IPv6: The next generation Internet Protocol

IPv4, the workhorse protocol of the currently popular TCP/ IP protocol suite, is fast becoming obsolete. The exponential growth of the Internet is the main reason that has required the creation of the next generation of Internet Protocol-IPv6. IPv6 is much more flexible and promises to take care of the address space and security issues in the foreseeable future. Part 1 of the paper lays the foundation of the various issues involved in designing the Internet Protocol and motivates the need for an upgraded version of this protocol.     

热释电材料的研究现状分析

本文分析了热释电材料的研究现状 ,对比了各种材料的优缺点并着重阐述了PT系列材料的研究方向、方法、研究进展及存在问题。最后 ,对今后的研究提出了自己的看法     

Practical Applications as a Source of Credibility: A Comparison of Three Fields of Dutch Academic Chemistry

In many Western science systems, funding structures increasingly stimulate academic research to contribute to practical applications, but at the same time the rise of bibliometric performance assessments have strengthened the pressure on academics to conduct excellent basic research that can be published in scholarly literature. We analyze the interplay between these two developments in a set of three case studies of fields of chemistry in the Netherlands. First, we describe how the conditions under which academic chemists work have changed since 1975. Second, we investigate whether practical applications have become a source of credibility for individual researchers. Indeed, this turns out to be the case in catalysis, where connecting with industrial applications helps in many steps of the credibility cycle. Practical applications yield much less credibility in environmental chemistry, where application-oriented research agendas help to acquire funding, but not to publish prestigious papers or to earn peer recognition. In biochemistry practical applications hardly help in gaining credibility, as this field is still strongly oriented at fundamental questions. The differences between the fields can be explained by the presence or absence of powerful upstream end-users, who can afford to invest in academic research with promising long term benefits.     

关于素质教育的几点思考

面对日新月异的、发展的世界,高等院校应该高度重视和开展素质教育,不断提高大学生的素质。本文重点从社会需要、素质教育的重要性及如何开展素质教育等方面进行了有益的思考和探讨。     

重读毛泽东《体育之研究》的科学启发

本文采用文献分析法和历史比较法,研读了毛泽东的《体育之研究》,以求反映２０世纪毛泽东对现代体育的认识和对中西体育文化的态度。     

浅谈现代健美操的健、力、美

本文从编排和训练的角度,详细论述了健美操的三个核心要素——健、力、美,并指出了影响健美操效果的各种因素,以及健美操中音乐的“灵魂作用”、操与舞的关系、形体美与心灵美的关系等等,为广大健美操工作者及爱好者提供了健美操编排及训练的理论依据。     

运用“体育微格教学”对学生进行教学技能培养

“体育微格教学”是微格教学的一个分支,它是培养和训练体育专业学生掌握某种教学技能、技巧的一种小型教学活动。本文针对我院部分学生教学技能掌握运用现状对“体育微格教学”的运用进行了探讨。