Abstract: The present disclosure provides a method for indoor gas leakage disposal of smart gas and an Internet of Things system. The method is implemented by a smart gas indoor safety management sub platform. The method includes obtaining monitoring information and user description information from a smart gas data center, the monitoring information including alarm information and gas terminal monitoring data, the monitoring information being obtained from a smart gas object platform through a smart gas sensor network platform, the user description information including user-defined alarm information uploaded by a user, and the user description information being obtained from a smart gas user platform through a smart gas service platform; determining a cause of gas leakage based on the monitoring information and the user description information; and determining a plurality of candidate solutions based on the cause of gas leakage.

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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: Disclosed is path planning system and method for sea-aerial cooperative underwater target tracking, the method comprises: obtaining the position information of a detection target, carrying out a first path planning along a channel of sea surface monitoring device according to the position information of the detection target; carrying out a second path planning along the channel of sea surface monitoring device according to the water surface navigation map and its own position information, constructing an underwater obstacle map; performing a third path planning according to the underwater obstacle map, and tracking to the position of the detection target to complete the tracking task. This disclosure adopts the collaborative optimization of several clusters to reduce the number of iterations and improve the optimization efficiency, making the path planning reasonable, as a result, the target position can be quickly tracked, and the autonomous collaborative tracking capability is improved.

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.

Abstract: An open earphone comprising a sound production component and an ear hook is provided. The ear hook includes a first portion and a second portion. The first portion is hung between an auricle and the head of a user, the second portion extends toward a front outer side of the auricle and connects to the sound production component, and the sound production component is located close to an ear canal but does not block the ear canal opening. The open earphone and the auricle have a first projection and an eighth projection on a sagittal plane, respectively, a centroid of a portion of the first projection corresponding to the sound production component have a first distance to a highest point of the eighth projection in a vertical axis direction, and a ratio of the first distance to a height of the eighth projection is within a range of 0.35-0.