Abstract: An example wrist-worn electronic device includes a body and a wrist strap, and the body includes a middle frame, a rear cover, a latch, and a button. The rear cover covers, along a first direction, the middle frame. The rear cover includes a first through hole extending along the first direction, which connects with an inner cavity of the middle frame. The latch is disposed in the inner cavity of the middle frame, and can move, between a first position and a second position. When the latch is located in the first position, the wrist strap can be latched to the body, or when the latch is located in the second position, the wrist strap can be released from the body. The button is used to provide, when being pressed, the latch with a push force for moving from the first position to the second position.

Abstract: Provided is a method for managing a transformer core may include preliminarily obtaining a Steinmetz equation considering temperature correction factor through fitting; converting a non-sinusoidal excitation current waveform into an equivalent sinusoidal excitation current waveform for calculation, and continuing to correct the Steinmetz equation considering temperature correction factor to obtain a corrected empirical formula; and utilizing a pre-trained neural network model to process the empirical predicted value of the loss of the core and corresponding temperature, excitation current, magnetic flux density, and frequency of the excitation current to obtain a final predicted value of loss of a core to be detected. When the final predicted value of the loss exceeds a first threshold, maintenance is performed on the core to be detected; and when it exceeds a second threshold, the core to be detected is replaced.

Abstract: A silicon carbide single crystal wafer and a preparation method therefor, a silicon carbide crystal and a preparation method therefor, and a semiconductor device. The surface of the silicon carbide single crystal wafer is such that an included angle between a normal direction and a c direction is 0-8 degrees, and aggregated dislocations on the silicon carbide single crystal wafer are less than 300/cm2; the aggregated dislocation is a dislocation aggregated condition in which the distance between the geometric centers of any two corrosion pits in the corrosion pits obtained after corrosion of melted KOH is less than 80 microns. Even if the dislocation density is relatively high, the aggregated dislocation density is relatively small, thereby increasing the yield of a silicon carbide-based devices.

Abstract: Provided is a yarn spindle packaging system, a control method thereof, an electronic device and a storage medium, relating to technical field of chemical fiber intellectualization.

Abstract: A radiation exposure dose management apparatus according to an embodiment is a radiation exposure dose management apparatus that manages a radiation dose received by a subject and includes processing circuitry configured: to obtain image data of the subject; to segment the image data in accordance with organs of the subject; to generate a voxel radiation dose distribution map indicating a radiation exposure dose of each of the voxels on the basis of a specific radiation exposure dose model and the image data; and to calculate a radiation exposure dose of each of the organs on the basis of the segmented image data and the radiation exposure dose of each of the voxels within the generated voxel radiation dose distribution map.

Abstract: The present disclosure provides a method for reducing false wake-up power consumption of a device. The method includes: opening a first receipt time window, and detecting whether a preamble exists in the air, the preamble being a code-modulated preamble; if no preamble is detected in the air, controlling the device to go to sleep; if the preamble is detected in the air, controlling the device to open a second receipt time window and receive a wake-up packet; detecting whether the wake-up packet meets a preset condition; if the wake-up packet does not meet the preset condition, controlling the device to go to sleep; and if the wake-up packet meets the preset condition, controlling the device to open a third receipt time window, receive communication information, process the communication information, and go to sleep after communication information processing is completed.

Abstract: Provided are a control method of a stacker and a three-dimensional warehouse automation system, relating to the field of chemical fiber intellectualization technology. The method includes: acquiring an intermediate table in response to receiving a task allocation request sent from the stacker; recognizing images in a first lane of a three-dimensional warehouse through an image recognition model to obtain warehouse state information of warehouse locations in the first lane; determining a temporary work task of the stacker based on the intermediate table; determining, based on the warehouse state information of the warehouse locations in the first lane, a position of a target warehouse location corresponding to the temporary work task; and sending the temporary work task and the position of the target warehouse location to the stacker, so that the stacker executes the temporary work task based on the position of the target warehouse location.

Abstract: Provided is a yarn spindle packaging system, a control method thereof, an electronic device and a storage medium, relating to technical field of chemical fiber intellectualization.

Abstract: A large model-based recommendation method includes: determining description information of interested content corresponding to a target user; inputting a content to be recommended, the description information of interested content and current popular search sentences into a large model to generate at least one recommendation card corresponding to the content to be recommended, in which the recommendation card contains a recommendation word associated with the content to be recommended; obtaining a current behavior characteristic of the target user; and in response to the current behavior characteristic satisfying a display condition of the recommendation card, displaying the recommendation card corresponding to at least one content to be recommended.

Abstract: Disclosed are a material supply mechanism, a tray assembly, a 3D printer and a 3D printing method. The material supply mechanism is configured to add a printing material to a tray of the 3D printer, and includes: a conveying assembly including a storage body and a conveying member, the storage body is internally provided with a storage cavity, the storage cavity is configured to store the printing material, and the conveying member is arranged in the storage cavity; a transmission assembly connected to the conveying member in a transmission manner and configured to drive the conveying member to move in the storage cavity when driven; and an output assembly connected to the storage body and configured to guide the printing material out into the tray. The disclosure improves in the related art that it is inconvenient to add a printing material for a 3D printer.

