engineering optimization problems 1 mathematical optimization 1 Tension/compression spring design problem 1 Welded beam design problem 1 Industrial chemical process problems 1 Process design and synthesis problems 1 Mechanical design problems 1 Power system problems 1 Power electronics: synchronous optimal pulse-width modulation 1 Livestock feed ration optimization 1 Rolling element bearing design problem 1 multi-objectives optimization problems 1 Constrained optimization 1 Stochastic optimization 1 Global optimization 1 Convergence analysis 1 Search space exploration 1 Local search 1 Computational intelligence 1 Robust optimization 1 Benchmark functions 1 Performance analysis 1 Self-adaptation 1 Intelligent optimization 1 Simulations 1 benchmark-problems 1 chemical-process-problems 1 constrained-problems 1 engineering-optimization 1 engineering-problems 1 livestock-feed-ration-optimization 1 mathematical-optimization 1 mechanical-design-problems 1 multi-objectives-optimization-problems 1 power-system-problems 1 real-world-optimization 1 rolling-element-bearing-design-problems 1