AeroRing: Avionics Full Duplex Ethernet Ring with High Availability and QoS Management

The avionics standard AFDX has been introduced to provide high speed communication for new generation aircraft. However, this switched network is deployed in a full redundant way, which leads to significant quantities of wires. To overcome this limitation, a new avionic communication network, called AeroRing, is proposed in this paper to decrease the wiring weight, while guaranteeing the required performance and safety levels. AeroRing is based on a Gigabit Ethernet technologyand implements a daisy-chain wiring scheme on a Full Duplex ring topology. First, the main features of such a proposal, and particularly the QoS and robustness management, are detailed. Then, numerical results of some Performance Indicators (PI) are illustrated to highlight its ability to guarantee the avionics requirements

Ligament Healing After Anterior Cruciate Ligament Rupture: An Important New Patient Pathway?

Recent studies have shown satisfactory functional results after spontaneous healing of a ruptured anterior cruciate ligament (ACL). However, current literature on this topic may exclude important parting selection, outcome measures, and long-term results. Rehabilitation protocols applied in those studies, as well as objective assessments appear far from the usual gold standard after ACL reconstruction. Ideally, outcomes measures should be based on the same testing procedures that are recommended to clear an athlete to return to sport following ACL reconstruction. There is still a lot to understand in how an injured ACL may heal, and therefore ACL injury management should be individualized to each patient and carefully discussed

Head and thorax elevation prevents the rise of intracranial pressure during extracorporeal resuscitation in swine

Aim: Head and thorax elevation during cardiopulmonary resuscitation improves cerebral hemodynamics and ultimate neurological outcome after cardiac arrest. Its effect during extracorporeal cardiopulmonary resuscitation (E-CPR) is unknown. We tested whether this procedure could improve hemodynamics in swine treated by E-CPR. Methods and Results: Pigs were anesthetized and submitted to 15 minutes of untreated ventricular fibrillation followed by E-CPR. Animals randomly remained in flat position (flat group) or underwent head and thorax elevation since E-CPR institution (head-up group). Electric shocks were delivered after 30 minutes until the return of spontaneous circulation (ROSC). They were followed during 120 minutes after ROSC. After 30 minutes of E-CPR, ROSC was achieved in all animals, with no difference regarding blood pressure, heart rate, and extracorporeal membrane of oxygenation flow among groups. The head-up group had an attenuated increase in ICP as compared with the flat group after cardiac arrest (13 ± 1 vs. 26 ± 2 mm Hg at the end of the follow-up, respectively). Cerebral perfusion pressure tended to be higher in the head-up versus flat group despite not achieving statistical difference (66 ± 1 vs 46 ± 1 mm Hg at the end of the follow-up). Carotid blood flow and cerebral oxygen saturation were not significantly different among groups. Conclusion: During E-CPR, head and thorax elevation prevents ICP increase. Whether it could improve the ultimate neurological outcome in this situation deserves further investigation.The study was supported by grants LIVE-RESP and AREG-SHOCK from Agence Nationale pour la Recherche. Y. Levy was supported by ADEREMVeterinari

Le phasing comme métaphore des dynamiques appropriatives d’un instrument de gestion : le cas de la méthode CARE

International audienc

Le phasing comme métaphore des dynamiques appropriatives : le cas de la méthode CARE

International audienc

Le phasing comme métaphore des dynamiques appropriatives d’un instrument de gestion : le cas de la méthode CARE

International audienc

Le phasing comme métaphore des dynamiques appropriatives : le cas de la méthode CARE

International audienc

Interview with Jacques Richard: Professeur émérite à l’université Paris-Dauphine – PSL

International audienc

Numerical prediction of the noise emitted by an airfoil in a turbulent jet with an aeroacoustic hybrid method

info:eu-repo/semantics/nonPublishe

Numerical issues in the application of an amiet model for spanwise-varying incoming turbulence

info:eu-repo/semantics/publishe