• The entities of the real world are represented in the database in a manner invisible to the user. (Unlike that, in the relational model the entities are represented by the values of keys of some tables; in the network model the entities are represented by record occurrences.) Hereinafter, the user-invisible representations of real-world entities are referred to as "abstract objects". The "con...

Under headings such as ubiquitous, invisible and ambient computing, new approaches to human-computer interfacing are investigated that give primacy to the physical world. It is envisioned that everyday objects and architectural spaces become the interfaces to an otherwise invisible computational system. In this abstract we examine three examples that explore this vision: a wall that is also a n...

Invisible colleges researchers’ networks of communicating academic work are powergenerating actors shaping research fields. A key question concerns the relation between local research communities and their dependence on global actors. A key arena is articles and citations in academic journals. An actor-network-inspired empirical investigation of the geographical origin of articles and reference...

In her article "Echoes of Sophocles's Antigone in Auster's Invisible" Kathleen Waller discusses Paul Auster's Invisible, a novel that explores Deleuze's and Guattari's ontological idea of becoming in a virtual world versus merely living in the actual, physical world. Sexual and immortal desires in the protagonist's virtual world show a near achieved nothingness, or "a space which is unlimited" ...