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. Afin, effet de défauts sur les résidus générés, des défauts sont ajoutés aux données de la matrice Z s aux instants suivants : ? des instants 10à10à 24 pour la variable z s | 1 (intervalle I 1 ), ? des instants 35à35à 49 pour les variables z s | 8 (intervalle I 2 ), ? des instants 60à60à 74 pour les variables z s | 4 et z s | 8 (intervalle I 3 ), ? des instants 85à85à 99

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