Abstract: Disclosed are a method and a device for balancing crankshaft deformation e, a crankshaft with counterweights determined according to the method, and a scroll compressor using the crankshaft. The method includes: determining a component centrifugal force required by a counterweight to overcome the crankshaft deformation caused by both an orbiting scroll centrifugal force and a gas force; and determining the counterweight according to the component centrifugal force. The counterweight is arranged on the crankshaft.

Abstract: A piston limiting structure, including: a cylinder, a piston, and a flange provided with a limiting piece, the cylinder has a piston hole perpendicular to an axial direction of the cylinder and penetrating through the cylinder, and a projection of the piston hole in a penetrating direction is circular. The piston is disposed in the piston hole in a form-fit manner and is slid in the piston hole in a reciprocating manner. A side wall of the piston is provided with a thrust groove, a bottom surface of the thrust groove forms a thrust surface on the side wall of the piston, and the thrust groove does not penetrate through two ends of the side wall of the piston along an axial length of the piston. The limiting piece abuts against the thrust surface.

Abstract: Provided are a driver board, a display panel, and a display apparatus. The driver board includes a driver circuit. The driver circuit includes N pixel electrodes, N pixel switches, a data switch, and a storage capacitor, N is a positive integer, and N?2. The storage capacitor includes a reference electrode and a counter electrode. A control terminal of the pixel switch receives a gating signal, a first terminal of the pixel switch is connected to the counter electrode, and a second terminal of the pixel switch is connected to the pixel electrode. The driver board further includes data lines, and each data line is connected to the counter electrode via the data switch.

Abstract: A display module (10) includes: a display panel (12) and a circuit board (14) coupled to the display panel (12). The display panel (12) includes a driving chip (122) and a display unit (124); and the circuit board (14) includes a first filter element (142), wherein the first filter element (142) is coupled to the driving chip (122) and the display unit (124), and a direct current signal output by the driving chip (122) is filtered by the first filter element (142) and then transmitted to the display unit (124). The present disclosure also provides a display apparatus (100).

Abstract: Disclosed is a polarization fusion orientation method for an occluded environment, which comprises: acquiring a sky polarization image through a polarization camera first, then taking a heading angle output by an E-vector polarization orientation method as a state quantity, taking a heading angle output by a symmetry axis polarization orientation method as an observed quantity, realizing heading angle fusion through a multi-frequency variational Bayesian strong tracking cubature Kalman filter (MF-VBSTCKF), and respectively selecting different methods for a sampling position and a sampling interval period to update an optimal heading angle. The method solves the problem that high-precision and high-robustness heading angle measurement of polarized light cannot be realized in the occluded environment, can improve the precision and robustness of a polarized light orientation method in the occluded environment, and ensures high-frequency output of the heading angle at the same time.

Abstract: Bridged heterocyclyl-substituted pyrimidine compounds, a preparation method and medical use thereof. The compounds or pharmaceutical compositions comprising same can be used as JAK1 and TYK2 kinase inhibitors for treating JAK1 and TYK2 kinase activity-related diseases such as inflammations, autoimmune diseases and cancers.

Abstract: A tricyclic compound having the structure represented by general formula (I), a pharmaceutical composition thereof, a preparation method therefor and the use thereof in the prevention and treatment of a variety of diseases caused by toxic aldehydes.

Abstract: A display substrate and a display device are disclosed. In the display substrate, a plurality of openings include a plurality of opening groups, the plurality of opening groups include a plurality of opening group rows, each of the opening groups includes a first opening and a second opening, the plurality of opening group rows includes a first opening group row and a second opening group row, the spacer is located between the first opening of the first opening group row and the second opening of the second opening group row, an orthographic projection of the first opening includes a first long edge, and an orthographic projection of the second opening includes a second long edge, the first long edge is parallel to the second long edge, an extension line of the first long edge is misaligned from an extension line of the second long edge.

Abstract: A display panel, comprising a first insulating structural layer, a first crack detection line, a second insulating structural layer and a second crack detection line which are sequentially arranged on a substrate, wherein the first crack detection line and the second crack detection line are both located in a peripheral area and are arranged around a display area, one end of the first crack detection line is configured to receive a detection signal, and the other end of the first crack detection line is configured to output a first output signal, and one end of the second crack detection line is configured to receive a detection signal and the other end of the second crack detection line is configured to output a second output signal.

Abstract: A battery cell, including a first electrode plate and a second electrode plate. The first electrode plate includes a first current collector and a first active layer, the first electrode plate includes a first end portion, the first end portion is arranged on an outer side of the battery cell, and the first active layer is arranged on a surface of the first current collector in the first end portion. The first electrode plate and the second electrode plate are spaced apart and wound, and an electrode plate at the outermost circle of the battery cell is the first electrode plate. A first end face, and a first cambered zone connected to the first end face are defined. The first end portion is disposed in the first cambered zone. Also, a battery and electronic apparatus using the battery cell.

