First, Johnson-Laird (1983, pp. 157, 165) de nes images as models from a particular viewpoint, but this is inessential to the idea of an image. For example, the transformation of an image from an occulocentric frame to an object-centered frame is just one of many transformations it may undergo in being put into more abstract form. It seems arbitrary to treat di erently images in di erent refere...

Useful in a variety of oral surgery procedures, piezosurgery has therapeutic features that include a micrometric cut (precise and secure action to limit tissue damage, especially to osteocytes), a selective cut (affecting mineralized tissues, but not surrounding soft tissues), and a clear surgical site (the result of the cavitation effect created by an irrigation/cooling solution and oscillatin...

Experiments have been designed to investigate hormonal effects on the human prostatic carcinoma cell line LNCaP in the presence of complete foetal calf serum. At physiological concentrations (3.3 x 10M), several derivatives of 17a-methyl-testosterone led to a significant reduction of cell proliferation, inhibition of colony formation in soft agar, change of morphology, induction of a prostate s...

A brief summary of the most important physics results obtained with the SppS collider at CERN is given. The emphasis is put on the limitations due to the fact that both proton and antiproton beams are unpolarised, The main results obtained in 1982-1983 by both experiments, UA1 and UA2, at the SppS collider at CERN, two-jet dominance and W-Z discovery, correspond to an integrated luminosity of a...

Abstraction mappings are one of the major tools used to construct correctness proofs for concurrent algorithms. Several examples are given of situations in which it is useful to allow the abstraction mappings to be muttivalued. The examples involve algorithm optimization, algorithm distribution, and proofs of time bounds.

Is general practice in trouble? The discipline of general practice has developed at a truly remarkable pace in the 56 years since the Foundation of the Royal College of General Practitioners (RCGP). Humour me while I pretend that there is a single aggregated measure of the success of a discipline. And humour me even further while I plot this measure against time, starting in the early part of t...

To go beyond the LEP 1 programme, one can 1. increase the c.m. energy; 2. increase the luminosity, an option technically related to the previous one; 3. increase the sensitivity to possible deviations from the Standard Model by polarizing the beams. These upgrades open up the way to many possibilities for. physics concerning accurate measurements as well as searches for new effects. They also r...