This thesis focuses on a kind of special social effect whose name is the derivative negative effect of report.

however,if it s improperly dealt with,it has a negative effect on the academic standardization.

University of London as examples,and analyses their status,char- acteristics and negative effects.

The paper maintains that knowledge spillovers are the intrinsic cause of derivative effect in industry clusters,and the derivative effect is some expression of knowledge spillovers under the specific regional and cultural conditions of a cluster.

Centralizing the analysis on the derivative effect of Beijing\'s hi-tech industrial clusters,the paper classifies derivative effect into two aspects:one is firm-oriented derivative effect,another is technology-oriented derivative effect.

We should describe models on the basis of facts to prevent unilateralism and absolutization, establish models according to audiences to prevent negative effect of mass media, and erect models with true feelings and details to prevent formula thinking.