应用随机数渐近线分布法评估飞机飞行安全

严重纵向人机耦合事件是公认的危及飞行安全问题 ,出现概率一般为 10 -6.若采用传统的频率统计法进行趋势预测 ,需要的样本数大于 10 7个 ,工程实际中是无法实现的 .为此 ,文中提出了有效的随机数渐近线分布法对其进行评估 .

Almost Regularity Conditions of Spectral Problems for a Second Order Equation

The asymptotic distributions are exactly solved for linearly independent solutions considering problem of the second order and for the coefficients of asymptotic distribution the recurrent formulas are obtained. Further, using obtained recurrent formulas the necessary and sufficient conditions for almost regularity of spectral problem for the equation of the second order is proved.