Issues on a 2–Dimensional Quadratic Sub–Problem and Its Applications in Nonlinear Programming: Trust–Region Methods (TRMs) and Linesearch Based Methods (LBMs) von Fasano, Giovanni, Piermarini, Christian, Roma, Massimo

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Iterative Grossone-Based Computation of Negative Curvature Directions in Large-Scale Optimization von De Leone, Renato, Fasano, Giovanni, Roma, Massimo, Sergeyev, Yaroslav D.

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Issues on the use of a modified Bunch and Kaufman decomposition for large scale Newton’s equation von Caliciotti, Andrea, Fasano, Giovanni, Potra, Florian, Roma, Massimo

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A Simulation-Based Multiobjective Optimization Approach for Health Care Service Management von Lucidi, Stefano, Maurici, Massimo, Paulon, Luca, Rinaldi, Francesco, Roma, Massimo

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Novel preconditioners based on quasi–Newton updates for nonlinear conjugate gradient methods von Andrea, Caliciotti, Giovanni, Fasano, Massimo, Roma

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Preconditioning strategies for nonlinear conjugate gradient methods, based on quasi-Newton updates von Andrea, Caliciotti, Giovanni, Fasano, Massimo, Roma

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Data and performance profiles applying an adaptive truncation criterion, within linesearch-based truncated Newton methods, in large scale nonconvex optimization von Caliciotti, Andrea, Fasano, Giovanni, Nash, Stephen G., Roma, Massimo

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Managing low–acuity patients in an Emergency Department through simulation–based multiobjective optimization using a neural network metamodel von Boresta, Marco, Giovannelli, Tommaso, Roma, Massimo

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Issues on a 2 - Dimensional Quadratic Sub - Problem and Its Applications in Nonlinear Programming: Trust - Region Methods von Fasano, Giovanni, Piermarini, Christian, Roma, Massimo

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Preconditioned Nonlinear Conjugate Gradient methods based on a modified secant equation von Caliciotti, Andrea, Fasano, Giovanni, Roma, Massimo

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A novel class of approximate inverse preconditioners for large positive definite linear systems in optimization von Fasano, Giovanni, Roma, Massimo

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Preconditioning Newton–Krylov methods in nonconvex large scale optimization von Fasano, Giovanni, Roma, Massimo

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Effect of different patient peak arrivals on an emergency department via discrete event simulation: a case study von Fava, Giordano, Giovannelli, Tommaso, Messedaglia, Mauro, Roma, Massimo

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Solving the Trust-Region Subproblem using the Lanczos Method von Gould, Nicholas I. M., Lucidi, Stefano, Roma, Massimo, Toint, Philippe L.

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A simulation-based optimization approach for the calibration of a discrete event simulation model of an emergency department von De Santis, Alberto, Giovannelli, Tommaso, Lucidi, Stefano, Messedaglia, Mauro, Roma, Massimo

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A Class of Approximate Inverse Preconditioners Based on Krylov-Subspace Methods for Large-Scale Nonconvex Optimization von Al-Baali, Mehiddin, Caliciotti, Andrea, Fasano, Giovanni, Roma, Massimo

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Preconditioning Large Indefinite Linear Systems von Fasano, Giovanni, Roma, Massimo

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Guest editorial von Di Pillo, Gianni, Roma, Massimo

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Determining the optimal piecewise constant approximation for the nonhomogeneous Poisson process rate of Emergency Department patient arrivals von De Santis, Alberto, Giovannelli, Tommaso, Lucidi, Stefano, Messedaglia, Mauro, Roma, Massimo

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A two-objective optimization of ship itineraries for a cruise company von Pillo, Gianni Di, Fabiano, Marcello, Lucidi, Stefano, Roma, Massimo

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