Abstract: A model prediction-based control method for grid forming of multi-port autonomous reconfigurable solar plants includes: estimating and predicting system parameters by establishing a multi-port autonomous reconfigurable solar plant and a dynamic model of a synchronous generator model; converting an objective function into an unconstrained optimization problem, using Newton's method to achieve minimum computational burden within each calculation time step to find a solution in real time for obtaining an optimal angular frequency; based on results of the optimal angular frequency, updating an output voltage and a dq-axis current of the multi-port autonomous reconfigurable solar plant, and changing an arm modulation index of the plant, thereby realizing the plant's inertia and primary frequency modulation support. The model prediction-based control method provided by the present invention achieves rapid prediction during operation and improves frequency response, rapidity and system stability.

Abstract: An R-tree index merging and updating method and apparatus based on a Hilbert curve, and a medium. The method comprises: S1, acquiring a first R-tree to be merged and a second R-tree into which the first R-tree is to be inserted; S2, querying a node for insertion, for each merged leaf node in a leaf node level of the first R-tree by means of a “top to bottom” hierarchical query algorithm; S3, inserting, according to an order of the Hilbert values, spatial objects included in each leaf node in the first R-tree into the node for insertion that is determined in S2, thereby merging the two R-trees; and S4, for the second R-tree after merging, updating information stored in each node level by level according to an order from a leaf node to a root node.

Abstract: The present invention generally relates to inherently wettable silicone hydrogel contact lenses having relatively high oxygen permeability, relatively high equilibrium water content and relatively low elastic modulus. The present invention is also related to a method for making such inherently wettable silicone hydrogel contact lenses.

Abstract: Systems, methods and devices for a computer vision-based pixel-level rail components detection system using an improved one-stage instance segmentation model and prior knowledge, aiming to inspect railway components in a rapid, accurate, and convenient fashion.

Abstract: An adapter is provided. The adapter is installed on a cartridge that is detachably arranged on a main body of an image forming apparatus, the image forming apparatus including an accommodation cavity, a conductive unit, a matching unit, and an electric signal responding unit. The adapter includes an electric signal triggering assembly configured to electrically connect with the conductive unit and trigger the electric signal responding unit to obtain a predetermined responding signal, when the electric signal triggering assembly is installed on the cartridge and the cartridge is installed to the predetermined position in the accommodation cavity. The predetermined responding signal is configured to determine whether an installation of the cartridge meets an expectation.

Abstract: An adapter is installed on a cartridge detachably disposed on a main body of an image forming apparatus. The main body includes a first conductive contact and a protective structure. The protective structure is disposed on a rear frame of the main body. The protective structure includes a protective element. When the cartridge is not inserted into the main body, the protective element is in a first position to protect the first conductive contact. The cartridge includes a housing, an accommodation part, and a second conductive contact. The accommodation part is disposed on the housing. The second conductive contact is used to electrically connect with the first conductive contact. The adapter includes a pressing element that is used to cooperate with the protective structure.

Abstract: This application provides a communication method in a dual-connectivity mode. In the communication method, maximum transmit power used by a terminal device to send a message corresponding to a main network protocol in a semi-persistent power sharing mode is maximum transmit power 2, maximum transmit power used by the terminal device to send a message corresponding to a secondary network protocol is maximum transmit power 3, the maximum transmit power 2 is less than theoretical maximum transmit power corresponding to the main network protocol, and the maximum transmit power 3 is greater than the theoretical maximum transmit power corresponding to the main network protocol.

Abstract: A letter download query method may include a terminal sending a letter download query request packet to a satellite network device, where the letter download query request packet includes a service type field and a message ID field, the service type field indicates a service type of the letter download query request packet, and the message ID field indicates an ID of a letter successfully received by the terminal last time. The terminal receives a letter download query result packet from the satellite network device, where the letter download query result packet includes an original letter sending time field and a letter content field, the original letter sending time field indicates original sending time of letter content in the letter content field, and the letter content field indicates letter content from one or more target terminals to the terminal.

Abstract: In an outbound transmission control method, a satellite network device segments an application layer packet into a plurality of Message Data Convergence Protocol (MDCP) protocol data units (PDUs) at an MDCP layer. The satellite network device sequentially delivers the MDCP PDUs to a satellite link control (SLC) layer as SLC service data units (SDUs) at the SLC layer, and segments the SLC SDU into N SLC PDUs at the SLC layer. SLC PDUs of one or more users are obtained at a physical layer (PHY) from the SLC layer. The SLC PDUs of the one or more users are spliced together at the PHY to form outbound data of a physical slot with a fixed length. The satellite network device in turn sends the outbound data to one or more terminals.

Abstract: In accordance with an embodiment, a method includes: encoding, by a first terminal at a satellite link control (SLC) layer, a first user identification (ID) of the first terminal into binary first data, wherein the first user ID comprises second data and third data, the binary first data includes binary fourth data and binary fifth data, the binary fourth data is obtained by encoding sixth data, the sixth data is obtained by compressing the second data, a data length of the sixth data is less than that of the second data, and the binary fifth data is obtained by encoding the third data; filling, by the first terminal at the SLC layer, the binary first data in a user ID field in frame header information of a first user frame; and sending, by the first terminal, the first user frame to a satellite network device.

