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Huawei Technologies Co., Limited

Shanghai University of Engineering Science

Jian Luo

Zheng-Wei Wang

Weizhong Qiu

Yi Chen

Yong Sik Kwon

Jaeyoung Choi

Hyunjun Kim

Eunsang Kim

Patrick Voelker

Du Xue

Huizi Liu

Lei Zhang

Mihnea Andrei

Norman May

Wei Huang

Werner Thesing

Fengguang Qiu

Ruediger Karl

Andre Schefe

Xia-Ge Dai

Ying Wang

Ziwei Chen

Uwe Hahn

Yujuan Shen

Urs Klingsporn

Riping Cheng

Kanghui Zheng

Kefeng Xu

The present disclosure provides a method for determining a magnetic field parameter threshold of negative-pressure arc (NPA) welding including the following steps: forming a control equation using the Navier-Stokes equation, heat transfer equation, and Maxwell's electromagnetic equation; establishing a geometric model and meshing; setting material parameters; setting initial conditions and boundary conditions; conducting parameterized scanning, setting solver, collecting NPA data, and fitting NPA function; afterwards, performing numerical simulation calculation of NPA under different conditions, and then fitting the calculated NPA threshold data, such that the equation for determining the magnetic field parameter threshold of NPA welding can be obtained. The method may more accurately predict the threshold condition of NPA welding and provide guidance for NPA welding technology; and solving the instability of the molten pool caused by gravity and arc positive pressure during conventional positive pressure arc thin-wall surfacing, additive manufacturing, and inclined welding process.

Method for determining magnetic field parameter threshold of negative-pressure arc welding

Systems and methods include reception of a request to move a first database tenant from a first database instance to a second database instance, the first database tenant comprising a first tenant object instance associated with a plurality of artifacts of the first database instance, the plurality of artifacts including a tenant-level catalog and data. In response to the request, the tenant-level catalog is exported from the first database instance to a shared storage system, the tenant-level catalog is imported to a second tenant of the second database instance from the shared storage system, the data is exported from the first database instance to the shared storage system, the data is imported to the second tenant of the second database instance from the shared storage system, and the first database tenant is dropped from the first database instance.

Database tenant-level move

A terminal first connects to a 5th generation (5G) standalone (SA) network and initiates a call to another terminal by using a Voice over New Radio (VoNR) technology. When the terminal fails to call the other terminal, the terminal disconnects from the 5G SA network, connects to a Long-Term Evolution (LTE) network, and then automatically initiates a call to the other terminal by using a Voice over LTE (VoLTE) technology.

5G SA network-based call method, electronic device, and system

Systems and methods include reception of an instruction to recover a first database tenant of a first database instance to a first point in time, the first database tenant associated with first database artifacts of the first database instance, and the first database instance including two or more database tenants and, in response to the instruction, creation of a second database instance, selection of backup data of the first database instance based on the first point in time, execution of a recovery of the backup data on the second database instance, export of second database artifacts of the first database tenant from the second database instance to a storage, truncation of the first database artifacts from the first database instance, import of the second database artifacts from the storage to the first database instance, and deletion of the second database instance.

Tenant-level database recovery

Implementations include providing, by a computer-executed migration advisor executing within a run-time of a source database system, a query data set including queries processed by the source database system during production use of the source database system, providing, by the migration advisor, an object data set including data representative of database objects stored within a database of the source database system, generating, by the migration advisor, a list of query-level features and a list of object-level features, each feature in the list of query-level features and each feature in the list of object-level features including a feature that is deprecated in a target database system, resolving one or more issues represented by features of one or more of the list of query-level features and the list of object-level features, and executing migration of the database of the source database system to the database of the target database system.

Pre-migration detection and resolution of issues in migrating databases systems

The present disclosure involves systems, software, and computer implemented methods for performing dynamic topology switch in a failover operation. In one example, a failover of a first node is determined. The first node includes a first data server and a first replication server. At least one user application connects to the first data server prior to the failover of the first node. In response to the determined failover, the at least one user application is connected to a second data server of a second node. The second node includes the second data server and a second replication server. Prior to the failover of the first node, a data replication topology of the second node is a remote topology. During the failover, if the first replication server on the first node is down, the data replication topology of the second node is switched from the remote topology to a local topology.

Dynamic topology switch for data replication

A magnetic steel cooling structure for permanent magnetic motor of electric vehicle, which comprises a rotor core, magnet steels, and at least one heat pipe, the magnet steels are mounted in the rotor core, the heat pipe has an inner cavity inside which is contained a phase change material, the heat pipe is mounted in the rotor core and the outer wall of the heat pipe is contacted with the rotor core tightly, the inner cavity is inclined with respect to the axis of the rotor core A cooling method is also provided in which the magnetic steel cooling structure for the permanent magnetic motor of electric vehicle improves heat dissipation, stability and reliability of the motor, and finally improves the performance of the whole vehicle, moreover it has a simple structure, and is suitable for large-scale popularization.

Magnetic steel cooling structure for a permanent magnetic motor of an electric vehicle and cooling method thereof

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Shanghai, China

Jian Luo