Abstract: A data migration method and apparatus, a device, a distributed system and a storage medium are provided. Said method is applied to each data node in a distributed system comprising a plurality of data nodes. Said method comprises: determining, in a current data migration task, a table to be migrated of a current node, and a target data node (S101); and writing incremental data in the table to be migrated into the table to be migrated, and a target data table of the target data node, the incremental data being data obtained by performing, after the data migration task is started, a change operation on data in the table to be migrated (S102).

Abstract: A polypeptide and an application thereof in bone repair are provided. An amino acid sequence of the polypeptide provided by the invention is shown as SEQ ID NO: 1. The invention further discloses use of the polypeptide GS18 in bone injury and/or bone repair. Furthermore, the invention further discloses an application of the polypeptide GS18 as well as a polypeptide scaffold for bone repair. The polypeptide of the invention demonstrates the ability to translocate ?-catenin into the nucleus and induce the expression of secreted protein osteocalcin in vivo. In vitro, the polypeptide facilitates the osteogenic differentiation of osteogenesis-oriented BMSCs (pre-osteoblasts thereby promoting the process of bone repair.

Abstract: A twistable and stackable shelf includes storage members, an elastic member, a first supporting pipe, a second supporting pipe, a first connecting member, and a second connecting member. Each of the first and second connecting member includes an end portion defining an inserting hole and an inserting portion defining a bottom groove and fluidly connected to the inserting hole. Two ends of the elastic member are inserted into the inserting holes and extend to the bottom grooves; two hooking members are arranged in the bottom grooves. The first and second supporting pipes form a vertical arrangement through the first and second connecting members and support the plurality of the storage members in a vertical direction. Or, the first and second supporting pipes form a horizontal arrangement through the first and second connecting members, and the storage members are twisted and stacked in the vertical direction.

Abstract: Embodiments in the present description provide an operation request processing method and apparatus, and a device, and a readable storage medium, and a system. In the present embodiment, after obtaining an operation request for a data table, a read-write node can return a request processing completion message to a requester in time without waiting for all read-only nodes; a locking operation is performed on the data table, a log of locking the data table is written into a redo log file; and after status information of the log of locking is written into a status record, a monitoring processing process can achieve log playback monitoring of all the read-only nodes by using the status record and the log of locking. Thus, an asynchronous processing mechanism is achieved, and the stability and efficiency of operation request execution are improved.

Abstract: A non-invasive blood glucose detection device and a measurement method based on a multi-technology integration is provided according to the disclosure. The device combines a near-infrared spectroscopy non-invasive blood glucose detection technology with a non-invasive blood glucose detection technology based on optical polarimetry, thus improving the detection sensitivity and accuracy, simultaneously inhibiting the influence of human background and individual differences. The AOTF can be used to achieve tunable light splitting and the output lights have two orthogonal linearly polarized light characteristics. The hardware for implementing the two methods are combined. Thus, the device has the advantages of simple structure, strong anti-interference ability and low cost. In addition, it combines the two methods on software by adopting a random forest algorithm and a data fusion algorithm, which effectively improves the prediction accuracy of non-invasive blood glucose concentration.

Abstract: A data partition storage system is provided. The system includes: a data analysis device, configured to determine, according to a data feature of target data comprised in a database, a heat level corresponding to the target data; and a database kernel, deployed on a target device different from the data analysis device to form the database, and configured to: acquire the heat level corresponding to the target data transmitted by the data analysis device; and store the target data in a storage area corresponding to the heat level.

Abstract: Embodiments of the present disclosure provide a data migration method and device, wherein the data migration method comprises: acquiring a migration request for a source database, creating a snapshot of to-be-migrated data in the source database and migrating the snapshot to a target database, reading a data migration log stored in a primary replica database of the source database and synchronizing the data migration log into the target database, and configuring a route for a target primary replica database of the target database according to routing rules of the primary replica database.

Abstract: A data reading method and apparatus are provided. The data reading method includes: receiving a data reading transaction request; acquiring a snapshot timestamp based on the data reading transaction request; and sending, when the snapshot timestamp is less than a maximum commit timestamp for a write transaction of a first database, the data reading transaction request carrying the snapshot timestamp to the first database for data reading.

Abstract: A search method based on a neural network model is provided. The neural network model includes a semantic representation model, a recall model, and a ranking model. The present disclosure relates to the field of artificial intelligence, and in particular to the technical field of search. An implementation of the method comprises: inputting a target search and a plurality of objects to be matched to the semantic representation model to obtain a first output of the semantic representation model; inputting the first output of the semantic representation model to the recall model, and obtaining at least one recall object matching the target search from the plurality of objects to be matched by using the recall model; and inputting a second output of the semantic representation model to the ranking model, and obtaining a matching value of each of the at least one recall object by using the ranking model.

Abstract: An foldable shelf includes: a foldable support body, where the support body can be switched between a folded state and an unfolded state; several layer plates, where the several layer plates fit with the support body to form a storage space in the unfolded state and reduce a volume of the foldable shelf in the folded state; and a fixing mechanism for securing the layer plates to the support body, where the fixing mechanism includes: a first fastener, where an outer surface of the first fastener is provided with at least one protrusion; and a second fastener, where the second fastener is provided with a groove for accommodating the first fastener; where a side wall of the groove is provided with a through hole matching the protrusion.

