Abstract: Disclosed are an emotional evolution method and terminal for a virtual avatar in educational metaverse.

Abstract: Disclosed are an emotional evolution method and terminal for a virtual avatar in educational metaverse.

Abstract: Computer vision systems and methods for information extraction from inspection tag images are provided. The system receives an image of an inspection tag, detects one or more tags in the image, crops and aligns the image to focus on the detected one or more tags, and processes the cropped and aligned image to automatically extract information from the depicted inspection tag. Each tag identified by the system can be bounded by a tag-box that bounds the detected tag, and a tag quality score can be calculated for each tag-box. One or more visual features can be extracted after cropping of the image, and pixel-level prediction can be performed on the image to predict and/or correct an orientation of the image. Word-level and line-level optical character recognition (OCR) is then performed on the cropped and aligned image of the tag in order to extract a plurality of information from the tag.

Abstract: Disclosed are a semantic reasoning method and a terminal for a learning target in an education metaverse. The method includes receiving a description text of a learning target, segmenting the description text into a lexical item sequence, extracting an entry from the lexical item sequence, extracting a semantic lexical item based on the entry, and mapping the semantic lexical item into a first word vector. By capturing the semantic feature vector in the word vector, the subject and knowledge points in the learning target are obtained by reasoning, the target knowledge points of the learning target are determined and positioned, and the association relationship between the target knowledge points is obtained, so that the semantic information of the learning target can be fully mined, and the accuracy of the learning target extraction can be improved. It matches with the corresponding teaching scene based on the learning targets.

Abstract: A particulate filtering device with a multi-layer water distribution and collection structure and a method for using the same are provided. The device includes a tank where a filtering space and a back flushing expansion space are formed. An upper water distribution pipe is arranged above the back flushing expansion space and is in communication with an ozone gas-water mixing pipe. Ozone enters the back flushing expansion space through the upper water distribution pipe and mix with water for reaction. Exhaust gas is discharged from the top of the tank. Powdered activated carbon may enter the tank through the upper water distribution pipe, and is intercepted at a space above the filtering space to form an activated carbon layer, to absorb organics dissolved in the water and catalytically decompose ozone. At least three water distribution and collection pipes are arranged on a layer basis in the filtering space.

Abstract: A semiconductor component and an electronic device are structured to reduce a gate-drain parasitic capacitance of the semiconductor component. The semiconductor component includes: a substrate; a channel layer and a barrier layer that are sequentially stacked on the substrate; a source and a drain that are disposed on the barrier layer; a first gate and a second gate that are disposed on the barrier layer. The first gate and the second gate are located between the source and the drain, and the second gate is disposed between the first gate and the drain. A first gate field plate is at least partially disposed on a side that is of the first gate and that is close to the drain; and a first source field plate. The first source field plate covers the first gate field plate.

Abstract: Systems and methods for detecting and localizing manipulations of portable document format (PDF) files are provided. The system receives one or more PDF files and processes each PDF file using a plurality of check processes. Each check process includes a defined or learned weight that determines that process's level of influence on any document's overall suspicion score, as well as an opinion score for each PDF file based on unique logic and a plurality of factors related to the particular PDF file. The system can generate an overall suspicion score for the PDF file based on the results of the check processes, which can be calculated by aggregating the weight and an opinion score associated with each check process and file. The system can then determine whether the PDF file is a suspicious file using the overall suspicion score.

Abstract: In this application, a lower state of charge limit of the energy storage system may be determined based on a state of health of the energy storage system, an upper state of charge limit may be obtained based on a state of charge threshold, and the lower charging voltage limit and the upper charging voltage limit of the energy storage system may be determined based on the lower state of charge limit and the upper state of charge limit, to control the charging voltage of the energy storage system based on the lower charging voltage limit and the upper charging voltage limit.

Abstract: A battery module includes a module housing, a safety compartment, electrical assemblies, and explosion-proof structures. The safety compartment, the explosion-proof structures, and at least a part of the electrical assemblies are located outside the module housing and are located on a same side of the module housing. The explosion-proof structure includes a connection end and a pressure relief end that are disposed opposite to each other. The pressure relief end is located in the safety compartment. The pressure relief end of the explosion-proof structure is located in the safety compartment, so that a high-temperature combustible fluid from the pressure relief end flows into the safety compartment, to prevent the high-temperature combustible fluid from flowing to another position of the module housing to burn the electrical assembly. The pressure relief end of the explosion-proof structure is separated from the electrical assembly by using the safety compartment, to avoid a secondary safety accident.

Abstract: A system and method for producing a series of time-resolved magnetic resonance (MR) images is set forth. The system can perform method steps of encoding spatial information into an MRI signal by manipulating a phase of the MRI signal within an MRI system, generating and outputting a phase-encoded MRI signal over time by digitizing a plurality of time points in the MRI signal, repeating the generating and outputting step for a plurality of phase-encoded signals, each phase-encoded signal in synchrony with a trigger, producing a plurality of digitized time points, and reconstructing a series of time resolved MR images, each image of the series of MR images at one specific time point selected from the plurality of digitized time points for each phase-encoded step. Each image in the series of time-resolved MR images corresponding to a specific time point in a cyclic event.

