On Polynomial Recursive Sequences.

We study the expressive power of , a nonlinear extension of the well-known class of linear recursive sequences. These sequences arise naturally in the study of nonlinear extensions of weighted automata, where (non)expressiveness results translate to class separations. A typical example of a polynomial recursive sequence is = !.

[The principle of double effect in palliative care].

Caregivers sometimes feel powerless in complex end-of-life situations. Some therapies used to relieve the patient can have the effect of shortening the patient's life. This is why it is essential to explain clearly the principle known as the double effect.

Epidemiology and costs of diabetes treated with insulin in France.

Extrapolating from the results of the 1998 and 2000 French National Sickness Insurance Fund surveys, it can be estimated that at the end of 2002, 3.4% of the French population, i.e.

Sample size calculation should be performed for design accuracy in diagnostic test studies.

Background And Objectives: Guidelines for conducting studies and reading medical literature on diagnostic tests have been published: Requirements for the selection of cases and controls, and for ensuring a correct reference standard are now clarified. Our objective was to provide tables for sample size determination in this context.

Study Design And Setting: In the usual situation, where the prevalence Prev of the disease of interest is <0.