World dynamicsWright-Allen Press, 1971 - 142 pages |
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Page 22
Jay Wright Forrester. Birth rate normal BRN BR Birth rate P 2 Population DR Death rate 10 DRN Death rate normal the normal use of the terms birth rate and death rate and are the fraction of the population that is born or dies each year ...
Jay Wright Forrester. Birth rate normal BRN BR Birth rate P 2 Population DR Death rate 10 DRN Death rate normal the normal use of the terms birth rate and death rate and are the fraction of the population that is born or dies each year ...
Page 33
... 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 ... Birth Rate BR.
... 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 ... Birth Rate BR.
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 ...
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
accumulation action actual agriculture appear assumed assumptions average become behavior billion birth rate capital investment Capital-investment cause Chapter consequences continue created crowding curve death rate decline defined depends described developed discard discussed dynamic effect environment equations equilibrium examine existing expect factor falling Figure food production food ratio forces fraction further future gives greater grow growth higher improve increase indicated industrialization influence initial land less limit LOGICAL FUNCTION loop lower material standard means mode MULTIPLIER DIMENSIONLESS natural resources natural-resource normal NREM NRUN1 occurs ORIGINAL peak person policies pollution crisis pollution ratio POLN1 POLR population possible present pressures probably processes raise rate normal reaches reduced relationship remaining represents result rise sector shortage shown shows social systems space standard of living stop structure suppressed TABLE taken tion units usage variable world system