Volume 22 - 2016-2018

1. Improvement of the class visit in technical education: integration of a mediation tool

Frédéric Ouédraogo ; Daouda Sawadogo ; Solange Traoré ; Olivier Tindano.
The improvement of teacher practice is supported by the class visit. This paper presents the integration of a sharing system of documents as a mediation system tool in the class visit. This sharing system enhances the interaction between the teacher and the pedagogical supervisor when they work on the main pedagogical documents of the class visit. We made an experiment with the service Google Drive with fifteen teachers and three pedagogical supervisors of the technical education. The results of this experiment have shown an improvement of the educational quality of the class visit and better communication between teacher and pedagogical supervisor. It appears from this study that the teacher becomes less stressed and he requests much more help of the pedagogical supervisor than usual.

2. FE approximation for an hybrid Naghdi equations for shells with G 1 -midsurface

Barbouche Refka.
The purpose of this present work is to consider an hybrid formulation of Naghdi’s shell with G1-midsurface of the model already introduced by H. Le Dret in [1] and prove its well-posedness. Here, the displacement and the rotation of the normal to the midsurface are respectively given in Cartesian and local covariant or contravariant basis. This new version enables us, in particular, to approximate by conforming finite elements the solution with less degrees of freedom. Numerical tests are given to illustrate the efficiency of our approach.

3. Ajustement des données pluviométriques à l'aide des splines plaque mince de lissage: Application à la pluviométrie Camerounaise

Madeleine Nyamsi.
In this paper we present a numerical method for drawing a rainfall map. We use thin plate ajustement spline to fit a smooth surface through meteorological data such as rainfall observations. The determination of the ajustement parameters gives rise to the minimization of a multidimensional nonlinear function whose evaluation is very computational intensive. We propose an heuristic approach for the calculation of the ajustement parameters which is cost effective. The proposed method is tested on a set of rainfall observations gathered by the department of national meteorology in Cameroun.

4. Population dynamics modelling : Impact of climate change on tick populations

Leila Khouaja ; Slimane Ben Miled ; Hassan Hbid.
Epidemiology had an important development these last years allowing the resolution of a large number of problems and had good prediction on disease evolution. However, the transmission of several vector-borne diseases is closely connected to environmental protagonists, specially in the parasite-host interaction. Moreover, understanding the disease transmission is related to studying the ecology of all protagonists. These two levels of complexity(epidemiology and ecology) cannot be separated and have to be studied as a whole in a systematic way. Our goal is to understand the interaction of climate change on the evolution of a disease when the vector has ecological niche that depends on physiological state of development. We are particularly interested in tick vector diseases which are serious health problem affecting humans as well as domestic animals in many parts of the world. These infections are transmitted through a bite of an infected tick, and it appears that most of these infections are widely present in some wildlife species.

5. A model for assessing sustainability : A web-based decision support system for predicting and evaluating sustainability

Stéphane Aimé Metchebon Takougang ; Joseph Wethe.
This work presents a web-based tool for predicting and evaluating sustainability with a case study in the framework of water delivery service project (WDSP). A decision support model is built, based on Multi-Criteria Decision Analysis (MCDA) and afterward implemented in Java EE platform for predicting and evaluating on-line the sustainability of WDSPs. An additive value function based assignment model is used to sort a WDSP to one of the ordered categories corresponding to various level of sustainability. The model allows to aggregate socioeconomic, technical, technological and environmental aspects in term of their impact on the sustainability. Knowing the sustainability level of a WDSP can serve as a basis for undertaking an intervention.