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Louhichi, Borhen,Aifaoui, Nizar,Hamdi, Mounir,BenAmara, Abdelmajid,Francois, Vincent Society for Computational Design and Engineering 2009 International Journal of CAD/CAM Vol.9 No.1
For several years, researchers have focused on improving the integration of the CAD, CAM and Analysis through a better communication between the various analysis tools. This tendency to integrate the CAD/Analysis and automation of the corresponding processes requires data sharing between the various tasks using an integrated product model. We are interested in this research orientation to CAD/CAM/Analysis integration by rebuilding the CAD model (BREP), starting from the Analysis results (deformed mesh). Because this problem is complex, it requires to be split into several complementary parts. This paper presents an original interoperability process between the CAD and CAE. This approach is based on a new technique of rebuilding the CAD surface model (Nurbs, Bezier, etc.) starting from triangulation (meshed surface) as a main step of the BREP solid model. In our work, the advantages of this approach are identified using a centrifugal pump example.
Recursive kernel estimation of the density under η-weak dependence
Kenza Assia Mezhoud,Zaher Mohdeb,Sana Louhichi 한국통계학회 2014 Journal of the Korean Statistical Society Vol.43 No.3
The purpose of this paper is to study the asymptotic behaviour of the recursive kerneldensity estimator. This estimator was introduced and investigated by Amiri (2010)for independent and α-mixing sequences. In this work, we are interested in η-weakdependence, which is different from the notion of α-mixing. We provide the variance andthe mean squared error of this estimator. The asymptotic normality is also discussed. Asimulation study for two η-dependent models which are not necessarily α-mixing showsthe advantage in time computation of considering the recursive kernel estimation ratherthan the Parzen–Rosenblatt one.