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离散化

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In Chapter two, we discuss structure preserving discretization method for the one dimensional nonlinear Schr〓dinger equation with periodic boundary value condition by means of spectral method.

在第二章中,主要结果是讨论了一维非线性薛定谔方程的保结构离散化方法,采用谱方法给出了此方程的全离散计算格式。

In this paper, no-wait flow shops scheduling problems for a mixed discrete particle swarm optimization, through the establishment of the location of the vector encoding and scheduling program of mapping relations between the continuous particle swarm optimization algorithm is applied to discrete no-wait flow shops scheduling problem.

针对无等待流水线调度问题提出了一种混合离散化粒子群优化算法。通过建立位置矢量编码与调度方案之间的映射关系将连续的粒子群优化算法应用于离散的无等待流水线工件调度问题。

As we know, the resulting algebraic equations are large systems of non-linear equations with the expanded mixed finite element method for the equation.

用扩张混合有限元方法对其进行离散是常用的方法,其离散化所获得的代数方程组是一很大的非线性方程组。

The fuzzy clustering methods of the discretization is based on transitive closure.It has passed through a series of identical transformation. It may lose a lot of information in discretizated decision-making.

研究了基于模糊聚类的离散化方法,他们都是基于传递闭包的方法,经一系列的非恒等变换,使得离散后决策表信息丢失较多。

The mathematical model is dispersed by finite-volume method and the dispersed equations are solved by SIMPLER algorithm. This is the first time to solve a problem of drilling fluid mechanics with the numerical method of Newtonian fluid mechanics.

5首次将牛顿流体力学经常采用的数值方法用于钻井流体力学的研究中:用有限体积法离散钻井液流动和传热的数学模型,用Simpler算法求解该数学模型的离散化方程。

According to fully implicit method, seepage model of low-permeability fractured gas reservoirs are discretized with finite difference method, and corresponding numerical model, coefficient matrix and matrix element are obtained; then based on modern software engineering, numerical simulation software was correspondingly developed with Fortran95 programming language

按照全隐式离散化方法,采用有限差分方法对低渗裂缝性气藏渗流数学模型进行了离散,得到了相应的数值模型、系数矩阵和矩阵元素。然后基于现代软件工程的基本思想,用Fortran95语言开发了相应的数值模拟软件

At first, the small step synthesis method is applied to get the discretization of an anolog network, thus the discrete recursion formula in state space is obtained.

首先应用小步合成方法将模拟网络离散化,得到状态空间中的离散递推公式。

And then, using Matlab, we give some examples on regular surfaces. For example, plane, helicoidal, 3-dimensional Gauss profile, etc.

最后利用数学软件Matlab,给出了一系列的由光滑曲面上的参数曲线网经过离散化得到的离散参数曲线网,如平面,正螺面,三维Gauss型分布图,由3dMax生成的一般曲面等。

Pawlak based on indiscernibility only can deal with discrete attribute value, so how to discretize continuous data becomes the bottleneck of using rough set theory.

Pawlak提出的以不可分辨关系为核心的粗糙集方法处理的是离散属性值,而实际生活中的数据大多数是连续的属性值,因此需要首先对数据进行离散化处理,这已成为粗糙集理论实用性的瓶颈。

The rough set required that discretization should be maintained indiscernibility of the original decision-making system, however, many algorithms before permitted approximate quality descended controlled certain scope.

粗糙集理论中要求离散化保持原有决策系统的不可分辨关系,但以往的一些算法在离散过程中会使近似精度控制在可以接受的范围,即允许一定的错分。

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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。