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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 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)
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)
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 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)
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)
We have been developing and operating safety confirmation systems for universities since 1999. The Great East Japan Earthquake in 2011 clarified some issues related to the safety confirmation systems. Thereby, we reviewed the safety confirmation systems, the result of which revealed that more carefully selected functionality, restriction on the volume of(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)
When a large-scale disaster occurs, information sharing among administration, residents, and volunteers is indispensable. However, as reported, a lot of examples show that it is difficult to use well. The Disaster Information System is not built on the infrastructure which the system failure was considered at the disaster is nominated for the cause. In this(More)
The KJ method is an idea generation method and widely used in Japan. In this study, we developed a prototype system which can assist visually-impaired persons to perform the KJ method with sighted persons. Visual operations such as seeing the cards are indispensable for performing the KJ method, which means visually-impaired persons are impossible to(More)