Résumé. Dans cet article, nous montrons comment les techniques de fouilles de données peuvent résoudre efficacement le problème de la réécriture de requêtes en termes de vues en présence de contraintes de valeurs. A partir d’une formalisation du problème de la réécriture dans le cadre de la logique de description ALN (Ov), nous montrons comment ce problème se rattache à un cadre de découverte d...

The univariate discrete moment problem (DMP) is to find the minimum and/or maximum of the expected value of a function of a random variable which has a discrete finite support. The probability distribution is unknown, but some of the moments are given. This problem is an ill-conditioned LP, but it can be solved by the dual method presented in Prékopa (1990). The multivariate discrete moment pro...

In this paper, we describe the Galois dual of rank metric codes in ambient space $F_Q^{n\times m}$ and $F_{Q^m}^n$, where Q=qe. We obtain connections between duality with respect to distinct inner products. Furthermore, for 0 ≤ s < e, introduce concept qsm-dual bases FQm over FQ some conditions about existence qsm-self-dual basis.

Weaving frames have potential applications in wireless sensor networks that require distributed processing of signals under different frames. In this paper, we study some new properties weaving generalized (or g-frames) and orthonormal bases g-orthonormal bases). It is shown a g-frame its dual are woven. The inter-relation optimal bounds universal studied. Further, present characterization g-fr...

BACKGROUND: Ov-CHI-1 is a chitinase specifically expressed in the infective stage larvae of the human filarial parasite Onchocerca volvulus. Evidence has show that it could be a vaccine candidate, however, there is no data available regarding the immunological status of people naturally exposed to infective stage larvae and thus provoked by this antigen. METHOD: We analysed the Ov-CHI-1-specifi...

Photoelectrochemical (PEC) water splitting is a promising approach for renewable solar light conversion. However, surface Fermi level pinning (FLP), caused by trap states, severely restricts the PEC activities. Theoretical calculations indicate subsurface oxygen vacancy (sub-Ov) could release FLP and retain active structure. A series of metal oxide semiconductors with sub-Ov were prepared throu...

Background: Insulin resistance (IR) is frequently associated with hepatitis C virus (HCV) infection, and development of IR can occur early in the course of HCV infection and promote hepatic fibrosis. Aim of the Study: We aimed to assess the impact of IR on the development of oesophageal varices (OV) in HCV-related liver cirrhosis. Subjects and Methods: We enrolled 80 HCV-related liver cirrhosis...

The ovalbumin gene (Ov) gene is responsive to estrogen, glucocorticoid, androgen, and progesterone. In our efforts to characterize the regulation of the Ov gene by steroid hormones, we have repeatedly observed that many vector backbones and promoters are responsive to steroids. In order to determine which vectors are most suitable for these types of analyses, vectors from Promega's pGL3 and new...

Glyoxal, methylglyoxal and other physiological alpha-oxoaldehydes are formed by the lipid peroxidation, glycation and degradation of glycolytic intermediates. They are detoxified enzymically by the glyoxalase system. To investigate the physiological function of glyoxalase I in parasitic organisms, the cDNA for glyoxalase I from the filarial nematode Onchocerca volvulus (designated Ov-GloI) has ...