Abstract
ABSTRACT Increasing security and maximizing throughput toward achieving a sustainable seaport is an immediate challenge confronting seaport operators, especially after the terrorist attacks of September 11, 2001. Clearly, introducing container-inspection processes in a seaport will impede the current workflow schedule of container operations and no doubt incur additional management and operation costs, even if the inspection equipment used is highly efficient. Hence, this paper aims to evaluate the impact of imposing container-inspection procedures on container port operations and to optimize port throughput at the same time. The extra handling effort required for security inspection can then be traded off against port efficiency requirements. In our study of a combined transshipment and import–export port, we first propose mathematical formulas to characterize the container operation in such a port. Based on these mathematical formulations, a genetic algorithm is presented to optimize the percentage of containers that are to undergo inspection and the sequence of container movements from yard to outbound vessels, with the objective of minimizing the aggregate costs of delays for outbound vessels.
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