Abstract: A method for inverting a formation wave impedance using DAS borehole seismic data, including: acquiring an initial magnitude at a time window after the initial arrival time of seismic wavefield data in a well; mapping the initial magnitude to a relative wave impedance; and correcting the relative wave impedance to obtain an inverted wave impedance. Also provided are an apparatus for inverting a formation wave impedance using DAS borehole seismic data, a device, and a computer-readable storage medium.

Abstract: A method includes a first network device that obtains first biometric identification information of a user of a first terminal device, and sends, based on a first authentication request message that is received from a second network device and that is used to authenticate the user, the first biometric identification information to the second network device or a third network device. The first biometric identification information is used to perform identity authentication on the user of the first terminal device. According to embodiments of this disclosure, authentication on a natural person identity can be provided in communication.

Abstract: A cavity phase shifter comprises a first cavity, a first main phase shifter circuit, a first moveable phase shift component, and a first sliding linkage for the first moveable phase shift component mounted within the first cavity; and a second cavity, a second main phase shifter circuit, a second moveable phase shift component, and a second sliding linkage for the second moveable phase shift component mounted within the second cavity. The first and second cavities are arranged side by side in a horizontal direction, and first and second grooves for at least partially exposing the respective first and second sliding linkages are provided on the cavity phase shifter. The first and second grooves are arranged side by side in the horizontal direction, and a dimension of the second groove is different from a dimension of the first groove.

Abstract: A liquid-crystal-on-silicon device includes a substrate, a thermally-conductive layer, an LCOS display panel, a printed circuit layer, and a resistive heating element. The thermally-conductive layer is on the substrate and has a thermally-conductive central region surrounded by a thermally-conductive periphery region. The LCOS display panel is on the thermally-conductive central region. The printed circuit layer is on the thermally-conductive periphery region and at least partially surrounding the LCOS display panel. The resistive heating element is electrically connected to the printed circuit layer, thermally connected to the thermally-conductive periphery region. At least part of the resistive heating element is directly above or directly below the thermally-conductive periphery region.

Abstract: The invention discloses a positioning fixture for fixing an end face structure of an optical fiber splice closure, comprising a fixed clamp, where a movable clamp is connected to the fixed clamp, a locking component is disposed between the fixed clamp and the movable clamp, the fixed clamp is provided with a first groove, the movable clamp is provided with a second groove, and the first groove and the second groove cooperate to form a circular annular slot, where a slot width of the circular annular slot is greater than a thickness of the circumferential flange, the first groove and the second groove are both provided with feature lug bosses that are distributed at intervals along their respective circumferential directions and used for clamping with the circumferential flange.

Abstract: A display panel and an electronic apparatus are provided. The display panel includes a substrate, a first thin film transistor, a second thin film transistor, data lines data connecting lines, and pixel circuit groups. The first thin film transistor includes a silicon semiconductor pattern having a drain area, an active area and a source area, and a first gate. The second thin film transistor includes an oxide semiconductor pattern having a drain area, an active area and a source area, and a second gate. The data connecting lines transmit data signals to the data lines. Each pixel circuit group includes a first pixel circuit and a second pixel circuit that are at least partially symmetric with respect to an imaginary axis. The first data line and the second data line are arranged between the first pixel circuit and the second pixel circuit and are adjacent to each other.

Abstract: A module structure, a touch module, a display module and a display apparatus are provided. The module structure includes: a substrate including a base substrate, wherein the base substrate includes a functional area and a bonding area on one side of the functional area; a plurality of bonding terminals are provided in the bonding area and arranged along a first direction and each bonding terminal extends along a second direction, and at least one floating terminal is provided in the bonding area and on at least one side of the plurality of bonding terminals in the first direction; the module structure further includes a flexible circuit board, including: a plurality of first connection terminals provided corresponding to the plurality of bonding terminals, and at least one second connection terminal provided corresponding to the at least one floating terminal.

Abstract: A pixel driving circuit of the display panel includes a driving transistor and a data writing transistor. Signal lines include multiple data signal lines. The data writing transistor is coupled between a data signal line and a gate of the driving transistor. The signal lines also include multiple power signal lines. A power signal line includes a body portion and a connection portion. The connecting portion connects two adjacent body portions. The display panel also includes a substrate and a light-emitting element. The light-emitting element includes a first light-emitting element. The first light-emitting element includes a first anode. In a direction perpendicular to the plane in which the substrate is located, the first anode at least partially overlaps the data signal line, and the first anode at least partially overlaps the body portion.

Abstract: A lens cleaning method for a lawn mower is provided. The lawn mower includes a vision assembly, a drive assembly and a cleaning assembly; the vision assembly includes a lens body; a cleaning member is provided on a side of the cleaning assembly facing the lens body; the drive assembly is connected to the cleaning member and is configured to drive the cleaning member to move relative to the lens body for cleaning the lens body; the above lens cleaning method includes: when both the lawn mower and the lens body are activated, acquiring a working state of the lawn mower and a position of the lawn mower relative to a charging station, and determining whether to control the drive assembly to drive the cleaning member to move relative to the lens body for cleaning the lens body.

