Abstract: This application provides a power semiconductor device, which includes: a semiconductor substrate, where the semiconductor substrate is doped with a first-type impurity; an epitaxial layer, that is doped with the first-type impurity, the epitaxial layer is disposed on a surface of the semiconductor substrate, a first doped region doped with a second-type impurity is disposed on a first surface that is of the epitaxial layer and that is away from the semiconductor substrate, and a circumferential edge of the first surface of the epitaxial layer has a scribing region; a first metal layer, disposed on one side that is of the epitaxial layer and that is away from the semiconductor substrate, where the first metal layer is electrically connected to the epitaxial layer; a second metal layer, disposed on one side that is of the epitaxial layer and that is away from the semiconductor substrate; and a passivation layer.

Abstract: A method for diagnosing degradation of a fuel cell stack, including: S10, qualitatively determining a degradation type of the fuel cell stack according to a voltage-current curve of the fuel cell stack; S20, quantitatively measuring parameter values of each of individual cells of the fuel cell stack according to the degradation type, and quantitatively determining a degradation degree of each of the individual cells according to the parameter values; S30, determining a uniformity degradation degree among the individual cells of the fuel cell stack according to a non-uniformity degree of a voltage distribution of the individual cells. By qualitatively determining the degradation type of the fuel cell stack, the degradation condition of the entire fuel cell stack may be obtained.

Abstract: Involved is an isolated antigen binding protein, being capable of binding CCR8 derived from a primate animal. Further involved are a pharmaceutical composition comprising the antigen binding protein, and an application of the antigen binding protein and/or the pharmaceutical composition in the prevention and/or treatment of a tumor or a cancer.

Abstract: A method may include detecting an occurrence of a logistic exception during a fulfilment cycle of an order. An impact of the logistic exception may be determined based on a tracking model having a plurality of interconnected tracking objects. The plurality of interconnected tracking objects may include a first tracking object corresponding to the order, a second tracking object corresponding to an order item included in the order, a third tracking object corresponding to a delivery order item corresponding to the order item, a fourth tracking object corresponding to a first delivery order including the delivery order item, and a fifth tracking object corresponding to a transport event including the delivery order. One or more of the plurality of interconnected tracking objects may be updated based at least on the impact of the logistic exception. Related systems and computer program products are also provided.

Abstract: A projection screen includes an optical collimating layer and a surface diffusion layer which are arranged in sequence. A grating absorption layer for absorbing ambient light from various directions except a projection light direction is also provided between the optical collimating layer and the surface diffusion layer. The grating absorption layer includes a plurality of light-absorption ring-shaped units with different radii. The plurality of light-absorption ring-shaped units are arranged in a concentric ring. Each of the light-absorption ring-shaped units consists of a plurality of gratings arranged in the circumferential direction of the concentric ring. By taking a vertical symmetrical center line of the projection screen as a center, in a direction extending along the circumferential direction of the concentric ring to the left side and the right side of the projection screen, the distance between two adjacent gratings in the same light-absorption ring-shaped unit gradually increases.

Abstract: A fastening tool. In the fastening tool, a top part guiding matching portion engages a top part guiding portion in a sliding fit; a pressing part guiding matching portion engages a pressing part guiding portion in a sliding fit; a lever hinged to a base part; a transmission part engages a transmission part guiding slot in a sliding fit; the transmission part is driven to slide by the pressing part, and the lever is driven to rotate by the transmission part, then the top part is driven to slide out, due to a reaction force acting on the pressing part by the transmission part and the friction between the pressing part and the base part, the pressing part remains to be self-locked by friction, which can constrain the pressing part and the top part is locked.

Abstract: This specification relates to an apparatus which stores a machine-learned model including a first neural network block including multiple convolutional neural network layers, a second neural network block including at least one dilated convolutional neural network layer, and a linear transformation block. The apparatus is configured to receive input data representing in-phase and quadrature signals of an input signal that is to be amplified by a power amplifier, to process the received input data using the first neural network block of the machine learned model to generate a first neural network block output, to process the received input data using the second neural network block of the machine learned model to generate a second neural network block output, and to combine, using the linear transformation block, the first neural network block output and the second neural network block output to generate a pre-distorted signal for amplification by the power amplifier.

