Stabilization of Delayed Networks with Different Nodes

In this paper,the control of complex delayed networks with different nodes is proposed.Firstly,the stabilization of coupled networks with time delay is investigated.By constructing a Lyapunov function,a linear feedback controller design procedure for the networks is converted to the problem of solving a set of linear matrix inequalities.Then the results are extended to networks with both delayed dynamical nodes and delayed couplings.It is shown that the stabilization of complex networks is determined by the dynamics of each uncoupled node,coupling matrix and feedback gain matrix of networks.Two examples are simulated.In the first example,a network with 10 nodes consisting of Lorenz systems and systems proposed by Zhang in 2009 is given.It is found that the network states are divergent without control,and convergent under designed linear feedback controllers.In the second example,a larger network with 100 nodes consisting of delayed Chen systems and delayed Lorenz systems is given.The proposed method is also effective for large scale networks.     

基于Gabor核函数窗设置的图像识别

提出一种依据Gabor核函数窗的设置对红外图像进行识别,首先给出Gabor核函数窗的定义,分析核函数窗对红外图像识别卷积过程,给出了核函数窗的时窗和频窗,最后在对红外图像滤波识别时给出了最优核函数窗的计算方法。计算机仿真实验表明,只有在优化核函数窗设置设置情况下,才能取得了较好的识别结果。     

陆英及其提取物乌索酸对小鼠出血和凝血时间的影响

目的：通过实验研究陆英及其提取物乌索酸对动物出血、凝血时间的影响。方法：分别灌胃给予小鼠陆英水煎剂、乌索酸（15、30、60mg/kg）、生理盐水,每天一次,共给药7天,采用断尾法测定小鼠的出血时间,玻片法测定小鼠的凝血时间。结果：与生理盐水组比较,陆英、乌索酸（15、30、60mg/kg）组均有显著性差异（p〈0.05）。结论：陆英和乌索酸均能明显延长小鼠出血时间和凝血时间,与其活血化瘀功效相符。     

扁平化、数据化时代的高校英语专业文学教学——兼谈生态批评教学

在一个扁平化、数据化的时代,文学的认知功能大大削弱,娱乐功能大打折扣,精神引领功能亦遭受质疑。高校英语专业文学教学的冲击早已是不争和不容忽视的事实。通过对扁平数据化时代与文学教学现状的概述、文学课程目标内涵的定位,分析造成困境的原因,进行教学的反思,寻求合理有效的出路。生态批评作为这个时代一个“环境敏感性话语”,其跨学科、多文化和国际性表征,其正义主题和时代感,可望成为当下高校英语专业文学教学一个值得推广的教学和研究范例。     

跨文化交际中的时间观念差异及对策

时间作为一种无声的语言,文化的一个重要部分,在我们日常的生活中扮演着非常重要的作用,而作为文化的差异必然带来时间观念的冲突,时间观念的冲突又反过影响着不同文化人们之间的正常交往。因此分析不同的社会之间,不同的文明之间,以及处在不同的文化中的人们在跨文化交际出现的时间观念的差异和冲突具有重要的现实意义。本文主要就美国人类学家爱德华霍尔的时间存在理论和美国人类学家-克拉克洪与斯乔贝克的时间导向理论对中国,美国和古巴三国的时间价值观进行对比研究,从而更好地对一些跨国外企以及跨文化工作者提供理论和现实参考。     

间阻思慕传深情——谈《诗经》中的“思慕诗”

爱情诗是《诗经》中的一种重要题材,主要是指恋歌以及和婚姻爱情生活相关的诗篇。在此主要以《诗经》中描写男女相思爱慕、征夫思妇情怀的诗歌为研究对象,以诗中描写的时空距离为切入点,试图对此类诗歌的创作动因、抒情艺术方式以及抒情艺术特征等问题作出简单的分析和探讨。     

A focus on time-lapse ethnography: learning to teach

This article makes the claim that developing ethnographic work through follow-up interviews can add to our understanding of researched phenomena and explores how using concepts from Bourdieu and theories on the social construction of time strengthen the research design and add a stronger longitudinal diachronic element to data analysis. Extending an ethnographic study of learning to teach by interviewing respondents nine years after the study and after the completion of their teacher education course is shown to develop insights around the initial research findings by focusing on the temporal aspects of data. Adopting this methodological approach can develop small-scale qualitative work and contribute to an accumulation of research findings to avoid simply revisiting familiar research ground.     

Ethnographical mapping of thick places – teaching and learning practices in teacher training schools

The aim of this study is to use an ethnographic method in order to map where understandings of teaching and learning practices (TaLP) are being discussed in three schools. The questions posed are: what are the relations between thick places, meaning, affect, and TaLP? This study uses an ethnographic method outside the classroom and in between different activities as a starting point for understanding TaLP and where many students at the same school produce thick places of affect and meaning. The main conclusion from this study is that matters of where, what, and who are shaping TaLP. Another important conclusion from this study is that training schools offer new conditions for teacher students, but also offer new opportunities for ethnographic studies that aim at understanding these school environments with a range of new questions.     

一类非线性时滞系统的自适应动态面控制

针对一类严格反馈非线性时滞系统,提出了一种自适应神经网络动态面控制方案。通过引入一阶滤波器,避免了传统反演设计中的＂计算膨胀＂问题。通过构造恰当的Lyapunov-Krasovskii函数,对未知时滞项进行了补偿。此外,基于Lyapunov稳定性理论,证明了闭环系统所有信号半全局一致最终有界。最后,仿真实例表明了所提控制方案的有效性。     

浅析基于ETL技术和全表扫描哈希对比的数据同步方法

数据同步技术随着企业对各个信息系统之间数据共享的重视而变得越来越重要,数据同步的方法有很多,本文主要介绍基于ETL技术和基于全表扫描及哈希对比两种数据同步方法。基于ETL技术的数据同步是基于中间逻辑表完成数据转换,再通过主键和时间戳的对比而完成数据同步过程。本文以Kettle工具为例进行分析;基于全表扫描及哈希对比的数据同步是基于视图完成数据转换,再通过hash算法扫描对比而完成数据同步过程。