We study the empire colouring problem (as defined by Percy Heawood in 1890) for maps whose dual planar graph is a tree, with empires formed by exactly r countries. We prove that, ...
Abstract. The reliability problem of the quickest path deals with the transmission of a message of sizeσ from a source to a destination with both the minimum end-to-end delay and ...
This paper presents a study of the errors observed when an optical Gigabit Ethernet link is subject to attenuation. We use a set of purpose-built tools which allows us to examine t...
The RC4 stream cipher is the most widely used software based stream cipher. It is based on a secret internal state of N = 256 bytes and two pointers. This paper proposes an efficie...
Abstract. In this paper we discuss the role of labels in transition systems with regard to bisimilarity and model checking problems. We suggest a general reduction from labelled tr...