查询词典 weighting function

We can decrease the IL by increasing the finger pairs of receiving interdigital transducers and by the weighting of receiving IDT.

我们通过增加接收IDT的指对数和对其进行加权变换来降低插入损耗。

To analyze the different locations of the intersection of a ray and a polygon quickly, a scheme of calculating the number for the intersection point is established based on the structure query language and the method of weighting each side of the polygon.

采用对多边形各边赋权值的方法，分析射线与多边形相交的不同情况，给出了使用结构化查询语言实现交点个数求解的快速解决方案。

The objective of this paper is to evaluate various spatial interpolation methods, including ordinary Kriging, simple Kriging, lognormal Kriging, universal Kriging, disjunctive Kriging and inverse distance weighting interpolation for estimating soil surface Hg content with lognormal distribution, the linear and second-order polynomial trend, and t...

以分布类型为对数正态分布，同时具有一阶和二阶趋势效应的土壤重金属Hg为例，分别应用普通克立格法，简单克立格法，对数正态克立格法，泛克立格法，析取克立格法和距离反比权重法等 6种内插方法对其进行了估值，综合比较了各种内插方法的预测误差、统计特征值及插值结果分布图。

In the ***, all types and fundamental principles of Radon transform are summarized systematacially. This *** starts from the general linear Radon transform, and then researches how to use the damped least square method to find the solution of the forward transform. However, the least squares smoothing effect will lead to a certain degree of trails in the data of Radon domain, which led to the application\'s limitations. After that the implementation in Radon domain and relative merits of linear Radon transform, parabolic Radon transform and polynomial Radon transform which have time invariance are introduced, the conjugate gradient method that can solve numerical solution is also given. And then the high resolution Randon transform is discussed, it introduces the regularization theory and Bayes principle into inversion, which successfully remove the negative affect caused by discrete Radon transform. Finally, we introduce the optimal weighting similar coefficient Radon transform, which adapt to the time variant quality of hyperbolic Radon transform.

本文系统总结了Radon变换的各种类型及其基本原理，从τ- p变换(即一般线性Radon变换)出发，研究利用阻尼最小二乘平方法求解其正变换，但是最小平方法的平滑作用会导致Radon域数据存在一定程度的拖尾效应，给这种方法的应用带来了很大的局限性；然后先容了具有时不变性的线性、抛物和多项式Radon变换在频率域的实现及其优缺点，给出了求解其数值解的共轭梯度算法；接着讨论了高分辨率Radon变换，它把正则化思想和贝叶斯原理引进到了反演中，很好的克服了离散Radon变换产生的截断效应对结果的不利影响；最后先容了适应双曲Radon变换时变性质的高分辨率最优相似系数加权Radon变换。

The problem of determination to weighting coefficient is a key and difficulty for combination forecast.

权系数的确定问题是组合预测方法中的关键和难点，提出了一种基于粗糙集理论的权系数确定方法。

In 2005, the weighting sensor system and power source were improved and host computer and data colleting software of Lysimeter were updated, which were installed in the Ansai Research Station of CAS for studying filed water evaporation and transpiration transformation.

它对推动我国实验水文学的发展具有重要作用，并为相关领域的科学研究提供了一种较先进的技术设备和实验环境。

The rifle could be disassembled and carried in two man-portable packs, each weighting about 12 - 15 kg.

该步枪可以拆卸，并有两种人进行便携式包，各约12 - 15公斤重。

We wanted to see how far we could take the idea of creating more space with less material, filling 3000 cubic meters, the equivalent of 8 million cola cans, with a minimal surface of 300 square meters weighting only 40 kg.

我们希望看到多远，我们可以采取的想法，创造更多的空间较少的材料，填补三千立方米，相当于800万罐可乐，以最小的表面三零零平方米加权只有40公斤。

Multiple the Point in with the Weighting Factor and record the result in the column.

将在位于B点成倍递增的数据与权重因数陆续的相乘的结果记录到如下的表格中。

Methods:48 male SD rats,weighting 250-300 g,were divided into 4 groups,each group had 12 rats,they are normal control group,ischemic/reperfusion group,ischemic preconditioning group(Ⅲ group,Murry method) and adnine sulphate preconditioning group.

实验采用体重为250-300 g雄性SD大鼠48只，分4组，每组12只，即正常对照组；缺血再灌组；经典缺血预处理组；硫酸腺嘌呤预处理组。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样