shadow factor


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shadow factor

A multiplication factor derived from the sun's declination, the latitude of the target and the time of photography, used in determining the heights of objects from shadow length. Also called tangent altitude (tan alt).
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We reject the standard market price model in favor of a more general one that allows for cost minimization subject to shadow factor prices, which can differ from market prices as a result of regulation.
The shadow factor cost shares are obtained by logarithmic differentiation of [C.