Environmental Engineering Reference
In-Depth Information
Fig. 8.6 F(x) in City A is nonlinear
Fig. 8.7 A nonlinear, logistic
S function approximating S
(x) in City A
that the logistic function
fits the nonparametric regression and this yields a value of
0.31. This results in Eq.
8.12
:
00045e
0
:
31x
0
:
F
ðÞ¼
ð
8
:
12
Þ
4
:
5
þ
0
:
0001 e
0
:
31x
ð
1
Þ
This equation is displayed in Fig.
8.8
.
Utilizing these functions and in conjunction with the discount rate and invest-
ment cost from above, a new cost of service function is derived:
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