Abstract: An information display apparatus including: a memory; and a processor coupled to the memory, the processor being configured to perform processing including: analyzing transmission information to extract first analysis information with respect to the transmission information; acquiring, from among a plurality of pieces of second analysis information, second analysis information similar to the first analysis information, the plurality of pieces of second analysis information being obtained by analyzing a plurality of pieces of reliable information; comparing the first analysis information with the acquired second analysis information similar to the first analysis information; and displaying a result of the comparison and the transmission information.

Abstract: A three-dimensional scanning system includes a scanning apparatus configured to acquire first raw image data of a scanning target. The three-dimensional scanning system further includes a first field programmable gate array (FPGA) module provided in the scanning apparatus and configured to perform computational preprocessing on the first raw image data to obtain valid first feature data. The three-dimensional scanning system further includes a modeling terminal connected to the scanning apparatus and configured to perform modeling processing based on the first feature data to generate a three-dimensional model of the scanning target.

Abstract: An embodiment includes identifying, during a video conference attended by a first attendee, other attendees of the video conference. The embodiment renders a virtual meeting environment including virtual representations of the other attendees, where the rendering includes accessing relationship characteristic data indicative of relationships between the first attendee and other attendees. The embodiment calculates positions for virtual representations of the other attendees in the first attendee's virtual field of view based on the relationship characteristic data. The embodiment also detects simultaneous speech from two of the other attendees and, in response, directs the individual speech from each of the other attendees to respective audio channels.

Abstract: A wireless communication device (alternatively, device, WDEV, etc.) includes at least one processing circuitry configured to support communications with other WDEV(s) and to generate and process signals for such communications. In one example, the circuitry is configured to generate a null data packet (NDP), transmit at least a portion of the NDP to another wireless communication device via fewer than all of a plurality of sub-channels of a communication channel, and receive feedback from the another wireless communication device that is based on the another wireless communication processing the at least the portion of the NDP that is received via the fewer than all of the plurality of sub-channels of the communication channel. In one example, the generated NDP includes at least one signal field (SIG) field therein that includes information to specify a preamble puncturing option or the information is transmitted in a previous packet.

Abstract: A washer includes a conductive main body, a first seal portion, and a second seal portion. The main body includes an annular plate-shaped body and a protruding portion. The protruding portion protrudes in the thickness direction from the outer peripheral portion of the plate-shaped body. The first seal portion covers the inner peripheral surface at the inner peripheral portion and both surfaces in the thickness direction of the plate-shaped body. The second seal portion covers at least the distal end portion of the protruding portion.

Abstract: A method for data acquisition and transmission in PET may be provided. The method may include obtaining a region of interest (ROI) of an object. The method may also include determining one or more target pairs of detectors among a plurality of detectors of an imaging device based on the ROI of the object. A response of line (LOR) corresponding to each pair of the one or more target pairs of detectors may pass though the ROI when the object is located in a detection region of the imaging device. The method may further include obtaining target coincidence events corresponding to the ROI of the object based on the one or more target pairs of detectors of the imaging device.

Abstract: This application provides a method for issuing a digital certificate performed by a digital certificate issuing center that includes a public-private key generation module and an authentication module. The method includes: receiving a public-private key request from a node in a blockchain network; generating a public key and a private key of the node by using the public-private key generation module, and transmitting the public and private keys to the node; receiving the public key of the node and registration information of the node, and authenticating the registration information by using the authentication module; and generating, in accordance with a determination that the authentication succeeds, a digital certificate of the node by using the authentication module, and transmitting the digital certificate to the node. The embodiments of this application can improve the probative value of an issued digital certificate, thereby improving the security of data exchange in a blockchain network.

Abstract: A powder-based three-dimensional printing (3DP) method, device and system, and a computer-readable storage medium. The method includes: analyzing printing images of layers corresponding to a part to be printed to determine a target print image and adding a preset mark to the target print image which includes a print image of a target layer that causes a previous powder layer of the target layer to displace during printing; acquiring an image to be printed of a current layer to be printed; identifying the image to be printed to determine whether the preset mark exists on the image to be printed; and if yes, processing the current layer to be printed and/or a previous powder layer of the current layer to be printed such that the previous powder layer of the current layer does not move with powder spreading of the current layer.

