Study on ripple effect and perturbation effect of indirect economy effect;

The core concern of input-output analysis is ripple effect.

Based on constructing software architecture model by Petri net(PSA),can calculate the relative quantity of component effect via the reachable marked graph of Petri net and spend less time,and every ripple-effect of SA evolution caused by component deletion,addition,modification,division and combination is described respectively in this thesis.

Depending on matrix shift and calculation,ripple-effect of ontology evolution can be analyzed and its quantity can be ascertained.

Then the research constructs the theoretical model of its spread effect on social development of international sports competition events,basing on the theory of sociology;and makes a comprehensive analysis on it.

When an economic system is completely closed, spread effect will diffuse locally; while it sopen, part of the effect will be expanded to other places through imported intermediate products.

In this paper we investigates the tax effect and tax clientele effect of Chinese stock markets during 2002 to 2007,the results are consistent with the hypothesis that price changes on ex-dividend days reflect the relative taxation of dividends and capital gains for the "representative" investor,and there are tax clientele effect in Chinese stock markets.