Abstract: A method and apparatus comprising computer code configured to cause a processor or processors to determine more than one vertices in an input mesh, and group the more than one vertices in more than one group of vertices. The grouping of a respective vertex in a respective group may be based on a topological distance of the respective vertex. In embodiments, the processor or processors may also determine a set of filter coefficients for the more than one group of vertices; and signal the more than one group of vertices and the set of filter coefficients.

Abstract: A waterproof electrical connector includes a connector body and a waterproof cap. The connector body includes a mating island surrounded by a ring groove. The mating island defines a mating face and plural passageways. The passageways receive conductive terminals and penetrate through the mating face. A soft cushion is set inside the waterproof cap. The connector body includes a collar portion. The collar portion is higher than the mating face and forms an entrance cavity around the ring groove. When the cap covers the connector body, the soft cushion penetrates into the entrance cavity to press and seal the mating face.

Abstract: An eSIM-based card pool system is disclosed, the system comprising: a card pool unit comprising a plurality of eSIMs; an eSIM manager, comprising a database that stores corresponding relationships between a plurality of eSIM identifications and a plurality of eSIM addresses; and a connection manager, configured to request a first eSIM address from the eSIM manager based on a received download instruction, and write a specified eSIM profile into a first eSIM having the first eSIM address.

Abstract: In some embodiments, a method sends a set of first requests for a set of first segments of a video in a playback session. A first protocol from a plurality of protocols is specified in at least one of the set of first requests. The set of first segments is received. The method determines whether to switch from using the first protocol to a second protocol in the playback session based on receiving the set of first segments. When switching to the second protocol, the method sends a second request in the playback session, wherein the second request indicates the second protocol is to be used to send a second segment of the video.

Abstract: A method and apparatus comprising computer code configured to cause a processor or processors to obtain a coded bitstream comprising a mesh sequence of a plurality of meshes of the 3D visual content and a displacement of a local coordinate system (LCS) or a global coordinate system (GCS) of at least one mesh of the plurality of meshes, the LCS or GCS being at a vertex of the at least one mesh, determine a projection coefficient of the displacement of the LCS or GCS, the projection coefficient indicating a unit tangent vector of the LCS or GCS in a normal direction to the vertex and is based on normalizing a tangent basis vector of the LCS or GCS, and decode the mesh sequence based on the projection coefficient of the displacement.

Abstract: A semiconductor device is provided. The semiconductor device includes a semiconductor substrate, a first deep well region, at least two second well regions, at least one isolation structure and an implantation region. The first deep well region is disposed in the semiconductor substrate, wherein the first deep well region has a first conductivity type. The second well regions are disposed on the first deep well region, wherein the second well regions have a second conductivity type. The isolation structure covers a portion of the first deep well region and surrounds at least a portion of the second well regions. The implantation region is located under a top surface of the semiconductor substrate, wherein the implantation region has a discontinuous portion, and the discontinuous portion partially overlaps the first deep well region.

Abstract: A driving substrate, a light-emitting apparatus and a manufacturing method thereof, a splicing display apparatus, the driving substrate includes: a device disposing area, a bending area and a bonding area, the bending area is located between the device disposing area and the bonding area; the driving substrates located in the device disposing area, the bending area, and the bonding area include a buffer layer, a first conductive layer and a flexible dielectric layer that are stacked in sequence; the driving substrates located in the device disposing area and the bonding area further include a base plate disposed at a side of the buffer layer away from the first conductive layer, and a second conductive layer disposed at a side of the flexible dielectric layer away from the first conductive layer; and the driving substrate located in the bending area is configured to be able to bend along a bending axis.

Abstract: A unidirectional perspective film includes a first niobium oxide layer, a first silicon oxide layer, an absorption layer, a second niobium oxide layer, and a second silicon oxide layer that are sequentially disposed. The absorption layer has a thickness ranging from 8 nm to 20 nm.

Abstract: In some examples, an apparatus for mesh processing includes processing circuitry. The processing circuitry receives a first mesh frame with polygons representing a surface of an object, and determining that the first mesh frame is a non manifold type mesh in response to one or more singularity components in the first mesh frame. The processing circuitry converts the first mesh frame to a second mesh frame that is a manifold type mesh. The first mesh frame has first boundary loops that respectively correspond to second boundary loops in the second mesh frame. The processing circuitry detects the second boundary loops in the second mesh frame, and determines the first boundary loops in the first mesh frame according to the second boundary loops in the second mesh frame.

Abstract: The disclosure provides a method for monitoring a short-term voltage stability of a power system. The method includes: obtaining a topology and time series of a current power system; inputting the topology and the time series of the current power system into a trained spatial-temporal graph network model, the trained spatial-temporal graph network model being obtained by classification learning on a spatial-temporal graph network model based on a simulation sample dataset; outputting a status of the short-term voltage stability of the power system; and sending an alarm signal in response to outputting an unstable status of the short-term voltage stability of the power system.

