查询词典 cosine formula

We proposed and proved three theorems through which the theoretical formula of cosine transform spectrum of gravity anomalies of the point mass and the vertical rectangular-cylinder was deduced in order to obtain the general equation of gravity anomalies.

为获得重力异常余弦变换谱的通式，提出并证明了3个定理；利用它们推导了点质量和直立矩形柱体的重力异常余弦变换谱理论公式，同时给出了重力异常余弦变换谱通式。

We use vector space model to denote the groups interest and the returning documents into vector {(k1,V2),(k2,v2)...}, then we can calculate the similarity between them using the formula of cosine. The biggest former N pages will be pushed to group.

使用向量空间模型将用户的兴趣以及得到的文档表示成为向量形式{(k1，v2)，(k2，v2)…}，并使用夹角余弦公式计算两者之间的相似度，将相似度最大的前N篇文档推送给用户。

We proposed and proved three theorems through which the theoretical formula of cosine transform spectrum of gravity anomalies of the point mass and the vertical rectangularcylinder was deduced in order to obtain the general equation of gravity anomalies.

为获得重力异常余弦变换谱的通式，提出并证明了3个定理；利用它们推导了点质量和直立矩形柱体的重力异常余弦变换谱理论公式，同时给出了重力异常余弦变换谱通式。

The main contribution of this thesis is that we propose a collaborative filtering recommendation algorithm based on double clustering. This approach first respectively clusters resources and users by the users rating on items, then makes a collaborative filtering recommendation based on the clustering result. The new algorithm can shorten on-line recommendation time. Then, we apply the classical formula of cosine correlation to double clustering algorithm, leaving out the standardization operation. In the end, we implement an educational resource recommender system according to the need of the actual project and the result is positive.

本文的主要意义在于，首先运用聚类技术对用户和资源分别进行聚类，然后利用聚类结果进行协同过滤推荐，由于聚类部分离线周期进行，大大缩短了在线的推荐时间；然后将经典的余弦相似性计算公式运用到双重聚类算法中，省去规范化处理操作，减少运算量；最后结合实际的需要，实现一个资源推荐系统。

Based on the assumption that the heating floor radiation agrees with Lambert's cosine law and the outdoor human body could be equivalent to a "human cylinder", the mathematical model and formula to describe the thermal radiation from the floor to human body are established.

在基本假设和"人体柱"模型的基础上，建立采暖地板对室内人体热辐射的理论计算模型。利用该理论模型，对矩形等温地板的采暖辐射特性进行计算分析。

Via the stochastic averaging method, the four-dimensional system is reduced to a two-dimensional one. Through the logarithmic polar transformation , and then Girsanov theorem and Feynmann-Kac formula, the backword differential operator is then obtained. By expanding the eigenfunctions as a Fourier cosine series, the approximate analytic expansion of the moment Lyapunov exponent is then obtained.

首先在经典二元机翼颤振方程加入随机激励，通过随机平均法，Girsanov定理和Feynmann-Kac公式得到关于矩Lyapunov指数的特征值问题，其次采用Fourier余弦级数对特征函数进行正交展开得到系统矩Lyapunov指数的近似解析式。

Sine Cosine】【cotangent side: angle: side: angle: type of half-angle formula.

边： 角：边：角：边：角：式中。

The launching direction and journey length of energy bind in calcula ting the radiation heat transferring in tubular heater by method of Monte-Carlo are analysed. According to the directioncosine formula in hexahedron tubular hea ter,the direction cosine of energy bind in inclined and symmetry tubular heater is stuided.

分析了用蒙特卡罗法计算加热炉辐射传热时能束的发射方向和行程长度，根据六面体加热炉中能束的方向余弦公式，对斜顶对称加热炉中发射能束的方向余弦进行了研究，得到了其修正公式，对斜顶壁面相交坐标进行了修正。

By the procedure, we first use the cosine values of the angle between view vector and normal vector on each vertex as the texture coordinates, through calculation of the dot product of the two vectors. The derivative of radial curvature on the model surface is used as the second pass texture mapping coordinates, by a calculation using Euler formula.

该方法首先通过模型顶点的视线向量和法线向量的点乘积计算其夹角的余弦值，作为第一步的纹理坐标进行映射；再通过欧拉公式计算径向曲率及其方向导数值，作为第二步映射的纹理坐标。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。