The paper discusses the ruin probability of discrete risk mode and works out the expressing pattern easier for calculating ruin probability with the claim amount distribution function known.

对一种离散风险模型的破产概率进行研究，并在理赔额分布函数已知的情况下推导出了破产概率的更易于计算的表达式。

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"A general risk-off mode predominates, the Fed meeting yesterday having been viewed as a crushing disappointment by equity markets, " said Chris Beauchamp, market analyst at IG.

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So, despite the improvement in the Japan situation on Friday and the declaration of a no-fly zone over Libya, traders decided to avoid the potential headline risk and went back to risk-off mode into the close.

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But because of the great work of law enforcement, National Guard, Coast Guard, making sure that folks were out in rescue mode rapidly, even in some cases at risk of their own lives, no lives were lost.

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