查询词典 iteration method

The successive χ2 test begins with the determinations of gametic or zygotic selection types, followed by the estimation of recombination fractions between two markers with the Newton-Raphson iteration method.

对取自MAPMAKER软件小鼠F2群体(含333个体)的5个RFLP连锁标记数据作了共显性分子标记偏分离的分析。

Using three dimensional inharmonic element and the modified subspace iteration scheme for calculating dynamic characteristic of the shear wall, and using plane stress element and Newmark and Newton-Raphson method for calculation of seismic behaviors of shear wall under earthquake loads.

采用三维非协调实体元及改进子空间迭代方法计算剪力墙的特征对；采用平面应力单元并利用Newmark法与Newton-Raphson法相结合的方法计算剪力墙在地震荷载下的地震反应，并用FORTRAN77（F90）语言编制了相应的计算程序和前后处理程序，经计算验证程序是有效的。

The existence and uniquene ss of solutions to the problem were obtained by using monotonic iteration method .

通过单调迭代等方法得到问题解的存在性和唯一性，并通过实例予以说明。

Unitary linear regression is done between w~e、 w~ρ、 e~ρ、w_L~w_P. For α_v 、 C_ c between w、ρ、 e、 w_P in eastern China, unitary linear regression is done to silty clay as well as multivariant regression with coefficient iteration method and least-squares procedure are done to all kinds of soil, and the two results are compared. Unitary linear regression and multivariant regression are done to c_q、φ、 c_d、φ_d between e and I_P. Unitary linear regression and multivariant linear regression are done to napierian logarithm of q_u between e 、 I_L、 w_P and w_L, then the equations of regression are checked with other parameters.

对物理指标含水量～孔隙比、含水量～湿密度、孔隙比～湿密度、液限～塑限作了一元线性回归；对华东地区粉质粘土的压缩系数、压缩指数和含水量、湿密度、孔隙比及塑性指数作了一元线性回归；对华东地区所有土类的压缩系数、压缩指数和物理性质参数用系数迭代法和最小二乘法作了多元线性和非线性回归，并对两种方法得到的回归结果作了比较；作了快剪强度指标和固结快剪强度指标关于孔隙比和塑性指数的一元线性回归和多元线性及非线性回归；对无侧限抗压强度的自然对数值和孔隙比、液性指数、液限及塑限作了一元和多元线性回归，并用其它工程的参数对回归方程进行了检验。

In this method a windowing parameter estimation algorithm is applied to obtain the initiative value of iteration for the nonuniformly sampled record.

对周期信号采样序列重建问题，提出了一种基于采用时域布莱克曼窗减少频谱泄漏的自适应迭代重建算法，该算法利用对采样序列加窗的方法，有效地降低采样长度为非整数倍信号周期所产生的频谱泄漏。

A frame image of a video frequency sequence is read into a postpositional memory zone, and staring position and size information of a tracked object is obtained in the frame, then distribution statistical information of a target signature is extracted to build a gauss mixed model as an object template, a mean vector and a covariance matrix in gauss mixed distribution are used to describe the position and the size of the object, then the next frame image of the video frequency sequence is read into the postpositional memory zone. In a new frame video frequency image, a parameter estimation method is used to obtain object gauss mized model parameters in the current frame in iterative computation and find candidate template similar to the object template, and the final model parameters obtained in iteration are used to update the tracking window for realizing self-adaption of the tracked window.

将视频序列的一帧图像读入缓存区，获得该帧中被跟踪目标的初始位置和尺寸信息，然后提取目标特征的分布统计信息建立高斯混合模型作为目标模板，用高斯混合分布的均值向量和协方差矩阵描述目标的位置和尺寸，再将视频序列下一帧图像读入缓存区，在新一帧视频图像中利用参数估计方法迭代计算当前帧中目标高斯混合模型参数找到与目标模板最相似的候选模板，利用迭代得到的最终模型参数更新跟踪窗口实现跟踪窗宽的自适应。

Experiments are developed on different aspects, including the thickness of aluminum filter, choosing of the unattenuated data or not, characteristics of X-ray spectra, sensitivities to errors of attenuation data. Conclusion is that the iteration method is the best estimation technique.

以铝板作为滤波器材料，论文在滤波器厚度（包括最大厚度和最小厚度的选择）、未衰减数据的选取与舍弃、韧致辐射谱和包含特性辐射的光谱、对衰减误差的敏感性等多个层面进行仿真实验，比较分析了矩阵法和迭代法的优缺点，认为迭代法是进行光谱估计的最好方法。

this paper analyses the basic principle of tpc,compares the error performance in the system which has been applied with tpc with the uncoded system,studies the influences which different block codes and iterative numbers to tpc decode performance.under the circumstances of different iteration numbers and block codes,experiment simulation is carried on.the simulation results indicate that introduction of tpc can get the code gain of 5~6 db.tpc decoding algorithm is simple,and doesn′t have the error floor,the complexity of its hardware implementation is smaller,it is a kind of practical channel coding method.

摘 要：在分析turbo 乘积码的基本编译码原理的基础上，比较了未编码与编码后系统的差错性能，研究了选取不同分量码、不同迭代次数对tpc译码性能的影响。在不同迭代次数与分量码情况下，进行了仿真实验。仿真实验表明，在相同的差错性能条件下，采用tpc码能带来5~6 db的编码增益。tpc译码算法简单，没有错误平层，硬件实现复杂度较小，是一种非常实用的信道编码方式。

Using the compatible equation, the conversion between the cables unelongated length and its tensile force can be achieved rapidly and steadily in simple bichotomy method, even without iteration.

利用该协调方程式，无需迭代或仅采用简单的二分法便可以稳定快速地实现索原长与索力之间的换算。

The dispreading module is expressed through a bidirectional chart of a given nonlinear combination sequence. The bidirectional chart is optimized and the information data is decoded with a BP iteration method. The new system has better capability as the new system takes the interrelation between the information bits into consideration.

解扩模块通过给出非线性组合序列的双向图表达，优化双向图，用BP迭代方法来解得信息数据，由于新系统考虑了信息比特之间的相互关系，因此新系统有更好的性能。

I hope that this success is just the first in a long series.

我希望这只是成功的开始。

Three dimensional stresses on the interface of tire and soil, tire deflection and soil sinkage are measured.

测试轮胎——沙土界面上的三向应力、轮胎变形和沙土沉陷；建立考虑剪切应力对沙土承载特性产生影响的车轮牵引性能预测模型；分析车轮作用下土壤的纵向稳定性。