| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Outline of Final Research Achievements |
For efficient maintenance of infrastructure, it is essential to estimate risk, considering the uncertainty of stochastic property of state value of infrastructure and maintenance cost. Numerical simulation showed that due to the effect of maintenance activities, such as prioritization of repair of damage, tail part of the probability density function can gain thickness. It was found that Entropic Value at Risk, an information theoretic risk measure, can appropriately evaluate risk of such situation. When these risk measures are applied to time series events such as maintenance of infrastructure, they cause difficulty of time inconsistency and exponential increase of computational cost. Methods to manage these difficulties are also developed.
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