This paper presents ongoing research and current results on the development of flexible access control infrastructures for complex resource provisioning in Grid-based collaborativ...
Yuri Demchenko, Leon Gommans, Cees de Laat, Arie T...
This paper considers the problem of how to establish calculi of approximation spaces. Approximation spaces considered in the context of rough sets were introduced by Zdzislaw Pawla...
Andrzej Skowron, Jaroslaw Stepaniuk, James F. Pete...
This note is a continuation of a paper by the same authors that appeared in 2002 in the same journal. First we extend the method of the previous paper proving an asymptotic formul...
This paper emphasises that most surgical errors can be prevented or intercepted by reducing preventable disruptions inside the operating rooms. It uses information quality concepts...
In this paper, we present weighted/priced timed automata, an extension of timed automaton with costs, and solve several interesting problems on that model. Key words: Weighted/pri...
In this paper we apply the role metaphor to coordination. Roles are used in sociology as a way to structure organizations and to coordinate their behavior. In our model, the featu...
Matteo Baldoni, Guido Boella, Leendert W. N. van d...
This paper begins the development of a theory of what we will call symplectic alternating algebras. They have arisen in the study of 2-Engel groups but seem also to be of interest...
In this paper, we study the representation of W(2) in PG(2, 4) related to a hyperoval. We provide a group-theoretic characterization and some geometric ones.
In this paper we study the sequence (ci)0id for a distance-regular graph. In particular we show that if d 2j and cj = c > 1 then c2j > c holds. Using this we give improveme...