This work introduces a fuzzy optimization model, which solves in an integrated way the berth allocation problem (BAP) and quay crane (QCAP). The is solved for multiple quays, considering vessels’ imprecise arrival times. model optimizes use of quays. BAP + QCAP, NP-hard (Non-deterministic polynomial-time hardness) combinatorial problem, where decision to assign available quays each vessel adds ...

In this paper we address the design of an observer–controller for a three degrees of freedom overhead crane. We consider a linear model of the crane where the length of the suspending rope is a time–varying parameter. The set of models given by frozen values of the rope length can be reduced to a single time–invariant reference model using suitable time–scalings. We construct a controller and a...

Container terminal (CT) operations are often bottlenecked by slow YC (yard crane) movements. Efficient YC scheduling to reduce the PM waiting time is therefore critical in increasing a CT’s throughput. This paper develops an efficient continuous time MILP model for YC scheduling. The model treats realistic operational constraints such as multiple inter-crane interference, fixed YC separation di...

This research is motivated by the practical pre-steelmaking stage in large iron and steel companies, which have steady heavy demands for steelmaking production process. Our problem studied stage, consists of two steps that are needed each convertor before During step, a necessary transportation must be operated crane. In contrast to classical two-machine flowshop during both machines fixed, the...

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...

One of the primary modes for worldwide trade of goods is maritime transport, which is exposed to rapid growth. In order to handle the increase of the traffic in ports, optimization of port operations has been studied and implemented in the past. In container terminals, significant amount of work has been done in the field of large scale optimization. In published literature, the main focus lies...