نتایج جستجو برای: quay crane

تعداد نتایج: 3776  

Journal: :Journal of Marine Science and Engineering 2023

Maritime transportation plays a critical role in global trade as it accounts for over 80% of all merchandise movement. Given the growing volume maritime freight, is vital to have an efficient system handling ships and cargos at ports. The current first-come-first-serve method insufficient maintaining operational efficiency, especially under complicated conditions such parallel scheduling with d...

Journal: :Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management) 2011

2016
Yiqin Lu Youfang Huang Bin Yang

The key to improve the container terminal efficiency is the integrated optimization of the quay crane (QC) and the yard truck (YT) scheduling, which is normally settled separately and considered in a certain condition in classical literatures. To improve the operation efficiency and simulate the practical operation, a PSO-based integrated QC-YT scheduling optimization model with uncertain facto...

2012

The motivation behind this project is to implement a data stream processing system based on the QUAY system [1]. The prototype called QUAY-FPGA will consist of configurable hardware and software written in the Handel-C language and compiled using the DK design suite [2]. It will be demonstrated that query throughput can be improved by managing memory access patterns and increasing execution par...

2015
Mingjun Ji Wenwen Guo Huiling Zhu Yongzhi Yang

In this paper, we consider the optimization of loading sequence and rehandling strategy in the terminal operation. We present an optimization strategy to minimize the number of rehandles, and establish a mathematical model to integrate the loading sequence and the rehandling strategy under the parallel operation of multi-quay cranes. Furthermore, we give an improved genetic algorithm to solve t...

2015
Abdel Hafez

The University Repository is a digital collection of the research output of the University, available on Open Access. Copyright and Moral Rights for the items on this site are retained by the individual author and/or other copyright owners. Users may access full items free of charge; copies of full text items generally can be reproduced, displayed or performed and given to third parties in any ...

2013
Stéphane Zampelli Yannis Vergados Rowan Van Schaeren Wout Dullaert Birger Raa

This paper considers the combination of berth and crane allocation problems in container terminals. We propose a novel approach based on constraint programming able to model many realistic operational constraints. The costs for berth allocation, crane allocation, time windows, breaks and transition times during gang movements are optimized simultaneously. The model is based on a resource view w...

Journal: :Expert Syst. Appl. 2011
Birger Raa Wout Dullaert Rowan Van Schaeren

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