Abstract: A method and an apparatus for extracting a feature representation, a device, a medium, and a program product are provided and relate to the field of voice analysis technologies. The method includes: obtaining sample audio; extracting a sample time-frequency feature representation corresponding to the sample audio; performing frequency band segmentation on the sample time-frequency feature representation from a frequency domain dimension, to obtain time-frequency sub-feature representations respectively corresponding to at least two frequency bands; and performing inter-frequency band relationship analysis on the time-frequency sub-feature representations respectively corresponding to the at least two frequency bands from the frequency domain dimension, and obtaining an application time-frequency feature representation based on an inter-frequency band relationship analysis result.

Abstract: The present disclosure relates in some aspects to methods and compositions for in situ analysis involving catalytic de-crosslinking of biological samples.

Abstract: The provided is an apparatus and a method for measuring irregularity of a permanent magnet track. The apparatus includes: a superconducting levitator; a Hall sensor assembly is arranged on the superconducting levitator, one end of the Hall sensor assembly extends toward the permanent magnet track to form a positioning end, a plurality of Hall sensors uniformly arranged at the same interval distance along a width direction of the permanent magnet track are arranged on the positioning end, and the plurality of Hall sensors and a bottom of a superconductor in the superconducting levitator are all positioned on the same horizontal plane; an acceleration detection apparatus is arranged on the superconducting levitator, the acceleration detection apparatus is arranged along a length direction of the permanent magnet track, and one end of the acceleration detection apparatus extends toward the permanent magnet track to form a measuring end.

Abstract: A vehicular radar sensing system includes a radar sensor that includes a radiation slot sheet, a wave port sheet, and a waveguide sheet sandwiched between the radiation slot sheet and the wave port sheet. The sheets are joined together. The radiation slot sheet includes at least one transmitter that transmits radio signals and at least one receiver that receives radio signals. The waveguide sheet guides the transmitted radio signals from the radiation slot sheet to the wave port sheet and guides reflected radio signals from the wave port sheet to the radiation slot sheet. The transmitted radio signals are provided to the environment via at least one wave port of the wave point sheet. The reflected radio signals are received from the environment at the at least one wave port.

Abstract: The present disclosure generally relates to methods and compositions for in situ analysis or detection of analytes in a biological sample. More specifically, the present disclosure relates to methods for reducing autofluorescence in tissue samples, methods for analyzing tissue samples, and compounds for use in the same. The methods and compounds of the present disclosure may be especially suitable for analytical methods employing fluorescence in situ hybridization techniques over multiple cycles of imaging.

Abstract: A defect detection method includes obtaining a first screen image and a second screen image of a screen module, in response to determining a defect area in the first screen image, determining an image feature correlation between the first screen image and the second screen image, and determining a defect detection result of the screen module based on the image feature correlation. The first screen image is an image displayed by a display screen collected when the display screen of the screen module is in a first test state. The second screen image is an image displayed by the display screen collected when the display screen is in a second test state. The defect area indicates that the screen module has a display defect.

Abstract: An image sensor includes a pixel circuit array, where the pixel circuit array includes a plurality of pixel cluster circuits. Each of the pixel cluster circuits includes one white pixel circuit and at least two color pixel circuits, and the at least two color pixel circuits are disposed around the white pixel circuit. The pixel circuit array includes at least two pixel circuit rows and at least two pixel circuit columns. The at least two pixel circuit rows share one control signal line, and the at least two pixel circuit columns share one output signal line, where the pixel circuit row includes the white pixel circuit or the color pixel circuit. The pixel circuit column includes the white pixel circuit or the color pixel circuit; and a pixel signal processing module, where the pixel signal processing module is connected to the output signal line.

Abstract: A particulate matter detection device takes holographic images of flowing particulate matter concentrated by a virtual impactor, which selectively slows down and guides larger particles to fly through an imaging window. The flowing particles are illuminated by a pulsed laser diode, casting their inline holograms on a CMOS image sensor in a lens-free mobile imaging device. The illumination contains three short pulses with a negligible shift of the flowing particle within one pulse and triplicate holograms of the same particle are recorded at a single frame revealing different perspectives of each particle. A deep neural network classifies the particles based on the acquired holographic images. The device was tested using different types of pollen and achieved a blind classification accuracy of 92.91%. This mobile and cost-effective device weighs ˜700 g and can be used for label-free sensing and quantification of various bio-aerosols over extended periods.

Abstract: The present disclosure relates to compositions and methods for reversible fixation of biological samples using fixation reagents that form bis-carbamate crosslinks between amine-bearing moieties in biomolecules.

Abstract: A method, device and system of monitoring traffic and road conditions with seismic data. Specifically, a method for monitoring traffic flow with seismic data may include: obtaining, from seismic recording devices, the seismic data; obtaining a seismic data fluctuation graph based on the seismic data, wherein the seismic data fluctuation graph includes a plurality of seismic data fluctuation curves for each of the seismic recording devices; and monitoring the traffic flow based on the seismic data fluctuation graph.

