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Q2 Z2,(Q2) Z2(Q2) - Institute for Water Resources - U.S. Army

Q2 Z2,(Q2) Z2(Q2) - Institute for Water Resources - U.S. Army

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--_.—..---...........AawmarA<br />

D SA (X) will be of the <strong>for</strong>m<br />

•■• 04. Xf• 2<br />

eilkr.ZdYoeidsm.ankv •<br />

• .<br />

DSA (X) = 0t1 - x l - 2x2 - ". - w w<br />

where x h is one of the explanatory variables.<br />

e D SA (X)<br />

(20).21P, (X) x<br />

l<br />

'A ...,<br />

D<br />

[<br />

1+ e<br />

SA<br />

(X)<br />

]<br />

.2<br />

l' xl<br />

_)e _ 2<br />

21x rpr 06<br />

1<br />

L. A 1<br />

D (X)<br />

2<br />

p I e SA [Pr (XI<br />

A<br />

So,<br />

(21), Pr (X)<br />

A<br />

P (X)<br />

r<br />

A<br />

' D (X)<br />

xl e SA<br />

x<br />

1<br />

P (X)<br />

r<br />

A<br />

If x it is expected that<br />

1A'<br />

(22). Pr (X)<br />

A GO or<br />

)TA<br />

D (X)<br />

SA<br />

[<br />

2<br />

Pr 01 0<br />

A<br />

2<br />

Since<br />

•<br />

e<br />

D SA (X) ;PO and [p... (X1 11. 0, " 1 40 is<br />

s needed to insure)1) (XV ) 1T 0. This is as expected<br />

rA<br />

A<br />

•<br />

from the theoretical section, i.e. the sign of the own<br />

transport Tate to be negative.<br />

Cross rate elasticities and elasticities with respect<br />

to changes in the other explanatory variables may also be<br />

calculated.<br />

•<br />

§7

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