Abstract: Provided are a method and a device of multivariable time series processing. The method comprises obtaining a time series set comprising a plurality of first time series segments having a same length and being a multivariable time series; inputting the first time series segment into a graph neural network to predict a multivariable reference value corresponding to a first time point that is a next time point adjacent to a latest time point in the first time series segment; determining an optimization function based on multivariable reference values corresponding to a plurality of the first time points and corresponding multivariable series tags; determining values of respective parameters in the causal matrix with an objective of minimizing the optimization function; and determining, based on the values of the respective parameters in the causal matrix, a causal relationship between multiple variables in the multivariable time series.

Abstract: A drive motor includes: a stator, a rotor, a balance disc, and a rotation shaft. The rotor includes a rotor core and a permanent magnet in the rotor core, and the rotor core has a first end face and a second end face. The balance disc includes a first balance disc configured to abut against the first end face and a second balance disc configured to abut against the second end face. The first balance disc, the rotor core, and the second balance disc are fitted over the rotation shaft sequentially along an axial direction and are fixed by a locking member at an end. A circumferential limiting structure is arranged at least one of between the first balance disc and the first end face or between the second balance disc and the second end face, and includes a convex key and a limiting hole fitted with the convex key.

Abstract: A balancing disk has an oil discharge port, and a first end face and a second end face opposite to each other, the first end face is configured to fit on an end face of a rotor core, the second end face has an annular groove, and the oil discharge port is communicated with the first end face and the annular groove, to enable oil flowing out of the oil discharge port to be discharged through the annular groove.

Abstract: A heat dissipation assembly includes a heat dissipation layer main body including at least one first side, arc-shaped corner side and second side, at least one first bending portion, second bending portion and corner bending portion. A first side, an arc-shaped corner side and a second side are sequentially connected. A first bending portion, a corner bending portion and a second bending portion, that are sequentially connected, are respectively connected to the first side, the arc-shaped corner side and the second side; the corner bending portion is provided with at least one first opening therein. A first opening is in a shape of a strip, and extends substantially in a radial direction of the arc-shaped corner side. In a case where the corner bending portion is provided with first openings therein, the first openings are sequentially arranged at intervals in an extending direction of the arc-shaped corner side.

Abstract: A rotor punching sheet includes a sheet body and a plurality of magnet slots defined in the sheet body. Each magnet slot includes a first section and a second section arranged opposite to each other and each configured to extend in a first direction; and a third section and a fourth section arranged opposite to each other and each adjacent to and connected to the first section and the second section, to form the magnet slot together with the first section and the second section. The first section and the third section are connected to each other through a curved section, the curved section is configured to arch towards a side away from a center of the sheet body in a second direction relative to the first section, and the second direction is perpendicular to the first direction.

Abstract: A data processing method, an electronic device, and a computer readable medium are provided. The method includes: after an elastic scaling rule for a target cluster is created, configuring a cache space corresponding to the target cluster according to the elastic scaling rule, obtaining indicator detection state data of the load type rule item within a completion time range according to a cluster identifier of the target cluster and an indicator item identifier carried by the load type rule item, storing the indicator detection state data to the cache space corresponding to the target cluster, keeping obtaining the indicator detection update result corresponding to the target cluster during the polling interval and updating a storage content in the cache space corresponding to the target cluster according to the indicator detection update result.

Abstract: The present disclosure provides a method, apparatus, electronic device and storage medium of data management. The method comprises: in accordance with a determination that data specification information does not match target data comprised in editable information, determining a target data modification message; and pushing the target data modification message to a target collaborative user device, so as to cause a target user to modify the target data through the target collaborative user device; wherein the target data modification message comprises locating information of the target data, and the target collaborative user device is determined based on the locating information. At this point, the maintenance user of the target data may obtain the target data modification message through the target collaborative user device in time and further modify the target data based on the target data modification message.

Abstract: Disclosed in the present application are a method of creating a materialized column based on a data lake and a method of querying data based on a data lake. In these methods, at least one materialized column can be created for a data table first, such that these materialized columns are used for storing data related to common columns in the data table, such that when a user subsequently triggers a data query request for a common column, a materialized column can replace the common column in feeding back the queried data to the user, and in this way, adverse effects caused when the queried data is fed back to the user directly by the common column can be effectively overcome, such that the data query effect can be effectively improved, and the information processing effect for such data tables can thus be effectively improved.

Abstract: The present disclosure provides a data analysis method, an apparatus, a device, and a computer-readable storage medium. The method includes acquiring a data analysis request, in which the data analysis request includes at least one data indicator; analyzing the at least one data indicator according to a calculation model of the at least one data indicator to obtain a basic indicator on which the at least one data indicator depends, in which the calculation model comprises a dependency relationship between the at least one data indicator and the basic indicator; and according to a query result of the basic indicator, performing calculation on the query result of the basic indicator through the calculation model to obtain a query result of the at least one data indicator.

Abstract: The present application discloses a method, apparatus, device and medium for rendering page components. When a target page needs to be loaded, rendering data corresponding to at least one pending component in the target page is obtained, and a rendering request corresponding to the at least one pending component is added to a scheduling queue. A rendering request of a target pending component is read from the scheduling queue according to the position of the at least one pending component in the target page, and further the target rendering component is rendered according to rendering data corresponding to the target pending component in the rendering request. That is, when rendering components in a page, the rendering order between various components will be coordinated according to the position of the component in the page, thereby avoiding the problem of buffering when too many components are rendered at the same time.

