Abstract: In embodiments of the present disclosure, there is provided an assertion-based question answering manner. After a question and the related passage are obtained, an assertion answer to the question is determined based on content of the passage, and the assertion answer has a predetermined structure and represents a complete semantic meaning. Then, the assertion answer to the question may be outputted to the user. In the embodiments of the present disclosure, the question and the relevant passage are used as input, and a semi-structured assertion answer is output. The assertion answer according to embodiments of the present disclosure can provide richer semantic content than the traditional short answer, and provide a more concise expression than the traditional long answer, thereby ensuring accuracy of the answer while improving the user experience.

Abstract: A secure communication method comprising obtaining a secret code generated in response to a first communication device being paired with a second communication device, obtaining a prestored product key, generating a module key based on the secret code and the product key, randomly generating a session key, obtaining a key sequence number, auto-incrementing the key sequence number, setting a sending sequence number with an initial value of zero, generating a key frame by performing a computation on the session key and a verification authentication code of the session key using the module key, sending a data packet including the key frame, the key sequence number, the sending sequence number, and a data type to the second communication device. The data type indicates that the data packet is a key data packet.

Abstract: Disclosed is a temperature-indicating composite material product and a manufacturing method and application thereof, the temperature-indicating composite material product comprising: a porous film (1), opaque to at least a portion of visible light or opaque to at least a portion of visible light and at least a portion of ultraviolet light; and a colored composite material layer (2) located at the lower surface of the porous film (1), wherein the colored composite material layer (2) comprises a macro-molecular connecting material, a crystalline material and a colorant. Preferably, the macro-molecular connecting material is a crosslinked pressure-sensitive adhesive material, wherein the crystalline material and the colorant are dispersed in the macro-molecular connecting material, and the macro-molecular connecting material is an amorphous material or has a melting point higher than that of the crystalline material.

Abstract: A method for supervising a flight state of an unmanned aerial vehicle includes establishing a communication connection with a control terminal of the unmanned aerial vehicle, and receiving and storing an off-line flight certificate sent by the control terminal. The off-line flight certificate includes off-line flight parameters. The method further includes monitoring and restricting, in response to the unmanned aerial vehicle being in an off-line flight mode, a flight behaviour of the unmanned aerial vehicle in the off-line flight mode according to the off-line flight parameters in the off-line flight certificate.

Abstract: A device for recording user operation data for a remotely controlled vehicle includes a memory configured to record user operation data. The user operation data is associated with a specific user of the remotely controlled vehicle and includes outgoing operation commands that affect operation of the remotely controlled vehicle. The outgoing operation commands is transmitted to the remotely controlled vehicle and received via a remote controller of the remotely controlled vehicle.

Abstract: A method for monitoring an unmanned aerial vehicle (UAV) includes a processor generating a datagram based on monitoring data for a UAV-detector communication between the UAV and one or more detectors. The monitoring data indicates at least one of a location of the UAV or a location of a control station in communication with the UAV. The method further includes the processor encrypting working data for a UAV-control station communication between the UAV and the control station using an encryption key known to the control station but now known to the one or more detectors, and a transmitter transmitting the datagram along with encrypted working data. The datagram is to be received by the one or more detectors and the encrypted working data is to be received and deciphered by the control station using the encryption key.

Abstract: A device for recording user operation data for a remotely controlled vehicle includes a memory off-board the remotely controlled vehicle and a housing receiving the memory. The memory is configured to record user operation data comprising outgoing operation commands that affect operation of the remotely controlled vehicle. The outgoing operation commands are received via a remote controller of the remotely controlled vehicle and transmitted to the remotely controlled vehicle. The housing is removable from the remote controller and more resistant to destruction than the rest of the remote controller.

Abstract: The present invention provides a method for monitoring an unmanned aerial vehicle (UAV). The method may comprise: generating, with aid of one or more processors, a datagram comprising monitoring data indicating at least one of: a location of the UAV or a location of a control station in communication with the UAV; and transmitting the datagram along with working data for communication between the UAV and the control station such that datagram can be received by the one or more detectors within a range of the UAV.

Abstract: A cathode for water splitting production includes: (1) a porous substrate; and (2) an electrocatalyst affixed to the porous substrate. The electrocatalyst includes heterostructures of a first material and a second material that partially covers the first material.

