World dynamicsWright-Allen Press, 1971 - 142 pages |
From inside the book
Results 1-3 of 41
Page 33
... BIRTH RATE ( PEOPLE / YEAR ) BR DR PI - DEATH RATE ( PEOPLE / YEAR ) ยท POPULATION , INITIAL ( PEOPLE ) 1 , L 1.1 , N 1.2 , C 3.2 Birth Rate BR The birth rate is part of the positive - feedback loop shown in Figure 2-2 . Basic birth rate ...
... BIRTH RATE ( PEOPLE / YEAR ) BR DR PI - DEATH RATE ( PEOPLE / YEAR ) ยท POPULATION , INITIAL ( PEOPLE ) 1 , L 1.1 , N 1.2 , C 3.2 Birth Rate BR The birth rate is part of the positive - feedback loop shown in Figure 2-2 . Basic birth rate ...
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 46
... birth rate is assumed to drop to 10 % of what it would otherwise be . BRPM 1.5 BRPMT Eq . 18.1 1.0 0.5 10 20. Figure 3-8 Birth - rate - from - food multiplier vs. food ratio . Figure 3-9 Birth - rate - from - pollution multiplier. 46 ...
... birth rate is assumed to drop to 10 % of what it would otherwise be . BRPM 1.5 BRPMT Eq . 18.1 1.0 0.5 10 20. Figure 3-8 Birth - rate - from - food multiplier vs. food ratio . Figure 3-9 Birth - rate - from - pollution multiplier. 46 ...
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