The Internet provides an environment where two parties, who are virtually strangers to each other, can make connections and do business together. Before any actual business starts...
In this paper we shall introduce a new electronic payment concept based on the popular direct debit payment model, entitled periodical payments. The direct debit model currently i...
This paper presents an approach that uses special purpose RBAC constraints to base certain access control decisions on context information. In our approach a context constraint is...
Efficient emergency communication is of high practical importance, but has specific challenges: unpredictable local emergency situations harden the establishment of communication...
Stefan G. Weber, Yulian Kalev, Sebastian Ries, Max...