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Generally, the traditional Intrusion Detection Techniques can be categorized into anomaly detection or misuse detection. Based on the mechanism of computer immune system, this paper presents a new anomaly detection technique to detect intrusion into computer system. In this technique, a Markov chain model is used to represent a temporal profile of normal behavior of a process. The Markov chain model of normal profile can be created by learning the historic data of the sequence of system calls produced by privileged processes running on UNIX system.

传统的入侵检测技术,依照所基于的原则不同,通常分为误用入侵检测与异常入侵检测,本文在入侵研究中所采用的计算机系统免疫思想的基础上,提出了一种新的异常入侵检测技术,通过对特权进程系统调用序列的历史数据的学习,用马尔可夫链模型来建立特权进程的正常时态行为轮廓

Both silhouette preserving and shading preserving criteria are satisfied by applying a new error metric-constrained normal cone to view-independent simplification.

算法为地表的简化提出一种新的基于受限法向锥的误差计算方法,使得模型简化具有轮廓保持和光照保持特性。

A new technology,which is called non-interference normal tracking for NC curve grinding was presented.

将快速点磨削技术引入到曲线磨削过程中,提出了曲线磨削中砂轮对工件轮廓实施法向跟踪磨削的新方法。

By taking advantage of normal mapping, only the silhouette to current viewpoint is refined and transmitted, and consequently the amount of patches needed to transfer each frame is greatly reduced.

该算法利用法向映射提高传输和绘制的效率,然后随着视点的变化动态细化和传输当前视点下轮廓部分的参数面片信息,从而最大限度地减少了模型传输时面片的数量。

The algorithm uses a Markov process, making use of a large number of normal data transfer training probability matrix to construct the normal data behaviour profile, and it raises the efficiency of detection by the choice of detection window or setting a certain threshold.

该算法采用了一阶马尔科夫过程,利用大量正常数据训练概率转移矩阵,构造正常数据的轮廓,并通过对检测窗口和阈值的选择提高检测效率。

The most basic contour that can be considered for a nozzle is a truncated cone.

最基本的轮廓,可以被视为一个喷嘴是一个截断锥。

The main conclusions from the works presented in this thesis can be as this: for the Galactic OH 1612MHz masers, the radiative pumping mechanism coexists with other mechanisms while some other unresolved problems need to be solved after the launch of more advanced space infrared spectrometer and the more reliable identification of the evolutionary status of the maser bearing infrared sources;the asymmetrical 53.3μm absorption line profile could become a powerful tool to assist us to observationally discriminate the radiative pumping mechanism from other pumping mechanisms in the OH masers.This is the English version of my PhD thesis.

通过本论文的研究工作,我们可以得到这样的结论:在银河系内的OH 1612MHz脉泽中,辐射抽运机制与其它抽运机制并存,而还有一些未解决的问题需要等待更先进的空间红外光谱观测设备的使用并与天体类型证认工作相配合加以解决;不对称的53.3微米吸收线轮廓特征有可能成为帮助我们从观测上对OH脉泽的辐射抽运机制加以鉴别的有力工具。

Based on image we study the tool path generation technology and problem of tool path planning. We put forward an algorithm for self-discrimination of island relation and an automatic intersected method of the region machining unit, which can judge the relationship among any plane obturate contour line effectively and swiftly. We also study the tool path generation technology of two-dimensional machining, basso-relievo machining, three-dimensional lifting-pen machining. Meanwhile, we put forward an optimize approach of tool path, which improve the efficiency of engraving.

研究了图像的刀具路径生成技术与轨迹规划问题,提出了基于射线的岛屿关系自动判断和区域加工单元的自动分割方法,有效、快速地判断了平面任意封闭轮廓线之间的关系,研究了平面任意区域填充加工、浮雕加工、三维提笔加工的刀具路径生成的技术,提出了刀具路径优化方法,提高了雕刻加工的质量和效率。

We put forward an algorithm for self - discrimination of island relation and an automatic intersected method of the region machining unit , which can judge the relationship among any plane obturate contour line effectively and swiftly . we also study the tool path generation technology of two - dimensional machining , basso - relievo machining , three - dimensional lifting - pen machining . meanwhile , we put forward an optimize approach of tool path , which improve the efficiency of engraving

研究了图像的刀具路径生成技术与轨迹规划问题,提出了基于射线的岛屿关系自动判断和区域加工单元的自动分割方法,有效、快速地判断了平面任意封闭轮廓线之间的关系,研究了平面任意区域填充加工、浮雕加工、三维提笔加工的刀具路径生成的技术,提出了刀具路径优化方法,提高了雕刻加工的质量和效率。

July 1 2004 OCA announced that Canton was the right to host the 16th Asian Games.

亚运会会徽于 2006 年 11 月 17 日在广州孙中山纪念堂隆重揭晓,以广州的象征"五羊雕像"为主体轮廓设计的图案成为 2010 年广州亚运会会徽。

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。