Abstract: Disclosed are a beam switching method and apparatus, relating to the field of wireless communications, and used for reducing beam switching time and reducing the signaling overhead of switching. The method comprises: determining a beam that needs to be switched, and obtaining the beam identifier of a switched beam and physical random access channel (PRACH) resource indication information; and after the switching of the beam is completed, transmitting, to a network device on the time frequency resource of the switched beam indicated by the PRACH resource indication information, a PRACH signal used for indicating that the switching of the beam is completed. By means of the beam switching method, a beam switching process does not need to transmit an RRC signaling to the network device, and does not need to wait to establish an RRC connection with the network device.

Abstract: Embodiments of this application provide a keyboard and an electronic device. The keyboard is applied to the electronic device. The keyboard includes at least the following: a keyboard assembly, including a key; and a keyboard frame assembly, including an outer metal frame, an inner metal frame, and a key avoidance hole. The inner metal frame is connected to the outer metal frame, the key avoidance hole penetrates through the outer metal frame and the inner metal frame, the keyboard assembly is connected to the inner metal frame, the inner metal frame is located between the outer metal frame and the keyboard assembly, the inner metal frame is configured to carry the keyboard assembly, and the key is disposed in correspondence with the key avoidance hole. The keyboard of this application can reduce its thickness while ensuring rigidity as required, to improve portability of the keyboard.

Abstract: This application provides a housing assembly and an electronic device, and relates to the field of communication technologies. The housing assembly includes: a housing, where at least one hollowed-out portion is disposed on the housing; at least one fastening structure, where the fastening structure is fastened to the housing, and a notched portion is disposed on the fastening structure; a support structure, where at least one support hole is disposed on the support structure, at least a part of the fastening structure passes through the support hole, and a part of the support structure that is close to the support hole is fastened to a notched portion.

Abstract: A control method and a control device in a heterogeneous three-dimensional hierarchical network, and a communication system are provided. The control method includes: obtaining a coverage mode of a terminal; when the coverage mode is single-layered sub-network coverage, setting a non-ground mobile communication sub-network or a ground mobile communication sub-network corresponding to the single-layered sub-network coverage to be in a standalone operating mode or an intra-layer carrier aggregation mode; and when the coverage mode is multi-layered sub-network coverage, setting the non-ground mobile communication sub-network corresponding to the multi-layered sub-network coverage, or the ground mobile communication sub-network and the non-ground mobile communication sub-network corresponding to the multi-layered sub-network coverage, to be in a cross-layer carrier aggregation mode.

Abstract: The present disclosure relates to a detector apparatus. The detector apparatus may include a detecting module, an electronics module and a cooling assembly. The detecting module may be configured to detect radiation rays emitted from a subject and generate electrical signals in response to detection of radiation rays. The electronics module may be configured to process the electrical signals generated by the detecting module. The cooling assembly may be configured to cool the detecting module and the electronics module. The cooling assembly may include a first layer and a second layer. The first layer may be thermally connected with the detecting module, and the second layer may be thermally connected with the electronics module.

Abstract: Disclosed are beam training methods and devices. A beam training method includes: a transmitting end determining a first mapping relationship between BPL identifiers, CRIs, and transmitting beams; the transmitting end configuring a first reference signal resource for a receiving end, and transmitting configuration information of the first reference signal resource to the receiving end, the configuration information including a first BPL identifier; the transmitting end determining a first transmitting beam; the transmitting end transmitting a reference signal to the receiving end, by using the first transmitting beam within the first reference signal resource, so that the receiving end receives the reference signal on the first reference signal resource.

Abstract: Disclosed in the embodiments of the present application are a method and a device for eliminating non-line of sight (NLOS) in time of arrival (TOA) measurement values, and a terminal. The method includes: modeling a probability density of the first TOA measurement values from each base station to a terminal into a Gaussian mixture model, and selecting the TOA measurement values modeled into the Gaussian mixture model; performing NLOS identification on the selected TOA measurement values to obtain an identification label; and the identification label is used to indicate whether the selected TOA measurement values correspond to NLOS; and correcting the selected TOA measurement values according to the identification label, to eliminate errors caused by NLOS in the selected TOA measurement values.

Abstract: Provided are a 2,6-piperidinedione compound and an application thereof. Particularly provided are a compound represented by formula (II), a stereoisomer thereof, and a pharmaceutically acceptable salt thereof.

Abstract: There is provided a mono-wing aerial device which includes a housing member having disposed thereon electronic components and a power source, including a controller configured to control a thrust unit; a wing member coupled to the housing member, the wing member configured to produce aerodynamic forces for autorotation of the aerial device, the wing member comprising a first edge portion proximal to the housing member and a second edge portion distal to the housing member, wherein the wing member is coupled to the housing member at the first edge portion; and the thrust unit coupled to the wing member at the second edge portion, wherein the thrust unit is configured to generate thrust in a direction substantially tangential to a rotational plane of the wing member. There is also provided a method of forming the mono-wing aerial device.

