查询词典 Poisson bracket

The problem has been studied from two sides, firstly, from the viewpoint of applicability, based on the development strategic objectives of the oil company, with the aim to unify the exploration and extraction decisions of the resources in an integrated framework, and integrate the macro economic and technical objectives with micro economic and technical models of an oil well, an integrated non-linear dynamic optimal control model has been constructed, the objective is the benefit maximum of the exploration and extraction of the resources, and the optimalstrategies are obtained by changing the problem into a non-linear mathematical programming problem, on the other hand, from the more macro level, based on the analysis of the characteristics of the exploration and extraction activities of oil and gas resources, a conclusion is easily deduced that the procedure is full of randomicity, then discovering procedure of oil deposit is proved to be a Poisson process, and the reserves process is a supermartingale process, so the model of exploration discovery rate and the reserves model could be constructed.

其次从相对更宏观的层次上，通过对油气资源勘探与开发的特点分析，认为具有很强的随机性，证明了勘探活动发现油气藏的过程为一泊松过程，所发现的油气藏储量为一上鞅过程，在此基础上，建立了油气藏勘探发现率模型及储量模型，在油气价格服从几何布朗运动条件下，以油气开采收益最大化为目标，建立了一个油气资源勘探与开发的随机最优控制模型，采用动态规划方法得到了值函数的HJB方程，并针对方程的特点，以及方程及其变量所对应的经济学意义，对最优策略的求解进行了一些讨论。

of comparing practical case evaluation with gas testing result is that the gas- bearing layer in VU Area can be identified by cross-plot of Poisson's ratio and compressional slowness, cross-plot of tangential stress and compressional slowness, as well as negative anomaly of tangential stress.

通过实例评价结果与试气结果的对比认为在YU地区，泊松比与纵波时差交会，切向应力与纵波时差交会，以及切向应力的负异常，均能较好地识别气层。

In this paper, a computer programme is discussed, which, as a mathema-tical model, can be used to calculate the probability distribution as respects random variable-normal, lognormal, binomial, negative binomial and Poisson distributions, and can be used for x2 test of goodness of fit as well.

本文是计算随机变量概率分布的数学模型—正态分布，对数正态分布、二项分布、负二项分布。普阿松分布及检验X~2适度检验的一个计算机程序。

The process of random load action was described with the Poisson stochastic process and the time-dependent reliability models of series system, parallel system and k/n system were developed with the probability differential equation and total probability formula when strength degenerated as time.

采用泊松随机过程来描述载荷的作用过程，运用概率微分方程和全概率公式建立了强度随时间退化时的串联系统、并联系统以及k/n系统动态可靠性模型。

The process of random load action was described with the Poisson stochastic process and the time de pendent reliability models of series system, parallel system and k/n system were developed with the probability differential equation and total probability formula when strength degenerated as time, Taking the degeneration of strength following the exponential rule as an example, the relationships between the reliability and failure rate of system and time were studied.

采用泊松随机过程来描述载荷的作用过程，运用概率微分方程和全概率公式建立了强度随时间退化时的串联系统、并联系统以及k/n系统动态可靠性模型。以强度退化服从指数退化规律为例，研究了串联系统、并联系统以及k/n系统的可靠度和失效率随时间的变化规律。

The third part discusses one of the core context——demand analysis,it mainly analyzes the Randomness of demand,including source and influence.Then it analyzes Poisson demand process including Characteristics,proof and the thought,feasibility and necessity of transformation to Normal Distribution and it gives the way and process of transformation——parameter estimation,Then it verifies unbias of parameter and adopts\'test of hypothesis.

第三章探讨了库存成本中的核心内容之一——需求分析，即主要针对需求的随机性进行分析，包括随机性的来源与影响，继而对需求为泊松分布进行分析，包括特点，证明及其向正态分布的转化的思想，可行性及和必要性，并给出了转化的方法及步骤——参数估计，并进行参数估计的无偏检验和假设检验。

From the self-consistent solution of 2-D Poisson equation and Schrdinger equation,the electron states and pinch-off behavior in quantum well channel of GaN HFET under longitudinal and transversal electric field were investigated.

从自洽求解二维泊松方程和薛定谔方程出发，研究了纵、横向电场作用下GaNHFET沟道中的电子态和夹断特性。

In this paper, the main issue is about parameters involved with the stock's volatility, which are the σ in the Winner process and the λ and δ in the Poisson process, under the special cases of jump diffusion models with two assumptions that are independence between option prices' errors and stock and normal error between pricing formula and true price.

本论文在跳跃扩散模型中，以跳跃比例大小为非随机的常数或对数常态分配此种特例，和选择权价格的误差与股价过程为独立并且与理论公式存有常态误差值的两个假设下，去对模型中Winner过程里的σ以及Poisson过程里的λ和δ，这几个影响股价变异数的重要参数作讨论。

It is found that amplitude-squared squeezing can be created by 4-photon unitary operator S4 acting on the vacuum state and this shows that the amplitude-squared squeezing can be created by 4-photon unitary operator S4 acting on the vacuum state and this shows that the amplitude-squared squeezing is a new nonclassical effect of light field which is independent of the second order squeezing, antibunching and sub-poisson statistics.

发现4个光子么正算符S4对真空态的作用可以产生振幅平方压缩，这表明振幅平方压缩是一种独立于二阶压缩、反聚束以及亚泊松统计分布的新的光场非经典效应。标签 K光子么正算符相干态真空态振幅平方压缩 K-photon unitary operator coherent state vacuum state amplitudesquared squeezing

In this paper, one example from Zhongyuan Oilfield, Wen-33-26 well with long spacing acoustic wave train log is given. The measured ''shear wave velocity was treated as Rayleigh wave velocity. The poisson ratio and Young...

本文以中原油田Wen-33-26井的长源距声波全波列资料为例，将所测得的井下"横波"速度当作瑞利波速度处理，求得的泊松比和杨氏弹性模量值更为合理。

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For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。