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Based on neural network, an improvement scheme that iterative matrix replace secondary derivative has been developed by introduced quasi-Newton algorithm. Profile code based on probability has been used and comparison of window width and learning training has been completed. The experiment results indicate that the prediction for secondary structures of protein obtain a very good effect based on neural...
In this paper, we have proposed a new high-order conformal method, in which we use two integral loops of Faraday's law to update H-field. We observe that the proposed method has low numerical dispersion error, and it can use large space cells so as to reduce the computer memory required. Using this modified method, numerical computations are performed to predict the RCS of a PEC object as well as...
Influenced by detector materials' non-uniformity, growth and etching techniques' etc, every detector's responsivity of infrared focal plane arrays (IRFPA) is different, which results in non-uniformity of IRFPA. And non-uniformity of IRFPA generates fixed pattern noises (FPN) that are superposed on infrared images. So the quality of infrared images is poor, which greatly limited the application of...
A CNC contouring system in which each axis is driven by a two-stage actuation system, where the first stage is a DC servo drive and the second one is piezoelectric microactuator, is discussed. In this system, the contour error, caused by the first stage due to dynamic response diferences between the axes, is decomposed to components which are used as position references for the second stage of each...
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