Abstract: The present disclosure discloses a method for automatically identifying south troughs by improved Laplace and relates to the technical field of meteorology. The method includes the following steps: acquiring grid data of a geopotential height field; calculating a gradient field of the geopotential height field in an x direction; searching for a turning point where a gradient value turned from being negative to being positive, and cleaning the gradient field; calculating a divergence of the x direction to obtain an improved Laplacian numerical value L?; performing 0,1 binarization processing on the L? to obtain a black-and-white image and a plurality of targets of potential troughs, merging the black-and-white image and the plurality of targets of the potential troughs by expansion, recovering original scale through erosion, and selecting an effective target through an angle of direction of a contour and an axial ratio.

Abstract: A computer-implemented method for generating video representations utilizing a hierarchical video encoder includes obtaining a video, wherein the video includes a plurality of frames, processing each of the plurality of frames with a machine-learned frame-level encoder model to respectively generate a plurality of frame representations for the plurality of frames, the plurality of frame representations respective to the plurality of frames determining a plurality of segment representations representative of a plurality of video segments including one or more of the plurality of frames, the plurality of segment representations based at least in part on the plurality of frame representations, processing the plurality of segment representations with a machine-learned segment-level encoder model to generate a plurality of contextualized segment representations, determining a video representation based at least in part on the plurality of contextualized segment representations, and providing the video representati

Abstract: A wear monitoring method of a polymer thrust bearing based on an ultrasonic reflection coefficient amplitude spectrum (URCAS), includes: selecting a corresponding delay block probe based on a material of a to-be-tested bearing, and setting corresponding parameters of a pulse generator; after collecting a primary echo from a surface of the delay block probe as a reference signal, placing the delay block probe in a designated region on a back of the to-be-tested bearing, and collecting time-domain echo signals from upper and lower surfaces of the bearing; establishing a propagation model of an ultrasonic signal in a polymer bearing, and calculating a theoretical URCAS based on the propagation model; calculating a measured URCAS; and constructing an objective function, and solving the objective function by using a differential evolution algorithm. A plurality of parameters of the polymer bearing is solved to meet a requirement for wear monitoring by adopting the method.

Abstract: A low-floor electric axle assembly including: an axle housing, two hub motors, two planetary gear reducers, two hubs, a brake system, two C-shaped beams, and a suspension system. Mechanical mounting of the suspension system is compatible with a conventional axle. The axle housing has a left and right symmetrical dumbbell-shaped structure configured to bear a weight of a vehicle. The hub motors are inner rotor type motors and are separately arranged at two ends of the axle housing left and right symmetrically. The hub motors are arranged coaxially with two wheels respectively. Two hub motor rotors are connected to the planetary gear reducers respectively. Each of the planetary gear reducers is a single-stage planetary gear reducer. A sun gear of each of the planetary gear reducers receives power outputted by each of the hub motor. Two planetary gear reducer housings are power output ends connected to two rims respectively.

Abstract: A fish school detection method and a system thereof, an electronic device and a storage medium are provided, the method includes inputting a to-be-detected fish school image into a fish school detection model; the fish school detection model including a feature extraction layer, a feature fusion layer and a feature recognition layer; extracting feature information of the to-be-detected fish school image based on the feature extraction layer, and determining a fish school feature map and an attention feature map based on an attention mechanism; fusing the fish school feature map and the attention feature map based on the feature fusion layer to determine a target fusion feature map; and determining a target fish school detection result based on the feature recognition layer and the target fusion feature map. Interference from environmental factors on detection results is eliminated, so as to effectively improve accuracy of the fish detection.

Abstract: The present disclosure describes techniques of metadata management for transparent block level compression. A first area may be created in a backend solid state drive. The first area may comprise a plurality of entries. The plurality of entries may be indexed by addresses of a plurality of blocks of uncompressed data. Each of the plurality of entries comprises a first part configured to store metadata and a second part configured to store compressed data. Each of the plurality blocks of uncompressed data may be compressed individually to generate a plurality of compressed blocks. Metadata and at least a portion of compressed data associated with each of the plurality of compressed blocks may be stored in one of the plurality of entries based on an address of a corresponding block of uncompressed data. A second area may be created in the backend solid state drive for storing the rest of the compressed data.

