查询词典 group method

Seeking the solutions of NLEEs is now a very important subject in Nonlinear Science.The Lie group method is a Powerful tool to study the nonlinear differentical equations.

为了探索这些方程在应用中的价值，求解出各种非线性演化方程或方程组的精确解，是非线性科学中一个很重要的课题。

We describe recent developments in the construction of numerical schemes for general (one-dimensional) Hamiltonians: in particular, schemes based on exact diagonalization techniques and on the density matrix renormalization group method.

我们将介绍最新发展的几种处理一维强关联系统的实时演化方法，主要是精确对角化方法和密度矩阵重整化群方法。

Cluster analysis by unweighted pair-group method with arithmetic mean showed that both SSR and morphological markers could well distinguish the tomato cultivars by the colour of mesocarp and fruit size. The results of the evaluations of genetic diversity in tomato cultivars based on the two methods were similar.

用UPGMA进行聚类分析，SSR标记和形态标记都可依果肉颜色和果实大小将供试材料分组，即黄色和红色果肉，樱桃小番茄和大、中果形的混合型；两种方法对番茄栽培品种遗传多样性的评价相近。

We obtain comparableresults with the numerical renormalization group method.

把我们的结果和Lacroix的解以及数值重正化解的结果作了比较。

The basic clue and the main steps of renormalization group method used for the description of critical phenomena is introduced.

介绍了用重整化群方法描述临界现象的基本思路和做法。

In this Dissertation, we will study the ground state phase diagram of a one-dimensional deformed t-J model by the bosonization and renormalization group method.

文中，我们用玻色化方法和重整化群技术讨论了形变t－J模型的基态相图。

Renormalization group method which calculates fractal dimension theoretically is the most useful tool when we study critical phenomena of phase transition.

重整化群方法是研究相变的临界现象最有力的工具，它是一种由理论求得分形维数的方法。

By density-matrix renormalization group method, the 1/5-doping effect on the spin-1/2 Heisenberg antiferromagnetic chain is investigated.

利用密度矩阵重整化群方法研究1/5掺杂对自旋1/2海森堡反铁磁链的影响。

We investigated Gaussian model on some fractal lattices firstly with anexactly Real-Space Renormalization Group method.

由于分形结构不具备欧几里得空间晶格所具有的空间平移不变性，通常采用的基于傅立叶变换的动量空间重正化群方法已经不再适用。

Lie group method ; Lie theory ; Matrix exponentiaE Symmetric space ; Lie triple system

非线性度李群方法；李理论；矩阵指数；对称空间；李三系

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。