约束

The conjugate gradient method is one of the most efficient methods for solving unconstrained optimization problems.

摘要共轭梯度法是求解无约束优化问题的一类有效方法。

The conjugate gradient method is one of the most effi...

共轭梯度方法是求解无约束优化问题的一类有效方法。

Conjugate gradient method is a method for solving nonlinear optimization problems, especially large-scale problems.

共轭梯度法是求解无约束优化问题的一种重要的方法，尤其适用于大规模优化问题的求解。

In this dissertation, we presented the global convergence properties of nonlinear conjugate gradient methods without line search and with strong Wolfe conditions, Goldstein inexact line search.

本文给出了无约束最优化算法—非线性共轭梯度法在不需线搜索和用强Wolfe条件下以及用Goldstein非精确线搜索产生搜索步长情况下的全局收敛性证明。

By the restriction of geometry optics and space conjugate symmetric relation between focused image surface and object, the FIS is changed into trim size, so the aim to measure three-dimensional is turned into reality.

利用聚焦像表面与物体间的几何光学的约束以及它们之间的空间共轭对称关系，将该三维表面变换到实际三维尺寸，以达到三维测量的目的。

This method uses quantified conjunctive normal form formulas to represent the unknown constraints in the circuit under verification, and needs no modification of the circuit structure so that it saves the computational resources significantly.

该方法使用量化的合取范式来表示电路中出现的未知约束，并且不需要修改电路结构，有效地节省了计算资源。此外，通过使用随机并行模拟增强了可满足性算法的错误检测能力。

In order to improve the limitations of GRASP, this paper proposed a new hybrid algorithm, which could resolve the problem of mixed constraints of pseudo-Boolean and conjunctive normal from.

为了改善GRASP的局限性，提出了一种能解决含有伪布尔和合取范式混合约束问题的新的混合算法。

Topology optimization aims at finding the optimal distribution of materials in a prescribed design domain and the optimal way of component connection in a discrete structure.

所谓拓扑优化，就是要在给定的约束条件下，在一块预先给定的设计区域中决定最优的材料分布方式或者构件之间的最优连接关系。

The tangent space and normal space of the robot motion curve is constructed by using Newton-Euler orthogonal method, which satisfies the restrictions of linear and angular momentum conservation of free-floating space robot system. An analytical expression of joint actuation torque in the floating state is given by using this method.

根据空间机器人自由漂浮状态时系统动量守恒的特点，采用Newton-Euler正交方法构建了满足系统动量守恒约束条件的空间机器人运动曲线法空间与切空间基底，并以此基础得到了自由飘浮状态下的空间机器人关节力矩的显式表达式。

Work ; reference system ; conservative force ; potential energy ; confinement

功； 参照系；保守力；势能；约束

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。