查询词典 Poisson bracket

All these work are finished above the study of abundant interrelated literatures.b Two-dimensional Poisson equation is solved by both Chebyshev Tau method and Chebyshev Galerkin method, the numerical uncoils are compared with the exact one.

对于二维Poisson方程边值问题，本文分别推导了Chebyshev Tau方法和Chebyshev Galerkin方法的计算公式，实现了相应的数值模拟。

Taking the surrounding rock of deep-buried caverns at the Jinping Second Class Waterpower Station as an example,uniaxial compression tests are performed to study the influence of temperature on the Poisson ratio and elastic modulus under different temperatures.

选取锦屏二级水电站引水隧洞围岩大理岩作为试样，进行不同温度条件下的单轴压缩试验，分析温度作用对大理岩弹性模量、泊松比等力学参数的影响。

The basic parameters of cement are elastic modulus, poisson's ratio and the thickness of cement;they do have impact on the coefficient of pressure transmission of surrounding rock and the coefficient of inflation pressure transmission of casing

水泥环的基本参数弹性模量、泊松比和厚度对围压压力传递系数和套管压力传递系数都有影响

Also the stress on the end side of the specimen increases with Poisson's ratio.

结果表明，泊松比越大，试样内的拉应力范围越大，试样端面上的拉应力也越大。

And to the problems of special distribution of underlying assets, this paper analyzes the price movement of the underlying assets from the arrival of information, the market efficiency and the market mechanism which decide the price. It also studies the problem of real option pricing when the underlying assets follow the pure jump Poisson, mixed jump-diffusion Merton and mean-reversion model, and obtains the price formula or partial differential equation to price and hedge the real option.

对实物资产的特殊价值分布问题，本文从决定资产价格的市场机制、信息到达方式及市场效率三方面来分析实物资产的价格变动特征；并重点研究当基本资产遵循纯跳跃Poisson过程、跳跃扩散Merton过程及均值回复过程时的实物期权定价问题，运用复制定价和随机动态规划方法，得到确定实物期权价值和风险对冲策略的偏微分方程。

In order to predict the surplus fatigue life of concrete under nondestructive condition,the effect of some parameters such as elastics modulus,Poisson s ratio and density of concrete on the fatigue life is discussed in this paper.

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Based on the basic law of electrostatics and the boundary-value problems of Poisson equation, two opposite thoughts of the study that electrets can either be designed to provide homogeneous electric fields or be designed to shield electric fields are discussed.

利用驻极体具有的可任意切割、拼装、黏接的特性，从静电学的基本规律及由泊松方程构成的静电边值问题出发，对驻极体既可对外提供电场又可设计为屏蔽电场的 2个相异思维的研究结果展开了讨论，从而，从理论上指出驻极体既可以制成提供均匀外场的材料又可以制成一种透气性静电屏蔽材料。

The soliton hierarchies associated with the modified second order polynomialeigenvalue problems can be factorized into the commuting x- and 〓-constrainedflows, the r-matrices and classical Poisson structures for the x- and 〓-constrained flows are constructed.

与修正的二阶多项式特征值问题相联系的孤立子方程族可以被分解为相互交换的x-和〓-约束系统，本文求出了约束系统的r-矩阵和经典Poisson结构。

The shear modulus and mass density of FUMs are assumed to be of exponential form and the Poisson's ratio is assumed to be constant.

假设裂纹突然受到均匀载荷作用，材料的剪切模量和密度为指数形式模型，泊松比为常数。

Based on logging and petrophysics analysis,the elastic parameters(such as elastic impedance,Poisson's ratio and so on) of the effective reservoir are obtained by prestack inversion,and fluid properties are analyzed,which can provide reference for drilling well location.

针对苏里格地区盒8段有效储层厚度薄，横向变化快，常规解释结果多解性强的特点，从测井、岩石物理分析入手，开展叠前地震反演提取有效储层的弹性参数，综合分析预测储层的含流体特性，为钻探井位提供依据。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。