Abstract: A line current iM(k0) of an M side of a first direct-current transmission line is collected at a moment k0. A line current iM(k0?ts) thereof is collected at k0?ts. At a moment k0, a differential value diM(k0) of a current of the side of the first direct-current transmission line is calculated according to the line current iM(k0) and the line current iM(k0?ts). It is determined whether the differential value diM(k0) of the current meets a protection enabling criteria. If so, direct-current protection for the M side of the first direct-current transmission line is enabled. A line current iM(j) of the M side of the first direct-current transmission line is collected at a moment j. A line current iM(j?ts) thereof is collected at a moment j?ts. A differential value diM(j) of the current of the M side of the first direct-current transmission line at the moment j is calculated according to the line current iM(j) and the line current iM(j?ts).

Abstract: An image processing method, includes: detecting a first operation used to select a photographing mode; determining a current photographing mode based on the detected first operation; displaying a display interface used to select a field of view; detecting a second operation used to select options of at least two fields of view; determining at least two fields of view corresponding to the current photographing mode based on the detected second operation; detecting a third operation used for photographing; obtaining a plurality of images corresponding to the at least two fields of view based on the detected third operation; and synthesizing the plurality of images to form a first image, and displaying the first image. According to the image processing method provided in this application, requirements of a large field of view and fine details can be considered.

Abstract: Embodiments of this application disclose an augmented reality communication method. A specific solution is: sending, by a first electronic device, AR communication request information to a second electronic device, to request to perform AR communication with the second electronic device; establishing, by the first electronic device, an AR communication link with the second electronic device; and displaying, by the first electronic device on a touchscreen, a first AR communication interface including an image of a first real scenario and a first AR model and a second AR model, where in an AR communication process, the first AR model makes a corresponding expression and action based on an expression and action of a first user that are obtained by the first device, and the second AR model makes a corresponding expression and action based on an expression and action of a second user that are obtained by the first device.

Abstract: An image processing method, includes: detecting a first operation used to select a photographing mode; determining a current photographing mode based on the detected first operation; displaying a display interface used to select a field of view; detecting a second operation used to select options of at least two fields of view; determining at least two fields of view corresponding to the current photographing mode based on the detected second operation; detecting a third operation used for photographing; obtaining a plurality of images corresponding to the at least two fields of view based on the detected third operation; and synthesizing the plurality of images to form a first image, and displaying the first image. According to the image processing method provided in this application, requirements of a large field of view and fine details can be considered.

Abstract: A method includes: obtaining, by a first electronic device, a photographing instruction; determining location information of to-be-photographed content corresponding to the photographing instruction or a photographing mode according to the photographing instruction, and determining, a camera at the most suitable location for photographing the to-be-photographed content from at least two cameras controllable by the first electronic device as a target camera, where the at least two cameras include a camera on the first electronic device and a camera of a second electronic device, and the first electronic device is different from the second electronic device; and controlling, by the first electronic device, the target camera to execute the photographing instruction to obtain image data acquired by the target camera.

Abstract: A story album display method and apparatus, and relate to the field of communications technologies, so that a thematic story album can be generated. The method includes: aggregating, by a terminal, N images in a gallery based on a first dimension, where the first dimension includes a photographing time and/or a photographing location, and N>1; and removing, by the terminal, an invalid image from the N images, to obtain the story album comprising the M images, wherein the invalid image comprises an image with an invalid label, or one or more images with an image similarity greater than a threshold; and displaying, by the terminal, an album cover of a story album, where the story album includes M images in the N images, the M images are associated with a theme of the story album, and M<N.

Abstract: The disclosure herein discloses a general method for the synthesis of FeCoNiCu-based high-entropy alloy and their application for electrocatalytic water splitting, belonging to the technical field of preparation of composite materials. The catalytic material for electrolysis of water includes a reaction active material and a support. The reaction active material is FeCoNiCu-based high-entropy alloy nanoparticles such as FeCoNiCuSn, FeCoNiCuMn, FeCoNiCuV or the like. The support is a carbon nanofiber material prepared by electrospinning. The catalytic material for electrolysis of water prepared in the disclosure herein has a high specific surface area, which facilitates diffusion of the electrolyte and desorption of gas. By using the catalytic material for electrolysis of water, hydrogen and oxygen can be produced under alkaline conditions, and the hydrogen production rate under high voltage is much higher than that of a 20% Pt/C electrode.

Abstract: The present disclosure describes methods, systems, and devices adjusting multimedia playing progress. In one implementation, a method includes playing, by a terminal, a multimedia file; receiving, by the terminal, a user input indicating a fast-forward operation that is for a playing progress of the multimedia file and that is input by a user; obtaining, by the terminal, a fast-forward record of the multimedia file; and automatically adjusting, by the terminal, the playing progress of the multimedia file according to the fast-forward record.

Abstract: Embodiments of this application disclose an augmented reality communication method. A specific solution is: sending, by a first electronic device, AR communication request information to a second electronic device, to request to perform AR communication with the second electronic device; establishing, by the first electronic device, an AR communication link with the second electronic device; and displaying, by the first electronic device on a touchscreen, a first AR communication interface including an image of a first real scenario and a first AR model and a second AR model, where in an AR communication process, the first AR model makes a corresponding expression and action based on an expression and action of a first user that are obtained by the first device, and the second AR model makes a corresponding expression and action based on an expression and action of a second user that are obtained by the first device.

