Abstract The Great East Japan Earthquake caused many casualties and radiation
contamination from the Fukushima nuclear power plant, and many problems still remain in …

In the actual disaster case, there is certain possibility that electric power line is damaged and
power energy cannot be supplied to those communication network devices, eventually those …

About 80 percent of Japan is located in the mountain or coast sides, and so most cities
should be concerned to be isolated when a ultra large disaster happens such as Japan …

If a large scale disaster such as East Japan Great Earthquake is occurred, many resident
areas would be isolated with others because of the disconnection of transportations …

Cognitive wireless network consisted of multiple different types of wireless interface is one of
efficient wireless transmission methods for Disaster Information Network, because it solves …