Container terminals (CTs) play an important role in the modern logistics and transportation industry. The utilization of automated guided vehicles (AGVs) can be effectively facilitated by reducing their empty running. existing strategies cannot guarantee full load AGVs during because complex constraints container scheduling. This work proposes a double-cycling AGV scheduling model that ensures ...

For the purpose of solving the dynamic demand of the customers in the distribution process, and reducing the distribution costs, a hybrid quantum optimization based on ant colony algorithm is proposed. A mathematical model of the dynamic scheduling problems based on the virtual multi-distribution yard is established. The quantum chromosome is constructed, and the demand of customer is updated t...

This paper investigates the implementation of two types of scheduling algorithm to obtain the best performances of the Single Cart Gantry Crane System (GCS). In this research, Deadline Monotonic Priority Assignment (DMPA) and Earliest Deadline First (EDF) scheduling algorithm are chosen to be implemented. The main ideas of this approach is to find the schedule that more compatible and provide m...

This paper discusses the problem of scheduling quay cranes, the most important equipment in port terminals. A simulation model is developed for evaluating time of quay cranes. Then a dynamic scheduling model using objective programming for quay cranes is developed based on genetic algorithm approach. Finally, numerical experiments on a specific container terminal are made for propose approach. ...

Decision makers must face the dynamism and uncertainty of real-world environments when they need to solve the scheduling problems. Different incidences or breakdowns, for example, initial data could change or some resources could become unavailable, may eventually cause the infeasibility of the obtained schedule. To overcome this issue, a robust model and a proactive approach are presented for ...

This article studies a single-crane scheduling problem in a warehouse where steel coils are stored in two levels. A given set of coils is to be retrieved from their designated places. If a required coil at the lower level is blocked by one or two coils at the upper level, to retrieve it, the blocking coils must be first moved to other positions. The considered problem is to determine the new po...

Workers in ports work with and close proximity of heavy machinery. Quay cranes used for moving containers between ships the dockside yard are one most accident-prone equipment types. For picking up containers, these equipped spreaders, i.e. lifting devices which lowered down on top lock to them mechanically. We concerned here monitoring a quay crane spreader so as make sure that safe clearance ...

The yard operation plays an important role in the daily running of a container terminal. Whether the efficiency of a terminal can be improved depends to a significant extent on the operation of its container yard. In order to analyze the yard operation, this paper builds a 3D simulation model to simulate and visualize the yard operation in a container terminal. First, we study the characteristi...

This work addresses the Quay Crane Scheduling Problem under availability constraints, whose main goal is to determine the work schedules of the quay cranes allocated to a container vessel in order to carry out its transhipment operations (loading and unloading operations). An Estimation of Distribution Algorithm with shaking procedure is proposed to solve it. The position of the tasks and the o...