查询词典 bisection

In this paper, an extended divide and conquer algorithm is intended proposed, which is for solving the real symmetric band generalized eigenvalue problem under distributing environment Eigenvalue partition theorem is presented and proved Based on divide and conquer by extension, this algorithm computes generalized eigenpaires of symmetric band matrix pencil by bisection and generalized Rayleigh quotient iteration Theoretic analysis and numerical results show that this algorithm is better than the classic software package LAPACK when bandwidth is small and the scale is large Combined with multisection, which has good parallelism, it got good effects under distributed environments

提出了分布式环境下计算对称带状广义特征值问题的一种扩展分治算法，给出了特征值分割定理及其证明算法在扩展分治的基础上，利用二分压缩结合广义Rayleigh商迭代计算广义特征对理论分析和数值实验表明，对于窄带宽大规模的广义特征值问题，该分治算法明显优于LAPACK软件包结合并行性好的多分法，在分布式环境下获得了很好的并行效果1 引言本文研究了对称带状广义特征值问题Ax =λBx ( 1)的并行计算，其中，A ，B均为半带宽为r的n阶实对称带状矩阵且其中之一是正定的本文总假设B是正定的求解此问题有两种传统方法，第1种方法是通过计算矩阵B的Cholesky分解，将问题( 1)转化为标准特征值问题[1～3] ，进一步

We first present a 0.73-approximation algorithm, which can take the advantage of the special structure of the bipartite graph, for disjoint bisection 2Catalog Segmentation problem.

我们先讨论无交的平分二目录分割问题，利用图的特殊结构设计了巧妙的随机舍入方法得到0.73-近似算法。

The bisection method finds only one of them.

二分法只求得其中之一。

Bisection searching method is used to produce a set of optimal user bids to allocate resource capacity proportionally.

讨论了用户出价函数的特征，证明了该方案的存在性和唯一性。

Results There were no significant differences between patients with mild unilateral neglect and controls in their performance on any of these bisection tests.

结果轻度忽略组与对照组在上述线分试验中所有结果的差异均无统计学意义。

Based on this result, we give a 0.63-approximation algorithm for bisection 2-Catalog Segmentation problem.

然后利用这个结果给出平分二目录分割问题的0.63-近似算法。

A method is presented to calculate the exact bisection width for H-Torus too.

还提出了H-Torus结构等分带宽的精确求解方案，但是该算法的复杂度过大，只适用于网络规模较小的情况。

To obtain normal range of line bisection task of healthy Chinese elder volunteers, to understand whether the performance of line bisection by left or right hand is significantly different.

获得中国老年健康志愿者线等分试验的正常数值，并了解左、右手完成线等分试验的结果是否存在着差别。3。

The topological rearrangement operators often used in heuristics are Nearest Neighbor Interchange, Subtree Prune and Regraft and Tree Bisection and Reconnection, and TBR is the most exhaustive.

目前常见的分支交换操作有NNI ， SPR和TBR(Tree Bisection and Reconnection)，其中TBR的搜索空间最广。

The water chamber takes the shape of tilting cube, in favor of uniform distribution of cooling water on tube plate surface. The tube bundle is divided into two groups of zygomorphy according to the bisection system and it has eight support clapboards. The siphonopore center of each clapboard increases a certain distance corresponding to that of two tube plates and the cooling tube takes the shape of arch. The two-way cooling water of bisection flows through the condenser in opposite direction so as to improve the distribution of heat load for tube bundle. Around the throat of condenser, the final stage low-pressure heater, air extraction tube, intake device of bypass exhaust and the like are deployed.

它的特点是：水室呈倾斜立方体形状，有利于冷却水流在管板面上均匀分布；由于采用对分制，管束相应地分为左、右对称的两组，并且管束设有八块支撑隔板，每块隔板的管孔中心相对于两端管板的管孔中心依次抬高一定的距离，以使冷却管呈拱形状；对分制的两路冷却水以相反方向流过凝汽器，从而改善管束的热负荷分布；在凝汽器喉部布置了末级低压加热器，抽汽管道及旁路排汽接受装置等。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了