There is a plethora of research literature about the diversification effect of stock portfolio overseas.

对股票投资组合国际多元化的效应的研究，国外的文献已经多如汗牛充栋了。

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Diversification of formation mechanism of regional industry brands results in differences to different degrees in their effect.

区域产业品牌形成机理的多样化导致区域产业品牌效应也存在不同程度的差异。

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The modularize production pattern not only has the effect on innovation, diversification and low-cost; but also changes the enterprise's network partnership between the supply chain.

模块化的生产模式不仅具有创新性、多样化和低成本等效应，同时也改变了供应链上企业之间的网络伙伴关系。

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The diversification effect that comes from investing in countries with low cross-correlations can result in both an increase in return and a reduction in volatility at the total portfolio level over the long term.

FORBES: Why Global Diversification Still Makes Sense

Investors also need to be made aware of the benefits of diversification and of the effect on their portfolios of tax rules and regulations.

ECONOMIST: Buttonwood

Under these circumstances, diversification among such sources is but a stop-gap solution that can, at best, have a temporary effect on oil supply and, hence, on national security.

CENTERFORSECURITYPOLICY: The Open Fuel Standard