基础

The harm of worms' outbreak becomes greater and greater. Such make worm detection and defense technology face an increasingly tough challenge. Attack Signature Automatically Generation technology is one of the key technologies, this paper focuses on the ASAG technology for research, its main jobs include: 1）Analyzed the research status of ASAG technology from the overall, described its design goals and evaluation criteria, and the current approaches' limitations is given. 2） After deeply researching and analyzing a various of ASAG systems, a basic framework for the network ASAG system is presented, and the detailed analysis of the main function of the components in the framework is also presented. 3）An attack capture model based on distributed honey-pots system is presented. This mode integrates the anomaly detection which based on the mode of dubiety score in the honey-pots, can do a second filter for the samples in honey-pots, and improve the purity of the samples captured. 4） A simple noise-resilience ASAG algorithm is presented, which used the behavioral characteristics of the worm outbreak to generate efficient signatures of samples in the suspicious dataset, which contains large amounts of noisy data, under the complex environment.

攻击特征自动提取技术是网络蠕虫防御技术的关键技术，本文围绕攻击特征自动提取技术开展研究工作，其主要工作包括： 1）对攻击特征自动提取技术的研究现状进行了综述，介绍其设计目标与评价标准，并指出了现有方法存在的局限性； 2）在深入研究与分析各种攻击特征提取系统的基础上，提出基于网络的攻击特征自动提取系统的基本框架，并详细分析框架中各部件的主要功能； 3）提出了基于分布式蜜罐系统的攻击样本捕获模型，该模型在分布式蜜罐系统的基础上，结合基于可疑度模型的异常检测，对蜜罐中的样本进行二次过滤，较好地提高了捕获样本的纯净度； 4）提出一种简单抗噪的攻击特征自动提取算法，该算法利用蠕虫爆发时的行为特征，在复杂环境下含有大量噪声数据的可疑样本训练集中提取有效的特征，降低对样本纯净度的依赖。

Based on the national"ninth·five years"key project——study on the equipment and technique of raising and transplanting seedlings as the kind of factory, combining the no-tillage specialty which can shorten the working period and reduce the intension of dust devil, the key parts of corn no-tillage transplanter has been studied which can improve both the transplanting speed and reliability, reduce the labour intension of operator, further more, the method of automatic controlling whole working course has been applied by using single-chip microcomputer, the bedrock is made for transforming this technique into social productivity.

本文在原来国家科技部"九五"攻关项目"工厂化育苗、移栽工艺及设备研究"的基础上，结合免耕工艺不仅缩短作业时间，而且可以对防止沙尘暴发生有利的特点，对可以提高栽植速度和工作可靠性、降低操作人员劳动强度的玉米免耕栽植机的关键部件进行了详细的研究，进一步采用单片机控制技术对其工作过程实现了自动化控制，为该技术尽快转化为社会生产力打好基础。

Information infrastructure is the basis for the development of e-commerce.

信息基础设施是发展电子商务的基础。

They are also aiming at the areas, including molecular control of neural differentiation from uncommitted ectoderm, molecular basis for diversity of neurons, molecular basis for fine positional information during early embryogenesis and in vitro differentiation of ES cells into neural tissues etc.

他们还致力于未成熟外胚层神经分化的分子控制；神经元多样性的分子基础；早期胚胎发育阶段，细微的位置信息的分子基础；进入神经组织的ES细胞的微分化等领域的研究。

At the very center of this system of ideas---the keystone---the base upon which all else is built, is the individual's "ego ideal", his "self-image", or his conception of himself.

在这个思想体系的最中心--最基础思想--其他思想均建立在其上的基础思想就是一个人的"自我理想"，他的"自我形象"，或自我概念。

At present, switching power amplifier becomes the research focus of power electrics field.

本文以开关功率放大器为基础，在分析引起开关功率放大器输出失真的原因的基础上，提出了一种开关功率放大器的新型控制方法。

The electrochemical performance for the research provides the theoretical basis for analysis and material basis.

为下面的电化学性能的研究提供了物资基础和理论分析基础。

I also selected physics fundamentals such as Electrodynamics, Quantum Theory and Electromagnetic Field Theory.

为了加强自己的物理基础，我也选了例如电动力学，量子理论，电磁场理论等基础物理课。

Based on the principle of electromagnetic induction based on the principle, using a solenoid-type vertical electromagnetic stirring method.

以电磁感应原理为基础原理为基础，采用螺线管型纵向电磁搅拌方式。

Then fracture models were measured using the electrometric method after fixed in the different fixation postures.

在此模型的基础上将部分单元假设成肉芽组织的弹性模量、泊松比和剪切模量，同样运用Super-Sap计算程序运行生成骨折线为横型、桡斜型和尺斜型三种腕舟骨腰部骨折模型，然后在这三种骨折模型的基础上通过力的加载后模拟得到腕关节在不同固定体位下各种工况的模型，共144个工况模型。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。