The chloride permeability of the concrete has to be evaluated it adequately to carry out the effective maintenance repair plan of the concrete structure for damage by salt attack. Because the existence of the crack lets chloride permeability of the concrete accelerate more, it must be evaluated adequately in particular. However, the calculation is difficult by the existing evaluation method with the complicated crack cases. In this study, the crack cases of the subject is much irregularity crack and a little short crack in a wide area like the floor slab in such crack cases. This study tried that it was made clear by the electrical migration test method. The test method was carried out by mortar which changed some cases such as crack width, crack depth, crack length and crack number to clarify the chloride permeability of the concrete and the influence of the difference of those cases on effective diffusion coefficient was examined experimentally. Furthermore, the possibility of the consideration of the crack cases for the calculation method of the chloride ion content of reinforcement position was examined based on the experiment results.

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We propose the following recuperation planning in Tarou area in Miyako city as a model area with the aid of educational industrial complex. Proposed means and vision are the following.
First, setting up networked anti disaster facility within 500 m evacuation distance.
Second, planning a model city of fence off which is more agreeable to the 21st century concept than traditional fence up concept, using natural energy and anti-disaster bridge instead of giant embankment.
Third, proposing hill side residence instead of hill top residence.
Fourth, putting up computergraphics of model planning for the residents.
Lastly, we examined the possibility of the solar energy city based on the energy test calculation of photovoltaic power generation by solar heat in the inundation ground.

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This work presents the performance of the Electrical Capacitance Tomography (ECT) and its application in measuring temperature distribution over high viscosity during phase transition of Polycarbonate resins (PC). ECT is designed to investigate measures and visualize inner process in a non-invasive and non-intrusive way. Its main idea is collecting the cross section images within the enclosed area based on the capacitance measurement in which out of it the relative permittivity values are obtained. The polycarbonate resins were placed inside the ceramic container with 12-electrode sensors arranged equidistantly around the periphery of the container while the other ends are connected to ECT. Heat is evenly supplied with a specific period of time. The behavior of relative permittivity on the polycarbonate material due to heat effect is studied. Graphs are presented that depict the thermal characteristics and relative permittivity of the resins during phase change and thus found out that the temperature is a function of relative permittivity. The calculated value is the amount of heat penetrated that causes physical changes and the reconstructed images display the level of heat intensity occurs to the resins. The ECT can be used as a new technique in measuring temperature distribution.

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Under some conditions, we prove the law of the iterated logarithm for a random walk in random environment. Our analysis is based on the consideration of a regeneration structure and the law of the iterated logarithm for independent random variables.

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