Abstract: A backlight module includes a light guide plate having a bottom surface, a light exit surface, and a light incident surface a substrate located on a side of the bottom surface away from the light exit surface; first light-emitting devices located on a side of the substrate proximate to the bottom surface second light-emitting devices disposed opposite to the light incident surface; and a prism sheet located on a side of the light guide plate away from the substrate. The first light-emitting devices are configured to emit first light, so that the first light passes through the light guide plate and the prism sheet to become light of a first viewing angle. The prism sheet is configured to cooperate with the light guide plate to modulate second light emitted by the second light-emitting devices into light of a second viewing angle which is smaller than the first viewing angle.

Abstract: The present disclosure provides a method for detecting and tracking a low-observable target with a boost-to-glide trajectory under a condition of slant range ambiguity, and belongs to the field of detection and tracking of near-space hypersonic targets. The method includes: configuring an alternating pulse repetition frequency model for radar ranging; defining an extended non-coherent accumulation model in a distance-time plane for target detection; configuring an S-type recursive energy tracking model for target tracking; designing a recursive energy filter, conducting update by recursive energy to keep target tracking at a high signal-to-noise ratio, and obtaining a target trajectory by using a filter algorithm. According to the method of the present disclosure, pulse repetition frequencies within a same sampling period are designed to a constant value, so that there is enough energy for coherent accumulation detection.

Abstract: An illustrative camera calibration system may identify a common feature present within a scene and visible in each of 1) a first image of the scene captured by a first camera from a first pose represented by a first set of calibration parameters, and 2) a second image of the scene captured by a second camera from a second pose represented by a second set of calibration parameters. The system may estimate a 3D position of the common feature with respect to a global coordinate system associated with the scene and determine that the first set of calibration parameters is more accurate than the second set of calibration parameters. In response to this determination, the system may revise the second set of calibration parameters based on the estimated 3D position of the common feature and the first set of calibration parameters. Corresponding methods and systems are also disclosed.

Abstract: The present disclosure provides a method for detecting and tracking a low-observable target with a boost-to-glide trajectory under a condition of slant range ambiguity, and belongs to the field of detection and tracking of near-space hypersonic targets. The method includes: configuring an alternating pulse repetition frequency model for radar ranging; defining an extended non-coherent accumulation model in a distance-time plane for target detection; configuring an S-type recursive energy tracking model for target tracking; designing a recursive energy filter, conducting update by recursive energy to keep target tracking at a high signal-to-noise ratio, and obtaining a target trajectory by using a filter algorithm. According to the method of the present disclosure, pulse repetition frequencies within a same sampling period are designed to a constant value, so that there is enough energy for coherent accumulation detection.

Abstract: The present disclosure relates to a content input method and apparatus for instant messaging software, and a device and a medium. The instant messaging software includes a first input box and a second input box, wherein the first input box and the second input box are switched by means of a switching control, and the sizes of the first t input box and the second input box are different. The method comprises: receiving target input content, which is input into a first input box, and displaying the target input content in the first input box; and in response to the triggering of a switching control, displaying the target input content in a second input box.

Abstract: A wideband variable impedance load for high volume manufacturing qualification and diagnostic testing of a radio frequency power source, an impedance matching network and RF sensors for generating plasma in a semiconductor plasma chamber for semiconductor fabrication processes. The wideband variable impedance load may comprise a fixed value resistance operable at a plurality of frequencies and coupled with a variable impedance network capable of transforming the fixed value resistance into a wide range of complex impedances at the plurality of frequencies. Response times and match tuning element position repeatability may be verified. Automatic testing, verification and qualification of production and field installed radio frequency power sources for plasma generation are easily performed.

Abstract: The memory circuit structure includes: a storage array, wherein the storage array includes at least two storage units; a decoder connected with a bit line and a word line of the storage array respectively; a programming circuit configured to generate a voltage pulse or a constant current pulse; a polarity switching circuit connected with the programming circuit, and configured to implement a switching between a voltage programming and a current programming of the programming circuit under a set operation and a reset operation; a detection circuit connected with the storage array, and configured to detect a detection signal of a current or a voltage corresponding to the specific storage unit in the storage array and feed back the detection signal to a control unit, wherein the detection signal output by the detection circuit is configured to enable the polarity switching circuit to switch; and the control unit.

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: Some embodiments provide a non-transitory machine-readable medium that stores a program. The program may generate a visualization comprising a set of data from a data model. The set of data comprises a set of measure values categorized according to a plurality of dimensions. The program may receive a request to rank the set of measure values based on a first dimension in the plurality of dimensions and a second dimension in the plurality of dimensions. The program may in response to receiving the request, generating a query for a subset of the set of data for the visualization. The query comprises a set of conditions. The program may send the query to a computing system for processing. The program may receive, from the computing system, the subset of the set of data. The program may update the visualization to include the subset of the set of data.

Abstract: The present disclosure discloses a composite crossarm and a power transmission tower. The composite crossarm includes at least one insulator (1100) and at least one arcing device (1200) connected to the insulator (1100). Each of the at least one arcing device (1200) includes a high-voltage end arcing component (1210) and a low-voltage end arcing component (1220). The high-voltage end arcing component (1210) is connected to a high-voltage end of the insulator (1100), and the low-voltage end arcing component (1220) is connected to a low-voltage end of the insulator (1100). The at least one arcing device (1200) includes a first arcing device having an electrical clearance between the high-voltage end arcing component (1210) and the low-voltage end arcing component (1220) less than an electrical clearance between the high-voltage end and the low-voltage end of any one of the at least one insulator (1100).

