Abstract: A pixel circuit, a pixel driving method, a display substrate, and a display device are provided. The pixel circuit includes a driving circuit, a first reset circuit, a first node control circuit, a first light-emitting control circuit and a light-emitting element. The first reset circuit writes a first initial voltage to a first electrode of the light-emitting element under control of a potential of the first node. The first node control circuit controls the potential of the first node according to a data voltage and a threshold voltage of the driving transistor included in the driving circuit. The first light-emitting control circuit controls connection between a second end of the driving circuit and the first electrode of the light-emitting element under control of a light-emitting control signal. The driving circuit is configured to generate a driving current.

Abstract: A method for controlling an unmanned aerial vehicle includes: receiving, by a signal receiving apparatus, an electromagnetic wave signal periodically transmitted by a signal transmitting apparatus; determining a Doppler frequency value of a current location of the unmanned aerial vehicle according to the electromagnetic wave signal; controlling the unmanned aerial vehicle to fly in a target flight path to a target location according to the Doppler frequency value of the current location; determining a target landing location corresponding to the unmanned aerial vehicle according to a plurality of Doppler frequency values determined in the target flight path of the unmanned aerial vehicle, wherein a location of the signal transmitting apparatus or the signal receiving apparatus is below the target landing location; and controlling the unmanned aerial vehicle to land at the target landing location.

Abstract: The present disclosure provides a display substrate and a display device. The display substrate has a display area, an edge area arranged on at least one side of the display area, and a transition area arranged between the display area and the edge area, the display substrate includes: a base substrate, a plurality of sub-pixels and a redundant line located on the base substrate, the plurality of sub-pixel being arranged in an array in the display area, the redundant line extending along a column direction of the sub-pixels and passing through the transition area; each sub-pixel includes: a pixel driving circuit; the pixel driving circuit includes a storage capacitor; at least a part of second electrodes of storage capacitors extend from the display area to the transition area and are electrically connected with the redundant line.

Abstract: Embodiments of this application provide methods and apparatuses for compressing and decompressing a three-dimensional (3D) map, to reduce a data volume of a 3D map. The method for compressing a 3D map includes: obtaining a 3D map descriptor, where the 3D map descriptor corresponds to at least one 3D map point of the 3D map; performing binarization on a relationship between the 3D map descriptor and at least one preset threshold vector to obtain binary data; and performing quantization on a difference between the 3D map descriptor and the at least one preset threshold vector to obtain quantized data.

Abstract: A method for assessing wind loads on trees based on point cloud models. This is achieved by performing semantic segmentation on images captured by unmanned aerial vehicles (UAVs), extracting images of the tree crowns for three-dimensional reconstruction, generating point cloud models, extracting point cloud data for both the crowns and trunks, and ultimately producing three-dimensional point cloud models for the target trees. Calculate the wind load impact area of tree crowns using the Alpha Shape algorithm. Combining wind speed, wind direction and tree geometric characteristics, simulate wind load distribution under varying wind direction and speed conditions using ANSYS Fluent software, and compute wind load results under applied wind loads. Finally, utilizing finite element analysis methods in conjunction with wind load data, structural stress analysis of trees is conducted to evaluate their fatigue lifespan and failure risk under wind loads.

Abstract: A laser perception-based method for spatial positioning of an agricultural robot: erecting a laser radar with a ranging function in a positioning space, setting a three-dimensional coordinate system, and conducting scanning using the laser radar to obtain point cloud data of an object in the positioning space, where the point cloud data include an azimuth and a distance with respect to the laser radar; installing a laser receiver on the agricultural robot, receiving a laser radar signal using the laser receiver during movement, when a laser beam emitted by the laser radar irradiates the laser receiver, outputting laser signal data and elevation data from the laser receiver; conducting time-event matching on the laser signal data obtained by the laser receiver and the point cloud data scanned by the laser radar within each scanning period of the laser radar to obtain three-dimensional coordinates of a central position of the laser receiver.

Abstract: Provided are a UV adhesion-reducing adhesive for a polyolefin (PO) protective film for wafer dicing, and a preparation method thereof. The UV adhesion-reducing adhesive is prepared by raw materials including a component A and a component B, where the component A includes, in percentage by mass, 97-99.5% of an acrylate polymer, with a balance being a photoinitiator; the component B includes a curing agent; and the acrylate polymer is an acrylate polymer containing an unsaturated branched chain.

Abstract: A supramolecular hydrogel film for reversible adhesion of frozen food, a production method, and an application are provided. The production method includes mixing the arabinoxylan solution with 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and N-hydroxysuccinimide, and performing an ice bath reaction to obtain the carboxylated arabinoxylan solution; adding dopamine hydrochloride, performing a stirring, dialysis and freeze-drying to obtain the arabinoxylan-dopamine graft; adding acrylic acid and metal ions to the ethanol aqueous solution, mixing with the arabinoxylan-dopamine graft, and performing a stirring, and then mixing with N,N?-methylenebisacrylamide and ammonium persulfate to obtain the supramolecular hydrogel film. The supramolecular hydrogel film has the characteristics of light-controlled reversible adhesion, high mechanical strength, high gas barrier properties and degradability, and is suitable for various frozen foods.

Abstract: A pixel circuit, a pixel driving method, a display substrate, and a display device are provided. The pixel circuit includes a driving circuit, a first reset circuit, a first node control circuit, a first light-emitting control circuit and a light-emitting element. The first reset circuit writes a first initial voltage to a first electrode of the light-emitting element under control of a potential of the first node. The first node control circuit controls the potential of the first node according to a data voltage and a threshold voltage of the driving transistor included in the driving circuit. The first light-emitting control circuit controls connection between a second end of the driving circuit and the first electrode of the light-emitting element under control of a light-emitting control signal. The driving circuit is configured to generate a driving current.

