Abstract: A method, device, and computer readable medium for controlling drift of a vehicle. The drift of the vehicle is controlled by acquiring a slip rate level and steering information of the vehicle in a drift mode opening state; determining a target drift parameter according to the slip rate level, the steering information and a current vehicle velocity, the target drift parameter includes a target yaw rate; determining a steering compensation quantity according to a current actual yaw rate and the target yaw rate; determining front axle torque, rear axle torque and rear wheel brake torque according to the steering compensation quantity and the steering information; and controlling the vehicle to drift travelling according to the front axle torque, the rear axle torque and the rear wheel brake torque, and controlling a power-assisted steering motor to perform steering compensation according to the steering compensation quantity and the vehicle velocity.

Abstract: A sodium-containing oxide positive electrode material and a preparation method therefor and use thereof are disclosed. Also disclosed are a positive electrode plate and uses thereof.

Abstract: A replenishment quantity determination method and apparatus, a device, a storage medium, and a program product are provided. The method comprises: obtaining the inventory information of a warehouse and the product information of a product stored in the warehouse, and determining a target product; determining a total inventory quantity according to a substitution chain to which the target product belongs; determining a target inventory quantity and an inventory lower limit value according to the product information; if the total inventory quantity is less than the inventory lower limit value, and the inventory usage form of each product in the substitution chain comprises a bidirectional usage relationship, determining a replenishment ratio of the product; and according to each replenishment ratio, the target inventory quantity, and the total inventory quantity, determining the replenishment quantity of each product having the bidirectional inventory usage relationship in the substitution chain.

Abstract: A power supply apparatus, a three-phase transformer circuit, and a charging pile. The power supply apparatus includes a turns ratio switching circuit, a connection relationship switching circuit, a three-phase transformer, and two three-phase rectifier bridge circuits. A three-phase primary winding of the three-phase transformer is configured to receive a three-phase alternating current. A three-phase secondary winding of the three-phase transformer is configured to output a three-phase alternating current to each of the two three-phase rectifier bridge circuits. A running mode of the three-phase transformer includes a first turns ratio mode and a second turns ratio mode. The turns ratio switching circuit is configured to switch a quantity of turns of the three-phase primary winding, to switch the running mode of the three-phase transformer.

Abstract: An optical system and a head mounted display are disclosed. The optical system comprises: a third lens, a second lens and a first lens arranged successively along a propagation direction of incident light. There are three Fresnel surfaces in the optical system, and two of the Fresnel surfaces are arranged adjacent to each other. The third lens has a positive focal power. A field of view of the optical system is ?100 degrees. The present disclosure provides a solution of optical structure with short-focus, high light efficiency and large FOV. The optical system according to the present disclosure can be applied in, for example, a head mounted display.

Abstract: Disclosure includes systems, methods and devices to program a memory device, involving a first and a second programming operations on a memory cell of the memory device. In the first programming operation, the memory cell is programmed into an intermediate state. In the second programming operation, the memory cell is programmed from the intermediate state into a target state. The first programming operation includes providing a bias voltage to a bit line coupled to the memory cell and providing a programming voltage to a word line coupled to the memory cell. An amplitude of the bias voltage provided to the bit line depends on the intermediate state or the target state the memory cell to be programmed into. Accordingly, no verification operation need to be performed on the memory cell in the first programming operation.

Abstract: A ? ray detector structure based on a p-i-n junction of perovskite and a calibration method are provided. An ultrathick intrinsic perovskite crystal grows by utilizing temperature inversion solution crystallization as a ? ray photon absorber, a p-type perovskite epitaxial layer grows on one side of the intrinsic perovskite crystal by adopting an epitaxial doping growing method, a n-type perovskite epitaxial layer grows on the other side, a dark state current and noise are inhibited by utilizing the p-i-n junction of perovskite, and a large-sized perovskite crystal is used to absorb and convert more ? photons. Detected signals at a cathode terminal and an anode terminal are measured simultaneously. The longitudinal interaction depths of the ? photons are calibrated according to the ratio of the two signals, and then detection events at the same depth are classified and counted respectively.

Abstract: The present application relates to a display panel, which includes at least one switching circuit and at least one first-type GOA circuit. The switching circuit is configured to switch and transmit a first signal outputted by the first-type GOA circuit to one of the rows of scan lines connected to the switching circuit and input a second signal to the remaining rows of scan lines connected to the switching circuit. This changes the fact that only one row of scan line can be driven by one GOA circuit in the conventional art, thereby reducing the number of GOA circuits.

Abstract: A thin film transistor and an array substrate, including a light-shielding layer and an active layer. The light-shielding layer includes a first light-shielding pattern, a second light-shielding pattern and a third light-shielding pattern. The active layer includes a channel area, a first conductive area and a second conductive area located on both sides of the channel area. An orthogonal projection of the first light-shielding pattern on the substrate at least covers an orthogonal projection of the channel area on the substrate. An orthographic projection of the second light-shielding pattern on the substrate overlaps at least a part of an orthographic projection of the first conductive area on the substrate. An orthographic projection of the third light-shielding pattern on the substrate overlaps at least a part of an orthographic projection of the second conductive area on the substrate.

