The Web is causing a revolution in how we represent, retrieve, and process information Its
growth has given us a universally accessible database-but in the form of a largely …

Access control models protect sensitive data from unauthorized disclosure via direct
accesses, however, they fail to prevent indirect accesses. Indirect data disclosure via …

Access control policies for XML typically use regular path expressions such as XPath for
specifying the objects for access-control policies. However such access-control policies are …

The Web is becoming the main information dissemination means in private and public
organizations. As a consequence, several applications at both internet and intranet level …

Around the world as both crime and technology become more prevalent, officials find
themselves relying more and more on video surveillance as a cure-all in the name of public …

Modern day enterprises exhibit a growing trend toward adoption of enterprise computing
services for efficient resource utilization, scalability, and flexibility. These environments are …

Recently, the notion of the Semantic Web has been introduced to define a machine-
interpretable web targeted for automation, integration and reuse of data across different …

The Internet and related technologies have seen tremendous growth in distributed
applications such as medicine, education, e-commerce, and digital libraries. As demand …

Policy specification for securing Web services is fast emerging as a key research area due to
rapid proliferation of Web services in modern day enterprise applications. Whilst the use of …

The advent of commercial observation satellites in the new millennium provides
unprecedented access to timely information, as they produce images of the Earth with the …