Agile development practices respect tacit knowledge, make communication more effective, and thus foster the knowledge creation process. However the current agile methods, like XP,...
This paper describes concepts and features of a Web-based system called XRL/flower for carrying out Petri-net based workflows described with XRL (eXchangeable Routing Language). XR...
The ability to limit unsolicited traffic in the Internet is important to defy DDoS attacks and to contain the spread of worms and viruses. The concept of capabilities, which requir...
This paper suggests a new building block for cryptographic protocols and gives two instantiations of it. The concept is to generate two descriptions of the same group: a public des...
Traditional security policies largely focus on access control requirements, which specify who can access what under what circumstances. Besides access control requirements, the av...