| Project/Area Number |
14571569
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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 |
Obstetrics and gynecology
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| Research Institution | Saga University (2004-2005)
佐賀医科大学 (2002-2003) |
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Principal Investigator |
SHONO Hideaki Saga University, Faculty of Medicine, Professor, 医学部, 教授 (10154345)
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| Co-Investigator(Kenkyū-buntansha) |
TAKASAKI Mitsuhiro Saga University, Faculty of Medicine, Associate Professor, 医学部, 助教授 (70236206)
MURO Masami Saga University, Faculty of Medicine, Assistant Professor, 医学部, 講師 (80284652)
SHONO Mayumi Saga University, Faculty of Medicine, Research Associate, 医学部, 助手 (00336132)
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| Project Period (FY) |
2002 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2005: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2004: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2003: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2002: ¥1,700,000 (Direct Cost: ¥1,700,000)
|
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| Keywords | Fractal / Non-linear / Heart rate fluctuation / Perinatal |
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| Research Abstract |
We devised a new analysis using root mean square of integrated and subtracted fluctuation, termed RIS-A, to determine a fractal dimension of non-stationary fluctuation. In the algorithm, computations of the root mean square, R(n), of all integrated and subtracted fluctuations are repeated over all scales (n). The fractal scaling exponent is determined as a slope of the line relating log R(n) to log n. Furthermore, we analyzed a long non-stationary time series, such as fetal heart rate fluctuations.
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