Content Centric Networking: A New Approach to Big Data Distribution

In this paper, we explore network architecture anal key technologies for content-centric networking （CCN）, an emerging networking technology in the big-data era. We descrihe the structure anti operation mechanism of tl CCN node. Then we discuss mobility management, routing strategy, and caching policy in CCN. For better network performance, we propose a probability cache replacement policy that is based on cotent popularity. We also propose and evaluate a probability cache with evicted copy-up decision policy.

Experimenting With International Curricula in Shanghai:Policies,Practice,and a Network Ethnography Analysis

Purpose:Drawing on a study of international schools in Shanghai,this study explores how external experiences and curricula are mobilized as policy tools to inspire local educational innovations and how these experiences are enacted differently by schools.Design/Approach/Methods:Based on a review of policy documents and interviews with school principals,senior management stakeholders,and teachers,this study identifies and compares the typologies of international schools in policy design and practice.Then,by deploying the network ethnography method following three key nodes,this study offers some explanations for the gaps between policy design and enactments.Findings:This study demonstrates the complex relations,interests,and struggles involved in constructing and shaping the meanings of international curricula within local education.The findings show the autonomy of policy networks and the difficulties of‘steering’them in a clear-cut way.Originality/Value:This study is one of the earliest attempts,if not the first,to experiment with the method of network ethnography in the context of China.These findings offer a nuanced account of the complex relations and ad hocery involved in policy learning.

The Impact of Meetings on the Network Governance and Mobility of UN Policy Programs on Environment and Education

Purpose:This paper adds to the understandings of how face-to-face meetings contribute to the network governance and global mobility of United Nations(UN)policy programs on environmental and sustainability education(ESE).Design/Approach/Methods:Data from interviews with 13 international ESE policy leaders were transcribed,coded,and analyzed for key themes related to the research purpose.Findings:The findings indicate that meetings provide an arena for collaboration and influence on UN ESE policy programs,as well as facilitating the impact of the policy programs on UN member country policy.In addition,attending meetings enables the production of network relations that bind ESE policy communities together across distant locations.They are also a venue for the networking labor involved in forging new relationships and facilitating the social learning that supports global policy mobility.Originality/Value:This pilot study enriches understanding of face-to-face meetings as a key vector of policy mobility and a significant factor in the overall network governance of UN organizations and their policy programs.We hope the study contributes to the fields of critical policy studies and ESE,as well as to informing policy actors on how important their participation in meetings can be for the network governance and mobility of UN policy programs.