Wavelet member, maximum decomposition level, best decomposition level and corresponding accuracy.

<p>Wavelet member, maximum decomposition level, best decomposition level and corresponding accuracy.</p

Single-level reconstruction of DWT for one seizure segment on MIT dataset.

<p>Among all wavelets, coif3 [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0173138#pone.0173138.ref028" target="_blank">28</a>] achieves the highest accuracy of 92.30% using 7 features from 6 bands. An example of the single-level reconstruction of the 6 bands are shown here. The IDs of the bands are given in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0173138#pone.0173138.g003" target="_blank">Fig 3</a>.</p

Suggested process in seizure detection using DWT.

<p>We suggest using coif and sym as two options since these two wavelet families have much better performance than the others. A decomposition level making the DWT frequency bands to cover the five human rhythms is high enough for clinical practice. Furthermore, in Band-Feature Selection, if EEGs from patient show specific frequency characteristic, the selection of band could be done among certain frequency bands. Similarly, specific features of patient’s EEGs can also be used to save computational cost.</p

Fifty-four Mother Wavelets.

<p>Fifty-four Mother Wavelets.</p

Relationship between seizure detection accuracy and decomposition level (UBonn).

<p>X-axis is decomposition level while Y-axis is classification accuracy. The first 7 subplots indicate the mother wavelet, which produce the highest accuracy in corresponding wavelet family. The last subplot is the average accuracy of the 54 mother wavelets with an error bar of one standard deviation.</p

Dual Pathways in the Oxidation of an Osmium(III) Guanidine Complex. Formation of Osmium(VI) Nitrido and Osmium Nitrosyl Complex

The guanidine moiety of arginine is involved in the active sites of a variety of enzymes, such as nitric oxide synthase (NOS) and NiFe hydrogenase. In this paper we aim to investigate the effects of a metal center on the oxidation of guanidine, which should provide an interesting comparison with the biological aerobic oxidation of arginine catalyzed by NOS. We studied the oxidation of an osmium­(III) guanidine complex, <i>mer</i>-[Os­(<b>L</b>)­{N­(H)­C­(NH₂)₂}­(CN)₃]⁻, (<b>OsG</b>, <b>HL</b> = 2-(2-hydroxyphenyl)­benzoxazole) by <i>m</i>-chloroperbenzoic acid (<i>m</i>-CPBA), which is potentially an O atom transfer reagent, and by (NH₄)₂[Ce^IV(NO₃)₆], which is a one-electron oxidant. With <i>m</i>-CPBA, <i>mer</i>-[Os­(NO)­(<b>L</b>)­(CN)₃]⁻ (<i>mer</i>-<b>OsNO</b>) is the product, while with Ce^IV, <i>mer</i>-[Os^VI(N)­(<b>L</b>)­(CN)₃]⁻ (<i>mer</i>-<b>OsN</b>) is formed instead. The crystal structures of <i>mer</i>-<b>OsNO</b> and <i>mer</i>-<b>OsN</b> were determined by X-ray crystallography. The mechanisms for the oxidation of <b>OsG</b> by <i>m</i>-CPBA and Ce^IV are proposed

Examples of 7-level decomposition and corresponding frequency bands.

<p>(A) On MIT dataset. (B) On UBonn dataset. The EEG signals are decomposed into several frequency bands. <i>d</i>_<i>i</i> is the detail band while <i>a</i>_<i>i</i> (<i>i</i> = 1, 2, … 7) is the approximation band. All detail bands and the last approximation band might be used for feature extraction.</p

Seizure and non-seizure EEG segments from MIT dataset.

<p>A 20-second’ window slides across the long-time EEG. If the window goes into a period of seizure, this segment is marked as “seizure”, otherwise, “non-seizure”.</p

Confusion Matrix.

<p>Confusion Matrix.</p

Mapping between bands in DWT and human EEG rhythms on MIT dataset.

<p>Each DWT frequency band relates to one or two human EEG rhythm. The frequency bands are calculated according to Eqs <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0173138#pone.0173138.e007" target="_blank">5</a> and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0173138#pone.0173138.e008" target="_blank">6</a>.</p