Binary Alloy Blending Method: a Way to Prepare Nd-Fe-B Magnets with Low Temperature Coefficient 制取低温度系数Nd-Fe-B磁体的混合合金法工艺
The binary interaction coefficient in SRK and PR equations at test temperature and the relational expression between the binary interaction coefficient and the temperature are incidenced with the test data. 并用试验数据关联了试验温度下SRK方程和PR方程中的二元交互作用系数及二元交互作用系数与温度之间的关系式;
The nonlinear response in the bistable system with a random binary signal by adding the variable amount of noise is studied, and the input-output cross-correlation coefficient is measured. 研究了噪声和随机二进制信号同时激励双稳系统时的输出响应,并测量了输入输出互相关系数。
A method of recognition of binary phase coded signals based on the wavelet transform and issues of scale factor setting are discussed. The recognition rate would be increased via reasonably setting the scale factor. Through statistic of the wavelet transform coefficient improves the reliability of recognition result. 研究了一种利用小波变换识别二相编码信号的方法,重点讨论了小波变换的尺度参数设置问题,通过对尺度参数的合理设置提高了识别效率,对小波变换系数的统计提高了识别结果的可靠性。
The result of binary regression analysis showed that both multiple regression coefficient and partial regression coefficient attained the levels of highly significance. 二元回归相关分析进一步表明:复相关系数和偏相关系数均达极显著水平。
Though many evaluation methods concerned were put forward, they were all based on unbounded domain and restricted only to the evaluation of binary incidence coefficient. 虽然人们进行了长期的努力和探索,得出了一些计算这些系数的数值计算方法,但都是建立在无界区域基础上的。
Based on the original group contribution method for prediction of binary liquid molecular diffusion coefficient, a modified method was developed. 一种改进的用基团贡献原理计算二元体系液相分子扩散系数的方法,可用于大部分非理想液相体系。
Finally, the tested value is compared with the calculated value by use of incidenced binary interaction coefficient. 最后利用关联到的二元交互作用系数对计算值与试验值进行了比较。
A modified group contribution method for prediction of binary liquid molecular diffusion coefficient 用改进的基团贡献法计算二元体系液相分子扩散系数
New formulae for calculating from simple eutectic binary phase diagram are presented, by introducing a parameter θ and leading to a new expression of activity coefficient with temperature. 借助于引入θ参数所得到的组元的活度系数与温度间的新关系式,导出了由二元简单共晶的相图计算组元活度的修正式。
Measurements of the surface tension of the Pb-Sb binary melts were made by the sessile drop method. All the temperature coefficient of their surface tension was obtained in a negative quantity. 用卧滴法测定了液态Pb,Sb纯金属和Pb-Sb合金熔体的表面张力,其表面张力的温度系数均为负值。
Wavelet packet is decomposed with binary tree, along with the increase of decomposition layers, transforming coefficient is reduced gradually. It is not located in the same threshold the corresponding threshold values should be reduced. 小波包分解是通过逐层二叉树不断分解,随着分解层数的增大,小波包变换系数应该是逐渐减小的,对应的阈值也应该是减小的,而不是在同一阈值下。
The wavelet coefficient of the original image is got through wavelet transform, and the low frequency coefficient is seen as a sub-image. Then the binary watermark image is permuted, the watermark is embedded into the coefficient which got from the DCT of the sub-image. 通过小波变换得到载体图像的高频和低频系数,将低频系数作为一个子图像;再将二值水印图像置乱,在子图像的离散余弦变换得到的系数中嵌入水印。
Of the road freight transport trends and the development of modern logistics in Chengde City, the general situation, market demand, based on available data using binary linear regression, exponential smoothing method, elastic coefficient and other mathematical methods to predict the key traffic indicators. 研究了公路货运发展趋势和承德市发展现代物流总体形势、市场需求,根据现有数据采用二元线形回归法、指数平滑法、弹性系数法等数学方法对主要运量指标进行了预测。
According to the characteristics of the residual data from the predicted image coded, we combines with Exp-Golomb code table to establish a new code table of binary residual data. This code table can solve the binary redundancy problem of larger residual coefficient. 针对预测编码后图像残差数据特点,结合Exp-Golomb码表建立了一个二值化残差数据的码表,该码表可以有效解决较大残差系数的二值化冗余问题。
Through Binary bit-plane decomposition we can get 10 matrixes which have the same size of low frequency coefficient matrix. 如果将低频小波系数矩阵进行二进制位平面分解,则可以得到10个与低频系数矩阵大小相等的二值矩阵。
Specifically, in binary imbalanced learning, we propose to adopt the Spearman correlation coefficient to measure the redundancy between features, and then combine this redundancy term with the AUC term that measures the relevance between a feature and the class label. 在二类不平衡分类问题中,本文提出使用斯皮尔曼等级相关系数来衡量特征之间的冗余性,并把这个冗余性度量和利用AUC本身作为相关性度量的两项结合起来。
To the typical critical sliding surface, the stability factors are calculated for different rain intensity and rain time, making binary linear regression and getting equation between stability factor and rain intensity and rain time, then accounting the coefficient of rainfall capacity. 对典型计算滑动面计算不同降雨强度和持雨时间组合下的稳定性,对其组合作二元线性回归分析得出稳定系数与降雨量、持雨时间的关系式,计算得到稳定性降雨容量系数。
The liquid lead was recommended as cathode to remove trace impurity Mg2+ according to the binary alloy phase diagram and magnesium activity coefficient calculation. 结合二元合金相图及镁合金中组元镁的活度系数计算结果,提出采用液态金属Pb作为阴极去除微量杂质Mg。
Result enunciation that an industry increment value specific weight in GDP is influence Shandong province city country residents the income margin show most of factor, secondly is a GDP growth rate and binary structure coefficient. 4. 结果表明,第一产业增加值在GDP的比重是影响山东省城乡居民收入差距最显著的因素,其次是GDP增长率和二元结构系数。