Abstract: This application provides a task processing method, a first server may receive a first task processing request sent by a client, and then determine information of a task engine that is used to processes the first task processing request. The information of the task engine may be used to establish a connection to the task engine. The first server may store the information of the task engine and an identifier of the client in correspondence into an external memory. After the first server is faulty, another server may determine the information of the task engine based on the information of the task engine and the identifier of the client that are stored correspondingly in the external memory, and establish a connection to the task engine based on the information of the task engine, to use the task engine to continue to process a task initiated by the client.

Abstract: The present disclosure relates to a foldable display device and belongs to the field of display. The foldable display device includes a flexible display panel, a flexible cover plate and a flexible printed circuit. The flexible display panel includes a first foldable region and a first side edge. The first foldable region includes a first sub-region, and a part of the first side edge is a boundary of the first sub-region. The flexible cover plate is bonded to a first surface of the flexible display panel and includes a second foldable region. An orthographic projection of the second foldable region on the first surface is within the first foldable region, the second foldable region is bonded to the first foldable region, and the orthographic projection of the second foldable region on the first surface is not overlapped with the first sub-region.

Abstract: A timestamp generation method and apparatus, and an electronic device and a storage medium, which are used for solving the technical problem of recorded information being easily leaked because a trusted third party is usually needed as a timestamp authority for recording in a traditional trusted timestamp generation method. In the present invention, the method comprises: acquiring a file record; calculating a hash value of the file record; sending the hash value to a random issuer, and receiving a signature result returned by the random issuer, wherein the signature result is generated after the random issuer signs the hash value and a receiving time, and the receiving time is the time when the random issuer receives the hash value; and storing the signature result in a blockchain as a timestamp of the file record.

Abstract: Disclosed are an online program update method and device for an optical amplifier. The method comprises: when a program update instruction is sent, a Microcontroller Unit MCU receiving update programs of MCU and a programmable logic device FPGA, storing them in a program memory device, and sending an update instruction to FPGA; FPGA terminating; operations of a digital-to-analog converter DAC according to the instruction and a current state remaining unchanged; MCU loading new codes of MCU and FPGA while DAC remains in state of halting refreshing; and after MCU and FPGA run the new codes, reading previously stored data, and starting switching from a previous operation state to enter normal operation state. On basis of conventional optical amplifier control, the invention combines characteristics of MCU and FPGA, and ensures uninterrupted service of optical amplifiers, achieving smooth transition of services, thereby improving stability and reliability of whole optical communications systems.

Abstract: A method for avoiding singularities of a robotic arm includes: calculating a virtual environment external force required by the robotic arm to avoid singularities based on current joint positions of joints on the robotic arm when it is determined that the robotic arm needs to avoid singularities; obtaining a current end force of the robotic arm and a desired end trajectory of the robotic arm; performing admittance control calculation based on the virtual environment external force, the current end force and the desired end trajectory to obtain a corrected end trajectory of the robotic arm; and controlling the robotic arm to move based on the corrected end trajectory.

Abstract: A robot control method, a robot, and a computer-readable storage medium are provided. The method includes: obtaining a trajectory planning parameter of joint(s) of the robot, force data of an end of the robot, and force data of the joint(s); obtaining an end admittance compensation amount; determining a first joint parameter and a first slack variable corresponding to the end admittance compensation amount in a joint space of each of the joint(s) based on the end admittance compensation amount and the trajectory planning parameter, obtaining a joint admittance compensation amount; determining a second joint parameter based on the first joint parameter, the first slack variable, the joint admittance compensation amount, and the trajectory planning parameter; determining a target joint commanding position based on the second joint parameter; and controlling the robot to move according to the target joint commanding position.

Abstract: A joint acceleration planning method, a redundant robot using the same, and a computer readable storage medium are provided.

Abstract: The present invention relates to a Si-containing high-strength and low-modulus medical titanium alloy, and an additive manufacturing method and use thereof. The additive manufacturing method comprises alloy ingredient design, powder preparation, model construction and substrate preheating, and additive manufacturing molding; wherein the Si-containing high-strength and low-modulus medical titanium alloy is designed in the ingredient proportion of Ti 60-70 at. %, Nb 16-24 at. %, Zr 4-14 at. %, Ta 1-8 at. %, Si 0.1-5 at. %.

Abstract: A data query method based on Doris includes: acquiring history data in a bottom operator in a storage engine architecture of the Doris, and performing an aggregation calculation on the history data to obtain an aggregation result of the history data; caching, by a preset cache system, the aggregation result of the history data; performing an aggregation calculation on real-time data in a newly inserted bottom operator in the Doris, in response to a data query request, to obtain an aggregate result of the real-time data; acquiring the aggregation result of the history data from the preset cache system, and merging the aggregation result of the history data with the aggregation result of the real-time data to obtain merged data; and sending, by a data sending operator in the Doris, the merged data to an upper layer of an execution engine, to output a final data query result.

Abstract: Provided are a display device and a method for controlling the same. The display device includes: a display panel including a display module and a touch module, and having a first display area, a second display area and a first bending area located at a junction between the first display area and the second display area, the display panel being bendable at the first bending area; and a bendable circuit board having a second bending area, an orthographic projection of which on the display panel overlaps the first bending area, the bendable circuit board is connected to a data driving unit and a touch driving unit, transmits a data signal of any of the first display area and the second display area to the data driving unit and transmits a touch signal of any of the first display area and the second display area to the touch driving unit.