نتایج جستجو برای: yard crane scheduling

تعداد نتایج: 74132  

Journal: :Journal of Marine Science and Engineering 2023

Reasonable scheduling of a train’s loading and unloading equipment can reduce the energy consumption production operations; this has great value for green development terminals. The collaborative model Automated Rail Mounted Gantry (ARMG) Guided Vehicle (AGV) is used to minimize in scenario vertical railway entering port shared storage yard existing between under mixed operation mode “train–shi...

Ali Reza Moazen Jahromi, Amir Saeed Nooramin, Jafar Sayareh, Mansoor Kiani Moghadam,

The time that containerships or transportation trucks spend in marine container terminals for loading and unloading their cargo is a real cost scenario which affects, not only the smooth operation of ports, but also affect the overall cost of container trade. The operators of shipping lines and container terminals are required to realize the importance of this issue and the costs associated wit...

Journal: :Information 2022

This study proposes a digital twin (DT) application framework that integrates deep reinforcement learning (DRL) algorithms for the dynamic scheduling of crane transportation in workshops. DT is used to construct connection between workshop service system, logical simulation environment, 3D visualization model and physical workshop, DRL support core decision scheduling. First, problem constructe...

Journal: :Computers & OR 2009
Lixin Tang Xie Xie Jiyin Liu

Available online 4 January 2009

Journal: :Computers & OR 2013
Su Nguyen Mengjie Zhang Mark Johnston Kay Chen Tan

This section provides detailed results for all sets of benchmark instances introduced by Meisel [1]. The notations of problems characteristics are the same as ones used in Meisel [1]. Loc indicates the distributions of tasks on the vessel, f indicates the the handling rate, d is the precedence density, q is the number of QCs, and s is the safety distance. The signs ∗ and ▲ respectively indicate...

1999
Soren J. Henriksen Liuping Wang C. Goodwin

This paper develops an operator guidance system for an industrial process which involves scheduling ideas from manufacturing systems. The industrial process under study is the converter aisle in a copper smelter. Our objective is to increase throughput by improving utilization of the smelter’s resources. This paper partly addresses this objective by applying scheduling techniques to optimize th...

2013
SangHyeok Han Shafiul Hasan Zhen Lei Mohammed Sadiq Altaf Mohamed Al-Hussein

Selecting the best possible cranes and identifying spatial conflict-free locations on sites can result in productivity and safety improvements for large-scale industrial construction projects. In the current practice, experienced lift engineers select cranes based on the heaviest lift and/or the largest lifting radius of the identified crane. This practice is relatively time-consuming, and opti...

Journal: :journal of modern processes in manufacturing and production 2015
mohammad saadat

this paper proposes a simple but efficient technique to control 3d overhead crane. load musttrack a desired path and not sway more than a reasonable range.the proposed method uses pidcontrol for trolley to track the desired path and fuzzy control compensation to eliminate the loadswing. only the projection of swing angle is applied to design the fuzzy controller. no plantinformation of crane is...

2014
Mosbeh R. Kaloop Mohamed A. Sayed Dookie Kim Eunsung Kim

This study presents a steel container crane movement analysis and assessment based on structural health monitoring (SHM). The accelerometers are used to monitor the dynamic crane behavior and a 3-D finite element model (FEM) was designed to express the static displacement of the crane under the different load cases. The multi-input single-output nonlinear autoregressive neural network with exte...

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