Abstract: A computer-implemented method of map data processing, comprising generating, for a grid-based representation of map data, raw grid features; building a grid map by reading from a memory that stores the raw grid features; and processing the grid map using one or more post-processing operations including a smoothing operation applied across zero or more grid lines of the grid map according to a rule.

Abstract: An optically addressable pixelated spatial light modulator, comprising: a laser light source, a structured light field encoding projection module, and a superpixel metasurface device. The structured light field encoding projection module comprises a structured light field encoding module, which encodes a laser beam emitted by a laser light source into a structured light beam according to the modulation amount distribution of a target light field. The superpixel metasurface device comprises a plurality of unit cell structures, with each unit cell structure serving as a light field modulation pixel point. Each unit cell structure comprises a plurality of sub-wavelength micro-nano structures, and the unit cell structure generates a light field modulation amount under the action of the structured light beam for the light field modulation.

Abstract: The present disclosure relates to extracellular vesicles comprising one or more antigens from a coronavirus (e.g., SARS-CoV-1 or SARS-CoV-2) and optionally an adjuvant. Also provided herein are methods for producing the EVs and methods for using the EVs to treat and/or prevent diseases or disorders, e.g., infectious diseases.

Abstract: In various examples, live perception from sensors of a vehicle may be leveraged to generate object tracking paths for the vehicle to facilitate navigational controls in real-time or near real-time. For example, a deep neural network (DNN) may be trained to compute various outputs—such as feature descriptor maps including feature descriptor vectors corresponding to objects included in a sensor(s) field of view. The outputs may be decoded and/or otherwise post-processed to reconstruct object tracking and to determine proposed or potential paths for navigating the vehicle.

Abstract: Provided is an array substrate, including a substrate, a plurality of gate lines, and a plurality of sub-pixels. The gate line includes a plurality of connection portions and a plurality of jumper portions, which are alternately arranged and disposed in different layers. The connection portion includes a connection line segment, a first adapter line segment, and a second adapter line segment. One end of the connection line segment is connected to the first adapter line segment, and the other end is connected to the second adapter line segment. One end of the jumper portion, between adjacent two connection portions, is connected to an end, going away from the connection line segment, of the first adapter line segment in one of the connection portions, and the other end is connected to an end, going away from the connection line segment, of the second adapter line segment in the other connection portion.

Abstract: Systems and methods are provided for a battery management system (BMS) having a protection circuit. In one example, a vehicle battery system may include the BMS, the BMS including a cutoff circuit coupled to a short-circuit protection circuit, and a battery pack, wherein the short-circuit protection circuit may include a diode array, cathodes of the diode array being coupled to a positive terminal post of the battery pack and anodes of the diode array being coupled to a negative terminal post of the battery pack. In some examples, the cutoff circuit may further be coupled to a reverse bias protection circuit including a switchable current path arranged between a control input of the cutoff circuit and an output of the cutoff circuit. In this way, the vehicle battery system may be protected from unexpected voltage conditions via the BMS redirecting and dissipating excess current away from the cutoff circuit.

Abstract: Systems and methods are provided for a battery management system (BMS) having a protection circuit. In one example, a vehicle battery system may include the BMS, the BMS including a cutoff circuit coupled to a short-circuit protection circuit, and a battery pack, wherein the short-circuit protection circuit may include a diode array, cathodes of the diode array being coupled to a positive terminal post of the battery pack and anodes of the diode array being coupled to a negative terminal post of the battery pack. In some examples, the cutoff circuit may further be coupled to a reverse bias protection circuit including a switchable current path arranged between a control input of the cutoff circuit and an output of the cutoff circuit. In this way, the vehicle battery system may be protected from unexpected voltage conditions via the BMS redirecting and dissipating excess current away from the cutoff circuit.

Abstract: The present invention relates to methods of preparing a therapeutic exosome using a protein newly-identified to be enriched on the surface of exosomes. Specifically, the present invention provides methods of using the proteins for affinity purification of exosomes. It also provides methods of localizing a therapeutic peptide on exosomes, and targeting exosomes to a specific organ, tissue or cell by using the proteins. The methods involve generation of surface-engineered exosomes that include one or more of the exosome proteins at higher density, or a variant or a fragment of the exosome protein.

Abstract: A compact rotary algae biofilm reactor includes an algae biofilm module and a light guide module. The algae biofilm module includes a plurality of rotary members and a reaction tank. In the rotary member, an algae biofilm growth carrier and a power transmission belt are wound on a driving shaft and a driven shaft. A top end of the rotary member is fixed on a fixing frame while a bottom end thereof is submerged in the reaction tank. The light guide module includes a rotatable lens holder. The rotatable lens holder is fixedly provided with a linear Fresnel lens on an upper end thereof and is provided with a light guide plate on a lower end thereof. One side of the linear Fresnel lens is provided with a step motor configured to control the linear Fresnel lens to rotate with an angle of sunlight.

Abstract: The present application provides an image processing method, an image processing device, a computer storage medium and a terminal, the image processing method includes: determining convolution kernels of at least two sizes for feature extraction; performing sparsity constraint for the determined convolution kernels of at least two sizes for feature extraction through a preset objective function; and performing feature extraction on an image based on the convolution kernels subjected to the sparsity constraint.

