Abstract: This application provides a charging system and an electric vehicle. The charging system mainly includes an MCU and a motor. N bridge arms in the MCU and N motor windings in the motor are multiplexed to constitute a voltage conversion circuit. When a power supply voltage is less than a minimum charging voltage of a power battery, the MCU may perform boost conversion on the power supply voltage by using the voltage conversion circuit, and output the power supply voltage obtained after boost conversion to the power battery as a first output voltage, where the first output voltage is not less than the minimum charging voltage. In this application, space occupied by the charging system and costs of the charging system can be reduced while the charging system is used to perform boost conversion on the power supply voltage.

Abstract: A method of processing data may include receiving a stream of first keys associated with first data, receiving a stream of second keys associated with second data, comparing, in parallel, a batch of the first keys and a batch of the second keys, collecting one or more results from the comparing, and gathering one or more results from the collecting. The collecting may include reducing an index matrix and a mask matrix. Gathering one or more results may include storing, in a leftover vector, at least a portion of the one or more results from the collecting. Gathering one or more results further may include combining at least a portion of the leftover vector from a first cycle with at least a portion of the one or more results from the collecting from a second cycle.

Abstract: Methods and apparatuses for transmitting and receiving an uplink signal. The method includes: from a media access control layer, instructing a physical layer by a terminal equipment to transmit a first uplink signal on a first time-frequency resource; in the media access control layer, determining that a second time-frequency resource at least partially overlaps the first time-frequency resource in a time domain or a time-frequency domain; and in the media access control layer, comparing first information related to the first uplink signal and second information related to the second time-frequency resource.

Abstract: An on-board distributed power supply system is coupled to an on-board distributed drive system. The on-board distributed drive system includes at least two power trains, and the on-board distributed power supply system includes at least two low-voltage battery pack groups. Each low-voltage battery pack group of the at least two low-voltage battery pack groups includes at least one low-voltage battery pack. Each low-voltage battery pack of the at least one low-voltage battery pack includes a plurality of battery cells. Each low-voltage battery pack group of the at least two low-voltage battery pack groups is correspondingly electrically connected to at least one of the power trains in the on-board distributed drive system, and is configured to provide electric energy for each power train of the at least two power trains in the on-board distributed drive system.

Abstract: A distributed centralized automatic driving method comprises a sensor processing module, a perception positioning module, a perception target detection module, a decision-making module, a planning module, and a vehicle control module. By clearly defining data domains and a control process, a modular design is performed to implement each functional method, and each module can be deployed to a control unit of the corresponding data domain according to the load of a computing platform. The distributed centralized automatic driving method has different computing requirements for different scenarios. By means of a distributed design, centralized computing is distributed to different computing unit modules, so as to greatly improve the stability, efficiency and parallelism of the method, thereby improving the overall performance of the method.

Abstract: An intelligent control gas suction-type electric propulsion system applicable to multi-flow regimes: an ultra-low orbit rare gas is used as a working medium for attitude orbit control and resistance compensation propulsion, the gas is collected and inputted into an intelligent feedback pressurization system by means of a parabolic gas intake duct, intelligent feedback and pressurization are performed on the gas working medium by a molecular pump and a gas pump and the medium is stored in a working fluid storage tank so as to supply a hybrid thruster system that consists of seven sets of electric thrusters to generate thrust, which may achieve multiple thrust modes, and achieve the purpose of attitude orbit control and resistance compensation.

Abstract: The present disclosure relates to pyrimidine compounds, and more specifically, relates to pyrimidine compounds, preparation methods thereof, and uses thereof in manufacture of medicaments. Provided is a compound represented by Formula (I) or a tautomer, stereoisomer, hydrate, solvate, pharmaceutical acceptable salt, or prodrug of the compound represented by Formula (I). The compound has a significant inhibitory effect on ATX enzyme, exhibits excellent liver metabolism stability, is metabolized more slowly in the human body, and has higher exposure.

