With the theory of stochastic differential equation, the authors discuss a problem of a class of risk investment portfolio with stochastic character.

利用随机微分方程理论，对一类具有随机特征的风险投资组合问题进行深入研究。

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We obtain two new equivalent conditions of one class of distributions which can dominate all lightly heavy-tailed distributions. They can turn out to be useful in large deviation and risk theory.

给出了能控制一切轻度重尾分布的分布族的两个新的等价条件，它们可以在大偏差理论及风险理论中发挥一定的作用。

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Then introduce the related testing theory and testing process model. Analyze enterprise-class storage software quality risk management according to its features.

然后介绍了论文涉及到的测试理论、测试过程模型，并根据存储软件的功能特点分析了企业级存储软件的质量风险管理。

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