Abstract: The present application relates to a metadata management method and apparatus, a computer device, and a storage medium. The method includes: forming a disk space by using RAIDs, dividing the disk space into blocks, combining the blocks crossing disks into one stripe, and forming stripes into a logical volume allocation unit; generating a two-level table according to the logical volume allocation unit, where the two-level table includes first table entries and second table entries, an address recorded in a first table entry is an address of a second table entry, a length of a second table entry based on a ratio of the logical volume allocation unit to a length of a single strip, and bitmaps of stripes are recorded in a second table entry; and managing metadata in the logical volume allocation unit by means of the two-level table.

Abstract: The present disclosure relates to the field of new energy, and provides a motor controller with capacitors surrounded, a drive assembly, and a vehicle. The motor controller includes multiple capacitors, a main circuit board, a positive electrode connection plate in a form of a bottomed cylinder, and a negative electrode connection plate, wherein the main circuit board is provided with positioning posts with different diameters on a bottom, and outer edges of the positive and the negative electrode connection plates are each circumferentially provided with multiple pins. The multiple capacitors are arranged in a device accommodating space, the positioning posts and the negative electrode connection plate facilitate a stable connection of the capacitors, and the laminated assembly is simple.

Abstract: A method for processing information is provided. The method includes obtaining input information to be processed. The method further includes determining execution information associated with processing of the input information. The execution information includes at least one of memory information to be retrieved or tool information to be invoked. The method further includes obtaining, by using the execution information, at least one piece of processing result information corresponding to the processing of the input information. The method further includes the at least one piece of processing result information to generate output information for feedback.

Abstract: The present disclosure relates to the field of new energy, and provides a drive assembly with annularly arranged power transistors and a vehicle including the same. The drive assembly includes a housing, a motor controller, a rotor, and a stator, wherein an outer wall of the housing is provided with a liquid cooling channel including a motor cooling groove located on an outer wall of a motor mounting chamber and a controller cooling groove located on an outer wall of a controller mounting chamber that communicate with each other, the motor controller includes a circuit board assembly and multiple power transistors, and the multiple power transistors are provided at an outer circumference of the circuit board assembly, and are electrically connected with the circuit board assembly. The multiple power transistors are evenly distributed circumferentially, thereby realizing integrated liquid cooling and improving heat dissipation efficiency.

Abstract: The present disclosure relates to the field of new energy, and provides a drive assembly with a motor controller and a vehicle including the same. A cylindrical housing is provided therein with a chamber, a partition wall provided on an inner wall of the housing divides the chamber into a motor mounting chamber and a controller mounting chamber. The present disclosure utilizes a space at a rear end in an axial direction of a motor, and designs a partition wall and a bearing, such that a rotor is rotatably provided in a motor mounting chamber and a motor controller is provided in a controller mounting chamber. The present disclosure designs a drive assembly with a motor controller at a rear end in the axial direction, thereby improving the device integration and space utilization, effectively reducing the occupied space, and realizing high integration of the motor controller and the drive assembly.

Abstract: The present disclosure relates to the field of new energy, and provides a laminated busbar assembly, a motor controller, a drive assembly, and a vehicle. The laminated busbar assembly includes a main circuit board, a positive and a negative electrode connection plates, and a three-phase connection plate assembly, which are laminated in sequence. The positive and the negative electrode connection plates, and the three-phase connection plate assembly are each provided with pins arranged circumferentially. The present disclosure designs a laminated arrangement and an annular arrangement of pins, thereby improving the device integration and space utilization, effectively reducing the occupied space, and realizing high integration of the motor controller and the drive assembly.