Abstract: Some embodiments provide a non-transitory machine-readable medium that stores a program. The program may generate a visualization comprising a set of data from a data model. The set of data comprises a set of measure values categorized according to a plurality of dimensions. The program may receive a request to rank the set of measure values based on a first dimension in the plurality of dimensions and a second dimension in the plurality of dimensions. The program may in response to receiving the request, generating a query for a subset of the set of data for the visualization. The query comprises a set of conditions. The program may send the query to a computing system for processing. The program may receive, from the computing system, the subset of the set of data. The program may update the visualization to include the subset of the set of data.

Abstract: A liquid storage device includes a tank body including multiple working cycle drain ports for supplying solution to multiple work chambers and a thermal cycle liquid injection port for introducing heated solution into the tank body. The working cycle drain ports are located on opposing side walls of the tank body. A side wall connecting the two side walls has the thermal cycle liquid injection port positioned near or at the middle of the length of the side wall. The liquid storage device further includes a guide element located inside the tank body. The guide element is connected to the thermal cycle liquid injection port, allowing the solution entering from the thermal cycle liquid injection port to flow through the guide element into the tank body and toward each of the working cycle drain ports.

Abstract: A printed circuit board, a display device and an image display system are provided. The printed circuit board is configured to drive a display panel and includes a polygonal outline including a first side and a second side, and the extension direction of the first side and the extension direction of the second side intersect and are not perpendicular to each other. The printed circuit board includes a first interface configured to be electrically connected to a controller; and a second interface configured to be electrically connected to the display panel. The length extension direction of the first interface forms a first included angle with respect to the extension direction of the first side, and the length extension direction of the second interface forms a second included angle with respect to the extension direction of the second side, each included angle is not greater than 20 degrees.

Abstract: A message selection method, a message selection apparatus, an electronic device, a computer-readable storage medium, and a computer product is provided. The method includes: displaying a first control in a message window in response to an operation of entering a message multi-selection mode triggered by a user, wherein the first control is used to select multiple messages; determining a target position of the first control in a message in the message window in response to a position changing operation by the user on the first control; and selecting messages below the target position in response to a triggering operation by the user on the first control.

Abstract: A high-precision multi-pole magnetoelectric encoder includes a mounting seat, a rotating shaft, a single-pole magnet ring, a single-pole signal processing board, a shielding shell, an n-pole magnet ring, an n-pole signal processing board, a housing, a conductive rubber pad, an aviation plug, bearings, copper columns, Hall components, and assembly screws. The magnetoelectric encoder improves the environmental adaptability and replaceability of the high-precision multi-pole magnetoelectric encoder by redesigning the structure of the multi-pole encoder. It eliminates errors caused by changes in the position of magnets and Hall sensors during the replacement process, reduces interference caused by the multi-pole magnet encircling the single-pole magnet, enhances resistance to electromagnetic interference, thereby increasing the detection accuracy of the magnetoelectric encoder, and improves the performance and competitiveness of the product.

Abstract: The present disclosure provides a display control method and apparatus, an electronic device, and a storage medium. The present disclosure provides a display control method, including: determining a target control associated with a target trigger rule in response to at least one trigger rule being hit, where the target trigger rule is the hit trigger rule; and displaying the target control in an input box of a chat interface or an associated area of the input box, where the target control is configured to perform a corresponding function after being triggered.

Abstract: The present disclosure provides use of lysophosphatidic acid (LPA) as a feed additive in controlling porcine infectious diarrhea, and belongs to the technical field of feed nutrition. The LPA is a type of lipid substance that is produced endogenously in vivo and can reduce a large secretion level of intestinal fluid in piglets caused by Escherichia coli infection via inhibiting cystic fibrosis transmembrane-conductance regulator (CFTR)-dependent iodine efflux. In this way, a susceptibility of weaned piglets to the Escherichia coli is prevented to effectively maintain the intestinal health of piglets. LPA is an endogenous substance in vivo, and it is first discovered that adding the LPA into a feed can control Escherichia coli-caused infectious diarrhea in the piglets.

Abstract: A printed circuit board, a display device and an image display system are provided. The printed circuit board is configured to drive a display panel and includes a polygonal outline including a first side and a second side, and the extension direction of the first side and the extension direction of the second side intersect and are not perpendicular to each other. The printed circuit board includes a first interface configured to be electrically connected to a controller; and a second interface configured to be electrically connected to the display panel. The length extension direction of the first interface forms a first included angle with respect to the extension direction of the first side, and the length extension direction of the second interface forms a second included angle with respect to the extension direction of the second side, each included angle is not greater than 20 degrees.

Abstract: Some embodiments provide a non-transitory machine-readable medium that stores a program. The program may receive a first selection of a data model as a data source for a visualization, wherein the data model specifies data to be organized according to a set of measures and a set of dimensions. The program may receive a second selection of a dimension value for a dimension in the set of dimensions, wherein each measure in the set of measures is a particular dimension value for the dimension. The program may in response to the second selection, generating a state representation of the visualization that includes the selected dimension value for the dimension. The program may generate the visualization based on the state representation of the visualization.