Stephen Davies

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In October 2006, the Chief Medical Officer (CMO) of England asked Professor Sir John Tooke to chair a High Level Group on Clinical Effectiveness in response to the chapter 'Waste not, want not' in the CMOs 2005 annual report 'On the State of the Public Health'. The high level group made recommendations to the CMO to address possible ways forward to improve(More)
People often use powerful tools to manage the documents they encounter, but very rarely to store the mental knowledge they glean from those documents. Popcorn is a <i>personal knowledge base</i>: an experimental interface and database designed to store and retrieve a user's accumulated personal knowledge. It aims to let the user represent information in a(More)
We present results from a nationwide survey of undergraduate computer science departments regarding languages and techniques taught in CS0, CS1, and CS2. This snapshot of 371 schools provides an intriguing look into the state of computing education today in the U.S., quantifying which practices are actually in common use. Among other things, the study(More)
Although many low-income urban areas are highly walkable by conventional measures such as population density or land use mix, chronic diseases related to lack of physical activity are more common among residents of these areas. Disparities in neighborhood conditions may make poor areas less attractive environments for walking, offsetting the advantages of(More)
If non-technical end users are to contribute to the Web of Data as they have to the Web of Documents, they must employ tools that enable them to do so. This challenge is not easy to meet, as formal knowledge representation is a daunting task for the uninitiated. Indeed, we have empirically observed that expressing anything but the most straightforward of(More)
Most Semantic Web query interfaces let the user give an abstract specification of the desired results (perhaps using facets, or a natural language query.) We introduce the Smeagol visual query interface which, by contrast, guides the user from a specific example to a general result set. Users begin the query process with navigation and exploration(More)
We review the literature for evidence of posttraumatic stress disorder that emerges in older adulthood yet is related to earlier life events. Minimum standards necessary to establish the phenomenon are proposed and applied to existing group and case studies. Our findings suggest that the best evidence for this rests with a handful of group studies featuring(More)
Printed in the UK on recycled paper with a minimum HMSO score of 75 First published June 2005 Department of Trade and Industry. CONTENTS The DTI drives our ambition of 'prosperity for all' by working to create the best environment for business success in the UK. We help people and companies become more productive by promoting enterprise, innovation and(More)