Abstract: A display module includes a display panel, at least one driving chip, a supporting plate and a strengthening plate. The display panel includes a display portion, a bending portion and a lead-out portion. The display portion has a display surface and a non-display surface. The at least one driving chip is mounted on a side of the lead-out portion away from the display portion. The supporting plate is located on the non-display surface of the display portion. The strengthening plate is located between the supporting plate and the lead-out portion. A depression structure is provided in at least one surface of two opposite surfaces of the strengthening plate and the supporting plate; an orthographic projection of the depression structure in the at least one surface on the lead-out portion at least partially overlaps with an orthographic projection of the at least one driving chip on the lead-out portion.

Abstract: A display panel and a display device. The display panel comprises pixel circuits and signal lines. Each pixel circuit comprises a driving transistor, a bias transistor, and a gate initialization transistor; each signal line comprises a bias signal line and a first reference signal line; the bias transistor is electrically connected between at least one of a first electrode and a second electrode of the driving transistor and the bias signal line; and the gate initialization transistor is electrically connected between a gate of the driving transistor and the first reference signal line.

Abstract: A touch display device includes a touch display panel and a touch display chip. The touch display panel includes a plurality of touch units, a plurality of first touch pins, a plurality of touch signal lines connecting the touch units to the first touch pins, and one or more touch detection pins connected to the first touch pins. The touch display chip includes a plurality of second touch pins corresponding to and connected to the first touch pins, and one or more bonding pins corresponding to and connected to the one or more touch detection pins.

Abstract: Disclosed are a lens cleaning device for a self-propelled apparatus, and a charging station for a self-propelled apparatus. The lens cleaning device for a self-propelled apparatus includes: a mounting frame; and a cleaning assembly, where the cleaning assembly is movably connected to the mounting frame, an end, far away from the mounting frame, of the cleaning assembly is provided with a cleaning member, and in a case that the cleaning member is pressed by pressing external force, at least the cleaning member moves relative to the mounting frame. The lens cleaning device for a self-propelled apparatus, and the charging station for a self-propelled apparatus can solve the problem that a self-propelled apparatus with a camera device cannot clean the camera device in the prior art. An automatic lens cleaning device and a self-propelled apparatus including the device are further disclosed.

Abstract: The present disclosure provides an image processing method, apparatus, electronic device and storage medium. The image processing method, including: preprocessing original image data to obtain first target image data; using an image conversion model, extracting local feature values and global feature values based on the first target image data, toning the local feature values and the global feature values, and acquiring target image data corresponding to the original image data based on the toned local feature values and the toned global feature values. The present disclosure may improve the accuracy of the first target image data by preprocessing; Processing using the image conversion model is more accurate and efficient than processing with the hardware. By extracting the local feature values and the global feature values, fine features and extensive features can be captured, making the image features more comprehensive.

Abstract: A display module and a display device. The display module includes a display panel, which has a display region (AA) and a light-transmitting region (BB), the light-transmitting region (BB) being provided with a light-transmitting hole (V1); a flexible cover plate, which is located on the light exit side of the display panel, and covers the display region (AA) and the light-transmitting region (BB); a transparent supporting structure, which is located on the side of the display panel facing the flexible cover plate, where the transparent supporting structure covers the light-transmitting hole (V1), and an orthogonal projection of the transparent supporting structure on the flexible cover plate and an orthogonal projection of the display panel on the flexible cover plate have an overlapping region.

Abstract: Provided are a preparation method of a piezoelectric composite material, and the application thereof. The preparation method includes: step 1, designing a curved-surface 3D printed mesh mold and forming the curved-surface 3D printed mesh mold by printing; step 2, cutting a blocky piezoelectric phase into a plurality of small piezoelectric columns; step 3, inserting the small piezoelectric columns into empty cells of the 3D printed mold; step 4, filling gaps between the piezoelectric columns and the 3D printed mold with a non-piezoelectric phase such as an epoxy resin, and curing and forming the non-piezoelectric phase; and step 5, grinding, polishing, and ultrasonically cleaning a prepared sample, and then performing an electrode coating operation on the sample to obtain a curved-surface piezoelectric composite material.

Abstract: Provided is a recombinant promoter system specifically inducing gene expression after T cell activation. Also provided is a new T cell activation-induced recombinant promoter constructed by modifying and optimizing GM-CSF, IFNg and IL2 promoters. When CAR-T cells are activated, the recombinant promoter can efficiently induce the expression of downstream genes, with the activity thereof being superior to that of a traditional NFAT-responsive promoter constructed based on a binding sequence of a nuclear factor of activated T cells. Further provided are a CAR-T cell comprising the T cell activation-induced recombinant promoter and the use thereof.

Abstract: Disclosed is a method and device for predicting inlet NOx concentration of a denitrification system in a thermal power plant considering measurement delay.

Abstract: Systems and methods are provided for notifying users about videos in a playback sequence. The systems and methods determine that a video that meets a criterion is currently available on a video server associated with a messaging client. In response to determining that the video that meets the criterion is currently available, the messaging client on the client device prefetches a sequence of videos from a recommendation engine that match a profile of a user associated with the messaging client. The recommendation engine is being used to provide sequence of videos to a video playback graphical user interface (GUI) that automatically plays back the videos in the sequence. The systems and methods determine that the video that meets the criterion is in a first position in the sequence of videos and, in response, present a notification that indicates the availability of the video on the video playback GUI.