Tencent Technology (shenzhen) Company Limited

Ubtech Robotics Corp Ltd

Huawei Technologies Co., Limited

Zte Corporation

Byd Company Limited

Southern University of Science and Technology

Ubkang (qingdao) Technology Co., Ltd.

Shenzhen Tatfook Wisdom Health Technology Co., Ltd.

Guangzhou Beogene Biotechnology Co., Ltd.

Tencent Technology Company Limited

Rui Guo

Maocai Li

Zongyou Wang

Jun Liang

Haitao Tu

Jianjun Zhang

Qi Zhao

Binhua Liu

Dawei Zhu

Li Kong

Qing Qin

Youjun Xiong

Bin Hua Liu

Zhichao Liu

Yifang Shi

Mao Cai Li

Yong Ding

Zong You Wang

Jian Zhang

Kaiban Zhou

Changqing Yang

Jianxin Pang

Chenchen Jiang

Bo Li

Liang Zhang

Fei Huang

Lei Zhang

Wei Luo

Yubo Lian

Jian Wang

Ming Liu

Heng Wang

Nan Wang

Hai Tao Tu

Da Wei Zhu

Lisheng Chen

Zhanjia Bi

Kun Xie

Dongyan Wang

Zhen Zeng

Zichao Tang

Yanchun Lin

Kai Zhou

Wenquan Tang

Hu Lan

Jinsong Zhang

Yanjun Liu

Tian Zhang

Gengliang Zhu

Haoran Liu

Tao Wang

Xiaolu Song

Chao Wang

Yongsheng Zhao

Yuncheng Zhang

Zhenan Guan

Lei Gong

Yuxuan Zhang

Yu Chen

Zongzhuo Wu

Wei Cheng

Yu Liu

Yang Mo

Beiqi Wu

Ying Qi

Chang Qing Yang

Yi Fang Shi

Jia Liu

Chen Jun Yang

Guoxing Wu

Yang Lu

Tenghao Li

Yige Cai

Zimin Chen

Jiawei Wang

Xiao He

Jiguang Lu

Bo Ren

Yu Peng

Xiaoliang Chen

Duokai Huang

Zhanshi Yao

Yinbo Song

Yong Lan

Haochuan Cui

Qiang Jiang

Yelu Liu

Shouqiang Yao

Kuan Guo

Yongjia Xue

Qingzheng Shang

Mengjia Cen

Chaojie Qi

Yongjing Li

Bo Qin

Maoshi Mai

Zhiqiang Niu

Shihao She

Shitao Xu

Baojun Zhou

Example diffractive optical elements and terminal devices are disclosed. One example diffractive optical element includes grating components periodically distributed in a first dimension. The grating component includes N optical waveguides. The N optical waveguides include M optical waveguides that periodically change in a second dimension. At least two of the M optical waveguides that periodically change in the second dimension have different structures. An included angle between the second dimension and the first dimension is greater than 0 degrees and less than 180 degrees. N is an integer greater than 1. M is an integer greater than 1 and not greater than N.

Diffractive optical element and terminal device

This application discloses a method and for dividing geographical regions performed by a computing device. The method includes: obtaining N groups of the place names, their corresponding latitudes and longitudes; converting the N groups of the place names, their corresponding latitudes and the longitudes into a first dataset; encoding latitudes and longitudes in the first dataset into a second dataset, each pair of latitude and longitude corresponding to a respective geographical region associated with a region number in the second dataset; converting the second dataset into a third dataset, the third dataset including M groups of the region numbers, each group of region numbers representing central point latitudes and central point longitudes in the geographical regions represented by the group of region numbers; and dividing the geographical regions represented by the M groups of region numbers into P regions according to the third dataset.

Method and apparatus for dividing region, storage medium, and electronic device

An electromagnetic wave control apparatus includes an upper electrode layer, a lower electrode layer, a liquid crystal layer, and a first metamaterial layer disposed between the upper electrode layer and the lower electrode layer. The first metamaterial layer includes a first array including alignment unit structures. A first surface of the alignment unit structure is a surface that is of the alignment unit structure and that faces away from the liquid crystal layer. A length-to-width ratio of the first surface of the alignment unit structure is greater than 1. A length of the first surface, a width of the first surface, and a spacing between two adjacent alignment unit structures range from 1 nm to 5000 nm.

Electromagnetic wave control apparatus

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.

Method and apparatus for electing representative node device, computer device, and storage medium

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.

Resource transfer data management method and apparatus, and storage medium

The invention discloses absorbable bone wax having a function of promoting bone repair and a preparation method thereof, falling within the technical field of biomedical materials. The absorbable bone wax comprises the following components in mass percentage: 10%˜50% polyoxypropylene polyoxyethylene block copolymer, 50%˜90% polyoxypropylene polyoxyethylene random copolymer, 0%˜20% strontium substituted hydroxyapatite and 0%˜20% microcrystalline cellulose. The absorbable bone wax has good biocompatibility and degradability, can provide good physiological conditions for absorption in vivo, has excellent mechanical and hemostatic properties, and promotes bone repair.

