Maritime anomaly detection is a key technique in intelligent vessel traffic surveillance systems and implementation of maritime situational awareness. In this paper, we propose a method which combines vessel trajectory clustering and Naïve Bayes classifier to detect anomalous vessel behaviour in the maritime surveillance system. A similarity measurement between vessel trajectories is designed based on the spatial and directional characteristics of Automatic Identification System (AIS) data, then the method of hierarchical and k-medoids clustering are applied to model and learn the typical vessel sailing pattern within harbour waters. The Naïve Bayes classifier of vessel behaviour is built to classify and detect anomalous vessel behaviour. The proposed method has been tested and validated on the vessel trajectories from AIS data within the waters of Xiamen Bay and Chengsanjiao, China. The results indicate that the proposed method is effective and helpful, thus enhancing maritime situational awareness in coastal waters.

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This paper presents a fuzzy set-based approach to the evaluation of information technology (IT) projects. We assume a multi-criteria decision-making framework, where sets of general and domain-specific criteria are used to judge the relative performance of alternative technologies. The methodology was originally developed for DIAS.net, an EU project aiming at the development of the Information Society in insular and isolated regions of Europe. In this paper, we present many aspects of our evaluation framework, including the synthesis of evaluation teams, the assessment of the importance of criteria, the evaluation of the performance of the alternatives and the final ranking and selection of projects. The methodology presented has the innovative feature of embodying techniques of fuzzy sets theory into the classical multi-criteria decision analysis. This combination enables us to handle efficiently the subjectiveness that often characterizes expert judgements on a decision problem. Fuzzy linguistic terms, such as "poor," "fair," "very important," etc. are proposed for assessing the relative merit of alternatives and criteria. The paper concludes by exploring the potentiality of the above methodology in providing a flexible and robust IT evaluation framework.

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New technology comes with benefits for companies that choose to adopt. Additive manufacturing (AM) or 3d printing as it is commonly known has been already implemented in various sectors (industrial and consumer products, medical, automotive, aerospace, etc.). The shipping industry is characterized as conservative to changes. As AM is starting to consolidate in the industry, can offer lessons guiding changes. Application in industries with similar to shipping characteristics (industries with moving assets), reveals the potential of applying it in the shipping industry. The availability of spare parts is important for the vessel maintenance. Additive manufacturing could shorten the space parts supply chain in the maritime industry, since the part could be made near the place it is needed. http://www.transnav.eu the International Journal on Marine Navigation and Safety of Sea Transportation Volume 12 Number 3

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Abstract:The paper explores the rationale of embracing e-Governance models as a mean to improve port policy and decision making towards enhanced port performance and competitiveness. The paper establishes both the significance and the applicability of advanced port e-Governance models, based on e-markets typologies. The devised theoretical framework suggests that within the evolving variation of port structures, e-Governance, public-private interorganisational network models and in particular the e-market paradigm provide a great opportunity towards the 'smart networking' of the plurality of port actors, including public port authorities, terminal service providers, shipping companies, logistics and transportation companies, customs and other third parties.Keywords: port policy; port clusters; port devolution; e-government; Information and Communication Technologies; ICT.Reference to this paper should be made as follows: Lambrou, M.A., Pallis, A.A. and Nikitakos, N.V. (2008) 'Exploring the applicability of electronic markets to port governance', Int.