نتایج جستجو برای: yard crane
تعداد نتایج: 5733 فیلتر نتایج به سال:
This paper considers the integrated problem of quay crane assignment, quay crane scheduling, yard location assignment, and vehicle dispatching operations at a container terminal. The main objective is to minimize vessel turnover times and maximize the terminal throughput, which are key economic drivers in terminal operations. Due to their computational complexities, these problems are not optim...
We propose a new hierarchical scheme for yard crane (YC) workload management in container terminals. We also propose time partitioning algorithm and space partition algorithm for deploying YCs to handle the changing job arrival patterns in a row of yard blocks. The main differences between our approach and most of the methods in literature are: (1) Average vehicle job waiting time instead of th...
The problem considered in this paper is to locate storage containers while a set of container storage and retrieval requests are sequenced. Two automated cranes stack and retrieve containers in a single block of a yard. The cranes cannot pass each other and must be separated by a safety distance. Storage containers are initially located at the seaside and landside input/output (I/O) points of t...
As the flagship of Hutchison Port Holdings (HPH), Hongkong International Terminals (HIT) is the busiest container terminal on the planet. HIT receives over 10,000 trucks and 15 vessels a day, about six million twenty-foot equivalent units (TEUs) a year. HIT makes hundreds of operational decisions a minute. HIT’s terminal management system, the productivity plus program (3P), optimizes resources...
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...
Decision support systems and automated planning have become essential for the effective management of seaport container terminals. Due to ever-increasing levels maritime traffic freight transportation, terminals are expected facilitate their intra-yard operations while respecting tighter vessel schedules. Employed models must therefore be capable providing berth allocation decisions which not o...
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