Abstract: A middle frame includes a flat part and a first recess part that are integrally molded, where the first recess part is recessed relative to a first surface of the flat part to form a first groove, where an opening is located on the first surface; the first recess part includes a bottom wall, a first side wall, and a second side wall, where an orientation of the bottom wall is the same as that of the first surface, the first side wall and the second side wall separately intersect the bottom wall, and the first side wall is connected to the second side wall; and an opening formed by the first side wall and the second side wall is gradually enlarged in a first direction parallel to a flow direction of a die casting material in a die casting molding process of the middle frame.

Abstract: Disclosed is a compound of formula (I), and a stereoisomer, a pharmaceutically acceptable salt, a solvate, a co-crystal or a deuterated product thereof, or a pharmaceutical composition containing same, and the use thereof as a CD73 antagonist in the preparation of a drug for treating related diseases, wherein the definition of each group in formula (I) is consistent with the definition in the description.

Abstract: A method, an apparatus and a computer device for detecting an open circuit fault are provided. The sample data of the electrical signal at the primary side of the transformer in the CLLLC resonant bidirectional DC/DC converter is performed with spectrum analysis to obtain a first frequency, and whether an open circuit fault occurs in the CLLLC resonant bidirectional DC/DC converter can be determined according to the first frequency and an actual switching frequency.

Abstract: Disclosed are a signal transmission method and device. In the present application, the method includes: a base station configuring sending resources for at least two of a first signal, a second signal and a third signal, and sending the at least two signals according to the sending resources for the at least two signals, wherein in the at least two signals, the transceiving of one signal is indicated by at least one of the other signals; the first signal is a signal for at least one of the functions of synchronization, wave beam measurement, wave beam acquisition and RRM; the second signal is a signal for at least one of the functions of synchronization, fine synchronization, wave beam measurement, wave beam acquisition, RRM, CSI measurement and terminal wakeup; and the third signal is a signal for paging.

Abstract: A display panel and a display device, which relates to the field of display technology. The display panel includes an array base plate, an isolation structure, light-emitting devices, a functional layer and an encapsulation layer. The light-emitting devices, the functional layer and the encapsulation layer form microcavities, and the isolation structure isolates different light-emitting devices, so structures of the microcavities corresponding to the respective light-emitting devices of different colors can be designed differently. Compared with a solution in the related art in which the light-emitting devices of different colors employ a same device structure, light-emitting performances of the light-emitting devices of different colors can be improved.

Abstract: The present disclosure provides an image processing method, apparatus, device and storage medium. The method includes: firstly, in a first image matting mode, when an image matting operation triggered for an image to be processed is received, an image matting result corresponding to the image matting operation is obtained as a first image matting result. Then, the first image matting result is drawn on a preset canvas; a second image matting result is drawn on the preset canvas, and the second image matting result is an image matting result for the image to be processed in a second image matting mode. Furthermore, based on the first image matting result and the second image matting result on the preset canvas, an image matting effect map of the image to be processed is determined.

Abstract: A feeder link handover method, device and apparatus, and a handover method, device and apparatus for user equipment belonging to a satellite are provided. The method includes: interacting with a target gateway by a source gateway and determining a handover time instant T and/or a target cell activation time instant T?, wherein the handover time instant T is a time instant at which a previous feeder link is disconnected and establishment of a new feeder link is initiated, the target cell activation time instant T? is T+a time period ? (delta) required for the establishment of the new feeder link; initiating a feeder-link handover at the handover time instant T, and instructing a user equipment to synchronize with a target cell at the T?.

Abstract: A display back plate and a display device are provided. The display back plate includes multiple display units on a base substrate, at least one display unit includes a pixel region for displaying image and a light transmissive region allowing light to transmit; the pixel region includes a first trace layer and a second trace layer disposed in different layers along a thickness direction of the base substrate; and the pixel region further includes a first dielectric layer and a second dielectric layer between the first trace layer and the second trace layer, a ratio of a thickness of the first trace layer to that of the second trace layer is greater than 5; a sum of a thickness of the first dielectric layer and a thickness of the second dielectric layer is greater than 3 ?m, and the thickness of the first dielectric layer is less than 2 ?m.

Abstract: Systems and methods are described for creating three dimensional models of building objects by creating a point cloud from a plurality of input images, defining edges of the building object's surfaces represented by the point cloud, creating simplified geometries of the building object's surfaces and constructing a building model based on the simplified geometries. Input images may include ground, orthographic, or oblique images. The resultant model may be scaled according to correlation with select image types and textured.

Abstract: The purpose of the present invention is to provide a processing technique by which the food texture of a plant protein food and drink material and/or a plant protein food and drink can be improved. The food texture of the obtained processed product can be improved by a method for producing a processed product of a plant protein food and drink material and/or a plant protein food and drink, the method comprising a step for treating a plant protein food and drink material and/or a plant protein food and drink with a protein deamidase and a transglucosidase.

Abstract: Aspects concerning a robot system is provided comprising a ground vehicle, an aerial vehicle capable of flight, and a tether connecting the aerial vehicle to the ground vehicle, wherein the tether comprises on or more Bowden cables, each having an inner cable connected at one end to a respective motor of one or more motors of the ground vehicle and at another end to a component of the aerial vehicle, wherein the ground vehicle comprises a motor controller configured to control movement of the component of the aerial vehicle by controlling the one or more motors.