逼近

If a poset is explained into a set of propositions in the view of logic,then the algebraic completionis closed for the finite deduction system in logic,therefore,the algebraic completion reflects the logically closed extension of preliminary propositions.

本文考察(来源：A1dBCad论8a文网www.abclunwen.com)这种逼近状态是代数格的情形，一旦偏序关系看作信息的某种逻辑蕴含关系，代数完备的本质是从逻辑上封闭逻辑推理系统。

It has a long history to study on the problem of best restricted range approximationin a space of real-valued continuous functions on a closed interval, while the corresponding problem in a space of complex-valued continuous functions on a compact metric space was just introduced in recent years.

三。实值连续函数空间中最佳限制值域逼近问题的研究有较长历史，而复值连续函数空间中相应问题的研究却是近几年来的事情。

In this article, a class of nonlinear elliptic boundary value problems with singular coefficient in one-dimensional domain was considered.first of all existence and uniqueness of the weak solution of the variational problem correspondin

本文考虑如下一维四阶非线性奇异边值问题 Lu=D~2p(xD~2u-Dp(xDu+pu=fx，u(x x∈I≡(0，1)u(0)=u′(0)=0 u(1)=u′(1)=0的有限元方法。给出相应问题广义解的存在唯一性和先验估计，并通过与解的E-范数投影相比较得到Galerkin逼近的L_2和最大

If a function with multi coefficient remained to be determined is chosen, the calculation is very complicated.

这主要是由于管柱长度的影响，使得其屈曲形态相当复杂，不容易找到相近的挠曲线函数，如果用含多个待定系数的近似函数去逼近，其计算变得相当繁锁。

In allusion to dynamic nonlinear large-scale industrial processes, to bring up gained the method of decentralized identification for the strong consistency estimates of the divisible steady-state models, it is used that property of polynomial can infinitely approach to the nonlinear function and in optimization processes use step signals as input signals, the divisible steady-state models of dynamic nonlinear large-scale industrial processes, and the cognizable conditions are obtained.

针对动态非线性大工业过程，提出了得到其可分稳态模型强一致性估计的分散辨识方法；利用多项式对非线性函数的无限逼近的性质和优化过程中设定点的阶跃信号作输入激励信号，获得了动态非线性大工业过程的可分稳态模型和可辨识的条件。

A new method for reservoir identification is proposed which is based on the combination of the approximation principle of BP network and the technology of preprocessing.

根据BP神经网络的逼近原理，提出了基于滑动平均预处理的BP神经网络储层识别方法。

When they moved in close, I spoke with commanding officer Maj.

当他们逼近的时候，我与先前打过交道的长官Maj。

VQ is easy and tend to realize, HMM can comminute the speech dynamically, it can embody not only the dynamic characteristic but also the stationary characteristic of the speech. GMM is a special HMM, it uses combination of many weighted Gaussian density function to approach the distributing density of speaker characteristic vector in characteristic space, so it is also a good way.

VQ方法是最简单又易于实现，HMM方法能将语音动态分割，既能体现语音的动态特征，又能体现语音的平稳特性，GMM用多个加权高斯密度函数的组合来逼近说话人特征矢量在特征空间的分布密度，收到了较好的结果。

There are mainly four innovations made in this thesis: By introducing the notion"collectively compact operator sequence"into the study of composition operators, we give a sufficient and necessary condition on generalized Nevanlinna counting functions of the inducing maps for {C〓} to be collectively compact, extend some previous results and enrich the content of the study of composition operators.

本文主要在以下几个方面有所创新：第一，把逼近论中的算子序列总体紧性的概念引入到复合算子理论的研究中来，并通过值分布理论中的广义Nevanlinna计数函数给出了Hardy空间与加权Bergman空间之间的复合算子序列的总体紧性的刻画，从而推广了Shapiro的结果，丰富了复合算子理论的内容。

The wavelet properties of compact support and multi-scale analysis can ensure the target function of the whole time domain optimization, some important points fitting and the optimal parameters aggregation.

利用小波的紧支局部性和多尺度分析特性，既保证了整体误差性能的优化，又突出了重要拟合点的逼近要求，并实现了优化变量的集结。

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。