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Most of the existed methods for steady-state visual evoked potential (SSVEP) recognition require a specified time window length (TWL) to estimate the dominant frequency components in EEG signals. Typically, the TWL is manually predetermined and then fixed during running of the SSVEP-based brain-computer interface (BCI), which may not give the optimal information transfer rate (ITR). This study proposes...
The median filter, as the most common one of nonlinear filters, possesses the incomparable advantage over linear filters - overcome the edge blur. Many improved versions have been developed to reduce noises and reserve details. They are aimed at the images containing much detail or corrupted by high percentage of noises. However, none of currently proposed median filters could provide perfect adaptability...
There is co-petition in the technology alliances. The correlation between competition awareness and innovation performance in the process of knowledge transfer within the alliance is studied in the paper. The empirical study collects data from 131 firms located in Liaoning Province area in China, and the hypothesis of the correlation are tested with Structural Equation Modeling. The result shows that...
Dense wavelength division multiplexing (DWDM) technology is a promising way for high transmission-rate demand in the ever complex Earth Observation satellites and space station. However, fiber Bragg grating (FBG) filters used in DWDM systems may fail to check out the correct wavelength affected by cosmic rays. In order to analyze the spectra characteristics of FBGs in gamma radiation environment,...
The plots of thinning intensity with five different treatments of C(control), L(35.48%), M(43.15%) , H(57.66%) and G(81.85%) on the undergrowth, carried out in the Larix principis-rupprechtii plantations of Saihanba forestry centre, Hebei province of China, were repeated four times respectively in order to find out the effects of thinning on community characteristics of Larix principis-rupprechtii...
In this paper, an experiment was designed to record the electroencephalography when people caught the vision of differently directional moving (turning right, turning left, moving forward, moving backward). The signals from 30 EEG channels were analyzed by independent component analysis to obtain the independent components. The tagged permutations of independent components were obtained and a discrete...
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