Abstract: An foldable shelf includes: a foldable support body, where the support body can be switched between a folded state and an unfolded state; several layer plates, where the several layer plates fit with the support body to form a storage space in the unfolded state and reduce a volume of the foldable shelf in the folded state; and a fixing mechanism for securing the layer plates to the support body, where the fixing mechanism includes: a first fastener, where an outer surface of the first fastener is provided with at least one protrusion; and a second fastener, where the second fastener is provided with a groove for accommodating the first fastener; where a side wall of the groove is provided with a through hole matching the protrusion.

Abstract: The present disclosure provides a multi-system-based intelligent question answering method and apparatus, and a device, relating to the field of artificial intelligence, in particular to the field of knowledge graph. The specific implementation solution is: determining a question category of question information in response to a question answering instruction of a user, wherein the question answering instruction is used to indicate the question information; determining a query engine corresponding to the question category, and invoking multiple question analysis systems corresponding to the query engine according to the query engine; and feeding back answer information to the user when the answer information corresponding to the question information is determined according to a current question analysis system in a process of processing the question information by sequentially using the multiple question analysis systems according to system priorities of the question analysis systems.

Abstract: A method for manufacturing a power pin of a power interface is provided. The method may includes the steps of: providing a pin workblank, wherein the pin workblank includes a first surface and a second surface adjacent to each other; performing a fine blanking process for the first surface in a predetermined blanking direction, while burrs forming on the second surface; and adjusting a position of the pin workblank, performing another fine blanking process for the second surface in the predetermined blanking direction, to form a power pin of the power interface and to omit a process of removing the burrs on the second surface. Before the step of adjusting a position of the pin workblank, the method further includes a step of forming a chamfer or a round fillet at an edge of the second surface adjacent to the first surface of the pin workblank.

Abstract: A method for manufacturing a power interface is provided. The method may includes: providing a pin workblank and disposing the pin workblank on a first mold; and performing a punching shear process on the pin workblank by a second mold, thereby forming a power pin of the power interface without a process of removing burrs. A power interface is also provided.

Abstract: Disclosed are a light-emitting substrate and a display device. In the light-emitting substrate, a first pad of a light-emitting area includes a first metal layer located above a base substrate and a second metal layer located on a side, facing away from the base substrate, of the first metal layer. A material of the second metal layer includes copper-nickel-titanium alloy, and a quantity of nickel atoms and/or titanium atoms contained per unit area in a cross section, farther from the base substrate, of the second metal layer is greater than a quantity of nickel atoms and/or titanium atoms contained per unit area in another cross section, closer to the base substrate, of the second metal layer.

Abstract: Provided are a method for maintaining Walker constellation formation and a terminal device. The method comprises: determining a first offset amount of each satellite within a simulation time period according to parameters of a Walker constellation; performing first offset on each satellite according to the first offset amount to obtain a Walker constellation after the first offset; determining a second offset amount of each satellite within the simulation time period according to parameters of the Walker constellation after the first offset; and superimposing the first offset amount and the second offset amount, and performing second offset on each satellite so as to maintain the formation of the Walker constellation.

Abstract: Provided is a method and system of evaluating a constellation spare strategy based on a stochastic time Petri net, which is applied in the technical field of constellation operation management. The method comprises: constructing a single satellite STPN model and an orbital plane STPN model, and establishing a navigation constellation STPN model that includes multiple spare strategies according to the single satellite STPN model and the orbital plane STPN model; establishing an availability model according to the number of malfunctioning satellites and the constellation value (CV) in the navigation constellation STPN model, and establishing a cost model according to operating costs of the navigation constellation STPN model; and evaluating the navigation constellation STPN model using the availability model and the cost model, and determining a target spare strategy from the multiple spare strategies according to an evaluation result.

Abstract: A method for network communication across application containers in a computer server system includes executing, by a computer system, a host operating system (OS). The host OS is an instance of an OS. The host OS includes multiple application containers operatively coupled to a memory. The method further includes executing, by the host OS, a virtual network interface for each of the application containers. The method further includes implementing, by the host OS, a remote direct memory access (RDMA) transparently for communications amongst the application containers by utilizing shared memory communications.

Abstract: A power interface (100), a mobile terminal and a power adapter. The power interface (100) comprises a body portion (110), a data pin (120), a power pin (130) and an insulating spacer layer (139). The body portion (110) is adapted to connect a circuit board, a plurality of data pins (120) are spaced and connected to the body portion (110). A plurality of power pins (130) may be spaced and connected to the body portion (110). The power pins (130) and the data pins (120) are arranged at intervals, at least one of the plurality of power pins (130) comprises a widened section (132), the cross sectional area of the widened section (132) being greater than the cross sectional area of the data pins (120) so as to increase the current load amount of the power pins (130).

Abstract: A non-invasive blood glucose detection device and a measurement method based on a multi-technology integration is provided according to the disclosure. The device combines a near-infrared spectroscopy non-invasive blood glucose detection technology with a non-invasive blood glucose detection technology based on optical polarimetry, thus improving the detection sensitivity and accuracy, simultaneously inhibiting the influence of human background and individual differences. The AOTF can be used to achieve tunable light splitting and the output lights have two orthogonal linearly polarized light characteristics. The hardware for implementing the two methods are combined. Thus, the device has the advantages of simple structure, strong anti-interference ability and low cost. In addition, it combines the two methods on software by adopting a random forest algorithm and a data fusion algorithm, which effectively improves the prediction accuracy of non-invasive blood glucose concentration.