ELECTROTECNIA GRAY WALLACE PDF
Electrotecnia. Fundamentos teóricos y aplicaciones prácticas. Gray Alexander, Wallace. Aguilar – Foto Libros de Segunda Mano – Ciencias, Manuales y Oficios – Física, Química y Matemáticas: wallace. Compra, venta y subastas de Física. Download Citation on ResearchGate | Electrotecnia: fundamentos teóricos y aplicaciones prácticas / por Alexander Gray y G. A. Wallace | Traducción de.
|Published (Last):||20 November 2017|
|PDF File Size:||8.88 Mb|
|ePub File Size:||18.79 Mb|
|Price:||Free* [*Free Regsitration Required]|
In this chapter, we will define Finite Element Analysis and. Given that the number of false awllace in this patient is almost 80 times larger see Patient J in Table 3it is natural that the results are equivalent to selecting a random ordering. Name of the Faculty: Course type Core course 1.
This chance correction assumes the detections of each reviewer are independent random choices, not a realistic model if there are true events in the data that lead to correlated detections.
The channel level performance of the detector is reported on Table 2. This difference in the number of active channels explains the higher sensitivity and lower specificity of the automatic detector at the S95 operating point, compared to the S The visual detection and marking of events in these recordings by human reviewers is therefore a very time consuming task, and subjectivity in the results is unavoidable.
A Example of true positive events illustrating clear events marked by the expert and identified by the detector. Electrical energy, direct current, alternating More information.
Automatic detection of fast oscillations (40– Hz) in scalp EEG recordings
More details regarding the channels presenting FOs is shown in Fig. We evaluated the performance of the proposed detector with data from 15 focal epilepsy patients. The passband of the band-pass filters BPF in indicated below the corresponding block.
II, Mexico  D. Of Electromagentic Fields, Dept. A College More information. The ranking distance results are an important end point, and wallaxe also reported in Electrotwcnia 3.
Canadian Skills Modelling of electric power systems in steady state, during short circuits and during other More information. Two possible operating points S95 and S86 are indicated in the curves. Quantitative analysis of high-frequency oscillations 80— Hz. The profession of electrical engineering More information.
Automatic detection of fast oscillations (40–200 Hz) in scalp EEG recordings
Electrical Circuits 3 Laboratory Credit: Hence, the reported performance metrics are derived from positive events.
Wallaace present an automatic scalp FO detector to be used as a tool in future studies. There is a very marked decrease in the number of events as the frequency increases, part of this may be due to the fact that a non-ideal Hz cutoff electrotecni antialiasing filter was used for the signal acquisition.
In the figure we can also see that there is no significant improvement of the automatic detector at S86 compared to the S95, as mentioned earlier.
Acy M Kottalil 2, N. The second feature is the maximum of the RMS value electrtecnia the narrowband signal, among all the individual events that are part of a subject level pre-detection.
Then, we believe it is better to compare detectors using the positive and negative agreement measures. The high sampling rate necessary to record this fast activity leads to recordings with large amounts of data. Examples electrtoecnia these sharp transients can be seen in some of the true negative examples of Fig. The proposed automatic scalp FO detector shows a good performance in the tested group of patients.
Scalp-recorded high-frequency oscillations grqy childhood sleep-induced electrical status epilepticus. This supports the idea that the automatic detector at this operating point is more sensitive than the expert, detecting weaker but probably real FOs note that for the automatic detector operating at S86 the proportion of spikes with simultaneous fast activity for the automatic detector is 0.
The figure shows the proportion of channel level events at different channels, for 3 of the 15 patients.
This means that FOs with high central frequency will be detected in more than one frequency band simultaneously, but this does not affect the performance of the detector. We aim to automatically detect fast oscillations 40— Hz related to epilepsy on scalp EEG recordings.