Abstract: A blockchain-based data synchronization method, executed by a first service node, includes: acquiring target block data having a minimum block height that is greater than a first local block height, the first local block height being a maximum block height of local block data of the first service node before the first service node acquires the target block data; determining a block height of missing block data according to a block height of the target block data and the first local block height, the block height of the missing block data being less than the minimum block height of the target block data and greater than the first local block height; and requesting a target service node to synchronize the missing block data according to the block height of the missing block data.

Abstract: Embodiments of this application provide a synchronization processing method, apparatus, and device, and a medium. The method includes obtaining a skeleton set and a synchronization task set, the skeleton set being used for storing M blocks to be synchronized by the first node device, the skeleton set comprising P skeletons, the synchronization task set comprising P synchronization tasks, the P skeletons being of a one-to-one correspondence to the P synchronization tasks, and M and P both being positive integers; selecting a second node device from the candidate node set, the second node device being a candidate node device in the candidate node set; concurrently transmitting synchronization tasks in the synchronization task set to the second node device, the second node device performing the synchronization tasks and returning the M blocks; and filling the M blocks into the skeletons in the skeleton set.

Abstract: An air supply device is provided, which includes a housing with a cavity being formed therein. The air supply device further includes a partition plate, dividing the cavity of the housing into an upper cavity and a lower cavity; a flow equalizing plate, being vertically arranged in the upper cavity to divide the upper cavity into an air inlet cavity and a static pressure cavity, where a first air inlet that is communicated with the air inlet cavity being formed in the housing; an adjustable baffle plate, having a vertical height less than a vertical height of the lower cavity. The adjustable baffle plate divides the lower cavity into an induction cavity and a heat exchange cavity. The adjustable baffle plate and a top of the lower cavity form a first induced air opening. A heat exchanger is arranged in the heat exchange cavity.

Abstract: An air supply device with an annular air outlet and a design method thereof are provided. The device includes an air delivery section arranged in a horizontal plane and communicated with a plurality of air-out sections, wherein an axis of each of the plurality of air-out sections is in a vertical direction; the air delivery section and the plurality of air-out sections are respectively provided with air return ducts communicated with each other, the air return ducts each have a fresh air duct provided therein; an axis of the fresh air duct is parallel to an axis of corresponding air return duct of the air return ducts, and the fresh air duct and the corresponding air return duct are equal in length, the plurality of air-out sections are arranged above office cubicles in a room.

Abstract: An air supply device with an annular air outlet and a design method thereof are provided. The device includes an air delivery section arranged in a horizontal plane and communicated with a plurality of air-out sections, wherein an axis of each of the plurality of air-out sections is in a vertical direction; the air delivery section and the plurality of air-out sections are respectively provided with air return ducts communicated with each other, the air return ducts each have a fresh air duct provided therein; an axis of the fresh air duct is parallel to an axis of corresponding air return duct of the air return ducts, and the fresh air duct and the corresponding air return duct are equal in length, the plurality of air-out sections are arranged above office cubicles in a room.

Abstract: Aspects of the disclosure provide a method for displaying blockchain data, a blockchain browser, a user node, and a medium. The method can include transmitting a blockchain data query request, and receiving blockchain data obtained through query in response to the blockchain data query request. Further, the method can include obtaining filtered blockchain data, the filtered blockchain data being generated after illegal content in the blockchain data is filtered out based on a filtering rule, and displaying the filtered blockchain data. In embodiments of this disclosure, the display of the illegal content in the blockchain data can be automatically skipped.

Abstract: Aspects of the disclosure are directed to a method for use on a blockchain network that includes an accounting node subnetwork having accounting nodes configured to record a data block onto a blockchain and a service node having service nodes configured to verify data blocks recorded by the accounting nodes onto the blockchain. The method can include generating a signature based on transaction information to be included in a data block to be added onto the blockchain by using a key specific to the accounting node. The method can further include adding the transaction information and the generated signature to the data block and adding the data block onto the blockchain, and transmitting the signature to the service nodes in the service node subnetwork, so that the service nodes perform signature verification on the signature based on the key specific to the accounting node.

Abstract: This application provide a data management method for a blockchain system, a medium, and an electronic device. The system includes an accounting node sub-network and a service node sub-network. The method includes: adding, after an accounting node generates a first data block, first key information used for verifying a block header of a second data block generated after the first data block to a block header of the first data block; generating a signature corresponding to the first data block, and adding the signature corresponding to the first data block to the block header of the first data block; and releasing the block header of the first data block to the service node sub-network, to cause a service node to verify the signature included in the block header of the first data block, and obtaining the first key information after a successful verification to verify the block header of the second data block.

Abstract: Embodiments of this disclosure disclose a resource transfer data management method and apparatus, and a storage medium, which belong to the field of Internet technologies. The method includes: receiving transaction data transmitted by a first server, wherein the transaction data is obtained by the first server by signing resource transfer data according to a private key of the first server; verifying the transaction data according to a public key of the first server; and generating a second block according to the transaction data and a feature value of a first block in a blockchain when the verification succeeds, and adding the second block as a next block of the first block to the blockchain.

