Abstract: [PROBLEMS] A large amount of life information related to unsafe factors of human life such as illness, child abuse and traffic accident are issued by information providing organizations such as national and local governments and academic organizations. If such life information is not received by target persons properly, it is delayed to deal with it and the person may suffer a disadvantage or a danger to life. [MEANS OF SOLVING THE PROBLEMS] The invention receives information from the information providing organizations and registers the information as life information for each of the unsafe factors. Further, the invention extracts target-person characteristics such as gender, date of birth and a regional characteristic included in the information. The life information is provided by e-mail to registered users who match the extracted target-person characteristics without delay and without failure to receive it.

Abstract: A movable tsunami buffer dam has a unit configured such that a plurality of separate units, each of which having a shape in which a frame made of a light material is sandwiched by a pair of plates made of a light material, is stacked with said plates disposed in a pile; and a locking member for locking said unit to a ground surface such that said unit can rise up from said ground surface and collapse onto said ground surface. The separate units has a structure in which water from a tsunami can advance into a space formed between said plates by said frame. A required thickness is ensured due to said unit being configured such that said separate units are stacked, and the manufacturing cost is reduced to a greater extent than in the case of a dam configured from a single separate unit of said required thickness, because the big size lumber for obtaining the units is very expensive.

Abstract: A movable tsunami buffer dam has a unit configured such that a plurality of separate units, each of which having a shape in which a frame made of a light material is sandwiched by a pair of plates made of a light material, is stacked with said plates disposed in a pile; and a locking member for locking said unit to a ground surface such that said unit can rise up from said ground surface and collapse onto said ground surface. The separate units has a structure in which water from a tsunami can advance into a space formed between said plates by said frame. A required thickness is ensured due to said unit being configured such that said separate units are stacked, and the manufacturing cost is reduced to a greater extent than in the case of a dam configured from a single separate unit of said required thickness, because the big size lumber for obtaining the units is very expensive.