322 research outputs found

    A laboratory method to evaluate Pseudocercospora musae (teleomorph: Mycosphaerella musicola) sensitivity to fungicides

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    Introduction. Le protocole vise à détecter et évaluer des variations de sensibilité dans des populations de Pseudocercospora musae (téléomorphe : Mycosphaerella musicola) vis à vis de fongicides qui sont utilisés pour contrôler la maladie de Sigatoka chez le bananier. Le principe, les principaux avantages, le matériel végétal de départ, le temps nécessaire et les résultats attendus de la méthode sont présentés. Matériel et méthodes. Le matériel de laboratoire nécessaire et le détail des sept étapes du protocole réalisées sur quatre jours d'expérimentation sont décrits. Résultats. Le protocole aboutit à l'observation de la germination de conidies (aspect ou croissance du tube germinatif) de P. musae selon la sensibilité aux fongicides. (Résumé d'auteur

    Using Premia and Nsp for Constructing a Risk Management Benchmark for Testing Parallel Architecture

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    International audienceFinancial institutions have massive computations to carry out overnight which are very demanding in terms of the consumed CPU. The challenge is to price many different products on a cluster-like architecture. We have used the Premia software to valuate the financial derivatives. In this work, we explain how Premia can be embedded into Nsp, a scientific software like Matlab, to provide a powerful tool to valuate a whole portfolio. Finally, we have integrated an MPI toolbox into Nsp to enable to use Premia to solve a bunch of pricing problems on a cluster. This unified framework can then be used to test different parallel architectures

    Using Premia and Nsp for Constructing a Risk Management Benchmark for Testing Parallel Architecture

    Get PDF
    Financial institutions have massive computations to carry out overnight which are very demanding in terms of the consumed CPU. The challenge is to price many different products on a cluster-like architecture. We have used the Premia software to valuate the financial derivatives. In this work, we explain how Premia can be embedded into Nsp, a scientific software like Matlab, to provide a powerful tool to valuate a whole portfolio. Finally, we have integrated an MPI toolbox into Nsp to enable to use Premia to solve a bunch of pricing problems on a cluster. This unified framework can then be used to test different parallel architectures.Premia;Mpi;Nsp
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