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Authentication is central to computer security and almost every use of computerised systems. With the explosion of online e-commerce, banking, social web sites and governmental services, the problem of finding secure, usable and efficient authentication systems is more acute than ever. The risks of security failure are obvious, and unusable or inefficient systems additionally risk loss of custo...

Strategic alignment is sometimes used to provide the conceptual underpinnings of causal analyses of business performance, yet our understanding of the notion suffers, in large measure, from imprecise and unusable definitions that rely on vague geometric metaphors. This paper builds on and improves a conceptual framework for strategic alignment (Wang and Ghose, 2006). It applies the framework to...

Loading drops with discrete objects, such as particles and cells, is often necessary when performing chemical and biological assays in microfluidic devices. However, random loading techniques are inefficient, yielding a majority of empty and unusable drops. We use deformable particles that are close packed to insert a controllable number of particles into every drop. This provides a simple, fle...

In contrast to today’s cellular networks mobile ad-hoc networks are characterized by autonomous nodes, which may move arbitrarily without any prior notice. The interconnection patterns among nodes may change dynamically so that links between nodes become unusable. New routes must be considered and maintained using routing protocols. In this paper we will discuss use of node’s position informati...

This paper presents several localisation algorithms based on the Extended Kalman Filter approach and compares their respective performances . The main interest lies in the proposal of two different instrumentations able to replace odometry, unusable on work sites. Results are presented using data obtained on trials carried out at the Centre d'Experimentations Routieres ( CER) in Rouen in collab...

1. ABSTRACT Hidden copyright marks have been proposed as a solution for solving the illegal copying and proof of ownership problems in the context of multimedia objects. We show that the first generation of systems does not fulfil the expectation of users through a number of attacks that enable the information hidden by them to be removed or otherwise rendered unusable. We also propose a possib...