Spatio-temporal databases deal with geometries changing over time. In general, geometries do not only change discretely but continuously; hence we are dealing with moving objects....
This paper takes a critical look at current development efforts with learning objects for Web-based e-learning. It points out the limitations of these efforts and argues that they ...
During the pastdecade,object-oriented technology has found its way into programming languages,userinterfaces, databases,operating systems,expert systems,etc. Products labeledasobj...
Abstract—The notion of affordances was proposed by J.J. Gibson, to refer to the action possibilities offered to the organism by its environment. In a previous formalization, affo...