查询词典 piecewise linear function

In order to probe into classification and recognition method for planar figures in effect, a class of complete orthogonal piecewise k -degree polynomials, so-called U-system, is introduced.

为了探索有效的图形分类与识别的新方法，引进一类正交完备的分段 k 次多项式系统。U-系统是一类属于 L 2[0，1]的正交完备分段k次多项式系统。

In order to probe into the properties of frequency spectrum for a group of parametric curves, a class of orthogonal complete piecewise k-degree polynomials in L 2[0,1],called U-system, is introduced.

为了探索参数曲线图组的频谱性质，引进一类属于L2[0，1]的正交完备分片k次多项式系统。

It is shown that the pressure distribution is a piecewise parabolic curve, and the pressure gradient can be discontinuous at the border of the slip and no-slip regions.

结果显示压力分布为分段光滑的抛物线，在滑移／非滑移边界，存在不连续的压力梯度。

First,a nonover-lapping domain decomposition algorithm is presented fora class of piecewise smooth systems of parabolic type.

首先，给出了一类抛物型分片光滑动力系统的非重叠区域分解法。

In chapter 4, the case of risk asset allocation with allowed sell and restricted short sell is discussed, especially in case of restricted short sell, the efficient frontier piecewise partition is determined by using duality theory in parametric quadratic programming. And the concept of tripartition is introduced, economic meaning stated and algorithm to determine efficient frontier proposed.

特别对限制卖空的证券组合，应用参数二次规划对偶性理论解决了有效边缘曲线分片划分的问题，并引入了三元分割的概念，解释其经济意义，同时给出确定有效边缘的算法；对于协方差矩阵是奇异的情况，利用矩阵分块技术，得到不同情形下有效边缘的解析表达式，并用直观的几何图形描述，克服了M-V模型在实证分析中遇到的困难。

This surface is a piecewise bi-cubic rational parametric polynomial surface.

构造的曲面是分片双三次有理参数多项式曲面。

Bifurcation and chaos of periodic motion s of a single-degree-of-freedom system with piecewise-linearity is studied.

研究了一类单自由度分段线性系统周期运动的分岔和混沌现象。

In this paper, the existence of the periodic solution for two classes of piecewise symmetric systems is studied, and the certain sufficient conditions for the existence of the corresponding systems are obtained.

本文研究了两类分段对称系统周期解的存在性，得到了系统相应的周期解存在的充分条件。

As an application, the existence of the periodic solution for a class of delay differential equations with piecewise sysmmetric condition is proved.

作为应用，证明了一类具有分段对称性的时滞微分方程的周期解的存在性，推广了现有的相关结果。

This model adapts the prior information of piecewise continuity of image to construct a nonlinear diffusion model,which is used to smooth an enlarged image by nearest interpolation to reduce the blocky effect caused by enlargement,simultaneity,and interpolation condition is added into the iterated process to avoid a too smooth image.

新模型利用图像为分片连续的二维曲面的先验信息，采用非线性扩散方程对基于最近邻方法放大后的图像进行光滑以消除因放大引起的"块状"效应，同时在迭代过程中加入插值条件使处理后的图像能较好的保留边缘，由此构造出基于偏微分方程的图像分辨率增强模型和相应的迭代算法，使图像的分辨率增强到亚像元级。

My father is over 60 years old, and he lifts weights every day.

我爸爸六十多岁了，他每天都练习举重。

Then in a serious tone she declared:"It doesn't pay, dear boy, to look like a ninny with one's wife the first night."

两眼湿润了，她把身子蜷得很小，这样似乎可以更好地闻闻自己。