Environmental Engineering Reference
In-Depth Information
Fig. 8.20 S(x) in City C is nonlinear
Fig. 8.21 F(x) in City C is nonlinear
4
x
1
S
ðÞ¼
5100
þ
300
sin
:
5
ð
8
:
22
Þ
As in the other municipalities, the frequency function resembles a logistic curve.
In City C, this logistic curve seems to have a carrying capacity of 10. The initial
value was set at 0.0001 and the growth rate was adjusted until it best
it the model.
This yielded a growth rate of 0.29 and Eq.
8.23
for frequency:
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