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Our project team developed the experience learning history acquisition system which can record the actions and behaviors of learners to determine their comprehension and learning process in the experience learning. This system uses iPhone, a mobile terminal with various sensors as the terminal to record the behaviors learners. To measure the effect of the system, we conducted experiments in the Workshop...
The modern Web architecture basically follows the Representational State Transfer (REST) style. This style offers the architectural properties necessary to implement the Internet-scale Web. However, most authentication and delegation technologies that rely on session state actually deviate from the REST style. It must be noted, however, that the diversity of these technologies is imperative for the...
Because documents play a central role in real business workflow, analysis of their semantics leads to role analysis in an organization. In this paper, we give semantics of documents by using DTL (document tree logic), which is similar to computational tree logic in program analysis. By using documents and giving semantics in DTL, we can embed results of business workflow in which the sequences of...
Open source software is proved to be very useful in saving time and cost in building software of complex functions. Security is not an exception of this trend. A problem in securityware is the guarantee of its quality on security. In this paper, we analyze 2008 Debian incident on OpenSSL. The vulnerability on pseudo-random number generation is identified apart from the announcement of Debian. Furthermore,...
Today, designing a complex information service system in a working organization has become a challenging problem especially in authentication. An SSO (single sign-on) system is designed to solve this problem. However, it is time and cost consuming to build an SSO that covers legacy software packages because each legacy package mostly has its own authentication engine and it is required to be restructured...
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