Summary In May 2000 a programme was started in "Máxima Medisch Centrum", a hospital in Eindhoven (The Netherlands). The programme is called "Kwiek & Fit". "Kwiek & Fit" is a revalidation programme after a total hip or total knee replacement, in which the patients revalidate in a group. The programme …

In contemporary image databases one finds many images with the same image content but perturbed by zooming, scaling, rotation etc. For the purpose of image recognition in such databases we employ features based on statistics stemming from fractal transforms gray-scale images. We show how the features …

Retrieval practice enhances long-term retention more than restudying; a phenomenon called the testing effect. The fuzzy trace explanation predicts that a testing effect will already emerge after a short interval when participants are solely provided with semantic cues in the final test. In the present …