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This paper considers a problem of planning short term operations in a bulk terminal faced by port management when making tactical decisions. Ship loading and discharging, cargo stocking, the maintenance and service of facility equipment are regular operations of a bulk terminal which is a subsystem of a sea port the conduct of which is subject to difficult-to-predict or unforeseen influences. The problem that port management encounters in day to day operations looks into making the best possible plan with the scheduled duration of operations/states and transition instants, considering various internal and external factors influencing terminal performance. A state and transition model is used for deriving effective solutions to obtaining the state order and state transition time of a bulk terminal with an objective of minimizing operational costs. The behaviour of the terminal is tested applying the stochastic and deterministic method. [ABSTRACT FROM AUTHOR]

A high-quality management is essential for a successful business of the traffic system. Therefore, the factors affecting on business performance need to be researched, as well as business efficacy indicators and the ways for their improvement need to be explored. In order to manage the traffic system successfully, the setting up of the appropriate model/models representing a simplified real traffic system is required. The aim of this paper is to research into possible problems and difficulties that occur when modelling the traffic system and to find solutions or options for their avoidance. For a better and easier interpretation of the research work done, the example of the port system is selected for illustration. The listed research results can be very easily identified and applied in modelling other traffic systems. [ABSTRACT FROM AUTHOR]