Abstract: This application discloses a node device operation method, a work status switching apparatus, a node device, and a medium, and relates to the field of network technologies. The method includes: receiving voting requests of a plurality of node devices, a quantity of the plurality of node devices being greater than half a quantity of node devices in a system; obtaining cycle length information and latest log indexes from the voting requests of the plurality of node devices if a current node device operates in a leader state; and switching a current work status from the leader state to a follower state or a candidate state if all the cycle length information in the voting requests of the plurality of node devices is greater than cycle length information of the current node device and all the latest log indexes in the voting requests of the plurality of node devices are not less than a latest log index of the current node device.

Abstract: This application relates to a shared data recovery method performed at a first node of a data sharing system. The first node obtains a first eigenvalue of a first node after receiving a recovery request carrying a first block height; broadcasts the first eigenvalue to at least one second node and recovery indication information to the at least one second node. After determining, based on the first eigenvalue and a plurality of second eigenvalues, that data in shared data stored by all nodes of the data sharing system is consistent, the first node recovers data within a range of the first block height in the shared data after receiving a preset quantity of a plurality of pieces of recovery indication information, thereby ensuring consistency and security of data included in a block, and reducing pressure on a node of the data sharing system to store the shared data.

Abstract: The present disclosure discloses a distributed system and a message processing method. The distributed system includes a client and a plurality of nodes. The client includes processing circuitry that is configured to send a message including a digital signature of the client. The distributed system is in a first consensus mode for reaching a consensus on the message. The processing circuitry obtains results from a subset of the nodes that receive the message. The results have respective digital signatures of the subset of the nodes. After verifying the digital signatures of the subset of the nodes, the processing circuitry of the client determines, based on the results, whether one or more of the nodes in the distributed system is malfunctioned.

Abstract: A method, system and computer readable medium are provided. The method includes receiving a service processing request from a user client, the service processing request being generated according to a table structure provided by a data sharing system, and including service data and signature information of the service data. The service data and the signature information are extracted from the service processing request according to the table structure that is prestored. A service data recording request of the data sharing system is generated, the service data recording request including the service data and the signature information. The service data recording request is sent to one or more nodes in the data sharing system for obtaining and storing the service data and the signature information at the one or more nodes.

Abstract: The present disclosure discloses an information storage method performed at a server.

Abstract: The present invention provides a vehicle-mounted device, a method for activating the vehicle-mounted device, and a vehicle-mounted system. The vehicle-mounted system includes a vehicle-mounted device, a data center, and a service platform. The vehicle-mounted device not only can be locally activated according to an activating information corresponding to an identity information of the vehicle-mounted device which indicates an unique identity of the vehicle-mounted device, but also can be remotely activated through wireless communication. Moreover, the vehicle-mounted system further includes application sub-modules which can provide extended/added functions. Therefore, by the method for activating a vehicle-mounted device provided by the present invention, the vehicle-mounted device can be activated in time, so that the information resources can be more easily and conveniently obtained by the user.

Abstract: The present invention provides a intelligent data center based on a service platform for vehicle-mounted devices, including: a static data storage unit, adapted for storing static data relating to a vehicle-mounted device; a static data processing unit, adapted for processing the static data stored in the static data storage unit; a dynamic data storage unit, adapted for storing dynamic data which are relating to the vehicle-mounted device and acquired by the service platform for vehicle-mounted devices; and a data analysis unit, adapted for analyzing the static data and the dynamic data. The intelligent data center can provide a wide variety of services for the vehicle-mounted device through the service platform.

Abstract: A vehicle information system includes: a vehicle-mounted device, a network processing device and a service center which is adapted for providing service for the vehicle-mounted device. A service configuration channel is configured between the network processing device and the service center and is adapted for transmitting configuration data which are adapted for configuring service that is provided for the vehicle-mounted device. The service configuration channel is established on basis of connection to internet. A service channel system is configured between the vehicle-mounted device and the service center. A complete solution for providing information service may be provided by the vehicle information system, thereby improving the quality of user experience while using a vehicle.

Abstract: A vehicle information system includes: a vehicle-mounted device, a voice service system and a service center which is adapted for providing service data. A first service channel system is configured between the voice service system and the vehicle-mounted device, and adapted for transmitting voice data. A second service channel is configured between the voice service system and the service center, and adapted for transmitting configuration data which is adapted for configuring the service data that are provided for the vehicle-mounted device. And the second service channel is established on basis of connection to internet. A third service channel system is configured between the service center and the vehicle-mounted device. A complete solution for providing real-time information service may be provided by the vehicle information system, thereby improving the quality of user experience while using a vehicle.

Abstract: The present invention provides compositions and methods for alleviating physical discomfort and/or pain-related conditions in a subject, comprising one or more ingredients that improve blood circulation, one or more ingredients that reduce pain and one or more ingredients that enhance bone health. The ingredients are selected from synthetic compounds, natural products, natural ingredients, extracts from natural ingredients, or combinations thereof. The compositions of the invention are particularly useful in alleviating musculoskeletal pain and nerve related pain.

Abstract: A method for analyzing wavefront sensing images as an array of focus spots comprise obtaining a wavefront sensing image of an optical object such as an eye using a Hartmann-Shack wavefront sensor, determining at least one average distance between the neighboring focus spots in the wavefront images. The method for analyzing wavefront sensing images further includes calculating a sphero-cylindrical error, detecting the focus spots of the wavefront image automatically, calculating the wavefront slopes at an array of sampling locations, and reconstructing the wave aberration of the tested optical object from the measured wavefront slopes using a least-squares estimator. The least-squares estimator includes a modal wavefront reconstruction using Zernike polynomials with a Zernike order larger than 10 and less than or equal to the number of sampling points along one axis in the sampled area.