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Recently, ICT has been introduced to various fields of fishery and marine work. For example, wireless access systems are used for realizing a broadband environment in coastal areas and on isolated islands. The authors also realized a marine broadband environment for small fishing vessels to manage aquatic resources. In order to establish stable use of wireless access systems, it is necessary to evaluate...
To date, the authors of this report have carried out estimations of initial stock size and catch per unit effort (CPUE) calculations in real time by collecting positional information and catch information from small fishing vessels using a sensor network system, and have facilitated fisherman-driven resource management in the coastal fishing industry by digitizing fisheries information. As the next...
Recent advances in information and communication technologies are leading to an environment where marine traffic (i.e., locate and track vessels) can be monitored in real time. For larger vessels, position information is collected by sniffing messages of AIS (Automatic Identification System), which they are obliged to install. However, for smaller vessels, such as fishing and pleasure boats, a lack...
To assist coastal fisheries, we have been working to utilize IT. This paper reports on sea cucumber resource management using a digital diary system that we have developed. At Rumoi, which is located in western Hokkaido, fishing for sea cucumber is carried out in the summer each year by dredge net fishing. Although fishing for sea cucumber has been conducted for over 30 years, since 2003 the price...
In wireless sensor networks, reducing the energy consumption of the whole network is one of the most important research themes. In this paper, we first define a data aggregation model that defines the relationship between the increased amount of entropy and the number of sensor nodes. We also develop an intermittent transmission method, which is mainly assumed clustered sensor networks. Each sensor...
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