Abstract Web services choreography describes global models of service interactions among a set of participants. For an interaction to be executed, the participants taken part in it...
Today’s development and provision of commercially used Web services has shifted from providing static and predefined functionality to highly configurable services that can be ...
Benjamin Blau, Dirk Neumann, Christof Weinhardt, S...
Among the main issues of future technology-enhanced learning systems, we can mention the following ones: the ability to reuse learning resources (learning objects, tools and servic...
Nominal subtyping (or user-defined subtyping) and structural subtyping each have their own strengths and weaknesses. Nominal subtyping allows programmers to explicitly express de...
The ability for software products to adapt to future changes is essential. Whether the change, the delta, is prefixed to subclasses or postfixed to super classes, class hierarchie...