基于随机失效率的网络抗毁性评价方法

由于对复杂网络的拓扑结构知之甚少,其抗毁性测度的研究一直是个比较困难的问题。从网络连通性的角度出发,在随机失效率的前提下对网络的抗毁性测度进行定义。并分别在只有选择性攻击和随机性攻击的情况下验证所提的全网连通度的有效性,进一步对无标度网络和随机网络的抗毁性能进行比较和分析。结果表明考虑了随机失效率的网络抗毁度定义更加确切有效。     

一种基于SMC和RD的隐私保护挖掘算法

针对当前的隐私保护关联规则挖掘算法在应用中存在的一些不足,如：在算法效率与计算精确度之间顾此失彼,提出了基于安全多方计算方法与随机干扰方法相结合的PPARMSR挖掘算法.该方法结合了安全多方计算方法的精确性和随机干扰方法的高效率,使用项集随机干扰矩阵同时干扰多属性,且兼顾它们的相关性,提前对候选频繁项集的剪枝,减少安全多方计算的处理量.通过试验验证了PPARMSR算法在保持隐私度的同时,还能够在计算精确度与运行效率之间实现较好的折中效果.     

一种天气雷达数据质量问题的理论分析与试验研究

针对新一代天气雷达在业务运行中低仰角观测时经常出现的相邻径向交替变化的条状回波(称为"马赛克"现象)的数据质量问题,分析了产生该现象的原因,提出了改进天气雷达观测模式,在低仰角采用较低的双脉冲重复频率组合或随机相位编码技术的解决方案。介绍了双脉冲重复频率技术扩展测速范围以及随机相位编码技术退距离模糊的基本原理和实现方法,并在新一代天气雷达上开展了数据质量提升试验。通过比较多种适配参数组合下实际天气过程的观测结果,验证了之前的理论分析。     

关于国有企业经营者激励机制的思考

对我国国有企业经营者激励机制的现状进行了分析，指出现行激励机制中存在的问题与不足，并就如何完善国有企业经营者激励机制进行了积极的思考和探索。     

无规电阻网络的等效电阻

无规电阻网络是指：电阻网络的结构和电阻阻值分布，有一者或两者都无规。本文基于并联变换和星形-网形变换，给出了求解无规电阻网络等效电阻的普适计算方法。     

随机森林方法在致病SNPs检测中的应用

通过全基因组关联研究发现了大量复杂疾病相关变异，近来关注的焦点又集中在了如何利用单核苷酸多态性数据进行深入分析，期待发现更多复杂疾病的易感基因。随机森林是一种新型的集成分类决策器，可以在对样本分类的同时，计算预测变量的重要性值。该文将随机森林方法应用于全基因组数据，实验结果表明该方法可以作为致病SNPs检测的有效参考方法。     

Numerical study of threshold gain behavior for a THz random laser in a two-dimensional active disordered medium with a three-level atomic system

By numerically solving Maxwell’s equations and rate equations in a two-dimensional (2D) active random media made of ruby grains with a three-level atomic system, the threshold gain behavior for a THz random laser is investigated. The spectral intensity variation with the pumping rate is calculated for both the transverse magnetic (TM) field and the transverse electric (TE) field. The computed results show that THz random lasing could occur in a 2D disordered medium for both the TM and TE cases. Further analysis reveals that the THz lasing threshold for TM fields is lower than that for TE fields.     

The excitation energy transfer between β-Car and Chla molecules in PS Ⅱ core antenna complexes CP43 and CP47

The excitation energy transfer efficiency between β-Car and Chla molecules in purified CP43 and CP47 was calculated by comparing absorption and fluorescence excitation after normalization at 550 nm, CP43 had an energy transfer efficiency of 29.1% while the CP47 had an energy transfer efficiency of 62.8%, proving that excitation energy was transferred between β-Car and Chla molecules in CP43 and CP47 at normal conditions. The excitation energy transfer between β-Car and Chla molecules in CP43 and CP47 may occur through the “Dexter” mechanism and the distance between these two kinds of pigments should be less than 1 nm. In addition, the results were also used to discuss the conformational relationship between β-Car and Chla molecules in CP43 and CP47.     

RESEARCH NOTES On the support of super-Brownian motion with super-Brownian immigration

The support properties of the super Brownian motion with random immigration Xρ1 are considered,where the immigration rate is governed by the trajectory of another super-Brownian motion ρ. When both the initial state Xρo of the process and the immigration rate process ρo are of finite measure and with compact supports, the probability of the support of the process Xρi dominated by a ball is given by the solutions of a singular elliptic boundary value problem.     

随机Taylor级数的增长级

讨论了复平面上的随机Ｔａｙｌｏｒ级数ｆｗ（ｚ）的增长级，证明了ｆｗ（ｚ）沿任一射线的增长级几乎必然（ａ．ｓ．）为ρ。