空间RSCR四杆机构图解综合法的研究

根据空间RSCR四杆机构出现特殊位置的几何特征,运用旋转变换把空间问题转换为平面问题,对实现两特殊位置运动的空间RSCR曲柄摇杆机构的图解综合法进行了探讨。     

校园网络安全应急响应联动系统模型

网络安全应急响应联动系统的目的是充分协调地理上分布的资源,共同应对网络安全事件。以目前的应急响应技术为基础,结合校园网络安全的应急响应实践,建立了校园网络安全应急响应联动系统模型,分析了联动系统的体系结构、功能结构和安全策略。     

弧形连铸机结晶器四连杆机构振动误差计算

分析了DANIELI连铸机结晶器四连杆振动装置的结构型式，并在文献[1]的基础上建立了适合该振动装置振动误差计算的数学模型，并用FORTRAN语言编制了计算程序，验证计算表明该数学模型准确适用。     

玻璃器皿压机夹模机构的分析与研究

对夹模机构的两种结构型式-杠杆式夹模机构和连杆式夹模机构的结构、工作原理及受力情况进行了分析和研究.     

空气压缩机组联动控制系统改造

本文分析空压机原联动控制系统的运行特点，对系统进行改造，利用自制电子式两位差动可调控制器取代压力控制器，克服原系统的缺陷。达到了改造的目的。     

A hybrid clustering and graph based algorithm for tagSNP selection

TagSNP selection, which aims to select a small subset of informative single nucleotide polymorphisms (SNPs) to represent the whole large SNP set, has played an important role in current genomic research. Not only can this cut down the cost of genotyping by filtering a large number of redundant SNPs, but also it can accelerate the study of genome-wide disease association. In this paper, we propose a new hybrid method called CMDStagger that combines the ideas of the clustering and the graph algorithm, to find the minimum set of tagSNPs. The proposed algorithm uses the information of the linkage disequilibrium association and the haplotype diversity to reduce the information loss in tagSNP selection, and has no limit of block partition. The approach is tested on eight benchmark datasets from Hapmap and chromosome 5q31. Experimental results show that the algorithm in this paper can reduce the selection time and obtain less tagSNPs with high prediction accuracy. It indicates that this method has better performance than previous ones.     

一种改进磁链计算模型分析

准确获取异步电动机转子磁链信号在高性能电机控制系统中具有十分重要的意义。介绍了常用转子磁链计算的电压和电流模型,针对各自存在的部分问题,提出了一种基于磁链计算方程进行组合的改进计算模型。在此基础上,根据矢量控制理论,采用Matlab／Simulink软件设计了异步电机矢量控制系统。仿真结果表明了该理论的正确性和可行性。     

Allowing for missing genotypes in any members of the nuclear families in transmission disequilibrium test

The Transmission Disequilibrium Test (TDT) detects linkage between a marker and a disease-susceptibility locus in the presence of linkage disequilibrium. The TDT requires data on the genotypes of affected offspring and their parents, which might not always be available. For example, for late onset diseases it might be difficult to find parents still alive, or genotypes of offspring might not be available. Genotyping unaffected siblings, combining different genotype data sets, or assuming a model mechanism for missing parents have all been proposed to deal with missing genotypes in parents but not in offspring. In this paper, we propose a Mendel Inheritance-Transmission Disequilibrium Test (MI-TDT) to impute missing genotypes in any members of a family with two affected offspring. Our method does not require any of the remedies mentioned above but simply utilizes the fundamental property of Mendel Inheritance on the transmission of alleles from parents to offspring. Most importantly, the MI-TDT reassures researchers about the declared significant genes when incomplete data is ignored. We illustrate the MI-TDT by identifying significant genes in type 1 diabetes from the Warren families in the United Kingdom.     

防火墙与入侵检测系统联动的网络安全体系分析

该文在对防火墙和入侵检测技术原理进行探讨的基础上,重点分析了防火墙与入侵检测系统联动的内在原因、功能特点和实现方式。分析结果表明,二者联动所构筑的网络安全体系既提升了防火墙的机动性和实时反应能力,又增强了入侵检测系统的阻断功能,从而全面提高网络系统的整体安全防护能力。