查询词典 falling gradient

The derivation course and the discrete scheme of the first model-Perona-Malik model have been expatiated on emphasis. One item of the P-M model is omitted in the P-M's discrete scheme, and the gradient magnitude is replaced by the absolute value of difference quotient.

Perona-Malik给出的离散格式是一种显式离散格式，这一格式的连续形式省略了原模型中的一项，且用差商的绝对值代替了梯度模。

During the process of learning, a new kind of empirical risk function is proposed which is differentiable and can be minimized by gradient descent strategy.

对于参数的学习，提出了一种适用于分类器的可微经验风险函数，该函数能够有效地利用梯度下降法进行最小化。

The paper analyzes the gradient sharpening algorithm based on differential coefficient, and makes it realized by VC++.

本文介绍了基于微分的梯度锐化算法原理，并通过VC++进行编程实现。

In the section of physical models, the paper presents a three-dimensional model called nine-equational model that treats the object as two phases and two components. The nine-equational model includesκ－εturbulence model and diffusibility model owing to the gradient of mass concentration.

在物理模型部分，本文对钢安全壳内部大空间提出了三维、两相、两组份、对气相引入κ－ε湍流计算模型和考虑由于气体浓度差引起的扩散效应的九方程模型。

Under the same pressure gradient, the seepage velocity of leaching solution well increases with the intensity of positive electric field, and decreases with the negative electric field. The seepage diffusibility of leaching solution and its wetting ability to fractured rock mass can be enhanced or weakened by the electric field.

在同等压力梯度下，受地电场作用的裂隙岩块中溶浸液渗流速度随正向电场强度增加明显增大，随反向电场强度增加明显减小；地电场能够强化或者减弱裂隙岩块中溶浸液的渗流扩散能力和溶浸液对岩块的润湿作用。

It can be observed that the diffusive situation is much more significant in the gradient material with large difference of content than that in the material with small difference of content.

梯度铁电相变材料的概念同样可以在其它材料系统中运用，并结合其它物理性能的优化获得高品质的功能材料。

As a whole, the horizontal and vertical temperature gradient is relative small along with the relative large diffusivity.

这说明大洋环流对垂直混合强度的变化是相当敏感的。

Considering that the temperature gradient through thickness is much higher than that through width and length of plate, in this model, the governing equation of heat transfer was simplified as a one dimensional differential equation, and the series function solution for temperature is established in Lagrangian coordinate setting.

在该模型中，考虑到轧件厚度方向的温度梯度远大于沿宽度和长度方向的温度梯度，因而将热传导方程简化为一维微分方程，基于拉格朗日坐标建立了温度场的级数解法。

It was suggested that transport of dipeptide in small intestinal BBMV of piglets was independent on concentration gradient of Na+.

研究提示，Gly-Pro在仔猪小肠BBMV体系中的转运与Na+不存在依赖性的关系。

The analysis of theory and experiments shows that dark photovoltaic solitons depend on the direction of propagation,orientation of the intensity gradient,with respect to the crystalline axes of the medium.

实验和理论分析表明，暗光伏孤子的形成与光的传输方向，强度梯度与晶体c轴夹角有关；只有在一定的条件下，才能得到稳态的部分空间非相干暗光伏孤子。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。