Abstract: This disclosure provides an EEG decoding method based on a non-negative CP decomposition model. The method extracts time component characteristics of the EEG of the different subjects in the boundary avoidance task, optimizes a characteristic dimension by using a 2-DPCA, and takes classification by using a support vector machine, so that differences of the EEG of subjects in different states can be reflected, and the EEG classification of the single subject has a great accuracy. The time component characteristics of the EEG can be obtained by using the channel components and the frequency components based on the non-negative CP decomposition model and by means of the interaction between the EEG modes. The characteristics of the obtained EEG time components have good separability, and the dimensions of the characteristics are optimized, so that the EEG of left and right hand movements in the boundary avoidance tasks can be effectively decoded.

Abstract: The application discloses a photonic device, a crossed waveguide, a waveguide layer and a method for manufacturing the same.

Abstract: An agricultural aircraft for spreading granular fertilizer and a spreading method thereof. The agricultural aircraft includes an aircraft body, a power system, and a spreading device, where the spreading device is located at a front part of the aircraft body, and the aircraft body is also provided at the front thereof with a wind direction sensor and a wind speed sensor communicatively connected a controller; the spreading device includes a box body, a throwing disc, and a tray connected to the box body, where a left baffle plate and a right baffle plate with controllable opening angles are disposed on the tray; an upper part of the box body is a material box for storing granular fertilizer, a cavity for accommodating the tray and the throwing disc is disposed on one side of the box body.

Abstract: The present invention discloses an agricultural aircraft for spreading granular fertilizer and a spreading method thereof. The agricultural aircraft includes an aircraft body, a power system, and a spreading device, where the spreading device is located at a front part of the aircraft body, and the aircraft body is also provided at the front thereof with a wind direction sensor and a wind speed sensor communicatively connected a controller; the spreading device includes a box body, a throwing disc, and a tray connected to the box body, where a left baffle plate and a right baffle plate with controllable opening angles are disposed on the tray; an upper part of the box body is a material box for storing granular fertilizer, a cavity for accommodating the tray and the throwing disc is disposed on one side of the box body.

Abstract: The present disclosure provides a dimming device and a driving and dimming device, where the dimming device includes a communication unit, a microcontrol unit, a power supply unit and a connector, and the power supply unit is input with a mains voltage and outputs a voltage required by the communication unit, the communication unit receives a control signal obtained by wired or wireless transmission and outputs the control signal to the microcontrol unit, the microcontrol unit outputs a dimming signal for dimming, and the connector is detachably connected with a connector of another device.

Abstract: The present disclosure provides a dimming device and a driving and dimming device, where the dimming device includes a communication unit, a microcontrol unit, a power supply unit and a connector, and the power supply unit is input with a mains voltage and outputs a voltage required by the communication unit, the communication unit receives a control signal obtained by wired or wireless transmission and outputs the control signal to the microcontrol unit, the microcontrol unit outputs a dimming signal for dimming, and the connector is detachably connected with a connector of another device.