Hardware Implementation of a Fault-Tolerant Hopfield Neural Network on FPGAs

This letter presents an FPGA implementation of a fault-tolerant Hopfield NeuralNetwork (HNN). The robustness of this circuit against Single Event Upsets (SEUs) and Single Event Transients (SETs) has been evaluated. Results show the fault tolerance of the proposed design, compared to a previous non fault- tolerant implementation and a solution based on triple modular redundancy (TMR) of a standard HNN design.

Validation de deux méthodes d'évaluation de la douleur aiguë en médecine d'urgence

Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.

Validation de deux méthodes d'évaluation de la douleur aiguë en médecine d'urgence

Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.

Endovascular treatment of multiple anomalous splenic artery aneurysms in a Jehovah witness

Purpose. The present report describes a full endovascular treatment of a multiple anomalous (Splenic artery aneurysms) SAA with combination of coils embolization and proximal occlusion of the splenic artery with the Amplatzer vascular plug. Case report. A 53-year-old Jehovah witness woman presented with multiple aneurysms arising from an anomalous splenic artery. An endovascular treatment was performed by implantation of multiple coils and an Amplatzer Vascular Plug. A CT scan 2 months after the procedure showed complete thrombosis of the aneurysms. Discussion. Aneurysms involving an anomalous or aberrant splenic artery are rarely reported in the literature. Their surgical treatment involves potential difficulties as a consequence of anatomical position and vascular anomalies. A fully endovascular technique can be much more attractive compared to any surgical management, providing an effective and minimally invasive option. Splenic artery - Aberrant splenic artery - Aneurysm - Endovascular treatment - Jehovah witness.

Scanning Laser Optical Tomography Resolves Structural Plasticity during Regeneration in an Insect Brain

Background: Optical Projection Tomography (OPT) is a microscopic technique that generates three dimensional images from whole mount samples the size of which exceeds the maximum focal depth of confocal laser scanning microscopes. As an advancement of conventional emission-OPT, Scanning Laser Optical Tomography (SLOTy) allows simultaneous detection of fluorescence and absorbance with high sensitivity. In the present study, we employ SLOTy in a paradigm of brain plasticity in an insect model system. Methodology: We visualize and quantify volumetric changes in sensory information procession centers in the adult locust, Locusta migratoria. Olfactory receptor neurons, which project from the antenna into the brain, are axotomized by crushing the antennal nerve or ablating the entire antenna. We follow the resulting degeneration and regeneration in the olfactory centers (antennal lobes and mushroom bodies) by measuring their size in reconstructed SLOTy images with respect to the untreated control side. Within three weeks post treatment antennal lobes with ablated antennae lose as much as 60% of their initial volume. In contrast, antennal lobes with crushed antennal nerves initially shrink as well, but regain size back to normal within three weeks. The combined application of transmission-and fluorescence projections of Neurobiotin labeled axotomized fibers confirms that recovery of normal size is restored by regenerated afferents. Remarkably, SLOTy images reveal that degeneration of olfactory receptor axons has a trans-synaptic effect on second order brain centers and leads to size reduction of the mushroom body calyx. Conclusions: This study demonstrates that SLOTy is a suitable method for rapid screening of volumetric plasticity in insect brains and suggests its application also to vertebrate preparations.

Suivi des données acquises par la station de mesure MOLIT en baie de Vilaine entre mars et septembre 2011

La station de mesure Molit entre dans la gamme de produits MAREL. Cette gamme est constituée d’outils développés pour l’observation en continu de paramètres hydrologiques. La bouée Molit a été déployée en baie de Vilaine du 2 mars 2011 au 22 septembre 2011. Cette station est équipée : - d’une sonde multipramètre MP6 qui mesure les paramètres : température, salinité, oxygène dissous, turbidité et fluorescence. Les mesures sont réalisées à 2 niveaux (surface et fond) avec une fréquence de une mesure horaire. - de deux analyseurs de nutriments (Chemini) mesurant les concentrations en nitrate et silicate avec une fréquence de une mesure toutes les 12 heures. Les données acquises par la bouée MOLIT sont transmises par liaison GSM numérique à la station de gestion Marel vilaine où elles sont validées. Un outil de contrôle qualité (OCQ) a été développé pour valider les données : elles peuvent être qualifiées selon 3 états : bon, douteux ou faux. Ils existent différents stades de validation : - stade T0.5 : pré-qualification automatique sur la base de seuils fixés avec 3 états : bon, douteux et faux. - Stade T1 : contrôle visuel et modification manuelle de l’état de qualité - Stade T2 : données corrigées (après étalonnage). Ce document synthétise les informations permettant de qualifier les données au stade T1 : - contrôles in-situ de la sonde multiparamètre réalisés par le laboratoire LER/MPL - historique des opérations de maintenance pendant la période de déploiement.

