查询词典 Newton

This approach uses the geometric features and radiation features of the road, according to the small amount seed points given by the user, each point in the road centerline can be gotten. Then an adaptive gray template is used to adjust each point in the road centerline. Finally, least square method and Newton iteration method are adapted to each point in the road centerline to fit a polygonal line.

该方法利用道路地物的几何特征和辐射特征，根据用户提供的少量道路种子点，利用自适应灰度模板对道路中心线上的每个点进行调整，最后采用最小二乘算法和牛顿迭代法对调整后的道路中心线上的每个点进行拟合，以此获得趋近于道路中心线的最佳折线。

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。

To quote Isaac Newton, that great polymath of the 17th century, writing in a letter to another great scientist, Robert Hooke, in 1676:"If I have seen further it is only by standing on the shoulders of giants."

谈到"研究"，虽然英文中的research一词（源于法语recherche）往往给人以宏大意向，但究其本源，仅仅是"再一次探究"的意思。17世纪的博学家艾萨克·牛顿在1676年的一封信中对另一位伟大的科学家罗伯特·胡克所言："如果我比别人看得更远，那是因为我站在巨人的肩上"。

The voltage and the sensitivity of voltage to system operation parameters are calculated by Newton power flow approach; the various higher order derivatives of voltage and voltage sensitivity to line openbreak parameter can be obtained by using the convergent correction equation of power flow and the equation of calculating sensitivity for the N power system. Finally, the voltage and sensitivity of N-1 power system can he calculated by correcting the voltage and sensitivity of N power system by Taylor series expansion.

通过牛顿潮流计算出N网络的各节点电压及其对系统运行参数的灵敏度；利用已收敛的潮流修正方程式和N网络灵敏度计算方程式分别对线路开断参数多阶求导，从而计算出电压和灵敏度对此线路开断参数的多阶导数值；根据泰勒级数展开式修正N网络的电压和灵敏度值，得到N-1网络的电压和灵敏度值。

This text has considered the impracticable circuit is as collecting the wind electric field equivalence model behind the road to the electric wire, change, take the place of to including wind electric field node model go on, punish according to PQ at the modest trend foundation that calculate of law in Newton - pressgang.

本文考虑了架空线路作为集电线路后的风电场等值模型，在牛顿-拉夫逊法的潮流计算的基础上对含风电场的节点按照PQ迭代模型进行处理。

Charge example in whom five node form, 4 node adopt Newton - pressgang modest law go on trend calculate, another node to contain wind-driven generator adopt PQ change, take the place of model go on trend calculate, change, take the place of with ordinary trend computing method first, judge revision wind electrical machinery nodal voltage error go on for the second time changing and taking the place of in establishing range.

在五个节点构成的算例中，4个节点采用牛顿-拉夫逊法进行潮流计算，另外一个含有风力发电机的节点采用PQ迭代模型进行潮流计算，先用普通潮流计算法迭代，后经过修正风电机节点电压判定误差是否在设定范围内进行第二次迭代。

We owed the discovery of the prismatic spectrum to Isaac Newton.

我们应把棱镜光谱的发现归功于牛顿。

We owe the discovery of prismatic spectrum to Isaac Newton.

棱镜光谱的发现得归功于艾萨克·牛顿。

First,we proposes the acceleration of Monte Carlo EM Algorithm,which is based on Monte Carlo EM Algorithm and Newton-Raphson algorithm,to improve the convergence rate;Second,the it is shown that the accelerated EM algorithm we proposed has quadratic convergence rate in a neighborhood of the posterior mode;Finally,its excellent performance in convergence rate is illustrated by a classical example.

受Monte Carlo EM算法与EM加速算法启发，本文构造了一种新的EM算法，称为Monte Carlo EM加速算法；证明了该算法在似然函数/后验分布的众数的附近确实具有二次收敛速度，改进了Monte Carlo EM算法的收敛速度；并通过一个数值例子的计算结果说明了该算法的优良性，它兼具实现简单及收敛速度快的特点。

A damped Newton type method was presented based on it.Global and local superlinear/quadratic convergence results were obtained under mild conditions, and the finite termination property was also shown for the linear BVIs.

基于此给出了求解箱约束变分不等式的一种阻尼牛顿算法，在较弱的条件下，证明了算法的全局收敛性和局部超线性收敛率，以及对线性箱约束变分不等式的有限步收敛性。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。