The paper introduces cycles cross ratio, which extends the classic ratio of four points to various settings: conformal geometry, Lie spheres etc. Just like its counterpart is a measure anharmonicity between with respect inversion. It also provides M\"obius invariant distance spheres. Many further properties awaiting their exploration. In abstract framework new can be considered in any projectiv...

The kind invitation that I received from the organisers of this conference to contribute a paper surveying the history of present-day computers (the title suggested was "The Emerging Computer Industry Technology") immediately put me in mind of an earlier invitation. This was one that I received in 1990, out of the blue, from Professor I.B. Cohen, Harvard University's very eminent historian of s...

BACKGROUND After implementation of the PREDICA annual chest X-ray (CXR) screening program in smokers in the general practice setting of Varese-Italy a significant reduction in lung cancer-specific mortality (18 %) was observed. The objective of this study covering July 1997 through December 2006 was to estimate the cost-effectiveness of this intervention. METHODS We examined detailed informat...

An essential mode of contact between general practitioners (GPs) and hospital staff is the referral letter. This must be clear and concise with sufficient information to aid the GP, the consultant and the patient. In order to ensure this, a proposal was made for the use of a structured or standardized referral letter: a form letter. This report shows that form letters were shorter than typed le...

We extend the general solution to the Cauchy problem for the relativistic closed string (Phys. Lett. B404 (1997) 57-65) to the case of open strings attached to Dp-branes, including the cases where the initial data has a knotlike topology. We use this extended solution to derive intrinsic dynamical properties of open and closed relativistic strings attached to Dp-branes. We also study the singul...