Abstract: Disclosed is an EEG recognition method for a natural hand movement based on a time-domain and frequency-domain multi-layer brain network, including: (1) acquiring a multi-channel EEG signal of the natural hand movement; (2) preprocessing the multi-channel EEG signal, and extracting a ? wave, a ? wave, a ? wave, a ? wave, and a ? wave at each time point; (3) constructing a time-domain multi-layer brain network using a wSAR model; (4) calculating the frequency-domain multi-layer brain network using the phase-amplitude coupling; (5) combining the time-domain multi-layer brain network and the frequency-domain multi-layer brain network, and performing standardization; and (6) calculating metrics of the time-domain and frequency-domain multi-layer brain network and a super-adjacency matrix of a decomposed time-domain and frequency-domain multi-layer brain network, inputting the same to a two-layer graph convolutional network (GCN), and fusing manual, shallow, and deep features for analysis.

Abstract: Disclosed is an online estimation method for wrist torque based on neural features and LSTM, including following steps: (1) an experimenter keeps his/her arms stationary and applies torque to a torque sensor through his/her wrist; (2) acquiring data from the torque sensor and high-density surface EMG ((HD-sEMG) synchronously; (3) decomposing the HD-sEMG using a blind source separation algorithm to obtain a motor unit spike train (MUST); (4) constructing input and output vectors on the basis of the original HD-sEMG and the decomposed MUST, performing training of the LSTM, and performing polynomial regression of a discharge rate and torque of a neural feature; and (5) calculating a real-time discharge rate (DR) of the CST using a sliding window approach for real-time estimation of the torque.

Abstract: A warehousing apparatus including a temporary storage layer board used for providing a temporary storage station, and a plurality of shelves with each shelf including at least one storage layer board and a plurality of stand columns arranged at intervals in a horizontal direction. The storage layer board is spaced apart from the temporary storage layer board in a vertical direction by means of a stand column, and the storage layer board is used for providing a storage position, a first robot passage in which a first robot travels and a second robot passage in which a second robot travels.

Abstract: Disclosed are a rock drilling experimental device and a method for simulating true triaxial conditions of deep well drilling; the device includes an energy supply module, an experimental loading module, a hydraulic supply module, a parameter control module and a data acquisition module. The device provides power through the energy supply module; the experimental loading module applies three directional stresses, a liquid column pressure and a pore pressure to a rock specimen by simulating a formation environment, and simultaneously drills into the rock specimen with a bit; the hydraulic supply module provides a hydraulic pressure to the liquid column pressure, the pore pressure and the three directional stresses in the experimental loading device; and the parameter control module is used to control a displacement module of the experimental loading module to move, and adjust a displacement, the pressure and a temperature to the target values.

Abstract: Disclosed are a rock drilling experimental device and a method for simulating true triaxial conditions of deep well drilling; the device includes an energy supply module, an experimental loading module, a hydraulic supply module, a parameter control module and a data acquisition module. The device provides power through the energy supply module; the experimental loading module applies three directional stresses, a liquid column pressure and a pore pressure to a rock specimen by simulating a formation environment, and simultaneously drills into the rock specimen with a bit; the hydraulic supply module provides a hydraulic pressure to the liquid column pressure, the pore pressure and the three directional stresses in the experimental loading device; and the parameter control module is used to control a displacement module of the experimental loading module to move, and adjust a displacement, the pressure and a temperature to the target values.

Abstract: A dynamically LED plant light supplement system includes RGBW light-filling lamp, the light-filling lamp driving unit, the lighting intensity collection unit, the plant growth monitoring unit, the centralized control unit, and the planting think tank. The plant growth monitoring unit, planting think tank, and lighting intensity collection unit are used to dynamically adjust the lighting intensity, light quality ratio, photoperiod and light time distribution of the plant lamp according to the plant type and growth stage. Lighting parameters, including the combination of light quality, the intensity of each single light quality, the operating cycle of each single light quality and the alternating cycle of different light quality, can be set according to the lighting formula so that the growth stage of the plant can be automatically determined without human intervention and the lighting formula can be dynamically switched.

Abstract: A method for preparing a double layered porous hollow fiber membrane and the device and product thereof. The method comprises preparing uncured porous hollow fiber with larger pore diameters as the inner robust supporter of the membrane from thermoplastic polymeric resins by thermal induced phase separation (TIPS) method and then binding an ultra thin coating layer with hydrophilic microfiltration or ultrafiltration function and fine pore diameters prepared on the outer surface of the robust hollow fibers from a solution of the thermoplastic polymeric resins by a coating process using non-solvent induced phase separation (NIPS) method.

Abstract: A method for preparing a composite multilayer porous hollow fiber membrane and the device and product thereof. The method comprises preparing uncured porous hollow fibers with larger pore diameters as the inner supporter of the membrane from thermoplastic macromolecule polymer resins by thermal induced phase separation method and then bonding a superthin coating layer with microfiltration or nanofiltration function and small pore diameter prepared on the outer surface of the hollow fibers from a solution of the thermoplastic macromolecule polymer resins by a coating process using non-solvent induced phase separation method.

Abstract: A method for preparing a composite multilayer porous hollow fiber membrane and the device and product thereof. The method comprises preparing uncured porous hollow fibers with larger pore diameters as the inner supporter of the membrane from thermoplastic macromolecule polymer resins by thermal induced phase separation method and then bonding a superthin coating layer with microfiltration or nanofiltration function and small pore diameter prepared on the outer surface of the hollow fibers from a solution of the thermoplastic macromolecule polymer resins by a coating process using non-solvent induced phase separation method.