查询词典 group method

But according this method, if variables are very many, it will be difficult to solve the equation using the current method. In this paper, it provides a simple method by discussing the structure of solution based on the theory of free abelian group.

本文利用矩阵和自由阿贝尔群的理论，对一次不定方程的解的结构进行了讨论，并利用其结论给出了一种简单解法。

Based on characteristics and connectivity of the groups in molecules,the group contribution method and topological method was combined together,a new method was developed which can be used to calculate the density of alkyne from molecular structure.

根据分子中基团的特性和连接性，将基团贡献法和拓扑方法结合在一起，发展了一种计算炔烃密度的新方法———基团键贡献法，该方法具有基团贡献法适用范围广和拓扑方法计算结果准确可靠的特点。

Finite Element Method is an important means of engineering subject and has been proved to be a common method in many subjects. However, disadvantages still remained. During the structural analysis, large amount of high-order units were used in order to ensure the precision of arithmetic solution when using Finite Element Method to do discrete processing. This will cause high order of coefficient matrix of corresponding equation group.

有限元方法是工程学科的重要工具，被证明为在许多科学和工程领域中连续物理系统模拟的一种普遍方法，但缺点是随着工程结构分析问题越来越复杂，在结构分析中，为保证数值解的精度，在使用有限元方法离散处理时，往往要用大量的高阶单元将结构剖分得很密，这时相应的代数方程组的系数矩阵的阶数很高，即使用目前速度最快的串行机来进行求解，费时仍然太多且问题的规模受到内存容量的限制。

Based on the adequate study of general method to solve linear equation group, this thesis employs incomplete Cholesky conjugate gradient method for the numerical stability and efficiency of solution process. In order to eliminate morbidity of FEM coefficient matrix and speed up its convergency, this thesis proposes a newly effective incomplete Cholesky decomposition preconditioned method and suggests some improved preconditioned schemes to the current popular ICCG methods.

为了克服系数矩阵病态特性和加快收敛速度，本文从完全的Cholesky分解出发，构造出了一种新的不完全分解预处理方法，效果显著；另外，在已有的不完全Cholesky分解预处理方法的基础上，提出了十分有效的改进方案。

For this method, a group of arbitrarily distributed points is used to represent the problem domain, and the background cells are not required. It is a truly meshless method.After that, the implementation of the compactly supported radial point interpolation method is analyzed in detail especially. The flowchart of the theory and the program is presented.

紧接着，本文对紧支径向基函数点插值方法的具体实现过程进行了详细分析，建立了其理论与程序实现的流程图，并用Visual Fortran编制了二维平面弹性静力问题分析的紧支径向基函数点插值方法计算程序。

This paper present a new sorting method on group decision -likelihood ratio method, it s a simple, reasonable and direct method.

本文给出了群组决策法中新的排序方法，这一方法简单、合理、直观。

Based on characteristics and connectivity of the groups in molecules, a method that combined the group contribution method and topological method together was developed, and it can be used to calculate the molar volume of cycloalkanes from molecular structure.

根据分子结构的特点，用距离矩阵和染色矩阵表征分子中基团的特性和连接性，通过探讨环烷烃摩尔体积与分子结构间的定量关系，发展一种直接根据分子结构计算环烷烃摩尔体积的方法。

METHODS: Human AMSCs were isolated in vitro sterilely. At the third passage, 0.5 mL single cell suspension at 1×109/L was obtained and transplanted by tail venous pathway in transplantation group mice, Mice in the control group were injected with an equal volume of saline. APP-gene mice in the normal group were left intact. 5'-bromo-2-deoxyuridine labeled third-generation AMSCs expression was detected in mice brain tissue by immunohistochemical method.

无菌条件下体外分离培养人羊膜间充质干细胞，传至第3代将细胞浓度调整为1×109 L-1，经尾静脉注入0.5 mL至细胞移植组转APP+基因小鼠体内；对照组经尾静脉注入同体积的生理盐水；正常组转APP-基因小鼠不给予任何干预措施。

According to fully expounding the geologic condition of the location of the bridge and the structure of pile foundation and the research level of the bearing capacity of group pile foundation in the present, the paper analyzes the mechanism of group effect and the impact on bearing capacity of pile foundation. The finite-element numerical analyses and self-balanced method are adopted in the present paper to calculate and analyze the vertical bearing capacity of pile group of north main-tower is cleared up and analyzed.

在全面阐述桥位区工程地质条件和桩基础组成结构以及群桩基础承载力研究现状的基础上，深入探讨了群桩效应及其对桩基础承载力影响的机理，分别采用自平衡试桩测试技术和三维土工有限元模拟方法研究了单桩竖向承载力问题，通过对试验和计算结果的整理、对比分析，确定了能够客观反映地基土工程特性的地基土计算参数。

Low dose Yiweitang group; 4. Diethylstilbestrol group; 5. Model control group. After 4 weeks intervention, get the left ovarie, a part of hypothalami and pituitary gland from head-off rat, and observe expression of ER, FSHR and GnRH by immune histochemistry method . Then extract RNA from the rihgt ovarie and the rest hypothalami and pituitary gland, so as to measure the expression of GnRHmRNA 、 ERmRNA 、 FSHRmRNA and P 16mRNA by RT-PCR. And the cerebrum were made to homogenate to examine SOD, GSH-PX and MDA.

各组实验动物灌药4周后，断头处死，取部分下丘脑、垂体及左侧卵巢组织固定切片，免疫组化法检测 ER 和 FSHR 表达、 GnRH ；取剩余部分下丘脑、垂体及右侧卵巢组织提取总 RNA ，用于 RT-PCR 检测下丘脑 GnRHmRNA ，下丘脑、垂体的 P 16mRNA 及下丘脑、垂体、卵巢的 ERmRNA 、 FSHRmRNA 基因表达；另外取部分大脑组织制作脑组织匀浆，用于 SOD 和 GSH-PX 酶活力以及 MDA 含量的测定。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。