10.1371/journal.pone.0180370.g012 Yanling Chu Yanling Chu Xiaoju Zhang Xiaoju Zhang Zhongzhen Yang Zhongzhen Yang Sensitivity of the number of rows to the computation time. Public Library of Science 2017 container terminals Double cycling ship handling operation ship balance constraint efficiency Lagrangian relaxation algorithm QC model Multiple quay cranes scheduling 2017-07-10 17:51:08 Figure https://plos.figshare.com/articles/figure/Sensitivity_of_the_number_of_rows_to_the_computation_time_/5190778 <p>Sensitivity of the number of rows to the computation time.</p>