| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Research Abstract |
In this study, we construct several types of mathematical and stochastic model for evaluating the novel reliability characteristic, called "service availability" of software-based systems, considering the usage characteristics of the end-users. We define the software service availability as the probability that the software-based systems can satisfactorily complete the services the end-users require, and then derive several stochastic quantities for software service availability assessment as the functions of time and the debugging activities.
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