Abstract: A method and an apparatus for vehicle positioning. The method includes: acquiring a distance transformation image of a road marking object in a road image based on the road image of an environment where a vehicle is located at a current time point; acquiring a vector subgraph of the road marking object from a global vector map; and determining a target positioning posture of the vehicle based on the distance transformation image and the vector subgraph.

Abstract: The disclosure provides a photodegradant for carbamazepine, a method and an apparatus for degrading carbamazepine, and relates to the technical filed of degradation of organic pollutants. The photodegradant provided by the disclosure includes a composite solution of a persulfate and a sulfite. In the disclosure, ultraviolet (UV), the persulfate (PS) and the sulfite (S(IV)) are combined to degrade carbamazepine, during which hydrogen sulfate (HSO3?) generated by the hydrolysis of sulfite in water participates in the reaction to produce a large amount of SO4?? and HO?, thus improving the degradation rate and degradation efficiency of carbamazepine. The composite advanced oxidation system, i.e., the ultraviolet/persulfate/sulfite (UV/PS/S(IV)) system, provided by the disclosure has stronger oxidizability than the ultraviolet/persulfate (UV/PS) system and the ultraviolet/sulfite (UV/S(IV)) system, and results in high degradation rate and high degradation efficiency of carbamazepine.

Abstract: The present disclosure discloses a semiconductor component and a method for forming the semiconductor component. The semiconductor component includes a substrate, a III-V layer, a doped III-V layer, a gate contact, a first field plate, and a second field plate. The gate contact has first and second sides away from the doped III-V layer. The first field plate has first and second sides, and the first side is closer to the second side of the gate contact than the second side. The second field plate has first and second sides, and the first side is closer to the second side of the gate contact than the second side. The first field plate is closer to the doped III-V layer than the second field plate and the first side and the second side of the gate contact.

Abstract: A clock determining method includes: when both a second network device and a first network device are synchronous with a reference clock, simulating, by using delay information between the second network device and the first network device and clock frequency information of the second network device, a second virtual clock synchronized with a first virtual clock, where the first virtual clock is used to simulate a clock of the first network device. A clock of the second network device can thus be simulated to perform a subsequent operation by using the simulated clock. For example, the simulated clock may be used to estimate precision time protocol (PTP) message synchronization performance of the second network device. Therefore, the PTP message synchronization performance of the second network device may be pre-determined before a global navigation satellite system (GNSS) fails, to guide network operation and maintenance activities.

Abstract: A high-precision map construction method, apparatus, and electronic device are provided. The method can include: displaying a first color image corresponding to a first track point; according to a first color sub-image and a depth image corresponding to the first track point, obtaining point cloud data corresponding to the first sub-color image, wherein the first sub-color image is a sub-image corresponding to an element to be added in the first color image, and the element to be added is an element to be added in a high-precision map for display; extracting a bounding box corresponding to the point cloud data; and generating a newly-added three-dimensional element according to the bounding box in the high-precision map.

Abstract: An electrically controlled smart window, which includes two transparent plates arranged oppositely, a power supply component and an in-between light-adjusting area. Hereinto the light-adjusting area is divided into a matrix of light-adjusting units by pixel wall(s), and every units are closely arranged in a grid shape. To the power supply component, an electrode is connected with the pixel wall, and another is localized on the center of light-adjusting unit and did with the transparent plate. Both surface-charged liquid crystal polymer particles and conductive packing fluid are filled into the medium between the two transparent plates. According to the present disclosure, cholesteric liquid crystal polymer microparticles with specific reflection band and surface charges are used as basic reflectors, thereby achieving the significant advantages of being easy to manufacture, low cost, and stable performance, without causing interference to electromagnetic signals.

