In this article we propose a heuristic algorithm to explore search space trees associated with instances of combinatorial optimization problems. The is based on Monte Carlo tree search, popular in game playing that used and represents the state-of-the-art for number games. Several enhancements are proposed make more suitable context. These exploit structure problem aim efficiently by pruning su...

As container ports become increasingly important to the global supply chain, a growing number of are improving their competencies by consolidating multiple terminal resources internally. In addition, in context energy conservation and emission reduction, measure competitiveness not only terms size, throughput service level, but also low consumption pollution. Therefore, nonlinear mixed-integer ...

In yard-crane scheduling problems, as loading operations take priority over unloading, the delivery sequence of unloading from quaysides to yard is uncertain. The changes may make crane more difficult. As a result, schedules developed statically become suboptimal or even infeasible. this paper, we propose dynamic problem considering uncertain sequences. A mixed-integer linear program assign tas...

At container terminals, many cargo handling processes are interconnected and occur in parallel. Within short time windows, operational decisions need to be made should consider both efficiency equipment utilization. During operation, sources of disturbance and, thus, uncertainty exist. For these reasons, perfectly coordinated can potentially unravel. This study analyzes simulation-based optimiz...

The efficiency of container handling has got great improvement with the usage of the 40ft quay crane and the twin 40 ft yard crane. Reasonable bay planning strategies is necessary to reach the high handing efficiency by the twin 40 ft yard crane. This paper studies both bay planning and row planning for yard bay allocation. The models of bay planning and row planning are created, and the discre...