查询词典 biconjugate

Meanwhile the biconjugate gradient method instead of the conjugate gradient method is used to accelerate the iteration process.

同时用双共轭梯度法代替共轭梯度法来加速迭代过程。

The approximations can be used as the initial guess and pre-conditioner in the stabilized biconjugate-gradient fast Fourier transform algorithm for computing integral equations, and hence a hybrid DTA-BCGS algorithm with higher efficiency is formed.

这两种近似可以作为计算积分方程稳定型双共轭梯度快速Fourier变换算法的初始猜测值和预条件因子，从而形成效率更高的混合DTA-BCGS算法。

This program employs TVD scheme with different limiter (MinMod, SMART, etc.) for the evaluation of numerical advective flux, ICCG and Biconjugate Gradients-CG algorithm for solving discretized system.

程序中采用TVD格式，可选择不同限制格式如MinMod限制器，SMART限制器等，离散系统用ICCG和Biconjugate Gradients-CG共轭方法求解。

The stabilized biconjugate gradient and fast Fourier transform method is deployed to analyze the transient EM characterization of the objects embedded in a half-space and a three-layer background.

应用稳定的双共轭梯度－快速傅立叶变换方法，分析了两媒质半空间和三分层媒质中浅层埋入体的脉冲电磁散射。

The method is based on the fact that the poststack zero-offset seismic section in a local time window is consisted of some linear events. Using the sparseness discrete τ-p transform and prediction biconjugate gradient algorithm to extrapolate makes the empty traces in the space coordinate reconstruction.

该方法根据叠后零偏移距剖面，在局部时窗内可以看作是一系列线性同相轴的组合，使用稀疏离散τ-p和预条件双共轭梯度算法进行地震道外推，使空间方向的缺失道得到恢复。

Giving the more explicit boundary conditions and using Biconjugate gradients stabilized method to solve the linear algebra equation with large coefficient matrix, we get a fast algorithm of highprecision to calculate effectively electrical and magnetic fields in the whole space.

由于提出了简洁的边界条件，采用了解大型系数矩阵方程组的双共轭梯度稳定解法，所实现的三维交错采样有限差分数值模拟算法具有迭代收敛稳定、计算精度高、速度快等特点。

BiConjugate Gradients Stabilized method is applied for solving large linear equation set. That the calculation results of PC modeling program match well with that of parallel algorithm shows high reliability of the latter. The parallel algorithm has established the basis for the inversion 3D Borehole-Surface electromagnetic data and also provided the tech support for the utilization of the program.

在求解大型线性方程组时，采用的是稳定的双共轭梯度算法，单机正演程序与并行正演程序的计算结果有着很好的一致性，这说明了并行算法的正确性，为进一步开发井地电法三维反演并行程序奠定了基础，也为井地电法三维正、反演程序实用化提供了技术支持。

Design Krylov subspace conjugate residual squared algorithm for nonsym-metric linear systems and the improved conjugate residual squared algorithm for distributed parallel computing based on biconjugate residual method algorithm, and give theoretical analysis and comparisons of algorithms for two algorithms.

基于BiCR算法设计了求解非对称线性方程组Krylov子空间平方共轭残差算法和适合分布式并行计算的改进的平方共轭残差算法，并对两种算法进行了理论分析和算法比较，串行和并行数值试验表明所提方法具有较好的收敛速度和并行性能。

The obtained results a re compared with analytic solution and those from integral equation and other me ans. It is shown that the staggered grid finite difference method combined with the Biconjugate gradient iterative solver processed with divergence correction and incomplete Cholesky decomposition procedures can efficiently improve the three dimensional electromagnetic calculation with high accuracy and stability.

经与解析方法、积分方程等其他方法的计算结果对比表明，交错网格有限差分法结合散度校正和不完全乔累斯基分解预处理的双共轭梯度迭代方法进行正演计算，速度快、精度高、结果稳定，能适应三维复杂介质的数值模拟，为三维电磁反演奠定了基础。

The alterative direct iterative, strong implicit procedure, preconditioning transpose-free variant of quasi-minimum residual method and biconjugate gradient stabilized method of the Krylov subspace methods were implemented in SIMPLER algorithm to solve the algebraic equations.

将交替方向隐式、强隐及Krylov子空间法中的TFQMR、Bi-CGSTAB方法实施于SIMPLER算法，作为其内迭代求解方法，比较了不同代数方程求解方法的收敛速度，并首次分析了它们对算法健壮性的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。