收敛

Generalized Pulse-Spectrum Technique is a kind of widely applied and effective methods for solving inverse problems of geophysical prospecting. But it is still imperfect in the aspects of convergence domain, ability of anti-noise, computaional cost, choice of regularized parameter, and so on.

广义脉冲谱方法是求解地球物理反问题的应用广泛而有效的一类方法，但在收敛范围、抗噪能力、计算量、以及正则参数选取等方面仍存在较大不足。

This algorithm characterizes large convergence domain and better reduction noise performance, especially in condition of 5dB～20dB SNR.(6) An equalizer to compensate non-linear time-variant channel in chaotic communication system is conducted.

同其它的方法相比，这个新的迭代算法具有大范围的收敛区域和良好的降噪效果，特别是在信噪比为5dB～20dB时，明显优于其它方法。

In order to overcome bad learning transients in ILC, the convergence condition in frequency domain is derived, and then the implementation method for monotonic decreasing learning transients is described with zero-phase filtering.

为了消除学习算法应用时出现的坏学习瞬态，这里先推导出所提控制算法在频域下的收敛条件，再给出基于零相位滤波的单调递减学习瞬态。

For a long time, it is a main factor to hamper the real-time application of SHET. The research is carried on aiming to quickening convergence speed. The automatic-changing Homotopy algorithm is proposed in the dissertation. The algorithm, which can change the solving method based on fundamental component, has the advantages of large convergence domain, high convergence rate and high precision. Many trigonometric functions are contained in the mathematical model, during solving equation, the calculated speed and the precision are affected by the calculations of trigonometric functions.

特定谐波消除技术的数学模型是一组非线性方程组，长期以来，方程的求解一直是限制该技术实时应用的关键因素，本文针对特定消谐方程组的快速求解进行细致的研究，提出自动变同伦算法，该算法可根据基波幅值的取值范围来决定采用的求解方法，其对求解方法的可选择性使该算法与其它算法相比具有计算速度快、收敛域宽、计算精度高等优点。

In the system of anti-active-interference, we introduce the FBLMS algorithm which can overcome the drawback of exacerbation of the convergence properties in the domain of time due to eigenvalue spread of input signal correlation matrix and improve the processing rate because of the parallel properties of the FBLMS algorithm. After discussing the properties of the FBLMS algorithm and its developed algorithm, the paper presents the result of computer simulation and proves the reasonableness and feasibility of canceling the active interference in frequency agility fuse.

在捷变频引信抗有源干扰系统中，引入了频域自适应滤波算法FBLMS，可以克服输入信号相关矩阵特征值分散所导致的时域横向滤波算法收敛特性恶化的缺点，并且，由于算法的并行处理特性，大大提高了算法的实时处理性能，本文在分析了频域FBLMS算法的性能和改进算法后，给出了计算机模拟仿真结果，验证了对捷变频引信有源干扰抑制的合理性和可行性。

HJB equation; quasivariational inequality; domain decomposition; convergence; iterative algorithm; relaxation algorithm; existence; multigrid method

基础科学，数学，数学分析HJB方程；拟变分不等式；区域分解；收敛性；迭代法；松弛算法；存在性；多重网格法

Based on MATLAB Toolbox PSO algorithm model introduced shrinkage factor, convergence rate increase, but for high-dimensional optimization function effects are still not ideal.

基于MATLAB的微粒群工具箱，算法模型中引入收缩因子，收敛速度有所提高，但对高维函数的优化效果仍然不理想。

Total factor productivity; convergence hypothesis; regional disparity; data envelopment analysis; agriculture

全要素生产率；收敛性；地区差距；数据包络分析；农业

Furthermore, a changeable update rule was introduced to accelerate the convergence speed, a forget factor and a predefined error bound were used to enhance the robustness of the algorithm.

同时还提出可变学习增益的方法来加快算法收敛速度；应用遗忘因子和学习律误差容限控制的方法来提高学习算法的鲁棒性。

Secondly, after studying modeling nonlinear systems using Volterra series model, the adaptive algorithms are presented. It is also investigated that step factor controls the convergence of the algorithms.

其次，研究了基于Volterra级数模型的非线性系统的自适应辨识问题，提出了基于Volterra滤波器的自适应算法，讨论了步长因子的确定问题以及对算法收敛性的影响。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