Microblog is a new Internet featured product, which has seen a rapid development in recent years. Researchers from different countries are making various technical analyses on microblogging applications. In this study...Microblog is a new Internet featured product, which has seen a rapid development in recent years. Researchers from different countries are making various technical analyses on microblogging applications. In this study, through using the natural language processing(NLP) and data mining, we analyzed the information content transmitted via a microblog, users' social networks and their interactions, and carried out an empirical analysis on the dissemination process of one particular piece of information via Sina Weibo.Based on the result of these analyses, we attempt to develop a better understanding about the rule and mechanism of the informal information flow in microblogging.展开更多
To build a trusted platform based on Trusted Computing Platform Alliance(TCPA)' s recommendation, we analyze the integrity mechanism for such a PC platfoim in this paper.By combinning access control model with inf...To build a trusted platform based on Trusted Computing Platform Alliance(TCPA)' s recommendation, we analyze the integrity mechanism for such a PC platfoim in this paper.By combinning access control model with information flow model, we put forwarda combinedprocess-based lattice model to enforce security This moelel creates a trust chain by which we canmanage a series of processes from a core root of trust module to some other application modules Inthe model, once the trust chain is created andmanaged cor-rectly, the integrity of the computer'shardware and sofware has bctn maintained, so does the confidentiality and authenticity. Moreover, arelevant implementation of the model is explained.展开更多
文摘Microblog is a new Internet featured product, which has seen a rapid development in recent years. Researchers from different countries are making various technical analyses on microblogging applications. In this study, through using the natural language processing(NLP) and data mining, we analyzed the information content transmitted via a microblog, users' social networks and their interactions, and carried out an empirical analysis on the dissemination process of one particular piece of information via Sina Weibo.Based on the result of these analyses, we attempt to develop a better understanding about the rule and mechanism of the informal information flow in microblogging.
基金Supported by the National Natural Science Foun dation of China (90104005) and the National High Technology Re search and Development Program of China ( 863 Program )(2002AA141051)
文摘To build a trusted platform based on Trusted Computing Platform Alliance(TCPA)' s recommendation, we analyze the integrity mechanism for such a PC platfoim in this paper.By combinning access control model with information flow model, we put forwarda combinedprocess-based lattice model to enforce security This moelel creates a trust chain by which we canmanage a series of processes from a core root of trust module to some other application modules Inthe model, once the trust chain is created andmanaged cor-rectly, the integrity of the computer'shardware and sofware has bctn maintained, so does the confidentiality and authenticity. Moreover, arelevant implementation of the model is explained.
