Abstract: The present application discloses a cerebral perfusion state classification apparatus and method, a device, and a storage medium. The method includes: acquiring, by a transceiving module, cervical blood flow data from an ultrasound data collecting device; determining, by a processor, cerebral perfusion data corresponding to the cervical blood flow data based on the cervical blood flow data and a mapping relationship between the cervical blood flow data and the cerebral perfusion data, and classifying cerebral perfusion states of a plurality of brain regions based on blood perfusion characteristics of the plurality of brain regions in the cerebral perfusion data.

Abstract: The disclosure provides a composite anode electrode material and a preparation method thereof, an anode electrode material and a lithium ion battery. The composite anode electrode material includes a defect-type transition metal oxide and a lithium titanate, wherein the lithium titanate is compounded with the defect-type transition metal oxide in the manner of coating and/or doping, the defect-type transition metal oxide is a secondary particle, and a transition metal element in the defect-type transition metal oxide is selected from any one of tungsten, yttrium and tin. The probability of a side reaction between the defect-type transition metal oxide and an electrolyte is greatly reduced and a volume expansion effect of an anode electrode of a battery in the process of deintercalating lithium ions is greatly reduced, thereby the lithium ion battery including the composite anode electrode material has a higher capacity retention rate after cycling.

Abstract: This application relates to the field of battery technology, and in particular, to a box assembly, a battery module, a battery, and an electrical device. The box assembly may include at least a partition piece and two end plates. In the box assembly disclosed herein, a stress relief piece may be disposed at two ends of a main body of the partition piece. The main body may be connected to the end plate by use of the stress relief piece. A corner may be formed between the stress relief piece and the main body. In this way, when the battery module is subjected to stress, at least a part of the stress can be relieved through the corner formed between the stress relief piece and the main body.

Abstract: Embodiments of the present application disclose a file directory traversal method, apparatus, device, and medium, and relate to the field of file system processing technology and cloud computing. The method may include: receiving a current directory traversal request of a terminal for a target directory; determining a directory calling identifier of the terminal by parsing the current directory traversal request; wherein, the directory calling identifier is used for uniquely representing the terminal under the target directory; determining a directory entry currently requested to be called by the terminal under the target directory, according to the current directory traversal request; and sending the determined directory entry to the terminal in accordance with the directory calling identifier.

Abstract: The embodiment of the present application discloses a file resource processing method and apparatus, a device and a medium, relates to a file system processing technology and the field of cloud computing. Herein, the file resource processing method includes the following steps of: receiving a file resource access request of a terminal, and determining a target file resource requested to be accessed by the terminal according to the file resource access request; marking the target file resource as a state of entering a grace period, in response to determining that the file resource access request belongs to a reestablishing resource state request; and executing an access operation corresponding to the file resource access request based on the target file resource, in response to determining that the file resource access request does not belong to the reestablishing resource state request.

Abstract: A distributed block storage system is provided. The distributed block storage system includes a front-end storage node and a rear-end storage node. The front-end storage node includes at least one front-end disk. The rear-end storage node includes at least one rear-end disk. The performance of reading and writing of the front-end disk is higher than that of the rear-end disk. The method includes: conducting a reading operation or a writing operation of operational data on the front-end disk according to a request of reading or a request of writing sent by a client; and transmitting the operational data between the front-end disk and the rear-end disk in response to a transmission condition being met.

Abstract: A transaction processing method, a transaction processing device, an electronic device and a readable storage medium are provided, which relate to the field of cloud service and cloud storage. The transaction processing method includes: receiving an operation request for a target shard in a directory tree of a file system, the directory tree of the file system being stored in a namespace of a distributed file system, the directory tree of the file system including a plurality of shards, each of the shards including data about a parent node identifier; converting the operation request into a transaction operation statement associated with the target shard; and processing the target shard in accordance with the transaction operation statement.

Abstract: The present disclosure provides a replica processing method based on a raft protocol. The method includes: for a node to be processed corresponding to a raft replica group, determining a replica to be cleaned corresponding to the node, the raft replica group including a first node and at least one second node; for the node, obtaining replica configuration information of the raft replica group, the replica configuration information including one or more primary replicas stored by the first node and one or more secondary replicas stored by the at least one second node; and for the node, determining whether the replica configuration information includes the replica to be cleaned, if yes, reserving the replica to be cleaned, and if no, deleting the replica to be cleaned. The present disclosure also provides a replica processing node, a distributed storage system, a server, and a computer-readable medium.

