脉冲

The robust dissipativity for given supply rate has been studied for uncertain impulsive systems. The dissipativity conditions for such systems are derived by means of storage function method, matrix inequality and dissipativity inequality.

对不确定脉冲动力系统在给定供给率时的鲁棒耗散性进行了研究，利用储存函数法、矩阵不等式以及耗散不等式等方法，得到了不确定脉冲系统的鲁棒耗散性的充分条件。

Laser light travelling in a medium such as an optical fiber, the variations in the electric field of the beam itself may produce acoustic vibrations in the medium via electrostriction.

他们用两个2ns的&数据&脉冲前后耦合入玻璃光纤的一端，来模拟两个几乎同时到达的信息包，同时将一1.5ns的&写&光脉冲耦合入另一端。

Third, it has a discussion on the development of modern and traditional artificial neural network technology and their application in image processing. It summaries that the model of the Pulse-coupled neural network based on Elkhorn's model of the cat visual cortex was constructed according to the mammalian vision systems. The nonlinear modulation property, which is a generic and pervasive biological pulse-coupling mechanism, is used in the construction of PCNN. So, PCNN finds many applications in image processing, including segmentation, edge extraction et al. As all known, the performance of the image segmentation depends not only directly on the adjustment of PCNN parameters and the statistical properties of image but also on the cyclic iteration times N of PCNN. If the parameters have been properly set, it turns out to be essential to select a suitable criterion to determine N.

回顾了神经网络技术的现状，指出传统人工神经网络只利用了生物神经元有限的属性进行模型构建，而90年代产生的脉冲耦合神经网络充分利用了哺乳动物视神经网络特有属性，其神经元模型除了考虑生物神经元特有的线性相加、兴奋与抑制属性外，还考虑到生物神经元特有的非线性相乘调制耦合特性；考虑了哺乳动物视神经系统视野受到适当刺激时，相邻连接神经元同步激发产生35Hz～70Hz振荡脉冲串特性等，所以PCNN网络模型更靠近真实生物视觉特性，特别是哺乳动物视神经网络，特别适合计算机图像处理应用，尤其在生物细胞图像分割、图像平滑、降噪及图像中目标的分类、计数等方面的研究。

Complete control rate was 55.5% and 62.5%. Conclusion There is no significant difference between endolymphatic sac decompression and Meniett device treatment sac in curative effect.

内淋巴囊减压术与 Meniett 脉冲治疗的疗效无显著性差异，Meniett 脉冲治疗可以作为顽固性梅尼埃病的首选治疗方案。

There is no significant difference between endolymphatic sac decompression and Meniett device treatment sac in curative effect. Meniett device treatment can be the first choice for the patients with intractable Meniere's disease.

内淋巴囊减压术与 Meniett 脉冲治疗的疗效无显著性差异，Meniett 脉冲治疗可以作为顽固性梅尼埃病的首选治疗方案。

Experiment result demonstrates that its surface isn't oxidized by contrast with the stainless steel at 1 000 ℃. Under the single pulse high voltage, the film shows feeblish discharging characteristic after the bombardment of the high energy microparticles at hundreds times. This can increase the voltage holding capability and reduce the dynamic load of pulse power.

实验证明：在高达 10 0 0℃的温度下，相比不锈钢材料，薄膜表面几乎不被氧化；在单次脉冲高压作用下和在经受数百次高能微粒子轰击后，仍呈现出弱放电特征，既提高了耐压能力，又降低了脉冲电源的动态负载

The code MFEL 1 is applied for short pulse case of, for example, rf linac FELs, FELO is for single mode simulation which can describe the motion in phase space of electrons with energy spread and give some interesting results in short computer running time.

计算表明，在短脉冲情况下，激光强度、品质、增益和能量抽取效率强烈依赖于电子束流强度，对一定范围的能散变化却不敏感；但在长脉冲情况下，上述物理量对能散在同样范围内的变化较为敏感。

In order to control the forementioned switching power supply to accomplish an adjustable pulse voltage, the microcontroller W77E58 is combined with some programs to form an intelligent control system whose primary function is regulating and driving pulse signal.

结合一定的软件程序，建立了以W77E58为核心的智能控制系统，实现脉冲信号的调整和驱动，从而对前述的开关电源进行控制，以获得可调整的脉冲电压。

Firstly, the paper, combining the characteristic of synchronous pulse bursts and inhibition with the modified PCNN model, presents a way of finding the foveation points in the images adaptively and effectively, and simulates the human vision system. Secondly, PCNN is extended to PCNNs, based on the properties of information couple and transmission, an algorithm that is used to fuse images of the same target got by several sensors to an image is presented to simulate the human vision system. Thirdly, combining the properties of synchronous pulse bursts, capture, and transmission and competition of waves, the paper presents two ways of classification, one is an algorithm based on the properties of neuron to capture and inhibit to classify the data taking on any complex unlinear distribution robustly, the other is based on the restricted distance and modified of the former to remove the influence of inferior samples in classification; Finally, based on the accumulative difference pictures, and the forming and transmission of PCNN wave, selecting and controlling the direction of autowave by connecting the neighbouring neurons selectively, the paper presents a way to simulate the tracks of moving object and detect the moving direction.

首先结合PCNN的同步脉冲发放和侧抑制特性，提出了基于改进型PCNN的图像凹点检测算法，该算法是一种自适应而有效的图像凹点检测方法，并且较好地仿真了人类视觉系统；然后，结合信息传递和信息耦合特性，将PCNN扩展成PCNNs，提出了一种基于PCNNs的图像融合算法，能够将多个传感器获取的同一目标的图像信息融合到一幅图像中，有效模拟了人类视觉系统；另外，结合PCNN的同步脉冲发放特性、捕获特性和波的传播竞争特性，开拓地将PCNN用于模式分类中，提出了基于耦合神经元点火捕获／抑制特性的分类方法和改进的约束距离下的PCNN分类方法，前者可实现对样本空间中任意复杂分布训练样本的稳健非线性分类，而后者能够消除训练样本中刺点对分类的影响；最后，结合累积差分图像思想、PCNN波的形成与传播特性，通过各神经元之间连接取向来选择与控制自动波的流向，将PCNN用于运动视觉分析中的运动轨迹模拟及运动方向检测。

The results are as follows:(1) Long train electrical stimulation at the vMNF inhibitited the myoelectric activities of genioglossus markedly.

结果如下：(1)长串电脉冲刺激vMNF导致颏舌肌肌电活动明显被抑制；(2)在vMNF内微量注射谷氨酸钠，颏舌肌肌电活动出现明显的抑制效应；(3)单脉冲电刺激vMNF引起颏舌肌抑制反应的潜伏期为(20.6±0.4)ms。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。