Abstract: A transmit power control method includes obtaining an uplink-downlink configuration (uplink (UL)/downlink (DL) assignment) from a network side and determining a power decrease that can be reduced in the uplink-downlink configuration compared with that in an all-uplink configuration when and uplink time proportion configured in the uplink-downlink configuration is not 100% and the uplink-downlink configuration is not the all-uplink configuration.

Abstract: An optical module includes a housing, a circuit board assembly, an optical assembly, and an optical receptacle. The housing includes first and second housings and an optical fiber adapter. The circuit board assembly includes a rigid circuit board. The optical assembly is fixed on the first housing and includes an optical processing assembly and photoelectric chips. The optical processing assembly includes a wavelength division multiplexer, a lens group located between the wavelength division multiplexer and the photoelectric ship, and a lens group located between the wavelength division multiplexer and the optical receptacle. The photoelectric chips are close to the rigid circuit board and are electrically connected to the rigid circuit board. The optical fiber adapter is arranged at an optical interface of the housing and is integrally formed with the optical interface.

Abstract: A transmission method includes generating, by a first device, a first authentication code based on first information, a first key, and first data. The first information includes at least one of sending time information or first context information. The method further includes generating, by the first device, a first data packet based on the first authentication code and the first data. The method further includes sending, by the first device, the first data packet, the first device being part of a first transmission system.

Abstract: Embodiments of this application disclose a channel measurement method and device. The method includes: receiving, by an access network device, a sounding reference signal (SRS) from a terminal device; receiving, by the access network device from the terminal device, a power adjustment factor used by first antenna ports, where the first antenna ports are antenna ports used by the terminal device to send a data signal; determining, by the access network device, a first uplink channel based on the SRS; and determining, by the access network device, a target channel based on the first uplink channel and the power adjustment factor used by the first antenna ports, where the target channel is a target uplink channel or a target downlink channel.

Abstract: The present specification discloses video matching. In a computer-implemented method, a plurality of feature vectors of a target video is obtained. A candidate video similar to the target video is retrieved from a video database based on the plurality of feature vectors of the target video. A time domain similarity matrix feature map is constructed between the target video and the candidate video based on the target video and the candidate video. Using the time domain similarity matrix feature map as an input into a deep learning detection model, a video segment matching the target video in the candidate video and a corresponding similarity is output.

Abstract: Examples in this application disclose information sharing methods, media, and systems. One example computer-implemented method includes receiving, by a trusted execution environment (TEE), a first sharing request from a first institution and a second sharing request from a second institution, where the first sharing request comprises a user identity of a first user and first anti-money laundering (AML) risk information and the second sharing request comprises a user identity of a second user and second AML risk information, comparing the user identity of the first user with the user identity of the second user, in response to that the user identity of the first user is the same as the user identity of the second user, combining the first AML risk information and the second AML risk information, and sending the combined first AML risk information and second AML risk information to the first institution and the second institution.

Abstract: A three-section synchronous slide rail, which has simple structure, longer service life, is easy to install and replace is provided, which includes: two sets of slide rail assemblies which comprise a fixed rail, a middle rail and a sliding rail, synchronization components comprising a flexible deflector unit and a roller, the flexible deflector unit is connected with the fixed rail and the sliding rail, the middle rail is connected with a rope base, a first end of the flexible deflector unit is wound around a first end of the rope base and fixed to the rope base, and a second end of the flexible deflector unit bypasses the roller and is reversely wound on a second end of the rope base and the second end of the flexible deflector unit is fixed to the rope base, a connecting rod is connected between the rope bases.

Abstract: A vertical displacement stopping system includes a sliding guide mechanism, a locking mechanism and a bearing mechanism. The locking mechanism, having positioning holes, includes positioning pins, telescopic mechanisms, and a handle located at a front portion of the bearing mechanism, wherein the handle is connected with the positioning pins through transmission parts, respectively. Each of the telescopic mechanisms includes a housing having a chamber, a movable block located within the chamber, and a reset spring located between a top portion of the movable block and the housing, wherein each of the transmission parts is connected with each of the positioning pins through the movable block.

Abstract: The terminal displays a satellite-searching guide interface, where the satellite-searching guide interface includes a satellite identifier, a display location of the satellite identifier on the satellite-searching guide interface indicates a location relationship between the terminal and a target satellite; the terminal updates the display location of the satellite identifier in response to an operation that a user moves the terminal; and if a location relationship between the moved terminal and the target satellite meets a message transmission condition, the terminal sends a satellite message to the target satellite or receives a satellite message from the target satellite.

Abstract: An improved electric slide rail includes a motor driving device and two slide rail assemblies symmetrically arranged. Every slide rail assembly includes a slide rail and a fixed rail, wherein the slide rail is slidably sleeved on the fixed rail, a rack housing is sleeved on an outer side of the fixed rail, a rack is provided on the rack housing, a gear engaged with the rack is mounted on the slide rail; the motor driving device is installed on the slide rail through a fixing device and is electrically connected with a controller. The improved electric slide rail further includes a clutch which is electrically connected with the controller, wherein the clutch is arranged at a side where an output shaft of a motor of the motor driving device is provided, and is connected with the slide rail through a linkage structure.