| Project/Area Number |
09680426
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
社会システム工学
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| Research Institution | Hiroshima University |
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Principal Investigator |
OSAKI Shunji Hiroshima University, Faculty of Engineering, Professor, 工学部, 教授 (10034399)
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| Project Period (FY) |
1997 – 1998
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| Project Status |
Completed (Fiscal Year 1998)
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| Budget Amount *help |
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1998: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1997: ¥1,800,000 (Direct Cost: ¥1,800,000)
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| Keywords | Product life cycle / Assessment / Cost criterion / Maintained system / Software / Reliability / Release problem / Item / ISO 9000 / ISO 14000 / 数理モデル / ハードウェア |
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| Research Abstract |
It is of geat importance to evaluate items based on life cycle assessment (production, comsumption, rubbish). Of our objective is to formualate the mathematical models for the assessment of cost, environment, and recycling. We showed our results as follows.
The reliability and maintainability of items (products) of life cycle assessment is essential to such research areas. We discuss the maintained systems with inventories. Over pr yield exceed inventories, but shortage of inventories yields the decrease of the production efficiency. The trade-off for controling the optimal inventory levels is of great import p discussed some polices based on life cycle assessment.
Software reliability is of another interest for life cycle assessment. In particular reliability plays an important role in our modem society. We discussed software reliability models and the software release policies based on software life cycle assessment.
We discussed the reliability and maintainability of items based on life cycle as assessment, which were the first step works for life cyle assessment. We will discuss the more generalized and sophisticated models and evaluate the performance from the viewpoint of life cycle assessment.
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