中学生网络学习调查研究

随着网络教育的发展和教育部“校校通”工程的实施,许多中小学生开始接触或参与网络教育,研究发现在网络学习中大约有三分之一的中学生存在各种各样的学习问题,不能适应网络学习,本文将采用课堂观察和问卷调查的研究方式,来探讨这一问题。     

高师“教育技术公共课”网络课程的设计开发与应用效果剖析

网络课程的设计开发逐渐趋向成熟,但还需要更加科学,有效的建设,本文就高师“教育技术公共课”网络课程的设计开发过程介绍了本课程建设的理论依托,双面结构框架以及开发的关键技术,并对该网络课程的运用效果进行了实验性的剖析。     

基于三方架构的存储备份系统设计与实现

数据是信息的符号,数据的价值取决于信息的价值。由于越来越多的有价值的关键信息转变为数据,数据的价值也越来越高,保证数据的安全及可用性越来越重要。在介绍了数据备份基础知识和备份的几种模型后,提出了一种基于三方架构的存储备份系统,并给出了其设计与实现。     

图书馆信息资源建设宏观与微观的把握

从阐述图书馆信息资源建设入手,提出了搞好图书馆信息资源建设的宏观举措,并指出要在微观上切实促进馆藏文献资源的开发利用。参考文献9。     

网络环境下如何做好纸本科技期刊阅读服务

本文主要论述了网络环境下,纸本科技期刊生存状态受到冲击,并从三个方面提出了改进期刊的服务措施。     

基于共轭分析的网络对抗效能评估

本文为了探讨影响网络对抗效能评估的众多因素,利用可拓学中的共轭分析进行研究。介绍了共轭分析原理中的虚实、软硬、潜显和负正这四对概念,并利用这四对概念分别从网络对抗系统的物质性、系统性、动态性和对立性这四个方面分析影响其效能的各种因素,为网络对抗效能评估提供了新的思路。     

Core–periphery structures in national higher education systems. A cross-country analysis using interlinking data

This paper presents a comparative analysis of the structure of national higher education networks in six European countries using interlinking data. We show that national HE systems display a common core–periphery structure, which we explain by the lasting reputational differences in science, as well as the process of expansion and integration of HE systems. Furthermore, we demonstrate that centrality in national networks (coreness) is associated with organizational characteristics, reflecting that interlinking is motivated by access to resources and the status of the organizations concerned, and that national policies impact network structures by influencing the level of inequality in the distribution of resources and status. Finally, we show that, as an outcome of the core–periphery structure, the strength of ties between two HEIs is largely determined by their individual coreness, while the impact of distance is too small-scale to alter the network structure generated by organizational attributes.     

Mathematical properties of Q-measures

Q-measures are network indicators that gauge a node's brokerage role between different groups in the network. Previous studies have focused on their definition for different network types and their practical application. Little attention has, however, been paid to their theoretical and mathematical characterization. In this article we contribute to a better understanding of Q-measures by studying some of their mathematical properties in the context of unweighted, undirected networks. An external Q-measure complementing the previously defined local and global Q-measure is introduced. We prove a number of relations between the values of the global, the local and the external Q-measure and betweenness centrality, and show how the global Q-measure can be rewritten as a convex decomposition of the local and external Q-measures. Furthermore, we formally characterize when Q-measures obtain their maximal value. It turns out that this is only possible in a limited number of very specific circumstances.     

计算机网络与信息安全

随着计算机技术的飞速发展,信息网络已经对社会发展产生重要影响。信息网络已涉及国家的政府、军事、科技、文教等多个领域,其中存储和加工处理的信息非常重要。     

网络硬件系统建设中涉及的几个主要问题

结合自己网络开发的经验 ,从当前网络技术、拓扑结构的选择、存贮技术的发展、网络容错以及通信技术的发展与应用等几个方面浅析网络硬件系统建设中涉及的几个主要问题