Increase in Ocular Syphilis Cases at Ophthalmologic Reference Center, France, 2012–2015

We describe the frequency, demographic and clinical features, and visual outcomes of ocular syphilis infections observed during 2012–2015 at a tertiary reference center in Paris, France. Twenty-one cases (29 eyes) were identified. The occurrence of ocular syphilis increased from 1 case in 2012 to 5 cases in 2013, 6 cases in 2014, and 9 cases in 2015 (2.22–25.21/1,000 individual patients/year for the period). Among case-patients, an annual 20%–33% were co-infected with HIV. Seventy-six percent of ocular syphilis infections occurred in men who have sex with men. Seventy-five percent of case-patients had a good final visual outcome (best-corrected visual acuity >0.3 logMAR score). Visual outcome was worse for HIV-positive patients than for HIV-negative patients (p = 0.0139). At follow-up, the best visual outcomes were observed in patients whose mean time from first ocular symptom to consultation was 15 days (SD +19 days)

Experimental Analysis of a Magnetostrictive Sensor

International audienc

A comparison between ABC method and PSO method for Hysteresis Parameter determination

International audienceAccurate analysis and optimal operation of electromagnetic devices can only be predicted by a robust modeling of ferromagnetic materials. In this context, several hysteresis models have been proposed. The Jiles-Atherton model [1] is commonly used, it is among the main studied in the literature. However, it requires robust identification process of five interdependent parameters, based on experimental hysteresis loop. In a recent paper, the artificial bee colony ABC method, inspired by the collective behavior of bees [2] is applied for the identification [3]. The present work deals about comparison between the ABC method and the particle swarm optimization method PSO [4], which is based on the motion of swarms of birds and fishes. The objective of this study is to give performance of both algorithms in computing time, iteration numbers and parameter estimation. Finally, obtained hysteresis loops is compared to experiment data