Numerical Analysis and Optimization

Al-Baali, M., Caliciotti, A., Fasano, G. and Roma, M: Quasi-Newton Based Preconditioning and Damped Quasi-Newton Schemes, for Nonlinear Conjugate Gradient Methods.- Bagirov, A.M., Sultanova, N., Al Nuaimat, A. and Taheri S: Solving Minimax Problems: Local Smoothing vs Global Smoothing.- Bagherpour, N. and Mahdavi-Amiri, N: Competitive Error in Variables Approach and Algorithms for Finding Positive Definite Solutions of Linear Systems of Matrix Equations.- Duff, I., Lopez, F. and Nakov, S: Sparse Direct Solution on Parallel Computers.- Gay, D. M: Revisiting Expression Representations for Nonlinear AMPL Models.- Hintermuller, M. and Strogies, N: On the Consistency of RK Methods up to Order 3 Applied to the Optimal Control of Scalar Conservation Laws.- Liao, L-Z. and Dai, Y-H: A Time Delay Neural Network Model for Unconstrained Nonconvex Optimization.- Ma, D., Judd, K., Orban, D. and Saunders, M: Stabilized Optimization via an NCL Algorithm.- Mittelmann, H: Combinatorial Optimization Problems in Engineering Applications.- Pani,  A. K. and Kundu, S: Optimal Error Estimates for Semidiscrete Galerkin Approximations to Multi-dimensional Sobolev Equations with Burgers' Type Nonlinearity.- Pisciella, P., Vespucci, M. T., Vigan`o, G., Rossi, M. and Moneta, D: Optimal Power Flow Analysis in Power Dispatch for Distribution Networks.- Potra, F: Equilibria and Weighted Complementarity Problems.- Roos, K: A Mathematical Approach to Living on Sinking Ground.

Mehiddin Al-Baali, Sultan Qaboos University, Department of Mathematics and Statistics, Muscat, Oman.

Lucio Grandinetti, Dipartimento di Ingegneria Informatica, Modellistica, Elettronica e Sistemistica, Calabria University, Arcavacata di Rende, Italy.

Anton Purnama, Sultan Qaboos University, Department of Mathematics and Statistics, Muscat, Oman.