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In order to study the monitoring and early warning capabilities of laser wind radar in aviation meteorological support. A typical wind-shear weather evolution at Xining Plateau Airport was analyzed on 2019-04-10, by using multiple modes measure data of laser wind radar, and then compared with the existing data of wind measurement equipment and the data reported by the crew at the airport. The results show that during the wind shear detection process, the laser wind radar can clearly detect the structure, position, height, and movement direction of the wind shear. The laser wind radar can achieve the early warning of wind shear about 10min ahead of the self-view data. The results of the Lidar monitoring of the wind shear process are in good agreement with the results reported by the unit. These conclusions have certain reference and guidance significance for civil aviation airports using laser wind radar to forecast wind shear weather and ensure flight safety. [ABSTRACT FROM AUTHOR]

In this article, we study large deviations for non random difference ∑n1(t)j = 1X1j− ∑n2(t)j = 1X2jand random difference ∑N1(t)j = 1X1j− ∑N2(t)j = 1X2j, where {X1j,j⩾ 1} is a sequence of widely upper orthant dependent (WUOD) random variables with non identical distributions {F1j(x),j⩾ 1}, {X2j,j⩾ 1} is a sequence of independent identically distributed random variables,n1(t) andn2(t) are two positive integer-valued functions, and {Ni(t),t⩾ 0}2i = 1withENi(t) = λi(t) are two counting processes independent of {Xij,j⩾ 1}2i = 1. Under several assumptions, some results of precise large deviations for non random difference and random difference are derived, and some corresponding results are extended. [ABSTRACT FROM PUBLISHER]

Assume that there are two types of insurance contracts in an insurance company, and theith related claims are denoted by {Xij,j⩾ 1},i= 1, 2. In this article, the asymptotic behaviors of precise large deviations for non random difference ∑n1(t)j = 1X1j− ∑n2(t)j = 1X2jand random difference ∑N1(t)j = 1X1j− ∑N2(t)j = 1X2jare investigated, and under several assumptions, some corresponding asymptotic formulas are obtained. [ABSTRACT FROM PUBLISHER]