查询词典 vector basis

And designs a new algorithm which can judge whether or not a given nonnegative integral vector corresponds to a friable trasition sequence. Then the algorithm is used to analyze the reachability of net system which has unique reachable vector or has no T-invariants.

4对可达性与可达方程可满足性相互等价的证明进行补充，给出一个判定非负整数向量是否为可执行向量的判定算法，最后利用该算法对唯一可达向量网和不含T-不变量的Petri网的可达性进行判定。

Firstly, by using the vector integral theory and boundary conditions of the electromagnetic filed, the boundary problem of two electromagnetic fields in the upper half space and lower half space is transformed into two vector integral equations just related to the topography interface, i.e.

提出了一种用边界元法计算频率域人工源三维地形电磁场的数值模拟方法。

The current signals were gathered in the tests, and processed by wavelet package transform. A characteristic vector was constructed by the energy of different frequency segment, which was calculated by using the coefficient of wavelet package transform of the current signals. The vector shows that the energy of low frequency segment is of the majority of the total energy, and becomes larger as the interelectrode gap decreasing.

在线采集真实电解加工过程中的电流信号，用对实测信号进行小波包分解和重构后的小波系数计算各频段的能量，构造一个由不同频段能量组成的特征向量，发现特征向量的低频分量占总能量的大部分，随着平衡间隙的减小，低频分量能量增大。

According to the each average value of Change Vector in six years, changes, intra-annual, inter-annual and interlocal, of winter wheat have been quantified. The result shows that the method of Change Vector Analysis is effective for monitoring the winter wheat growth as a new idea, which can integrate most of the feature factors of NDVI curve.

研究表明，变化向量分析方法能有效地从空间域和时间域反映东部五省冬小麦长势变化规律，以单一综合性指标综合了NDVI时间序列曲线的大多数特征参数，为农作物长势遥感监测提供了一种新的研究思路。

A vector named as relation vector to describe relations existing between intervals presented is used by Allen in his Interval algebra theory.

文中为Allen的区间代数理论中区间的关系表达提出了向量表示法，称之为关系向量。

Then,the dimension of the vector is linearly reduced by ONPP,thus effectively preserving the intrinsic neighborhood geometry of the vector and the global geome...

实验结果表明，基于DT-CWT的ONPP算法可以在特征维数有效降低的前提下很好地完成人脸识别任务。

The constitutive equation between current density vector and electric field strength vector is tranformed into s-domain by the principle of Laplace transform,and the inverse Laplace transform is adopted for the explicit equations between them in time-domain. Finally through exponential time stepping,the FDTD iteration equations are obtained,which can be easily solved in discrete-time-domain.

该方法是将电流密度矢量与电场强度矢量之间的本构方程基于拉普拉斯变换原理转到复频域，然后再逆变换到时域得到它们之间显式的方程，最后再结合指数差分，得到离散时域的显式的FDTD迭代方程，解决了本构方程中电流密度矢量的分量相互耦合而不易直接离散的困难。

Compared with the Ritz vector method,the scheme still keeps the feature of using sidgle vector for inverse iteration.

一般的Ri权向址法和助n二哪法都是从一个初始向量开始迭代，用带，卜交化的反迭代脚戈一组Ritz挂向叭和相应r内只对角矩阵，仅用一次R叮leigh一Ri垅分析法，求得若千最低阶特征解。

The paper showed a parameter representation of isotropic vector in complex vector space, and obtained the some properties.

给出了复向量空间中的迷向向量的一种参数表示，并由此获得了迷向向量的一些性质。

In this thesis, we mainly study the theory of vector optimization in three aspects: the spectral scalarization of Euclidean Jordan algebra vector optimization, the robust methods for solving uncertain multiobjective linear optimization problem and the application in game theory.

本文共分四章，主要致力于向量优化三个方面的研究：欧几里德若当代数向量优化的谱标量化、不确定多目标线性优化问题的鲁棒方法和向量优化在对策论中的应用。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。