL-Q 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