Abstract: A power transmission unit and a method for controlling the current flowing through it are disclosed. The power transmission unit includes a first switch which is turned on and off at a first duty cycle; a second switch which is turned on and off at a second duty cycle that is less than the first duty cycle; an inductive element connected between the first switch and the second switch, with its current associated with the first and second duty cycles; and a controller configured to determine a total duty cycle as the sum of the first and second duty cycles based on an actual phase current and a desired phase current of the inductive element, and to adjust the first and second duty cycles based on the determined total duty cycle. Embodiments of the present disclosure adjust both the first and second duty cycles through the total duty cycle, which changes with the total duty cycle, allowing both the first and second duty cycles to be adjusted to appropriate values.

Abstract: A semantics-based high resolution reconstruction method of a nighttime light remote sensing image includes: constructing a sample data set; the sample data set includes a plurality of data groups, and each data group includes a LR NTL image, and a HR NTL image and light semantics information consistent in spatial position with the LR NTL image; constructing a reconstruction model; performing training and validation on the reconstruction model by using the sample data set to obtain an optimized reconstruction model; and taking a to-be-reconstructed LR NTL image and light semantic information corresponding to the to-be-reconstructed LR NTL image as an input of the optimized reconstruction model, and outputting, by the optimized reconstructed model, a HR NTL image obtained through resolution reconstruction.

Abstract: A method for retrieving heights of densely-covered forest canopies near power transmission lines includes: acquiring ICESat-2 LiDAR data, JL-1 image data, auxiliary data and three-dimensional information data about the power transmission lines within a target area; carrying out image preprocessing on a JL-1 image to generate a first image; screening the ICESat-2 LiDAR data according to a screening rule to obtain high-quality laser tree height data; by employing the first image, the high-quality laser tree height data and the auxiliary data, training a neural network model for retrieving a forest tree height according to an optical image and the auxiliary data; by employing the neural network model, generating a height distribution map of densely-covered trees in the target area; and calculating a height difference between a tree and a power transmission line nearest the tree to generate a hidden danger troubleshooting theme map.

Abstract: An automatic precision calculation method of a pose of a rotational linear array scanning image includes: obtaining a collection parameter of the rotational linear array scanning image and a camera intrinsic parameter; based on the above parameters, projecting the rotational linear array scanning image to its tangent plane by orthographic projection transformation to generate an equivalent frame image having the approximately same intrinsic and extrinsic parameters as the rotational linear array scanning image and calculate a coordinate of each pixel of the equivalent frame image projected onto the rotational linear array scanning image based on an inverse projection transformation calculation method; by using structure-from-motion method, automatically calculating a pose parameter of the equivalent frame image and a corresponding waypoint three-dimensional coordinate; with the pose parameter of the equivalent frame image as an initial value, obtaining an accurate imaging parameter of the rotational linear ar

Abstract: A pre-lithiated film and a preparation method therefor and an application thereof. The pre-lithiated film comprises: a 1 ?m-50 ?m base film and a 0.02 ?m-100 ?m pre-lithiated coating coated on the base film; the pre-lithiated coating includes: 1 wt %-99.99 wt % of a pre-lithiated material, 0 wt %-98.99 wt % of a coating material, 0.01 wt %-10 wt % of a binder, 0 wt %-10 wt % of a conductive additive material, 0 wt %-2 wt % of a dispersing agent and 0 wt %-2 wt % of an aid. The pre-lithiated material is a material that can produce an electrochemical reaction to release lithium ions under voltage control.

Abstract: A semantics-based high resolution reconstruction method of a nighttime light remote sensing image includes: constructing a sample data set; the sample data set includes a plurality of data groups, and each data group includes a LR NTL image, and a HR NTL image and light semantics information consistent in spatial position with the LR NTL image; constructing a reconstruction model; performing training and validation on the reconstruction model by using the sample data set to obtain an optimized reconstruction model; and taking a to-be-reconstructed LR NTL image and light semantic information corresponding to the to-be-reconstructed LR NTL image as an input of the optimized reconstruction model, and outputting, by the optimized reconstructed model, a HR NTL image obtained through resolution reconstruction.

