查询词典 gradient

Fermat's principle ; ray tracing ; spline function ; gradient method ; target method

费马原理；射线追踪；样条函数；梯度法；打靶法

Methods: Hepatic stellate cells were derived from normal rats by in situ perfusion, digestion and density gradient centrifugation with 108 g/L Nycodenz. The cells were stimulated by various concentrations of PDGF or MDA, and then treated with SAB.

采用原位灌注法消化大鼠肝脏，108g/L Nycodenz密度梯度离心，分离HSC，以MTT法观察细胞的增殖能力，免疫组化法检测血小板生长因子受体含量。

In the computation of initial value of QP,this paper proposes bpp,entropy and gradient as an estimate of the complexity of the image.

在初始QP值的计算上，提出了利用基于bpp、熵和梯度的图像复杂度对初始QP值进行估计的方法。

The simulation results show that the particle growth and Ostwald ripening in two liquid phase fields of the alloy can be realized by the adjusting the gradient coefficient and mobility ratio.

结果表明，合金体系中两液相区中的第二相颗粒生长和Ostwald熟化过程可以通过调节能量梯度系数和迁移率系数实现。

In order to stand out against a dark background, they are built up using a light gradient and inner shadow.

为了与背景区分开，他们使用了明亮的渐变和内部阴影。

They use a light gradient and inner shadow in order to stand out against a dark background.

它使用亮渐变和内部阴影使其与暗色的背景产生明显区隔。

3In four water conditions, three turfgrass water use efficiency with the increase of soil moisture gradient became smaller. Kentucky bluegrass, the highest water use efficiency.

3在4种水分条件下，三种草坪草的水分利用率随着水分梯度的增加逐渐变小，草地早熟禾的水分利用率最高。

We study on the controllability of parabolic systems with a nonlinear term involving the state and the gradient ,the null controllability property of a 1-d parabolic equation involving a fractional power of the Laplace operator ,null controllability of some systems of two parabolic equations with one control force ,and exact controllability of the parabolic system with bilinear control.

我们研究了含有状态和梯度的非线性的项抛物系统的能控性，含有拉普拉斯算子的分数阶的1-d抛物方程的零能控性，带有一个强控制的两个抛物方程的一些系统的零能控性和具有双线性控制抛物系统的精确能控性。

The second part is the controllability of parabolic equation .We study on the controllability of parabolic systems with a nonlinear term involving the state and the gradient ,the null-controllability property of a 1-d parabolic equation involving a fractional power of the Laplace operator ,null controllability of some systems of two parabolic equations with one control force ,and exact controllability of the parabolic system with bilinear control .

第二部分写的是，抛物方程的能控性，我们研究了含有状态和梯度的非线性的项抛物系统的能控性，含有拉普拉斯算子的分数阶的1-d抛物方程的零能控性，带有一个强控制的两个抛物方程的一些系统的零能控性和具有双线性控制抛物系统的精确能控性。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。