Abstract: A light-emitting substrate has a light-emitting region and a test region. A plurality of light-emitting device groups and a plurality of driving circuits are disposed in the light-emitting region. The driving circuits include at least one selected driving circuit, and a selected driving circuit includes at least one first-type output terminal and at least one second-type output terminal. The first-type output terminal is electrically connected to the light-emitting device group. A power line is electrically connected to the light-emitting device groups. A first test pad and a second test pad are disposed in the test region. The first test pad is electrically connected to a second-type output terminal of the selected driving circuit, and the second test pad is electrically connected to the power line. The first test device group is electrically connected to the first test pad and the second test pad.

Abstract: A build-up film with low dielectric loss, a preparation method therefor, and a circuit substrate structure are provided. The build-up film is prepared from raw materials including 5-10 parts by mass of monofunctional benzoxazine having indene oligomer, 40-65 parts by mass of polymerized aromatic-based maleimide, 30-50 parts by mass of allyl benzoxazine, 0.1-3 parts by mass of initiator, 250-400 parts by mass of inorganic filler, and 0.1-5 parts by mass of silane coupling agent. The build-up film has low dielectric loss and high tensile strength. Low dielectric loss enables it to be applied in the field of 5G. For example, the build-up film can be used to packaging integrated circuit substrates, which is conducive to minimizing the transmission loss.

Abstract: The present application provides a display panel and a display terminal. The display panel includes a first metal layer and a second metal layer. The first metal layer includes data lines arranged in a display area and extending along a first direction. The second metal layer includes first transmission lines in the display area. Each of the first transmission lines is electrically connected to at least one data line. At least a portion of each of the first transmission lines extends along the first direction.

Abstract: A method for generating driving signal is provided. The method includes generating by a first circuit, a first driving signal for a first frame of image, the first driving signal comprising a plurality of first pulse width modulation signals; transmitting the plurality of first pulse width modulation signals to a modulation controller; detecting a vertical synchronization signal; determining whether a most recent first pulse width modulation signal is partially generated when the vertical synchronization signal is detected; and upon determination that the most recent first pulse width modulation signal is partially generated, determining whether to delay generating a second driving signal for a second frame of image.

Abstract: A method and an apparatus for generation a high definition map, a device and a computer storage medium, which relate to automatic driving and deep learning technologies in the field of artificial intelligence technologies, are disclosed. An implementation includes: acquiring point cloud data and front-view image data which are collected respectively by a plurality of collecting devices at a plurality of location points to obtain a sequence of point clouds and a sequence of front-view images; performing registration of the front-view images and the point clouds on the sequence of point clouds and the sequence of front-view images; transforming the sequence of front-view images into a top-view image based on the result of the registration and determining coordinate information of each pixel in the top-view image; and identifying map elements of the top-view image to obtain the high definition map.

Abstract: Some embodiments of the present disclosure provide methods and systems for pose determination of a mobile subject. The method may include obtaining odometer data acquired by an odometer of a mobile subject at a current time, laser data of a scene around the mobile subject acquired, at the current time, by a laser radar of the mobile subject, and a reference map of a region where the scene is located. The method may also include determining a first matching result based on the reference map and the laser data. The method may also include reconstructing a sub map reflecting the scene based on the laser data and determining a second matching result based on the sub map and the laser data. The method may further include determining a target pose of the mobile subject based on at least two of the odometer data, the first matching result, or the second matching result.

Abstract: A pixel circuit and a driving method thereof, a display substrate, and a display device are provided. In the pixel circuit, a data writing circuit is configured to control a connection between a data line and a second terminal of a driving circuit under control of a first scanning signal provided by a first scanning line; a reset circuit is configured to control a connection between a reset voltage line and the second terminal of the driving circuit under control of a third scanning signal provided by a third scanning line; or the reset circuit is coupled to the third scanning line, the reset voltage line and a first terminal of the driving circuit, and is configured to control a connection between the reset voltage line and the first terminal of the driving circuit under control of the third scanning signal.

Abstract: A display panel is provided by the present application, the display panel includes a display area, and a non-display area located on a side of the display area, and further includes an array substrate and a color filter layer disposed on both sides of a light-emitting structure layer, the light-emitting structure layer includes light-emitting pixels located in the display area; the color filter layer includes a light-shielding part, blocking parts, and color resist parts; the light-shielding part is defined in first openings corresponding to the light-emitting pixels and in second openings defined in the non-display area; the color resist parts are located in the first openings, and the blocking parts are located in the second openings.

Abstract: The present invention provides a buckling-restrained brace out-of-plane stability design method considering a bidirectional seismic action.

Abstract: The present application provides a display panel and a display terminal. The display panel includes a display area and a fan-out area. The fan-out area includes a plurality of fan-out wirings, and each of the fan-out wirings includes a straight section and an inclined section. The display panel further includes a plurality protection members arranged in one-to-one correspondence with the inclined sections of the plurality of fan-out routing lines, and each of the protection members is disposed close to a corresponding one of the inclined sections.

Abstract: A method of managing locks in a database is performed by a row lock manager of a database master. The method includes receiving, from a transaction executing on the database master, a row lock request for a row in the database. The row lock request includes a page in the database where the row is located. The row lock request also includes a row lock mode of sufficient strength to perform the transaction. Then, sending, to a page lock manager, a request for a covering lock of the page. The request specifies a page lock mode of sufficient strength to satisfy the row lock mode. Also, receiving, from the page lock manager, a grant of the page lock. The page lock includes information on row locks of rows located in the page. Then, granting, to the transaction, the row lock.