Abstract: In a transaction method, transaction information is obtained. The transaction information includes a type identifier and quantity of first assets, and a type identifier and quantity of second assets. Transaction records, corresponding to a transaction in a block, are stored upon verification of the transaction information. The transaction records include first and second transaction records. The first transaction record includes first input and output items corresponding to the first assets, and the first input and output items each includes the type identifier of the first assets. The second transaction record includes second input and output items corresponding to the second assets, and the second input and output items each includes the type identifier of the second assets. The block is broadcasted to other nodes in the blockchain network, and verification results are received. The block is added to a blockchain of a current node based on the verification results.

Abstract: A method for electing a representative node device performed by a first node device in a blockchain system includes: broadcasting candidate addition transaction data in the blockchain system, the candidate addition transaction data carrying credential data, the credential data being received from a target server and indicating that a first node device meets a qualification requirement for a candidate node device; storing the candidate addition transaction data on a target blockchain of a blockchain system when a plurality of node devices in the blockchain system verify the candidate addition transaction data by consensus; and participating in an election of the representative node device according to the candidate addition transaction data stored on the target blockchain.

Abstract: A method for electing a representative node device is performed at a blockchain system, including: obtaining voting transaction data from the node devices, the voting transaction data being used for voting for one or more node devices of the blockchain system as representative node devices; generating and storing the voting transaction data into a target blockchain of the blockchain system when a plurality of node devices of the blockchain system verify the voting transaction data by consensus; and when a quantity of blocks in the target blockchain generated using the voting transaction data reaches a preset quantity, determining an election result according to quantities of votes of the node devices determined from the voting transaction data, the election result identifying a plurality of representative node devices in the blockchain system being configured to generate new blocks for the target blockchain and perform verification on the new blocks by consensus.

Abstract: A method for electing a representative node device for a blockchain system includes: receiving IP address information of a first node device, the first node device being in a candidate state for a representative node device; receiving, from the first node device, an IP address obtaining request for requesting IP address information of a representative node device; when the first node device is determined to be a representative node device of the blockchain system elected in a current election process, transmitting, to the first node device, an IP address list comprising IP address information of representative node devices elected in the current election process; and when the first node device is determined not to be a representative node device of the blockchain system elected in the current election process, skipping the IP address obtaining request.

Abstract: The present invention provides a power information exchange method and a device, and relates to the communications field, so as to exchange actual power of a device, effectively reduce network power consumption, and improve network energy efficiency performance. The method includes: sending, by a first device, a power information request message to each second device, where the second device is a device connected to the first device, and the power information request message is used to instruct each second device to measure actual power of the second device; and receiving, by the first device, a power information reply message sent by each second device, where the power information reply message carries the actual power of the second device sending the power information reply message, and the power information request message carries type information of the actual power and format information of the actual power.

Abstract: Embodiments of the present invention provide a resource allocation method and apparatus. A central control node determines a target backhaul node for a normal small cell from M candidate backhaul nodes and communication link resource information between the normal small cell and the target backhaul node based on access link resource pre-occupation information of the normal small cell, link quality information between the normal small cell and each of the M candidate backhaul nodes, and available backhaul link resource information sent by the M candidate backhaul nodes.

Abstract: Embodiments of the present invention provide a resource allocation method and apparatus. A central control node determines a target backhaul node for a normal small cell from M candidate backhaul nodes and communication link resource information between the normal small cell and the target backhaul node based on access link resource pre-occupation information of the normal small cell, link quality information between the normal small cell and each of the M candidate backhaul nodes, and available backhaul link resource information sent by the M candidate backhaul nodes.

Abstract: A method for improving plant insect resistance includes providing target genes derived from insects. Constructs based on the nucleotide sequences of these target genes are designed to form interfering molecules. After being eating by insects, the plant can significantly inhibit expression of corresponding genes in insects. This inhibition is not affected by barrier of the insect digestive systems. The method can improve the insect resistance of plants, reduce pesticide applications, lower the costs of agricultural production, and protect the environment.

Abstract: The present invention relates to a Photoelastic Modulator (PEM), particularly to a novel polarized light modulator structure based on a photoelastic effect. The PEM, which controls driving voltages of two groups of piezoelectric actuators, is able to implement polarized light modulation having a relatively large optical path difference, and polarized light modulator having a fast modulation shaft moving circumferentially, and the PEM operates stably without a moving component. The present invention includes the piezoelectric actuators, a light pass crystal and a driver controller. Two light pass faces of the light pass crystal are parallel regular octagons directly facing each other, and identical rectangles are formed by side faces of the light pass crystal. The piezoelectric actuators are in soft connection with middle positions of the rectangles by connection rubber layers.

Abstract: A power control method and a device are provided. A network device generates, according to a coverage ratio of actual coverage performance between a second user direct connection communication device and a first user direct connection communication device to expected coverage performance of the first user direct connection communication device, a power adjustment indication message, and sends the power adjustment indication message to the first user direct connection communication device; and the first user direct connection communication device controls transmit power according to the power adjustment indication message.

Abstract: The present invention provides a power information exchange method and a device, and relates to the communications field, so as to exchange actual power of a device, effectively reduce network power consumption, and improve network energy efficiency performance. The method includes: sending, by a first device, a power information request message to each second device, where the second device is a device connected to the first device, and the power information request message is used to instruct each second device to measure actual power of the second device; and receiving, by the first device, a power information reply message sent by each second device, where the power information reply message carries the actual power of the second device sending the power information reply message, and the power information request message carries type information of the actual power and format information of the actual power.