Abstract: An information management method, a device, and a medium. The information management method applied to a first terminal, including: sending an information acquisition request to a server, so that the server responds to the information acquisition request and sends visitor information to the first terminal; receiving the visitor information sent by the server; generating card information according to the visitor information; and sending the card information to an electronic card, so that the electronic card displays the card information.

Abstract: A display substrate, including: a base substrate; a plurality of gate lines and a plurality of data lines that intersect to surround a plurality of pixels; wherein each pixel includes a first thin film transistor, a second thin film transistor and a pixel electrode. A first electrode of the first thin film transistor is electrically connected to a pixel conductive layer of the pixel electrode, a second electrode of the first thin film transistor is electrically connected to a first electrode of the second thin film transistor, and a second electrode of the second thin film transistor is electrically connected to the data line. An orthographic projection of a combination of the second electrode of the first thin film transistor and the first electrode of the second thin film transistor on the base substrate at least partially overlaps with an orthographic projection of the pixel conductive layer on the base substrate.

Abstract: A method includes: obtaining a number of vehicles passing a driving road segment within a duration; determining whether the driving road segment is a sparse road segment by determining whether the number of vehicles is less than or equal to a vehicle threshold; obtaining first real-time driving data transmitted by a first vehicle the target road segment, and obtaining first driving characteristic-information of the target road segment based on the first real-time driving data; obtaining second real-time driving data transmitted by a second vehicle passing a topology road segment, and obtaining second driving characteristic-information of the target road segment based on the second real-time driving data, the topology road segment being a road segment within a target range of the target road segment; and generating road-condition information of the target road based on at least the second driving characteristic-information.

Abstract: A road condition generation method is provided for a computing device. The method includes obtaining current driving state information; based on the current driving state information, generating road condition state information according to transition information between road condition states extracted from historical road condition data and a correspondence between the road condition states and road section traffic capacity information; and outputting the road condition state information.

Abstract: A road condition generation method is provided for a computing device. The method includes obtaining current driving state information; based on the current driving state information, generating road condition state information according to transition information between road condition states extracted from historical road condition data and a correspondence between the road condition states and road section traffic capacity information; and outputting the road condition state information.

Abstract: A method is provided for obtaining road-condition information by a terminal. The method includes: obtaining first real-time driving data transmitted by a first vehicle currently passing a target road segment, and obtaining first driving characteristic-information of the target road segment based on the first real-time driving data; obtaining second real-time driving data transmitted by a second vehicle currently passing a topology road segment, and obtaining second driving characteristic-information of the target road segment based on the second real-time driving data, the topology road segment being an adjacent road segment within a target range of the target road segment; and obtaining road-condition information of the target road segment using a trained road-condition prediction model and based on the first driving characteristic-information and the second driving characteristic-information, and outputting the road-condition information.

Abstract: Disclosed are a method for a reader to provide a service, a reader and a computer storage medium. The method includes: obtaining and displaying, by a reader, at least one piece of plugin information, the plugin information including at least a plugin name; determining plugin information selected by a user from the at least one piece of plugin information, and downloading a corresponding plugin file according to the selected plugin information; and installing a plugin according to the downloaded plugin file, and invoking the plugin installed to provide a corresponding service. By enabling the reader to download a corresponding plug-in file according to plug-in information selected by a user, i.e., downloading the corresponding plug-in file according to the user's needs, the size of a reader installation package in the present disclosure can be controlled effectively, thereby saving traffic.