Abstract: An audio signal classification method includes determining, according to voice activity of a current audio frame, whether to obtain a frequency spectrum fluctuation of the current audio frame and store the frequency spectrum fluctuation in a frequency spectrum fluctuation memory, and updating, according to whether the audio frame is percussive music or activity of a historical audio frame, frequency spectrum fluctuations stored in the frequency spectrum fluctuation memory, and classifying the current audio frame as a speech frame or a music frame according to statistics of a part or all of effective data of the frequency spectrum fluctuations stored in the frequency spectrum fluctuation memory.

Abstract: Electronic paper includes a display panel and a drive component. The display panel may include a plurality of pixels disposed in a display region and a photoelectric conversion transistor disposed in a non-display region. The drive component is electrically connected to the plurality of pixels, and is electrically connected to a current output terminal of the photoelectric conversion transistor.

Abstract: A first node determines, based on a data flow identifier of a data flow and a packet header, a first data packet corresponding to an egress port same as the data flow from the to-be-transmitted data packet; obtains, based on the meta information, a meta information value corresponding to the first data packet; and when determining that the feedback trigger condition is met, sends a second data packet to a second node, where the second data packet is used to enable the second node to reduce a transmission rate of at least one data flow in data flows corresponding to the first data packet, or sends, to a third node, indication information used to reduce a transmission rate of at least one data flow in data flows corresponding to the first data packet.

Abstract: A spray-capillary device is configured to process ultra low-volume samples. The spray-capillary device includes a spray capillary that includes an inlet end and a discharge end. The spray capillary includes a porous section at the discharge end. A downstream connector provides an interface between the porous section of the spray capillary, a conductive fluid, and a high voltage electrical source. The application of voltage to the downstream connector causes electrospray ionization, which can be used to draw ultra law volume samples into the inlet end. A gas injection assembly can be used to increase the pressure on the inlet end of the spray capillary to encourage movement of the sample through the spray capillary. The spray-capillary device is well suited for providing ultra low samples to a mass spectrometer detection device.

Abstract: The invention relates to a wood-based biomimetic artificial muscle and preparation method and application thereof. The biomimetic artificial muscle comprises a wood-based cellulose skeleton, and polyvinyl alcohol and at least one ionic polymer filled in the wood-based cellulose skeleton. The preparation method includes S1: slicing wood, and subjecting the obtained wood slices to ammonia treatment and delignification in sequence; S2: soaking in the solution of citric acid and/or citrate; S3: preparing water solution of an ionic polymer and DMSO water solution of polyvinyl alcohol separately, and mixing to obtain polymer solution; S4: subjecting the treated wood slices to vacuum treatment, filling the polymer solution into the container, releasing vacuum, and pressurizing to infiltrate the polymer into the wood slices until saturation; S5: freezing the wood slices in a refrigerator and thawing; and S6: repeating S5 for 5-10 times, washing the wood slices, and drying.

Abstract: Example communication methods and devices are described to reduce possibility that account information of a contact corresponding to an electronic business card is leaked. One example method includes receiving a first electronic business card sent by a second terminal. The first electronic business card is an electronic business card of a user corresponding to a client of a third terminal or a client of the second terminal. A first identifier used to identify an account of a user corresponding to the first electronic business card is displayed based on the first electronic business card. Displaying the first user account is skipped.

Abstract: Methods, apparatuses, devices, and computer-readable storage media for three-dimensional object detection and intelligent driving are provided.

Abstract: Provided are a method and apparatus for labeling point cloud data, an electronic device, and a computer-readable storage medium. In the embodiments, object recognition is firstly performed on to-be-recognized point cloud data to obtain a bounding box of an object in the to-be-recognized point cloud data; subsequently, to-be-labeled point cloud data is determined according to the bounding box of a recognized object in the to-be-recognized point cloud data; subsequently, a manual annotation box of an object in the to-be-labeled point cloud data is acquired; and finally annotation boxes of objects in the to-be-recognized point cloud data are determined according to the bounding box and the manual annotation box.

Abstract: Methods, systems and apparatuses may provide for technology that determines measured timing data in response to a presentation request from an application, wherein the measured timing data is associated with one or more previous frames and the presentation request is associated with one or more subsequent frames. The technology may also determine scheduling times for the subsequent frame(s) based on the measured timing data, wherein the scheduling times include a simulation time, a rendering time, a driver submission time, a hardware submission time, and a display time. In one example, the technology controls a pacing of the subsequent frame(s) on a display in accordance with the scheduling times.

Abstract: Point cloud data collected by a radar device on a target vehicle can be acquired. Information on an obstacle within a set range from the target vehicle is determined based on the point cloud data. Radar blind zone information of the target vehicle is determined based on beam information of a beam transmitted by the radar device, as well as the information on the obstacle determined. The target vehicle is controlled according to the radar blind zone information of the target vehicle.

Abstract: Methods, devices, and systems for managing performance of a processor having multiple compute units. An effective number of the multiple compute units may be determined to designate as having priority. On a condition that the effective number is nonzero, the effective number of the multiple compute units may each be designated as a priority compute unit. Priority compute units may have access to a shared cache whereas non-priority compute units may not. Workgroups may be preferentially dispatched to priority compute units. Memory access requests from priority compute units may be served ahead of requests from non-priority compute units.