Abstract: An indoor intelligent pile-supported embankment grouting simulation device includes a control system in signal connection with a slurry preparation system and a grouting system, and realizing efficient connection and intelligent management of each equipment in the slurry preparation and grouting systems. A cement silo of the slurry preparation system is loaded with a powdered cementitious material, which is stirred with water and pumped into the grouting system. A pile body, a soft soil foundation, embankment filled soil, and a monitoring element of the grouting system are located in the model tank. Multiple pile bodies are uniformly arranged in the model tank, the embankment filled soil is arranged on the top of the pile body, a soft soil foundation is filled between adjacent pile bodies, the bottom of the grouting pipeline is arranged in the soft soil foundation, and the monitoring element is arranged in the embankment filled soil.

Abstract: A method and an apparatus are disclosed for retrieving a 3D map by obtaining binary data of a plurality of 3D map descriptors, obtaining binary data of a retrieval descriptor, and performing retrieval in the binary data of the plurality of 3D map descriptors based on binary data of the retrieval descriptor, to obtain at least one target 3D map descriptor. The plurality of 3D map descriptors correspond to at least one 3D map point of the 3D map. The retrieval descriptor is a feature that corresponds to a real environment and that is extracted from visual information collected by a sensor of an electronic device. A length of binary data of each of the plurality of 3D map descriptors is different from a length of the binary data of the retrieval descriptor.

Abstract: An area selection-based document object model element inspector is described. A dragging input that defines a selection area of a digital content document having a plurality of elements is received via an area selection-based inspector tool. A set of elements of the plurality of elements that is positioned within the selection area is selected. Details of the selected set of elements are broadcast for display.

Abstract: The invention discloses a biaxial test device, comprising: a bracket, a container, a sample setting assembly and a press, etc. Before use, the sample is installed between two limit plates. On the basis of applying confining pressure, the press is started, and the pressure rod moves vertically downward and applies a vertical downward load to the sample. When the sample is subjected to the vertical downward load, axial compression and radial deformation will occur. At this time, the radial deformation of the sample on both sides of the limit plates is limited, and expansion occurs on both sides without the limit plates. Subsequently, under the joint action of the confining pressure and the limit plates, the sample undergoes plane strain. Since the container and the limit plates are both in a transparent state, the side section state of the sample when plane strain occurs can be well observed.

Abstract: A display panel has a display region and a bezel region located on a periphery of the display region, and the display region includes a first region and a second region. The display panel includes a plurality of pixel driving circuits located in the first region and a plurality of pixel driving circuits located in the second region. A density of the pixel driving circuits in the first region is less than a density of the pixel driving circuits in the second region.

Abstract: The invention discloses a biaxial test device, comprising: a bracket, a container, a sample setting assembly and a press, etc. Before use, the sample is installed between two limit plates. On the basis of applying confining pressure, the press is started, and the pressure rod moves vertically downward and applies a vertical downward load to the sample. When the sample is subjected to the vertical downward load, axial compression and radial deformation will occur. At this time, the radial deformation of the sample on both sides of the limit plates is limited, and expansion occurs on both sides without the limit plates. Subsequently, under the joint action of the confining pressure and the limit plates, the sample undergoes plane strain. Since the container and the limit plates are both in a transparent state, the side section state of the sample when plane strain occurs can be well observed.

Abstract: A display panel has a display region and a bezel region located on a periphery of the display region, and the display region includes a first region and a second region. The display panel includes a plurality of pixel driving circuits located in the first region and a plurality of pixel driving circuits located in the second region. A density of the pixel driving circuits in the first region is less than a density of the pixel driving circuits in the second region.

Abstract: The present invention provides a kit for early screening of hepatocellular carcinoma, comprising a gene marker detection reagent and a protein marker detection reagent. The invention also provides a preparation method and application of the kit. The kit comprising specific gene markers and protein markers of the present invention has been demonstrated to be effective in achieving early screening of HCC in community populations, particularly in prospective studies.

Abstract: Provided herein are materials and methods for producing diploid, fertile, uniform, and vigorous hybrid potato. Also provided are methods of using advanced breeding methods, such as genome design, to generate potato inbred lines with high homozygosity which enables the exploitation of heterosis in this tuber crop and transforms potato breeding from a slow, non-accumulative mode into a fast-iterative one.

Abstract: A display panel has a display region and a bezel region located on a periphery of the display region, and the display region includes a first region and a second region. The display panel includes a plurality of pixel driving circuits located in the first region and a plurality of pixel driving circuits located in the second region. A density of the pixel driving circuits in the first region is less than a density of the pixel driving circuits in the second region.

Abstract: Disclosed are a device and method for detecting and identifying shallow-stratum foreign objects based on distributed acoustic sensing. The device includes a vibrating sensitivity-enhanced fiber optic cable, a distributed acoustic sensing demodulator, a vibrator system, a vibration data processing unit, a velocity structure inversion unit and an AI-aided locating and identification unit. The distributed acoustic sensing demodulator transmits vibration signals to the vibration data processing unit for preprocessing to obtain waveform signals; the velocity structure inversion unit performs inversion to obtain the shallow-stratum underground velocity structure; positions of shallow-stratum foreign objects are identified through the underground velocity structure and abnormal waveforms; and the types of shallow-stratum foreign objects are identified.