Abstract: A system for tracking a target object across a plurality of image frames. The system comprises a logic machine and a storage machine. The storage machine holds instructions executable by the logic machine to calculate a trajectory for the target object over one or more previous frames occurring before a target frame. Responsive to assessing no detection of the target object in the target frame, the instructions are executable to predict an estimated region for the target object based on the trajectory, predict an occlusion center based on a set of candidate occluding locations for a set of other objects within a threshold distance of the estimated region, each location of the set of candidate occluding locations overlapping with the estimated region, and automatically estimate a bounding box for the target object in the target frame based on the occlusion center.

Abstract: The present disclosure provides an acoustic device. The acoustic device may include a shell including a first accommodation cavity, a speaker configured in the first accommodation cavity. The speaker may include one or more magnetic circuit assemblies, a voice coil, a vibration assembly, and a vibration transmission plate. The one or more magnetic circuit assemblies may form a magnetic gap. One end of the voice coil may be arranged in a magnetic gap, and another end of the voice coil may be connected with the vibration assembly. The vibration assembly may be connected with the vibration transmission plate, and the vibration transmission plate may be connected with the shell.

Abstract: A method for document similarity analysis. The method includes generating a reference document content identifier for a reference document, including identifying frequently occurring terms in reference document content, encoding each frequently occurring term in a term identifier and combining the term identifiers to form the reference document content identifier associated with the reference document. The method also includes obtaining at least one document similarity value by comparing the reference document content identifier to a set of archived document content identifiers stored in a document repository.

Abstract: Provided are a video call method and a display apparatus. The display apparatus includes: a display, an audio player, a communicator, a user input interface, and a controller. The controller is configured to: control the display to present a first area and a second area on a call interface for a video call, where the first area is for presenting one or more video chatting windows, and the second area is for presenting one or more voice chatting windows; obtain a quantity Y for indicating number of parties currently participating in the video call from the sever; and in response to the quantity Y being greater than a preset quantity X of channels that the display apparatus is able to support, control the display to present X video chatting windows in the first area, and control the display to present (Y-X) voice chatting windows in the second area.

Abstract: The present disclosure discloses an earphone. The earphone may include a hook-shaped component, a connecting component, and a holding component. When the earphone is in a wearing state, the hook-shaped component may be configured to hang between a rear side of an ear of a user and a head of the user. The holding component may be configured to contact a front side of the ear. The connecting component may be configured to connect the hook-shaped component and the holding component and extend from the head to an outside of the head to cooperate with the hook-shaped component to provide the holding component with a pressing force on the front side of the ear.

Abstract: A method for cell selection is provided. The method may include the following steps. A user equipment (UE) may determine whether a current cell is a power-saving cell, a high-throughput cell or a power-saving and high-throughput cell based on a plurality of parameters configured by a network node. Then, the UE may determine whether to perform a cell selection in response to the current cell being a power-saving cell, a high-throughput cell or a power-saving and high-throughput cell.

Abstract: The application belongs to the technical field of signal acquisition, and discloses a stacked large-capacity signal acquisition and transmission system, which includes an adapter board, n acquisition boards, central control boards and a communication board sequentially laminated; where a circuit structure of each of the acquisition boards is the same; the adapter board is provided with circuit board interfaces and a plurality of first board-level connectors; an m-th acquisition board is provided with a signal acquisition and conditioning module, at least n-m+1 second board-level connectors and at least m third board-level connectors; the central control board is provided with a signal conversion module, at least one fourth board-level connector and at least one fifth board-level connector.

Abstract: A loudspeaker device includes a speaker component, a first microphone element, and a second microphone element. The speaker component includes an earphone core and a core housing. The first microphone element is disposed on a first branch circuit board of a circuit board. The second microphone element is disposed on a second branch circuit board of the circuit board. The circuit board is configured to electrically connect to an audio signal wire, a first auxiliary signal wire, and a second auxiliary signal wire of an external control circuit. The audio signal wire, the first auxiliary signal wire, and the second auxiliary signal wire are electrically and respectively connected to the earphone core, the first microphone element, and the second microphone element through the circuit board. A board surface of the second branch circuit board is tilt with respect to a board surface of the first branch circuit board.

Abstract: Embodiments of the present disclosure may provide an acoustic output device, including a first vibration element, a second vibration element, and a piezoelectric element. The piezoelectric element may drive the first vibration element and the second vibration element to generate vibration in response to an electrical signal, wherein the first vibration element may be connected to a first position of the piezoelectric element, the second vibration element may be connected to a second position of the piezoelectric element through at least a first elastic element, the second vibration element may be connected to a third position of the piezoelectric element through at least a second elastic element, and in a vibration direction of the second vibration element, a first elastic coefficient of the first elastic element may be different from a second elastic coefficient of the second elastic element.

Abstract: Methods and apparatuses for data transmission and reception are provided. The method includes: transmitting data scheduling control information by a network device to a terminal equipment; transmitting first indication information used for indicating one or more frequency-domain bandwidth resources by the network device to the terminal equipment; and receiving by the network device the uplink data transmitted by the terminal equipment.

