World Dynamics |
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Page 23
Population increases birth rate which increases population , and the criteria for a
positive - feedback loop are met . If there ... population would increase forever
according to the exponential growth pattern created by positive - feedback loops .
Population increases birth rate which increases population , and the criteria for a
positive - feedback loop are met . If there ... population would increase forever
according to the exponential growth pattern created by positive - feedback loops .
Page 24
In the negative loop capitalinvestment discard normal CIDN with a value of 0 .
025 gives the ... 4 Pollution Loops Another positive - feedback loop exists in the
pollution sector in conjunction with a negative loop as shown in Figure 2 - 4 .
In the negative loop capitalinvestment discard normal CIDN with a value of 0 .
025 gives the ... 4 Pollution Loops Another positive - feedback loop exists in the
pollution sector in conjunction with a negative loop as shown in Figure 2 - 4 .
Page 25
But the positive loop determines the time required for a fixed fraction of any
existing pollution to be dissipated . Here the time - constant depends on the
pollution load itself . When there is little pollution , pollution can be dissipated
quickly .
But the positive loop determines the time required for a fixed fraction of any
existing pollution to be dissipated . Here the time - constant depends on the
pollution load itself . When there is little pollution , pollution can be dissipated
quickly .
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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 material standard means mode MULTIPLIER DIMENSIONLESS natural resources natural-resource normal NREM occurs peak person policies pollution absorption pollution crisis pollution ratio POLR population possible 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 SWITCH TABLE taken tion understand UNITS usage variable world system