Abstract: Disclosed are a series of compounds with a nitrogen-containing spiro structure and an application thereof in the preparation of an RET kinase inhibitor. Specifically, disclosed is a compound as shown in formula (II) or a pharmaceutically acceptable salt thereof.

Abstract: This application discloses a model training method, apparatus, and system, and belongs to the AI field. The method includes: receiving a machine learning model sent by a first analysis device; and performing incremental training on the machine learning model based on a first training sample set, where feature data in the first training sample set is feature data from a local network corresponding to a local analysis device. In this application, a problem that the machine learning model obtained through offline training cannot be effectively adapted to a requirement of the local analysis device is resolved. Embodiments of this application are used to predict a classification result.

Abstract: The present disclose provides a touch control substrate and a display device and relates to the field of touch control technologies. The touch control substrate has a fingerprint recognition area and includes a plurality of touch control electrode units. The touch control electrode unit includes a mesh electrode composed of a plurality of electrode lines, and at least one touch control electrode unit is located in the fingerprint recognition area. The touch control electrode unit in the fingerprint recognition area is divided into a first area and a second area surrounding the first area, and a coverage rate of the plurality of electrode lines in the first area is smaller than a coverage rate of the plurality of electrode lines in the second area.

Abstract: A manufacturing process of a high-strength aluminum alloy wire/strip includes the following steps: A. subjecting an alloy to smelting and spray forming to obtain a high-strength Al—Zn—Mg—Cu aluminum alloy blank; B. subjecting the blank to semi-solid upset forging to form an ingot; C. subjecting the ingot to hot extrusion and then to vacuum annealing to form a coiled material; D. subjecting the coiled material to hot continuous rolling to obtain a wire blank; and E. subjecting the wire blank to solution heat treatment, multiple stretching treatments, annealing, and multiple continuous stretching treatments to obtain the high-strength aluminum alloy wire/strip. The high-strength aluminum alloy wire/strip has the characteristics of fine and compact grains, uniform structure, clear grain boundaries, no precipitates, and no layered structure affecting the stretching performance.

Abstract: The disclosure relates to a method for producing heavy oil by generating solvents in situ in the reservoir, an electric heating device is used to heat up the crude oil in the reservoir near the wellbore to the target temperature. Chemical reaction additives are injected into the heating section to meet the preset reaction conditions for the high temperature thermal cracking and aquathermolysis of crude oil, so as to generate light hydrocarbon components and gases. Under the effect of heat and gravity, the light hydrocarbon components and gases rise to the steam chamber. The light hydrocarbons and some gases that move to the vapor-liquid interface of the steam chamber are dissolved in the crude oil to reduce the viscosity of crude oil and increase the production rate of crude oil.

Abstract: The present disclosure provides a linear motor including: a housing body with a containment space; a vibrator assembly suspended in the containment space by an elastic member for vibrating along a vibration direction; a stator assembly fixedly connected to the housing body and having a magnetic axis along the vibration direction; and two magnets located on both sides of the magnetic axis and spaced from the stator assembly, including a first magnet section and a second magnet section located on both sides of the first magnet section. A magnetic field strength of the first magnet section along the magnetic axis is greater than a magnetic field strength of the second magnet section along the magnetic axis. The configuration of the invention can effectively reduce the static attraction force of the magnetic circuit, and increase the overall rigidity of the linear motor.

Abstract: A non-contact method for detecting and distinguishing a human and an animal based on IR-UWB bio-radar signals includes: step 1, transmitting a radar pulse to a target by a transmitting antenna of an IR-UWB bio-radar; and obtaining, by a receiving antenna of the IR-UWB bio-radar, a radar echo signal E(n,m) generated from the radar pulse reflected on the target; step 2: performing signal preprocessing on the radar echo signal E(n,m) obtained in step 1, to obtain a first energy signal E6(l); step 3: removing a direct wave from E6(l) obtained in step 2 to obtain a second energy signal E7(l), and obtaining a maximum amplitude E7max of E7(l) and a position lmax corresponding to the maximum amplitude in a slow time direction; step 4: calculating a peak-to-background ratio VEtoB of E7(l), calculating an average correlation coefficient rm, and determining a type of the target through a target detection and distinction rule.

