When the stagnation temperature of the combustion chamber or ambient air increases, the specific heats and their ratio do not remain constant any more, and start to vary with this temperature. The gas remains perfect, except, it will be calorically imperfect and thermally perfect. A new generalized form of the Prandtl Meyer function is developed, by adding the effect of variation of this temper...

We examined the role of chemical signals in sex attraction of pear psylla, Cacopsylla pyricola (Förster), assessing the response of summerform male and female psyllids to maleand female-produced volatile chemicals. Male psyllids were attracted to odors from live females and pentane extracts of females. Extracts of females were as attractive to males as live females, suggesting that the female-p...

Introduction: L'objectif de ce travail etait d'étudier et comparer les paramètres épidémiologiques, cliniques, paracliniques et évolutifs des patientes présentant un HELLP syndrome complet et incomplet. (Hemolysis, Elevated Liver enzymes, Low Platelets count). Méthodes: Une enquête rétrospective sur la période du 1er janvier 2005 au 31octobre 2008 et incluant tous les cas de HELLP syndrome coll...

— We present an algorithm for computing the irreducible unitary representations of a real reductive group G. The Langlands classification, as formulated by Knapp and Zuckerman, exhibits any representation with an invariant Hermitian form as a deformation of a unitary representation from the Plancherel formula. The behavior of these deformations was in part determined in the Kazhdan-Lusztig anal...

A specialized implicit state-space representation is introduced to deal with finite wordlength effects in controller implementations. This specialized implicit form provides a macroscopic description of the algorithm to be implemented. So, it constitutes a unifying framework, allowing to encompass various implementation forms, such as the δ-operator, the ρDirect Form II transposed, observer-bas...

A clinicopathological analysis was made of I3 cases in which the anatomical characteristics of tetralogy of Fallot were associated either with the classicalfeatures of the complete type of persistent common atrioventricular canal (8 cases) or with a forme fruste of the latter (5 cases); that is, cleft tricuspid valve (4 cases) and isolated ostium primum (one). The ratio offemale to male was IO ...

We are concerned with testing procedures for umbrella alternatives in the k-sample location problem without making the assumption that the underlying populations have the same shape. Modifications of the Mack-Wolfe tests are proposed for the cases when the peak of the umbrella is known or unknown. The proposed procedures are exactly distribution-free when the continuous populations have the sam...

Les systèmes mixtes mêlant la formation présentielle sur campus et l'enseignement à distance, semblent se généraliser comme une conséquence de l'ouverture des universités présentielles à la formation à distance. Dans ce contexte, nous avons mis en place et expérimenté une plateforme AVUNET (Algerian Virtual University) de formation ou d'autoformation flexible et à distance aux Technologies de l...