查询词典 serial correlation coefficient

Firstly, this paper investigated roundly the basic theory of the ambient vibration method, analyzed systematically the main methods of ambient vibration identification, and discussed their advantages and disadvantages. Then we established the finite element model of structural dynamics and test model and analyzed their mutual relation, improved MUSIC method and correlation function method in the harmonic identification, and gave the subspace method and correlation function method based on continuous model, which is multi-harmonic retrieve technique. And then, this paper also puts forward least-squares method to estimate directly structural physical and modal parameters; this approach replaced the derivative operator in the continuous time model with an equivalent approximation, and estimated the physical parameters of structures by the least-squares method. And then, we discussed the approximation methods of derivative and their convergence. Finally, this paper researched the modal parameters of a frame structure by the simulation and test. The results demonstrated that subspace method, correlation function method and the least-squares method are effective and stable respectively.

全面地研究环境振动识别方法的基本理论，系统地分析环境振动识别方法的主要方法，讨论它们的优点和不足；建立结(来源：6666AB44C论文网www.abclunwen.com)构动力学的有限元模型和试验模型，分析有限元模型与试验模型之间的相互关系；改进谐波识别中的MUSIC识别方法和相关函数识别方法，给出大型结构模态识别的连续型的子空间分解识别方法和相关函数识别方法，这个方法是多元谐波识别方法；提出直接识别结构的物理参数和模态参数的最小二乘方法，这个方法利用导数的近似值代替导数值，并运用最小二乘方法识别结构的物理参数，讨论导数近似值的选择方法，分析算法的收敛性；通过仿真计算和模型实验，研究高层框架结构的模态参数识别，验证子空间分解识别方法、相关函数识别方法和最小二乘识别方法的有效性，算法的稳定性；从理论和试验两个方面分析和研究噪声对识别精度的影响，影响识别精度的因素，以及部分模态成分的模态参数不能够被识别的原因。

The traits correlation analysis indicates: The table mould correlation of stem volume and height ,DBH ,crown width , has achieved the utmost point level of significance , The straightness with other traits correlation indicates that we can get some improvements when we select other traits.

发现它们的家系和单株遗传力大小关系：树高＞材积＞胸径＞冠幅＞高径比＞冠径比＞通直度；即树高生长相对其他性状具有较强的遗传力。

The work in the second year's project had resulted in two primary successes. One is to analyze the field data of wave and wind collected from August 1993 to May 1994, acquire the short time characteristic and the cross correlation between wind and wave in Mir-Tuor area. The other is to consult with Central Weather Bureau to get the waves data observing in Hsiao-Liu-Chiu and Dong-Chi-Yu. Cross correlation analysis was applied to analyze the relationship of the waves between Mir-Tuor and Hsiao-Liu-Chiu area, and between Mir-Tuor and Dong-Chi-Yu area. It indicates good cross correlation of waves between Mir-Tuor and Hsiao-Liu-Chiu area.

本年度为五年期计画之第二年子计画，主要工作成果有二：一是搜集82年8月至83年5月现场波浪及风速资料进行分析，得到弥陀地区短期波浪特性，以及风、浪之相关性；二是协调气象局提供小琉球与东吉岛波浪测站之同步观测资料，并且分别与弥陀波浪资料进行交叉相关分析，探讨弥陀、小琉球，与弥陀、东吉岛波浪之相关性。

Auto-focusing algorithm based on cross correlation ;2. By means of signal processing techniques such as the power spectrum function, the auto correlation function and cross correlation function, two kinds of ECG signals when AF does or does not happen were successively analyzed, showing the evident differences between them.

提出了一种简便有效的、由心电图曲线提取QRS -T复合波的新方法，从而获得P波或f波；利用功率谱、自相关、互相关等信号处理技术，对它进行了处理和分析，特别是，比较了未房颤时和发生房颤时的相关信息的显著差别。

Aiming at the limitation of this algorithm,the universal cut-and-try algorithm is put forward.The complexities of macroscopic traffic volume and GDP time series are calculated,respectively.The results show:the complexity of GDP has a positive correlation with the complexity of freight traffic volume;the influence of the complexity of GDP on the complexity of macroscopic traffic volume is long-term with lagged effect;and the correlation between GDP and macroscopic traffic volume has an uncertain relation with the correlation between their complexities.

通过计算宏观交通量与GDP时间序列的复杂度，得到简单结论：GDP复杂度与货运交通量复杂度具有较强的正相关关系；GDP复杂度对宏观交通量复杂度的影响是长期的，具有滞后效应；GDP与宏观交通量现象的相关程度与二者复杂度的相关程度没有必然的联系。

It has the negative correlation with Cu、nicotine,has positive correlation with Zn、Cl and has negative correlation with deoxidize sugar/N.

