查询词典 algebraic equation

The transcendental characteristic equation is converted into a polynomial equation at the imaginary axis without any substitutions.

针对具有单输入反馈控制的单时滞电力系统，提出了一种求解时滞稳定裕度的简便方法。

The transcendental characteristic equation is converted into a polynomial equation at the imaginary axis without any substitutions. This method needs less computation than the CTCR method.

该方法将含有指数项的特征方程在虚轴上转化为多项式方程进行研究，无需任何中间变量代换，处理方法简单，计算量小。

Finite element discretization was carried out on the mathematical model to get a fully coupled finite element equation with the parameters of element nodal displacement and element nodal pore pressure as unknown variables. Finally, the transient nonlinear finite element equation in incremental form for reservoir fluid-solid coupling is obtained by means of time discretization in implicit difference scheme.

基于与微分方程等价的加权余量公式，在空间域采用有限元离散，对时间域进行隐式差分格式离散，导出了以单元节点位移和单元节点孔隙压力为未知量的储层流固耦合的非线性有限元增量方程。

A new graph theory methodology is presented for analysis of the unsteady flows in open channel network, including the structure and characteristics of the incidence matrix A, continuity equation and energy equation with matrix A.

提出了新的渠网非恒定流图论原理，包括适应渠网非恒定流特征的节支关联矩阵A的构建方法及性质分析，基于A的节点连续性矩阵方程和节点水深矩阵方程等。

FEM equation of fluid-solid coupled vibration was consisted by analyzing FEM equation of incompressible viscosity fluid and elastomer.

通过对弹性体振动的有限元方程和不可压缩粘性流体的有限元方程的分析，建立了弹性体与粘性流体流固耦合的有限元方程。

This paper consists of three parts:(1) application of Nano Indenter Ⅱ on new types of electronic encapsulation materials;(2) measurement of micro-scale plastic equation of state with Nano Indenter Ⅱ;(3) variation of micro-scale plastic equation of state after boiler tubes used over a long period of time.

论文有以下三部分内容：（1）纳米力学探针在发展新型电子封装材料中的应用；（2）用纳米力学探针压入法测定材料的微区塑性力学方程；（3）电厂锅炉管长期使用后微区塑性力学方程的变化。

Because of the fact that there exists a mathematical identity between the statically indeterminate moments in the compatibility equation and the fiber stresses in the equation of eccentrically loaded columns, in analyzing singly-connected rigid frames with degree of redundancy not more than 3, it is usually possible to use the familiar formula for short columns eccentrically loaded to analyse the indeterminate moments, which is called the column analogy.

在解析小於三次靜不定的單空剛構時，由於變形諧調條件中，靜不定彎矩的關係式與直柱偏心受壓中應力的關係式形式相似，常可利用在材料力學中已熟悉的偏心受壓柱公式來幫助解析，這就叫做柱比分析法。

We derived evolution equations of the corresponding Eu-clidean support functions.Finally we obtained that the solutions of the heat equation convergeto a point in infinite time,the solutions of the other equation converge to a point in a finite time

我们又得出相应的欧氏支撑函数的发展方程，最终得到热方程的解在无限时间时收敛于一点；另一发展方程的解在一个最大时间区间内存在，并且在有限时间内收敛于一点。

Functional differential equation; evolutional equations about population;neutral integral equation; cone; fixed point index; infinite delay; m -accretive operator; random fixed point; condensing map

论文导师孙涛，论文学位硕士，论文专业基础数学论文单位东北大学，点击次数 14，论文页数 70页File Size1670K

On the basis of Chen's equation of finite deformation mechanics with a dragging coordinator system,the paper studied the meaning of elastic parameters and constitutive equation in the medium equivalent to classic infinitesimal deformation mechanics that cracked,large deformation formation corresponds to and relevant features of seismic velocity.

基于陈至达的拖带坐标系的变形力学方程，研究了大变形破裂地层对应的经典无限小变形力学的等效介质弹性参数的含义、物性方程和相应的地震反射波的速度特性。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。