尺度系数

In this paper the viscous flows around a mathematical SWATH in full scale are simulated based on the computational fluid dynamics commercial software FLUENT. The numerical results of total pressure, wall shear stress and the corresponding viscous resistance coefficient at different velocity are obtained. The computational viscous resistance coefficients are compared with the estimated ones using empirical formula. The validity of the software to predict the three dimensional viscous flows and viscous resi...

利用计算流体力学商业软件 FLUENT对一实尺度小水线面双体船数学船型的粘性绕流进行了数值模拟，得到了不同航速下的船体表面总压力、表面剪切应力分布和相应的粘性阻力系数；将各航速下的粘性阻力计算结果和经验公式估算结果作了比较，验证了 FLUENT用于计算小水线面双体船三维粘性流和粘性阻力的有效性。

Employing scattering modes of Kirchhoff approximation and two-scale randomly rough surface in active remoter sensing and physical definition about emissivity in passive remote sensing , the relations of between backscattering cross , effective emissivity and polarization , incident angle , wind speed and whitecap-covered percentage are calculated and show the degree of whitecap affect microwave remote sensing.

在主动遥感方面采用KA模式和双尺度随机粗糙面散射理论模式，在被动遥感方面利用发射率的定义得到有效热发射比，在本文的模型下计算了热发射比以及极化状态的后向散射系数与极化方式、入射角、风速、白冠覆盖率等各参量间的关系，讨论了白冠层的存在对微波遥感模式的影响程度。

This method can detect the exact glottal closure time by extracting the local maxima in the weighted sum of wavelet transform coefficients in three scales.

通过提取三个尺度空间小波变换系数加权和的局部极值点，该算法能够获得突变点的准确位置。

A translation-invariant extension of multiwavelet transform called stationary multiwavelet transform was proposed,which yields an overcomplete signal representation,and consequently incorporates the advantages of multiwavelet transform and translation-invariant property.

综合了多小波分析和平移不变性质的优势，将多小波分析扩展到静态多小波的范畴，提出了一种基于静态多小波变换的图像融合方法。通过对源图像进行SMWT，根据变换系数的尺度内多子带联合窗口特性，实现多源图像的融合。

The available methods of Seebeck coefficient of micro-scale material with MEMS structure were reviewed.

综述了微观尺度下利用MEMS结构测量硅材料塞贝克系数的已有工作。

In this study, we use multidimensional scaling technique to visualize time-varying returns between risky asset behaviors. From this market map, we can investigate adequacies of asset allocation and explore the risk structure of the markets more.

一般是采用相关系数矩阵观察资产间的相关性大小，利用多元尺度法所形成的资产集合构形图可帮助我们直接以视觉化的角度一次性的观察所有资产间的关系。

But the algorithm involves big matrix computation except the scaling coefficient vector and the wavelet coefficient vector at the coarsest scale.

不足之处是较大尺度的小波系数较长，存在较高维数的向量和矩阵运算，计算量大。

The character of this new method is that the mechanism of the GA is not changed but the search space and the coefficient of the adjustment of th e optimization parameter are reduced continually, which leads to generation evolution to the next generation in order to produce better optimization indivi duals so as to improve the performance of the GA and get over the disadvantage o f the GA.

提出一种新的混合算法--变尺度混沌遗传算法，该算法把遗传算法和混沌算法混合在一起，在不改变GA搜索机制的同时，根据搜索进程，不断缩小优化变量的搜索空间及调节系数，引导种群进行新一轮进化，从而产生更优的最优个体，改善了GA的性能，有效地克服了GA存在的问题。

The effect of main dimensions and form coefficients on the calm water resistance of round bottom hull is analysed on the basis of published test results as well as on the design experience of dozens of home-built crafts.

本文根据国内外圆舭快艇系列试验资料和我国的设计经验，分析了圆舭快艇主尺度和系数对阻力的影响。

Based onthe breakthrough curve of the mixture of CO_2 and CH4, the separation coefficient wascalculated as the rule of selecting adsorbent.

通过CH_4/CO_2混合气在两种活性炭和一种硅胶上的穿透曲线，计算出分离系数作为选择吸附剂的尺度。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。