This paper utilizes a discrete wavelet transform to present a parallel architecture for independent component analysis (ICA), which is a hybrid system consisting of two sub-ICA processes. One process takes the high-frequency wavelet part of observations as its input, meanwhile the other process takes the low-frequency part. Their results are then merged to generate the final ICA results. Compared ...Show More
The principles, construction, error analysis and insite measurement results of the digitized pressure difference meter are presented. It measures gas pressure differences by measuring by ultrasonic means the depths of columns of liquid. Its accuracy measured by the China National Institute of Metrology in the range of 0-120 mm is 0.03%.Show More
