基于风险价值不能准确度量风险以及缺乏次可加性。
Valve at Risk is unable to measure the risk exactly and lack of subadditive.
基于风险价值不能准确度量风险以及缺乏次可加性这些缺点，目前国际上有人提出用损失期望值来测量风险。
At last, as valve at Risk is unable to measure the risk exactly and lack of subadditive , therefore, it is suggested in the international that Expected shortfall should be used to measure risk.
迭加定理与线性系统的关系．迭加定理的齐次性和可加性，作了较详细的论证。
A detailed demonstration about the provement, the relation with the linear system, the homogeneity property and the additivity property of the superposition theorem is also given.
“上一次信贷成本抑制，后期费用很低，发卡商可加以利用；并可更灵活重新定价，”摩根·士丹利分析师，BetsyGraseck说。
"The last time credit costs spiked, the late fees were much lower, so card issuers could turn to that and reprice more nimbly," a Morgan Stanley analyst, Betsy Graseck, said.
“上一次信贷成本抑制，后期费用很低，发卡商可加以利用；并可更灵活重新定价，”摩根·士丹利分析师，BetsyGraseck说。
"The last time credit costs spiked, the late fees were much lower, so card issuers could turn to that and reprice more nimbly," a Morgan Stanley analyst, Betsy Graseck, said.
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