Abstract: A method for decoding and encoding network steganography includes: extracting an attention mask of a container image by a convolutional block attention network; extracting two-dimensional image features of a secret image by a feature preprocessing network; splicing the two-dimensional image features and the attention mask of the container image and the secret image in a channel layer, and inputting a spliced image into an encoding network to generate a stego image; inputting the stego image and the container image into a decoding network to respectively obtain a reconstructed secret image and a generated secret image; and constructing a total loss function considering a similarity between the container image and the stego image, a similarity between the secret image and the reconstructed secret image, and a difference between the reconstructed secret image and the generated secret image, and thus performing training on a network model.

Abstract: A metal seawater fuel cell includes a single cell or a battery pack which is composed of more than two single cells connected in series or in parallel or in series and parallel through circuits. The single cell has a metal anode arranged oppositely in a sealed single cell housing, a cathode carrying a hydrogen evolution catalyst, and a diaphragm arranged between the metal anode and the cathode, the bottom and the top of the single cell housing are respectively provided with fluid flow channels, and both ends of the fluid flow channels are respectively provided with openings communicated with the interior and exterior of the housing. The metal anode and/or single cell housing is placed in a closed transitional housing. The transitional housing is a degradable material or can be mechanically damaged by a driving device driven and started by a control device.

Abstract: A method for processing a dialog relationship includes performing semantic feature extraction on a sample dialog text and sample statement or speaker pairs by an initial relationship prediction model, and performing relationship prediction based on the sample text semantic information and an actual statement or speaker relationship to determine a first loss based on a relationship prediction result. The method further includes performing masked speaker prediction based on the sample text semantic information to determine a second loss based on a masked speaker prediction result. The masked speaker prediction result represents a prediction of speakers masked in the sample dialog text. The method further includes performing trigger word prediction based on the sample text semantic information to determine a third loss, and training the initial relationship prediction model based on the first loss, the second loss and the third loss to obtain a dialog relationship prediction model.

Abstract: A finite element-based ore deposit drilling information processing and analysis method and device are described herein. The information processing method includes: dividing finite elements based on related information of an exploration borehole, and constructing corresponding sectional finite element plans; and performing three-dimensional (3D) spatial co-position stacking on the sectional finite element plans, and constructing scanning analytic finite element profiles through spatial analysis. According to the method, geological borehole information can be visually analyzed and presented in a sectional and layered mode, and the method has excellent practical value and indicating significance for accurate delineation of prospecting target areas, accurate mining, dressing and smelting, and structural metallogenic research.

Abstract: A method for retrieving heights of densely-covered forest canopies near power transmission lines includes: acquiring ICESat-2 LiDAR data, JL-1 image data, auxiliary data and three-dimensional information data about the power transmission lines within a target area; carrying out image preprocessing on a JL-1 image to generate a first image; screening the ICESat-2 LiDAR data according to a screening rule to obtain high-quality laser tree height data; by employing the first image, the high-quality laser tree height data and the auxiliary data, training a neural network model for retrieving a forest tree height according to an optical image and the auxiliary data; by employing the neural network model, generating a height distribution map of densely-covered trees in the target area; and calculating a height difference between a tree and a power transmission line nearest the tree to generate a hidden danger troubleshooting theme map.

Abstract: An automatic precision calculation method of a pose of a rotational linear array scanning image includes: obtaining a collection parameter of the rotational linear array scanning image and a camera intrinsic parameter; based on the above parameters, projecting the rotational linear array scanning image to its tangent plane by orthographic projection transformation to generate an equivalent frame image having the approximately same intrinsic and extrinsic parameters as the rotational linear array scanning image and calculate a coordinate of each pixel of the equivalent frame image projected onto the rotational linear array scanning image based on an inverse projection transformation calculation method; by using structure-from-motion method, automatically calculating a pose parameter of the equivalent frame image and a corresponding waypoint three-dimensional coordinate; with the pose parameter of the equivalent frame image as an initial value, obtaining an accurate imaging parameter of the rotational linear ar

Abstract: The disclosure provides a method of analyzing an influence factor for predicting a carbon dioxide concentration of any spatiotemporal position. Firstly, an atmospheric carbon dioxide spatiotemporal distribution simulation method is proposed. This simulation method constructs a simulation model simulating carbon dioxide concentration distribution of any position of a region based on machine learning algorithm in combination with carbon dioxide data of satellite observation and corresponding environmental factors; next, by use of a global sensitivity analysis method, quantitative evaluation on the importance of multiple influence factors for regional carbon dioxide distribution is achieved.