Abstract: A curriculum optimisation method, apparatus, and system are provided. The method at least includes: collecting lecture information, the lecture information includes a lecture video; performing knowledge point recognition on the lecture video to obtain knowledge point information; segmenting the lecture video according to the knowledge point information; evaluating the lecture video segmented to obtain an optimum video of each of knowledge points; and making courseware according to structural information corresponding to the optimum video of each of the knowledge points, to obtain optimized courseware.

Abstract: A curriculum optimisation method, apparatus, and system are provided. The method at least includes: collecting lecture information, the lecture information includes a lecture video; performing knowledge point recognition on the lecture video to obtain knowledge point information; segmenting the lecture video according to the knowledge point information; evaluating the lecture video segmented to obtain an optimum video of each of knowledge points; and making courseware according to structural information corresponding to the optimum video of each of the knowledge points, to obtain optimized courseware.

Abstract: A battery cell includes a first electrode plate, a second electrode plate, and an insulating adhesive. The first electrode plate includes a first current collector, a first coating, and a first active layer, the first coating is disposed between the first current collector and the first active layer and includes a thermal expansion material. The first electrode plate and the second electrode plate are wound at intervals, the first electrode plate is the outermost electrode plate of the battery cell and further includes a first end which is a winding ending end, a surface of the first current collector at the first end facing toward the center of the battery cell is provided with the first active layer. The insulating adhesive includes a first sub-insulating adhesive disposed on a surface of the first current collector on the outermost side of the battery cell facing away from the first active layer.

Abstract: An electrode assembly formed by winding a first electrode plate, a separator and a second electrode plate. The first electrode plate comprises a first current collector and a first active material layer arranged on a surface of the first current collector. A winding terminating end of the first electrode plate is positioned on an outer side of a winding terminating end of the second electrode plate facing away from a winding core. The first active material layer on the winding terminating end of the first electrode plate covers one surface of the first current collector facing toward the second electrode plate, The electrode assembly further comprises a first adhesive member arranged on an outer surface of the electrode assembly. The electrode assembly takes the winding terminating end of the first electrode plate as the tail end. The application further provides a battery having the same.

Abstract: An object encoding and computation method in a database system, where a global object sample space is constituted based on correlation between a plurality of object sample spaces in a database. A global dictionary table is created in the global object sample space to provide a globally unique encoding value for each object, set the encoding value as an object identifier (ID) of the object, and ensure that the object ID and object description information are in a one-to-one mapping relationship. The database object is encoded and compressed based on the global dictionary table. Further, the object ID is directly used for database query computation.

Abstract: The disclosure belongs to the technical field of organic photoelectric materials, and discloses carbonyl containing organic electroluminescent materials and use thereof in OLED. The carbonyl containing organic electroluminescent materials have a structure of formula I, wherein R1 and R2 are different in Formula I, R1 and R2 are different electron-donating groups of aromatic ring derivatives; R1 is an electron-donating groups of hole transport host materials or electron-donating groups of bipolar transport host materials. The luminescent materials of the present disclosure are organic electroluminescent materials based on derivatives of a host material and a benzoyl group. They have both AIE and delayed fluorescence characteristics with high-efficiency solid-state emission, high exciton utilization, and bipolar features.

Abstract: An electrode assembly formed by winding a first electrode plate, a separator and a second electrode plate. A winding terminating end of the first electrode plate is positioned on an outer side of a winding terminating end of the second electrode plate facing away from a winding core. A first active material layer on the winding terminating end of the first electrode plate covers one surface of the first current collector facing toward the second electrode plate. The other surface of the first current collector on the winding terminating end of the first electrode plate facing away from the second electrode plate is not coated with the first active material layer. The electrode assembly does not have a plain aluminum foil at the outermost ring, which enhances the energy density of lithium-ion batteries and improves drop safety. The application further provides a battery having the same.

Abstract: A method and an apparatus for determining a structured query language (SQL) execution plan are provided to optimize determining of the SQL execution plan and improve execution efficiency of the SQL execution plan. The SQL execution plan corresponds to at least one relation table. During an Nth iteration, the method includes obtaining a first iteration parameter generated after a first plan tree is executed on the at least one relation table during an (N?1)th iteration, where N is a natural number greater than 1, establishing a second plan tree according to the first iteration parameter, and determining the first plan tree or the second plan tree as the SQL execution plan when a difference between the second plan tree and the first plan tree is not greater than a first threshold.