Vectorial Boolean functions are usually called Substitution Boxes (S-Boxes) and are used as basic component of block ciphers in Cryptography. The ciphers that are Substitution-permutation networks use bijective S-Boxes i.e., Boolean permutations. S-Boxes with low differential uniformity and high nonlinearity are considered as cryptographically strong. In this paper we study some properties of S...

Theories of color-difference measurement provide a quantitative means for predicting whether two lights will be discriminable to an average observer. Consider the following color-measurement hypothesis. Suppose that two lights evoke responses from the color channels that we write as vectors, U and U'. The vector difference dU = U - U' is itself a set of channel responses that will result from t...

Les signes clectrocardiographiques classiques nc sont pas toujours suMisants pour ·le diagnostic de la tachycardie ventriculaire. Nous avons insiste d'une part sur !'importance diagnostique des complex de ca· ptures et d'auters part sur l'import.anre des procedcs nouveux Tels :  1- Enrcgishemcnt du potentiel du faisreau de  2- Stimulation references endocavitaire.

In this article, we propose a Partition ofUnity Refinement (PUR)method to improve the local approximations of elliptic boundary value problems in regions of interest. The PUR method only needs to refine the local meshes and hanging nodes generate no difficulty. The mesh qualities such as uniformity or quasi-uniformity are kept. The advantages of the PUR include its effectiveness and relatively ...

The present study examined the effects of age, gender, and causality on the perceptions of persons with mental retardation. Participants rated individuals with mental retardation using a semantic differential scale with three factors: activity, evaluation, and potency. Target individuals in each scenario varied on the variables of age (8, 20, 45), gender (male, female), and causality of mental ...

Since they were first proposed as a countermeasure against differential power analysis (DPA) and differential electromagnetic analysis (DEMA) in 2006, threshold schemes have attracted a lot of attention from the community concentrating on cryptographic implementations. What makes threshold schemes so attractive from an academic point of view is that they come with an information-theoretic proof...

Recently, a new concept called multiplicative differential cryptanalysis and the corresponding c-differential uniformity were introduced by Ellingsen et al. (2020), then some low functions constructed. In this paper, we further study constructions of perfect c-nonlinear (PcN) power functions. First, give conjecture on all to be PcN over GF(2m). Second, several classes are obtained finite fields...

Dans un service de 36 lits de medicine in­fantile une periode de 18 mois, 33 enfants furent hospitalises pour une affection hematologique maligne: 21 cas de leucemie aigi.ie, 1 cas de leu­cemie myeloide chronique, 2 cas de lymphomes malins, 9 cas de Hodgkin aux differents stades evolutifs.  Aucune complication neurologique ne fut observe chez les malades attaints de Hodgkin. Ia moitie des enfa...