李攀 发表于 2014-5-16 22:35 
http://wenku.baidu.com/link?url=_g-S3PYvF9BDYUL9TfCCkAixfueDtywtZgIRvVd48c2MI9JB6TFEB_QH5MGFO-ntwkko ...
The term "economic contribution‟ is used to address the broader and more general case of the how the economic activity cycles through the region's existing economy. Meaning, the gross change in economic activity associated with an industry, event, or policy in an existing regional economy.
An economic contribution is defined as the gross changes in a region's existing economy that can be attributed to a given industry, event, or policy.
If the analysis is to be performed with a standard In-put-Output Model (IOM) then the appropriate measure of economic activity is total final demands .
If the analysis is to look at the effects of changes in output of an industry rather than final demands, then a Mixed Exogenous/Endogenous Variables Input-Output Model or an appropriately specified computable General Equilibrium model (CGE) is necessary.
I hope this help.
Thank you.