Abstract: A system may be configured to receive and process various signals to generate a natural language description of a user's environment, called situational context data. The signals may include sensor data, device status, user activity, user input, and/or inferences made using such data. The situational context data may express a user-centric description of the user's environment; for example: “User is taking a walk in the park on a sunny afternoon” or “activity: driving location: highway”, etc. The system may send the situational context data to various system components that may, for example, process speech, select applications/skills for handling user inputs, and/or that implement those applications/skills. The applications/skills may use the situational context data to provide recommendations, generate responses, and/or perform actions that are more relevant to the user's current environment.

Abstract: A method may include obtaining seismic data regarding a geological region of interest. The seismic data may correspond to a seismic survey that is divided into various bins in a predetermined bin grid. The method may further include determining a first multiblock bin within the seismic survey. The first multiblock bin may correspond to a source bin and a receiver bin among the bins. The method may further include determining traveltime table data using the seismic data and various multiblock bins that include the first multiblock bin. The method further includes determining migrated data using the seismic data, the traveltime table data, a velocity model, a migration function, and various parallel processors. The method further includes generating a seismic image of the geological region of interest using the migrated data.

Abstract: When a to-be-decoded bitstream of a coding unit in an image bitstream is decoded, or a to-be-encoded coding unit in a current frame is encoded, three factors are considered: image content of the coding unit, a number of lossy bits, and a buffer fullness of a bitstream buffer, and a target number of bits is dynamically set. The decoder decodes the bitstream of the coding unit based on the quantization parameter determined based on the target number of bits.

Abstract: A method includes: performing picture padding on a to-be-encoded picture to obtain a padded picture; then, obtaining a coding unit based on the padded picture; next, determining coding information of the coding unit based on full padding information of the coding unit; and afterwards, encoding the coding unit based on the coding information to generate a bitstream. The full padding information indicates whether all samples in the coding unit are picture padding samples, and the coding information includes at least one of a number of padding bits or a coding length.

Abstract: The present disclosure relates in some aspects to methods and compositions for in situ analysis involving catalytic de-crosslinking of biological samples.

Abstract: Methods and kits for sample preparation are provided, wherein a sample comprising at least one cell or tissue is contacted sequentially with a hydrophobic crosslinker, and then a hydrophilic crosslinker. The method prevents cell and tissue analytes from diffusing out of the at least one cell or tissue, such that the cell and tissue analytes can be analyzed and/or imaged.

Abstract: A decoding method includes receiving a bitstream; parsing a block vector (BV) of a current subblock from the bitstream, where a prediction mode of a coding unit (CU) of the current subblock is an intra block copy (IBC) mode; determining, for the current subblock based on the BV, whether to use a first intra prediction mode to replace the IBC mode; performing an intra prediction on the current subblock to obtain a predicted value of the current subblock when the first intra prediction mode is to be used to replace the IBC mode; performing an IBC prediction on the current subblock based on the BV to obtain the predicted value when the first intra prediction mode is not to be used to replace the IBC mode; and reconstructing the current subblock based on the predicted value to obtain a reconstructed block of the current subblock.

Abstract: A method comprises obtaining a bit depth of a current picture; obtaining a quantization parameter (QP) of a current coding unit (CU), where the current CU belongs to the current picture; obtaining a picture complexity level of the current CU; obtaining a prediction residual value of a current point, where the current point is located in a first row of the current CU, a prediction value of the current point is a reconstruction value of a reference point, and the reference point is located on an upper side of the current point; and obtaining a QP of the current point based on the bit depth of the current picture, the QP of the current CU, the picture complexity level of the current CU, and the prediction residual value of the current point.

Abstract: A decoding method includes determining, based on a preset mode indication information, whether to use a difference prediction mode to replace an intra prediction mode corresponding to a coding unit (CU). When the difference prediction mode is to be used, the method further includes performing difference prediction on the current subblock, to obtain a predicted value. Otherwise, the method further includes performing intra prediction based on the intra prediction mode corresponding to the CU, to obtain a predicted value.

Abstract: An SCR system includes a box body, a urea nozzle and a mixer. The mixer is arranged inside the box body, and is cylindrical, and the first end of the mixer faces the urea nozzle. The mixer comprises a check ring, a swirl tube and a perforated pipe which are connected in sequence. The check ring is arranged close to the urea nozzle, and is provided with a plurality of first through holes. Multiple second through holes are formed in the swirl tube, and multiple third through holes are formed in the perforated pipe. The mixer further comprises a retaining ring, an inner ring of the retaining ring is connected to an outer wall of the swirl tube and/or the perforated pipe, and an outer ring of the retaining ring is connected to an inner wall of the box body. Also provided is an engine.