Abstract: An apparatus and method for transmitting data of vehicle communication (V2X) services and a communication system. The apparatus includes: a first generating unit configured in a media access control (MAC) layer of the terminal equipment and configured to generate at least one protocol data unit (PDU) in a mode identical to a transmission mode to which a service data unit (SDU) contained in a PDU corresponds; and a first transmitting unit configured in the MAC layer and configured to transmit the PDU to a physical layer of the terminal equipment, and notify the transmission mode to which the PDU corresponds to the physical layer. This disclosure facilitates the physical layer to transmit data in a corresponding transmission mode. The terminal equipment may determine the transmission mode or set the transmission mode according to the indication information, and layers of the terminal equipment perform corresponding processing.

Abstract: Disclosed are a method and an apparatus for multi-round alignment of gas long-distance pipeline magnetic flux leakage internal inspection data. The method includes: identifying the primary feature point data of two sets of internal inspection data, dividing the pipeline into multiple primary pipeline sections, identifying the secondary feature points in the primary pipeline sections, aligning the secondary feature points using a segment splitting algorithm, re-aligning unaligned secondary feature points, and aligning remaining feature points and defects in the secondary pipeline sections.

Abstract: The embodiments of the present disclosure provide methods and Internet of Things systems for maintaining a low-temperature pipeline based on smart gas. The method may be implemented by a smart gas safety management platform of an Internet of Things system for maintaining the low-temperature pipeline based on smart gas. The method may include: obtaining gas data and pipeline data of each segment of a gas pipeline and weather data of a position of each segment of the gas pipeline; determining at least one target pipeline; determining icing data of the at least one target pipeline based on the gas data, the pipeline data, and the weather data; and generating a thawing instruction based on the icing data, and controlling a natural gas heating device to perform a thawing operation on the at least one target pipeline based on the thawing instruction.

Abstract: The application belongs to the technical field of signal acquisition, and discloses a stacked large-capacity signal acquisition and transmission system, which includes an adapter board, n acquisition boards, central control boards and a communication board sequentially laminated; where a circuit structure of each of the acquisition boards is the same; the adapter board is provided with circuit board interfaces and a plurality of first board-level connectors; an m-th acquisition board is provided with a signal acquisition and conditioning module, at least n?m+1 second board-level connectors and at least m third board-level connectors; the central control board is provided with a signal conversion module, at least one fourth board-level connector and at least one fifth board-level connector.

Abstract: Described herein are compounds represented by formulas (IA) or (IB) or a pharmaceutically acceptable salt thereof, pharmaceutical compositions comprising the same and methods of preparing and using the same. The variables R1, R3, R4, Y1, Y2, Ar, Z and n are as defined herein.

Abstract: A method of pretreating wastewater sludge including applying an amount of at least 0.01 g/g TSS Ca(ClO)2 to wastewater sludge to enhance digestibility of the sludge and reduce phosphorus concentration therein and then allowing sufficient time for the wastewater sludge to densify to a treated sludge having a specific resistance to filtration (SRF) of 3 to 4 (1010 m/Kg). The resulting treated sludge composition being sterilized, free of harmful bacteria, and useful as a fertilizer, particularly for growing mushrooms.

Abstract: The present disclosure provides an apparatus for audio signal output. The apparatus may include a bone conduction assembly configured to generate a bone conduction acoustic wave. The apparatus may include an air conduction assembly configured to generate an air conduction acoustic wave, the bone conduction acoustic wave and the air conduction acoustic wave may represent a same audio signal. The apparatus may include a phase difference between bone conduction acoustic wave and the air conduction acoustic wave may be smaller than a threshold. The apparatus may include a housing configured to accommodate at least a portion of the bone conduction assembly and the air conduction assembly.

Abstract: A trademark anti-counterfeiting method based on cryptography is provided, where a trademark owner prints an anti-counterfeiting code associated with a trademark image through a specific method. A verifier executes following verification process: collecting a trademark image by using a photosensitive device; measuring K feature points of collected trademark image to obtain N groups of color values; calculating M_i? and a hash value MH_i? of M_i?; using the photosensitive device to read N MH_i values, MH and MH signature values of anti-counterfeiting code, and using a public key to verify validity of MH signature value; if the MH signature value is valid, performing fusion operation on N MH_i values, determining whether result of fusion operation is MH, if so, determining that N MH_i values are valid; comparing MH_i? with MH_i one by one, and if the comparison is successful, the verification is successful, otherwise the verification fails.

Abstract: Disclosed are a method and an apparatus for multi-round alignment of gas long-distance pipeline magnetic flux leakage internal inspection data. The method includes: identifying the primary feature point data of two sets of internal inspection data, dividing the pipeline into multiple primary pipeline sections, identifying the secondary feature points in the primary pipeline sections, aligning the secondary feature points using a segment splitting algorithm, re-aligning unaligned secondary feature points, and aligning remaining feature points and defects in the secondary pipeline sections.

Abstract: Multi-player co-located AR experiences are augmented by assigning characters and costumes to respective participants (a.k.a. “users” of AR-enabled mobile devices) in multi-player AR sessions for storytelling, play acting, and the like. Body tracking technology and augmented reality (AR) software are used to decorate the bodies of the co-located participants with virtual costumes within the context of the multi-player co-located AR experiences. Tracked bodies are distinguished to determine which body belongs to which user and hence which virtual costume belongs to which tracked body so that corresponding costumes may be assigned for display in augmented reality. A host-guest mechanism is used for networked assignment of characters and corresponding costumes in the co-located multi-player AR session. Body tracking technology is used to move the costume with the body as movement of the assigned body is detected.