查询词典 approximate differentiability

What is the approximate PV of an asset that pays $1 a year in perpetuity beginning in year 8?

一项在8年开始一年支付$1到永久的资产的 PV 的近似值是什么？

The new method is based on the approximate expression of phase angle in terms of ray angle.

本文基于以射线角近似表示相角的思想，提出了一种弱各向异性条件下，群速度射线角近似表示的新方法。

The ratio of Bcl-2 vs Bax was approximate 6.0 in epilepsy control group, 0.7 in phenobarbital sodium group, 1.0 in other three groups.

正常对照组Bcl-2/Bax的值约为6.0；致痫对照组约为0.7；其余3组均约为1.0。

By constructing the piecewise linear function from samples, it is able to approximate the measured metric more precisely. Compared with current popular sampling algorithms, FASM algorithm can provide more precise estimation of metric under the same samples. In the condition of retaining the same approximation errors, our adaptive sampling methodology only requires fewer samples, which will save sampling costs considerably during sampling process.

与当前常用的抽样算法相比，在采集相同的样本数量情况下，本文的拟合模型对指标进行的估计更准确、稳定；而在保持相同的拟合误差时，自适应抽样算法则可显著减少所需采集的样本数量，节约数据采集过程的代价。

The paper presents an efficient approximate algorithm for Convex Hull of very large planar point set.

提出了一种计算海量平面点集凸壳的快速近似算法——点集坐标旋转法。

To some extent, using a plane curve to approximate an offset curve of the plane Bézier curve is restricted.

摘要用一条平面曲线来逼近平面Bézier曲线的等距曲线具有一定的局限性。

Meanwhile, we also provide methods for computing the weighted polar decomposition, and study error bounds for the approximate generalized positive semidefinite polar factor and perturbation bounds for weighted polar decomposition in various norms.

针对这个新的矩阵分解，我们证明了其唯一性定理，给出了其唯一性条件，讨论了其极因子的最佳逼近性质；同时，我们还探讨了矩阵加权极分解的计算问题，研究了由迭代算法引起的极因子的误差界，极因子在各种范数下的各种形式的扰动界等。

This paper describes an approximate solution, in polar coordinates, to the plane problem of foundation consolidation (suitable for certain boundary conditions), and also provides graphs for calculating the distribution of pore water pressure at any time underneath the strip footing with uniform load.

本文叙述了地基渗透固結平面課題的极坐标近似解法，并提出了条形均布荷重下任何时刻地基內孔隙水压力分布的計算图表，可供在复杂荷重及施荷速率条件下計算孔隙水压力之用。

Thirdly, the principal curve and polygonal line algorithm are introduced, and an implementation of polygonal line algorithm based on Quasi-Newton numerical optimization is illustrated. The simulation results show that when this algorithm isused in the detection of curvilinear defects on wafer map, it can converge fast, compute accurately and meet the demand of application of defects pattern analysis, and with the number of line segment increasing, the polygonal line will approximate to the Kegl principal curve.

研究了主曲线、多边形线算法，提出用多边形算法识别弧状缺陷想法，讨论了用拟牛顿法实现该算法的解决方案，针对硅片缺点模式分析中常出现的弧状缺陷，采用该算法进行检测分析，实验结果表明这种算法快速准确，当线段个数或最小距离平方期望值达到一定门限值后，多边形线就已经能够描述弧状缺点集的形状，随着线段个数增加，最小距离平方期望值还在不断下降，最终会收敛到Kegl主曲线。

For the robust adaptive control issues of linear time-varying systems, a new polynomial approximation scheme is applied to approximate the time-varying parameters of the systems.

5对于线性时变系统的鲁棒自适应控制问题，本文提出了一种新的多项式逼近方案用以逼近系统的时变叁数。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。