Results 91 to 100 of about 157 (125)
A conceptual modeling framework for discrete event simulation using hierarchical control structures.
Simul Model Pract Theory, 2015 Furian N +4 more
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Optimization of berth allocation and tugboat scheduling under uncertainty
Port terminals face increasing pressure to optimize resource utilization under unpredictable operational conditions. This thesis addresses the integrated scheduling problem of continuous berth allocation and tugboat assignment, a coordination challenge that remains underexplored in stochastic contexts.
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Tugboat scheduling for container ports
Transportation Research, Part E: Logistics and Transportation Review, 2020Abstract Container ports play an important role in global logistics and supply chains by providing container handling services for container ships. In a port, container ships usually need the assistance of tugboats in order to undergo berthing, shifting, and unberthing movements.
Xiaoyang Wei, Shuai Jia, Kok Choon Tan
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Tugboat scheduling under ship arrival and tugging process time uncertainty
Transportation Research, Part E: Logistics and Transportation Review, 2020Abstract This study addresses an interesting tugboat scheduling problem considering uncertainty in both container ship arrival and tugging process times for large container ports. The uncertain ship arrival and tugging process times are formulated as a finite set of discrete scenarios that can be generated from historical port traffic data.
Liujiang Kang +2 more
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Tugboat Scheduling Problem Based on Trust-Based Ant Colony Optimization
Lecture Notes in Computer Science, 2012Tugboat scheduling is an important decision problem in container terminals. This paper proposes a mathematic model of tugboat scheduling and applies an improved Trust-based Ant Colony Optimization method to get the best scheduling plan. The concept of trust value is considered as heuristic information to affect path selecting and the pheromone ...
Su Wang 0005 +3 more
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Hybrid Evolutionary Strategy Optimization for Port Tugboat Operation Scheduling
2009 Third International Symposium on Intelligent Information Technology Application, 2009Tugboat operation is an important part of port operation system, and efficient tugboat operation scheduling and planning has a direct and significant impact on which vessels come in or out of the port in time. It exits in the tugboat operation that more than one tugboat simultaneously provide one vessel with the service of tug at the same moment of ...
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Vessel scheduling under different tugboat allocation policies
Computers and Industrial Engineering, 2023Kaan Ozbay, Ali Diabat, Omar Abou Kasm
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Scheduling Tugboats in a Seaport
Transportation Science, 2021In a seaport, vessels need the assistance of tugboats when mooring and unmooring. Tugboats assist a vessel by pushing or towing the vessel’s tug points, and the vessel can moor (or unmoor) successfully only if each of the tug points is operated with sufficient horsepower.
Shuai Jia +3 more
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A Bi-objective green tugboat scheduling problem with the tidal port time windows
Transportation Research, Part D: Transport and Environment, 2022Huiling Zhong
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