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. 2012 Oct 12;12(10):13694–13719. doi: 10.3390/s121013694

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© 2012 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 6. — The normalized time domain features in the D_IRF dataset: (a) RMS. (b) kurtosis value. (c) peak-peak value. (d) impulse factor. (Note: Sample data No. 1–100, 101–200, 201–300, 301–400, 401–500 represent Normal, IRF07, IRF14, IRF21 and IRF28 respectively.)

Figure 6. — The normalized time domain features in the D_IRF dataset: (a) RMS. (b) kurtosis value. (c) peak-peak value. (d) impulse factor. (Note: Sample data No. 1–100, 101–200, 201–300, 301–400, 401–500 represent Normal, IRF07, IRF14, IRF21 and IRF28 respectively.)