Surveys.- Linear Semi-infinite Optimization: Recent Advances.- Some Theoretical Aspects of Newton’s Method for Constrained Best Interpolation.- Optimization Methods in Direct and Inverse Scattering.- On Complexity of Stochastic Programming Problems.- Nonlinear Optimization in Modeling Environments.- Supervised Data Classification via Max-min Separability.- A Review of Applications of the Cutting Angle Methods.- Theory and Numerical Methods.- A Numerical Method for Concave Programming Problems.- Convexification and Monotone Optimization.- Generalized Lagrange Multipliers for Nonconvex Directionally Differentiable Programs.- Slice Convergence of Sums of Convex functions in Banach Spaces and Saddle Point Convergence.- Topical Functions and their Properties in a Class of Ordered Banach Spaces.- Applications.- Dynamical Systems Described by Relational Elasticities with Applications.- Impulsive Control of a Sequence of Rumour Processes.- Minimization of the Sum of Minima of Convex Functions and Its Application to Clustering.- Analysis of a Practical Control Policy for Water Storage in Two Connected Dams.