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In an inland multi-bridge waterway, vessel behaviors are influenced and restricted by various factors such as people, ships, environment and management etc.; the behaviors are always different with the temporal and spatial change; it is also difficult to use accurate mathematical model to describe the behaviors; and moreover water traffic is not suitable for experiments using real vessels. Hence people...
Research on the waterway traffic flow modelling has been widely used in the formulation of waterway transportation regulations, navigation risk assessment, vessel traffic monitoring and organization. The fluency of one-way waterway transportation is proposed in this paper. By using the model, a simulation system is constructed on the basis of First Come First Served (FCFS) model. Monte Carlo simulations...
By analyzing the module and concrete items of risks in ship pilotage, applying Grey theory analysis, brings forward the Grey Theory Analysis Model in ship pilotage risks analysis, Moreover, fuzzy function is taken in the analysis of relative risk factors, achieving the optimal relational coefficient of piloting risk factors, and finally obtaining the relational degree taxis. As indicated in the computing...
This paper describes a well-designed and calibrated simulation model to solve the design of Ships' routeing system which provide useful insights about complex maritime transportation routes. Real data from shanghai port Vessel Traffic Services Center (VTS) are used as input for evaluating four traffic policies. The simulation model mainly focuses on the transit traffic in the channel. This study provides...
This paper describes a AIS-based model to assist the design of Ships' routeing system which provide useful insights about complex maritime transportation routes. The AIS analysis model mainly focuses on the transit traffic in the Channel. The AIS provides a method to analyze the vessel traffic density, meeting times and speed conditions in the Channels. An architecture of traffic stress model and...
Principal component analysis (PCA) is applied to determine the relative weights of the quantitative evaluation criteria and fuzzy analytic hierarchy process (FAHP) is applied to determine the relative weights of the qualitative evaluation criteria. Finally, the fuzzy Technique for Order Preference by Similarity to Ideal Solution is applied to rank the alternatives. Empirical results show that the...
The flow increasing of civil aviation requires reducing the separation minima to improve the usability of the airspace, and then we attempt to evaluate the safety of the reduced separation minima so as to ensure the flight safety. This article includes a detailed analysis of the collision risk on the parallel route and intersecting route, and emphasizes on building the united collision risk model...
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