نتایج جستجو برای: qc quay crane rate
تعداد نتایج: 968513 فیلتر نتایج به سال:
Container terminals are facilities where cargo containers are transshipped between different transport vehicles, for onward transportation. They are open systems that carry out a large number of different combinatorial problems that can be solved by means of Artificial Intelligence techniques. In this work, we focus our attention on scheduling a number of incoming vessels by assigning to each a...
This paper addresses the joint quay crane and truck scheduling problem at a container terminal, considering the coordination of the two types of equipment to reduce their idle time between performing two successive tasks. For the unidirectional flow problem with only inbound containers, in which trucks go back to quayside without carrying outbound containers, a mixed-integer linear programming ...
Container unloading/loading at marine container terminals (MCTs) is a key logistic process, to which some research efforts have been addressed by using mathematical programming models formulated in a deterministic-static environment. Vice versa, DES models in a stochastic-dynamic environment are well capable of representing the entire process. Hence, simulation results to be an effective planni...
Maritime transportation plays a crucial role in the international economy. Port container terminals around the world compete to attract more traffic and are forced to offer better quality of service. This entails reducing operating costs and vessel service times. In doing so, one of the most important problems they face is the Berth Allocation and quay Crane Assignment Problem (BACAP). This pro...
In container terminals, one of the most important factors driving the logistic efficiency in the yard is stowage planning for containers designated to be exported. The stowage plan and operations have to meet the requirement of the liner shipping company of ship stability on the one hand, and to ensure the smooth and orderly process of handling containers, deployment and movement of the yard cr...
Structural response of quay crane should take more attention with the growth worldwide logistics demand and size. This paper analyzes mechanism metallic structure induced by trolley traveling. An on-site test has been conducted. The time domain girder acceleration signal shows that main influence traveling on is high-frequency impact passing through hinge point. spectrum frequency vertical vibr...
A bi-objective mathematical model is developed to simultaneously consider the quay crane and yard truck scheduling problems at container terminals. Main real-world assumptions, such as quay cranes with non-crossing constraints, quay cranes’ safety margins and precedence constraints are considered in this model. This integrated approach leads to better efficiency and productivity at container te...
This paper constructs a berth-quay crane capacity planning model with the lowest average daily cost in container terminal, and analyzes influence of number berths quay cranes on terminal operation. The object is to optimize maximize benefits terminal. A steady state probability transfer based Markov chain for constructed by historical time series queuing process. current minimum operation princ...
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