Abstract: A light-emitting substrate has a display region and a peripheral region located on at least one side of the display region, the peripheral region includes a first peripheral region, and the first peripheral region and the display region are spaced apart in a first direction. The light-emitting substrate includes: a substrate; a first conductive layer disposed on the substrate, the first conductive layer including a plurality of signal lines located in the display region; an insulating layer covering the plurality of signal lines; and a second conductive layer disposed on the insulating layer. The insulating layer includes a first insulating layer and a second insulating layer sequentially stacked in a direction away from the substrate; and at least between the first peripheral region and the display region, at least part of edges of the first insulating layer exceeds an edge of the second insulating layer.

Abstract: An iron core-annular array multi-ring magnetosensitive current sensor and a current measurement method, the method comprising: using a first loop structure (101) to acquire a feedback current signal generated according to a first magnetic field signal generated by a primary side current; using a second loop structure (102) to measure a second magnetic field signal generated by the current of a wire in a coil; and using a digital processing unit (103) to calculate, according to the feedback current signal and the second magnetic field signal, the feature quantity that characterizes the current of the wire, and determining the current on the wire according to the feature quantity that characterizes the current of the wire.

Abstract: A distributed database system may include storage layer. The storage layer may partition data and store the partitioned data in a distributed database. The system may further include access layer. The access layer may receive a transaction, identify target data corresponding to the transaction, and generate a lock request to lock the target data included in the partitioned data. The system may further include lock service layer. The lock service layer may identify, based on the lock request, a lock status for the target data according to a lock record for the target data. The lock service layer may lock, in response to the lock status being in an unlocked state, the target data. The lock service layer may block, in response to the lock status being in a locked state, the lock request and store the lock request in a queue.

Abstract: A method and an apparatus for data processing are provided. Interface circuitry connects the apparatus in a distributed system. Processing circuitry generates first hash values for a first group of virtual nodes to be added into a hash ring. The first group of virtual nodes represents a first newly added device in the distributed system. Then, the processing circuitry distributes the data in the distributed system according to the hash ring that includes the first group of virtual nodes. When the distribution of the data in the distribution system fails to satisfy a uniformity requirement, the processing circuitry identifies a specific virtual node in the first group of virtual nodes that causes the distribution to fail the uniformity requirement. Then, a hash value for a makeup virtual node to replace the specific virtual node is generated to update the distribution of the data in the distributed system.

Abstract: A data storage system may obtain data, a size of the data, and a data structure type of the data. The system may allocate a memory block for the data based on the size of the data and a predetermined block size. The system may store the data in the allocated memory block. The allocated memory block may include a block attribute that includes the data and a head comprising management information corresponding to the block attribute. The management information may include a first block identifier for an antecedent memory block and a second block identifier for a succeeding memory block. The system may link, based on the data structure type, the allocated memory block to a plurality of memory blocks arranged in at least one of a block list structure or a tree structure.

Abstract: A distributed database system may include storage layer. The storage layer may partition data and store the partitioned data in a distributed database. The system may further include access layer. The access layer may receive a transaction, identify target data corresponding to the transaction, and generate a lock request to lock the target data included in the partitioned data. The system may further include lock service layer. The lock service layer may identify, based on the lock request, a lock status for the target data according to a lock record for the target data. The lock service layer may lock, in response to the lock status being in an unlocked state, the target data. The lock service layer may block, in response to the lock status being in a locked state, the lock request and store the lock request in a queue.

Abstract: A method and an apparatus for data processing are provided. Interface circuitry connects the apparatus in a distributed system. Processing circuitry generates first hash values for a first group of virtual nodes to be added into a hash ring. The first group of virtual nodes represents a first newly added device in the distributed system. Then, the processing circuitry distributes the data in the distributed system according to the hash ring that includes the first group of virtual nodes. When the distribution of the data in the distribution system fails to satisfy a uniformity requirement, the processing circuitry identifies a specific virtual node in the first group of virtual nodes that causes the distribution to fail the uniformity requirement. Then, a hash value for a makeup virtual node to replace the specific virtual node is generated to update the distribution of the data in the distributed system.

Abstract: A data storage system may obtain data, a size of the data, and a data structure type of the data. The system may allocate a memory block for the data based on the size of the data and a predetermined block size. The system may store the data in the allocated memory block. The allocated memory block may include a block attribute that includes the data and a head comprising management information corresponding to the block attribute. The management information may include a first block identifier for an antecedent memory block and a second block identifier for a succeeding memory block. The system may link, based on the data structure type, the allocated memory block to a plurality of memory blocks arranged in at least one of a block list structure or a tree structure.

Abstract: A fully-automatic verification system for intelligent electric energy meters comprises a plurality of verification units for automatic verification of the electric energy meters, main transport lines for connecting the verification units, and a verification management system for coordinating the work of the verification units. The main transport lines comprise upper transport lines for transporting boxes carrying electric energy meters to be verified to the verification units and lower transport lines for transporting the boxes carrying the electric energy meters back to the warehouse. The verification system for electric energy meters can implement fully-automatic verification, thus enhancing the efficiency and the verification accuracy.

Abstract: A fully-automatic verification system for intelligent electric energy meters comprises a plurality of verification units for automatic verification of the electric energy meters, main transport lines for connecting the verification units, and a verification management system for coordinating the work of the verification units. The main transport lines comprise upper transport lines for transporting boxes carrying electric energy meters to be verified to the verification units and lower transport lines for transporting the boxes carrying the electric energy meters back to the warehouse. The verification system for electric energy meters can implement fully-automatic verification, thus enhancing the efficiency and the verification accuracy.