Time-dependent response of laminated isotropic strips with viscoelastic interfaces

INTRODUCTION A traditional premise in the theory of com-posites is the continuity of tractions and displace-ments at constituent interfaces. However, the in-terfaces are generally weaker than the plies inlaminates, which then frequently suffer from failure(such as delamination, interlaminar slip, etc.) due tohigh stress concentration at the interfaces. Beforethe final failure, these interfaces are usuallyweakened and become imperfect due to the emer-gence of microcracks. There are nu…     

中国九节属(茜草科)资料

Two new species and one new combination of the genus Psychotria Linn.from China are described and made , They are P.fluviatilis Chun, P.densa W.C.Chen and P.rubra (Lour.) Poir.var.pilosa (Pitard) W. C. Chen     

新媒体语境下体育新闻传播路径

随着信息技术的不断创新和信息化的加速,媒体发生了前所未有的巨大变革。在媒体发展与融合的新背景下,体育新闻传播具有了新的内容、形式和特质。本文探讨了媒体语境下体育新闻传播的新特点,并对其发展趋势作了详细探讨,以期能为体育新闻传播的更好发展提供一些借鉴。     

新媒体时代话语权社会分配的调整

本文探讨了新媒体时代话语权社会分配的趋势、成因,指出当前话语权重新配置的社会意义,同时也指出话语权转移后的现实问题是:网民在拥有话语权后容易走向话语霸权、为抢占话语高地而丧失诚信、制造虚假舆情、话语权使用极端化以及话语失范等。文章认为政府管理者有必要建立一个良性的话语权分配机制,杜绝上述问题的发生:建立对话机制,防范话语向专制化集聚;促进传统媒体话语与新媒体话语之间的融合、互动;谋求话语表述脚本的社会共写,让话语权在事件中发挥其正面效应;为每一个社会个体提供一定的表述机会,促成社会话语权向下转移。建立这种机制,一方面有利于保障言论权利,另一方面也有利于防范话语权滥用。