Results 151 to 160 of about 241,599 (189)

Algorithms for Solving the Ship Berthing Problem

2000
The Ship Berthing Problem (SBP) is one of the many problems faced by a port in its daily execution. Ships arriving at the port will have to be assigned specific berthing location based on certain constraints arising from the ship's cargo or physical characteristics. SBP can be solved as a minimization problem, in which the aim is to assign all ships in
Kai Song Goh, Andrew Lim 0001
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The Berthing of a Ship to a Jetty

Journal of the Waterway, Port, Coastal and Ocean Division, 1980
A mathematical model has been developed that describes the behavior of a ship berthing to a jetty (or similar facility) and predicts the fender loads. Use is made of the so-called impulse response function technique that has as the restriction that the ship-fluid system is supposed to be linear and time invariant. This approach enables the inclusion of
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Ant Colony Optimization for the Ship Berthing Problem

1999
Ant Colony Optimization (ACO) is a paradigm that employs a set of cooperating agents to solve functions or obtain good solutions for combinatorial optimization problems. It has previously been applied to the TSP and QAP with encouraging results that demonstrate its potential.
Chia Jim Tong, Hoong Chuin Lau, Andrew Lim 0001   +2 more
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A study on berth maneuvering using ship handling simulator

2009 IEEE International Conference on Systems, Man and Cybernetics, 2009
In this study, training data of berth maneuvering using ship handling simulator was analyzed from the viewpoint of the minimum time berth maneuvering problem. The safety margin of the minimum time berthing problem was derived from the minimum value and the maximum value of the simulator training data of the first class pilot trainee.
Tadatsugi Okazaki, Jun Kayano, Fumitaka Higano   +2 more
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Combining various algorithms to solve the ship berthing problem

Proceedings 12th IEEE Internationals Conference on Tools with Artificial Intelligence. ICTAI 2000, 2002
The Ship Berthing Problem (SBP) belongs to the category of NP-complete problems. In this paper we discuss the methods of representing the SBP with the use of a directed acyclic graph and the use of a acyclic list to represent valid solutions for the SBP. We then propose and investigate the performance of several variants of the randomized local search,
Kai Song Goh, Andrew Lim 0001
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Operation of local positioning system for automatic ship berthing

2017 IEEE East-West Design & Test Symposium (EWDTS), 2017
The article deals with principles and methods of development of local navigation system based on the homodyne signal transforming. Such approach let us distance determination with the help of simplest system design. The block diagrams of system elements are given and the principles of its functioning are described. The use of the proposed block diagram
Ilyas S. Ablyakimov, Igor B. Shirokov
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Review on the Research of Ship Automatic Berthing Control

2021
To fully understand the key problems that the design of under-actuated ship automatic berthing controller under the restricted water area, the uncertain mathematical model and the relatively strong environmental disturbances, considering the requirements of the navigation practice and conduct systematic theoretical exploration and research.
Zhang Qiang, Nam-Kyun Im, Ding Zhongyu, Zhang Meijuan   +3 more
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Determining Propeller Erosion at the Stern of a Berthing Ship

Journal of Waterway, Port, Coastal, and Ocean Engineering, 2013
AbstractThis paper presents the findings from an experimental investigation into the nature and extent of the scouring that occurs when a ship berths in front of a perpendicular quay wall within the confines of a harbor. It examines the interaction between the relative position of the quay wall to the central axis of the ship and the influence of the ...
Ryan, D., Hamill, Gerard
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Ice Free Berths for Loading Ships in the Arctic

OCEANS '80, 1980
We suggest that the buoyancy forces on fresh water at the surface of the sea or immediately below the surface of the ice permit the use of this fresh water as an efficient means of transferring heat energy to the sea-ice, to melt it or to prevent its formation.
H. Sadler, H. Serson
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Queueing at Single-Berth Shipping Terminal

Journal of the Waterways, Harbors and Coastal Engineering Division, 1971
Single-server queueing theory is used to derive average delay, distribution of queue lengths and distribution of delays at a port at which ships arrive randomly but can only be served one at a time. It is shown that this method gives quite different results to a commonly used method which assumes that the number of ships at a port at any time has a ...
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