Research of the Comparing of the Influence of Enterprises Innovation Investment to Urban Economy in Beijing, Tianjin and Shanghai—Based on Panel Data during 1989-2008

摘要

Analyzing and comparing the influence of enterprises S&T input to urban economy in 3 super large city of Beijing, Tianjin and Shanghai by using panel data from 1989-2008 processed byEviews5.0, the result indicates enterprises S&T activities investment impacts the urban economypositively. In order to enhance the influence of enterprises innovation investment to urban economy, all of the three cities must increase entreprises innovation fund investment and increasethe innovation worker's efficiency.