Abstract: Disclosed is an oil extraction and gas production method capable of in-situ sand control and removal by downhole hydraulic lift achieved by downhole oil extraction and gas production system and ground oil extraction and gas production system. The downhole systems mainly comprises a double-layer tube, a double-layer tube reducing joint, a double-layer tube packer, a hydrodynamic turbine motor, a sludge screw pump, a soil-sand separator and a negative pressure absorber; the ground system comprises a power fluid pressurizing module and a mix fluid treatment module. The present application lowers the difficulty of pumping and lifting downhole formation fluid; achieves downhole and in-situ sand control and sand discharge, alleviates the blockage and erosion of sand particles on equipments and reduces energy consumption; decreases the production cost and improves the operation efficiency, therefore is suitable for oil extraction and gas production in high sand content wells.

Abstract: A laser system includes a first laser cavity to output a laser light along a first path, a first mirror to receive the laser light from the first laser cavity, and redirect the laser light along a second path that is different than the first path, a second mirror to receive the laser light from the first mirror, and redirect the laser light along a third path that is different than the first path and the second path, a beam splitter located at a first position on the third path, a beam combiner located at a second position on the third path; and a coupling lens assembly, the coupling lens assembly including a lens located at a third position on the third path, wherein the coupling lens assembly moves the lens in x-, y-, and x-directions.

Abstract: An information processing method, an information processing system, an electronic device, and a computer readable storage medium are provided. The information processing method is applied to a server. The method includes: in response to receiving first import operation information performed by a first account on the design application, synchronizing the electronic file generated by the design application to the first work subspace by using the first plug-in; in response to a second account having first permission to access the first work subspace, receiving a first access request from the second account for accessing the electronic file through the first work subspace; and in response to the second account having second permission to access the electronic file, responding to the first access request. The method can allow a plurality of users to collaborate online, and improve the efficiency of collaboration of the plurality of users.

Abstract: The inventions provide microscopes for imaging samples within wells of multi-well plates. Microscopes of the disclosure include a beam homogenizer system that shapes a beam from a light source into a shape specific to the bottom of a well of a multi-well plate. In particular, microscopes of the disclosure can illuminate wells for imaging by passing light through a prism that is beneath the sample. The light enters the prism from the side and as refracted into the well at a steep angle such that the light only illuminates about a bottom ten microns of the well. The beam homogenizer shapes the light from the light source so that, instead of hitting the prism as a spot with an irregular shape, the light enters the prism in a substantially rectangular pattern with homogeneous optical power level over the pattern.

Abstract: The present disclosure relates to a technical field of optical lenses, and discloses a camera optical lens. The camera optical lens includes seven lenses. An order of the seven lenses is sequentially from an object side to an image side, which is shown as follows: a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a negative refractive power, a fourth lens having a positive refractive power, a fifth lens having a negative refractive power, a sixth lens having a positive refractive power, and a seventh lens having a negative refractive power. The camera optical lens provided by the present disclosure has excellent optical characteristics, and further has characteristics of large aperture, wide-angle, and ultra-thin, especially suitable for mobile phone camera lens assemblies and WEB camera lenses, which are composed of camera components having high pixels.

Abstract: The present application belongs to the technical field of audio and video, and relates to a method and device for obtaining a video clip, a server, and a storage medium. The method includes in response to obtaining a clip in live stream video data of a performance live stream room, using audio data from the live stream video data and audio data of an original performer to determine a target timepoint parameter of the live stream video data. The method includes obtaining a target video clip according to a start timepoint and an end timepoint in the target timepoint parameter. The present application is used to capture a more complete video clip.