收敛

We introduce the notion of fuzzy-valued continuous function on a compact set K in a metric space, and discuss its properties; On this base, we study the uniformly d∞-convergence of a sequence of fuzzy-valued continuous function on K. We prove that the space of fuzzy-valued continuous functions on K, i.e. C(K, E1), is a complete metric space with respect to the metric D.

引入了定义在某度量空间的紧子集K上的模糊数值连续函数和水平连续函数的概念，讨论了它们的某些性质；在此基础上，研究了K上模糊数值连续函数列的一致d∞-收敛性，证明了K上模糊数值连续函数空间C(K， E1)关于度量 D 构成一个完备的度量空间。

As a kind of complete orthogonal polynomial system, U system has many good properties such as orthogonality and convergence.

作为一种可选定次数的完备正交多项式系统，U系统所定义的矩具有标准正交性、收敛性等优良性质。

to reduce the impact of carrier frequency offset in ofdm system,this thesis designs a new carrier frequency offset estimation scheme for ofdm system.the carrier frequency offset estimation includes acquisition and tracking.we adopt variable step size adaptive algorithm.the acquisition range of the proposed algorithm is as large as one half of the overall signal bandwidth.through this method we can not only avoid the feedback by using forward error correction,but also reduce the times of complex multiplication in order to reduce the power consumption of the system.this algorithm not only has low complexity and fast convergence nut also can improve the demodulation performance of ofdm system.computer simulation illustrates the superior performance of the proposed algorithm with regard to estimation accuracy in both awgn channel and multi—path channel.

摘 要：为了减小正交频分复用系统受频率偏差的影响，在ofdm系统中设计了一种新的载波频偏估计算法。频偏估计包括跟踪和捕获两个阶段，文中采用变步长自适应算法来进行跟踪，这个跟踪算法的捕捉范围是整个信号带宽的一半。通过此方法，不但可以利用前向纠错的方式来避免反馈，而且可以缩减复数乘法的次数以降低计算复杂度和系统功耗。该方法运算复杂度低，并具有较好的收敛性，能改善odfm的解调性能。从计算机的仿真效果可以看出无论是在awgn信道上还是在多径信道上都表现出了卓越的性能。

The artificial neural network has very strong information processing, memory and study the function by itself, but because its algorithm complicatedness, learning process are longer, the parameter disappears slowly etc. to make its application limited.

人工神经网络具有很强的信息处理、记忆及自学习功能，但由于其算法复杂、学习过程较长、参数收敛慢等使其应用受到限制。

In addition, a training algorithm based on a composite object function is proposed. This algorithm simplified the form of the composite object function and use adaptive method to adjust parameter of the composite object function so that the training speed is increased in the later period.

此外，还提出了一种基于综合目标函数的神经网络训练算法，在该算法中对综合目标函数进行了简化，并采用自适应的方法来调整目标函数的参数，使训练后期的收敛速度明显提高。

By constructing a Lyapunov-Krasovskii-like composite energy function, we prove the boundedness of all signals and the convergence of tracking error.

通过构造一个Lyapunov-Krasovskii型复合能量函数证明了所有信号有界并且跟踪误差收敛。

Although many results have been obtained, there are still a number of very interesting questions about composition operators unsolved. There is much more to be learned about the collective compactness and convergence of composition operator sequences, compactness of various product of composition operators, cyclicity, closed range and spectra of composition operators in various settings. Commutants of composition operators seem to be very difficult to characterize. Only a little is known about their reducing invariant subspaces. There has been no work on C〓 algebras generated by composition operators.

尽管已取得如此丰富的结果，但是关于复合算子仍然有大量非常有意义的问题值得研究，例如：复合算子序列的总体紧性及收敛性、复合算子的各种乘积的紧性、复合算子的闭值域问题、复合算子在各种解析函数空间上的谱的描述、换位复合算子的刻画、复合算子诱导的不变子空间问题、循环复合算子的研究、由复合算子生成的C〓-代数的研究、不同解析函数空间之间的加权复合算子及复合算子半群等等问题。

Software, hardware, and space will be introduced to students in terms of compound media device. Students will be asked to brainstorm in groups in order to exchange thoughts and complete their own compound media device which will be displayed and recorded in public.

本课程就复合媒体装置以软体、硬体、空间分别论述，学生分组并透过团体脑力激荡进行发散与收敛思考，用深度和广度的思维结合多人创意，最终协同完成复合媒体装置於特定公众场合展示与作观察记录。

Simulations show that when the signal to noise ratio is greater than 0dB, the inverse model algorithm converges rapidly and stably with computational error being within a minimal bound.

仿真结果表明在信噪比大于0dB时，该自适应逆模型算法收敛迅速、稳定，计算误差保持在较小的范围之内。

The application of an algorithm based on weighted least squares estimation method measuring and computing parameters of synchronous machine is studied,these parameters can be directly obtained by repeatedly p...

针对参数辨识的收敛性和多值性问题，提出了一些有效的方法，如采用动态阻尼因子和动态增益矩阵，提高了参数辨识的精度和算法的稳定性。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。