Abstract: Disclosed is an ionic conductor slurry, a preparation method therefor and an application thereof. The ionic conductor slurry comprised parts by mass: 0.05 wt %-99.98 wt % of an ionic conductor powder material, 0 wt %-2 wt % of an anti-settling agent, 0 wt %-10 wt % of a binder, 0 wt %-2 wt % of a dispersant, 0 wt %-2 wt % of an auxiliary agent, and 20 wt %-99.

Abstract: A metal seawater fuel cell includes a single cell or a battery pack which is composed of more than two single cells connected in series or in parallel or in series and parallel through circuits. The single cell has a metal anode arranged oppositely in a sealed single cell housing, a cathode carrying a hydrogen evolution catalyst, and a diaphragm arranged between the metal anode and the cathode, the bottom and the top of the single cell housing are respectively provided with fluid flow channels, and both ends of the fluid flow channels are respectively provided with openings communicated with the interior and exterior of the housing. The metal anode and/or single cell housing is placed in a closed transitional housing. The transitional housing is a degradable material or can be mechanically damaged by a driving device driven and started by a control device.

Abstract: A modified solid electrolyte membrane is disclosed, and a preparation method therefor, and a lithium battery. The modified solid electrolyte membrane includes a base membrane and a solid electrolyte layer. The solid electrolyte layer is formed by a coating slurry, the basic membrane being coated by the coating slurry, or the basic membrane being coated by the coating slurry and the coating slurry even permeating into the basic membrane. The solid electrolyte layer is formed by a NASICON type solid electrolyte material and has a particle size smaller than 1 ?m.

Abstract: A pre-lithiated film and a preparation method therefor and an application thereof. The pre-lithiated film comprises: a 1 ?m-50 ?m base film and a 0.02 ?m-100 ?m pre-lithiated coating coated on the base film; the pre-lithiated coating includes: 1 wt %-99.99 wt % of a pre-lithiated material, 0 wt %-98.99 wt % of a coating material, 0.01 wt %-10 wt % of a binder, 0 wt %-10 wt % of a conductive additive material, 0 wt %-2 wt % of a dispersing agent and 0 wt %-2 wt % of an aid. The pre-lithiated material is a material that can produce an electrochemical reaction to release lithium ions under voltage control.

Abstract: A method for processing across neural networks includes: when processing a last block of a plurality of blocks of an i-th layer of a first neural network, reading data of a first block of a plurality of blocks of a k-th layer of a second neural network from a memory; and processing the first block of the plurality of blocks of the k-th layer of the second neural network according to the data of the first block of the plurality of blocks of the k-th layer of the second neural network after processing the last block of the plurality of blocks of the i-th layer of the first neural network. 1?i?N, N is a number of layers of the first neural network; and 1?k?M, M is a number of layers of the second neural network.

Abstract: A data fixed-point method, includes: calculating a maximum output value in a first target layer of a neural network for each input sample of a plurality of input samples; selecting at least two of a plurality of maximum output values as fixed-point reference values; determining a reference integer part bit width according to each of the fixed-point reference values; and performing an accuracy test based on a preset output value total bit width and each reference integer part bit width, to determine a reference integer part bit width with a highest accuracy as an integer part bit width used by the first target layer when output values are fixed-pointed.

Abstract: The present disclosure provides an image processing method. The method includes reading R rows of data of the image into a first storage buffer, R is an integer greater than 1; upsampling and filtering the R rows of data to obtain M rows of processed data, M is the upsampling multiple in the upsampling and filtering process, and M is an integer greater than 1. The method further includes reading a next row of data of the image into the first storage buffer after processing the R rows of data, the next row of data and the original R?1 rows of data in the first storage buffer are used as the R rows of data for the next upsampling and filtering process; and outputting the M rows of processed data.