World Dynamics |
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Page 22
Birth rate normal BRN BR Birth rate Population DR Death rate 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 . For example , the value of BRN
is ...
Birth rate normal BRN BR Birth rate Population DR Death rate 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 . For example , the value of BRN
is ...
Page 33
2 Birth Rate BR The birth rate is part of the positive - feedback loop shown in
Figure 2 - 2 . Basic birth rate depends on population P and on a coefficient BRN .
Birth rate normal BRN states the birth rate per year as a fraction of the population
.
2 Birth Rate BR The birth rate is part of the positive - feedback loop shown in
Figure 2 - 2 . Basic birth rate depends on population P and on a coefficient BRN .
Birth rate normal BRN states the birth rate per year as a fraction of the population
.
Page 34
2 % difference and would be compatible with observed demographic rates for the
first threequarters of this century . The reciprocal of death rate normal DRN of 0 .
028 implies a life expectancy at birth of 36 years ( including infant mortality ) .
2 % difference and would be compatible with observed demographic rates for the
first threequarters of this century . The reciprocal of death rate normal DRN of 0 .
028 implies a life expectancy at birth of 36 years ( including infant mortality ) .
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Contents
Introduction | 1 |
Structure of the World System | 17 |
A World Model Structure and Assumptions | 31 |
Copyright | |
5 other sections not shown
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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 major material standard means mode MULTIPLIER DIMENSIONLESS natural resources natural-resource normal NREM occurs peak person policies pollution crisis pollution ratio POLR population possible present PRESENT ORIGINAL pressures probably processes rate normal reaches reduced relationship remaining represents result rise sector shortage shown shows social systems space standard of living stop structure suppressed taken tion understand UNITS usage variable world system
Bibliographic information
| Title | World Dynamics |
| Authors | Jay W. Forrester, JAY W AUTOR FORRESTER |
| Edition | 2 |
| Publisher | Wright-Allen Press, 1971 |
| Length | 142 pages |
| Export Citation | BiBTeX EndNote RefMan |