Abstract: A radar monolithic microwave integrated circuit (MMIC) includes a first transmission channel configured to output a first continuous-wave transmit signal based on a local oscillator signal having a first frequency; a first phase shifter provided on the first transmission channel and configured to apply a first phase setting to the first continuous-wave transmit signal to generate a first transmit signal having the first frequency; a first transmit monitoring signal path configured to couple out a portion of the first transmit signal from the first transmission channel as a first transmit monitoring signal; a frequency multiplier configured to receive a test signal and convert it into a multiplied test signal having a second frequency, where the first and the second frequencies are separated by a frequency offset; and a down-conversion mixer configured to mix the multiplied test signal and the first transmit monitoring signal to generate a first mixer output signal.

Abstract: An intelligent identification and warning method for an uncertain object of a production line in a digital twin environment, includes: establishing a model library for uncertain physical objects from a non-production line system; adding attribute data to the uncertain physical objects from the non-production line system; importing an established model library and added attribute data for the uncertain physical objects from the non-production line system into a model library of an existing DT production line system; performing auto-detection on an uncertain physical object entering a production line system; performing auto-detection on an actual size of the uncertain physical object entering the production line system; warning a danger for an unsafe object by means of voice prompting, system alarming and information pushing; matching a corresponding three-dimensional (3D) model in the established model library for a safe object; and loading a matched 3D model to the DT production line system.

Abstract: A plasma-generating nozzle and a plasma device including the plasma-generating nozzle are provided. The plasma-generating nozzle includes a plasma-generating channel, a cooling channel at least partially surrounding the plasma-generating channel, and a pair of electrodes partially disposed in the plasma-generating channel for generating plasma. The plasma device includes a housing enclosing a plasma treatment space and a component space, and the plasma-generating nozzle removable disposed in the plasma treatment space.

Abstract: A method, a device, and a system, the method including determining, by a management device, a first transmission path that is in a network system and that is used to transmit a clock packet of a target clock source, sending, by the management device, configuration information for the first transmission path to a plurality of network devices on the first transmission path, receiving, by the management device, information that is sent by an endpoint network device on the first transmission path and that is used to determine a time difference, and sending, by the management device, a corresponding clock compensation value to at least one network device on the first transmission path based on the information that is used to determine the time difference.

Abstract: A three-dimensional displacement compensation method is provided. The method includes an obtaining step, a transforming step, a first determining step, a first calculating step and a compensating step. The obtaining step includes obtaining a current image of a measured element captured by a microscopic thermoreflectance thermography device. The transforming step includes two sub-steps. One sub-step uses Fourier transform to calculate a reference image to obtain a first result, and the other sub-step uses Fourier transform to calculate the current image to obtain a second result. The first determining step includes determining a peak point coordinate and a fitting diameter of a point spread function of an optical system of the device. The first calculating step includes calculating a three-dimensional displacement of the position to be compensated relative to the reference position. The compensating step compensates the position to be compensated.

Abstract: Systems and methods are provided for generating topologically consistent meshes across various subjects, objects, and/or various facial expressions using a volumetric representation. In one example, a progressive mesh generation network is configured to embed the topological structure of a subject or an object in a feature volume sampled from a geometry-aware local features. Further, a coarse-to-fine iterative architecture facilitates dense and accurate facial mesh predictions using a consistent mesh topology. In another example, one or more high-quality asset maps may be generated from a final base mesh.

Abstract: The disclosure discloses a method for analyzing educational big data on the basis of maps. The method includes acquiring educational resource data and storing the educational resource data into databases according to certain data structures; constructing theme map layers for each analysis theme, classifying and indexing data according to the analysis themes, and superimposing the theme map layers onto base maps to form data maps; analyzing data of the theme map layers according to the analysis themes and acquiring theme analysis results; extracting the data of the multiple theme map layers in target regions, fusing the data and acquiring region analysis results; acquiring learning preference of users; combining the learning preference of the users according to content of user requests and searching the region analysis results in response to the user requests. The disclosure further discloses a system for analyzing the educational big data on the basis of the maps.

