Accompagnement thérapeutique : le chemin du suivi à long terme [Patient education: the way for long-term follow up]

L'éducation thérapeutique du patient est maintenant parfaitement intégrée dans les soins. Son champ d'application se situe essentiellement dans le domaine des maladies chroniques pour l'acquisition de compétences dans la gestion du traitement, en coopération avec les professionnels. En médecine ambulatoire, patients et soignants se heurtent actuellement aux difficultés du suivi avec sa part d'incertitude, lassitude et de pression économique. La médecine fondée sur les preuves (EBM) et les différents modèles en psychologie de la santé ne nous éclairent que partiellement le chemin. Un nouveau type de démarche réflexive est en train d'émerger. Cette réflexion devrait placer en son centre la notion de relation thérapeutique : entre science et existence. Nous résumons ici ce processus réflexif en cours d'une équipe interdisciplinaire regroupant sciences humaines, art et médecine. Therapeutic education is now perfectly integrated in caring and medicine. Its field of application is primarily in chronic diseases for the acquisition of competences in the management of treatments, in co-operation with health professionals. In ambulatory medicine, patients and health professionals are currently running up against the difficulties of the long-term follow-up with its part of uncertainty, lassitude and economic pressure. EBM and the various models of health psychology light us only partially the way. A new type of reflexive step is emerging. This way of thinking should place in its center the concept of therapeutic relation: between science and being. We summarize here our reflexive process in the course of an interdisciplinary team gathering social sciences, art and medicin

Linearity Properties of the SOBER-t32 Key Loading

In the course of the evaluation of the stream cipher SOBER-t32 submitted to NESSIE, a correlation between initial states has been found for related keys. With high probability some sums of bits of the initial state after key loading do not change their value when a bit of the key is inverted. This holds also for the loading of frame keys. It is shown that the required condition for the frame keys is met very naturally when using counters as frame keys. The linearity properties of the SOBER-t32 key loading are caused by non-optimal diffusion of the non-linear filter function of the cipher

Exploiting Multiples of the Connection Polynomial in Word-Oriented Stream Ciphers

This paper describes some attacks on word-oriented stream ciphers that use a linear feedback shift register #LFSR# and a non-linear #lter. These attacks rely on exploiting linear relationships corresponding to multiples of the connection polynomial that de#ne the LFSR. Keywords: stream ciphers, cryptanalysis, SOBER, t-class, SSC-II.

Turing: A Fast Stream Cipher

This paper proposes the Turing stream cipher. Turing offers up to 256-bit key strength, and is designed for extremely efficient software implementation. It combines an LFSR generator based on that of SOBER[27] with a keyed mixing function reminiscent of a block cipher round. Aspects of the block mixer round have been derived from Rijndael[20], Twofish[21], tc24[23] and SAFER[22]

Turing, a Fast Stream Cipher

Abstract. This paper proposes the Turing stream cipher. Turing offers up to 256-bit key strength, and is designed for extremely efficient software implementation.It combines an LFSR generator based on that of SOBER [21] with a keyed mixing function reminiscent of a block cipher round. Aspects of the block mixer round have been derived from Rijndael [6], Twofish [23], tc24 [24] and SAFER++ [17].