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Model based vehicle tracking method will cause tracking drift, and can not deal with occlusion; Kalman filter based vehicle tracking method generally assumes that the motion of vehicle is uniformly linear motion or uniformly accelerated linear motion. This assumption is not appropriate for the actual movement of ...

从实验结果看，基于模型和灰度对称融合的运动车辆跟踪方法能稳定的跟踪到前方远距离车辆，能适应光照剧烈改变情况下的车辆跟踪，能处理遮挡问题，是一种有效的车辆跟踪方法。

The microstructure fiber based laser devices have outstanding performance comparing with the normal fiber based laser devices because of the flexible and various airhole microstructure.

由于微结构光纤灵活多变的结构特点，使得以其为增益介质的光纤激光器件，具有比普通光纤激光器件更加优异的性能。

In the area of face detection, there is knowledge based method, feature based method and model matched method, in which we mainly introduce the Adoboost algorism and ASM algorism.

首先对人脸检测和跟踪技术进行综述，在此基础上，介绍了多种人脸检测和跟踪的方法，比较了它们的优缺点。

Purple teeth are red-based Ukrainian almandine; red-based, there are rose-colored, concentrated red, black and red of the pyrope; a green, yellow, yellow, and green, green in grossular; a green uvarovite so.

牙齿红紫色的乌克兰铁铝榴石，红色的，有玫瑰色，集中红色，黑色和红色的镁铝榴石，绿色，黄色，黄，绿，青（乌拉尔祖母绿的钙铝榴石）； 1绿色钙铬榴石等。

These include pumice and tufa. 2. Lava-based soil are the product of lava flows from the volcano. 90 percent of lava-based soil is composed of basalt with the other ten percent including andesite, pitchstone, rhyolite, and trachyte.

这种土壤含有浮石和石灰华。2）熔岩为基础的土地，由火山爆发后产生的熔流产生。90%是由玄武石组成的熔岩，另外10%是中长石、松脂岩和粗面岩。

The results show that: the fillers of SiO_2 based investment consist of SiO_2,Al_2O_3 and MgO,and the binder is NH_4H_2PO_4;for SiO_2 based investment,the bulk density and the compression strength decrease,the apparent porosity and the thermal expansion increase,when the specimens are heated to 900 ℃;the fil.

结果表明：氧化硅系包埋料的骨料是氧化硅、氧化铝、氧化镁，结合剂为磷酸二氢铵，其900℃煅烧后显气孔率增加，体积密度下降，耐压强度降低，热膨胀增大；氧化铝系包埋料的骨料是氧化铝和氧化镁，结合剂为磷酸二氢铵，其900℃烧后显气孔率增加，体积密度下降，热膨胀变化不大；氧化镁系包埋料的骨料是氧化镁和氧化铝，结合剂是铝酸钙水泥，其900℃烧后耐压强度明显降低，热膨胀明显增大。

In this paper, it is realized by data-based modeling and graphics-based modeling. The corresponding arithmetics are applied in the process.

本课题中主要通过基于数据的建模和基于图像的建模实现，并在建模过程中体会到图形生成算法在可视化中的应用。

The original Archimedes A305 only had 512 Kb of RAM and monochrome graphics, but its 4 MIPS ARM2 processor offered much better performance than a 68020 based Macintosh II or an 80386 based PC.

原始的阿基米德斯 A305仅有512KB内存，是用单色显示器，但是达到4MIPS的ARM2处理器却提供了比起68020的MACII或80386PC好得多的性能。

Mobile agent has been an important means of managing distributed systems. With mobile agent, the traffic between PDP and network device is dramatically reduced. It analyzes the advantages and disadvantages of mobile agent based network management and policy-based network management, proposed architecture of network management with flexibility, intelligence and autoimmunization, and discussed the performance, to evaluate the feasibility of the architecture.

移动代理已经在分布式管理中得到应用，采用移动代理可大大减少策略决策点和网络设备之间的通信流量，通过对基于移动代理的网络管理和基于策略的网络管理的分析研究，结合两种技术的优点，提出了一种具有良好的适应性的自动化网络管理体系结构，并进行性能分析。

The three biggest firms in the business—SES, based in The Hague, Intelsat, based in Washington, DC, and Eutelsat, based in Paris—brought in combined revenues of over $6 billion.

经营这项业务的三大巨头——总部位于海牙的SES，总部位于华盛顿的国际通信卫星公司和总部位于巴黎的欧洲通信卫星公司——总共带来了60多亿美元的收入。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。