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This make it difficult to know the essence of fluidized beds. In order to viewthe motion behavior of a single particle in a fluidized bed in a reasonable cost, thegas-solid flow in a fluidized bed is modeled by a combined approach of discrete particlemethod and computational fluid dynamics, in which the motion ofindividual Particles is obtained by solving Newton\'s second law of motion and gas flowby the Navier-Stokes equation based on the concept of local average.

为了用数值模拟方法来弥补传统实验方法的不足，达到从单个颗粒的尺度上来研究流化床中颗粒的运动和气体流场的剧烈变化情况的目的，本论文建立了基于用Newton第二定律计算单个颗粒运动轨迹的离散颗粒法和基于区域平均值的计算流体动力学方法的数学模型的建立和求解过程；并依据Newton第三定律建立了DPM模型和CFD模型的耦合模型，编写和调试了DPM和CFD的耦合程序。

Direct against the defects of high cost,complicated computation and fixed accuracy of calculation on cabin capacity based on CAD software,a kind of cabin capacity computing method based on nodal point,which stands alone to the CAD system,was realized.

针对基于CAD软件的船舱容量计算成本较高、计算复杂、并且精度固定的缺点，实现了一种独立于CAD系统，基于型值点的舱容算法，用较低的成本，就可以方便快速地计算出船舱中液体的容积。

On the basis of Venigalla\'s work,we adopted two path-based algorithms, namely,gradient projection algorithm and disaggregated simplicial decomposition algorithm to solve nonadditive path cost traffic assignment problem under different engine operating modes.We compared the above two algorithms in a network example which showed that compared with the traditional Frank-Wolfe algorithm, the two path-based algorithms had a more quicker convergency while getting optimal solution,and it can obtain a satisfying solution in most cases.

2在Venigalla等人研究工作的基础上，分别采用基于路径的梯度投影算法(gradient projection，GP)和基于路径的非集计的单纯分解算法(disaggregated simplicial decomposition，DSD)来求解考虑不同发动机启动模式下，具有非可加路径费用的交通分配问题，在实例计算中比较了这两种算法的计算性能。

It introduces the method of measuring theparameter of the multiphase flow, the familiar the equipment measuring the multiphase flow,analyzed contrastively the plan based corrrlation measurement and nondisjunction and basedgas- liquid adaptive cylindrical cyclone, the paper chooses the last one for the research plan.

介绍了多相流参数测量的方法；介绍了常见的多相流测量装置；对比分析了基于相关测量的不分离的测量方案和基于小型管柱式气液旋流自适应分离的分离测量方案，选择了后一种方案作为本文的研究方案。

On the base of RTK and ethernet technique, this paper proposed a plan on ship automatic berthing system, and pointed out a new development trend in ship nonlinear control research, that is, a logic-based hybrid control and its applications to ship automatic berthing.

基于RTK技术和以太网技术给出了船舶自动靠离泊智能系统方案，同时指出了当前船舶运动非线性控制研究发展的一个新方向：一种基于逻辑的混合控制策略在船舶自动靠离泊控制设计中的应用。

Related concepts, methods and the up-to-the-date situation are briefly reviewed at first. Then, thorough research is conducted to feature based rigid registration, image content based rigid image registration, and nonrigid image registration respectively.

首先对医学图像配准的有关概念、方法及其研究现状进行了综述，然后分别深入研究了基于图像几何特征的刚性配准、基于图像灰度的刚性配准和图像的非刚性配准等问题。

The core of this algorithm is an object tracker that tracks multiple nonrigid objects using an appearancebased tracking method. The initial model is derived automatically and a new model update method based on the concept of the moving connected components is proposed.

算法的核心是一个对象跟踪器，它利用一种基于对象行为的跟踪算法对多个非刚体目标有效地进行对象跟踪，并与后续帧进行匹配，然后采用一种基于运动相连成分的模型刷新方法对模型的每一帧进行刷新。

At present,the hybridization of Differential Evolution with local search method confines to DE with a crossover based local search method.A novel differential evolution algorithm with best-individual based Local Search strategy is proposed.In LSDE,a normal distribution operator is introduced to automatically modify search length,and time-varying factors are introduced to modify the two parameters of DE.

针对目前差分进化与局部搜索相结合仅局限于基于交叉的局部搜索的方法，提出了一种基于最佳个体局部搜索策略的差分进化算法，并引入正态分布算子自动调整搜索步长和时变差分进化因子调整DE的两个参数。

Several key issues related to damage identification of structural health monitoring are expounded. A method for damage positioning, which is on the basis of the normalized change ratio of frequency, is developed. Then, a set of damage identification techniques based on modal parameter and neural network is put forward.

阐述结构健康监测中损伤识别的关键问题，介绍基于正则化的频率变化率的损伤定位方法，提出一套基于模态参数和神经网络的损伤识别技术。

Based on practically stable principle, this paper extends the concept of sliding mode to sliding zone attraction and presents a new velocity observer for robotic tracking control It can guarantee observational error is irrelative to motion trajectory. By means of it, a robust controller is further derived.

本文基于实际稳定性原理，推广了滑动模控制，提出了滑动域吸引性设计思想，并以此设计了机械手速度观测器，以及基于观测器的机械手输出反馈控制系统，与以往观测方案不同的是，这一观测器可以保证其观测误差与机械手运动轨迹无关。

The dynamic variation in content of cndogenous abscisic acid,indoleacetic acid,gibberellinsand isopentenyladenodines of normal juvenilefruit and dropped fruit was measured with enzyme linked immunosorbent assayin the course of physiological fruit drop of 'Shuizhang Longan.

应用酶联免疫法测定了水涨龙眼生理落果期间正常幼果和脱落幼果中内源激素ABA、IAA、GAs及iPAs含量的变化。

Zillions of code examples on the web.

网上数量巨大的代码例程。