Abstract: A system is presented in accordance with aspects of the present disclosure. In various embodiments, the system includes a light source configured to emit light, an emitting lens positioned to obtain the emitted light and configured to produce a shaped beam, an optical element positioned to obtain the shaped beam and redirect the shaped beam toward a near field object to produce scattered light from the near field object, and to obtain and redirect at least a portion of the scattered light, and a collection lens configured to focus the at least the portion of the scattered light on a light detector.

Abstract: Systems and methods are presented for identifying individuals through facial recognition, voice recognition, or the like, recalling past recorded conversations with the identified individuals, and recording and inventorying conversations with the individuals with mobile devices. In some embodiments, a method is presented. The method may include identifying, at a device, an individual through facial recognition, voice recognition, or a unique RFID. The method may also include recording a conversation with the identified individual, and recalling past relevant recorded conversations based on the identification of the individual, and transmitting the recording of the conversation to a display system configured to display the recording of the event.

Abstract: Provided a vitrification freezing carrier includes a tube body of a hollow structure with an opened end provided with a matching part, a tube cap provided with a covering part of a hollow structure with one end closed and matching the matching part and provided with an extending part connected to the covering part, a carrying rod arranged on a side, facing an interior of the tube body, of the covering part and capable of extending into the tube body, and an auxiliary sampling mechanism including a carrier body provided with a locking part configured to be matched with the covering part to drive the covering part to move and an elastic reset assembly arranged on the carrier body and including a driving part and an elastic part driven by the driving part and capable of being selectively connected to the extending part in a matched manner.

Abstract: The present disclosure relates to a memory device that includes a substrate and source and drain regions formed in the substrate. The memory device includes a gate dielectric formed on the substrate and between the source and drain regions. The memory device also includes a gate structure formed on the gate dielectric and the gate structure has a planar top surface. The memory device further includes a multi-spacer structure that includes first, second, and third spacers. The first spacer is formed on a sidewall of the gate structure and a top surface of one of the source and drain regions. The second spacer is formed on a sidewall of the first spacer and the second spacer has a dielectric constant greater than a dielectric constant of the first spacer. The third spacer is formed on a sidewall of the second spacer and a horizontal surface of the first spacer.

Abstract: A gas chromatography device for peak focusing of one or more target analytes is provided that include a chromatographic column with an inlet and an outlet. A stationary phase is deposited inside the chromatographic column and has a positive thickness gradient. The stationary phase extends from the inlet to the outlet and has a first thickness at the inlet of the chromatographic column and a second thickness at the outlet of the chromatographic column. The second thickness is at least about 10% greater than the first thickness. Methods of peak focusing in a gas chromatography device, method of verifying peak focusing in a gas chromatography device and creating a gas chromatography device having a chromatographic column with a positive thickness gradient are also provided.

Abstract: An audio data transmission method and apparatus for a wireless earphone, and a storage medium and a terminal are provided. A play mode adopted by the wireless earphone includes a first play mode and a second play mode, and the method includes: determining whether the first play mode currently adopted by the wireless earphone satisfies a transmission bandwidth required by to-be-played audio data at least based on parameter information of the to-be-played audio data; and based on the first play mode not satisfying the transmission bandwidth required by the to-be-played audio data, transmitting the to-be-played audio data through a connection channel corresponding to the second play mode.

Abstract: A method for anti-counterfeit inspection of a QR code of an agricultural product based on a watermark library. The method includes establishing a watermark-containing QR code library; tracing a QR code watermark image; and verifying the QR code watermark image. Watermark-containing QR codes are generated by a QR code generation module and a watermark library, and the watermark-containing QR codes are constructed as the watermark-containing QR code library. The watermark-containing QR code library is used to verify the QR code watermark image, and the QR code watermark image is obtained by tracing the watermark-containing QR codes. In the method for anti-counterfeit inspection of a QR code of an agricultural product based on a watermark library, an image watermark library is designed, so that the embedding of a watermark is no longer single.