查询词典 space model

Firstly, the authors create various initial colonies and introduce quinary coding strategy to improve searching speed. Then, they adopt random selection mechanism without reimbursement to prevent premature convergence. Twopoint crossover and multipoint mutation are adopted to extend searching range of model space and to keep individual diversity.

首先，产生多样化的初始群体，引入五进制的编码策略提高搜索速度，然后采用无退还随机选择机制防止收敛早熟，采取两点交叉及多点变异方案以扩大模型空间的搜索范围和保持个体的多样性。

On the basis of comparison of several algorithms of the calculation of unstable resonator"s mode. Fast Fourier transform method is chosen in this paper. The model of multi-layer distribution of gain is established. Sampling granularity in real space used in FFT, quotient of guard band and distance between subsections are made certain respectively. The convergence criterion of root-mean-square of plural y which is the quotient of the optical field"s distributions separated by one pass is established. Under the circs of multi-kind of distribution of gain and different measurement of distortion, the output optical field distribution is calculated.

在比较了各种计算腔模方法的基础上，根据角谱传播理论，选择FFT算法，建立谐振腔内多层增益分布模型，分别确定了FFT算法的空间采样间隔、保护带系数和分段计算的距离，选取光场往返一次之比的均方根值收敛准则，计算多种增益分布、不同镜面变形时的谐振腔输出光场分布，同时计算该光场的远场分布和传输有限距离之后的分布。

Aiming at the deficiencies of analysis capacity from different levels and the deficiencies of fuzzy reasoning,a product function granular model is built using the theory of granular computing of quotient space.Function granular representation,function granular operation and the function modeling method based on similarity degree calculation are also proposed.

针对目前功能建模多层次分析能力不足且缺乏模糊推理手段，将商空间粒度计算引入产品功能建模，提出了产品功能粒度模型，包括功能粒度表示、功能粒度运算规则以及基于相似计算的功能建模方法。

Proposes the fuzzy multi-dimensional data model based on fuzzy quotient space theory.

论文的主要工作和创新体现为以下四点：1。

Quotient space theory has widespread application in the problem solving domain by its solid theoretical basis and rather perfect mathematical model.

商空间理论以其坚实的理论基础和较为完美的数学模型，在问题求解领域中有着广泛的应用。

Theory of quotient space ,Granularity Agent ,Granularity routing model ,Routing Simulation Algorithm

商空间理论，粒度Agent，粒度路由模型，路由仿真算法

A rational space dynamic model of finite element structural analysis is established for long-span bridges.

结合大跨度铁路桥梁结构的特点，建立了合理的有限元空间动力分析模型。

Thus it could effectively apply observations to ocean model to produce reanalysis product with more complete time-space distribution.

因而海洋资料同化能有效的将现有的海洋观测融入海洋模式中，从而可以提供时空分布更加完善的再分析资料。

Based on the research results of modeling test and numerical analysis of surrounding rock deformation behavior of the full-face excavation tunnel in karst regions,the regular time-space curve model of surrounding rock deformation was proposed.

重庆交通学院河海工程系重庆400074，重庆交通学院河海工程系重庆400074摘要：运用相似模型试验和数值分析成果，分析岩溶区公路隧道在全断面开挖过程中的围岩变形特性。

We investigated Gaussian model on some fractal lattices firstly with anexactly Real-Space Renormalization Group method.

由于分形结构不具备欧几里得空间晶格所具有的空间平移不变性，通常采用的基于傅立叶变换的动量空间重正化群方法已经不再适用。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。