查询词典 approximations

Finally, some properties of rough set in quotient group are given and proved. The fourth chapter is the Roughness of Ring based on Ideal, a rough subring with respect to a ideal of a ring is discussed, and some properties of the lower and the upper approximations in a ring are studied.

最后，在商群中讨论了粗糙集的一些性质，并给出这些结论的严格证明；第四章是基于理想的环的粗糙，对一个环的子集关于理想的粗糙近似子环作了探讨，并研究了一个环的上、下近似的性质。

By using techniques from robust statistics, we obtain the approximations of the underlying surfaces. This leads to a conceptually good local patch with precise geometry properties, and as a result, the influence of noises is reduced. In addition, we also present a diffusion method to smooth the geometry properties, including principle curvatures and Frenet frame. The method ensures that the surfaces are smooth in the curvature space, and maintain the details, features and optimize the normals. The results show that, even in a high level noise situation, our algorithm can remove noise effectively, and at the same time keep the details of the model.

与传统的双边滤波去噪算法不同，该算法通过引入鲁棒统计理论获得模型表面较为准确的几何属性；进而在曲率空间中对包含主曲率和Frenet标架的表面几何属性进行各向异性的滤波，既有利于保持模型的细节，又能保证曲面的光滑性；与此同时，优化各个顶点的法向；最后在优化后的几何属性引导下，在几何空间中进行高阶双边滤波去噪。

On the basis of Nagumo′s existence theorem for the singular case, we obtain the existence of solutions of singular equations satisfying nonlinear boundary value conditions and periodic boundary value conditions by means of approximations.

在Nagumo型存在定理的基础上，我们应用逼近的方法给出了奇性方程满足非线性边值条件和周期边值条件的解的存在性。

In addition, for any f ∈ H〓 or H〓, the Sobolev space, the approximations of f , f′ and f are disscussed by means of the obtained sampling theorem.

另外，也给出Sobolev空间H〓和H〓中的函数、一阶导函数及二阶导函数的逼近表示。

The results on the related mixed approximations and techniques developed in this work are also applicable to many other problems with spherical geometry.

本文得到的一些理论结果和所采用的技巧，同样适用于其它球形区域问题的数值解。

Under rational approximations, the symmetry and resolution properties are analyzed in detail and compared to those of the traditional processing.

论文第六章推导给出了双差拍处理下的模糊函数，详细分析了其对称特性和分辨率特点，并与传统差拍处理下的模糊函数特性进行了比较。

The characteristics of these four approximations are based on combinations of a Taylor's series and a Chebyshev approximation in the pass and stopbands.

的特点，这四个近似是基于组合的泰勒系列和切比雪夫逼近的通行证及stopbands 。

In this paper,the problem of the rate of uniform convergence in the normal approximations of the Von Mises Statistics will be considered.

本文讨论了Von Mises统计量向正态逼近的一致收敛速度问题，在核函数仅满足二阶矩条件下，给出了上述收敛速度的上、下界，所得结果改进了 [2 ]中相应结论

It was also found that the estimation of incident energy associated with energy transfer to the surface adatom could be employed in guidance of the experiments, although some approximations were introduced in the proposed model.

尽管在计算模拟中引入了一些近似，公式中也没有考虑离子、原子流比值和温度效应，但是，离子向表面增原子能量转移的近似计算结果，仍具有指导实验的预言性和适用性。

Problems of accurately computing algebraically exact solutions in the presence of rounding errors and of computing discrete approximations of solutions which are defined on the continuum.

在面对由连续性定义的误差与解的离散近似计算时代数学上的精确求解问题。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。