Absorbable bone wax having function of promoting bone repair and preparation method thereof

A blockchain-based data processing method, device, and a computer-readable storage medium are provided. A first resource acquisition request of an object identification is transmitted for a target virtual resource to a blockchain network to make the blockchain network query a target ticket identification associated with the object identification and the target virtual resource based on the first resource acquisition request. Metadata is acquired having a binding relationship with the target ticket identification. The target ticket identification is used for characterizing that the object identification has ownership of the target virtual resource. The target virtual resource is acquired according to the metadata returned by the blockchain network. The target virtual resource is controlled to perform an interaction output in response to a triggering operation for interacting with the target virtual resource.

Blockchain-based data processing method and device and readable storage medium

Embodiments of this application relate to a digital certificate verification method and apparatus, a computer device, and a storage medium. The digital certificate verification method is performed by a authentication center, and include receiving a verification request for verifying a target digital certificate; obtaining a target transaction record corresponding to the target digital certificate from a blockchain, the target digital certificate being stored in the blockchain as a transaction resource; obtaining a target account type corresponding to the target transaction record, different account types corresponding to different certificate operation states; and determining a verification result corresponding to the target digital certificate according to the target account type.

Digital certificate verification method and apparatus, computer device, and storage medium

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.

A visual positioning method and a mobile machine using the same are provided. The method includes: extracting a plurality of corner feature points corresponding to a current image; determining whether a distance between each pair of the plurality of corner feature points is less than a first preset threshold; if yes, determining whether a grayscale value of each of the plurality of corner feature points with the distance less than the first preset threshold is within a second preset threshold range; if yes, obtaining cluster set(s) of the corner feature points; screening a plurality of valid feature points from the cluster set(s); determining a positioning reliability based on a ratio of amount of the valid feature points to an amount of the plurality of corner feature points; and if the positioning reliability is within a preset range, performing a visual positioning based on the positioning reliability.

Visual positioning method, mobile machine using the same, and computer readable storage medium

A relocation method and a mobile machine using the same are provided. The method includes: obtaining a global map and a current scan map of a target scene where a mobile machine is located, and generating a local sub-map based on the global map; obtaining a black boundary in the local sub-map, determining a length and a curve complexity of the black boundary, and determining a weight of the black boundary based on the length and the curve complexity of the black boundary; determining an estimated pose and a target black boundary based on the local sub-map and the current scan image, and obtaining a matching value between the current scan image and the local sub-map based on a weight of the target black boundary; and determining the estimated pose as a relocated pose of the mobile machine in response to the matching value being larger than a preset threshold.

Relocation method, mobile machine using the same, and computer readable storage medium

A method for transferring a credit rights certificate is provided, including: generating a target account address according to a debtor account address and a creditor account address in a credit rights certificate transfer request, the target account address being a temporary account address used for storing a credit rights certificate and based on a multi-digital-signature process; transferring a credit rights certificate corresponding to the credit rights certificate transfer request from the debtor account address to the target account address; and transferring the credit rights certificate from the target account address to the creditor account address based on a confirmation instruction from the creditor account address.

Method, device, and storage medium for blockchain data processing

Embodiments of this application disclose a method and for dividing geographical regions performed by a computing device. The method includes: encoding latitudes and longitudes in a first dataset to obtain a second dataset, the first dataset recording N groups of latitudes and longitudes, and the second dataset recording N region numbers, and each of the region numbers being used for representing a corresponding geographical region; obtaining a third dataset from the second dataset, the third dataset recording M groups of the region numbers, corresponding central point latitudes and central point longitudes in the geographical regions represented by the region numbers; and dividing the geographical regions represented by the M groups of region numbers into P regions according to the third dataset, each of the regions including at least one of the geographical regions represented by the corresponding group of region numbers.

A second blockchain system receives a first consensus message from a first blockchain system, the first blockchain system includes first nodes that provide services to at least a first account, and the second blockchain system includes second nodes that provide services to at least a second account. The first consensus message indicates a first plurality of the first nodes reaches a consensus for transferring a resource from the first account to the second account. The second blockchain system transfers the resource in the task to the second account. The transferring includes that a node in the second nodes adds the resource to the second account and generates a fourth block that records a completion of a transfer event. A second consensus message is transmitted from the second blockchain system to the first blockchain system in response to a second plurality of the second nodes completing the transfer event.

Resource transfer method and apparatus, storage medium, and computer device

Aspects of the disclosure provide methods and apparatuses for storing data. In some examples, an information processing apparatus that includes processing circuitry is provided. The processing circuitry is configured to receive data and determine a target blockchain based on an attribute associated with the data and blockchain correspondence information. The blockchain correspondence information indicates attributes associated with a plurality of blockchains. Further, the processing circuitry is configured to store a first block that is generated based on the received data in the target blockchain.

Service data storage method and apparatus, storage medium, and electronic device

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Shenzhen, China

Rui Guo