P. D. Conejo

Learn More
PURPOSE To describe the lived experience of nurses surrounding the death of their patients. DESIGN A qualitative phenomenologic approach was used for the interview and analysis framework. Methods to ensure trustworthiness and rigor were incorporated into the design. METHODS Using semistructured interviews and phenomenologic concepts, the investigators(More)
We propose a trust-region algorithm for constrained optimization problems in which the derivatives of the objective function are not available. In each iteration, the objective function is approximated by a model obtained by quadratic interpolation, which is then minimized within the intersection of the feasible set with the trust region. Since the(More)
In this work we propose a trust-region algorithm for the problem of minimizing a function within a convex closed domain. We assume that the objective function is differentiable but no derivatives are available. The algorithm has a very simple structure and allows a great deal of freedom in the choice of the models. Under reasonable assumptions for(More)
  • 1