Hiroaki Yuze

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When large earthquakes occur, affected inhabitants lose access to phones and the Internet. To provide immediate assistance to disaster victims, we developed a disaster prevention application that is available off-line, and that has the following characteristics. 1) When communication infrastructures are damaged, the functions of the developed application(More)
In the case of large scale disaster, such as earthquake, volcanic explosion, sea wave, more robust and flexible nation-wide disaster information network is required not only for governmental supporters but also residents and volunteers than business oriented network to communicate each other even though some parts of the network and information system are(More)
In this paper, a robust and large scale resident-oriented safety information system on the occurrence of the various disasters constructed over a nationwide high-speed network is introduced. The evacuated residents can register their safety information to the local safety information servers in the evacuation area whether they can safely evaluated or not(More)
The Great East Japan Earthquake hit on March 11, 2011, and it caused serious damages over Japan. The area of the disaster was extremely wide, and new types of problems have been widely known in compared with previous earthquakes. The authors have studied a safety confirmation system for the students in the University of Shizuoka, Japan, since 1999 in order(More)
We developed the survivor information system in preparation for a large-scale disaster like the Tokai earthquake. In this system, students and university staffs can register their survivor information using a personal computer or a mobile phone. We had operated this system for six years. And we improved the system during this period. When the new influenza(More)
When a large-scale disaster occurs, it is crucial to secure means of communication. However, as the damage to the communication networks might be aggravated as the magnitude of the disaster becomes larger, it would likely cause a state where all communications are disrupted. In addition, as the amount of damage to the power plant and transmission line(More)
In this paper, a robust and large scale resident-oriented safety information system on the occurrence of the various disasters constructed over a nationwide high-speed network is introduced. The resident evacuated can registered his/her safety information in the local safety information servers in the evacuation area whether he/she can safely evaluated or(More)
To cope with large-scale disasters, we have been developing the Autonomous Anti-disaster Base Station. The station is powered by solar cells and batteries and equipped with connections to the satellite Internet service and wireless LAN. In this study, we conducted a communication experiment between the Autonomous Anti-disaster Base Station, located in(More)
In this paper, a robust and large scale resident-oriented safety information system on the occurrence of the various disasters constructed over a nationwide high-speed network is introduced. The evacuated residents can register their safety information to the local safety information servers in the evacuation area whether they can safely evaluated or not(More)
In this paper, the influence of our proposed Urban Disaster Information System by moving objects is experimented and discussed. It is widely known that the network conditions between wireless node and the setup wireless LAN (Access point) is influenced by moving objects like cars, animals, and bullet train. Therefore, Disaster Information System in urban(More)