On 8 June 2005, Professor Mike Pringle gave the 2005 John Fry Fellowship Lecture, organised by the Nuffield Trust in London. He called it ‘Revalidation of doctors: the credibility challenge’. The audience was, in sections, invited and alert, great and good, knighted and elevated, yet some were fidgety and irritated. At the end, we were all stunned in part, taken aback at times, but on the whole...

IP anycast routes packets to the topologically nearest server according to BGP proximity. UDP-based services (e.g., DNS resolvers and multicast rendez-vous points), which are based on a single request-response scheme, have been historically the first to use IP anycast. While there is a common belief in the Internet measurements community that stateful services cannot run on top of anycast due t...

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There are many reasons why a computer scientist should study logic. For example, logic underlies the reasoning in mathematical statements. In particular, proving that a program meets its specification is argued with the help of logical deductions. We begin by studying propositional logic, which is one of the simplest logical theories. Nevertheless, propositional logic has a large number of appl...

This paper presents QA@LF, the question-answering system developed at LF, INESC-ID. QA@LF follows different strategies according with the question type, and relies strongly on named entity recognition and on the pre-detection of linguistic patterns. Each question type is mapped into a single strategy; however, if no answer is found, the system proceeds and tries to find an answer using one of t...

With Firefox OS, Mozilla is making a serious push for an HTML5-based mobile platform. In order to assuage security concerns over providing hardware access to web applications, Mozilla has introduced a number of mechanisms that make the security landscape of Firefox OS distinct from both the desktop web and other mobile operating systems. From an application security perspective, the two most si...

ABSTRACT The paper describes the Makaton Vocabulary as an alternative communication mode for children and adults with communication and language difficulties. The language program comprises the following components: a core vocabulary based on concepts/items needed to express essential needs and experiences; the use of signs and/or symbols always associated with speech; and a specific structured...

We used event-related potentials (ERPs) to tap the temporal dynamics of first impressions based on face appearance. Participants were asked to evaluate briefly presented faces for trustworthiness and political choice. Behaviorally, participants were better at discriminating faces that were pre-rated as untrustworthy. The ERP results showed that the P100 component was enhanced for untrustworthy ...