查询词典 Poisson

Governing equations are used to adopt primitive variables and the formulation of Poisson equation for pressure.

控制方程为原始变量、压力Poisson方程提法。

In this paper,we introduce a novel blending approach for both 2D and 3D curves with the discrete Poisson equation defined on piecewise linear curves as the theoretical foundation.

以定义在分段线性曲线上的离散Poisson方程为理论基础，提出了一种同时适用于平面和空间曲线形状渐变的方法。

In this thesis, We dealt with the same problems for generalized Poisson sheet.

本文对广义Poisson单讨论了相应的问题。

The classical compound Poisson risk model is one of principal models.

经典复合Poisson风险模型是主要的研究对象之一。

Compound Poisson the risk model of the classic is a kind of basic model.

经典的复合Poisson风险模型是一种基本的模型。

In the matter of efficiency, we can apply some fast Poisson solvers such as Fishpack.

在效率的考量上，使用快速的Poisson算法。

In this paper, a simplification of the Poisson integral in the density wave theory for spiral galaxies is given.

本文给出了旋涡星系密度波理论中Poisson积分的一种简化方法。

Methods To fit a Poisson regression model to analyze the relationship between the death toll and factors.

拟合Poisson回归模型，分析死亡人数与影响因素之间的关系。

Since the number of trips is a non-negative integer, truncated, and of endogenous stratification, this study empirically analyzes its recreational benefits by the On-site Poisson and truncated negative binomial with endogenous stratification of the Travel Cost Method. Besides, this study adopts TNBES to see how the number of trips disperse and takes the consumer surplus to assess benefits. As to visitors' valuation, this research uses the ordered probit to do empirical analysis and then divides all satisfaction factors by the factor analysis and cluster analysis into four factors and two clusters, which then are taken as explanatory variables.

考量旅游次数为非负整数、截断、内生分层等特质，本研究在游憩效益方面，采旅游成本法中的现场波松(On-site Poisson)、截断式内生分层负二项(Truncated Negtive Binomial with Endogenous Stratification， TNBES)模型做实证分析，并於TNBES模型检定旅游次数之扩散情形，效益之评估采消费者剩余为计算标准；在游客评价方面，采次序波比模型做实证分析，并将游客对科博馆各项因素满意度以因素分析、集群分析，区分为四大因素构面与二大集群，纳入游客评价为解释变数，并探讨消费者剩余对游客评价之影响。

In order to study the numerical method to solve the viscous incompressible flow with free surface, the 3-D mathematical model for steady and unsteady hydrodynamic problem had been established and closed by k-εbuoyant turbulence model. The algebraic coordinate transformation method was used to fit the free surface, the Runge-Kutta method of three step and second precision was devised to simulate the time step. A high precision up-winding compact scheme was studied for the convection term, and the generalized conjugate residual method was set to solve the Poisson equation.

为了研究粘性不可压缩三维问题的数值求解方法，本文从基本的Navier-Stokes方程出发，采用代数拟合方法处理自由表面，用三级二阶Runge-Kutta方法对时间步进过程进行了模拟，并且对对流项的高精度迎风格式进行了研究，给出了求解压力Poisson方程的广义共轭剩余法，从而建立了能够模拟有自由表面的粘性不可压缩问题的定常、非定常三维水动力学模型，并采用k—ε浮湍流模型对其进行封闭。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。