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Results: Digital quantitative EEG, some absolute, relative, monopolar mean frequency of kinesthesia and kinesthetic perception area FP2, F6, C4, F8, T6 were lower than the value of corresponding hemishere within delta, theta, alpha, beta band.

结果:数字量化头皮脑电位中FP2,F6,C4,F8等脑区的绝对值,相对值和运动觉与运动知觉电位在δ,θ,α,β,4个频带比相对应脑区各项值低。

Characteristic data have been worked out, including the maximum Lyapunov index λ, fractional dimension D, lacunarity Λ and eight energies of various frequency bands. After being normalized, they can function as the characteristic vectors. Then, they are transmitted into an artificial neural network to perform pattern recognition.Starting from the mechanism of ultrasonic generating, initial ultrasonic pulses are calibrated. A stylish discharge source is directly coupled with the ultrasonic sensors, and work out actual discharge magnitude.

利用非线性和非平稳的方法对超声波信号进行了分析处理,对于局部放电模型得到的信号,计算了超声波信号的Lyapunov指数、分维数D、空缺率、小波包分解的8个频带能量,得到了11个特征数据,归一化处理后形成特征向量,由人工神经网络进行识别,实现了对局部放电典型模型的模式识别,显著提高了模式识别的正确率,并分析了传播途径对识别的影响。

The microwave MMIC technique and EMC theory are introduced in the design process of the transient light signal receiver system which is based on underwater laser backward scatter detecting technique to improve some key technology such as the broadband and low noise etc.

基于水下激光后向散射光信号检测技术,针对微弱高速瞬态光信号接收系统中所要求的宽频带、低噪声等关键技术指标,将MMIC技术和电磁兼容性理论应用于高速瞬态光信号接收系统的设计过程中。

Based on a localization principle and subband decomposition, monoscale ridgelet and curvelet were proposed, both of which were derived from ridgelet transform and can efficiently deal with smooth images with smooth edges including straight and curve singularity. They, hence, are of better application potention. sparse representation;optimal basis;ridgelet;curvelet;image denoising;non-parametric estimation

单尺度脊波和Curvelet变换由脊波变换发展而来,分别利用了函数局部化和频带剖分的思想,将脊波理论发展到了一个更高的阶段,这两种变换都能"近似最优"的表示直线和曲线奇异,因而具有更好的应用前景。

In the past, the high frequency resonance technique is usually applied in the envelope detection for a vibration signal with amplitude modulation. When applying the Hilbert transform in the high frequency resonance technique for the envelope detection of vibration signals, the computing burden is very high. On the other hand, when applying the linear least squares analysis method, the computing burden is lower. When applying the envelope detection in the lowest vibration mode, an accelerometer with the low-pass filtering cutoff frequency at 4kHz should be choose.

在过去的研究方法中,振动讯号之振幅调变通常以高频解调分析法应用於包络讯号侦测,而高频解调方法应用希尔伯特转换的包络分析,所需要的计算量是非常的高,若以线性最小平方分析法应用於高频解调分析法中,则所需要的计算量较小,如果以最低模态来估测包络讯号时,可以适当的选取加速规来代替低通滤波器,而加速规的截止频带必须在4kHz左右。

Show to list the word carrier machine and simulated carrier machine of entire quantity on transmission capacity comparison.

全数字电力线载波机在占用4kHz线路频带不变的前提下,成倍地扩展了传输容量。

Considering the non-stationary specialties of AE signals, the diamond blunt feature extraction method based on bispectrum was studied. Furthermore, the diamond blunt feature extraction method based on main diagonal slice of normalized bispectrum magnitude of AE signal was proposed.

深入研究了砂轮修整过程中声发射信号的产生机理及其时频特征,提出了基于声发射信号的小波包频带能量分解的金刚石笔钝化状态特征提取方法;将高阶累积量和双谱理论引入到金刚石笔钝化状态的特征提取中,提出了基于声发射信号归一化双谱模对角切片的特征提取方法。

In Chapter 4, the meander line and fractal technique are introduced to the design of antenna.

设计了一种用双杆作辐射体的平面组合单极子天线,具有结构简单、尺寸小、频带宽等诸方面的优点。

An experiment is done to measure the dispersion characteristics of the symmetrical mode. The experimental results show good agreement with the theoretical value. In addition, an experimental study of the πline is made.

同时加工制作了作为脊加载环板线一种发展型的π型慢波线,并进行了实验研究,实验证明,π型慢波线是一种宽频带大功率的慢波系统。

To that end, it plans to release a further 500 megahertz of bandwidth over the next decade and auction it to the mobile carriers.

为此,他计划在今后10年额外放出500兆赫的频带宽度并向移动服务提供商拍卖。

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I didn't watch TV last night, because it .

昨晚我没有看电视,因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。

I'm running my simile to an extreme.

我比喻得过头了。