Abstract: The application discloses a classification method and a system of UAV hyperspectral vegetation species based on a deep learning, where the method includes the following steps: collecting hyperspectral images by a UAV; preprocessing collected hyperspectral images to obtain preprocessed images, and performing a stitching mosaicking preprocessing on the preprocessed images to obtain hyperspectral orthoimages; labeling the hyperspectral orthoimages to obtain a label data set; performing a vegetation index fusion on the hyperspectral orthoimages to obtain vegetation index-hyperspectral orthoimages; constructing a grassland vegetation classification model based on the vegetation index-hyperspectral orthoimages and the label data set, and completing a vegetation species classification by using the grassland vegetation classification model.

Abstract: A 2-piperidyl or 2-pyrazolyl substituted pyrimidine compound, which is a compound represented by formula (I) or a pharmaceutically acceptable salt, an isotopic variant, a tautomer, a stereoisomer, a prodrug, a polymorph, a hydrate or a solvate thereof. A pharmaceutical composition comprising the compound, and a use of the pharmaceutical composition in the treatment of diseases mediated by an EGFR protein and mutants thereof.

Abstract: A device described herein may receive an indication that the device is not authorized to access a first type of core network (e.g., a Fifth Generation (“5G”) Core (“5GC”)), and may detect that a first core network, of the first type of core network, is available for communication. The device may detect that a second core network, of a second type of core network (e.g., an Evolved Packet Core (“EPC”)), is available for communication. Based on the indication that the device is not authorized to access the first type of core network, the device may request establishment of a communication session with the second core network (e.g., in lieu of requesting access the first core network).

Abstract: A control method of a display panel. The method includes the following steps: determining a target refresh frequency of the display panel; determining a data chopping rule adapted to the target refresh frequency according to the first mapping relationship; providing a data signal to the display panel according to a data chopping rule.

Abstract: A backrest locking mechanism adapted for a backrest and a base of a child safety seat is provided. The backrest is detachably connected to the base. A guiding slot is formed on the base. A mounting arm protrudes from the backrest and is configured to be at least partially accommodated inside the guiding slot and slidable relative to the guiding slot. The backrest locking mechanism includes a locking pin and a locking component. The locking pin is disposed on one of the mounting arm or the guiding slot. The locking component is partially located inside the other of the mounting arm or the guiding slot. A locking hole structure is formed on the locking component. The locking pin and the locking hole structure engage with each other when the mounting arm is at least partially accommodated inside the guiding slot. Besides, a related child safety seat is also provided.

Abstract: A light detection module, a light detection method and a display device are provided. The light detection module includes N light sensing circuits, a control circuit, a conversion circuits and a detection circuits; N being a positive integer; the N light sensing circuits respectively sense light signals of different colors to generate corresponding photocurrents; the control circuit is configured to control to provide the photocurrents generated by the light sensing circuits to the conversion circuit in a time division manner, and to control a transfer coefficient of the conversion circuit; the conversion circuit is configured to convert the photocurrent according to the transfer coefficient to obtain an analog output voltage; the detection circuit is configured to obtain characteristics of the light signal according to the analog output voltage.

Abstract: A light detection structure may include a photoelectric conversion device, a current conversion device and a control device; the photoelectric conversion device is electrically connected with the current conversion device, configured to convert an incident light of N colors into current signals, and providing the current signals to the current conversion device under a control of a control signal; the current conversion device is configured to convert the current signals into voltage signals corresponding to the current signals; the control device is electrically connected with the photoelectric conversion device and the current conversion device respectively, and is configured to generate the control signals and generate chromaticity parameters of light according to the voltage signals corresponding to the current signals, wherein the chromaticity parameters include brightness, color temperature and color coordinates.

Abstract: A photocurrent amplification circuit, an amplification control method, an optical detection module and a display apparatus are provided, where the photocurrent amplification circuit includes a photoelectric sensor, a compensation circuit, a reset circuit, an energy storage circuit and a drive circuit, and the photoelectric sensor is configured to sense the optical signal and convert the optical signal into the photocurrent signal; the compensation circuit controls the communication between the control terminal of the drive circuit and the first terminal of the drive circuit under the control of the compensation control signal; the reset circuit controls the communication between the first voltage terminal and the control terminal of the drive circuit under the control of the reset control signal.

Abstract: A test system and test method continuously and intelligently measures water content of subgrade in real time. The test system is based on the theory of resistivity, and is equipped with a wheeled machine to measure the water content of subgrade. The wheeled machine includes scroll roller. The test system includes: at least one set of electrode including four probes wherein detection parts of the four probes are linearly and equidistantly arranged on the scroll roller. The arrangement direction of the detection parts of the four probes is parallel to the axis of the scroll roller; a data integration apparatus is connected to the four probes and used for performing data calculation, analysis, and transmission; the electric source is connected to data integration apparatus and used for supplying a working current. The system and method can realize automatic signal collection, non-destructive detection of subgrade soil and dynamic water content measurement.

