Abstract: A method for preparing a benzofuran derivative. Specifically, the present invention relates to a method for preparing a benzofuran derivative represented by formula L The preparation method greatly improves yield and has good application prospects.

Abstract: Disclosed are a method and an apparatus for determining time of arrival, a signal receiving device, and a non-transitory computer readable storage medium. The method for determining time of arrival includes: generating time of arrival correction information according to front edge information of theoretical autocorrelation waveforms of positioning signals having different fading values; calculating a front edge slope corresponding to a front edge reference point of a correlation waveform of an actually received signal; and determining target correction information from the time of arrival correction information according to the front edge slope, and determining the time of arrival of the actually received signal based on the target correction information.

Abstract: A method and device for determining a time of arrival (TOA), a terminal device, and a non-transitory computer-readable storage medium are disclosed. The method may include: determining a detection start time on a correlation waveform based on a leading edge detection threshold; determining a noise threshold on the correlation waveform, and determining a quasi-TOA according to the detection start time; and determining the TOA according to data information in a target area of the correlation waveform and the noise threshold, where the target area is determined based on the quasi-TOA and a detection length.

Abstract: Provided is an airflow disturbance type carbon fiber spreading device. The device includes an unwinding module, an unwinding tension control module, an airflow disturbance spreading module, a winding tension stabilizing module, a deviation correction module and a winding module which are sequentially arranged along a feeding direction. The spreading mechanism includes an airflow disturbance spreading module, the airflow disturbance spreading module includes two airflow disturbance spreading assemblies, each airflow disturbance spreading assembly includes a centrifugal fan, the centrifugal fan communicates with the bottom of an airflow duct, and three spreading guide shafts are arranged side by side on the top of the airflow duct. A tension adjusting assembly is provided between the airflow disturbance spreading assemblies. A seventh spreading guide shaft (13) is located at the upper port of an airflow duct I (25) and is connected to a slider module II (34).

Abstract: A pixel arrangement including: first groups of sub-pixels arranged in a first direction, each of the first groups including first sub-pixels and third sub-pixels arranged alternately; and second groups of sub-pixels arranged in the first direction, each of the second groups including third sub-pixels and second sub-pixels arranged alternately. The first groups and the second groups are alternately arranged in a second direction perpendicular to the first direction. The first groups and the second groups are arranged to form third groups of sub-pixels arranged in the second direction and fourth groups of sub-pixels arranged in the second direction. The third groups and the fourth groups are alternately arranged in the first direction. Each of the third groups includes first sub-pixels and third sub-pixels arranged alternately. Each of the fourth groups includes third sub-pixels and second sub-pixels arranged alternately.

Abstract: Visual composition of stateful metrics includes receiving, via a user interface, an indication of a user interaction with respect to a visual representation of a timeline operator included in a stateful metric that is being visually composed. It further includes, based on the indication of the user interaction with respect to the visual representation of the timeline operator, providing visual feedback.

Abstract: An array substrate, a display device, and a drive-for-heating method for the display device. The array substrate includes: pixel units on a first base substrate; a data line on the first base substrate; a touch signal line on the first base substrate; a heating element on the first base substrate, and configured to generate heat under driving of a drive-for-heating current; a common electrode on the first base substrate and reused as a touch electrode; and a pixel electrode on the first base substrate. The thin film transistor includes an active layer in a semiconductor layer and a gate electrode in a first conductive layer. The data line is in a second conductive layer, one of the pixel electrode and the common electrode is in a third conductive layer, and a layer where the heating element is located is between the semiconductor layer and the third conductive layer.

Abstract: A system includes a VCSEL element, a dielectric waveguide, and a dielectric grating coupler. The VCSEL element includes a first reflector region, a second reflector region opposite to the first reflector region, and an active region between the first reflector region and second reflector region. The dielectric waveguide is integrated with the VCSEL element. The grating coupler is formed on the dielectric waveguide for coupling an electromagnetic wave of the VCSEL element into the dielectric waveguide.

Abstract: Disclosed is an energy storage and steam generation system, including an electrode steam boiler. One side of the electrode steam boiler is connected with a boiler deaerator through a pipeline. A pipeline A is arranged at the top of the electrode steam boiler. The pipeline A is connected with a steam superheater, and an outlet of the steam superheater is provided with an external steam supply outlet pipeline. A molten salt steam generation bypass pipeline and a pipeline B are arranged on the steam superheater. One end of the molten salt steam generation bypass pipeline is connected to the steam superheater. A low-temperature molten salt storage tank is connected to the pipeline B, and a high-temperature molten salt storage tank is connected to the low-temperature molten salt storage tank through a pipeline. The other end of the molten salt steam generation bypass pipeline is connected to the high-temperature molten salt storage tank. Meanwhile, a generation method is further disclosed.

Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: constructing a list of merge candidates for a target block of a video in a coding mode based on motion vector difference (MVD); reordering the list of merge candidates for the target block; and performing a conversion between the target block and a bitstream of the video based on the reordered list of merge candidates. Compared with the conventional solution, the proposed method can advantageously improve the coding efficiency.

Abstract: A low-divergence multi-junction VCSEL (100,200) includes a first reflector region (103,203) over a substrate (104,204), a second reflector region (102,202) over the first reflector region (103,203), active regions (101,105,106,107,201,205,206,207) between the first reflector region (103,203) and the second reflector region (102,202), an oxide aperture (115,215) and an implantation region (108,109,208,209) between the first reflector region (103,203) and the second reflector region (102,202), and a surface relief structure (112,117,212,217).

Abstract: A method includes: receiving M scrambled models from M online service nodes; receiving descrambling secrets from T online service nodes, where a descrambling secret of any online service node is determined based on M first shared keys of the online service node corresponding to the M online service nodes and N?M second shared keys of the online service node corresponding to N?M offline service nodes; and determining an aggregated model, where disturbance vectors of the M scrambled models are determined based on the descrambling secrets from the at least T online service nodes, at least N?T+1 first subsecrets determined by each service node based on N first shared keys and a first disturbance item corresponding to the service node, and at least N?T+1 second subsecrets determined by the service node based on N second shared keys and a second disturbance item corresponding to the service node.

Abstract: A display device includes a display panel, a light source on a substrate, and an adjacent light source. The adjacent light source is spaced apart from the light source by a predetermined distance. The light source emits light to irradiate an interface between the substrate and a member of the display panel via a lens. Light emitted from the light source irradiates a spot on the interface via the lens with luminance below a darkness level. The spot is aligned with the adjacent light source in a direction perpendicular to the substrate.

Abstract: A zero calibration method includes: adding, based on a first forward kinematics model of a robotic arm of a robot, zero deviations of each joint to form a second forward kinematics model, and simultaneously solving the second forward kinematics model and the first forward kinematics model to obtain an end deviation function; sending target end pose instructions to the robotic arm in a current zero point situation, and acquiring a spatial deviation of an actual position of an end; inputting position information of each joint angle and the spatial deviation, after each stop of motion of the end, into the end deviation function, and performing phase shifting to obtain an objective optimization function; and solving the objective optimization function to obtain a zero deviation value.

Abstract: A display device includes a display panel, a first light source, and second light source. The first and second light sources are respectively aligned with a first spot and second spot in a direction perpendicular to a substrate. The first light source irradiates the first spot and a third spot with luminance of a first value, respectively. The first light source irradiates a midpoint between the first and second spots with a luminance value that is half of the first value.

Abstract: An automatic loading and unloading processing system includes a material storage assembly to store workpieces; a positioning device on a worktable; and a transport mechanism to transport the workpiece from the material storage assembly to the positioning device and transport the processed workpiece into the material storage assembly. The material storage assembly includes a material tray; fixing bases; a motion mechanism; and holders on the fixing base for fixing the workpiece, and the motion mechanism controls the movement of the material tray. The transport mechanism includes an auxiliary loading and unloading system arranged at a worktable to grab the holders and move horizontally; and a main loading and unloading system arranged on a main spindle to grab the holders and move vertically.

Abstract: A display device includes a display panel, a first light source, and second light source. The first and second light sources are respectively aligned with a first spot and second spot in a direction perpendicular to a substrate. The first light source irradiates the first and second spots with luminance of a first value and second value, respectively. The first light source irradiates a midpoint between the first and second spots with a luminance value that is half the addition of the first and second values.

Abstract: A power tool includes a transmission assembly configured to transmit power between a motor and an output assembly to drive an output shaft to oscillate back and forth; and an adjustment assembly for adjusting the transmission assembly. The adjustment assembly is configured to, when a load of the output shaft satisfies a preset value of the adjustment assembly, control the transmission assembly according to the load of the output shaft so that the transmission assembly adjusts an angle of oscillation of a work attachment.