Abstract: The present disclosure describes methods, systems, and devices adjusting multimedia playing progress. In one implementation, a method includes playing, by a terminal, a multimedia file; receiving, by the terminal, a user input indicating a fast-forward operation that is for a playing progress of the multimedia file and that is input by a user; obtaining, by the terminal, a fast-forward record of the multimedia file; and automatically adjusting, by the terminal, the playing progress of the multimedia file according to the fast-forward record.

Abstract: A three-dimensional (3D) display method and system for #D display, the method including detecting a viewing angle of a user for a display screen, determining an angle of 3D projection based on the viewing angle, and performing, based on the angle of 3D projection, 3D display of content that needs to be displayed.

Abstract: The present disclosure describes methods, systems, and devices adjusting multimedia playing progress. In one implementation, a method includes playing, by a terminal, a multimedia file; receiving, by the terminal, a user input indicating a fast-forward operation that is for a playing progress of the multimedia file and that is input by a user; obtaining, by the terminal, a fast-forward record of the multimedia file; and automatically adjusting, by the terminal, the playing progress of the multimedia file according to the fast-forward record.

Abstract: A story album display method and apparatus, and relate to the field of communications technologies, so that a thematic story album can be generated. The method includes: aggregating, by a terminal, N images in a gallery based on a first dimension, where the first dimension includes a photographing time and/or a photographing location, and N>1; and removing, by the terminal, an invalid image from the N images, to obtain the story album comprising the M images, wherein the invalid image comprises an image with an invalid label, or one or more images with an image similarity greater than a threshold; and displaying, by the terminal, an album cover of a story album, where the story album includes M images in the N images, the M images are associated with a theme of the story album, and M<N.

Abstract: The present disclosure describes methods, systems, and devices adjusting multimedia playing progress. In one implementation, a method includes playing, by a terminal, a multimedia file; receiving, by the terminal, a user input indicating a fast-forward operation that is for a playing progress of the multimedia file and that is input by a user; obtaining, by the terminal, a fast-forward record of the multimedia file; and automatically adjusting, by the terminal, the playing progress of the multimedia file according to the fast-forward record.

Abstract: A self-inflating tire assembly includes an air tube mounted within a tire sidewall groove. The air tube is in contacting engagement with opposite angled groove surfaces surrounding the air tube. A segment of the air tube is flattened from an expanded diameter to a flat diameter by bending and compression of the groove in a rolling tire footprint to force air evacuated from the flattened segment along a tube air passageway. The sidewall groove extends into an annular, axially extending, sidewall surface such as an axially oriented surface of a tire chafer protrusion located in non-contacting relationship with the rim. The air tube is extruded from a rubber composition, the rubber composition comprising: a diene based rubber; from 0.

Abstract: A three-dimensional (3D) display method and system for #D display, the method including detecting a viewing angle of a user for a display screen, determining an angle of 3D projection based on the viewing angle, and performing, based on the angle of 3D projection, 3D display of content that needs to be displayed.

Abstract: A self-inflating tire assembly includes an air tube mounted within a tire sidewall groove. The air tube is in contacting engagement with opposite angled groove surfaces surrounding the air tube. A segment of the air tube is flattened from an expanded diameter to a flat diameter by bending and compression of the groove in a rolling tire footprint to force air evacuated from the flattened segment along a tube air passageway. The sidewall groove extends into an annular, axially extending, sidewall surface such as an axially oriented surface of a tire chafer protrusion located in non-contacting relationship with the rim. The opposite groove surfaces comprise a rubber composition, the rubber composition comprising: a diene based rubber; from 0.

Abstract: The present invention is directed to a pneumatic tire comprising a sidewall component, the sidewall component including an air passageway extending at least partially about the circumference of the tire, the air passageway surrounded by and in fluid communication with a surface comprising a rubber composition, the rubber composition comprising: a diene based rubber; from 0.25 to 5 parts by weight, per 100 parts by weight of rubber (phr), of a self-lubrication agent capable of migrating from the rubber composition to the groove surface and disposing on the groove surface as a liquid; and from 1 to 15 parts by weight, per 100 parts by weight of rubber (phr), of a vulcanization modifier for use in the second rubber composition include ?,?-bis(N,N?-dihydrocarbylthiocarbamamoyldithio)alkanes, bismaleimides, and biscitraconimides.

Abstract: A self-inflating tire assembly includes an air tube mounted within a tire sidewall groove. The air tube is in contacting engagement with opposite angled groove surfaces surrounding the air tube. A segment of the air tube is flattened from an expanded diameter to a flat diameter by bending and compression of the groove in a rolling tire footprint to force air evacuated from the flattened segment along a tube air passageway. The sidewall groove extends into an annular, axially extending, sidewall surface such as an axially oriented surface of a tire chafer protrusion located in non-contacting relationship with the rim. The air tube is extruded from a rubber composition, the rubber composition comprising: a diene based rubber; from 0.

Abstract: Various disclosed embodiments include methods and systems for operating a wireless electronic device having one or more antennas. The method comprises monitoring at least one parameter of a signal received from a remote transmitter. The method includes determining that the at least one parameter meets a first threshold and performing, at the wireless electronic device, a probing operation. The probing operation includes performing an antenna switching operation. The probing operation includes generating first signal information of the received signal prior to the antenna switching operation and generating second signal information of the received signal subsequent to the antenna switching operation. The probing operation includes determining whether the antenna switching operation achieves a desired gain based at least in part on the generated first and second signal information. The probing operation includes reversing the antenna switching operation in response to the desired gain not being achieved.