Abstract: Provided are a non-aqueous electrolyte and a preparation method thereof, and a secondary battery and an electric apparatus containing the same. The non-aqueous electrolyte contains a non-aqueous solvent and lithium ions, first cations, and first anions dissolved therein, where the first cation is a metal cation Men+ other than the lithium ion, n representing a chemical valence of the metal cation; the first anion is a difluoroxalate borate anion DFOB?; mass concentration of the first cations in the non-aqueous electrolyte is D1 ppm, and mass concentration of the first anions in the non-aqueous electrolyte is D2 ppm, both based on total mass of the non-aqueous electrolyte; and the non-aqueous electrolyte satisfies that D1 is 0.5 to 870 and that D1/D2 is 0.02 to 2. The non-aqueous electrolyte in this application enables the secondary battery to have good cycling performance, safety performance, and kinetic performance.

Abstract: All example composition may include a plurality of grains including an iron nitride phase. The plurality of grains may have an average wain size between about 10 nm and about 200 nm. An example technique may include treating a composition including a plurality of grains including au iron-based phase to adjust an average grain size of the plurality of grains to between about 20 nm and about 100 ma. The example technique may include nitriding the plurality of grains to form or grow an iron nitride phase.

Abstract: A wafer metrology system having a continuous dynamic sampling scheme configured to optimize a sampling rate for AVI of process wafers in an IC fabrication flow based on acceptable quality levels. For a stable process, the process wafers may be sampled at a lower rate without negatively affecting quality control.

Abstract: A support on the cleaning device includes trays; a water outlet channel is formed on each tray; a height difference is formed between two sides of the water outlet channel, such that when flowing in a direction from high to low, a fluid m the tray and used for cleaning can cross the water outlet channel and is kept from flowing out through the water outlet channel, and when the fluid in the tray flows in a direction from low to high, the fluid can flow out through the water outlet channel. The height difference formed between the two sides of the water outlet channel is used to combine cleaning and scraping of the cleaning device by the tray with discharging of the fluid; the cleaning device is scraped clean by a high end formed by the height difference.

Abstract: A propulsion assembly for an unmanned aerial vehicle (UAV), includes a motor, a propeller seat configured to be driven by the motor and to receive a propeller, and a sensor configured to collect sensing data useful for determining a type of the propeller disposed on the propeller seat and controlling the motor based on the type of the propeller.

Abstract: A method for performing segmenting locking and merging control of encrypted digital assets based on time dimension is provided. The method being mainly provided to achieve segmenting locking and merging control of encrypted digital assets by adding a time attribute to encrypted digital asset. Using the method for performing segmenting locking and merging control of encrypted digital assets based on time dimension of the present invention, through the processing of encrypted digital assets in the time dimension, which not only can use smart contracts or hash locking to realize the automated transfer of encrypted digital assets in the future, and the transferred encrypted digital asset before the set time, also can transfer and transaction; meanwhile, since the segmentation object is based on the assets currently held by the user, therefore the deterministic payment of future value rights also can be ensured, has a wider range of applications.

Abstract: A light-emitting device includes a semiconductor laminate, a first contact electrode, and a second contact electrode. The semiconductor laminate includes a first semiconductor layer, an active layer, and a second semiconductor layer being laminated in a thickness direction. The semiconductor laminate has a first portion having a patterned structure that has a first surface constituted by the first semiconductor layer, a second surface opposite to the first surface and away from the first semiconductor layer, and a side surface interconnecting the first surface and the second surface, and a second portion being a light-emitting area. The first contact electrode is formed on the first portion, electrically connected to the first semiconductor layer and in contact with the first surface, the second surface and the side surface of the patterned structure. The second contact electrode is formed on the second portion and electrically connected to the second semiconductor layer.

Abstract: This application discloses a system architecture for implementing DDS communication based on AUTOSAR, a communication method, and a device, which may be applied to an intelligent agent (for example, an intelligent vehicle, an intelligent connected vehicle, or an autonomous vehicle) in intelligent driving.

Abstract: An imaging method of a head-mounted display and a head-mounted display are disclosed. The method includes, but is not limited to: detecting a wavefront of a beam emitted by the head-mounted display through its optical system; acquiring a position of a visual axis of a human eye; calculating a deviation between the visual axis of the human eye and an optical axis of the optical system; and adjusting a wavefront incident to the human eye according to the deviation, so that a correspondence between the wavefront incident to the human eye and the visual axis is consistent with a correspondence between the wavefront of the beam emitted from the optical system and the optical axis.

Abstract: A digital speckle based online water wall stress monitoring method and device, and the method includes the following steps: arrange an online stress monitoring device on the side of the water wall to be monitored; determine a plurality of monitoring points according to the area of the water wall, and set the motion track of the online stress monitoring device for speckle image acquisition according to the determined monitoring points; acquire the real-time speckle image of each monitoring point in real time after acquiring the initial speckle image of each monitoring point; compare the real-time speckle images with the initial speckle images, and determine whether the stress of the water wall changes according to the comparison results. The invention adopts non-contact digital image technology, and determines the difference between the real-time and initial speckle images of the water wall to realize the stress monitoring.

