查询词典 permuted cyclic code

modern compute processors and systems have put many technologies into practice, while compliers make high-performance possible when these technologies are used.the tree-ssa optimization infrastructure in gcc supplies a powerful program analysis framework.the enhanced data dependence analysisinformation allows compliers to change the algorithm for widen locality .whereby the utilization ratio of the resources can be improved which leads to increasing throughput and higher performance.the study focuses on data dependence, matrix transform and cyclic transformation by analyzing their features,algorithm and performance and stating the status quo of gcc cyclic transformation whereby outlook of the study has been made.

现代的计算机处理器和计算机系统实现了很多先进技术，要利用这些技术更需要编译器的支持以取得高性能。 gcc中tree-ssa优化框架提供了一个功能强大的程序分析框架。增强的数据依赖分析信息允许编译器变换一个算法以取得更大的局部性，提高资源的利用率以增大吞吐量，提高性能。该文对数据依赖、矩阵变换、循环变换进行了研究，分析了它们的特点，算法和性能，陈述了gcc中循环变换的现状，对以后的研究做出了一定的展望。

/(x~m — 1). In the case of m being odd ,all quasi-cyclic codes are shown to be decomposable into the direct sum of a fixed number of cyclic irreducible A-submodules.

在m为奇数的时候，所有的拟循环码均可以分解为一些有限数目的循环不可约A-子模的直和。

On this basis, this paper gives out a deduction that the difference between one-way and two-way is by the reason of the intercross effect of cyclic spheric stress and cyclic deviator stress.

在此基础上得出推论：单、双向振动的差异应该源于循环球应力与循环偏应力的交叉影响。

The calculated results show that the most stable structures of C 5H 10NH(NH 3) n are one linear hydrogen-bonding, three-cyclic and four-cyclic structures for n=1, 2, 3, respectively. At MP2/6-31G//B3LYP/6-31G level, the MO population analysis of the most stable configurations C 5H 10NH(NH 3) n(n=1—3) has been employe...

在 MP2 /6 - 31G //B3LYP/6 - 31G水平下，对最稳定构型 C5 H10 NH( NH3) n ( n=1～ 3)的分子轨道进行布居分析，并且对相应的占据轨道进行指认。C5 H10 NH( NH3) n( n=1～ 3)垂直电离势的计算结果表明，形成氢键团簇后，分子的垂直电离势降低。

Using real-valued decomposition technique, Unitary Cyclic root-MUSIC algorithm without spectral search was proposed for multipath environment of mobile communication, by reconstructing the data model of the cyclic covariance matrix with Hermitian property, which has a better performance in the presence of multipath propagation and substantially reduces the computational complexity.

通过构造了循环自相关矩阵的数据模型，使其具有厄尔米特特性，提出了一种基于实值分解技术的循环root-MUSIC算法，无需空间谱搜索，较好地解决了多径传播环境中信号高度相关问题，极大地降低了计算量。

The results indicate that its dynamic stress-strain curve is hyperbolic type. The dynamic strain of LCES decreases with increasing confining pressure, cement content, curing ages and cyclic loading frequency when it is subjected to the same dynamic stress. At the same dynamic strain, the dynamic secant elastic modulus E_(sec of LCES increases and the damping ratio decreases with increasing confining pressure, cement content, curing ages and cyclic loading frequency. The curves ofσ_d～ε_d,E_～ε_d and D～ε_d with different EPS content intersect respectively, the trend of LCES deformation characteristic is inversely proportional to EPS content near the intersection. The value of dynamic strain at the intersection is about 0.5%~3.0%, the magnitude of which is related to the mixing proportions and confining pressure.

试验结果表明，LCES的动应力应变骨干曲线形态符合双曲线；在相同的动应力作用下，LCES产生的动应变随着固结压力、水泥掺量、试样养护龄期和振动频率的增大而减小；在动应变相同的情况下，随着固结压力、水泥掺量、试样养护龄期和振动频率的增大，LCES的动模量增大而阻尼比减小；随着加载次数的增大，LCES的动模量在开始阶段显著降低，然后趋于稳定，但当加载次数达到几百次时，动模量又有增大的趋势；不同EPS掺入比的LCES的动应力应变骨干曲线、动模量随应变变化曲线和阻尼比随应变变化曲线都发生了相交，交点前后EPS掺入比的大小对LCES动力变形特性的影响趋势是截然相反的，交点处的动应变值一般在0.5％～3.0％范围内变化，其大小与LCES的配比以及固结压力有关。

A class of cyclic codes and their duals are also discussed, and the idempotent generators of this class of cyclic codes and their duals are described.

讨论了R上一类循环码及其对偶码，并给出了这类循环码及其对偶码的幂等生成元。

Secondly, the concept of column space, cyclic invariant subspace and generalized cyclic invariant subspace were introduced.And some basic properties, such as separation lemma, were presented.

其次，引入列空间、循环不变子空间和广义循环不变子空间等基本几何概念，给出一些有关概念的基本性质，特别是分离引理。

If any part of the cyclic process is irreversible,the inequality applied and the cyclic integral is negative.

a若回圈的任一部份包括不可逆自发的步骤，则回圈的积分为负，且不等式即成立。

When the signal sources have different cycle frequencies, a method to estimate the optimal time lag is presented. It solves the severe problem that the conventional Cyclic MUSIC requires knowing the optimal time lag in computing the cyclic correlation matrix. A method of two-step search for DOA estimation by employing an interleaving technique and a Joint Estimation Strategy is developed to overcome the inadequency of signal sources with the same cycle frequency having no optimal time lag.

当信源的循环频率各不相同时，提出了一种估计最佳延时的方法，解决了传统Cyclic MUSIC算法计算循环相关矩阵需要已知最佳延时的问题；为克服多个具有相同循环频率信源不存在最佳延时的不足，利用交错技术和联合估计策略，提出了两步搜索估计DOA的方法。

Panorama Many people are dancing in a large sitting room.

在一个大客厅里，许多人在跳舞。

We fully understand how a microwave oven cooks food, it is first necessary to talk ...

我们充分理解一个微波炉煮的食物，这是首先要谈。。。