查询词典 falling gradient

In the first section, we introduce the development of the conjugate gradient methods.

在第一部分中我们介绍了共轭梯度法的发展过程及其研究现状。

So in this paper, we introduce the multi-grid algorithm and conjugate gradient algorithm to solve this system.

为说明该方法的优点，最后对用这两种方法处理的超声医学图像的收敛曲线和平滑结果进行了比较

In comparison with classic conjugate gradient methods, the decrease of objective function is contained in the two new methods.

与经典的共轭梯度法的区别是新方法中体现了函数值下降量的信息。

Diversification effect is the key to the economic capital allocation, the consistency of principle Meeting no undercut and the corresponding gradient method was introduced to the economic capital allocation; the residual risk based on the risk and cost also was introduced to the allocation of economic capital.

组合效应是经济资本配置的关键，满足无缩减性的一致性原则及相应的梯度法被引入到经济资本配置的研究中；基于风险和成本相统一的风险残余法也被引入到经济资本配置的研究。

The constant of proportionality between the diffusion flux and the concentration gradient in Fick's first law.

Fick第一定律中，扩散通量和浓度梯度之间的比例系数。其量级表示了原子扩散的速度。

The flow is induced under the application of a constant pressure gradient.

以下是诱导流动的应用常数压力梯度。

Firstly, the approach formulates a cost functional to turn the inverse problem into a constrained minimization problem according to least squares criterion, then the resulting constrained minimization problem is transformed into an unconstrained minimization problem by using a penalty function technique, and then the closed Fr chet derivatives of the Lagrange function with respect to the properties are derived based on the calculus of variations, finally, one can solve the resulting problem by using any gradient-based algorithm and the finite-difference time-domain method.

该方法首先以最小二乘准则构造目标函数，将逆问题表示为约束最小化问题；接着应用罚函数法转化为无约束最小化问题；然后基于变分计算导出闭式的拉格朗日函数关于特征参数的Fr chet导数；最后借助梯度算法和时域有限差分法迭代反演德拜模型参数。

Now what we finally came up with is that it is still the most robust and the best way to evaluate valvular stenosis by reporting a composite of peak transvalvular velocity, mean gradient and continuity equation valve area.

我们最终得到的结果是，跨瓣峰流速、平均梯度和瓣膜面积的复合指标仍然是最稳定和有效的评价瓣膜狭窄的方法。

Two gradient-based optimization schemes were investigated for continuous wave near infrared optical tomography.

研究了两种基于梯度的优化算法用于连续波近红外光断层成像的情况。

To read the contour map, people must understand the relationship between the terrain and the contour map, including the change of gradient and depth of space.

而阅读等高线图首重要先了解地形与等高线图的关系，其中包含坡形的变化及空间深度变化。

He studied their excrement for evidence of livestock hair.

他为家畜毛的证据研究他们的粪便。

Loneliness is not grounds for deportation, deportation of the people are not all lonely people.

寂寞也不是放逐的理由，放逐的人也并不都是孤独的人。