reduction

Routh method of reduction of Birkhoffian systems;

Birkhoff系统约化的Routh方法

Lotka-Volterra equations:reduction,classification and dynamics;

Lotka-Volterra方程:约化、分类及动力学性质

Symmetry Reductions and Similarity Solutions of Variant Boussinesq Equation Systems;

二类变式Boussinesq方程的对称性约化和精确解

Chapter 2 gives an account of the reducing of polynomials and the reducing algorithm of Groebner basis.

第二章阐述多项式约化问题并介绍了Groebner基约化算法。

Chapter 2 give an account of the reducing of polynomial group, adopting a kind of changed sequence to drop the degree of polynomial, the 3th chapter tell about the improved arithmetic of Grobner basis.

论文共分为五部分，第一部分是绪论，介绍了计算机代数和Gr(?)bner基的有关的基本概念、基本工具及其进展；第二部分阐述的是多项式约化问题，对多元多项式组化简和约化计算时，为了减少计算的复杂度与误差，把表达式中的一些变元较高的幂进行降幂或是因式分解，这里采用修正的序关系，在约化过程中防止某些变元的幂急剧增大，同时又可达到化简的目的。

Using the Properties of Lie Groups Symmetry Reduce Nonlinear Evolution Equations

利用Lie对称约化非线性发展方程

That the reduced kinematic control equations of the cable-beam composite structure are established.

利用索 -梁组合结构的连接条件及边界条件 ,建立了索 -梁组合结构的约化运动学控制方程。

Discover as a result:(1)though the absorption coefficient and laser brief strength is less in steam-ion mix area.

修正了激光辐照下金属材料复合气化汽离混合区对激光的吸收系数,导出了汽离混合区激光强度的时空分布关系,分析了汽离混合区的吸收系数和激光强度与关联参数的牵联机制,结果发现:(1)汽离混合区的吸收系数和激光约化强度虽然较小,但随时间分别成正弦和余弦规律分布。

On the basis of segmenting 3D measured data with feature design intention, the parameter extraction of the features obtained by several common modeling methods such as extruding, revolving, and the fitting of sketch profile are transformed into the resolution of constraint optimization problem.

在对测量数据根据特征设计意图进行分块的基础上,将常见造型特征如拉伸和旋转特征的参数提取以及草图轮廓的拟合转化为相应的约束优化问题进行求解,然后利用CATIA二次开发平台CAA中提供的接口进行特征重建,生成参数化的实体特征模型。

As a Genetic Algorithm handles the constraint optimization problem,the dif ficulty is how to solve constraints.

遗传算法求解约束优化问题时,面临的关键问题之一就是如何处理约束条件。

The HPSO combines the particle swarm optimization with constraint optimization and direct search.

为解决电力系统中的经济负荷分配问题,提出一种将约束优化与粒子群优化算法相结合的混合算法,同时引入直接搜索方法。

The Pollution Problems and Treating Patterns of Intensive Hoggeries;

集约化养猪场的污染问题及治理模式

Imagination of intensive production at Baiyunebo;

白云鄂博铁矿集约化生产设想

Research on Industry Intensive Theory and Chinese Automobile Industry Intensive Development;

产业集约化理论与中国汽车产业集约化发展研究

The Proper Action of a Reductive Lie Group on the Homogeneous Space of Reductive Type;

约化群对约化型齐性空间的proper作用

Reduced Grbner Bases and Universal Grbner Basis;

约化Grbner基与泛Grbner基

Research on Industrial Intension and the Way of Achieving Industrial Intensive Development in China;

产业集约化及我国产业实现集约化途径研究

On Dissimilation of Contract;

契约的异化与异化的契约——以事实契约为视角

A personification of wickedness and ungodliness alluded to in the Old and New Testaments.

彼勒《旧约》和《新约》中邪恶和罪孽的化身

Conference of Ministers Responsible for Sports of the States Parties to the European Cultural Convention

欧洲文化公约缔约国体育部长会议

Covenant with the Nature: Reflection Triggered by Plight on Contract Evolution;

与自然立约—困境引发的契约进化思考

With Modern Contract Theory to Solve the Problem of high rate on disobey Contract;

运用现代契约理论化解高违约率难题

The Impact of Restriction and Sanction on the Changes of Tool Marks

约束和约束力对工具痕迹变化的影响

SUMT (Sequential Unconstrained Minimization Technique)

顺序无约束极小化技术

sequential unconstrained minimization technique

序贯无约束极小化方法

Treaty of Central American Economic Integration

中美洲经济一体化条约

) Multilateral Convention on Banning Chemical Weapons

禁止化学武器多边公约

John was conditioned in chemistry.

约翰被允许补考化学。

Convention on the Universal prohibition of Chemical Weapons

全面禁止化学武器公约

Nonmonotonic Trust Region Algorithms for Unconstrained and Constrained Optimization;

无约束优化与约束优化的非单调信赖域算法

On Culture Differences and Cultural Regulations and Restrictions during the Course of Cross-Culture Communication

跨文化交际中的文化差异及文化规约

Factor Contract is Superior to Commodity Contract;

商品契约优于要素契约——以农业产业化经营中的契约选择为例