Abstract: Disclosed are devices, systems and methods for capturing an image. In one aspect an electronic camera apparatus includes an image sensor with a plurality of pixel regions. The apparatus further includes an exposure controller. The exposure controller determines, for each of the plurality of pixel regions, a corresponding exposure duration and a corresponding exposure start time. Each pixel region begins to integrate incident light starting at the corresponding exposure start time and continues to integrate light for the corresponding exposure duration. In some example embodiments, at least two of the corresponding exposure durations or at least two of the corresponding exposure start times are different in the image.

Abstract: An open-pit mine truck automatic dispatching system and method, which comprises a digital twin creation module and a driver terminal; the digital twin creation module creates the dispatcher digital twin, the dispatcher digital twin receives the production plan, and creates the loader digital twin, the unloading point digital twin, the truck digital twin and the transportation path digital twin according to the production plan. The driver terminal obtains the available information of loaders and trucks and sends the available information to the dispatcher digital twin; the dispatcher digital twin generates dispatching commands based on available information, schedules the loader digital twin and the truck digital twin based on the dispatching command, and updates the property information of the loader digital twin, the unloading point digital twin, the truck digital twin and the transportation path digital twin. The invention realizes the automatic dispatching of open-pit mine trucks.

Abstract: Provided in the embodiments of the present disclosure are a method and apparatus for training an image reconstruction model, a storage medium, and an electronic device. The method includes: acquiring a target teacher image reconstruction model; training, by using the target sample image set, a student image reconstruction model to be trained, and ending the training until a target loss value satisfies a second preset loss condition, so as to obtain a target student image reconstruction model, wherein the target loss value is a loss value determined according to a first loss value and a second loss value, and the second loss value is a loss value determined according to a difference value between a predicted value and a real value respectively determined by the student image reconstruction model to be trained and the target teacher image reconstruction model.

Abstract: One disclosed method involves a computing system determining a keyword of interest for an online meeting being presented via a user interface, determining that content of the online meeting corresponds to the keyword of interest, and causing, in response to the content of the online meeting corresponding to the keyword of interest, the user interface to output an indication that the content of the online meeting being presented is potentially of interest. Another disclosed method involves a computing system determining data indicative of a number of client devices, from a plurality of client devices participating in an online meeting, for which a user interface for the online meeting is presented in an active window, and causing, based at least in part on the data, a first client device, from the plurality of client devices, to output an indication that content of the online meeting being presented is potentially of interest.

Abstract: A system is disclosed including at least one memory including computer program instructions, which when executed by at least one processor, cause the system to at least generate, based on a plurality of images from a camera, a first map including a first plurality of features; generate, based on data from a light ranging sensor, a second map including a second plurality of features; and determine, based on a comparison of the first plurality of features and the second plurality of features, a position of the first map relative to the second map. A corresponding method and non-transitory computer-readable medium are also provided.

Abstract: A method for hierarchical Internet trust sharing includes dividing a network into intra-domain and inter-domain layers based on a management domain; performing authentication on a central certificate through a CA and publishing the central certificate to a blockchain; managing by the central node, a certificate of each communication node based on a real address; collecting by the central node, temporary data reported by each communication node every preset time interval, generating a trust evaluation value of each communication node based on the temporary data and forming a format file from the trust evaluation values; generating by the central node, a file digest from the format file at each preset time interval, and publishing the file digest verified by central nodes in the inter-domain to the blockchain; and automatically deleting by the blockchain, data from the time interval 1 to the time interval (N-T-1) to retain blockchain header information.

Abstract: A security guarantee method and apparatus for a full life cycle of a packet are disclosed. The method includes: in response to a data packet generated at a communication source, performing by a distributed network node, authenticity verification on a source address and an identity of the data packet; in a network forwarding process of the data packet, performing by the distributed network node, collaborative sampling on the data packet and performing credibility verification on related routing behaviors; in response to the data packet reaching a destination end, verifying by the destination end, the legality of the data packet.

Abstract: The present application provides a video processing method, a device, and a storage medium. The method includes: coding and decoding an original video to obtain a mixed resolution video, where the mixed resolution video includes a first resolution frame and a second resolution frame each corresponding to a key frame, and a third resolution frame corresponding to a non-key frame, where the first resolution frame has a resolution higher than a resolution of the second resolution frame or a resolution of the third resolution frame; and amplifying, according to the first resolution frame and the second resolution frame, the third resolution frame corresponding to the non-key frame to output an amplified video, where the amplified video includes the first resolution frame corresponding to the key frame, and an amplified target frame corresponding to the non-key frame.

Abstract: A method and an apparatus for actively defending against backdoor attacks under an edge computing scenario.

Abstract: A method for selecting a recommended node in a behavior deviation model includes: determining a candidate path starting from a delegation node to a target node based on a preset network topology; determining candidate recommended nodes passing through each candidate path, and acquiring a first behavior deviation corresponding to the target node at each candidate node; reading a second behavior deviation of each candidate recommended node from a central node in the network topology; calculating an average deviation value for the target node based on second behavior deviations and first behavior deviations; determining a candidate path with the smallest average deviation value as a target candidate path; and in response to the average deviation value of the target candidate path being less than or equal to a preset warning value, determining the candidate recommended node on the target candidate path as a recommended node.