Henk de Swaan Arons

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Ports provide jetty facilities for ships to load and unload their cargo. Since ship delays are costly, terminal operators attempt to minimize their number and duration. Here, simulation has proved to be a very suitable tool. However, in port simulation models, the impact of the arrival process of ships on the model outcomes tends to be underestimated. This(More)
Modeling requires considerable knowledge of the various stages of the simulation process. The modeler needs to know a great deal of the system to be modeled (domain specific knowledge), the ins and outs of the modeling process itself (the degree of detail of the model) and how to implement the model in a simulation language. Each of these stages would(More)
This paper investigates the impact of arrival processes on the ship handling process. Two types of arrival processes are considered: controlled and uncontrolled. Simulation results show that uncontrolled arrivals of ships perform worst in terms of both ship delays and required storage capacity. Stock-controlled arrivals perform best with regard to large(More)
The limited jetty capacity of ports causes costly ship delays, particularly for large ocean-going vessels. Terminal operators attempt to reduce ship delays both in number and duration but have to take the number of jetties and their functionality and layout as a fact. Ships can arrive according to a schedule, for example based on stock levels, or(More)
The paper describes a simulated prototype system for Swaras recognition using Hidden Markov Models (HMM) and Neural Networks. The goal of the paper is to develop a robust, autonomous system that would eventually enable a person to practice music for swaras set by direct communication with the computer. The system will provide immediate feedback on whether(More)