查询词典 splittings

Some special matrices and numerical characteristics related to iteration solutions of linear systems, convergence and comparison theorems of matrix splittings, preconditioning techniques for iteration solutions of saddle point problems are deeply studied in this thesis.

本文对与大型线性代数方程组迭代求解有关的特殊矩阵和数值特征进行了深入的研究，特别系统地研究了矩阵分裂迭代法的收敛性和比较理论及鞍点问题迭代求解预处理技术。

We find the electromagnetic effects play the dominant role for both the pion and rho meson mass splittings.

我们发现无论是对于π介子还是ρ介子的质量分裂，电磁效应都占主导地位。

According to the H NMRstudy, it was found that the protons on the cyclopentadienyl ring of 〓 were not splitted, but when one proton on the cyclopentadienylring was substituted by methyl, that is in〓 complexes, thefour protons on the ring were splitted into four groups,the 〓 between the onesignal and the others is large, the total splitting is over 2ppm. The splittings werealso affected by the halides linked with the titanium, they increase according to theorder of CI, Br, I. By the study of the 〓 Sn NMR, it is found that the chemicalshifts of 〓 are present in low field. It is assume that the large space strain causesthe angles of the tin linked with ligands deviate from the normal tetrahedral anglesresults low field shift for 〓Sn. And by MS study,there were no molecular ions for 〓 complexes in the spectra. However, for 〓 when X=CI,Br,NCO and Ar is tolyl or phenyl group,there were molecular ions,but theirabundances were very small,and no that for the iodide was found.

钛上的卤素对茂环氢的裂分也有影响，依〓，Br，I顺序，卤素对茂环氢的裂分依次加大；通过对〓的研究发现，以上这些化合物〓的化学位移都出现在低场，认为大的空间张力造成的锡的键角偏离正常的锡的四面体键角是造成〓化学位移出现在低场的原因；对这些化合物质谱的研究发现，〓系列化合物得不到分子离子峰，而〓系列的化合物，当X=〓，NCO和苯环上不带取代基或只带甲基时，则出现分子离子峰，但丰度很低，而相应的碘化物和其它化合物则没出现分子离子峰。

Secondly,under the condition of not considering the concrete values of parameters, the Gell-Mann-Okubo baryon mass relations for decuplet and octet are studied ,which are related tothe mass splittings within decuplet or octet. The higher order perturbational corrections ofSU(3) rotating excited states to GMO relations are presented up to the third order in thestandard SU(3) skyrmion quantum mechanics.

其次，在与参量具体取值无关的情况下，利用标准的SU(3)Skyrme模型，研究了孤立子转动激发态对反映重子十重态和八重态内部质量劈裂的Gell-Mann-Okubo关系式的高阶微扰修正。

Part three is devoted to investigating convergence and comparison theorems of splittings of matrices.

第三部分研究了矩阵分裂的收敛性和比较理论。

Advanced imaginary time techniques, e.g. for decay rates and tunnel splittings, are discussed in the first part.

高级想象中的时间技术，例如为裂开的衰减率和隧道，被在第一个部分讨论。

It is found that the peak splittings in the far-infrared spectra caused by the interaction can be clearly shown in nanorings with proper size and shape.

电子-电子相互作用引起的远红外谱的峰的劈裂可以在合适尺寸的纳米环中清晰的表现出来。

For solving the singular linear equations,we present the iterative methods based on proper splittings and give the convergence analysis.

在奇异线性方程组的求解方法中，我们提出了基于正则分裂的二级迭代法并给出收敛分析；在论文的第三章我们对奇异的结构化矩阵的置换秩进行了研究，得到了一些结论并给出了应用。

Mica blocks, thins , films and splittings - Measurement of thickness ISO

云母块，薄片，薄膜和劈裂叠层。厚度的测定

Furthermore, we give a sufficient condition whenthe surface sum of Heegaard splittings is stabilized. Thin position of Heegaard splittings defined by M.

同时，本文还给出了由曲面连通和得到的Heegaard分解是可稳定化的一个充分条件。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。