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With the wide availability of digital content and proliferation of Web2.0 applications, supporting secure and efficient identification of digital content becomes a more and more important issue. In early 2010, the Open Mobile Alliance (OMA) ratified a new standard known as Secure Content IDentification Mechanism (SCIDM) to facilitate the management of digital content. As the main contributors to the...
In services and cloud computing, processes need to be continually adapted to changing environments and requirements. Undisciplined process adaptation could easily lead to data flow anomalies, e.g., input missing for some activities in the process. In this paper, we study the problem of data-flow-correctness-preserving adaptation and propose three important criteria that can maintain the data flow...
Encryption and watermarking are the most common techniques used to protect copyrighted multimedia content, but both have many limitations. Mediaprinting offers a reproducible and reliable alternative for digital rights management and related applications on the Internet.
One of the major applications of wireless ad hoc networks is to extend the Internet coverage and support pervasive and efficient data dissemination and sharing. To reduce data access cost and delay, caching has been widely used as an important technique. The efficiency of data access in caching systems largely depends on the cost for maintaining cache consistency, which can be high in wireless ad...
We demonstrate MetroNet, which is an application that illustrates collaborative data sharing on the Wide Wide Web. MetroNet has two parts. First, our sensors gather data about pedestrian foot traffic in front of and into stores, which is made available online to shopkeepers. Second, this sensor data can be made public, at the discretion of the shopkeeper, for use by city planners, other shopkeepers,...
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