查询词典 explicit difference scheme

The main research contents are as follows:1. Through massive calculation, analysis and comparison, sum up the similarities and differences between the special-shaped cross sections and rectangular cross sections in mechanical features, between reinforced concrete special-shaped columns and rectangular columns in load-bearing capacity, ductility performance and provide necessary basic concepts and data for further understanding the characteristics of the special-shaped columns;2. Through massive elastic calculations and elasto-plastic analysis, under the preconditions of satisfying the code's requirements for axial compression ratio, limit value of lateral displacement and load-bearing capacity of normal section,oblique section and beam-column joint, under circumstances of different intensity of earthquake, structure dead weight, sort of site and column grid bay dimension, the variation regularity of maximum suitable height of structure, and thus sum up the maximum suitable height of structure for code for the purpose of macro-control while deciding the design scheme;3. Make a preliminary study on the stress feature of reinforced concrete special-shaped column and Z-shaped column of which the ratio of limb length to limb thickness is between 4~5 ,and the preliminary design method is suggested;4. Through elato-plastic time history dynamic analysis of typical projects, check up the weak storey of the special-shaped column structure and yielding, breaking and collapse mechanism to satisfy the earthquake resistant requirement to buildings of remaining stand under strong earthquake;5. Derive for project use simplified calculation formula of vibration period, suitable vibration period, suitable rigidity of special-shaped column structure through theoretical analysis, and provide an easy and practical method for deciding the structure scheme economically, safely and reasonably;6. Based on the study achievements in theory and massive analysis and calculations of this paper, sum up the regularities of inner force, deformation of special-shaped column structure and seismic conceptual design, and thus the suggection of seismic design of special-shaped column structures is presented.

本文研究的主要内容如下：通过大量的计算、分析和对比，总结出异形截面与矩形截面在力学特性、钢筋混凝土异形截面柱与矩形截面柱在承载能力、延性性能等方面的异同，为深入了解异形截面柱的特点提供必要的基本概念和数据；通过大量的弹性及弹塑性计算分析，在满足规程对轴压比、侧移限值及正截面、斜截面、节点承载力抗震验算要求的前提下，在不同抗震设防烈度、结构自重、场地类别及柱网开间尺寸情况下最大适宜高度的变化规律，并在此基础上总结归纳出异形柱结构的最大适用高度规定，可用于规程，以便于在确定方案时起到宏观控制的作用；对肢长与肢厚比在4～5的钢筋混凝土异形截面柱及Z形柱的受力特点进行初步探讨，提出初步的设计方法；通过对典型工程的弹塑性动力时程分析，检验异形柱结构的薄弱层及屈服、破坏、倒塌机制，以达到建筑物大震不倒的抗震设防要求；通过理论分析，推导出异形柱结构自振周期，以及适宜自振周期、适宜刚度的工程实用简化计算公式，为经济、安全、合理地确定结构方案提供简便实用的方法；在本文理论分析、计算以及大量的研究成果基础上，总结归纳出异形柱结构内力、变形的规律及抗震概念设计内容，并在此基础上提出异形柱结构的抗震设计建议。

Moreover, they have been applied to two typical electrical main systems reliability assessment, 3/2 breakers scheme and double bus bar scheme. The simulation results have shown the advantages of this method.

基于最小状态割集建立了多状态电气主接线元件的贝叶斯网络模型，对常用的一个半断路器接线方案和双母线接线方案的电气主接线进行了可靠性评估，体现了应用贝叶斯网络进行电气主接线可靠性评估的优势。

As reported, the celestial guidance of single-star scheme can correct initial localization, orientation errors and constant drifts of gyro in mobile launching ballistic missile, while we consider that the scheme can only compensate for partial constant gyro drift .

有参考文献认为，采用单星制导即可以估计和补偿初始定位误差、初始方位误差、陀螺常值漂移等误差源导致的弹载惯导系统定位误差，但我们认为，单星制导不能估计出全部的常值陀螺漂移。

In chapter 8, we discuss admissibility of strict Pi ps sampling scheme in a class of unequal probability without replacement sampling scheme presented by R.R.

第四章在前两章的基础上，讨论了整群抽样和分层抽样均含有辅助信息是时，补充辅助样本抽样方案的精度。

Then the circumfluence R.M.S. compensation method is certified as the circumfluence suppressing scheme after the analysis of the current-averaging and circumfluence suppressing theory.Results of the algorithm validation for this parallel control scheme are also included.

此后建立了逆变器并联系统的数学模型，在对该系统分析负载电流均分原理和环流抑制原理的基础上，确立将环流有效值补偿波形调制比作为环流抑制策略，对该并联控制策略给出了算法验证结果。

The Laplace modified method is used in time step and the backward Euler scheme and Crank- Nicolson scheme are developed. By applying the collocation method for the nonlinear term, the computation time is greatly saved.

采用Laplace修正的方法对时间层进行离散，建立了向后Euler和Crank-Nicolsoa两种格式；对于非线性项采用配点法，这样可以节约计算量。

This discretization scheme replaced the gradient magnitude with the absolute value of the difference and omitted an item of the original model. The smoothing velocity and effect are affected by these simplifications according to the analyses of this paper.

这个离散格式用差商代替梯度，并略去了原模型的一项，本文通过理论分析发现这些简化影响了平滑的速度和效果。

How to establish the adjoint medel is discussed by using the Gateaux differential of function and the concepts of the adjoint operators in Hibert space. At the same time it is verified that selecting proper finite difference scheme can ensure discrete form remaining the same adjoint r...

文中利用泛函的Gateaux微分和Hilbert空间上伴随算子的概念讨论了连续的伴随模型的建立，并通过选择适当的差分格式离散伴随模型，使其保持连续时的伴随关系，同时给出了水温初始场最优化过程及相应的同化试验数值结果。

The numerical solution of incompressible viscous flow over an aerofoil is obtained by H-type grids and a special difference scheme.

本文用H型网格和特殊的差分格式数值求解了粘性不可压缩叶型绕流。

The technique of boundary-fitted coordinate system is used to overcome the difficulties resulting from the complicated shapes of natural river boundaries;the method of alternating direction implicit finite difference scheme is used to solve the partial differential equations in the transformed plane;and the technique of moving boundary is used to deal with the river bed exposed to water surface.

用适体坐标技术克服天然河道复杂的几何边界给有限差分法所带来的困难；用交替方向隐式有限差分格式求解变换平面上的偏微分方程；用动边界技术处理河床的淹露。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。