It is generally expected that the Rio de Janeiro 2016 Olympic and Paralympic Games will bring health and social benefits to their host city and to Brazil. This assumption comes from “common sense”, as a logical conc...It is generally expected that the Rio de Janeiro 2016 Olympic and Paralympic Games will bring health and social benefits to their host city and to Brazil. This assumption comes from “common sense”, as a logical conclusion arising from the fact that host cities “inspire” and stimulate lifestyle changes. Benefits are also expected on tourism, self-image, architecture and the economy of the country as a whole. But are these expectations real and evidence-based? What parts of these “facts” are concrete and which ones are not? This paper suggests available ways of quantifying positive effects of hosting an Olympic Game, and puts the focus of this approach on the Rio de Janeiro 2016 Olympic Games and their true legacy, seeking scientific certainties.展开更多
鉴于区分网络中的标记算法和队列管理对服务公平性有很大影响,进行了基于增强型动态RIO(Enhanced Dynamic RED with In/Out bit,EDRIO)的确保服务下公平性的改进研究.首先从同构聚集流下的不同大小分组来分析各个分组间的公平性,然后从...鉴于区分网络中的标记算法和队列管理对服务公平性有很大影响,进行了基于增强型动态RIO(Enhanced Dynamic RED with In/Out bit,EDRIO)的确保服务下公平性的改进研究.首先从同构聚集流下的不同大小分组来分析各个分组间的公平性,然后从不同聚集流分配不同带宽来研究异构下的公平性.最后从数据包大小、目标速率及聚集流中包含的单流数量等进行性能仿真.实验结果表明,无论在同构还是异构下,基于EDRIO聚集流之间的公平性都比RIO和动态RIO聚集流之间的公平性好,而且该算法具有很好的扩展性.展开更多
文摘It is generally expected that the Rio de Janeiro 2016 Olympic and Paralympic Games will bring health and social benefits to their host city and to Brazil. This assumption comes from “common sense”, as a logical conclusion arising from the fact that host cities “inspire” and stimulate lifestyle changes. Benefits are also expected on tourism, self-image, architecture and the economy of the country as a whole. But are these expectations real and evidence-based? What parts of these “facts” are concrete and which ones are not? This paper suggests available ways of quantifying positive effects of hosting an Olympic Game, and puts the focus of this approach on the Rio de Janeiro 2016 Olympic Games and their true legacy, seeking scientific certainties.
文摘鉴于区分网络中的标记算法和队列管理对服务公平性有很大影响,进行了基于增强型动态RIO(Enhanced Dynamic RED with In/Out bit,EDRIO)的确保服务下公平性的改进研究.首先从同构聚集流下的不同大小分组来分析各个分组间的公平性,然后从不同聚集流分配不同带宽来研究异构下的公平性.最后从数据包大小、目标速率及聚集流中包含的单流数量等进行性能仿真.实验结果表明,无论在同构还是异构下,基于EDRIO聚集流之间的公平性都比RIO和动态RIO聚集流之间的公平性好,而且该算法具有很好的扩展性.
