Enteric pathogens such as Salmonella and Yersinia evolved numerous strategies to survive and proliferate in different environmental reservoirs and mammalian hosts. Deciphering common and pathogen-specific principles for how these bacteria adjust and coordinate spatiotemporal expression of virulence determinants, stress adaptation, and metabolic functions is fundamental to understand microbial p...

In mammals, the gastrointestinal tract is colonized by extremely dense and diverse bacterial communities that are beneficial for health. Maintenance of the complexity and the proper localization and distribution of gut bacteria is of prime importance because when disrupted, the microbial community attacks the host's tissues and causes inflammatory reactions. Our immune system provides the neces...

RÉSUMÉ. Nous proposons dans cet article une nouvelle méthode d’étalonnage extrinsèque pour systèmes de réalité augmentée sur affichages semi-transparents. Cette méthode est appliquée ici à un système de type tablette augmentée composé d’un écran semi-transparent, d’un dispositif de suivi de l’utilisateur et d’un dispositif de localisation par rapport à la scène observée. Cette méthode reste cep...

BACKGROUND Previous research has suggested the clinical profile of individuals with bipolar disorder (BD) differs according to the presence or absence of comorbid migraine. We aimed to determine the clinical characteristics that differentiate individuals with BD with and without comorbid migraine in a large, representative, clinically well-characterised UK sample. METHODS The lifetime clinica...

“The web site is down”. These five words can induce a panic attack in even the most seasoned and level-headed network administrator. Every second of downtime costs money, potentially damages customer relationships, and inhibits new customers. And, to add insult to injury, it is not possible to contact the users to tell them what’s going on because they are nameless, faceless, people located som...

An attempt was made to replicate an earlier finding of a greater sensitivity to fear of criticism by obsessive-compulsives, compared to simple phobics. Two additional comparison groups were included. agoraphobics with panic attacks and social phobics. Results indicated that although obsessivecompulsives did score higher than simple phobics on a measure of fear of criticism, they could not be di...

Dans cet article, nous présentons le projet d'opéra interactif sur CD-ROM Virtualis. Ce projet comporte une dimension scientifique aussi bien qu'artistique. Il nous a donné l'occasion de concevoir une modélisation de la représentation d'opéra en utilisant des formalismes des sciences de l'organisation. De plus, notre réflexion sur l'interaction entre un utilisateur et des contenus opératiques n...

RÉSUMÉ. Le but des études présentées dans cet article est de montrer et de comprendre les différents comportements et les variations de performances système, selon les modes d’accès aux fichiers utilisés (définis par Microsoft) pour la lecture et l’écriture intensive de flux de données de taille importante sur des machines modernes avec des disques récents. Nous traitons dans cet article des ac...

The current research examined prejudice and perceived threat toward Mexican and Arab immigrants/immigration along the U.S./Mexico border. Sample 1 (n = 84) was collected before September 11; attitudes toward Mexican immigrants were assessed. Sample 2 (n = 140) was collected one month after September 11 and Sample 3 (n = 180) was collected one year later; attitudes toward both Mexican and Arab i...