因此深入研究土壤肥力与烟叶化学成分的关系，了解土壤肥力对烟叶化学成分的影响，能为改善植烟土壤环境、提高烟叶质量和合理施肥提供一定的科学依据。

Results After the therapy, the sTfR and erythron increased significantly, but bone marrow iron deposits decreased progressively as HCT increased. The sTfR had a apositive correlation with RBC (r=0.632, P.01) and positive correlation with Hct (r=0.757, P.01) and positive correlation with E%(r=0.775, P.01). No correlations were observed among sTfR and other parameters.

结果 患者治疗后sTfR显著增高(P.01)；而骨髓外铁、铁粒幼细胞、SF均显著降低；红系增生较治疗前明显活跃(P.01)。sTfR与RBC呈正相关(r=0.632， P.01)；与Hct呈正相关(r=0.757， P.01)；与骨髓E%呈正相关(r=0.775， P.01)；与其他参数无相关性。

This dissertation investigates the construction of pseudo-random sequences (pseudo-random numbers) from elliptic curves and mainly analyzes their cryptographic properties by using exponential sums over rational points along elliptic curves. The main results are as follows:(1) The uniform distribution of the elliptic curve linear congruential generator is discussed and the lower bound of its nonlinear complexity is given.(2) Two large families of binary sequences are constructed from elliptic curves. The well distribution measure and the correlation measure of order k of the resulting sequences are studied. The results indicate that they are "good" binary sequences which give a positive answer to a conjecture proposed by Goubin et al.(3) A kind of binary sequences from an elliptic curve and its twisted curves over a prime field F_p. The length of the sequences is 4p. The "1" and "0" occur almost the same times. The linear complexity is at least one-fourth the period.(4) The exponential sums over rational points along elliptic curves over ring Z_ are estimated and are used to estimate the well distribution measure and the correlation measure of order k of a family of binary sequences from elliptic curves over ring Z_.(5) The correlation of the elliptic curve power number generator is given. It is proved that the sequences produced by the elliptic curve quadratic generator are asymptotically uniformly distributed.(6) The uniform distribution of the elliptic curve subset sum generator is considered.(7) We apply the linear feedback shift register over elliptic curves to produce sequences with long periods. The distribution and the linear complexity of the resulting sequences are also considered.

本文研究利用椭圆曲线构造的伪随机序列，主要利用有限域上椭圆曲线有理点群的指数和估计讨论椭圆曲线序列的密码性质——分布、相关性、线性复杂度等，得到如下主要结果：(1)系统讨论椭圆曲线-线性同余序列的一致分布性质，即该类序列是渐近一致分布的，并给出了它的非线性复杂度下界；(2)讨论两类由椭圆曲线构造的二元序列的"良性"分布与高阶相关性(correlation of order κ)，这两类序列具有"优"的密码性质，也正面回答了Goubin等提出的公开问题；(3)利用椭圆曲线及其挠曲线构造一类二元序列，其周期为4p(其中椭圆曲线定义在有限域F_p上)，0-1分布基本平衡，线性复杂度至少为周期的四分之一；(4)讨论了剩余类环Z_上的椭圆曲线的有理点的分布估计，并用于分析一类由剩余类环Z_上椭圆曲线构造的二元序列的伪随机性；(5)讨论椭圆曲线-幂生成器序列的相关性及椭圆曲线-二次生成器序列的一致分布；(6)讨论椭圆曲线-子集和序列的一致分布；(7)讨论椭圆曲线上的线性反馈移位寄存器序列的分布，线性复杂度等性质。

The results showed that the diameter and the volume of steamed bread had great positive correlation with the gluten content in wheat flour,that the ratio of diameter and height of steamed bread had great negative correlation with dough stability time ,and that the volume and height of steamed bread had good correlation with sedimentation value.

结果表明：小麦粉面筋含量与馒头的直径和体积高度相关；稳定时间与馒头的扩展比极显著负相关；沉降值与馒头的高度和体积相关性显著。

Positive correlation between Mg~# and P_2O_5 and negative correlation between P_2O_5 and FeO suggest that addition of P is not the key role for the separation of immiscible oxide melts. In contrast, negative correlation between Mg~# and Fe_2O_3/FeO ratios implies that the increasing of oxygen fugacity is very likely the main factor to induce immiscibility of oxide melt.

Mg#与P2O5的正相关以及P2O5与FeO含量的负相关，表明P不是导致氧化物熔体不混熔的主要原因；而Mg#与Fe2O3/FeO的负相关则说明，岩浆演化过程中氧逸度的升高可能是导致氧化物熔体不混熔的主要原因。

Now he worked in ajoint venture.

现在他在一家合资企业工作。

More troops in Afghanistan won't change any of the foregoing.

更多的在阿富汗的军队也不会改变之前的状况。