Portuguese national policies for forests were developed considering related themes such as climate change, forest health, fire and the protective functions of forests. In Portugal, maritime pine forest is mainly private non-industrial and its area is in decline. Therefore, the aim of this study was two-fold: first, to assess maritime pine forest characteristics over a 19-year period; second, to...

Despite their use for modeling traffic in ports and regional waters, multi-agent simulations have not yet been applied to model maritime traffic on a global scale. We therefore propose a fully agent-based, data-driven model of global maritime traffic, focusing primarily on modeling transit through piracy-affected waters. The model employs finite state machines to represent the behavior of sever...

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Maria Hänninen Name of the doctoral dissertation Bayesian network modeling of potential patterns in maritime safety performance Publisher School of Engineering Unit Department of Applied Mechanics Series Aalto University publication series DOCTORAL DISSERTATIONS 13/2015 Field of research Marine Technology and Naval Architectur...

Global Maritime Distress Safety System (GMDSS) is one of the best and most efficient systems for emergency. The systems have been developed to provide mariners global communications and locating network. This system includes land stations for all INMARSAT services to reporting at sea, and so far using this communication system, in marine emergency situations has helped rescue thousands of lives...

In 1999, Typhoon 9918 struck Kyushu Island, which is located in Western Japan. During the strongest stage of the typhoon, the central pressure was 930 hPa and the maximum wind speed was 45 m/s near the center of the typhoon. The maximum storm tide was over 2 m along the coast of Kumamoto Prefecture on Kyushu Island. Due to the storm surges and wind waves, the typhoon caused enormous damage to m...

We describe the application of molecular biological techniques to estimate eukaryotic diversity (primarily fungi, algae, and protists) in Antarctic soils across a latitudinal and environmental gradient between approximately 60 and 87 degrees S. The data were used to (i) test the hypothesis that diversity would decrease with increasing southerly latitude and environmental severity, as is general...

A study of maritime surveillance operations revealed that visual analytics could enable better maritime situation analysis. For that purpose, we designed the Maritime Visual Analytics Prototype, which is detailed in this demo paper. It supports the detection of marine anomalies and the detailed analysis of vessels of interest through a series of specialized tools. First, the Analysis Set Manage...

In the maritime domain, risk is evaluated within the framework of the Formal Safety Assessment (FSA), introduced by the International Maritime Organization in 2002. Although the FSA has become an internationally recognized and recommended method, the definition, which is adopted there, to describe the risk, seems to be too narrow to reflect the actual content of the FSA. Therefore this article ...

Safety assessment based on conventional methods such as probability risk assessment (PRA) may not be well suited for dealing with innovative systems having a high level of uncertainty, particularly in the feasibility and concept design stages of a maritime engineering system. By contrast, safety models using fuzzy logic approaches employing fuzzy IF-THEN rules can model the qualitative aspects ...

Visual surveillance in the maritime domain has been explored for more than a decade. Although it has produced a number of working systems and resulted in a mature technology, surveillance has been restricted to the port facilities or areas close to the coastline assuming a fixed-camera scenario. This dissertation presents several contributions in the domain of maritime surveillance. First, a no...