查询词典 vectors

Using the theories of probability, algebra and spectral theory comprehensively, we investigate some related characteristics of logic functions in cryptography: Firstly, we introduce m order generalized s - correlation immunity of Boolean vector functions and prove that the higher order generalized ε- correlation immunity can guarantee the lower order generalized ε- correlation immunity. Then by applying decomposition formula of joint distribution of Boolean random vectors, we give a spectrum criterion of m order generalized e - correlation immunity of Boolean vector functions. Furthermore, we show that the algebraic degree of m order generalized e - correlation immune Boolean vector functions is not restricted by the correlation immune orders.

本文主要运用概率论的思想和方法，并结合代数学和频谱理论的相关知识，对密码学中逻辑函数的有关性质进行了研究，主要包括以下三个方面的内容：首先，对布尔向量函数的相关免疫性进行了拓展，给出了k维布尔向量函数m阶广义ε-相关免疫的概念，证明了布尔向量函数的高阶广义ε-相关免疫性蕴含低阶广义ε-相关免疫性，并根据布尔随机向量联合分布分解式得到了布尔向量函数m阶广义ε-相关免疫的一个谱判别条件，还说明了m阶广义ε-相关免疫布尔向量函数的代数次数不受相关免疫阶数的制约。

Calcium phosphate nanoparticles has great biological characteristics and it is one of promising vectors of gene transfection and gene therapy.

磷酸钙纳米颗粒具有优良的生物学特性，是有应用前景的基因转染和基因治疗载体之一。

The computer simulation results show that the weight vectors obtained by the proposed algorithm allow the space-time adaptive processor outperform the Capon adaptive processor for the rejection of the clutter with nonstationary characteristics.

实验结果表明，用该算法获得的权值能有效地改善非平稳环境下杂波抑制性能。

In this thesis, we gives a novel graphical representation of DNA sequences by taking four special vectors in 2-D Cartesian coordinate system to represent the four nucleic acid bases in DNA sequences, so that a DNA sequence is denoted on a plane by a directed walk.

由于在DNA计算中，信息总是通过特定长度的DNA序列来表示的，因此，选择高质量的方式来表示DNA序列就成为一个重要的问题。

Understanding what attack vectors might be used on your systems is a fundamental piece of the security toolkit. vtc authors brad causey and bobby rogers present computer security from an angle that aims to put you into the seat, to protect your network through ethical hacking and penetration testing.

了解哪些攻击可能被用来攻击你的系统已经成为一项基本的安全常识。vtc 的作者 brad causey 和 bobby rogers 通过黑客和渗透测试来展示给你电脑安全方面的问题，以保护你的网络。

The dips deriving from transformer energizing can be distinguished via ST contour easily, and the dips caused by faults or motor inductions are classified using corrected first central moment and phase angle curve of amplitude envelope vectors from S-matrix.

利用S变换时频等值线图可以容易地识别由变压器激磁引起的电压凹陷；对于由各种故障和感应电机启动引起的凹陷，通过求取S矩阵幅值包络向量的修正一阶中心矩和相位变化曲线实现了分类。

Further, a group of typical character vectors are used and the courses of mining are analyzed in detail.

论文分别采用决策树，粗糙集及关联规则对一组典型特征向量进行挖掘，详细分析了挖掘过程，得到了理想的效果。

It might be a better way to view the multivariate analysis as one in a multi-dimensions vector space because characteristic roots and characteristic vectors are related in that way.

因为各方面的原因，包括时间上及数学基出方面的原因，现在不太可能从头到尾细致地学一遍空间解释几何及矩阵代数，以及关注太多的多元统计上的细节，我只求会用。

It indicates that chigger mite is one of HFRS vectors, which roles in HFRS transmission can not be neglected.

结论小盾纤恙螨为野鼠型HFRS主要传播媒介之一，在传播HFRS中的作用不容忽视。

In order to model complex hair styles, such as curly hairs and wavy hairs, we first construct five types of surfaces and three curves: curved cylinder, curved circular frustum, curved prism, curved edged frustum, curved revolving paraboloid, and curved cylinder helix, curved circular frustum helix and curved revolving paraboloid helix. Then we give the expressions for points and normal vectors on these surfaces, suitable to composition.

为了构造复杂发型，例如卷发发型和波浪发型，我们首先构造了五种曲面和三种曲线：弯曲圆柱面、弯曲圆台面、弯曲棱柱面、弯曲棱台面和弯曲旋转抛物面，以及弯曲圆柱螺线、弯曲圆台螺线和弯曲旋转抛物螺线，并且给出了这些曲线曲面上适合于拼接的点和向量的表示方式。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。