164 research outputs found
Guest Editorial: The Many Facets of Port Development
No full textHydraulic EngineeringCivil Engineering and Geoscience
Comparison study on AIS data of ship traffic behavior
No full textAIS (Automatic Identification System) data provides valuable input parameters in ship traffic simulation models for maritime risk analysis and the prevention of shipping accidents. This article reports on the detailed comparisons of AIS data analysis between a Dutch case and a Chinese case. This analys is focuses
on restricted waterways to support inland waterway simulations, comparing the differences between a narrow waterway in the Netherlands (the Port of Rotterdam) and a wide one in China (wide water way of Yangtze River close to the SuTong Bridge). It is shown that straightforward statistical distributions can be used to characterise lateral position, speed, heading and interval times for different types and sizes of ships. However, the distributions for different characteristics of ship behaviours differ significantly
What's new?: Farewell Address
No full textFarewell addressHydraulic EngineeringCivil Engineering and Geoscience
Nautical traffic simulation with multi-agent system
No full textThis paper describes a microscopic nautical traffic simulation model based on multi-agent system. The ship traffic is produced from the behavior of autonomous agents that represent ships. Especially, we look at the behaviors for collision avoidance in different encountering situations with different local environmental conditions. The behavior of the ships is simulated with a dynamic ship maneuvering model, taking into account the movements in different local circumstances. And we utilize AIS data for input in simulation, model validation, and model verification. Moreover, we use the ODD (Overview, Design concepts, Details) protocol as a framework for the detailed description of the model.Hydraulic EngineeringCivil Engineering and Geoscience
Ports and Terminals
No full textMaritime transport, port functions, principles of integrated port planning, planning and design of a port's water areas, landside planning and design, container terminals.Hydraulic EngineeringCivil Engineering and Geoscience
Layout design for greenfield port Filyos
No full textOn a national level need has arisen for Turkey to realise a new large capacity gateway port. At the Black Sea coast in the province Zonguldak a flat area is available at the delta of the regional river Filyos. According to a previous feasibility study this location is considered optimal for the port. The extent of the captive area is promising. There is expected cargo transport demand from the metropolitan area of Ankara and of the planned local industry. Furthermore, the site conditions and possibility to connect with the hinterland are favourable at Filyos. The objective for the thesis study is to develop a port layout that offers capacity for the forecasted throughput at adequate operational conditions. To guarantee that the requirements with respect to operational conditions are met, several engineering solutions are implemented in the design. The operational conditions for merchant vessels depend to a large extent on the possibility to manoeuvre in the harbour and to load and unload at berth. These conditions are amongst others influenced by the climate of wind, waves and currents. Focus laid in this thesis study is on the wave climate in the harbour and at the berths. A well considered allocation, orientation and shape of the harbour entrance and berths is therefore essential. The other focus is laid on the dry infrastructure. Sufficient space for storage and through transport of cargo is required. Furthermore, advisory is needed with respect to the superstructures and the use of human resources. In order to design the port layout a thorough analysis is carried out in the thesis. The various boundary conditions for the project are analysed and reported. Amongst others, an overview is provided of socio-economic developments, hinterland connections and forecasts of throughput & vessel sizes for various scenarios. Furthermore, physical conditions are analysed, which are primarily based on obtained survey data. Where information about boundary conditions lacked, starting points are used of which a separate overview is provided. For the main requirements of the project an overview is made, which completes the boundary condition analysis. In order to develop the layouts, minimum component dimensions are required in combination with an overview of the preferred shape, orientation and location. For this purpose different design guidelines are followed. In order to derive required dimensions in time phasing of the project is chosen. Three significantly different alternatives are considered in the project including phasing for the medium term (until 2020) and long term (until 2030). These layouts are evaluated on the basis of the following requirements: nautical accessibility and safety, loading and unloading ability at berth, through transport and storage ability, robustness and coast morphological impact. The best layout is selected for further refinement on basis of a qualitative Multi-Criteria Evaluation (MCE) and on an