E. H. Koné

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We derive and analyze two equivalent integral formulations for the time-harmonic electromagnetic scattering by a dielectric object. One is a volume integral equation (VIE) with a strongly singular kernel and the other one is a coupled surface-volume system of integral equations with weakly singular kernels. The analysis of the coupled system is based on(More)
BACKGROUND The lack of motivation of health workers to practice in rural areas remains a crucial problem for decision-makers, as it deprives the majority of access to health care. To solve the problem, many countries have implemented health worker retention strategies. However, the development of such strategies requires an understanding of the preferences(More)
This work considers the flow of a fluid containing one disperse substance consisting of small particles that belong to different species differing in size and density. The flow is modelled by combining a multilayer shallow water approach with a polydisperse sedimentation process. This technique allows one to keep information on the vertical distribution of(More)
AIMS To establish the epidemiology of non traumatic gastrointestinal and non urgent affections managed in the department of abdominal surgery service of the University Teaching Hospital of Lomé and to report their post operative period. PATIENTS AND METHODS It was a retrospective study carried out over 5 years. Were included patients aged 15 years and(More)
In this work we present a mutilayer approach to the solution of non-stationnary 3D NavierStokes equations. We use piecewise smooth weak solutions. We approximate the velocity by a piecewise constant (in z) horizontal velocity and a linear (in z) vertical velocity in each layer, possibly discontinuous across layer interfaces. The multilayer approach is(More)
This letter presents some night-time observations of neutral wind variations at F2 layer levels near the dip equator, measured by the Fabry-Perot interferometer set up in 1994 at Korhogo (Ivory Coast, geographic latitude 9.25°N, longitude 355°E, dip latitude )2.5°). Our instrument uses the 630 nm (OD) line to determine radial Doppler velocities of the(More)
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