Autor: Kong, L. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Continual mode transformation in a unidirectional compound waveguide
Autorzy:: Kong, W.
Cai, Q.
Lin, Z.-L.
Fang, Y.-T.
Powiązania:: https://bibliotekanauki.pl/articles/173535.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: mode transformation
unidirectional waveguide
metal slabs
Opis:: We propose a new mechanism to achieve mode transformation. In a unidirectional air waveguide we place some metal slabs to form the unidirectional edge loop. Based on the effect of mode interference, the even mode or the odd mode can be completely canceled from their degenerated state through a precise adjustment of slab position, which leads to another mode to be released. By this mechanism, we have achieved continual transformations between even mode and odd mode.
Źródło:: Optica Applicata; 2018, 48, 1; 87-94
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Personal identification based on brain networks of EEG signals
Autorzy:: Kong, W.
Jiang, B.
Fan, Q.
Zhu, L.
Wei, X.
Powiązania:: https://bibliotekanauki.pl/articles/329856.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: electroencephalogram signal
personal identification
brain network
phase synchronization
elektroencefalogram
identyfikacja osobowa
sieć mózgowa
synchronizacja fazy
Opis:: Personal identification is particularly important in information security. There are numerous advantages of using electroencephalogram (EEG) signals for personal identification, such as uniqueness and anti-deceptiveness. Currently, many researchers focus on single-dataset personal identification, instead of the cross-dataset. In this paper, we propose a method for cross-dataset personal identification based on a brain network of EEG signals. First, brain functional networks are constructed from the phase synchronization values between EEG channels. Then, some attributes of the brain networks including the degree of a node, the clustering coefficient and global efficiency are computed to form a new feature vector. Lastly, we utilize linear discriminant analysis (LDA) to classify the extracted features for personal identification. The performance of the method is quantitatively evaluated on four datasets involving different cognitive tasks: (i) a four-class motor imagery task dataset in BCI Competition IV (2008), (ii) a two-class motor imagery dataset in the BNCI Horizon 2020 project, (iii) a neuromarketing dataset recorded by our laboratory, (iv) a fatigue driving dataset recorded by our laboratory. Empirical results of this paper show that the average identification accuracy of each data set was higher than 0.95 and the best one achieved was 0.99, indicating a promising application in personal identification.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2018, 28, 4; 745-757
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

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