analysis of capital costs. Costs have turned out to be decisive in the selection of the best alternative. The most promising alternative of the previous step is refined with respect to the inner harbour configuration. Different terminal and berth positions and orientations are considered, resulting in two variants of the layout alternative. The layouts are given a quantitative value with the use of an MCE, which are based on model simulations and engineering judgement. A coast morphological model (UNIBEST CL+) and a wave model (SWAN) have been setup for this purpose. Both the resulting values and estimated capital costs of the different layout variants turned out to be close to each other. The layout with the highest ratio of value over cost is selected as best.Ports & waterwaysHydraulic EngineeringCivil Engineering and Geoscience
Ships in an Artificial Force Field: A Multi-agent System for Nautical Traffic and Safety
No full textThe main objective of this research is developing a simulation tool that provides information of detailed ship behavior in a specific navigational environment, on both the ship traffic level and the individual ship level, for safety analysis, decision making, planning of ports and waterways, and design of mitigation measures. In this research, we have developed the Artificial Nautical Traffic System (ANTS) model for maritime safety. The simulation method proposed is able to provide realistic ship traffic behavior by using the agent based model and the artificial force field. The ODD protocol (Overview, Design concepts, Details) has been a great support for detailed description of its methodology, concept, structure, calibration, and validation. Ship AIS data is treated as real world data, therefore the data have been analyzed and utilized. A Dutch case and a Chinese case have been studied to demonstrate model implementation, calibration, validation, and the applications.Safety and Security ScienceTechnology, Policy and Managemen
The Flexible Port
No full textPorts are beset with many uncertainties about their futures. They are confronted with new demands in terms of functions and scales, new external constraints, and changed expectations. The inability to adequately meet these demands can mean costly adaptations for a port, or loss of cargo and competitive position. A plausible reason is that the traditional practices of port planning have remained static in this dynamic world. Traditional port planners do not habitually think in terms of uncertainty, and therefore propose inflexible plans and designs based on deterministic forecasts. Clearly, a new approach is required. Flexibility helps a port to adapt to a wide range of exogenous developments. This is possible at all levels of a port infrastructure system: in its physical infrastructure, its procedures and operations, and the services it provides. This thesis proposes a method called Adaptive Port Planning (APP). Real-life case studies have established that APP can accommodate diverse planning needs and deliver flexible and robust solutions that can better withstand the vagaries of the future. In reality there are barriers, however. Adoption and successful implementation of APP by organizations involved in port planning and design faces many barriers. The conservative port industry, the nature of port projects constrained by legal procedures that limit flexibility, the traditional role assigned to an engineer doing the planning, the organizational culture that leaves little room for new techniques, the extra investments associated with flexible designs, and the fact that innovation is low priority in times of uncertainty, all represent barriers. A ‘strategic planner’ is required: a generalist who can take a holistic approach, understand the tasks of an engineer, economist, manager, and a policymaker, and is able to communicate with the many disciplines in his planning team. He must be able to integrate their knowledge, incorporate uncertainty considerations in standards and projects, seek innovative flexible solutions, and justify them to the authorities.Hydraulic EngineeringCivil Engineering and Geoscience
Book Reviews
No full textAuthor: BASSETT, THOMAS J.; The Peasant Cotton Revolution in West Africa: Ivory Coast 1880-1995; Reviewer: Jerome Coll; Author: KONG, TAT YAN; The Politics of Economic Reform in South Korea: A Fragile Miracle; Reviewer: Chang Kyung-Sup; Author: LIE, JOHN; Han Unbound: The Political Economy of South Korea: Reviewer: Chang Kyung-Sup; Editors: EADE, DEBORAH and LIGTERINGEN, ERNST; Debating Development: NGOs and the Future; Reviewer: Barry Riddell; Editor: MALIK, HAFEEZ; Pakistan: Founders' Aspirations and Today's Realities; Reviewer: Naveed Naqvi; Editor: WYPLOSZ, CHARLES; The Impact of EMU on Europe and the Developing Countries; Reviewer: Juan Paez-Farrell; Author: TRIPP, AILI MARI; Women and Politics in Uganda; Reviewer: May Christine Sengendo; Editor: SCHUURMAN, FRANS J.; Globalization and Development Studies: Challenges for the 21st Century; Reviewer: Ray Kiely; Editors: BAULCH, BOB and HODDINOTT, JOHN; Economic Mobility and Poverty Dynamics in Developing Countries; Reviewer: Christopher B. BarrettReview Books,
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