De l’adéquation d’un test informatisé en mathématiques pour élèves à haut potentiel présentant un fléchissement scolaire à l’âge de la puberté.

in FAISCA journal of high abilities (2007), 12(14), 84-105

The cognitive, emotional and motivational inhibition of highly gifted underachievers has become recently a topic of interest for researchers in clinical psychology and psychopathology. In this context the ... [more ▼]

The cognitive, emotional and motivational inhibition of highly gifted underachievers has become recently a topic of interest for researchers in clinical psychology and psychopathology. In this context the authors wanted to test whether a computerized adaptive test in mathematics could help unblocking the achievement motivation of those students. The main features and principles of construction of the test are described. The results of an exploratory study which was undertaken with 123 students belonging to the second class of a secondary school, 35 of which were highly gifted, stretches the interest of the integration of a CAT into the global treatment procedures of the motivational deficit of highly gifted underachievers. [less ▲]

Nuclear receptors in human immune cells: expressions and correlations

in Molecular Immunology (2007), 44

Nuclear receptors (NR) are key modulators of gene transcription. Their activity is ligand induced and modulates a large variety of tissue-specific cellular functions. However, for many NR little is known ... [more ▼]

Nuclear receptors (NR) are key modulators of gene transcription. Their activity is ligand induced and modulates a large variety of tissue-specific cellular functions. However, for many NR little is known about their role in cells of the immune system. In this study, expression patterns and distribution of 24 NR were investigated in human peripheral blood mononuclear cells.We provide the first evidence of the expression of the 12 receptors CAR, CoupTF , CoupTF , FXR, GCNF, HNF4 , PPAR / , PXR, RevErb , TR2, TR4 and TLX in highly purified CD4, CD8, CD19, CD14 cells. The expression profile of RevErb and LXR previously observed in B cell and macrophages, respectively, has been extended to CD4, CD8 and CD14 cells. Except for RAR , which was absence in any of the cells tested, our results suggest an almost ubiquitous expression of the NR in the different cell lineages of the immune system. The expression of CAR, CoupTF , FXR was also confirmed at a protein level and despite conspicuous mRNA levels of HNF4 , only low levels of this receptor were detectable in the nuclear fraction of PBMCs. Expression of the latter receptors was mostly only a fraction (4–20%) of their expression in the thyroid gland, the adrenal gland, the lung or subcutaneous adipose tissue. The Spearman rank order correlation test was performed to examine the correlation in expression between individual nuclear receptor pairs in the four cell types for several donors. Distinct correlation patterns were observed between receptor pairs in the individual cell types. In CD4 T cells four NR, GCNF, PPAR , PPAR 7 and RevErb are perfectly correlated with each other (P≥0.0167). In the other cell types correlations betweenNRpairs were more diverse, but also statistically highly significant. Interestingly, the relative expression level of a number of receptor pairs ranked identical or similar in at least three (CoupTF and PPAR / , CoupTF andHNF4 as well asROR and PXR) or four cell types (CoupTF and CoupTF , PPAR and RevErb ). Despite the variability of NR expression in immune cells, these results suggest that some of the NR may be co-regulated in human immune cells. [less ▲]

Filtrage non linéairede diffusions faiblement bruitées dans le cas d'un système avec bruits corrélés

Scientific Conference (2006, August 31)

Nonlinear filtering with correlated noises in the case of a high signal-to-noise ratio

in International Journal of Pure and Applied Mathematics (2006), 27(3), 305-319

This paper deals with the problem of estimating a state process, the measurements of which are corrupted by an independent but correlated white noise of order ". We derive a finite dimensional filter ... [more ▼]

This paper deals with the problem of estimating a state process, the measurements of which are corrupted by an independent but correlated white noise of order ". We derive a finite dimensional filter, obtained as the solution of a stochastic differential equation which is asymptotically optimal as epsilon tends to 0. [less ▲]

Élèves surdoués en situation d’échec scolaire. Approche multidisciplinaire de la résignation apprise.

Book published by Saint-Paul (2006)

Process Reference Model "IT Grundschutz"

Report (2006)

RSA, pilier de la cryptographie symétrique

Presentation (2005, July 06)

Application de l'art thérapie à quelques problèmes cruciaux de la société luxembourgeoise. Approche clinique et expérimentale. Recherche théorique et méthodologique. 1re partie

Report (2005)

An introduction to the PROSPER package for LaTeX users

Presentation (2004, March 09)

PROSPER is a LaTeX class for writing transparencies. It is written on top of the seminar class by Timothy Van Zandt. It aims at offering an environment for easily creating slides for both presentations ... [more ▼]

PROSPER is a LaTeX class for writing transparencies. It is written on top of the seminar class by Timothy Van Zandt. It aims at offering an environment for easily creating slides for both presentations with an overhead projector and a video projector. Slides prepared for a presentation with a computer and a video projector may integrate animation effects, incremental display, and such. [less ▲]

Les modes opératoires de la cryptographie symétrique

Scientific Conference (2003, May 15)