Abstract: The invention discloses a shear-resistant, high-drag-reducing, medium-viscosity slickwater drag reducing agent and a preparation method therefor. The drag reducing agent is polymerized from acrylamide, a sulfonate ion-containing hydrophobic monomer, a hydrophobic unit microblock regulator, a molecular weight modifier, and a composite initiator.

Abstract: The invention discloses a shear-resistant, high-drag-reducing, high-viscosity slickwater drag reducing agent and a preparation method therefor. The drag reducing agent is polymerized from acrylamide, sodium acrylate, a sulfonate ion-containing hydrophobic monomer, a hydrophobic unit microblock regulator, a molecular weight modifier, and a composite initiator.

Abstract: A vehicle control method includes: determining a target yaw rate of a vehicle when the vehicle meets a rear wheel turning control condition; acquiring a first yaw rate of the vehicle when a front wheel of the vehicle turns at a front-wheel maximum turning angle and a rear wheel of the vehicle turns at a rear-wheel maximum turning angle in a turning direction opposite to the front wheel, and a second yaw rate of the vehicle when the front wheel turns at the front-wheel maximum turning angle and the rear wheel does not turn; determining a magnitude relationship between the first yaw rate and the target yaw rate, and a magnitude relationship between the second yaw rate and the target yaw rate, respectively; and controlling the rear wheel of the vehicle according to whether the magnitude relationships meet a preset control condition.

Abstract: The present application relates to a slurry quality detection system, including: an ultrasonic probe unit, including at least an annular outer probe capable of being sleeved on a slurry conveying pipe and/or an in-pipe probe body assembled in the slurry conveying pipe, and a detection control processor configured with ultrasonic probe array elements to perform ultrasonic circumferential scanning on slurry in the slurry conveying pipe, detecting a quality state of the slurry based on the slurry ultrasonic transmission circumferential scanning information and the slurry ultrasonic reflection circumferential scanning information when the slurry ultrasonic transmission circumferential scanning information and the slurry ultrasonic reflection circumferential scanning information are generated at least based on the annular outer probe, and outputting the quality state of the slurry.

Abstract: A computer-implemented method for classifying a whole-slide image (WSI). The method includes: extracting a plurality of instances from a WSI; determining an Instance Importance Score (IIS) for each of the plurality of instances, wherein the IIS is determined based on Shapley Value scoring, and wherein the Shapley Value scoring is based on a contribution of each of the plurality of instances; assigning each of the plurality of instances to one of a plurality of pseudo bags based on the determined IIS; and inputting each of the plurality of instances that are assigned to one of the plurality of pseudo bags to a multiple-instance learning (MIL) classifier.

Abstract: A method for detecting obstacles around a vehicle includes acquiring driving information of the vehicle; acquiring the target position information of a lane line on either side of the vehicle according to the driving information of the vehicle; acquiring an alarm area corresponding to the lane line on either side according to the target position information of the lane line on either side; and judging whether an obstacle exists in the alarm area by performing an obstacle detection in the alarm area. An electronic device and a non-transitory computer readable storage medium are also provided.

Abstract: An ultra-high-speed fully automatic precision spectral analysis system for rare earth metals and its working method is disclosed. The system includes a central control server, a precision numerical control rotary table communicatively connected with the central control server, a sample loading-clamping device, an automatic weighing device, an automatic ranging device, an analyzing surface machining device, a rare-earth spark emission spectrometer, and an automatic marking device; the sample loading-clamping device is arranged to fix a test sample of a rare earth metal, the automatic weighing device is arranged to weigh the test sample in real time, and the automatic ranging device, the analyzing surface machining device, the rare-earth spark emission spectrometer, and the automatic marking device are set up around the precision numerical control rotary table to perform the corresponding work processes respectively.

Abstract: A vehicle control method, vehicle and non-transitory computer readable storage medium that enables a current transmission ratio of a vehicle to be decreased prior to a driver turning a steering wheel so that a larger steering angle of a wheel can be obtained when the driver turns the steering wheel at a smaller angle in emergency driving situations.

Abstract: The present invention discloses a hybrid-equivalence-based power electronics system partition computing method, and relates to the field of power electronics simulation. In the power electronics system partition computing method, by separating series nodes and parallel nodes from internal nodes, converting the series nodes into an impedance form, and converting the parallel nodes into an admittance form, hybrid equivalent conversion of sub-partitions is implemented. By projecting hybrid equivalent matrices and hybrid excitation matrices of the sub-partitions onto a global coupling coordinate system, there is linear additivity between the hybrid equivalent matrices of the sub-partitions, and a series coupling current and a parallel coupling voltage of a system are efficiently solved, thereby implementing parallel partition decoupling computing of the power electronics system.

