Abstract In general, a large part of the time is devoted to design and production reliable parts where extensive knowledge required for engineers come up with an optimal solution tooling sheet metal forming processes. Most time, principle trial error used get desired shapes products. This because prediction deformations occurring in elements not available highly dependent on geometry part, tool...

the efficiency and robustness of reliability methods are two important factors in first order reliability method (form). the conjugate choice control (ccc) and directional chaos control method (dcc) were developed to improve the robustness and efficiency of form formula using the stability transformation method. in this paper, the ccc and dcc methods are applied for reliability analysis of a co...

Alexander and Hirschowitz [1] determined the Hilbert function of a generic union of fat points in a projective space when the number of fat points is much bigger than the greatest multiplicity of the fat points. Their method is based on a lemma which determines the limit of a linear system depending on fat points which approach a divisor. On the other hand, Nagata [10], in connection with its c...

H-optimisation (Givens, 1997; 1999a; Givens et al. 1999) and U-optimisation (Witting , 1999)|two methods for optimising Strike Limit Algorithms|are compared on theoretical principles and simple examples. Despite some appealing and innovative features, U-optimisation is not a reliable method in its current formulation. Two new H-optimisation strategies are described which incorporate the most ap...