Qualification des données acquises par la station de mesure MOLIT en baie de Vilaine entre mars et octobre 2012

Un outil de contrôle qualité (OCQ) a été développé pour valider les données : elles peuvent être qualifiées selon 3 états : bon, douteux ou faux. Ils existent différents stades de validation : - stade T0.5 : pré-qualification automatique sur la base de seuils fixés avec 3 états : bon, douteux et faux. - Stade T1 : contrôle visuel et modification manuelle de l’état de qualité - Stade T2 : données corrigées (après étalonnage). Ce document synthétise les informations permettant de qualifier les données au stade T1 et T2 : - contrôles in-situ de la sonde multiparamètre réalisés par le laboratoire LER/MPL, - historique des opérations de maintenance pendant la période de déploiement, - constat de vérification des sondes multiparamètres après campagne.té et la fluorescence, en surface et fond)..

Imaging of activated complement using ultrasmall superparamagnetic iron oxide particles (USPIO) - conjugated vectors: an in vivo in utero non-invasive method to predict placental insufficiency and abnormal fetal brain development.

In the current study, we have developed a magnetic resonance imaging-based method for non-invasive detection of complement activation in placenta and foetal brain in vivo in utero. Using this method, we found that anti-complement C3-targeted ultrasmall superparamagnetic iron oxide (USPIO) nanoparticles bind within the inflamed placenta and foetal brain cortical tissue, causing a shortening of the T2* relaxation time. We used two mouse models of pregnancy complications: a mouse model of obstetrics antiphospholipid syndrome (APS) and a mouse model of preterm birth (PTB). We found that detection of C3 deposition in the placenta in the APS model was associated with placental insufficiency characterised by increased oxidative stress, decreased vascular endothelial growth factor and placental growth factor levels and intrauterine growth restriction. We also found that foetal brain C3 deposition was associated with cortical axonal cytoarchitecture disruption and increased neurodegeneration in the mouse model of APS and in the PTB model. In the APS model, foetuses that showed increased C3 in their brains additionally expressed anxiety-related behaviour after birth. Importantly, USPIO did not affect pregnancy outcomes and liver function in the mother and the offspring, suggesting that this method may be useful for detecting complement activation in vivo in utero and predicting placental insufficiency and abnormal foetal neurodevelopment that leads to neuropsychiatric disorders.

Deux nouvelles espèces Indo-Pacifiques de Stomatopodes

In the Indo-pacific region, a study on Stomatopodes revealed two new species: Squilla carinata and Gonodactilus tweediei. Here the author gives a brief description.

Sur la circulation d'eau a la surface du corps des Stomatopodes

A wide collection of Stomatopods of Indochina was studied from a morphological point of view.

Les procédés de pêche au thon des Viêtnamiens de Nhatrang

Tuna fishing is practiced on the Vietnamese coast between Nha-Trang, Phan-rang-and Bindh-dinh (Qui-nhon). This note is focused on the fishing techniques used in the mentioned area.

Étude descriptive d'un carrelet du Viêtnam

Along the coastal zone of Nha-Trang, Vietnamese fishermen adopted a special net, Cai ró. This machine (probably coming from China), is used in many countries of Southeast Asia. In Vietnam it is widespread from the north to the south with significant changes. The fixed gear described here is the one generally used in the southern part of Central Vietnam and especially in the province of Nha-Trang.

L'Institut océanographique de l'Indochine en 1951

The article deals with a presentation of the Nhatrang Institute of Oceanography in 1951.

Les espèces du genre scylla a Nhatrang (Vietnam)

The species of Scylla found in Vietnam have been studied in relation to the systematic revision made by Estampador, and to establish the distinctive morphological characters of the species. The status of four forms is discussed: Scylla oceanica, Sc. tranquebarica, Sc. serrata, and Sc. serrata var. paramamosain.

Sur quelques espèces rares de Brachyures (Leucosidae) de l'Indo-Pacifique

Since 1949, The Nha Trang Institute of Oceanography has undertaken an inventory of Vietnamese marine fauna with reference to its collection kept in Nha Trang. The collection contains about 250 species of Brachyura. Rare species of particular interest are described in this note.