The compound binomial risk model with time-correlated claims

In this paper, we consider the compound binomial risk model with the time-correlated claims. It is assumed that every main claim will produce a by-claim but the occurrence of the by-claim may be delayed. We obtain the recursive formula of the joint distribution of the surplus immediately prior to ruin and deficit at ruin. Furthermore, the ruin probability is given by means of ruin probability and the deficit at ruin of the classical compound binomial risk model. Finally, we derive an upper bound for the ruin probability.     

Bivariate Recursive Equations on Excess-of-loss Reinsurance

This paper investigates bivariate recursive equations on excess-of-loss reinsurance. For an insurance portfolio, under the assumptions that the individual claim severity distribution has bounded continuous density and the number of claims belongs to R1 （a, b） family, bivariate recursive equations for the joint distribution of the cedent＇s aggregate claims and the reinsurer＇s aggregate claims are obtained.     

A Rapid Solid-phase Synthesis to Soluble Oligothiophene Molecular Wires

A novel method for the preparation of oligothiophene molecular wires is described via a bi-directional solid-phase synthesis. Using an alternating sequence of bromination and Stille coupling reactions, oligomers were obtained up to the heptamer in excellent yield and purity.     

SiO2-羟基表面上金属原子的第一性原理研究

采用第一性原理方法研究了SiO2-羟基表面上几种金属原子的吸附性质,发现In和Ga在SiO2-羟基表面上的结合很弱,而Fe,Co,Ni在该表面上与Si,O形成强的化学键.等势能面和扩散势垒计算表明In(Ga)的扩散激活能只有0.1-0.3 eV,表明这两种原子容易在表面上扩散.这些结果可以定性地解释纳米合成中的一些实验现象.     

拉长截面等离子体垂直位移不稳定性及其动力稳定

本文研究了拉长截面Tokamak上等离子体的垂直位移不稳定性。计算表明,其快速振荡部分由周围导体中感生的涡流稳定;其慢速漂移部分则需由主动稳定系统予以控制。本文提出一种动力稳定的方法。它在物理上是可行的,并具有技术上简单、较低的功率要求及有利的频率效应等优点。这些说明,这种动力控制方法是一种有吸引力的控制垂直位移不稳定性的手段。     

基于Intel 87c196kc的某机载设备随动系统数字控制器的实现

介绍了某机载光电设备随动系统控制器的设计与实现。该控制器是基于Intel公司87c196kc的数字控制器，设计中充分利用了87c196kc较强的运算能力及其它片内功能，使得控制器设计简捷、调整灵活、体积小，提高了系统的可靠性。     

碳掺杂β-FeSi2薄膜的电子显微学研究

本文利用透射电子显微镜对离子注入合成的β-FeSi2和β-Fe(C,Si)2薄膜进行了对比研究.电镜观察结果表明,选择C作为掺杂元素,能够得到界面平直、厚度均一的高质量β相薄膜,晶粒得到细化,β-FeSi2层稳定性提高.尤其在60kV、4×1017ions/cm2条件下注入直接形成非晶,在退火后会晶化为界面平滑、厚度均匀的β-FeSi2薄膜.因此从微结构角度考虑,引入C离子有益于提高β-FeSi2薄膜的质量.     

智能化多业务网络

首先从不同角度分析了通信服务商目前面临的环境,包括通信服务业的投资趋势、业务发展趋势、服务提供商的业务收入情况以及用户的需求;接着介绍了朗讯的智能化多业务网络的整体架构和解决方案;其中重点描述了智能化多业务网络在网络传输层、业务控制层和应用层上的智能化以及包括核心网络、城域网络在内的六大解决方案。     

偏振模色散统计特性的研究

利用动态方程研究了偏振模色散矢量的统计特性 ,分别用统计系综和频率系综两种方法进行数值模拟。数值结果表明 ,统计系综和频率系综两种方法的结果一致。在大归一化距离条件下 ,均方根时延的平方随归一化距离线性变化 ;偏振模色散矢量的各个分量服从高斯分布 ,差分群时延服从麦克斯韦分布 ;偏振模色散矢量弥散于整个邦加球     

Numerical Soliton and Oscillating Wave Solutions for Flierl-Petviashvili Equation in Plasmas

Numerical axisymmetric soliton and oscillating wave solutions for the Flierl-Petviashvili equation in plasmas are presented. Solution branch paradigm and examples are given. Some implications of results to ion drift wave as well as force-free field of magnetic equilibrium are briefly discussed.