Abstract: A charging method, a charging apparatus, and a non-transitory computer-readable storage medium. The method includes: charging a to-be-charged battery module by using a charging current in a first constant current charging phase, where charging currents in a plurality of constant current charging phases are sequentially arranged, and the charging current in the first constant current charging phase is a charging current in a non-last-order constant current charging phase; determining an expansion force of the battery module; and determining, based on the expansion force, whether to adjust a current for charging the battery module from the charging current in the first constant current charging phase to a charging current in a second constant current charging phase, where the charging current in the second constant current charging phase is a charging current in a next-order constant current charging phase of the charging current in the first constant current charging phase.

Abstract: Computer vision systems and methods for information extraction from floorplan images are provided. The system generates a multi-attributed graph representing an architectural floorplan image having nodes representing rooms of the floorplan image and connecting edges therebetween representing connectivity between the rooms. Each node of the multi-attributed graph can have multiple attributes including a type of the room, a room size, and the floor number on which room lies. Each edge can have attributes to denote a type of connectivity, such as door-based, wall-based, wall-with-window-based, and vertical connectivity where one room is located beneath another room on a separate floor of the floorplan image.

Abstract: A battery pack including fire extinguishing equipment. The fire extinguishing equipment includes a first chamber, a second chamber, and an activation line. The first chamber stores a fire extinguishing chemical agent, the second chamber stores a gas-generating chemical agent, and the activation line extends into the second chamber to be in contact with the gas-generating chemical agent. The second chamber includes a pressure relief opening, and the pressure relief opening is in communication with the first chamber, and is configured to spray the gas in the second chamber to the first chamber. The first chamber includes a discharge opening, and the discharge opening is configured to discharge the fire extinguishing chemical agent in the first chamber after the gas generated after the gas-generating chemical agent is ignited enters the first chamber.

Abstract: A battery system is provided, including a processing module and a plurality of battery modules. Each of the plurality of battery modules includes a battery management system and an electrochemical cell pack controlled by the battery management system. The processing module is configured to control the electrochemical cell pack to alternately perform a discharging or charging operation. A sum of power of battery modules other than a first battery module in the plurality of battery modules is greater than power required by a target power-supplied object, and the first battery module is any one of the plurality of battery modules. A battery management system is configured to record a target time. The processing module or the battery management system is configured to determine a state of health of the electrochemical cell pack in the first battery module based on the target time.

Abstract: This application relates to teaching applications of virtual reality technology, and provides a three-dimensional (3D) integrated teaching field system based on a flipped platform and a method for operating the same. The system includes a device deployment module, a teaching resource matching module, an acquisition and processing module and an edge computing module. The method includes spatial division of the 3D comprehensive teaching field system in an offline classroom, device deployment, edge computing, holographic display, data acquisition, motion positioning, and construction of a teaching interactive environment.

Abstract: This application relates to teaching applications of virtual reality technology, and provides a three-dimensional (3D) integrated teaching field system based on a flipped platform and a method for operating the same. The system includes a device deployment module, a teaching resource matching module, an acquisition and processing module and an edge computing module. The method includes spatial division of the 3D comprehensive teaching field system in an offline classroom, device deployment, edge computing, holographic display, data acquisition, motion positioning, and construction of a teaching interactive environment.

Abstract: A battery cover plate is provided, to resolve problems such as a signal transmission structure and sealing performance of the battery cover plate. The battery cover plate includes a plate body, a battery management unit, and a sensor assembly, wherein the plate body has an outer surface and an inner surface facing away from the outer surface. The battery management unit is disposed in the plate body, wherein a transmission structure is provided between the battery management unit and the outer surface, and the battery management unit includes a wireless communication module. The wireless communication module may perform wireless communication with the outside by using the transmission structure. The sensor assembly is connected to the battery management unit, wherein the sensor assembly is disposed in the plate body and extends out of the inner surface.

Abstract: A method for magnetic resonance imaging (MRI) performs a spoiled gradient-recalled (SPGR) MRI scan with an MRI scanner to produce MRI data; and reconstructs an MRI image from the MRI data; wherein performing the SPGR MRI scan comprises playing an interleaved-randomized spoiler (IRS) gradient after every M-th acquisition block, where M?2, and where an absolute area of the IRS gradient of each IRS is randomized between zero and a maximum gradient area achievable on the MRI scanner.

Abstract: Disclosed are a method and a terminal for generating simulated voices of virtual teachers. Real voice samples of teachers are collected and converted into text sequences, and a text emotion polarity training set and a text tone training set are constructed according to the text sequences; a lexical item emotion model is constructed based on lexical items in the text sequences and is trained by using the emotion polarity training set, and word vectors, an emotion polarity vector, and a weight parameter are obtained by training; and the similarity between the word vector and the emotion polarity vector is calculated, and emotion features are extracted according to a similarity calculation result, a conditional vocoder is constructed according to the voice styles and emotion features to generate new voices with emotion changes. The method and the terminal contribute to satisfying the application requirements of high-quality virtual teachers.

Abstract: A welding process involves a fixture for holding a workpiece and a welder, or welding electrode. The fixture imposes ultrasonic vibration on the workpiece. The welder vibrates during vibration, and is operable at a first voltage for welding and a second voltage for peening. The peening may occur while the weldmetal is crystallizing. The welding process may be a process of welding two part as together, or of filling a groove or other feature, or of applying or restoring a surface, or of applying a hard facing or ceramic to a parent metal or object. The weldmetal may be the same, or substantially the same, as the parent metal, or it may be different. The different material may be a ceramic material.