结构损伤检测的单元模态应变能方法

基于单元模态应变能的概念,推导了基于单元模态应变能变化率的结构损伤识别方法,该方法仅以结构破损前后的模态振型和单元刚度矩阵为诊断信息.然而在实际的损伤检测中,将不可避免地遇到测试噪声的影响.因此,本文还对一定噪声影响下的单元模态应变能方法进行了研充,并提出了噪声影响下的解决措施.研究表明,即使有一定的噪声影响,根据此方法利用低阶测试模态振型数据,仍能得到较好的损伤诊断结果,并且方法简便,便于实际应用.     

从知识—权力—话语考古中医

从中医与西医各自形成以来的一段相当长的历史时期中,两者都是和谐共处,互不干涉的。而近百年来现代化成为中国几乎所有领域都无法回避的语境,中医药也不例外,关于中医是否科学、中医是否该现代化的讨论一直没有停止过。那么这一现象的背后隐藏着什么样的话语,又是什么在控制着这种话语权?福柯的知识—权力—话语理论或许能提供看待这些问题的不同视角。     

粗糙环的同构

基于粗糙群、粗糙子群、粗糙加群、粗糙正规子群、粗糙商群、粗糙环、粗糙子环、粗糙理想,粗糙商环群和粗糙环的同态的基本概念,讨论粗糙环同态和同构的性质,给出粗糙环同构的三个定理,得到了粗糙环的同构的一些性质,同时给出了这些性质和定理的严格证明,进一步补充和完善了代数学上的粗糙集理论.     

直方图均衡处理方法的研究

直方图均衡处理是一种重要的图像增强方法。本文在介绍直方图均衡处理方法原理的基础上分析了直方图均衡处理方法的优缺点。     

Hydrogen Bonding-Assisted Synthesis of Silica/Oxidized Mesocarbon Microbeads Encapsulated in Amorphous Carbon as Stable Anode for Optimized/Enhanced Lithium Storage

The practical application of silica-based composites as an alternative to commercial graphite anode materials is hampered by their large volumetric expansion,poor conductivity,and low Coulombic efficiency.In this work,a novel silica/oxidized mesocarbon microbead/amorphous carbon(SiO_2/O'MCMB/C) hierarchical structure in which SiO_2 is sandwiched between spherical graphite and amorphous carbon shell was succes sfully fabricated through hydrogen bonding-assisted self-assembly and post-carbon coating method.The obtained three-layer hierarchical structure effectively accommodates the volumetric expansion of SiO_2 and significantly enhances the electronic conductivity of composite materials.Moreover,the outer layer of amorphous carbon effectively increases the diffusion rate of lithium ions and promotes the formation of stable SEI film.As a result,the SiO_2/O'MCMB/C composite exhibits superior electrochemical performance with a reversible capacity of 459.5 mA h/g in the first cycle,and the corresponding Coulombic efficiency is 62.8%.After 300 cycles,the capacity climbs to around 600 mA h/g.This synthetic route provides an efficient method for preparing SiO_2 supported on graphite with excellent electrochemical performance,which is likely to promote its commercial applications.     

粗糙环的同构

基于粗糙群、粗糙子群、粗糙加群、粗糙正规子群、粗糙商群、粗糙环、粗糙子环、粗糙理想,粗糙商环群和粗糙环的同态的基本概念,讨论粗糙环同态和同构的性质,给出粗糙环同构的三个定理,得到了粗糙环的同构的一些性质,同时给出了这些性质和定理的严格证明。进一步补充和完善了代数学上的粗糙集理论．     

基于泛洪请求模型的P2P网络资源搜索方法研究与应用

如何高效地在P2P网络上搜索到资源,依赖于对网络上资源的高效索引和查找方法。本文在分析、研究P2P网络基本搜索方法的基础上,改进了泛洪请求模型搜索方法,并将其应用到企业内部网络资源搜索中,以达到更合理的利用和共享企业内部网络信息资源的目的。     

关于《网页设计》教学的思考

在如今的网络时代,各种类型的网站随处可见。网站设计的地住变得尤为重要,这对高校《网页设计》课程的教学提出了更高的要求。为了达到较好的教学效果,笔者结合教学实践,对《网页设计》课程的教学方法、教学内容、教学评价方式等进行了思考和总结。     

Teacher learning across boundaries: a challenge to the legitimacy of language teachers’ disciplinary knowledge

The legitimate forms of knowledge recognised for language teachers in Chinese universities are differentiated by strong academic boundaries, subject only to disciplinary authority and fashion. Classroom practice on the whole tends not to be informed by research. For many language teachers, a disconnect exists between the academic discipline in which they are situated and the knowledge they apply in the language classroom. The ethnographic study addresses this disconnection. It is based on 3 years of fieldwork, which investigated a case of disciplinary innovation in the English language department of a Chinese university. Two aspects of teacher learning are investigated, namely institutional boundary practice as discursive space for learning and the learning experience of individual teachers within that space. The study reveals that boundary practice can be a source of transformative energy in developing learning cultures within which individuals may experience a process of identity integration.