Abstract: A vehicle control method includes: determining a target yaw rate of a vehicle when the vehicle meets a rear wheel turning control condition; acquiring a first yaw rate of the vehicle when a front wheel of the vehicle turns at a front-wheel maximum turning angle and a rear wheel of the vehicle turns at a rear-wheel maximum turning angle in a turning direction opposite to the front wheel, and a second yaw rate of the vehicle when the front wheel turns at the front-wheel maximum turning angle and the rear wheel does not turn; determining a magnitude relationship between the first yaw rate and the target yaw rate, and a magnitude relationship between the second yaw rate and the target yaw rate, respectively; and controlling the rear wheel of the vehicle according to whether the magnitude relationships meet a preset control condition.

Abstract: A method is provided, including following operations: receiving, by a static voltage drop (SIR) prediction circuitry, floorplan data of a floorplan layout of a semiconductor device; generating a first SIR result by a machine learning model based on the floorplan data; generating a first similarity value based on a comparison of the floorplan data with a plurality of training data; generating a second SIR result based on the first SIR result and a first compensation value, corresponding to the first similarity value, in a mapping table; and generating a bump assignment data to update the floorplan data based on a comparison between the second SIR result with a plurality of predetermined SIR values.

Abstract: A system included and a computer-implemented method performed in an autonomous-driving vehicle are described. The system performs: receive a request to meet a person at a location; drive the vehicle to the location; identify the person at the location; and providing an instruction for the person to interact with the vehicle.

Abstract: An ultra-high-speed fully automatic precision spectral analysis system for rare earth metals and its working method is disclosed. The system includes a central control server, a precision numerical control rotary table communicatively connected with the central control server, a sample loading-clamping device, an automatic weighing device, an automatic ranging device, an analyzing surface machining device, a rare-earth spark emission spectrometer, and an automatic marking device; the sample loading-clamping device is arranged to fix a test sample of a rare earth metal, the automatic weighing device is arranged to weigh the test sample in real time, and the automatic ranging device, the analyzing surface machining device, the rare-earth spark emission spectrometer, and the automatic marking device are set up around the precision numerical control rotary table to perform the corresponding work processes respectively.

Abstract: A method for detecting obstacles around a vehicle includes acquiring driving information of the vehicle; acquiring the target position information of a lane line on either side of the vehicle according to the driving information of the vehicle; acquiring an alarm area corresponding to the lane line on either side according to the target position information of the lane line on either side; and judging whether an obstacle exists in the alarm area by performing an obstacle detection in the alarm area. An electronic device and a non-transitory computer readable storage medium are also provided.

Abstract: A vehicle control method, vehicle and non-transitory computer readable storage medium that enables a current transmission ratio of a vehicle to be decreased prior to a driver turning a steering wheel so that a larger steering angle of a wheel can be obtained when the driver turns the steering wheel at a smaller angle in emergency driving situations.

Abstract: Provided herein is a system and method for heat exchange of a vehicle. The system comprises an enclosure disposed on the vehicle. The enclosure comprises a vent at a base of the enclosure. The enclosure houses one or more sensors. The enclosure comprises a fan disposed at a base of the enclosure. The heat exchange system comprises an deflector disposed on the vehicle outside the enclosure and configured to direct an airflow into the vent of the enclosure. The heat exchange system comprises a motor configured to: generate electricity from the airflow and selectively supply electricity to operate the fan. The heat exchange system comprises a controller configured to adjust the deflector and regulate an amount of electricity supplied from the motor to the fan.

Abstract: A sensor enclosure comprises a cover and a structure. The structure can be encased by the cover. The structure comprises a frame, a ring, and one or more anchoring posts. The frame can be configured to mount one or more sensors. The ring, disposed peripherally to the frame, can be operatively coupled to the cover. The ring can include a drainage ring plate that drains rainwater accumulated on the cover away from the sensor enclosure. The one or more anchoring posts, disposed underneath the frame and the ring, can be used to anchor the sensor enclosure to a vehicle.

Abstract: Provided herein is a system and method for heat exchange of a vehicle. The system comprises an enclosure disposed on the vehicle. The enclosure comprises a fan disposed at a base of the enclosure, one or more sensors within the enclosure, and a cover on an exterior of the enclosure. The cover comprises a hole pattern to selectively permit an airflow to enter the enclosure. A deflector is disposed on the vehicle outside the enclosure and configured to direct an airflow through the hole pattern.

Abstract: A sensor enclosure comprises a cover and a structure. The structure can be encased by the cover. The structure comprises a frame, a ring, and one or more anchoring posts. The frame can be configured to mount one or more sensors. The ring, disposed peripherally to the frame, can be operatively coupled to the cover. The ring can include a drainage ring plate that drains rainwater accumulated on the cover away from the sensor enclosure. The one or more anchoring posts, disposed underneath the frame and the ring, can be used to anchor the sensor enclosure to a vehicle.