Abstract: A display controller, a display device, a display system, and a control method are provided. The display controller includes: a flag-signal circuit configured to send a flag-signal to an application processor; an image processing circuit configured to obtain second current image data in response to receiving first current image data from the application processor, wherein the first current image data is sent by the application processor in response to receiving the flag-signal sent from the flag-signal circuit; and a drive circuit configured to generate a first drive control signal in response to receiving the second current image data from the image processing circuit.

Abstract: The present disclosure provides a pixel array and a display apparatus. The pixel array includes a plurality of first sub-pixels having a first color, a plurality of second sub-pixels having a second color, and a plurality of third sub-pixels having a third color; wherein at least a portion of at least one first sub-pixel of the plurality of first sub-pixels includes an inward indentation, at least a portion of at least one second sub-pixel of the plurality of second sub-pixels includes an inward indentation, and at least one of the plurality of third sub-pixels adjacent to the at least one second sub-pixel includes an outward protrusion corresponding to the inward indentation of the at least one second sub-pixel.

Abstract: A backrest locking mechanism adapted for a backrest and a base of a child safety seat is provided. The backrest is detachably connected to the base. The backrest locking mechanism includes a locking pin, a locking component and an operating component. The locking pin is disposed on the backrest. The locking component is disposed on the base. A locking hole structure is formed on the locking component. The locking pin is configured to detachably engage with the locking hole structure. The operating component is movably disposed on the backrest or the base. The operating component drives the locking pin and the locking hole structure to engage with or disengage from each other when the operating component is operated. Furthermore, a child safety seat having the aforementioned backrest locking mechanism is also provided.

Abstract: Methods and structures to achieve low voltage (LV) and high voltage (HV) scale-down by suppressing the short channel effect of LV as well as increasing breakdown voltage of HV transistor are provided. A semiconductor device comprises a first transistor comprising a first well region of a first conductivity type, a first gate region disposed above the first well region, and a first contact region including a first epitaxial semiconductor adjacent to the first gate region; and a second transistor comprising a second well region of a second conductivity, a second gate region disposed above the second well region, and a second contact region including a second epitaxial semiconductor adjacent to the second gate region.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects. a user equipment (UE) may transmit a first message of a four-step random access channel (RACH) procedure to a base station. The UE may receive a second message of the four-step RACH procedure. The UE may transmit a third message of the four-step RACH procedure. The UE may determine that the third message was not successfully decoded by the base station. The UE may retransmit the third message based at least in part on applying a power boosting algorithm to increase an uplink transmission power. wherein the power boosting algorithm is applied based at least in part on a power offset between the third message and the first message satisfying a threshold and a transmit power control (TPC) command not being received from the base station. Numerous other aspects are described.

Abstract: Disclosed is a flash closed heat exchanger, comprising a closed housing. A negative pressure fan is provided on the closed housing. A negative pressure environment is formed inside the closed housing by means of the negative pressure fan. A water atomization device is provided inside the closed housing. The water atomization device sprays atomized water into the inside of the closed housing, so that the atomized water evaporates into steam in the negative pressure environment. In the flash closed heat exchanger, the evaporation of atomized water is promoted in a closed negative pressure environment.

Abstract: A photocurrent amplification circuit, an amplification control method, an optical detection module and a display apparatus are provided, where the photocurrent amplification circuit includes a photoelectric sensor, a compensation circuit, a reset circuit, an energy storage circuit and a drive circuit, and the photoelectric sensor is configured to sense the optical signal and convert the optical signal into the photocurrent signal; the compensation circuit controls the communication between the control terminal of the drive circuit and the first terminal of the drive circuit under the control of the compensation control signal; the reset circuit controls the communication between the first voltage terminal and the control terminal of the drive circuit under the control of the reset control signal.

Abstract: A touch display panel has a display area and a fan-out area located at a side of the display area. The display area includes a first display region and a second display region located around the first display region. The touch display panel includes a display substrate and a touch function layer. The display substrate has a display side, and the touch function layer is located on the display side of the display substrate. The touch function layer includes a plurality of touch electrodes and a plurality of touch leads. The plurality of touch electrodes are located in the first display region, and the plurality of touch leads are electrically connected to the plurality of touch electrodes and extend to the fan-out area through the second display region.

Abstract: A light-emitting device includes a substrate, an induction coil and at least one light-emitting unit. The induction coil is located on a side of the substrate, and the induction coil includes turns of conductive wiring disposed helically around a central region. The at least one light-emitting unit is located on a side of the induction coil away from the substrate. The light-emitting unit includes a first electrode and a second electrode, one of which is connected to an innermost turn of conductive wiring in the induction coil, and another one of which is connected to an outermost turn of conductive wiring in the induction coil. An area of a portion the central region covered by the at least one light-emitting unit in a direction perpendicular to the substrate is less than or equal to 50% of an area of the central region.