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Based on projective geometry,the research works about 3D invariances extraction and application have been done in this thesis as following:(1) The basic theories and concepts in projective geometry are systematically summarized. It includes:the camera models of perspective imaging,projective collineation,cross ratio,a simple compare about invariance among some geometry transformations,fundamental matrix,epipolar and epipolar line in epipolar geometry,and so on.

基于射影几何理论，论文围绕3D不变特征的提取和应用进行了如下的研究工作：(1)系统总结了射影几何中的若干基础概念，包括：透视成像的相机模型、射影对应、交比不变量、基于不同几何变换下的不变量的简单对比、对极几何中的基础矩阵、对极点、对极线等。

Punk is all about being yourself, liking what you like, doing what you do and not having to live upto someone elses expectations, only your own. there is no dress code, hair colour or rules to be punk, since punk is about being true to yourself.

朋克音乐就是做你自己，爱你所爱，不用做别人所期望你做的，做你自己穿有你自己标志的衣服，于众不同头发颜色都代表了朋克，朋克音乐就是演绎真实的你自己。

Special Report Column:According to the major topic of the current issue, we select relevant article about practical technologies , introduce the successful solutions about the the main topic.

专题报道：结合当期主题，精选相关的实用技术文章，集中展示该主题所涵盖技术范畴的成功方案。

What I love about the column is the way you feel about it.

我喜欢这个专栏的地方是你对它的感觉

My English is not so good, but I understand everything you wrotte about Easter an about your experience and I love the Jesus Love for you and the message that He command you to us.

我的英语不是那么好，但我知道，一切你wrotte约复活节担心你们的经验和我爱耶稣爱你和信息，那就是他的指挥，你给我们。

It also analyzed all the types of evaluation index about storage materials management, put forward commensurability methods for different type of index and presented commensurability computing example of evaluation index about storage materials management.

针对问题2，分析了仓储物资管理评估指标的不同类型，提出了不同类型指标的可公度性方法，并给出了仓储物资管理评估指标的可公度性计算实例。

The results of interior ballistic theoretical simulationindicates that the single PSS charge application need propellants be provided with upperburning rate, adopting PSS and traditional model frame propellants commix charge is apractical applied technique approach.. By optimizing the PSS model frame parameter, wecan obtain "flat roof" domino offect with better even peak value "double peak" p-tcurve. Comparing with current 19 hole propellants charge with the best increasing burningsurface characteristic, the muzzle velocity of projectile can be enhanced about 55m/s, andthe instruct pressure efficiency can be enhanced about 5.7％.

内弹道理论模拟结果表明，PSS发射药单一装药的应用，需要发射药具有较高的燃烧速度，采用PSS发射药与传统药型的混合装药，是目前PSS发射药实际应用的技术途径，通过药型参数的优化可获得"平台"效应更好的等峰值的"双峰型"P～t曲线，与现有增面性最好的19孔发射药装药相比，弹丸初速可提高55m／s左右，示压效率高5.7％左右。

In comparison with the switches based on other polytypes of SiC, the design benefits from having fewer lattice mismatches between the SiCGe and 3C-SiC. A maximum common emitter current gain of about 890 and superb light-activation characteristics may be achievable. The performance simulation demonstrates that the device has a good I-V characteristic with a turn-on voltage knee of about 4V.

结果表明，与采用其他结晶类型的碳化硅衬底相比，SiCGe与3C-SiC间较小的晶格失配有利于提高器件性能，可使其最大共射极电流增益达到890，获得最好的光触发特性和较好的I-V特性，饱和压降大约为4V。

The issue here is really more about the CEO's views on information technology than what he thinks about you,' says Matthew Podowitz, an operations and IT transformation consultant with Atlanta-based Compass Rose Partners LLC.

总部位于亚特兰大的Compass Rose Partners LLC运营及IT转型顾问珀多威兹说，在这件事上，问题更多的是这位首席执行长对IT的看法，而不是对你个人的看法。

Firstly, some basic concepts about ECC are introduced;then the scalar multiplication under affine coordinate is discussed, we make a research and analysis of the side channel attack of scalar multiplication used in portable device, give out a new scalar multiplication algorithm which has the advantage of efficiency over other protected algorithm; and an improvement of the standard scalar multiplication algorithm proposed by IEEE1363 is made with the efficiency increasing by about 10%; at last, we deal with the using of complex multiplication in scalar multiplication algorithm, we generalize the methods and deduce a complete computing procedure, with proposing a new method which used several different fast endomorphism ,we give out an approach to boost the scalar multiplication with fast endomorphism.

本文首先介绍了椭圆曲线密码的有关基本概念；其次介绍了椭圆曲线上点的标量乘法在仿射坐标下的计算，对一般便携设备上的椭圆曲线点的标量乘法的边信道攻击做了研究与分析，给出了一种在效率上优于其它可抵抗边信道攻击的标量乘法的新算法，并对IEEE P1363 标准给出的标量乘法做了改进，使得标量乘法的运算效率提高了近10%；最后介绍了利用复乘计算标量乘法的方法，对已有的方法进行总结归纳，得出完整的计算过程，并针对两类超奇异椭圆曲线给出了一种利用多个可快速计算的复乘的标量乘法，得出一类普遍的结果，并给出了进一步用复乘加快标量乘法的思路。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。