Abstract: A dual-band HP omnidirectional antenna includes an electrically small (ES) first omnidirectional loop antenna for a first band, and a second omnidirectional loop antenna for a second band. The first omnidirectional loop antenna and the second omnidirectional loop antenna are capable of operating independently in the first band and the second band. A loading effect of the second omnidirectional loop antenna adapted to suppress a higher-order mode of the first omnidirectional loop antenna.

Abstract: Disclosed is a process cartridge detachably mounted to an image forming device having a tray and force applying components. The process cartridge has a process cartridge frame, a photosensitive unit, a developing unit rotatable relative to the photosensitive unit. The process cartridge frame has a driving side and a conductive side disposed oppositely along a length direction. The driving side has a first driving force receiving portion for rotating a photosensitive drum and a second driving force receiving portion for rotating a developing roller. The developing unit has a force receiving portion for receiving force of force applying components to rotate the developing unit relative to the photosensitive unit. When the process cartridge is pushed into to the image forming device, the force receiving portion move at least in a left-and-right direction and/or an up-and-down direction relative to the frame of the process cartridge.

Abstract: The present disclosure generally relates to semiconductor processing in which an alignment mark is formed. An example is method of semiconductor processing. First and second recesses are formed in a semiconductor substrate. A conformal dielectric layer is formed in the first and second recesses and over the semiconductor substrate. A fill material is formed over the conformal dielectric layer in the first recess and over the conformal dielectric layer in the second recess. The fill material fills at least the first recess over the conformal dielectric layer. The fill material in the first and second recesses is recessed to below a top surface of the conformal dielectric layer. The recessed fill material in the first and second recesses is etched. Exposed portions of the conformal dielectric layer are etched. The second recess including the conformal dielectric layer and the recessed fill material disposed therein forms an alignment mark.

Abstract: Disclosed is a display substrate, comprising: a base substrate, multiple first pixel circuits, multiple first light-emitting elements, and at least one first signal line. The multiple first pixel circuits and the multiple first light-emitting elements are located in a first display area. At least one first pixel circuit is electrically connected to at least one first light-emitting element, and is configured to drive the at least one first light-emitting element to emit light. The at least one first signal line is configured to provide, in a first direction, a first signal for the multiple first pixel circuits. The at least one first signal comprises a first sub-signal line and a second sub-signal line that are electrically connected in parallel, the first sub-signal line is located in the first display area, and the second sub-signal line is located in a second display area.

Abstract: An ultrasound scanning control method applied to an ultrasound scanning device is provided. The ultrasound scanning device includes an execution mechanism. The execution mechanism includes a mechanical arm and a probe. The ultrasound scanning control method includes controlling the mechanical arm to drive the probe to move according to a set scanning trajectory for performing an ultrasound scanning detection on a part to be examined. Once an actual pressure value between the probe and the part to be examined in each control cycle is sensed using the force sensor, a pressure value between the probe and the part to be examined is controlled to be a constant value based on the actual pressure value.

Abstract: The invention relates to a method, a non-transitory computer-readable storage medium, and an apparatus for analyzing an algorithm designed for running on a network processing unit (NPU). The method, which is performed by a processing unit, includes: loading and executing an executable program file on a virtual machine, which includes the algorithm that can be executed by the NPU; generating an instruction classification table during an execution of the executable program file, where the instruction classification table stores information about instructions that have been executed on the virtual machine, and which instruction category each instruction is related to; and generating an execution-cost statistics table according to the instruction classification table and an instruction cost table, thereby enabling the algorithm to be optimized according to content of the execution-cost statistics table.

Abstract: Provided is an optical coating for a projection screen, containing the following components in parts by weight: 2-15 parts of light-absorbing material, 5-20 parts of aluminum silver powder, 20-60 parts of acrylate oligomer, 10-45 parts of diluent, 0.5-15 parts of photoinitiator, and 0.1-6 parts of auxiliary agent; the light-absorbing material is one or more of carbon black, lamp black, iron black, and aniline black, and has an average particle size of 20-2000 nm; the aluminum silver powder is flake-shaped and has an average particle size of 3-10 ?m.