Smart elasto-magneto-electric （EME） sensors for stress monitoring of steel structures in railway infrastructure

Steel structures are widely used in railway infrastructures. Their stress state is the most important determinant of the safety of these structures. The elasto-magnetic (EM) sensor is the most promising for stress monitoring of in-service steel structures. Nevertheless, the necessity of magnetic excitation to saturation due to the use of a secondary coil for signal detection, keeps from its engineering application. In this paper, a smart elasto-magneto-electric (EME) sensor using magneto-electric (ME) sensing units to take the place of the secondary coil has been exploited for the first time. The ME sensing unit is made of ME laminated composites, which has an ultrahigh ME voltage coefficient and can measure the magnetic induction simply and precisely. Theoretical analysis and characterization experiments firstly conducted on the ME laminated composites showed that the ME sensing units can be applied in the EM sensor for improved performance in stress monitoring. A tension test of a steel bar was carried out to characterize our smart EME sensor and the results showed high accuracy and sensitivity. The present smart EME sensor is a promising tool for stress monitoring of steel structures in railway and other civil infrastructures.     

论大学生"生态化"诚信系统的构建

基于高校大学生群体社会道德文化现状,探讨以量变实现高校大学生群体诚信建设质变的可操作方式、以校园为阵地的"生态化"诚信建设的发展模式以及以社会主义核心价值观为指导思想做好高校大学生思想政治教育的可能性.     

“诗”“歌”中蝴蝶意象研究

蝴蝶是诗词中常见的一种意象,多用来表达自由闲适、爱情新生、美丽感伤等主题。文章探讨古典诗词中的蝴蝶意象,通过对蝴蝶意象的阐释来把握诗人对世界独特的理解,以及特定时代诗歌的某种整体经验。     

“Why Give Up Something That Works So Well?”: Retirement Expectations Among Academic Physicians

For individuals with strong work identities, the decision to retire can be particularly challenging. For academic physicians, retirement is an important personal decision that also has far-reaching implications for the healthcare system. This is because academic physicians are responsible for producing the research from which key medical decisions are made, for training future healthcare providers, and for providing specialized care for patients. For this study, we conducted focus groups with academic physicians from a large research university in Canada and then performed inductive thematic analyses to examine perceptions and concerns about later life career transitions. This study highlights tensions between professional experiences for the next generation of physicians and individual struggles with personal identity. Findings suggest improvements to institutional programs that support flexible, agentive, and respectful retirement transitions will not only be beneficial but necessary as medical and university systems continue to grapple with issues of balanced recruitment and succession.     

国外视频公开课与英语翻转课堂整合学习模式的构建

随着网络信息技术以及国际开放教育的飞速发展,国外名校视频公开课受到国内大学生尤其是英语专业学生的青睐。该文借助国家级大学生创新创业训练计划项目《国外视频公开课在英语专业学生中的使用现状调查与分析》的研究结果,在梳理了调查问卷中与英语语言学习相关的数据基础上,阐述了国外视频公开课与英语课堂教学整合学习模式的作用、意义及特点,并对此种整合学习模式的构建进行了探究分析,以期激发英语专业学生的学习兴趣,提高学习质量,并对深化高校外语课堂教学改革的进一步研究有所启示。     

面向“两性一度”标准的潮汐学课程教学改革

以学生为中心,以提升综合素质能力为导向,依据“两性一度”标准对海洋潮汐学课程进行了教学改革。通过优化教学内容,贯通体现高阶性;以问题为导向,采用启发式教学体现创新性;重视实践训练,科教融合体现挑战度;多方式考核方式融合,优化考评体系,强化能力素质培养,促进课程教学质量和教学效果提升。实践表明,本课程教学改革增强了学生学习的主动性,加深了对课程内容的理解和应用,培养了学生的创新意识和科学思维方法,提升了学生解决复杂问题的综合能力。     

基于信任水平下的虚拟社区用户知识共享行为演化博弈分析

本文通过分析虚拟社区用户知识共享动机,结合演化博弈理论的理论基础,构建了虚拟社区用户之间知识共享的演化博弈模型,以此来分析虚拟社区成员之间知识共享与知识不共享的学习策略过程,同时分析了虚拟社区用户之间两种信任水平下即相互之间信任水平高以及相互之间信任水平低的演化博弈稳定策略。     

当前国内外大学生廉洁教育比较分析研究

大学生廉洁教育是全世界各国公民廉洁教育的有机组成部分。国外大学生廉洁教育经过多年的探索积累,已经形成了以注重学科支撑、依托项目运行、加强价值渗透与社会衔接为特点的教育模式。研究当前我国大学生廉洁教育的现状和问题,结合国外大学生廉洁教育的成功经验和优势特点,提出相应的对策,对优化我国大学生廉洁教育的框架主体和人才培养,具有重要的现实意义。     

近年来我国体育慈善研究述评

近年来,体育慈善研究成为理论界的热点。理论界对体育慈善的内涵、意义、存在问题、对策的研究虽存在诸多问题,但研究日益成熟,概念渐趋明了,作用认识逐步深入,问题研究越来越透彻,对策越来越科学合理等。     

摄影师眼中的雷德温

友城的友好 去年秋天,衢州市摄影师黄祖祥应邀赴衢州市友好城市美国雷德温市,进行了近一个月的艺术交流.黄祖祥在当地举办了个人作品展,与艺术家交流,给大学生上摄影课,但更多的时候是一个人骑着自行车到处拍摄.