Abstract: A target vehicle control method and apparatus, an electronic device, and a storage medium are provided. The control method includes that: a plurality of frames of point cloud collected by a radar apparatus are acquired during traveling of a target vehicle; obstacle detection is performed on each frame of point cloud, and the current position and confidence of a target obstacle are determined; and the target vehicle is controlled to travel based on the determined current position and confidence of the target obstacle and current position and pose data of the target vehicle.

Abstract: A target detection method is provided, which includes: a plurality of frames of point cloud data obtained through scanning by a radar apparatus and time information of each frame of point cloud data obtained through scanning are acquired; position information of a target to be detected is determined based on each frame of point cloud data; scanning direction angle information when the target to be detected is scanned by the radar apparatus in each frame of point cloud data is determined based on the position information of the target to be detected in each frame of point cloud data; and moving information of the target to be detected is determined according to the position information of the target to be detected, the scanning direction angle information when the target to be detected is scanned by the radar apparatus, and the time information of each frame of point cloud data.

Abstract: The present invention relates to an MDM2 inhabitor, a preparation method therefor, a pharmaceutical composition thereof, and the use thereof specifically, the present invention relates to a compound represented by formula I. The compound has excellent MDM2 inhibitory activities, and can be used for preparing a pharmaceutical composition for treating cancers and other diseases related to MDM2 activities, particularly p53 wild-type cancer.

Abstract: The present disclosure discloses a microphone, comprising: a first substrate, the first substrate having an inner cavity open at one end, wherein the microphone further comprises a vibration diaphragm and at least one cantilever which are provided to the first substrate and suspended above the inner cavity. The cantilever is separated from the vibration diaphragm by a spacing portion, and the vibration diaphragm and the inner cavity of the first substrate define an acoustically sealed cavity; and a detection structure is provided to the vibration diaphragm and the cantilever. The structural design of the cantilever is adopted, so that the space between the vibration diaphragm and the cantilever is open, the airflow can smoothly pass by the cantilever, and further the signal-to-noise ratio of the microphone can be greatly improved.

Abstract: The present disclosure provides vehicle braking and warning method, system and device based on a binocular stereo camera. The vehicle braking and warning method includes: acquiring first target information within a detection range of the binocular stereo camera, second target information within a detection range of a millimeter-wave radar, and current vehicle driving information; acquiring sensing result data about a target obstacle in accordance with the first target information and the second target information in conjunction with a predetermined weight; and outputting a braking instruction and/or a warning instruction in accordance with the sensing result data and the current vehicle driving information so as to enable a vehicle to adjust its driving state in accordance with the instructions.

Abstract: A linear prediction residual energy tilt-based audio signal classification method and apparatus, where the method includes: determining, according to voice activity of a current audio frame, whether to obtain a linear prediction residual energy tilt of a current audio frame of the current audio frame and store a frequency spectrum fluctuation of the current frame in a frequency spectrum fluctuation memory, where the linear prediction residual energy tilt denotes an extent to which an audio signal's linear prediction residual energy changes as a linear prediction order inscreases; updating, according to whether the audio frame is percussive music or activity of a historical audio frame, frequency spectrum fluctuations stored in the frequency spectrum fluctuation memory; and classifying the current audio frame as a speech frame or a music frame according to statistics of some or all of effective data of the frequency spectrum fluctuations stored in the frequency spectrum fluctuation memory.

Abstract: A computer-implemented method includes: determining a target user corresponding to a payment request and a plurality of payment channels corresponding to the payment request; obtaining payment features based on the target user and the plurality of payment channels, in which the payment features include features representing historical characteristics of one or more payments made by the target user using one or more of the plurality of payment channels; determining, based on the payment features, a recommendation score corresponding to each of the plurality of payment channels in accordance with a prediction model; and generating, based on the determined recommendation scores of the plurality of payment channels, a recommendation including at least one of: a selection of at least one of the plurality of payment channels, and a manner of presentation of at least one of the plurality of payment channels.

Abstract: The present disclosure provides a vehicle positioning device for vehicle vision calibration, a positioning adjustment method, and a positioning adjustment system. The vehicle positioning device includes a base, a chassis, a translation mechanism and a rotation mechanism. A to-be-calibrated vehicle is placed onto the chassis, and the chassis is provided with a stopper. The translation mechanism is arranged between the chassis and the base, and configured to drive the chassis to move in an X-axis direction in a three-dimensional coordinate system relative to the base in accordance with a translation control instruction. The rotation mechanism is arranged between the chassis and the base, and configured to drive the chassis to rotate about a Z-axis in the three-dimensional coordinate system relative to the base in accordance with a rotation control instruction.

Abstract: A hydroformylation catalyst, a preparation method thereof and a use thereof. The hydroformylation catalyst including an active component and a carrier carrying the active component, wherein the active component includes a transition metal as a center atom, and a polyhydroxy aromatic ring group bonded to the transition metal; and the transition metal and the polyhydroxy aromatic ring groups are bonded by at least one of metal-hydroxyl coordination bond and at least one of metal-oxygen covalent bond, and the active component has at least one of the metal-hydroxyl coordination bond and at least one of the metal-oxygen covalent bond.