The tail of random variable's distribution is the focus of the risk analysis because the event with small probability often occurs in this area.
在风险分析中，随机变量的尾部一直是风险分析的重点，因为灾难事件往往就在这个区域里发生。
2
These are small group discussions led by a lecturer at which closer analysis of a particular area is undertaken.
这些时小组讨论，它由每一位讲师引导，对某个领域进行更为深入的分析。
3
Conclusion: This study model may be useful for various population level of data and materials in smallarea, also for analysis of risk factor of other rare disease such as other tumor.