Itaru Hosomi

WebStage: an active media enhanced World Wide Web browser

The World Wide Web provides us with enormous opportunities to obtain global information. However, conventional browsers are time-intensive, requiring many operations with attendant mental concentration, to view the Web pages. This can ofien discourage people from seeking access to the Web. In this paper, we present an “active” Web browser, named “WebStage”. Unlike conventional browsers, it displays Web pages using a television metaphor to encourage “passive” users to access the Web.

Integrating presence inference into trust management for ubiquitous systems

We propose a new architecture for trust management in ubiquitous environments that deals with RBAC policy, digital signatures, and user presence in a uniform framework. The proposed architecture includes inferences about user presence from incomplete sensor signals based on the hidden Markov model. We implemented a prototype system for a connection service in an office computer network with an RFID tag sensor system.Experimental results show that the proposed architecture is effective in providing both useful and secure services in a ubiquitous environment.