Abstract: Techniques are disclosed for improved video coding with virtual reference frames. A motion vector for prediction of a pixel block from a reference may be constrained based on the reference. In as aspect, if the reference is a temporally interpolated virtual reference frame with corresponding time close to the time of the current pixel block, the motion vector for prediction may be constrained magnitude and/or precision. In another aspect, a bitstream syntax for encoding the constrained motion vector may also be constrained. In this manner, the techniques proposed herein contribute to improved coding efficiencies.

Abstract: An apparatus and a method for radio access network control are provided. A registration state is switched to a closed state and connection information is provided in reply to a base station in response to receiving first identification information of user equipment registered by the base station. In the closed state, in response to receiving second identification information registered by an enrichment information provider, a correspondence between the first and second identification information is established and stored in a mapping table, and the registration state is switched to an open state.

Abstract: The present disclosure relates to the technical field of composite coating preparation, in particular to a method for plasma-assisted and multi-step continuous preparation of a diffusion layer/amorphous carbon film composite coating and use thereof. In the present disclosure, a high-temperature plasma carburizing/nitriding technology and a low-temperature plasma carbon coating technology are combined by a plasma activation technology with argon ion under gradient cooling, and the surface of a material is activated by multiple bombardment on the surface of the material with high-energy argon ions. In this way, a cluster-like porous and loose structure on a surface of the diffusion layer is removed.

Abstract: Provided are an electromagnetic heating device, a noise suppression method, a heating control system, and a storage medium, which relate to the field of electromagnetic heating technologies. The noise suppression method includes: in response to determining that any two adjacent heating modules of the electromagnetic heating device operate successively, obtaining a start operating frequency of the last-started heating module of the two adjacent heating modules; and adjusting an operating frequency of the first-started heating module of the two adjacent heating modules based on the start operating frequency of the last-started heating module, to allow the two adjacent heating modules to operate synchronously at a same operating frequency when the last-started heating module starts operating.

Abstract: A vehicle running system based on rail transport, including a track, a framework, two levitation devices and a running device. The track is provided with a slot, in which the framework is provided. The levitation devices are provided between the track and the framework, and a top surface of the levitation device is fixedly connected to a bottom surface of the framework through a suspension structure. The running device includes two conductor plates and two running structures. The conductor plates are fixedly arranged on the inner wall of the slot, and are corresponding to the running structures. The reluctance force of magnetic wheels is converted into a driving force to drive maglev vehicles, and the levitation force is converted into a guiding force to realize the self-stabilization of vehicle guidance. A vehicle running method based on this system is also provided.

Abstract: A microelectromechanical system (MEMS) strain gauge pressure sensor includes a top wafer stack having a top surface and a first cavity that is configured to receive a first fluid at a first pressure, a backing wafer having a bottom surface opposite the top surface of the top wafer stack; a diaphragm wafer positioned between the top wafer stack and the backing wafer and having a second cavity that is configured to receive a second fluid at a second pressure, and a pedestal connected laterally to the top wafer stack, the backing wafer, and the diaphragm wafer. The diaphragm wafer includes a diaphragm extending between the first cavity and the second cavity, and a resistor positioned on the diaphragm. The MEMS strain gauge pressure sensor has a central axis such that the MEMS strain gauge pressure sensor has mechanical symmetries about the central axis.

Abstract: Disclosed herein are related to systems and methods for a multiple-input multiple-output (MIMO) communication. In one aspect, during a first time period, a master access point transmits, to a slave access point, information for a joint transmission by the master access point and the slave access point. In one aspect, the slave access point estimates synchronization information for the joint transmission, according to the information for the joint transmission. In one aspect, during a second time period after the first time period, the master access point transmits a portion of a null data packet to a station device. In one aspect, during the second time period, the slave access point transmits the portion of the null data packet to the station device, based on the synchronization information for the joint transmission. In one aspect, the station device determines steering information for the MIMO communication, according to the null data packet.

Abstract: A levitation, propulsion and guidance integrated magnetic levitation system and an improvement method of levitation and guidance. The system includes a maglev train and a maglev track. The maglev train is provided with a permanent magnet array. The maglev track is provided with a driving device and a levitation driving device in sequence along a running direction of the maglev train. An iron plate is arranged in the middle of the maglev track. The driving device accelerates the maglev train from 0 to take-off velocity. The levitation driving device provides a driving force and a levitation force for the maglev train. The iron plate enables the centered running of the maglev train.