In a recent project the Ada language turned out to be not as flexible as we expected it to be. This forced us to model our application in a way that was less elegant, less maintainable and less efficient. In this paper we propose to add a language construct to the language that would enable us to do what we were missing. The extension is based on finite unions with dispatching and can quite eas...

A hyperbolic bration is set of q ?1 hyperbolic quadrics and two lines which together partition the points of PG(3; q). The classical example of a hyperbolic bration comes from a pencil of quadrics; however, several other families are known. In this paper we construct a new family of hyperbolic brations for odd prime powers q. As an application of hyperbolic brations, we note that they can be us...

In this essay I consider Graphical User Interfaces (guis) as instruments that generate spatiality according to the logic of the cartographic representation of reality. By analyzing the history of guis I explore how some latest generation interfaces can partly transform space into place by making use of a three-dimensional representation of reality. This is also made possible by the introduction...

Due to the rapid technological advances in mobile and wireless networking devices, personal computing has moved towards into ad hoc and pervasive environments. Today, the dynamic nature of mobile applications and services have integrated them far more in end-users’ lives. Organizations need an effective way of handling their information system for their employees and customers. Mobile devices s...