查询词典 projection gradient method

At the same time, the algorithms of hexahedral mesh generation using isoparametric transformation based on cylindrical coordinate and sphere coordinate respectively are also integrated with Subdivision-Mapping Method The technique of mesh gradient control is also presented.

还提出了扫描法六面体网格生成算法、基于圆柱坐标和球坐标系的使用等参映射法的六面体网格生成算法以及网格局部加密算法，并完成了相应模块的开发工作。

A new method for calculating equivalent overall reaction rate was bring forward,in which the gradient differential coefficient of local Damkohler number instead of temperature,on the surface of the hot rod was adopted as an ignition criterion in the paper.

据此提出了一种新的计算等效总体反应率的方法，同时采用热棒表面处的当地Damkohler数的梯度替代传统的温度梯度作为着火判据。

The gradient ceramic-metal composites was prepared by the hot-press sintering method, and the static and dynamic mechanical performance were tested.

利用热压烧结法制备了梯度型陶瓷-金属复合材料，并对其静态压缩性能和动态冲击压缩性能进行了测试。

Because this method has smaller local relative errors and fast calculation efficiency,it is applicable for 2-D data with low gradient such as hypsography data and ray tracing time tables.

由于此方法具有局部误差小、计算高效的特征，可以适用于数据梯度较小的二维系统数据的曲面拟合和数据压缩，如地形高程数据和射线追踪走时表。

The calcula- tion method of the mutual inductance gradient is discussed,and the control system is designed in detail.

论述了互感梯度的计算方法，并给出了控制系统的具体设计和Matlab仿真结果。

In the matching stage, the angle of feature vectors is used as the similarity measure in the high dimensional space directly. This similarity measure is invariant to the linear transformation of feature vectors. Compared with SIFT and normalized correlation, the proposed method needs no primary features such as edges, corners, gradient or shapes which are very unstable in low contrast and low NSR images.

在匹配过程中，以向量之间夹角的大小作为相似度度量，直接利用图像的灰度信息在高维向量空间中考虑图像之间的相似度，克服了在低照度、低信噪比的图像中求边缘、角点、梯度和形状等特征的困难，不受向量模大小以及向量平移的影响，即相似度的计算是线性光照不变的。

It is difficult to solve the optimal iteration step and Lagrange multiplier in the gradient optimal power flow solutions. The saddle node iteration method was applied to solve the above problems based on a certain supposition.

在梯度法最优潮流的求解过程中，确定不等式约束的拉格朗日乘子以及求取最优步长等比较困难，文中在采取一定假设的基础上，运用鞍点迭代算法进行上述问题的求解。

More than that, the use of conjugate gradient accelerated Jacobi method improves further the computational efficiency of the model.

同时，对离散后得到的五点差分方程，用共轭斜量加速Jacobi法进行求解，使计算效率进一步提高。

The theory of KEM for simple soils limit analysis is dissertated in detail. Based on this, KEM has been developed to complicated soils limit analysis for the first time. Appropriate functions and variables of different engineering practice are presented, and the minimization technique for functions is adopted the conjugate gradient method.

在详细论述了土体极限分析KEM的基本原理、对均质土体极限分析KEM研究的基础上，根据KEM的基本原理，在国内首次将KEM扩展应用到复杂土体的极限分析中，根据工程问题的实际情况找出了合适的KEM土体极限分析目标函数和自变量，对目标函数的优化方法采用了变尺度法。

Simulations are carried out upon square-aperture beam using Legendre polynomial. Conjugate gradient method is used and optimization is performed for several steps to reduce executing time.

针对方光束口径，利用 Legendre 多项式模拟光束波前分布，利用共轭梯度算法对多项式系数进行了优化计算；优化过程分为几步进行以减少计算时间。

Effective local search tactics reaches local searchers when they are ready to buy - with every way that it is possible for them to buy from you.

有效的地方搜索策略达到当地的搜索，当他们准备购买-以各种方式，这是他们有可能从您那里进行购买。

The first two are periodic sentences for their beginnings; and the fifth and the last are also periodic sentences each for the embedding of a parenthetic structure.

1960年代中后期，当战后女权主义和当时的许多其他抗议运动在西欧和北美发展成某种势力时，性别的概念演绎成补充和延伸生物性别差异的概念。