With the use of the MIntemet+" thinking, vigorously carry out the innovation of the school-enterprise cooperation mode, and improve and promote the quality of the school-enterprise cooperation, which is a major t...With the use of the MIntemet+" thinking, vigorously carry out the innovation of the school-enterprise cooperation mode, and improve and promote the quality of the school-enterprise cooperation, which is a major task faced by all kinds of the private colleges and universities. The school-enterprise cooperation, as a personnel training mode adapting to the development of the times, makes ftill use of the resources of universities and enterprises, which is of great significance to strengthen the mutually beneficial cooperation between schools and enterprises and to train the practical talents. However, problems such as the imperfect equipment of private colleges and universities, the inactive participation of the enterprises in the cooperation, and the lack of communication and exchange between the two sides, still exist. Therefore, it is of great practical significance for the development of the national education and the social progress to put forward the improvement measures and accelerate the development of the efficient and mutually beneficial mode of the school-enterprise cooperation.展开更多
深入了解Internet拓扑的结构性质有利于更好地设计和发展Internet.由于Internet规模巨大,以及获得完整的路由器级Internet拓扑方面的困难,目前无法研究整个路由器级Internet拓扑.因此,分别研究每个国家级或跨国因特网服务供应商(Interne...深入了解Internet拓扑的结构性质有利于更好地设计和发展Internet.由于Internet规模巨大,以及获得完整的路由器级Internet拓扑方面的困难,目前无法研究整个路由器级Internet拓扑.因此,分别研究每个国家级或跨国因特网服务供应商(Internet service provider,简称ISP)网络拓扑结构成为了解Internet拓扑特征的一种可选方法.以中国教育科研网为例,简要描述了多点测量其路由器级拓扑结构的测量结果.分析了该实例拓扑图的节点度分布特征、较大特征值的有关性质以及谱密度分布特征.分析了该实例拓扑图的无符号拉普拉斯谱(SLS)、规格化拉普拉斯谱(NLS)以及群集系数等度量特征.分析结果表明,大型ISP拓扑确实具有某些幂律特征;不同于自治系统级拓扑的情形,对ISP拓扑的节点度补累积分布来说,幂律分布未必拟合得最好;ISP拓扑是一种无标度图,但不符合Barabási-Albert(BA)生长模型;SLS和NLS具有区分不同的路由器级拓扑结构的能力;Internet路由器级拓扑的发展可能遵循一种不同于BA模型的生长过程.展开更多
文摘With the use of the MIntemet+" thinking, vigorously carry out the innovation of the school-enterprise cooperation mode, and improve and promote the quality of the school-enterprise cooperation, which is a major task faced by all kinds of the private colleges and universities. The school-enterprise cooperation, as a personnel training mode adapting to the development of the times, makes ftill use of the resources of universities and enterprises, which is of great significance to strengthen the mutually beneficial cooperation between schools and enterprises and to train the practical talents. However, problems such as the imperfect equipment of private colleges and universities, the inactive participation of the enterprises in the cooperation, and the lack of communication and exchange between the two sides, still exist. Therefore, it is of great practical significance for the development of the national education and the social progress to put forward the improvement measures and accelerate the development of the efficient and mutually beneficial mode of the school-enterprise cooperation.
基金Acknowledgments： This work was supported by National Social Science Foundation of China （13BSH061）, Humanities and Social Sciences Foundation of Ministry of education of China （12YJC 190009）, Shandong Provincial Natural Science Foundation, China （ZR2015CQ010）, Science and Technology Development Project of Shandong Province, China （2013GSFl1802）, Key Laboratory of Adolescent Cyberpsychology and Behavior （Central China Normal University ） （Open subject NO.2012C13） and The Key Discipline Construction Program of 12th Five-Year Plan of Shandong Province （Developmental and Educational Psychology）.
文摘深入了解Internet拓扑的结构性质有利于更好地设计和发展Internet.由于Internet规模巨大,以及获得完整的路由器级Internet拓扑方面的困难,目前无法研究整个路由器级Internet拓扑.因此,分别研究每个国家级或跨国因特网服务供应商(Internet service provider,简称ISP)网络拓扑结构成为了解Internet拓扑特征的一种可选方法.以中国教育科研网为例,简要描述了多点测量其路由器级拓扑结构的测量结果.分析了该实例拓扑图的节点度分布特征、较大特征值的有关性质以及谱密度分布特征.分析了该实例拓扑图的无符号拉普拉斯谱(SLS)、规格化拉普拉斯谱(NLS)以及群集系数等度量特征.分析结果表明,大型ISP拓扑确实具有某些幂律特征;不同于自治系统级拓扑的情形,对ISP拓扑的节点度补累积分布来说,幂律分布未必拟合得最好;ISP拓扑是一种无标度图,但不符合Barabási-Albert(BA)生长模型;SLS和NLS具有区分不同的路由器级拓扑结构的能力;Internet路由器级拓扑的发展可能遵循一种不同于BA模型的生长过程.
