Didier Girard

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For the simple problem of estimatinga vector x 0 from a noisy data vector y = Bx 0 +e where B is a known ill-conditioned mn matrix and e is an unknown`white noise' vector, a classical regularized solution, say x() where > 0 is the regularization parameter, can be satisfactory provided is well chosen. Standard data-based methods for choosing (like(More)
Fractures account for significant morbidity and mortality among the elderly. Commonly, surgical procedures like internal fixation are not exempt of complications (infection, soft-tissue problems). In this study, we examined the use of external fixation (EF) in 28 patients aged more than 60 years with a total of 30 fractures. There were 16 men and 12 women(More)
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