查询词典 channel-section

The original Infomax is only applied in the instantaneous mixture and in the single channel blind deconvolution. This thesis applies the idea to blind sources separation in multiple channel convolutive mixture.

Infomax算法适用于瞬时混合情况下的盲分离和单通道盲解卷积问题，本文将Infomax算法推广到多通道卷积混合，对算法进行仿真，取得了不错的效果。

The foundation is ion channel activation on cell membrane and ion transmembrane movement, however, whether Ca2+-activated K+ channel involves in epilepsy induced by Coriaria Lactone is still unclear.

目的：以大鼠海马锥体神经元为靶细胞，了解马桑内酯在其致痫机制中对神经元钙激活钾通道的作用。设计：非随机对照实验。

By time-varying filtering, we realize the signal selectivity and interference suppression, especially for the signals with time-varying power spectrum. It is shown herein that conventional eigenstructure based methods are lower dimensional special case of the time-frequency subspace fitting method. The closed-form array response estimation algorithms for blind source separation in wireless communication is also developed in the dissertation by exploiting the data structure of second-order statistics of the array output in the presence of multipath. The proposed method achieves array response estimation with little constraint on signal property and propagation environment such as scatters or angular spread. Moreover, the array utilized here can be of arbitrary geometry and even uncalibrated. Since the closed-form solution is obtained, no misconvergency may occur and large amount of computation can be saved. The equivalent feed model and corresponding optimization designation are proposed to realize the downlink multi-user selective transmission. By coherent and non-coherent superposition of the electromagnetical field, multiple beams can be formed using a single array, so that each co-channel user signal is transmitted in each beam and will not interfered with each other. The proposed system scheme implements the digital beamforming and the channel allocation in the base band, therefore is suitable for the utilization of the radio software technology. The feasibility and effectiveness of the proposed model are proved by the RF experiment.

在窄带条件下，GSC－SSF方法还可以提高阵列的虚拟孔径，从而提高估计的性能；可以证明，Cyclic DOA 和SC-SSF方法可看作该方法的特例或近似； 3、提出了二维GSC－SSF方法和宽带谱相关DOA矩阵方法，利用信号的循环平稳特性解决了宽带条件下二维 DOA 估计问题，并具有阵元数少、计算量较小的特点； 4、提出了时频子空间拟合和宽带时频DOA估计算法，将联合时频分析的理论和方法引入到阵列信号的空间谱估计研究中，利用时变滤波实现信号选择性测向和干扰抑制，特别适合于谱时变信号；可以证明传统特征结构法可看作是时频子空间拟合方法的特例； 5、提出了多用户环境下阵列响应的估计方法——CARE方法，该方法对信号结构和传播参数（主要是散射源分布与角度散布）的约束较少，适用于各种几何结构的阵列甚至未校准的阵列，能够直接得到阵列响应的闭式解，因此计算量小、稳健性好，不存在收敛问题； 6、提出了针对多用户下行选择性发送的阵列等效激励模型、优化设计方法及其系统实现方案，通过空间场的相干叠加与非相干叠加使得单一阵列能够形成多个波束，并保证各波束内的用户信号各不相同且相互干扰最小；其系统方案具有在基带实现数字波束成形、信道分配并便于软件无线电实现的特点，其有效性已得到外场实测数据的证实。

The simulation results show that, compared with the conventional partially equispaced pilot design, the proposed scheme can provide much more accurate channel estimation when the channel length is large.

仿真结果显示，与传统的部分等间隔导频序列相比，由所提算法得到的导频序列可以在信道长度较大的情况下提供更准确的信道估计。

Firstly , we introduce the basic theory of the coding and decoding of the channel which describe the possibility of the errorless transmission in the channel existing interference .

首先从信道编码的基本定理入手论述了在有干扰存在的信道上进行无差错传输的可能性，这是纠错编码研究的理论依据与努力方向。

Based on this mapping, the processing of visual information is separated into foveal and peripheral channel, or what and where channel, which mainly relates to the tasks of interesting object recognition and fixation point movement respectively.

不同于以往的大多数工作，本文强调了将注意目标的选择建立在基于低级刺激的自底向上注意过程和基于知识的自顶向下注意过程相结合的基础上。

To this, the personage inside a few course of study points out, internet operation business regards the channel that business popularizes as the Internet bar, what raised oneself on certain level is famous degree, but at present both sides keeps more onefold collaboration kind only, the Internet bar is appropriative gangplank only or channel, internet bar resource did not get farther deepness is dug, the Internet bar also did not share the interest of deeper administrative levels.

对此，一些业内人士指出，互联网运营商把网吧作为业务推广的渠道，在一定程度上提高了自身的知名度，但是目前双方只停留比较单一的合作方式，网吧只是充当跳板或者渠道，网吧资源并没有得到进一步的深度挖掘，网吧也没有分享更深层次的利益。

Experiment showed that the separation efficiency in glossily channel for fluorescein sodium was 4.8 x105 per meter, under the electric field 200 V/cm and the separation length 3.5 cm, 17% higher than in rough channel.

用3.5cm分离长度的芯片毛细管电泳分离荧光素钠时，光滑通道的理论板数比粗糙通道提高17%，达到48万/米的理论板数。

The outward rectifier K+ current current was the dominant K+ current in the whole cell currents in Deiters' cells. In the presence of 200μ M linopirdine, the Ik current was not significantly effected. Our findings demonstrated that the KCNQ heteromeric or homomeric potassium channel may be the molecular basis for the peak outward K+ current and testified that the inward IKn current is mediated by KCNQ potassium channel.

在细胞外液中，加入100 μmol/L利诺吡啶后，OHCs中的四乙基二乙胺敏感的钾电流峰电流成分被抑制，稳态电流幅值减小，且电流的失活时间常数明显延长；在细胞外液中加入100 μmol/L和200 μmol/L利诺吡啶后，OHCs的内向性钾电流IKn被完全抑制；而细胞外液中利诺吡啶终浓度为200 μmol/L 时，Deiters细胞的外向整流性钾电流幅值无明显变化。

After reforming and opening up, perfect original country and the unceasing reform along with economic system pass adopt low wages for individual , adopt high profit and tax for government enterprise to hand in the unique capital of way control socioeconomy surplus forms machinemade gradual disintegration, government relies on traditional financial fund to carry out the channel of capital input get hinderance, but now has established so far still the support economic development in operation new channel —— financial support system.

改革开放后，随着经济体制的不断改革与完善，原来的国家通过对个人采取低工资、对国营企业采取高利税上缴的方式控制社会经济剩余的独特资本形成机制逐渐瓦解，政府依靠传统的财政资金进行资本投入的途径受阻，但这时设立了至今仍在运转的支撑经济发展的新渠道——金融支持体制。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。