Abstract: The present disclosure provides an ?-olefin extractant and a method for separating an alkane and an ?-olefin, wherein the ?-olefin extractant comprises an alcohol-amine, a saturated monoketone having a carbon chain length of 7-10 and a monovalent salt of a Group IB metal, wherein the alcohol-amine, the saturated monoketone having a carbon chain length of 7-10 and the monovalent salt of a Group IB metal are in a mass ratio of (0.9-2.0):(0.8-1.5):(0.1-0.6). In the present disclosure, the technical principle of complexing extractive rectification is utilized and achieves the purpose of separating an olefin from an alkane by adding a complexing extractant to form a relatively stable complex between a metals and the olefin. The present disclosure has advantages of good separation effect and high product yield.

Abstract: The present disclosure relates to a method and apparatus for knowledge graph construction, storage medium and electronic device. The method for knowledge graph construction, comprises: identifying an entity concept from a title text of a target web page and at least one entity corresponding to the entity concept from a body text of the target web page; constructing a syntax parse tree of the title text based on syntax parse rules of a language to which the title text belongs, and determining, from the syntax parse tree, a modifier for modifying the entity concept; and generating a knowledge graph based on the entity concept, the modifier, and the at least one entity. Through the solution of the present disclosure, knowledge graphs with high accuracy and high recall rates are constructed without structured processing on target web pages.

Abstract: The present disclosure relates to the field of new energy, and provides a three-phase terminal block, a drive assembly, and a vehicle. The three-phase terminal block includes a cylindrical terminal block body and three single-phase terminals each arranged along an axial direction of the terminal block body, wherein the single-phase terminals each are provided with a first terminal portion and a second terminal portion on two ends. The three single-phase terminals are arranged at an outer circumference of the terminal block body to connect terminals of a stator correspondingly, thereby optimizing the wiring layout. In addition, the space formed by the three single-phase terminals can accommodate components, thereby improving the compactness of the structure layout.

Abstract: A curved optical plate includes a curved light exit surface including at least one curved edge and at least one uncurved edge, and at least one first side surface connected to the at least one uncurved edge of the light exit surface; a first side surface includes a first surface, and the first surface extends toward an interior of the curved optical plate.

Abstract: A display device and a control method therefor are disclosed. The display device includes: a first backlight module; a second backlight module located at a light emergent side of the first backlight module; and a display panel located at a side of the second backlight module facing away from the first backlight module; where the first backlight module includes a first light board, and the first light board emits light to a side of the second backlight module; the second backlight module includes at least one second light board, second light boards of the at least one second light board are stacked, and the second light boards transmit the light emitted by the first backlight module and emit light to the display panel; the first light board includes a plurality of first light sources, each second light board of the second light boards includes a plurality of second light sources.

Abstract: A method for generating a 3D image of a body shape includes obtaining a set of far-field patterns of electromagnetic waves from a given body shape of a human or animal, establishing a one-to-one correspondence between the body shape and the set of far-field patterns of electromagnetic waves, representing the far-field patterns as a shape generating vector, mapping a vector of characteristic parameters to the shape generating vector, producing a body generation model by taking the vector of characteristic parameters and the shape generating vector as input and output data to form a training dataset for machine learning, specifying a characteristic vector of an unknown geometric body shape and obtaining a shape generating vector of the unknown geometric body shape based on the body generation model, and reconstructing the unknown geometric body shape based on the shape generating vector.

Abstract: Embodiments of the present disclosure relate to semantic parsing for short text. According to embodiments of the present disclosure, a method is proposed. The method comprises: obtaining a set of sentences associated with a short text, each of the set of sentences containing all of words in the short text; determining a set of syntactic features associated with the set of sentences, each of the set of syntactic features indicating at least one of a constituency relation and a dependency relation of the corresponding sentence; and determining a semantic structure of the short text based on the set of syntactic features.

Abstract: A method for reconstructing dynamic contrast-enhanced (DCE) MR images includes receiving a plurality of continuous free-breathing DCE images, the plurality of images obtained with a contrast, sorting the images by identifying a respiratory phase associated with each of the continuous free-breathing DCE images, reconstructing the plurality continuous free-breathing DCE images into a 4D respiratory motion-resolved image, obtaining 3D deformable motion vector fields (MVFs), and utilizing a deep learning based motion transformation integrated forward-Fourier (DL-MOTIF) model and the 3D deformable MVFs to reconstruct the DCE MR images.

