Advances in metaheuristics : applications in engineering systems Geometric optimization for thermo electric cooler Mean variance mapping optimization for economic dispatch Smart charging optimization of plug in hybrid electric vehicles Three phase separator optimization using bacteria foraging Plant optimization using artificial fish swarm algorithm Multi objective optimization of bioethanol pre treatment process Bioactive compound extraction process optimization Multi objective optimization of cement bonded sand mould system Multi objective optimization of green sand mould product Multi objective optimization of resin bonded sand core properties