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Nowadays, ubiquitous sensor devices such as mobile phones, laptops, GPSes, etc. allow one to access not only his own data but also others' on cloud servers. To enhance security, data is usually encrypted before sending to the servers. However, making use of others' ones encrypted data without decryption keys is very challenging. In this paper, we suggest a framework that allows users of cloud-based social networks to share their private data in a secure manner. In our framework, every user in a group has his own secret key to encrypt and decrypt data. The key will be revoked if the user leaves the group. Using proxy re-encryption schemes, the framework helps any user be able to access others' data in the same group. [ABSTRACT FROM PUBLISHER]

Considerable research has been devoted to detailing how news framing structures public opinion. As a major rhetoric to present information to the public, framing has the capacity of enlightening the public on the costs and benefits of particular policy choices. However, few studies have examined media framing of international trade and its impact on public opinion. This study attempts to fill this gap in the literature by examining individual responses to pro-trade versus anti-trade and gain versus lose frames. Even though the frames in communication do influence individual preference choices concerning foreign trade policies, these policy options are also subject to powerful influence of individual pre-existing schemas about international trade. These predispositions could help not only redistribute the scarce attentional resources and construe incoming stimuli, but also orientate public opinion on foreign trade policies. ..PAT.-Unpublished Manuscript [ABSTRACT FROM AUTHOR]

China's Internet censorship regime is the most sophisticated effort of its kind in the world, comprising multiple levels of technical control, involving numerous state agencies and thousands of public and private personnel. Even though the Chinese government tightens control of "undesirable" information flow, it does not curb all information but do so selectively, to the most benefit of itself. The patriotism or nationalism is an area that the Chinese government is willing to maneuver. ..PAT.-Unpublished Manuscript [ABSTRACT FROM AUTHOR]