Abstract: The present disclosure is related to systems and methods for indoor positioning. The method includes obtaining a first location of a subject at a first time point. The method also includes determining one or more motion parameters associated with the subject at least based on one or more sensors carried by the subject. The method further includes determining, based on the first location of the subject and the one or more motion parameters associated with the subject, a second location of the subject at a second time point after the first time point. The method still further includes adjusting, at least based on surroundings information associated with the subject at the second time point, the second location of the subject to determine a target location of the subject.

Abstract: The present disclosure provides a method for preparing lithium iron phosphate from ferric hydroxyphosphate, including: purifying ferrous sulfate to form a ferrous sulfate solution, adding hydrogen peroxide, phosphoric acid, an ammonium dihydrogen phosphate solution and ammonia water into the ferrous sulfate solution and then reacting to form a mixed slurry, holding the mixed slurry at a temperature for a period of time, and then washing with water and subjecting to press filtration to form ferric hydroxyphosphate precursors with different iron-phosphorus ratios; then flash drying, sintering at a high temperature, and pulverizing to obtain ferric hydroxyphosphate precursors with different iron-phosphorus ratios and different specific surface areas.

Abstract: A resin composition includes resin and inorganic filler. The resin includes liquid rubber resin, polyphenylene ether resin, and a crosslinking agent. Compared to a total of 100 parts by mass of the resin, the usage amount of the inorganic filler is at least greater than or equal to 40 parts by mass.

Abstract: The disclosure provides a polyester composite board structure and a manufacturing method thereof. The manufacturing method includes extruding a polyester layer into a board using a multi-layer extrusion equipment, and laminating a polyester film by heat using a wheel during an extrusion process.

Abstract: Embodiments of the present application provide a method and a device for controlling train formation tracking, the method comprising: obtaining a current distance between a first train and a second train in a train formation, wherein the first train is adjacent to the second train and located behind the second train; determining a target tracking mode of the first train based on the current distance, wherein the target tracking mode is one of a speed tracking mode, a distance tracking mode and a braking mode; and tracking the second train, by the first train based on the target tracking mode. Tracking efficiency is improved according to the method of the embodiments of the present application.

Abstract: A health early warning system for passengers on a train in an outdoor air polluted environment and a method thereof are provided. The system comprises an air quality monitoring station data acquisition module, a train data acquisition module, a train air pollution prediction module, and a train air environment early warning module; the air quality monitoring station data acquisition module acquires data of air quality monitoring stations and uploads the data to the train air pollution prediction module; the train data acquisition module acquires data of the train and uploads the data to the train air pollution prediction module; the train air pollution prediction module performs short-term prediction on air pollution of the train and uploads a result of the short-term prediction to the train air environment early warning module; and the train air environment early warning module performs early warning on the health of the passengers on the train.

Abstract: The present invention discloses a display panel and an electronic terminal. The display panel includes a first display region and a second display region. The second display region includes a plurality of display subregions. Each of the plurality of display subregions includes a display portion and a light-transmitting portion. Each of the plurality of display subregions includes a switch control unit, a liquid crystal layer, a transparent electrode group, and a color filter layer. The liquid crystal layer is disposed in the display portion and the light-transmitting portion. The transparent electrode group is configured to control a deflection direction of liquid crystal molecules in the liquid crystal layer, which puts the light-transmitting portion in a light-transmitting state or an opaque state.

Abstract: Disclosed is a high-precision dynamic real-time 360-degree omnidirectional point cloud acquisition method based on fringe projection. The method comprises: firstly, by means of the fringe projection technology based on a stereoscopic phase unwrapping method, and with the assistance of an adaptive dynamic depth constraint mechanism, acquiring high-precision three-dimensional (3D) data of an object in real time without any additional auxiliary fringe pattern; and then, after a two-dimensional (2D) matching points optimized by the means of corresponding 3D information is rapidly acquired, by means of a two-thread parallel mechanism, carrying out coarse registration based on Simultaneous Localization and Mapping (SLAM) technology and fine registration based on Iterative Closest Point (ICP) technology.

Abstract: Provided are a method and apparatus for displaying active friend information, an electronic device, and a storage medium. The method for displaying the active friend information includes receiving an activity information checking instruction, where the activity information checking instruction is generated when a user triggers an entry control on a message page; and displaying an active friend list, where the active friend list displays activity information of an active friend of the user, and the active friend is a friend who is online in a recent preset time period. In this manner, a process of checking the active friend information is simplified and the time spent on checking the active friend information is shortened.

Abstract: Embodiments of the present invention relate to the field of communications methods and technologies, and in particular, to a transmission method and apparatus. The transmission method includes: generating, by a first device, a sequence based on one or more transmission parameters, where the one or more transmission parameters include at least one of the following: a time domain resource type, transmission waveform indication information, subcarrier spacing indication information, device type information, service type indication information, multiple-input multiple-output MIMO parameter information, duplex mode indication information, control channel format indication information, and transmission carrier indication information; generating to-be-transmitted information by using the sequence; and sending the to-be-transmitted information. According to the transmission method and apparatus in the embodiments of the present invention, a new transmission error check mechanism is provided.