基于异常行为特征的僵尸网络检测方法研究

基于僵尸网络通信及网络流量的异常行为,可以有效检测出僵尸频道。介绍了通过对主机响应信息的异常分析,进而判断出当前IRC频道是否为一个僵尸频道的检测算法。由此引入了基于异常行为的僵尸频道检测模型,该模型分类提取IRC频道的主机响应信息,结合检测算法分析得出结论。实验结果验证了该模型的有效性。     

RUP在小型J2EE项目中的应用

RUP是IBM公司的一个软件过程产品,适合于规模比较大的软件项目和大型的软件开发组织或团队。在实际中,软件项目团队根据自身客观条件的限制和技术的影响,应该对RUP进行必要的裁剪,从而最大限度地发挥RUP的作用。论文讲述了如何把RUP应用到小型项目团队开发J2EE应用系统的过程中,并且结合J2EE技术的特点从项目管理、架构设计、开发和测试等方面重点阐明了对RUP的裁剪。     

赤泥的基本性质及其工程特性

本文系统地揭示了赤泥的基本性质和工程特性,对限制赤泥的危害、利用和改造郝泥、变废料为建材具有实际意义。     

用磁场传感器KMZ52设计的电子指南针

介绍了目前用于定位系统中的电子指南针的工作原理，详细论述了磁场传感器芯片KMZ52的工作原理，给出了用KMZ52磁场传感器设计电子指南针的总体设计方案和电路，同时给出了设计中的一些特殊处理方法。     

低压厂用电保护装置选型及定值整定的探讨

<正>低压厂用电的继电保护装置配置及定值整定仅有《厂用电继电保护整定计算导则》(以下简称《导则》)、《火力发电厂厂用电设计技术规程》(以下简称《规程》)等相关依据。实际的生产运行中因低压厂用电继电保护装置设计选型不当、定值整定计算不合理等造成的保护拒动或误动,甚至机组跳闸的事件时有发生,本文从机组运行中实际发生的案例出发对低压厂用电继电保护装置设计选型、定值整定等问题提出一些建议。     

CSNS四极陶瓷真空盒磁控溅射镀TiN膜研究

介绍了中国散裂中子源（CSNS）快循环同步加速器（RCS）中四极陶瓷真空盒内表面镀TiN膜技术与成膜系统装置。采用磁控溅射法,通过在绝缘体长直管道外表面安装金属屏幕罩来提供同轴电场的方法,解决了镀膜均匀性的问题。镀膜样品Ti、N比在0.9~1.1范围内,膜厚为100nm左右,附着力达到要求,总体满足设计指标,完成了CSNS四极陶瓷真空盒样机的镀膜。     

新型单级可升压逆变器

提出了一种新型单级可升压逆变器拓扑,利用逆变桥的直通零矢量与耦合电感储能及转移升压技术,实现了逆变器直流母线电压的升压调节,仅使用一级变换电路,消除了传统电压源型逆变器的局限,适合于输入电压较大范围变化,输出恒压的逆变场合.以应用于风力发电系统中功率变换的新型单级可升压三相逆变器为例,详细阐述其工作机理,并通过仿真和实...     

鹿寨县改造渍害田的探讨

鹿寨县地处广西壮族自治区中部,土地面积506.5万亩,耕地面积63.85万亩,水田面积37.08万亩,其中渍害低产田5.54万亩。建国以来,随着基本建设的发展、全县耕地面积逐年减少,人均水田面积仅有九分。“无农不稳,无粮则乱”,改造渍害田,对发展农业生产致关重大。     

Long-term settlement prediction of high-speed railway bridge pile foundation

The process and characteristics of loading on high-speed railway bridge pile foundation were firstly obtained by means of field research and analysis, and the corresponding loading function was presented. One-dimensional consolidation equation of elastic multilayered soils was then established with single drainage or double drainages under multilevel loading. Moreover, the formulas for calculating effective stress and settlement were derived from the Laplace numerical inversion transform. The three-dimensional composite analysis method of bridge pile group was improved, where the actual load conditions of pile foundation could be simulated, and the consolidation characteristics of soil layers beneath pile were also taken into account. Eventually, a corresponding program named LTPGS was developed to improve the calculation efficiency. The comparison between long-term settlement obtained from the proposed method and the in-situ measurements of pile foundation was illustrated, and a close agreement is obtained. The error between computed and measured results is less than 1 mm, and it gradually reduces with time. It is shown that the proposed method can effectively simulate the long-term settlement of pile foundation and program LTPGS can provide a reliable estimation.