Abstract: Provided herein are a method of preparing a Titanium:Sapphire (Ti:Sa) wafer and a photonic circuit integrated (PIC) Titanium:Sapphire (Ti:Sa) laser. The method includes depositing a titanium layer on a top surface of a first sapphire substrate; positioning a second sapphire substrate on the titanium layer, forming a face-to-face configuration with the titanium layer between the first and second sapphire substrates; annealing the first and second sapphire substrates in the face-to-face configuration, forming an annealed substrate; and polishing the annealed substrate, forming a polished substrate. The PIC-Ti:Sa laser includes a substrate; a waveguide formed on the substrate, the waveguide including a microring portion; a Ti:Sa layer formed over the microring portion of the waveguide, the Ti:Sa layer and the microring portion of the waveguide forming a microring cavity; and a laser source coupled to the waveguide. Also provided herein are methods of forming a photonic circuit integrated mode-locked Ti:Sa laser.

Abstract: A self-piercing riveting system includes a localized melting system that locally melts a target location on a metal substrate and a driver that drives a rivet into to the metal substrate after the target location is locally melted. A method of forming a joint with a self-piercing riveting system includes locally melting a target location on the at least two metal substrates. The method also includes driving a rivet into the target location, optionally with a driver, after locally melting the target location such that the rivet pierces the at least two metal substrates at the target location.

Abstract: The disclosure belongs to the technical field of integrated navigation under non-ideal conditions, and in particular relates to a robust filtering method for integrated navigation based on a statistical similarity measure (SSM). In view of the situation that there are normal beam measurement information of the DVL and beam measurement information with a large error simultaneously in a SINS/DVL tightly integrated system, and aiming at the problem that the existing robust filters of an integrated navigation system process the measurement information in a rough manner and are likely to lead to loss of normal measurement information, the disclosure proposes a novel robust filtering method based on decomposition of multi-dimensional measurement equations and the SSM.

Abstract: A paper forming mold, comprising a roller (1). A number of through micropores are formed on a wall of the roller (1), and one or more patterns and characters of a normal watermark, a white watermark, a windowed security thread, and a paper marker are carved on the wall of the roller (1). The paper forming mold has a high reproducibility for an original watermark design draft, improves consistency, clarity, three-dimensionality, detail refinement and richness of the watermark in paper, and thus enhances the anti-counterfeiting function of the watermarked paper; the service life of the paper forming mold is prolonged; and the automation level of paper forming mold manufacturing is improved, and the labor intensity is greatly reduced.

Abstract: Disclosed is a tracking and identification method for multiple vessel targets, devices, electronic device, and storage media. The method comprises: determining the current position of the vessel based on effective AIS data, and projecting it into an image to obtain the visual motion trajectory of the vessel; obtaining target detection boxes corresponding to multiple vessels based on video surveillance data; determining an occluded area based on the target detection boxes of multiple vessels at the previous time, determining the predicted detection box of the occluded area, and loading the appearance features of the predicted detection boxes as the appearance features extracted at the last time before occlusion; integrating effective AIS data from multiple vessels into video surveillance data to determine the vessel's identity. This disclosure can solve the problem of anti-occlusion tracking for vessels in complex vessel navigation scenarios such as severe occlusion and complete occlusion.

Abstract: A method is provided for real-time volumetric rendering of dynamic particles for a processing circuitry. The method includes converting particle data representing each of the dynamic particles into a density volume representing a density distribution of the respective dynamic particle distributed in a 3D space, precomputing a light distribution within the density volume representing a light value for each grid point within the density volume using ray marching from a light source, rendering the dynamic particles in real-time by computing pixel color values determined using ray marching toward a viewpoint position, the density volume, and the light distribution, and outputting a representation of the dynamic particles based on the rendering. The method also includes generating the particle data representing simulated particles composed of a simulated material by a physically-based simulation of natural phenomena, where the generated particle data may include simulated particles movement in the 3D space.

Abstract: The present disclosure provides a modulation method, apparatus, and system for imaging scanning signal synchronization. The method includes: transmitting control signals, wherein the control signals include a galvanometer driving signal, a laser scanning signal, and a camera exposure signal, the galvanometer driving signal and the camera exposure signal have a same period, and the laser scanning signal enables laser to be emitted for N times within time for enabling positive oscillation of a galvanometer in one period of the galvanometer driving signal; measuring an actual signal waveform of the galvanometer, and obtaining a noise-reduced waveform by filtering and de-noising the actual signal waveform; performing a waveform comparison detection on the noise-reduced waveform and a corresponding control waveform for the galvanometer driving signal to obtain a waveform deviation; and adjusting the control signals based on the waveform deviation and transmitting the adjusted control signals.