特征值

Furthermore, while signature scanning is widely understood, most users do not have a solid understanding of nonsignature technologies.

此外，虽然特征值扫描已众所周知，但是大多数用户对非特征值技术仍没有一个一致的理解。

Although the title of this article implies that the entire spectrum of malware detection technologies is covered, it primarily focuses on nonsignature technologies; this is because signatures are primitive and repetitive and there is little to discuss.

虽然从标题看这篇文章意味着涵盖了整个恶意软件检测技术行业，但它主要侧重于非特征值技术，这是因为特征值是最原始的和重复使用最多的技术，所以没必要讨论。

Order determination is accomplished in two stages, i.e., the AR order is first determined by the minimum eigenvalue of overdetermined instrumental variable product moment and the MA order is then estimated by the minimum eigenvalues of a covariance matrix derived from the observed data.

该方法将ARMA模型的结构辨识分两步进行：首先利用超定辅助变量乘积矩(0IVPM)的最小特征值确定自回归部分的阶，然后利用协方差矩阵的特征值估计滑动平均部分的阶。

By using such explorations testing ways as drilling, ultrasonic logging, pumping test, water analysis, microseismic survey and indoor earth mechanical experiments, the foundation bearing layer's features in soft rock iterbedded hard rock constituted by argillaceous dolomite rock, argillaceous limestone, pelitic mudstone and shave rock was determined. The foundation bearing layer's features and the slope design parameters of C and Φ in foundation pit was evaluated and excavated through local architectural experience.

采用钻探、超声波测井、抽水试验、水质分析、地微震测量、室内岩土力学室验等综合勘探测试方法，确定薄至中厚层状泥质白云岩、泥质灰岩夹泥岩、页岩组成的软质岩与硬质岩互层状岩体地基承载力特征值，结合地区的建筑经验合理的评价和充分挖掘软质岩与硬质岩互层状岩体地基承载力特征值和基坑边坡设计参数C、Φ。

For , it can be shown that , and In chapter 2, using some well-known results, several inequalities on eigenvalues of the generalized Schur complement of BAB* where A is positive semidefinite are obtained:(1) If ,,, and l is an positive integer satisfying

第二章对形如BAB~*的矩阵乘积，介绍了几个关于其Schur补的特征值不等式，并在已有结果的基础上，利用定理1.1.1，得到了其广义Schur补特征值的诸多不等式。

This article makes a study of the effects of six different solvents on lacquer wax extraction of the Japanese Rhus succedanea,concerning the rate of extraction,the albedo value,melting point and chemical characteristics.

研究6种不同溶剂对日本野漆蜡的萃取率、白度值、熔点和化学特征值的影响。结果表明，溶剂种类对日本野漆蜡萃取率和白度值具显著性影响，但对熔点和化学特征值影响较小。试验得出石油醚(30~60℃)是漆蜡萃取的最佳溶剂，浸提温度低，时间短，漆蜡萃取率高，产品白度值高、色泽好，操作过程安全

The results show that wet air reduces both fatigue life and strength with the influence-factor of 0.6059 and 0.8722, respectively. Wet air environment enlarges the dispersivity of fatigue life, therefore using the corrosion-influence-factor obtained by eigenvalue or mean value to predict the fatigue life with high reliability will cause an unconservative conclusion.

结果表明，潮湿空气环境显著降低了2024-T3铝合金的疲劳性能，潮湿空气环境对其疲劳寿命特征值和疲劳强度均值的影响系数分别为0.6059和0.8722；在潮湿空气环境中疲劳寿命的分散性变大，用疲劳寿命的中值或特征值得到的腐蚀影响系数进行可靠度95%的腐蚀环境下的寿命修正，将得到偏危险的结果。

In degraded PSM matching classification, errors modification method of degraded PSM is presented and the matching tensor of every canonical scattering centers is given. In Chapter 4, the theory of wideband millimeter-wave radar target identification is introduced. It is indicated that, for HR radar target identification, description of temoral relations among features and pattern recogntion adaptive to variation of target angles are of key importance. A rule-based pattern recogniton method of sequential reasoning is proposed, which uses a series of rules to describe relations of features variation caused by target angles variation and has the advantages of adaption to unrandom variation and false probability control in classification over traditional statistical pattern recognitiop method. Feature extraction is crucial step in target identification. In range profiles identification application, features are extracted by means of range domain pre-processing algorithm, spacial and amplitude visual computation directly from range profiles and transform algorithm based on range profiles. Visual or transformed features are either sufficiently convinced or necessarily convinced and both of them are effective and robust to range profiles identification.

在第四章，首先对宽带毫米波体制背景下目标识别方法的一些特点进行了阐述并指出，在毫米波雷达目标识别中，特征之间动态关系的描述以及能适应目标姿态角变化的模式识别方法的研究乃是要解决的关键问题；进而提出了一种基于规则库的序贯推理模式识别新方法，在这种方法的研究中，主要包括序贯推理规则库的规则排列与特征选用顺序以及规则库的收敛等问题；这种方法克服了传统的统计模式识别方法特征利用效率不高、难以适应特征值的非随机性变化的缺点，把姿态角变化所引起的特征的变化用一系列规则加以表示，其优点是能适应特征值的非随机性动态变化，并能控制分类过程中的差错概率α；特征抽取是目标识别中的关键步骤，在基于目标距离像的特征抽取方法研究中，提出了距离空间域的预处理算法、距离空间域与幅度域的直观特征抽取方法以及基于目标距离像变换分析的特征抽取方法。

Moreover, Arnoldi method was also applied to the generalized unsymmetric eigenvalue problem, which arised from the applying of BEM to the free vibration problem of elasticity.

此外，将Arnoldi法应用于由边界元法得到的非对称广义特征值问题，给出了这类特征值问题有效的减缩式求解方法。

The signals were dissembled to a sieres of compactly supported wavelet bases non-redundantly and without leaking.

文中采用小波分层突变系数作为判别故障隐患的特征值，并对该特征值进行趋势分析。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。