In analyses of buckling and geometrical nonliner buckling behavior of structures which deform largely, tangent stiffness matrix and geometric stiffness matrix play an important role. This paper shows that a general form of the geometric stiffness is derived from differentiating two shape matrices, the connection matrix and the equilibrium matrix, with respect to any joint displacement. When the general equation mentioned above is used, even the buckling analysis and the finite displacement analysis of frames costituting of arbitary curved member and rigid joints such as arch structures can be possible.

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In 2011, the four nuclear reactors at the First Fukushima nuclear power plant were burst and broken by the great disaster, East Japan Earthquake. In this report, we consider the nuclear power supply. The cost of nuclear power generation is not cheaper than the other generation costs, because the cost does not include the uncertain enormous compensation of serious accident or the processing cost of nuclear waste. An opinion in Japan was surveyed by questionnaire from a generation in Japan, students of 3rd year ,in high schools or national college of technologies. Their opinions about the problem, which we should abolish or continue the nuclear power generation in future, were divided in half and half. It is desirable there is much information from electric power companies to young people on the essential problems of the nuclear power generation. The public debate on the nuclear generation in Japan is still required to the future.

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