查询词典 impulsive

The existence of periodic solutions for a class of impulsive differential equations of mixed type is studied by constructing periodic sequence solutions of difference equations.

通过构造差分方程的周期序列解，研究了一类混合型脉冲微分方程周期解的存在性。

In Chapter 4,we consider the existence of positive periodic solutions for impulsive differential equations with a parameter.

第四章讨论了一类含有参数的脉冲微分方程正周期解的存在性。

ABSTRACT After the ebb-tide of the May 4th Movement, the Chinese modern thoughts and literary circles went from relative unity towards diversity Up to the 1930's, behind the spirit transformation at the end of the twenties, Chinese modern intellectuals began to relocate and redesign their own outlooks on life and literary ideal The Lunyu School, which was led by Zhou Zuoren and Lin Yutang, mostly appeared as leisure humorous essays in some journals, such as Lun Yu, Ren Jian Shi and Yu Zhou Feng which was edited by Lin Yutang It formed an unique landscape at that time This thesis focused on the Lunyu School as the main object of my study I investigate the Lunyu School by putting it into the vertical orbit of changes of the thoughts and literary circles after the May 4th Movement, and by comparing it with the mainstream of Left-wing and other literary schools in the thirties Through the exploration of Lunyu School's political and social thoughts, literary ideas and aspects of prose creation, I pursue the life choice of some free intellectuals in the thirties, and draw psychological outline of an age of intellectuals, which was very complicated and attractive during that specified time and space When we reconsider the rights and wrongs, the merits and demerits, and the gains and losses in theory and creations of Lunyu School intellectuals, any oversimplified study method would be of"no avail but the waste of mind"Unless ample estimation of their own complexity and contradiction is made, furthermore subtly delineates quite a lot of originates which caused these complexity and contradiction, the research will not be valuable In face of the whizzed coming Left-wing movement in literature, Lunyu School acted as a reconsideration in literary modernity such reconsideration is a layer of thinking They introspected intellectuals'essential mind and enlightened reason, querying the impulsive, swift and fierce ideological trend, judging by value in the relations between individuality and society, individuality and era, literature and politics.

五四落潮后，中国现代思想界、文学界由相对统一走向分化，至二十世纪三十年代，现代知识分子经由二十年代末期的精神蜕变，开始重新定位和设计自己的人生观和文学理想。以"京兆布衣"周作人为精神领袖、以林语堂为主帅的论语派，以幽默闲适小品文相号召，在林语堂主编的一系列刊物《论语》、《人间世》、《宇宙风》上聚集，南北呼应，造成了当时文坛的一种独特景观。本论文以论语派为研究对象，将其放在五四以后文学界与思想界变动的纵向轨迹上，放在与三十年代左翼主流话语的颉颃及与其它文学流派的比照中加以考察，通过对论语派政治社会思想、文学观念及散文创作诸方面的探讨，追索三十年代一部分自由知识分子的人生选择，勾划出他们在一个特定时空里复杂又极具魅力的心理轮廓。学术界对论语派中一些主要作家已有较深入的研究，但迄今为止，尚无从整体上对这一文学流派作宏观研究的专著，而陈旧的理论视界又往往阻碍了对论语派的重新评价。

Its an engrossing impulsive between the two.

两人之间存在很有意思的火花。

In Chapter 4, we consider SIR epidemical models with continuous and impulsive vaccinations, the incidence is bilinear. The reproduction numbers have been obtained for those models.

在第四章，考虑了具有连续预防接种和脉冲预防接种的SIR流行病模型，分别获得了它们各自的基本再生数。

In the SIRS epidemical models with impulsive vaccinations, we prove the existence and global stability of the disease-free periodic solution.

对脉冲预防接种的SIRS流行病模型，证明了无病周期解的存在性和全局渐近稳定性。

In Chapter 5, SIRS epidemical models with continuous and impulsive vaccinations are discussed. We find out reproduction numbers corresponding to those models.

在第五章，研究了具有连续预防接种和脉冲预防接种的SIRS流行病模型，在连续预防接种和脉冲预防接种下，分别给出了SIRS流行病模型基本再生数。

In Chapter 2, the exponential stability of two kinds of impulsive differential equations with delays is considered.

第二章，研究了两类脉冲时滞微分方程的指数稳定性。

This paper discusses the exponential stability of periodic solution for impulsive neural networks.

本文讨论了一类脉冲神经网络的周期解的指数稳定性。

The ADWM filter has the features of directional filter, which is especially effective at preserving edges, and the features of center weighted median filter, which can reduce random noise, and moderate amounts of impulsive noise also, to some extent, as well as preserve the details via adaptively determining the weight of the center pixel according to the lowest variance of pixels within all the sub-windows.

ADWM滤波器既有定向滤波器的特征，也有中心加权中值滤波器的特征。定向滤波器可以有效保持边缘，而中心加权中值滤波器对减少随机噪声尤其有效，同时也能在一定程度上减少冲击噪声的数量，并根据子窗口内像素的最低方差自适应地调整中心像素的权值以保持图像的细节。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。