Abstract: A method, a computing device and a medium are provided. The method includes: receiving a connection request, the connection request containing authentication information; extracting the authentication information from the connection request; determining a connection authentication result based on the extracted authentication information; determining, in response to the connection authentication result indicating that the authentication is successful, authentication storage data based at least on the connection authentication result and the extracted authentication information; receiving, in response to the connection authentication result indicating that the authentication is successful, at least one service request; and executing authentication on each of the at least one service request based on the authentication storage data.

Abstract: Embodiments of the present application disclose a file directory traversal method, apparatus, device, and medium, and relate to the field of file system processing technology and cloud computing. The method may include: receiving a current directory traversal request of a terminal for a target directory; determining a directory calling identifier of the terminal by parsing the current directory traversal request; wherein, the directory calling identifier is used for uniquely representing the terminal under the target directory; determining a directory entry currently requested to be called by the terminal under the target directory, according to the current directory traversal request; and sending the determined directory entry to the terminal in accordance with the directory calling identifier.

Abstract: The embodiment of the present application discloses a file resource processing method and apparatus, a device and a medium, relates to a file system processing technology and the field of cloud computing. Herein, the file resource processing method includes the following steps of: receiving a file resource access request of a terminal, and determining a target file resource requested to be accessed by the terminal according to the file resource access request; marking the target file resource as a state of entering a grace period, in response to determining that the file resource access request belongs to a reestablishing resource state request; and executing an access operation corresponding to the file resource access request based on the target file resource, in response to determining that the file resource access request does not belong to the reestablishing resource state request.

Abstract: The present disclosure provides a replica processing method based on a raft protocol. The method includes: for a node to be processed corresponding to a raft replica group, determining a replica to be cleaned corresponding to the node, the raft replica group including a first node and at least one second node; for the node, obtaining replica configuration information of the raft replica group, the replica configuration information including one or more primary replicas stored by the first node and one or more secondary replicas stored by the at least one second node; and for the node, determining whether the replica configuration information includes the replica to be cleaned, if yes, reserving the replica to be cleaned, and if no, deleting the replica to be cleaned. The present disclosure also provides a replica processing node, a distributed storage system, a server, and a computer-readable medium.

Abstract: This disclosure provides a method, system for associating a target object with an item and a non-transitory computer-readable recording medium, and relates to the field of intelligent monitoring technology. The method is applied to a processing device, and the processing device is connected to a laser radar mounted on a rack; the method includes: acquiring sensing information obtained from that the laser radar senses the target object; determining a trigger point coordinate of the target object within the sensing range according to the sensing information; and determining an item associated with the target object according to the trigger point coordinate of the target object and a position coordinate of said each item stored in advance. This disclosure can be widely applied to many types of racks, suitable for a variety of monitoring occasions.

Abstract: This disclosure provides an automatic billing system and an automatic billing method, and relates to the field of intelligent billing technologies, the automatic billing method is executed by a billing terminal, the method includes: receiving physical information of the items to be checked out acquired by the physical information acquiring device, the physical information including weight and/or volume; receiving image information of the items to be checked out acquired by the image acquiring device; determining identity information of the items to be checked out according to the image information of the items to be checked out; verifying whether the identity information of the items to be checked out is correct according to the physical information of the items to be checked out; and if correct, proceeding to checkout of the items to be checked out.

Abstract: Disclosed are a method, an electronic device and a system for playing multiple channels of video data. The method includes: obtaining a play request for playing multiple channels of video data from a client, wherein identification information of a terminal device and identification information corresponding to the multiple channels of video data are carried in the play request; according to the identification information of the terminal device, determining the number of video layers corresponding to the terminal device; if it is determined that the number of the multiple channels of video data is greater than the number of video layers, according to the identification information corresponding to the multiple channels of video data, obtaining the same number of channels of video data as the number of video layers and picture data corresponding to remaining channels of video data, and sending the obtained data to the client. The picture data is picture representation of corresponding video data.