Abstract: An image processing method and apparatus, an electronic device and a storage medium are disclosed. The method comprises: acquiring a current frame of image; detecting a moving object in the current frame of image to obtain a region of interest and a background region, wherein the region of interest includes the moving object; compressing image data of the region of interest to obtain first image data after compressed; and outputting the first image data after compressed and background picture data corresponding to the background region to a display device to display the current frame of image by the display device.

Abstract: The disclosure relates to a sample image capturing system, including: a sample holding apparatus configured to hold a sample slide on which a sample film is applied; an imaging apparatus configured to capture the sample on the sample slide; a sample appearance image obtaining apparatus configured to obtain a sample appearance image, where the sample appearance image includes at least an appearance image of the sample film; and a controller configured to: obtain the sample appearance image, identify an appearance characteristic of the sample film based on the sample appearance image, determine a capturing parameter based on the appearance characteristic, and control the imaging apparatus to capture, with the capturing parameter, sample components on the sample slide. The disclosure further relates to a sample image capturing method and a computer-readable storage medium. The disclosure can use a characteristic of the appearance image to achieve accurate capturing of sample images.

Abstract: The present disclosure discloses a probe module, comprising: a body, a floating plate located at the bottom of the body and a probe assembly located on the side of the body which is far away from the floating plate. The probe assembly includes a cover plate, a mould core comprising pin grooves and blade pins each limited and fixed in the pin groove by a limiting member. The floating plate comprises pin holes, and the floating plate is configured to be floatable relative to the body in an extension direction of the blade pin and electrical contact terminals of the blade pins may be inserted into the pin holes from the surface of the floating plate close to the body and protrude from the surface of the floating plate which is far away from the body.

Abstract: A racket ball game method includes displaying a virtual court and displaying a virtual ball in the virtual court; determining a human body posture according to a relative position of a first handle and the head-mounted device; searching a target movement velocity ratio matching with the human body posture from a mapping relationship according to the human body posture; acquiring a movement trajectory of a second handle in a coordinate system of a head-mounted device; determining a virtual movement trajectory of the second handle in the virtual court according to the movement trajectory of the second handle in the coordinate system of the head-mounted device and the target movement velocity ratio; and determining a movement trajectory of the virtual ball according to the virtual movement trajectory and the movement trajectory of the virtual ball, and displaying the virtual ball according to the movement trajectory of the virtual ball.

Abstract: A data acquisition method and apparatus for a head-mounted display device, a host and a head-mounted display device are provided. The method includes: acquiring user head posture information collected by a head posture sensor; determining a predicted head position at a next rendering moment based on the user head posture information and a current display scene of the head-mounted display device; and acquiring a current video rendering corresponding to the current rendering moment based on the predicted head position and video data at the current rendering moment, in order that the head-mounted display device displays a rendered video at the current rendering moment and a target time warped frame, where the current video rendering includes the rendered video and one or more time warped frames for the next rendering moment, and the target time warped frame is one of the one or more time warped frames.

Abstract: An image display method applied to AR glasses is disclosed. An inner frame of the AR glasses is provided with a first camera, and an outer frame of the AR glasses is provided with a second camera. The image display method comprises: detecting eye rotation information of a glasses wearer by using the first camera (S101); adjusting a shooting angle of the second camera according to the eye rotation information, and acquiring a target image collected by the second camera after adjusting the shooting angle (S102); judging whether there is a target object in the target image (S103); and if yes, displaying an image including position information of the target object via a lens of the AR glasses (S104). The object recognition accuracy of the AR glasses is improved.

Abstract: Disclosed are a method, apparatus and system for adjusting the volume of a head-mounted display device, and a computer-readable storage medium. The method includes: picking up a sound signal at an ear entrance position of a user; acquiring an environment sound signal from the sound signal according to the sound signal and a currently played audio signal; determining an output volume target value of a head-mounted display device according to the environment sound signal; and adjusting the volume of the head-mounted display device according to the output volume target value.

Abstract: A high strength cast magnesium alloy, relating to the technical field of magnesium alloy material preparation. The composition and mass percentage of cast magnesium alloy are: Zn 7.0%, Al 3.0%˜5.0%, Mn 0.3%˜0.5%, RE 0.5%˜1%, the total amount of unavoidable impurities is less than or equal to 0.04%, and the allowance is Mg, wherein the RE includes La and Ce, La and Ce account for 35% and 65% of the total amount of RE, respectively. Among them, Mn, La and Ce are added in the form of Mg-5 wt. % Mn, Mg-30 wt. % La and Mg-30 wt. % Ce intermediate alloys respectively. Then it is prepared through battering, melting, melt purification, pouring and heat treatment. By adding RE, the alloy melt can be purified, and the corrosion resistance and casting performance of the alloy can be increased. The tensile strength of the alloy is 300 MPa˜314 MPa, the elongation is 7%-13%, and the light rare earth content is low, the raw material and processing cost is low, and it is easy to realize mass production.

Abstract: An imaging method of a head-mounted display and a head-mounted display are disclosed. The method includes, but is not limited to: detecting a wavefront of a beam emitted by the head-mounted display through its optical system; acquiring a position of a visual axis of a human eye; calculating a deviation between the visual axis of the human eye and an optical axis of the optical system; and adjusting a wavefront incident to the human eye according to the deviation, so that a correspondence between the wavefront incident to the human eye and the visual axis is consistent with a correspondence between the wavefront of the beam emitted from the optical system and the optical axis.