Zhejiang University

Netease (hangzhou) Network Co., Ltd.

Zhejiang Nhu Company Ltd.

Shandong Nhu Pharmaceutical Co., Ltd.

Shandong Nhu Vitamin Co., Ltd.

Hangzhou Wanma High-energy Battery Co., Ltd.

Gang Chen

Shanghu Luo

Zhirong Chen

Yong Wang

Haoran Li

Yi Guo

Donglian Qi

Zhe Wang

Yunfeng Yan

Shanjun Mao

Lili Yu

Jianyong Mao

Xiao Ma

Qi Li

Liang Ruan

Hangsheng Xu

Yongxiang Zhang

Rui Han

Haoyuan Jin

Bingxiao Mei

Zezhou Wang

Jianqing Li

A multi-object tracking method based on authenticity hierarchizing and occlusion recovery relates to the technical field of multi-object tracking for security management and control of complex scenes. The method includes the following steps: image acquisition, object detection, authenticity hierarchizing, hierarchical association and outputting tracks. The multi-object tracking method is helpful to solve the long-term puzzling occlusion problem in the field of multi-object tracking, the constructed new algorithm framework can achieve an advanced tracking performance, improve the adaptability of the method to complex environments, and adapt to more difficult video surveillance security control tasks.

Multi-object tracking method based on authenticity hierarchizing and occlusion recovery

An instant messaging system based on blockchain includes: a central node and at least two domain instant messaging servers. The central node includes a management node and a blockchain node. Information about a user is stored in the blockchain node. The at least two domain instant messaging servers correspond to at least two instant messaging applications, respectively. A method for implementing the instant messaging system is implemented at the central node, and includes performing, in response to a request from the domain instant messaging server, a corresponding operation or providing corresponding information about a user to the domain instant messaging server. The central node establishes a communication connection with a plurality of domain instant messaging servers, such that each domain instant messaging server can send respectively data to the central node to realize a data sharing, and an interaction between different domain instant messaging servers.

Methods, media and computing devices for implementing instant messaging system based on blockchain

A method of user data authorization based on blockchain includes: storing, by a first application client, encrypted user data of user data in a blockchain database through a blockchain node, generating authorization information in response to a request of acquiring the user data by a second application client, and notifying the second application client to obtain the authorization information such that the second application client obtains the user data based on the encrypted user data and the authorization information. The encrypted user data is stored in the blockchain database such that the encrypted user data cannot be tampered with and a leak of real user data is prevented. The second application client obtains the user data based on the authorization information and the encrypted user data.

Methods, media, apparatuses and computing devices of user data authorization based on blockchain

The present disclosure provides a PdIn alloy catalyst including a carrier and Pd metal particles supported by the carrier, the carrier is a nitrogen-doped porous carbon composite material having a plurality of passages, Pd metal particles are distributed in the plurality of passages, the nitrogen-doped porous carbon composite material includes a nitrogen-doped porous carbon material, a plurality of indium oxide particles, and In metal particles. The In metal particles are exposed through the plurality of passages, the plurality of indium oxide particles are uniformly distributed in the nitrogen-doped porous carbon material, and In atoms of the In metal particles migrated to surfaces of Pd particles selectively occupy edge and corner positions of metal lattice of Pd metal particles. The present disclosure further provides a method for manufacturing the PdIn alloy catalyst and application thereof.

PdIn alloy catalyst, method for manufacturing PdIn alloy catalyst and application thereof

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Hangzhou, China

Gang Chen