Abstract: The present disclosure relates to a turntable assembly and an engineering mechanical equipment. A turntable assembly for an engineering mechanical equipment includes: a turntable body; a first rotating mechanism connected to the turntable body and configured to cause the turntable body to rotate relative to an undercarriage of the engineering mechanical equipment; and a second rotating mechanism connected to the turntable body and configured to cause an upper work device of the engineering mechanical equipment to rotate relative to the turntable body. An axis of rotation of the first rotating mechanism is not co-linear with an axis of rotation of the second rotating mechanism. The second rotating mechanism includes a rotating body for connecting the upper work device. At least two hinge points arranged spaced apart along the axis of rotation of the second rotating mechanism are provided between the rotating body and the turntable body.

Abstract: An operator processing method of a deep learning framework an electronic device, and a storage medium are provided, which relate to a field of computer technology, especially in a field of artificial intelligence technology such as deep learning. The specific implementation scheme includes: acquiring an operator to be processed, where the operator to be processed includes a template parameter independent of the deep learning framework and an operator kernel function; parsing, in response to receiving an input information for the operator to be processed, the template parameter by using the input information to obtain a plurality of complete template parameters related to the deep learning framework; and processing the operator kernel function according to the plurality of complete template parameters, to obtain an available operator for the deep learning framework.

Abstract: Provided are a method for producing carbonate esters, and a catalytic structure for producing carbonate esters, whereby solid catalyst powder formation and detachment are suppressed and superior carbonate ester reaction efficiency is yielded when a catalytic structure constituted by a sufficient quantity of a cerium-oxide-containing solid catalyst supported on a substrate is used. The method for producing carbonate esters includes reacting a monohydric alcohol and carbon dioxide in the presence of a catalytic structure and a hydrating agent. The catalytic structure includes a substrate and a catalytic layer that is formed on at least a portion of the surface of the substrate and contains a solid catalyst and an inorganic binder. The solid catalyst contains cerium oxide. The supported quantity of the solid catalyst is 15 g/m2 to 200 g/m2, inclusive. The inorganic binder contains silica and/or alumina.

Abstract: The present application provides a secondary battery, a battery module, a battery pack, and an electrical device. The secondary battery includes a positive electrode plate, a negative electrode plate, and a separator disposed between the positive electrode plate and the negative electrode plate, in which the positive electrode plate comprises a positive electrode coating containing a positive electrode active material comprising a lithium iron phosphate material and a conjugated carbonyl compound. In a discharge process of the secondary battery, in addition to a discharge plateau of the lithium iron phosphate material, a discharge curve further includes a relatively low discharge plateau provided by the conjugated carbonyl compound.

Abstract: Provided is a dialkyl carbonate production method that enables a dialkyl carbonate to be produced in a simple manner and in a short reaction time and enables easy processing of by-products. This dialkyl carbonate production method involves generation reaction of a carbonate ester through reaction between carbon dioxide and an alcohol represented by formula (1), wherein the generation reaction of a carbonate ester is performed in the presence of a carbodiimide compound represented by formula (2) (R1-R3 in the formula are as described in the description of the present application).

Abstract: A battery pack includes a first battery cell, a second battery cell, and a third battery cell. A positive electrode active substance of each battery cell is composed of lithium iron phosphate and a low-temperature additive. The low-temperature additive is selected from compounds containing at least two carbonyl groups, which are conjugated with an unsaturated structure or an atom having lone-pair electrons connected with the carbonyl groups, and a discharging cut-off voltage of the battery pack at a low temperature has the following rules: discharging cut-off voltages V1, V2, and V3 of the first battery cell, second battery cell, and third battery cell range from 1.95V to 2.1V, from 1.8 V to 2.0V, from 1.6V to 1.9V, respectively, and V1, V2, and V3 satisfy a relationship of V1>V2>V3.