Abstract: A method of controlling a transmission power of a first node configured to communicate wirelessly with one or more other nodes is described. The method may include establishing a first wireless communication link between the first node and a second node, receiving a first power adjustment value from the second node, wherein the first power adjustment value is determined based on signals transmitted by the first node over the first wireless communication link, determining a transmission power level for transmitting signals from the first node based on the received first power adjustment value, and transmitting signals from the first node over the first wireless communication link using the determined transmission power level.

Abstract: A method of providing communication coverage includes collecting a location of an unmanned aerial vehicle (UAV) while the UAV is in flight, determining a communication signal distribution in a proximity of the UAV, and determining one or more locations for arranging one or more relays based on the communication signal distribution to improve communication signal coverage along a flight path of the UAV.

Abstract: A monitoring information broadcasting method includes determining a series of transmission sessions aligned to a system time of a mobile platform. Each transmission session includes a first time period and a second time period. The first time period includes a plurality of first time slices and the second time period includes a plurality of second time slices. The method further includes performing one of broadcasting a data packet of a first type during a first active slice among the first time slices in the first time period of one of the transmission sessions or broadcasting a data packet of a second type during a second active slice among the second time slices in the second time period of the one of the transmission sessions.

Abstract: The present disclosure provides an identify authentication system. The authentication system includes an authentication terminal configured to issue an identity authentication request; and, an authentication server that is connected to the authentication terminal to receive the identity authentication request. The authentication server is configured to acquire one or more identity authentication scenarios from authentication scenarios based on the identity authentication request, and generate and transmit an authentication form after acquiring the authentication scenario. The authentication terminal is configured to submit the identity authentication information to the authentication server based on the authentication form. The identity authentication information includes basic user information and an authentication scenario image and video including a user. The authentication server is further configured to authenticate the user's identity based on the identity authentication information.

Abstract: A method for transmitting video from a movable object includes decomposing video data into a plurality of sub-video data units, encoding the plurality of sub-video data units individually to generate a plurality of coded sub-video data units, and selecting at least one of the plurality of coded sub-video data units for transmission according to one or more characteristics the sub-video data units and one or more channel conditions of a plurality of channels.

Abstract: A method is provided for controlling a movable platform. The method includes determining whether the movable platform is capable of broadcasting information indicating a relevant parameter of the movable platform. The method also includes restricting a movement of the movable platform based on a determination that the movable platform is not capable of broadcasting the information.

Abstract: A data transmitting method includes generating multiple channels of encoded data by encoding same data to be encoded according to a plurality of bit rates and selecting encoded data to be transmitted from the multiple channels of encoded data according to a channel bandwidth of a transmission channel. The encoded data to be transmitted is one of the multiple channels of encoded data that matches the channel bandwidth.

Abstract: A computer-implemented method includes receiving a feedback message including feedback information from a receiver of image data, obtaining a current frame to be encoded, encoding the current frame based at least in part on the feedback information, and transmitting the encoded current frame to the receiver.

Abstract: An image processing method includes a transmitting terminal receiving a feedback message sent by a receiving terminal. The feedback message indicates a reception state of a received image frame sent by the transmitting terminal and received by the receiving terminal before the receiving terminal sends the feedback message. The method further includes acquiring a target image frame, encoding the target image frame according to a preset error correction mechanism to generate encoding data of the target image frame in response to the feedback message indicating a reception error, and sending the encoding data of the target image frame to the receiving terminal.

Abstract: An image processing method includes obtaining a current image frame. The image processing method also includes in response to feedback information, determining a reference image frame for coding the current image frame based on the feedback information. The feedback information is transmitted by a receiver based on a variable feedback time interval, and is configured to indicate a transmission status of an image frame transmitted by a transmitter to the receiver prior to the feedback information. The image processing method also includes coding the current image frame based on an inter-frame coding and the reference image frame to generate coded data. The image processing method further includes transmitting the coded data to the receiver.

Abstract: A method for transmitting images includes obtaining image data of an image frame. The method also includes encoding the image data of the image frame to obtain first encoded image data. The method also includes determining a transmission delay of the first encoded image data. The method further includes re-encoding the image data of the image frame to obtain second encoded image data in response to determining that the transmission delay of the first encoded image data is not within a predetermined range.